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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 | static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, | |
27 | struct genl_info *info); | |
28 | static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, | |
29 | struct genl_info *info); | |
30 | ||
31 | /* the netlink family */ | |
32 | static struct genl_family nl80211_fam = { | |
33 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ | |
34 | .name = "nl80211", /* have users key off the name instead */ | |
35 | .hdrsize = 0, /* no private header */ | |
36 | .version = 1, /* no particular meaning now */ | |
37 | .maxattr = NL80211_ATTR_MAX, | |
38 | .netnsok = true, | |
39 | .pre_doit = nl80211_pre_doit, | |
40 | .post_doit = nl80211_post_doit, | |
41 | }; | |
42 | ||
43 | /* internal helper: get rdev and dev */ | |
44 | static int get_rdev_dev_by_info_ifindex(struct genl_info *info, | |
45 | struct cfg80211_registered_device **rdev, | |
46 | struct net_device **dev) | |
47 | { | |
48 | struct nlattr **attrs = info->attrs; | |
49 | int ifindex; | |
50 | ||
51 | if (!attrs[NL80211_ATTR_IFINDEX]) | |
52 | return -EINVAL; | |
53 | ||
54 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); | |
55 | *dev = dev_get_by_index(genl_info_net(info), ifindex); | |
56 | if (!*dev) | |
57 | return -ENODEV; | |
58 | ||
59 | *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex); | |
60 | if (IS_ERR(*rdev)) { | |
61 | dev_put(*dev); | |
62 | return PTR_ERR(*rdev); | |
63 | } | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | /* policy for the attributes */ | |
69 | static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { | |
70 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, | |
71 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, | |
72 | .len = 20-1 }, | |
73 | [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, | |
74 | [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, | |
75 | [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, | |
76 | [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, | |
77 | [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, | |
78 | [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, | |
79 | [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, | |
80 | [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, | |
81 | ||
82 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, | |
83 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, | |
84 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, | |
85 | ||
86 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
87 | [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
88 | ||
89 | [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, | |
90 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, | |
91 | .len = WLAN_MAX_KEY_LEN }, | |
92 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, | |
93 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, | |
94 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
95 | [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, | |
96 | [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, | |
97 | ||
98 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, | |
99 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, | |
100 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, | |
101 | .len = IEEE80211_MAX_DATA_LEN }, | |
102 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, | |
103 | .len = IEEE80211_MAX_DATA_LEN }, | |
104 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, | |
105 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, | |
106 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, | |
107 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, | |
108 | .len = NL80211_MAX_SUPP_RATES }, | |
109 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, | |
110 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, | |
111 | [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, | |
112 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, | |
113 | .len = IEEE80211_MAX_MESH_ID_LEN }, | |
114 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, | |
115 | ||
116 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, | |
117 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, | |
118 | ||
119 | [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, | |
120 | [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, | |
121 | [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, | |
122 | [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, | |
123 | .len = NL80211_MAX_SUPP_RATES }, | |
124 | [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, | |
125 | ||
126 | [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED }, | |
127 | ||
128 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, | |
129 | .len = NL80211_HT_CAPABILITY_LEN }, | |
130 | ||
131 | [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, | |
132 | [NL80211_ATTR_IE] = { .type = NLA_BINARY, | |
133 | .len = IEEE80211_MAX_DATA_LEN }, | |
134 | [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, | |
135 | [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, | |
136 | ||
137 | [NL80211_ATTR_SSID] = { .type = NLA_BINARY, | |
138 | .len = IEEE80211_MAX_SSID_LEN }, | |
139 | [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, | |
140 | [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, | |
141 | [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, | |
142 | [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, | |
143 | [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, | |
144 | [NL80211_ATTR_STA_FLAGS2] = { | |
145 | .len = sizeof(struct nl80211_sta_flag_update), | |
146 | }, | |
147 | [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, | |
148 | [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, | |
149 | [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, | |
150 | [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, | |
151 | [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, | |
152 | [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, | |
153 | [NL80211_ATTR_PID] = { .type = NLA_U32 }, | |
154 | [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, | |
155 | [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, | |
156 | .len = WLAN_PMKID_LEN }, | |
157 | [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, | |
158 | [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, | |
159 | [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, | |
160 | [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, | |
161 | .len = IEEE80211_MAX_DATA_LEN }, | |
162 | [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, | |
163 | [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, | |
164 | [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, | |
165 | [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, | |
166 | [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, | |
167 | [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, | |
168 | [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, | |
169 | [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, | |
170 | [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, | |
171 | [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, | |
172 | [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, | |
173 | [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, | |
174 | [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, | |
175 | }; | |
176 | ||
177 | /* policy for the key attributes */ | |
178 | static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { | |
179 | [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, | |
180 | [NL80211_KEY_IDX] = { .type = NLA_U8 }, | |
181 | [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, | |
182 | [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, | |
183 | [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
184 | [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, | |
185 | [NL80211_KEY_TYPE] = { .type = NLA_U32 }, | |
186 | [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, | |
187 | }; | |
188 | ||
189 | /* policy for the key default flags */ | |
190 | static const struct nla_policy | |
191 | nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { | |
192 | [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, | |
193 | [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, | |
194 | }; | |
195 | ||
196 | /* ifidx get helper */ | |
197 | static int nl80211_get_ifidx(struct netlink_callback *cb) | |
198 | { | |
199 | int res; | |
200 | ||
201 | res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
202 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
203 | nl80211_policy); | |
204 | if (res) | |
205 | return res; | |
206 | ||
207 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
208 | return -EINVAL; | |
209 | ||
210 | res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
211 | if (!res) | |
212 | return -EINVAL; | |
213 | return res; | |
214 | } | |
215 | ||
216 | static int nl80211_prepare_netdev_dump(struct sk_buff *skb, | |
217 | struct netlink_callback *cb, | |
218 | struct cfg80211_registered_device **rdev, | |
219 | struct net_device **dev) | |
220 | { | |
221 | int ifidx = cb->args[0]; | |
222 | int err; | |
223 | ||
224 | if (!ifidx) | |
225 | ifidx = nl80211_get_ifidx(cb); | |
226 | if (ifidx < 0) | |
227 | return ifidx; | |
228 | ||
229 | cb->args[0] = ifidx; | |
230 | ||
231 | rtnl_lock(); | |
232 | ||
233 | *dev = __dev_get_by_index(sock_net(skb->sk), ifidx); | |
234 | if (!*dev) { | |
235 | err = -ENODEV; | |
236 | goto out_rtnl; | |
237 | } | |
238 | ||
239 | *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); | |
240 | if (IS_ERR(*rdev)) { | |
241 | err = PTR_ERR(*rdev); | |
242 | goto out_rtnl; | |
243 | } | |
244 | ||
245 | return 0; | |
246 | out_rtnl: | |
247 | rtnl_unlock(); | |
248 | return err; | |
249 | } | |
250 | ||
251 | static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev) | |
252 | { | |
253 | cfg80211_unlock_rdev(rdev); | |
254 | rtnl_unlock(); | |
255 | } | |
256 | ||
257 | /* IE validation */ | |
258 | static bool is_valid_ie_attr(const struct nlattr *attr) | |
259 | { | |
260 | const u8 *pos; | |
261 | int len; | |
262 | ||
263 | if (!attr) | |
264 | return true; | |
265 | ||
266 | pos = nla_data(attr); | |
267 | len = nla_len(attr); | |
268 | ||
269 | while (len) { | |
270 | u8 elemlen; | |
271 | ||
272 | if (len < 2) | |
273 | return false; | |
274 | len -= 2; | |
275 | ||
276 | elemlen = pos[1]; | |
277 | if (elemlen > len) | |
278 | return false; | |
279 | ||
280 | len -= elemlen; | |
281 | pos += 2 + elemlen; | |
282 | } | |
283 | ||
284 | return true; | |
285 | } | |
286 | ||
287 | /* message building helper */ | |
288 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, | |
289 | int flags, u8 cmd) | |
290 | { | |
291 | /* since there is no private header just add the generic one */ | |
292 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); | |
293 | } | |
294 | ||
295 | static int nl80211_msg_put_channel(struct sk_buff *msg, | |
296 | struct ieee80211_channel *chan) | |
297 | { | |
298 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, | |
299 | chan->center_freq); | |
300 | ||
301 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
302 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); | |
303 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
304 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); | |
305 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
306 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); | |
307 | if (chan->flags & IEEE80211_CHAN_RADAR) | |
308 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); | |
309 | ||
310 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, | |
311 | DBM_TO_MBM(chan->max_power)); | |
312 | ||
313 | return 0; | |
314 | ||
315 | nla_put_failure: | |
316 | return -ENOBUFS; | |
317 | } | |
318 | ||
319 | /* netlink command implementations */ | |
320 | ||
321 | struct key_parse { | |
322 | struct key_params p; | |
323 | int idx; | |
324 | int type; | |
325 | bool def, defmgmt; | |
326 | bool def_uni, def_multi; | |
327 | }; | |
328 | ||
329 | static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) | |
330 | { | |
331 | struct nlattr *tb[NL80211_KEY_MAX + 1]; | |
332 | int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, | |
333 | nl80211_key_policy); | |
334 | if (err) | |
335 | return err; | |
336 | ||
337 | k->def = !!tb[NL80211_KEY_DEFAULT]; | |
338 | k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; | |
339 | ||
340 | if (k->def) { | |
341 | k->def_uni = true; | |
342 | k->def_multi = true; | |
343 | } | |
344 | if (k->defmgmt) | |
345 | k->def_multi = true; | |
346 | ||
347 | if (tb[NL80211_KEY_IDX]) | |
348 | k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); | |
349 | ||
350 | if (tb[NL80211_KEY_DATA]) { | |
351 | k->p.key = nla_data(tb[NL80211_KEY_DATA]); | |
352 | k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); | |
353 | } | |
354 | ||
355 | if (tb[NL80211_KEY_SEQ]) { | |
356 | k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); | |
357 | k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); | |
358 | } | |
359 | ||
360 | if (tb[NL80211_KEY_CIPHER]) | |
361 | k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); | |
362 | ||
363 | if (tb[NL80211_KEY_TYPE]) { | |
364 | k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); | |
365 | if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | if (tb[NL80211_KEY_DEFAULT_TYPES]) { | |
370 | struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; | |
371 | int err = nla_parse_nested(kdt, | |
372 | NUM_NL80211_KEY_DEFAULT_TYPES - 1, | |
373 | tb[NL80211_KEY_DEFAULT_TYPES], | |
374 | nl80211_key_default_policy); | |
375 | if (err) | |
376 | return err; | |
377 | ||
378 | k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; | |
379 | k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) | |
386 | { | |
387 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
388 | k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
389 | k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
390 | } | |
391 | ||
392 | if (info->attrs[NL80211_ATTR_KEY_SEQ]) { | |
393 | k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); | |
394 | k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); | |
395 | } | |
396 | ||
397 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
398 | k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
399 | ||
400 | if (info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
401 | k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
402 | ||
403 | k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; | |
404 | k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; | |
405 | ||
406 | if (k->def) { | |
407 | k->def_uni = true; | |
408 | k->def_multi = true; | |
409 | } | |
410 | if (k->defmgmt) | |
411 | k->def_multi = true; | |
412 | ||
413 | if (info->attrs[NL80211_ATTR_KEY_TYPE]) { | |
414 | k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); | |
415 | if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) | |
416 | return -EINVAL; | |
417 | } | |
418 | ||
419 | if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { | |
420 | struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; | |
421 | int err = nla_parse_nested( | |
422 | kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, | |
423 | info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], | |
424 | nl80211_key_default_policy); | |
425 | if (err) | |
426 | return err; | |
427 | ||
428 | k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; | |
429 | k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; | |
430 | } | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) | |
436 | { | |
437 | int err; | |
438 | ||
439 | memset(k, 0, sizeof(*k)); | |
440 | k->idx = -1; | |
441 | k->type = -1; | |
442 | ||
443 | if (info->attrs[NL80211_ATTR_KEY]) | |
444 | err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); | |
445 | else | |
446 | err = nl80211_parse_key_old(info, k); | |
447 | ||
448 | if (err) | |
449 | return err; | |
450 | ||
451 | if (k->def && k->defmgmt) | |
452 | return -EINVAL; | |
453 | ||
454 | if (k->defmgmt) { | |
455 | if (k->def_uni || !k->def_multi) | |
456 | return -EINVAL; | |
457 | } | |
458 | ||
459 | if (k->idx != -1) { | |
460 | if (k->defmgmt) { | |
461 | if (k->idx < 4 || k->idx > 5) | |
462 | return -EINVAL; | |
463 | } else if (k->def) { | |
464 | if (k->idx < 0 || k->idx > 3) | |
465 | return -EINVAL; | |
466 | } else { | |
467 | if (k->idx < 0 || k->idx > 5) | |
468 | return -EINVAL; | |
469 | } | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | static struct cfg80211_cached_keys * | |
476 | nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, | |
477 | struct nlattr *keys) | |
478 | { | |
479 | struct key_parse parse; | |
480 | struct nlattr *key; | |
481 | struct cfg80211_cached_keys *result; | |
482 | int rem, err, def = 0; | |
483 | ||
484 | result = kzalloc(sizeof(*result), GFP_KERNEL); | |
485 | if (!result) | |
486 | return ERR_PTR(-ENOMEM); | |
487 | ||
488 | result->def = -1; | |
489 | result->defmgmt = -1; | |
490 | ||
491 | nla_for_each_nested(key, keys, rem) { | |
492 | memset(&parse, 0, sizeof(parse)); | |
493 | parse.idx = -1; | |
494 | ||
495 | err = nl80211_parse_key_new(key, &parse); | |
496 | if (err) | |
497 | goto error; | |
498 | err = -EINVAL; | |
499 | if (!parse.p.key) | |
500 | goto error; | |
501 | if (parse.idx < 0 || parse.idx > 4) | |
502 | goto error; | |
503 | if (parse.def) { | |
504 | if (def) | |
505 | goto error; | |
506 | def = 1; | |
507 | result->def = parse.idx; | |
508 | if (!parse.def_uni || !parse.def_multi) | |
509 | goto error; | |
510 | } else if (parse.defmgmt) | |
511 | goto error; | |
512 | err = cfg80211_validate_key_settings(rdev, &parse.p, | |
513 | parse.idx, false, NULL); | |
514 | if (err) | |
515 | goto error; | |
516 | result->params[parse.idx].cipher = parse.p.cipher; | |
517 | result->params[parse.idx].key_len = parse.p.key_len; | |
518 | result->params[parse.idx].key = result->data[parse.idx]; | |
519 | memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); | |
520 | } | |
521 | ||
522 | return result; | |
523 | error: | |
524 | kfree(result); | |
525 | return ERR_PTR(err); | |
526 | } | |
527 | ||
528 | static int nl80211_key_allowed(struct wireless_dev *wdev) | |
529 | { | |
530 | ASSERT_WDEV_LOCK(wdev); | |
531 | ||
532 | switch (wdev->iftype) { | |
533 | case NL80211_IFTYPE_AP: | |
534 | case NL80211_IFTYPE_AP_VLAN: | |
535 | case NL80211_IFTYPE_P2P_GO: | |
536 | break; | |
537 | case NL80211_IFTYPE_ADHOC: | |
538 | if (!wdev->current_bss) | |
539 | return -ENOLINK; | |
540 | break; | |
541 | case NL80211_IFTYPE_STATION: | |
542 | case NL80211_IFTYPE_P2P_CLIENT: | |
543 | if (wdev->sme_state != CFG80211_SME_CONNECTED) | |
544 | return -ENOLINK; | |
545 | break; | |
546 | default: | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
554 | struct cfg80211_registered_device *dev) | |
555 | { | |
556 | void *hdr; | |
557 | struct nlattr *nl_bands, *nl_band; | |
558 | struct nlattr *nl_freqs, *nl_freq; | |
559 | struct nlattr *nl_rates, *nl_rate; | |
560 | struct nlattr *nl_modes; | |
561 | struct nlattr *nl_cmds; | |
562 | enum ieee80211_band band; | |
563 | struct ieee80211_channel *chan; | |
564 | struct ieee80211_rate *rate; | |
565 | int i; | |
566 | u16 ifmodes = dev->wiphy.interface_modes; | |
567 | const struct ieee80211_txrx_stypes *mgmt_stypes = | |
568 | dev->wiphy.mgmt_stypes; | |
569 | ||
570 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); | |
571 | if (!hdr) | |
572 | return -1; | |
573 | ||
574 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); | |
575 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); | |
576 | ||
577 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, | |
578 | cfg80211_rdev_list_generation); | |
579 | ||
580 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, | |
581 | dev->wiphy.retry_short); | |
582 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, | |
583 | dev->wiphy.retry_long); | |
584 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, | |
585 | dev->wiphy.frag_threshold); | |
586 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, | |
587 | dev->wiphy.rts_threshold); | |
588 | NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, | |
589 | dev->wiphy.coverage_class); | |
590 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, | |
591 | dev->wiphy.max_scan_ssids); | |
592 | NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, | |
593 | dev->wiphy.max_scan_ie_len); | |
594 | ||
595 | if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) | |
596 | NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN); | |
597 | ||
598 | NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, | |
599 | sizeof(u32) * dev->wiphy.n_cipher_suites, | |
600 | dev->wiphy.cipher_suites); | |
601 | ||
602 | NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, | |
603 | dev->wiphy.max_num_pmkids); | |
604 | ||
605 | if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) | |
606 | NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE); | |
607 | ||
608 | if (dev->wiphy.available_antennas && dev->ops->get_antenna) { | |
609 | u32 tx_ant = 0, rx_ant = 0; | |
610 | int res; | |
611 | res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant); | |
612 | if (!res) { | |
613 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant); | |
614 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant); | |
615 | } | |
616 | } | |
617 | ||
618 | nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); | |
619 | if (!nl_modes) | |
620 | goto nla_put_failure; | |
621 | ||
622 | i = 0; | |
623 | while (ifmodes) { | |
624 | if (ifmodes & 1) | |
625 | NLA_PUT_FLAG(msg, i); | |
626 | ifmodes >>= 1; | |
627 | i++; | |
628 | } | |
629 | ||
630 | nla_nest_end(msg, nl_modes); | |
631 | ||
632 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); | |
633 | if (!nl_bands) | |
634 | goto nla_put_failure; | |
635 | ||
636 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
637 | if (!dev->wiphy.bands[band]) | |
638 | continue; | |
639 | ||
640 | nl_band = nla_nest_start(msg, band); | |
641 | if (!nl_band) | |
642 | goto nla_put_failure; | |
643 | ||
644 | /* add HT info */ | |
645 | if (dev->wiphy.bands[band]->ht_cap.ht_supported) { | |
646 | NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, | |
647 | sizeof(dev->wiphy.bands[band]->ht_cap.mcs), | |
648 | &dev->wiphy.bands[band]->ht_cap.mcs); | |
649 | NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, | |
650 | dev->wiphy.bands[band]->ht_cap.cap); | |
651 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, | |
652 | dev->wiphy.bands[band]->ht_cap.ampdu_factor); | |
653 | NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, | |
654 | dev->wiphy.bands[band]->ht_cap.ampdu_density); | |
655 | } | |
656 | ||
657 | /* add frequencies */ | |
658 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); | |
659 | if (!nl_freqs) | |
660 | goto nla_put_failure; | |
661 | ||
662 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { | |
663 | nl_freq = nla_nest_start(msg, i); | |
664 | if (!nl_freq) | |
665 | goto nla_put_failure; | |
666 | ||
667 | chan = &dev->wiphy.bands[band]->channels[i]; | |
668 | ||
669 | if (nl80211_msg_put_channel(msg, chan)) | |
670 | goto nla_put_failure; | |
671 | ||
672 | nla_nest_end(msg, nl_freq); | |
673 | } | |
674 | ||
675 | nla_nest_end(msg, nl_freqs); | |
676 | ||
677 | /* add bitrates */ | |
678 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); | |
679 | if (!nl_rates) | |
680 | goto nla_put_failure; | |
681 | ||
682 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { | |
683 | nl_rate = nla_nest_start(msg, i); | |
684 | if (!nl_rate) | |
685 | goto nla_put_failure; | |
686 | ||
687 | rate = &dev->wiphy.bands[band]->bitrates[i]; | |
688 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, | |
689 | rate->bitrate); | |
690 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) | |
691 | NLA_PUT_FLAG(msg, | |
692 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); | |
693 | ||
694 | nla_nest_end(msg, nl_rate); | |
695 | } | |
696 | ||
697 | nla_nest_end(msg, nl_rates); | |
698 | ||
699 | nla_nest_end(msg, nl_band); | |
700 | } | |
701 | nla_nest_end(msg, nl_bands); | |
702 | ||
703 | nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); | |
704 | if (!nl_cmds) | |
705 | goto nla_put_failure; | |
706 | ||
707 | i = 0; | |
708 | #define CMD(op, n) \ | |
709 | do { \ | |
710 | if (dev->ops->op) { \ | |
711 | i++; \ | |
712 | NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \ | |
713 | } \ | |
714 | } while (0) | |
715 | ||
716 | CMD(add_virtual_intf, NEW_INTERFACE); | |
717 | CMD(change_virtual_intf, SET_INTERFACE); | |
718 | CMD(add_key, NEW_KEY); | |
719 | CMD(add_beacon, NEW_BEACON); | |
720 | CMD(add_station, NEW_STATION); | |
721 | CMD(add_mpath, NEW_MPATH); | |
722 | CMD(update_mesh_params, SET_MESH_PARAMS); | |
723 | CMD(change_bss, SET_BSS); | |
724 | CMD(auth, AUTHENTICATE); | |
725 | CMD(assoc, ASSOCIATE); | |
726 | CMD(deauth, DEAUTHENTICATE); | |
727 | CMD(disassoc, DISASSOCIATE); | |
728 | CMD(join_ibss, JOIN_IBSS); | |
729 | CMD(join_mesh, JOIN_MESH); | |
730 | CMD(set_pmksa, SET_PMKSA); | |
731 | CMD(del_pmksa, DEL_PMKSA); | |
732 | CMD(flush_pmksa, FLUSH_PMKSA); | |
733 | CMD(remain_on_channel, REMAIN_ON_CHANNEL); | |
734 | CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); | |
735 | CMD(mgmt_tx, FRAME); | |
736 | CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); | |
737 | if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { | |
738 | i++; | |
739 | NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); | |
740 | } | |
741 | CMD(set_channel, SET_CHANNEL); | |
742 | CMD(set_wds_peer, SET_WDS_PEER); | |
743 | ||
744 | #undef CMD | |
745 | ||
746 | if (dev->ops->connect || dev->ops->auth) { | |
747 | i++; | |
748 | NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT); | |
749 | } | |
750 | ||
751 | if (dev->ops->disconnect || dev->ops->deauth) { | |
752 | i++; | |
753 | NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT); | |
754 | } | |
755 | ||
756 | nla_nest_end(msg, nl_cmds); | |
757 | ||
758 | /* for now at least assume all drivers have it */ | |
759 | if (dev->ops->mgmt_tx) | |
760 | NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); | |
761 | ||
762 | if (mgmt_stypes) { | |
763 | u16 stypes; | |
764 | struct nlattr *nl_ftypes, *nl_ifs; | |
765 | enum nl80211_iftype ift; | |
766 | ||
767 | nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); | |
768 | if (!nl_ifs) | |
769 | goto nla_put_failure; | |
770 | ||
771 | for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { | |
772 | nl_ftypes = nla_nest_start(msg, ift); | |
773 | if (!nl_ftypes) | |
774 | goto nla_put_failure; | |
775 | i = 0; | |
776 | stypes = mgmt_stypes[ift].tx; | |
777 | while (stypes) { | |
778 | if (stypes & 1) | |
779 | NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, | |
780 | (i << 4) | IEEE80211_FTYPE_MGMT); | |
781 | stypes >>= 1; | |
782 | i++; | |
783 | } | |
784 | nla_nest_end(msg, nl_ftypes); | |
785 | } | |
786 | ||
787 | nla_nest_end(msg, nl_ifs); | |
788 | ||
789 | nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); | |
790 | if (!nl_ifs) | |
791 | goto nla_put_failure; | |
792 | ||
793 | for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { | |
794 | nl_ftypes = nla_nest_start(msg, ift); | |
795 | if (!nl_ftypes) | |
796 | goto nla_put_failure; | |
797 | i = 0; | |
798 | stypes = mgmt_stypes[ift].rx; | |
799 | while (stypes) { | |
800 | if (stypes & 1) | |
801 | NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, | |
802 | (i << 4) | IEEE80211_FTYPE_MGMT); | |
803 | stypes >>= 1; | |
804 | i++; | |
805 | } | |
806 | nla_nest_end(msg, nl_ftypes); | |
807 | } | |
808 | nla_nest_end(msg, nl_ifs); | |
809 | } | |
810 | ||
811 | return genlmsg_end(msg, hdr); | |
812 | ||
813 | nla_put_failure: | |
814 | genlmsg_cancel(msg, hdr); | |
815 | return -EMSGSIZE; | |
816 | } | |
817 | ||
818 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) | |
819 | { | |
820 | int idx = 0; | |
821 | int start = cb->args[0]; | |
822 | struct cfg80211_registered_device *dev; | |
823 | ||
824 | mutex_lock(&cfg80211_mutex); | |
825 | list_for_each_entry(dev, &cfg80211_rdev_list, list) { | |
826 | if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) | |
827 | continue; | |
828 | if (++idx <= start) | |
829 | continue; | |
830 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
831 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
832 | dev) < 0) { | |
833 | idx--; | |
834 | break; | |
835 | } | |
836 | } | |
837 | mutex_unlock(&cfg80211_mutex); | |
838 | ||
839 | cb->args[0] = idx; | |
840 | ||
841 | return skb->len; | |
842 | } | |
843 | ||
844 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) | |
845 | { | |
846 | struct sk_buff *msg; | |
847 | struct cfg80211_registered_device *dev = info->user_ptr[0]; | |
848 | ||
849 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
850 | if (!msg) | |
851 | return -ENOMEM; | |
852 | ||
853 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) { | |
854 | nlmsg_free(msg); | |
855 | return -ENOBUFS; | |
856 | } | |
857 | ||
858 | return genlmsg_reply(msg, info); | |
859 | } | |
860 | ||
861 | static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { | |
862 | [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, | |
863 | [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, | |
864 | [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, | |
865 | [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, | |
866 | [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, | |
867 | }; | |
868 | ||
869 | static int parse_txq_params(struct nlattr *tb[], | |
870 | struct ieee80211_txq_params *txq_params) | |
871 | { | |
872 | if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || | |
873 | !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || | |
874 | !tb[NL80211_TXQ_ATTR_AIFS]) | |
875 | return -EINVAL; | |
876 | ||
877 | txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); | |
878 | txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); | |
879 | txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); | |
880 | txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); | |
881 | txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) | |
887 | { | |
888 | /* | |
889 | * You can only set the channel explicitly for AP, mesh | |
890 | * and WDS type interfaces; all others have their channel | |
891 | * managed via their respective "establish a connection" | |
892 | * command (connect, join, ...) | |
893 | * | |
894 | * Monitors are special as they are normally slaved to | |
895 | * whatever else is going on, so they behave as though | |
896 | * you tried setting the wiphy channel itself. | |
897 | */ | |
898 | return !wdev || | |
899 | wdev->iftype == NL80211_IFTYPE_AP || | |
900 | wdev->iftype == NL80211_IFTYPE_WDS || | |
901 | wdev->iftype == NL80211_IFTYPE_MESH_POINT || | |
902 | wdev->iftype == NL80211_IFTYPE_MONITOR || | |
903 | wdev->iftype == NL80211_IFTYPE_P2P_GO; | |
904 | } | |
905 | ||
906 | static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, | |
907 | struct wireless_dev *wdev, | |
908 | struct genl_info *info) | |
909 | { | |
910 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
911 | u32 freq; | |
912 | int result; | |
913 | ||
914 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) | |
915 | return -EINVAL; | |
916 | ||
917 | if (!nl80211_can_set_dev_channel(wdev)) | |
918 | return -EOPNOTSUPP; | |
919 | ||
920 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { | |
921 | channel_type = nla_get_u32(info->attrs[ | |
922 | NL80211_ATTR_WIPHY_CHANNEL_TYPE]); | |
923 | if (channel_type != NL80211_CHAN_NO_HT && | |
924 | channel_type != NL80211_CHAN_HT20 && | |
925 | channel_type != NL80211_CHAN_HT40PLUS && | |
926 | channel_type != NL80211_CHAN_HT40MINUS) | |
927 | return -EINVAL; | |
928 | } | |
929 | ||
930 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); | |
931 | ||
932 | mutex_lock(&rdev->devlist_mtx); | |
933 | if (wdev) { | |
934 | wdev_lock(wdev); | |
935 | result = cfg80211_set_freq(rdev, wdev, freq, channel_type); | |
936 | wdev_unlock(wdev); | |
937 | } else { | |
938 | result = cfg80211_set_freq(rdev, NULL, freq, channel_type); | |
939 | } | |
940 | mutex_unlock(&rdev->devlist_mtx); | |
941 | ||
942 | return result; | |
943 | } | |
944 | ||
945 | static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) | |
946 | { | |
947 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
948 | struct net_device *netdev = info->user_ptr[1]; | |
949 | ||
950 | return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); | |
951 | } | |
952 | ||
953 | static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) | |
954 | { | |
955 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
956 | struct net_device *dev = info->user_ptr[1]; | |
957 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
958 | const u8 *bssid; | |
959 | ||
960 | if (!info->attrs[NL80211_ATTR_MAC]) | |
961 | return -EINVAL; | |
962 | ||
963 | if (netif_running(dev)) | |
964 | return -EBUSY; | |
965 | ||
966 | if (!rdev->ops->set_wds_peer) | |
967 | return -EOPNOTSUPP; | |
968 | ||
969 | if (wdev->iftype != NL80211_IFTYPE_WDS) | |
970 | return -EOPNOTSUPP; | |
971 | ||
972 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
973 | return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); | |
974 | } | |
975 | ||
976 | ||
977 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) | |
978 | { | |
979 | struct cfg80211_registered_device *rdev; | |
980 | struct net_device *netdev = NULL; | |
981 | struct wireless_dev *wdev; | |
982 | int result = 0, rem_txq_params = 0; | |
983 | struct nlattr *nl_txq_params; | |
984 | u32 changed; | |
985 | u8 retry_short = 0, retry_long = 0; | |
986 | u32 frag_threshold = 0, rts_threshold = 0; | |
987 | u8 coverage_class = 0; | |
988 | ||
989 | /* | |
990 | * Try to find the wiphy and netdev. Normally this | |
991 | * function shouldn't need the netdev, but this is | |
992 | * done for backward compatibility -- previously | |
993 | * setting the channel was done per wiphy, but now | |
994 | * it is per netdev. Previous userland like hostapd | |
995 | * also passed a netdev to set_wiphy, so that it is | |
996 | * possible to let that go to the right netdev! | |
997 | */ | |
998 | mutex_lock(&cfg80211_mutex); | |
999 | ||
1000 | if (info->attrs[NL80211_ATTR_IFINDEX]) { | |
1001 | int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); | |
1002 | ||
1003 | netdev = dev_get_by_index(genl_info_net(info), ifindex); | |
1004 | if (netdev && netdev->ieee80211_ptr) { | |
1005 | rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); | |
1006 | mutex_lock(&rdev->mtx); | |
1007 | } else | |
1008 | netdev = NULL; | |
1009 | } | |
1010 | ||
1011 | if (!netdev) { | |
1012 | rdev = __cfg80211_rdev_from_info(info); | |
1013 | if (IS_ERR(rdev)) { | |
1014 | mutex_unlock(&cfg80211_mutex); | |
1015 | return PTR_ERR(rdev); | |
1016 | } | |
1017 | wdev = NULL; | |
1018 | netdev = NULL; | |
1019 | result = 0; | |
1020 | ||
1021 | mutex_lock(&rdev->mtx); | |
1022 | } else if (netif_running(netdev) && | |
1023 | nl80211_can_set_dev_channel(netdev->ieee80211_ptr)) | |
1024 | wdev = netdev->ieee80211_ptr; | |
1025 | else | |
1026 | wdev = NULL; | |
1027 | ||
1028 | /* | |
1029 | * end workaround code, by now the rdev is available | |
1030 | * and locked, and wdev may or may not be NULL. | |
1031 | */ | |
1032 | ||
1033 | if (info->attrs[NL80211_ATTR_WIPHY_NAME]) | |
1034 | result = cfg80211_dev_rename( | |
1035 | rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); | |
1036 | ||
1037 | mutex_unlock(&cfg80211_mutex); | |
1038 | ||
1039 | if (result) | |
1040 | goto bad_res; | |
1041 | ||
1042 | if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { | |
1043 | struct ieee80211_txq_params txq_params; | |
1044 | struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; | |
1045 | ||
1046 | if (!rdev->ops->set_txq_params) { | |
1047 | result = -EOPNOTSUPP; | |
1048 | goto bad_res; | |
1049 | } | |
1050 | ||
1051 | nla_for_each_nested(nl_txq_params, | |
1052 | info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], | |
1053 | rem_txq_params) { | |
1054 | nla_parse(tb, NL80211_TXQ_ATTR_MAX, | |
1055 | nla_data(nl_txq_params), | |
1056 | nla_len(nl_txq_params), | |
1057 | txq_params_policy); | |
1058 | result = parse_txq_params(tb, &txq_params); | |
1059 | if (result) | |
1060 | goto bad_res; | |
1061 | ||
1062 | result = rdev->ops->set_txq_params(&rdev->wiphy, | |
1063 | &txq_params); | |
1064 | if (result) | |
1065 | goto bad_res; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { | |
1070 | result = __nl80211_set_channel(rdev, wdev, info); | |
1071 | if (result) | |
1072 | goto bad_res; | |
1073 | } | |
1074 | ||
1075 | if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { | |
1076 | enum nl80211_tx_power_setting type; | |
1077 | int idx, mbm = 0; | |
1078 | ||
1079 | if (!rdev->ops->set_tx_power) { | |
1080 | result = -EOPNOTSUPP; | |
1081 | goto bad_res; | |
1082 | } | |
1083 | ||
1084 | idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; | |
1085 | type = nla_get_u32(info->attrs[idx]); | |
1086 | ||
1087 | if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && | |
1088 | (type != NL80211_TX_POWER_AUTOMATIC)) { | |
1089 | result = -EINVAL; | |
1090 | goto bad_res; | |
1091 | } | |
1092 | ||
1093 | if (type != NL80211_TX_POWER_AUTOMATIC) { | |
1094 | idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; | |
1095 | mbm = nla_get_u32(info->attrs[idx]); | |
1096 | } | |
1097 | ||
1098 | result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm); | |
1099 | if (result) | |
1100 | goto bad_res; | |
1101 | } | |
1102 | ||
1103 | if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && | |
1104 | info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { | |
1105 | u32 tx_ant, rx_ant; | |
1106 | if (!rdev->wiphy.available_antennas || !rdev->ops->set_antenna) { | |
1107 | result = -EOPNOTSUPP; | |
1108 | goto bad_res; | |
1109 | } | |
1110 | ||
1111 | tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); | |
1112 | rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); | |
1113 | ||
1114 | /* reject antenna configurations which don't match the | |
1115 | * available antenna mask, except for the "all" mask */ | |
1116 | if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas)) || | |
1117 | (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas))) { | |
1118 | result = -EINVAL; | |
1119 | goto bad_res; | |
1120 | } | |
1121 | ||
1122 | tx_ant = tx_ant & rdev->wiphy.available_antennas; | |
1123 | rx_ant = rx_ant & rdev->wiphy.available_antennas; | |
1124 | ||
1125 | result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant); | |
1126 | if (result) | |
1127 | goto bad_res; | |
1128 | } | |
1129 | ||
1130 | changed = 0; | |
1131 | ||
1132 | if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { | |
1133 | retry_short = nla_get_u8( | |
1134 | info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); | |
1135 | if (retry_short == 0) { | |
1136 | result = -EINVAL; | |
1137 | goto bad_res; | |
1138 | } | |
1139 | changed |= WIPHY_PARAM_RETRY_SHORT; | |
1140 | } | |
1141 | ||
1142 | if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { | |
1143 | retry_long = nla_get_u8( | |
1144 | info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); | |
1145 | if (retry_long == 0) { | |
1146 | result = -EINVAL; | |
1147 | goto bad_res; | |
1148 | } | |
1149 | changed |= WIPHY_PARAM_RETRY_LONG; | |
1150 | } | |
1151 | ||
1152 | if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { | |
1153 | frag_threshold = nla_get_u32( | |
1154 | info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); | |
1155 | if (frag_threshold < 256) { | |
1156 | result = -EINVAL; | |
1157 | goto bad_res; | |
1158 | } | |
1159 | if (frag_threshold != (u32) -1) { | |
1160 | /* | |
1161 | * Fragments (apart from the last one) are required to | |
1162 | * have even length. Make the fragmentation code | |
1163 | * simpler by stripping LSB should someone try to use | |
1164 | * odd threshold value. | |
1165 | */ | |
1166 | frag_threshold &= ~0x1; | |
1167 | } | |
1168 | changed |= WIPHY_PARAM_FRAG_THRESHOLD; | |
1169 | } | |
1170 | ||
1171 | if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { | |
1172 | rts_threshold = nla_get_u32( | |
1173 | info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); | |
1174 | changed |= WIPHY_PARAM_RTS_THRESHOLD; | |
1175 | } | |
1176 | ||
1177 | if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { | |
1178 | coverage_class = nla_get_u8( | |
1179 | info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); | |
1180 | changed |= WIPHY_PARAM_COVERAGE_CLASS; | |
1181 | } | |
1182 | ||
1183 | if (changed) { | |
1184 | u8 old_retry_short, old_retry_long; | |
1185 | u32 old_frag_threshold, old_rts_threshold; | |
1186 | u8 old_coverage_class; | |
1187 | ||
1188 | if (!rdev->ops->set_wiphy_params) { | |
1189 | result = -EOPNOTSUPP; | |
1190 | goto bad_res; | |
1191 | } | |
1192 | ||
1193 | old_retry_short = rdev->wiphy.retry_short; | |
1194 | old_retry_long = rdev->wiphy.retry_long; | |
1195 | old_frag_threshold = rdev->wiphy.frag_threshold; | |
1196 | old_rts_threshold = rdev->wiphy.rts_threshold; | |
1197 | old_coverage_class = rdev->wiphy.coverage_class; | |
1198 | ||
1199 | if (changed & WIPHY_PARAM_RETRY_SHORT) | |
1200 | rdev->wiphy.retry_short = retry_short; | |
1201 | if (changed & WIPHY_PARAM_RETRY_LONG) | |
1202 | rdev->wiphy.retry_long = retry_long; | |
1203 | if (changed & WIPHY_PARAM_FRAG_THRESHOLD) | |
1204 | rdev->wiphy.frag_threshold = frag_threshold; | |
1205 | if (changed & WIPHY_PARAM_RTS_THRESHOLD) | |
1206 | rdev->wiphy.rts_threshold = rts_threshold; | |
1207 | if (changed & WIPHY_PARAM_COVERAGE_CLASS) | |
1208 | rdev->wiphy.coverage_class = coverage_class; | |
1209 | ||
1210 | result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); | |
1211 | if (result) { | |
1212 | rdev->wiphy.retry_short = old_retry_short; | |
1213 | rdev->wiphy.retry_long = old_retry_long; | |
1214 | rdev->wiphy.frag_threshold = old_frag_threshold; | |
1215 | rdev->wiphy.rts_threshold = old_rts_threshold; | |
1216 | rdev->wiphy.coverage_class = old_coverage_class; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | bad_res: | |
1221 | mutex_unlock(&rdev->mtx); | |
1222 | if (netdev) | |
1223 | dev_put(netdev); | |
1224 | return result; | |
1225 | } | |
1226 | ||
1227 | ||
1228 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
1229 | struct cfg80211_registered_device *rdev, | |
1230 | struct net_device *dev) | |
1231 | { | |
1232 | void *hdr; | |
1233 | ||
1234 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); | |
1235 | if (!hdr) | |
1236 | return -1; | |
1237 | ||
1238 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1239 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
1240 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); | |
1241 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); | |
1242 | ||
1243 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, | |
1244 | rdev->devlist_generation ^ | |
1245 | (cfg80211_rdev_list_generation << 2)); | |
1246 | ||
1247 | return genlmsg_end(msg, hdr); | |
1248 | ||
1249 | nla_put_failure: | |
1250 | genlmsg_cancel(msg, hdr); | |
1251 | return -EMSGSIZE; | |
1252 | } | |
1253 | ||
1254 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) | |
1255 | { | |
1256 | int wp_idx = 0; | |
1257 | int if_idx = 0; | |
1258 | int wp_start = cb->args[0]; | |
1259 | int if_start = cb->args[1]; | |
1260 | struct cfg80211_registered_device *rdev; | |
1261 | struct wireless_dev *wdev; | |
1262 | ||
1263 | mutex_lock(&cfg80211_mutex); | |
1264 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
1265 | if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) | |
1266 | continue; | |
1267 | if (wp_idx < wp_start) { | |
1268 | wp_idx++; | |
1269 | continue; | |
1270 | } | |
1271 | if_idx = 0; | |
1272 | ||
1273 | mutex_lock(&rdev->devlist_mtx); | |
1274 | list_for_each_entry(wdev, &rdev->netdev_list, list) { | |
1275 | if (if_idx < if_start) { | |
1276 | if_idx++; | |
1277 | continue; | |
1278 | } | |
1279 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, | |
1280 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1281 | rdev, wdev->netdev) < 0) { | |
1282 | mutex_unlock(&rdev->devlist_mtx); | |
1283 | goto out; | |
1284 | } | |
1285 | if_idx++; | |
1286 | } | |
1287 | mutex_unlock(&rdev->devlist_mtx); | |
1288 | ||
1289 | wp_idx++; | |
1290 | } | |
1291 | out: | |
1292 | mutex_unlock(&cfg80211_mutex); | |
1293 | ||
1294 | cb->args[0] = wp_idx; | |
1295 | cb->args[1] = if_idx; | |
1296 | ||
1297 | return skb->len; | |
1298 | } | |
1299 | ||
1300 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) | |
1301 | { | |
1302 | struct sk_buff *msg; | |
1303 | struct cfg80211_registered_device *dev = info->user_ptr[0]; | |
1304 | struct net_device *netdev = info->user_ptr[1]; | |
1305 | ||
1306 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1307 | if (!msg) | |
1308 | return -ENOMEM; | |
1309 | ||
1310 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, | |
1311 | dev, netdev) < 0) { | |
1312 | nlmsg_free(msg); | |
1313 | return -ENOBUFS; | |
1314 | } | |
1315 | ||
1316 | return genlmsg_reply(msg, info); | |
1317 | } | |
1318 | ||
1319 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { | |
1320 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, | |
1321 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, | |
1322 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, | |
1323 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, | |
1324 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, | |
1325 | }; | |
1326 | ||
1327 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) | |
1328 | { | |
1329 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; | |
1330 | int flag; | |
1331 | ||
1332 | *mntrflags = 0; | |
1333 | ||
1334 | if (!nla) | |
1335 | return -EINVAL; | |
1336 | ||
1337 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, | |
1338 | nla, mntr_flags_policy)) | |
1339 | return -EINVAL; | |
1340 | ||
1341 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) | |
1342 | if (flags[flag]) | |
1343 | *mntrflags |= (1<<flag); | |
1344 | ||
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, | |
1349 | struct net_device *netdev, u8 use_4addr, | |
1350 | enum nl80211_iftype iftype) | |
1351 | { | |
1352 | if (!use_4addr) { | |
1353 | if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) | |
1354 | return -EBUSY; | |
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | switch (iftype) { | |
1359 | case NL80211_IFTYPE_AP_VLAN: | |
1360 | if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) | |
1361 | return 0; | |
1362 | break; | |
1363 | case NL80211_IFTYPE_STATION: | |
1364 | if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) | |
1365 | return 0; | |
1366 | break; | |
1367 | default: | |
1368 | break; | |
1369 | } | |
1370 | ||
1371 | return -EOPNOTSUPP; | |
1372 | } | |
1373 | ||
1374 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) | |
1375 | { | |
1376 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1377 | struct vif_params params; | |
1378 | int err; | |
1379 | enum nl80211_iftype otype, ntype; | |
1380 | struct net_device *dev = info->user_ptr[1]; | |
1381 | u32 _flags, *flags = NULL; | |
1382 | bool change = false; | |
1383 | ||
1384 | memset(¶ms, 0, sizeof(params)); | |
1385 | ||
1386 | otype = ntype = dev->ieee80211_ptr->iftype; | |
1387 | ||
1388 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
1389 | ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
1390 | if (otype != ntype) | |
1391 | change = true; | |
1392 | if (ntype > NL80211_IFTYPE_MAX) | |
1393 | return -EINVAL; | |
1394 | } | |
1395 | ||
1396 | if (info->attrs[NL80211_ATTR_MESH_ID]) { | |
1397 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
1398 | ||
1399 | if (ntype != NL80211_IFTYPE_MESH_POINT) | |
1400 | return -EINVAL; | |
1401 | if (netif_running(dev)) | |
1402 | return -EBUSY; | |
1403 | ||
1404 | wdev_lock(wdev); | |
1405 | BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != | |
1406 | IEEE80211_MAX_MESH_ID_LEN); | |
1407 | wdev->mesh_id_up_len = | |
1408 | nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
1409 | memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), | |
1410 | wdev->mesh_id_up_len); | |
1411 | wdev_unlock(wdev); | |
1412 | } | |
1413 | ||
1414 | if (info->attrs[NL80211_ATTR_4ADDR]) { | |
1415 | params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); | |
1416 | change = true; | |
1417 | err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); | |
1418 | if (err) | |
1419 | return err; | |
1420 | } else { | |
1421 | params.use_4addr = -1; | |
1422 | } | |
1423 | ||
1424 | if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { | |
1425 | if (ntype != NL80211_IFTYPE_MONITOR) | |
1426 | return -EINVAL; | |
1427 | err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], | |
1428 | &_flags); | |
1429 | if (err) | |
1430 | return err; | |
1431 | ||
1432 | flags = &_flags; | |
1433 | change = true; | |
1434 | } | |
1435 | ||
1436 | if (change) | |
1437 | err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); | |
1438 | else | |
1439 | err = 0; | |
1440 | ||
1441 | if (!err && params.use_4addr != -1) | |
1442 | dev->ieee80211_ptr->use_4addr = params.use_4addr; | |
1443 | ||
1444 | return err; | |
1445 | } | |
1446 | ||
1447 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
1448 | { | |
1449 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1450 | struct vif_params params; | |
1451 | struct net_device *dev; | |
1452 | int err; | |
1453 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
1454 | u32 flags; | |
1455 | ||
1456 | memset(¶ms, 0, sizeof(params)); | |
1457 | ||
1458 | if (!info->attrs[NL80211_ATTR_IFNAME]) | |
1459 | return -EINVAL; | |
1460 | ||
1461 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
1462 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
1463 | if (type > NL80211_IFTYPE_MAX) | |
1464 | return -EINVAL; | |
1465 | } | |
1466 | ||
1467 | if (!rdev->ops->add_virtual_intf || | |
1468 | !(rdev->wiphy.interface_modes & (1 << type))) | |
1469 | return -EOPNOTSUPP; | |
1470 | ||
1471 | if (info->attrs[NL80211_ATTR_4ADDR]) { | |
1472 | params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); | |
1473 | err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); | |
1474 | if (err) | |
1475 | return err; | |
1476 | } | |
1477 | ||
1478 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? | |
1479 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
1480 | &flags); | |
1481 | dev = rdev->ops->add_virtual_intf(&rdev->wiphy, | |
1482 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), | |
1483 | type, err ? NULL : &flags, ¶ms); | |
1484 | if (IS_ERR(dev)) | |
1485 | return PTR_ERR(dev); | |
1486 | ||
1487 | if (type == NL80211_IFTYPE_MESH_POINT && | |
1488 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
1489 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
1490 | ||
1491 | wdev_lock(wdev); | |
1492 | BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != | |
1493 | IEEE80211_MAX_MESH_ID_LEN); | |
1494 | wdev->mesh_id_up_len = | |
1495 | nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
1496 | memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), | |
1497 | wdev->mesh_id_up_len); | |
1498 | wdev_unlock(wdev); | |
1499 | } | |
1500 | ||
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
1505 | { | |
1506 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1507 | struct net_device *dev = info->user_ptr[1]; | |
1508 | ||
1509 | if (!rdev->ops->del_virtual_intf) | |
1510 | return -EOPNOTSUPP; | |
1511 | ||
1512 | return rdev->ops->del_virtual_intf(&rdev->wiphy, dev); | |
1513 | } | |
1514 | ||
1515 | struct get_key_cookie { | |
1516 | struct sk_buff *msg; | |
1517 | int error; | |
1518 | int idx; | |
1519 | }; | |
1520 | ||
1521 | static void get_key_callback(void *c, struct key_params *params) | |
1522 | { | |
1523 | struct nlattr *key; | |
1524 | struct get_key_cookie *cookie = c; | |
1525 | ||
1526 | if (params->key) | |
1527 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
1528 | params->key_len, params->key); | |
1529 | ||
1530 | if (params->seq) | |
1531 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
1532 | params->seq_len, params->seq); | |
1533 | ||
1534 | if (params->cipher) | |
1535 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
1536 | params->cipher); | |
1537 | ||
1538 | key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); | |
1539 | if (!key) | |
1540 | goto nla_put_failure; | |
1541 | ||
1542 | if (params->key) | |
1543 | NLA_PUT(cookie->msg, NL80211_KEY_DATA, | |
1544 | params->key_len, params->key); | |
1545 | ||
1546 | if (params->seq) | |
1547 | NLA_PUT(cookie->msg, NL80211_KEY_SEQ, | |
1548 | params->seq_len, params->seq); | |
1549 | ||
1550 | if (params->cipher) | |
1551 | NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER, | |
1552 | params->cipher); | |
1553 | ||
1554 | NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx); | |
1555 | ||
1556 | nla_nest_end(cookie->msg, key); | |
1557 | ||
1558 | return; | |
1559 | nla_put_failure: | |
1560 | cookie->error = 1; | |
1561 | } | |
1562 | ||
1563 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
1564 | { | |
1565 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1566 | int err; | |
1567 | struct net_device *dev = info->user_ptr[1]; | |
1568 | u8 key_idx = 0; | |
1569 | const u8 *mac_addr = NULL; | |
1570 | bool pairwise; | |
1571 | struct get_key_cookie cookie = { | |
1572 | .error = 0, | |
1573 | }; | |
1574 | void *hdr; | |
1575 | struct sk_buff *msg; | |
1576 | ||
1577 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
1578 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
1579 | ||
1580 | if (key_idx > 5) | |
1581 | return -EINVAL; | |
1582 | ||
1583 | if (info->attrs[NL80211_ATTR_MAC]) | |
1584 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1585 | ||
1586 | pairwise = !!mac_addr; | |
1587 | if (info->attrs[NL80211_ATTR_KEY_TYPE]) { | |
1588 | u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); | |
1589 | if (kt >= NUM_NL80211_KEYTYPES) | |
1590 | return -EINVAL; | |
1591 | if (kt != NL80211_KEYTYPE_GROUP && | |
1592 | kt != NL80211_KEYTYPE_PAIRWISE) | |
1593 | return -EINVAL; | |
1594 | pairwise = kt == NL80211_KEYTYPE_PAIRWISE; | |
1595 | } | |
1596 | ||
1597 | if (!rdev->ops->get_key) | |
1598 | return -EOPNOTSUPP; | |
1599 | ||
1600 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1601 | if (!msg) | |
1602 | return -ENOMEM; | |
1603 | ||
1604 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
1605 | NL80211_CMD_NEW_KEY); | |
1606 | if (IS_ERR(hdr)) | |
1607 | return PTR_ERR(hdr); | |
1608 | ||
1609 | cookie.msg = msg; | |
1610 | cookie.idx = key_idx; | |
1611 | ||
1612 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1613 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
1614 | if (mac_addr) | |
1615 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
1616 | ||
1617 | if (pairwise && mac_addr && | |
1618 | !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) | |
1619 | return -ENOENT; | |
1620 | ||
1621 | err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise, | |
1622 | mac_addr, &cookie, get_key_callback); | |
1623 | ||
1624 | if (err) | |
1625 | goto free_msg; | |
1626 | ||
1627 | if (cookie.error) | |
1628 | goto nla_put_failure; | |
1629 | ||
1630 | genlmsg_end(msg, hdr); | |
1631 | return genlmsg_reply(msg, info); | |
1632 | ||
1633 | nla_put_failure: | |
1634 | err = -ENOBUFS; | |
1635 | free_msg: | |
1636 | nlmsg_free(msg); | |
1637 | return err; | |
1638 | } | |
1639 | ||
1640 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
1641 | { | |
1642 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1643 | struct key_parse key; | |
1644 | int err; | |
1645 | struct net_device *dev = info->user_ptr[1]; | |
1646 | ||
1647 | err = nl80211_parse_key(info, &key); | |
1648 | if (err) | |
1649 | return err; | |
1650 | ||
1651 | if (key.idx < 0) | |
1652 | return -EINVAL; | |
1653 | ||
1654 | /* only support setting default key */ | |
1655 | if (!key.def && !key.defmgmt) | |
1656 | return -EINVAL; | |
1657 | ||
1658 | wdev_lock(dev->ieee80211_ptr); | |
1659 | ||
1660 | if (key.def) { | |
1661 | if (!rdev->ops->set_default_key) { | |
1662 | err = -EOPNOTSUPP; | |
1663 | goto out; | |
1664 | } | |
1665 | ||
1666 | err = nl80211_key_allowed(dev->ieee80211_ptr); | |
1667 | if (err) | |
1668 | goto out; | |
1669 | ||
1670 | if (!(rdev->wiphy.flags & | |
1671 | WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS)) { | |
1672 | if (!key.def_uni || !key.def_multi) { | |
1673 | err = -EOPNOTSUPP; | |
1674 | goto out; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx, | |
1679 | key.def_uni, key.def_multi); | |
1680 | ||
1681 | if (err) | |
1682 | goto out; | |
1683 | ||
1684 | #ifdef CONFIG_CFG80211_WEXT | |
1685 | dev->ieee80211_ptr->wext.default_key = key.idx; | |
1686 | #endif | |
1687 | } else { | |
1688 | if (key.def_uni || !key.def_multi) { | |
1689 | err = -EINVAL; | |
1690 | goto out; | |
1691 | } | |
1692 | ||
1693 | if (!rdev->ops->set_default_mgmt_key) { | |
1694 | err = -EOPNOTSUPP; | |
1695 | goto out; | |
1696 | } | |
1697 | ||
1698 | err = nl80211_key_allowed(dev->ieee80211_ptr); | |
1699 | if (err) | |
1700 | goto out; | |
1701 | ||
1702 | err = rdev->ops->set_default_mgmt_key(&rdev->wiphy, | |
1703 | dev, key.idx); | |
1704 | if (err) | |
1705 | goto out; | |
1706 | ||
1707 | #ifdef CONFIG_CFG80211_WEXT | |
1708 | dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; | |
1709 | #endif | |
1710 | } | |
1711 | ||
1712 | out: | |
1713 | wdev_unlock(dev->ieee80211_ptr); | |
1714 | ||
1715 | return err; | |
1716 | } | |
1717 | ||
1718 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
1719 | { | |
1720 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1721 | int err; | |
1722 | struct net_device *dev = info->user_ptr[1]; | |
1723 | struct key_parse key; | |
1724 | const u8 *mac_addr = NULL; | |
1725 | ||
1726 | err = nl80211_parse_key(info, &key); | |
1727 | if (err) | |
1728 | return err; | |
1729 | ||
1730 | if (!key.p.key) | |
1731 | return -EINVAL; | |
1732 | ||
1733 | if (info->attrs[NL80211_ATTR_MAC]) | |
1734 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1735 | ||
1736 | if (key.type == -1) { | |
1737 | if (mac_addr) | |
1738 | key.type = NL80211_KEYTYPE_PAIRWISE; | |
1739 | else | |
1740 | key.type = NL80211_KEYTYPE_GROUP; | |
1741 | } | |
1742 | ||
1743 | /* for now */ | |
1744 | if (key.type != NL80211_KEYTYPE_PAIRWISE && | |
1745 | key.type != NL80211_KEYTYPE_GROUP) | |
1746 | return -EINVAL; | |
1747 | ||
1748 | if (!rdev->ops->add_key) | |
1749 | return -EOPNOTSUPP; | |
1750 | ||
1751 | if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, | |
1752 | key.type == NL80211_KEYTYPE_PAIRWISE, | |
1753 | mac_addr)) | |
1754 | return -EINVAL; | |
1755 | ||
1756 | wdev_lock(dev->ieee80211_ptr); | |
1757 | err = nl80211_key_allowed(dev->ieee80211_ptr); | |
1758 | if (!err) | |
1759 | err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, | |
1760 | key.type == NL80211_KEYTYPE_PAIRWISE, | |
1761 | mac_addr, &key.p); | |
1762 | wdev_unlock(dev->ieee80211_ptr); | |
1763 | ||
1764 | return err; | |
1765 | } | |
1766 | ||
1767 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
1768 | { | |
1769 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1770 | int err; | |
1771 | struct net_device *dev = info->user_ptr[1]; | |
1772 | u8 *mac_addr = NULL; | |
1773 | struct key_parse key; | |
1774 | ||
1775 | err = nl80211_parse_key(info, &key); | |
1776 | if (err) | |
1777 | return err; | |
1778 | ||
1779 | if (info->attrs[NL80211_ATTR_MAC]) | |
1780 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1781 | ||
1782 | if (key.type == -1) { | |
1783 | if (mac_addr) | |
1784 | key.type = NL80211_KEYTYPE_PAIRWISE; | |
1785 | else | |
1786 | key.type = NL80211_KEYTYPE_GROUP; | |
1787 | } | |
1788 | ||
1789 | /* for now */ | |
1790 | if (key.type != NL80211_KEYTYPE_PAIRWISE && | |
1791 | key.type != NL80211_KEYTYPE_GROUP) | |
1792 | return -EINVAL; | |
1793 | ||
1794 | if (!rdev->ops->del_key) | |
1795 | return -EOPNOTSUPP; | |
1796 | ||
1797 | wdev_lock(dev->ieee80211_ptr); | |
1798 | err = nl80211_key_allowed(dev->ieee80211_ptr); | |
1799 | ||
1800 | if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && | |
1801 | !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) | |
1802 | err = -ENOENT; | |
1803 | ||
1804 | if (!err) | |
1805 | err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, | |
1806 | key.type == NL80211_KEYTYPE_PAIRWISE, | |
1807 | mac_addr); | |
1808 | ||
1809 | #ifdef CONFIG_CFG80211_WEXT | |
1810 | if (!err) { | |
1811 | if (key.idx == dev->ieee80211_ptr->wext.default_key) | |
1812 | dev->ieee80211_ptr->wext.default_key = -1; | |
1813 | else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) | |
1814 | dev->ieee80211_ptr->wext.default_mgmt_key = -1; | |
1815 | } | |
1816 | #endif | |
1817 | wdev_unlock(dev->ieee80211_ptr); | |
1818 | ||
1819 | return err; | |
1820 | } | |
1821 | ||
1822 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) | |
1823 | { | |
1824 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
1825 | struct beacon_parameters *info); | |
1826 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1827 | struct net_device *dev = info->user_ptr[1]; | |
1828 | struct beacon_parameters params; | |
1829 | int haveinfo = 0; | |
1830 | ||
1831 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) | |
1832 | return -EINVAL; | |
1833 | ||
1834 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
1835 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
1836 | return -EOPNOTSUPP; | |
1837 | ||
1838 | switch (info->genlhdr->cmd) { | |
1839 | case NL80211_CMD_NEW_BEACON: | |
1840 | /* these are required for NEW_BEACON */ | |
1841 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
1842 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
1843 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) | |
1844 | return -EINVAL; | |
1845 | ||
1846 | call = rdev->ops->add_beacon; | |
1847 | break; | |
1848 | case NL80211_CMD_SET_BEACON: | |
1849 | call = rdev->ops->set_beacon; | |
1850 | break; | |
1851 | default: | |
1852 | WARN_ON(1); | |
1853 | return -EOPNOTSUPP; | |
1854 | } | |
1855 | ||
1856 | if (!call) | |
1857 | return -EOPNOTSUPP; | |
1858 | ||
1859 | memset(¶ms, 0, sizeof(params)); | |
1860 | ||
1861 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
1862 | params.interval = | |
1863 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
1864 | haveinfo = 1; | |
1865 | } | |
1866 | ||
1867 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
1868 | params.dtim_period = | |
1869 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
1870 | haveinfo = 1; | |
1871 | } | |
1872 | ||
1873 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
1874 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1875 | params.head_len = | |
1876 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
1877 | haveinfo = 1; | |
1878 | } | |
1879 | ||
1880 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
1881 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1882 | params.tail_len = | |
1883 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
1884 | haveinfo = 1; | |
1885 | } | |
1886 | ||
1887 | if (!haveinfo) | |
1888 | return -EINVAL; | |
1889 | ||
1890 | return call(&rdev->wiphy, dev, ¶ms); | |
1891 | } | |
1892 | ||
1893 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
1894 | { | |
1895 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
1896 | struct net_device *dev = info->user_ptr[1]; | |
1897 | ||
1898 | if (!rdev->ops->del_beacon) | |
1899 | return -EOPNOTSUPP; | |
1900 | ||
1901 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
1902 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
1903 | return -EOPNOTSUPP; | |
1904 | ||
1905 | return rdev->ops->del_beacon(&rdev->wiphy, dev); | |
1906 | } | |
1907 | ||
1908 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { | |
1909 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
1910 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
1911 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
1912 | [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, | |
1913 | }; | |
1914 | ||
1915 | static int parse_station_flags(struct genl_info *info, | |
1916 | struct station_parameters *params) | |
1917 | { | |
1918 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
1919 | struct nlattr *nla; | |
1920 | int flag; | |
1921 | ||
1922 | /* | |
1923 | * Try parsing the new attribute first so userspace | |
1924 | * can specify both for older kernels. | |
1925 | */ | |
1926 | nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; | |
1927 | if (nla) { | |
1928 | struct nl80211_sta_flag_update *sta_flags; | |
1929 | ||
1930 | sta_flags = nla_data(nla); | |
1931 | params->sta_flags_mask = sta_flags->mask; | |
1932 | params->sta_flags_set = sta_flags->set; | |
1933 | if ((params->sta_flags_mask | | |
1934 | params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) | |
1935 | return -EINVAL; | |
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | /* if present, parse the old attribute */ | |
1940 | ||
1941 | nla = info->attrs[NL80211_ATTR_STA_FLAGS]; | |
1942 | if (!nla) | |
1943 | return 0; | |
1944 | ||
1945 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
1946 | nla, sta_flags_policy)) | |
1947 | return -EINVAL; | |
1948 | ||
1949 | params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1; | |
1950 | params->sta_flags_mask &= ~1; | |
1951 | ||
1952 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
1953 | if (flags[flag]) | |
1954 | params->sta_flags_set |= (1<<flag); | |
1955 | ||
1956 | return 0; | |
1957 | } | |
1958 | ||
1959 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, | |
1960 | int flags, struct net_device *dev, | |
1961 | const u8 *mac_addr, struct station_info *sinfo) | |
1962 | { | |
1963 | void *hdr; | |
1964 | struct nlattr *sinfoattr, *txrate; | |
1965 | u16 bitrate; | |
1966 | ||
1967 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1968 | if (!hdr) | |
1969 | return -1; | |
1970 | ||
1971 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1972 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
1973 | ||
1974 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation); | |
1975 | ||
1976 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); | |
1977 | if (!sinfoattr) | |
1978 | goto nla_put_failure; | |
1979 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) | |
1980 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, | |
1981 | sinfo->inactive_time); | |
1982 | if (sinfo->filled & STATION_INFO_RX_BYTES) | |
1983 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, | |
1984 | sinfo->rx_bytes); | |
1985 | if (sinfo->filled & STATION_INFO_TX_BYTES) | |
1986 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, | |
1987 | sinfo->tx_bytes); | |
1988 | if (sinfo->filled & STATION_INFO_LLID) | |
1989 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, | |
1990 | sinfo->llid); | |
1991 | if (sinfo->filled & STATION_INFO_PLID) | |
1992 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, | |
1993 | sinfo->plid); | |
1994 | if (sinfo->filled & STATION_INFO_PLINK_STATE) | |
1995 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, | |
1996 | sinfo->plink_state); | |
1997 | if (sinfo->filled & STATION_INFO_SIGNAL) | |
1998 | NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, | |
1999 | sinfo->signal); | |
2000 | if (sinfo->filled & STATION_INFO_SIGNAL_AVG) | |
2001 | NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG, | |
2002 | sinfo->signal_avg); | |
2003 | if (sinfo->filled & STATION_INFO_TX_BITRATE) { | |
2004 | txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE); | |
2005 | if (!txrate) | |
2006 | goto nla_put_failure; | |
2007 | ||
2008 | /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ | |
2009 | bitrate = cfg80211_calculate_bitrate(&sinfo->txrate); | |
2010 | if (bitrate > 0) | |
2011 | NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); | |
2012 | ||
2013 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS) | |
2014 | NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, | |
2015 | sinfo->txrate.mcs); | |
2016 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) | |
2017 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); | |
2018 | if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI) | |
2019 | NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); | |
2020 | ||
2021 | nla_nest_end(msg, txrate); | |
2022 | } | |
2023 | if (sinfo->filled & STATION_INFO_RX_PACKETS) | |
2024 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, | |
2025 | sinfo->rx_packets); | |
2026 | if (sinfo->filled & STATION_INFO_TX_PACKETS) | |
2027 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, | |
2028 | sinfo->tx_packets); | |
2029 | if (sinfo->filled & STATION_INFO_TX_RETRIES) | |
2030 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES, | |
2031 | sinfo->tx_retries); | |
2032 | if (sinfo->filled & STATION_INFO_TX_FAILED) | |
2033 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED, | |
2034 | sinfo->tx_failed); | |
2035 | nla_nest_end(msg, sinfoattr); | |
2036 | ||
2037 | return genlmsg_end(msg, hdr); | |
2038 | ||
2039 | nla_put_failure: | |
2040 | genlmsg_cancel(msg, hdr); | |
2041 | return -EMSGSIZE; | |
2042 | } | |
2043 | ||
2044 | static int nl80211_dump_station(struct sk_buff *skb, | |
2045 | struct netlink_callback *cb) | |
2046 | { | |
2047 | struct station_info sinfo; | |
2048 | struct cfg80211_registered_device *dev; | |
2049 | struct net_device *netdev; | |
2050 | u8 mac_addr[ETH_ALEN]; | |
2051 | int sta_idx = cb->args[1]; | |
2052 | int err; | |
2053 | ||
2054 | err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); | |
2055 | if (err) | |
2056 | return err; | |
2057 | ||
2058 | if (!dev->ops->dump_station) { | |
2059 | err = -EOPNOTSUPP; | |
2060 | goto out_err; | |
2061 | } | |
2062 | ||
2063 | while (1) { | |
2064 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, | |
2065 | mac_addr, &sinfo); | |
2066 | if (err == -ENOENT) | |
2067 | break; | |
2068 | if (err) | |
2069 | goto out_err; | |
2070 | ||
2071 | if (nl80211_send_station(skb, | |
2072 | NETLINK_CB(cb->skb).pid, | |
2073 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
2074 | netdev, mac_addr, | |
2075 | &sinfo) < 0) | |
2076 | goto out; | |
2077 | ||
2078 | sta_idx++; | |
2079 | } | |
2080 | ||
2081 | ||
2082 | out: | |
2083 | cb->args[1] = sta_idx; | |
2084 | err = skb->len; | |
2085 | out_err: | |
2086 | nl80211_finish_netdev_dump(dev); | |
2087 | ||
2088 | return err; | |
2089 | } | |
2090 | ||
2091 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) | |
2092 | { | |
2093 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2094 | struct net_device *dev = info->user_ptr[1]; | |
2095 | struct station_info sinfo; | |
2096 | struct sk_buff *msg; | |
2097 | u8 *mac_addr = NULL; | |
2098 | int err; | |
2099 | ||
2100 | memset(&sinfo, 0, sizeof(sinfo)); | |
2101 | ||
2102 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2103 | return -EINVAL; | |
2104 | ||
2105 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2106 | ||
2107 | if (!rdev->ops->get_station) | |
2108 | return -EOPNOTSUPP; | |
2109 | ||
2110 | err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); | |
2111 | if (err) | |
2112 | return err; | |
2113 | ||
2114 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2115 | if (!msg) | |
2116 | return -ENOMEM; | |
2117 | ||
2118 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
2119 | dev, mac_addr, &sinfo) < 0) { | |
2120 | nlmsg_free(msg); | |
2121 | return -ENOBUFS; | |
2122 | } | |
2123 | ||
2124 | return genlmsg_reply(msg, info); | |
2125 | } | |
2126 | ||
2127 | /* | |
2128 | * Get vlan interface making sure it is running and on the right wiphy. | |
2129 | */ | |
2130 | static int get_vlan(struct genl_info *info, | |
2131 | struct cfg80211_registered_device *rdev, | |
2132 | struct net_device **vlan) | |
2133 | { | |
2134 | struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; | |
2135 | *vlan = NULL; | |
2136 | ||
2137 | if (vlanattr) { | |
2138 | *vlan = dev_get_by_index(genl_info_net(info), | |
2139 | nla_get_u32(vlanattr)); | |
2140 | if (!*vlan) | |
2141 | return -ENODEV; | |
2142 | if (!(*vlan)->ieee80211_ptr) | |
2143 | return -EINVAL; | |
2144 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
2145 | return -EINVAL; | |
2146 | if (!netif_running(*vlan)) | |
2147 | return -ENETDOWN; | |
2148 | } | |
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
2153 | { | |
2154 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2155 | int err; | |
2156 | struct net_device *dev = info->user_ptr[1]; | |
2157 | struct station_parameters params; | |
2158 | u8 *mac_addr = NULL; | |
2159 | ||
2160 | memset(¶ms, 0, sizeof(params)); | |
2161 | ||
2162 | params.listen_interval = -1; | |
2163 | ||
2164 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
2165 | return -EINVAL; | |
2166 | ||
2167 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2168 | return -EINVAL; | |
2169 | ||
2170 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2171 | ||
2172 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
2173 | params.supported_rates = | |
2174 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
2175 | params.supported_rates_len = | |
2176 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
2177 | } | |
2178 | ||
2179 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
2180 | params.listen_interval = | |
2181 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
2182 | ||
2183 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) | |
2184 | params.ht_capa = | |
2185 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
2186 | ||
2187 | if (parse_station_flags(info, ¶ms)) | |
2188 | return -EINVAL; | |
2189 | ||
2190 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) | |
2191 | params.plink_action = | |
2192 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); | |
2193 | ||
2194 | err = get_vlan(info, rdev, ¶ms.vlan); | |
2195 | if (err) | |
2196 | goto out; | |
2197 | ||
2198 | /* validate settings */ | |
2199 | err = 0; | |
2200 | ||
2201 | switch (dev->ieee80211_ptr->iftype) { | |
2202 | case NL80211_IFTYPE_AP: | |
2203 | case NL80211_IFTYPE_AP_VLAN: | |
2204 | case NL80211_IFTYPE_P2P_GO: | |
2205 | /* disallow mesh-specific things */ | |
2206 | if (params.plink_action) | |
2207 | err = -EINVAL; | |
2208 | break; | |
2209 | case NL80211_IFTYPE_P2P_CLIENT: | |
2210 | case NL80211_IFTYPE_STATION: | |
2211 | /* disallow everything but AUTHORIZED flag */ | |
2212 | if (params.plink_action) | |
2213 | err = -EINVAL; | |
2214 | if (params.vlan) | |
2215 | err = -EINVAL; | |
2216 | if (params.supported_rates) | |
2217 | err = -EINVAL; | |
2218 | if (params.ht_capa) | |
2219 | err = -EINVAL; | |
2220 | if (params.listen_interval >= 0) | |
2221 | err = -EINVAL; | |
2222 | if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) | |
2223 | err = -EINVAL; | |
2224 | break; | |
2225 | case NL80211_IFTYPE_MESH_POINT: | |
2226 | /* disallow things mesh doesn't support */ | |
2227 | if (params.vlan) | |
2228 | err = -EINVAL; | |
2229 | if (params.ht_capa) | |
2230 | err = -EINVAL; | |
2231 | if (params.listen_interval >= 0) | |
2232 | err = -EINVAL; | |
2233 | if (params.supported_rates) | |
2234 | err = -EINVAL; | |
2235 | if (params.sta_flags_mask) | |
2236 | err = -EINVAL; | |
2237 | break; | |
2238 | default: | |
2239 | err = -EINVAL; | |
2240 | } | |
2241 | ||
2242 | if (err) | |
2243 | goto out; | |
2244 | ||
2245 | if (!rdev->ops->change_station) { | |
2246 | err = -EOPNOTSUPP; | |
2247 | goto out; | |
2248 | } | |
2249 | ||
2250 | err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms); | |
2251 | ||
2252 | out: | |
2253 | if (params.vlan) | |
2254 | dev_put(params.vlan); | |
2255 | ||
2256 | return err; | |
2257 | } | |
2258 | ||
2259 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
2260 | { | |
2261 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2262 | int err; | |
2263 | struct net_device *dev = info->user_ptr[1]; | |
2264 | struct station_parameters params; | |
2265 | u8 *mac_addr = NULL; | |
2266 | ||
2267 | memset(¶ms, 0, sizeof(params)); | |
2268 | ||
2269 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2270 | return -EINVAL; | |
2271 | ||
2272 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
2273 | return -EINVAL; | |
2274 | ||
2275 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
2276 | return -EINVAL; | |
2277 | ||
2278 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
2279 | return -EINVAL; | |
2280 | ||
2281 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2282 | params.supported_rates = | |
2283 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
2284 | params.supported_rates_len = | |
2285 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
2286 | params.listen_interval = | |
2287 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
2288 | ||
2289 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); | |
2290 | if (!params.aid || params.aid > IEEE80211_MAX_AID) | |
2291 | return -EINVAL; | |
2292 | ||
2293 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) | |
2294 | params.ht_capa = | |
2295 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
2296 | ||
2297 | if (parse_station_flags(info, ¶ms)) | |
2298 | return -EINVAL; | |
2299 | ||
2300 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
2301 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && | |
2302 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
2303 | return -EINVAL; | |
2304 | ||
2305 | err = get_vlan(info, rdev, ¶ms.vlan); | |
2306 | if (err) | |
2307 | goto out; | |
2308 | ||
2309 | /* validate settings */ | |
2310 | err = 0; | |
2311 | ||
2312 | if (!rdev->ops->add_station) { | |
2313 | err = -EOPNOTSUPP; | |
2314 | goto out; | |
2315 | } | |
2316 | ||
2317 | err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms); | |
2318 | ||
2319 | out: | |
2320 | if (params.vlan) | |
2321 | dev_put(params.vlan); | |
2322 | return err; | |
2323 | } | |
2324 | ||
2325 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
2326 | { | |
2327 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2328 | struct net_device *dev = info->user_ptr[1]; | |
2329 | u8 *mac_addr = NULL; | |
2330 | ||
2331 | if (info->attrs[NL80211_ATTR_MAC]) | |
2332 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2333 | ||
2334 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
2335 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && | |
2336 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && | |
2337 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
2338 | return -EINVAL; | |
2339 | ||
2340 | if (!rdev->ops->del_station) | |
2341 | return -EOPNOTSUPP; | |
2342 | ||
2343 | return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); | |
2344 | } | |
2345 | ||
2346 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, | |
2347 | int flags, struct net_device *dev, | |
2348 | u8 *dst, u8 *next_hop, | |
2349 | struct mpath_info *pinfo) | |
2350 | { | |
2351 | void *hdr; | |
2352 | struct nlattr *pinfoattr; | |
2353 | ||
2354 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
2355 | if (!hdr) | |
2356 | return -1; | |
2357 | ||
2358 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
2359 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); | |
2360 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); | |
2361 | ||
2362 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation); | |
2363 | ||
2364 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); | |
2365 | if (!pinfoattr) | |
2366 | goto nla_put_failure; | |
2367 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) | |
2368 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, | |
2369 | pinfo->frame_qlen); | |
2370 | if (pinfo->filled & MPATH_INFO_SN) | |
2371 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN, | |
2372 | pinfo->sn); | |
2373 | if (pinfo->filled & MPATH_INFO_METRIC) | |
2374 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, | |
2375 | pinfo->metric); | |
2376 | if (pinfo->filled & MPATH_INFO_EXPTIME) | |
2377 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, | |
2378 | pinfo->exptime); | |
2379 | if (pinfo->filled & MPATH_INFO_FLAGS) | |
2380 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, | |
2381 | pinfo->flags); | |
2382 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) | |
2383 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, | |
2384 | pinfo->discovery_timeout); | |
2385 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) | |
2386 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, | |
2387 | pinfo->discovery_retries); | |
2388 | ||
2389 | nla_nest_end(msg, pinfoattr); | |
2390 | ||
2391 | return genlmsg_end(msg, hdr); | |
2392 | ||
2393 | nla_put_failure: | |
2394 | genlmsg_cancel(msg, hdr); | |
2395 | return -EMSGSIZE; | |
2396 | } | |
2397 | ||
2398 | static int nl80211_dump_mpath(struct sk_buff *skb, | |
2399 | struct netlink_callback *cb) | |
2400 | { | |
2401 | struct mpath_info pinfo; | |
2402 | struct cfg80211_registered_device *dev; | |
2403 | struct net_device *netdev; | |
2404 | u8 dst[ETH_ALEN]; | |
2405 | u8 next_hop[ETH_ALEN]; | |
2406 | int path_idx = cb->args[1]; | |
2407 | int err; | |
2408 | ||
2409 | err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); | |
2410 | if (err) | |
2411 | return err; | |
2412 | ||
2413 | if (!dev->ops->dump_mpath) { | |
2414 | err = -EOPNOTSUPP; | |
2415 | goto out_err; | |
2416 | } | |
2417 | ||
2418 | if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { | |
2419 | err = -EOPNOTSUPP; | |
2420 | goto out_err; | |
2421 | } | |
2422 | ||
2423 | while (1) { | |
2424 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, | |
2425 | dst, next_hop, &pinfo); | |
2426 | if (err == -ENOENT) | |
2427 | break; | |
2428 | if (err) | |
2429 | goto out_err; | |
2430 | ||
2431 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, | |
2432 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
2433 | netdev, dst, next_hop, | |
2434 | &pinfo) < 0) | |
2435 | goto out; | |
2436 | ||
2437 | path_idx++; | |
2438 | } | |
2439 | ||
2440 | ||
2441 | out: | |
2442 | cb->args[1] = path_idx; | |
2443 | err = skb->len; | |
2444 | out_err: | |
2445 | nl80211_finish_netdev_dump(dev); | |
2446 | return err; | |
2447 | } | |
2448 | ||
2449 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) | |
2450 | { | |
2451 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2452 | int err; | |
2453 | struct net_device *dev = info->user_ptr[1]; | |
2454 | struct mpath_info pinfo; | |
2455 | struct sk_buff *msg; | |
2456 | u8 *dst = NULL; | |
2457 | u8 next_hop[ETH_ALEN]; | |
2458 | ||
2459 | memset(&pinfo, 0, sizeof(pinfo)); | |
2460 | ||
2461 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2462 | return -EINVAL; | |
2463 | ||
2464 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2465 | ||
2466 | if (!rdev->ops->get_mpath) | |
2467 | return -EOPNOTSUPP; | |
2468 | ||
2469 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
2470 | return -EOPNOTSUPP; | |
2471 | ||
2472 | err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo); | |
2473 | if (err) | |
2474 | return err; | |
2475 | ||
2476 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2477 | if (!msg) | |
2478 | return -ENOMEM; | |
2479 | ||
2480 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, | |
2481 | dev, dst, next_hop, &pinfo) < 0) { | |
2482 | nlmsg_free(msg); | |
2483 | return -ENOBUFS; | |
2484 | } | |
2485 | ||
2486 | return genlmsg_reply(msg, info); | |
2487 | } | |
2488 | ||
2489 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) | |
2490 | { | |
2491 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2492 | struct net_device *dev = info->user_ptr[1]; | |
2493 | u8 *dst = NULL; | |
2494 | u8 *next_hop = NULL; | |
2495 | ||
2496 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2497 | return -EINVAL; | |
2498 | ||
2499 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
2500 | return -EINVAL; | |
2501 | ||
2502 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2503 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
2504 | ||
2505 | if (!rdev->ops->change_mpath) | |
2506 | return -EOPNOTSUPP; | |
2507 | ||
2508 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
2509 | return -EOPNOTSUPP; | |
2510 | ||
2511 | return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); | |
2512 | } | |
2513 | ||
2514 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) | |
2515 | { | |
2516 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2517 | struct net_device *dev = info->user_ptr[1]; | |
2518 | u8 *dst = NULL; | |
2519 | u8 *next_hop = NULL; | |
2520 | ||
2521 | if (!info->attrs[NL80211_ATTR_MAC]) | |
2522 | return -EINVAL; | |
2523 | ||
2524 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
2525 | return -EINVAL; | |
2526 | ||
2527 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2528 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
2529 | ||
2530 | if (!rdev->ops->add_mpath) | |
2531 | return -EOPNOTSUPP; | |
2532 | ||
2533 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
2534 | return -EOPNOTSUPP; | |
2535 | ||
2536 | return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); | |
2537 | } | |
2538 | ||
2539 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) | |
2540 | { | |
2541 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2542 | struct net_device *dev = info->user_ptr[1]; | |
2543 | u8 *dst = NULL; | |
2544 | ||
2545 | if (info->attrs[NL80211_ATTR_MAC]) | |
2546 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
2547 | ||
2548 | if (!rdev->ops->del_mpath) | |
2549 | return -EOPNOTSUPP; | |
2550 | ||
2551 | return rdev->ops->del_mpath(&rdev->wiphy, dev, dst); | |
2552 | } | |
2553 | ||
2554 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) | |
2555 | { | |
2556 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2557 | struct net_device *dev = info->user_ptr[1]; | |
2558 | struct bss_parameters params; | |
2559 | ||
2560 | memset(¶ms, 0, sizeof(params)); | |
2561 | /* default to not changing parameters */ | |
2562 | params.use_cts_prot = -1; | |
2563 | params.use_short_preamble = -1; | |
2564 | params.use_short_slot_time = -1; | |
2565 | params.ap_isolate = -1; | |
2566 | params.ht_opmode = -1; | |
2567 | ||
2568 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) | |
2569 | params.use_cts_prot = | |
2570 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); | |
2571 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) | |
2572 | params.use_short_preamble = | |
2573 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); | |
2574 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) | |
2575 | params.use_short_slot_time = | |
2576 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); | |
2577 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { | |
2578 | params.basic_rates = | |
2579 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
2580 | params.basic_rates_len = | |
2581 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
2582 | } | |
2583 | if (info->attrs[NL80211_ATTR_AP_ISOLATE]) | |
2584 | params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); | |
2585 | if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) | |
2586 | params.ht_opmode = | |
2587 | nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); | |
2588 | ||
2589 | if (!rdev->ops->change_bss) | |
2590 | return -EOPNOTSUPP; | |
2591 | ||
2592 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
2593 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
2594 | return -EOPNOTSUPP; | |
2595 | ||
2596 | return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); | |
2597 | } | |
2598 | ||
2599 | static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { | |
2600 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
2601 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
2602 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
2603 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
2604 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
2605 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
2606 | }; | |
2607 | ||
2608 | static int parse_reg_rule(struct nlattr *tb[], | |
2609 | struct ieee80211_reg_rule *reg_rule) | |
2610 | { | |
2611 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; | |
2612 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; | |
2613 | ||
2614 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) | |
2615 | return -EINVAL; | |
2616 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) | |
2617 | return -EINVAL; | |
2618 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) | |
2619 | return -EINVAL; | |
2620 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
2621 | return -EINVAL; | |
2622 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
2623 | return -EINVAL; | |
2624 | ||
2625 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); | |
2626 | ||
2627 | freq_range->start_freq_khz = | |
2628 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); | |
2629 | freq_range->end_freq_khz = | |
2630 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); | |
2631 | freq_range->max_bandwidth_khz = | |
2632 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
2633 | ||
2634 | power_rule->max_eirp = | |
2635 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
2636 | ||
2637 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) | |
2638 | power_rule->max_antenna_gain = | |
2639 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
2640 | ||
2641 | return 0; | |
2642 | } | |
2643 | ||
2644 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) | |
2645 | { | |
2646 | int r; | |
2647 | char *data = NULL; | |
2648 | ||
2649 | /* | |
2650 | * You should only get this when cfg80211 hasn't yet initialized | |
2651 | * completely when built-in to the kernel right between the time | |
2652 | * window between nl80211_init() and regulatory_init(), if that is | |
2653 | * even possible. | |
2654 | */ | |
2655 | mutex_lock(&cfg80211_mutex); | |
2656 | if (unlikely(!cfg80211_regdomain)) { | |
2657 | mutex_unlock(&cfg80211_mutex); | |
2658 | return -EINPROGRESS; | |
2659 | } | |
2660 | mutex_unlock(&cfg80211_mutex); | |
2661 | ||
2662 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
2663 | return -EINVAL; | |
2664 | ||
2665 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
2666 | ||
2667 | r = regulatory_hint_user(data); | |
2668 | ||
2669 | return r; | |
2670 | } | |
2671 | ||
2672 | static int nl80211_get_mesh_params(struct sk_buff *skb, | |
2673 | struct genl_info *info) | |
2674 | { | |
2675 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2676 | struct net_device *dev = info->user_ptr[1]; | |
2677 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
2678 | struct mesh_config cur_params; | |
2679 | int err = 0; | |
2680 | void *hdr; | |
2681 | struct nlattr *pinfoattr; | |
2682 | struct sk_buff *msg; | |
2683 | ||
2684 | if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) | |
2685 | return -EOPNOTSUPP; | |
2686 | ||
2687 | if (!rdev->ops->get_mesh_params) | |
2688 | return -EOPNOTSUPP; | |
2689 | ||
2690 | wdev_lock(wdev); | |
2691 | /* If not connected, get default parameters */ | |
2692 | if (!wdev->mesh_id_len) | |
2693 | memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); | |
2694 | else | |
2695 | err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, | |
2696 | &cur_params); | |
2697 | wdev_unlock(wdev); | |
2698 | ||
2699 | if (err) | |
2700 | return err; | |
2701 | ||
2702 | /* Draw up a netlink message to send back */ | |
2703 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2704 | if (!msg) | |
2705 | return -ENOMEM; | |
2706 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
2707 | NL80211_CMD_GET_MESH_PARAMS); | |
2708 | if (!hdr) | |
2709 | goto nla_put_failure; | |
2710 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS); | |
2711 | if (!pinfoattr) | |
2712 | goto nla_put_failure; | |
2713 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
2714 | NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, | |
2715 | cur_params.dot11MeshRetryTimeout); | |
2716 | NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, | |
2717 | cur_params.dot11MeshConfirmTimeout); | |
2718 | NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, | |
2719 | cur_params.dot11MeshHoldingTimeout); | |
2720 | NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, | |
2721 | cur_params.dot11MeshMaxPeerLinks); | |
2722 | NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, | |
2723 | cur_params.dot11MeshMaxRetries); | |
2724 | NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, | |
2725 | cur_params.dot11MeshTTL); | |
2726 | NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL, | |
2727 | cur_params.element_ttl); | |
2728 | NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, | |
2729 | cur_params.auto_open_plinks); | |
2730 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
2731 | cur_params.dot11MeshHWMPmaxPREQretries); | |
2732 | NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, | |
2733 | cur_params.path_refresh_time); | |
2734 | NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
2735 | cur_params.min_discovery_timeout); | |
2736 | NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
2737 | cur_params.dot11MeshHWMPactivePathTimeout); | |
2738 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
2739 | cur_params.dot11MeshHWMPpreqMinInterval); | |
2740 | NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
2741 | cur_params.dot11MeshHWMPnetDiameterTraversalTime); | |
2742 | NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, | |
2743 | cur_params.dot11MeshHWMPRootMode); | |
2744 | nla_nest_end(msg, pinfoattr); | |
2745 | genlmsg_end(msg, hdr); | |
2746 | return genlmsg_reply(msg, info); | |
2747 | ||
2748 | nla_put_failure: | |
2749 | genlmsg_cancel(msg, hdr); | |
2750 | nlmsg_free(msg); | |
2751 | return -ENOBUFS; | |
2752 | } | |
2753 | ||
2754 | static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { | |
2755 | [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, | |
2756 | [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, | |
2757 | [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, | |
2758 | [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, | |
2759 | [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, | |
2760 | [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, | |
2761 | [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, | |
2762 | [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, | |
2763 | ||
2764 | [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, | |
2765 | [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, | |
2766 | [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, | |
2767 | [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, | |
2768 | [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, | |
2769 | [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, | |
2770 | }; | |
2771 | ||
2772 | static int nl80211_parse_mesh_params(struct genl_info *info, | |
2773 | struct mesh_config *cfg, | |
2774 | u32 *mask_out) | |
2775 | { | |
2776 | struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; | |
2777 | u32 mask = 0; | |
2778 | ||
2779 | #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ | |
2780 | do {\ | |
2781 | if (table[attr_num]) {\ | |
2782 | cfg->param = nla_fn(table[attr_num]); \ | |
2783 | mask |= (1 << (attr_num - 1)); \ | |
2784 | } \ | |
2785 | } while (0);\ | |
2786 | ||
2787 | ||
2788 | if (!info->attrs[NL80211_ATTR_MESH_PARAMS]) | |
2789 | return -EINVAL; | |
2790 | if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, | |
2791 | info->attrs[NL80211_ATTR_MESH_PARAMS], | |
2792 | nl80211_meshconf_params_policy)) | |
2793 | return -EINVAL; | |
2794 | ||
2795 | /* This makes sure that there aren't more than 32 mesh config | |
2796 | * parameters (otherwise our bitfield scheme would not work.) */ | |
2797 | BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); | |
2798 | ||
2799 | /* Fill in the params struct */ | |
2800 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, | |
2801 | mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); | |
2802 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, | |
2803 | mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); | |
2804 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, | |
2805 | mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); | |
2806 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, | |
2807 | mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); | |
2808 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, | |
2809 | mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); | |
2810 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, | |
2811 | mask, NL80211_MESHCONF_TTL, nla_get_u8); | |
2812 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, | |
2813 | mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8); | |
2814 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, | |
2815 | mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); | |
2816 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, | |
2817 | mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, | |
2818 | nla_get_u8); | |
2819 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, | |
2820 | mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); | |
2821 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, | |
2822 | mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, | |
2823 | nla_get_u16); | |
2824 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, | |
2825 | mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, | |
2826 | nla_get_u32); | |
2827 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, | |
2828 | mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, | |
2829 | nla_get_u16); | |
2830 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, | |
2831 | dot11MeshHWMPnetDiameterTraversalTime, | |
2832 | mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, | |
2833 | nla_get_u16); | |
2834 | FILL_IN_MESH_PARAM_IF_SET(tb, cfg, | |
2835 | dot11MeshHWMPRootMode, mask, | |
2836 | NL80211_MESHCONF_HWMP_ROOTMODE, | |
2837 | nla_get_u8); | |
2838 | ||
2839 | if (mask_out) | |
2840 | *mask_out = mask; | |
2841 | return 0; | |
2842 | ||
2843 | #undef FILL_IN_MESH_PARAM_IF_SET | |
2844 | } | |
2845 | ||
2846 | static int nl80211_update_mesh_params(struct sk_buff *skb, | |
2847 | struct genl_info *info) | |
2848 | { | |
2849 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
2850 | struct net_device *dev = info->user_ptr[1]; | |
2851 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
2852 | struct mesh_config cfg; | |
2853 | u32 mask; | |
2854 | int err; | |
2855 | ||
2856 | if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) | |
2857 | return -EOPNOTSUPP; | |
2858 | ||
2859 | if (!rdev->ops->update_mesh_params) | |
2860 | return -EOPNOTSUPP; | |
2861 | ||
2862 | err = nl80211_parse_mesh_params(info, &cfg, &mask); | |
2863 | if (err) | |
2864 | return err; | |
2865 | ||
2866 | wdev_lock(wdev); | |
2867 | if (!wdev->mesh_id_len) | |
2868 | err = -ENOLINK; | |
2869 | ||
2870 | if (!err) | |
2871 | err = rdev->ops->update_mesh_params(&rdev->wiphy, dev, | |
2872 | mask, &cfg); | |
2873 | ||
2874 | wdev_unlock(wdev); | |
2875 | ||
2876 | return err; | |
2877 | } | |
2878 | ||
2879 | static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) | |
2880 | { | |
2881 | struct sk_buff *msg; | |
2882 | void *hdr = NULL; | |
2883 | struct nlattr *nl_reg_rules; | |
2884 | unsigned int i; | |
2885 | int err = -EINVAL; | |
2886 | ||
2887 | mutex_lock(&cfg80211_mutex); | |
2888 | ||
2889 | if (!cfg80211_regdomain) | |
2890 | goto out; | |
2891 | ||
2892 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2893 | if (!msg) { | |
2894 | err = -ENOBUFS; | |
2895 | goto out; | |
2896 | } | |
2897 | ||
2898 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
2899 | NL80211_CMD_GET_REG); | |
2900 | if (!hdr) | |
2901 | goto nla_put_failure; | |
2902 | ||
2903 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, | |
2904 | cfg80211_regdomain->alpha2); | |
2905 | ||
2906 | nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); | |
2907 | if (!nl_reg_rules) | |
2908 | goto nla_put_failure; | |
2909 | ||
2910 | for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { | |
2911 | struct nlattr *nl_reg_rule; | |
2912 | const struct ieee80211_reg_rule *reg_rule; | |
2913 | const struct ieee80211_freq_range *freq_range; | |
2914 | const struct ieee80211_power_rule *power_rule; | |
2915 | ||
2916 | reg_rule = &cfg80211_regdomain->reg_rules[i]; | |
2917 | freq_range = ®_rule->freq_range; | |
2918 | power_rule = ®_rule->power_rule; | |
2919 | ||
2920 | nl_reg_rule = nla_nest_start(msg, i); | |
2921 | if (!nl_reg_rule) | |
2922 | goto nla_put_failure; | |
2923 | ||
2924 | NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, | |
2925 | reg_rule->flags); | |
2926 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, | |
2927 | freq_range->start_freq_khz); | |
2928 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, | |
2929 | freq_range->end_freq_khz); | |
2930 | NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, | |
2931 | freq_range->max_bandwidth_khz); | |
2932 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, | |
2933 | power_rule->max_antenna_gain); | |
2934 | NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, | |
2935 | power_rule->max_eirp); | |
2936 | ||
2937 | nla_nest_end(msg, nl_reg_rule); | |
2938 | } | |
2939 | ||
2940 | nla_nest_end(msg, nl_reg_rules); | |
2941 | ||
2942 | genlmsg_end(msg, hdr); | |
2943 | err = genlmsg_reply(msg, info); | |
2944 | goto out; | |
2945 | ||
2946 | nla_put_failure: | |
2947 | genlmsg_cancel(msg, hdr); | |
2948 | nlmsg_free(msg); | |
2949 | err = -EMSGSIZE; | |
2950 | out: | |
2951 | mutex_unlock(&cfg80211_mutex); | |
2952 | return err; | |
2953 | } | |
2954 | ||
2955 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) | |
2956 | { | |
2957 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; | |
2958 | struct nlattr *nl_reg_rule; | |
2959 | char *alpha2 = NULL; | |
2960 | int rem_reg_rules = 0, r = 0; | |
2961 | u32 num_rules = 0, rule_idx = 0, size_of_regd; | |
2962 | struct ieee80211_regdomain *rd = NULL; | |
2963 | ||
2964 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
2965 | return -EINVAL; | |
2966 | ||
2967 | if (!info->attrs[NL80211_ATTR_REG_RULES]) | |
2968 | return -EINVAL; | |
2969 | ||
2970 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
2971 | ||
2972 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
2973 | rem_reg_rules) { | |
2974 | num_rules++; | |
2975 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) | |
2976 | return -EINVAL; | |
2977 | } | |
2978 | ||
2979 | mutex_lock(&cfg80211_mutex); | |
2980 | ||
2981 | if (!reg_is_valid_request(alpha2)) { | |
2982 | r = -EINVAL; | |
2983 | goto bad_reg; | |
2984 | } | |
2985 | ||
2986 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
2987 | (num_rules * sizeof(struct ieee80211_reg_rule)); | |
2988 | ||
2989 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
2990 | if (!rd) { | |
2991 | r = -ENOMEM; | |
2992 | goto bad_reg; | |
2993 | } | |
2994 | ||
2995 | rd->n_reg_rules = num_rules; | |
2996 | rd->alpha2[0] = alpha2[0]; | |
2997 | rd->alpha2[1] = alpha2[1]; | |
2998 | ||
2999 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
3000 | rem_reg_rules) { | |
3001 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, | |
3002 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), | |
3003 | reg_rule_policy); | |
3004 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); | |
3005 | if (r) | |
3006 | goto bad_reg; | |
3007 | ||
3008 | rule_idx++; | |
3009 | ||
3010 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { | |
3011 | r = -EINVAL; | |
3012 | goto bad_reg; | |
3013 | } | |
3014 | } | |
3015 | ||
3016 | BUG_ON(rule_idx != num_rules); | |
3017 | ||
3018 | r = set_regdom(rd); | |
3019 | ||
3020 | mutex_unlock(&cfg80211_mutex); | |
3021 | ||
3022 | return r; | |
3023 | ||
3024 | bad_reg: | |
3025 | mutex_unlock(&cfg80211_mutex); | |
3026 | kfree(rd); | |
3027 | return r; | |
3028 | } | |
3029 | ||
3030 | static int validate_scan_freqs(struct nlattr *freqs) | |
3031 | { | |
3032 | struct nlattr *attr1, *attr2; | |
3033 | int n_channels = 0, tmp1, tmp2; | |
3034 | ||
3035 | nla_for_each_nested(attr1, freqs, tmp1) { | |
3036 | n_channels++; | |
3037 | /* | |
3038 | * Some hardware has a limited channel list for | |
3039 | * scanning, and it is pretty much nonsensical | |
3040 | * to scan for a channel twice, so disallow that | |
3041 | * and don't require drivers to check that the | |
3042 | * channel list they get isn't longer than what | |
3043 | * they can scan, as long as they can scan all | |
3044 | * the channels they registered at once. | |
3045 | */ | |
3046 | nla_for_each_nested(attr2, freqs, tmp2) | |
3047 | if (attr1 != attr2 && | |
3048 | nla_get_u32(attr1) == nla_get_u32(attr2)) | |
3049 | return 0; | |
3050 | } | |
3051 | ||
3052 | return n_channels; | |
3053 | } | |
3054 | ||
3055 | static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) | |
3056 | { | |
3057 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3058 | struct net_device *dev = info->user_ptr[1]; | |
3059 | struct cfg80211_scan_request *request; | |
3060 | struct cfg80211_ssid *ssid; | |
3061 | struct ieee80211_channel *channel; | |
3062 | struct nlattr *attr; | |
3063 | struct wiphy *wiphy; | |
3064 | int err, tmp, n_ssids = 0, n_channels, i; | |
3065 | enum ieee80211_band band; | |
3066 | size_t ie_len; | |
3067 | ||
3068 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3069 | return -EINVAL; | |
3070 | ||
3071 | wiphy = &rdev->wiphy; | |
3072 | ||
3073 | if (!rdev->ops->scan) | |
3074 | return -EOPNOTSUPP; | |
3075 | ||
3076 | if (rdev->scan_req) | |
3077 | return -EBUSY; | |
3078 | ||
3079 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
3080 | n_channels = validate_scan_freqs( | |
3081 | info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); | |
3082 | if (!n_channels) | |
3083 | return -EINVAL; | |
3084 | } else { | |
3085 | n_channels = 0; | |
3086 | ||
3087 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) | |
3088 | if (wiphy->bands[band]) | |
3089 | n_channels += wiphy->bands[band]->n_channels; | |
3090 | } | |
3091 | ||
3092 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) | |
3093 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) | |
3094 | n_ssids++; | |
3095 | ||
3096 | if (n_ssids > wiphy->max_scan_ssids) | |
3097 | return -EINVAL; | |
3098 | ||
3099 | if (info->attrs[NL80211_ATTR_IE]) | |
3100 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3101 | else | |
3102 | ie_len = 0; | |
3103 | ||
3104 | if (ie_len > wiphy->max_scan_ie_len) | |
3105 | return -EINVAL; | |
3106 | ||
3107 | request = kzalloc(sizeof(*request) | |
3108 | + sizeof(*ssid) * n_ssids | |
3109 | + sizeof(channel) * n_channels | |
3110 | + ie_len, GFP_KERNEL); | |
3111 | if (!request) | |
3112 | return -ENOMEM; | |
3113 | ||
3114 | if (n_ssids) | |
3115 | request->ssids = (void *)&request->channels[n_channels]; | |
3116 | request->n_ssids = n_ssids; | |
3117 | if (ie_len) { | |
3118 | if (request->ssids) | |
3119 | request->ie = (void *)(request->ssids + n_ssids); | |
3120 | else | |
3121 | request->ie = (void *)(request->channels + n_channels); | |
3122 | } | |
3123 | ||
3124 | i = 0; | |
3125 | if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { | |
3126 | /* user specified, bail out if channel not found */ | |
3127 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { | |
3128 | struct ieee80211_channel *chan; | |
3129 | ||
3130 | chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); | |
3131 | ||
3132 | if (!chan) { | |
3133 | err = -EINVAL; | |
3134 | goto out_free; | |
3135 | } | |
3136 | ||
3137 | /* ignore disabled channels */ | |
3138 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
3139 | continue; | |
3140 | ||
3141 | request->channels[i] = chan; | |
3142 | i++; | |
3143 | } | |
3144 | } else { | |
3145 | /* all channels */ | |
3146 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
3147 | int j; | |
3148 | if (!wiphy->bands[band]) | |
3149 | continue; | |
3150 | for (j = 0; j < wiphy->bands[band]->n_channels; j++) { | |
3151 | struct ieee80211_channel *chan; | |
3152 | ||
3153 | chan = &wiphy->bands[band]->channels[j]; | |
3154 | ||
3155 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
3156 | continue; | |
3157 | ||
3158 | request->channels[i] = chan; | |
3159 | i++; | |
3160 | } | |
3161 | } | |
3162 | } | |
3163 | ||
3164 | if (!i) { | |
3165 | err = -EINVAL; | |
3166 | goto out_free; | |
3167 | } | |
3168 | ||
3169 | request->n_channels = i; | |
3170 | ||
3171 | i = 0; | |
3172 | if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { | |
3173 | nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { | |
3174 | if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { | |
3175 | err = -EINVAL; | |
3176 | goto out_free; | |
3177 | } | |
3178 | memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); | |
3179 | request->ssids[i].ssid_len = nla_len(attr); | |
3180 | i++; | |
3181 | } | |
3182 | } | |
3183 | ||
3184 | if (info->attrs[NL80211_ATTR_IE]) { | |
3185 | request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3186 | memcpy((void *)request->ie, | |
3187 | nla_data(info->attrs[NL80211_ATTR_IE]), | |
3188 | request->ie_len); | |
3189 | } | |
3190 | ||
3191 | request->dev = dev; | |
3192 | request->wiphy = &rdev->wiphy; | |
3193 | ||
3194 | rdev->scan_req = request; | |
3195 | err = rdev->ops->scan(&rdev->wiphy, dev, request); | |
3196 | ||
3197 | if (!err) { | |
3198 | nl80211_send_scan_start(rdev, dev); | |
3199 | dev_hold(dev); | |
3200 | } else { | |
3201 | out_free: | |
3202 | rdev->scan_req = NULL; | |
3203 | kfree(request); | |
3204 | } | |
3205 | ||
3206 | return err; | |
3207 | } | |
3208 | ||
3209 | static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
3210 | struct cfg80211_registered_device *rdev, | |
3211 | struct wireless_dev *wdev, | |
3212 | struct cfg80211_internal_bss *intbss) | |
3213 | { | |
3214 | struct cfg80211_bss *res = &intbss->pub; | |
3215 | void *hdr; | |
3216 | struct nlattr *bss; | |
3217 | int i; | |
3218 | ||
3219 | ASSERT_WDEV_LOCK(wdev); | |
3220 | ||
3221 | hdr = nl80211hdr_put(msg, pid, seq, flags, | |
3222 | NL80211_CMD_NEW_SCAN_RESULTS); | |
3223 | if (!hdr) | |
3224 | return -1; | |
3225 | ||
3226 | NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation); | |
3227 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex); | |
3228 | ||
3229 | bss = nla_nest_start(msg, NL80211_ATTR_BSS); | |
3230 | if (!bss) | |
3231 | goto nla_put_failure; | |
3232 | if (!is_zero_ether_addr(res->bssid)) | |
3233 | NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); | |
3234 | if (res->information_elements && res->len_information_elements) | |
3235 | NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, | |
3236 | res->len_information_elements, | |
3237 | res->information_elements); | |
3238 | if (res->beacon_ies && res->len_beacon_ies && | |
3239 | res->beacon_ies != res->information_elements) | |
3240 | NLA_PUT(msg, NL80211_BSS_BEACON_IES, | |
3241 | res->len_beacon_ies, res->beacon_ies); | |
3242 | if (res->tsf) | |
3243 | NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); | |
3244 | if (res->beacon_interval) | |
3245 | NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); | |
3246 | NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); | |
3247 | NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); | |
3248 | NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO, | |
3249 | jiffies_to_msecs(jiffies - intbss->ts)); | |
3250 | ||
3251 | switch (rdev->wiphy.signal_type) { | |
3252 | case CFG80211_SIGNAL_TYPE_MBM: | |
3253 | NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); | |
3254 | break; | |
3255 | case CFG80211_SIGNAL_TYPE_UNSPEC: | |
3256 | NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); | |
3257 | break; | |
3258 | default: | |
3259 | break; | |
3260 | } | |
3261 | ||
3262 | switch (wdev->iftype) { | |
3263 | case NL80211_IFTYPE_P2P_CLIENT: | |
3264 | case NL80211_IFTYPE_STATION: | |
3265 | if (intbss == wdev->current_bss) | |
3266 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, | |
3267 | NL80211_BSS_STATUS_ASSOCIATED); | |
3268 | else for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
3269 | if (intbss != wdev->auth_bsses[i]) | |
3270 | continue; | |
3271 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, | |
3272 | NL80211_BSS_STATUS_AUTHENTICATED); | |
3273 | break; | |
3274 | } | |
3275 | break; | |
3276 | case NL80211_IFTYPE_ADHOC: | |
3277 | if (intbss == wdev->current_bss) | |
3278 | NLA_PUT_U32(msg, NL80211_BSS_STATUS, | |
3279 | NL80211_BSS_STATUS_IBSS_JOINED); | |
3280 | break; | |
3281 | default: | |
3282 | break; | |
3283 | } | |
3284 | ||
3285 | nla_nest_end(msg, bss); | |
3286 | ||
3287 | return genlmsg_end(msg, hdr); | |
3288 | ||
3289 | nla_put_failure: | |
3290 | genlmsg_cancel(msg, hdr); | |
3291 | return -EMSGSIZE; | |
3292 | } | |
3293 | ||
3294 | static int nl80211_dump_scan(struct sk_buff *skb, | |
3295 | struct netlink_callback *cb) | |
3296 | { | |
3297 | struct cfg80211_registered_device *rdev; | |
3298 | struct net_device *dev; | |
3299 | struct cfg80211_internal_bss *scan; | |
3300 | struct wireless_dev *wdev; | |
3301 | int start = cb->args[1], idx = 0; | |
3302 | int err; | |
3303 | ||
3304 | err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev); | |
3305 | if (err) | |
3306 | return err; | |
3307 | ||
3308 | wdev = dev->ieee80211_ptr; | |
3309 | ||
3310 | wdev_lock(wdev); | |
3311 | spin_lock_bh(&rdev->bss_lock); | |
3312 | cfg80211_bss_expire(rdev); | |
3313 | ||
3314 | list_for_each_entry(scan, &rdev->bss_list, list) { | |
3315 | if (++idx <= start) | |
3316 | continue; | |
3317 | if (nl80211_send_bss(skb, | |
3318 | NETLINK_CB(cb->skb).pid, | |
3319 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
3320 | rdev, wdev, scan) < 0) { | |
3321 | idx--; | |
3322 | break; | |
3323 | } | |
3324 | } | |
3325 | ||
3326 | spin_unlock_bh(&rdev->bss_lock); | |
3327 | wdev_unlock(wdev); | |
3328 | ||
3329 | cb->args[1] = idx; | |
3330 | nl80211_finish_netdev_dump(rdev); | |
3331 | ||
3332 | return skb->len; | |
3333 | } | |
3334 | ||
3335 | static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, | |
3336 | int flags, struct net_device *dev, | |
3337 | struct survey_info *survey) | |
3338 | { | |
3339 | void *hdr; | |
3340 | struct nlattr *infoattr; | |
3341 | ||
3342 | /* Survey without a channel doesn't make sense */ | |
3343 | if (!survey->channel) | |
3344 | return -EINVAL; | |
3345 | ||
3346 | hdr = nl80211hdr_put(msg, pid, seq, flags, | |
3347 | NL80211_CMD_NEW_SURVEY_RESULTS); | |
3348 | if (!hdr) | |
3349 | return -ENOMEM; | |
3350 | ||
3351 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
3352 | ||
3353 | infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); | |
3354 | if (!infoattr) | |
3355 | goto nla_put_failure; | |
3356 | ||
3357 | NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY, | |
3358 | survey->channel->center_freq); | |
3359 | if (survey->filled & SURVEY_INFO_NOISE_DBM) | |
3360 | NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE, | |
3361 | survey->noise); | |
3362 | if (survey->filled & SURVEY_INFO_IN_USE) | |
3363 | NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE); | |
3364 | if (survey->filled & SURVEY_INFO_CHANNEL_TIME) | |
3365 | NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, | |
3366 | survey->channel_time); | |
3367 | if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) | |
3368 | NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, | |
3369 | survey->channel_time_busy); | |
3370 | if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) | |
3371 | NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, | |
3372 | survey->channel_time_ext_busy); | |
3373 | if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) | |
3374 | NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, | |
3375 | survey->channel_time_rx); | |
3376 | if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) | |
3377 | NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, | |
3378 | survey->channel_time_tx); | |
3379 | ||
3380 | nla_nest_end(msg, infoattr); | |
3381 | ||
3382 | return genlmsg_end(msg, hdr); | |
3383 | ||
3384 | nla_put_failure: | |
3385 | genlmsg_cancel(msg, hdr); | |
3386 | return -EMSGSIZE; | |
3387 | } | |
3388 | ||
3389 | static int nl80211_dump_survey(struct sk_buff *skb, | |
3390 | struct netlink_callback *cb) | |
3391 | { | |
3392 | struct survey_info survey; | |
3393 | struct cfg80211_registered_device *dev; | |
3394 | struct net_device *netdev; | |
3395 | int survey_idx = cb->args[1]; | |
3396 | int res; | |
3397 | ||
3398 | res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); | |
3399 | if (res) | |
3400 | return res; | |
3401 | ||
3402 | if (!dev->ops->dump_survey) { | |
3403 | res = -EOPNOTSUPP; | |
3404 | goto out_err; | |
3405 | } | |
3406 | ||
3407 | while (1) { | |
3408 | res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx, | |
3409 | &survey); | |
3410 | if (res == -ENOENT) | |
3411 | break; | |
3412 | if (res) | |
3413 | goto out_err; | |
3414 | ||
3415 | if (nl80211_send_survey(skb, | |
3416 | NETLINK_CB(cb->skb).pid, | |
3417 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
3418 | netdev, | |
3419 | &survey) < 0) | |
3420 | goto out; | |
3421 | survey_idx++; | |
3422 | } | |
3423 | ||
3424 | out: | |
3425 | cb->args[1] = survey_idx; | |
3426 | res = skb->len; | |
3427 | out_err: | |
3428 | nl80211_finish_netdev_dump(dev); | |
3429 | return res; | |
3430 | } | |
3431 | ||
3432 | static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type) | |
3433 | { | |
3434 | return auth_type <= NL80211_AUTHTYPE_MAX; | |
3435 | } | |
3436 | ||
3437 | static bool nl80211_valid_wpa_versions(u32 wpa_versions) | |
3438 | { | |
3439 | return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | | |
3440 | NL80211_WPA_VERSION_2)); | |
3441 | } | |
3442 | ||
3443 | static bool nl80211_valid_akm_suite(u32 akm) | |
3444 | { | |
3445 | return akm == WLAN_AKM_SUITE_8021X || | |
3446 | akm == WLAN_AKM_SUITE_PSK; | |
3447 | } | |
3448 | ||
3449 | static bool nl80211_valid_cipher_suite(u32 cipher) | |
3450 | { | |
3451 | return cipher == WLAN_CIPHER_SUITE_WEP40 || | |
3452 | cipher == WLAN_CIPHER_SUITE_WEP104 || | |
3453 | cipher == WLAN_CIPHER_SUITE_TKIP || | |
3454 | cipher == WLAN_CIPHER_SUITE_CCMP || | |
3455 | cipher == WLAN_CIPHER_SUITE_AES_CMAC; | |
3456 | } | |
3457 | ||
3458 | ||
3459 | static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) | |
3460 | { | |
3461 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3462 | struct net_device *dev = info->user_ptr[1]; | |
3463 | struct ieee80211_channel *chan; | |
3464 | const u8 *bssid, *ssid, *ie = NULL; | |
3465 | int err, ssid_len, ie_len = 0; | |
3466 | enum nl80211_auth_type auth_type; | |
3467 | struct key_parse key; | |
3468 | bool local_state_change; | |
3469 | ||
3470 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3471 | return -EINVAL; | |
3472 | ||
3473 | if (!info->attrs[NL80211_ATTR_MAC]) | |
3474 | return -EINVAL; | |
3475 | ||
3476 | if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) | |
3477 | return -EINVAL; | |
3478 | ||
3479 | if (!info->attrs[NL80211_ATTR_SSID]) | |
3480 | return -EINVAL; | |
3481 | ||
3482 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) | |
3483 | return -EINVAL; | |
3484 | ||
3485 | err = nl80211_parse_key(info, &key); | |
3486 | if (err) | |
3487 | return err; | |
3488 | ||
3489 | if (key.idx >= 0) { | |
3490 | if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) | |
3491 | return -EINVAL; | |
3492 | if (!key.p.key || !key.p.key_len) | |
3493 | return -EINVAL; | |
3494 | if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || | |
3495 | key.p.key_len != WLAN_KEY_LEN_WEP40) && | |
3496 | (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || | |
3497 | key.p.key_len != WLAN_KEY_LEN_WEP104)) | |
3498 | return -EINVAL; | |
3499 | if (key.idx > 4) | |
3500 | return -EINVAL; | |
3501 | } else { | |
3502 | key.p.key_len = 0; | |
3503 | key.p.key = NULL; | |
3504 | } | |
3505 | ||
3506 | if (key.idx >= 0) { | |
3507 | int i; | |
3508 | bool ok = false; | |
3509 | for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { | |
3510 | if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { | |
3511 | ok = true; | |
3512 | break; | |
3513 | } | |
3514 | } | |
3515 | if (!ok) | |
3516 | return -EINVAL; | |
3517 | } | |
3518 | ||
3519 | if (!rdev->ops->auth) | |
3520 | return -EOPNOTSUPP; | |
3521 | ||
3522 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
3523 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
3524 | return -EOPNOTSUPP; | |
3525 | ||
3526 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
3527 | chan = ieee80211_get_channel(&rdev->wiphy, | |
3528 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); | |
3529 | if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) | |
3530 | return -EINVAL; | |
3531 | ||
3532 | ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); | |
3533 | ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); | |
3534 | ||
3535 | if (info->attrs[NL80211_ATTR_IE]) { | |
3536 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
3537 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3538 | } | |
3539 | ||
3540 | auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); | |
3541 | if (!nl80211_valid_auth_type(auth_type)) | |
3542 | return -EINVAL; | |
3543 | ||
3544 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; | |
3545 | ||
3546 | return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, | |
3547 | ssid, ssid_len, ie, ie_len, | |
3548 | key.p.key, key.p.key_len, key.idx, | |
3549 | local_state_change); | |
3550 | } | |
3551 | ||
3552 | static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, | |
3553 | struct genl_info *info, | |
3554 | struct cfg80211_crypto_settings *settings, | |
3555 | int cipher_limit) | |
3556 | { | |
3557 | memset(settings, 0, sizeof(*settings)); | |
3558 | ||
3559 | settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; | |
3560 | ||
3561 | if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { | |
3562 | u16 proto; | |
3563 | proto = nla_get_u16( | |
3564 | info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); | |
3565 | settings->control_port_ethertype = cpu_to_be16(proto); | |
3566 | if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && | |
3567 | proto != ETH_P_PAE) | |
3568 | return -EINVAL; | |
3569 | if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) | |
3570 | settings->control_port_no_encrypt = true; | |
3571 | } else | |
3572 | settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); | |
3573 | ||
3574 | if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { | |
3575 | void *data; | |
3576 | int len, i; | |
3577 | ||
3578 | data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); | |
3579 | len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); | |
3580 | settings->n_ciphers_pairwise = len / sizeof(u32); | |
3581 | ||
3582 | if (len % sizeof(u32)) | |
3583 | return -EINVAL; | |
3584 | ||
3585 | if (settings->n_ciphers_pairwise > cipher_limit) | |
3586 | return -EINVAL; | |
3587 | ||
3588 | memcpy(settings->ciphers_pairwise, data, len); | |
3589 | ||
3590 | for (i = 0; i < settings->n_ciphers_pairwise; i++) | |
3591 | if (!nl80211_valid_cipher_suite( | |
3592 | settings->ciphers_pairwise[i])) | |
3593 | return -EINVAL; | |
3594 | } | |
3595 | ||
3596 | if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { | |
3597 | settings->cipher_group = | |
3598 | nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); | |
3599 | if (!nl80211_valid_cipher_suite(settings->cipher_group)) | |
3600 | return -EINVAL; | |
3601 | } | |
3602 | ||
3603 | if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { | |
3604 | settings->wpa_versions = | |
3605 | nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); | |
3606 | if (!nl80211_valid_wpa_versions(settings->wpa_versions)) | |
3607 | return -EINVAL; | |
3608 | } | |
3609 | ||
3610 | if (info->attrs[NL80211_ATTR_AKM_SUITES]) { | |
3611 | void *data; | |
3612 | int len, i; | |
3613 | ||
3614 | data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); | |
3615 | len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); | |
3616 | settings->n_akm_suites = len / sizeof(u32); | |
3617 | ||
3618 | if (len % sizeof(u32)) | |
3619 | return -EINVAL; | |
3620 | ||
3621 | memcpy(settings->akm_suites, data, len); | |
3622 | ||
3623 | for (i = 0; i < settings->n_ciphers_pairwise; i++) | |
3624 | if (!nl80211_valid_akm_suite(settings->akm_suites[i])) | |
3625 | return -EINVAL; | |
3626 | } | |
3627 | ||
3628 | return 0; | |
3629 | } | |
3630 | ||
3631 | static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) | |
3632 | { | |
3633 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3634 | struct net_device *dev = info->user_ptr[1]; | |
3635 | struct cfg80211_crypto_settings crypto; | |
3636 | struct ieee80211_channel *chan; | |
3637 | const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL; | |
3638 | int err, ssid_len, ie_len = 0; | |
3639 | bool use_mfp = false; | |
3640 | ||
3641 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3642 | return -EINVAL; | |
3643 | ||
3644 | if (!info->attrs[NL80211_ATTR_MAC] || | |
3645 | !info->attrs[NL80211_ATTR_SSID] || | |
3646 | !info->attrs[NL80211_ATTR_WIPHY_FREQ]) | |
3647 | return -EINVAL; | |
3648 | ||
3649 | if (!rdev->ops->assoc) | |
3650 | return -EOPNOTSUPP; | |
3651 | ||
3652 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
3653 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
3654 | return -EOPNOTSUPP; | |
3655 | ||
3656 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
3657 | ||
3658 | chan = ieee80211_get_channel(&rdev->wiphy, | |
3659 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); | |
3660 | if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) | |
3661 | return -EINVAL; | |
3662 | ||
3663 | ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); | |
3664 | ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); | |
3665 | ||
3666 | if (info->attrs[NL80211_ATTR_IE]) { | |
3667 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
3668 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3669 | } | |
3670 | ||
3671 | if (info->attrs[NL80211_ATTR_USE_MFP]) { | |
3672 | enum nl80211_mfp mfp = | |
3673 | nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); | |
3674 | if (mfp == NL80211_MFP_REQUIRED) | |
3675 | use_mfp = true; | |
3676 | else if (mfp != NL80211_MFP_NO) | |
3677 | return -EINVAL; | |
3678 | } | |
3679 | ||
3680 | if (info->attrs[NL80211_ATTR_PREV_BSSID]) | |
3681 | prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); | |
3682 | ||
3683 | err = nl80211_crypto_settings(rdev, info, &crypto, 1); | |
3684 | if (!err) | |
3685 | err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, | |
3686 | ssid, ssid_len, ie, ie_len, use_mfp, | |
3687 | &crypto); | |
3688 | ||
3689 | return err; | |
3690 | } | |
3691 | ||
3692 | static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) | |
3693 | { | |
3694 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3695 | struct net_device *dev = info->user_ptr[1]; | |
3696 | const u8 *ie = NULL, *bssid; | |
3697 | int ie_len = 0; | |
3698 | u16 reason_code; | |
3699 | bool local_state_change; | |
3700 | ||
3701 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3702 | return -EINVAL; | |
3703 | ||
3704 | if (!info->attrs[NL80211_ATTR_MAC]) | |
3705 | return -EINVAL; | |
3706 | ||
3707 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) | |
3708 | return -EINVAL; | |
3709 | ||
3710 | if (!rdev->ops->deauth) | |
3711 | return -EOPNOTSUPP; | |
3712 | ||
3713 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
3714 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
3715 | return -EOPNOTSUPP; | |
3716 | ||
3717 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
3718 | ||
3719 | reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); | |
3720 | if (reason_code == 0) { | |
3721 | /* Reason Code 0 is reserved */ | |
3722 | return -EINVAL; | |
3723 | } | |
3724 | ||
3725 | if (info->attrs[NL80211_ATTR_IE]) { | |
3726 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
3727 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3728 | } | |
3729 | ||
3730 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; | |
3731 | ||
3732 | return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, | |
3733 | local_state_change); | |
3734 | } | |
3735 | ||
3736 | static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) | |
3737 | { | |
3738 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3739 | struct net_device *dev = info->user_ptr[1]; | |
3740 | const u8 *ie = NULL, *bssid; | |
3741 | int ie_len = 0; | |
3742 | u16 reason_code; | |
3743 | bool local_state_change; | |
3744 | ||
3745 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3746 | return -EINVAL; | |
3747 | ||
3748 | if (!info->attrs[NL80211_ATTR_MAC]) | |
3749 | return -EINVAL; | |
3750 | ||
3751 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) | |
3752 | return -EINVAL; | |
3753 | ||
3754 | if (!rdev->ops->disassoc) | |
3755 | return -EOPNOTSUPP; | |
3756 | ||
3757 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
3758 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
3759 | return -EOPNOTSUPP; | |
3760 | ||
3761 | bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
3762 | ||
3763 | reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); | |
3764 | if (reason_code == 0) { | |
3765 | /* Reason Code 0 is reserved */ | |
3766 | return -EINVAL; | |
3767 | } | |
3768 | ||
3769 | if (info->attrs[NL80211_ATTR_IE]) { | |
3770 | ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
3771 | ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3772 | } | |
3773 | ||
3774 | local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; | |
3775 | ||
3776 | return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, | |
3777 | local_state_change); | |
3778 | } | |
3779 | ||
3780 | static bool | |
3781 | nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, | |
3782 | int mcast_rate[IEEE80211_NUM_BANDS], | |
3783 | int rateval) | |
3784 | { | |
3785 | struct wiphy *wiphy = &rdev->wiphy; | |
3786 | bool found = false; | |
3787 | int band, i; | |
3788 | ||
3789 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
3790 | struct ieee80211_supported_band *sband; | |
3791 | ||
3792 | sband = wiphy->bands[band]; | |
3793 | if (!sband) | |
3794 | continue; | |
3795 | ||
3796 | for (i = 0; i < sband->n_bitrates; i++) { | |
3797 | if (sband->bitrates[i].bitrate == rateval) { | |
3798 | mcast_rate[band] = i + 1; | |
3799 | found = true; | |
3800 | break; | |
3801 | } | |
3802 | } | |
3803 | } | |
3804 | ||
3805 | return found; | |
3806 | } | |
3807 | ||
3808 | static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) | |
3809 | { | |
3810 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3811 | struct net_device *dev = info->user_ptr[1]; | |
3812 | struct cfg80211_ibss_params ibss; | |
3813 | struct wiphy *wiphy; | |
3814 | struct cfg80211_cached_keys *connkeys = NULL; | |
3815 | int err; | |
3816 | ||
3817 | memset(&ibss, 0, sizeof(ibss)); | |
3818 | ||
3819 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
3820 | return -EINVAL; | |
3821 | ||
3822 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || | |
3823 | !info->attrs[NL80211_ATTR_SSID] || | |
3824 | !nla_len(info->attrs[NL80211_ATTR_SSID])) | |
3825 | return -EINVAL; | |
3826 | ||
3827 | ibss.beacon_interval = 100; | |
3828 | ||
3829 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
3830 | ibss.beacon_interval = | |
3831 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
3832 | if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) | |
3833 | return -EINVAL; | |
3834 | } | |
3835 | ||
3836 | if (!rdev->ops->join_ibss) | |
3837 | return -EOPNOTSUPP; | |
3838 | ||
3839 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) | |
3840 | return -EOPNOTSUPP; | |
3841 | ||
3842 | wiphy = &rdev->wiphy; | |
3843 | ||
3844 | if (info->attrs[NL80211_ATTR_MAC]) | |
3845 | ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
3846 | ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); | |
3847 | ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); | |
3848 | ||
3849 | if (info->attrs[NL80211_ATTR_IE]) { | |
3850 | ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
3851 | ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
3852 | } | |
3853 | ||
3854 | ibss.channel = ieee80211_get_channel(wiphy, | |
3855 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); | |
3856 | if (!ibss.channel || | |
3857 | ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || | |
3858 | ibss.channel->flags & IEEE80211_CHAN_DISABLED) | |
3859 | return -EINVAL; | |
3860 | ||
3861 | ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; | |
3862 | ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; | |
3863 | ||
3864 | if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { | |
3865 | u8 *rates = | |
3866 | nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
3867 | int n_rates = | |
3868 | nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); | |
3869 | struct ieee80211_supported_band *sband = | |
3870 | wiphy->bands[ibss.channel->band]; | |
3871 | int i, j; | |
3872 | ||
3873 | if (n_rates == 0) | |
3874 | return -EINVAL; | |
3875 | ||
3876 | for (i = 0; i < n_rates; i++) { | |
3877 | int rate = (rates[i] & 0x7f) * 5; | |
3878 | bool found = false; | |
3879 | ||
3880 | for (j = 0; j < sband->n_bitrates; j++) { | |
3881 | if (sband->bitrates[j].bitrate == rate) { | |
3882 | found = true; | |
3883 | ibss.basic_rates |= BIT(j); | |
3884 | break; | |
3885 | } | |
3886 | } | |
3887 | if (!found) | |
3888 | return -EINVAL; | |
3889 | } | |
3890 | } | |
3891 | ||
3892 | if (info->attrs[NL80211_ATTR_MCAST_RATE] && | |
3893 | !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, | |
3894 | nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) | |
3895 | return -EINVAL; | |
3896 | ||
3897 | if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { | |
3898 | connkeys = nl80211_parse_connkeys(rdev, | |
3899 | info->attrs[NL80211_ATTR_KEYS]); | |
3900 | if (IS_ERR(connkeys)) | |
3901 | return PTR_ERR(connkeys); | |
3902 | } | |
3903 | ||
3904 | err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); | |
3905 | if (err) | |
3906 | kfree(connkeys); | |
3907 | return err; | |
3908 | } | |
3909 | ||
3910 | static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) | |
3911 | { | |
3912 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3913 | struct net_device *dev = info->user_ptr[1]; | |
3914 | ||
3915 | if (!rdev->ops->leave_ibss) | |
3916 | return -EOPNOTSUPP; | |
3917 | ||
3918 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) | |
3919 | return -EOPNOTSUPP; | |
3920 | ||
3921 | return cfg80211_leave_ibss(rdev, dev, false); | |
3922 | } | |
3923 | ||
3924 | #ifdef CONFIG_NL80211_TESTMODE | |
3925 | static struct genl_multicast_group nl80211_testmode_mcgrp = { | |
3926 | .name = "testmode", | |
3927 | }; | |
3928 | ||
3929 | static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) | |
3930 | { | |
3931 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
3932 | int err; | |
3933 | ||
3934 | if (!info->attrs[NL80211_ATTR_TESTDATA]) | |
3935 | return -EINVAL; | |
3936 | ||
3937 | err = -EOPNOTSUPP; | |
3938 | if (rdev->ops->testmode_cmd) { | |
3939 | rdev->testmode_info = info; | |
3940 | err = rdev->ops->testmode_cmd(&rdev->wiphy, | |
3941 | nla_data(info->attrs[NL80211_ATTR_TESTDATA]), | |
3942 | nla_len(info->attrs[NL80211_ATTR_TESTDATA])); | |
3943 | rdev->testmode_info = NULL; | |
3944 | } | |
3945 | ||
3946 | return err; | |
3947 | } | |
3948 | ||
3949 | static struct sk_buff * | |
3950 | __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, | |
3951 | int approxlen, u32 pid, u32 seq, gfp_t gfp) | |
3952 | { | |
3953 | struct sk_buff *skb; | |
3954 | void *hdr; | |
3955 | struct nlattr *data; | |
3956 | ||
3957 | skb = nlmsg_new(approxlen + 100, gfp); | |
3958 | if (!skb) | |
3959 | return NULL; | |
3960 | ||
3961 | hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE); | |
3962 | if (!hdr) { | |
3963 | kfree_skb(skb); | |
3964 | return NULL; | |
3965 | } | |
3966 | ||
3967 | NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
3968 | data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); | |
3969 | ||
3970 | ((void **)skb->cb)[0] = rdev; | |
3971 | ((void **)skb->cb)[1] = hdr; | |
3972 | ((void **)skb->cb)[2] = data; | |
3973 | ||
3974 | return skb; | |
3975 | ||
3976 | nla_put_failure: | |
3977 | kfree_skb(skb); | |
3978 | return NULL; | |
3979 | } | |
3980 | ||
3981 | struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, | |
3982 | int approxlen) | |
3983 | { | |
3984 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
3985 | ||
3986 | if (WARN_ON(!rdev->testmode_info)) | |
3987 | return NULL; | |
3988 | ||
3989 | return __cfg80211_testmode_alloc_skb(rdev, approxlen, | |
3990 | rdev->testmode_info->snd_pid, | |
3991 | rdev->testmode_info->snd_seq, | |
3992 | GFP_KERNEL); | |
3993 | } | |
3994 | EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); | |
3995 | ||
3996 | int cfg80211_testmode_reply(struct sk_buff *skb) | |
3997 | { | |
3998 | struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; | |
3999 | void *hdr = ((void **)skb->cb)[1]; | |
4000 | struct nlattr *data = ((void **)skb->cb)[2]; | |
4001 | ||
4002 | if (WARN_ON(!rdev->testmode_info)) { | |
4003 | kfree_skb(skb); | |
4004 | return -EINVAL; | |
4005 | } | |
4006 | ||
4007 | nla_nest_end(skb, data); | |
4008 | genlmsg_end(skb, hdr); | |
4009 | return genlmsg_reply(skb, rdev->testmode_info); | |
4010 | } | |
4011 | EXPORT_SYMBOL(cfg80211_testmode_reply); | |
4012 | ||
4013 | struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, | |
4014 | int approxlen, gfp_t gfp) | |
4015 | { | |
4016 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
4017 | ||
4018 | return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); | |
4019 | } | |
4020 | EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); | |
4021 | ||
4022 | void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) | |
4023 | { | |
4024 | void *hdr = ((void **)skb->cb)[1]; | |
4025 | struct nlattr *data = ((void **)skb->cb)[2]; | |
4026 | ||
4027 | nla_nest_end(skb, data); | |
4028 | genlmsg_end(skb, hdr); | |
4029 | genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); | |
4030 | } | |
4031 | EXPORT_SYMBOL(cfg80211_testmode_event); | |
4032 | #endif | |
4033 | ||
4034 | static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) | |
4035 | { | |
4036 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4037 | struct net_device *dev = info->user_ptr[1]; | |
4038 | struct cfg80211_connect_params connect; | |
4039 | struct wiphy *wiphy; | |
4040 | struct cfg80211_cached_keys *connkeys = NULL; | |
4041 | int err; | |
4042 | ||
4043 | memset(&connect, 0, sizeof(connect)); | |
4044 | ||
4045 | if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) | |
4046 | return -EINVAL; | |
4047 | ||
4048 | if (!info->attrs[NL80211_ATTR_SSID] || | |
4049 | !nla_len(info->attrs[NL80211_ATTR_SSID])) | |
4050 | return -EINVAL; | |
4051 | ||
4052 | if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { | |
4053 | connect.auth_type = | |
4054 | nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); | |
4055 | if (!nl80211_valid_auth_type(connect.auth_type)) | |
4056 | return -EINVAL; | |
4057 | } else | |
4058 | connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
4059 | ||
4060 | connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; | |
4061 | ||
4062 | err = nl80211_crypto_settings(rdev, info, &connect.crypto, | |
4063 | NL80211_MAX_NR_CIPHER_SUITES); | |
4064 | if (err) | |
4065 | return err; | |
4066 | ||
4067 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4068 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
4069 | return -EOPNOTSUPP; | |
4070 | ||
4071 | wiphy = &rdev->wiphy; | |
4072 | ||
4073 | if (info->attrs[NL80211_ATTR_MAC]) | |
4074 | connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
4075 | connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); | |
4076 | connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); | |
4077 | ||
4078 | if (info->attrs[NL80211_ATTR_IE]) { | |
4079 | connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); | |
4080 | connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); | |
4081 | } | |
4082 | ||
4083 | if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { | |
4084 | connect.channel = | |
4085 | ieee80211_get_channel(wiphy, | |
4086 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); | |
4087 | if (!connect.channel || | |
4088 | connect.channel->flags & IEEE80211_CHAN_DISABLED) | |
4089 | return -EINVAL; | |
4090 | } | |
4091 | ||
4092 | if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { | |
4093 | connkeys = nl80211_parse_connkeys(rdev, | |
4094 | info->attrs[NL80211_ATTR_KEYS]); | |
4095 | if (IS_ERR(connkeys)) | |
4096 | return PTR_ERR(connkeys); | |
4097 | } | |
4098 | ||
4099 | err = cfg80211_connect(rdev, dev, &connect, connkeys); | |
4100 | if (err) | |
4101 | kfree(connkeys); | |
4102 | return err; | |
4103 | } | |
4104 | ||
4105 | static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) | |
4106 | { | |
4107 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4108 | struct net_device *dev = info->user_ptr[1]; | |
4109 | u16 reason; | |
4110 | ||
4111 | if (!info->attrs[NL80211_ATTR_REASON_CODE]) | |
4112 | reason = WLAN_REASON_DEAUTH_LEAVING; | |
4113 | else | |
4114 | reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); | |
4115 | ||
4116 | if (reason == 0) | |
4117 | return -EINVAL; | |
4118 | ||
4119 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4120 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
4121 | return -EOPNOTSUPP; | |
4122 | ||
4123 | return cfg80211_disconnect(rdev, dev, reason, true); | |
4124 | } | |
4125 | ||
4126 | static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) | |
4127 | { | |
4128 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4129 | struct net *net; | |
4130 | int err; | |
4131 | u32 pid; | |
4132 | ||
4133 | if (!info->attrs[NL80211_ATTR_PID]) | |
4134 | return -EINVAL; | |
4135 | ||
4136 | pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); | |
4137 | ||
4138 | net = get_net_ns_by_pid(pid); | |
4139 | if (IS_ERR(net)) | |
4140 | return PTR_ERR(net); | |
4141 | ||
4142 | err = 0; | |
4143 | ||
4144 | /* check if anything to do */ | |
4145 | if (!net_eq(wiphy_net(&rdev->wiphy), net)) | |
4146 | err = cfg80211_switch_netns(rdev, net); | |
4147 | ||
4148 | put_net(net); | |
4149 | return err; | |
4150 | } | |
4151 | ||
4152 | static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) | |
4153 | { | |
4154 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4155 | int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, | |
4156 | struct cfg80211_pmksa *pmksa) = NULL; | |
4157 | struct net_device *dev = info->user_ptr[1]; | |
4158 | struct cfg80211_pmksa pmksa; | |
4159 | ||
4160 | memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); | |
4161 | ||
4162 | if (!info->attrs[NL80211_ATTR_MAC]) | |
4163 | return -EINVAL; | |
4164 | ||
4165 | if (!info->attrs[NL80211_ATTR_PMKID]) | |
4166 | return -EINVAL; | |
4167 | ||
4168 | pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); | |
4169 | pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
4170 | ||
4171 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4172 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
4173 | return -EOPNOTSUPP; | |
4174 | ||
4175 | switch (info->genlhdr->cmd) { | |
4176 | case NL80211_CMD_SET_PMKSA: | |
4177 | rdev_ops = rdev->ops->set_pmksa; | |
4178 | break; | |
4179 | case NL80211_CMD_DEL_PMKSA: | |
4180 | rdev_ops = rdev->ops->del_pmksa; | |
4181 | break; | |
4182 | default: | |
4183 | WARN_ON(1); | |
4184 | break; | |
4185 | } | |
4186 | ||
4187 | if (!rdev_ops) | |
4188 | return -EOPNOTSUPP; | |
4189 | ||
4190 | return rdev_ops(&rdev->wiphy, dev, &pmksa); | |
4191 | } | |
4192 | ||
4193 | static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) | |
4194 | { | |
4195 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4196 | struct net_device *dev = info->user_ptr[1]; | |
4197 | ||
4198 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4199 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
4200 | return -EOPNOTSUPP; | |
4201 | ||
4202 | if (!rdev->ops->flush_pmksa) | |
4203 | return -EOPNOTSUPP; | |
4204 | ||
4205 | return rdev->ops->flush_pmksa(&rdev->wiphy, dev); | |
4206 | } | |
4207 | ||
4208 | static int nl80211_remain_on_channel(struct sk_buff *skb, | |
4209 | struct genl_info *info) | |
4210 | { | |
4211 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4212 | struct net_device *dev = info->user_ptr[1]; | |
4213 | struct ieee80211_channel *chan; | |
4214 | struct sk_buff *msg; | |
4215 | void *hdr; | |
4216 | u64 cookie; | |
4217 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
4218 | u32 freq, duration; | |
4219 | int err; | |
4220 | ||
4221 | if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || | |
4222 | !info->attrs[NL80211_ATTR_DURATION]) | |
4223 | return -EINVAL; | |
4224 | ||
4225 | duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); | |
4226 | ||
4227 | /* | |
4228 | * We should be on that channel for at least one jiffie, | |
4229 | * and more than 5 seconds seems excessive. | |
4230 | */ | |
4231 | if (!duration || !msecs_to_jiffies(duration) || duration > 5000) | |
4232 | return -EINVAL; | |
4233 | ||
4234 | if (!rdev->ops->remain_on_channel) | |
4235 | return -EOPNOTSUPP; | |
4236 | ||
4237 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { | |
4238 | channel_type = nla_get_u32( | |
4239 | info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); | |
4240 | if (channel_type != NL80211_CHAN_NO_HT && | |
4241 | channel_type != NL80211_CHAN_HT20 && | |
4242 | channel_type != NL80211_CHAN_HT40PLUS && | |
4243 | channel_type != NL80211_CHAN_HT40MINUS) | |
4244 | return -EINVAL; | |
4245 | } | |
4246 | ||
4247 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); | |
4248 | chan = rdev_freq_to_chan(rdev, freq, channel_type); | |
4249 | if (chan == NULL) | |
4250 | return -EINVAL; | |
4251 | ||
4252 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4253 | if (!msg) | |
4254 | return -ENOMEM; | |
4255 | ||
4256 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
4257 | NL80211_CMD_REMAIN_ON_CHANNEL); | |
4258 | ||
4259 | if (IS_ERR(hdr)) { | |
4260 | err = PTR_ERR(hdr); | |
4261 | goto free_msg; | |
4262 | } | |
4263 | ||
4264 | err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan, | |
4265 | channel_type, duration, &cookie); | |
4266 | ||
4267 | if (err) | |
4268 | goto free_msg; | |
4269 | ||
4270 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); | |
4271 | ||
4272 | genlmsg_end(msg, hdr); | |
4273 | ||
4274 | return genlmsg_reply(msg, info); | |
4275 | ||
4276 | nla_put_failure: | |
4277 | err = -ENOBUFS; | |
4278 | free_msg: | |
4279 | nlmsg_free(msg); | |
4280 | return err; | |
4281 | } | |
4282 | ||
4283 | static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, | |
4284 | struct genl_info *info) | |
4285 | { | |
4286 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4287 | struct net_device *dev = info->user_ptr[1]; | |
4288 | u64 cookie; | |
4289 | ||
4290 | if (!info->attrs[NL80211_ATTR_COOKIE]) | |
4291 | return -EINVAL; | |
4292 | ||
4293 | if (!rdev->ops->cancel_remain_on_channel) | |
4294 | return -EOPNOTSUPP; | |
4295 | ||
4296 | cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); | |
4297 | ||
4298 | return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); | |
4299 | } | |
4300 | ||
4301 | static u32 rateset_to_mask(struct ieee80211_supported_band *sband, | |
4302 | u8 *rates, u8 rates_len) | |
4303 | { | |
4304 | u8 i; | |
4305 | u32 mask = 0; | |
4306 | ||
4307 | for (i = 0; i < rates_len; i++) { | |
4308 | int rate = (rates[i] & 0x7f) * 5; | |
4309 | int ridx; | |
4310 | for (ridx = 0; ridx < sband->n_bitrates; ridx++) { | |
4311 | struct ieee80211_rate *srate = | |
4312 | &sband->bitrates[ridx]; | |
4313 | if (rate == srate->bitrate) { | |
4314 | mask |= 1 << ridx; | |
4315 | break; | |
4316 | } | |
4317 | } | |
4318 | if (ridx == sband->n_bitrates) | |
4319 | return 0; /* rate not found */ | |
4320 | } | |
4321 | ||
4322 | return mask; | |
4323 | } | |
4324 | ||
4325 | static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { | |
4326 | [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, | |
4327 | .len = NL80211_MAX_SUPP_RATES }, | |
4328 | }; | |
4329 | ||
4330 | static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, | |
4331 | struct genl_info *info) | |
4332 | { | |
4333 | struct nlattr *tb[NL80211_TXRATE_MAX + 1]; | |
4334 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4335 | struct cfg80211_bitrate_mask mask; | |
4336 | int rem, i; | |
4337 | struct net_device *dev = info->user_ptr[1]; | |
4338 | struct nlattr *tx_rates; | |
4339 | struct ieee80211_supported_band *sband; | |
4340 | ||
4341 | if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) | |
4342 | return -EINVAL; | |
4343 | ||
4344 | if (!rdev->ops->set_bitrate_mask) | |
4345 | return -EOPNOTSUPP; | |
4346 | ||
4347 | memset(&mask, 0, sizeof(mask)); | |
4348 | /* Default to all rates enabled */ | |
4349 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
4350 | sband = rdev->wiphy.bands[i]; | |
4351 | mask.control[i].legacy = | |
4352 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
4353 | } | |
4354 | ||
4355 | /* | |
4356 | * The nested attribute uses enum nl80211_band as the index. This maps | |
4357 | * directly to the enum ieee80211_band values used in cfg80211. | |
4358 | */ | |
4359 | nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) | |
4360 | { | |
4361 | enum ieee80211_band band = nla_type(tx_rates); | |
4362 | if (band < 0 || band >= IEEE80211_NUM_BANDS) | |
4363 | return -EINVAL; | |
4364 | sband = rdev->wiphy.bands[band]; | |
4365 | if (sband == NULL) | |
4366 | return -EINVAL; | |
4367 | nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), | |
4368 | nla_len(tx_rates), nl80211_txattr_policy); | |
4369 | if (tb[NL80211_TXRATE_LEGACY]) { | |
4370 | mask.control[band].legacy = rateset_to_mask( | |
4371 | sband, | |
4372 | nla_data(tb[NL80211_TXRATE_LEGACY]), | |
4373 | nla_len(tb[NL80211_TXRATE_LEGACY])); | |
4374 | if (mask.control[band].legacy == 0) | |
4375 | return -EINVAL; | |
4376 | } | |
4377 | } | |
4378 | ||
4379 | return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); | |
4380 | } | |
4381 | ||
4382 | static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) | |
4383 | { | |
4384 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4385 | struct net_device *dev = info->user_ptr[1]; | |
4386 | u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; | |
4387 | ||
4388 | if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) | |
4389 | return -EINVAL; | |
4390 | ||
4391 | if (info->attrs[NL80211_ATTR_FRAME_TYPE]) | |
4392 | frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); | |
4393 | ||
4394 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4395 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && | |
4396 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && | |
4397 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
4398 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && | |
4399 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
4400 | return -EOPNOTSUPP; | |
4401 | ||
4402 | /* not much point in registering if we can't reply */ | |
4403 | if (!rdev->ops->mgmt_tx) | |
4404 | return -EOPNOTSUPP; | |
4405 | ||
4406 | return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, | |
4407 | frame_type, | |
4408 | nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), | |
4409 | nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); | |
4410 | } | |
4411 | ||
4412 | static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) | |
4413 | { | |
4414 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4415 | struct net_device *dev = info->user_ptr[1]; | |
4416 | struct ieee80211_channel *chan; | |
4417 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
4418 | bool channel_type_valid = false; | |
4419 | u32 freq; | |
4420 | int err; | |
4421 | void *hdr; | |
4422 | u64 cookie; | |
4423 | struct sk_buff *msg; | |
4424 | unsigned int wait = 0; | |
4425 | bool offchan; | |
4426 | ||
4427 | if (!info->attrs[NL80211_ATTR_FRAME] || | |
4428 | !info->attrs[NL80211_ATTR_WIPHY_FREQ]) | |
4429 | return -EINVAL; | |
4430 | ||
4431 | if (!rdev->ops->mgmt_tx) | |
4432 | return -EOPNOTSUPP; | |
4433 | ||
4434 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4435 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && | |
4436 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && | |
4437 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
4438 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && | |
4439 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
4440 | return -EOPNOTSUPP; | |
4441 | ||
4442 | if (info->attrs[NL80211_ATTR_DURATION]) { | |
4443 | if (!rdev->ops->mgmt_tx_cancel_wait) | |
4444 | return -EINVAL; | |
4445 | wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); | |
4446 | } | |
4447 | ||
4448 | if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { | |
4449 | channel_type = nla_get_u32( | |
4450 | info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); | |
4451 | if (channel_type != NL80211_CHAN_NO_HT && | |
4452 | channel_type != NL80211_CHAN_HT20 && | |
4453 | channel_type != NL80211_CHAN_HT40PLUS && | |
4454 | channel_type != NL80211_CHAN_HT40MINUS) | |
4455 | return -EINVAL; | |
4456 | channel_type_valid = true; | |
4457 | } | |
4458 | ||
4459 | offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; | |
4460 | ||
4461 | freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); | |
4462 | chan = rdev_freq_to_chan(rdev, freq, channel_type); | |
4463 | if (chan == NULL) | |
4464 | return -EINVAL; | |
4465 | ||
4466 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4467 | if (!msg) | |
4468 | return -ENOMEM; | |
4469 | ||
4470 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
4471 | NL80211_CMD_FRAME); | |
4472 | ||
4473 | if (IS_ERR(hdr)) { | |
4474 | err = PTR_ERR(hdr); | |
4475 | goto free_msg; | |
4476 | } | |
4477 | err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type, | |
4478 | channel_type_valid, wait, | |
4479 | nla_data(info->attrs[NL80211_ATTR_FRAME]), | |
4480 | nla_len(info->attrs[NL80211_ATTR_FRAME]), | |
4481 | &cookie); | |
4482 | if (err) | |
4483 | goto free_msg; | |
4484 | ||
4485 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); | |
4486 | ||
4487 | genlmsg_end(msg, hdr); | |
4488 | return genlmsg_reply(msg, info); | |
4489 | ||
4490 | nla_put_failure: | |
4491 | err = -ENOBUFS; | |
4492 | free_msg: | |
4493 | nlmsg_free(msg); | |
4494 | return err; | |
4495 | } | |
4496 | ||
4497 | static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) | |
4498 | { | |
4499 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4500 | struct net_device *dev = info->user_ptr[1]; | |
4501 | u64 cookie; | |
4502 | ||
4503 | if (!info->attrs[NL80211_ATTR_COOKIE]) | |
4504 | return -EINVAL; | |
4505 | ||
4506 | if (!rdev->ops->mgmt_tx_cancel_wait) | |
4507 | return -EOPNOTSUPP; | |
4508 | ||
4509 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && | |
4510 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && | |
4511 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && | |
4512 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && | |
4513 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && | |
4514 | dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) | |
4515 | return -EOPNOTSUPP; | |
4516 | ||
4517 | cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); | |
4518 | ||
4519 | return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie); | |
4520 | } | |
4521 | ||
4522 | static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) | |
4523 | { | |
4524 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4525 | struct wireless_dev *wdev; | |
4526 | struct net_device *dev = info->user_ptr[1]; | |
4527 | u8 ps_state; | |
4528 | bool state; | |
4529 | int err; | |
4530 | ||
4531 | if (!info->attrs[NL80211_ATTR_PS_STATE]) | |
4532 | return -EINVAL; | |
4533 | ||
4534 | ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); | |
4535 | ||
4536 | if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) | |
4537 | return -EINVAL; | |
4538 | ||
4539 | wdev = dev->ieee80211_ptr; | |
4540 | ||
4541 | if (!rdev->ops->set_power_mgmt) | |
4542 | return -EOPNOTSUPP; | |
4543 | ||
4544 | state = (ps_state == NL80211_PS_ENABLED) ? true : false; | |
4545 | ||
4546 | if (state == wdev->ps) | |
4547 | return 0; | |
4548 | ||
4549 | err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state, | |
4550 | wdev->ps_timeout); | |
4551 | if (!err) | |
4552 | wdev->ps = state; | |
4553 | return err; | |
4554 | } | |
4555 | ||
4556 | static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) | |
4557 | { | |
4558 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4559 | enum nl80211_ps_state ps_state; | |
4560 | struct wireless_dev *wdev; | |
4561 | struct net_device *dev = info->user_ptr[1]; | |
4562 | struct sk_buff *msg; | |
4563 | void *hdr; | |
4564 | int err; | |
4565 | ||
4566 | wdev = dev->ieee80211_ptr; | |
4567 | ||
4568 | if (!rdev->ops->set_power_mgmt) | |
4569 | return -EOPNOTSUPP; | |
4570 | ||
4571 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4572 | if (!msg) | |
4573 | return -ENOMEM; | |
4574 | ||
4575 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
4576 | NL80211_CMD_GET_POWER_SAVE); | |
4577 | if (!hdr) { | |
4578 | err = -ENOBUFS; | |
4579 | goto free_msg; | |
4580 | } | |
4581 | ||
4582 | if (wdev->ps) | |
4583 | ps_state = NL80211_PS_ENABLED; | |
4584 | else | |
4585 | ps_state = NL80211_PS_DISABLED; | |
4586 | ||
4587 | NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state); | |
4588 | ||
4589 | genlmsg_end(msg, hdr); | |
4590 | return genlmsg_reply(msg, info); | |
4591 | ||
4592 | nla_put_failure: | |
4593 | err = -ENOBUFS; | |
4594 | free_msg: | |
4595 | nlmsg_free(msg); | |
4596 | return err; | |
4597 | } | |
4598 | ||
4599 | static struct nla_policy | |
4600 | nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { | |
4601 | [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, | |
4602 | [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, | |
4603 | [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, | |
4604 | }; | |
4605 | ||
4606 | static int nl80211_set_cqm_rssi(struct genl_info *info, | |
4607 | s32 threshold, u32 hysteresis) | |
4608 | { | |
4609 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4610 | struct wireless_dev *wdev; | |
4611 | struct net_device *dev = info->user_ptr[1]; | |
4612 | ||
4613 | if (threshold > 0) | |
4614 | return -EINVAL; | |
4615 | ||
4616 | wdev = dev->ieee80211_ptr; | |
4617 | ||
4618 | if (!rdev->ops->set_cqm_rssi_config) | |
4619 | return -EOPNOTSUPP; | |
4620 | ||
4621 | if (wdev->iftype != NL80211_IFTYPE_STATION && | |
4622 | wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) | |
4623 | return -EOPNOTSUPP; | |
4624 | ||
4625 | return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, | |
4626 | threshold, hysteresis); | |
4627 | } | |
4628 | ||
4629 | static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) | |
4630 | { | |
4631 | struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; | |
4632 | struct nlattr *cqm; | |
4633 | int err; | |
4634 | ||
4635 | cqm = info->attrs[NL80211_ATTR_CQM]; | |
4636 | if (!cqm) { | |
4637 | err = -EINVAL; | |
4638 | goto out; | |
4639 | } | |
4640 | ||
4641 | err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, | |
4642 | nl80211_attr_cqm_policy); | |
4643 | if (err) | |
4644 | goto out; | |
4645 | ||
4646 | if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && | |
4647 | attrs[NL80211_ATTR_CQM_RSSI_HYST]) { | |
4648 | s32 threshold; | |
4649 | u32 hysteresis; | |
4650 | threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); | |
4651 | hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); | |
4652 | err = nl80211_set_cqm_rssi(info, threshold, hysteresis); | |
4653 | } else | |
4654 | err = -EINVAL; | |
4655 | ||
4656 | out: | |
4657 | return err; | |
4658 | } | |
4659 | ||
4660 | static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) | |
4661 | { | |
4662 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4663 | struct net_device *dev = info->user_ptr[1]; | |
4664 | struct mesh_config cfg; | |
4665 | int err; | |
4666 | ||
4667 | /* start with default */ | |
4668 | memcpy(&cfg, &default_mesh_config, sizeof(cfg)); | |
4669 | ||
4670 | if (info->attrs[NL80211_ATTR_MESH_PARAMS]) { | |
4671 | /* and parse parameters if given */ | |
4672 | err = nl80211_parse_mesh_params(info, &cfg, NULL); | |
4673 | if (err) | |
4674 | return err; | |
4675 | } | |
4676 | ||
4677 | if (!info->attrs[NL80211_ATTR_MESH_ID] || | |
4678 | !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) | |
4679 | return -EINVAL; | |
4680 | ||
4681 | return cfg80211_join_mesh(rdev, dev, | |
4682 | nla_data(info->attrs[NL80211_ATTR_MESH_ID]), | |
4683 | nla_len(info->attrs[NL80211_ATTR_MESH_ID]), | |
4684 | &cfg); | |
4685 | } | |
4686 | ||
4687 | static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) | |
4688 | { | |
4689 | struct cfg80211_registered_device *rdev = info->user_ptr[0]; | |
4690 | struct net_device *dev = info->user_ptr[1]; | |
4691 | ||
4692 | return cfg80211_leave_mesh(rdev, dev); | |
4693 | } | |
4694 | ||
4695 | #define NL80211_FLAG_NEED_WIPHY 0x01 | |
4696 | #define NL80211_FLAG_NEED_NETDEV 0x02 | |
4697 | #define NL80211_FLAG_NEED_RTNL 0x04 | |
4698 | #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 | |
4699 | #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ | |
4700 | NL80211_FLAG_CHECK_NETDEV_UP) | |
4701 | ||
4702 | static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, | |
4703 | struct genl_info *info) | |
4704 | { | |
4705 | struct cfg80211_registered_device *rdev; | |
4706 | struct net_device *dev; | |
4707 | int err; | |
4708 | bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; | |
4709 | ||
4710 | if (rtnl) | |
4711 | rtnl_lock(); | |
4712 | ||
4713 | if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { | |
4714 | rdev = cfg80211_get_dev_from_info(info); | |
4715 | if (IS_ERR(rdev)) { | |
4716 | if (rtnl) | |
4717 | rtnl_unlock(); | |
4718 | return PTR_ERR(rdev); | |
4719 | } | |
4720 | info->user_ptr[0] = rdev; | |
4721 | } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { | |
4722 | err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); | |
4723 | if (err) { | |
4724 | if (rtnl) | |
4725 | rtnl_unlock(); | |
4726 | return err; | |
4727 | } | |
4728 | if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && | |
4729 | !netif_running(dev)) { | |
4730 | cfg80211_unlock_rdev(rdev); | |
4731 | dev_put(dev); | |
4732 | if (rtnl) | |
4733 | rtnl_unlock(); | |
4734 | return -ENETDOWN; | |
4735 | } | |
4736 | info->user_ptr[0] = rdev; | |
4737 | info->user_ptr[1] = dev; | |
4738 | } | |
4739 | ||
4740 | return 0; | |
4741 | } | |
4742 | ||
4743 | static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, | |
4744 | struct genl_info *info) | |
4745 | { | |
4746 | if (info->user_ptr[0]) | |
4747 | cfg80211_unlock_rdev(info->user_ptr[0]); | |
4748 | if (info->user_ptr[1]) | |
4749 | dev_put(info->user_ptr[1]); | |
4750 | if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) | |
4751 | rtnl_unlock(); | |
4752 | } | |
4753 | ||
4754 | static struct genl_ops nl80211_ops[] = { | |
4755 | { | |
4756 | .cmd = NL80211_CMD_GET_WIPHY, | |
4757 | .doit = nl80211_get_wiphy, | |
4758 | .dumpit = nl80211_dump_wiphy, | |
4759 | .policy = nl80211_policy, | |
4760 | /* can be retrieved by unprivileged users */ | |
4761 | .internal_flags = NL80211_FLAG_NEED_WIPHY, | |
4762 | }, | |
4763 | { | |
4764 | .cmd = NL80211_CMD_SET_WIPHY, | |
4765 | .doit = nl80211_set_wiphy, | |
4766 | .policy = nl80211_policy, | |
4767 | .flags = GENL_ADMIN_PERM, | |
4768 | .internal_flags = NL80211_FLAG_NEED_RTNL, | |
4769 | }, | |
4770 | { | |
4771 | .cmd = NL80211_CMD_GET_INTERFACE, | |
4772 | .doit = nl80211_get_interface, | |
4773 | .dumpit = nl80211_dump_interface, | |
4774 | .policy = nl80211_policy, | |
4775 | /* can be retrieved by unprivileged users */ | |
4776 | .internal_flags = NL80211_FLAG_NEED_NETDEV, | |
4777 | }, | |
4778 | { | |
4779 | .cmd = NL80211_CMD_SET_INTERFACE, | |
4780 | .doit = nl80211_set_interface, | |
4781 | .policy = nl80211_policy, | |
4782 | .flags = GENL_ADMIN_PERM, | |
4783 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4784 | NL80211_FLAG_NEED_RTNL, | |
4785 | }, | |
4786 | { | |
4787 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
4788 | .doit = nl80211_new_interface, | |
4789 | .policy = nl80211_policy, | |
4790 | .flags = GENL_ADMIN_PERM, | |
4791 | .internal_flags = NL80211_FLAG_NEED_WIPHY | | |
4792 | NL80211_FLAG_NEED_RTNL, | |
4793 | }, | |
4794 | { | |
4795 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
4796 | .doit = nl80211_del_interface, | |
4797 | .policy = nl80211_policy, | |
4798 | .flags = GENL_ADMIN_PERM, | |
4799 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4800 | NL80211_FLAG_NEED_RTNL, | |
4801 | }, | |
4802 | { | |
4803 | .cmd = NL80211_CMD_GET_KEY, | |
4804 | .doit = nl80211_get_key, | |
4805 | .policy = nl80211_policy, | |
4806 | .flags = GENL_ADMIN_PERM, | |
4807 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4808 | NL80211_FLAG_NEED_RTNL, | |
4809 | }, | |
4810 | { | |
4811 | .cmd = NL80211_CMD_SET_KEY, | |
4812 | .doit = nl80211_set_key, | |
4813 | .policy = nl80211_policy, | |
4814 | .flags = GENL_ADMIN_PERM, | |
4815 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4816 | NL80211_FLAG_NEED_RTNL, | |
4817 | }, | |
4818 | { | |
4819 | .cmd = NL80211_CMD_NEW_KEY, | |
4820 | .doit = nl80211_new_key, | |
4821 | .policy = nl80211_policy, | |
4822 | .flags = GENL_ADMIN_PERM, | |
4823 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4824 | NL80211_FLAG_NEED_RTNL, | |
4825 | }, | |
4826 | { | |
4827 | .cmd = NL80211_CMD_DEL_KEY, | |
4828 | .doit = nl80211_del_key, | |
4829 | .policy = nl80211_policy, | |
4830 | .flags = GENL_ADMIN_PERM, | |
4831 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4832 | NL80211_FLAG_NEED_RTNL, | |
4833 | }, | |
4834 | { | |
4835 | .cmd = NL80211_CMD_SET_BEACON, | |
4836 | .policy = nl80211_policy, | |
4837 | .flags = GENL_ADMIN_PERM, | |
4838 | .doit = nl80211_addset_beacon, | |
4839 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4840 | NL80211_FLAG_NEED_RTNL, | |
4841 | }, | |
4842 | { | |
4843 | .cmd = NL80211_CMD_NEW_BEACON, | |
4844 | .policy = nl80211_policy, | |
4845 | .flags = GENL_ADMIN_PERM, | |
4846 | .doit = nl80211_addset_beacon, | |
4847 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4848 | NL80211_FLAG_NEED_RTNL, | |
4849 | }, | |
4850 | { | |
4851 | .cmd = NL80211_CMD_DEL_BEACON, | |
4852 | .policy = nl80211_policy, | |
4853 | .flags = GENL_ADMIN_PERM, | |
4854 | .doit = nl80211_del_beacon, | |
4855 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4856 | NL80211_FLAG_NEED_RTNL, | |
4857 | }, | |
4858 | { | |
4859 | .cmd = NL80211_CMD_GET_STATION, | |
4860 | .doit = nl80211_get_station, | |
4861 | .dumpit = nl80211_dump_station, | |
4862 | .policy = nl80211_policy, | |
4863 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4864 | NL80211_FLAG_NEED_RTNL, | |
4865 | }, | |
4866 | { | |
4867 | .cmd = NL80211_CMD_SET_STATION, | |
4868 | .doit = nl80211_set_station, | |
4869 | .policy = nl80211_policy, | |
4870 | .flags = GENL_ADMIN_PERM, | |
4871 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4872 | NL80211_FLAG_NEED_RTNL, | |
4873 | }, | |
4874 | { | |
4875 | .cmd = NL80211_CMD_NEW_STATION, | |
4876 | .doit = nl80211_new_station, | |
4877 | .policy = nl80211_policy, | |
4878 | .flags = GENL_ADMIN_PERM, | |
4879 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4880 | NL80211_FLAG_NEED_RTNL, | |
4881 | }, | |
4882 | { | |
4883 | .cmd = NL80211_CMD_DEL_STATION, | |
4884 | .doit = nl80211_del_station, | |
4885 | .policy = nl80211_policy, | |
4886 | .flags = GENL_ADMIN_PERM, | |
4887 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4888 | NL80211_FLAG_NEED_RTNL, | |
4889 | }, | |
4890 | { | |
4891 | .cmd = NL80211_CMD_GET_MPATH, | |
4892 | .doit = nl80211_get_mpath, | |
4893 | .dumpit = nl80211_dump_mpath, | |
4894 | .policy = nl80211_policy, | |
4895 | .flags = GENL_ADMIN_PERM, | |
4896 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4897 | NL80211_FLAG_NEED_RTNL, | |
4898 | }, | |
4899 | { | |
4900 | .cmd = NL80211_CMD_SET_MPATH, | |
4901 | .doit = nl80211_set_mpath, | |
4902 | .policy = nl80211_policy, | |
4903 | .flags = GENL_ADMIN_PERM, | |
4904 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4905 | NL80211_FLAG_NEED_RTNL, | |
4906 | }, | |
4907 | { | |
4908 | .cmd = NL80211_CMD_NEW_MPATH, | |
4909 | .doit = nl80211_new_mpath, | |
4910 | .policy = nl80211_policy, | |
4911 | .flags = GENL_ADMIN_PERM, | |
4912 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4913 | NL80211_FLAG_NEED_RTNL, | |
4914 | }, | |
4915 | { | |
4916 | .cmd = NL80211_CMD_DEL_MPATH, | |
4917 | .doit = nl80211_del_mpath, | |
4918 | .policy = nl80211_policy, | |
4919 | .flags = GENL_ADMIN_PERM, | |
4920 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4921 | NL80211_FLAG_NEED_RTNL, | |
4922 | }, | |
4923 | { | |
4924 | .cmd = NL80211_CMD_SET_BSS, | |
4925 | .doit = nl80211_set_bss, | |
4926 | .policy = nl80211_policy, | |
4927 | .flags = GENL_ADMIN_PERM, | |
4928 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4929 | NL80211_FLAG_NEED_RTNL, | |
4930 | }, | |
4931 | { | |
4932 | .cmd = NL80211_CMD_GET_REG, | |
4933 | .doit = nl80211_get_reg, | |
4934 | .policy = nl80211_policy, | |
4935 | /* can be retrieved by unprivileged users */ | |
4936 | }, | |
4937 | { | |
4938 | .cmd = NL80211_CMD_SET_REG, | |
4939 | .doit = nl80211_set_reg, | |
4940 | .policy = nl80211_policy, | |
4941 | .flags = GENL_ADMIN_PERM, | |
4942 | }, | |
4943 | { | |
4944 | .cmd = NL80211_CMD_REQ_SET_REG, | |
4945 | .doit = nl80211_req_set_reg, | |
4946 | .policy = nl80211_policy, | |
4947 | .flags = GENL_ADMIN_PERM, | |
4948 | }, | |
4949 | { | |
4950 | .cmd = NL80211_CMD_GET_MESH_PARAMS, | |
4951 | .doit = nl80211_get_mesh_params, | |
4952 | .policy = nl80211_policy, | |
4953 | /* can be retrieved by unprivileged users */ | |
4954 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
4955 | NL80211_FLAG_NEED_RTNL, | |
4956 | }, | |
4957 | { | |
4958 | .cmd = NL80211_CMD_SET_MESH_PARAMS, | |
4959 | .doit = nl80211_update_mesh_params, | |
4960 | .policy = nl80211_policy, | |
4961 | .flags = GENL_ADMIN_PERM, | |
4962 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4963 | NL80211_FLAG_NEED_RTNL, | |
4964 | }, | |
4965 | { | |
4966 | .cmd = NL80211_CMD_TRIGGER_SCAN, | |
4967 | .doit = nl80211_trigger_scan, | |
4968 | .policy = nl80211_policy, | |
4969 | .flags = GENL_ADMIN_PERM, | |
4970 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4971 | NL80211_FLAG_NEED_RTNL, | |
4972 | }, | |
4973 | { | |
4974 | .cmd = NL80211_CMD_GET_SCAN, | |
4975 | .policy = nl80211_policy, | |
4976 | .dumpit = nl80211_dump_scan, | |
4977 | }, | |
4978 | { | |
4979 | .cmd = NL80211_CMD_AUTHENTICATE, | |
4980 | .doit = nl80211_authenticate, | |
4981 | .policy = nl80211_policy, | |
4982 | .flags = GENL_ADMIN_PERM, | |
4983 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4984 | NL80211_FLAG_NEED_RTNL, | |
4985 | }, | |
4986 | { | |
4987 | .cmd = NL80211_CMD_ASSOCIATE, | |
4988 | .doit = nl80211_associate, | |
4989 | .policy = nl80211_policy, | |
4990 | .flags = GENL_ADMIN_PERM, | |
4991 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
4992 | NL80211_FLAG_NEED_RTNL, | |
4993 | }, | |
4994 | { | |
4995 | .cmd = NL80211_CMD_DEAUTHENTICATE, | |
4996 | .doit = nl80211_deauthenticate, | |
4997 | .policy = nl80211_policy, | |
4998 | .flags = GENL_ADMIN_PERM, | |
4999 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5000 | NL80211_FLAG_NEED_RTNL, | |
5001 | }, | |
5002 | { | |
5003 | .cmd = NL80211_CMD_DISASSOCIATE, | |
5004 | .doit = nl80211_disassociate, | |
5005 | .policy = nl80211_policy, | |
5006 | .flags = GENL_ADMIN_PERM, | |
5007 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5008 | NL80211_FLAG_NEED_RTNL, | |
5009 | }, | |
5010 | { | |
5011 | .cmd = NL80211_CMD_JOIN_IBSS, | |
5012 | .doit = nl80211_join_ibss, | |
5013 | .policy = nl80211_policy, | |
5014 | .flags = GENL_ADMIN_PERM, | |
5015 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5016 | NL80211_FLAG_NEED_RTNL, | |
5017 | }, | |
5018 | { | |
5019 | .cmd = NL80211_CMD_LEAVE_IBSS, | |
5020 | .doit = nl80211_leave_ibss, | |
5021 | .policy = nl80211_policy, | |
5022 | .flags = GENL_ADMIN_PERM, | |
5023 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5024 | NL80211_FLAG_NEED_RTNL, | |
5025 | }, | |
5026 | #ifdef CONFIG_NL80211_TESTMODE | |
5027 | { | |
5028 | .cmd = NL80211_CMD_TESTMODE, | |
5029 | .doit = nl80211_testmode_do, | |
5030 | .policy = nl80211_policy, | |
5031 | .flags = GENL_ADMIN_PERM, | |
5032 | .internal_flags = NL80211_FLAG_NEED_WIPHY | | |
5033 | NL80211_FLAG_NEED_RTNL, | |
5034 | }, | |
5035 | #endif | |
5036 | { | |
5037 | .cmd = NL80211_CMD_CONNECT, | |
5038 | .doit = nl80211_connect, | |
5039 | .policy = nl80211_policy, | |
5040 | .flags = GENL_ADMIN_PERM, | |
5041 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5042 | NL80211_FLAG_NEED_RTNL, | |
5043 | }, | |
5044 | { | |
5045 | .cmd = NL80211_CMD_DISCONNECT, | |
5046 | .doit = nl80211_disconnect, | |
5047 | .policy = nl80211_policy, | |
5048 | .flags = GENL_ADMIN_PERM, | |
5049 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5050 | NL80211_FLAG_NEED_RTNL, | |
5051 | }, | |
5052 | { | |
5053 | .cmd = NL80211_CMD_SET_WIPHY_NETNS, | |
5054 | .doit = nl80211_wiphy_netns, | |
5055 | .policy = nl80211_policy, | |
5056 | .flags = GENL_ADMIN_PERM, | |
5057 | .internal_flags = NL80211_FLAG_NEED_WIPHY | | |
5058 | NL80211_FLAG_NEED_RTNL, | |
5059 | }, | |
5060 | { | |
5061 | .cmd = NL80211_CMD_GET_SURVEY, | |
5062 | .policy = nl80211_policy, | |
5063 | .dumpit = nl80211_dump_survey, | |
5064 | }, | |
5065 | { | |
5066 | .cmd = NL80211_CMD_SET_PMKSA, | |
5067 | .doit = nl80211_setdel_pmksa, | |
5068 | .policy = nl80211_policy, | |
5069 | .flags = GENL_ADMIN_PERM, | |
5070 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5071 | NL80211_FLAG_NEED_RTNL, | |
5072 | }, | |
5073 | { | |
5074 | .cmd = NL80211_CMD_DEL_PMKSA, | |
5075 | .doit = nl80211_setdel_pmksa, | |
5076 | .policy = nl80211_policy, | |
5077 | .flags = GENL_ADMIN_PERM, | |
5078 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5079 | NL80211_FLAG_NEED_RTNL, | |
5080 | }, | |
5081 | { | |
5082 | .cmd = NL80211_CMD_FLUSH_PMKSA, | |
5083 | .doit = nl80211_flush_pmksa, | |
5084 | .policy = nl80211_policy, | |
5085 | .flags = GENL_ADMIN_PERM, | |
5086 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5087 | NL80211_FLAG_NEED_RTNL, | |
5088 | }, | |
5089 | { | |
5090 | .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, | |
5091 | .doit = nl80211_remain_on_channel, | |
5092 | .policy = nl80211_policy, | |
5093 | .flags = GENL_ADMIN_PERM, | |
5094 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5095 | NL80211_FLAG_NEED_RTNL, | |
5096 | }, | |
5097 | { | |
5098 | .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, | |
5099 | .doit = nl80211_cancel_remain_on_channel, | |
5100 | .policy = nl80211_policy, | |
5101 | .flags = GENL_ADMIN_PERM, | |
5102 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5103 | NL80211_FLAG_NEED_RTNL, | |
5104 | }, | |
5105 | { | |
5106 | .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, | |
5107 | .doit = nl80211_set_tx_bitrate_mask, | |
5108 | .policy = nl80211_policy, | |
5109 | .flags = GENL_ADMIN_PERM, | |
5110 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5111 | NL80211_FLAG_NEED_RTNL, | |
5112 | }, | |
5113 | { | |
5114 | .cmd = NL80211_CMD_REGISTER_FRAME, | |
5115 | .doit = nl80211_register_mgmt, | |
5116 | .policy = nl80211_policy, | |
5117 | .flags = GENL_ADMIN_PERM, | |
5118 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5119 | NL80211_FLAG_NEED_RTNL, | |
5120 | }, | |
5121 | { | |
5122 | .cmd = NL80211_CMD_FRAME, | |
5123 | .doit = nl80211_tx_mgmt, | |
5124 | .policy = nl80211_policy, | |
5125 | .flags = GENL_ADMIN_PERM, | |
5126 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5127 | NL80211_FLAG_NEED_RTNL, | |
5128 | }, | |
5129 | { | |
5130 | .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, | |
5131 | .doit = nl80211_tx_mgmt_cancel_wait, | |
5132 | .policy = nl80211_policy, | |
5133 | .flags = GENL_ADMIN_PERM, | |
5134 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5135 | NL80211_FLAG_NEED_RTNL, | |
5136 | }, | |
5137 | { | |
5138 | .cmd = NL80211_CMD_SET_POWER_SAVE, | |
5139 | .doit = nl80211_set_power_save, | |
5140 | .policy = nl80211_policy, | |
5141 | .flags = GENL_ADMIN_PERM, | |
5142 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5143 | NL80211_FLAG_NEED_RTNL, | |
5144 | }, | |
5145 | { | |
5146 | .cmd = NL80211_CMD_GET_POWER_SAVE, | |
5147 | .doit = nl80211_get_power_save, | |
5148 | .policy = nl80211_policy, | |
5149 | /* can be retrieved by unprivileged users */ | |
5150 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5151 | NL80211_FLAG_NEED_RTNL, | |
5152 | }, | |
5153 | { | |
5154 | .cmd = NL80211_CMD_SET_CQM, | |
5155 | .doit = nl80211_set_cqm, | |
5156 | .policy = nl80211_policy, | |
5157 | .flags = GENL_ADMIN_PERM, | |
5158 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5159 | NL80211_FLAG_NEED_RTNL, | |
5160 | }, | |
5161 | { | |
5162 | .cmd = NL80211_CMD_SET_CHANNEL, | |
5163 | .doit = nl80211_set_channel, | |
5164 | .policy = nl80211_policy, | |
5165 | .flags = GENL_ADMIN_PERM, | |
5166 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5167 | NL80211_FLAG_NEED_RTNL, | |
5168 | }, | |
5169 | { | |
5170 | .cmd = NL80211_CMD_SET_WDS_PEER, | |
5171 | .doit = nl80211_set_wds_peer, | |
5172 | .policy = nl80211_policy, | |
5173 | .flags = GENL_ADMIN_PERM, | |
5174 | .internal_flags = NL80211_FLAG_NEED_NETDEV | | |
5175 | NL80211_FLAG_NEED_RTNL, | |
5176 | }, | |
5177 | { | |
5178 | .cmd = NL80211_CMD_JOIN_MESH, | |
5179 | .doit = nl80211_join_mesh, | |
5180 | .policy = nl80211_policy, | |
5181 | .flags = GENL_ADMIN_PERM, | |
5182 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5183 | NL80211_FLAG_NEED_RTNL, | |
5184 | }, | |
5185 | { | |
5186 | .cmd = NL80211_CMD_LEAVE_MESH, | |
5187 | .doit = nl80211_leave_mesh, | |
5188 | .policy = nl80211_policy, | |
5189 | .flags = GENL_ADMIN_PERM, | |
5190 | .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | | |
5191 | NL80211_FLAG_NEED_RTNL, | |
5192 | }, | |
5193 | }; | |
5194 | ||
5195 | static struct genl_multicast_group nl80211_mlme_mcgrp = { | |
5196 | .name = "mlme", | |
5197 | }; | |
5198 | ||
5199 | /* multicast groups */ | |
5200 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
5201 | .name = "config", | |
5202 | }; | |
5203 | static struct genl_multicast_group nl80211_scan_mcgrp = { | |
5204 | .name = "scan", | |
5205 | }; | |
5206 | static struct genl_multicast_group nl80211_regulatory_mcgrp = { | |
5207 | .name = "regulatory", | |
5208 | }; | |
5209 | ||
5210 | /* notification functions */ | |
5211 | ||
5212 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
5213 | { | |
5214 | struct sk_buff *msg; | |
5215 | ||
5216 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5217 | if (!msg) | |
5218 | return; | |
5219 | ||
5220 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
5221 | nlmsg_free(msg); | |
5222 | return; | |
5223 | } | |
5224 | ||
5225 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5226 | nl80211_config_mcgrp.id, GFP_KERNEL); | |
5227 | } | |
5228 | ||
5229 | static int nl80211_add_scan_req(struct sk_buff *msg, | |
5230 | struct cfg80211_registered_device *rdev) | |
5231 | { | |
5232 | struct cfg80211_scan_request *req = rdev->scan_req; | |
5233 | struct nlattr *nest; | |
5234 | int i; | |
5235 | ||
5236 | ASSERT_RDEV_LOCK(rdev); | |
5237 | ||
5238 | if (WARN_ON(!req)) | |
5239 | return 0; | |
5240 | ||
5241 | nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); | |
5242 | if (!nest) | |
5243 | goto nla_put_failure; | |
5244 | for (i = 0; i < req->n_ssids; i++) | |
5245 | NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid); | |
5246 | nla_nest_end(msg, nest); | |
5247 | ||
5248 | nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); | |
5249 | if (!nest) | |
5250 | goto nla_put_failure; | |
5251 | for (i = 0; i < req->n_channels; i++) | |
5252 | NLA_PUT_U32(msg, i, req->channels[i]->center_freq); | |
5253 | nla_nest_end(msg, nest); | |
5254 | ||
5255 | if (req->ie) | |
5256 | NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie); | |
5257 | ||
5258 | return 0; | |
5259 | nla_put_failure: | |
5260 | return -ENOBUFS; | |
5261 | } | |
5262 | ||
5263 | static int nl80211_send_scan_msg(struct sk_buff *msg, | |
5264 | struct cfg80211_registered_device *rdev, | |
5265 | struct net_device *netdev, | |
5266 | u32 pid, u32 seq, int flags, | |
5267 | u32 cmd) | |
5268 | { | |
5269 | void *hdr; | |
5270 | ||
5271 | hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); | |
5272 | if (!hdr) | |
5273 | return -1; | |
5274 | ||
5275 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5276 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5277 | ||
5278 | /* ignore errors and send incomplete event anyway */ | |
5279 | nl80211_add_scan_req(msg, rdev); | |
5280 | ||
5281 | return genlmsg_end(msg, hdr); | |
5282 | ||
5283 | nla_put_failure: | |
5284 | genlmsg_cancel(msg, hdr); | |
5285 | return -EMSGSIZE; | |
5286 | } | |
5287 | ||
5288 | void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, | |
5289 | struct net_device *netdev) | |
5290 | { | |
5291 | struct sk_buff *msg; | |
5292 | ||
5293 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
5294 | if (!msg) | |
5295 | return; | |
5296 | ||
5297 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, | |
5298 | NL80211_CMD_TRIGGER_SCAN) < 0) { | |
5299 | nlmsg_free(msg); | |
5300 | return; | |
5301 | } | |
5302 | ||
5303 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5304 | nl80211_scan_mcgrp.id, GFP_KERNEL); | |
5305 | } | |
5306 | ||
5307 | void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, | |
5308 | struct net_device *netdev) | |
5309 | { | |
5310 | struct sk_buff *msg; | |
5311 | ||
5312 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5313 | if (!msg) | |
5314 | return; | |
5315 | ||
5316 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, | |
5317 | NL80211_CMD_NEW_SCAN_RESULTS) < 0) { | |
5318 | nlmsg_free(msg); | |
5319 | return; | |
5320 | } | |
5321 | ||
5322 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5323 | nl80211_scan_mcgrp.id, GFP_KERNEL); | |
5324 | } | |
5325 | ||
5326 | void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, | |
5327 | struct net_device *netdev) | |
5328 | { | |
5329 | struct sk_buff *msg; | |
5330 | ||
5331 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5332 | if (!msg) | |
5333 | return; | |
5334 | ||
5335 | if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, | |
5336 | NL80211_CMD_SCAN_ABORTED) < 0) { | |
5337 | nlmsg_free(msg); | |
5338 | return; | |
5339 | } | |
5340 | ||
5341 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5342 | nl80211_scan_mcgrp.id, GFP_KERNEL); | |
5343 | } | |
5344 | ||
5345 | /* | |
5346 | * This can happen on global regulatory changes or device specific settings | |
5347 | * based on custom world regulatory domains. | |
5348 | */ | |
5349 | void nl80211_send_reg_change_event(struct regulatory_request *request) | |
5350 | { | |
5351 | struct sk_buff *msg; | |
5352 | void *hdr; | |
5353 | ||
5354 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5355 | if (!msg) | |
5356 | return; | |
5357 | ||
5358 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); | |
5359 | if (!hdr) { | |
5360 | nlmsg_free(msg); | |
5361 | return; | |
5362 | } | |
5363 | ||
5364 | /* Userspace can always count this one always being set */ | |
5365 | NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator); | |
5366 | ||
5367 | if (request->alpha2[0] == '0' && request->alpha2[1] == '0') | |
5368 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, | |
5369 | NL80211_REGDOM_TYPE_WORLD); | |
5370 | else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') | |
5371 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, | |
5372 | NL80211_REGDOM_TYPE_CUSTOM_WORLD); | |
5373 | else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || | |
5374 | request->intersect) | |
5375 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, | |
5376 | NL80211_REGDOM_TYPE_INTERSECTION); | |
5377 | else { | |
5378 | NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, | |
5379 | NL80211_REGDOM_TYPE_COUNTRY); | |
5380 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2); | |
5381 | } | |
5382 | ||
5383 | if (wiphy_idx_valid(request->wiphy_idx)) | |
5384 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx); | |
5385 | ||
5386 | if (genlmsg_end(msg, hdr) < 0) { | |
5387 | nlmsg_free(msg); | |
5388 | return; | |
5389 | } | |
5390 | ||
5391 | rcu_read_lock(); | |
5392 | genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, | |
5393 | GFP_ATOMIC); | |
5394 | rcu_read_unlock(); | |
5395 | ||
5396 | return; | |
5397 | ||
5398 | nla_put_failure: | |
5399 | genlmsg_cancel(msg, hdr); | |
5400 | nlmsg_free(msg); | |
5401 | } | |
5402 | ||
5403 | static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, | |
5404 | struct net_device *netdev, | |
5405 | const u8 *buf, size_t len, | |
5406 | enum nl80211_commands cmd, gfp_t gfp) | |
5407 | { | |
5408 | struct sk_buff *msg; | |
5409 | void *hdr; | |
5410 | ||
5411 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5412 | if (!msg) | |
5413 | return; | |
5414 | ||
5415 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); | |
5416 | if (!hdr) { | |
5417 | nlmsg_free(msg); | |
5418 | return; | |
5419 | } | |
5420 | ||
5421 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5422 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5423 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); | |
5424 | ||
5425 | if (genlmsg_end(msg, hdr) < 0) { | |
5426 | nlmsg_free(msg); | |
5427 | return; | |
5428 | } | |
5429 | ||
5430 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5431 | nl80211_mlme_mcgrp.id, gfp); | |
5432 | return; | |
5433 | ||
5434 | nla_put_failure: | |
5435 | genlmsg_cancel(msg, hdr); | |
5436 | nlmsg_free(msg); | |
5437 | } | |
5438 | ||
5439 | void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, | |
5440 | struct net_device *netdev, const u8 *buf, | |
5441 | size_t len, gfp_t gfp) | |
5442 | { | |
5443 | nl80211_send_mlme_event(rdev, netdev, buf, len, | |
5444 | NL80211_CMD_AUTHENTICATE, gfp); | |
5445 | } | |
5446 | ||
5447 | void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, | |
5448 | struct net_device *netdev, const u8 *buf, | |
5449 | size_t len, gfp_t gfp) | |
5450 | { | |
5451 | nl80211_send_mlme_event(rdev, netdev, buf, len, | |
5452 | NL80211_CMD_ASSOCIATE, gfp); | |
5453 | } | |
5454 | ||
5455 | void nl80211_send_deauth(struct cfg80211_registered_device *rdev, | |
5456 | struct net_device *netdev, const u8 *buf, | |
5457 | size_t len, gfp_t gfp) | |
5458 | { | |
5459 | nl80211_send_mlme_event(rdev, netdev, buf, len, | |
5460 | NL80211_CMD_DEAUTHENTICATE, gfp); | |
5461 | } | |
5462 | ||
5463 | void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, | |
5464 | struct net_device *netdev, const u8 *buf, | |
5465 | size_t len, gfp_t gfp) | |
5466 | { | |
5467 | nl80211_send_mlme_event(rdev, netdev, buf, len, | |
5468 | NL80211_CMD_DISASSOCIATE, gfp); | |
5469 | } | |
5470 | ||
5471 | static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, | |
5472 | struct net_device *netdev, int cmd, | |
5473 | const u8 *addr, gfp_t gfp) | |
5474 | { | |
5475 | struct sk_buff *msg; | |
5476 | void *hdr; | |
5477 | ||
5478 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5479 | if (!msg) | |
5480 | return; | |
5481 | ||
5482 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); | |
5483 | if (!hdr) { | |
5484 | nlmsg_free(msg); | |
5485 | return; | |
5486 | } | |
5487 | ||
5488 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5489 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5490 | NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT); | |
5491 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); | |
5492 | ||
5493 | if (genlmsg_end(msg, hdr) < 0) { | |
5494 | nlmsg_free(msg); | |
5495 | return; | |
5496 | } | |
5497 | ||
5498 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5499 | nl80211_mlme_mcgrp.id, gfp); | |
5500 | return; | |
5501 | ||
5502 | nla_put_failure: | |
5503 | genlmsg_cancel(msg, hdr); | |
5504 | nlmsg_free(msg); | |
5505 | } | |
5506 | ||
5507 | void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, | |
5508 | struct net_device *netdev, const u8 *addr, | |
5509 | gfp_t gfp) | |
5510 | { | |
5511 | nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, | |
5512 | addr, gfp); | |
5513 | } | |
5514 | ||
5515 | void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, | |
5516 | struct net_device *netdev, const u8 *addr, | |
5517 | gfp_t gfp) | |
5518 | { | |
5519 | nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, | |
5520 | addr, gfp); | |
5521 | } | |
5522 | ||
5523 | void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, | |
5524 | struct net_device *netdev, const u8 *bssid, | |
5525 | const u8 *req_ie, size_t req_ie_len, | |
5526 | const u8 *resp_ie, size_t resp_ie_len, | |
5527 | u16 status, gfp_t gfp) | |
5528 | { | |
5529 | struct sk_buff *msg; | |
5530 | void *hdr; | |
5531 | ||
5532 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); | |
5533 | if (!msg) | |
5534 | return; | |
5535 | ||
5536 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); | |
5537 | if (!hdr) { | |
5538 | nlmsg_free(msg); | |
5539 | return; | |
5540 | } | |
5541 | ||
5542 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5543 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5544 | if (bssid) | |
5545 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); | |
5546 | NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status); | |
5547 | if (req_ie) | |
5548 | NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); | |
5549 | if (resp_ie) | |
5550 | NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); | |
5551 | ||
5552 | if (genlmsg_end(msg, hdr) < 0) { | |
5553 | nlmsg_free(msg); | |
5554 | return; | |
5555 | } | |
5556 | ||
5557 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5558 | nl80211_mlme_mcgrp.id, gfp); | |
5559 | return; | |
5560 | ||
5561 | nla_put_failure: | |
5562 | genlmsg_cancel(msg, hdr); | |
5563 | nlmsg_free(msg); | |
5564 | ||
5565 | } | |
5566 | ||
5567 | void nl80211_send_roamed(struct cfg80211_registered_device *rdev, | |
5568 | struct net_device *netdev, const u8 *bssid, | |
5569 | const u8 *req_ie, size_t req_ie_len, | |
5570 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
5571 | { | |
5572 | struct sk_buff *msg; | |
5573 | void *hdr; | |
5574 | ||
5575 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); | |
5576 | if (!msg) | |
5577 | return; | |
5578 | ||
5579 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); | |
5580 | if (!hdr) { | |
5581 | nlmsg_free(msg); | |
5582 | return; | |
5583 | } | |
5584 | ||
5585 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5586 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5587 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); | |
5588 | if (req_ie) | |
5589 | NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); | |
5590 | if (resp_ie) | |
5591 | NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); | |
5592 | ||
5593 | if (genlmsg_end(msg, hdr) < 0) { | |
5594 | nlmsg_free(msg); | |
5595 | return; | |
5596 | } | |
5597 | ||
5598 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5599 | nl80211_mlme_mcgrp.id, gfp); | |
5600 | return; | |
5601 | ||
5602 | nla_put_failure: | |
5603 | genlmsg_cancel(msg, hdr); | |
5604 | nlmsg_free(msg); | |
5605 | ||
5606 | } | |
5607 | ||
5608 | void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, | |
5609 | struct net_device *netdev, u16 reason, | |
5610 | const u8 *ie, size_t ie_len, bool from_ap) | |
5611 | { | |
5612 | struct sk_buff *msg; | |
5613 | void *hdr; | |
5614 | ||
5615 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
5616 | if (!msg) | |
5617 | return; | |
5618 | ||
5619 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); | |
5620 | if (!hdr) { | |
5621 | nlmsg_free(msg); | |
5622 | return; | |
5623 | } | |
5624 | ||
5625 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5626 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5627 | if (from_ap && reason) | |
5628 | NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason); | |
5629 | if (from_ap) | |
5630 | NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP); | |
5631 | if (ie) | |
5632 | NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie); | |
5633 | ||
5634 | if (genlmsg_end(msg, hdr) < 0) { | |
5635 | nlmsg_free(msg); | |
5636 | return; | |
5637 | } | |
5638 | ||
5639 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5640 | nl80211_mlme_mcgrp.id, GFP_KERNEL); | |
5641 | return; | |
5642 | ||
5643 | nla_put_failure: | |
5644 | genlmsg_cancel(msg, hdr); | |
5645 | nlmsg_free(msg); | |
5646 | ||
5647 | } | |
5648 | ||
5649 | void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, | |
5650 | struct net_device *netdev, const u8 *bssid, | |
5651 | 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, NL80211_CMD_JOIN_IBSS); | |
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(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); | |
5669 | ||
5670 | if (genlmsg_end(msg, hdr) < 0) { | |
5671 | nlmsg_free(msg); | |
5672 | return; | |
5673 | } | |
5674 | ||
5675 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5676 | nl80211_mlme_mcgrp.id, gfp); | |
5677 | return; | |
5678 | ||
5679 | nla_put_failure: | |
5680 | genlmsg_cancel(msg, hdr); | |
5681 | nlmsg_free(msg); | |
5682 | } | |
5683 | ||
5684 | void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, | |
5685 | struct net_device *netdev, const u8 *addr, | |
5686 | enum nl80211_key_type key_type, int key_id, | |
5687 | const u8 *tsc, gfp_t gfp) | |
5688 | { | |
5689 | struct sk_buff *msg; | |
5690 | void *hdr; | |
5691 | ||
5692 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5693 | if (!msg) | |
5694 | return; | |
5695 | ||
5696 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); | |
5697 | if (!hdr) { | |
5698 | nlmsg_free(msg); | |
5699 | return; | |
5700 | } | |
5701 | ||
5702 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5703 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5704 | if (addr) | |
5705 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); | |
5706 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type); | |
5707 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id); | |
5708 | if (tsc) | |
5709 | NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc); | |
5710 | ||
5711 | if (genlmsg_end(msg, hdr) < 0) { | |
5712 | nlmsg_free(msg); | |
5713 | return; | |
5714 | } | |
5715 | ||
5716 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5717 | nl80211_mlme_mcgrp.id, gfp); | |
5718 | return; | |
5719 | ||
5720 | nla_put_failure: | |
5721 | genlmsg_cancel(msg, hdr); | |
5722 | nlmsg_free(msg); | |
5723 | } | |
5724 | ||
5725 | void nl80211_send_beacon_hint_event(struct wiphy *wiphy, | |
5726 | struct ieee80211_channel *channel_before, | |
5727 | struct ieee80211_channel *channel_after) | |
5728 | { | |
5729 | struct sk_buff *msg; | |
5730 | void *hdr; | |
5731 | struct nlattr *nl_freq; | |
5732 | ||
5733 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); | |
5734 | if (!msg) | |
5735 | return; | |
5736 | ||
5737 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); | |
5738 | if (!hdr) { | |
5739 | nlmsg_free(msg); | |
5740 | return; | |
5741 | } | |
5742 | ||
5743 | /* | |
5744 | * Since we are applying the beacon hint to a wiphy we know its | |
5745 | * wiphy_idx is valid | |
5746 | */ | |
5747 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)); | |
5748 | ||
5749 | /* Before */ | |
5750 | nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); | |
5751 | if (!nl_freq) | |
5752 | goto nla_put_failure; | |
5753 | if (nl80211_msg_put_channel(msg, channel_before)) | |
5754 | goto nla_put_failure; | |
5755 | nla_nest_end(msg, nl_freq); | |
5756 | ||
5757 | /* After */ | |
5758 | nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); | |
5759 | if (!nl_freq) | |
5760 | goto nla_put_failure; | |
5761 | if (nl80211_msg_put_channel(msg, channel_after)) | |
5762 | goto nla_put_failure; | |
5763 | nla_nest_end(msg, nl_freq); | |
5764 | ||
5765 | if (genlmsg_end(msg, hdr) < 0) { | |
5766 | nlmsg_free(msg); | |
5767 | return; | |
5768 | } | |
5769 | ||
5770 | rcu_read_lock(); | |
5771 | genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, | |
5772 | GFP_ATOMIC); | |
5773 | rcu_read_unlock(); | |
5774 | ||
5775 | return; | |
5776 | ||
5777 | nla_put_failure: | |
5778 | genlmsg_cancel(msg, hdr); | |
5779 | nlmsg_free(msg); | |
5780 | } | |
5781 | ||
5782 | static void nl80211_send_remain_on_chan_event( | |
5783 | int cmd, struct cfg80211_registered_device *rdev, | |
5784 | struct net_device *netdev, u64 cookie, | |
5785 | struct ieee80211_channel *chan, | |
5786 | enum nl80211_channel_type channel_type, | |
5787 | unsigned int duration, gfp_t gfp) | |
5788 | { | |
5789 | struct sk_buff *msg; | |
5790 | void *hdr; | |
5791 | ||
5792 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5793 | if (!msg) | |
5794 | return; | |
5795 | ||
5796 | hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); | |
5797 | if (!hdr) { | |
5798 | nlmsg_free(msg); | |
5799 | return; | |
5800 | } | |
5801 | ||
5802 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5803 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5804 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq); | |
5805 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type); | |
5806 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); | |
5807 | ||
5808 | if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL) | |
5809 | NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); | |
5810 | ||
5811 | if (genlmsg_end(msg, hdr) < 0) { | |
5812 | nlmsg_free(msg); | |
5813 | return; | |
5814 | } | |
5815 | ||
5816 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5817 | nl80211_mlme_mcgrp.id, gfp); | |
5818 | return; | |
5819 | ||
5820 | nla_put_failure: | |
5821 | genlmsg_cancel(msg, hdr); | |
5822 | nlmsg_free(msg); | |
5823 | } | |
5824 | ||
5825 | void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev, | |
5826 | struct net_device *netdev, u64 cookie, | |
5827 | struct ieee80211_channel *chan, | |
5828 | enum nl80211_channel_type channel_type, | |
5829 | unsigned int duration, gfp_t gfp) | |
5830 | { | |
5831 | nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, | |
5832 | rdev, netdev, cookie, chan, | |
5833 | channel_type, duration, gfp); | |
5834 | } | |
5835 | ||
5836 | void nl80211_send_remain_on_channel_cancel( | |
5837 | struct cfg80211_registered_device *rdev, struct net_device *netdev, | |
5838 | u64 cookie, struct ieee80211_channel *chan, | |
5839 | enum nl80211_channel_type channel_type, gfp_t gfp) | |
5840 | { | |
5841 | nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, | |
5842 | rdev, netdev, cookie, chan, | |
5843 | channel_type, 0, gfp); | |
5844 | } | |
5845 | ||
5846 | void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, | |
5847 | struct net_device *dev, const u8 *mac_addr, | |
5848 | struct station_info *sinfo, gfp_t gfp) | |
5849 | { | |
5850 | struct sk_buff *msg; | |
5851 | ||
5852 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); | |
5853 | if (!msg) | |
5854 | return; | |
5855 | ||
5856 | if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) { | |
5857 | nlmsg_free(msg); | |
5858 | return; | |
5859 | } | |
5860 | ||
5861 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5862 | nl80211_mlme_mcgrp.id, gfp); | |
5863 | } | |
5864 | ||
5865 | int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, | |
5866 | struct net_device *netdev, u32 nlpid, | |
5867 | int freq, const u8 *buf, size_t len, gfp_t gfp) | |
5868 | { | |
5869 | struct sk_buff *msg; | |
5870 | void *hdr; | |
5871 | int err; | |
5872 | ||
5873 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5874 | if (!msg) | |
5875 | return -ENOMEM; | |
5876 | ||
5877 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); | |
5878 | if (!hdr) { | |
5879 | nlmsg_free(msg); | |
5880 | return -ENOMEM; | |
5881 | } | |
5882 | ||
5883 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5884 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5885 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); | |
5886 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); | |
5887 | ||
5888 | err = genlmsg_end(msg, hdr); | |
5889 | if (err < 0) { | |
5890 | nlmsg_free(msg); | |
5891 | return err; | |
5892 | } | |
5893 | ||
5894 | err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid); | |
5895 | if (err < 0) | |
5896 | return err; | |
5897 | return 0; | |
5898 | ||
5899 | nla_put_failure: | |
5900 | genlmsg_cancel(msg, hdr); | |
5901 | nlmsg_free(msg); | |
5902 | return -ENOBUFS; | |
5903 | } | |
5904 | ||
5905 | void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev, | |
5906 | struct net_device *netdev, u64 cookie, | |
5907 | const u8 *buf, size_t len, bool ack, | |
5908 | gfp_t gfp) | |
5909 | { | |
5910 | struct sk_buff *msg; | |
5911 | void *hdr; | |
5912 | ||
5913 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); | |
5914 | if (!msg) | |
5915 | return; | |
5916 | ||
5917 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); | |
5918 | if (!hdr) { | |
5919 | nlmsg_free(msg); | |
5920 | return; | |
5921 | } | |
5922 | ||
5923 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5924 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5925 | NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); | |
5926 | NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); | |
5927 | if (ack) | |
5928 | NLA_PUT_FLAG(msg, NL80211_ATTR_ACK); | |
5929 | ||
5930 | if (genlmsg_end(msg, hdr) < 0) { | |
5931 | nlmsg_free(msg); | |
5932 | return; | |
5933 | } | |
5934 | ||
5935 | genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); | |
5936 | return; | |
5937 | ||
5938 | nla_put_failure: | |
5939 | genlmsg_cancel(msg, hdr); | |
5940 | nlmsg_free(msg); | |
5941 | } | |
5942 | ||
5943 | void | |
5944 | nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, | |
5945 | struct net_device *netdev, | |
5946 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
5947 | gfp_t gfp) | |
5948 | { | |
5949 | struct sk_buff *msg; | |
5950 | struct nlattr *pinfoattr; | |
5951 | void *hdr; | |
5952 | ||
5953 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); | |
5954 | if (!msg) | |
5955 | return; | |
5956 | ||
5957 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); | |
5958 | if (!hdr) { | |
5959 | nlmsg_free(msg); | |
5960 | return; | |
5961 | } | |
5962 | ||
5963 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
5964 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
5965 | ||
5966 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); | |
5967 | if (!pinfoattr) | |
5968 | goto nla_put_failure; | |
5969 | ||
5970 | NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, | |
5971 | rssi_event); | |
5972 | ||
5973 | nla_nest_end(msg, pinfoattr); | |
5974 | ||
5975 | if (genlmsg_end(msg, hdr) < 0) { | |
5976 | nlmsg_free(msg); | |
5977 | return; | |
5978 | } | |
5979 | ||
5980 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
5981 | nl80211_mlme_mcgrp.id, gfp); | |
5982 | return; | |
5983 | ||
5984 | nla_put_failure: | |
5985 | genlmsg_cancel(msg, hdr); | |
5986 | nlmsg_free(msg); | |
5987 | } | |
5988 | ||
5989 | void | |
5990 | nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, | |
5991 | struct net_device *netdev, const u8 *peer, | |
5992 | u32 num_packets, gfp_t gfp) | |
5993 | { | |
5994 | struct sk_buff *msg; | |
5995 | struct nlattr *pinfoattr; | |
5996 | void *hdr; | |
5997 | ||
5998 | msg = nlmsg_new(NLMSG_GOODSIZE, gfp); | |
5999 | if (!msg) | |
6000 | return; | |
6001 | ||
6002 | hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); | |
6003 | if (!hdr) { | |
6004 | nlmsg_free(msg); | |
6005 | return; | |
6006 | } | |
6007 | ||
6008 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); | |
6009 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); | |
6010 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); | |
6011 | ||
6012 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); | |
6013 | if (!pinfoattr) | |
6014 | goto nla_put_failure; | |
6015 | ||
6016 | NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets); | |
6017 | ||
6018 | nla_nest_end(msg, pinfoattr); | |
6019 | ||
6020 | if (genlmsg_end(msg, hdr) < 0) { | |
6021 | nlmsg_free(msg); | |
6022 | return; | |
6023 | } | |
6024 | ||
6025 | genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, | |
6026 | nl80211_mlme_mcgrp.id, gfp); | |
6027 | return; | |
6028 | ||
6029 | nla_put_failure: | |
6030 | genlmsg_cancel(msg, hdr); | |
6031 | nlmsg_free(msg); | |
6032 | } | |
6033 | ||
6034 | static int nl80211_netlink_notify(struct notifier_block * nb, | |
6035 | unsigned long state, | |
6036 | void *_notify) | |
6037 | { | |
6038 | struct netlink_notify *notify = _notify; | |
6039 | struct cfg80211_registered_device *rdev; | |
6040 | struct wireless_dev *wdev; | |
6041 | ||
6042 | if (state != NETLINK_URELEASE) | |
6043 | return NOTIFY_DONE; | |
6044 | ||
6045 | rcu_read_lock(); | |
6046 | ||
6047 | list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) | |
6048 | list_for_each_entry_rcu(wdev, &rdev->netdev_list, list) | |
6049 | cfg80211_mlme_unregister_socket(wdev, notify->pid); | |
6050 | ||
6051 | rcu_read_unlock(); | |
6052 | ||
6053 | return NOTIFY_DONE; | |
6054 | } | |
6055 | ||
6056 | static struct notifier_block nl80211_netlink_notifier = { | |
6057 | .notifier_call = nl80211_netlink_notify, | |
6058 | }; | |
6059 | ||
6060 | /* initialisation/exit functions */ | |
6061 | ||
6062 | int nl80211_init(void) | |
6063 | { | |
6064 | int err; | |
6065 | ||
6066 | err = genl_register_family_with_ops(&nl80211_fam, | |
6067 | nl80211_ops, ARRAY_SIZE(nl80211_ops)); | |
6068 | if (err) | |
6069 | return err; | |
6070 | ||
6071 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
6072 | if (err) | |
6073 | goto err_out; | |
6074 | ||
6075 | err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); | |
6076 | if (err) | |
6077 | goto err_out; | |
6078 | ||
6079 | err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); | |
6080 | if (err) | |
6081 | goto err_out; | |
6082 | ||
6083 | err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); | |
6084 | if (err) | |
6085 | goto err_out; | |
6086 | ||
6087 | #ifdef CONFIG_NL80211_TESTMODE | |
6088 | err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); | |
6089 | if (err) | |
6090 | goto err_out; | |
6091 | #endif | |
6092 | ||
6093 | err = netlink_register_notifier(&nl80211_netlink_notifier); | |
6094 | if (err) | |
6095 | goto err_out; | |
6096 | ||
6097 | return 0; | |
6098 | err_out: | |
6099 | genl_unregister_family(&nl80211_fam); | |
6100 | return err; | |
6101 | } | |
6102 | ||
6103 | void nl80211_exit(void) | |
6104 | { | |
6105 | netlink_unregister_notifier(&nl80211_netlink_notifier); | |
6106 | genl_unregister_family(&nl80211_fam); | |
6107 | } |