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Merge tag 'fixes-3.10-4' of git://git.infradead.org/users/jcooper/linux into fixes
[linux-2.6.git] / net / wireless / nl80211.c
blobdfdb5e6432110f15afa4730e9fae0f05d7b011e8
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 <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = "nl80211", /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* returns ERR_PTR values */
51 static struct wireless_dev *
52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53 {
54 struct cfg80211_registered_device *rdev;
55 struct wireless_dev *result = NULL;
56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
58 u64 wdev_id;
59 int wiphy_idx = -1;
60 int ifidx = -1;
61
62 assert_cfg80211_lock();
63
64 if (!have_ifidx && !have_wdev_id)
65 return ERR_PTR(-EINVAL);
66
67 if (have_ifidx)
68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
69 if (have_wdev_id) {
70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
71 wiphy_idx = wdev_id >> 32;
72 }
73
74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
75 struct wireless_dev *wdev;
76
77 if (wiphy_net(&rdev->wiphy) != netns)
78 continue;
79
80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
81 continue;
82
83 mutex_lock(&rdev->devlist_mtx);
84 list_for_each_entry(wdev, &rdev->wdev_list, list) {
85 if (have_ifidx && wdev->netdev &&
86 wdev->netdev->ifindex == ifidx) {
87 result = wdev;
88 break;
89 }
90 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
91 result = wdev;
92 break;
93 }
94 }
95 mutex_unlock(&rdev->devlist_mtx);
96
97 if (result)
98 break;
99 }
100
101 if (result)
102 return result;
103 return ERR_PTR(-ENODEV);
104 }
105
106 static struct cfg80211_registered_device *
107 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
108 {
109 struct cfg80211_registered_device *rdev = NULL, *tmp;
110 struct net_device *netdev;
111
112 assert_cfg80211_lock();
113
114 if (!attrs[NL80211_ATTR_WIPHY] &&
115 !attrs[NL80211_ATTR_IFINDEX] &&
116 !attrs[NL80211_ATTR_WDEV])
117 return ERR_PTR(-EINVAL);
118
119 if (attrs[NL80211_ATTR_WIPHY])
120 rdev = cfg80211_rdev_by_wiphy_idx(
121 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
122
123 if (attrs[NL80211_ATTR_WDEV]) {
124 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
125 struct wireless_dev *wdev;
126 bool found = false;
127
128 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
129 if (tmp) {
130 /* make sure wdev exists */
131 mutex_lock(&tmp->devlist_mtx);
132 list_for_each_entry(wdev, &tmp->wdev_list, list) {
133 if (wdev->identifier != (u32)wdev_id)
134 continue;
135 found = true;
136 break;
137 }
138 mutex_unlock(&tmp->devlist_mtx);
139
140 if (!found)
141 tmp = NULL;
142
143 if (rdev && tmp != rdev)
144 return ERR_PTR(-EINVAL);
145 rdev = tmp;
146 }
147 }
148
149 if (attrs[NL80211_ATTR_IFINDEX]) {
150 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
151 netdev = dev_get_by_index(netns, ifindex);
152 if (netdev) {
153 if (netdev->ieee80211_ptr)
154 tmp = wiphy_to_dev(
155 netdev->ieee80211_ptr->wiphy);
156 else
157 tmp = NULL;
158
159 dev_put(netdev);
160
161 /* not wireless device -- return error */
162 if (!tmp)
163 return ERR_PTR(-EINVAL);
164
165 /* mismatch -- return error */
166 if (rdev && tmp != rdev)
167 return ERR_PTR(-EINVAL);
168
169 rdev = tmp;
170 }
171 }
172
173 if (!rdev)
174 return ERR_PTR(-ENODEV);
175
176 if (netns != wiphy_net(&rdev->wiphy))
177 return ERR_PTR(-ENODEV);
178
179 return rdev;
180 }
181
182 /*
183 * This function returns a pointer to the driver
184 * that the genl_info item that is passed refers to.
185 * If successful, it returns non-NULL and also locks
186 * the driver's mutex!
187 *
188 * This means that you need to call cfg80211_unlock_rdev()
189 * before being allowed to acquire &cfg80211_mutex!
190 *
191 * This is necessary because we need to lock the global
192 * mutex to get an item off the list safely, and then
193 * we lock the rdev mutex so it doesn't go away under us.
194 *
195 * We don't want to keep cfg80211_mutex locked
196 * for all the time in order to allow requests on
197 * other interfaces to go through at the same time.
198 *
199 * The result of this can be a PTR_ERR and hence must
200 * be checked with IS_ERR() for errors.
201 */
202 static struct cfg80211_registered_device *
203 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
204 {
205 struct cfg80211_registered_device *rdev;
206
207 mutex_lock(&cfg80211_mutex);
208 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
209
210 /* if it is not an error we grab the lock on
211 * it to assure it won't be going away while
212 * we operate on it */
213 if (!IS_ERR(rdev))
214 mutex_lock(&rdev->mtx);
215
216 mutex_unlock(&cfg80211_mutex);
217
218 return rdev;
219 }
220
221 /* policy for the attributes */
222 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
223 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
224 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
225 .len = 20-1 },
226 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
227
228 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
231 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
232 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
233
234 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
235 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
236 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
237 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
238 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
239
240 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
241 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
242 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
243
244 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
245 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
246
247 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
248 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
249 .len = WLAN_MAX_KEY_LEN },
250 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
251 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
252 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
253 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
254 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
255
256 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
257 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
258 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
259 .len = IEEE80211_MAX_DATA_LEN },
260 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
261 .len = IEEE80211_MAX_DATA_LEN },
262 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
263 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
264 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
265 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
266 .len = NL80211_MAX_SUPP_RATES },
267 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
268 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
269 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
270 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
271 .len = IEEE80211_MAX_MESH_ID_LEN },
272 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
273
274 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
275 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
276
277 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
278 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
279 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
280 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
281 .len = NL80211_MAX_SUPP_RATES },
282 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
283
284 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
285 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
286
287 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
288
289 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
290 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
291 .len = IEEE80211_MAX_DATA_LEN },
292 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
293 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
294
295 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
296 .len = IEEE80211_MAX_SSID_LEN },
297 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
298 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
299 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
300 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
301 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
302 [NL80211_ATTR_STA_FLAGS2] = {
303 .len = sizeof(struct nl80211_sta_flag_update),
304 },
305 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
306 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
307 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
308 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
309 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
310 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
311 [NL80211_ATTR_PID] = { .type = NLA_U32 },
312 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
313 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
314 .len = WLAN_PMKID_LEN },
315 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
316 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
317 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
318 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
319 .len = IEEE80211_MAX_DATA_LEN },
320 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
321 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
323 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
324 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
325 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
326 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
327 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
328 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
329 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
330 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
331 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
332 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
333 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
334 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
335 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
336 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
337 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
338 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
339 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
340 .len = IEEE80211_MAX_DATA_LEN },
341 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_DATA_LEN },
343 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
344 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
345 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
346 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
347 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
348 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
349 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
350 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
351 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
352 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
353 .len = IEEE80211_MAX_DATA_LEN },
354 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
355 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
356 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
357 .len = NL80211_HT_CAPABILITY_LEN
358 },
359 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
360 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
361 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
362 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
363 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
364 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
366 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
367 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
368 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
369 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
370 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
371 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
372 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
373 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
374 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
375 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
376 .len = NL80211_VHT_CAPABILITY_LEN,
377 },
378 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
379 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
380 .len = IEEE80211_MAX_DATA_LEN },
381 };
382
383 /* policy for the key attributes */
384 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
385 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
386 [NL80211_KEY_IDX] = { .type = NLA_U8 },
387 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
388 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
389 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
390 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
391 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
392 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
393 };
394
395 /* policy for the key default flags */
396 static const struct nla_policy
397 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
398 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
399 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
400 };
401
402 /* policy for WoWLAN attributes */
403 static const struct nla_policy
404 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
405 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
406 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
407 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
408 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
409 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
410 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
411 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
412 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
413 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
414 };
415
416 static const struct nla_policy
417 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
418 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
419 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
420 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
421 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
422 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
423 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
424 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
425 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
426 },
427 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
428 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
429 },
430 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
431 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
432 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
433 };
434
435 /* policy for GTK rekey offload attributes */
436 static const struct nla_policy
437 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
438 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
439 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
440 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
441 };
442
443 static const struct nla_policy
444 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
445 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
446 .len = IEEE80211_MAX_SSID_LEN },
447 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
448 };
449
450 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
451 struct netlink_callback *cb,
452 struct cfg80211_registered_device **rdev,
453 struct wireless_dev **wdev)
454 {
455 int err;
456
457 rtnl_lock();
458 mutex_lock(&cfg80211_mutex);
459
460 if (!cb->args[0]) {
461 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
462 nl80211_fam.attrbuf, nl80211_fam.maxattr,
463 nl80211_policy);
464 if (err)
465 goto out_unlock;
466
467 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
468 nl80211_fam.attrbuf);
469 if (IS_ERR(*wdev)) {
470 err = PTR_ERR(*wdev);
471 goto out_unlock;
472 }
473 *rdev = wiphy_to_dev((*wdev)->wiphy);
474 cb->args[0] = (*rdev)->wiphy_idx;
475 cb->args[1] = (*wdev)->identifier;
476 } else {
477 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
478 struct wireless_dev *tmp;
479
480 if (!wiphy) {
481 err = -ENODEV;
482 goto out_unlock;
483 }
484 *rdev = wiphy_to_dev(wiphy);
485 *wdev = NULL;
486
487 mutex_lock(&(*rdev)->devlist_mtx);
488 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
489 if (tmp->identifier == cb->args[1]) {
490 *wdev = tmp;
491 break;
492 }
493 }
494 mutex_unlock(&(*rdev)->devlist_mtx);
495
496 if (!*wdev) {
497 err = -ENODEV;
498 goto out_unlock;
499 }
500 }
501
502 cfg80211_lock_rdev(*rdev);
503
504 mutex_unlock(&cfg80211_mutex);
505 return 0;
506 out_unlock:
507 mutex_unlock(&cfg80211_mutex);
508 rtnl_unlock();
509 return err;
510 }
511
512 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
513 {
514 cfg80211_unlock_rdev(rdev);
515 rtnl_unlock();
516 }
517
518 /* IE validation */
519 static bool is_valid_ie_attr(const struct nlattr *attr)
520 {
521 const u8 *pos;
522 int len;
523
524 if (!attr)
525 return true;
526
527 pos = nla_data(attr);
528 len = nla_len(attr);
529
530 while (len) {
531 u8 elemlen;
532
533 if (len < 2)
534 return false;
535 len -= 2;
536
537 elemlen = pos[1];
538 if (elemlen > len)
539 return false;
540
541 len -= elemlen;
542 pos += 2 + elemlen;
543 }
544
545 return true;
546 }
547
548 /* message building helper */
549 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
550 int flags, u8 cmd)
551 {
552 /* since there is no private header just add the generic one */
553 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
554 }
555
556 static int nl80211_msg_put_channel(struct sk_buff *msg,
557 struct ieee80211_channel *chan,
558 bool large)
559 {
560 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
561 chan->center_freq))
562 goto nla_put_failure;
563
564 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
565 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
566 goto nla_put_failure;
567 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
568 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
569 goto nla_put_failure;
570 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
571 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
572 goto nla_put_failure;
573 if (chan->flags & IEEE80211_CHAN_RADAR) {
574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
575 goto nla_put_failure;
576 if (large) {
577 u32 time;
578
579 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
580
581 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
582 chan->dfs_state))
583 goto nla_put_failure;
584 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
585 time))
586 goto nla_put_failure;
587 }
588 }
589
590 if (large) {
591 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
592 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
593 goto nla_put_failure;
594 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
595 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
596 goto nla_put_failure;
597 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
599 goto nla_put_failure;
600 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
602 goto nla_put_failure;
603 }
604
605 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
606 DBM_TO_MBM(chan->max_power)))
607 goto nla_put_failure;
608
609 return 0;
610
611 nla_put_failure:
612 return -ENOBUFS;
613 }
614
615 /* netlink command implementations */
616
617 struct key_parse {
618 struct key_params p;
619 int idx;
620 int type;
621 bool def, defmgmt;
622 bool def_uni, def_multi;
623 };
624
625 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
626 {
627 struct nlattr *tb[NL80211_KEY_MAX + 1];
628 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
629 nl80211_key_policy);
630 if (err)
631 return err;
632
633 k->def = !!tb[NL80211_KEY_DEFAULT];
634 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
635
636 if (k->def) {
637 k->def_uni = true;
638 k->def_multi = true;
639 }
640 if (k->defmgmt)
641 k->def_multi = true;
642
643 if (tb[NL80211_KEY_IDX])
644 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
645
646 if (tb[NL80211_KEY_DATA]) {
647 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
648 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
649 }
650
651 if (tb[NL80211_KEY_SEQ]) {
652 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
653 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
654 }
655
656 if (tb[NL80211_KEY_CIPHER])
657 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
658
659 if (tb[NL80211_KEY_TYPE]) {
660 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
661 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
662 return -EINVAL;
663 }
664
665 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
666 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
667 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
668 tb[NL80211_KEY_DEFAULT_TYPES],
669 nl80211_key_default_policy);
670 if (err)
671 return err;
672
673 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
674 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
675 }
676
677 return 0;
678 }
679
680 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
681 {
682 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
683 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
684 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
685 }
686
687 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
688 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
689 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
690 }
691
692 if (info->attrs[NL80211_ATTR_KEY_IDX])
693 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
694
695 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
696 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
697
698 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
699 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
700
701 if (k->def) {
702 k->def_uni = true;
703 k->def_multi = true;
704 }
705 if (k->defmgmt)
706 k->def_multi = true;
707
708 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
709 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
710 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
711 return -EINVAL;
712 }
713
714 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
715 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
716 int err = nla_parse_nested(
717 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
718 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
719 nl80211_key_default_policy);
720 if (err)
721 return err;
722
723 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
724 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
725 }
726
727 return 0;
728 }
729
730 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
731 {
732 int err;
733
734 memset(k, 0, sizeof(*k));
735 k->idx = -1;
736 k->type = -1;
737
738 if (info->attrs[NL80211_ATTR_KEY])
739 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
740 else
741 err = nl80211_parse_key_old(info, k);
742
743 if (err)
744 return err;
745
746 if (k->def && k->defmgmt)
747 return -EINVAL;
748
749 if (k->defmgmt) {
750 if (k->def_uni || !k->def_multi)
751 return -EINVAL;
752 }
753
754 if (k->idx != -1) {
755 if (k->defmgmt) {
756 if (k->idx < 4 || k->idx > 5)
757 return -EINVAL;
758 } else if (k->def) {
759 if (k->idx < 0 || k->idx > 3)
760 return -EINVAL;
761 } else {
762 if (k->idx < 0 || k->idx > 5)
763 return -EINVAL;
764 }
765 }
766
767 return 0;
768 }
769
770 static struct cfg80211_cached_keys *
771 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
772 struct nlattr *keys, bool *no_ht)
773 {
774 struct key_parse parse;
775 struct nlattr *key;
776 struct cfg80211_cached_keys *result;
777 int rem, err, def = 0;
778
779 result = kzalloc(sizeof(*result), GFP_KERNEL);
780 if (!result)
781 return ERR_PTR(-ENOMEM);
782
783 result->def = -1;
784 result->defmgmt = -1;
785
786 nla_for_each_nested(key, keys, rem) {
787 memset(&parse, 0, sizeof(parse));
788 parse.idx = -1;
789
790 err = nl80211_parse_key_new(key, &parse);
791 if (err)
792 goto error;
793 err = -EINVAL;
794 if (!parse.p.key)
795 goto error;
796 if (parse.idx < 0 || parse.idx > 4)
797 goto error;
798 if (parse.def) {
799 if (def)
800 goto error;
801 def = 1;
802 result->def = parse.idx;
803 if (!parse.def_uni || !parse.def_multi)
804 goto error;
805 } else if (parse.defmgmt)
806 goto error;
807 err = cfg80211_validate_key_settings(rdev, &parse.p,
808 parse.idx, false, NULL);
809 if (err)
810 goto error;
811 result->params[parse.idx].cipher = parse.p.cipher;
812 result->params[parse.idx].key_len = parse.p.key_len;
813 result->params[parse.idx].key = result->data[parse.idx];
814 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
815
816 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
817 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
818 if (no_ht)
819 *no_ht = true;
820 }
821 }
822
823 return result;
824 error:
825 kfree(result);
826 return ERR_PTR(err);
827 }
828
829 static int nl80211_key_allowed(struct wireless_dev *wdev)
830 {
831 ASSERT_WDEV_LOCK(wdev);
832
833 switch (wdev->iftype) {
834 case NL80211_IFTYPE_AP:
835 case NL80211_IFTYPE_AP_VLAN:
836 case NL80211_IFTYPE_P2P_GO:
837 case NL80211_IFTYPE_MESH_POINT:
838 break;
839 case NL80211_IFTYPE_ADHOC:
840 if (!wdev->current_bss)
841 return -ENOLINK;
842 break;
843 case NL80211_IFTYPE_STATION:
844 case NL80211_IFTYPE_P2P_CLIENT:
845 if (wdev->sme_state != CFG80211_SME_CONNECTED)
846 return -ENOLINK;
847 break;
848 default:
849 return -EINVAL;
850 }
851
852 return 0;
853 }
854
855 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
856 {
857 struct nlattr *nl_modes = nla_nest_start(msg, attr);
858 int i;
859
860 if (!nl_modes)
861 goto nla_put_failure;
862
863 i = 0;
864 while (ifmodes) {
865 if ((ifmodes & 1) && nla_put_flag(msg, i))
866 goto nla_put_failure;
867 ifmodes >>= 1;
868 i++;
869 }
870
871 nla_nest_end(msg, nl_modes);
872 return 0;
873
874 nla_put_failure:
875 return -ENOBUFS;
876 }
877
878 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
879 struct sk_buff *msg,
880 bool large)
881 {
882 struct nlattr *nl_combis;
883 int i, j;
884
885 nl_combis = nla_nest_start(msg,
886 NL80211_ATTR_INTERFACE_COMBINATIONS);
887 if (!nl_combis)
888 goto nla_put_failure;
889
890 for (i = 0; i < wiphy->n_iface_combinations; i++) {
891 const struct ieee80211_iface_combination *c;
892 struct nlattr *nl_combi, *nl_limits;
893
894 c = &wiphy->iface_combinations[i];
895
896 nl_combi = nla_nest_start(msg, i + 1);
897 if (!nl_combi)
898 goto nla_put_failure;
899
900 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
901 if (!nl_limits)
902 goto nla_put_failure;
903
904 for (j = 0; j < c->n_limits; j++) {
905 struct nlattr *nl_limit;
906
907 nl_limit = nla_nest_start(msg, j + 1);
908 if (!nl_limit)
909 goto nla_put_failure;
910 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
911 c->limits[j].max))
912 goto nla_put_failure;
913 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
914 c->limits[j].types))
915 goto nla_put_failure;
916 nla_nest_end(msg, nl_limit);
917 }
918
919 nla_nest_end(msg, nl_limits);
920
921 if (c->beacon_int_infra_match &&
922 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
923 goto nla_put_failure;
924 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
925 c->num_different_channels) ||
926 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
927 c->max_interfaces))
928 goto nla_put_failure;
929 if (large &&
930 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
931 c->radar_detect_widths))
932 goto nla_put_failure;
933
934 nla_nest_end(msg, nl_combi);
935 }
936
937 nla_nest_end(msg, nl_combis);
938
939 return 0;
940 nla_put_failure:
941 return -ENOBUFS;
942 }
943
944 #ifdef CONFIG_PM
945 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
946 struct sk_buff *msg)
947 {
948 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
949 struct nlattr *nl_tcp;
950
951 if (!tcp)
952 return 0;
953
954 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
955 if (!nl_tcp)
956 return -ENOBUFS;
957
958 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
959 tcp->data_payload_max))
960 return -ENOBUFS;
961
962 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
963 tcp->data_payload_max))
964 return -ENOBUFS;
965
966 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
967 return -ENOBUFS;
968
969 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
970 sizeof(*tcp->tok), tcp->tok))
971 return -ENOBUFS;
972
973 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
974 tcp->data_interval_max))
975 return -ENOBUFS;
976
977 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
978 tcp->wake_payload_max))
979 return -ENOBUFS;
980
981 nla_nest_end(msg, nl_tcp);
982 return 0;
983 }
984
985 static int nl80211_send_wowlan(struct sk_buff *msg,
986 struct cfg80211_registered_device *dev,
987 bool large)
988 {
989 struct nlattr *nl_wowlan;
990
991 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
992 return 0;
993
994 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
995 if (!nl_wowlan)
996 return -ENOBUFS;
997
998 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
999 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1000 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1001 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1002 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1003 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1004 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1005 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1006 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1007 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1008 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1009 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1010 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1011 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1012 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1013 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1014 return -ENOBUFS;
1015
1016 if (dev->wiphy.wowlan.n_patterns) {
1017 struct nl80211_wowlan_pattern_support pat = {
1018 .max_patterns = dev->wiphy.wowlan.n_patterns,
1019 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
1020 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
1021 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
1022 };
1023
1024 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1025 sizeof(pat), &pat))
1026 return -ENOBUFS;
1027 }
1028
1029 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1030 return -ENOBUFS;
1031
1032 nla_nest_end(msg, nl_wowlan);
1033
1034 return 0;
1035 }
1036 #endif
1037
1038 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1039 struct ieee80211_supported_band *sband)
1040 {
1041 struct nlattr *nl_rates, *nl_rate;
1042 struct ieee80211_rate *rate;
1043 int i;
1044
1045 /* add HT info */
1046 if (sband->ht_cap.ht_supported &&
1047 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1048 sizeof(sband->ht_cap.mcs),
1049 &sband->ht_cap.mcs) ||
1050 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1051 sband->ht_cap.cap) ||
1052 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1053 sband->ht_cap.ampdu_factor) ||
1054 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1055 sband->ht_cap.ampdu_density)))
1056 return -ENOBUFS;
1057
1058 /* add VHT info */
1059 if (sband->vht_cap.vht_supported &&
1060 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1061 sizeof(sband->vht_cap.vht_mcs),
1062 &sband->vht_cap.vht_mcs) ||
1063 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1064 sband->vht_cap.cap)))
1065 return -ENOBUFS;
1066
1067 /* add bitrates */
1068 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1069 if (!nl_rates)
1070 return -ENOBUFS;
1071
1072 for (i = 0; i < sband->n_bitrates; i++) {
1073 nl_rate = nla_nest_start(msg, i);
1074 if (!nl_rate)
1075 return -ENOBUFS;
1076
1077 rate = &sband->bitrates[i];
1078 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1079 rate->bitrate))
1080 return -ENOBUFS;
1081 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1082 nla_put_flag(msg,
1083 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1084 return -ENOBUFS;
1085
1086 nla_nest_end(msg, nl_rate);
1087 }
1088
1089 nla_nest_end(msg, nl_rates);
1090
1091 return 0;
1092 }
1093
1094 static int
1095 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1096 const struct ieee80211_txrx_stypes *mgmt_stypes)
1097 {
1098 u16 stypes;
1099 struct nlattr *nl_ftypes, *nl_ifs;
1100 enum nl80211_iftype ift;
1101 int i;
1102
1103 if (!mgmt_stypes)
1104 return 0;
1105
1106 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1107 if (!nl_ifs)
1108 return -ENOBUFS;
1109
1110 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1111 nl_ftypes = nla_nest_start(msg, ift);
1112 if (!nl_ftypes)
1113 return -ENOBUFS;
1114 i = 0;
1115 stypes = mgmt_stypes[ift].tx;
1116 while (stypes) {
1117 if ((stypes & 1) &&
1118 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1119 (i << 4) | IEEE80211_FTYPE_MGMT))
1120 return -ENOBUFS;
1121 stypes >>= 1;
1122 i++;
1123 }
1124 nla_nest_end(msg, nl_ftypes);
1125 }
1126
1127 nla_nest_end(msg, nl_ifs);
1128
1129 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1130 if (!nl_ifs)
1131 return -ENOBUFS;
1132
1133 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1134 nl_ftypes = nla_nest_start(msg, ift);
1135 if (!nl_ftypes)
1136 return -ENOBUFS;
1137 i = 0;
1138 stypes = mgmt_stypes[ift].rx;
1139 while (stypes) {
1140 if ((stypes & 1) &&
1141 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1142 (i << 4) | IEEE80211_FTYPE_MGMT))
1143 return -ENOBUFS;
1144 stypes >>= 1;
1145 i++;
1146 }
1147 nla_nest_end(msg, nl_ftypes);
1148 }
1149 nla_nest_end(msg, nl_ifs);
1150
1151 return 0;
1152 }
1153
1154 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1155 struct sk_buff *msg, u32 portid, u32 seq,
1156 int flags, bool split, long *split_start,
1157 long *band_start, long *chan_start)
1158 {
1159 void *hdr;
1160 struct nlattr *nl_bands, *nl_band;
1161 struct nlattr *nl_freqs, *nl_freq;
1162 struct nlattr *nl_cmds;
1163 enum ieee80211_band band;
1164 struct ieee80211_channel *chan;
1165 int i;
1166 const struct ieee80211_txrx_stypes *mgmt_stypes =
1167 dev->wiphy.mgmt_stypes;
1168 long start = 0, start_chan = 0, start_band = 0;
1169 u32 features;
1170
1171 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1172 if (!hdr)
1173 return -ENOBUFS;
1174
1175 /* allow always using the variables */
1176 if (!split) {
1177 split_start = &start;
1178 band_start = &start_band;
1179 chan_start = &start_chan;
1180 }
1181
1182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1183 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1184 wiphy_name(&dev->wiphy)) ||
1185 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1186 cfg80211_rdev_list_generation))
1187 goto nla_put_failure;
1188
1189 switch (*split_start) {
1190 case 0:
1191 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1192 dev->wiphy.retry_short) ||
1193 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1194 dev->wiphy.retry_long) ||
1195 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1196 dev->wiphy.frag_threshold) ||
1197 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1198 dev->wiphy.rts_threshold) ||
1199 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1200 dev->wiphy.coverage_class) ||
1201 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1202 dev->wiphy.max_scan_ssids) ||
1203 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1204 dev->wiphy.max_sched_scan_ssids) ||
1205 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1206 dev->wiphy.max_scan_ie_len) ||
1207 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1208 dev->wiphy.max_sched_scan_ie_len) ||
1209 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1210 dev->wiphy.max_match_sets))
1211 goto nla_put_failure;
1212
1213 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1215 goto nla_put_failure;
1216 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1218 goto nla_put_failure;
1219 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1220 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1221 goto nla_put_failure;
1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1223 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1224 goto nla_put_failure;
1225 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1226 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1227 goto nla_put_failure;
1228 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1229 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1230 goto nla_put_failure;
1231
1232 (*split_start)++;
1233 if (split)
1234 break;
1235 case 1:
1236 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1237 sizeof(u32) * dev->wiphy.n_cipher_suites,
1238 dev->wiphy.cipher_suites))
1239 goto nla_put_failure;
1240
1241 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1242 dev->wiphy.max_num_pmkids))
1243 goto nla_put_failure;
1244
1245 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1246 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1247 goto nla_put_failure;
1248
1249 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1250 dev->wiphy.available_antennas_tx) ||
1251 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1252 dev->wiphy.available_antennas_rx))
1253 goto nla_put_failure;
1254
1255 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1256 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1257 dev->wiphy.probe_resp_offload))
1258 goto nla_put_failure;
1259
1260 if ((dev->wiphy.available_antennas_tx ||
1261 dev->wiphy.available_antennas_rx) &&
1262 dev->ops->get_antenna) {
1263 u32 tx_ant = 0, rx_ant = 0;
1264 int res;
1265 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1266 if (!res) {
1267 if (nla_put_u32(msg,
1268 NL80211_ATTR_WIPHY_ANTENNA_TX,
1269 tx_ant) ||
1270 nla_put_u32(msg,
1271 NL80211_ATTR_WIPHY_ANTENNA_RX,
1272 rx_ant))
1273 goto nla_put_failure;
1274 }
1275 }
1276
1277 (*split_start)++;
1278 if (split)
1279 break;
1280 case 2:
1281 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1282 dev->wiphy.interface_modes))
1283 goto nla_put_failure;
1284 (*split_start)++;
1285 if (split)
1286 break;
1287 case 3:
1288 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1289 if (!nl_bands)
1290 goto nla_put_failure;
1291
1292 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1293 struct ieee80211_supported_band *sband;
1294
1295 sband = dev->wiphy.bands[band];
1296
1297 if (!sband)
1298 continue;
1299
1300 nl_band = nla_nest_start(msg, band);
1301 if (!nl_band)
1302 goto nla_put_failure;
1303
1304 switch (*chan_start) {
1305 case 0:
1306 if (nl80211_send_band_rateinfo(msg, sband))
1307 goto nla_put_failure;
1308 (*chan_start)++;
1309 if (split)
1310 break;
1311 default:
1312 /* add frequencies */
1313 nl_freqs = nla_nest_start(
1314 msg, NL80211_BAND_ATTR_FREQS);
1315 if (!nl_freqs)
1316 goto nla_put_failure;
1317
1318 for (i = *chan_start - 1;
1319 i < sband->n_channels;
1320 i++) {
1321 nl_freq = nla_nest_start(msg, i);
1322 if (!nl_freq)
1323 goto nla_put_failure;
1324
1325 chan = &sband->channels[i];
1326
1327 if (nl80211_msg_put_channel(msg, chan,
1328 split))
1329 goto nla_put_failure;
1330
1331 nla_nest_end(msg, nl_freq);
1332 if (split)
1333 break;
1334 }
1335 if (i < sband->n_channels)
1336 *chan_start = i + 2;
1337 else
1338 *chan_start = 0;
1339 nla_nest_end(msg, nl_freqs);
1340 }
1341
1342 nla_nest_end(msg, nl_band);
1343
1344 if (split) {
1345 /* start again here */
1346 if (*chan_start)
1347 band--;
1348 break;
1349 }
1350 }
1351 nla_nest_end(msg, nl_bands);
1352
1353 if (band < IEEE80211_NUM_BANDS)
1354 *band_start = band + 1;
1355 else
1356 *band_start = 0;
1357
1358 /* if bands & channels are done, continue outside */
1359 if (*band_start == 0 && *chan_start == 0)
1360 (*split_start)++;
1361 if (split)
1362 break;
1363 case 4:
1364 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1365 if (!nl_cmds)
1366 goto nla_put_failure;
1367
1368 i = 0;
1369 #define CMD(op, n) \
1370 do { \
1371 if (dev->ops->op) { \
1372 i++; \
1373 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1374 goto nla_put_failure; \
1375 } \
1376 } while (0)
1377
1378 CMD(add_virtual_intf, NEW_INTERFACE);
1379 CMD(change_virtual_intf, SET_INTERFACE);
1380 CMD(add_key, NEW_KEY);
1381 CMD(start_ap, START_AP);
1382 CMD(add_station, NEW_STATION);
1383 CMD(add_mpath, NEW_MPATH);
1384 CMD(update_mesh_config, SET_MESH_CONFIG);
1385 CMD(change_bss, SET_BSS);
1386 CMD(auth, AUTHENTICATE);
1387 CMD(assoc, ASSOCIATE);
1388 CMD(deauth, DEAUTHENTICATE);
1389 CMD(disassoc, DISASSOCIATE);
1390 CMD(join_ibss, JOIN_IBSS);
1391 CMD(join_mesh, JOIN_MESH);
1392 CMD(set_pmksa, SET_PMKSA);
1393 CMD(del_pmksa, DEL_PMKSA);
1394 CMD(flush_pmksa, FLUSH_PMKSA);
1395 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1396 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1397 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1398 CMD(mgmt_tx, FRAME);
1399 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1400 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1401 i++;
1402 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1403 goto nla_put_failure;
1404 }
1405 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1406 dev->ops->join_mesh) {
1407 i++;
1408 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1409 goto nla_put_failure;
1410 }
1411 CMD(set_wds_peer, SET_WDS_PEER);
1412 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1413 CMD(tdls_mgmt, TDLS_MGMT);
1414 CMD(tdls_oper, TDLS_OPER);
1415 }
1416 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1417 CMD(sched_scan_start, START_SCHED_SCAN);
1418 CMD(probe_client, PROBE_CLIENT);
1419 CMD(set_noack_map, SET_NOACK_MAP);
1420 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1421 i++;
1422 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1423 goto nla_put_failure;
1424 }
1425 CMD(start_p2p_device, START_P2P_DEVICE);
1426 CMD(set_mcast_rate, SET_MCAST_RATE);
1427 if (split) {
1428 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1429 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1430 }
1431
1432 #ifdef CONFIG_NL80211_TESTMODE
1433 CMD(testmode_cmd, TESTMODE);
1434 #endif
1435
1436 #undef CMD
1437
1438 if (dev->ops->connect || dev->ops->auth) {
1439 i++;
1440 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1441 goto nla_put_failure;
1442 }
1443
1444 if (dev->ops->disconnect || dev->ops->deauth) {
1445 i++;
1446 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1447 goto nla_put_failure;
1448 }
1449
1450 nla_nest_end(msg, nl_cmds);
1451 (*split_start)++;
1452 if (split)
1453 break;
1454 case 5:
1455 if (dev->ops->remain_on_channel &&
1456 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1457 nla_put_u32(msg,
1458 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1459 dev->wiphy.max_remain_on_channel_duration))
1460 goto nla_put_failure;
1461
1462 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1463 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1464 goto nla_put_failure;
1465
1466 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1467 goto nla_put_failure;
1468 (*split_start)++;
1469 if (split)
1470 break;
1471 case 6:
1472 #ifdef CONFIG_PM
1473 if (nl80211_send_wowlan(msg, dev, split))
1474 goto nla_put_failure;
1475 (*split_start)++;
1476 if (split)
1477 break;
1478 #else
1479 (*split_start)++;
1480 #endif
1481 case 7:
1482 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1483 dev->wiphy.software_iftypes))
1484 goto nla_put_failure;
1485
1486 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1487 goto nla_put_failure;
1488
1489 (*split_start)++;
1490 if (split)
1491 break;
1492 case 8:
1493 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1494 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1495 dev->wiphy.ap_sme_capa))
1496 goto nla_put_failure;
1497
1498 features = dev->wiphy.features;
1499 /*
1500 * We can only add the per-channel limit information if the
1501 * dump is split, otherwise it makes it too big. Therefore
1502 * only advertise it in that case.
1503 */
1504 if (split)
1505 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1506 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1507 goto nla_put_failure;
1508
1509 if (dev->wiphy.ht_capa_mod_mask &&
1510 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1511 sizeof(*dev->wiphy.ht_capa_mod_mask),
1512 dev->wiphy.ht_capa_mod_mask))
1513 goto nla_put_failure;
1514
1515 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1516 dev->wiphy.max_acl_mac_addrs &&
1517 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1518 dev->wiphy.max_acl_mac_addrs))
1519 goto nla_put_failure;
1520
1521 /*
1522 * Any information below this point is only available to
1523 * applications that can deal with it being split. This
1524 * helps ensure that newly added capabilities don't break
1525 * older tools by overrunning their buffers.
1526 *
1527 * We still increment split_start so that in the split
1528 * case we'll continue with more data in the next round,
1529 * but break unconditionally so unsplit data stops here.
1530 */
1531 (*split_start)++;
1532 break;
1533 case 9:
1534 if (dev->wiphy.extended_capabilities &&
1535 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1536 dev->wiphy.extended_capabilities_len,
1537 dev->wiphy.extended_capabilities) ||
1538 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1539 dev->wiphy.extended_capabilities_len,
1540 dev->wiphy.extended_capabilities_mask)))
1541 goto nla_put_failure;
1542
1543 if (dev->wiphy.vht_capa_mod_mask &&
1544 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1545 sizeof(*dev->wiphy.vht_capa_mod_mask),
1546 dev->wiphy.vht_capa_mod_mask))
1547 goto nla_put_failure;
1548
1549 /* done */
1550 *split_start = 0;
1551 break;
1552 }
1553 return genlmsg_end(msg, hdr);
1554
1555 nla_put_failure:
1556 genlmsg_cancel(msg, hdr);
1557 return -EMSGSIZE;
1558 }
1559
1560 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1561 {
1562 int idx = 0, ret;
1563 int start = cb->args[0];
1564 struct cfg80211_registered_device *dev;
1565 s64 filter_wiphy = -1;
1566 bool split = false;
1567 struct nlattr **tb = nl80211_fam.attrbuf;
1568 int res;
1569
1570 mutex_lock(&cfg80211_mutex);
1571 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1572 tb, nl80211_fam.maxattr, nl80211_policy);
1573 if (res == 0) {
1574 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1575 if (tb[NL80211_ATTR_WIPHY])
1576 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1577 if (tb[NL80211_ATTR_WDEV])
1578 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1579 if (tb[NL80211_ATTR_IFINDEX]) {
1580 struct net_device *netdev;
1581 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1582
1583 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1584 if (!netdev) {
1585 mutex_unlock(&cfg80211_mutex);
1586 return -ENODEV;
1587 }
1588 if (netdev->ieee80211_ptr) {
1589 dev = wiphy_to_dev(
1590 netdev->ieee80211_ptr->wiphy);
1591 filter_wiphy = dev->wiphy_idx;
1592 }
1593 dev_put(netdev);
1594 }
1595 }
1596
1597 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1598 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1599 continue;
1600 if (++idx <= start)
1601 continue;
1602 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1603 continue;
1604 /* attempt to fit multiple wiphy data chunks into the skb */
1605 do {
1606 ret = nl80211_send_wiphy(dev, skb,
1607 NETLINK_CB(cb->skb).portid,
1608 cb->nlh->nlmsg_seq,
1609 NLM_F_MULTI,
1610 split, &cb->args[1],
1611 &cb->args[2],
1612 &cb->args[3]);
1613 if (ret < 0) {
1614 /*
1615 * If sending the wiphy data didn't fit (ENOBUFS
1616 * or EMSGSIZE returned), this SKB is still
1617 * empty (so it's not too big because another
1618 * wiphy dataset is already in the skb) and
1619 * we've not tried to adjust the dump allocation
1620 * yet ... then adjust the alloc size to be
1621 * bigger, and return 1 but with the empty skb.
1622 * This results in an empty message being RX'ed
1623 * in userspace, but that is ignored.
1624 *
1625 * We can then retry with the larger buffer.
1626 */
1627 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1628 !skb->len &&
1629 cb->min_dump_alloc < 4096) {
1630 cb->min_dump_alloc = 4096;
1631 mutex_unlock(&cfg80211_mutex);
1632 return 1;
1633 }
1634 idx--;
1635 break;
1636 }
1637 } while (cb->args[1] > 0);
1638 break;
1639 }
1640 mutex_unlock(&cfg80211_mutex);
1641
1642 cb->args[0] = idx;
1643
1644 return skb->len;
1645 }
1646
1647 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1648 {
1649 struct sk_buff *msg;
1650 struct cfg80211_registered_device *dev = info->user_ptr[0];
1651
1652 msg = nlmsg_new(4096, GFP_KERNEL);
1653 if (!msg)
1654 return -ENOMEM;
1655
1656 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1657 false, NULL, NULL, NULL) < 0) {
1658 nlmsg_free(msg);
1659 return -ENOBUFS;
1660 }
1661
1662 return genlmsg_reply(msg, info);
1663 }
1664
1665 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1666 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1667 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1668 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1669 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1670 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1671 };
1672
1673 static int parse_txq_params(struct nlattr *tb[],
1674 struct ieee80211_txq_params *txq_params)
1675 {
1676 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1677 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1678 !tb[NL80211_TXQ_ATTR_AIFS])
1679 return -EINVAL;
1680
1681 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1682 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1683 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1684 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1685 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1686
1687 if (txq_params->ac >= NL80211_NUM_ACS)
1688 return -EINVAL;
1689
1690 return 0;
1691 }
1692
1693 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1694 {
1695 /*
1696 * You can only set the channel explicitly for WDS interfaces,
1697 * all others have their channel managed via their respective
1698 * "establish a connection" command (connect, join, ...)
1699 *
1700 * For AP/GO and mesh mode, the channel can be set with the
1701 * channel userspace API, but is only stored and passed to the
1702 * low-level driver when the AP starts or the mesh is joined.
1703 * This is for backward compatibility, userspace can also give
1704 * the channel in the start-ap or join-mesh commands instead.
1705 *
1706 * Monitors are special as they are normally slaved to
1707 * whatever else is going on, so they have their own special
1708 * operation to set the monitor channel if possible.
1709 */
1710 return !wdev ||
1711 wdev->iftype == NL80211_IFTYPE_AP ||
1712 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1713 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1714 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1715 }
1716
1717 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1718 struct genl_info *info,
1719 struct cfg80211_chan_def *chandef)
1720 {
1721 u32 control_freq;
1722
1723 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1724 return -EINVAL;
1725
1726 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1727
1728 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1729 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1730 chandef->center_freq1 = control_freq;
1731 chandef->center_freq2 = 0;
1732
1733 /* Primary channel not allowed */
1734 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1735 return -EINVAL;
1736
1737 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1738 enum nl80211_channel_type chantype;
1739
1740 chantype = nla_get_u32(
1741 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1742
1743 switch (chantype) {
1744 case NL80211_CHAN_NO_HT:
1745 case NL80211_CHAN_HT20:
1746 case NL80211_CHAN_HT40PLUS:
1747 case NL80211_CHAN_HT40MINUS:
1748 cfg80211_chandef_create(chandef, chandef->chan,
1749 chantype);
1750 break;
1751 default:
1752 return -EINVAL;
1753 }
1754 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1755 chandef->width =
1756 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1757 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1758 chandef->center_freq1 =
1759 nla_get_u32(
1760 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1761 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1762 chandef->center_freq2 =
1763 nla_get_u32(
1764 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1765 }
1766
1767 if (!cfg80211_chandef_valid(chandef))
1768 return -EINVAL;
1769
1770 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1771 IEEE80211_CHAN_DISABLED))
1772 return -EINVAL;
1773
1774 return 0;
1775 }
1776
1777 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1778 struct wireless_dev *wdev,
1779 struct genl_info *info)
1780 {
1781 struct cfg80211_chan_def chandef;
1782 int result;
1783 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1784
1785 if (wdev)
1786 iftype = wdev->iftype;
1787
1788 if (!nl80211_can_set_dev_channel(wdev))
1789 return -EOPNOTSUPP;
1790
1791 result = nl80211_parse_chandef(rdev, info, &chandef);
1792 if (result)
1793 return result;
1794
1795 mutex_lock(&rdev->devlist_mtx);
1796 switch (iftype) {
1797 case NL80211_IFTYPE_AP:
1798 case NL80211_IFTYPE_P2P_GO:
1799 if (wdev->beacon_interval) {
1800 result = -EBUSY;
1801 break;
1802 }
1803 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1804 result = -EINVAL;
1805 break;
1806 }
1807 wdev->preset_chandef = chandef;
1808 result = 0;
1809 break;
1810 case NL80211_IFTYPE_MESH_POINT:
1811 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1812 break;
1813 case NL80211_IFTYPE_MONITOR:
1814 result = cfg80211_set_monitor_channel(rdev, &chandef);
1815 break;
1816 default:
1817 result = -EINVAL;
1818 }
1819 mutex_unlock(&rdev->devlist_mtx);
1820
1821 return result;
1822 }
1823
1824 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1825 {
1826 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1827 struct net_device *netdev = info->user_ptr[1];
1828
1829 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1830 }
1831
1832 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1833 {
1834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1835 struct net_device *dev = info->user_ptr[1];
1836 struct wireless_dev *wdev = dev->ieee80211_ptr;
1837 const u8 *bssid;
1838
1839 if (!info->attrs[NL80211_ATTR_MAC])
1840 return -EINVAL;
1841
1842 if (netif_running(dev))
1843 return -EBUSY;
1844
1845 if (!rdev->ops->set_wds_peer)
1846 return -EOPNOTSUPP;
1847
1848 if (wdev->iftype != NL80211_IFTYPE_WDS)
1849 return -EOPNOTSUPP;
1850
1851 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1852 return rdev_set_wds_peer(rdev, dev, bssid);
1853 }
1854
1855
1856 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1857 {
1858 struct cfg80211_registered_device *rdev;
1859 struct net_device *netdev = NULL;
1860 struct wireless_dev *wdev;
1861 int result = 0, rem_txq_params = 0;
1862 struct nlattr *nl_txq_params;
1863 u32 changed;
1864 u8 retry_short = 0, retry_long = 0;
1865 u32 frag_threshold = 0, rts_threshold = 0;
1866 u8 coverage_class = 0;
1867
1868 /*
1869 * Try to find the wiphy and netdev. Normally this
1870 * function shouldn't need the netdev, but this is
1871 * done for backward compatibility -- previously
1872 * setting the channel was done per wiphy, but now
1873 * it is per netdev. Previous userland like hostapd
1874 * also passed a netdev to set_wiphy, so that it is
1875 * possible to let that go to the right netdev!
1876 */
1877 mutex_lock(&cfg80211_mutex);
1878
1879 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1880 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1881
1882 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1883 if (netdev && netdev->ieee80211_ptr) {
1884 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1885 mutex_lock(&rdev->mtx);
1886 } else
1887 netdev = NULL;
1888 }
1889
1890 if (!netdev) {
1891 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1892 info->attrs);
1893 if (IS_ERR(rdev)) {
1894 mutex_unlock(&cfg80211_mutex);
1895 return PTR_ERR(rdev);
1896 }
1897 wdev = NULL;
1898 netdev = NULL;
1899 result = 0;
1900
1901 mutex_lock(&rdev->mtx);
1902 } else
1903 wdev = netdev->ieee80211_ptr;
1904
1905 /*
1906 * end workaround code, by now the rdev is available
1907 * and locked, and wdev may or may not be NULL.
1908 */
1909
1910 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1911 result = cfg80211_dev_rename(
1912 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1913
1914 mutex_unlock(&cfg80211_mutex);
1915
1916 if (result)
1917 goto bad_res;
1918
1919 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1920 struct ieee80211_txq_params txq_params;
1921 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1922
1923 if (!rdev->ops->set_txq_params) {
1924 result = -EOPNOTSUPP;
1925 goto bad_res;
1926 }
1927
1928 if (!netdev) {
1929 result = -EINVAL;
1930 goto bad_res;
1931 }
1932
1933 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1934 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1935 result = -EINVAL;
1936 goto bad_res;
1937 }
1938
1939 if (!netif_running(netdev)) {
1940 result = -ENETDOWN;
1941 goto bad_res;
1942 }
1943
1944 nla_for_each_nested(nl_txq_params,
1945 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1946 rem_txq_params) {
1947 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1948 nla_data(nl_txq_params),
1949 nla_len(nl_txq_params),
1950 txq_params_policy);
1951 result = parse_txq_params(tb, &txq_params);
1952 if (result)
1953 goto bad_res;
1954
1955 result = rdev_set_txq_params(rdev, netdev,
1956 &txq_params);
1957 if (result)
1958 goto bad_res;
1959 }
1960 }
1961
1962 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1963 result = __nl80211_set_channel(rdev,
1964 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1965 info);
1966 if (result)
1967 goto bad_res;
1968 }
1969
1970 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1971 struct wireless_dev *txp_wdev = wdev;
1972 enum nl80211_tx_power_setting type;
1973 int idx, mbm = 0;
1974
1975 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1976 txp_wdev = NULL;
1977
1978 if (!rdev->ops->set_tx_power) {
1979 result = -EOPNOTSUPP;
1980 goto bad_res;
1981 }
1982
1983 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1984 type = nla_get_u32(info->attrs[idx]);
1985
1986 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1987 (type != NL80211_TX_POWER_AUTOMATIC)) {
1988 result = -EINVAL;
1989 goto bad_res;
1990 }
1991
1992 if (type != NL80211_TX_POWER_AUTOMATIC) {
1993 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1994 mbm = nla_get_u32(info->attrs[idx]);
1995 }
1996
1997 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1998 if (result)
1999 goto bad_res;
2000 }
2001
2002 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2003 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2004 u32 tx_ant, rx_ant;
2005 if ((!rdev->wiphy.available_antennas_tx &&
2006 !rdev->wiphy.available_antennas_rx) ||
2007 !rdev->ops->set_antenna) {
2008 result = -EOPNOTSUPP;
2009 goto bad_res;
2010 }
2011
2012 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2013 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2014
2015 /* reject antenna configurations which don't match the
2016 * available antenna masks, except for the "all" mask */
2017 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2018 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2019 result = -EINVAL;
2020 goto bad_res;
2021 }
2022
2023 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2024 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2025
2026 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2027 if (result)
2028 goto bad_res;
2029 }
2030
2031 changed = 0;
2032
2033 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2034 retry_short = nla_get_u8(
2035 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2036 if (retry_short == 0) {
2037 result = -EINVAL;
2038 goto bad_res;
2039 }
2040 changed |= WIPHY_PARAM_RETRY_SHORT;
2041 }
2042
2043 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2044 retry_long = nla_get_u8(
2045 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2046 if (retry_long == 0) {
2047 result = -EINVAL;
2048 goto bad_res;
2049 }
2050 changed |= WIPHY_PARAM_RETRY_LONG;
2051 }
2052
2053 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2054 frag_threshold = nla_get_u32(
2055 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2056 if (frag_threshold < 256) {
2057 result = -EINVAL;
2058 goto bad_res;
2059 }
2060 if (frag_threshold != (u32) -1) {
2061 /*
2062 * Fragments (apart from the last one) are required to
2063 * have even length. Make the fragmentation code
2064 * simpler by stripping LSB should someone try to use
2065 * odd threshold value.
2066 */
2067 frag_threshold &= ~0x1;
2068 }
2069 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2070 }
2071
2072 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2073 rts_threshold = nla_get_u32(
2074 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2075 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2076 }
2077
2078 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2079 coverage_class = nla_get_u8(
2080 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2081 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2082 }
2083
2084 if (changed) {
2085 u8 old_retry_short, old_retry_long;
2086 u32 old_frag_threshold, old_rts_threshold;
2087 u8 old_coverage_class;
2088
2089 if (!rdev->ops->set_wiphy_params) {
2090 result = -EOPNOTSUPP;
2091 goto bad_res;
2092 }
2093
2094 old_retry_short = rdev->wiphy.retry_short;
2095 old_retry_long = rdev->wiphy.retry_long;
2096 old_frag_threshold = rdev->wiphy.frag_threshold;
2097 old_rts_threshold = rdev->wiphy.rts_threshold;
2098 old_coverage_class = rdev->wiphy.coverage_class;
2099
2100 if (changed & WIPHY_PARAM_RETRY_SHORT)
2101 rdev->wiphy.retry_short = retry_short;
2102 if (changed & WIPHY_PARAM_RETRY_LONG)
2103 rdev->wiphy.retry_long = retry_long;
2104 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2105 rdev->wiphy.frag_threshold = frag_threshold;
2106 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2107 rdev->wiphy.rts_threshold = rts_threshold;
2108 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2109 rdev->wiphy.coverage_class = coverage_class;
2110
2111 result = rdev_set_wiphy_params(rdev, changed);
2112 if (result) {
2113 rdev->wiphy.retry_short = old_retry_short;
2114 rdev->wiphy.retry_long = old_retry_long;
2115 rdev->wiphy.frag_threshold = old_frag_threshold;
2116 rdev->wiphy.rts_threshold = old_rts_threshold;
2117 rdev->wiphy.coverage_class = old_coverage_class;
2118 }
2119 }
2120
2121 bad_res:
2122 mutex_unlock(&rdev->mtx);
2123 if (netdev)
2124 dev_put(netdev);
2125 return result;
2126 }
2127
2128 static inline u64 wdev_id(struct wireless_dev *wdev)
2129 {
2130 return (u64)wdev->identifier |
2131 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2132 }
2133
2134 static int nl80211_send_chandef(struct sk_buff *msg,
2135 struct cfg80211_chan_def *chandef)
2136 {
2137 WARN_ON(!cfg80211_chandef_valid(chandef));
2138
2139 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2140 chandef->chan->center_freq))
2141 return -ENOBUFS;
2142 switch (chandef->width) {
2143 case NL80211_CHAN_WIDTH_20_NOHT:
2144 case NL80211_CHAN_WIDTH_20:
2145 case NL80211_CHAN_WIDTH_40:
2146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2147 cfg80211_get_chandef_type(chandef)))
2148 return -ENOBUFS;
2149 break;
2150 default:
2151 break;
2152 }
2153 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2154 return -ENOBUFS;
2155 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2156 return -ENOBUFS;
2157 if (chandef->center_freq2 &&
2158 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2159 return -ENOBUFS;
2160 return 0;
2161 }
2162
2163 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2164 struct cfg80211_registered_device *rdev,
2165 struct wireless_dev *wdev)
2166 {
2167 struct net_device *dev = wdev->netdev;
2168 void *hdr;
2169
2170 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2171 if (!hdr)
2172 return -1;
2173
2174 if (dev &&
2175 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2176 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2177 goto nla_put_failure;
2178
2179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2180 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2181 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2182 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2183 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2184 rdev->devlist_generation ^
2185 (cfg80211_rdev_list_generation << 2)))
2186 goto nla_put_failure;
2187
2188 if (rdev->ops->get_channel) {
2189 int ret;
2190 struct cfg80211_chan_def chandef;
2191
2192 ret = rdev_get_channel(rdev, wdev, &chandef);
2193 if (ret == 0) {
2194 if (nl80211_send_chandef(msg, &chandef))
2195 goto nla_put_failure;
2196 }
2197 }
2198
2199 if (wdev->ssid_len) {
2200 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2201 goto nla_put_failure;
2202 }
2203
2204 return genlmsg_end(msg, hdr);
2205
2206 nla_put_failure:
2207 genlmsg_cancel(msg, hdr);
2208 return -EMSGSIZE;
2209 }
2210
2211 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2212 {
2213 int wp_idx = 0;
2214 int if_idx = 0;
2215 int wp_start = cb->args[0];
2216 int if_start = cb->args[1];
2217 struct cfg80211_registered_device *rdev;
2218 struct wireless_dev *wdev;
2219
2220 mutex_lock(&cfg80211_mutex);
2221 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2222 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2223 continue;
2224 if (wp_idx < wp_start) {
2225 wp_idx++;
2226 continue;
2227 }
2228 if_idx = 0;
2229
2230 mutex_lock(&rdev->devlist_mtx);
2231 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2232 if (if_idx < if_start) {
2233 if_idx++;
2234 continue;
2235 }
2236 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2237 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2238 rdev, wdev) < 0) {
2239 mutex_unlock(&rdev->devlist_mtx);
2240 goto out;
2241 }
2242 if_idx++;
2243 }
2244 mutex_unlock(&rdev->devlist_mtx);
2245
2246 wp_idx++;
2247 }
2248 out:
2249 mutex_unlock(&cfg80211_mutex);
2250
2251 cb->args[0] = wp_idx;
2252 cb->args[1] = if_idx;
2253
2254 return skb->len;
2255 }
2256
2257 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2258 {
2259 struct sk_buff *msg;
2260 struct cfg80211_registered_device *dev = info->user_ptr[0];
2261 struct wireless_dev *wdev = info->user_ptr[1];
2262
2263 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2264 if (!msg)
2265 return -ENOMEM;
2266
2267 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2268 dev, wdev) < 0) {
2269 nlmsg_free(msg);
2270 return -ENOBUFS;
2271 }
2272
2273 return genlmsg_reply(msg, info);
2274 }
2275
2276 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2277 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2278 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2279 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2280 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2281 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2282 };
2283
2284 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2285 {
2286 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2287 int flag;
2288
2289 *mntrflags = 0;
2290
2291 if (!nla)
2292 return -EINVAL;
2293
2294 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2295 nla, mntr_flags_policy))
2296 return -EINVAL;
2297
2298 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2299 if (flags[flag])
2300 *mntrflags |= (1<<flag);
2301
2302 return 0;
2303 }
2304
2305 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2306 struct net_device *netdev, u8 use_4addr,
2307 enum nl80211_iftype iftype)
2308 {
2309 if (!use_4addr) {
2310 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2311 return -EBUSY;
2312 return 0;
2313 }
2314
2315 switch (iftype) {
2316 case NL80211_IFTYPE_AP_VLAN:
2317 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2318 return 0;
2319 break;
2320 case NL80211_IFTYPE_STATION:
2321 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2322 return 0;
2323 break;
2324 default:
2325 break;
2326 }
2327
2328 return -EOPNOTSUPP;
2329 }
2330
2331 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2332 {
2333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2334 struct vif_params params;
2335 int err;
2336 enum nl80211_iftype otype, ntype;
2337 struct net_device *dev = info->user_ptr[1];
2338 u32 _flags, *flags = NULL;
2339 bool change = false;
2340
2341 memset(&params, 0, sizeof(params));
2342
2343 otype = ntype = dev->ieee80211_ptr->iftype;
2344
2345 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2346 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2347 if (otype != ntype)
2348 change = true;
2349 if (ntype > NL80211_IFTYPE_MAX)
2350 return -EINVAL;
2351 }
2352
2353 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2354 struct wireless_dev *wdev = dev->ieee80211_ptr;
2355
2356 if (ntype != NL80211_IFTYPE_MESH_POINT)
2357 return -EINVAL;
2358 if (netif_running(dev))
2359 return -EBUSY;
2360
2361 wdev_lock(wdev);
2362 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2363 IEEE80211_MAX_MESH_ID_LEN);
2364 wdev->mesh_id_up_len =
2365 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2366 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2367 wdev->mesh_id_up_len);
2368 wdev_unlock(wdev);
2369 }
2370
2371 if (info->attrs[NL80211_ATTR_4ADDR]) {
2372 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2373 change = true;
2374 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2375 if (err)
2376 return err;
2377 } else {
2378 params.use_4addr = -1;
2379 }
2380
2381 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2382 if (ntype != NL80211_IFTYPE_MONITOR)
2383 return -EINVAL;
2384 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2385 &_flags);
2386 if (err)
2387 return err;
2388
2389 flags = &_flags;
2390 change = true;
2391 }
2392
2393 if (change)
2394 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2395 else
2396 err = 0;
2397
2398 if (!err && params.use_4addr != -1)
2399 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2400
2401 return err;
2402 }
2403
2404 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2405 {
2406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2407 struct vif_params params;
2408 struct wireless_dev *wdev;
2409 struct sk_buff *msg;
2410 int err;
2411 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2412 u32 flags;
2413
2414 memset(&params, 0, sizeof(params));
2415
2416 if (!info->attrs[NL80211_ATTR_IFNAME])
2417 return -EINVAL;
2418
2419 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2420 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2421 if (type > NL80211_IFTYPE_MAX)
2422 return -EINVAL;
2423 }
2424
2425 if (!rdev->ops->add_virtual_intf ||
2426 !(rdev->wiphy.interface_modes & (1 << type)))
2427 return -EOPNOTSUPP;
2428
2429 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2430 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2431 ETH_ALEN);
2432 if (!is_valid_ether_addr(params.macaddr))
2433 return -EADDRNOTAVAIL;
2434 }
2435
2436 if (info->attrs[NL80211_ATTR_4ADDR]) {
2437 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2438 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2439 if (err)
2440 return err;
2441 }
2442
2443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2444 if (!msg)
2445 return -ENOMEM;
2446
2447 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2448 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2449 &flags);
2450 wdev = rdev_add_virtual_intf(rdev,
2451 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2452 type, err ? NULL : &flags, &params);
2453 if (IS_ERR(wdev)) {
2454 nlmsg_free(msg);
2455 return PTR_ERR(wdev);
2456 }
2457
2458 switch (type) {
2459 case NL80211_IFTYPE_MESH_POINT:
2460 if (!info->attrs[NL80211_ATTR_MESH_ID])
2461 break;
2462 wdev_lock(wdev);
2463 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2464 IEEE80211_MAX_MESH_ID_LEN);
2465 wdev->mesh_id_up_len =
2466 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2467 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2468 wdev->mesh_id_up_len);
2469 wdev_unlock(wdev);
2470 break;
2471 case NL80211_IFTYPE_P2P_DEVICE:
2472 /*
2473 * P2P Device doesn't have a netdev, so doesn't go
2474 * through the netdev notifier and must be added here
2475 */
2476 mutex_init(&wdev->mtx);
2477 INIT_LIST_HEAD(&wdev->event_list);
2478 spin_lock_init(&wdev->event_lock);
2479 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2480 spin_lock_init(&wdev->mgmt_registrations_lock);
2481
2482 mutex_lock(&rdev->devlist_mtx);
2483 wdev->identifier = ++rdev->wdev_id;
2484 list_add_rcu(&wdev->list, &rdev->wdev_list);
2485 rdev->devlist_generation++;
2486 mutex_unlock(&rdev->devlist_mtx);
2487 break;
2488 default:
2489 break;
2490 }
2491
2492 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2493 rdev, wdev) < 0) {
2494 nlmsg_free(msg);
2495 return -ENOBUFS;
2496 }
2497
2498 return genlmsg_reply(msg, info);
2499 }
2500
2501 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2502 {
2503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2504 struct wireless_dev *wdev = info->user_ptr[1];
2505
2506 if (!rdev->ops->del_virtual_intf)
2507 return -EOPNOTSUPP;
2508
2509 /*
2510 * If we remove a wireless device without a netdev then clear
2511 * user_ptr[1] so that nl80211_post_doit won't dereference it
2512 * to check if it needs to do dev_put(). Otherwise it crashes
2513 * since the wdev has been freed, unlike with a netdev where
2514 * we need the dev_put() for the netdev to really be freed.
2515 */
2516 if (!wdev->netdev)
2517 info->user_ptr[1] = NULL;
2518
2519 return rdev_del_virtual_intf(rdev, wdev);
2520 }
2521
2522 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2523 {
2524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2525 struct net_device *dev = info->user_ptr[1];
2526 u16 noack_map;
2527
2528 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2529 return -EINVAL;
2530
2531 if (!rdev->ops->set_noack_map)
2532 return -EOPNOTSUPP;
2533
2534 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2535
2536 return rdev_set_noack_map(rdev, dev, noack_map);
2537 }
2538
2539 struct get_key_cookie {
2540 struct sk_buff *msg;
2541 int error;
2542 int idx;
2543 };
2544
2545 static void get_key_callback(void *c, struct key_params *params)
2546 {
2547 struct nlattr *key;
2548 struct get_key_cookie *cookie = c;
2549
2550 if ((params->key &&
2551 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2552 params->key_len, params->key)) ||
2553 (params->seq &&
2554 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2555 params->seq_len, params->seq)) ||
2556 (params->cipher &&
2557 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2558 params->cipher)))
2559 goto nla_put_failure;
2560
2561 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2562 if (!key)
2563 goto nla_put_failure;
2564
2565 if ((params->key &&
2566 nla_put(cookie->msg, NL80211_KEY_DATA,
2567 params->key_len, params->key)) ||
2568 (params->seq &&
2569 nla_put(cookie->msg, NL80211_KEY_SEQ,
2570 params->seq_len, params->seq)) ||
2571 (params->cipher &&
2572 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2573 params->cipher)))
2574 goto nla_put_failure;
2575
2576 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2577 goto nla_put_failure;
2578
2579 nla_nest_end(cookie->msg, key);
2580
2581 return;
2582 nla_put_failure:
2583 cookie->error = 1;
2584 }
2585
2586 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2587 {
2588 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2589 int err;
2590 struct net_device *dev = info->user_ptr[1];
2591 u8 key_idx = 0;
2592 const u8 *mac_addr = NULL;
2593 bool pairwise;
2594 struct get_key_cookie cookie = {
2595 .error = 0,
2596 };
2597 void *hdr;
2598 struct sk_buff *msg;
2599
2600 if (info->attrs[NL80211_ATTR_KEY_IDX])
2601 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2602
2603 if (key_idx > 5)
2604 return -EINVAL;
2605
2606 if (info->attrs[NL80211_ATTR_MAC])
2607 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2608
2609 pairwise = !!mac_addr;
2610 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2611 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2612 if (kt >= NUM_NL80211_KEYTYPES)
2613 return -EINVAL;
2614 if (kt != NL80211_KEYTYPE_GROUP &&
2615 kt != NL80211_KEYTYPE_PAIRWISE)
2616 return -EINVAL;
2617 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2618 }
2619
2620 if (!rdev->ops->get_key)
2621 return -EOPNOTSUPP;
2622
2623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2624 if (!msg)
2625 return -ENOMEM;
2626
2627 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2628 NL80211_CMD_NEW_KEY);
2629 if (IS_ERR(hdr))
2630 return PTR_ERR(hdr);
2631
2632 cookie.msg = msg;
2633 cookie.idx = key_idx;
2634
2635 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2636 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2637 goto nla_put_failure;
2638 if (mac_addr &&
2639 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2640 goto nla_put_failure;
2641
2642 if (pairwise && mac_addr &&
2643 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2644 return -ENOENT;
2645
2646 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2647 get_key_callback);
2648
2649 if (err)
2650 goto free_msg;
2651
2652 if (cookie.error)
2653 goto nla_put_failure;
2654
2655 genlmsg_end(msg, hdr);
2656 return genlmsg_reply(msg, info);
2657
2658 nla_put_failure:
2659 err = -ENOBUFS;
2660 free_msg:
2661 nlmsg_free(msg);
2662 return err;
2663 }
2664
2665 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2666 {
2667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2668 struct key_parse key;
2669 int err;
2670 struct net_device *dev = info->user_ptr[1];
2671
2672 err = nl80211_parse_key(info, &key);
2673 if (err)
2674 return err;
2675
2676 if (key.idx < 0)
2677 return -EINVAL;
2678
2679 /* only support setting default key */
2680 if (!key.def && !key.defmgmt)
2681 return -EINVAL;
2682
2683 wdev_lock(dev->ieee80211_ptr);
2684
2685 if (key.def) {
2686 if (!rdev->ops->set_default_key) {
2687 err = -EOPNOTSUPP;
2688 goto out;
2689 }
2690
2691 err = nl80211_key_allowed(dev->ieee80211_ptr);
2692 if (err)
2693 goto out;
2694
2695 err = rdev_set_default_key(rdev, dev, key.idx,
2696 key.def_uni, key.def_multi);
2697
2698 if (err)
2699 goto out;
2700
2701 #ifdef CONFIG_CFG80211_WEXT
2702 dev->ieee80211_ptr->wext.default_key = key.idx;
2703 #endif
2704 } else {
2705 if (key.def_uni || !key.def_multi) {
2706 err = -EINVAL;
2707 goto out;
2708 }
2709
2710 if (!rdev->ops->set_default_mgmt_key) {
2711 err = -EOPNOTSUPP;
2712 goto out;
2713 }
2714
2715 err = nl80211_key_allowed(dev->ieee80211_ptr);
2716 if (err)
2717 goto out;
2718
2719 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2720 if (err)
2721 goto out;
2722
2723 #ifdef CONFIG_CFG80211_WEXT
2724 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2725 #endif
2726 }
2727
2728 out:
2729 wdev_unlock(dev->ieee80211_ptr);
2730
2731 return err;
2732 }
2733
2734 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2735 {
2736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2737 int err;
2738 struct net_device *dev = info->user_ptr[1];
2739 struct key_parse key;
2740 const u8 *mac_addr = NULL;
2741
2742 err = nl80211_parse_key(info, &key);
2743 if (err)
2744 return err;
2745
2746 if (!key.p.key)
2747 return -EINVAL;
2748
2749 if (info->attrs[NL80211_ATTR_MAC])
2750 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2751
2752 if (key.type == -1) {
2753 if (mac_addr)
2754 key.type = NL80211_KEYTYPE_PAIRWISE;
2755 else
2756 key.type = NL80211_KEYTYPE_GROUP;
2757 }
2758
2759 /* for now */
2760 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2761 key.type != NL80211_KEYTYPE_GROUP)
2762 return -EINVAL;
2763
2764 if (!rdev->ops->add_key)
2765 return -EOPNOTSUPP;
2766
2767 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2768 key.type == NL80211_KEYTYPE_PAIRWISE,
2769 mac_addr))
2770 return -EINVAL;
2771
2772 wdev_lock(dev->ieee80211_ptr);
2773 err = nl80211_key_allowed(dev->ieee80211_ptr);
2774 if (!err)
2775 err = rdev_add_key(rdev, dev, key.idx,
2776 key.type == NL80211_KEYTYPE_PAIRWISE,
2777 mac_addr, &key.p);
2778 wdev_unlock(dev->ieee80211_ptr);
2779
2780 return err;
2781 }
2782
2783 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2784 {
2785 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2786 int err;
2787 struct net_device *dev = info->user_ptr[1];
2788 u8 *mac_addr = NULL;
2789 struct key_parse key;
2790
2791 err = nl80211_parse_key(info, &key);
2792 if (err)
2793 return err;
2794
2795 if (info->attrs[NL80211_ATTR_MAC])
2796 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2797
2798 if (key.type == -1) {
2799 if (mac_addr)
2800 key.type = NL80211_KEYTYPE_PAIRWISE;
2801 else
2802 key.type = NL80211_KEYTYPE_GROUP;
2803 }
2804
2805 /* for now */
2806 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2807 key.type != NL80211_KEYTYPE_GROUP)
2808 return -EINVAL;
2809
2810 if (!rdev->ops->del_key)
2811 return -EOPNOTSUPP;
2812
2813 wdev_lock(dev->ieee80211_ptr);
2814 err = nl80211_key_allowed(dev->ieee80211_ptr);
2815
2816 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2817 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2818 err = -ENOENT;
2819
2820 if (!err)
2821 err = rdev_del_key(rdev, dev, key.idx,
2822 key.type == NL80211_KEYTYPE_PAIRWISE,
2823 mac_addr);
2824
2825 #ifdef CONFIG_CFG80211_WEXT
2826 if (!err) {
2827 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2828 dev->ieee80211_ptr->wext.default_key = -1;
2829 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2830 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2831 }
2832 #endif
2833 wdev_unlock(dev->ieee80211_ptr);
2834
2835 return err;
2836 }
2837
2838 /* This function returns an error or the number of nested attributes */
2839 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2840 {
2841 struct nlattr *attr;
2842 int n_entries = 0, tmp;
2843
2844 nla_for_each_nested(attr, nl_attr, tmp) {
2845 if (nla_len(attr) != ETH_ALEN)
2846 return -EINVAL;
2847
2848 n_entries++;
2849 }
2850
2851 return n_entries;
2852 }
2853
2854 /*
2855 * This function parses ACL information and allocates memory for ACL data.
2856 * On successful return, the calling function is responsible to free the
2857 * ACL buffer returned by this function.
2858 */
2859 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2860 struct genl_info *info)
2861 {
2862 enum nl80211_acl_policy acl_policy;
2863 struct nlattr *attr;
2864 struct cfg80211_acl_data *acl;
2865 int i = 0, n_entries, tmp;
2866
2867 if (!wiphy->max_acl_mac_addrs)
2868 return ERR_PTR(-EOPNOTSUPP);
2869
2870 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2871 return ERR_PTR(-EINVAL);
2872
2873 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2874 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2875 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2876 return ERR_PTR(-EINVAL);
2877
2878 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2879 return ERR_PTR(-EINVAL);
2880
2881 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2882 if (n_entries < 0)
2883 return ERR_PTR(n_entries);
2884
2885 if (n_entries > wiphy->max_acl_mac_addrs)
2886 return ERR_PTR(-ENOTSUPP);
2887
2888 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2889 GFP_KERNEL);
2890 if (!acl)
2891 return ERR_PTR(-ENOMEM);
2892
2893 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2894 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2895 i++;
2896 }
2897
2898 acl->n_acl_entries = n_entries;
2899 acl->acl_policy = acl_policy;
2900
2901 return acl;
2902 }
2903
2904 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2905 {
2906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2907 struct net_device *dev = info->user_ptr[1];
2908 struct cfg80211_acl_data *acl;
2909 int err;
2910
2911 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2912 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2913 return -EOPNOTSUPP;
2914
2915 if (!dev->ieee80211_ptr->beacon_interval)
2916 return -EINVAL;
2917
2918 acl = parse_acl_data(&rdev->wiphy, info);
2919 if (IS_ERR(acl))
2920 return PTR_ERR(acl);
2921
2922 err = rdev_set_mac_acl(rdev, dev, acl);
2923
2924 kfree(acl);
2925
2926 return err;
2927 }
2928
2929 static int nl80211_parse_beacon(struct genl_info *info,
2930 struct cfg80211_beacon_data *bcn)
2931 {
2932 bool haveinfo = false;
2933
2934 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2935 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2936 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2937 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2938 return -EINVAL;
2939
2940 memset(bcn, 0, sizeof(*bcn));
2941
2942 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2943 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2944 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2945 if (!bcn->head_len)
2946 return -EINVAL;
2947 haveinfo = true;
2948 }
2949
2950 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2951 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2952 bcn->tail_len =
2953 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2954 haveinfo = true;
2955 }
2956
2957 if (!haveinfo)
2958 return -EINVAL;
2959
2960 if (info->attrs[NL80211_ATTR_IE]) {
2961 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2962 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2963 }
2964
2965 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2966 bcn->proberesp_ies =
2967 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2968 bcn->proberesp_ies_len =
2969 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2970 }
2971
2972 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2973 bcn->assocresp_ies =
2974 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2975 bcn->assocresp_ies_len =
2976 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2977 }
2978
2979 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2980 bcn->probe_resp =
2981 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2982 bcn->probe_resp_len =
2983 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2984 }
2985
2986 return 0;
2987 }
2988
2989 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2990 struct cfg80211_ap_settings *params)
2991 {
2992 struct wireless_dev *wdev;
2993 bool ret = false;
2994
2995 mutex_lock(&rdev->devlist_mtx);
2996
2997 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2998 if (wdev->iftype != NL80211_IFTYPE_AP &&
2999 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3000 continue;
3001
3002 if (!wdev->preset_chandef.chan)
3003 continue;
3004
3005 params->chandef = wdev->preset_chandef;
3006 ret = true;
3007 break;
3008 }
3009
3010 mutex_unlock(&rdev->devlist_mtx);
3011
3012 return ret;
3013 }
3014
3015 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3016 enum nl80211_auth_type auth_type,
3017 enum nl80211_commands cmd)
3018 {
3019 if (auth_type > NL80211_AUTHTYPE_MAX)
3020 return false;
3021
3022 switch (cmd) {
3023 case NL80211_CMD_AUTHENTICATE:
3024 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3025 auth_type == NL80211_AUTHTYPE_SAE)
3026 return false;
3027 return true;
3028 case NL80211_CMD_CONNECT:
3029 case NL80211_CMD_START_AP:
3030 /* SAE not supported yet */
3031 if (auth_type == NL80211_AUTHTYPE_SAE)
3032 return false;
3033 return true;
3034 default:
3035 return false;
3036 }
3037 }
3038
3039 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3040 {
3041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3042 struct net_device *dev = info->user_ptr[1];
3043 struct wireless_dev *wdev = dev->ieee80211_ptr;
3044 struct cfg80211_ap_settings params;
3045 int err;
3046 u8 radar_detect_width = 0;
3047
3048 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3049 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3050 return -EOPNOTSUPP;
3051
3052 if (!rdev->ops->start_ap)
3053 return -EOPNOTSUPP;
3054
3055 if (wdev->beacon_interval)
3056 return -EALREADY;
3057
3058 memset(&params, 0, sizeof(params));
3059
3060 /* these are required for START_AP */
3061 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3062 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3063 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3064 return -EINVAL;
3065
3066 err = nl80211_parse_beacon(info, &params.beacon);
3067 if (err)
3068 return err;
3069
3070 params.beacon_interval =
3071 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3072 params.dtim_period =
3073 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3074
3075 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3076 if (err)
3077 return err;
3078
3079 /*
3080 * In theory, some of these attributes should be required here
3081 * but since they were not used when the command was originally
3082 * added, keep them optional for old user space programs to let
3083 * them continue to work with drivers that do not need the
3084 * additional information -- drivers must check!
3085 */
3086 if (info->attrs[NL80211_ATTR_SSID]) {
3087 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3088 params.ssid_len =
3089 nla_len(info->attrs[NL80211_ATTR_SSID]);
3090 if (params.ssid_len == 0 ||
3091 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3092 return -EINVAL;
3093 }
3094
3095 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3096 params.hidden_ssid = nla_get_u32(
3097 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3098 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3099 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3100 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3101 return -EINVAL;
3102 }
3103
3104 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3105
3106 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3107 params.auth_type = nla_get_u32(
3108 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3109 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3110 NL80211_CMD_START_AP))
3111 return -EINVAL;
3112 } else
3113 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3114
3115 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3116 NL80211_MAX_NR_CIPHER_SUITES);
3117 if (err)
3118 return err;
3119
3120 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3121 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3122 return -EOPNOTSUPP;
3123 params.inactivity_timeout = nla_get_u16(
3124 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3125 }
3126
3127 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3128 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3129 return -EINVAL;
3130 params.p2p_ctwindow =
3131 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3132 if (params.p2p_ctwindow > 127)
3133 return -EINVAL;
3134 if (params.p2p_ctwindow != 0 &&
3135 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3136 return -EINVAL;
3137 }
3138
3139 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3140 u8 tmp;
3141
3142 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3143 return -EINVAL;
3144 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3145 if (tmp > 1)
3146 return -EINVAL;
3147 params.p2p_opp_ps = tmp;
3148 if (params.p2p_opp_ps != 0 &&
3149 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3150 return -EINVAL;
3151 }
3152
3153 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3154 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3155 if (err)
3156 return err;
3157 } else if (wdev->preset_chandef.chan) {
3158 params.chandef = wdev->preset_chandef;
3159 } else if (!nl80211_get_ap_channel(rdev, &params))
3160 return -EINVAL;
3161
3162 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3163 return -EINVAL;
3164
3165 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3166 if (err < 0)
3167 return err;
3168 if (err) {
3169 radar_detect_width = BIT(params.chandef.width);
3170 params.radar_required = true;
3171 }
3172
3173 mutex_lock(&rdev->devlist_mtx);
3174 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3175 params.chandef.chan,
3176 CHAN_MODE_SHARED,
3177 radar_detect_width);
3178 mutex_unlock(&rdev->devlist_mtx);
3179
3180 if (err)
3181 return err;
3182
3183 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3184 params.acl = parse_acl_data(&rdev->wiphy, info);
3185 if (IS_ERR(params.acl))
3186 return PTR_ERR(params.acl);
3187 }
3188
3189 err = rdev_start_ap(rdev, dev, &params);
3190 if (!err) {
3191 wdev->preset_chandef = params.chandef;
3192 wdev->beacon_interval = params.beacon_interval;
3193 wdev->channel = params.chandef.chan;
3194 wdev->ssid_len = params.ssid_len;
3195 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3196 }
3197
3198 kfree(params.acl);
3199
3200 return err;
3201 }
3202
3203 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3204 {
3205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3206 struct net_device *dev = info->user_ptr[1];
3207 struct wireless_dev *wdev = dev->ieee80211_ptr;
3208 struct cfg80211_beacon_data params;
3209 int err;
3210
3211 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3212 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3213 return -EOPNOTSUPP;
3214
3215 if (!rdev->ops->change_beacon)
3216 return -EOPNOTSUPP;
3217
3218 if (!wdev->beacon_interval)
3219 return -EINVAL;
3220
3221 err = nl80211_parse_beacon(info, &params);
3222 if (err)
3223 return err;
3224
3225 return rdev_change_beacon(rdev, dev, &params);
3226 }
3227
3228 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3229 {
3230 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3231 struct net_device *dev = info->user_ptr[1];
3232
3233 return cfg80211_stop_ap(rdev, dev);
3234 }
3235
3236 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3237 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3238 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3239 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3240 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3241 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3242 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3243 };
3244
3245 static int parse_station_flags(struct genl_info *info,
3246 enum nl80211_iftype iftype,
3247 struct station_parameters *params)
3248 {
3249 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3250 struct nlattr *nla;
3251 int flag;
3252
3253 /*
3254 * Try parsing the new attribute first so userspace
3255 * can specify both for older kernels.
3256 */
3257 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3258 if (nla) {
3259 struct nl80211_sta_flag_update *sta_flags;
3260
3261 sta_flags = nla_data(nla);
3262 params->sta_flags_mask = sta_flags->mask;
3263 params->sta_flags_set = sta_flags->set;
3264 params->sta_flags_set &= params->sta_flags_mask;
3265 if ((params->sta_flags_mask |
3266 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3267 return -EINVAL;
3268 return 0;
3269 }
3270
3271 /* if present, parse the old attribute */
3272
3273 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3274 if (!nla)
3275 return 0;
3276
3277 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3278 nla, sta_flags_policy))
3279 return -EINVAL;
3280
3281 /*
3282 * Only allow certain flags for interface types so that
3283 * other attributes are silently ignored. Remember that
3284 * this is backward compatibility code with old userspace
3285 * and shouldn't be hit in other cases anyway.
3286 */
3287 switch (iftype) {
3288 case NL80211_IFTYPE_AP:
3289 case NL80211_IFTYPE_AP_VLAN:
3290 case NL80211_IFTYPE_P2P_GO:
3291 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3292 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3293 BIT(NL80211_STA_FLAG_WME) |
3294 BIT(NL80211_STA_FLAG_MFP);
3295 break;
3296 case NL80211_IFTYPE_P2P_CLIENT:
3297 case NL80211_IFTYPE_STATION:
3298 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3299 BIT(NL80211_STA_FLAG_TDLS_PEER);
3300 break;
3301 case NL80211_IFTYPE_MESH_POINT:
3302 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3303 BIT(NL80211_STA_FLAG_MFP) |
3304 BIT(NL80211_STA_FLAG_AUTHORIZED);
3305 default:
3306 return -EINVAL;
3307 }
3308
3309 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3310 if (flags[flag]) {
3311 params->sta_flags_set |= (1<<flag);
3312
3313 /* no longer support new API additions in old API */
3314 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3315 return -EINVAL;
3316 }
3317 }
3318
3319 return 0;
3320 }
3321
3322 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3323 int attr)
3324 {
3325 struct nlattr *rate;
3326 u32 bitrate;
3327 u16 bitrate_compat;
3328
3329 rate = nla_nest_start(msg, attr);
3330 if (!rate)
3331 return false;
3332
3333 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3334 bitrate = cfg80211_calculate_bitrate(info);
3335 /* report 16-bit bitrate only if we can */
3336 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3337 if (bitrate > 0 &&
3338 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3339 return false;
3340 if (bitrate_compat > 0 &&
3341 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3342 return false;
3343
3344 if (info->flags & RATE_INFO_FLAGS_MCS) {
3345 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3346 return false;
3347 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3348 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3349 return false;
3350 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3351 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3352 return false;
3353 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3354 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3355 return false;
3356 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3357 return false;
3358 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3359 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3360 return false;
3361 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3362 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3363 return false;
3364 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3365 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3366 return false;
3367 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3368 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3369 return false;
3370 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3371 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3372 return false;
3373 }
3374
3375 nla_nest_end(msg, rate);
3376 return true;
3377 }
3378
3379 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3380 int flags,
3381 struct cfg80211_registered_device *rdev,
3382 struct net_device *dev,
3383 const u8 *mac_addr, struct station_info *sinfo)
3384 {
3385 void *hdr;
3386 struct nlattr *sinfoattr, *bss_param;
3387
3388 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3389 if (!hdr)
3390 return -1;
3391
3392 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3393 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3394 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3395 goto nla_put_failure;
3396
3397 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3398 if (!sinfoattr)
3399 goto nla_put_failure;
3400 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3401 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3402 sinfo->connected_time))
3403 goto nla_put_failure;
3404 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3405 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3406 sinfo->inactive_time))
3407 goto nla_put_failure;
3408 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3409 STATION_INFO_RX_BYTES64)) &&
3410 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3411 (u32)sinfo->rx_bytes))
3412 goto nla_put_failure;
3413 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3414 NL80211_STA_INFO_TX_BYTES64)) &&
3415 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3416 (u32)sinfo->tx_bytes))
3417 goto nla_put_failure;
3418 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3419 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3420 sinfo->rx_bytes))
3421 goto nla_put_failure;
3422 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3423 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3424 sinfo->tx_bytes))
3425 goto nla_put_failure;
3426 if ((sinfo->filled & STATION_INFO_LLID) &&
3427 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3428 goto nla_put_failure;
3429 if ((sinfo->filled & STATION_INFO_PLID) &&
3430 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3431 goto nla_put_failure;
3432 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3433 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3434 sinfo->plink_state))
3435 goto nla_put_failure;
3436 switch (rdev->wiphy.signal_type) {
3437 case CFG80211_SIGNAL_TYPE_MBM:
3438 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3439 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3440 sinfo->signal))
3441 goto nla_put_failure;
3442 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3443 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3444 sinfo->signal_avg))
3445 goto nla_put_failure;
3446 break;
3447 default:
3448 break;
3449 }
3450 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3451 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3452 NL80211_STA_INFO_TX_BITRATE))
3453 goto nla_put_failure;
3454 }
3455 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3456 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3457 NL80211_STA_INFO_RX_BITRATE))
3458 goto nla_put_failure;
3459 }
3460 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3461 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3462 sinfo->rx_packets))
3463 goto nla_put_failure;
3464 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3465 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3466 sinfo->tx_packets))
3467 goto nla_put_failure;
3468 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3469 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3470 sinfo->tx_retries))
3471 goto nla_put_failure;
3472 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3473 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3474 sinfo->tx_failed))
3475 goto nla_put_failure;
3476 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3477 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3478 sinfo->beacon_loss_count))
3479 goto nla_put_failure;
3480 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3481 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3482 sinfo->local_pm))
3483 goto nla_put_failure;
3484 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3485 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3486 sinfo->peer_pm))
3487 goto nla_put_failure;
3488 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3489 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3490 sinfo->nonpeer_pm))
3491 goto nla_put_failure;
3492 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3493 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3494 if (!bss_param)
3495 goto nla_put_failure;
3496
3497 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3498 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3499 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3500 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3501 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3502 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3503 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3504 sinfo->bss_param.dtim_period) ||
3505 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3506 sinfo->bss_param.beacon_interval))
3507 goto nla_put_failure;
3508
3509 nla_nest_end(msg, bss_param);
3510 }
3511 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3512 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3513 sizeof(struct nl80211_sta_flag_update),
3514 &sinfo->sta_flags))
3515 goto nla_put_failure;
3516 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3517 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3518 sinfo->t_offset))
3519 goto nla_put_failure;
3520 nla_nest_end(msg, sinfoattr);
3521
3522 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3523 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3524 sinfo->assoc_req_ies))
3525 goto nla_put_failure;
3526
3527 return genlmsg_end(msg, hdr);
3528
3529 nla_put_failure:
3530 genlmsg_cancel(msg, hdr);
3531 return -EMSGSIZE;
3532 }
3533
3534 static int nl80211_dump_station(struct sk_buff *skb,
3535 struct netlink_callback *cb)
3536 {
3537 struct station_info sinfo;
3538 struct cfg80211_registered_device *dev;
3539 struct wireless_dev *wdev;
3540 u8 mac_addr[ETH_ALEN];
3541 int sta_idx = cb->args[2];
3542 int err;
3543
3544 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3545 if (err)
3546 return err;
3547
3548 if (!wdev->netdev) {
3549 err = -EINVAL;
3550 goto out_err;
3551 }
3552
3553 if (!dev->ops->dump_station) {
3554 err = -EOPNOTSUPP;
3555 goto out_err;
3556 }
3557
3558 while (1) {
3559 memset(&sinfo, 0, sizeof(sinfo));
3560 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3561 mac_addr, &sinfo);
3562 if (err == -ENOENT)
3563 break;
3564 if (err)
3565 goto out_err;
3566
3567 if (nl80211_send_station(skb,
3568 NETLINK_CB(cb->skb).portid,
3569 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3570 dev, wdev->netdev, mac_addr,
3571 &sinfo) < 0)
3572 goto out;
3573
3574 sta_idx++;
3575 }
3576
3577
3578 out:
3579 cb->args[2] = sta_idx;
3580 err = skb->len;
3581 out_err:
3582 nl80211_finish_wdev_dump(dev);
3583
3584 return err;
3585 }
3586
3587 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3588 {
3589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3590 struct net_device *dev = info->user_ptr[1];
3591 struct station_info sinfo;
3592 struct sk_buff *msg;
3593 u8 *mac_addr = NULL;
3594 int err;
3595
3596 memset(&sinfo, 0, sizeof(sinfo));
3597
3598 if (!info->attrs[NL80211_ATTR_MAC])
3599 return -EINVAL;
3600
3601 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3602
3603 if (!rdev->ops->get_station)
3604 return -EOPNOTSUPP;
3605
3606 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3607 if (err)
3608 return err;
3609
3610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3611 if (!msg)
3612 return -ENOMEM;
3613
3614 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3615 rdev, dev, mac_addr, &sinfo) < 0) {
3616 nlmsg_free(msg);
3617 return -ENOBUFS;
3618 }
3619
3620 return genlmsg_reply(msg, info);
3621 }
3622
3623 int cfg80211_check_station_change(struct wiphy *wiphy,
3624 struct station_parameters *params,
3625 enum cfg80211_station_type statype)
3626 {
3627 if (params->listen_interval != -1)
3628 return -EINVAL;
3629 if (params->aid)
3630 return -EINVAL;
3631
3632 /* When you run into this, adjust the code below for the new flag */
3633 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3634
3635 switch (statype) {
3636 case CFG80211_STA_MESH_PEER_KERNEL:
3637 case CFG80211_STA_MESH_PEER_USER:
3638 /*
3639 * No ignoring the TDLS flag here -- the userspace mesh
3640 * code doesn't have the bug of including TDLS in the
3641 * mask everywhere.
3642 */
3643 if (params->sta_flags_mask &
3644 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3645 BIT(NL80211_STA_FLAG_MFP) |
3646 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3647 return -EINVAL;
3648 break;
3649 case CFG80211_STA_TDLS_PEER_SETUP:
3650 case CFG80211_STA_TDLS_PEER_ACTIVE:
3651 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3652 return -EINVAL;
3653 /* ignore since it can't change */
3654 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3655 break;
3656 default:
3657 /* disallow mesh-specific things */
3658 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3659 return -EINVAL;
3660 if (params->local_pm)
3661 return -EINVAL;
3662 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3663 return -EINVAL;
3664 }
3665
3666 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3667 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3668 /* TDLS can't be set, ... */
3669 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3670 return -EINVAL;
3671 /*
3672 * ... but don't bother the driver with it. This works around
3673 * a hostapd/wpa_supplicant issue -- it always includes the
3674 * TLDS_PEER flag in the mask even for AP mode.
3675 */
3676 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3677 }
3678
3679 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3680 /* reject other things that can't change */
3681 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3682 return -EINVAL;
3683 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3684 return -EINVAL;
3685 if (params->supported_rates)
3686 return -EINVAL;
3687 if (params->ext_capab || params->ht_capa || params->vht_capa)
3688 return -EINVAL;
3689 }
3690
3691 if (statype != CFG80211_STA_AP_CLIENT) {
3692 if (params->vlan)
3693 return -EINVAL;
3694 }
3695
3696 switch (statype) {
3697 case CFG80211_STA_AP_MLME_CLIENT:
3698 /* Use this only for authorizing/unauthorizing a station */
3699 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3700 return -EOPNOTSUPP;
3701 break;
3702 case CFG80211_STA_AP_CLIENT:
3703 /* accept only the listed bits */
3704 if (params->sta_flags_mask &
3705 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3706 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3707 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3708 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3709 BIT(NL80211_STA_FLAG_WME) |
3710 BIT(NL80211_STA_FLAG_MFP)))
3711 return -EINVAL;
3712
3713 /* but authenticated/associated only if driver handles it */
3714 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3715 params->sta_flags_mask &
3716 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3717 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3718 return -EINVAL;
3719 break;
3720 case CFG80211_STA_IBSS:
3721 case CFG80211_STA_AP_STA:
3722 /* reject any changes other than AUTHORIZED */
3723 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3724 return -EINVAL;
3725 break;
3726 case CFG80211_STA_TDLS_PEER_SETUP:
3727 /* reject any changes other than AUTHORIZED or WME */
3728 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3729 BIT(NL80211_STA_FLAG_WME)))
3730 return -EINVAL;
3731 /* force (at least) rates when authorizing */
3732 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3733 !params->supported_rates)
3734 return -EINVAL;
3735 break;
3736 case CFG80211_STA_TDLS_PEER_ACTIVE:
3737 /* reject any changes */
3738 return -EINVAL;
3739 case CFG80211_STA_MESH_PEER_KERNEL:
3740 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3741 return -EINVAL;
3742 break;
3743 case CFG80211_STA_MESH_PEER_USER:
3744 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3745 return -EINVAL;
3746 break;
3747 }
3748
3749 return 0;
3750 }
3751 EXPORT_SYMBOL(cfg80211_check_station_change);
3752
3753 /*
3754 * Get vlan interface making sure it is running and on the right wiphy.
3755 */
3756 static struct net_device *get_vlan(struct genl_info *info,
3757 struct cfg80211_registered_device *rdev)
3758 {
3759 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3760 struct net_device *v;
3761 int ret;
3762
3763 if (!vlanattr)
3764 return NULL;
3765
3766 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3767 if (!v)
3768 return ERR_PTR(-ENODEV);
3769
3770 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3771 ret = -EINVAL;
3772 goto error;
3773 }
3774
3775 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3776 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3777 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3778 ret = -EINVAL;
3779 goto error;
3780 }
3781
3782 if (!netif_running(v)) {
3783 ret = -ENETDOWN;
3784 goto error;
3785 }
3786
3787 return v;
3788 error:
3789 dev_put(v);
3790 return ERR_PTR(ret);
3791 }
3792
3793 static struct nla_policy
3794 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3795 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3796 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3797 };
3798
3799 static int nl80211_parse_sta_wme(struct genl_info *info,
3800 struct station_parameters *params)
3801 {
3802 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3803 struct nlattr *nla;
3804 int err;
3805
3806 /* parse WME attributes if present */
3807 if (!info->attrs[NL80211_ATTR_STA_WME])
3808 return 0;
3809
3810 nla = info->attrs[NL80211_ATTR_STA_WME];
3811 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3812 nl80211_sta_wme_policy);
3813 if (err)
3814 return err;
3815
3816 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3817 params->uapsd_queues = nla_get_u8(
3818 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3819 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3820 return -EINVAL;
3821
3822 if (tb[NL80211_STA_WME_MAX_SP])
3823 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3824
3825 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3826 return -EINVAL;
3827
3828 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3829
3830 return 0;
3831 }
3832
3833 static int nl80211_set_station_tdls(struct genl_info *info,
3834 struct station_parameters *params)
3835 {
3836 /* Dummy STA entry gets updated once the peer capabilities are known */
3837 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3838 params->ht_capa =
3839 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3840 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3841 params->vht_capa =
3842 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3843
3844 return nl80211_parse_sta_wme(info, params);
3845 }
3846
3847 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3848 {
3849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3850 struct net_device *dev = info->user_ptr[1];
3851 struct station_parameters params;
3852 u8 *mac_addr;
3853 int err;
3854
3855 memset(&params, 0, sizeof(params));
3856
3857 params.listen_interval = -1;
3858
3859 if (!rdev->ops->change_station)
3860 return -EOPNOTSUPP;
3861
3862 if (info->attrs[NL80211_ATTR_STA_AID])
3863 return -EINVAL;
3864
3865 if (!info->attrs[NL80211_ATTR_MAC])
3866 return -EINVAL;
3867
3868 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3869
3870 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3871 params.supported_rates =
3872 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3873 params.supported_rates_len =
3874 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3875 }
3876
3877 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3878 params.capability =
3879 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3880 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3881 }
3882
3883 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3884 params.ext_capab =
3885 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3886 params.ext_capab_len =
3887 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3888 }
3889
3890 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3891 return -EINVAL;
3892
3893 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3894 return -EINVAL;
3895
3896 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3897 params.plink_action =
3898 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3899 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3900 return -EINVAL;
3901 }
3902
3903 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3904 params.plink_state =
3905 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3906 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3907 return -EINVAL;
3908 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3909 }
3910
3911 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3912 enum nl80211_mesh_power_mode pm = nla_get_u32(
3913 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3914
3915 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3916 pm > NL80211_MESH_POWER_MAX)
3917 return -EINVAL;
3918
3919 params.local_pm = pm;
3920 }
3921
3922 /* Include parameters for TDLS peer (will check later) */
3923 err = nl80211_set_station_tdls(info, &params);
3924 if (err)
3925 return err;
3926
3927 params.vlan = get_vlan(info, rdev);
3928 if (IS_ERR(params.vlan))
3929 return PTR_ERR(params.vlan);
3930
3931 switch (dev->ieee80211_ptr->iftype) {
3932 case NL80211_IFTYPE_AP:
3933 case NL80211_IFTYPE_AP_VLAN:
3934 case NL80211_IFTYPE_P2P_GO:
3935 case NL80211_IFTYPE_P2P_CLIENT:
3936 case NL80211_IFTYPE_STATION:
3937 case NL80211_IFTYPE_ADHOC:
3938 case NL80211_IFTYPE_MESH_POINT:
3939 break;
3940 default:
3941 err = -EOPNOTSUPP;
3942 goto out_put_vlan;
3943 }
3944
3945 /* driver will call cfg80211_check_station_change() */
3946 err = rdev_change_station(rdev, dev, mac_addr, &params);
3947
3948 out_put_vlan:
3949 if (params.vlan)
3950 dev_put(params.vlan);
3951
3952 return err;
3953 }
3954
3955 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3956 {
3957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3958 int err;
3959 struct net_device *dev = info->user_ptr[1];
3960 struct station_parameters params;
3961 u8 *mac_addr = NULL;
3962
3963 memset(&params, 0, sizeof(params));
3964
3965 if (!rdev->ops->add_station)
3966 return -EOPNOTSUPP;
3967
3968 if (!info->attrs[NL80211_ATTR_MAC])
3969 return -EINVAL;
3970
3971 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3972 return -EINVAL;
3973
3974 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3975 return -EINVAL;
3976
3977 if (!info->attrs[NL80211_ATTR_STA_AID])
3978 return -EINVAL;
3979
3980 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3981 params.supported_rates =
3982 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3983 params.supported_rates_len =
3984 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3985 params.listen_interval =
3986 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3987
3988 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3989 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3990 return -EINVAL;
3991
3992 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3993 params.capability =
3994 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3995 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3996 }
3997
3998 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3999 params.ext_capab =
4000 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4001 params.ext_capab_len =
4002 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4003 }
4004
4005 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4006 params.ht_capa =
4007 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4008
4009 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4010 params.vht_capa =
4011 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4012
4013 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4014 params.plink_action =
4015 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4016 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4017 return -EINVAL;
4018 }
4019
4020 err = nl80211_parse_sta_wme(info, &params);
4021 if (err)
4022 return err;
4023
4024 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4025 return -EINVAL;
4026
4027 /* When you run into this, adjust the code below for the new flag */
4028 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4029
4030 switch (dev->ieee80211_ptr->iftype) {
4031 case NL80211_IFTYPE_AP:
4032 case NL80211_IFTYPE_AP_VLAN:
4033 case NL80211_IFTYPE_P2P_GO:
4034 /* ignore WME attributes if iface/sta is not capable */
4035 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4036 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4037 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4038
4039 /* TDLS peers cannot be added */
4040 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4041 return -EINVAL;
4042 /* but don't bother the driver with it */
4043 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4044
4045 /* allow authenticated/associated only if driver handles it */
4046 if (!(rdev->wiphy.features &
4047 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4048 params.sta_flags_mask &
4049 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4050 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4051 return -EINVAL;
4052
4053 /* must be last in here for error handling */
4054 params.vlan = get_vlan(info, rdev);
4055 if (IS_ERR(params.vlan))
4056 return PTR_ERR(params.vlan);
4057 break;
4058 case NL80211_IFTYPE_MESH_POINT:
4059 /* ignore uAPSD data */
4060 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4061
4062 /* associated is disallowed */
4063 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4064 return -EINVAL;
4065 /* TDLS peers cannot be added */
4066 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4067 return -EINVAL;
4068 break;
4069 case NL80211_IFTYPE_STATION:
4070 case NL80211_IFTYPE_P2P_CLIENT:
4071 /* ignore uAPSD data */
4072 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4073
4074 /* these are disallowed */
4075 if (params.sta_flags_mask &
4076 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4077 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4078 return -EINVAL;
4079 /* Only TDLS peers can be added */
4080 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4081 return -EINVAL;
4082 /* Can only add if TDLS ... */
4083 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4084 return -EOPNOTSUPP;
4085 /* ... with external setup is supported */
4086 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4087 return -EOPNOTSUPP;
4088 /*
4089 * Older wpa_supplicant versions always mark the TDLS peer
4090 * as authorized, but it shouldn't yet be.
4091 */
4092 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4093 break;
4094 default:
4095 return -EOPNOTSUPP;
4096 }
4097
4098 /* be aware of params.vlan when changing code here */
4099
4100 err = rdev_add_station(rdev, dev, mac_addr, &params);
4101
4102 if (params.vlan)
4103 dev_put(params.vlan);
4104 return err;
4105 }
4106
4107 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4108 {
4109 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4110 struct net_device *dev = info->user_ptr[1];
4111 u8 *mac_addr = NULL;
4112
4113 if (info->attrs[NL80211_ATTR_MAC])
4114 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4115
4116 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4117 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4118 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4119 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4120 return -EINVAL;
4121
4122 if (!rdev->ops->del_station)
4123 return -EOPNOTSUPP;
4124
4125 return rdev_del_station(rdev, dev, mac_addr);
4126 }
4127
4128 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4129 int flags, struct net_device *dev,
4130 u8 *dst, u8 *next_hop,
4131 struct mpath_info *pinfo)
4132 {
4133 void *hdr;
4134 struct nlattr *pinfoattr;
4135
4136 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4137 if (!hdr)
4138 return -1;
4139
4140 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4141 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4142 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4143 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4144 goto nla_put_failure;
4145
4146 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4147 if (!pinfoattr)
4148 goto nla_put_failure;
4149 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4150 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4151 pinfo->frame_qlen))
4152 goto nla_put_failure;
4153 if (((pinfo->filled & MPATH_INFO_SN) &&
4154 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4155 ((pinfo->filled & MPATH_INFO_METRIC) &&
4156 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4157 pinfo->metric)) ||
4158 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4159 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4160 pinfo->exptime)) ||
4161 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4162 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4163 pinfo->flags)) ||
4164 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4165 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4166 pinfo->discovery_timeout)) ||
4167 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4168 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4169 pinfo->discovery_retries)))
4170 goto nla_put_failure;
4171
4172 nla_nest_end(msg, pinfoattr);
4173
4174 return genlmsg_end(msg, hdr);
4175
4176 nla_put_failure:
4177 genlmsg_cancel(msg, hdr);
4178 return -EMSGSIZE;
4179 }
4180
4181 static int nl80211_dump_mpath(struct sk_buff *skb,
4182 struct netlink_callback *cb)
4183 {
4184 struct mpath_info pinfo;
4185 struct cfg80211_registered_device *dev;
4186 struct wireless_dev *wdev;
4187 u8 dst[ETH_ALEN];
4188 u8 next_hop[ETH_ALEN];
4189 int path_idx = cb->args[2];
4190 int err;
4191
4192 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4193 if (err)
4194 return err;
4195
4196 if (!dev->ops->dump_mpath) {
4197 err = -EOPNOTSUPP;
4198 goto out_err;
4199 }
4200
4201 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4202 err = -EOPNOTSUPP;
4203 goto out_err;
4204 }
4205
4206 while (1) {
4207 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4208 next_hop, &pinfo);
4209 if (err == -ENOENT)
4210 break;
4211 if (err)
4212 goto out_err;
4213
4214 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4215 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4216 wdev->netdev, dst, next_hop,
4217 &pinfo) < 0)
4218 goto out;
4219
4220 path_idx++;
4221 }
4222
4223
4224 out:
4225 cb->args[2] = path_idx;
4226 err = skb->len;
4227 out_err:
4228 nl80211_finish_wdev_dump(dev);
4229 return err;
4230 }
4231
4232 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4233 {
4234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4235 int err;
4236 struct net_device *dev = info->user_ptr[1];
4237 struct mpath_info pinfo;
4238 struct sk_buff *msg;
4239 u8 *dst = NULL;
4240 u8 next_hop[ETH_ALEN];
4241
4242 memset(&pinfo, 0, sizeof(pinfo));
4243
4244 if (!info->attrs[NL80211_ATTR_MAC])
4245 return -EINVAL;
4246
4247 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4248
4249 if (!rdev->ops->get_mpath)
4250 return -EOPNOTSUPP;
4251
4252 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4253 return -EOPNOTSUPP;
4254
4255 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4256 if (err)
4257 return err;
4258
4259 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4260 if (!msg)
4261 return -ENOMEM;
4262
4263 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4264 dev, dst, next_hop, &pinfo) < 0) {
4265 nlmsg_free(msg);
4266 return -ENOBUFS;
4267 }
4268
4269 return genlmsg_reply(msg, info);
4270 }
4271
4272 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4273 {
4274 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4275 struct net_device *dev = info->user_ptr[1];
4276 u8 *dst = NULL;
4277 u8 *next_hop = NULL;
4278
4279 if (!info->attrs[NL80211_ATTR_MAC])
4280 return -EINVAL;
4281
4282 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4283 return -EINVAL;
4284
4285 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4286 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4287
4288 if (!rdev->ops->change_mpath)
4289 return -EOPNOTSUPP;
4290
4291 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4292 return -EOPNOTSUPP;
4293
4294 return rdev_change_mpath(rdev, dev, dst, next_hop);
4295 }
4296
4297 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4298 {
4299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4300 struct net_device *dev = info->user_ptr[1];
4301 u8 *dst = NULL;
4302 u8 *next_hop = NULL;
4303
4304 if (!info->attrs[NL80211_ATTR_MAC])
4305 return -EINVAL;
4306
4307 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4308 return -EINVAL;
4309
4310 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4311 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4312
4313 if (!rdev->ops->add_mpath)
4314 return -EOPNOTSUPP;
4315
4316 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4317 return -EOPNOTSUPP;
4318
4319 return rdev_add_mpath(rdev, dev, dst, next_hop);
4320 }
4321
4322 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4323 {
4324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4325 struct net_device *dev = info->user_ptr[1];
4326 u8 *dst = NULL;
4327
4328 if (info->attrs[NL80211_ATTR_MAC])
4329 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4330
4331 if (!rdev->ops->del_mpath)
4332 return -EOPNOTSUPP;
4333
4334 return rdev_del_mpath(rdev, dev, dst);
4335 }
4336
4337 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4338 {
4339 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4340 struct net_device *dev = info->user_ptr[1];
4341 struct bss_parameters params;
4342
4343 memset(&params, 0, sizeof(params));
4344 /* default to not changing parameters */
4345 params.use_cts_prot = -1;
4346 params.use_short_preamble = -1;
4347 params.use_short_slot_time = -1;
4348 params.ap_isolate = -1;
4349 params.ht_opmode = -1;
4350 params.p2p_ctwindow = -1;
4351 params.p2p_opp_ps = -1;
4352
4353 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4354 params.use_cts_prot =
4355 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4356 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4357 params.use_short_preamble =
4358 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4359 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4360 params.use_short_slot_time =
4361 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4362 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4363 params.basic_rates =
4364 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4365 params.basic_rates_len =
4366 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4367 }
4368 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4369 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4370 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4371 params.ht_opmode =
4372 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4373
4374 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4375 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4376 return -EINVAL;
4377 params.p2p_ctwindow =
4378 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4379 if (params.p2p_ctwindow < 0)
4380 return -EINVAL;
4381 if (params.p2p_ctwindow != 0 &&
4382 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4383 return -EINVAL;
4384 }
4385
4386 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4387 u8 tmp;
4388
4389 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4390 return -EINVAL;
4391 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4392 if (tmp > 1)
4393 return -EINVAL;
4394 params.p2p_opp_ps = tmp;
4395 if (params.p2p_opp_ps &&
4396 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4397 return -EINVAL;
4398 }
4399
4400 if (!rdev->ops->change_bss)
4401 return -EOPNOTSUPP;
4402
4403 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4404 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4405 return -EOPNOTSUPP;
4406
4407 return rdev_change_bss(rdev, dev, &params);
4408 }
4409
4410 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4411 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4412 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4413 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4414 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4415 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4416 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4417 };
4418
4419 static int parse_reg_rule(struct nlattr *tb[],
4420 struct ieee80211_reg_rule *reg_rule)
4421 {
4422 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4423 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4424
4425 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4426 return -EINVAL;
4427 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4428 return -EINVAL;
4429 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4430 return -EINVAL;
4431 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4432 return -EINVAL;
4433 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4434 return -EINVAL;
4435
4436 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4437
4438 freq_range->start_freq_khz =
4439 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4440 freq_range->end_freq_khz =
4441 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4442 freq_range->max_bandwidth_khz =
4443 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4444
4445 power_rule->max_eirp =
4446 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4447
4448 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4449 power_rule->max_antenna_gain =
4450 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4451
4452 return 0;
4453 }
4454
4455 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4456 {
4457 int r;
4458 char *data = NULL;
4459 enum nl80211_user_reg_hint_type user_reg_hint_type;
4460
4461 /*
4462 * You should only get this when cfg80211 hasn't yet initialized
4463 * completely when built-in to the kernel right between the time
4464 * window between nl80211_init() and regulatory_init(), if that is
4465 * even possible.
4466 */
4467 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4468 return -EINPROGRESS;
4469
4470 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4471 return -EINVAL;
4472
4473 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4474
4475 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4476 user_reg_hint_type =
4477 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4478 else
4479 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4480
4481 switch (user_reg_hint_type) {
4482 case NL80211_USER_REG_HINT_USER:
4483 case NL80211_USER_REG_HINT_CELL_BASE:
4484 break;
4485 default:
4486 return -EINVAL;
4487 }
4488
4489 r = regulatory_hint_user(data, user_reg_hint_type);
4490
4491 return r;
4492 }
4493
4494 static int nl80211_get_mesh_config(struct sk_buff *skb,
4495 struct genl_info *info)
4496 {
4497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4498 struct net_device *dev = info->user_ptr[1];
4499 struct wireless_dev *wdev = dev->ieee80211_ptr;
4500 struct mesh_config cur_params;
4501 int err = 0;
4502 void *hdr;
4503 struct nlattr *pinfoattr;
4504 struct sk_buff *msg;
4505
4506 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4507 return -EOPNOTSUPP;
4508
4509 if (!rdev->ops->get_mesh_config)
4510 return -EOPNOTSUPP;
4511
4512 wdev_lock(wdev);
4513 /* If not connected, get default parameters */
4514 if (!wdev->mesh_id_len)
4515 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4516 else
4517 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4518 wdev_unlock(wdev);
4519
4520 if (err)
4521 return err;
4522
4523 /* Draw up a netlink message to send back */
4524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4525 if (!msg)
4526 return -ENOMEM;
4527 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4528 NL80211_CMD_GET_MESH_CONFIG);
4529 if (!hdr)
4530 goto out;
4531 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4532 if (!pinfoattr)
4533 goto nla_put_failure;
4534 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4535 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4536 cur_params.dot11MeshRetryTimeout) ||
4537 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4538 cur_params.dot11MeshConfirmTimeout) ||
4539 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4540 cur_params.dot11MeshHoldingTimeout) ||
4541 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4542 cur_params.dot11MeshMaxPeerLinks) ||
4543 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4544 cur_params.dot11MeshMaxRetries) ||
4545 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4546 cur_params.dot11MeshTTL) ||
4547 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4548 cur_params.element_ttl) ||
4549 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4550 cur_params.auto_open_plinks) ||
4551 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4552 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4553 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4554 cur_params.dot11MeshHWMPmaxPREQretries) ||
4555 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4556 cur_params.path_refresh_time) ||
4557 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4558 cur_params.min_discovery_timeout) ||
4559 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4560 cur_params.dot11MeshHWMPactivePathTimeout) ||
4561 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4562 cur_params.dot11MeshHWMPpreqMinInterval) ||
4563 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4564 cur_params.dot11MeshHWMPperrMinInterval) ||
4565 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4566 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4567 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4568 cur_params.dot11MeshHWMPRootMode) ||
4569 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4570 cur_params.dot11MeshHWMPRannInterval) ||
4571 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4572 cur_params.dot11MeshGateAnnouncementProtocol) ||
4573 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4574 cur_params.dot11MeshForwarding) ||
4575 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4576 cur_params.rssi_threshold) ||
4577 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4578 cur_params.ht_opmode) ||
4579 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4580 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4581 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4582 cur_params.dot11MeshHWMProotInterval) ||
4583 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4584 cur_params.dot11MeshHWMPconfirmationInterval) ||
4585 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4586 cur_params.power_mode) ||
4587 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4588 cur_params.dot11MeshAwakeWindowDuration))
4589 goto nla_put_failure;
4590 nla_nest_end(msg, pinfoattr);
4591 genlmsg_end(msg, hdr);
4592 return genlmsg_reply(msg, info);
4593
4594 nla_put_failure:
4595 genlmsg_cancel(msg, hdr);
4596 out:
4597 nlmsg_free(msg);
4598 return -ENOBUFS;
4599 }
4600
4601 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4602 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4603 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4604 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4605 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4606 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4607 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4608 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4609 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4610 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4611 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4612 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4613 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4614 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4615 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4616 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4617 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4618 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4619 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4620 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4621 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4622 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4623 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4624 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4625 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4626 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4627 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4628 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4629 };
4630
4631 static const struct nla_policy
4632 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4633 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4634 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4635 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4636 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4637 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4638 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4639 .len = IEEE80211_MAX_DATA_LEN },
4640 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4641 };
4642
4643 static int nl80211_parse_mesh_config(struct genl_info *info,
4644 struct mesh_config *cfg,
4645 u32 *mask_out)
4646 {
4647 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4648 u32 mask = 0;
4649
4650 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4651 do { \
4652 if (tb[attr]) { \
4653 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4654 return -EINVAL; \
4655 cfg->param = fn(tb[attr]); \
4656 mask |= (1 << (attr - 1)); \
4657 } \
4658 } while (0)
4659
4660
4661 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4662 return -EINVAL;
4663 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4664 info->attrs[NL80211_ATTR_MESH_CONFIG],
4665 nl80211_meshconf_params_policy))
4666 return -EINVAL;
4667
4668 /* This makes sure that there aren't more than 32 mesh config
4669 * parameters (otherwise our bitfield scheme would not work.) */
4670 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4671
4672 /* Fill in the params struct */
4673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4674 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4675 nla_get_u16);
4676 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4677 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4678 nla_get_u16);
4679 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4680 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4681 nla_get_u16);
4682 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4683 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4684 nla_get_u16);
4685 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4686 mask, NL80211_MESHCONF_MAX_RETRIES,
4687 nla_get_u8);
4688 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4689 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4690 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4691 mask, NL80211_MESHCONF_ELEMENT_TTL,
4692 nla_get_u8);
4693 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4694 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4695 nla_get_u8);
4696 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4697 1, 255, mask,
4698 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4699 nla_get_u32);
4700 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4701 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4702 nla_get_u8);
4703 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4704 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4705 nla_get_u32);
4706 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4707 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4708 nla_get_u16);
4709 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4710 1, 65535, mask,
4711 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4712 nla_get_u32);
4713 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4714 1, 65535, mask,
4715 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4716 nla_get_u16);
4717 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4718 1, 65535, mask,
4719 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4720 nla_get_u16);
4721 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4722 dot11MeshHWMPnetDiameterTraversalTime,
4723 1, 65535, mask,
4724 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4725 nla_get_u16);
4726 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4727 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4728 nla_get_u8);
4729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4730 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4731 nla_get_u16);
4732 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4733 dot11MeshGateAnnouncementProtocol, 0, 1,
4734 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4735 nla_get_u8);
4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4737 mask, NL80211_MESHCONF_FORWARDING,
4738 nla_get_u8);
4739 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4740 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4741 nla_get_u32);
4742 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4743 mask, NL80211_MESHCONF_HT_OPMODE,
4744 nla_get_u16);
4745 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4746 1, 65535, mask,
4747 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4748 nla_get_u32);
4749 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4750 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4751 nla_get_u16);
4752 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4753 dot11MeshHWMPconfirmationInterval,
4754 1, 65535, mask,
4755 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4756 nla_get_u16);
4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4758 NL80211_MESH_POWER_ACTIVE,
4759 NL80211_MESH_POWER_MAX,
4760 mask, NL80211_MESHCONF_POWER_MODE,
4761 nla_get_u32);
4762 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4763 0, 65535, mask,
4764 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4765 if (mask_out)
4766 *mask_out = mask;
4767
4768 return 0;
4769
4770 #undef FILL_IN_MESH_PARAM_IF_SET
4771 }
4772
4773 static int nl80211_parse_mesh_setup(struct genl_info *info,
4774 struct mesh_setup *setup)
4775 {
4776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4777 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4778
4779 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4780 return -EINVAL;
4781 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4782 info->attrs[NL80211_ATTR_MESH_SETUP],
4783 nl80211_mesh_setup_params_policy))
4784 return -EINVAL;
4785
4786 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4787 setup->sync_method =
4788 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4789 IEEE80211_SYNC_METHOD_VENDOR :
4790 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4791
4792 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4793 setup->path_sel_proto =
4794 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4795 IEEE80211_PATH_PROTOCOL_VENDOR :
4796 IEEE80211_PATH_PROTOCOL_HWMP;
4797
4798 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4799 setup->path_metric =
4800 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4801 IEEE80211_PATH_METRIC_VENDOR :
4802 IEEE80211_PATH_METRIC_AIRTIME;
4803
4804
4805 if (tb[NL80211_MESH_SETUP_IE]) {
4806 struct nlattr *ieattr =
4807 tb[NL80211_MESH_SETUP_IE];
4808 if (!is_valid_ie_attr(ieattr))
4809 return -EINVAL;
4810 setup->ie = nla_data(ieattr);
4811 setup->ie_len = nla_len(ieattr);
4812 }
4813 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4814 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4815 return -EINVAL;
4816 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4817 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4818 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4819 if (setup->is_secure)
4820 setup->user_mpm = true;
4821
4822 return 0;
4823 }
4824
4825 static int nl80211_update_mesh_config(struct sk_buff *skb,
4826 struct genl_info *info)
4827 {
4828 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4829 struct net_device *dev = info->user_ptr[1];
4830 struct wireless_dev *wdev = dev->ieee80211_ptr;
4831 struct mesh_config cfg;
4832 u32 mask;
4833 int err;
4834
4835 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4836 return -EOPNOTSUPP;
4837
4838 if (!rdev->ops->update_mesh_config)
4839 return -EOPNOTSUPP;
4840
4841 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4842 if (err)
4843 return err;
4844
4845 wdev_lock(wdev);
4846 if (!wdev->mesh_id_len)
4847 err = -ENOLINK;
4848
4849 if (!err)
4850 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4851
4852 wdev_unlock(wdev);
4853
4854 return err;
4855 }
4856
4857 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4858 {
4859 const struct ieee80211_regdomain *regdom;
4860 struct sk_buff *msg;
4861 void *hdr = NULL;
4862 struct nlattr *nl_reg_rules;
4863 unsigned int i;
4864 int err = -EINVAL;
4865
4866 mutex_lock(&cfg80211_mutex);
4867
4868 if (!cfg80211_regdomain)
4869 goto out;
4870
4871 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4872 if (!msg) {
4873 err = -ENOBUFS;
4874 goto out;
4875 }
4876
4877 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4878 NL80211_CMD_GET_REG);
4879 if (!hdr)
4880 goto put_failure;
4881
4882 if (reg_last_request_cell_base() &&
4883 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4884 NL80211_USER_REG_HINT_CELL_BASE))
4885 goto nla_put_failure;
4886
4887 rcu_read_lock();
4888 regdom = rcu_dereference(cfg80211_regdomain);
4889
4890 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4891 (regdom->dfs_region &&
4892 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4893 goto nla_put_failure_rcu;
4894
4895 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4896 if (!nl_reg_rules)
4897 goto nla_put_failure_rcu;
4898
4899 for (i = 0; i < regdom->n_reg_rules; i++) {
4900 struct nlattr *nl_reg_rule;
4901 const struct ieee80211_reg_rule *reg_rule;
4902 const struct ieee80211_freq_range *freq_range;
4903 const struct ieee80211_power_rule *power_rule;
4904
4905 reg_rule = &regdom->reg_rules[i];
4906 freq_range = &reg_rule->freq_range;
4907 power_rule = &reg_rule->power_rule;
4908
4909 nl_reg_rule = nla_nest_start(msg, i);
4910 if (!nl_reg_rule)
4911 goto nla_put_failure_rcu;
4912
4913 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4914 reg_rule->flags) ||
4915 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4916 freq_range->start_freq_khz) ||
4917 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4918 freq_range->end_freq_khz) ||
4919 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4920 freq_range->max_bandwidth_khz) ||
4921 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4922 power_rule->max_antenna_gain) ||
4923 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4924 power_rule->max_eirp))
4925 goto nla_put_failure_rcu;
4926
4927 nla_nest_end(msg, nl_reg_rule);
4928 }
4929 rcu_read_unlock();
4930
4931 nla_nest_end(msg, nl_reg_rules);
4932
4933 genlmsg_end(msg, hdr);
4934 err = genlmsg_reply(msg, info);
4935 goto out;
4936
4937 nla_put_failure_rcu:
4938 rcu_read_unlock();
4939 nla_put_failure:
4940 genlmsg_cancel(msg, hdr);
4941 put_failure:
4942 nlmsg_free(msg);
4943 err = -EMSGSIZE;
4944 out:
4945 mutex_unlock(&cfg80211_mutex);
4946 return err;
4947 }
4948
4949 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4950 {
4951 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4952 struct nlattr *nl_reg_rule;
4953 char *alpha2 = NULL;
4954 int rem_reg_rules = 0, r = 0;
4955 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4956 u8 dfs_region = 0;
4957 struct ieee80211_regdomain *rd = NULL;
4958
4959 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4960 return -EINVAL;
4961
4962 if (!info->attrs[NL80211_ATTR_REG_RULES])
4963 return -EINVAL;
4964
4965 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4966
4967 if (info->attrs[NL80211_ATTR_DFS_REGION])
4968 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4969
4970 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4971 rem_reg_rules) {
4972 num_rules++;
4973 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4974 return -EINVAL;
4975 }
4976
4977 size_of_regd = sizeof(struct ieee80211_regdomain) +
4978 num_rules * sizeof(struct ieee80211_reg_rule);
4979
4980 rd = kzalloc(size_of_regd, GFP_KERNEL);
4981 if (!rd)
4982 return -ENOMEM;
4983
4984 rd->n_reg_rules = num_rules;
4985 rd->alpha2[0] = alpha2[0];
4986 rd->alpha2[1] = alpha2[1];
4987
4988 /*
4989 * Disable DFS master mode if the DFS region was
4990 * not supported or known on this kernel.
4991 */
4992 if (reg_supported_dfs_region(dfs_region))
4993 rd->dfs_region = dfs_region;
4994
4995 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4996 rem_reg_rules) {
4997 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4998 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4999 reg_rule_policy);
5000 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5001 if (r)
5002 goto bad_reg;
5003
5004 rule_idx++;
5005
5006 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5007 r = -EINVAL;
5008 goto bad_reg;
5009 }
5010 }
5011
5012 mutex_lock(&cfg80211_mutex);
5013
5014 r = set_regdom(rd);
5015 /* set_regdom took ownership */
5016 rd = NULL;
5017 mutex_unlock(&cfg80211_mutex);
5018
5019 bad_reg:
5020 kfree(rd);
5021 return r;
5022 }
5023
5024 static int validate_scan_freqs(struct nlattr *freqs)
5025 {
5026 struct nlattr *attr1, *attr2;
5027 int n_channels = 0, tmp1, tmp2;
5028
5029 nla_for_each_nested(attr1, freqs, tmp1) {
5030 n_channels++;
5031 /*
5032 * Some hardware has a limited channel list for
5033 * scanning, and it is pretty much nonsensical
5034 * to scan for a channel twice, so disallow that
5035 * and don't require drivers to check that the
5036 * channel list they get isn't longer than what
5037 * they can scan, as long as they can scan all
5038 * the channels they registered at once.
5039 */
5040 nla_for_each_nested(attr2, freqs, tmp2)
5041 if (attr1 != attr2 &&
5042 nla_get_u32(attr1) == nla_get_u32(attr2))
5043 return 0;
5044 }
5045
5046 return n_channels;
5047 }
5048
5049 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5050 {
5051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5052 struct wireless_dev *wdev = info->user_ptr[1];
5053 struct cfg80211_scan_request *request;
5054 struct nlattr *attr;
5055 struct wiphy *wiphy;
5056 int err, tmp, n_ssids = 0, n_channels, i;
5057 size_t ie_len;
5058
5059 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5060 return -EINVAL;
5061
5062 wiphy = &rdev->wiphy;
5063
5064 if (!rdev->ops->scan)
5065 return -EOPNOTSUPP;
5066
5067 mutex_lock(&rdev->sched_scan_mtx);
5068 if (rdev->scan_req) {
5069 err = -EBUSY;
5070 goto unlock;
5071 }
5072
5073 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5074 n_channels = validate_scan_freqs(
5075 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5076 if (!n_channels) {
5077 err = -EINVAL;
5078 goto unlock;
5079 }
5080 } else {
5081 enum ieee80211_band band;
5082 n_channels = 0;
5083
5084 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5085 if (wiphy->bands[band])
5086 n_channels += wiphy->bands[band]->n_channels;
5087 }
5088
5089 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5090 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5091 n_ssids++;
5092
5093 if (n_ssids > wiphy->max_scan_ssids) {
5094 err = -EINVAL;
5095 goto unlock;
5096 }
5097
5098 if (info->attrs[NL80211_ATTR_IE])
5099 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5100 else
5101 ie_len = 0;
5102
5103 if (ie_len > wiphy->max_scan_ie_len) {
5104 err = -EINVAL;
5105 goto unlock;
5106 }
5107
5108 request = kzalloc(sizeof(*request)
5109 + sizeof(*request->ssids) * n_ssids
5110 + sizeof(*request->channels) * n_channels
5111 + ie_len, GFP_KERNEL);
5112 if (!request) {
5113 err = -ENOMEM;
5114 goto unlock;
5115 }
5116
5117 if (n_ssids)
5118 request->ssids = (void *)&request->channels[n_channels];
5119 request->n_ssids = n_ssids;
5120 if (ie_len) {
5121 if (request->ssids)
5122 request->ie = (void *)(request->ssids + n_ssids);
5123 else
5124 request->ie = (void *)(request->channels + n_channels);
5125 }
5126
5127 i = 0;
5128 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5129 /* user specified, bail out if channel not found */
5130 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5131 struct ieee80211_channel *chan;
5132
5133 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5134
5135 if (!chan) {
5136 err = -EINVAL;
5137 goto out_free;
5138 }
5139
5140 /* ignore disabled channels */
5141 if (chan->flags & IEEE80211_CHAN_DISABLED)
5142 continue;
5143
5144 request->channels[i] = chan;
5145 i++;
5146 }
5147 } else {
5148 enum ieee80211_band band;
5149
5150 /* all channels */
5151 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5152 int j;
5153 if (!wiphy->bands[band])
5154 continue;
5155 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5156 struct ieee80211_channel *chan;
5157
5158 chan = &wiphy->bands[band]->channels[j];
5159
5160 if (chan->flags & IEEE80211_CHAN_DISABLED)
5161 continue;
5162
5163 request->channels[i] = chan;
5164 i++;
5165 }
5166 }
5167 }
5168
5169 if (!i) {
5170 err = -EINVAL;
5171 goto out_free;
5172 }
5173
5174 request->n_channels = i;
5175
5176 i = 0;
5177 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5178 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5179 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5180 err = -EINVAL;
5181 goto out_free;
5182 }
5183 request->ssids[i].ssid_len = nla_len(attr);
5184 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5185 i++;
5186 }
5187 }
5188
5189 if (info->attrs[NL80211_ATTR_IE]) {
5190 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5191 memcpy((void *)request->ie,
5192 nla_data(info->attrs[NL80211_ATTR_IE]),
5193 request->ie_len);
5194 }
5195
5196 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5197 if (wiphy->bands[i])
5198 request->rates[i] =
5199 (1 << wiphy->bands[i]->n_bitrates) - 1;
5200
5201 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5202 nla_for_each_nested(attr,
5203 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5204 tmp) {
5205 enum ieee80211_band band = nla_type(attr);
5206
5207 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5208 err = -EINVAL;
5209 goto out_free;
5210 }
5211 err = ieee80211_get_ratemask(wiphy->bands[band],
5212 nla_data(attr),
5213 nla_len(attr),
5214 &request->rates[band]);
5215 if (err)
5216 goto out_free;
5217 }
5218 }
5219
5220 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5221 request->flags = nla_get_u32(
5222 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5223 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5224 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5225 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5226 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5227 err = -EOPNOTSUPP;
5228 goto out_free;
5229 }
5230 }
5231
5232 request->no_cck =
5233 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5234
5235 request->wdev = wdev;
5236 request->wiphy = &rdev->wiphy;
5237 request->scan_start = jiffies;
5238
5239 rdev->scan_req = request;
5240 err = rdev_scan(rdev, request);
5241
5242 if (!err) {
5243 nl80211_send_scan_start(rdev, wdev);
5244 if (wdev->netdev)
5245 dev_hold(wdev->netdev);
5246 } else {
5247 out_free:
5248 rdev->scan_req = NULL;
5249 kfree(request);
5250 }
5251
5252 unlock:
5253 mutex_unlock(&rdev->sched_scan_mtx);
5254 return err;
5255 }
5256
5257 static int nl80211_start_sched_scan(struct sk_buff *skb,
5258 struct genl_info *info)
5259 {
5260 struct cfg80211_sched_scan_request *request;
5261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5262 struct net_device *dev = info->user_ptr[1];
5263 struct nlattr *attr;
5264 struct wiphy *wiphy;
5265 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5266 u32 interval;
5267 enum ieee80211_band band;
5268 size_t ie_len;
5269 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5270
5271 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5272 !rdev->ops->sched_scan_start)
5273 return -EOPNOTSUPP;
5274
5275 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5276 return -EINVAL;
5277
5278 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5279 return -EINVAL;
5280
5281 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5282 if (interval == 0)
5283 return -EINVAL;
5284
5285 wiphy = &rdev->wiphy;
5286
5287 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5288 n_channels = validate_scan_freqs(
5289 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5290 if (!n_channels)
5291 return -EINVAL;
5292 } else {
5293 n_channels = 0;
5294
5295 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5296 if (wiphy->bands[band])
5297 n_channels += wiphy->bands[band]->n_channels;
5298 }
5299
5300 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5301 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5302 tmp)
5303 n_ssids++;
5304
5305 if (n_ssids > wiphy->max_sched_scan_ssids)
5306 return -EINVAL;
5307
5308 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5309 nla_for_each_nested(attr,
5310 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5311 tmp)
5312 n_match_sets++;
5313
5314 if (n_match_sets > wiphy->max_match_sets)
5315 return -EINVAL;
5316
5317 if (info->attrs[NL80211_ATTR_IE])
5318 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5319 else
5320 ie_len = 0;
5321
5322 if (ie_len > wiphy->max_sched_scan_ie_len)
5323 return -EINVAL;
5324
5325 mutex_lock(&rdev->sched_scan_mtx);
5326
5327 if (rdev->sched_scan_req) {
5328 err = -EINPROGRESS;
5329 goto out;
5330 }
5331
5332 request = kzalloc(sizeof(*request)
5333 + sizeof(*request->ssids) * n_ssids
5334 + sizeof(*request->match_sets) * n_match_sets
5335 + sizeof(*request->channels) * n_channels
5336 + ie_len, GFP_KERNEL);
5337 if (!request) {
5338 err = -ENOMEM;
5339 goto out;
5340 }
5341
5342 if (n_ssids)
5343 request->ssids = (void *)&request->channels[n_channels];
5344 request->n_ssids = n_ssids;
5345 if (ie_len) {
5346 if (request->ssids)
5347 request->ie = (void *)(request->ssids + n_ssids);
5348 else
5349 request->ie = (void *)(request->channels + n_channels);
5350 }
5351
5352 if (n_match_sets) {
5353 if (request->ie)
5354 request->match_sets = (void *)(request->ie + ie_len);
5355 else if (request->ssids)
5356 request->match_sets =
5357 (void *)(request->ssids + n_ssids);
5358 else
5359 request->match_sets =
5360 (void *)(request->channels + n_channels);
5361 }
5362 request->n_match_sets = n_match_sets;
5363
5364 i = 0;
5365 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5366 /* user specified, bail out if channel not found */
5367 nla_for_each_nested(attr,
5368 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5369 tmp) {
5370 struct ieee80211_channel *chan;
5371
5372 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5373
5374 if (!chan) {
5375 err = -EINVAL;
5376 goto out_free;
5377 }
5378
5379 /* ignore disabled channels */
5380 if (chan->flags & IEEE80211_CHAN_DISABLED)
5381 continue;
5382
5383 request->channels[i] = chan;
5384 i++;
5385 }
5386 } else {
5387 /* all channels */
5388 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5389 int j;
5390 if (!wiphy->bands[band])
5391 continue;
5392 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5393 struct ieee80211_channel *chan;
5394
5395 chan = &wiphy->bands[band]->channels[j];
5396
5397 if (chan->flags & IEEE80211_CHAN_DISABLED)
5398 continue;
5399
5400 request->channels[i] = chan;
5401 i++;
5402 }
5403 }
5404 }
5405
5406 if (!i) {
5407 err = -EINVAL;
5408 goto out_free;
5409 }
5410
5411 request->n_channels = i;
5412
5413 i = 0;
5414 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5415 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5416 tmp) {
5417 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5418 err = -EINVAL;
5419 goto out_free;
5420 }
5421 request->ssids[i].ssid_len = nla_len(attr);
5422 memcpy(request->ssids[i].ssid, nla_data(attr),
5423 nla_len(attr));
5424 i++;
5425 }
5426 }
5427
5428 i = 0;
5429 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5430 nla_for_each_nested(attr,
5431 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5432 tmp) {
5433 struct nlattr *ssid, *rssi;
5434
5435 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5436 nla_data(attr), nla_len(attr),
5437 nl80211_match_policy);
5438 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5439 if (ssid) {
5440 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5441 err = -EINVAL;
5442 goto out_free;
5443 }
5444 memcpy(request->match_sets[i].ssid.ssid,
5445 nla_data(ssid), nla_len(ssid));
5446 request->match_sets[i].ssid.ssid_len =
5447 nla_len(ssid);
5448 }
5449 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5450 if (rssi)
5451 request->rssi_thold = nla_get_u32(rssi);
5452 else
5453 request->rssi_thold =
5454 NL80211_SCAN_RSSI_THOLD_OFF;
5455 i++;
5456 }
5457 }
5458
5459 if (info->attrs[NL80211_ATTR_IE]) {
5460 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5461 memcpy((void *)request->ie,
5462 nla_data(info->attrs[NL80211_ATTR_IE]),
5463 request->ie_len);
5464 }
5465
5466 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5467 request->flags = nla_get_u32(
5468 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5469 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5470 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5471 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5472 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5473 err = -EOPNOTSUPP;
5474 goto out_free;
5475 }
5476 }
5477
5478 request->dev = dev;
5479 request->wiphy = &rdev->wiphy;
5480 request->interval = interval;
5481 request->scan_start = jiffies;
5482
5483 err = rdev_sched_scan_start(rdev, dev, request);
5484 if (!err) {
5485 rdev->sched_scan_req = request;
5486 nl80211_send_sched_scan(rdev, dev,
5487 NL80211_CMD_START_SCHED_SCAN);
5488 goto out;
5489 }
5490
5491 out_free:
5492 kfree(request);
5493 out:
5494 mutex_unlock(&rdev->sched_scan_mtx);
5495 return err;
5496 }
5497
5498 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5499 struct genl_info *info)
5500 {
5501 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5502 int err;
5503
5504 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5505 !rdev->ops->sched_scan_stop)
5506 return -EOPNOTSUPP;
5507
5508 mutex_lock(&rdev->sched_scan_mtx);
5509 err = __cfg80211_stop_sched_scan(rdev, false);
5510 mutex_unlock(&rdev->sched_scan_mtx);
5511
5512 return err;
5513 }
5514
5515 static int nl80211_start_radar_detection(struct sk_buff *skb,
5516 struct genl_info *info)
5517 {
5518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5519 struct net_device *dev = info->user_ptr[1];
5520 struct wireless_dev *wdev = dev->ieee80211_ptr;
5521 struct cfg80211_chan_def chandef;
5522 int err;
5523
5524 err = nl80211_parse_chandef(rdev, info, &chandef);
5525 if (err)
5526 return err;
5527
5528 if (wdev->cac_started)
5529 return -EBUSY;
5530
5531 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5532 if (err < 0)
5533 return err;
5534
5535 if (err == 0)
5536 return -EINVAL;
5537
5538 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5539 return -EINVAL;
5540
5541 if (!rdev->ops->start_radar_detection)
5542 return -EOPNOTSUPP;
5543
5544 mutex_lock(&rdev->devlist_mtx);
5545 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5546 chandef.chan, CHAN_MODE_SHARED,
5547 BIT(chandef.width));
5548 if (err)
5549 goto err_locked;
5550
5551 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5552 if (!err) {
5553 wdev->channel = chandef.chan;
5554 wdev->cac_started = true;
5555 wdev->cac_start_time = jiffies;
5556 }
5557 err_locked:
5558 mutex_unlock(&rdev->devlist_mtx);
5559
5560 return err;
5561 }
5562
5563 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5564 u32 seq, int flags,
5565 struct cfg80211_registered_device *rdev,
5566 struct wireless_dev *wdev,
5567 struct cfg80211_internal_bss *intbss)
5568 {
5569 struct cfg80211_bss *res = &intbss->pub;
5570 const struct cfg80211_bss_ies *ies;
5571 void *hdr;
5572 struct nlattr *bss;
5573 bool tsf = false;
5574
5575 ASSERT_WDEV_LOCK(wdev);
5576
5577 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5578 NL80211_CMD_NEW_SCAN_RESULTS);
5579 if (!hdr)
5580 return -1;
5581
5582 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5583
5584 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5585 goto nla_put_failure;
5586 if (wdev->netdev &&
5587 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5588 goto nla_put_failure;
5589 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5590 goto nla_put_failure;
5591
5592 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5593 if (!bss)
5594 goto nla_put_failure;
5595 if ((!is_zero_ether_addr(res->bssid) &&
5596 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5597 goto nla_put_failure;
5598
5599 rcu_read_lock();
5600 ies = rcu_dereference(res->ies);
5601 if (ies) {
5602 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5603 goto fail_unlock_rcu;
5604 tsf = true;
5605 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5606 ies->len, ies->data))
5607 goto fail_unlock_rcu;
5608 }
5609 ies = rcu_dereference(res->beacon_ies);
5610 if (ies) {
5611 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5612 goto fail_unlock_rcu;
5613 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5614 ies->len, ies->data))
5615 goto fail_unlock_rcu;
5616 }
5617 rcu_read_unlock();
5618
5619 if (res->beacon_interval &&
5620 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5621 goto nla_put_failure;
5622 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5623 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5624 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5625 jiffies_to_msecs(jiffies - intbss->ts)))
5626 goto nla_put_failure;
5627
5628 switch (rdev->wiphy.signal_type) {
5629 case CFG80211_SIGNAL_TYPE_MBM:
5630 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5631 goto nla_put_failure;
5632 break;
5633 case CFG80211_SIGNAL_TYPE_UNSPEC:
5634 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5635 goto nla_put_failure;
5636 break;
5637 default:
5638 break;
5639 }
5640
5641 switch (wdev->iftype) {
5642 case NL80211_IFTYPE_P2P_CLIENT:
5643 case NL80211_IFTYPE_STATION:
5644 if (intbss == wdev->current_bss &&
5645 nla_put_u32(msg, NL80211_BSS_STATUS,
5646 NL80211_BSS_STATUS_ASSOCIATED))
5647 goto nla_put_failure;
5648 break;
5649 case NL80211_IFTYPE_ADHOC:
5650 if (intbss == wdev->current_bss &&
5651 nla_put_u32(msg, NL80211_BSS_STATUS,
5652 NL80211_BSS_STATUS_IBSS_JOINED))
5653 goto nla_put_failure;
5654 break;
5655 default:
5656 break;
5657 }
5658
5659 nla_nest_end(msg, bss);
5660
5661 return genlmsg_end(msg, hdr);
5662
5663 fail_unlock_rcu:
5664 rcu_read_unlock();
5665 nla_put_failure:
5666 genlmsg_cancel(msg, hdr);
5667 return -EMSGSIZE;
5668 }
5669
5670 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5671 {
5672 struct cfg80211_registered_device *rdev;
5673 struct cfg80211_internal_bss *scan;
5674 struct wireless_dev *wdev;
5675 int start = cb->args[2], idx = 0;
5676 int err;
5677
5678 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5679 if (err)
5680 return err;
5681
5682 wdev_lock(wdev);
5683 spin_lock_bh(&rdev->bss_lock);
5684 cfg80211_bss_expire(rdev);
5685
5686 cb->seq = rdev->bss_generation;
5687
5688 list_for_each_entry(scan, &rdev->bss_list, list) {
5689 if (++idx <= start)
5690 continue;
5691 if (nl80211_send_bss(skb, cb,
5692 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5693 rdev, wdev, scan) < 0) {
5694 idx--;
5695 break;
5696 }
5697 }
5698
5699 spin_unlock_bh(&rdev->bss_lock);
5700 wdev_unlock(wdev);
5701
5702 cb->args[2] = idx;
5703 nl80211_finish_wdev_dump(rdev);
5704
5705 return skb->len;
5706 }
5707
5708 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5709 int flags, struct net_device *dev,
5710 struct survey_info *survey)
5711 {
5712 void *hdr;
5713 struct nlattr *infoattr;
5714
5715 hdr = nl80211hdr_put(msg, portid, seq, flags,
5716 NL80211_CMD_NEW_SURVEY_RESULTS);
5717 if (!hdr)
5718 return -ENOMEM;
5719
5720 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5721 goto nla_put_failure;
5722
5723 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5724 if (!infoattr)
5725 goto nla_put_failure;
5726
5727 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5728 survey->channel->center_freq))
5729 goto nla_put_failure;
5730
5731 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5732 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5733 goto nla_put_failure;
5734 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5735 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5736 goto nla_put_failure;
5737 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5738 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5739 survey->channel_time))
5740 goto nla_put_failure;
5741 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5742 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5743 survey->channel_time_busy))
5744 goto nla_put_failure;
5745 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5746 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5747 survey->channel_time_ext_busy))
5748 goto nla_put_failure;
5749 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5750 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5751 survey->channel_time_rx))
5752 goto nla_put_failure;
5753 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5754 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5755 survey->channel_time_tx))
5756 goto nla_put_failure;
5757
5758 nla_nest_end(msg, infoattr);
5759
5760 return genlmsg_end(msg, hdr);
5761
5762 nla_put_failure:
5763 genlmsg_cancel(msg, hdr);
5764 return -EMSGSIZE;
5765 }
5766
5767 static int nl80211_dump_survey(struct sk_buff *skb,
5768 struct netlink_callback *cb)
5769 {
5770 struct survey_info survey;
5771 struct cfg80211_registered_device *dev;
5772 struct wireless_dev *wdev;
5773 int survey_idx = cb->args[2];
5774 int res;
5775
5776 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5777 if (res)
5778 return res;
5779
5780 if (!wdev->netdev) {
5781 res = -EINVAL;
5782 goto out_err;
5783 }
5784
5785 if (!dev->ops->dump_survey) {
5786 res = -EOPNOTSUPP;
5787 goto out_err;
5788 }
5789
5790 while (1) {
5791 struct ieee80211_channel *chan;
5792
5793 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5794 if (res == -ENOENT)
5795 break;
5796 if (res)
5797 goto out_err;
5798
5799 /* Survey without a channel doesn't make sense */
5800 if (!survey.channel) {
5801 res = -EINVAL;
5802 goto out;
5803 }
5804
5805 chan = ieee80211_get_channel(&dev->wiphy,
5806 survey.channel->center_freq);
5807 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5808 survey_idx++;
5809 continue;
5810 }
5811
5812 if (nl80211_send_survey(skb,
5813 NETLINK_CB(cb->skb).portid,
5814 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5815 wdev->netdev, &survey) < 0)
5816 goto out;
5817 survey_idx++;
5818 }
5819
5820 out:
5821 cb->args[2] = survey_idx;
5822 res = skb->len;
5823 out_err:
5824 nl80211_finish_wdev_dump(dev);
5825 return res;
5826 }
5827
5828 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5829 {
5830 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5831 NL80211_WPA_VERSION_2));
5832 }
5833
5834 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5835 {
5836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5837 struct net_device *dev = info->user_ptr[1];
5838 struct ieee80211_channel *chan;
5839 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5840 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5841 enum nl80211_auth_type auth_type;
5842 struct key_parse key;
5843 bool local_state_change;
5844
5845 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5846 return -EINVAL;
5847
5848 if (!info->attrs[NL80211_ATTR_MAC])
5849 return -EINVAL;
5850
5851 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5852 return -EINVAL;
5853
5854 if (!info->attrs[NL80211_ATTR_SSID])
5855 return -EINVAL;
5856
5857 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5858 return -EINVAL;
5859
5860 err = nl80211_parse_key(info, &key);
5861 if (err)
5862 return err;
5863
5864 if (key.idx >= 0) {
5865 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5866 return -EINVAL;
5867 if (!key.p.key || !key.p.key_len)
5868 return -EINVAL;
5869 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5870 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5871 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5872 key.p.key_len != WLAN_KEY_LEN_WEP104))
5873 return -EINVAL;
5874 if (key.idx > 4)
5875 return -EINVAL;
5876 } else {
5877 key.p.key_len = 0;
5878 key.p.key = NULL;
5879 }
5880
5881 if (key.idx >= 0) {
5882 int i;
5883 bool ok = false;
5884 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5885 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5886 ok = true;
5887 break;
5888 }
5889 }
5890 if (!ok)
5891 return -EINVAL;
5892 }
5893
5894 if (!rdev->ops->auth)
5895 return -EOPNOTSUPP;
5896
5897 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5898 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5899 return -EOPNOTSUPP;
5900
5901 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5902 chan = ieee80211_get_channel(&rdev->wiphy,
5903 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5904 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5905 return -EINVAL;
5906
5907 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5908 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5909
5910 if (info->attrs[NL80211_ATTR_IE]) {
5911 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5912 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5913 }
5914
5915 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5916 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5917 return -EINVAL;
5918
5919 if (auth_type == NL80211_AUTHTYPE_SAE &&
5920 !info->attrs[NL80211_ATTR_SAE_DATA])
5921 return -EINVAL;
5922
5923 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5924 if (auth_type != NL80211_AUTHTYPE_SAE)
5925 return -EINVAL;
5926 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5927 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5928 /* need to include at least Auth Transaction and Status Code */
5929 if (sae_data_len < 4)
5930 return -EINVAL;
5931 }
5932
5933 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5934
5935 /*
5936 * Since we no longer track auth state, ignore
5937 * requests to only change local state.
5938 */
5939 if (local_state_change)
5940 return 0;
5941
5942 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5943 ssid, ssid_len, ie, ie_len,
5944 key.p.key, key.p.key_len, key.idx,
5945 sae_data, sae_data_len);
5946 }
5947
5948 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5949 struct genl_info *info,
5950 struct cfg80211_crypto_settings *settings,
5951 int cipher_limit)
5952 {
5953 memset(settings, 0, sizeof(*settings));
5954
5955 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5956
5957 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5958 u16 proto;
5959 proto = nla_get_u16(
5960 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5961 settings->control_port_ethertype = cpu_to_be16(proto);
5962 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5963 proto != ETH_P_PAE)
5964 return -EINVAL;
5965 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5966 settings->control_port_no_encrypt = true;
5967 } else
5968 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5969
5970 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5971 void *data;
5972 int len, i;
5973
5974 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5975 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5976 settings->n_ciphers_pairwise = len / sizeof(u32);
5977
5978 if (len % sizeof(u32))
5979 return -EINVAL;
5980
5981 if (settings->n_ciphers_pairwise > cipher_limit)
5982 return -EINVAL;
5983
5984 memcpy(settings->ciphers_pairwise, data, len);
5985
5986 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5987 if (!cfg80211_supported_cipher_suite(
5988 &rdev->wiphy,
5989 settings->ciphers_pairwise[i]))
5990 return -EINVAL;
5991 }
5992
5993 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5994 settings->cipher_group =
5995 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5996 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5997 settings->cipher_group))
5998 return -EINVAL;
5999 }
6000
6001 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6002 settings->wpa_versions =
6003 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6004 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6005 return -EINVAL;
6006 }
6007
6008 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6009 void *data;
6010 int len;
6011
6012 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6013 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6014 settings->n_akm_suites = len / sizeof(u32);
6015
6016 if (len % sizeof(u32))
6017 return -EINVAL;
6018
6019 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6020 return -EINVAL;
6021
6022 memcpy(settings->akm_suites, data, len);
6023 }
6024
6025 return 0;
6026 }
6027
6028 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6029 {
6030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6031 struct net_device *dev = info->user_ptr[1];
6032 struct ieee80211_channel *chan;
6033 struct cfg80211_assoc_request req = {};
6034 const u8 *bssid, *ssid;
6035 int err, ssid_len = 0;
6036
6037 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6038 return -EINVAL;
6039
6040 if (!info->attrs[NL80211_ATTR_MAC] ||
6041 !info->attrs[NL80211_ATTR_SSID] ||
6042 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6043 return -EINVAL;
6044
6045 if (!rdev->ops->assoc)
6046 return -EOPNOTSUPP;
6047
6048 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6049 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6050 return -EOPNOTSUPP;
6051
6052 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6053
6054 chan = ieee80211_get_channel(&rdev->wiphy,
6055 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6056 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6057 return -EINVAL;
6058
6059 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6060 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6061
6062 if (info->attrs[NL80211_ATTR_IE]) {
6063 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6064 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6065 }
6066
6067 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6068 enum nl80211_mfp mfp =
6069 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6070 if (mfp == NL80211_MFP_REQUIRED)
6071 req.use_mfp = true;
6072 else if (mfp != NL80211_MFP_NO)
6073 return -EINVAL;
6074 }
6075
6076 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6077 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6078
6079 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6080 req.flags |= ASSOC_REQ_DISABLE_HT;
6081
6082 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6083 memcpy(&req.ht_capa_mask,
6084 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6085 sizeof(req.ht_capa_mask));
6086
6087 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6088 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6089 return -EINVAL;
6090 memcpy(&req.ht_capa,
6091 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6092 sizeof(req.ht_capa));
6093 }
6094
6095 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6096 req.flags |= ASSOC_REQ_DISABLE_VHT;
6097
6098 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6099 memcpy(&req.vht_capa_mask,
6100 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6101 sizeof(req.vht_capa_mask));
6102
6103 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6104 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6105 return -EINVAL;
6106 memcpy(&req.vht_capa,
6107 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6108 sizeof(req.vht_capa));
6109 }
6110
6111 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6112 if (!err)
6113 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6114 ssid, ssid_len, &req);
6115
6116 return err;
6117 }
6118
6119 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6120 {
6121 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6122 struct net_device *dev = info->user_ptr[1];
6123 const u8 *ie = NULL, *bssid;
6124 int ie_len = 0;
6125 u16 reason_code;
6126 bool local_state_change;
6127
6128 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6129 return -EINVAL;
6130
6131 if (!info->attrs[NL80211_ATTR_MAC])
6132 return -EINVAL;
6133
6134 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6135 return -EINVAL;
6136
6137 if (!rdev->ops->deauth)
6138 return -EOPNOTSUPP;
6139
6140 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6141 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6142 return -EOPNOTSUPP;
6143
6144 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6145
6146 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6147 if (reason_code == 0) {
6148 /* Reason Code 0 is reserved */
6149 return -EINVAL;
6150 }
6151
6152 if (info->attrs[NL80211_ATTR_IE]) {
6153 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6154 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6155 }
6156
6157 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6158
6159 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6160 local_state_change);
6161 }
6162
6163 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6164 {
6165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6166 struct net_device *dev = info->user_ptr[1];
6167 const u8 *ie = NULL, *bssid;
6168 int ie_len = 0;
6169 u16 reason_code;
6170 bool local_state_change;
6171
6172 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6173 return -EINVAL;
6174
6175 if (!info->attrs[NL80211_ATTR_MAC])
6176 return -EINVAL;
6177
6178 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6179 return -EINVAL;
6180
6181 if (!rdev->ops->disassoc)
6182 return -EOPNOTSUPP;
6183
6184 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6185 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6186 return -EOPNOTSUPP;
6187
6188 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6189
6190 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6191 if (reason_code == 0) {
6192 /* Reason Code 0 is reserved */
6193 return -EINVAL;
6194 }
6195
6196 if (info->attrs[NL80211_ATTR_IE]) {
6197 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6198 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6199 }
6200
6201 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6202
6203 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6204 local_state_change);
6205 }
6206
6207 static bool
6208 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6209 int mcast_rate[IEEE80211_NUM_BANDS],
6210 int rateval)
6211 {
6212 struct wiphy *wiphy = &rdev->wiphy;
6213 bool found = false;
6214 int band, i;
6215
6216 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6217 struct ieee80211_supported_band *sband;
6218
6219 sband = wiphy->bands[band];
6220 if (!sband)
6221 continue;
6222
6223 for (i = 0; i < sband->n_bitrates; i++) {
6224 if (sband->bitrates[i].bitrate == rateval) {
6225 mcast_rate[band] = i + 1;
6226 found = true;
6227 break;
6228 }
6229 }
6230 }
6231
6232 return found;
6233 }
6234
6235 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6236 {
6237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6238 struct net_device *dev = info->user_ptr[1];
6239 struct cfg80211_ibss_params ibss;
6240 struct wiphy *wiphy;
6241 struct cfg80211_cached_keys *connkeys = NULL;
6242 int err;
6243
6244 memset(&ibss, 0, sizeof(ibss));
6245
6246 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6247 return -EINVAL;
6248
6249 if (!info->attrs[NL80211_ATTR_SSID] ||
6250 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6251 return -EINVAL;
6252
6253 ibss.beacon_interval = 100;
6254
6255 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6256 ibss.beacon_interval =
6257 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6258 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6259 return -EINVAL;
6260 }
6261
6262 if (!rdev->ops->join_ibss)
6263 return -EOPNOTSUPP;
6264
6265 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6266 return -EOPNOTSUPP;
6267
6268 wiphy = &rdev->wiphy;
6269
6270 if (info->attrs[NL80211_ATTR_MAC]) {
6271 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6272
6273 if (!is_valid_ether_addr(ibss.bssid))
6274 return -EINVAL;
6275 }
6276 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6277 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6278
6279 if (info->attrs[NL80211_ATTR_IE]) {
6280 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6281 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6282 }
6283
6284 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6285 if (err)
6286 return err;
6287
6288 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6289 return -EINVAL;
6290
6291 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6292 return -EINVAL;
6293 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6294 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6295 return -EINVAL;
6296
6297 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6298 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6299
6300 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6301 u8 *rates =
6302 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6303 int n_rates =
6304 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6305 struct ieee80211_supported_band *sband =
6306 wiphy->bands[ibss.chandef.chan->band];
6307
6308 err = ieee80211_get_ratemask(sband, rates, n_rates,
6309 &ibss.basic_rates);
6310 if (err)
6311 return err;
6312 }
6313
6314 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6315 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6316 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6317 return -EINVAL;
6318
6319 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6320 bool no_ht = false;
6321
6322 connkeys = nl80211_parse_connkeys(rdev,
6323 info->attrs[NL80211_ATTR_KEYS],
6324 &no_ht);
6325 if (IS_ERR(connkeys))
6326 return PTR_ERR(connkeys);
6327
6328 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6329 no_ht) {
6330 kfree(connkeys);
6331 return -EINVAL;
6332 }
6333 }
6334
6335 ibss.control_port =
6336 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6337
6338 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6339 if (err)
6340 kfree(connkeys);
6341 return err;
6342 }
6343
6344 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6345 {
6346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6347 struct net_device *dev = info->user_ptr[1];
6348
6349 if (!rdev->ops->leave_ibss)
6350 return -EOPNOTSUPP;
6351
6352 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6353 return -EOPNOTSUPP;
6354
6355 return cfg80211_leave_ibss(rdev, dev, false);
6356 }
6357
6358 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6359 {
6360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6361 struct net_device *dev = info->user_ptr[1];
6362 int mcast_rate[IEEE80211_NUM_BANDS];
6363 u32 nla_rate;
6364 int err;
6365
6366 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6367 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6368 return -EOPNOTSUPP;
6369
6370 if (!rdev->ops->set_mcast_rate)
6371 return -EOPNOTSUPP;
6372
6373 memset(mcast_rate, 0, sizeof(mcast_rate));
6374
6375 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6376 return -EINVAL;
6377
6378 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6379 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6380 return -EINVAL;
6381
6382 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6383
6384 return err;
6385 }
6386
6387
6388 #ifdef CONFIG_NL80211_TESTMODE
6389 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6390 .name = "testmode",
6391 };
6392
6393 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6394 {
6395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6396 int err;
6397
6398 if (!info->attrs[NL80211_ATTR_TESTDATA])
6399 return -EINVAL;
6400
6401 err = -EOPNOTSUPP;
6402 if (rdev->ops->testmode_cmd) {
6403 rdev->testmode_info = info;
6404 err = rdev_testmode_cmd(rdev,
6405 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6406 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6407 rdev->testmode_info = NULL;
6408 }
6409
6410 return err;
6411 }
6412
6413 static int nl80211_testmode_dump(struct sk_buff *skb,
6414 struct netlink_callback *cb)
6415 {
6416 struct cfg80211_registered_device *rdev;
6417 int err;
6418 long phy_idx;
6419 void *data = NULL;
6420 int data_len = 0;
6421
6422 if (cb->args[0]) {
6423 /*
6424 * 0 is a valid index, but not valid for args[0],
6425 * so we need to offset by 1.
6426 */
6427 phy_idx = cb->args[0] - 1;
6428 } else {
6429 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6430 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6431 nl80211_policy);
6432 if (err)
6433 return err;
6434
6435 mutex_lock(&cfg80211_mutex);
6436 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6437 nl80211_fam.attrbuf);
6438 if (IS_ERR(rdev)) {
6439 mutex_unlock(&cfg80211_mutex);
6440 return PTR_ERR(rdev);
6441 }
6442 phy_idx = rdev->wiphy_idx;
6443 rdev = NULL;
6444 mutex_unlock(&cfg80211_mutex);
6445
6446 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6447 cb->args[1] =
6448 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6449 }
6450
6451 if (cb->args[1]) {
6452 data = nla_data((void *)cb->args[1]);
6453 data_len = nla_len((void *)cb->args[1]);
6454 }
6455
6456 mutex_lock(&cfg80211_mutex);
6457 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6458 if (!rdev) {
6459 mutex_unlock(&cfg80211_mutex);
6460 return -ENOENT;
6461 }
6462 cfg80211_lock_rdev(rdev);
6463 mutex_unlock(&cfg80211_mutex);
6464
6465 if (!rdev->ops->testmode_dump) {
6466 err = -EOPNOTSUPP;
6467 goto out_err;
6468 }
6469
6470 while (1) {
6471 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6472 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6473 NL80211_CMD_TESTMODE);
6474 struct nlattr *tmdata;
6475
6476 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6477 genlmsg_cancel(skb, hdr);
6478 break;
6479 }
6480
6481 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6482 if (!tmdata) {
6483 genlmsg_cancel(skb, hdr);
6484 break;
6485 }
6486 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6487 nla_nest_end(skb, tmdata);
6488
6489 if (err == -ENOBUFS || err == -ENOENT) {
6490 genlmsg_cancel(skb, hdr);
6491 break;
6492 } else if (err) {
6493 genlmsg_cancel(skb, hdr);
6494 goto out_err;
6495 }
6496
6497 genlmsg_end(skb, hdr);
6498 }
6499
6500 err = skb->len;
6501 /* see above */
6502 cb->args[0] = phy_idx + 1;
6503 out_err:
6504 cfg80211_unlock_rdev(rdev);
6505 return err;
6506 }
6507
6508 static struct sk_buff *
6509 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6510 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6511 {
6512 struct sk_buff *skb;
6513 void *hdr;
6514 struct nlattr *data;
6515
6516 skb = nlmsg_new(approxlen + 100, gfp);
6517 if (!skb)
6518 return NULL;
6519
6520 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6521 if (!hdr) {
6522 kfree_skb(skb);
6523 return NULL;
6524 }
6525
6526 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6527 goto nla_put_failure;
6528 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6529
6530 ((void **)skb->cb)[0] = rdev;
6531 ((void **)skb->cb)[1] = hdr;
6532 ((void **)skb->cb)[2] = data;
6533
6534 return skb;
6535
6536 nla_put_failure:
6537 kfree_skb(skb);
6538 return NULL;
6539 }
6540
6541 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6542 int approxlen)
6543 {
6544 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6545
6546 if (WARN_ON(!rdev->testmode_info))
6547 return NULL;
6548
6549 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6550 rdev->testmode_info->snd_portid,
6551 rdev->testmode_info->snd_seq,
6552 GFP_KERNEL);
6553 }
6554 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6555
6556 int cfg80211_testmode_reply(struct sk_buff *skb)
6557 {
6558 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6559 void *hdr = ((void **)skb->cb)[1];
6560 struct nlattr *data = ((void **)skb->cb)[2];
6561
6562 if (WARN_ON(!rdev->testmode_info)) {
6563 kfree_skb(skb);
6564 return -EINVAL;
6565 }
6566
6567 nla_nest_end(skb, data);
6568 genlmsg_end(skb, hdr);
6569 return genlmsg_reply(skb, rdev->testmode_info);
6570 }
6571 EXPORT_SYMBOL(cfg80211_testmode_reply);
6572
6573 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6574 int approxlen, gfp_t gfp)
6575 {
6576 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6577
6578 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6579 }
6580 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6581
6582 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6583 {
6584 void *hdr = ((void **)skb->cb)[1];
6585 struct nlattr *data = ((void **)skb->cb)[2];
6586
6587 nla_nest_end(skb, data);
6588 genlmsg_end(skb, hdr);
6589 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6590 }
6591 EXPORT_SYMBOL(cfg80211_testmode_event);
6592 #endif
6593
6594 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6595 {
6596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6597 struct net_device *dev = info->user_ptr[1];
6598 struct cfg80211_connect_params connect;
6599 struct wiphy *wiphy;
6600 struct cfg80211_cached_keys *connkeys = NULL;
6601 int err;
6602
6603 memset(&connect, 0, sizeof(connect));
6604
6605 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6606 return -EINVAL;
6607
6608 if (!info->attrs[NL80211_ATTR_SSID] ||
6609 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6610 return -EINVAL;
6611
6612 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6613 connect.auth_type =
6614 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6615 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6616 NL80211_CMD_CONNECT))
6617 return -EINVAL;
6618 } else
6619 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6620
6621 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6622
6623 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6624 NL80211_MAX_NR_CIPHER_SUITES);
6625 if (err)
6626 return err;
6627
6628 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6630 return -EOPNOTSUPP;
6631
6632 wiphy = &rdev->wiphy;
6633
6634 connect.bg_scan_period = -1;
6635 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6636 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6637 connect.bg_scan_period =
6638 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6639 }
6640
6641 if (info->attrs[NL80211_ATTR_MAC])
6642 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6643 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6644 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6645
6646 if (info->attrs[NL80211_ATTR_IE]) {
6647 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6648 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6649 }
6650
6651 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6652 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6653 if (connect.mfp != NL80211_MFP_REQUIRED &&
6654 connect.mfp != NL80211_MFP_NO)
6655 return -EINVAL;
6656 } else {
6657 connect.mfp = NL80211_MFP_NO;
6658 }
6659
6660 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6661 connect.channel =
6662 ieee80211_get_channel(wiphy,
6663 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6664 if (!connect.channel ||
6665 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6666 return -EINVAL;
6667 }
6668
6669 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6670 connkeys = nl80211_parse_connkeys(rdev,
6671 info->attrs[NL80211_ATTR_KEYS], NULL);
6672 if (IS_ERR(connkeys))
6673 return PTR_ERR(connkeys);
6674 }
6675
6676 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6677 connect.flags |= ASSOC_REQ_DISABLE_HT;
6678
6679 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6680 memcpy(&connect.ht_capa_mask,
6681 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6682 sizeof(connect.ht_capa_mask));
6683
6684 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6685 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6686 kfree(connkeys);
6687 return -EINVAL;
6688 }
6689 memcpy(&connect.ht_capa,
6690 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6691 sizeof(connect.ht_capa));
6692 }
6693
6694 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6695 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6696
6697 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6698 memcpy(&connect.vht_capa_mask,
6699 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6700 sizeof(connect.vht_capa_mask));
6701
6702 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6703 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6704 kfree(connkeys);
6705 return -EINVAL;
6706 }
6707 memcpy(&connect.vht_capa,
6708 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6709 sizeof(connect.vht_capa));
6710 }
6711
6712 err = cfg80211_connect(rdev, dev, &connect, connkeys);
6713 if (err)
6714 kfree(connkeys);
6715 return err;
6716 }
6717
6718 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6719 {
6720 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6721 struct net_device *dev = info->user_ptr[1];
6722 u16 reason;
6723
6724 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6725 reason = WLAN_REASON_DEAUTH_LEAVING;
6726 else
6727 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6728
6729 if (reason == 0)
6730 return -EINVAL;
6731
6732 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6733 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6734 return -EOPNOTSUPP;
6735
6736 return cfg80211_disconnect(rdev, dev, reason, true);
6737 }
6738
6739 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6740 {
6741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6742 struct net *net;
6743 int err;
6744 u32 pid;
6745
6746 if (!info->attrs[NL80211_ATTR_PID])
6747 return -EINVAL;
6748
6749 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6750
6751 net = get_net_ns_by_pid(pid);
6752 if (IS_ERR(net))
6753 return PTR_ERR(net);
6754
6755 err = 0;
6756
6757 /* check if anything to do */
6758 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6759 err = cfg80211_switch_netns(rdev, net);
6760
6761 put_net(net);
6762 return err;
6763 }
6764
6765 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6766 {
6767 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6768 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6769 struct cfg80211_pmksa *pmksa) = NULL;
6770 struct net_device *dev = info->user_ptr[1];
6771 struct cfg80211_pmksa pmksa;
6772
6773 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6774
6775 if (!info->attrs[NL80211_ATTR_MAC])
6776 return -EINVAL;
6777
6778 if (!info->attrs[NL80211_ATTR_PMKID])
6779 return -EINVAL;
6780
6781 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6782 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6783
6784 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6785 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6786 return -EOPNOTSUPP;
6787
6788 switch (info->genlhdr->cmd) {
6789 case NL80211_CMD_SET_PMKSA:
6790 rdev_ops = rdev->ops->set_pmksa;
6791 break;
6792 case NL80211_CMD_DEL_PMKSA:
6793 rdev_ops = rdev->ops->del_pmksa;
6794 break;
6795 default:
6796 WARN_ON(1);
6797 break;
6798 }
6799
6800 if (!rdev_ops)
6801 return -EOPNOTSUPP;
6802
6803 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6804 }
6805
6806 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6807 {
6808 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6809 struct net_device *dev = info->user_ptr[1];
6810
6811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6812 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6813 return -EOPNOTSUPP;
6814
6815 if (!rdev->ops->flush_pmksa)
6816 return -EOPNOTSUPP;
6817
6818 return rdev_flush_pmksa(rdev, dev);
6819 }
6820
6821 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6822 {
6823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6824 struct net_device *dev = info->user_ptr[1];
6825 u8 action_code, dialog_token;
6826 u16 status_code;
6827 u8 *peer;
6828
6829 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6830 !rdev->ops->tdls_mgmt)
6831 return -EOPNOTSUPP;
6832
6833 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6834 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6835 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6836 !info->attrs[NL80211_ATTR_IE] ||
6837 !info->attrs[NL80211_ATTR_MAC])
6838 return -EINVAL;
6839
6840 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6841 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6842 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6843 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6844
6845 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6846 dialog_token, status_code,
6847 nla_data(info->attrs[NL80211_ATTR_IE]),
6848 nla_len(info->attrs[NL80211_ATTR_IE]));
6849 }
6850
6851 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6852 {
6853 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6854 struct net_device *dev = info->user_ptr[1];
6855 enum nl80211_tdls_operation operation;
6856 u8 *peer;
6857
6858 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6859 !rdev->ops->tdls_oper)
6860 return -EOPNOTSUPP;
6861
6862 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6863 !info->attrs[NL80211_ATTR_MAC])
6864 return -EINVAL;
6865
6866 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6867 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6868
6869 return rdev_tdls_oper(rdev, dev, peer, operation);
6870 }
6871
6872 static int nl80211_remain_on_channel(struct sk_buff *skb,
6873 struct genl_info *info)
6874 {
6875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6876 struct wireless_dev *wdev = info->user_ptr[1];
6877 struct cfg80211_chan_def chandef;
6878 struct sk_buff *msg;
6879 void *hdr;
6880 u64 cookie;
6881 u32 duration;
6882 int err;
6883
6884 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6885 !info->attrs[NL80211_ATTR_DURATION])
6886 return -EINVAL;
6887
6888 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6889
6890 if (!rdev->ops->remain_on_channel ||
6891 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6892 return -EOPNOTSUPP;
6893
6894 /*
6895 * We should be on that channel for at least a minimum amount of
6896 * time (10ms) but no longer than the driver supports.
6897 */
6898 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6899 duration > rdev->wiphy.max_remain_on_channel_duration)
6900 return -EINVAL;
6901
6902 err = nl80211_parse_chandef(rdev, info, &chandef);
6903 if (err)
6904 return err;
6905
6906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6907 if (!msg)
6908 return -ENOMEM;
6909
6910 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6911 NL80211_CMD_REMAIN_ON_CHANNEL);
6912
6913 if (IS_ERR(hdr)) {
6914 err = PTR_ERR(hdr);
6915 goto free_msg;
6916 }
6917
6918 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6919 duration, &cookie);
6920
6921 if (err)
6922 goto free_msg;
6923
6924 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6925 goto nla_put_failure;
6926
6927 genlmsg_end(msg, hdr);
6928
6929 return genlmsg_reply(msg, info);
6930
6931 nla_put_failure:
6932 err = -ENOBUFS;
6933 free_msg:
6934 nlmsg_free(msg);
6935 return err;
6936 }
6937
6938 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6939 struct genl_info *info)
6940 {
6941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6942 struct wireless_dev *wdev = info->user_ptr[1];
6943 u64 cookie;
6944
6945 if (!info->attrs[NL80211_ATTR_COOKIE])
6946 return -EINVAL;
6947
6948 if (!rdev->ops->cancel_remain_on_channel)
6949 return -EOPNOTSUPP;
6950
6951 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6952
6953 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6954 }
6955
6956 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6957 u8 *rates, u8 rates_len)
6958 {
6959 u8 i;
6960 u32 mask = 0;
6961
6962 for (i = 0; i < rates_len; i++) {
6963 int rate = (rates[i] & 0x7f) * 5;
6964 int ridx;
6965 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6966 struct ieee80211_rate *srate =
6967 &sband->bitrates[ridx];
6968 if (rate == srate->bitrate) {
6969 mask |= 1 << ridx;
6970 break;
6971 }
6972 }
6973 if (ridx == sband->n_bitrates)
6974 return 0; /* rate not found */
6975 }
6976
6977 return mask;
6978 }
6979
6980 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6981 u8 *rates, u8 rates_len,
6982 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6983 {
6984 u8 i;
6985
6986 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6987
6988 for (i = 0; i < rates_len; i++) {
6989 int ridx, rbit;
6990
6991 ridx = rates[i] / 8;
6992 rbit = BIT(rates[i] % 8);
6993
6994 /* check validity */
6995 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6996 return false;
6997
6998 /* check availability */
6999 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7000 mcs[ridx] |= rbit;
7001 else
7002 return false;
7003 }
7004
7005 return true;
7006 }
7007
7008 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7009 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7010 .len = NL80211_MAX_SUPP_RATES },
7011 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7012 .len = NL80211_MAX_SUPP_HT_RATES },
7013 };
7014
7015 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7016 struct genl_info *info)
7017 {
7018 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7020 struct cfg80211_bitrate_mask mask;
7021 int rem, i;
7022 struct net_device *dev = info->user_ptr[1];
7023 struct nlattr *tx_rates;
7024 struct ieee80211_supported_band *sband;
7025
7026 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7027 return -EINVAL;
7028
7029 if (!rdev->ops->set_bitrate_mask)
7030 return -EOPNOTSUPP;
7031
7032 memset(&mask, 0, sizeof(mask));
7033 /* Default to all rates enabled */
7034 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7035 sband = rdev->wiphy.bands[i];
7036 mask.control[i].legacy =
7037 sband ? (1 << sband->n_bitrates) - 1 : 0;
7038 if (sband)
7039 memcpy(mask.control[i].mcs,
7040 sband->ht_cap.mcs.rx_mask,
7041 sizeof(mask.control[i].mcs));
7042 else
7043 memset(mask.control[i].mcs, 0,
7044 sizeof(mask.control[i].mcs));
7045 }
7046
7047 /*
7048 * The nested attribute uses enum nl80211_band as the index. This maps
7049 * directly to the enum ieee80211_band values used in cfg80211.
7050 */
7051 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7052 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7053 {
7054 enum ieee80211_band band = nla_type(tx_rates);
7055 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7056 return -EINVAL;
7057 sband = rdev->wiphy.bands[band];
7058 if (sband == NULL)
7059 return -EINVAL;
7060 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7061 nla_len(tx_rates), nl80211_txattr_policy);
7062 if (tb[NL80211_TXRATE_LEGACY]) {
7063 mask.control[band].legacy = rateset_to_mask(
7064 sband,
7065 nla_data(tb[NL80211_TXRATE_LEGACY]),
7066 nla_len(tb[NL80211_TXRATE_LEGACY]));
7067 if ((mask.control[band].legacy == 0) &&
7068 nla_len(tb[NL80211_TXRATE_LEGACY]))
7069 return -EINVAL;
7070 }
7071 if (tb[NL80211_TXRATE_MCS]) {
7072 if (!ht_rateset_to_mask(
7073 sband,
7074 nla_data(tb[NL80211_TXRATE_MCS]),
7075 nla_len(tb[NL80211_TXRATE_MCS]),
7076 mask.control[band].mcs))
7077 return -EINVAL;
7078 }
7079
7080 if (mask.control[band].legacy == 0) {
7081 /* don't allow empty legacy rates if HT
7082 * is not even supported. */
7083 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7084 return -EINVAL;
7085
7086 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7087 if (mask.control[band].mcs[i])
7088 break;
7089
7090 /* legacy and mcs rates may not be both empty */
7091 if (i == IEEE80211_HT_MCS_MASK_LEN)
7092 return -EINVAL;
7093 }
7094 }
7095
7096 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7097 }
7098
7099 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7100 {
7101 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7102 struct wireless_dev *wdev = info->user_ptr[1];
7103 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7104
7105 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7106 return -EINVAL;
7107
7108 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7109 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7110
7111 switch (wdev->iftype) {
7112 case NL80211_IFTYPE_STATION:
7113 case NL80211_IFTYPE_ADHOC:
7114 case NL80211_IFTYPE_P2P_CLIENT:
7115 case NL80211_IFTYPE_AP:
7116 case NL80211_IFTYPE_AP_VLAN:
7117 case NL80211_IFTYPE_MESH_POINT:
7118 case NL80211_IFTYPE_P2P_GO:
7119 case NL80211_IFTYPE_P2P_DEVICE:
7120 break;
7121 default:
7122 return -EOPNOTSUPP;
7123 }
7124
7125 /* not much point in registering if we can't reply */
7126 if (!rdev->ops->mgmt_tx)
7127 return -EOPNOTSUPP;
7128
7129 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7130 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7131 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7132 }
7133
7134 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7135 {
7136 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7137 struct wireless_dev *wdev = info->user_ptr[1];
7138 struct cfg80211_chan_def chandef;
7139 int err;
7140 void *hdr = NULL;
7141 u64 cookie;
7142 struct sk_buff *msg = NULL;
7143 unsigned int wait = 0;
7144 bool offchan, no_cck, dont_wait_for_ack;
7145
7146 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7147
7148 if (!info->attrs[NL80211_ATTR_FRAME])
7149 return -EINVAL;
7150
7151 if (!rdev->ops->mgmt_tx)
7152 return -EOPNOTSUPP;
7153
7154 switch (wdev->iftype) {
7155 case NL80211_IFTYPE_STATION:
7156 case NL80211_IFTYPE_ADHOC:
7157 case NL80211_IFTYPE_P2P_CLIENT:
7158 case NL80211_IFTYPE_AP:
7159 case NL80211_IFTYPE_AP_VLAN:
7160 case NL80211_IFTYPE_MESH_POINT:
7161 case NL80211_IFTYPE_P2P_GO:
7162 case NL80211_IFTYPE_P2P_DEVICE:
7163 break;
7164 default:
7165 return -EOPNOTSUPP;
7166 }
7167
7168 if (info->attrs[NL80211_ATTR_DURATION]) {
7169 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7170 return -EINVAL;
7171 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7172
7173 /*
7174 * We should wait on the channel for at least a minimum amount
7175 * of time (10ms) but no longer than the driver supports.
7176 */
7177 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7178 wait > rdev->wiphy.max_remain_on_channel_duration)
7179 return -EINVAL;
7180
7181 }
7182
7183 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7184
7185 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7186 return -EINVAL;
7187
7188 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7189
7190 err = nl80211_parse_chandef(rdev, info, &chandef);
7191 if (err)
7192 return err;
7193
7194 if (!dont_wait_for_ack) {
7195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7196 if (!msg)
7197 return -ENOMEM;
7198
7199 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7200 NL80211_CMD_FRAME);
7201
7202 if (IS_ERR(hdr)) {
7203 err = PTR_ERR(hdr);
7204 goto free_msg;
7205 }
7206 }
7207
7208 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7209 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7210 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7211 no_cck, dont_wait_for_ack, &cookie);
7212 if (err)
7213 goto free_msg;
7214
7215 if (msg) {
7216 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7217 goto nla_put_failure;
7218
7219 genlmsg_end(msg, hdr);
7220 return genlmsg_reply(msg, info);
7221 }
7222
7223 return 0;
7224
7225 nla_put_failure:
7226 err = -ENOBUFS;
7227 free_msg:
7228 nlmsg_free(msg);
7229 return err;
7230 }
7231
7232 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7233 {
7234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7235 struct wireless_dev *wdev = info->user_ptr[1];
7236 u64 cookie;
7237
7238 if (!info->attrs[NL80211_ATTR_COOKIE])
7239 return -EINVAL;
7240
7241 if (!rdev->ops->mgmt_tx_cancel_wait)
7242 return -EOPNOTSUPP;
7243
7244 switch (wdev->iftype) {
7245 case NL80211_IFTYPE_STATION:
7246 case NL80211_IFTYPE_ADHOC:
7247 case NL80211_IFTYPE_P2P_CLIENT:
7248 case NL80211_IFTYPE_AP:
7249 case NL80211_IFTYPE_AP_VLAN:
7250 case NL80211_IFTYPE_P2P_GO:
7251 case NL80211_IFTYPE_P2P_DEVICE:
7252 break;
7253 default:
7254 return -EOPNOTSUPP;
7255 }
7256
7257 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7258
7259 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7260 }
7261
7262 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7263 {
7264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7265 struct wireless_dev *wdev;
7266 struct net_device *dev = info->user_ptr[1];
7267 u8 ps_state;
7268 bool state;
7269 int err;
7270
7271 if (!info->attrs[NL80211_ATTR_PS_STATE])
7272 return -EINVAL;
7273
7274 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7275
7276 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7277 return -EINVAL;
7278
7279 wdev = dev->ieee80211_ptr;
7280
7281 if (!rdev->ops->set_power_mgmt)
7282 return -EOPNOTSUPP;
7283
7284 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7285
7286 if (state == wdev->ps)
7287 return 0;
7288
7289 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7290 if (!err)
7291 wdev->ps = state;
7292 return err;
7293 }
7294
7295 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7296 {
7297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7298 enum nl80211_ps_state ps_state;
7299 struct wireless_dev *wdev;
7300 struct net_device *dev = info->user_ptr[1];
7301 struct sk_buff *msg;
7302 void *hdr;
7303 int err;
7304
7305 wdev = dev->ieee80211_ptr;
7306
7307 if (!rdev->ops->set_power_mgmt)
7308 return -EOPNOTSUPP;
7309
7310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7311 if (!msg)
7312 return -ENOMEM;
7313
7314 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7315 NL80211_CMD_GET_POWER_SAVE);
7316 if (!hdr) {
7317 err = -ENOBUFS;
7318 goto free_msg;
7319 }
7320
7321 if (wdev->ps)
7322 ps_state = NL80211_PS_ENABLED;
7323 else
7324 ps_state = NL80211_PS_DISABLED;
7325
7326 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7327 goto nla_put_failure;
7328
7329 genlmsg_end(msg, hdr);
7330 return genlmsg_reply(msg, info);
7331
7332 nla_put_failure:
7333 err = -ENOBUFS;
7334 free_msg:
7335 nlmsg_free(msg);
7336 return err;
7337 }
7338
7339 static struct nla_policy
7340 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7341 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7342 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7343 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7344 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7345 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7346 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7347 };
7348
7349 static int nl80211_set_cqm_txe(struct genl_info *info,
7350 u32 rate, u32 pkts, u32 intvl)
7351 {
7352 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7353 struct wireless_dev *wdev;
7354 struct net_device *dev = info->user_ptr[1];
7355
7356 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7357 return -EINVAL;
7358
7359 wdev = dev->ieee80211_ptr;
7360
7361 if (!rdev->ops->set_cqm_txe_config)
7362 return -EOPNOTSUPP;
7363
7364 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7365 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7366 return -EOPNOTSUPP;
7367
7368 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7369 }
7370
7371 static int nl80211_set_cqm_rssi(struct genl_info *info,
7372 s32 threshold, u32 hysteresis)
7373 {
7374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7375 struct wireless_dev *wdev;
7376 struct net_device *dev = info->user_ptr[1];
7377
7378 if (threshold > 0)
7379 return -EINVAL;
7380
7381 wdev = dev->ieee80211_ptr;
7382
7383 if (!rdev->ops->set_cqm_rssi_config)
7384 return -EOPNOTSUPP;
7385
7386 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7387 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7388 return -EOPNOTSUPP;
7389
7390 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7391 }
7392
7393 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7394 {
7395 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7396 struct nlattr *cqm;
7397 int err;
7398
7399 cqm = info->attrs[NL80211_ATTR_CQM];
7400 if (!cqm) {
7401 err = -EINVAL;
7402 goto out;
7403 }
7404
7405 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7406 nl80211_attr_cqm_policy);
7407 if (err)
7408 goto out;
7409
7410 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7411 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7412 s32 threshold;
7413 u32 hysteresis;
7414 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7415 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7416 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7417 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7418 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7419 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7420 u32 rate, pkts, intvl;
7421 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7422 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7423 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7424 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7425 } else
7426 err = -EINVAL;
7427
7428 out:
7429 return err;
7430 }
7431
7432 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7433 {
7434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7435 struct net_device *dev = info->user_ptr[1];
7436 struct mesh_config cfg;
7437 struct mesh_setup setup;
7438 int err;
7439
7440 /* start with default */
7441 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7442 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7443
7444 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7445 /* and parse parameters if given */
7446 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7447 if (err)
7448 return err;
7449 }
7450
7451 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7452 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7453 return -EINVAL;
7454
7455 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7456 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7457
7458 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7459 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7460 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7461 return -EINVAL;
7462
7463 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7464 setup.beacon_interval =
7465 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7466 if (setup.beacon_interval < 10 ||
7467 setup.beacon_interval > 10000)
7468 return -EINVAL;
7469 }
7470
7471 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7472 setup.dtim_period =
7473 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7474 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7475 return -EINVAL;
7476 }
7477
7478 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7479 /* parse additional setup parameters if given */
7480 err = nl80211_parse_mesh_setup(info, &setup);
7481 if (err)
7482 return err;
7483 }
7484
7485 if (setup.user_mpm)
7486 cfg.auto_open_plinks = false;
7487
7488 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7489 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7490 if (err)
7491 return err;
7492 } else {
7493 /* cfg80211_join_mesh() will sort it out */
7494 setup.chandef.chan = NULL;
7495 }
7496
7497 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7498 }
7499
7500 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7501 {
7502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7503 struct net_device *dev = info->user_ptr[1];
7504
7505 return cfg80211_leave_mesh(rdev, dev);
7506 }
7507
7508 #ifdef CONFIG_PM
7509 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7510 struct cfg80211_registered_device *rdev)
7511 {
7512 struct nlattr *nl_pats, *nl_pat;
7513 int i, pat_len;
7514
7515 if (!rdev->wowlan->n_patterns)
7516 return 0;
7517
7518 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7519 if (!nl_pats)
7520 return -ENOBUFS;
7521
7522 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
7523 nl_pat = nla_nest_start(msg, i + 1);
7524 if (!nl_pat)
7525 return -ENOBUFS;
7526 pat_len = rdev->wowlan->patterns[i].pattern_len;
7527 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7528 DIV_ROUND_UP(pat_len, 8),
7529 rdev->wowlan->patterns[i].mask) ||
7530 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7531 pat_len, rdev->wowlan->patterns[i].pattern) ||
7532 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7533 rdev->wowlan->patterns[i].pkt_offset))
7534 return -ENOBUFS;
7535 nla_nest_end(msg, nl_pat);
7536 }
7537 nla_nest_end(msg, nl_pats);
7538
7539 return 0;
7540 }
7541
7542 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7543 struct cfg80211_wowlan_tcp *tcp)
7544 {
7545 struct nlattr *nl_tcp;
7546
7547 if (!tcp)
7548 return 0;
7549
7550 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7551 if (!nl_tcp)
7552 return -ENOBUFS;
7553
7554 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7555 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7556 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7557 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7558 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7559 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7560 tcp->payload_len, tcp->payload) ||
7561 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7562 tcp->data_interval) ||
7563 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7564 tcp->wake_len, tcp->wake_data) ||
7565 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7566 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7567 return -ENOBUFS;
7568
7569 if (tcp->payload_seq.len &&
7570 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7571 sizeof(tcp->payload_seq), &tcp->payload_seq))
7572 return -ENOBUFS;
7573
7574 if (tcp->payload_tok.len &&
7575 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7576 sizeof(tcp->payload_tok) + tcp->tokens_size,
7577 &tcp->payload_tok))
7578 return -ENOBUFS;
7579
7580 nla_nest_end(msg, nl_tcp);
7581
7582 return 0;
7583 }
7584
7585 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7586 {
7587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7588 struct sk_buff *msg;
7589 void *hdr;
7590 u32 size = NLMSG_DEFAULT_SIZE;
7591
7592 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7593 !rdev->wiphy.wowlan.tcp)
7594 return -EOPNOTSUPP;
7595
7596 if (rdev->wowlan && rdev->wowlan->tcp) {
7597 /* adjust size to have room for all the data */
7598 size += rdev->wowlan->tcp->tokens_size +
7599 rdev->wowlan->tcp->payload_len +
7600 rdev->wowlan->tcp->wake_len +
7601 rdev->wowlan->tcp->wake_len / 8;
7602 }
7603
7604 msg = nlmsg_new(size, GFP_KERNEL);
7605 if (!msg)
7606 return -ENOMEM;
7607
7608 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7609 NL80211_CMD_GET_WOWLAN);
7610 if (!hdr)
7611 goto nla_put_failure;
7612
7613 if (rdev->wowlan) {
7614 struct nlattr *nl_wowlan;
7615
7616 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7617 if (!nl_wowlan)
7618 goto nla_put_failure;
7619
7620 if ((rdev->wowlan->any &&
7621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7622 (rdev->wowlan->disconnect &&
7623 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7624 (rdev->wowlan->magic_pkt &&
7625 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7626 (rdev->wowlan->gtk_rekey_failure &&
7627 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7628 (rdev->wowlan->eap_identity_req &&
7629 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7630 (rdev->wowlan->four_way_handshake &&
7631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7632 (rdev->wowlan->rfkill_release &&
7633 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7634 goto nla_put_failure;
7635
7636 if (nl80211_send_wowlan_patterns(msg, rdev))
7637 goto nla_put_failure;
7638
7639 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
7640 goto nla_put_failure;
7641
7642 nla_nest_end(msg, nl_wowlan);
7643 }
7644
7645 genlmsg_end(msg, hdr);
7646 return genlmsg_reply(msg, info);
7647
7648 nla_put_failure:
7649 nlmsg_free(msg);
7650 return -ENOBUFS;
7651 }
7652
7653 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7654 struct nlattr *attr,
7655 struct cfg80211_wowlan *trig)
7656 {
7657 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7658 struct cfg80211_wowlan_tcp *cfg;
7659 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7660 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7661 u32 size;
7662 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7663 int err, port;
7664
7665 if (!rdev->wiphy.wowlan.tcp)
7666 return -EINVAL;
7667
7668 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7669 nla_data(attr), nla_len(attr),
7670 nl80211_wowlan_tcp_policy);
7671 if (err)
7672 return err;
7673
7674 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7675 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7676 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7677 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7678 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7679 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7680 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7681 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7682 return -EINVAL;
7683
7684 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7685 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7686 return -EINVAL;
7687
7688 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7689 rdev->wiphy.wowlan.tcp->data_interval_max ||
7690 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7691 return -EINVAL;
7692
7693 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7694 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7695 return -EINVAL;
7696
7697 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7698 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7699 return -EINVAL;
7700
7701 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7702 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7703
7704 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7705 tokens_size = tokln - sizeof(*tok);
7706
7707 if (!tok->len || tokens_size % tok->len)
7708 return -EINVAL;
7709 if (!rdev->wiphy.wowlan.tcp->tok)
7710 return -EINVAL;
7711 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7712 return -EINVAL;
7713 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7714 return -EINVAL;
7715 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7716 return -EINVAL;
7717 if (tok->offset + tok->len > data_size)
7718 return -EINVAL;
7719 }
7720
7721 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7722 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7723 if (!rdev->wiphy.wowlan.tcp->seq)
7724 return -EINVAL;
7725 if (seq->len == 0 || seq->len > 4)
7726 return -EINVAL;
7727 if (seq->len + seq->offset > data_size)
7728 return -EINVAL;
7729 }
7730
7731 size = sizeof(*cfg);
7732 size += data_size;
7733 size += wake_size + wake_mask_size;
7734 size += tokens_size;
7735
7736 cfg = kzalloc(size, GFP_KERNEL);
7737 if (!cfg)
7738 return -ENOMEM;
7739 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7740 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7741 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7742 ETH_ALEN);
7743 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7744 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7745 else
7746 port = 0;
7747 #ifdef CONFIG_INET
7748 /* allocate a socket and port for it and use it */
7749 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7750 IPPROTO_TCP, &cfg->sock, 1);
7751 if (err) {
7752 kfree(cfg);
7753 return err;
7754 }
7755 if (inet_csk_get_port(cfg->sock->sk, port)) {
7756 sock_release(cfg->sock);
7757 kfree(cfg);
7758 return -EADDRINUSE;
7759 }
7760 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7761 #else
7762 if (!port) {
7763 kfree(cfg);
7764 return -EINVAL;
7765 }
7766 cfg->src_port = port;
7767 #endif
7768
7769 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7770 cfg->payload_len = data_size;
7771 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7772 memcpy((void *)cfg->payload,
7773 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7774 data_size);
7775 if (seq)
7776 cfg->payload_seq = *seq;
7777 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7778 cfg->wake_len = wake_size;
7779 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7780 memcpy((void *)cfg->wake_data,
7781 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7782 wake_size);
7783 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7784 data_size + wake_size;
7785 memcpy((void *)cfg->wake_mask,
7786 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7787 wake_mask_size);
7788 if (tok) {
7789 cfg->tokens_size = tokens_size;
7790 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7791 }
7792
7793 trig->tcp = cfg;
7794
7795 return 0;
7796 }
7797
7798 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7799 {
7800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7801 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7802 struct cfg80211_wowlan new_triggers = {};
7803 struct cfg80211_wowlan *ntrig;
7804 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7805 int err, i;
7806 bool prev_enabled = rdev->wowlan;
7807
7808 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7809 !rdev->wiphy.wowlan.tcp)
7810 return -EOPNOTSUPP;
7811
7812 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7813 cfg80211_rdev_free_wowlan(rdev);
7814 rdev->wowlan = NULL;
7815 goto set_wakeup;
7816 }
7817
7818 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7819 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7820 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7821 nl80211_wowlan_policy);
7822 if (err)
7823 return err;
7824
7825 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7826 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7827 return -EINVAL;
7828 new_triggers.any = true;
7829 }
7830
7831 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7832 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7833 return -EINVAL;
7834 new_triggers.disconnect = true;
7835 }
7836
7837 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7838 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7839 return -EINVAL;
7840 new_triggers.magic_pkt = true;
7841 }
7842
7843 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7844 return -EINVAL;
7845
7846 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7847 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7848 return -EINVAL;
7849 new_triggers.gtk_rekey_failure = true;
7850 }
7851
7852 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7853 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7854 return -EINVAL;
7855 new_triggers.eap_identity_req = true;
7856 }
7857
7858 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7859 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7860 return -EINVAL;
7861 new_triggers.four_way_handshake = true;
7862 }
7863
7864 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7865 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7866 return -EINVAL;
7867 new_triggers.rfkill_release = true;
7868 }
7869
7870 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7871 struct nlattr *pat;
7872 int n_patterns = 0;
7873 int rem, pat_len, mask_len, pkt_offset;
7874 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7875
7876 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7877 rem)
7878 n_patterns++;
7879 if (n_patterns > wowlan->n_patterns)
7880 return -EINVAL;
7881
7882 new_triggers.patterns = kcalloc(n_patterns,
7883 sizeof(new_triggers.patterns[0]),
7884 GFP_KERNEL);
7885 if (!new_triggers.patterns)
7886 return -ENOMEM;
7887
7888 new_triggers.n_patterns = n_patterns;
7889 i = 0;
7890
7891 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7892 rem) {
7893 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7894 nla_data(pat), nla_len(pat), NULL);
7895 err = -EINVAL;
7896 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7897 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7898 goto error;
7899 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7900 mask_len = DIV_ROUND_UP(pat_len, 8);
7901 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7902 mask_len)
7903 goto error;
7904 if (pat_len > wowlan->pattern_max_len ||
7905 pat_len < wowlan->pattern_min_len)
7906 goto error;
7907
7908 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7909 pkt_offset = 0;
7910 else
7911 pkt_offset = nla_get_u32(
7912 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7913 if (pkt_offset > wowlan->max_pkt_offset)
7914 goto error;
7915 new_triggers.patterns[i].pkt_offset = pkt_offset;
7916
7917 new_triggers.patterns[i].mask =
7918 kmalloc(mask_len + pat_len, GFP_KERNEL);
7919 if (!new_triggers.patterns[i].mask) {
7920 err = -ENOMEM;
7921 goto error;
7922 }
7923 new_triggers.patterns[i].pattern =
7924 new_triggers.patterns[i].mask + mask_len;
7925 memcpy(new_triggers.patterns[i].mask,
7926 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7927 mask_len);
7928 new_triggers.patterns[i].pattern_len = pat_len;
7929 memcpy(new_triggers.patterns[i].pattern,
7930 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7931 pat_len);
7932 i++;
7933 }
7934 }
7935
7936 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
7937 err = nl80211_parse_wowlan_tcp(
7938 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
7939 &new_triggers);
7940 if (err)
7941 goto error;
7942 }
7943
7944 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
7945 if (!ntrig) {
7946 err = -ENOMEM;
7947 goto error;
7948 }
7949 cfg80211_rdev_free_wowlan(rdev);
7950 rdev->wowlan = ntrig;
7951
7952 set_wakeup:
7953 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
7954 rdev_set_wakeup(rdev, rdev->wowlan);
7955
7956 return 0;
7957 error:
7958 for (i = 0; i < new_triggers.n_patterns; i++)
7959 kfree(new_triggers.patterns[i].mask);
7960 kfree(new_triggers.patterns);
7961 if (new_triggers.tcp && new_triggers.tcp->sock)
7962 sock_release(new_triggers.tcp->sock);
7963 kfree(new_triggers.tcp);
7964 return err;
7965 }
7966 #endif
7967
7968 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
7969 {
7970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7971 struct net_device *dev = info->user_ptr[1];
7972 struct wireless_dev *wdev = dev->ieee80211_ptr;
7973 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
7974 struct cfg80211_gtk_rekey_data rekey_data;
7975 int err;
7976
7977 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
7978 return -EINVAL;
7979
7980 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
7981 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
7982 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
7983 nl80211_rekey_policy);
7984 if (err)
7985 return err;
7986
7987 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
7988 return -ERANGE;
7989 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
7990 return -ERANGE;
7991 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
7992 return -ERANGE;
7993
7994 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
7995 NL80211_KEK_LEN);
7996 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
7997 NL80211_KCK_LEN);
7998 memcpy(rekey_data.replay_ctr,
7999 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8000 NL80211_REPLAY_CTR_LEN);
8001
8002 wdev_lock(wdev);
8003 if (!wdev->current_bss) {
8004 err = -ENOTCONN;
8005 goto out;
8006 }
8007
8008 if (!rdev->ops->set_rekey_data) {
8009 err = -EOPNOTSUPP;
8010 goto out;
8011 }
8012
8013 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8014 out:
8015 wdev_unlock(wdev);
8016 return err;
8017 }
8018
8019 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8020 struct genl_info *info)
8021 {
8022 struct net_device *dev = info->user_ptr[1];
8023 struct wireless_dev *wdev = dev->ieee80211_ptr;
8024
8025 if (wdev->iftype != NL80211_IFTYPE_AP &&
8026 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8027 return -EINVAL;
8028
8029 if (wdev->ap_unexpected_nlportid)
8030 return -EBUSY;
8031
8032 wdev->ap_unexpected_nlportid = info->snd_portid;
8033 return 0;
8034 }
8035
8036 static int nl80211_probe_client(struct sk_buff *skb,
8037 struct genl_info *info)
8038 {
8039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8040 struct net_device *dev = info->user_ptr[1];
8041 struct wireless_dev *wdev = dev->ieee80211_ptr;
8042 struct sk_buff *msg;
8043 void *hdr;
8044 const u8 *addr;
8045 u64 cookie;
8046 int err;
8047
8048 if (wdev->iftype != NL80211_IFTYPE_AP &&
8049 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8050 return -EOPNOTSUPP;
8051
8052 if (!info->attrs[NL80211_ATTR_MAC])
8053 return -EINVAL;
8054
8055 if (!rdev->ops->probe_client)
8056 return -EOPNOTSUPP;
8057
8058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8059 if (!msg)
8060 return -ENOMEM;
8061
8062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8063 NL80211_CMD_PROBE_CLIENT);
8064
8065 if (IS_ERR(hdr)) {
8066 err = PTR_ERR(hdr);
8067 goto free_msg;
8068 }
8069
8070 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8071
8072 err = rdev_probe_client(rdev, dev, addr, &cookie);
8073 if (err)
8074 goto free_msg;
8075
8076 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8077 goto nla_put_failure;
8078
8079 genlmsg_end(msg, hdr);
8080
8081 return genlmsg_reply(msg, info);
8082
8083 nla_put_failure:
8084 err = -ENOBUFS;
8085 free_msg:
8086 nlmsg_free(msg);
8087 return err;
8088 }
8089
8090 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8091 {
8092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8093 struct cfg80211_beacon_registration *reg, *nreg;
8094 int rv;
8095
8096 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8097 return -EOPNOTSUPP;
8098
8099 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8100 if (!nreg)
8101 return -ENOMEM;
8102
8103 /* First, check if already registered. */
8104 spin_lock_bh(&rdev->beacon_registrations_lock);
8105 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8106 if (reg->nlportid == info->snd_portid) {
8107 rv = -EALREADY;
8108 goto out_err;
8109 }
8110 }
8111 /* Add it to the list */
8112 nreg->nlportid = info->snd_portid;
8113 list_add(&nreg->list, &rdev->beacon_registrations);
8114
8115 spin_unlock_bh(&rdev->beacon_registrations_lock);
8116
8117 return 0;
8118 out_err:
8119 spin_unlock_bh(&rdev->beacon_registrations_lock);
8120 kfree(nreg);
8121 return rv;
8122 }
8123
8124 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8125 {
8126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8127 struct wireless_dev *wdev = info->user_ptr[1];
8128 int err;
8129
8130 if (!rdev->ops->start_p2p_device)
8131 return -EOPNOTSUPP;
8132
8133 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8134 return -EOPNOTSUPP;
8135
8136 if (wdev->p2p_started)
8137 return 0;
8138
8139 mutex_lock(&rdev->devlist_mtx);
8140 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8141 mutex_unlock(&rdev->devlist_mtx);
8142 if (err)
8143 return err;
8144
8145 err = rdev_start_p2p_device(rdev, wdev);
8146 if (err)
8147 return err;
8148
8149 wdev->p2p_started = true;
8150 mutex_lock(&rdev->devlist_mtx);
8151 rdev->opencount++;
8152 mutex_unlock(&rdev->devlist_mtx);
8153
8154 return 0;
8155 }
8156
8157 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8158 {
8159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8160 struct wireless_dev *wdev = info->user_ptr[1];
8161
8162 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8163 return -EOPNOTSUPP;
8164
8165 if (!rdev->ops->stop_p2p_device)
8166 return -EOPNOTSUPP;
8167
8168 mutex_lock(&rdev->devlist_mtx);
8169 mutex_lock(&rdev->sched_scan_mtx);
8170 cfg80211_stop_p2p_device(rdev, wdev);
8171 mutex_unlock(&rdev->sched_scan_mtx);
8172 mutex_unlock(&rdev->devlist_mtx);
8173
8174 return 0;
8175 }
8176
8177 static int nl80211_get_protocol_features(struct sk_buff *skb,
8178 struct genl_info *info)
8179 {
8180 void *hdr;
8181 struct sk_buff *msg;
8182
8183 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8184 if (!msg)
8185 return -ENOMEM;
8186
8187 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8188 NL80211_CMD_GET_PROTOCOL_FEATURES);
8189 if (!hdr)
8190 goto nla_put_failure;
8191
8192 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8193 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8194 goto nla_put_failure;
8195
8196 genlmsg_end(msg, hdr);
8197 return genlmsg_reply(msg, info);
8198
8199 nla_put_failure:
8200 kfree_skb(msg);
8201 return -ENOBUFS;
8202 }
8203
8204 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8205 {
8206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8207 struct cfg80211_update_ft_ies_params ft_params;
8208 struct net_device *dev = info->user_ptr[1];
8209
8210 if (!rdev->ops->update_ft_ies)
8211 return -EOPNOTSUPP;
8212
8213 if (!info->attrs[NL80211_ATTR_MDID] ||
8214 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8215 return -EINVAL;
8216
8217 memset(&ft_params, 0, sizeof(ft_params));
8218 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8219 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8220 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8221
8222 return rdev_update_ft_ies(rdev, dev, &ft_params);
8223 }
8224
8225 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8226 struct genl_info *info)
8227 {
8228 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8229 struct wireless_dev *wdev = info->user_ptr[1];
8230 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8231 u16 duration;
8232 int ret;
8233
8234 if (!rdev->ops->crit_proto_start)
8235 return -EOPNOTSUPP;
8236
8237 if (WARN_ON(!rdev->ops->crit_proto_stop))
8238 return -EINVAL;
8239
8240 if (rdev->crit_proto_nlportid)
8241 return -EBUSY;
8242
8243 /* determine protocol if provided */
8244 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8245 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8246
8247 if (proto >= NUM_NL80211_CRIT_PROTO)
8248 return -EINVAL;
8249
8250 /* timeout must be provided */
8251 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8252 return -EINVAL;
8253
8254 duration =
8255 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8256
8257 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8258 return -ERANGE;
8259
8260 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8261 if (!ret)
8262 rdev->crit_proto_nlportid = info->snd_portid;
8263
8264 return ret;
8265 }
8266
8267 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8268 struct genl_info *info)
8269 {
8270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8271 struct wireless_dev *wdev = info->user_ptr[1];
8272
8273 if (!rdev->ops->crit_proto_stop)
8274 return -EOPNOTSUPP;
8275
8276 if (rdev->crit_proto_nlportid) {
8277 rdev->crit_proto_nlportid = 0;
8278 rdev_crit_proto_stop(rdev, wdev);
8279 }
8280 return 0;
8281 }
8282
8283 #define NL80211_FLAG_NEED_WIPHY 0x01
8284 #define NL80211_FLAG_NEED_NETDEV 0x02
8285 #define NL80211_FLAG_NEED_RTNL 0x04
8286 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8287 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8288 NL80211_FLAG_CHECK_NETDEV_UP)
8289 #define NL80211_FLAG_NEED_WDEV 0x10
8290 /* If a netdev is associated, it must be UP, P2P must be started */
8291 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8292 NL80211_FLAG_CHECK_NETDEV_UP)
8293
8294 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8295 struct genl_info *info)
8296 {
8297 struct cfg80211_registered_device *rdev;
8298 struct wireless_dev *wdev;
8299 struct net_device *dev;
8300 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8301
8302 if (rtnl)
8303 rtnl_lock();
8304
8305 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8306 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8307 if (IS_ERR(rdev)) {
8308 if (rtnl)
8309 rtnl_unlock();
8310 return PTR_ERR(rdev);
8311 }
8312 info->user_ptr[0] = rdev;
8313 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8314 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8315 mutex_lock(&cfg80211_mutex);
8316 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8317 info->attrs);
8318 if (IS_ERR(wdev)) {
8319 mutex_unlock(&cfg80211_mutex);
8320 if (rtnl)
8321 rtnl_unlock();
8322 return PTR_ERR(wdev);
8323 }
8324
8325 dev = wdev->netdev;
8326 rdev = wiphy_to_dev(wdev->wiphy);
8327
8328 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8329 if (!dev) {
8330 mutex_unlock(&cfg80211_mutex);
8331 if (rtnl)
8332 rtnl_unlock();
8333 return -EINVAL;
8334 }
8335
8336 info->user_ptr[1] = dev;
8337 } else {
8338 info->user_ptr[1] = wdev;
8339 }
8340
8341 if (dev) {
8342 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8343 !netif_running(dev)) {
8344 mutex_unlock(&cfg80211_mutex);
8345 if (rtnl)
8346 rtnl_unlock();
8347 return -ENETDOWN;
8348 }
8349
8350 dev_hold(dev);
8351 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8352 if (!wdev->p2p_started) {
8353 mutex_unlock(&cfg80211_mutex);
8354 if (rtnl)
8355 rtnl_unlock();
8356 return -ENETDOWN;
8357 }
8358 }
8359
8360 cfg80211_lock_rdev(rdev);
8361
8362 mutex_unlock(&cfg80211_mutex);
8363
8364 info->user_ptr[0] = rdev;
8365 }
8366
8367 return 0;
8368 }
8369
8370 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8371 struct genl_info *info)
8372 {
8373 if (info->user_ptr[0])
8374 cfg80211_unlock_rdev(info->user_ptr[0]);
8375 if (info->user_ptr[1]) {
8376 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8377 struct wireless_dev *wdev = info->user_ptr[1];
8378
8379 if (wdev->netdev)
8380 dev_put(wdev->netdev);
8381 } else {
8382 dev_put(info->user_ptr[1]);
8383 }
8384 }
8385 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8386 rtnl_unlock();
8387 }
8388
8389 static struct genl_ops nl80211_ops[] = {
8390 {
8391 .cmd = NL80211_CMD_GET_WIPHY,
8392 .doit = nl80211_get_wiphy,
8393 .dumpit = nl80211_dump_wiphy,
8394 .policy = nl80211_policy,
8395 /* can be retrieved by unprivileged users */
8396 .internal_flags = NL80211_FLAG_NEED_WIPHY,
8397 },
8398 {
8399 .cmd = NL80211_CMD_SET_WIPHY,
8400 .doit = nl80211_set_wiphy,
8401 .policy = nl80211_policy,
8402 .flags = GENL_ADMIN_PERM,
8403 .internal_flags = NL80211_FLAG_NEED_RTNL,
8404 },
8405 {
8406 .cmd = NL80211_CMD_GET_INTERFACE,
8407 .doit = nl80211_get_interface,
8408 .dumpit = nl80211_dump_interface,
8409 .policy = nl80211_policy,
8410 /* can be retrieved by unprivileged users */
8411 .internal_flags = NL80211_FLAG_NEED_WDEV,
8412 },
8413 {
8414 .cmd = NL80211_CMD_SET_INTERFACE,
8415 .doit = nl80211_set_interface,
8416 .policy = nl80211_policy,
8417 .flags = GENL_ADMIN_PERM,
8418 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8419 NL80211_FLAG_NEED_RTNL,
8420 },
8421 {
8422 .cmd = NL80211_CMD_NEW_INTERFACE,
8423 .doit = nl80211_new_interface,
8424 .policy = nl80211_policy,
8425 .flags = GENL_ADMIN_PERM,
8426 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8427 NL80211_FLAG_NEED_RTNL,
8428 },
8429 {
8430 .cmd = NL80211_CMD_DEL_INTERFACE,
8431 .doit = nl80211_del_interface,
8432 .policy = nl80211_policy,
8433 .flags = GENL_ADMIN_PERM,
8434 .internal_flags = NL80211_FLAG_NEED_WDEV |
8435 NL80211_FLAG_NEED_RTNL,
8436 },
8437 {
8438 .cmd = NL80211_CMD_GET_KEY,
8439 .doit = nl80211_get_key,
8440 .policy = nl80211_policy,
8441 .flags = GENL_ADMIN_PERM,
8442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8443 NL80211_FLAG_NEED_RTNL,
8444 },
8445 {
8446 .cmd = NL80211_CMD_SET_KEY,
8447 .doit = nl80211_set_key,
8448 .policy = nl80211_policy,
8449 .flags = GENL_ADMIN_PERM,
8450 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8451 NL80211_FLAG_NEED_RTNL,
8452 },
8453 {
8454 .cmd = NL80211_CMD_NEW_KEY,
8455 .doit = nl80211_new_key,
8456 .policy = nl80211_policy,
8457 .flags = GENL_ADMIN_PERM,
8458 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8459 NL80211_FLAG_NEED_RTNL,
8460 },
8461 {
8462 .cmd = NL80211_CMD_DEL_KEY,
8463 .doit = nl80211_del_key,
8464 .policy = nl80211_policy,
8465 .flags = GENL_ADMIN_PERM,
8466 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8467 NL80211_FLAG_NEED_RTNL,
8468 },
8469 {
8470 .cmd = NL80211_CMD_SET_BEACON,
8471 .policy = nl80211_policy,
8472 .flags = GENL_ADMIN_PERM,
8473 .doit = nl80211_set_beacon,
8474 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8475 NL80211_FLAG_NEED_RTNL,
8476 },
8477 {
8478 .cmd = NL80211_CMD_START_AP,
8479 .policy = nl80211_policy,
8480 .flags = GENL_ADMIN_PERM,
8481 .doit = nl80211_start_ap,
8482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8483 NL80211_FLAG_NEED_RTNL,
8484 },
8485 {
8486 .cmd = NL80211_CMD_STOP_AP,
8487 .policy = nl80211_policy,
8488 .flags = GENL_ADMIN_PERM,
8489 .doit = nl80211_stop_ap,
8490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8491 NL80211_FLAG_NEED_RTNL,
8492 },
8493 {
8494 .cmd = NL80211_CMD_GET_STATION,
8495 .doit = nl80211_get_station,
8496 .dumpit = nl80211_dump_station,
8497 .policy = nl80211_policy,
8498 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8499 NL80211_FLAG_NEED_RTNL,
8500 },
8501 {
8502 .cmd = NL80211_CMD_SET_STATION,
8503 .doit = nl80211_set_station,
8504 .policy = nl80211_policy,
8505 .flags = GENL_ADMIN_PERM,
8506 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8507 NL80211_FLAG_NEED_RTNL,
8508 },
8509 {
8510 .cmd = NL80211_CMD_NEW_STATION,
8511 .doit = nl80211_new_station,
8512 .policy = nl80211_policy,
8513 .flags = GENL_ADMIN_PERM,
8514 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8515 NL80211_FLAG_NEED_RTNL,
8516 },
8517 {
8518 .cmd = NL80211_CMD_DEL_STATION,
8519 .doit = nl80211_del_station,
8520 .policy = nl80211_policy,
8521 .flags = GENL_ADMIN_PERM,
8522 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8523 NL80211_FLAG_NEED_RTNL,
8524 },
8525 {
8526 .cmd = NL80211_CMD_GET_MPATH,
8527 .doit = nl80211_get_mpath,
8528 .dumpit = nl80211_dump_mpath,
8529 .policy = nl80211_policy,
8530 .flags = GENL_ADMIN_PERM,
8531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8532 NL80211_FLAG_NEED_RTNL,
8533 },
8534 {
8535 .cmd = NL80211_CMD_SET_MPATH,
8536 .doit = nl80211_set_mpath,
8537 .policy = nl80211_policy,
8538 .flags = GENL_ADMIN_PERM,
8539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8540 NL80211_FLAG_NEED_RTNL,
8541 },
8542 {
8543 .cmd = NL80211_CMD_NEW_MPATH,
8544 .doit = nl80211_new_mpath,
8545 .policy = nl80211_policy,
8546 .flags = GENL_ADMIN_PERM,
8547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8548 NL80211_FLAG_NEED_RTNL,
8549 },
8550 {
8551 .cmd = NL80211_CMD_DEL_MPATH,
8552 .doit = nl80211_del_mpath,
8553 .policy = nl80211_policy,
8554 .flags = GENL_ADMIN_PERM,
8555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8556 NL80211_FLAG_NEED_RTNL,
8557 },
8558 {
8559 .cmd = NL80211_CMD_SET_BSS,
8560 .doit = nl80211_set_bss,
8561 .policy = nl80211_policy,
8562 .flags = GENL_ADMIN_PERM,
8563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8564 NL80211_FLAG_NEED_RTNL,
8565 },
8566 {
8567 .cmd = NL80211_CMD_GET_REG,
8568 .doit = nl80211_get_reg,
8569 .policy = nl80211_policy,
8570 /* can be retrieved by unprivileged users */
8571 },
8572 {
8573 .cmd = NL80211_CMD_SET_REG,
8574 .doit = nl80211_set_reg,
8575 .policy = nl80211_policy,
8576 .flags = GENL_ADMIN_PERM,
8577 },
8578 {
8579 .cmd = NL80211_CMD_REQ_SET_REG,
8580 .doit = nl80211_req_set_reg,
8581 .policy = nl80211_policy,
8582 .flags = GENL_ADMIN_PERM,
8583 },
8584 {
8585 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8586 .doit = nl80211_get_mesh_config,
8587 .policy = nl80211_policy,
8588 /* can be retrieved by unprivileged users */
8589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8590 NL80211_FLAG_NEED_RTNL,
8591 },
8592 {
8593 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8594 .doit = nl80211_update_mesh_config,
8595 .policy = nl80211_policy,
8596 .flags = GENL_ADMIN_PERM,
8597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8598 NL80211_FLAG_NEED_RTNL,
8599 },
8600 {
8601 .cmd = NL80211_CMD_TRIGGER_SCAN,
8602 .doit = nl80211_trigger_scan,
8603 .policy = nl80211_policy,
8604 .flags = GENL_ADMIN_PERM,
8605 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8606 NL80211_FLAG_NEED_RTNL,
8607 },
8608 {
8609 .cmd = NL80211_CMD_GET_SCAN,
8610 .policy = nl80211_policy,
8611 .dumpit = nl80211_dump_scan,
8612 },
8613 {
8614 .cmd = NL80211_CMD_START_SCHED_SCAN,
8615 .doit = nl80211_start_sched_scan,
8616 .policy = nl80211_policy,
8617 .flags = GENL_ADMIN_PERM,
8618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8619 NL80211_FLAG_NEED_RTNL,
8620 },
8621 {
8622 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8623 .doit = nl80211_stop_sched_scan,
8624 .policy = nl80211_policy,
8625 .flags = GENL_ADMIN_PERM,
8626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8627 NL80211_FLAG_NEED_RTNL,
8628 },
8629 {
8630 .cmd = NL80211_CMD_AUTHENTICATE,
8631 .doit = nl80211_authenticate,
8632 .policy = nl80211_policy,
8633 .flags = GENL_ADMIN_PERM,
8634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8635 NL80211_FLAG_NEED_RTNL,
8636 },
8637 {
8638 .cmd = NL80211_CMD_ASSOCIATE,
8639 .doit = nl80211_associate,
8640 .policy = nl80211_policy,
8641 .flags = GENL_ADMIN_PERM,
8642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8643 NL80211_FLAG_NEED_RTNL,
8644 },
8645 {
8646 .cmd = NL80211_CMD_DEAUTHENTICATE,
8647 .doit = nl80211_deauthenticate,
8648 .policy = nl80211_policy,
8649 .flags = GENL_ADMIN_PERM,
8650 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8651 NL80211_FLAG_NEED_RTNL,
8652 },
8653 {
8654 .cmd = NL80211_CMD_DISASSOCIATE,
8655 .doit = nl80211_disassociate,
8656 .policy = nl80211_policy,
8657 .flags = GENL_ADMIN_PERM,
8658 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8659 NL80211_FLAG_NEED_RTNL,
8660 },
8661 {
8662 .cmd = NL80211_CMD_JOIN_IBSS,
8663 .doit = nl80211_join_ibss,
8664 .policy = nl80211_policy,
8665 .flags = GENL_ADMIN_PERM,
8666 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8667 NL80211_FLAG_NEED_RTNL,
8668 },
8669 {
8670 .cmd = NL80211_CMD_LEAVE_IBSS,
8671 .doit = nl80211_leave_ibss,
8672 .policy = nl80211_policy,
8673 .flags = GENL_ADMIN_PERM,
8674 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8675 NL80211_FLAG_NEED_RTNL,
8676 },
8677 #ifdef CONFIG_NL80211_TESTMODE
8678 {
8679 .cmd = NL80211_CMD_TESTMODE,
8680 .doit = nl80211_testmode_do,
8681 .dumpit = nl80211_testmode_dump,
8682 .policy = nl80211_policy,
8683 .flags = GENL_ADMIN_PERM,
8684 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8685 NL80211_FLAG_NEED_RTNL,
8686 },
8687 #endif
8688 {
8689 .cmd = NL80211_CMD_CONNECT,
8690 .doit = nl80211_connect,
8691 .policy = nl80211_policy,
8692 .flags = GENL_ADMIN_PERM,
8693 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8694 NL80211_FLAG_NEED_RTNL,
8695 },
8696 {
8697 .cmd = NL80211_CMD_DISCONNECT,
8698 .doit = nl80211_disconnect,
8699 .policy = nl80211_policy,
8700 .flags = GENL_ADMIN_PERM,
8701 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8702 NL80211_FLAG_NEED_RTNL,
8703 },
8704 {
8705 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8706 .doit = nl80211_wiphy_netns,
8707 .policy = nl80211_policy,
8708 .flags = GENL_ADMIN_PERM,
8709 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8710 NL80211_FLAG_NEED_RTNL,
8711 },
8712 {
8713 .cmd = NL80211_CMD_GET_SURVEY,
8714 .policy = nl80211_policy,
8715 .dumpit = nl80211_dump_survey,
8716 },
8717 {
8718 .cmd = NL80211_CMD_SET_PMKSA,
8719 .doit = nl80211_setdel_pmksa,
8720 .policy = nl80211_policy,
8721 .flags = GENL_ADMIN_PERM,
8722 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8723 NL80211_FLAG_NEED_RTNL,
8724 },
8725 {
8726 .cmd = NL80211_CMD_DEL_PMKSA,
8727 .doit = nl80211_setdel_pmksa,
8728 .policy = nl80211_policy,
8729 .flags = GENL_ADMIN_PERM,
8730 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8731 NL80211_FLAG_NEED_RTNL,
8732 },
8733 {
8734 .cmd = NL80211_CMD_FLUSH_PMKSA,
8735 .doit = nl80211_flush_pmksa,
8736 .policy = nl80211_policy,
8737 .flags = GENL_ADMIN_PERM,
8738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8739 NL80211_FLAG_NEED_RTNL,
8740 },
8741 {
8742 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8743 .doit = nl80211_remain_on_channel,
8744 .policy = nl80211_policy,
8745 .flags = GENL_ADMIN_PERM,
8746 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8747 NL80211_FLAG_NEED_RTNL,
8748 },
8749 {
8750 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8751 .doit = nl80211_cancel_remain_on_channel,
8752 .policy = nl80211_policy,
8753 .flags = GENL_ADMIN_PERM,
8754 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8755 NL80211_FLAG_NEED_RTNL,
8756 },
8757 {
8758 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8759 .doit = nl80211_set_tx_bitrate_mask,
8760 .policy = nl80211_policy,
8761 .flags = GENL_ADMIN_PERM,
8762 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8763 NL80211_FLAG_NEED_RTNL,
8764 },
8765 {
8766 .cmd = NL80211_CMD_REGISTER_FRAME,
8767 .doit = nl80211_register_mgmt,
8768 .policy = nl80211_policy,
8769 .flags = GENL_ADMIN_PERM,
8770 .internal_flags = NL80211_FLAG_NEED_WDEV |
8771 NL80211_FLAG_NEED_RTNL,
8772 },
8773 {
8774 .cmd = NL80211_CMD_FRAME,
8775 .doit = nl80211_tx_mgmt,
8776 .policy = nl80211_policy,
8777 .flags = GENL_ADMIN_PERM,
8778 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8779 NL80211_FLAG_NEED_RTNL,
8780 },
8781 {
8782 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8783 .doit = nl80211_tx_mgmt_cancel_wait,
8784 .policy = nl80211_policy,
8785 .flags = GENL_ADMIN_PERM,
8786 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8787 NL80211_FLAG_NEED_RTNL,
8788 },
8789 {
8790 .cmd = NL80211_CMD_SET_POWER_SAVE,
8791 .doit = nl80211_set_power_save,
8792 .policy = nl80211_policy,
8793 .flags = GENL_ADMIN_PERM,
8794 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8795 NL80211_FLAG_NEED_RTNL,
8796 },
8797 {
8798 .cmd = NL80211_CMD_GET_POWER_SAVE,
8799 .doit = nl80211_get_power_save,
8800 .policy = nl80211_policy,
8801 /* can be retrieved by unprivileged users */
8802 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8803 NL80211_FLAG_NEED_RTNL,
8804 },
8805 {
8806 .cmd = NL80211_CMD_SET_CQM,
8807 .doit = nl80211_set_cqm,
8808 .policy = nl80211_policy,
8809 .flags = GENL_ADMIN_PERM,
8810 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8811 NL80211_FLAG_NEED_RTNL,
8812 },
8813 {
8814 .cmd = NL80211_CMD_SET_CHANNEL,
8815 .doit = nl80211_set_channel,
8816 .policy = nl80211_policy,
8817 .flags = GENL_ADMIN_PERM,
8818 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8819 NL80211_FLAG_NEED_RTNL,
8820 },
8821 {
8822 .cmd = NL80211_CMD_SET_WDS_PEER,
8823 .doit = nl80211_set_wds_peer,
8824 .policy = nl80211_policy,
8825 .flags = GENL_ADMIN_PERM,
8826 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8827 NL80211_FLAG_NEED_RTNL,
8828 },
8829 {
8830 .cmd = NL80211_CMD_JOIN_MESH,
8831 .doit = nl80211_join_mesh,
8832 .policy = nl80211_policy,
8833 .flags = GENL_ADMIN_PERM,
8834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8835 NL80211_FLAG_NEED_RTNL,
8836 },
8837 {
8838 .cmd = NL80211_CMD_LEAVE_MESH,
8839 .doit = nl80211_leave_mesh,
8840 .policy = nl80211_policy,
8841 .flags = GENL_ADMIN_PERM,
8842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8843 NL80211_FLAG_NEED_RTNL,
8844 },
8845 #ifdef CONFIG_PM
8846 {
8847 .cmd = NL80211_CMD_GET_WOWLAN,
8848 .doit = nl80211_get_wowlan,
8849 .policy = nl80211_policy,
8850 /* can be retrieved by unprivileged users */
8851 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8852 NL80211_FLAG_NEED_RTNL,
8853 },
8854 {
8855 .cmd = NL80211_CMD_SET_WOWLAN,
8856 .doit = nl80211_set_wowlan,
8857 .policy = nl80211_policy,
8858 .flags = GENL_ADMIN_PERM,
8859 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8860 NL80211_FLAG_NEED_RTNL,
8861 },
8862 #endif
8863 {
8864 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8865 .doit = nl80211_set_rekey_data,
8866 .policy = nl80211_policy,
8867 .flags = GENL_ADMIN_PERM,
8868 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8869 NL80211_FLAG_NEED_RTNL,
8870 },
8871 {
8872 .cmd = NL80211_CMD_TDLS_MGMT,
8873 .doit = nl80211_tdls_mgmt,
8874 .policy = nl80211_policy,
8875 .flags = GENL_ADMIN_PERM,
8876 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8877 NL80211_FLAG_NEED_RTNL,
8878 },
8879 {
8880 .cmd = NL80211_CMD_TDLS_OPER,
8881 .doit = nl80211_tdls_oper,
8882 .policy = nl80211_policy,
8883 .flags = GENL_ADMIN_PERM,
8884 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8885 NL80211_FLAG_NEED_RTNL,
8886 },
8887 {
8888 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8889 .doit = nl80211_register_unexpected_frame,
8890 .policy = nl80211_policy,
8891 .flags = GENL_ADMIN_PERM,
8892 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8893 NL80211_FLAG_NEED_RTNL,
8894 },
8895 {
8896 .cmd = NL80211_CMD_PROBE_CLIENT,
8897 .doit = nl80211_probe_client,
8898 .policy = nl80211_policy,
8899 .flags = GENL_ADMIN_PERM,
8900 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8901 NL80211_FLAG_NEED_RTNL,
8902 },
8903 {
8904 .cmd = NL80211_CMD_REGISTER_BEACONS,
8905 .doit = nl80211_register_beacons,
8906 .policy = nl80211_policy,
8907 .flags = GENL_ADMIN_PERM,
8908 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8909 NL80211_FLAG_NEED_RTNL,
8910 },
8911 {
8912 .cmd = NL80211_CMD_SET_NOACK_MAP,
8913 .doit = nl80211_set_noack_map,
8914 .policy = nl80211_policy,
8915 .flags = GENL_ADMIN_PERM,
8916 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8917 NL80211_FLAG_NEED_RTNL,
8918 },
8919 {
8920 .cmd = NL80211_CMD_START_P2P_DEVICE,
8921 .doit = nl80211_start_p2p_device,
8922 .policy = nl80211_policy,
8923 .flags = GENL_ADMIN_PERM,
8924 .internal_flags = NL80211_FLAG_NEED_WDEV |
8925 NL80211_FLAG_NEED_RTNL,
8926 },
8927 {
8928 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8929 .doit = nl80211_stop_p2p_device,
8930 .policy = nl80211_policy,
8931 .flags = GENL_ADMIN_PERM,
8932 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8933 NL80211_FLAG_NEED_RTNL,
8934 },
8935 {
8936 .cmd = NL80211_CMD_SET_MCAST_RATE,
8937 .doit = nl80211_set_mcast_rate,
8938 .policy = nl80211_policy,
8939 .flags = GENL_ADMIN_PERM,
8940 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8941 NL80211_FLAG_NEED_RTNL,
8942 },
8943 {
8944 .cmd = NL80211_CMD_SET_MAC_ACL,
8945 .doit = nl80211_set_mac_acl,
8946 .policy = nl80211_policy,
8947 .flags = GENL_ADMIN_PERM,
8948 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8949 NL80211_FLAG_NEED_RTNL,
8950 },
8951 {
8952 .cmd = NL80211_CMD_RADAR_DETECT,
8953 .doit = nl80211_start_radar_detection,
8954 .policy = nl80211_policy,
8955 .flags = GENL_ADMIN_PERM,
8956 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8957 NL80211_FLAG_NEED_RTNL,
8958 },
8959 {
8960 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
8961 .doit = nl80211_get_protocol_features,
8962 .policy = nl80211_policy,
8963 },
8964 {
8965 .cmd = NL80211_CMD_UPDATE_FT_IES,
8966 .doit = nl80211_update_ft_ies,
8967 .policy = nl80211_policy,
8968 .flags = GENL_ADMIN_PERM,
8969 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8970 NL80211_FLAG_NEED_RTNL,
8971 },
8972 {
8973 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
8974 .doit = nl80211_crit_protocol_start,
8975 .policy = nl80211_policy,
8976 .flags = GENL_ADMIN_PERM,
8977 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8978 NL80211_FLAG_NEED_RTNL,
8979 },
8980 {
8981 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
8982 .doit = nl80211_crit_protocol_stop,
8983 .policy = nl80211_policy,
8984 .flags = GENL_ADMIN_PERM,
8985 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8986 NL80211_FLAG_NEED_RTNL,
8987 }
8988 };
8989
8990 static struct genl_multicast_group nl80211_mlme_mcgrp = {
8991 .name = "mlme",
8992 };
8993
8994 /* multicast groups */
8995 static struct genl_multicast_group nl80211_config_mcgrp = {
8996 .name = "config",
8997 };
8998 static struct genl_multicast_group nl80211_scan_mcgrp = {
8999 .name = "scan",
9000 };
9001 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9002 .name = "regulatory",
9003 };
9004
9005 /* notification functions */
9006
9007 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9008 {
9009 struct sk_buff *msg;
9010
9011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9012 if (!msg)
9013 return;
9014
9015 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
9016 false, NULL, NULL, NULL) < 0) {
9017 nlmsg_free(msg);
9018 return;
9019 }
9020
9021 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9022 nl80211_config_mcgrp.id, GFP_KERNEL);
9023 }
9024
9025 static int nl80211_add_scan_req(struct sk_buff *msg,
9026 struct cfg80211_registered_device *rdev)
9027 {
9028 struct cfg80211_scan_request *req = rdev->scan_req;
9029 struct nlattr *nest;
9030 int i;
9031
9032 lockdep_assert_held(&rdev->sched_scan_mtx);
9033
9034 if (WARN_ON(!req))
9035 return 0;
9036
9037 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9038 if (!nest)
9039 goto nla_put_failure;
9040 for (i = 0; i < req->n_ssids; i++) {
9041 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9042 goto nla_put_failure;
9043 }
9044 nla_nest_end(msg, nest);
9045
9046 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9047 if (!nest)
9048 goto nla_put_failure;
9049 for (i = 0; i < req->n_channels; i++) {
9050 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9051 goto nla_put_failure;
9052 }
9053 nla_nest_end(msg, nest);
9054
9055 if (req->ie &&
9056 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9057 goto nla_put_failure;
9058
9059 if (req->flags)
9060 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9061
9062 return 0;
9063 nla_put_failure:
9064 return -ENOBUFS;
9065 }
9066
9067 static int nl80211_send_scan_msg(struct sk_buff *msg,
9068 struct cfg80211_registered_device *rdev,
9069 struct wireless_dev *wdev,
9070 u32 portid, u32 seq, int flags,
9071 u32 cmd)
9072 {
9073 void *hdr;
9074
9075 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9076 if (!hdr)
9077 return -1;
9078
9079 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9080 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9081 wdev->netdev->ifindex)) ||
9082 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9083 goto nla_put_failure;
9084
9085 /* ignore errors and send incomplete event anyway */
9086 nl80211_add_scan_req(msg, rdev);
9087
9088 return genlmsg_end(msg, hdr);
9089
9090 nla_put_failure:
9091 genlmsg_cancel(msg, hdr);
9092 return -EMSGSIZE;
9093 }
9094
9095 static int
9096 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9097 struct cfg80211_registered_device *rdev,
9098 struct net_device *netdev,
9099 u32 portid, u32 seq, int flags, u32 cmd)
9100 {
9101 void *hdr;
9102
9103 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9104 if (!hdr)
9105 return -1;
9106
9107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9108 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9109 goto nla_put_failure;
9110
9111 return genlmsg_end(msg, hdr);
9112
9113 nla_put_failure:
9114 genlmsg_cancel(msg, hdr);
9115 return -EMSGSIZE;
9116 }
9117
9118 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9119 struct wireless_dev *wdev)
9120 {
9121 struct sk_buff *msg;
9122
9123 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9124 if (!msg)
9125 return;
9126
9127 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9128 NL80211_CMD_TRIGGER_SCAN) < 0) {
9129 nlmsg_free(msg);
9130 return;
9131 }
9132
9133 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9134 nl80211_scan_mcgrp.id, GFP_KERNEL);
9135 }
9136
9137 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9138 struct wireless_dev *wdev)
9139 {
9140 struct sk_buff *msg;
9141
9142 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9143 if (!msg)
9144 return;
9145
9146 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9147 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9148 nlmsg_free(msg);
9149 return;
9150 }
9151
9152 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9153 nl80211_scan_mcgrp.id, GFP_KERNEL);
9154 }
9155
9156 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9157 struct wireless_dev *wdev)
9158 {
9159 struct sk_buff *msg;
9160
9161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9162 if (!msg)
9163 return;
9164
9165 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9166 NL80211_CMD_SCAN_ABORTED) < 0) {
9167 nlmsg_free(msg);
9168 return;
9169 }
9170
9171 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9172 nl80211_scan_mcgrp.id, GFP_KERNEL);
9173 }
9174
9175 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9176 struct net_device *netdev)
9177 {
9178 struct sk_buff *msg;
9179
9180 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9181 if (!msg)
9182 return;
9183
9184 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9185 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9186 nlmsg_free(msg);
9187 return;
9188 }
9189
9190 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9191 nl80211_scan_mcgrp.id, GFP_KERNEL);
9192 }
9193
9194 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9195 struct net_device *netdev, u32 cmd)
9196 {
9197 struct sk_buff *msg;
9198
9199 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9200 if (!msg)
9201 return;
9202
9203 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9204 nlmsg_free(msg);
9205 return;
9206 }
9207
9208 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9209 nl80211_scan_mcgrp.id, GFP_KERNEL);
9210 }
9211
9212 /*
9213 * This can happen on global regulatory changes or device specific settings
9214 * based on custom world regulatory domains.
9215 */
9216 void nl80211_send_reg_change_event(struct regulatory_request *request)
9217 {
9218 struct sk_buff *msg;
9219 void *hdr;
9220
9221 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9222 if (!msg)
9223 return;
9224
9225 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9226 if (!hdr) {
9227 nlmsg_free(msg);
9228 return;
9229 }
9230
9231 /* Userspace can always count this one always being set */
9232 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9233 goto nla_put_failure;
9234
9235 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9236 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9237 NL80211_REGDOM_TYPE_WORLD))
9238 goto nla_put_failure;
9239 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9240 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9241 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9242 goto nla_put_failure;
9243 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9244 request->intersect) {
9245 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9246 NL80211_REGDOM_TYPE_INTERSECTION))
9247 goto nla_put_failure;
9248 } else {
9249 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9250 NL80211_REGDOM_TYPE_COUNTRY) ||
9251 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9252 request->alpha2))
9253 goto nla_put_failure;
9254 }
9255
9256 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9257 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9258 goto nla_put_failure;
9259
9260 genlmsg_end(msg, hdr);
9261
9262 rcu_read_lock();
9263 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9264 GFP_ATOMIC);
9265 rcu_read_unlock();
9266
9267 return;
9268
9269 nla_put_failure:
9270 genlmsg_cancel(msg, hdr);
9271 nlmsg_free(msg);
9272 }
9273
9274 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9275 struct net_device *netdev,
9276 const u8 *buf, size_t len,
9277 enum nl80211_commands cmd, gfp_t gfp)
9278 {
9279 struct sk_buff *msg;
9280 void *hdr;
9281
9282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9283 if (!msg)
9284 return;
9285
9286 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9287 if (!hdr) {
9288 nlmsg_free(msg);
9289 return;
9290 }
9291
9292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9294 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9295 goto nla_put_failure;
9296
9297 genlmsg_end(msg, hdr);
9298
9299 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9300 nl80211_mlme_mcgrp.id, gfp);
9301 return;
9302
9303 nla_put_failure:
9304 genlmsg_cancel(msg, hdr);
9305 nlmsg_free(msg);
9306 }
9307
9308 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9309 struct net_device *netdev, const u8 *buf,
9310 size_t len, gfp_t gfp)
9311 {
9312 nl80211_send_mlme_event(rdev, netdev, buf, len,
9313 NL80211_CMD_AUTHENTICATE, gfp);
9314 }
9315
9316 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9317 struct net_device *netdev, const u8 *buf,
9318 size_t len, gfp_t gfp)
9319 {
9320 nl80211_send_mlme_event(rdev, netdev, buf, len,
9321 NL80211_CMD_ASSOCIATE, gfp);
9322 }
9323
9324 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9325 struct net_device *netdev, const u8 *buf,
9326 size_t len, gfp_t gfp)
9327 {
9328 nl80211_send_mlme_event(rdev, netdev, buf, len,
9329 NL80211_CMD_DEAUTHENTICATE, gfp);
9330 }
9331
9332 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9333 struct net_device *netdev, const u8 *buf,
9334 size_t len, gfp_t gfp)
9335 {
9336 nl80211_send_mlme_event(rdev, netdev, buf, len,
9337 NL80211_CMD_DISASSOCIATE, gfp);
9338 }
9339
9340 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9341 size_t len)
9342 {
9343 struct wireless_dev *wdev = dev->ieee80211_ptr;
9344 struct wiphy *wiphy = wdev->wiphy;
9345 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9346
9347 trace_cfg80211_send_unprot_deauth(dev);
9348 nl80211_send_mlme_event(rdev, dev, buf, len,
9349 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9350 }
9351 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9352
9353 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9354 size_t len)
9355 {
9356 struct wireless_dev *wdev = dev->ieee80211_ptr;
9357 struct wiphy *wiphy = wdev->wiphy;
9358 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9359
9360 trace_cfg80211_send_unprot_disassoc(dev);
9361 nl80211_send_mlme_event(rdev, dev, buf, len,
9362 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9363 }
9364 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9365
9366 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9367 struct net_device *netdev, int cmd,
9368 const u8 *addr, gfp_t gfp)
9369 {
9370 struct sk_buff *msg;
9371 void *hdr;
9372
9373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9374 if (!msg)
9375 return;
9376
9377 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9378 if (!hdr) {
9379 nlmsg_free(msg);
9380 return;
9381 }
9382
9383 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9384 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9385 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9386 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9387 goto nla_put_failure;
9388
9389 genlmsg_end(msg, hdr);
9390
9391 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9392 nl80211_mlme_mcgrp.id, gfp);
9393 return;
9394
9395 nla_put_failure:
9396 genlmsg_cancel(msg, hdr);
9397 nlmsg_free(msg);
9398 }
9399
9400 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9401 struct net_device *netdev, const u8 *addr,
9402 gfp_t gfp)
9403 {
9404 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9405 addr, gfp);
9406 }
9407
9408 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9409 struct net_device *netdev, const u8 *addr,
9410 gfp_t gfp)
9411 {
9412 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9413 addr, gfp);
9414 }
9415
9416 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9417 struct net_device *netdev, const u8 *bssid,
9418 const u8 *req_ie, size_t req_ie_len,
9419 const u8 *resp_ie, size_t resp_ie_len,
9420 u16 status, gfp_t gfp)
9421 {
9422 struct sk_buff *msg;
9423 void *hdr;
9424
9425 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9426 if (!msg)
9427 return;
9428
9429 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9430 if (!hdr) {
9431 nlmsg_free(msg);
9432 return;
9433 }
9434
9435 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9436 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9437 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9438 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9439 (req_ie &&
9440 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9441 (resp_ie &&
9442 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9443 goto nla_put_failure;
9444
9445 genlmsg_end(msg, hdr);
9446
9447 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9448 nl80211_mlme_mcgrp.id, gfp);
9449 return;
9450
9451 nla_put_failure:
9452 genlmsg_cancel(msg, hdr);
9453 nlmsg_free(msg);
9454
9455 }
9456
9457 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9458 struct net_device *netdev, const u8 *bssid,
9459 const u8 *req_ie, size_t req_ie_len,
9460 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9461 {
9462 struct sk_buff *msg;
9463 void *hdr;
9464
9465 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9466 if (!msg)
9467 return;
9468
9469 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9470 if (!hdr) {
9471 nlmsg_free(msg);
9472 return;
9473 }
9474
9475 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9476 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9477 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9478 (req_ie &&
9479 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9480 (resp_ie &&
9481 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9482 goto nla_put_failure;
9483
9484 genlmsg_end(msg, hdr);
9485
9486 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9487 nl80211_mlme_mcgrp.id, gfp);
9488 return;
9489
9490 nla_put_failure:
9491 genlmsg_cancel(msg, hdr);
9492 nlmsg_free(msg);
9493
9494 }
9495
9496 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9497 struct net_device *netdev, u16 reason,
9498 const u8 *ie, size_t ie_len, bool from_ap)
9499 {
9500 struct sk_buff *msg;
9501 void *hdr;
9502
9503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9504 if (!msg)
9505 return;
9506
9507 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9508 if (!hdr) {
9509 nlmsg_free(msg);
9510 return;
9511 }
9512
9513 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9514 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9515 (from_ap && reason &&
9516 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9517 (from_ap &&
9518 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9519 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9520 goto nla_put_failure;
9521
9522 genlmsg_end(msg, hdr);
9523
9524 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9525 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9526 return;
9527
9528 nla_put_failure:
9529 genlmsg_cancel(msg, hdr);
9530 nlmsg_free(msg);
9531
9532 }
9533
9534 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9535 struct net_device *netdev, const u8 *bssid,
9536 gfp_t gfp)
9537 {
9538 struct sk_buff *msg;
9539 void *hdr;
9540
9541 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9542 if (!msg)
9543 return;
9544
9545 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9546 if (!hdr) {
9547 nlmsg_free(msg);
9548 return;
9549 }
9550
9551 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9552 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9554 goto nla_put_failure;
9555
9556 genlmsg_end(msg, hdr);
9557
9558 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9559 nl80211_mlme_mcgrp.id, gfp);
9560 return;
9561
9562 nla_put_failure:
9563 genlmsg_cancel(msg, hdr);
9564 nlmsg_free(msg);
9565 }
9566
9567 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9568 const u8* ie, u8 ie_len, gfp_t gfp)
9569 {
9570 struct wireless_dev *wdev = dev->ieee80211_ptr;
9571 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9572 struct sk_buff *msg;
9573 void *hdr;
9574
9575 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9576 return;
9577
9578 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9579
9580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9581 if (!msg)
9582 return;
9583
9584 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9585 if (!hdr) {
9586 nlmsg_free(msg);
9587 return;
9588 }
9589
9590 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9591 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9592 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9593 (ie_len && ie &&
9594 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9595 goto nla_put_failure;
9596
9597 genlmsg_end(msg, hdr);
9598
9599 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9600 nl80211_mlme_mcgrp.id, gfp);
9601 return;
9602
9603 nla_put_failure:
9604 genlmsg_cancel(msg, hdr);
9605 nlmsg_free(msg);
9606 }
9607 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9608
9609 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9610 struct net_device *netdev, const u8 *addr,
9611 enum nl80211_key_type key_type, int key_id,
9612 const u8 *tsc, gfp_t gfp)
9613 {
9614 struct sk_buff *msg;
9615 void *hdr;
9616
9617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9618 if (!msg)
9619 return;
9620
9621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9622 if (!hdr) {
9623 nlmsg_free(msg);
9624 return;
9625 }
9626
9627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9628 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9629 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9630 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9631 (key_id != -1 &&
9632 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9633 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9634 goto nla_put_failure;
9635
9636 genlmsg_end(msg, hdr);
9637
9638 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9639 nl80211_mlme_mcgrp.id, gfp);
9640 return;
9641
9642 nla_put_failure:
9643 genlmsg_cancel(msg, hdr);
9644 nlmsg_free(msg);
9645 }
9646
9647 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9648 struct ieee80211_channel *channel_before,
9649 struct ieee80211_channel *channel_after)
9650 {
9651 struct sk_buff *msg;
9652 void *hdr;
9653 struct nlattr *nl_freq;
9654
9655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9656 if (!msg)
9657 return;
9658
9659 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9660 if (!hdr) {
9661 nlmsg_free(msg);
9662 return;
9663 }
9664
9665 /*
9666 * Since we are applying the beacon hint to a wiphy we know its
9667 * wiphy_idx is valid
9668 */
9669 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9670 goto nla_put_failure;
9671
9672 /* Before */
9673 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9674 if (!nl_freq)
9675 goto nla_put_failure;
9676 if (nl80211_msg_put_channel(msg, channel_before, false))
9677 goto nla_put_failure;
9678 nla_nest_end(msg, nl_freq);
9679
9680 /* After */
9681 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9682 if (!nl_freq)
9683 goto nla_put_failure;
9684 if (nl80211_msg_put_channel(msg, channel_after, false))
9685 goto nla_put_failure;
9686 nla_nest_end(msg, nl_freq);
9687
9688 genlmsg_end(msg, hdr);
9689
9690 rcu_read_lock();
9691 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9692 GFP_ATOMIC);
9693 rcu_read_unlock();
9694
9695 return;
9696
9697 nla_put_failure:
9698 genlmsg_cancel(msg, hdr);
9699 nlmsg_free(msg);
9700 }
9701
9702 static void nl80211_send_remain_on_chan_event(
9703 int cmd, struct cfg80211_registered_device *rdev,
9704 struct wireless_dev *wdev, u64 cookie,
9705 struct ieee80211_channel *chan,
9706 unsigned int duration, gfp_t gfp)
9707 {
9708 struct sk_buff *msg;
9709 void *hdr;
9710
9711 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9712 if (!msg)
9713 return;
9714
9715 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9716 if (!hdr) {
9717 nlmsg_free(msg);
9718 return;
9719 }
9720
9721 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9722 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9723 wdev->netdev->ifindex)) ||
9724 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9725 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9726 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9727 NL80211_CHAN_NO_HT) ||
9728 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9729 goto nla_put_failure;
9730
9731 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9732 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9733 goto nla_put_failure;
9734
9735 genlmsg_end(msg, hdr);
9736
9737 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9738 nl80211_mlme_mcgrp.id, gfp);
9739 return;
9740
9741 nla_put_failure:
9742 genlmsg_cancel(msg, hdr);
9743 nlmsg_free(msg);
9744 }
9745
9746 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9747 struct ieee80211_channel *chan,
9748 unsigned int duration, gfp_t gfp)
9749 {
9750 struct wiphy *wiphy = wdev->wiphy;
9751 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9752
9753 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9754 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9755 rdev, wdev, cookie, chan,
9756 duration, gfp);
9757 }
9758 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9759
9760 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9761 struct ieee80211_channel *chan,
9762 gfp_t gfp)
9763 {
9764 struct wiphy *wiphy = wdev->wiphy;
9765 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9766
9767 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9768 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9769 rdev, wdev, cookie, chan, 0, gfp);
9770 }
9771 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9772
9773 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9774 struct station_info *sinfo, gfp_t gfp)
9775 {
9776 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9777 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9778 struct sk_buff *msg;
9779
9780 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9781
9782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9783 if (!msg)
9784 return;
9785
9786 if (nl80211_send_station(msg, 0, 0, 0,
9787 rdev, dev, mac_addr, sinfo) < 0) {
9788 nlmsg_free(msg);
9789 return;
9790 }
9791
9792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9793 nl80211_mlme_mcgrp.id, gfp);
9794 }
9795 EXPORT_SYMBOL(cfg80211_new_sta);
9796
9797 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9798 {
9799 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9800 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9801 struct sk_buff *msg;
9802 void *hdr;
9803
9804 trace_cfg80211_del_sta(dev, mac_addr);
9805
9806 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9807 if (!msg)
9808 return;
9809
9810 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9811 if (!hdr) {
9812 nlmsg_free(msg);
9813 return;
9814 }
9815
9816 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9817 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9818 goto nla_put_failure;
9819
9820 genlmsg_end(msg, hdr);
9821
9822 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9823 nl80211_mlme_mcgrp.id, gfp);
9824 return;
9825
9826 nla_put_failure:
9827 genlmsg_cancel(msg, hdr);
9828 nlmsg_free(msg);
9829 }
9830 EXPORT_SYMBOL(cfg80211_del_sta);
9831
9832 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9833 enum nl80211_connect_failed_reason reason,
9834 gfp_t gfp)
9835 {
9836 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9837 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9838 struct sk_buff *msg;
9839 void *hdr;
9840
9841 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9842 if (!msg)
9843 return;
9844
9845 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9846 if (!hdr) {
9847 nlmsg_free(msg);
9848 return;
9849 }
9850
9851 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9852 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9853 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9854 goto nla_put_failure;
9855
9856 genlmsg_end(msg, hdr);
9857
9858 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9859 nl80211_mlme_mcgrp.id, gfp);
9860 return;
9861
9862 nla_put_failure:
9863 genlmsg_cancel(msg, hdr);
9864 nlmsg_free(msg);
9865 }
9866 EXPORT_SYMBOL(cfg80211_conn_failed);
9867
9868 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9869 const u8 *addr, gfp_t gfp)
9870 {
9871 struct wireless_dev *wdev = dev->ieee80211_ptr;
9872 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9873 struct sk_buff *msg;
9874 void *hdr;
9875 int err;
9876 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9877
9878 if (!nlportid)
9879 return false;
9880
9881 msg = nlmsg_new(100, gfp);
9882 if (!msg)
9883 return true;
9884
9885 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9886 if (!hdr) {
9887 nlmsg_free(msg);
9888 return true;
9889 }
9890
9891 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9892 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9893 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9894 goto nla_put_failure;
9895
9896 err = genlmsg_end(msg, hdr);
9897 if (err < 0) {
9898 nlmsg_free(msg);
9899 return true;
9900 }
9901
9902 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9903 return true;
9904
9905 nla_put_failure:
9906 genlmsg_cancel(msg, hdr);
9907 nlmsg_free(msg);
9908 return true;
9909 }
9910
9911 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9912 const u8 *addr, gfp_t gfp)
9913 {
9914 struct wireless_dev *wdev = dev->ieee80211_ptr;
9915 bool ret;
9916
9917 trace_cfg80211_rx_spurious_frame(dev, addr);
9918
9919 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9920 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9921 trace_cfg80211_return_bool(false);
9922 return false;
9923 }
9924 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9925 addr, gfp);
9926 trace_cfg80211_return_bool(ret);
9927 return ret;
9928 }
9929 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9930
9931 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9932 const u8 *addr, gfp_t gfp)
9933 {
9934 struct wireless_dev *wdev = dev->ieee80211_ptr;
9935 bool ret;
9936
9937 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9938
9939 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9940 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9941 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9942 trace_cfg80211_return_bool(false);
9943 return false;
9944 }
9945 ret = __nl80211_unexpected_frame(dev,
9946 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9947 addr, gfp);
9948 trace_cfg80211_return_bool(ret);
9949 return ret;
9950 }
9951 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9952
9953 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9954 struct wireless_dev *wdev, u32 nlportid,
9955 int freq, int sig_dbm,
9956 const u8 *buf, size_t len, gfp_t gfp)
9957 {
9958 struct net_device *netdev = wdev->netdev;
9959 struct sk_buff *msg;
9960 void *hdr;
9961
9962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9963 if (!msg)
9964 return -ENOMEM;
9965
9966 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9967 if (!hdr) {
9968 nlmsg_free(msg);
9969 return -ENOMEM;
9970 }
9971
9972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9973 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9974 netdev->ifindex)) ||
9975 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9976 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
9977 (sig_dbm &&
9978 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9979 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9980 goto nla_put_failure;
9981
9982 genlmsg_end(msg, hdr);
9983
9984 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9985
9986 nla_put_failure:
9987 genlmsg_cancel(msg, hdr);
9988 nlmsg_free(msg);
9989 return -ENOBUFS;
9990 }
9991
9992 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
9993 const u8 *buf, size_t len, bool ack, gfp_t gfp)
9994 {
9995 struct wiphy *wiphy = wdev->wiphy;
9996 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9997 struct net_device *netdev = wdev->netdev;
9998 struct sk_buff *msg;
9999 void *hdr;
10000
10001 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10002
10003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10004 if (!msg)
10005 return;
10006
10007 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10008 if (!hdr) {
10009 nlmsg_free(msg);
10010 return;
10011 }
10012
10013 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10014 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10015 netdev->ifindex)) ||
10016 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10017 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10018 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10019 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10020 goto nla_put_failure;
10021
10022 genlmsg_end(msg, hdr);
10023
10024 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10025 return;
10026
10027 nla_put_failure:
10028 genlmsg_cancel(msg, hdr);
10029 nlmsg_free(msg);
10030 }
10031 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10032
10033 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10034 enum nl80211_cqm_rssi_threshold_event rssi_event,
10035 gfp_t gfp)
10036 {
10037 struct wireless_dev *wdev = dev->ieee80211_ptr;
10038 struct wiphy *wiphy = wdev->wiphy;
10039 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10040 struct sk_buff *msg;
10041 struct nlattr *pinfoattr;
10042 void *hdr;
10043
10044 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10045
10046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10047 if (!msg)
10048 return;
10049
10050 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10051 if (!hdr) {
10052 nlmsg_free(msg);
10053 return;
10054 }
10055
10056 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10057 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10058 goto nla_put_failure;
10059
10060 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10061 if (!pinfoattr)
10062 goto nla_put_failure;
10063
10064 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10065 rssi_event))
10066 goto nla_put_failure;
10067
10068 nla_nest_end(msg, pinfoattr);
10069
10070 genlmsg_end(msg, hdr);
10071
10072 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10073 nl80211_mlme_mcgrp.id, gfp);
10074 return;
10075
10076 nla_put_failure:
10077 genlmsg_cancel(msg, hdr);
10078 nlmsg_free(msg);
10079 }
10080 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10081
10082 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10083 struct net_device *netdev, const u8 *bssid,
10084 const u8 *replay_ctr, gfp_t gfp)
10085 {
10086 struct sk_buff *msg;
10087 struct nlattr *rekey_attr;
10088 void *hdr;
10089
10090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10091 if (!msg)
10092 return;
10093
10094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10095 if (!hdr) {
10096 nlmsg_free(msg);
10097 return;
10098 }
10099
10100 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10101 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10102 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10103 goto nla_put_failure;
10104
10105 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10106 if (!rekey_attr)
10107 goto nla_put_failure;
10108
10109 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10110 NL80211_REPLAY_CTR_LEN, replay_ctr))
10111 goto nla_put_failure;
10112
10113 nla_nest_end(msg, rekey_attr);
10114
10115 genlmsg_end(msg, hdr);
10116
10117 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10118 nl80211_mlme_mcgrp.id, gfp);
10119 return;
10120
10121 nla_put_failure:
10122 genlmsg_cancel(msg, hdr);
10123 nlmsg_free(msg);
10124 }
10125
10126 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10127 const u8 *replay_ctr, gfp_t gfp)
10128 {
10129 struct wireless_dev *wdev = dev->ieee80211_ptr;
10130 struct wiphy *wiphy = wdev->wiphy;
10131 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10132
10133 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10134 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10135 }
10136 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10137
10138 static void
10139 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10140 struct net_device *netdev, int index,
10141 const u8 *bssid, bool preauth, gfp_t gfp)
10142 {
10143 struct sk_buff *msg;
10144 struct nlattr *attr;
10145 void *hdr;
10146
10147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10148 if (!msg)
10149 return;
10150
10151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10152 if (!hdr) {
10153 nlmsg_free(msg);
10154 return;
10155 }
10156
10157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10158 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10159 goto nla_put_failure;
10160
10161 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10162 if (!attr)
10163 goto nla_put_failure;
10164
10165 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10166 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10167 (preauth &&
10168 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10169 goto nla_put_failure;
10170
10171 nla_nest_end(msg, attr);
10172
10173 genlmsg_end(msg, hdr);
10174
10175 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10176 nl80211_mlme_mcgrp.id, gfp);
10177 return;
10178
10179 nla_put_failure:
10180 genlmsg_cancel(msg, hdr);
10181 nlmsg_free(msg);
10182 }
10183
10184 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10185 const u8 *bssid, bool preauth, gfp_t gfp)
10186 {
10187 struct wireless_dev *wdev = dev->ieee80211_ptr;
10188 struct wiphy *wiphy = wdev->wiphy;
10189 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10190
10191 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10192 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10193 }
10194 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10195
10196 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10197 struct net_device *netdev,
10198 struct cfg80211_chan_def *chandef,
10199 gfp_t gfp)
10200 {
10201 struct sk_buff *msg;
10202 void *hdr;
10203
10204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10205 if (!msg)
10206 return;
10207
10208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10209 if (!hdr) {
10210 nlmsg_free(msg);
10211 return;
10212 }
10213
10214 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10215 goto nla_put_failure;
10216
10217 if (nl80211_send_chandef(msg, chandef))
10218 goto nla_put_failure;
10219
10220 genlmsg_end(msg, hdr);
10221
10222 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10223 nl80211_mlme_mcgrp.id, gfp);
10224 return;
10225
10226 nla_put_failure:
10227 genlmsg_cancel(msg, hdr);
10228 nlmsg_free(msg);
10229 }
10230
10231 void cfg80211_ch_switch_notify(struct net_device *dev,
10232 struct cfg80211_chan_def *chandef)
10233 {
10234 struct wireless_dev *wdev = dev->ieee80211_ptr;
10235 struct wiphy *wiphy = wdev->wiphy;
10236 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10237
10238 trace_cfg80211_ch_switch_notify(dev, chandef);
10239
10240 wdev_lock(wdev);
10241
10242 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10243 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10244 goto out;
10245
10246 wdev->channel = chandef->chan;
10247 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10248 out:
10249 wdev_unlock(wdev);
10250 return;
10251 }
10252 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10253
10254 void cfg80211_cqm_txe_notify(struct net_device *dev,
10255 const u8 *peer, u32 num_packets,
10256 u32 rate, u32 intvl, gfp_t gfp)
10257 {
10258 struct wireless_dev *wdev = dev->ieee80211_ptr;
10259 struct wiphy *wiphy = wdev->wiphy;
10260 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10261 struct sk_buff *msg;
10262 struct nlattr *pinfoattr;
10263 void *hdr;
10264
10265 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10266 if (!msg)
10267 return;
10268
10269 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10270 if (!hdr) {
10271 nlmsg_free(msg);
10272 return;
10273 }
10274
10275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10276 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10277 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10278 goto nla_put_failure;
10279
10280 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10281 if (!pinfoattr)
10282 goto nla_put_failure;
10283
10284 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10285 goto nla_put_failure;
10286
10287 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10288 goto nla_put_failure;
10289
10290 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10291 goto nla_put_failure;
10292
10293 nla_nest_end(msg, pinfoattr);
10294
10295 genlmsg_end(msg, hdr);
10296
10297 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10298 nl80211_mlme_mcgrp.id, gfp);
10299 return;
10300
10301 nla_put_failure:
10302 genlmsg_cancel(msg, hdr);
10303 nlmsg_free(msg);
10304 }
10305 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10306
10307 void
10308 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10309 struct cfg80211_chan_def *chandef,
10310 enum nl80211_radar_event event,
10311 struct net_device *netdev, gfp_t gfp)
10312 {
10313 struct sk_buff *msg;
10314 void *hdr;
10315
10316 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10317 if (!msg)
10318 return;
10319
10320 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10321 if (!hdr) {
10322 nlmsg_free(msg);
10323 return;
10324 }
10325
10326 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10327 goto nla_put_failure;
10328
10329 /* NOP and radar events don't need a netdev parameter */
10330 if (netdev) {
10331 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10332
10333 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10334 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10335 goto nla_put_failure;
10336 }
10337
10338 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10339 goto nla_put_failure;
10340
10341 if (nl80211_send_chandef(msg, chandef))
10342 goto nla_put_failure;
10343
10344 if (genlmsg_end(msg, hdr) < 0) {
10345 nlmsg_free(msg);
10346 return;
10347 }
10348
10349 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10350 nl80211_mlme_mcgrp.id, gfp);
10351 return;
10352
10353 nla_put_failure:
10354 genlmsg_cancel(msg, hdr);
10355 nlmsg_free(msg);
10356 }
10357
10358 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10359 const u8 *peer, u32 num_packets, gfp_t gfp)
10360 {
10361 struct wireless_dev *wdev = dev->ieee80211_ptr;
10362 struct wiphy *wiphy = wdev->wiphy;
10363 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10364 struct sk_buff *msg;
10365 struct nlattr *pinfoattr;
10366 void *hdr;
10367
10368 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10369
10370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10371 if (!msg)
10372 return;
10373
10374 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10375 if (!hdr) {
10376 nlmsg_free(msg);
10377 return;
10378 }
10379
10380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10381 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10382 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10383 goto nla_put_failure;
10384
10385 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10386 if (!pinfoattr)
10387 goto nla_put_failure;
10388
10389 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10390 goto nla_put_failure;
10391
10392 nla_nest_end(msg, pinfoattr);
10393
10394 genlmsg_end(msg, hdr);
10395
10396 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10397 nl80211_mlme_mcgrp.id, gfp);
10398 return;
10399
10400 nla_put_failure:
10401 genlmsg_cancel(msg, hdr);
10402 nlmsg_free(msg);
10403 }
10404 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10405
10406 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10407 u64 cookie, bool acked, gfp_t gfp)
10408 {
10409 struct wireless_dev *wdev = dev->ieee80211_ptr;
10410 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10411 struct sk_buff *msg;
10412 void *hdr;
10413 int err;
10414
10415 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10416
10417 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10418
10419 if (!msg)
10420 return;
10421
10422 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10423 if (!hdr) {
10424 nlmsg_free(msg);
10425 return;
10426 }
10427
10428 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10429 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10430 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10431 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10432 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10433 goto nla_put_failure;
10434
10435 err = genlmsg_end(msg, hdr);
10436 if (err < 0) {
10437 nlmsg_free(msg);
10438 return;
10439 }
10440
10441 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10442 nl80211_mlme_mcgrp.id, gfp);
10443 return;
10444
10445 nla_put_failure:
10446 genlmsg_cancel(msg, hdr);
10447 nlmsg_free(msg);
10448 }
10449 EXPORT_SYMBOL(cfg80211_probe_status);
10450
10451 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10452 const u8 *frame, size_t len,
10453 int freq, int sig_dbm)
10454 {
10455 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10456 struct sk_buff *msg;
10457 void *hdr;
10458 struct cfg80211_beacon_registration *reg;
10459
10460 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10461
10462 spin_lock_bh(&rdev->beacon_registrations_lock);
10463 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10464 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10465 if (!msg) {
10466 spin_unlock_bh(&rdev->beacon_registrations_lock);
10467 return;
10468 }
10469
10470 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10471 if (!hdr)
10472 goto nla_put_failure;
10473
10474 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10475 (freq &&
10476 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10477 (sig_dbm &&
10478 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10479 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10480 goto nla_put_failure;
10481
10482 genlmsg_end(msg, hdr);
10483
10484 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10485 }
10486 spin_unlock_bh(&rdev->beacon_registrations_lock);
10487 return;
10488
10489 nla_put_failure:
10490 spin_unlock_bh(&rdev->beacon_registrations_lock);
10491 if (hdr)
10492 genlmsg_cancel(msg, hdr);
10493 nlmsg_free(msg);
10494 }
10495 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10496
10497 #ifdef CONFIG_PM
10498 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10499 struct cfg80211_wowlan_wakeup *wakeup,
10500 gfp_t gfp)
10501 {
10502 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10503 struct sk_buff *msg;
10504 void *hdr;
10505 int err, size = 200;
10506
10507 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10508
10509 if (wakeup)
10510 size += wakeup->packet_present_len;
10511
10512 msg = nlmsg_new(size, gfp);
10513 if (!msg)
10514 return;
10515
10516 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10517 if (!hdr)
10518 goto free_msg;
10519
10520 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10521 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10522 goto free_msg;
10523
10524 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10525 wdev->netdev->ifindex))
10526 goto free_msg;
10527
10528 if (wakeup) {
10529 struct nlattr *reasons;
10530
10531 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10532
10533 if (wakeup->disconnect &&
10534 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10535 goto free_msg;
10536 if (wakeup->magic_pkt &&
10537 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10538 goto free_msg;
10539 if (wakeup->gtk_rekey_failure &&
10540 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10541 goto free_msg;
10542 if (wakeup->eap_identity_req &&
10543 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10544 goto free_msg;
10545 if (wakeup->four_way_handshake &&
10546 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10547 goto free_msg;
10548 if (wakeup->rfkill_release &&
10549 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10550 goto free_msg;
10551
10552 if (wakeup->pattern_idx >= 0 &&
10553 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10554 wakeup->pattern_idx))
10555 goto free_msg;
10556
10557 if (wakeup->tcp_match)
10558 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10559
10560 if (wakeup->tcp_connlost)
10561 nla_put_flag(msg,
10562 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10563
10564 if (wakeup->tcp_nomoretokens)
10565 nla_put_flag(msg,
10566 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10567
10568 if (wakeup->packet) {
10569 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10570 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10571
10572 if (!wakeup->packet_80211) {
10573 pkt_attr =
10574 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10575 len_attr =
10576 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10577 }
10578
10579 if (wakeup->packet_len &&
10580 nla_put_u32(msg, len_attr, wakeup->packet_len))
10581 goto free_msg;
10582
10583 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10584 wakeup->packet))
10585 goto free_msg;
10586 }
10587
10588 nla_nest_end(msg, reasons);
10589 }
10590
10591 err = genlmsg_end(msg, hdr);
10592 if (err < 0)
10593 goto free_msg;
10594
10595 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10596 nl80211_mlme_mcgrp.id, gfp);
10597 return;
10598
10599 free_msg:
10600 nlmsg_free(msg);
10601 }
10602 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10603 #endif
10604
10605 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10606 enum nl80211_tdls_operation oper,
10607 u16 reason_code, gfp_t gfp)
10608 {
10609 struct wireless_dev *wdev = dev->ieee80211_ptr;
10610 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10611 struct sk_buff *msg;
10612 void *hdr;
10613 int err;
10614
10615 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10616 reason_code);
10617
10618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10619 if (!msg)
10620 return;
10621
10622 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10623 if (!hdr) {
10624 nlmsg_free(msg);
10625 return;
10626 }
10627
10628 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10629 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10630 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10631 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10632 (reason_code > 0 &&
10633 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10634 goto nla_put_failure;
10635
10636 err = genlmsg_end(msg, hdr);
10637 if (err < 0) {
10638 nlmsg_free(msg);
10639 return;
10640 }
10641
10642 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10643 nl80211_mlme_mcgrp.id, gfp);
10644 return;
10645
10646 nla_put_failure:
10647 genlmsg_cancel(msg, hdr);
10648 nlmsg_free(msg);
10649 }
10650 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10651
10652 static int nl80211_netlink_notify(struct notifier_block * nb,
10653 unsigned long state,
10654 void *_notify)
10655 {
10656 struct netlink_notify *notify = _notify;
10657 struct cfg80211_registered_device *rdev;
10658 struct wireless_dev *wdev;
10659 struct cfg80211_beacon_registration *reg, *tmp;
10660
10661 if (state != NETLINK_URELEASE)
10662 return NOTIFY_DONE;
10663
10664 rcu_read_lock();
10665
10666 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10667 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10668 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10669
10670 spin_lock_bh(&rdev->beacon_registrations_lock);
10671 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10672 list) {
10673 if (reg->nlportid == notify->portid) {
10674 list_del(&reg->list);
10675 kfree(reg);
10676 break;
10677 }
10678 }
10679 spin_unlock_bh(&rdev->beacon_registrations_lock);
10680 }
10681
10682 rcu_read_unlock();
10683
10684 return NOTIFY_DONE;
10685 }
10686
10687 static struct notifier_block nl80211_netlink_notifier = {
10688 .notifier_call = nl80211_netlink_notify,
10689 };
10690
10691 void cfg80211_ft_event(struct net_device *netdev,
10692 struct cfg80211_ft_event_params *ft_event)
10693 {
10694 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10695 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10696 struct sk_buff *msg;
10697 void *hdr;
10698 int err;
10699
10700 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10701
10702 if (!ft_event->target_ap)
10703 return;
10704
10705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10706 if (!msg)
10707 return;
10708
10709 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10710 if (!hdr) {
10711 nlmsg_free(msg);
10712 return;
10713 }
10714
10715 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10716 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10718 if (ft_event->ies)
10719 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10720 if (ft_event->ric_ies)
10721 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10722 ft_event->ric_ies);
10723
10724 err = genlmsg_end(msg, hdr);
10725 if (err < 0) {
10726 nlmsg_free(msg);
10727 return;
10728 }
10729
10730 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10731 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10732 }
10733 EXPORT_SYMBOL(cfg80211_ft_event);
10734
10735 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10736 {
10737 struct cfg80211_registered_device *rdev;
10738 struct sk_buff *msg;
10739 void *hdr;
10740 u32 nlportid;
10741
10742 rdev = wiphy_to_dev(wdev->wiphy);
10743 if (!rdev->crit_proto_nlportid)
10744 return;
10745
10746 nlportid = rdev->crit_proto_nlportid;
10747 rdev->crit_proto_nlportid = 0;
10748
10749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10750 if (!msg)
10751 return;
10752
10753 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10754 if (!hdr)
10755 goto nla_put_failure;
10756
10757 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10758 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10759 goto nla_put_failure;
10760
10761 genlmsg_end(msg, hdr);
10762
10763 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10764 return;
10765
10766 nla_put_failure:
10767 if (hdr)
10768 genlmsg_cancel(msg, hdr);
10769 nlmsg_free(msg);
10770
10771 }
10772 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10773
10774 /* initialisation/exit functions */
10775
10776 int nl80211_init(void)
10777 {
10778 int err;
10779
10780 err = genl_register_family_with_ops(&nl80211_fam,
10781 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10782 if (err)
10783 return err;
10784
10785 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10786 if (err)
10787 goto err_out;
10788
10789 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10790 if (err)
10791 goto err_out;
10792
10793 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10794 if (err)
10795 goto err_out;
10796
10797 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10798 if (err)
10799 goto err_out;
10800
10801 #ifdef CONFIG_NL80211_TESTMODE
10802 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10803 if (err)
10804 goto err_out;
10805 #endif
10806
10807 err = netlink_register_notifier(&nl80211_netlink_notifier);
10808 if (err)
10809 goto err_out;
10810
10811 return 0;
10812 err_out:
10813 genl_unregister_family(&nl80211_fam);
10814 return err;
10815 }
10816
10817 void nl80211_exit(void)
10818 {
10819 netlink_unregister_notifier(&nl80211_netlink_notifier);
10820 genl_unregister_family(&nl80211_fam);
10821 }
Linus' kernel tree