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Merge tag 'v3.10.67' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / nl80211.c
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 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
382 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
383 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
387 };
388
389 /* policy for the key attributes */
390 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
391 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
392 [NL80211_KEY_IDX] = { .type = NLA_U8 },
393 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
394 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
395 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
396 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
397 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
398 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
399 };
400
401 /* policy for the key default flags */
402 static const struct nla_policy
403 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
404 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
405 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
406 };
407
408 /* policy for WoWLAN attributes */
409 static const struct nla_policy
410 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
411 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
412 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
413 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
414 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
415 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
418 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
419 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
420 };
421
422 static const struct nla_policy
423 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
424 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
425 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
426 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
427 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
428 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
429 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
430 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
431 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
432 },
433 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
434 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
435 },
436 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
438 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
439 };
440
441 /* policy for GTK rekey offload attributes */
442 static const struct nla_policy
443 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
444 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
445 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
446 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
447 };
448
449 static const struct nla_policy
450 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
451 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
452 .len = IEEE80211_MAX_SSID_LEN },
453 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
454 };
455
456 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
457 struct netlink_callback *cb,
458 struct cfg80211_registered_device **rdev,
459 struct wireless_dev **wdev)
460 {
461 int err;
462
463 rtnl_lock();
464 mutex_lock(&cfg80211_mutex);
465
466 if (!cb->args[0]) {
467 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
468 nl80211_fam.attrbuf, nl80211_fam.maxattr,
469 nl80211_policy);
470 if (err)
471 goto out_unlock;
472
473 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
474 nl80211_fam.attrbuf);
475 if (IS_ERR(*wdev)) {
476 err = PTR_ERR(*wdev);
477 goto out_unlock;
478 }
479 *rdev = wiphy_to_dev((*wdev)->wiphy);
480 /* 0 is the first index - add 1 to parse only once */
481 cb->args[0] = (*rdev)->wiphy_idx + 1;
482 cb->args[1] = (*wdev)->identifier;
483 } else {
484 /* subtract the 1 again here */
485 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
486 struct wireless_dev *tmp;
487
488 if (!wiphy) {
489 err = -ENODEV;
490 goto out_unlock;
491 }
492 *rdev = wiphy_to_dev(wiphy);
493 *wdev = NULL;
494
495 mutex_lock(&(*rdev)->devlist_mtx);
496 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
497 if (tmp->identifier == cb->args[1]) {
498 *wdev = tmp;
499 break;
500 }
501 }
502 mutex_unlock(&(*rdev)->devlist_mtx);
503
504 if (!*wdev) {
505 err = -ENODEV;
506 goto out_unlock;
507 }
508 }
509
510 cfg80211_lock_rdev(*rdev);
511
512 mutex_unlock(&cfg80211_mutex);
513 return 0;
514 out_unlock:
515 mutex_unlock(&cfg80211_mutex);
516 rtnl_unlock();
517 return err;
518 }
519
520 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
521 {
522 cfg80211_unlock_rdev(rdev);
523 rtnl_unlock();
524 }
525
526 /* IE validation */
527 static bool is_valid_ie_attr(const struct nlattr *attr)
528 {
529 const u8 *pos;
530 int len;
531
532 if (!attr)
533 return true;
534
535 pos = nla_data(attr);
536 len = nla_len(attr);
537
538 while (len) {
539 u8 elemlen;
540
541 if (len < 2)
542 return false;
543 len -= 2;
544
545 elemlen = pos[1];
546 if (elemlen > len)
547 return false;
548
549 len -= elemlen;
550 pos += 2 + elemlen;
551 }
552
553 return true;
554 }
555
556 /* message building helper */
557 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
558 int flags, u8 cmd)
559 {
560 /* since there is no private header just add the generic one */
561 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
562 }
563
564 static int nl80211_msg_put_channel(struct sk_buff *msg,
565 struct ieee80211_channel *chan,
566 bool large)
567 {
568 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
569 chan->center_freq))
570 goto nla_put_failure;
571
572 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
574 goto nla_put_failure;
575 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
577 goto nla_put_failure;
578 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
580 goto nla_put_failure;
581 if (chan->flags & IEEE80211_CHAN_RADAR) {
582 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
583 goto nla_put_failure;
584 if (large) {
585 u32 time;
586
587 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
588
589 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
590 chan->dfs_state))
591 goto nla_put_failure;
592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
593 time))
594 goto nla_put_failure;
595 }
596 }
597
598 if (large) {
599 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
600 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
601 goto nla_put_failure;
602 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
603 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
604 goto nla_put_failure;
605 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
606 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
607 goto nla_put_failure;
608 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
609 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
610 goto nla_put_failure;
611 }
612
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
614 DBM_TO_MBM(chan->max_power)))
615 goto nla_put_failure;
616
617 return 0;
618
619 nla_put_failure:
620 return -ENOBUFS;
621 }
622
623 /* netlink command implementations */
624
625 struct key_parse {
626 struct key_params p;
627 int idx;
628 int type;
629 bool def, defmgmt;
630 bool def_uni, def_multi;
631 };
632
633 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
634 {
635 struct nlattr *tb[NL80211_KEY_MAX + 1];
636 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
637 nl80211_key_policy);
638 if (err)
639 return err;
640
641 k->def = !!tb[NL80211_KEY_DEFAULT];
642 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
643
644 if (k->def) {
645 k->def_uni = true;
646 k->def_multi = true;
647 }
648 if (k->defmgmt)
649 k->def_multi = true;
650
651 if (tb[NL80211_KEY_IDX])
652 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
653
654 if (tb[NL80211_KEY_DATA]) {
655 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
656 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
657 }
658
659 if (tb[NL80211_KEY_SEQ]) {
660 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
661 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
662 }
663
664 if (tb[NL80211_KEY_CIPHER])
665 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
666
667 if (tb[NL80211_KEY_TYPE]) {
668 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
669 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
670 return -EINVAL;
671 }
672
673 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
674 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
675 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
676 tb[NL80211_KEY_DEFAULT_TYPES],
677 nl80211_key_default_policy);
678 if (err)
679 return err;
680
681 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
682 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
683 }
684
685 return 0;
686 }
687
688 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
689 {
690 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
691 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
692 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
693 }
694
695 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
696 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
697 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
698 }
699
700 if (info->attrs[NL80211_ATTR_KEY_IDX])
701 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
702
703 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
704 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
705
706 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
707 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
708
709 if (k->def) {
710 k->def_uni = true;
711 k->def_multi = true;
712 }
713 if (k->defmgmt)
714 k->def_multi = true;
715
716 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
717 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
718 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
719 return -EINVAL;
720 }
721
722 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
723 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
724 int err = nla_parse_nested(
725 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
726 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
727 nl80211_key_default_policy);
728 if (err)
729 return err;
730
731 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
732 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
733 }
734
735 return 0;
736 }
737
738 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
739 {
740 int err;
741
742 memset(k, 0, sizeof(*k));
743 k->idx = -1;
744 k->type = -1;
745
746 if (info->attrs[NL80211_ATTR_KEY])
747 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
748 else
749 err = nl80211_parse_key_old(info, k);
750
751 if (err)
752 return err;
753
754 if (k->def && k->defmgmt)
755 return -EINVAL;
756
757 if (k->defmgmt) {
758 if (k->def_uni || !k->def_multi)
759 return -EINVAL;
760 }
761
762 if (k->idx != -1) {
763 if (k->defmgmt) {
764 if (k->idx < 4 || k->idx > 5)
765 return -EINVAL;
766 } else if (k->def) {
767 if (k->idx < 0 || k->idx > 3)
768 return -EINVAL;
769 } else {
770 if (k->idx < 0 || k->idx > 5)
771 return -EINVAL;
772 }
773 }
774
775 return 0;
776 }
777
778 static struct cfg80211_cached_keys *
779 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
780 struct nlattr *keys, bool *no_ht)
781 {
782 struct key_parse parse;
783 struct nlattr *key;
784 struct cfg80211_cached_keys *result;
785 int rem, err, def = 0;
786
787 result = kzalloc(sizeof(*result), GFP_KERNEL);
788 if (!result)
789 return ERR_PTR(-ENOMEM);
790
791 result->def = -1;
792 result->defmgmt = -1;
793
794 nla_for_each_nested(key, keys, rem) {
795 memset(&parse, 0, sizeof(parse));
796 parse.idx = -1;
797
798 err = nl80211_parse_key_new(key, &parse);
799 if (err)
800 goto error;
801 err = -EINVAL;
802 if (!parse.p.key)
803 goto error;
804 if (parse.idx < 0 || parse.idx > 4)
805 goto error;
806 if (parse.def) {
807 if (def)
808 goto error;
809 def = 1;
810 result->def = parse.idx;
811 if (!parse.def_uni || !parse.def_multi)
812 goto error;
813 } else if (parse.defmgmt)
814 goto error;
815 err = cfg80211_validate_key_settings(rdev, &parse.p,
816 parse.idx, false, NULL);
817 if (err)
818 goto error;
819 result->params[parse.idx].cipher = parse.p.cipher;
820 result->params[parse.idx].key_len = parse.p.key_len;
821 result->params[parse.idx].key = result->data[parse.idx];
822 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
823
824 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
825 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
826 if (no_ht)
827 *no_ht = true;
828 }
829 }
830
831 return result;
832 error:
833 kfree(result);
834 return ERR_PTR(err);
835 }
836
837 static int nl80211_key_allowed(struct wireless_dev *wdev)
838 {
839 ASSERT_WDEV_LOCK(wdev);
840
841 switch (wdev->iftype) {
842 case NL80211_IFTYPE_AP:
843 case NL80211_IFTYPE_AP_VLAN:
844 case NL80211_IFTYPE_P2P_GO:
845 case NL80211_IFTYPE_MESH_POINT:
846 break;
847 case NL80211_IFTYPE_ADHOC:
848 if (!wdev->current_bss)
849 return -ENOLINK;
850 break;
851 case NL80211_IFTYPE_STATION:
852 case NL80211_IFTYPE_P2P_CLIENT:
853 if (wdev->sme_state != CFG80211_SME_CONNECTED)
854 return -ENOLINK;
855 break;
856 default:
857 return -EINVAL;
858 }
859
860 return 0;
861 }
862
863 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
864 {
865 struct nlattr *nl_modes = nla_nest_start(msg, attr);
866 int i;
867
868 if (!nl_modes)
869 goto nla_put_failure;
870
871 i = 0;
872 while (ifmodes) {
873 if ((ifmodes & 1) && nla_put_flag(msg, i))
874 goto nla_put_failure;
875 ifmodes >>= 1;
876 i++;
877 }
878
879 nla_nest_end(msg, nl_modes);
880 return 0;
881
882 nla_put_failure:
883 return -ENOBUFS;
884 }
885
886 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
887 struct sk_buff *msg,
888 bool large)
889 {
890 struct nlattr *nl_combis;
891 int i, j;
892
893 nl_combis = nla_nest_start(msg,
894 NL80211_ATTR_INTERFACE_COMBINATIONS);
895 if (!nl_combis)
896 goto nla_put_failure;
897
898 for (i = 0; i < wiphy->n_iface_combinations; i++) {
899 const struct ieee80211_iface_combination *c;
900 struct nlattr *nl_combi, *nl_limits;
901
902 c = &wiphy->iface_combinations[i];
903
904 nl_combi = nla_nest_start(msg, i + 1);
905 if (!nl_combi)
906 goto nla_put_failure;
907
908 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
909 if (!nl_limits)
910 goto nla_put_failure;
911
912 for (j = 0; j < c->n_limits; j++) {
913 struct nlattr *nl_limit;
914
915 nl_limit = nla_nest_start(msg, j + 1);
916 if (!nl_limit)
917 goto nla_put_failure;
918 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
919 c->limits[j].max))
920 goto nla_put_failure;
921 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
922 c->limits[j].types))
923 goto nla_put_failure;
924 nla_nest_end(msg, nl_limit);
925 }
926
927 nla_nest_end(msg, nl_limits);
928
929 if (c->beacon_int_infra_match &&
930 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
931 goto nla_put_failure;
932 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
933 c->num_different_channels) ||
934 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
935 c->max_interfaces))
936 goto nla_put_failure;
937 if (large &&
938 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
939 c->radar_detect_widths))
940 goto nla_put_failure;
941
942 nla_nest_end(msg, nl_combi);
943 }
944
945 nla_nest_end(msg, nl_combis);
946
947 return 0;
948 nla_put_failure:
949 return -ENOBUFS;
950 }
951
952 #ifdef CONFIG_PM
953 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
954 struct sk_buff *msg)
955 {
956 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
957 struct nlattr *nl_tcp;
958
959 if (!tcp)
960 return 0;
961
962 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
963 if (!nl_tcp)
964 return -ENOBUFS;
965
966 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
967 tcp->data_payload_max))
968 return -ENOBUFS;
969
970 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
971 tcp->data_payload_max))
972 return -ENOBUFS;
973
974 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
975 return -ENOBUFS;
976
977 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
978 sizeof(*tcp->tok), tcp->tok))
979 return -ENOBUFS;
980
981 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
982 tcp->data_interval_max))
983 return -ENOBUFS;
984
985 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
986 tcp->wake_payload_max))
987 return -ENOBUFS;
988
989 nla_nest_end(msg, nl_tcp);
990 return 0;
991 }
992
993 static int nl80211_send_wowlan(struct sk_buff *msg,
994 struct cfg80211_registered_device *dev,
995 bool large)
996 {
997 struct nlattr *nl_wowlan;
998
999 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
1000 return 0;
1001
1002 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1003 if (!nl_wowlan)
1004 return -ENOBUFS;
1005
1006 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1007 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1008 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1009 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1010 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1011 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1012 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1013 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1014 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1015 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1016 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1017 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1018 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1019 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1020 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1021 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1022 return -ENOBUFS;
1023
1024 if (dev->wiphy.wowlan.n_patterns) {
1025 struct nl80211_wowlan_pattern_support pat = {
1026 .max_patterns = dev->wiphy.wowlan.n_patterns,
1027 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
1028 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
1029 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
1030 };
1031
1032 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1033 sizeof(pat), &pat))
1034 return -ENOBUFS;
1035 }
1036
1037 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1038 return -ENOBUFS;
1039
1040 nla_nest_end(msg, nl_wowlan);
1041
1042 return 0;
1043 }
1044 #endif
1045
1046 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1047 struct ieee80211_supported_band *sband)
1048 {
1049 struct nlattr *nl_rates, *nl_rate;
1050 struct ieee80211_rate *rate;
1051 int i;
1052
1053 /* add HT info */
1054 if (sband->ht_cap.ht_supported &&
1055 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1056 sizeof(sband->ht_cap.mcs),
1057 &sband->ht_cap.mcs) ||
1058 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1059 sband->ht_cap.cap) ||
1060 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1061 sband->ht_cap.ampdu_factor) ||
1062 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1063 sband->ht_cap.ampdu_density)))
1064 return -ENOBUFS;
1065
1066 /* add VHT info */
1067 if (sband->vht_cap.vht_supported &&
1068 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1069 sizeof(sband->vht_cap.vht_mcs),
1070 &sband->vht_cap.vht_mcs) ||
1071 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1072 sband->vht_cap.cap)))
1073 return -ENOBUFS;
1074
1075 /* add bitrates */
1076 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1077 if (!nl_rates)
1078 return -ENOBUFS;
1079
1080 for (i = 0; i < sband->n_bitrates; i++) {
1081 nl_rate = nla_nest_start(msg, i);
1082 if (!nl_rate)
1083 return -ENOBUFS;
1084
1085 rate = &sband->bitrates[i];
1086 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1087 rate->bitrate))
1088 return -ENOBUFS;
1089 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1090 nla_put_flag(msg,
1091 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1092 return -ENOBUFS;
1093
1094 nla_nest_end(msg, nl_rate);
1095 }
1096
1097 nla_nest_end(msg, nl_rates);
1098
1099 return 0;
1100 }
1101
1102 static int
1103 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1104 const struct ieee80211_txrx_stypes *mgmt_stypes)
1105 {
1106 u16 stypes;
1107 struct nlattr *nl_ftypes, *nl_ifs;
1108 enum nl80211_iftype ift;
1109 int i;
1110
1111 if (!mgmt_stypes)
1112 return 0;
1113
1114 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1115 if (!nl_ifs)
1116 return -ENOBUFS;
1117
1118 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1119 nl_ftypes = nla_nest_start(msg, ift);
1120 if (!nl_ftypes)
1121 return -ENOBUFS;
1122 i = 0;
1123 stypes = mgmt_stypes[ift].tx;
1124 while (stypes) {
1125 if ((stypes & 1) &&
1126 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1127 (i << 4) | IEEE80211_FTYPE_MGMT))
1128 return -ENOBUFS;
1129 stypes >>= 1;
1130 i++;
1131 }
1132 nla_nest_end(msg, nl_ftypes);
1133 }
1134
1135 nla_nest_end(msg, nl_ifs);
1136
1137 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1138 if (!nl_ifs)
1139 return -ENOBUFS;
1140
1141 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1142 nl_ftypes = nla_nest_start(msg, ift);
1143 if (!nl_ftypes)
1144 return -ENOBUFS;
1145 i = 0;
1146 stypes = mgmt_stypes[ift].rx;
1147 while (stypes) {
1148 if ((stypes & 1) &&
1149 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1150 (i << 4) | IEEE80211_FTYPE_MGMT))
1151 return -ENOBUFS;
1152 stypes >>= 1;
1153 i++;
1154 }
1155 nla_nest_end(msg, nl_ftypes);
1156 }
1157 nla_nest_end(msg, nl_ifs);
1158
1159 return 0;
1160 }
1161
1162 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1163 struct sk_buff *msg, u32 portid, u32 seq,
1164 int flags, bool split, long *split_start,
1165 long *band_start, long *chan_start)
1166 {
1167 void *hdr;
1168 struct nlattr *nl_bands, *nl_band;
1169 struct nlattr *nl_freqs, *nl_freq;
1170 struct nlattr *nl_cmds;
1171 enum ieee80211_band band;
1172 struct ieee80211_channel *chan;
1173 int i;
1174 const struct ieee80211_txrx_stypes *mgmt_stypes =
1175 dev->wiphy.mgmt_stypes;
1176 long start = 0, start_chan = 0, start_band = 0;
1177 u32 features;
1178
1179 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1180 if (!hdr)
1181 return -ENOBUFS;
1182
1183 /* allow always using the variables */
1184 if (!split) {
1185 split_start = &start;
1186 band_start = &start_band;
1187 chan_start = &start_chan;
1188 }
1189
1190 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1191 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1192 wiphy_name(&dev->wiphy)) ||
1193 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1194 cfg80211_rdev_list_generation))
1195 goto nla_put_failure;
1196
1197 switch (*split_start) {
1198 case 0:
1199 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1200 dev->wiphy.retry_short) ||
1201 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1202 dev->wiphy.retry_long) ||
1203 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1204 dev->wiphy.frag_threshold) ||
1205 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1206 dev->wiphy.rts_threshold) ||
1207 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1208 dev->wiphy.coverage_class) ||
1209 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1210 dev->wiphy.max_scan_ssids) ||
1211 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1212 dev->wiphy.max_sched_scan_ssids) ||
1213 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1214 dev->wiphy.max_scan_ie_len) ||
1215 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1216 dev->wiphy.max_sched_scan_ie_len) ||
1217 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1218 dev->wiphy.max_match_sets))
1219 goto nla_put_failure;
1220
1221 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1222 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1223 goto nla_put_failure;
1224 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1225 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1226 goto nla_put_failure;
1227 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1228 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1229 goto nla_put_failure;
1230 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1231 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1232 goto nla_put_failure;
1233 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1234 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1235 goto nla_put_failure;
1236 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1237 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1238 goto nla_put_failure;
1239
1240 (*split_start)++;
1241 if (split)
1242 break;
1243 case 1:
1244 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1245 sizeof(u32) * dev->wiphy.n_cipher_suites,
1246 dev->wiphy.cipher_suites))
1247 goto nla_put_failure;
1248
1249 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1250 dev->wiphy.max_num_pmkids))
1251 goto nla_put_failure;
1252
1253 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1254 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1255 goto nla_put_failure;
1256
1257 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1258 dev->wiphy.available_antennas_tx) ||
1259 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1260 dev->wiphy.available_antennas_rx))
1261 goto nla_put_failure;
1262
1263 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1264 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1265 dev->wiphy.probe_resp_offload))
1266 goto nla_put_failure;
1267
1268 if ((dev->wiphy.available_antennas_tx ||
1269 dev->wiphy.available_antennas_rx) &&
1270 dev->ops->get_antenna) {
1271 u32 tx_ant = 0, rx_ant = 0;
1272 int res;
1273 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1274 if (!res) {
1275 if (nla_put_u32(msg,
1276 NL80211_ATTR_WIPHY_ANTENNA_TX,
1277 tx_ant) ||
1278 nla_put_u32(msg,
1279 NL80211_ATTR_WIPHY_ANTENNA_RX,
1280 rx_ant))
1281 goto nla_put_failure;
1282 }
1283 }
1284
1285 (*split_start)++;
1286 if (split)
1287 break;
1288 case 2:
1289 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1290 dev->wiphy.interface_modes))
1291 goto nla_put_failure;
1292 (*split_start)++;
1293 if (split)
1294 break;
1295 case 3:
1296 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1297 if (!nl_bands)
1298 goto nla_put_failure;
1299
1300 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1301 struct ieee80211_supported_band *sband;
1302
1303 sband = dev->wiphy.bands[band];
1304
1305 if (!sband)
1306 continue;
1307
1308 nl_band = nla_nest_start(msg, band);
1309 if (!nl_band)
1310 goto nla_put_failure;
1311
1312 switch (*chan_start) {
1313 case 0:
1314 if (nl80211_send_band_rateinfo(msg, sband))
1315 goto nla_put_failure;
1316 (*chan_start)++;
1317 if (split)
1318 break;
1319 default:
1320 /* add frequencies */
1321 nl_freqs = nla_nest_start(
1322 msg, NL80211_BAND_ATTR_FREQS);
1323 if (!nl_freqs)
1324 goto nla_put_failure;
1325
1326 for (i = *chan_start - 1;
1327 i < sband->n_channels;
1328 i++) {
1329 nl_freq = nla_nest_start(msg, i);
1330 if (!nl_freq)
1331 goto nla_put_failure;
1332
1333 chan = &sband->channels[i];
1334
1335 if (nl80211_msg_put_channel(msg, chan,
1336 split))
1337 goto nla_put_failure;
1338
1339 nla_nest_end(msg, nl_freq);
1340 if (split)
1341 break;
1342 }
1343 if (i < sband->n_channels)
1344 *chan_start = i + 2;
1345 else
1346 *chan_start = 0;
1347 nla_nest_end(msg, nl_freqs);
1348 }
1349
1350 nla_nest_end(msg, nl_band);
1351
1352 if (split) {
1353 /* start again here */
1354 if (*chan_start)
1355 band--;
1356 break;
1357 }
1358 }
1359 nla_nest_end(msg, nl_bands);
1360
1361 if (band < IEEE80211_NUM_BANDS)
1362 *band_start = band + 1;
1363 else
1364 *band_start = 0;
1365
1366 /* if bands & channels are done, continue outside */
1367 if (*band_start == 0 && *chan_start == 0)
1368 (*split_start)++;
1369 if (split)
1370 break;
1371 case 4:
1372 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1373 if (!nl_cmds)
1374 goto nla_put_failure;
1375
1376 i = 0;
1377 #define CMD(op, n) \
1378 do { \
1379 if (dev->ops->op) { \
1380 i++; \
1381 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1382 goto nla_put_failure; \
1383 } \
1384 } while (0)
1385
1386 CMD(add_virtual_intf, NEW_INTERFACE);
1387 CMD(change_virtual_intf, SET_INTERFACE);
1388 CMD(add_key, NEW_KEY);
1389 CMD(start_ap, START_AP);
1390 CMD(add_station, NEW_STATION);
1391 CMD(add_mpath, NEW_MPATH);
1392 CMD(update_mesh_config, SET_MESH_CONFIG);
1393 CMD(change_bss, SET_BSS);
1394 CMD(auth, AUTHENTICATE);
1395 CMD(assoc, ASSOCIATE);
1396 CMD(deauth, DEAUTHENTICATE);
1397 CMD(disassoc, DISASSOCIATE);
1398 CMD(join_ibss, JOIN_IBSS);
1399 CMD(join_mesh, JOIN_MESH);
1400 CMD(set_pmksa, SET_PMKSA);
1401 CMD(del_pmksa, DEL_PMKSA);
1402 CMD(flush_pmksa, FLUSH_PMKSA);
1403 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1404 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1405 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1406 CMD(mgmt_tx, FRAME);
1407 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1408 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1409 i++;
1410 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1411 goto nla_put_failure;
1412 }
1413 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1414 dev->ops->join_mesh) {
1415 i++;
1416 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1417 goto nla_put_failure;
1418 }
1419 CMD(set_wds_peer, SET_WDS_PEER);
1420 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1421 CMD(tdls_mgmt, TDLS_MGMT);
1422 CMD(tdls_oper, TDLS_OPER);
1423 }
1424 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1425 CMD(sched_scan_start, START_SCHED_SCAN);
1426 CMD(probe_client, PROBE_CLIENT);
1427 CMD(set_noack_map, SET_NOACK_MAP);
1428 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1429 i++;
1430 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1431 goto nla_put_failure;
1432 }
1433 CMD(start_p2p_device, START_P2P_DEVICE);
1434 CMD(set_mcast_rate, SET_MCAST_RATE);
1435 if (split) {
1436 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1437 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1438 }
1439
1440 #ifdef CONFIG_NL80211_TESTMODE
1441 CMD(testmode_cmd, TESTMODE);
1442 #endif
1443
1444 #undef CMD
1445
1446 if (dev->ops->connect || dev->ops->auth) {
1447 i++;
1448 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1449 goto nla_put_failure;
1450 }
1451
1452 if (dev->ops->disconnect || dev->ops->deauth) {
1453 i++;
1454 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1455 goto nla_put_failure;
1456 }
1457
1458 nla_nest_end(msg, nl_cmds);
1459 (*split_start)++;
1460 if (split)
1461 break;
1462 case 5:
1463 if (dev->ops->remain_on_channel &&
1464 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1465 nla_put_u32(msg,
1466 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1467 dev->wiphy.max_remain_on_channel_duration))
1468 goto nla_put_failure;
1469
1470 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1471 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1472 goto nla_put_failure;
1473
1474 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1475 goto nla_put_failure;
1476 (*split_start)++;
1477 if (split)
1478 break;
1479 case 6:
1480 #ifdef CONFIG_PM
1481 if (nl80211_send_wowlan(msg, dev, split))
1482 goto nla_put_failure;
1483 (*split_start)++;
1484 if (split)
1485 break;
1486 #else
1487 (*split_start)++;
1488 #endif
1489 case 7:
1490 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1491 dev->wiphy.software_iftypes))
1492 goto nla_put_failure;
1493
1494 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1495 goto nla_put_failure;
1496
1497 (*split_start)++;
1498 if (split)
1499 break;
1500 case 8:
1501 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1502 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1503 dev->wiphy.ap_sme_capa))
1504 goto nla_put_failure;
1505
1506 features = dev->wiphy.features;
1507 /*
1508 * We can only add the per-channel limit information if the
1509 * dump is split, otherwise it makes it too big. Therefore
1510 * only advertise it in that case.
1511 */
1512 if (split)
1513 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1514 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1515 goto nla_put_failure;
1516
1517 if (dev->wiphy.ht_capa_mod_mask &&
1518 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1519 sizeof(*dev->wiphy.ht_capa_mod_mask),
1520 dev->wiphy.ht_capa_mod_mask))
1521 goto nla_put_failure;
1522
1523 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1524 dev->wiphy.max_acl_mac_addrs &&
1525 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1526 dev->wiphy.max_acl_mac_addrs))
1527 goto nla_put_failure;
1528
1529 if (dev->wiphy.n_vendor_commands) {
1530 const struct nl80211_vendor_cmd_info *info;
1531 struct nlattr *nested;
1532
1533 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1534 if (!nested)
1535 goto nla_put_failure;
1536
1537 for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1538 info = &dev->wiphy.vendor_commands[i].info;
1539 if (nla_put(msg, i + 1, sizeof(*info), info))
1540 goto nla_put_failure;
1541 }
1542 nla_nest_end(msg, nested);
1543 }
1544
1545 if (dev->wiphy.n_vendor_events) {
1546 const struct nl80211_vendor_cmd_info *info;
1547 struct nlattr *nested;
1548
1549 nested = nla_nest_start(msg,
1550 NL80211_ATTR_VENDOR_EVENTS);
1551 if (!nested)
1552 goto nla_put_failure;
1553
1554 for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1555 info = &dev->wiphy.vendor_events[i];
1556 if (nla_put(msg, i + 1, sizeof(*info), info))
1557 goto nla_put_failure;
1558 }
1559 nla_nest_end(msg, nested);
1560 }
1561
1562 /*
1563 * Any information below this point is only available to
1564 * applications that can deal with it being split. This
1565 * helps ensure that newly added capabilities don't break
1566 * older tools by overrunning their buffers.
1567 *
1568 * We still increment split_start so that in the split
1569 * case we'll continue with more data in the next round,
1570 * but break unconditionally so unsplit data stops here.
1571 */
1572 (*split_start)++;
1573 break;
1574 case 9:
1575 if (dev->wiphy.extended_capabilities &&
1576 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1577 dev->wiphy.extended_capabilities_len,
1578 dev->wiphy.extended_capabilities) ||
1579 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1580 dev->wiphy.extended_capabilities_len,
1581 dev->wiphy.extended_capabilities_mask)))
1582 goto nla_put_failure;
1583
1584 if (dev->wiphy.vht_capa_mod_mask &&
1585 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1586 sizeof(*dev->wiphy.vht_capa_mod_mask),
1587 dev->wiphy.vht_capa_mod_mask))
1588 goto nla_put_failure;
1589
1590 /* done */
1591 *split_start = 0;
1592 break;
1593 }
1594 return genlmsg_end(msg, hdr);
1595
1596 nla_put_failure:
1597 genlmsg_cancel(msg, hdr);
1598 return -EMSGSIZE;
1599 }
1600
1601 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1602 {
1603 int idx = 0, ret;
1604 int start = cb->args[0];
1605 struct cfg80211_registered_device *dev;
1606 s64 filter_wiphy = -1;
1607 bool split = false;
1608 struct nlattr **tb;
1609 int res;
1610
1611 /* will be zeroed in nlmsg_parse() */
1612 tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
1613 if (!tb)
1614 return -ENOMEM;
1615
1616 mutex_lock(&cfg80211_mutex);
1617 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1618 tb, NL80211_ATTR_MAX, nl80211_policy);
1619 if (res == 0) {
1620 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1621 if (tb[NL80211_ATTR_WIPHY])
1622 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1623 if (tb[NL80211_ATTR_WDEV])
1624 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1625 if (tb[NL80211_ATTR_IFINDEX]) {
1626 struct net_device *netdev;
1627 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1628
1629 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1630 if (!netdev) {
1631 mutex_unlock(&cfg80211_mutex);
1632 kfree(tb);
1633 return -ENODEV;
1634 }
1635 if (netdev->ieee80211_ptr) {
1636 dev = wiphy_to_dev(
1637 netdev->ieee80211_ptr->wiphy);
1638 filter_wiphy = dev->wiphy_idx;
1639 }
1640 dev_put(netdev);
1641 }
1642 }
1643 kfree(tb);
1644
1645 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1646 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1647 continue;
1648 if (++idx <= start)
1649 continue;
1650 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1651 continue;
1652 /* attempt to fit multiple wiphy data chunks into the skb */
1653 do {
1654 ret = nl80211_send_wiphy(dev, skb,
1655 NETLINK_CB(cb->skb).portid,
1656 cb->nlh->nlmsg_seq,
1657 NLM_F_MULTI,
1658 split, &cb->args[1],
1659 &cb->args[2],
1660 &cb->args[3]);
1661 if (ret < 0) {
1662 /*
1663 * If sending the wiphy data didn't fit (ENOBUFS
1664 * or EMSGSIZE returned), this SKB is still
1665 * empty (so it's not too big because another
1666 * wiphy dataset is already in the skb) and
1667 * we've not tried to adjust the dump allocation
1668 * yet ... then adjust the alloc size to be
1669 * bigger, and return 1 but with the empty skb.
1670 * This results in an empty message being RX'ed
1671 * in userspace, but that is ignored.
1672 *
1673 * We can then retry with the larger buffer.
1674 */
1675 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1676 !skb->len &&
1677 cb->min_dump_alloc < 4096) {
1678 cb->min_dump_alloc = 4096;
1679 mutex_unlock(&cfg80211_mutex);
1680 return 1;
1681 }
1682 idx--;
1683 break;
1684 }
1685 } while (cb->args[1] > 0);
1686 break;
1687 }
1688 mutex_unlock(&cfg80211_mutex);
1689
1690 cb->args[0] = idx;
1691
1692 return skb->len;
1693 }
1694
1695 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1696 {
1697 struct sk_buff *msg;
1698 struct cfg80211_registered_device *dev = info->user_ptr[0];
1699
1700 msg = nlmsg_new(4096, GFP_KERNEL);
1701 if (!msg)
1702 return -ENOMEM;
1703
1704 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1705 false, NULL, NULL, NULL) < 0) {
1706 nlmsg_free(msg);
1707 return -ENOBUFS;
1708 }
1709
1710 return genlmsg_reply(msg, info);
1711 }
1712
1713 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1714 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1715 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1716 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1717 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1718 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1719 };
1720
1721 static int parse_txq_params(struct nlattr *tb[],
1722 struct ieee80211_txq_params *txq_params)
1723 {
1724 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1725 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1726 !tb[NL80211_TXQ_ATTR_AIFS])
1727 return -EINVAL;
1728
1729 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1730 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1731 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1732 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1733 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1734
1735 if (txq_params->ac >= NL80211_NUM_ACS)
1736 return -EINVAL;
1737
1738 return 0;
1739 }
1740
1741 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1742 {
1743 /*
1744 * You can only set the channel explicitly for WDS interfaces,
1745 * all others have their channel managed via their respective
1746 * "establish a connection" command (connect, join, ...)
1747 *
1748 * For AP/GO and mesh mode, the channel can be set with the
1749 * channel userspace API, but is only stored and passed to the
1750 * low-level driver when the AP starts or the mesh is joined.
1751 * This is for backward compatibility, userspace can also give
1752 * the channel in the start-ap or join-mesh commands instead.
1753 *
1754 * Monitors are special as they are normally slaved to
1755 * whatever else is going on, so they have their own special
1756 * operation to set the monitor channel if possible.
1757 */
1758 return !wdev ||
1759 wdev->iftype == NL80211_IFTYPE_AP ||
1760 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1761 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1762 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1763 }
1764
1765 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1766 struct genl_info *info,
1767 struct cfg80211_chan_def *chandef)
1768 {
1769 u32 control_freq;
1770
1771 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1772 return -EINVAL;
1773
1774 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1775
1776 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1777 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1778 chandef->center_freq1 = control_freq;
1779 chandef->center_freq2 = 0;
1780
1781 /* Primary channel not allowed */
1782 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1783 return -EINVAL;
1784
1785 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1786 enum nl80211_channel_type chantype;
1787
1788 chantype = nla_get_u32(
1789 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1790
1791 switch (chantype) {
1792 case NL80211_CHAN_NO_HT:
1793 case NL80211_CHAN_HT20:
1794 case NL80211_CHAN_HT40PLUS:
1795 case NL80211_CHAN_HT40MINUS:
1796 cfg80211_chandef_create(chandef, chandef->chan,
1797 chantype);
1798 break;
1799 default:
1800 return -EINVAL;
1801 }
1802 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1803 chandef->width =
1804 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1805 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1806 chandef->center_freq1 =
1807 nla_get_u32(
1808 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1809 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1810 chandef->center_freq2 =
1811 nla_get_u32(
1812 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1813 }
1814
1815 if (!cfg80211_chandef_valid(chandef))
1816 return -EINVAL;
1817
1818 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1819 IEEE80211_CHAN_DISABLED))
1820 return -EINVAL;
1821
1822 return 0;
1823 }
1824
1825 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1826 struct wireless_dev *wdev,
1827 struct genl_info *info)
1828 {
1829 struct cfg80211_chan_def chandef;
1830 int result;
1831 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1832
1833 if (wdev)
1834 iftype = wdev->iftype;
1835
1836 if (!nl80211_can_set_dev_channel(wdev))
1837 return -EOPNOTSUPP;
1838
1839 result = nl80211_parse_chandef(rdev, info, &chandef);
1840 if (result)
1841 return result;
1842
1843 mutex_lock(&rdev->devlist_mtx);
1844 switch (iftype) {
1845 case NL80211_IFTYPE_AP:
1846 case NL80211_IFTYPE_P2P_GO:
1847 if (wdev->beacon_interval) {
1848 result = -EBUSY;
1849 break;
1850 }
1851 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1852 result = -EINVAL;
1853 break;
1854 }
1855 wdev->preset_chandef = chandef;
1856 result = 0;
1857 break;
1858 case NL80211_IFTYPE_MESH_POINT:
1859 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1860 break;
1861 case NL80211_IFTYPE_MONITOR:
1862 result = cfg80211_set_monitor_channel(rdev, &chandef);
1863 break;
1864 default:
1865 result = -EINVAL;
1866 }
1867 mutex_unlock(&rdev->devlist_mtx);
1868
1869 return result;
1870 }
1871
1872 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1873 {
1874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1875 struct net_device *netdev = info->user_ptr[1];
1876
1877 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1878 }
1879
1880 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1881 {
1882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1883 struct net_device *dev = info->user_ptr[1];
1884 struct wireless_dev *wdev = dev->ieee80211_ptr;
1885 const u8 *bssid;
1886
1887 if (!info->attrs[NL80211_ATTR_MAC])
1888 return -EINVAL;
1889
1890 if (netif_running(dev))
1891 return -EBUSY;
1892
1893 if (!rdev->ops->set_wds_peer)
1894 return -EOPNOTSUPP;
1895
1896 if (wdev->iftype != NL80211_IFTYPE_WDS)
1897 return -EOPNOTSUPP;
1898
1899 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1900 return rdev_set_wds_peer(rdev, dev, bssid);
1901 }
1902
1903
1904 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1905 {
1906 struct cfg80211_registered_device *rdev;
1907 struct net_device *netdev = NULL;
1908 struct wireless_dev *wdev;
1909 int result = 0, rem_txq_params = 0;
1910 struct nlattr *nl_txq_params;
1911 u32 changed;
1912 u8 retry_short = 0, retry_long = 0;
1913 u32 frag_threshold = 0, rts_threshold = 0;
1914 u8 coverage_class = 0;
1915
1916 /*
1917 * Try to find the wiphy and netdev. Normally this
1918 * function shouldn't need the netdev, but this is
1919 * done for backward compatibility -- previously
1920 * setting the channel was done per wiphy, but now
1921 * it is per netdev. Previous userland like hostapd
1922 * also passed a netdev to set_wiphy, so that it is
1923 * possible to let that go to the right netdev!
1924 */
1925 mutex_lock(&cfg80211_mutex);
1926
1927 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1928 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1929
1930 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1931 if (netdev && netdev->ieee80211_ptr) {
1932 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1933 mutex_lock(&rdev->mtx);
1934 } else
1935 netdev = NULL;
1936 }
1937
1938 if (!netdev) {
1939 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1940 info->attrs);
1941 if (IS_ERR(rdev)) {
1942 mutex_unlock(&cfg80211_mutex);
1943 return PTR_ERR(rdev);
1944 }
1945 wdev = NULL;
1946 netdev = NULL;
1947 result = 0;
1948
1949 mutex_lock(&rdev->mtx);
1950 } else
1951 wdev = netdev->ieee80211_ptr;
1952
1953 /*
1954 * end workaround code, by now the rdev is available
1955 * and locked, and wdev may or may not be NULL.
1956 */
1957
1958 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1959 result = cfg80211_dev_rename(
1960 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1961
1962 mutex_unlock(&cfg80211_mutex);
1963
1964 if (result)
1965 goto bad_res;
1966
1967 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1968 struct ieee80211_txq_params txq_params;
1969 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1970
1971 if (!rdev->ops->set_txq_params) {
1972 result = -EOPNOTSUPP;
1973 goto bad_res;
1974 }
1975
1976 if (!netdev) {
1977 result = -EINVAL;
1978 goto bad_res;
1979 }
1980
1981 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1982 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1983 result = -EINVAL;
1984 goto bad_res;
1985 }
1986
1987 if (!netif_running(netdev)) {
1988 result = -ENETDOWN;
1989 goto bad_res;
1990 }
1991
1992 nla_for_each_nested(nl_txq_params,
1993 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1994 rem_txq_params) {
1995 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1996 nla_data(nl_txq_params),
1997 nla_len(nl_txq_params),
1998 txq_params_policy);
1999 result = parse_txq_params(tb, &txq_params);
2000 if (result)
2001 goto bad_res;
2002
2003 result = rdev_set_txq_params(rdev, netdev,
2004 &txq_params);
2005 if (result)
2006 goto bad_res;
2007 }
2008 }
2009
2010 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2011 result = __nl80211_set_channel(rdev,
2012 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2013 info);
2014 if (result)
2015 goto bad_res;
2016 }
2017
2018 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2019 struct wireless_dev *txp_wdev = wdev;
2020 enum nl80211_tx_power_setting type;
2021 int idx, mbm = 0;
2022
2023 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2024 txp_wdev = NULL;
2025
2026 if (!rdev->ops->set_tx_power) {
2027 result = -EOPNOTSUPP;
2028 goto bad_res;
2029 }
2030
2031 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2032 type = nla_get_u32(info->attrs[idx]);
2033
2034 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2035 (type != NL80211_TX_POWER_AUTOMATIC)) {
2036 result = -EINVAL;
2037 goto bad_res;
2038 }
2039
2040 if (type != NL80211_TX_POWER_AUTOMATIC) {
2041 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2042 mbm = nla_get_u32(info->attrs[idx]);
2043 }
2044
2045 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2046 if (result)
2047 goto bad_res;
2048 }
2049
2050 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2051 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2052 u32 tx_ant, rx_ant;
2053 if ((!rdev->wiphy.available_antennas_tx &&
2054 !rdev->wiphy.available_antennas_rx) ||
2055 !rdev->ops->set_antenna) {
2056 result = -EOPNOTSUPP;
2057 goto bad_res;
2058 }
2059
2060 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2061 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2062
2063 /* reject antenna configurations which don't match the
2064 * available antenna masks, except for the "all" mask */
2065 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2066 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2067 result = -EINVAL;
2068 goto bad_res;
2069 }
2070
2071 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2072 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2073
2074 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2075 if (result)
2076 goto bad_res;
2077 }
2078
2079 changed = 0;
2080
2081 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2082 retry_short = nla_get_u8(
2083 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2084 if (retry_short == 0) {
2085 result = -EINVAL;
2086 goto bad_res;
2087 }
2088 changed |= WIPHY_PARAM_RETRY_SHORT;
2089 }
2090
2091 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2092 retry_long = nla_get_u8(
2093 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2094 if (retry_long == 0) {
2095 result = -EINVAL;
2096 goto bad_res;
2097 }
2098 changed |= WIPHY_PARAM_RETRY_LONG;
2099 }
2100
2101 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2102 frag_threshold = nla_get_u32(
2103 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2104 if (frag_threshold < 256) {
2105 result = -EINVAL;
2106 goto bad_res;
2107 }
2108 if (frag_threshold != (u32) -1) {
2109 /*
2110 * Fragments (apart from the last one) are required to
2111 * have even length. Make the fragmentation code
2112 * simpler by stripping LSB should someone try to use
2113 * odd threshold value.
2114 */
2115 frag_threshold &= ~0x1;
2116 }
2117 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2118 }
2119
2120 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2121 rts_threshold = nla_get_u32(
2122 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2123 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2124 }
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2127 coverage_class = nla_get_u8(
2128 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2129 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2130 }
2131
2132 if (changed) {
2133 u8 old_retry_short, old_retry_long;
2134 u32 old_frag_threshold, old_rts_threshold;
2135 u8 old_coverage_class;
2136
2137 if (!rdev->ops->set_wiphy_params) {
2138 result = -EOPNOTSUPP;
2139 goto bad_res;
2140 }
2141
2142 old_retry_short = rdev->wiphy.retry_short;
2143 old_retry_long = rdev->wiphy.retry_long;
2144 old_frag_threshold = rdev->wiphy.frag_threshold;
2145 old_rts_threshold = rdev->wiphy.rts_threshold;
2146 old_coverage_class = rdev->wiphy.coverage_class;
2147
2148 if (changed & WIPHY_PARAM_RETRY_SHORT)
2149 rdev->wiphy.retry_short = retry_short;
2150 if (changed & WIPHY_PARAM_RETRY_LONG)
2151 rdev->wiphy.retry_long = retry_long;
2152 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2153 rdev->wiphy.frag_threshold = frag_threshold;
2154 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2155 rdev->wiphy.rts_threshold = rts_threshold;
2156 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2157 rdev->wiphy.coverage_class = coverage_class;
2158
2159 result = rdev_set_wiphy_params(rdev, changed);
2160 if (result) {
2161 rdev->wiphy.retry_short = old_retry_short;
2162 rdev->wiphy.retry_long = old_retry_long;
2163 rdev->wiphy.frag_threshold = old_frag_threshold;
2164 rdev->wiphy.rts_threshold = old_rts_threshold;
2165 rdev->wiphy.coverage_class = old_coverage_class;
2166 }
2167 }
2168
2169 bad_res:
2170 mutex_unlock(&rdev->mtx);
2171 if (netdev)
2172 dev_put(netdev);
2173 return result;
2174 }
2175
2176 static inline u64 wdev_id(struct wireless_dev *wdev)
2177 {
2178 return (u64)wdev->identifier |
2179 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2180 }
2181
2182 static int nl80211_send_chandef(struct sk_buff *msg,
2183 struct cfg80211_chan_def *chandef)
2184 {
2185 WARN_ON(!cfg80211_chandef_valid(chandef));
2186
2187 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2188 chandef->chan->center_freq))
2189 return -ENOBUFS;
2190 switch (chandef->width) {
2191 case NL80211_CHAN_WIDTH_20_NOHT:
2192 case NL80211_CHAN_WIDTH_20:
2193 case NL80211_CHAN_WIDTH_40:
2194 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2195 cfg80211_get_chandef_type(chandef)))
2196 return -ENOBUFS;
2197 break;
2198 default:
2199 break;
2200 }
2201 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2202 return -ENOBUFS;
2203 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2204 return -ENOBUFS;
2205 if (chandef->center_freq2 &&
2206 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2207 return -ENOBUFS;
2208 return 0;
2209 }
2210
2211 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2212 struct cfg80211_registered_device *rdev,
2213 struct wireless_dev *wdev)
2214 {
2215 struct net_device *dev = wdev->netdev;
2216 void *hdr;
2217
2218 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2219 if (!hdr)
2220 return -1;
2221
2222 if (dev &&
2223 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2224 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2225 goto nla_put_failure;
2226
2227 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2228 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2229 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2230 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2231 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2232 rdev->devlist_generation ^
2233 (cfg80211_rdev_list_generation << 2)))
2234 goto nla_put_failure;
2235
2236 if (rdev->ops->get_channel) {
2237 int ret;
2238 struct cfg80211_chan_def chandef;
2239
2240 ret = rdev_get_channel(rdev, wdev, &chandef);
2241 if (ret == 0) {
2242 if (nl80211_send_chandef(msg, &chandef))
2243 goto nla_put_failure;
2244 }
2245 }
2246
2247 if (wdev->ssid_len) {
2248 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2249 goto nla_put_failure;
2250 }
2251
2252 return genlmsg_end(msg, hdr);
2253
2254 nla_put_failure:
2255 genlmsg_cancel(msg, hdr);
2256 return -EMSGSIZE;
2257 }
2258
2259 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2260 {
2261 int wp_idx = 0;
2262 int if_idx = 0;
2263 int wp_start = cb->args[0];
2264 int if_start = cb->args[1];
2265 struct cfg80211_registered_device *rdev;
2266 struct wireless_dev *wdev;
2267
2268 mutex_lock(&cfg80211_mutex);
2269 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2270 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2271 continue;
2272 if (wp_idx < wp_start) {
2273 wp_idx++;
2274 continue;
2275 }
2276 if_idx = 0;
2277
2278 mutex_lock(&rdev->devlist_mtx);
2279 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2280 if (if_idx < if_start) {
2281 if_idx++;
2282 continue;
2283 }
2284 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2285 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2286 rdev, wdev) < 0) {
2287 mutex_unlock(&rdev->devlist_mtx);
2288 goto out;
2289 }
2290 if_idx++;
2291 }
2292 mutex_unlock(&rdev->devlist_mtx);
2293
2294 wp_idx++;
2295 }
2296 out:
2297 mutex_unlock(&cfg80211_mutex);
2298
2299 cb->args[0] = wp_idx;
2300 cb->args[1] = if_idx;
2301
2302 return skb->len;
2303 }
2304
2305 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2306 {
2307 struct sk_buff *msg;
2308 struct cfg80211_registered_device *dev = info->user_ptr[0];
2309 struct wireless_dev *wdev = info->user_ptr[1];
2310
2311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2312 if (!msg)
2313 return -ENOMEM;
2314
2315 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2316 dev, wdev) < 0) {
2317 nlmsg_free(msg);
2318 return -ENOBUFS;
2319 }
2320
2321 return genlmsg_reply(msg, info);
2322 }
2323
2324 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2325 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2326 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2327 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2328 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2329 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2330 };
2331
2332 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2333 {
2334 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2335 int flag;
2336
2337 *mntrflags = 0;
2338
2339 if (!nla)
2340 return -EINVAL;
2341
2342 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2343 nla, mntr_flags_policy))
2344 return -EINVAL;
2345
2346 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2347 if (flags[flag])
2348 *mntrflags |= (1<<flag);
2349
2350 return 0;
2351 }
2352
2353 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2354 struct net_device *netdev, u8 use_4addr,
2355 enum nl80211_iftype iftype)
2356 {
2357 if (!use_4addr) {
2358 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2359 return -EBUSY;
2360 return 0;
2361 }
2362
2363 switch (iftype) {
2364 case NL80211_IFTYPE_AP_VLAN:
2365 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2366 return 0;
2367 break;
2368 case NL80211_IFTYPE_STATION:
2369 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2370 return 0;
2371 break;
2372 default:
2373 break;
2374 }
2375
2376 return -EOPNOTSUPP;
2377 }
2378
2379 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2380 {
2381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2382 struct vif_params params;
2383 int err;
2384 enum nl80211_iftype otype, ntype;
2385 struct net_device *dev = info->user_ptr[1];
2386 u32 _flags, *flags = NULL;
2387 bool change = false;
2388
2389 memset(&params, 0, sizeof(params));
2390
2391 otype = ntype = dev->ieee80211_ptr->iftype;
2392
2393 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2394 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2395 if (otype != ntype)
2396 change = true;
2397 if (ntype > NL80211_IFTYPE_MAX)
2398 return -EINVAL;
2399 }
2400
2401 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2402 struct wireless_dev *wdev = dev->ieee80211_ptr;
2403
2404 if (ntype != NL80211_IFTYPE_MESH_POINT)
2405 return -EINVAL;
2406 if (netif_running(dev))
2407 return -EBUSY;
2408
2409 wdev_lock(wdev);
2410 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2411 IEEE80211_MAX_MESH_ID_LEN);
2412 wdev->mesh_id_up_len =
2413 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2414 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2415 wdev->mesh_id_up_len);
2416 wdev_unlock(wdev);
2417 }
2418
2419 if (info->attrs[NL80211_ATTR_4ADDR]) {
2420 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2421 change = true;
2422 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2423 if (err)
2424 return err;
2425 } else {
2426 params.use_4addr = -1;
2427 }
2428
2429 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2430 if (ntype != NL80211_IFTYPE_MONITOR)
2431 return -EINVAL;
2432 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2433 &_flags);
2434 if (err)
2435 return err;
2436
2437 flags = &_flags;
2438 change = true;
2439 }
2440
2441 if (change)
2442 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2443 else
2444 err = 0;
2445
2446 if (!err && params.use_4addr != -1)
2447 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2448
2449 return err;
2450 }
2451
2452 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2453 {
2454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2455 struct vif_params params;
2456 struct wireless_dev *wdev;
2457 struct sk_buff *msg;
2458 int err;
2459 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2460 u32 flags;
2461
2462 memset(&params, 0, sizeof(params));
2463
2464 if (!info->attrs[NL80211_ATTR_IFNAME])
2465 return -EINVAL;
2466
2467 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2468 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2469 if (type > NL80211_IFTYPE_MAX)
2470 return -EINVAL;
2471 }
2472
2473 if (!rdev->ops->add_virtual_intf ||
2474 !(rdev->wiphy.interface_modes & (1 << type)))
2475 return -EOPNOTSUPP;
2476
2477 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2478 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2479 ETH_ALEN);
2480 if (!is_valid_ether_addr(params.macaddr))
2481 return -EADDRNOTAVAIL;
2482 }
2483
2484 if (info->attrs[NL80211_ATTR_4ADDR]) {
2485 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2486 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2487 if (err)
2488 return err;
2489 }
2490
2491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2492 if (!msg)
2493 return -ENOMEM;
2494
2495 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2496 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2497 &flags);
2498 wdev = rdev_add_virtual_intf(rdev,
2499 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2500 type, err ? NULL : &flags, &params);
2501 if (IS_ERR(wdev)) {
2502 nlmsg_free(msg);
2503 return PTR_ERR(wdev);
2504 }
2505
2506 switch (type) {
2507 case NL80211_IFTYPE_MESH_POINT:
2508 if (!info->attrs[NL80211_ATTR_MESH_ID])
2509 break;
2510 wdev_lock(wdev);
2511 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2512 IEEE80211_MAX_MESH_ID_LEN);
2513 wdev->mesh_id_up_len =
2514 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2515 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2516 wdev->mesh_id_up_len);
2517 wdev_unlock(wdev);
2518 break;
2519 case NL80211_IFTYPE_P2P_DEVICE:
2520 /*
2521 * P2P Device doesn't have a netdev, so doesn't go
2522 * through the netdev notifier and must be added here
2523 */
2524 mutex_init(&wdev->mtx);
2525 INIT_LIST_HEAD(&wdev->event_list);
2526 spin_lock_init(&wdev->event_lock);
2527 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2528 spin_lock_init(&wdev->mgmt_registrations_lock);
2529
2530 mutex_lock(&rdev->devlist_mtx);
2531 wdev->identifier = ++rdev->wdev_id;
2532 list_add_rcu(&wdev->list, &rdev->wdev_list);
2533 rdev->devlist_generation++;
2534 mutex_unlock(&rdev->devlist_mtx);
2535 break;
2536 default:
2537 break;
2538 }
2539
2540 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2541 rdev, wdev) < 0) {
2542 nlmsg_free(msg);
2543 return -ENOBUFS;
2544 }
2545
2546 return genlmsg_reply(msg, info);
2547 }
2548
2549 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2550 {
2551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2552 struct wireless_dev *wdev = info->user_ptr[1];
2553
2554 if (!rdev->ops->del_virtual_intf)
2555 return -EOPNOTSUPP;
2556
2557 /*
2558 * If we remove a wireless device without a netdev then clear
2559 * user_ptr[1] so that nl80211_post_doit won't dereference it
2560 * to check if it needs to do dev_put(). Otherwise it crashes
2561 * since the wdev has been freed, unlike with a netdev where
2562 * we need the dev_put() for the netdev to really be freed.
2563 */
2564 if (!wdev->netdev)
2565 info->user_ptr[1] = NULL;
2566
2567 return rdev_del_virtual_intf(rdev, wdev);
2568 }
2569
2570 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2571 {
2572 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2573 struct net_device *dev = info->user_ptr[1];
2574 u16 noack_map;
2575
2576 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2577 return -EINVAL;
2578
2579 if (!rdev->ops->set_noack_map)
2580 return -EOPNOTSUPP;
2581
2582 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2583
2584 return rdev_set_noack_map(rdev, dev, noack_map);
2585 }
2586
2587 struct get_key_cookie {
2588 struct sk_buff *msg;
2589 int error;
2590 int idx;
2591 };
2592
2593 static void get_key_callback(void *c, struct key_params *params)
2594 {
2595 struct nlattr *key;
2596 struct get_key_cookie *cookie = c;
2597
2598 if ((params->key &&
2599 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2600 params->key_len, params->key)) ||
2601 (params->seq &&
2602 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2603 params->seq_len, params->seq)) ||
2604 (params->cipher &&
2605 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2606 params->cipher)))
2607 goto nla_put_failure;
2608
2609 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2610 if (!key)
2611 goto nla_put_failure;
2612
2613 if ((params->key &&
2614 nla_put(cookie->msg, NL80211_KEY_DATA,
2615 params->key_len, params->key)) ||
2616 (params->seq &&
2617 nla_put(cookie->msg, NL80211_KEY_SEQ,
2618 params->seq_len, params->seq)) ||
2619 (params->cipher &&
2620 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2621 params->cipher)))
2622 goto nla_put_failure;
2623
2624 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2625 goto nla_put_failure;
2626
2627 nla_nest_end(cookie->msg, key);
2628
2629 return;
2630 nla_put_failure:
2631 cookie->error = 1;
2632 }
2633
2634 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2635 {
2636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2637 int err;
2638 struct net_device *dev = info->user_ptr[1];
2639 u8 key_idx = 0;
2640 const u8 *mac_addr = NULL;
2641 bool pairwise;
2642 struct get_key_cookie cookie = {
2643 .error = 0,
2644 };
2645 void *hdr;
2646 struct sk_buff *msg;
2647
2648 if (info->attrs[NL80211_ATTR_KEY_IDX])
2649 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2650
2651 if (key_idx > 5)
2652 return -EINVAL;
2653
2654 if (info->attrs[NL80211_ATTR_MAC])
2655 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2656
2657 pairwise = !!mac_addr;
2658 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2659 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2660 if (kt >= NUM_NL80211_KEYTYPES)
2661 return -EINVAL;
2662 if (kt != NL80211_KEYTYPE_GROUP &&
2663 kt != NL80211_KEYTYPE_PAIRWISE)
2664 return -EINVAL;
2665 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2666 }
2667
2668 if (!rdev->ops->get_key)
2669 return -EOPNOTSUPP;
2670
2671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 if (!msg)
2673 return -ENOMEM;
2674
2675 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2676 NL80211_CMD_NEW_KEY);
2677 if (!hdr)
2678 goto nla_put_failure;
2679
2680 cookie.msg = msg;
2681 cookie.idx = key_idx;
2682
2683 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2684 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2685 goto nla_put_failure;
2686 if (mac_addr &&
2687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2688 goto nla_put_failure;
2689
2690 if (pairwise && mac_addr &&
2691 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2692 return -ENOENT;
2693
2694 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2695 get_key_callback);
2696
2697 if (err)
2698 goto free_msg;
2699
2700 if (cookie.error)
2701 goto nla_put_failure;
2702
2703 genlmsg_end(msg, hdr);
2704 return genlmsg_reply(msg, info);
2705
2706 nla_put_failure:
2707 err = -ENOBUFS;
2708 free_msg:
2709 nlmsg_free(msg);
2710 return err;
2711 }
2712
2713 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2714 {
2715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2716 struct key_parse key;
2717 int err;
2718 struct net_device *dev = info->user_ptr[1];
2719
2720 err = nl80211_parse_key(info, &key);
2721 if (err)
2722 return err;
2723
2724 if (key.idx < 0)
2725 return -EINVAL;
2726
2727 /* only support setting default key */
2728 if (!key.def && !key.defmgmt)
2729 return -EINVAL;
2730
2731 wdev_lock(dev->ieee80211_ptr);
2732
2733 if (key.def) {
2734 if (!rdev->ops->set_default_key) {
2735 err = -EOPNOTSUPP;
2736 goto out;
2737 }
2738
2739 err = nl80211_key_allowed(dev->ieee80211_ptr);
2740 if (err)
2741 goto out;
2742
2743 err = rdev_set_default_key(rdev, dev, key.idx,
2744 key.def_uni, key.def_multi);
2745
2746 if (err)
2747 goto out;
2748
2749 #ifdef CONFIG_CFG80211_WEXT
2750 dev->ieee80211_ptr->wext.default_key = key.idx;
2751 #endif
2752 } else {
2753 if (key.def_uni || !key.def_multi) {
2754 err = -EINVAL;
2755 goto out;
2756 }
2757
2758 if (!rdev->ops->set_default_mgmt_key) {
2759 err = -EOPNOTSUPP;
2760 goto out;
2761 }
2762
2763 err = nl80211_key_allowed(dev->ieee80211_ptr);
2764 if (err)
2765 goto out;
2766
2767 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2768 if (err)
2769 goto out;
2770
2771 #ifdef CONFIG_CFG80211_WEXT
2772 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2773 #endif
2774 }
2775
2776 out:
2777 wdev_unlock(dev->ieee80211_ptr);
2778
2779 return err;
2780 }
2781
2782 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2783 {
2784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2785 int err;
2786 struct net_device *dev = info->user_ptr[1];
2787 struct key_parse key;
2788 const u8 *mac_addr = NULL;
2789
2790 err = nl80211_parse_key(info, &key);
2791 if (err)
2792 return err;
2793
2794 if (!key.p.key)
2795 return -EINVAL;
2796
2797 if (info->attrs[NL80211_ATTR_MAC])
2798 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2799
2800 if (key.type == -1) {
2801 if (mac_addr)
2802 key.type = NL80211_KEYTYPE_PAIRWISE;
2803 else
2804 key.type = NL80211_KEYTYPE_GROUP;
2805 }
2806
2807 /* for now */
2808 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2809 key.type != NL80211_KEYTYPE_GROUP)
2810 return -EINVAL;
2811
2812 if (!rdev->ops->add_key)
2813 return -EOPNOTSUPP;
2814
2815 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2816 key.type == NL80211_KEYTYPE_PAIRWISE,
2817 mac_addr))
2818 return -EINVAL;
2819
2820 wdev_lock(dev->ieee80211_ptr);
2821 err = nl80211_key_allowed(dev->ieee80211_ptr);
2822 if (!err)
2823 err = rdev_add_key(rdev, dev, key.idx,
2824 key.type == NL80211_KEYTYPE_PAIRWISE,
2825 mac_addr, &key.p);
2826 wdev_unlock(dev->ieee80211_ptr);
2827
2828 return err;
2829 }
2830
2831 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2832 {
2833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2834 int err;
2835 struct net_device *dev = info->user_ptr[1];
2836 u8 *mac_addr = NULL;
2837 struct key_parse key;
2838
2839 err = nl80211_parse_key(info, &key);
2840 if (err)
2841 return err;
2842
2843 if (info->attrs[NL80211_ATTR_MAC])
2844 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2845
2846 if (key.type == -1) {
2847 if (mac_addr)
2848 key.type = NL80211_KEYTYPE_PAIRWISE;
2849 else
2850 key.type = NL80211_KEYTYPE_GROUP;
2851 }
2852
2853 /* for now */
2854 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2855 key.type != NL80211_KEYTYPE_GROUP)
2856 return -EINVAL;
2857
2858 if (!rdev->ops->del_key)
2859 return -EOPNOTSUPP;
2860
2861 wdev_lock(dev->ieee80211_ptr);
2862 err = nl80211_key_allowed(dev->ieee80211_ptr);
2863
2864 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2865 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2866 err = -ENOENT;
2867
2868 if (!err)
2869 err = rdev_del_key(rdev, dev, key.idx,
2870 key.type == NL80211_KEYTYPE_PAIRWISE,
2871 mac_addr);
2872
2873 #ifdef CONFIG_CFG80211_WEXT
2874 if (!err) {
2875 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2876 dev->ieee80211_ptr->wext.default_key = -1;
2877 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2878 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2879 }
2880 #endif
2881 wdev_unlock(dev->ieee80211_ptr);
2882
2883 return err;
2884 }
2885
2886 /* This function returns an error or the number of nested attributes */
2887 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2888 {
2889 struct nlattr *attr;
2890 int n_entries = 0, tmp;
2891
2892 nla_for_each_nested(attr, nl_attr, tmp) {
2893 if (nla_len(attr) != ETH_ALEN)
2894 return -EINVAL;
2895
2896 n_entries++;
2897 }
2898
2899 return n_entries;
2900 }
2901
2902 /*
2903 * This function parses ACL information and allocates memory for ACL data.
2904 * On successful return, the calling function is responsible to free the
2905 * ACL buffer returned by this function.
2906 */
2907 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2908 struct genl_info *info)
2909 {
2910 enum nl80211_acl_policy acl_policy;
2911 struct nlattr *attr;
2912 struct cfg80211_acl_data *acl;
2913 int i = 0, n_entries, tmp;
2914
2915 if (!wiphy->max_acl_mac_addrs)
2916 return ERR_PTR(-EOPNOTSUPP);
2917
2918 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2919 return ERR_PTR(-EINVAL);
2920
2921 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2922 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2923 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2924 return ERR_PTR(-EINVAL);
2925
2926 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2927 return ERR_PTR(-EINVAL);
2928
2929 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2930 if (n_entries < 0)
2931 return ERR_PTR(n_entries);
2932
2933 if (n_entries > wiphy->max_acl_mac_addrs)
2934 return ERR_PTR(-ENOTSUPP);
2935
2936 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2937 GFP_KERNEL);
2938 if (!acl)
2939 return ERR_PTR(-ENOMEM);
2940
2941 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2942 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2943 i++;
2944 }
2945
2946 acl->n_acl_entries = n_entries;
2947 acl->acl_policy = acl_policy;
2948
2949 return acl;
2950 }
2951
2952 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2953 {
2954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2955 struct net_device *dev = info->user_ptr[1];
2956 struct cfg80211_acl_data *acl;
2957 int err;
2958
2959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2961 return -EOPNOTSUPP;
2962
2963 if (!dev->ieee80211_ptr->beacon_interval)
2964 return -EINVAL;
2965
2966 acl = parse_acl_data(&rdev->wiphy, info);
2967 if (IS_ERR(acl))
2968 return PTR_ERR(acl);
2969
2970 err = rdev_set_mac_acl(rdev, dev, acl);
2971
2972 kfree(acl);
2973
2974 return err;
2975 }
2976
2977 static int nl80211_parse_beacon(struct genl_info *info,
2978 struct cfg80211_beacon_data *bcn)
2979 {
2980 bool haveinfo = false;
2981
2982 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2983 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2984 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2985 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2986 return -EINVAL;
2987
2988 memset(bcn, 0, sizeof(*bcn));
2989
2990 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2991 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2992 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2993 if (!bcn->head_len)
2994 return -EINVAL;
2995 haveinfo = true;
2996 }
2997
2998 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2999 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
3000 bcn->tail_len =
3001 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
3002 haveinfo = true;
3003 }
3004
3005 if (!haveinfo)
3006 return -EINVAL;
3007
3008 if (info->attrs[NL80211_ATTR_IE]) {
3009 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
3010 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3011 }
3012
3013 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3014 bcn->proberesp_ies =
3015 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3016 bcn->proberesp_ies_len =
3017 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3018 }
3019
3020 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3021 bcn->assocresp_ies =
3022 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3023 bcn->assocresp_ies_len =
3024 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3025 }
3026
3027 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
3028 bcn->probe_resp =
3029 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
3030 bcn->probe_resp_len =
3031 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
3032 }
3033
3034 return 0;
3035 }
3036
3037 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3038 struct cfg80211_ap_settings *params)
3039 {
3040 struct wireless_dev *wdev;
3041 bool ret = false;
3042
3043 mutex_lock(&rdev->devlist_mtx);
3044
3045 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3046 if (wdev->iftype != NL80211_IFTYPE_AP &&
3047 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3048 continue;
3049
3050 if (!wdev->preset_chandef.chan)
3051 continue;
3052
3053 params->chandef = wdev->preset_chandef;
3054 ret = true;
3055 break;
3056 }
3057
3058 mutex_unlock(&rdev->devlist_mtx);
3059
3060 return ret;
3061 }
3062
3063 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3064 enum nl80211_auth_type auth_type,
3065 enum nl80211_commands cmd)
3066 {
3067 if (auth_type > NL80211_AUTHTYPE_MAX)
3068 return false;
3069
3070 switch (cmd) {
3071 case NL80211_CMD_AUTHENTICATE:
3072 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3073 auth_type == NL80211_AUTHTYPE_SAE)
3074 return false;
3075 return true;
3076 case NL80211_CMD_CONNECT:
3077 case NL80211_CMD_START_AP:
3078 /* SAE not supported yet */
3079 if (auth_type == NL80211_AUTHTYPE_SAE)
3080 return false;
3081 return true;
3082 default:
3083 return false;
3084 }
3085 }
3086
3087 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3088 {
3089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3090 struct net_device *dev = info->user_ptr[1];
3091 struct wireless_dev *wdev = dev->ieee80211_ptr;
3092 struct cfg80211_ap_settings params;
3093 int err;
3094 u8 radar_detect_width = 0;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3098 return -EOPNOTSUPP;
3099
3100 if (!rdev->ops->start_ap)
3101 return -EOPNOTSUPP;
3102
3103 if (wdev->beacon_interval)
3104 return -EALREADY;
3105
3106 memset(&params, 0, sizeof(params));
3107
3108 /* these are required for START_AP */
3109 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3110 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3111 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3112 return -EINVAL;
3113
3114 err = nl80211_parse_beacon(info, &params.beacon);
3115 if (err)
3116 return err;
3117
3118 params.beacon_interval =
3119 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3120 params.dtim_period =
3121 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3122
3123 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3124 if (err)
3125 return err;
3126
3127 /*
3128 * In theory, some of these attributes should be required here
3129 * but since they were not used when the command was originally
3130 * added, keep them optional for old user space programs to let
3131 * them continue to work with drivers that do not need the
3132 * additional information -- drivers must check!
3133 */
3134 if (info->attrs[NL80211_ATTR_SSID]) {
3135 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3136 params.ssid_len =
3137 nla_len(info->attrs[NL80211_ATTR_SSID]);
3138 if (params.ssid_len == 0 ||
3139 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3140 return -EINVAL;
3141 }
3142
3143 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3144 params.hidden_ssid = nla_get_u32(
3145 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3146 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3147 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3148 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3149 return -EINVAL;
3150 }
3151
3152 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3153
3154 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3155 params.auth_type = nla_get_u32(
3156 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3157 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3158 NL80211_CMD_START_AP))
3159 return -EINVAL;
3160 } else
3161 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3162
3163 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3164 NL80211_MAX_NR_CIPHER_SUITES);
3165 if (err)
3166 return err;
3167
3168 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3169 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3170 return -EOPNOTSUPP;
3171 params.inactivity_timeout = nla_get_u16(
3172 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3173 }
3174
3175 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3176 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3177 return -EINVAL;
3178 params.p2p_ctwindow =
3179 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3180 if (params.p2p_ctwindow > 127)
3181 return -EINVAL;
3182 if (params.p2p_ctwindow != 0 &&
3183 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3184 return -EINVAL;
3185 }
3186
3187 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3188 u8 tmp;
3189
3190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3191 return -EINVAL;
3192 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3193 if (tmp > 1)
3194 return -EINVAL;
3195 params.p2p_opp_ps = tmp;
3196 if (params.p2p_opp_ps != 0 &&
3197 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3198 return -EINVAL;
3199 }
3200
3201 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3202 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3203 if (err)
3204 return err;
3205 } else if (wdev->preset_chandef.chan) {
3206 params.chandef = wdev->preset_chandef;
3207 } else if (!nl80211_get_ap_channel(rdev, &params))
3208 return -EINVAL;
3209
3210 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3211 return -EINVAL;
3212
3213 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3214 if (err < 0)
3215 return err;
3216 if (err) {
3217 radar_detect_width = BIT(params.chandef.width);
3218 params.radar_required = true;
3219 }
3220
3221 mutex_lock(&rdev->devlist_mtx);
3222 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3223 params.chandef.chan,
3224 CHAN_MODE_SHARED,
3225 radar_detect_width);
3226 mutex_unlock(&rdev->devlist_mtx);
3227
3228 if (err)
3229 return err;
3230
3231 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3232 params.acl = parse_acl_data(&rdev->wiphy, info);
3233 if (IS_ERR(params.acl))
3234 return PTR_ERR(params.acl);
3235 }
3236
3237 err = rdev_start_ap(rdev, dev, &params);
3238 if (!err) {
3239 wdev->preset_chandef = params.chandef;
3240 wdev->beacon_interval = params.beacon_interval;
3241 wdev->channel = params.chandef.chan;
3242 wdev->ssid_len = params.ssid_len;
3243 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3244 }
3245
3246 kfree(params.acl);
3247
3248 return err;
3249 }
3250
3251 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3252 {
3253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254 struct net_device *dev = info->user_ptr[1];
3255 struct wireless_dev *wdev = dev->ieee80211_ptr;
3256 struct cfg80211_beacon_data params;
3257 int err;
3258
3259 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3260 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3261 return -EOPNOTSUPP;
3262
3263 if (!rdev->ops->change_beacon)
3264 return -EOPNOTSUPP;
3265
3266 if (!wdev->beacon_interval)
3267 return -EINVAL;
3268
3269 err = nl80211_parse_beacon(info, &params);
3270 if (err)
3271 return err;
3272
3273 return rdev_change_beacon(rdev, dev, &params);
3274 }
3275
3276 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3277 {
3278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279 struct net_device *dev = info->user_ptr[1];
3280
3281 return cfg80211_stop_ap(rdev, dev);
3282 }
3283
3284 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3285 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3286 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3287 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3288 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3289 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3290 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3291 };
3292
3293 static int parse_station_flags(struct genl_info *info,
3294 enum nl80211_iftype iftype,
3295 struct station_parameters *params)
3296 {
3297 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3298 struct nlattr *nla;
3299 int flag;
3300
3301 /*
3302 * Try parsing the new attribute first so userspace
3303 * can specify both for older kernels.
3304 */
3305 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3306 if (nla) {
3307 struct nl80211_sta_flag_update *sta_flags;
3308
3309 sta_flags = nla_data(nla);
3310 params->sta_flags_mask = sta_flags->mask;
3311 params->sta_flags_set = sta_flags->set;
3312 params->sta_flags_set &= params->sta_flags_mask;
3313 if ((params->sta_flags_mask |
3314 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3315 return -EINVAL;
3316 return 0;
3317 }
3318
3319 /* if present, parse the old attribute */
3320
3321 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3322 if (!nla)
3323 return 0;
3324
3325 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3326 nla, sta_flags_policy))
3327 return -EINVAL;
3328
3329 /*
3330 * Only allow certain flags for interface types so that
3331 * other attributes are silently ignored. Remember that
3332 * this is backward compatibility code with old userspace
3333 * and shouldn't be hit in other cases anyway.
3334 */
3335 switch (iftype) {
3336 case NL80211_IFTYPE_AP:
3337 case NL80211_IFTYPE_AP_VLAN:
3338 case NL80211_IFTYPE_P2P_GO:
3339 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3340 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3341 BIT(NL80211_STA_FLAG_WME) |
3342 BIT(NL80211_STA_FLAG_MFP);
3343 break;
3344 case NL80211_IFTYPE_P2P_CLIENT:
3345 case NL80211_IFTYPE_STATION:
3346 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3347 BIT(NL80211_STA_FLAG_TDLS_PEER);
3348 break;
3349 case NL80211_IFTYPE_MESH_POINT:
3350 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3351 BIT(NL80211_STA_FLAG_MFP) |
3352 BIT(NL80211_STA_FLAG_AUTHORIZED);
3353 default:
3354 return -EINVAL;
3355 }
3356
3357 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3358 if (flags[flag]) {
3359 params->sta_flags_set |= (1<<flag);
3360
3361 /* no longer support new API additions in old API */
3362 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3363 return -EINVAL;
3364 }
3365 }
3366
3367 return 0;
3368 }
3369
3370 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3371 int attr)
3372 {
3373 struct nlattr *rate;
3374 u32 bitrate;
3375 u16 bitrate_compat;
3376
3377 rate = nla_nest_start(msg, attr);
3378 if (!rate)
3379 return false;
3380
3381 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3382 bitrate = cfg80211_calculate_bitrate(info);
3383 /* report 16-bit bitrate only if we can */
3384 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3385 if (bitrate > 0 &&
3386 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3387 return false;
3388 if (bitrate_compat > 0 &&
3389 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3390 return false;
3391
3392 if (info->flags & RATE_INFO_FLAGS_MCS) {
3393 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3394 return false;
3395 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3396 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3397 return false;
3398 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3399 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3400 return false;
3401 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3402 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3403 return false;
3404 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3405 return false;
3406 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3407 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3408 return false;
3409 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3410 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3411 return false;
3412 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3413 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3414 return false;
3415 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3416 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3417 return false;
3418 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3419 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3420 return false;
3421 }
3422
3423 nla_nest_end(msg, rate);
3424 return true;
3425 }
3426
3427 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3428 int flags,
3429 struct cfg80211_registered_device *rdev,
3430 struct net_device *dev,
3431 const u8 *mac_addr, struct station_info *sinfo)
3432 {
3433 void *hdr;
3434 struct nlattr *sinfoattr, *bss_param;
3435
3436 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3437 if (!hdr)
3438 return -1;
3439
3440 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3442 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3443 goto nla_put_failure;
3444
3445 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3446 if (!sinfoattr)
3447 goto nla_put_failure;
3448 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3449 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3450 sinfo->connected_time))
3451 goto nla_put_failure;
3452 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3453 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3454 sinfo->inactive_time))
3455 goto nla_put_failure;
3456 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3457 STATION_INFO_RX_BYTES64)) &&
3458 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3459 (u32)sinfo->rx_bytes))
3460 goto nla_put_failure;
3461 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3462 STATION_INFO_TX_BYTES64)) &&
3463 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3464 (u32)sinfo->tx_bytes))
3465 goto nla_put_failure;
3466 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3467 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3468 sinfo->rx_bytes))
3469 goto nla_put_failure;
3470 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3471 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3472 sinfo->tx_bytes))
3473 goto nla_put_failure;
3474 if ((sinfo->filled & STATION_INFO_LLID) &&
3475 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3476 goto nla_put_failure;
3477 if ((sinfo->filled & STATION_INFO_PLID) &&
3478 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3479 goto nla_put_failure;
3480 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3481 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3482 sinfo->plink_state))
3483 goto nla_put_failure;
3484 switch (rdev->wiphy.signal_type) {
3485 case CFG80211_SIGNAL_TYPE_MBM:
3486 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3487 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3488 sinfo->signal))
3489 goto nla_put_failure;
3490 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3491 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3492 sinfo->signal_avg))
3493 goto nla_put_failure;
3494 break;
3495 default:
3496 break;
3497 }
3498 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3499 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3500 NL80211_STA_INFO_TX_BITRATE))
3501 goto nla_put_failure;
3502 }
3503 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3504 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3505 NL80211_STA_INFO_RX_BITRATE))
3506 goto nla_put_failure;
3507 }
3508 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3509 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3510 sinfo->rx_packets))
3511 goto nla_put_failure;
3512 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3513 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3514 sinfo->tx_packets))
3515 goto nla_put_failure;
3516 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3517 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3518 sinfo->tx_retries))
3519 goto nla_put_failure;
3520 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3521 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3522 sinfo->tx_failed))
3523 goto nla_put_failure;
3524 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3525 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3526 sinfo->beacon_loss_count))
3527 goto nla_put_failure;
3528 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3529 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3530 sinfo->local_pm))
3531 goto nla_put_failure;
3532 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3533 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3534 sinfo->peer_pm))
3535 goto nla_put_failure;
3536 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3537 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3538 sinfo->nonpeer_pm))
3539 goto nla_put_failure;
3540 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3541 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3542 if (!bss_param)
3543 goto nla_put_failure;
3544
3545 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3546 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3547 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3548 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3549 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3550 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3551 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3552 sinfo->bss_param.dtim_period) ||
3553 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3554 sinfo->bss_param.beacon_interval))
3555 goto nla_put_failure;
3556
3557 nla_nest_end(msg, bss_param);
3558 }
3559 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3560 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3561 sizeof(struct nl80211_sta_flag_update),
3562 &sinfo->sta_flags))
3563 goto nla_put_failure;
3564 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3565 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3566 sinfo->t_offset))
3567 goto nla_put_failure;
3568 nla_nest_end(msg, sinfoattr);
3569
3570 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3571 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3572 sinfo->assoc_req_ies))
3573 goto nla_put_failure;
3574
3575 return genlmsg_end(msg, hdr);
3576
3577 nla_put_failure:
3578 genlmsg_cancel(msg, hdr);
3579 return -EMSGSIZE;
3580 }
3581
3582 static int nl80211_dump_station(struct sk_buff *skb,
3583 struct netlink_callback *cb)
3584 {
3585 struct station_info sinfo;
3586 struct cfg80211_registered_device *dev;
3587 struct wireless_dev *wdev;
3588 u8 mac_addr[ETH_ALEN];
3589 int sta_idx = cb->args[2];
3590 int err;
3591
3592 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3593 if (err)
3594 return err;
3595
3596 if (!wdev->netdev) {
3597 err = -EINVAL;
3598 goto out_err;
3599 }
3600
3601 if (!dev->ops->dump_station) {
3602 err = -EOPNOTSUPP;
3603 goto out_err;
3604 }
3605
3606 while (1) {
3607 memset(&sinfo, 0, sizeof(sinfo));
3608 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3609 mac_addr, &sinfo);
3610 if (err == -ENOENT)
3611 break;
3612 if (err)
3613 goto out_err;
3614
3615 if (nl80211_send_station(skb,
3616 NETLINK_CB(cb->skb).portid,
3617 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3618 dev, wdev->netdev, mac_addr,
3619 &sinfo) < 0)
3620 goto out;
3621
3622 sta_idx++;
3623 }
3624
3625
3626 out:
3627 cb->args[2] = sta_idx;
3628 err = skb->len;
3629 out_err:
3630 nl80211_finish_wdev_dump(dev);
3631
3632 return err;
3633 }
3634
3635 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3636 {
3637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3638 struct net_device *dev = info->user_ptr[1];
3639 struct station_info sinfo;
3640 struct sk_buff *msg;
3641 u8 *mac_addr = NULL;
3642 int err;
3643
3644 memset(&sinfo, 0, sizeof(sinfo));
3645
3646 if (!info->attrs[NL80211_ATTR_MAC])
3647 return -EINVAL;
3648
3649 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3650
3651 if (!rdev->ops->get_station)
3652 return -EOPNOTSUPP;
3653
3654 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3655 if (err)
3656 return err;
3657
3658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3659 if (!msg)
3660 return -ENOMEM;
3661
3662 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3663 rdev, dev, mac_addr, &sinfo) < 0) {
3664 nlmsg_free(msg);
3665 return -ENOBUFS;
3666 }
3667
3668 return genlmsg_reply(msg, info);
3669 }
3670
3671 int cfg80211_check_station_change(struct wiphy *wiphy,
3672 struct station_parameters *params,
3673 enum cfg80211_station_type statype)
3674 {
3675 if (params->listen_interval != -1)
3676 return -EINVAL;
3677 if (params->aid)
3678 return -EINVAL;
3679
3680 /* When you run into this, adjust the code below for the new flag */
3681 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3682
3683 switch (statype) {
3684 case CFG80211_STA_MESH_PEER_KERNEL:
3685 case CFG80211_STA_MESH_PEER_USER:
3686 /*
3687 * No ignoring the TDLS flag here -- the userspace mesh
3688 * code doesn't have the bug of including TDLS in the
3689 * mask everywhere.
3690 */
3691 if (params->sta_flags_mask &
3692 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3693 BIT(NL80211_STA_FLAG_MFP) |
3694 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3695 return -EINVAL;
3696 break;
3697 case CFG80211_STA_TDLS_PEER_SETUP:
3698 case CFG80211_STA_TDLS_PEER_ACTIVE:
3699 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3700 return -EINVAL;
3701 /* ignore since it can't change */
3702 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3703 break;
3704 default:
3705 /* disallow mesh-specific things */
3706 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3707 return -EINVAL;
3708 if (params->local_pm)
3709 return -EINVAL;
3710 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3711 return -EINVAL;
3712 }
3713
3714 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3715 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3716 /* TDLS can't be set, ... */
3717 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3718 return -EINVAL;
3719 /*
3720 * ... but don't bother the driver with it. This works around
3721 * a hostapd/wpa_supplicant issue -- it always includes the
3722 * TLDS_PEER flag in the mask even for AP mode.
3723 */
3724 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3725 }
3726
3727 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3728 /* reject other things that can't change */
3729 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3730 return -EINVAL;
3731 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3732 return -EINVAL;
3733 if (params->supported_rates)
3734 return -EINVAL;
3735 if (params->ext_capab || params->ht_capa || params->vht_capa)
3736 return -EINVAL;
3737 }
3738
3739 if (statype != CFG80211_STA_AP_CLIENT) {
3740 if (params->vlan)
3741 return -EINVAL;
3742 }
3743
3744 switch (statype) {
3745 case CFG80211_STA_AP_MLME_CLIENT:
3746 /* Use this only for authorizing/unauthorizing a station */
3747 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3748 return -EOPNOTSUPP;
3749 break;
3750 case CFG80211_STA_AP_CLIENT:
3751 /* accept only the listed bits */
3752 if (params->sta_flags_mask &
3753 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3754 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3755 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3756 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3757 BIT(NL80211_STA_FLAG_WME) |
3758 BIT(NL80211_STA_FLAG_MFP)))
3759 return -EINVAL;
3760
3761 /* but authenticated/associated only if driver handles it */
3762 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3763 params->sta_flags_mask &
3764 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3765 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3766 return -EINVAL;
3767 break;
3768 case CFG80211_STA_IBSS:
3769 case CFG80211_STA_AP_STA:
3770 /* reject any changes other than AUTHORIZED */
3771 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3772 return -EINVAL;
3773 break;
3774 case CFG80211_STA_TDLS_PEER_SETUP:
3775 /* reject any changes other than AUTHORIZED or WME */
3776 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3777 BIT(NL80211_STA_FLAG_WME)))
3778 return -EINVAL;
3779 /* force (at least) rates when authorizing */
3780 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3781 !params->supported_rates)
3782 return -EINVAL;
3783 break;
3784 case CFG80211_STA_TDLS_PEER_ACTIVE:
3785 /* reject any changes */
3786 return -EINVAL;
3787 case CFG80211_STA_MESH_PEER_KERNEL:
3788 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3789 return -EINVAL;
3790 break;
3791 case CFG80211_STA_MESH_PEER_USER:
3792 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3793 return -EINVAL;
3794 break;
3795 }
3796
3797 return 0;
3798 }
3799 EXPORT_SYMBOL(cfg80211_check_station_change);
3800
3801 /*
3802 * Get vlan interface making sure it is running and on the right wiphy.
3803 */
3804 static struct net_device *get_vlan(struct genl_info *info,
3805 struct cfg80211_registered_device *rdev)
3806 {
3807 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3808 struct net_device *v;
3809 int ret;
3810
3811 if (!vlanattr)
3812 return NULL;
3813
3814 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3815 if (!v)
3816 return ERR_PTR(-ENODEV);
3817
3818 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3819 ret = -EINVAL;
3820 goto error;
3821 }
3822
3823 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3824 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3825 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3826 ret = -EINVAL;
3827 goto error;
3828 }
3829
3830 if (!netif_running(v)) {
3831 ret = -ENETDOWN;
3832 goto error;
3833 }
3834
3835 return v;
3836 error:
3837 dev_put(v);
3838 return ERR_PTR(ret);
3839 }
3840
3841 static struct nla_policy
3842 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3843 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3844 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3845 };
3846
3847 static int nl80211_parse_sta_wme(struct genl_info *info,
3848 struct station_parameters *params)
3849 {
3850 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3851 struct nlattr *nla;
3852 int err;
3853
3854 /* parse WME attributes if present */
3855 if (!info->attrs[NL80211_ATTR_STA_WME])
3856 return 0;
3857
3858 nla = info->attrs[NL80211_ATTR_STA_WME];
3859 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3860 nl80211_sta_wme_policy);
3861 if (err)
3862 return err;
3863
3864 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3865 params->uapsd_queues = nla_get_u8(
3866 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3867 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3868 return -EINVAL;
3869
3870 if (tb[NL80211_STA_WME_MAX_SP])
3871 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3872
3873 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3874 return -EINVAL;
3875
3876 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3877
3878 return 0;
3879 }
3880
3881 static int nl80211_set_station_tdls(struct genl_info *info,
3882 struct station_parameters *params)
3883 {
3884 /* Dummy STA entry gets updated once the peer capabilities are known */
3885 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3886 params->ht_capa =
3887 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3888 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3889 params->vht_capa =
3890 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3891
3892 return nl80211_parse_sta_wme(info, params);
3893 }
3894
3895 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3896 {
3897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3898 struct net_device *dev = info->user_ptr[1];
3899 struct station_parameters params;
3900 u8 *mac_addr;
3901 int err;
3902
3903 memset(&params, 0, sizeof(params));
3904
3905 params.listen_interval = -1;
3906
3907 if (!rdev->ops->change_station)
3908 return -EOPNOTSUPP;
3909
3910 if (info->attrs[NL80211_ATTR_STA_AID])
3911 return -EINVAL;
3912
3913 if (!info->attrs[NL80211_ATTR_MAC])
3914 return -EINVAL;
3915
3916 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3917
3918 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3919 params.supported_rates =
3920 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3921 params.supported_rates_len =
3922 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3923 }
3924
3925 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3926 params.capability =
3927 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3928 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3929 }
3930
3931 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3932 params.ext_capab =
3933 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3934 params.ext_capab_len =
3935 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3936 }
3937
3938 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3939 return -EINVAL;
3940
3941 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3942 return -EINVAL;
3943
3944 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3945 params.plink_action =
3946 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3947 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3948 return -EINVAL;
3949 }
3950
3951 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3952 params.plink_state =
3953 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3954 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3955 return -EINVAL;
3956 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3957 }
3958
3959 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3960 enum nl80211_mesh_power_mode pm = nla_get_u32(
3961 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3962
3963 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3964 pm > NL80211_MESH_POWER_MAX)
3965 return -EINVAL;
3966
3967 params.local_pm = pm;
3968 }
3969
3970 /* Include parameters for TDLS peer (will check later) */
3971 err = nl80211_set_station_tdls(info, &params);
3972 if (err)
3973 return err;
3974
3975 params.vlan = get_vlan(info, rdev);
3976 if (IS_ERR(params.vlan))
3977 return PTR_ERR(params.vlan);
3978
3979 switch (dev->ieee80211_ptr->iftype) {
3980 case NL80211_IFTYPE_AP:
3981 case NL80211_IFTYPE_AP_VLAN:
3982 case NL80211_IFTYPE_P2P_GO:
3983 case NL80211_IFTYPE_P2P_CLIENT:
3984 case NL80211_IFTYPE_STATION:
3985 case NL80211_IFTYPE_ADHOC:
3986 case NL80211_IFTYPE_MESH_POINT:
3987 break;
3988 default:
3989 err = -EOPNOTSUPP;
3990 goto out_put_vlan;
3991 }
3992
3993 /* driver will call cfg80211_check_station_change() */
3994 err = rdev_change_station(rdev, dev, mac_addr, &params);
3995
3996 out_put_vlan:
3997 if (params.vlan)
3998 dev_put(params.vlan);
3999
4000 return err;
4001 }
4002
4003 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4004 {
4005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4006 int err;
4007 struct net_device *dev = info->user_ptr[1];
4008 struct station_parameters params;
4009 u8 *mac_addr = NULL;
4010
4011 memset(&params, 0, sizeof(params));
4012
4013 if (!rdev->ops->add_station)
4014 return -EOPNOTSUPP;
4015
4016 if (!info->attrs[NL80211_ATTR_MAC])
4017 return -EINVAL;
4018
4019 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4020 return -EINVAL;
4021
4022 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4023 return -EINVAL;
4024
4025 if (!info->attrs[NL80211_ATTR_STA_AID])
4026 return -EINVAL;
4027
4028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4029 params.supported_rates =
4030 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4031 params.supported_rates_len =
4032 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4033 params.listen_interval =
4034 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4035
4036 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4037 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4038 return -EINVAL;
4039
4040 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4041 params.capability =
4042 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4043 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4044 }
4045
4046 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4047 params.ext_capab =
4048 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4049 params.ext_capab_len =
4050 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4051 }
4052
4053 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4054 params.ht_capa =
4055 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4056
4057 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4058 params.vht_capa =
4059 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4060
4061 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4062 params.plink_action =
4063 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4064 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4065 return -EINVAL;
4066 }
4067
4068 err = nl80211_parse_sta_wme(info, &params);
4069 if (err)
4070 return err;
4071
4072 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4073 return -EINVAL;
4074
4075 /* When you run into this, adjust the code below for the new flag */
4076 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4077
4078 switch (dev->ieee80211_ptr->iftype) {
4079 case NL80211_IFTYPE_AP:
4080 case NL80211_IFTYPE_AP_VLAN:
4081 case NL80211_IFTYPE_P2P_GO:
4082 /* ignore WME attributes if iface/sta is not capable */
4083 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4084 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4085 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4086
4087 /* TDLS peers cannot be added */
4088 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4089 return -EINVAL;
4090 /* but don't bother the driver with it */
4091 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4092
4093 /* allow authenticated/associated only if driver handles it */
4094 if (!(rdev->wiphy.features &
4095 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4096 params.sta_flags_mask &
4097 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4098 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4099 return -EINVAL;
4100
4101 /* must be last in here for error handling */
4102 params.vlan = get_vlan(info, rdev);
4103 if (IS_ERR(params.vlan))
4104 return PTR_ERR(params.vlan);
4105 break;
4106 case NL80211_IFTYPE_MESH_POINT:
4107 /* ignore uAPSD data */
4108 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4109
4110 /* associated is disallowed */
4111 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4112 return -EINVAL;
4113 /* TDLS peers cannot be added */
4114 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4115 return -EINVAL;
4116 break;
4117 case NL80211_IFTYPE_STATION:
4118 case NL80211_IFTYPE_P2P_CLIENT:
4119 /* ignore uAPSD data */
4120 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4121
4122 /* these are disallowed */
4123 if (params.sta_flags_mask &
4124 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4125 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4126 return -EINVAL;
4127 /* Only TDLS peers can be added */
4128 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4129 return -EINVAL;
4130 /* Can only add if TDLS ... */
4131 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4132 return -EOPNOTSUPP;
4133 /* ... with external setup is supported */
4134 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4135 return -EOPNOTSUPP;
4136 /*
4137 * Older wpa_supplicant versions always mark the TDLS peer
4138 * as authorized, but it shouldn't yet be.
4139 */
4140 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4141 break;
4142 default:
4143 return -EOPNOTSUPP;
4144 }
4145
4146 /* be aware of params.vlan when changing code here */
4147
4148 err = rdev_add_station(rdev, dev, mac_addr, &params);
4149
4150 if (params.vlan)
4151 dev_put(params.vlan);
4152 return err;
4153 }
4154
4155 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4156 {
4157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4158 struct net_device *dev = info->user_ptr[1];
4159 u8 *mac_addr = NULL;
4160
4161 if (info->attrs[NL80211_ATTR_MAC])
4162 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4163
4164 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4165 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4166 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4167 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4168 return -EINVAL;
4169
4170 if (!rdev->ops->del_station)
4171 return -EOPNOTSUPP;
4172
4173 return rdev_del_station(rdev, dev, mac_addr);
4174 }
4175
4176 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4177 int flags, struct net_device *dev,
4178 u8 *dst, u8 *next_hop,
4179 struct mpath_info *pinfo)
4180 {
4181 void *hdr;
4182 struct nlattr *pinfoattr;
4183
4184 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4185 if (!hdr)
4186 return -1;
4187
4188 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4189 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4190 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4191 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4192 goto nla_put_failure;
4193
4194 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4195 if (!pinfoattr)
4196 goto nla_put_failure;
4197 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4198 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4199 pinfo->frame_qlen))
4200 goto nla_put_failure;
4201 if (((pinfo->filled & MPATH_INFO_SN) &&
4202 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4203 ((pinfo->filled & MPATH_INFO_METRIC) &&
4204 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4205 pinfo->metric)) ||
4206 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4207 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4208 pinfo->exptime)) ||
4209 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4210 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4211 pinfo->flags)) ||
4212 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4213 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4214 pinfo->discovery_timeout)) ||
4215 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4216 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4217 pinfo->discovery_retries)))
4218 goto nla_put_failure;
4219
4220 nla_nest_end(msg, pinfoattr);
4221
4222 return genlmsg_end(msg, hdr);
4223
4224 nla_put_failure:
4225 genlmsg_cancel(msg, hdr);
4226 return -EMSGSIZE;
4227 }
4228
4229 static int nl80211_dump_mpath(struct sk_buff *skb,
4230 struct netlink_callback *cb)
4231 {
4232 struct mpath_info pinfo;
4233 struct cfg80211_registered_device *dev;
4234 struct wireless_dev *wdev;
4235 u8 dst[ETH_ALEN];
4236 u8 next_hop[ETH_ALEN];
4237 int path_idx = cb->args[2];
4238 int err;
4239
4240 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4241 if (err)
4242 return err;
4243
4244 if (!dev->ops->dump_mpath) {
4245 err = -EOPNOTSUPP;
4246 goto out_err;
4247 }
4248
4249 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4250 err = -EOPNOTSUPP;
4251 goto out_err;
4252 }
4253
4254 while (1) {
4255 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4256 next_hop, &pinfo);
4257 if (err == -ENOENT)
4258 break;
4259 if (err)
4260 goto out_err;
4261
4262 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4263 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4264 wdev->netdev, dst, next_hop,
4265 &pinfo) < 0)
4266 goto out;
4267
4268 path_idx++;
4269 }
4270
4271
4272 out:
4273 cb->args[2] = path_idx;
4274 err = skb->len;
4275 out_err:
4276 nl80211_finish_wdev_dump(dev);
4277 return err;
4278 }
4279
4280 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4281 {
4282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4283 int err;
4284 struct net_device *dev = info->user_ptr[1];
4285 struct mpath_info pinfo;
4286 struct sk_buff *msg;
4287 u8 *dst = NULL;
4288 u8 next_hop[ETH_ALEN];
4289
4290 memset(&pinfo, 0, sizeof(pinfo));
4291
4292 if (!info->attrs[NL80211_ATTR_MAC])
4293 return -EINVAL;
4294
4295 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4296
4297 if (!rdev->ops->get_mpath)
4298 return -EOPNOTSUPP;
4299
4300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4301 return -EOPNOTSUPP;
4302
4303 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4304 if (err)
4305 return err;
4306
4307 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4308 if (!msg)
4309 return -ENOMEM;
4310
4311 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4312 dev, dst, next_hop, &pinfo) < 0) {
4313 nlmsg_free(msg);
4314 return -ENOBUFS;
4315 }
4316
4317 return genlmsg_reply(msg, info);
4318 }
4319
4320 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4321 {
4322 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4323 struct net_device *dev = info->user_ptr[1];
4324 u8 *dst = NULL;
4325 u8 *next_hop = NULL;
4326
4327 if (!info->attrs[NL80211_ATTR_MAC])
4328 return -EINVAL;
4329
4330 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4331 return -EINVAL;
4332
4333 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4334 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4335
4336 if (!rdev->ops->change_mpath)
4337 return -EOPNOTSUPP;
4338
4339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4340 return -EOPNOTSUPP;
4341
4342 return rdev_change_mpath(rdev, dev, dst, next_hop);
4343 }
4344
4345 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4346 {
4347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4348 struct net_device *dev = info->user_ptr[1];
4349 u8 *dst = NULL;
4350 u8 *next_hop = NULL;
4351
4352 if (!info->attrs[NL80211_ATTR_MAC])
4353 return -EINVAL;
4354
4355 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4356 return -EINVAL;
4357
4358 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4359 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4360
4361 if (!rdev->ops->add_mpath)
4362 return -EOPNOTSUPP;
4363
4364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4365 return -EOPNOTSUPP;
4366
4367 return rdev_add_mpath(rdev, dev, dst, next_hop);
4368 }
4369
4370 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4371 {
4372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373 struct net_device *dev = info->user_ptr[1];
4374 u8 *dst = NULL;
4375
4376 if (info->attrs[NL80211_ATTR_MAC])
4377 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4378
4379 if (!rdev->ops->del_mpath)
4380 return -EOPNOTSUPP;
4381
4382 return rdev_del_mpath(rdev, dev, dst);
4383 }
4384
4385 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4386 {
4387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4388 struct net_device *dev = info->user_ptr[1];
4389 struct bss_parameters params;
4390
4391 memset(&params, 0, sizeof(params));
4392 /* default to not changing parameters */
4393 params.use_cts_prot = -1;
4394 params.use_short_preamble = -1;
4395 params.use_short_slot_time = -1;
4396 params.ap_isolate = -1;
4397 params.ht_opmode = -1;
4398 params.p2p_ctwindow = -1;
4399 params.p2p_opp_ps = -1;
4400
4401 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4402 params.use_cts_prot =
4403 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4404 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4405 params.use_short_preamble =
4406 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4407 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4408 params.use_short_slot_time =
4409 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4410 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4411 params.basic_rates =
4412 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4413 params.basic_rates_len =
4414 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4415 }
4416 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4417 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4418 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4419 params.ht_opmode =
4420 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4421
4422 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4423 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4424 return -EINVAL;
4425 params.p2p_ctwindow =
4426 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4427 if (params.p2p_ctwindow < 0)
4428 return -EINVAL;
4429 if (params.p2p_ctwindow != 0 &&
4430 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4431 return -EINVAL;
4432 }
4433
4434 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4435 u8 tmp;
4436
4437 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4438 return -EINVAL;
4439 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4440 if (tmp > 1)
4441 return -EINVAL;
4442 params.p2p_opp_ps = tmp;
4443 if (params.p2p_opp_ps &&
4444 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4445 return -EINVAL;
4446 }
4447
4448 if (!rdev->ops->change_bss)
4449 return -EOPNOTSUPP;
4450
4451 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4452 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4453 return -EOPNOTSUPP;
4454
4455 return rdev_change_bss(rdev, dev, &params);
4456 }
4457
4458 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4459 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4460 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4461 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4462 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4463 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4464 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4465 };
4466
4467 static int parse_reg_rule(struct nlattr *tb[],
4468 struct ieee80211_reg_rule *reg_rule)
4469 {
4470 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4471 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4472
4473 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4474 return -EINVAL;
4475 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4476 return -EINVAL;
4477 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4478 return -EINVAL;
4479 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4480 return -EINVAL;
4481 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4482 return -EINVAL;
4483
4484 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4485
4486 freq_range->start_freq_khz =
4487 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4488 freq_range->end_freq_khz =
4489 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4490 freq_range->max_bandwidth_khz =
4491 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4492
4493 power_rule->max_eirp =
4494 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4495
4496 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4497 power_rule->max_antenna_gain =
4498 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4499
4500 return 0;
4501 }
4502
4503 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4504 {
4505 int r;
4506 char *data = NULL;
4507 enum nl80211_user_reg_hint_type user_reg_hint_type;
4508
4509 /*
4510 * You should only get this when cfg80211 hasn't yet initialized
4511 * completely when built-in to the kernel right between the time
4512 * window between nl80211_init() and regulatory_init(), if that is
4513 * even possible.
4514 */
4515 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4516 return -EINPROGRESS;
4517
4518 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4519 return -EINVAL;
4520
4521 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4522
4523 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4524 user_reg_hint_type =
4525 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4526 else
4527 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4528
4529 switch (user_reg_hint_type) {
4530 case NL80211_USER_REG_HINT_USER:
4531 case NL80211_USER_REG_HINT_CELL_BASE:
4532 break;
4533 default:
4534 return -EINVAL;
4535 }
4536
4537 r = regulatory_hint_user(data, user_reg_hint_type);
4538
4539 return r;
4540 }
4541
4542 static int nl80211_get_mesh_config(struct sk_buff *skb,
4543 struct genl_info *info)
4544 {
4545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4546 struct net_device *dev = info->user_ptr[1];
4547 struct wireless_dev *wdev = dev->ieee80211_ptr;
4548 struct mesh_config cur_params;
4549 int err = 0;
4550 void *hdr;
4551 struct nlattr *pinfoattr;
4552 struct sk_buff *msg;
4553
4554 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4555 return -EOPNOTSUPP;
4556
4557 if (!rdev->ops->get_mesh_config)
4558 return -EOPNOTSUPP;
4559
4560 wdev_lock(wdev);
4561 /* If not connected, get default parameters */
4562 if (!wdev->mesh_id_len)
4563 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4564 else
4565 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4566 wdev_unlock(wdev);
4567
4568 if (err)
4569 return err;
4570
4571 /* Draw up a netlink message to send back */
4572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4573 if (!msg)
4574 return -ENOMEM;
4575 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4576 NL80211_CMD_GET_MESH_CONFIG);
4577 if (!hdr)
4578 goto out;
4579 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4580 if (!pinfoattr)
4581 goto nla_put_failure;
4582 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4583 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4584 cur_params.dot11MeshRetryTimeout) ||
4585 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4586 cur_params.dot11MeshConfirmTimeout) ||
4587 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4588 cur_params.dot11MeshHoldingTimeout) ||
4589 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4590 cur_params.dot11MeshMaxPeerLinks) ||
4591 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4592 cur_params.dot11MeshMaxRetries) ||
4593 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4594 cur_params.dot11MeshTTL) ||
4595 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4596 cur_params.element_ttl) ||
4597 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4598 cur_params.auto_open_plinks) ||
4599 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4600 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4601 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4602 cur_params.dot11MeshHWMPmaxPREQretries) ||
4603 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4604 cur_params.path_refresh_time) ||
4605 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4606 cur_params.min_discovery_timeout) ||
4607 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4608 cur_params.dot11MeshHWMPactivePathTimeout) ||
4609 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4610 cur_params.dot11MeshHWMPpreqMinInterval) ||
4611 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4612 cur_params.dot11MeshHWMPperrMinInterval) ||
4613 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4614 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4615 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4616 cur_params.dot11MeshHWMPRootMode) ||
4617 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4618 cur_params.dot11MeshHWMPRannInterval) ||
4619 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4620 cur_params.dot11MeshGateAnnouncementProtocol) ||
4621 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4622 cur_params.dot11MeshForwarding) ||
4623 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4624 cur_params.rssi_threshold) ||
4625 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4626 cur_params.ht_opmode) ||
4627 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4628 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4629 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4630 cur_params.dot11MeshHWMProotInterval) ||
4631 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4632 cur_params.dot11MeshHWMPconfirmationInterval) ||
4633 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4634 cur_params.power_mode) ||
4635 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4636 cur_params.dot11MeshAwakeWindowDuration))
4637 goto nla_put_failure;
4638 nla_nest_end(msg, pinfoattr);
4639 genlmsg_end(msg, hdr);
4640 return genlmsg_reply(msg, info);
4641
4642 nla_put_failure:
4643 genlmsg_cancel(msg, hdr);
4644 out:
4645 nlmsg_free(msg);
4646 return -ENOBUFS;
4647 }
4648
4649 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4650 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4651 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4652 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4653 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4654 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4655 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4656 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4657 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4658 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4659 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4660 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4661 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4662 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4663 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4664 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4665 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4666 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4667 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4668 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4669 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4670 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4671 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4672 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4673 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4674 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4675 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4676 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4677 };
4678
4679 static const struct nla_policy
4680 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4681 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4682 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4683 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4684 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4685 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4686 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4687 .len = IEEE80211_MAX_DATA_LEN },
4688 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4689 };
4690
4691 static int nl80211_parse_mesh_config(struct genl_info *info,
4692 struct mesh_config *cfg,
4693 u32 *mask_out)
4694 {
4695 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4696 u32 mask = 0;
4697
4698 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4699 do { \
4700 if (tb[attr]) { \
4701 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4702 return -EINVAL; \
4703 cfg->param = fn(tb[attr]); \
4704 mask |= (1 << (attr - 1)); \
4705 } \
4706 } while (0)
4707
4708
4709 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4710 return -EINVAL;
4711 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4712 info->attrs[NL80211_ATTR_MESH_CONFIG],
4713 nl80211_meshconf_params_policy))
4714 return -EINVAL;
4715
4716 /* This makes sure that there aren't more than 32 mesh config
4717 * parameters (otherwise our bitfield scheme would not work.) */
4718 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4719
4720 /* Fill in the params struct */
4721 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4722 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4723 nla_get_u16);
4724 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4725 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4726 nla_get_u16);
4727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4728 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4729 nla_get_u16);
4730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4731 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4732 nla_get_u16);
4733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4734 mask, NL80211_MESHCONF_MAX_RETRIES,
4735 nla_get_u8);
4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4737 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4738 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4739 mask, NL80211_MESHCONF_ELEMENT_TTL,
4740 nla_get_u8);
4741 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4742 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4743 nla_get_u8);
4744 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4745 1, 255, mask,
4746 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4747 nla_get_u32);
4748 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4749 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4750 nla_get_u8);
4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4752 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4753 nla_get_u32);
4754 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4755 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4756 nla_get_u16);
4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4758 1, 65535, mask,
4759 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4760 nla_get_u32);
4761 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4762 1, 65535, mask,
4763 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4764 nla_get_u16);
4765 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4766 1, 65535, mask,
4767 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4768 nla_get_u16);
4769 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4770 dot11MeshHWMPnetDiameterTraversalTime,
4771 1, 65535, mask,
4772 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4773 nla_get_u16);
4774 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4775 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4776 nla_get_u8);
4777 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4778 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4779 nla_get_u16);
4780 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4781 dot11MeshGateAnnouncementProtocol, 0, 1,
4782 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4783 nla_get_u8);
4784 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4785 mask, NL80211_MESHCONF_FORWARDING,
4786 nla_get_u8);
4787 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4788 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4789 nla_get_u32);
4790 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4791 mask, NL80211_MESHCONF_HT_OPMODE,
4792 nla_get_u16);
4793 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4794 1, 65535, mask,
4795 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4796 nla_get_u32);
4797 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4798 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4799 nla_get_u16);
4800 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4801 dot11MeshHWMPconfirmationInterval,
4802 1, 65535, mask,
4803 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4804 nla_get_u16);
4805 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4806 NL80211_MESH_POWER_ACTIVE,
4807 NL80211_MESH_POWER_MAX,
4808 mask, NL80211_MESHCONF_POWER_MODE,
4809 nla_get_u32);
4810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4811 0, 65535, mask,
4812 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4813 if (mask_out)
4814 *mask_out = mask;
4815
4816 return 0;
4817
4818 #undef FILL_IN_MESH_PARAM_IF_SET
4819 }
4820
4821 static int nl80211_parse_mesh_setup(struct genl_info *info,
4822 struct mesh_setup *setup)
4823 {
4824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4825 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4826
4827 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4828 return -EINVAL;
4829 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4830 info->attrs[NL80211_ATTR_MESH_SETUP],
4831 nl80211_mesh_setup_params_policy))
4832 return -EINVAL;
4833
4834 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4835 setup->sync_method =
4836 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4837 IEEE80211_SYNC_METHOD_VENDOR :
4838 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4839
4840 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4841 setup->path_sel_proto =
4842 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4843 IEEE80211_PATH_PROTOCOL_VENDOR :
4844 IEEE80211_PATH_PROTOCOL_HWMP;
4845
4846 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4847 setup->path_metric =
4848 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4849 IEEE80211_PATH_METRIC_VENDOR :
4850 IEEE80211_PATH_METRIC_AIRTIME;
4851
4852
4853 if (tb[NL80211_MESH_SETUP_IE]) {
4854 struct nlattr *ieattr =
4855 tb[NL80211_MESH_SETUP_IE];
4856 if (!is_valid_ie_attr(ieattr))
4857 return -EINVAL;
4858 setup->ie = nla_data(ieattr);
4859 setup->ie_len = nla_len(ieattr);
4860 }
4861 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4862 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4863 return -EINVAL;
4864 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4865 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4866 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4867 if (setup->is_secure)
4868 setup->user_mpm = true;
4869
4870 return 0;
4871 }
4872
4873 static int nl80211_update_mesh_config(struct sk_buff *skb,
4874 struct genl_info *info)
4875 {
4876 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4877 struct net_device *dev = info->user_ptr[1];
4878 struct wireless_dev *wdev = dev->ieee80211_ptr;
4879 struct mesh_config cfg;
4880 u32 mask;
4881 int err;
4882
4883 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4884 return -EOPNOTSUPP;
4885
4886 if (!rdev->ops->update_mesh_config)
4887 return -EOPNOTSUPP;
4888
4889 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4890 if (err)
4891 return err;
4892
4893 wdev_lock(wdev);
4894 if (!wdev->mesh_id_len)
4895 err = -ENOLINK;
4896
4897 if (!err)
4898 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4899
4900 wdev_unlock(wdev);
4901
4902 return err;
4903 }
4904
4905 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4906 {
4907 const struct ieee80211_regdomain *regdom;
4908 struct sk_buff *msg;
4909 void *hdr = NULL;
4910 struct nlattr *nl_reg_rules;
4911 unsigned int i;
4912 int err = -EINVAL;
4913
4914 mutex_lock(&cfg80211_mutex);
4915
4916 if (!cfg80211_regdomain)
4917 goto out;
4918
4919 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4920 if (!msg) {
4921 err = -ENOBUFS;
4922 goto out;
4923 }
4924
4925 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4926 NL80211_CMD_GET_REG);
4927 if (!hdr)
4928 goto put_failure;
4929
4930 if (reg_last_request_cell_base() &&
4931 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4932 NL80211_USER_REG_HINT_CELL_BASE))
4933 goto nla_put_failure;
4934
4935 rcu_read_lock();
4936 regdom = rcu_dereference(cfg80211_regdomain);
4937
4938 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4939 (regdom->dfs_region &&
4940 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4941 goto nla_put_failure_rcu;
4942
4943 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4944 if (!nl_reg_rules)
4945 goto nla_put_failure_rcu;
4946
4947 for (i = 0; i < regdom->n_reg_rules; i++) {
4948 struct nlattr *nl_reg_rule;
4949 const struct ieee80211_reg_rule *reg_rule;
4950 const struct ieee80211_freq_range *freq_range;
4951 const struct ieee80211_power_rule *power_rule;
4952
4953 reg_rule = &regdom->reg_rules[i];
4954 freq_range = &reg_rule->freq_range;
4955 power_rule = &reg_rule->power_rule;
4956
4957 nl_reg_rule = nla_nest_start(msg, i);
4958 if (!nl_reg_rule)
4959 goto nla_put_failure_rcu;
4960
4961 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4962 reg_rule->flags) ||
4963 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4964 freq_range->start_freq_khz) ||
4965 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4966 freq_range->end_freq_khz) ||
4967 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4968 freq_range->max_bandwidth_khz) ||
4969 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4970 power_rule->max_antenna_gain) ||
4971 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4972 power_rule->max_eirp))
4973 goto nla_put_failure_rcu;
4974
4975 nla_nest_end(msg, nl_reg_rule);
4976 }
4977 rcu_read_unlock();
4978
4979 nla_nest_end(msg, nl_reg_rules);
4980
4981 genlmsg_end(msg, hdr);
4982 err = genlmsg_reply(msg, info);
4983 goto out;
4984
4985 nla_put_failure_rcu:
4986 rcu_read_unlock();
4987 nla_put_failure:
4988 genlmsg_cancel(msg, hdr);
4989 put_failure:
4990 nlmsg_free(msg);
4991 err = -EMSGSIZE;
4992 out:
4993 mutex_unlock(&cfg80211_mutex);
4994 return err;
4995 }
4996
4997 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4998 {
4999 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5000 struct nlattr *nl_reg_rule;
5001 char *alpha2 = NULL;
5002 int rem_reg_rules = 0, r = 0;
5003 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5004 u8 dfs_region = 0;
5005 struct ieee80211_regdomain *rd = NULL;
5006
5007 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5008 return -EINVAL;
5009
5010 if (!info->attrs[NL80211_ATTR_REG_RULES])
5011 return -EINVAL;
5012
5013 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5014
5015 if (info->attrs[NL80211_ATTR_DFS_REGION])
5016 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5017
5018 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5019 rem_reg_rules) {
5020 num_rules++;
5021 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5022 return -EINVAL;
5023 }
5024
5025 size_of_regd = sizeof(struct ieee80211_regdomain) +
5026 num_rules * sizeof(struct ieee80211_reg_rule);
5027
5028 rd = kzalloc(size_of_regd, GFP_KERNEL);
5029 if (!rd)
5030 return -ENOMEM;
5031
5032 rd->n_reg_rules = num_rules;
5033 rd->alpha2[0] = alpha2[0];
5034 rd->alpha2[1] = alpha2[1];
5035
5036 /*
5037 * Disable DFS master mode if the DFS region was
5038 * not supported or known on this kernel.
5039 */
5040 if (reg_supported_dfs_region(dfs_region))
5041 rd->dfs_region = dfs_region;
5042
5043 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5044 rem_reg_rules) {
5045 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5046 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5047 reg_rule_policy);
5048 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5049 if (r)
5050 goto bad_reg;
5051
5052 rule_idx++;
5053
5054 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5055 r = -EINVAL;
5056 goto bad_reg;
5057 }
5058 }
5059
5060 mutex_lock(&cfg80211_mutex);
5061
5062 r = set_regdom(rd);
5063 /* set_regdom took ownership */
5064 rd = NULL;
5065 mutex_unlock(&cfg80211_mutex);
5066
5067 bad_reg:
5068 kfree(rd);
5069 return r;
5070 }
5071
5072 static int validate_scan_freqs(struct nlattr *freqs)
5073 {
5074 struct nlattr *attr1, *attr2;
5075 int n_channels = 0, tmp1, tmp2;
5076
5077 nla_for_each_nested(attr1, freqs, tmp1) {
5078 n_channels++;
5079 /*
5080 * Some hardware has a limited channel list for
5081 * scanning, and it is pretty much nonsensical
5082 * to scan for a channel twice, so disallow that
5083 * and don't require drivers to check that the
5084 * channel list they get isn't longer than what
5085 * they can scan, as long as they can scan all
5086 * the channels they registered at once.
5087 */
5088 nla_for_each_nested(attr2, freqs, tmp2)
5089 if (attr1 != attr2 &&
5090 nla_get_u32(attr1) == nla_get_u32(attr2))
5091 return 0;
5092 }
5093
5094 return n_channels;
5095 }
5096
5097 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5098 {
5099 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5100 struct wireless_dev *wdev = info->user_ptr[1];
5101 struct cfg80211_scan_request *request;
5102 struct nlattr *attr;
5103 struct wiphy *wiphy;
5104 int err, tmp, n_ssids = 0, n_channels, i;
5105 size_t ie_len;
5106
5107 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5108 return -EINVAL;
5109
5110 wiphy = &rdev->wiphy;
5111
5112 if (!rdev->ops->scan)
5113 return -EOPNOTSUPP;
5114
5115 mutex_lock(&rdev->sched_scan_mtx);
5116 if (rdev->scan_req) {
5117 err = -EBUSY;
5118 goto unlock;
5119 }
5120
5121 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5122 n_channels = validate_scan_freqs(
5123 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5124 if (!n_channels) {
5125 err = -EINVAL;
5126 goto unlock;
5127 }
5128 } else {
5129 enum ieee80211_band band;
5130 n_channels = 0;
5131
5132 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5133 if (wiphy->bands[band])
5134 n_channels += wiphy->bands[band]->n_channels;
5135 }
5136
5137 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5138 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5139 n_ssids++;
5140
5141 if (n_ssids > wiphy->max_scan_ssids) {
5142 err = -EINVAL;
5143 goto unlock;
5144 }
5145
5146 if (info->attrs[NL80211_ATTR_IE])
5147 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5148 else
5149 ie_len = 0;
5150
5151 if (ie_len > wiphy->max_scan_ie_len) {
5152 err = -EINVAL;
5153 goto unlock;
5154 }
5155
5156 request = kzalloc(sizeof(*request)
5157 + sizeof(*request->ssids) * n_ssids
5158 + sizeof(*request->channels) * n_channels
5159 + ie_len, GFP_KERNEL);
5160 if (!request) {
5161 err = -ENOMEM;
5162 goto unlock;
5163 }
5164
5165 if (n_ssids)
5166 request->ssids = (void *)&request->channels[n_channels];
5167 request->n_ssids = n_ssids;
5168 if (ie_len) {
5169 if (request->ssids)
5170 request->ie = (void *)(request->ssids + n_ssids);
5171 else
5172 request->ie = (void *)(request->channels + n_channels);
5173 }
5174
5175 i = 0;
5176 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5177 /* user specified, bail out if channel not found */
5178 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5179 struct ieee80211_channel *chan;
5180
5181 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5182
5183 if (!chan) {
5184 err = -EINVAL;
5185 goto out_free;
5186 }
5187
5188 /* ignore disabled channels */
5189 if (chan->flags & IEEE80211_CHAN_DISABLED)
5190 continue;
5191
5192 request->channels[i] = chan;
5193 i++;
5194 }
5195 } else {
5196 enum ieee80211_band band;
5197
5198 /* all channels */
5199 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5200 int j;
5201 if (!wiphy->bands[band])
5202 continue;
5203 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5204 struct ieee80211_channel *chan;
5205
5206 chan = &wiphy->bands[band]->channels[j];
5207
5208 if (chan->flags & IEEE80211_CHAN_DISABLED)
5209 continue;
5210
5211 request->channels[i] = chan;
5212 i++;
5213 }
5214 }
5215 }
5216
5217 if (!i) {
5218 err = -EINVAL;
5219 goto out_free;
5220 }
5221
5222 request->n_channels = i;
5223
5224 i = 0;
5225 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5226 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5227 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5228 err = -EINVAL;
5229 goto out_free;
5230 }
5231 request->ssids[i].ssid_len = nla_len(attr);
5232 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5233 i++;
5234 }
5235 }
5236
5237 if (info->attrs[NL80211_ATTR_IE]) {
5238 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5239 memcpy((void *)request->ie,
5240 nla_data(info->attrs[NL80211_ATTR_IE]),
5241 request->ie_len);
5242 }
5243
5244 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5245 if (wiphy->bands[i])
5246 request->rates[i] =
5247 (1 << wiphy->bands[i]->n_bitrates) - 1;
5248
5249 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5250 nla_for_each_nested(attr,
5251 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5252 tmp) {
5253 enum ieee80211_band band = nla_type(attr);
5254
5255 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5256 err = -EINVAL;
5257 goto out_free;
5258 }
5259 err = ieee80211_get_ratemask(wiphy->bands[band],
5260 nla_data(attr),
5261 nla_len(attr),
5262 &request->rates[band]);
5263 if (err)
5264 goto out_free;
5265 }
5266 }
5267
5268 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5269 request->flags = nla_get_u32(
5270 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5271 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5272 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5273 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5274 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5275 err = -EOPNOTSUPP;
5276 goto out_free;
5277 }
5278 }
5279
5280 request->no_cck =
5281 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5282
5283 request->wdev = wdev;
5284 request->wiphy = &rdev->wiphy;
5285 request->scan_start = jiffies;
5286
5287 rdev->scan_req = request;
5288 err = rdev_scan(rdev, request);
5289
5290 if (!err) {
5291 nl80211_send_scan_start(rdev, wdev);
5292 if (wdev->netdev)
5293 dev_hold(wdev->netdev);
5294 } else {
5295 out_free:
5296 rdev->scan_req = NULL;
5297 kfree(request);
5298 }
5299
5300 unlock:
5301 mutex_unlock(&rdev->sched_scan_mtx);
5302 return err;
5303 }
5304
5305 static int nl80211_start_sched_scan(struct sk_buff *skb,
5306 struct genl_info *info)
5307 {
5308 struct cfg80211_sched_scan_request *request;
5309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5310 struct net_device *dev = info->user_ptr[1];
5311 struct nlattr *attr;
5312 struct wiphy *wiphy;
5313 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5314 u32 interval;
5315 enum ieee80211_band band;
5316 size_t ie_len;
5317 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5318
5319 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5320 !rdev->ops->sched_scan_start)
5321 return -EOPNOTSUPP;
5322
5323 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5324 return -EINVAL;
5325
5326 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5327 return -EINVAL;
5328
5329 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5330 if (interval == 0)
5331 return -EINVAL;
5332
5333 wiphy = &rdev->wiphy;
5334
5335 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5336 n_channels = validate_scan_freqs(
5337 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5338 if (!n_channels)
5339 return -EINVAL;
5340 } else {
5341 n_channels = 0;
5342
5343 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5344 if (wiphy->bands[band])
5345 n_channels += wiphy->bands[band]->n_channels;
5346 }
5347
5348 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5349 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5350 tmp)
5351 n_ssids++;
5352
5353 if (n_ssids > wiphy->max_sched_scan_ssids)
5354 return -EINVAL;
5355
5356 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5357 nla_for_each_nested(attr,
5358 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5359 tmp)
5360 n_match_sets++;
5361
5362 if (n_match_sets > wiphy->max_match_sets)
5363 return -EINVAL;
5364
5365 if (info->attrs[NL80211_ATTR_IE])
5366 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5367 else
5368 ie_len = 0;
5369
5370 if (ie_len > wiphy->max_sched_scan_ie_len)
5371 return -EINVAL;
5372
5373 mutex_lock(&rdev->sched_scan_mtx);
5374
5375 if (rdev->sched_scan_req) {
5376 err = -EINPROGRESS;
5377 goto out;
5378 }
5379
5380 request = kzalloc(sizeof(*request)
5381 + sizeof(*request->ssids) * n_ssids
5382 + sizeof(*request->match_sets) * n_match_sets
5383 + sizeof(*request->channels) * n_channels
5384 + ie_len, GFP_KERNEL);
5385 if (!request) {
5386 err = -ENOMEM;
5387 goto out;
5388 }
5389
5390 if (n_ssids)
5391 request->ssids = (void *)&request->channels[n_channels];
5392 request->n_ssids = n_ssids;
5393 if (ie_len) {
5394 if (request->ssids)
5395 request->ie = (void *)(request->ssids + n_ssids);
5396 else
5397 request->ie = (void *)(request->channels + n_channels);
5398 }
5399
5400 if (n_match_sets) {
5401 if (request->ie)
5402 request->match_sets = (void *)(request->ie + ie_len);
5403 else if (request->ssids)
5404 request->match_sets =
5405 (void *)(request->ssids + n_ssids);
5406 else
5407 request->match_sets =
5408 (void *)(request->channels + n_channels);
5409 }
5410 request->n_match_sets = n_match_sets;
5411
5412 i = 0;
5413 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5414 /* user specified, bail out if channel not found */
5415 nla_for_each_nested(attr,
5416 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5417 tmp) {
5418 struct ieee80211_channel *chan;
5419
5420 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5421
5422 if (!chan) {
5423 err = -EINVAL;
5424 goto out_free;
5425 }
5426
5427 /* ignore disabled channels */
5428 if (chan->flags & IEEE80211_CHAN_DISABLED)
5429 continue;
5430
5431 request->channels[i] = chan;
5432 i++;
5433 }
5434 } else {
5435 /* all channels */
5436 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5437 int j;
5438 if (!wiphy->bands[band])
5439 continue;
5440 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5441 struct ieee80211_channel *chan;
5442
5443 chan = &wiphy->bands[band]->channels[j];
5444
5445 if (chan->flags & IEEE80211_CHAN_DISABLED)
5446 continue;
5447
5448 request->channels[i] = chan;
5449 i++;
5450 }
5451 }
5452 }
5453
5454 if (!i) {
5455 err = -EINVAL;
5456 goto out_free;
5457 }
5458
5459 request->n_channels = i;
5460
5461 i = 0;
5462 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5463 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5464 tmp) {
5465 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5466 err = -EINVAL;
5467 goto out_free;
5468 }
5469 request->ssids[i].ssid_len = nla_len(attr);
5470 memcpy(request->ssids[i].ssid, nla_data(attr),
5471 nla_len(attr));
5472 i++;
5473 }
5474 }
5475
5476 i = 0;
5477 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5478 nla_for_each_nested(attr,
5479 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5480 tmp) {
5481 struct nlattr *ssid, *rssi;
5482
5483 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5484 nla_data(attr), nla_len(attr),
5485 nl80211_match_policy);
5486 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5487 if (ssid) {
5488 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5489 err = -EINVAL;
5490 goto out_free;
5491 }
5492 memcpy(request->match_sets[i].ssid.ssid,
5493 nla_data(ssid), nla_len(ssid));
5494 request->match_sets[i].ssid.ssid_len =
5495 nla_len(ssid);
5496 }
5497 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5498 if (rssi)
5499 request->rssi_thold = nla_get_u32(rssi);
5500 else
5501 request->rssi_thold =
5502 NL80211_SCAN_RSSI_THOLD_OFF;
5503 i++;
5504 }
5505 }
5506
5507 if (info->attrs[NL80211_ATTR_IE]) {
5508 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5509 memcpy((void *)request->ie,
5510 nla_data(info->attrs[NL80211_ATTR_IE]),
5511 request->ie_len);
5512 }
5513
5514 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5515 request->flags = nla_get_u32(
5516 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5517 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5518 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5519 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5520 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5521 err = -EOPNOTSUPP;
5522 goto out_free;
5523 }
5524 }
5525
5526 request->dev = dev;
5527 request->wiphy = &rdev->wiphy;
5528 request->interval = interval;
5529 request->scan_start = jiffies;
5530
5531 err = rdev_sched_scan_start(rdev, dev, request);
5532 if (!err) {
5533 rdev->sched_scan_req = request;
5534 nl80211_send_sched_scan(rdev, dev,
5535 NL80211_CMD_START_SCHED_SCAN);
5536 goto out;
5537 }
5538
5539 out_free:
5540 kfree(request);
5541 out:
5542 mutex_unlock(&rdev->sched_scan_mtx);
5543 return err;
5544 }
5545
5546 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5547 struct genl_info *info)
5548 {
5549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5550 int err;
5551
5552 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5553 !rdev->ops->sched_scan_stop)
5554 return -EOPNOTSUPP;
5555
5556 mutex_lock(&rdev->sched_scan_mtx);
5557 err = __cfg80211_stop_sched_scan(rdev, false);
5558 mutex_unlock(&rdev->sched_scan_mtx);
5559
5560 return err;
5561 }
5562
5563 static int nl80211_start_radar_detection(struct sk_buff *skb,
5564 struct genl_info *info)
5565 {
5566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5567 struct net_device *dev = info->user_ptr[1];
5568 struct wireless_dev *wdev = dev->ieee80211_ptr;
5569 struct cfg80211_chan_def chandef;
5570 int err;
5571
5572 err = nl80211_parse_chandef(rdev, info, &chandef);
5573 if (err)
5574 return err;
5575
5576 if (wdev->cac_started)
5577 return -EBUSY;
5578
5579 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5580 if (err < 0)
5581 return err;
5582
5583 if (err == 0)
5584 return -EINVAL;
5585
5586 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5587 return -EINVAL;
5588
5589 if (!rdev->ops->start_radar_detection)
5590 return -EOPNOTSUPP;
5591
5592 mutex_lock(&rdev->devlist_mtx);
5593 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5594 chandef.chan, CHAN_MODE_SHARED,
5595 BIT(chandef.width));
5596 if (err)
5597 goto err_locked;
5598
5599 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5600 if (!err) {
5601 wdev->channel = chandef.chan;
5602 wdev->cac_started = true;
5603 wdev->cac_start_time = jiffies;
5604 }
5605 err_locked:
5606 mutex_unlock(&rdev->devlist_mtx);
5607
5608 return err;
5609 }
5610
5611 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5612 u32 seq, int flags,
5613 struct cfg80211_registered_device *rdev,
5614 struct wireless_dev *wdev,
5615 struct cfg80211_internal_bss *intbss)
5616 {
5617 struct cfg80211_bss *res = &intbss->pub;
5618 const struct cfg80211_bss_ies *ies;
5619 void *hdr;
5620 struct nlattr *bss;
5621 bool tsf = false;
5622
5623 ASSERT_WDEV_LOCK(wdev);
5624
5625 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5626 NL80211_CMD_NEW_SCAN_RESULTS);
5627 if (!hdr)
5628 return -1;
5629
5630 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5631
5632 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5633 goto nla_put_failure;
5634 if (wdev->netdev &&
5635 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5636 goto nla_put_failure;
5637 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5638 goto nla_put_failure;
5639
5640 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5641 if (!bss)
5642 goto nla_put_failure;
5643 if ((!is_zero_ether_addr(res->bssid) &&
5644 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5645 goto nla_put_failure;
5646
5647 rcu_read_lock();
5648 ies = rcu_dereference(res->ies);
5649 if (ies) {
5650 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5651 goto fail_unlock_rcu;
5652 tsf = true;
5653 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5654 ies->len, ies->data))
5655 goto fail_unlock_rcu;
5656 }
5657 ies = rcu_dereference(res->beacon_ies);
5658 if (ies) {
5659 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5660 goto fail_unlock_rcu;
5661 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5662 ies->len, ies->data))
5663 goto fail_unlock_rcu;
5664 }
5665 rcu_read_unlock();
5666
5667 if (res->beacon_interval &&
5668 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5669 goto nla_put_failure;
5670 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5671 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5672 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5673 jiffies_to_msecs(jiffies - intbss->ts)))
5674 goto nla_put_failure;
5675
5676 switch (rdev->wiphy.signal_type) {
5677 case CFG80211_SIGNAL_TYPE_MBM:
5678 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5679 goto nla_put_failure;
5680 break;
5681 case CFG80211_SIGNAL_TYPE_UNSPEC:
5682 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5683 goto nla_put_failure;
5684 break;
5685 default:
5686 break;
5687 }
5688
5689 switch (wdev->iftype) {
5690 case NL80211_IFTYPE_P2P_CLIENT:
5691 case NL80211_IFTYPE_STATION:
5692 if (intbss == wdev->current_bss &&
5693 nla_put_u32(msg, NL80211_BSS_STATUS,
5694 NL80211_BSS_STATUS_ASSOCIATED))
5695 goto nla_put_failure;
5696 break;
5697 case NL80211_IFTYPE_ADHOC:
5698 if (intbss == wdev->current_bss &&
5699 nla_put_u32(msg, NL80211_BSS_STATUS,
5700 NL80211_BSS_STATUS_IBSS_JOINED))
5701 goto nla_put_failure;
5702 break;
5703 default:
5704 break;
5705 }
5706
5707 nla_nest_end(msg, bss);
5708
5709 return genlmsg_end(msg, hdr);
5710
5711 fail_unlock_rcu:
5712 rcu_read_unlock();
5713 nla_put_failure:
5714 genlmsg_cancel(msg, hdr);
5715 return -EMSGSIZE;
5716 }
5717
5718 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5719 {
5720 struct cfg80211_registered_device *rdev;
5721 struct cfg80211_internal_bss *scan;
5722 struct wireless_dev *wdev;
5723 int start = cb->args[2], idx = 0;
5724 int err;
5725
5726 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5727 if (err)
5728 return err;
5729
5730 wdev_lock(wdev);
5731 spin_lock_bh(&rdev->bss_lock);
5732 cfg80211_bss_expire(rdev);
5733
5734 cb->seq = rdev->bss_generation;
5735
5736 list_for_each_entry(scan, &rdev->bss_list, list) {
5737 if (++idx <= start)
5738 continue;
5739 if (nl80211_send_bss(skb, cb,
5740 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5741 rdev, wdev, scan) < 0) {
5742 idx--;
5743 break;
5744 }
5745 }
5746
5747 spin_unlock_bh(&rdev->bss_lock);
5748 wdev_unlock(wdev);
5749
5750 cb->args[2] = idx;
5751 nl80211_finish_wdev_dump(rdev);
5752
5753 return skb->len;
5754 }
5755
5756 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5757 int flags, struct net_device *dev,
5758 struct survey_info *survey)
5759 {
5760 void *hdr;
5761 struct nlattr *infoattr;
5762
5763 hdr = nl80211hdr_put(msg, portid, seq, flags,
5764 NL80211_CMD_NEW_SURVEY_RESULTS);
5765 if (!hdr)
5766 return -ENOMEM;
5767
5768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5769 goto nla_put_failure;
5770
5771 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5772 if (!infoattr)
5773 goto nla_put_failure;
5774
5775 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5776 survey->channel->center_freq))
5777 goto nla_put_failure;
5778
5779 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5780 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5781 goto nla_put_failure;
5782 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5783 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5784 goto nla_put_failure;
5785 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5786 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5787 survey->channel_time))
5788 goto nla_put_failure;
5789 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5790 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5791 survey->channel_time_busy))
5792 goto nla_put_failure;
5793 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5794 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5795 survey->channel_time_ext_busy))
5796 goto nla_put_failure;
5797 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5798 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5799 survey->channel_time_rx))
5800 goto nla_put_failure;
5801 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5802 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5803 survey->channel_time_tx))
5804 goto nla_put_failure;
5805
5806 nla_nest_end(msg, infoattr);
5807
5808 return genlmsg_end(msg, hdr);
5809
5810 nla_put_failure:
5811 genlmsg_cancel(msg, hdr);
5812 return -EMSGSIZE;
5813 }
5814
5815 static int nl80211_dump_survey(struct sk_buff *skb,
5816 struct netlink_callback *cb)
5817 {
5818 struct survey_info survey;
5819 struct cfg80211_registered_device *dev;
5820 struct wireless_dev *wdev;
5821 int survey_idx = cb->args[2];
5822 int res;
5823
5824 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5825 if (res)
5826 return res;
5827
5828 if (!wdev->netdev) {
5829 res = -EINVAL;
5830 goto out_err;
5831 }
5832
5833 if (!dev->ops->dump_survey) {
5834 res = -EOPNOTSUPP;
5835 goto out_err;
5836 }
5837
5838 while (1) {
5839 struct ieee80211_channel *chan;
5840
5841 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5842 if (res == -ENOENT)
5843 break;
5844 if (res)
5845 goto out_err;
5846
5847 /* Survey without a channel doesn't make sense */
5848 if (!survey.channel) {
5849 res = -EINVAL;
5850 goto out;
5851 }
5852
5853 chan = ieee80211_get_channel(&dev->wiphy,
5854 survey.channel->center_freq);
5855 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5856 survey_idx++;
5857 continue;
5858 }
5859
5860 if (nl80211_send_survey(skb,
5861 NETLINK_CB(cb->skb).portid,
5862 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5863 wdev->netdev, &survey) < 0)
5864 goto out;
5865 survey_idx++;
5866 }
5867
5868 out:
5869 cb->args[2] = survey_idx;
5870 res = skb->len;
5871 out_err:
5872 nl80211_finish_wdev_dump(dev);
5873 return res;
5874 }
5875
5876 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5877 {
5878 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5879 NL80211_WPA_VERSION_2));
5880 }
5881
5882 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5883 {
5884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5885 struct net_device *dev = info->user_ptr[1];
5886 struct ieee80211_channel *chan;
5887 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5888 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5889 enum nl80211_auth_type auth_type;
5890 struct key_parse key;
5891 bool local_state_change;
5892
5893 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5894 return -EINVAL;
5895
5896 if (!info->attrs[NL80211_ATTR_MAC])
5897 return -EINVAL;
5898
5899 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5900 return -EINVAL;
5901
5902 if (!info->attrs[NL80211_ATTR_SSID])
5903 return -EINVAL;
5904
5905 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5906 return -EINVAL;
5907
5908 err = nl80211_parse_key(info, &key);
5909 if (err)
5910 return err;
5911
5912 if (key.idx >= 0) {
5913 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5914 return -EINVAL;
5915 if (!key.p.key || !key.p.key_len)
5916 return -EINVAL;
5917 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5918 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5919 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5920 key.p.key_len != WLAN_KEY_LEN_WEP104))
5921 return -EINVAL;
5922 if (key.idx > 4)
5923 return -EINVAL;
5924 } else {
5925 key.p.key_len = 0;
5926 key.p.key = NULL;
5927 }
5928
5929 if (key.idx >= 0) {
5930 int i;
5931 bool ok = false;
5932 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5933 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5934 ok = true;
5935 break;
5936 }
5937 }
5938 if (!ok)
5939 return -EINVAL;
5940 }
5941
5942 if (!rdev->ops->auth)
5943 return -EOPNOTSUPP;
5944
5945 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5946 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5947 return -EOPNOTSUPP;
5948
5949 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5950 chan = ieee80211_get_channel(&rdev->wiphy,
5951 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5952 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5953 return -EINVAL;
5954
5955 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5956 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5957
5958 if (info->attrs[NL80211_ATTR_IE]) {
5959 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5960 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5961 }
5962
5963 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5964 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5965 return -EINVAL;
5966
5967 if (auth_type == NL80211_AUTHTYPE_SAE &&
5968 !info->attrs[NL80211_ATTR_SAE_DATA])
5969 return -EINVAL;
5970
5971 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5972 if (auth_type != NL80211_AUTHTYPE_SAE)
5973 return -EINVAL;
5974 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5975 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5976 /* need to include at least Auth Transaction and Status Code */
5977 if (sae_data_len < 4)
5978 return -EINVAL;
5979 }
5980
5981 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5982
5983 /*
5984 * Since we no longer track auth state, ignore
5985 * requests to only change local state.
5986 */
5987 if (local_state_change)
5988 return 0;
5989
5990 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5991 ssid, ssid_len, ie, ie_len,
5992 key.p.key, key.p.key_len, key.idx,
5993 sae_data, sae_data_len);
5994 }
5995
5996 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5997 struct genl_info *info,
5998 struct cfg80211_crypto_settings *settings,
5999 int cipher_limit)
6000 {
6001 memset(settings, 0, sizeof(*settings));
6002
6003 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6004
6005 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6006 u16 proto;
6007 proto = nla_get_u16(
6008 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6009 settings->control_port_ethertype = cpu_to_be16(proto);
6010 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6011 proto != ETH_P_PAE)
6012 return -EINVAL;
6013 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6014 settings->control_port_no_encrypt = true;
6015 } else
6016 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6017
6018 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6019 void *data;
6020 int len, i;
6021
6022 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6023 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6024 settings->n_ciphers_pairwise = len / sizeof(u32);
6025
6026 if (len % sizeof(u32))
6027 return -EINVAL;
6028
6029 if (settings->n_ciphers_pairwise > cipher_limit)
6030 return -EINVAL;
6031
6032 memcpy(settings->ciphers_pairwise, data, len);
6033
6034 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6035 if (!cfg80211_supported_cipher_suite(
6036 &rdev->wiphy,
6037 settings->ciphers_pairwise[i]))
6038 return -EINVAL;
6039 }
6040
6041 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6042 settings->cipher_group =
6043 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6044 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6045 settings->cipher_group))
6046 return -EINVAL;
6047 }
6048
6049 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6050 settings->wpa_versions =
6051 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6052 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6053 return -EINVAL;
6054 }
6055
6056 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6057 void *data;
6058 int len;
6059
6060 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6061 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6062 settings->n_akm_suites = len / sizeof(u32);
6063
6064 if (len % sizeof(u32))
6065 return -EINVAL;
6066
6067 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6068 return -EINVAL;
6069
6070 memcpy(settings->akm_suites, data, len);
6071 }
6072
6073 return 0;
6074 }
6075
6076 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6077 {
6078 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6079 struct net_device *dev = info->user_ptr[1];
6080 struct ieee80211_channel *chan;
6081 struct cfg80211_assoc_request req = {};
6082 const u8 *bssid, *ssid;
6083 int err, ssid_len = 0;
6084
6085 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6086 return -EINVAL;
6087
6088 if (!info->attrs[NL80211_ATTR_MAC] ||
6089 !info->attrs[NL80211_ATTR_SSID] ||
6090 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6091 return -EINVAL;
6092
6093 if (!rdev->ops->assoc)
6094 return -EOPNOTSUPP;
6095
6096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6098 return -EOPNOTSUPP;
6099
6100 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6101
6102 chan = ieee80211_get_channel(&rdev->wiphy,
6103 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6104 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6105 return -EINVAL;
6106
6107 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6108 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6109
6110 if (info->attrs[NL80211_ATTR_IE]) {
6111 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6112 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6113 }
6114
6115 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6116 enum nl80211_mfp mfp =
6117 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6118 if (mfp == NL80211_MFP_REQUIRED)
6119 req.use_mfp = true;
6120 else if (mfp != NL80211_MFP_NO)
6121 return -EINVAL;
6122 }
6123
6124 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6125 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6126
6127 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6128 req.flags |= ASSOC_REQ_DISABLE_HT;
6129
6130 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6131 memcpy(&req.ht_capa_mask,
6132 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6133 sizeof(req.ht_capa_mask));
6134
6135 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6136 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6137 return -EINVAL;
6138 memcpy(&req.ht_capa,
6139 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6140 sizeof(req.ht_capa));
6141 }
6142
6143 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6144 req.flags |= ASSOC_REQ_DISABLE_VHT;
6145
6146 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6147 memcpy(&req.vht_capa_mask,
6148 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6149 sizeof(req.vht_capa_mask));
6150
6151 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6152 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6153 return -EINVAL;
6154 memcpy(&req.vht_capa,
6155 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6156 sizeof(req.vht_capa));
6157 }
6158
6159 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6160 if (!err)
6161 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6162 ssid, ssid_len, &req);
6163
6164 return err;
6165 }
6166
6167 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6168 {
6169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6170 struct net_device *dev = info->user_ptr[1];
6171 const u8 *ie = NULL, *bssid;
6172 int ie_len = 0;
6173 u16 reason_code;
6174 bool local_state_change;
6175
6176 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6177 return -EINVAL;
6178
6179 if (!info->attrs[NL80211_ATTR_MAC])
6180 return -EINVAL;
6181
6182 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6183 return -EINVAL;
6184
6185 if (!rdev->ops->deauth)
6186 return -EOPNOTSUPP;
6187
6188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6190 return -EOPNOTSUPP;
6191
6192 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6193
6194 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6195 if (reason_code == 0) {
6196 /* Reason Code 0 is reserved */
6197 return -EINVAL;
6198 }
6199
6200 if (info->attrs[NL80211_ATTR_IE]) {
6201 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6202 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6203 }
6204
6205 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6206
6207 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6208 local_state_change);
6209 }
6210
6211 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6212 {
6213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6214 struct net_device *dev = info->user_ptr[1];
6215 const u8 *ie = NULL, *bssid;
6216 int ie_len = 0;
6217 u16 reason_code;
6218 bool local_state_change;
6219
6220 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6221 return -EINVAL;
6222
6223 if (!info->attrs[NL80211_ATTR_MAC])
6224 return -EINVAL;
6225
6226 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6227 return -EINVAL;
6228
6229 if (!rdev->ops->disassoc)
6230 return -EOPNOTSUPP;
6231
6232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6233 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6234 return -EOPNOTSUPP;
6235
6236 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6237
6238 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6239 if (reason_code == 0) {
6240 /* Reason Code 0 is reserved */
6241 return -EINVAL;
6242 }
6243
6244 if (info->attrs[NL80211_ATTR_IE]) {
6245 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6246 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6247 }
6248
6249 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6250
6251 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6252 local_state_change);
6253 }
6254
6255 static bool
6256 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6257 int mcast_rate[IEEE80211_NUM_BANDS],
6258 int rateval)
6259 {
6260 struct wiphy *wiphy = &rdev->wiphy;
6261 bool found = false;
6262 int band, i;
6263
6264 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6265 struct ieee80211_supported_band *sband;
6266
6267 sband = wiphy->bands[band];
6268 if (!sband)
6269 continue;
6270
6271 for (i = 0; i < sband->n_bitrates; i++) {
6272 if (sband->bitrates[i].bitrate == rateval) {
6273 mcast_rate[band] = i + 1;
6274 found = true;
6275 break;
6276 }
6277 }
6278 }
6279
6280 return found;
6281 }
6282
6283 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6284 {
6285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286 struct net_device *dev = info->user_ptr[1];
6287 struct cfg80211_ibss_params ibss;
6288 struct wiphy *wiphy;
6289 struct cfg80211_cached_keys *connkeys = NULL;
6290 int err;
6291
6292 memset(&ibss, 0, sizeof(ibss));
6293
6294 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6295 return -EINVAL;
6296
6297 if (!info->attrs[NL80211_ATTR_SSID] ||
6298 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6299 return -EINVAL;
6300
6301 ibss.beacon_interval = 100;
6302
6303 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6304 ibss.beacon_interval =
6305 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6306 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6307 return -EINVAL;
6308 }
6309
6310 if (!rdev->ops->join_ibss)
6311 return -EOPNOTSUPP;
6312
6313 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6314 return -EOPNOTSUPP;
6315
6316 wiphy = &rdev->wiphy;
6317
6318 if (info->attrs[NL80211_ATTR_MAC]) {
6319 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6320
6321 if (!is_valid_ether_addr(ibss.bssid))
6322 return -EINVAL;
6323 }
6324 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6325 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6326
6327 if (info->attrs[NL80211_ATTR_IE]) {
6328 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6329 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6330 }
6331
6332 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6333 if (err)
6334 return err;
6335
6336 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6337 return -EINVAL;
6338
6339 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6340 return -EINVAL;
6341 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6342 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6343 return -EINVAL;
6344
6345 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6346 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6347
6348 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6349 u8 *rates =
6350 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6351 int n_rates =
6352 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6353 struct ieee80211_supported_band *sband =
6354 wiphy->bands[ibss.chandef.chan->band];
6355
6356 err = ieee80211_get_ratemask(sband, rates, n_rates,
6357 &ibss.basic_rates);
6358 if (err)
6359 return err;
6360 }
6361
6362 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6363 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6364 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6365 return -EINVAL;
6366
6367 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6368 bool no_ht = false;
6369
6370 connkeys = nl80211_parse_connkeys(rdev,
6371 info->attrs[NL80211_ATTR_KEYS],
6372 &no_ht);
6373 if (IS_ERR(connkeys))
6374 return PTR_ERR(connkeys);
6375
6376 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6377 no_ht) {
6378 kfree(connkeys);
6379 return -EINVAL;
6380 }
6381 }
6382
6383 ibss.control_port =
6384 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6385
6386 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6387 if (err)
6388 kfree(connkeys);
6389 return err;
6390 }
6391
6392 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6393 {
6394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6395 struct net_device *dev = info->user_ptr[1];
6396
6397 if (!rdev->ops->leave_ibss)
6398 return -EOPNOTSUPP;
6399
6400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6401 return -EOPNOTSUPP;
6402
6403 return cfg80211_leave_ibss(rdev, dev, false);
6404 }
6405
6406 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6407 {
6408 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6409 struct net_device *dev = info->user_ptr[1];
6410 int mcast_rate[IEEE80211_NUM_BANDS];
6411 u32 nla_rate;
6412 int err;
6413
6414 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6415 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6416 return -EOPNOTSUPP;
6417
6418 if (!rdev->ops->set_mcast_rate)
6419 return -EOPNOTSUPP;
6420
6421 memset(mcast_rate, 0, sizeof(mcast_rate));
6422
6423 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6424 return -EINVAL;
6425
6426 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6427 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6428 return -EINVAL;
6429
6430 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6431
6432 return err;
6433 }
6434
6435 static struct sk_buff *
6436 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6437 int approxlen, u32 portid, u32 seq,
6438 enum nl80211_commands cmd,
6439 enum nl80211_attrs attr,
6440 const struct nl80211_vendor_cmd_info *info,
6441 gfp_t gfp)
6442 {
6443 struct sk_buff *skb;
6444 void *hdr;
6445 struct nlattr *data;
6446
6447 skb = nlmsg_new(approxlen + 100, gfp);
6448 if (!skb)
6449 return NULL;
6450
6451 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6452 if (!hdr) {
6453 kfree_skb(skb);
6454 return NULL;
6455 }
6456
6457 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6458 goto nla_put_failure;
6459
6460 if (info) {
6461 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6462 info->vendor_id))
6463 goto nla_put_failure;
6464 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6465 info->subcmd))
6466 goto nla_put_failure;
6467 }
6468
6469 data = nla_nest_start(skb, attr);
6470
6471 ((void **)skb->cb)[0] = rdev;
6472 ((void **)skb->cb)[1] = hdr;
6473 ((void **)skb->cb)[2] = data;
6474
6475 return skb;
6476
6477 nla_put_failure:
6478 kfree_skb(skb);
6479 return NULL;
6480 }
6481
6482 #ifdef CONFIG_NL80211_TESTMODE
6483 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6484 .name = "testmode",
6485 };
6486
6487 static struct genl_multicast_group nl80211_vendor_mcgrp = {
6488 .name = "vendor",
6489 };
6490
6491 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6492 {
6493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6494 int err;
6495
6496 if (!info->attrs[NL80211_ATTR_TESTDATA])
6497 return -EINVAL;
6498
6499 err = -EOPNOTSUPP;
6500 if (rdev->ops->testmode_cmd) {
6501 rdev->cur_cmd_info = info;
6502 err = rdev_testmode_cmd(rdev,
6503 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6504 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6505 rdev->cur_cmd_info = NULL;
6506 }
6507
6508 return err;
6509 }
6510
6511 static int nl80211_testmode_dump(struct sk_buff *skb,
6512 struct netlink_callback *cb)
6513 {
6514 struct cfg80211_registered_device *rdev;
6515 int err;
6516 long phy_idx;
6517 void *data = NULL;
6518 int data_len = 0;
6519
6520 if (cb->args[0]) {
6521 /*
6522 * 0 is a valid index, but not valid for args[0],
6523 * so we need to offset by 1.
6524 */
6525 phy_idx = cb->args[0] - 1;
6526 } else {
6527 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6528 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6529 nl80211_policy);
6530 if (err)
6531 return err;
6532
6533 mutex_lock(&cfg80211_mutex);
6534 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6535 nl80211_fam.attrbuf);
6536 if (IS_ERR(rdev)) {
6537 mutex_unlock(&cfg80211_mutex);
6538 return PTR_ERR(rdev);
6539 }
6540 phy_idx = rdev->wiphy_idx;
6541 rdev = NULL;
6542 mutex_unlock(&cfg80211_mutex);
6543
6544 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6545 cb->args[1] =
6546 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6547 }
6548
6549 if (cb->args[1]) {
6550 data = nla_data((void *)cb->args[1]);
6551 data_len = nla_len((void *)cb->args[1]);
6552 }
6553
6554 mutex_lock(&cfg80211_mutex);
6555 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6556 if (!rdev) {
6557 mutex_unlock(&cfg80211_mutex);
6558 return -ENOENT;
6559 }
6560 cfg80211_lock_rdev(rdev);
6561 mutex_unlock(&cfg80211_mutex);
6562
6563 if (!rdev->ops->testmode_dump) {
6564 err = -EOPNOTSUPP;
6565 goto out_err;
6566 }
6567
6568 while (1) {
6569 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6570 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6571 NL80211_CMD_TESTMODE);
6572 struct nlattr *tmdata;
6573
6574 if (!hdr)
6575 break;
6576
6577 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6578 genlmsg_cancel(skb, hdr);
6579 break;
6580 }
6581
6582 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6583 if (!tmdata) {
6584 genlmsg_cancel(skb, hdr);
6585 break;
6586 }
6587 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6588 nla_nest_end(skb, tmdata);
6589
6590 if (err == -ENOBUFS || err == -ENOENT) {
6591 genlmsg_cancel(skb, hdr);
6592 break;
6593 } else if (err) {
6594 genlmsg_cancel(skb, hdr);
6595 goto out_err;
6596 }
6597
6598 genlmsg_end(skb, hdr);
6599 }
6600
6601 err = skb->len;
6602 /* see above */
6603 cb->args[0] = phy_idx + 1;
6604 out_err:
6605 cfg80211_unlock_rdev(rdev);
6606 return err;
6607 }
6608
6609 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6610 enum nl80211_commands cmd,
6611 enum nl80211_attrs attr,
6612 int vendor_event_idx,
6613 int approxlen, gfp_t gfp)
6614 {
6615 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6616 const struct nl80211_vendor_cmd_info *info;
6617
6618 switch (cmd) {
6619 case NL80211_CMD_TESTMODE:
6620 if (WARN_ON(vendor_event_idx != -1))
6621 return NULL;
6622 info = NULL;
6623 break;
6624 case NL80211_CMD_VENDOR:
6625 if (WARN_ON(vendor_event_idx < 0 ||
6626 vendor_event_idx >= wiphy->n_vendor_events))
6627 return NULL;
6628 info = &wiphy->vendor_events[vendor_event_idx];
6629 break;
6630 default:
6631 WARN_ON(1);
6632 return NULL;
6633 }
6634 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6635 cmd, attr, info, gfp);
6636 }
6637 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6638
6639 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6640 {
6641 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6642 void *hdr = ((void **)skb->cb)[1];
6643 struct nlattr *data = ((void **)skb->cb)[2];
6644
6645 /* clear CB data for netlink core to own from now on */
6646 memset(skb->cb, 0, sizeof(skb->cb));
6647
6648 nla_nest_end(skb, data);
6649 genlmsg_end(skb, hdr);
6650
6651 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6652 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6653 nl80211_vendor_mcgrp.id, gfp);
6654 else
6655 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6656 nl80211_testmode_mcgrp.id, gfp);
6657 }
6658 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6659 #endif
6660
6661 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6662 {
6663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6664 struct net_device *dev = info->user_ptr[1];
6665 struct cfg80211_connect_params connect;
6666 struct wiphy *wiphy;
6667 struct cfg80211_cached_keys *connkeys = NULL;
6668 int err;
6669
6670 memset(&connect, 0, sizeof(connect));
6671
6672 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6673 return -EINVAL;
6674
6675 if (!info->attrs[NL80211_ATTR_SSID] ||
6676 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6677 return -EINVAL;
6678
6679 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6680 connect.auth_type =
6681 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6682 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6683 NL80211_CMD_CONNECT))
6684 return -EINVAL;
6685 } else
6686 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6687
6688 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6689
6690 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6691 NL80211_MAX_NR_CIPHER_SUITES);
6692 if (err)
6693 return err;
6694
6695 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6696 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6697 return -EOPNOTSUPP;
6698
6699 wiphy = &rdev->wiphy;
6700
6701 connect.bg_scan_period = -1;
6702 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6703 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6704 connect.bg_scan_period =
6705 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6706 }
6707
6708 if (info->attrs[NL80211_ATTR_MAC])
6709 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6710 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6711 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6712
6713 if (info->attrs[NL80211_ATTR_IE]) {
6714 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6715 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6716 }
6717
6718 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6719 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6720 if (connect.mfp != NL80211_MFP_REQUIRED &&
6721 connect.mfp != NL80211_MFP_NO)
6722 return -EINVAL;
6723 } else {
6724 connect.mfp = NL80211_MFP_NO;
6725 }
6726
6727 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6728 connect.channel =
6729 ieee80211_get_channel(wiphy,
6730 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6731 if (!connect.channel ||
6732 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6733 return -EINVAL;
6734 }
6735
6736 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6737 connkeys = nl80211_parse_connkeys(rdev,
6738 info->attrs[NL80211_ATTR_KEYS], NULL);
6739 if (IS_ERR(connkeys))
6740 return PTR_ERR(connkeys);
6741 }
6742
6743 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6744 connect.flags |= ASSOC_REQ_DISABLE_HT;
6745
6746 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6747 memcpy(&connect.ht_capa_mask,
6748 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6749 sizeof(connect.ht_capa_mask));
6750
6751 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6752 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6753 kfree(connkeys);
6754 return -EINVAL;
6755 }
6756 memcpy(&connect.ht_capa,
6757 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6758 sizeof(connect.ht_capa));
6759 }
6760
6761 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6762 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6763
6764 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6765 memcpy(&connect.vht_capa_mask,
6766 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6767 sizeof(connect.vht_capa_mask));
6768
6769 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6770 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6771 kfree(connkeys);
6772 return -EINVAL;
6773 }
6774 memcpy(&connect.vht_capa,
6775 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6776 sizeof(connect.vht_capa));
6777 }
6778
6779 err = cfg80211_connect(rdev, dev, &connect, connkeys);
6780 if (err)
6781 kfree(connkeys);
6782 return err;
6783 }
6784
6785 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6786 {
6787 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6788 struct net_device *dev = info->user_ptr[1];
6789 u16 reason;
6790
6791 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6792 reason = WLAN_REASON_DEAUTH_LEAVING;
6793 else
6794 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6795
6796 if (reason == 0)
6797 return -EINVAL;
6798
6799 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6800 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6801 return -EOPNOTSUPP;
6802
6803 return cfg80211_disconnect(rdev, dev, reason, true);
6804 }
6805
6806 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6807 {
6808 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6809 struct net *net;
6810 int err;
6811 u32 pid;
6812
6813 if (!info->attrs[NL80211_ATTR_PID])
6814 return -EINVAL;
6815
6816 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6817
6818 net = get_net_ns_by_pid(pid);
6819 if (IS_ERR(net))
6820 return PTR_ERR(net);
6821
6822 err = 0;
6823
6824 /* check if anything to do */
6825 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6826 err = cfg80211_switch_netns(rdev, net);
6827
6828 put_net(net);
6829 return err;
6830 }
6831
6832 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6833 {
6834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6835 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6836 struct cfg80211_pmksa *pmksa) = NULL;
6837 struct net_device *dev = info->user_ptr[1];
6838 struct cfg80211_pmksa pmksa;
6839
6840 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6841
6842 if (!info->attrs[NL80211_ATTR_MAC])
6843 return -EINVAL;
6844
6845 if (!info->attrs[NL80211_ATTR_PMKID])
6846 return -EINVAL;
6847
6848 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6849 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6850
6851 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6852 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6853 return -EOPNOTSUPP;
6854
6855 switch (info->genlhdr->cmd) {
6856 case NL80211_CMD_SET_PMKSA:
6857 rdev_ops = rdev->ops->set_pmksa;
6858 break;
6859 case NL80211_CMD_DEL_PMKSA:
6860 rdev_ops = rdev->ops->del_pmksa;
6861 break;
6862 default:
6863 WARN_ON(1);
6864 break;
6865 }
6866
6867 if (!rdev_ops)
6868 return -EOPNOTSUPP;
6869
6870 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6871 }
6872
6873 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6874 {
6875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6876 struct net_device *dev = info->user_ptr[1];
6877
6878 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6879 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6880 return -EOPNOTSUPP;
6881
6882 if (!rdev->ops->flush_pmksa)
6883 return -EOPNOTSUPP;
6884
6885 return rdev_flush_pmksa(rdev, dev);
6886 }
6887
6888 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6889 {
6890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6891 struct net_device *dev = info->user_ptr[1];
6892 u8 action_code, dialog_token;
6893 u16 status_code;
6894 u8 *peer;
6895
6896 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6897 !rdev->ops->tdls_mgmt)
6898 return -EOPNOTSUPP;
6899
6900 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6901 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6902 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6903 !info->attrs[NL80211_ATTR_IE] ||
6904 !info->attrs[NL80211_ATTR_MAC])
6905 return -EINVAL;
6906
6907 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6908 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6909 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6910 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6911
6912 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6913 dialog_token, status_code,
6914 nla_data(info->attrs[NL80211_ATTR_IE]),
6915 nla_len(info->attrs[NL80211_ATTR_IE]));
6916 }
6917
6918 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6919 {
6920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6921 struct net_device *dev = info->user_ptr[1];
6922 enum nl80211_tdls_operation operation;
6923 u8 *peer;
6924
6925 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6926 !rdev->ops->tdls_oper)
6927 return -EOPNOTSUPP;
6928
6929 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6930 !info->attrs[NL80211_ATTR_MAC])
6931 return -EINVAL;
6932
6933 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6934 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6935
6936 return rdev_tdls_oper(rdev, dev, peer, operation);
6937 }
6938
6939 static int nl80211_remain_on_channel(struct sk_buff *skb,
6940 struct genl_info *info)
6941 {
6942 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6943 struct wireless_dev *wdev = info->user_ptr[1];
6944 struct cfg80211_chan_def chandef;
6945 struct sk_buff *msg;
6946 void *hdr;
6947 u64 cookie;
6948 u32 duration;
6949 int err;
6950
6951 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6952 !info->attrs[NL80211_ATTR_DURATION])
6953 return -EINVAL;
6954
6955 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6956
6957 if (!rdev->ops->remain_on_channel ||
6958 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6959 return -EOPNOTSUPP;
6960
6961 /*
6962 * We should be on that channel for at least a minimum amount of
6963 * time (10ms) but no longer than the driver supports.
6964 */
6965 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6966 duration > rdev->wiphy.max_remain_on_channel_duration)
6967 return -EINVAL;
6968
6969 err = nl80211_parse_chandef(rdev, info, &chandef);
6970 if (err)
6971 return err;
6972
6973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6974 if (!msg)
6975 return -ENOMEM;
6976
6977 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6978 NL80211_CMD_REMAIN_ON_CHANNEL);
6979 if (!hdr) {
6980 err = -ENOBUFS;
6981 goto free_msg;
6982 }
6983
6984 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6985 duration, &cookie);
6986
6987 if (err)
6988 goto free_msg;
6989
6990 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6991 goto nla_put_failure;
6992
6993 genlmsg_end(msg, hdr);
6994
6995 return genlmsg_reply(msg, info);
6996
6997 nla_put_failure:
6998 err = -ENOBUFS;
6999 free_msg:
7000 nlmsg_free(msg);
7001 return err;
7002 }
7003
7004 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7005 struct genl_info *info)
7006 {
7007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7008 struct wireless_dev *wdev = info->user_ptr[1];
7009 u64 cookie;
7010
7011 if (!info->attrs[NL80211_ATTR_COOKIE])
7012 return -EINVAL;
7013
7014 if (!rdev->ops->cancel_remain_on_channel)
7015 return -EOPNOTSUPP;
7016
7017 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7018
7019 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7020 }
7021
7022 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7023 u8 *rates, u8 rates_len)
7024 {
7025 u8 i;
7026 u32 mask = 0;
7027
7028 for (i = 0; i < rates_len; i++) {
7029 int rate = (rates[i] & 0x7f) * 5;
7030 int ridx;
7031 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7032 struct ieee80211_rate *srate =
7033 &sband->bitrates[ridx];
7034 if (rate == srate->bitrate) {
7035 mask |= 1 << ridx;
7036 break;
7037 }
7038 }
7039 if (ridx == sband->n_bitrates)
7040 return 0; /* rate not found */
7041 }
7042
7043 return mask;
7044 }
7045
7046 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7047 u8 *rates, u8 rates_len,
7048 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7049 {
7050 u8 i;
7051
7052 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7053
7054 for (i = 0; i < rates_len; i++) {
7055 int ridx, rbit;
7056
7057 ridx = rates[i] / 8;
7058 rbit = BIT(rates[i] % 8);
7059
7060 /* check validity */
7061 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7062 return false;
7063
7064 /* check availability */
7065 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7066 mcs[ridx] |= rbit;
7067 else
7068 return false;
7069 }
7070
7071 return true;
7072 }
7073
7074 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7075 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7076 .len = NL80211_MAX_SUPP_RATES },
7077 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7078 .len = NL80211_MAX_SUPP_HT_RATES },
7079 };
7080
7081 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7082 struct genl_info *info)
7083 {
7084 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7086 struct cfg80211_bitrate_mask mask;
7087 int rem, i;
7088 struct net_device *dev = info->user_ptr[1];
7089 struct nlattr *tx_rates;
7090 struct ieee80211_supported_band *sband;
7091
7092 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7093 return -EINVAL;
7094
7095 if (!rdev->ops->set_bitrate_mask)
7096 return -EOPNOTSUPP;
7097
7098 memset(&mask, 0, sizeof(mask));
7099 /* Default to all rates enabled */
7100 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7101 sband = rdev->wiphy.bands[i];
7102 mask.control[i].legacy =
7103 sband ? (1 << sband->n_bitrates) - 1 : 0;
7104 if (sband)
7105 memcpy(mask.control[i].mcs,
7106 sband->ht_cap.mcs.rx_mask,
7107 sizeof(mask.control[i].mcs));
7108 else
7109 memset(mask.control[i].mcs, 0,
7110 sizeof(mask.control[i].mcs));
7111 }
7112
7113 /*
7114 * The nested attribute uses enum nl80211_band as the index. This maps
7115 * directly to the enum ieee80211_band values used in cfg80211.
7116 */
7117 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7118 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7119 {
7120 enum ieee80211_band band = nla_type(tx_rates);
7121 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7122 return -EINVAL;
7123 sband = rdev->wiphy.bands[band];
7124 if (sband == NULL)
7125 return -EINVAL;
7126 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7127 nla_len(tx_rates), nl80211_txattr_policy);
7128 if (tb[NL80211_TXRATE_LEGACY]) {
7129 mask.control[band].legacy = rateset_to_mask(
7130 sband,
7131 nla_data(tb[NL80211_TXRATE_LEGACY]),
7132 nla_len(tb[NL80211_TXRATE_LEGACY]));
7133 if ((mask.control[band].legacy == 0) &&
7134 nla_len(tb[NL80211_TXRATE_LEGACY]))
7135 return -EINVAL;
7136 }
7137 if (tb[NL80211_TXRATE_MCS]) {
7138 if (!ht_rateset_to_mask(
7139 sband,
7140 nla_data(tb[NL80211_TXRATE_MCS]),
7141 nla_len(tb[NL80211_TXRATE_MCS]),
7142 mask.control[band].mcs))
7143 return -EINVAL;
7144 }
7145
7146 if (mask.control[band].legacy == 0) {
7147 /* don't allow empty legacy rates if HT
7148 * is not even supported. */
7149 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7150 return -EINVAL;
7151
7152 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7153 if (mask.control[band].mcs[i])
7154 break;
7155
7156 /* legacy and mcs rates may not be both empty */
7157 if (i == IEEE80211_HT_MCS_MASK_LEN)
7158 return -EINVAL;
7159 }
7160 }
7161
7162 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7163 }
7164
7165 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7166 {
7167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7168 struct wireless_dev *wdev = info->user_ptr[1];
7169 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7170
7171 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7172 return -EINVAL;
7173
7174 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7175 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7176
7177 switch (wdev->iftype) {
7178 case NL80211_IFTYPE_STATION:
7179 case NL80211_IFTYPE_ADHOC:
7180 case NL80211_IFTYPE_P2P_CLIENT:
7181 case NL80211_IFTYPE_AP:
7182 case NL80211_IFTYPE_AP_VLAN:
7183 case NL80211_IFTYPE_MESH_POINT:
7184 case NL80211_IFTYPE_P2P_GO:
7185 case NL80211_IFTYPE_P2P_DEVICE:
7186 break;
7187 default:
7188 return -EOPNOTSUPP;
7189 }
7190
7191 /* not much point in registering if we can't reply */
7192 if (!rdev->ops->mgmt_tx)
7193 return -EOPNOTSUPP;
7194
7195 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7196 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7197 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7198 }
7199
7200 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7201 {
7202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7203 struct wireless_dev *wdev = info->user_ptr[1];
7204 struct cfg80211_chan_def chandef;
7205 int err;
7206 void *hdr = NULL;
7207 u64 cookie;
7208 struct sk_buff *msg = NULL;
7209 unsigned int wait = 0;
7210 bool offchan, no_cck, dont_wait_for_ack;
7211
7212 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7213
7214 if (!info->attrs[NL80211_ATTR_FRAME])
7215 return -EINVAL;
7216
7217 if (!rdev->ops->mgmt_tx)
7218 return -EOPNOTSUPP;
7219
7220 switch (wdev->iftype) {
7221 case NL80211_IFTYPE_STATION:
7222 case NL80211_IFTYPE_ADHOC:
7223 case NL80211_IFTYPE_P2P_CLIENT:
7224 case NL80211_IFTYPE_AP:
7225 case NL80211_IFTYPE_AP_VLAN:
7226 case NL80211_IFTYPE_MESH_POINT:
7227 case NL80211_IFTYPE_P2P_GO:
7228 case NL80211_IFTYPE_P2P_DEVICE:
7229 break;
7230 default:
7231 return -EOPNOTSUPP;
7232 }
7233
7234 if (info->attrs[NL80211_ATTR_DURATION]) {
7235 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7236 return -EINVAL;
7237 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7238
7239 /*
7240 * We should wait on the channel for at least a minimum amount
7241 * of time (10ms) but no longer than the driver supports.
7242 */
7243 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7244 wait > rdev->wiphy.max_remain_on_channel_duration)
7245 return -EINVAL;
7246
7247 }
7248
7249 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7250
7251 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7252 return -EINVAL;
7253
7254 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7255
7256 err = nl80211_parse_chandef(rdev, info, &chandef);
7257 if (err)
7258 return err;
7259
7260 if (!dont_wait_for_ack) {
7261 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7262 if (!msg)
7263 return -ENOMEM;
7264
7265 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7266 NL80211_CMD_FRAME);
7267 if (!hdr) {
7268 err = -ENOBUFS;
7269 goto free_msg;
7270 }
7271 }
7272
7273 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7274 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7275 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7276 no_cck, dont_wait_for_ack, &cookie);
7277 if (err)
7278 goto free_msg;
7279
7280 if (msg) {
7281 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7282 goto nla_put_failure;
7283
7284 genlmsg_end(msg, hdr);
7285 return genlmsg_reply(msg, info);
7286 }
7287
7288 return 0;
7289
7290 nla_put_failure:
7291 err = -ENOBUFS;
7292 free_msg:
7293 nlmsg_free(msg);
7294 return err;
7295 }
7296
7297 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7298 {
7299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7300 struct wireless_dev *wdev = info->user_ptr[1];
7301 u64 cookie;
7302
7303 if (!info->attrs[NL80211_ATTR_COOKIE])
7304 return -EINVAL;
7305
7306 if (!rdev->ops->mgmt_tx_cancel_wait)
7307 return -EOPNOTSUPP;
7308
7309 switch (wdev->iftype) {
7310 case NL80211_IFTYPE_STATION:
7311 case NL80211_IFTYPE_ADHOC:
7312 case NL80211_IFTYPE_P2P_CLIENT:
7313 case NL80211_IFTYPE_AP:
7314 case NL80211_IFTYPE_AP_VLAN:
7315 case NL80211_IFTYPE_P2P_GO:
7316 case NL80211_IFTYPE_P2P_DEVICE:
7317 break;
7318 default:
7319 return -EOPNOTSUPP;
7320 }
7321
7322 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7323
7324 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7325 }
7326
7327 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7328 {
7329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7330 struct wireless_dev *wdev;
7331 struct net_device *dev = info->user_ptr[1];
7332 u8 ps_state;
7333 bool state;
7334 int err;
7335
7336 if (!info->attrs[NL80211_ATTR_PS_STATE])
7337 return -EINVAL;
7338
7339 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7340
7341 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7342 return -EINVAL;
7343
7344 wdev = dev->ieee80211_ptr;
7345
7346 if (!rdev->ops->set_power_mgmt)
7347 return -EOPNOTSUPP;
7348
7349 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7350
7351 if (state == wdev->ps)
7352 return 0;
7353
7354 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7355 if (!err)
7356 wdev->ps = state;
7357 return err;
7358 }
7359
7360 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7361 {
7362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7363 enum nl80211_ps_state ps_state;
7364 struct wireless_dev *wdev;
7365 struct net_device *dev = info->user_ptr[1];
7366 struct sk_buff *msg;
7367 void *hdr;
7368 int err;
7369
7370 wdev = dev->ieee80211_ptr;
7371
7372 if (!rdev->ops->set_power_mgmt)
7373 return -EOPNOTSUPP;
7374
7375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7376 if (!msg)
7377 return -ENOMEM;
7378
7379 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7380 NL80211_CMD_GET_POWER_SAVE);
7381 if (!hdr) {
7382 err = -ENOBUFS;
7383 goto free_msg;
7384 }
7385
7386 if (wdev->ps)
7387 ps_state = NL80211_PS_ENABLED;
7388 else
7389 ps_state = NL80211_PS_DISABLED;
7390
7391 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7392 goto nla_put_failure;
7393
7394 genlmsg_end(msg, hdr);
7395 return genlmsg_reply(msg, info);
7396
7397 nla_put_failure:
7398 err = -ENOBUFS;
7399 free_msg:
7400 nlmsg_free(msg);
7401 return err;
7402 }
7403
7404 static struct nla_policy
7405 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7406 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7407 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7408 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7409 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7410 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7411 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7412 };
7413
7414 static int nl80211_set_cqm_txe(struct genl_info *info,
7415 u32 rate, u32 pkts, u32 intvl)
7416 {
7417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7418 struct wireless_dev *wdev;
7419 struct net_device *dev = info->user_ptr[1];
7420
7421 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7422 return -EINVAL;
7423
7424 wdev = dev->ieee80211_ptr;
7425
7426 if (!rdev->ops->set_cqm_txe_config)
7427 return -EOPNOTSUPP;
7428
7429 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7430 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7431 return -EOPNOTSUPP;
7432
7433 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7434 }
7435
7436 static int nl80211_set_cqm_rssi(struct genl_info *info,
7437 s32 threshold, u32 hysteresis)
7438 {
7439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7440 struct wireless_dev *wdev;
7441 struct net_device *dev = info->user_ptr[1];
7442
7443 if (threshold > 0)
7444 return -EINVAL;
7445
7446 wdev = dev->ieee80211_ptr;
7447
7448 if (!rdev->ops->set_cqm_rssi_config)
7449 return -EOPNOTSUPP;
7450
7451 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7452 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7453 return -EOPNOTSUPP;
7454
7455 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7456 }
7457
7458 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7459 {
7460 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7461 struct nlattr *cqm;
7462 int err;
7463
7464 cqm = info->attrs[NL80211_ATTR_CQM];
7465 if (!cqm) {
7466 err = -EINVAL;
7467 goto out;
7468 }
7469
7470 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7471 nl80211_attr_cqm_policy);
7472 if (err)
7473 goto out;
7474
7475 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7476 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7477 s32 threshold;
7478 u32 hysteresis;
7479 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7480 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7481 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7482 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7483 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7484 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7485 u32 rate, pkts, intvl;
7486 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7487 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7488 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7489 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7490 } else
7491 err = -EINVAL;
7492
7493 out:
7494 return err;
7495 }
7496
7497 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7498 {
7499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7500 struct net_device *dev = info->user_ptr[1];
7501 struct mesh_config cfg;
7502 struct mesh_setup setup;
7503 int err;
7504
7505 /* start with default */
7506 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7507 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7508
7509 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7510 /* and parse parameters if given */
7511 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7512 if (err)
7513 return err;
7514 }
7515
7516 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7517 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7518 return -EINVAL;
7519
7520 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7521 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7522
7523 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7524 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7525 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7526 return -EINVAL;
7527
7528 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7529 setup.beacon_interval =
7530 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7531 if (setup.beacon_interval < 10 ||
7532 setup.beacon_interval > 10000)
7533 return -EINVAL;
7534 }
7535
7536 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7537 setup.dtim_period =
7538 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7539 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7540 return -EINVAL;
7541 }
7542
7543 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7544 /* parse additional setup parameters if given */
7545 err = nl80211_parse_mesh_setup(info, &setup);
7546 if (err)
7547 return err;
7548 }
7549
7550 if (setup.user_mpm)
7551 cfg.auto_open_plinks = false;
7552
7553 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7554 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7555 if (err)
7556 return err;
7557 } else {
7558 /* cfg80211_join_mesh() will sort it out */
7559 setup.chandef.chan = NULL;
7560 }
7561
7562 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7563 }
7564
7565 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7566 {
7567 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7568 struct net_device *dev = info->user_ptr[1];
7569
7570 return cfg80211_leave_mesh(rdev, dev);
7571 }
7572
7573 #ifdef CONFIG_PM
7574 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7575 struct cfg80211_registered_device *rdev)
7576 {
7577 struct nlattr *nl_pats, *nl_pat;
7578 int i, pat_len;
7579
7580 if (!rdev->wowlan->n_patterns)
7581 return 0;
7582
7583 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7584 if (!nl_pats)
7585 return -ENOBUFS;
7586
7587 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
7588 nl_pat = nla_nest_start(msg, i + 1);
7589 if (!nl_pat)
7590 return -ENOBUFS;
7591 pat_len = rdev->wowlan->patterns[i].pattern_len;
7592 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7593 DIV_ROUND_UP(pat_len, 8),
7594 rdev->wowlan->patterns[i].mask) ||
7595 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7596 pat_len, rdev->wowlan->patterns[i].pattern) ||
7597 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7598 rdev->wowlan->patterns[i].pkt_offset))
7599 return -ENOBUFS;
7600 nla_nest_end(msg, nl_pat);
7601 }
7602 nla_nest_end(msg, nl_pats);
7603
7604 return 0;
7605 }
7606
7607 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7608 struct cfg80211_wowlan_tcp *tcp)
7609 {
7610 struct nlattr *nl_tcp;
7611
7612 if (!tcp)
7613 return 0;
7614
7615 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7616 if (!nl_tcp)
7617 return -ENOBUFS;
7618
7619 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7620 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7621 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7622 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7623 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7624 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7625 tcp->payload_len, tcp->payload) ||
7626 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7627 tcp->data_interval) ||
7628 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7629 tcp->wake_len, tcp->wake_data) ||
7630 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7631 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7632 return -ENOBUFS;
7633
7634 if (tcp->payload_seq.len &&
7635 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7636 sizeof(tcp->payload_seq), &tcp->payload_seq))
7637 return -ENOBUFS;
7638
7639 if (tcp->payload_tok.len &&
7640 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7641 sizeof(tcp->payload_tok) + tcp->tokens_size,
7642 &tcp->payload_tok))
7643 return -ENOBUFS;
7644
7645 nla_nest_end(msg, nl_tcp);
7646
7647 return 0;
7648 }
7649
7650 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7651 {
7652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7653 struct sk_buff *msg;
7654 void *hdr;
7655 u32 size = NLMSG_DEFAULT_SIZE;
7656
7657 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7658 !rdev->wiphy.wowlan.tcp)
7659 return -EOPNOTSUPP;
7660
7661 if (rdev->wowlan && rdev->wowlan->tcp) {
7662 /* adjust size to have room for all the data */
7663 size += rdev->wowlan->tcp->tokens_size +
7664 rdev->wowlan->tcp->payload_len +
7665 rdev->wowlan->tcp->wake_len +
7666 rdev->wowlan->tcp->wake_len / 8;
7667 }
7668
7669 msg = nlmsg_new(size, GFP_KERNEL);
7670 if (!msg)
7671 return -ENOMEM;
7672
7673 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7674 NL80211_CMD_GET_WOWLAN);
7675 if (!hdr)
7676 goto nla_put_failure;
7677
7678 if (rdev->wowlan) {
7679 struct nlattr *nl_wowlan;
7680
7681 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7682 if (!nl_wowlan)
7683 goto nla_put_failure;
7684
7685 if ((rdev->wowlan->any &&
7686 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7687 (rdev->wowlan->disconnect &&
7688 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7689 (rdev->wowlan->magic_pkt &&
7690 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7691 (rdev->wowlan->gtk_rekey_failure &&
7692 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7693 (rdev->wowlan->eap_identity_req &&
7694 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7695 (rdev->wowlan->four_way_handshake &&
7696 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7697 (rdev->wowlan->rfkill_release &&
7698 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7699 goto nla_put_failure;
7700
7701 if (nl80211_send_wowlan_patterns(msg, rdev))
7702 goto nla_put_failure;
7703
7704 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
7705 goto nla_put_failure;
7706
7707 nla_nest_end(msg, nl_wowlan);
7708 }
7709
7710 genlmsg_end(msg, hdr);
7711 return genlmsg_reply(msg, info);
7712
7713 nla_put_failure:
7714 nlmsg_free(msg);
7715 return -ENOBUFS;
7716 }
7717
7718 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7719 struct nlattr *attr,
7720 struct cfg80211_wowlan *trig)
7721 {
7722 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7723 struct cfg80211_wowlan_tcp *cfg;
7724 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7725 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7726 u32 size;
7727 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7728 int err, port;
7729
7730 if (!rdev->wiphy.wowlan.tcp)
7731 return -EINVAL;
7732
7733 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7734 nla_data(attr), nla_len(attr),
7735 nl80211_wowlan_tcp_policy);
7736 if (err)
7737 return err;
7738
7739 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7740 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7741 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7742 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7743 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7744 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7745 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7746 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7747 return -EINVAL;
7748
7749 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7750 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7751 return -EINVAL;
7752
7753 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7754 rdev->wiphy.wowlan.tcp->data_interval_max ||
7755 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7756 return -EINVAL;
7757
7758 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7759 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7760 return -EINVAL;
7761
7762 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7763 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7764 return -EINVAL;
7765
7766 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7767 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7768
7769 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7770 tokens_size = tokln - sizeof(*tok);
7771
7772 if (!tok->len || tokens_size % tok->len)
7773 return -EINVAL;
7774 if (!rdev->wiphy.wowlan.tcp->tok)
7775 return -EINVAL;
7776 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7777 return -EINVAL;
7778 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7779 return -EINVAL;
7780 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7781 return -EINVAL;
7782 if (tok->offset + tok->len > data_size)
7783 return -EINVAL;
7784 }
7785
7786 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7787 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7788 if (!rdev->wiphy.wowlan.tcp->seq)
7789 return -EINVAL;
7790 if (seq->len == 0 || seq->len > 4)
7791 return -EINVAL;
7792 if (seq->len + seq->offset > data_size)
7793 return -EINVAL;
7794 }
7795
7796 size = sizeof(*cfg);
7797 size += data_size;
7798 size += wake_size + wake_mask_size;
7799 size += tokens_size;
7800
7801 cfg = kzalloc(size, GFP_KERNEL);
7802 if (!cfg)
7803 return -ENOMEM;
7804 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7805 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7806 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7807 ETH_ALEN);
7808 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7809 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7810 else
7811 port = 0;
7812 #ifdef CONFIG_INET
7813 /* allocate a socket and port for it and use it */
7814 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7815 IPPROTO_TCP, &cfg->sock, 1);
7816 if (err) {
7817 kfree(cfg);
7818 return err;
7819 }
7820 if (inet_csk_get_port(cfg->sock->sk, port)) {
7821 sock_release(cfg->sock);
7822 kfree(cfg);
7823 return -EADDRINUSE;
7824 }
7825 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7826 #else
7827 if (!port) {
7828 kfree(cfg);
7829 return -EINVAL;
7830 }
7831 cfg->src_port = port;
7832 #endif
7833
7834 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7835 cfg->payload_len = data_size;
7836 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7837 memcpy((void *)cfg->payload,
7838 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7839 data_size);
7840 if (seq)
7841 cfg->payload_seq = *seq;
7842 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7843 cfg->wake_len = wake_size;
7844 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7845 memcpy((void *)cfg->wake_data,
7846 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7847 wake_size);
7848 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7849 data_size + wake_size;
7850 memcpy((void *)cfg->wake_mask,
7851 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7852 wake_mask_size);
7853 if (tok) {
7854 cfg->tokens_size = tokens_size;
7855 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7856 }
7857
7858 trig->tcp = cfg;
7859
7860 return 0;
7861 }
7862
7863 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7864 {
7865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7866 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7867 struct cfg80211_wowlan new_triggers = {};
7868 struct cfg80211_wowlan *ntrig;
7869 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7870 int err, i;
7871 bool prev_enabled = rdev->wowlan;
7872
7873 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7874 !rdev->wiphy.wowlan.tcp)
7875 return -EOPNOTSUPP;
7876
7877 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7878 cfg80211_rdev_free_wowlan(rdev);
7879 rdev->wowlan = NULL;
7880 goto set_wakeup;
7881 }
7882
7883 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7884 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7885 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7886 nl80211_wowlan_policy);
7887 if (err)
7888 return err;
7889
7890 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7891 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7892 return -EINVAL;
7893 new_triggers.any = true;
7894 }
7895
7896 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7897 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7898 return -EINVAL;
7899 new_triggers.disconnect = true;
7900 }
7901
7902 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7903 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7904 return -EINVAL;
7905 new_triggers.magic_pkt = true;
7906 }
7907
7908 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7909 return -EINVAL;
7910
7911 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7912 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7913 return -EINVAL;
7914 new_triggers.gtk_rekey_failure = true;
7915 }
7916
7917 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7918 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7919 return -EINVAL;
7920 new_triggers.eap_identity_req = true;
7921 }
7922
7923 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7924 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7925 return -EINVAL;
7926 new_triggers.four_way_handshake = true;
7927 }
7928
7929 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7930 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7931 return -EINVAL;
7932 new_triggers.rfkill_release = true;
7933 }
7934
7935 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7936 struct nlattr *pat;
7937 int n_patterns = 0;
7938 int rem, pat_len, mask_len, pkt_offset;
7939 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7940
7941 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7942 rem)
7943 n_patterns++;
7944 if (n_patterns > wowlan->n_patterns)
7945 return -EINVAL;
7946
7947 new_triggers.patterns = kcalloc(n_patterns,
7948 sizeof(new_triggers.patterns[0]),
7949 GFP_KERNEL);
7950 if (!new_triggers.patterns)
7951 return -ENOMEM;
7952
7953 new_triggers.n_patterns = n_patterns;
7954 i = 0;
7955
7956 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7957 rem) {
7958 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7959 nla_data(pat), nla_len(pat), NULL);
7960 err = -EINVAL;
7961 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7962 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7963 goto error;
7964 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7965 mask_len = DIV_ROUND_UP(pat_len, 8);
7966 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7967 mask_len)
7968 goto error;
7969 if (pat_len > wowlan->pattern_max_len ||
7970 pat_len < wowlan->pattern_min_len)
7971 goto error;
7972
7973 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7974 pkt_offset = 0;
7975 else
7976 pkt_offset = nla_get_u32(
7977 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7978 if (pkt_offset > wowlan->max_pkt_offset)
7979 goto error;
7980 new_triggers.patterns[i].pkt_offset = pkt_offset;
7981
7982 new_triggers.patterns[i].mask =
7983 kmalloc(mask_len + pat_len, GFP_KERNEL);
7984 if (!new_triggers.patterns[i].mask) {
7985 err = -ENOMEM;
7986 goto error;
7987 }
7988 new_triggers.patterns[i].pattern =
7989 new_triggers.patterns[i].mask + mask_len;
7990 memcpy(new_triggers.patterns[i].mask,
7991 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7992 mask_len);
7993 new_triggers.patterns[i].pattern_len = pat_len;
7994 memcpy(new_triggers.patterns[i].pattern,
7995 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7996 pat_len);
7997 i++;
7998 }
7999 }
8000
8001 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8002 err = nl80211_parse_wowlan_tcp(
8003 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8004 &new_triggers);
8005 if (err)
8006 goto error;
8007 }
8008
8009 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8010 if (!ntrig) {
8011 err = -ENOMEM;
8012 goto error;
8013 }
8014 cfg80211_rdev_free_wowlan(rdev);
8015 rdev->wowlan = ntrig;
8016
8017 set_wakeup:
8018 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
8019 rdev_set_wakeup(rdev, rdev->wowlan);
8020
8021 return 0;
8022 error:
8023 for (i = 0; i < new_triggers.n_patterns; i++)
8024 kfree(new_triggers.patterns[i].mask);
8025 kfree(new_triggers.patterns);
8026 if (new_triggers.tcp && new_triggers.tcp->sock)
8027 sock_release(new_triggers.tcp->sock);
8028 kfree(new_triggers.tcp);
8029 return err;
8030 }
8031 #endif
8032
8033 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8034 {
8035 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8036 struct net_device *dev = info->user_ptr[1];
8037 struct wireless_dev *wdev = dev->ieee80211_ptr;
8038 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8039 struct cfg80211_gtk_rekey_data rekey_data;
8040 int err;
8041
8042 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8043 return -EINVAL;
8044
8045 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8046 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8047 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8048 nl80211_rekey_policy);
8049 if (err)
8050 return err;
8051
8052 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8053 return -ERANGE;
8054 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8055 return -ERANGE;
8056 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8057 return -ERANGE;
8058
8059 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8060 NL80211_KEK_LEN);
8061 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8062 NL80211_KCK_LEN);
8063 memcpy(rekey_data.replay_ctr,
8064 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8065 NL80211_REPLAY_CTR_LEN);
8066
8067 wdev_lock(wdev);
8068 if (!wdev->current_bss) {
8069 err = -ENOTCONN;
8070 goto out;
8071 }
8072
8073 if (!rdev->ops->set_rekey_data) {
8074 err = -EOPNOTSUPP;
8075 goto out;
8076 }
8077
8078 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8079 out:
8080 wdev_unlock(wdev);
8081 return err;
8082 }
8083
8084 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8085 struct genl_info *info)
8086 {
8087 struct net_device *dev = info->user_ptr[1];
8088 struct wireless_dev *wdev = dev->ieee80211_ptr;
8089
8090 if (wdev->iftype != NL80211_IFTYPE_AP &&
8091 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8092 return -EINVAL;
8093
8094 if (wdev->ap_unexpected_nlportid)
8095 return -EBUSY;
8096
8097 wdev->ap_unexpected_nlportid = info->snd_portid;
8098 return 0;
8099 }
8100
8101 static int nl80211_probe_client(struct sk_buff *skb,
8102 struct genl_info *info)
8103 {
8104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8105 struct net_device *dev = info->user_ptr[1];
8106 struct wireless_dev *wdev = dev->ieee80211_ptr;
8107 struct sk_buff *msg;
8108 void *hdr;
8109 const u8 *addr;
8110 u64 cookie;
8111 int err;
8112
8113 if (wdev->iftype != NL80211_IFTYPE_AP &&
8114 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8115 return -EOPNOTSUPP;
8116
8117 if (!info->attrs[NL80211_ATTR_MAC])
8118 return -EINVAL;
8119
8120 if (!rdev->ops->probe_client)
8121 return -EOPNOTSUPP;
8122
8123 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8124 if (!msg)
8125 return -ENOMEM;
8126
8127 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8128 NL80211_CMD_PROBE_CLIENT);
8129 if (!hdr) {
8130 err = -ENOBUFS;
8131 goto free_msg;
8132 }
8133
8134 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8135
8136 err = rdev_probe_client(rdev, dev, addr, &cookie);
8137 if (err)
8138 goto free_msg;
8139
8140 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8141 goto nla_put_failure;
8142
8143 genlmsg_end(msg, hdr);
8144
8145 return genlmsg_reply(msg, info);
8146
8147 nla_put_failure:
8148 err = -ENOBUFS;
8149 free_msg:
8150 nlmsg_free(msg);
8151 return err;
8152 }
8153
8154 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8155 {
8156 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8157 struct cfg80211_beacon_registration *reg, *nreg;
8158 int rv;
8159
8160 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8161 return -EOPNOTSUPP;
8162
8163 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8164 if (!nreg)
8165 return -ENOMEM;
8166
8167 /* First, check if already registered. */
8168 spin_lock_bh(&rdev->beacon_registrations_lock);
8169 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8170 if (reg->nlportid == info->snd_portid) {
8171 rv = -EALREADY;
8172 goto out_err;
8173 }
8174 }
8175 /* Add it to the list */
8176 nreg->nlportid = info->snd_portid;
8177 list_add(&nreg->list, &rdev->beacon_registrations);
8178
8179 spin_unlock_bh(&rdev->beacon_registrations_lock);
8180
8181 return 0;
8182 out_err:
8183 spin_unlock_bh(&rdev->beacon_registrations_lock);
8184 kfree(nreg);
8185 return rv;
8186 }
8187
8188 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8189 {
8190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8191 struct wireless_dev *wdev = info->user_ptr[1];
8192 int err;
8193
8194 if (!rdev->ops->start_p2p_device)
8195 return -EOPNOTSUPP;
8196
8197 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8198 return -EOPNOTSUPP;
8199
8200 if (wdev->p2p_started)
8201 return 0;
8202
8203 mutex_lock(&rdev->devlist_mtx);
8204 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8205 mutex_unlock(&rdev->devlist_mtx);
8206 if (err)
8207 return err;
8208
8209 err = rdev_start_p2p_device(rdev, wdev);
8210 if (err)
8211 return err;
8212
8213 wdev->p2p_started = true;
8214 mutex_lock(&rdev->devlist_mtx);
8215 rdev->opencount++;
8216 mutex_unlock(&rdev->devlist_mtx);
8217
8218 return 0;
8219 }
8220
8221 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8222 {
8223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8224 struct wireless_dev *wdev = info->user_ptr[1];
8225
8226 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8227 return -EOPNOTSUPP;
8228
8229 if (!rdev->ops->stop_p2p_device)
8230 return -EOPNOTSUPP;
8231
8232 mutex_lock(&rdev->devlist_mtx);
8233 mutex_lock(&rdev->sched_scan_mtx);
8234 cfg80211_stop_p2p_device(rdev, wdev);
8235 mutex_unlock(&rdev->sched_scan_mtx);
8236 mutex_unlock(&rdev->devlist_mtx);
8237
8238 return 0;
8239 }
8240
8241 static int nl80211_get_protocol_features(struct sk_buff *skb,
8242 struct genl_info *info)
8243 {
8244 void *hdr;
8245 struct sk_buff *msg;
8246
8247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8248 if (!msg)
8249 return -ENOMEM;
8250
8251 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8252 NL80211_CMD_GET_PROTOCOL_FEATURES);
8253 if (!hdr)
8254 goto nla_put_failure;
8255
8256 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8257 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8258 goto nla_put_failure;
8259
8260 genlmsg_end(msg, hdr);
8261 return genlmsg_reply(msg, info);
8262
8263 nla_put_failure:
8264 kfree_skb(msg);
8265 return -ENOBUFS;
8266 }
8267
8268 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8269 {
8270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8271 struct cfg80211_update_ft_ies_params ft_params;
8272 struct net_device *dev = info->user_ptr[1];
8273
8274 if (!rdev->ops->update_ft_ies)
8275 return -EOPNOTSUPP;
8276
8277 if (!info->attrs[NL80211_ATTR_MDID] ||
8278 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8279 return -EINVAL;
8280
8281 memset(&ft_params, 0, sizeof(ft_params));
8282 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8283 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8284 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8285
8286 return rdev_update_ft_ies(rdev, dev, &ft_params);
8287 }
8288
8289 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8290 struct genl_info *info)
8291 {
8292 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8293 struct wireless_dev *wdev = info->user_ptr[1];
8294 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8295 u16 duration;
8296 int ret;
8297
8298 if (!rdev->ops->crit_proto_start)
8299 return -EOPNOTSUPP;
8300
8301 if (WARN_ON(!rdev->ops->crit_proto_stop))
8302 return -EINVAL;
8303
8304 if (rdev->crit_proto_nlportid)
8305 return -EBUSY;
8306
8307 /* determine protocol if provided */
8308 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8309 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8310
8311 if (proto >= NUM_NL80211_CRIT_PROTO)
8312 return -EINVAL;
8313
8314 /* timeout must be provided */
8315 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8316 return -EINVAL;
8317
8318 duration =
8319 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8320
8321 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8322 return -ERANGE;
8323
8324 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8325 if (!ret)
8326 rdev->crit_proto_nlportid = info->snd_portid;
8327
8328 return ret;
8329 }
8330
8331 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8332 struct genl_info *info)
8333 {
8334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8335 struct wireless_dev *wdev = info->user_ptr[1];
8336
8337 if (!rdev->ops->crit_proto_stop)
8338 return -EOPNOTSUPP;
8339
8340 if (rdev->crit_proto_nlportid) {
8341 rdev->crit_proto_nlportid = 0;
8342 rdev_crit_proto_stop(rdev, wdev);
8343 }
8344 return 0;
8345 }
8346
8347 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
8348 {
8349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8350 struct wireless_dev *wdev =
8351 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8352 int i, err;
8353 u32 vid, subcmd;
8354
8355 if (!rdev || !rdev->wiphy.vendor_commands)
8356 return -EOPNOTSUPP;
8357
8358 if (IS_ERR(wdev)) {
8359 err = PTR_ERR(wdev);
8360 if (err != -EINVAL)
8361 return err;
8362 wdev = NULL;
8363 } else if (wdev->wiphy != &rdev->wiphy) {
8364 return -EINVAL;
8365 }
8366
8367 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
8368 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
8369 return -EINVAL;
8370
8371 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
8372 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
8373 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
8374 const struct wiphy_vendor_command *vcmd;
8375 void *data = NULL;
8376 int len = 0;
8377
8378 vcmd = &rdev->wiphy.vendor_commands[i];
8379
8380 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
8381 continue;
8382
8383 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
8384 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
8385 if (!wdev)
8386 return -EINVAL;
8387 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
8388 !wdev->netdev)
8389 return -EINVAL;
8390
8391 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
8392 if (!wdev->netdev ||
8393 !netif_running(wdev->netdev))
8394 return -ENETDOWN;
8395 }
8396 } else {
8397 wdev = NULL;
8398 }
8399
8400 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
8401 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8402 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8403 }
8404
8405 rdev->cur_cmd_info = info;
8406 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
8407 data, len);
8408 rdev->cur_cmd_info = NULL;
8409 return err;
8410 }
8411
8412 return -EOPNOTSUPP;
8413 }
8414
8415 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
8416 enum nl80211_commands cmd,
8417 enum nl80211_attrs attr,
8418 int approxlen)
8419 {
8420 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8421
8422 if (WARN_ON(!rdev->cur_cmd_info))
8423 return NULL;
8424
8425 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
8426 0,
8427 0,
8428 cmd, attr, NULL, GFP_KERNEL);
8429 }
8430 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
8431
8432 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
8433 {
8434 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8435 void *hdr = ((void **)skb->cb)[1];
8436 struct nlattr *data = ((void **)skb->cb)[2];
8437
8438 if (WARN_ON(!rdev->cur_cmd_info)) {
8439 kfree_skb(skb);
8440 return -EINVAL;
8441 }
8442
8443 nla_nest_end(skb, data);
8444 genlmsg_end(skb, hdr);
8445 return genlmsg_reply(skb, rdev->cur_cmd_info);
8446 }
8447 EXPORT_SYMBOL(cfg80211_vendor_cmd_reply);
8448
8449 #define NL80211_FLAG_NEED_WIPHY 0x01
8450 #define NL80211_FLAG_NEED_NETDEV 0x02
8451 #define NL80211_FLAG_NEED_RTNL 0x04
8452 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8453 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8454 NL80211_FLAG_CHECK_NETDEV_UP)
8455 #define NL80211_FLAG_NEED_WDEV 0x10
8456 /* If a netdev is associated, it must be UP, P2P must be started */
8457 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8458 NL80211_FLAG_CHECK_NETDEV_UP)
8459
8460 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8461 struct genl_info *info)
8462 {
8463 struct cfg80211_registered_device *rdev;
8464 struct wireless_dev *wdev;
8465 struct net_device *dev;
8466 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8467
8468 if (rtnl)
8469 rtnl_lock();
8470
8471 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8472 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8473 if (IS_ERR(rdev)) {
8474 if (rtnl)
8475 rtnl_unlock();
8476 return PTR_ERR(rdev);
8477 }
8478 info->user_ptr[0] = rdev;
8479 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8480 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8481 mutex_lock(&cfg80211_mutex);
8482 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8483 info->attrs);
8484 if (IS_ERR(wdev)) {
8485 mutex_unlock(&cfg80211_mutex);
8486 if (rtnl)
8487 rtnl_unlock();
8488 return PTR_ERR(wdev);
8489 }
8490
8491 dev = wdev->netdev;
8492 rdev = wiphy_to_dev(wdev->wiphy);
8493
8494 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8495 if (!dev) {
8496 mutex_unlock(&cfg80211_mutex);
8497 if (rtnl)
8498 rtnl_unlock();
8499 return -EINVAL;
8500 }
8501
8502 info->user_ptr[1] = dev;
8503 } else {
8504 info->user_ptr[1] = wdev;
8505 }
8506
8507 if (dev) {
8508 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8509 !netif_running(dev)) {
8510 mutex_unlock(&cfg80211_mutex);
8511 if (rtnl)
8512 rtnl_unlock();
8513 return -ENETDOWN;
8514 }
8515
8516 dev_hold(dev);
8517 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8518 if (!wdev->p2p_started) {
8519 mutex_unlock(&cfg80211_mutex);
8520 if (rtnl)
8521 rtnl_unlock();
8522 return -ENETDOWN;
8523 }
8524 }
8525
8526 cfg80211_lock_rdev(rdev);
8527
8528 mutex_unlock(&cfg80211_mutex);
8529
8530 info->user_ptr[0] = rdev;
8531 }
8532
8533 return 0;
8534 }
8535
8536 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8537 struct genl_info *info)
8538 {
8539 if (info->user_ptr[0])
8540 cfg80211_unlock_rdev(info->user_ptr[0]);
8541 if (info->user_ptr[1]) {
8542 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8543 struct wireless_dev *wdev = info->user_ptr[1];
8544
8545 if (wdev->netdev)
8546 dev_put(wdev->netdev);
8547 } else {
8548 dev_put(info->user_ptr[1]);
8549 }
8550 }
8551 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8552 rtnl_unlock();
8553 }
8554
8555 static struct genl_ops nl80211_ops[] = {
8556 {
8557 .cmd = NL80211_CMD_GET_WIPHY,
8558 .doit = nl80211_get_wiphy,
8559 .dumpit = nl80211_dump_wiphy,
8560 .policy = nl80211_policy,
8561 /* can be retrieved by unprivileged users */
8562 .internal_flags = NL80211_FLAG_NEED_WIPHY,
8563 },
8564 {
8565 .cmd = NL80211_CMD_SET_WIPHY,
8566 .doit = nl80211_set_wiphy,
8567 .policy = nl80211_policy,
8568 .flags = GENL_ADMIN_PERM,
8569 .internal_flags = NL80211_FLAG_NEED_RTNL,
8570 },
8571 {
8572 .cmd = NL80211_CMD_GET_INTERFACE,
8573 .doit = nl80211_get_interface,
8574 .dumpit = nl80211_dump_interface,
8575 .policy = nl80211_policy,
8576 /* can be retrieved by unprivileged users */
8577 .internal_flags = NL80211_FLAG_NEED_WDEV,
8578 },
8579 {
8580 .cmd = NL80211_CMD_SET_INTERFACE,
8581 .doit = nl80211_set_interface,
8582 .policy = nl80211_policy,
8583 .flags = GENL_ADMIN_PERM,
8584 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8585 NL80211_FLAG_NEED_RTNL,
8586 },
8587 {
8588 .cmd = NL80211_CMD_NEW_INTERFACE,
8589 .doit = nl80211_new_interface,
8590 .policy = nl80211_policy,
8591 .flags = GENL_ADMIN_PERM,
8592 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8593 NL80211_FLAG_NEED_RTNL,
8594 },
8595 {
8596 .cmd = NL80211_CMD_DEL_INTERFACE,
8597 .doit = nl80211_del_interface,
8598 .policy = nl80211_policy,
8599 .flags = GENL_ADMIN_PERM,
8600 .internal_flags = NL80211_FLAG_NEED_WDEV |
8601 NL80211_FLAG_NEED_RTNL,
8602 },
8603 {
8604 .cmd = NL80211_CMD_GET_KEY,
8605 .doit = nl80211_get_key,
8606 .policy = nl80211_policy,
8607 .flags = GENL_ADMIN_PERM,
8608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8609 NL80211_FLAG_NEED_RTNL,
8610 },
8611 {
8612 .cmd = NL80211_CMD_SET_KEY,
8613 .doit = nl80211_set_key,
8614 .policy = nl80211_policy,
8615 .flags = GENL_ADMIN_PERM,
8616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8617 NL80211_FLAG_NEED_RTNL,
8618 },
8619 {
8620 .cmd = NL80211_CMD_NEW_KEY,
8621 .doit = nl80211_new_key,
8622 .policy = nl80211_policy,
8623 .flags = GENL_ADMIN_PERM,
8624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8625 NL80211_FLAG_NEED_RTNL,
8626 },
8627 {
8628 .cmd = NL80211_CMD_DEL_KEY,
8629 .doit = nl80211_del_key,
8630 .policy = nl80211_policy,
8631 .flags = GENL_ADMIN_PERM,
8632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8633 NL80211_FLAG_NEED_RTNL,
8634 },
8635 {
8636 .cmd = NL80211_CMD_SET_BEACON,
8637 .policy = nl80211_policy,
8638 .flags = GENL_ADMIN_PERM,
8639 .doit = nl80211_set_beacon,
8640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8641 NL80211_FLAG_NEED_RTNL,
8642 },
8643 {
8644 .cmd = NL80211_CMD_START_AP,
8645 .policy = nl80211_policy,
8646 .flags = GENL_ADMIN_PERM,
8647 .doit = nl80211_start_ap,
8648 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8649 NL80211_FLAG_NEED_RTNL,
8650 },
8651 {
8652 .cmd = NL80211_CMD_STOP_AP,
8653 .policy = nl80211_policy,
8654 .flags = GENL_ADMIN_PERM,
8655 .doit = nl80211_stop_ap,
8656 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8657 NL80211_FLAG_NEED_RTNL,
8658 },
8659 {
8660 .cmd = NL80211_CMD_GET_STATION,
8661 .doit = nl80211_get_station,
8662 .dumpit = nl80211_dump_station,
8663 .policy = nl80211_policy,
8664 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8665 NL80211_FLAG_NEED_RTNL,
8666 },
8667 {
8668 .cmd = NL80211_CMD_SET_STATION,
8669 .doit = nl80211_set_station,
8670 .policy = nl80211_policy,
8671 .flags = GENL_ADMIN_PERM,
8672 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8673 NL80211_FLAG_NEED_RTNL,
8674 },
8675 {
8676 .cmd = NL80211_CMD_NEW_STATION,
8677 .doit = nl80211_new_station,
8678 .policy = nl80211_policy,
8679 .flags = GENL_ADMIN_PERM,
8680 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8681 NL80211_FLAG_NEED_RTNL,
8682 },
8683 {
8684 .cmd = NL80211_CMD_DEL_STATION,
8685 .doit = nl80211_del_station,
8686 .policy = nl80211_policy,
8687 .flags = GENL_ADMIN_PERM,
8688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8689 NL80211_FLAG_NEED_RTNL,
8690 },
8691 {
8692 .cmd = NL80211_CMD_GET_MPATH,
8693 .doit = nl80211_get_mpath,
8694 .dumpit = nl80211_dump_mpath,
8695 .policy = nl80211_policy,
8696 .flags = GENL_ADMIN_PERM,
8697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8698 NL80211_FLAG_NEED_RTNL,
8699 },
8700 {
8701 .cmd = NL80211_CMD_SET_MPATH,
8702 .doit = nl80211_set_mpath,
8703 .policy = nl80211_policy,
8704 .flags = GENL_ADMIN_PERM,
8705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8706 NL80211_FLAG_NEED_RTNL,
8707 },
8708 {
8709 .cmd = NL80211_CMD_NEW_MPATH,
8710 .doit = nl80211_new_mpath,
8711 .policy = nl80211_policy,
8712 .flags = GENL_ADMIN_PERM,
8713 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8714 NL80211_FLAG_NEED_RTNL,
8715 },
8716 {
8717 .cmd = NL80211_CMD_DEL_MPATH,
8718 .doit = nl80211_del_mpath,
8719 .policy = nl80211_policy,
8720 .flags = GENL_ADMIN_PERM,
8721 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8722 NL80211_FLAG_NEED_RTNL,
8723 },
8724 {
8725 .cmd = NL80211_CMD_SET_BSS,
8726 .doit = nl80211_set_bss,
8727 .policy = nl80211_policy,
8728 .flags = GENL_ADMIN_PERM,
8729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8730 NL80211_FLAG_NEED_RTNL,
8731 },
8732 {
8733 .cmd = NL80211_CMD_GET_REG,
8734 .doit = nl80211_get_reg,
8735 .policy = nl80211_policy,
8736 /* can be retrieved by unprivileged users */
8737 },
8738 {
8739 .cmd = NL80211_CMD_SET_REG,
8740 .doit = nl80211_set_reg,
8741 .policy = nl80211_policy,
8742 .flags = GENL_ADMIN_PERM,
8743 },
8744 {
8745 .cmd = NL80211_CMD_REQ_SET_REG,
8746 .doit = nl80211_req_set_reg,
8747 .policy = nl80211_policy,
8748 .flags = GENL_ADMIN_PERM,
8749 },
8750 {
8751 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8752 .doit = nl80211_get_mesh_config,
8753 .policy = nl80211_policy,
8754 /* can be retrieved by unprivileged users */
8755 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8756 NL80211_FLAG_NEED_RTNL,
8757 },
8758 {
8759 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8760 .doit = nl80211_update_mesh_config,
8761 .policy = nl80211_policy,
8762 .flags = GENL_ADMIN_PERM,
8763 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8764 NL80211_FLAG_NEED_RTNL,
8765 },
8766 {
8767 .cmd = NL80211_CMD_TRIGGER_SCAN,
8768 .doit = nl80211_trigger_scan,
8769 .policy = nl80211_policy,
8770 .flags = GENL_ADMIN_PERM,
8771 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8772 NL80211_FLAG_NEED_RTNL,
8773 },
8774 {
8775 .cmd = NL80211_CMD_GET_SCAN,
8776 .policy = nl80211_policy,
8777 .dumpit = nl80211_dump_scan,
8778 },
8779 {
8780 .cmd = NL80211_CMD_START_SCHED_SCAN,
8781 .doit = nl80211_start_sched_scan,
8782 .policy = nl80211_policy,
8783 .flags = GENL_ADMIN_PERM,
8784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8785 NL80211_FLAG_NEED_RTNL,
8786 },
8787 {
8788 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8789 .doit = nl80211_stop_sched_scan,
8790 .policy = nl80211_policy,
8791 .flags = GENL_ADMIN_PERM,
8792 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8793 NL80211_FLAG_NEED_RTNL,
8794 },
8795 {
8796 .cmd = NL80211_CMD_AUTHENTICATE,
8797 .doit = nl80211_authenticate,
8798 .policy = nl80211_policy,
8799 .flags = GENL_ADMIN_PERM,
8800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8801 NL80211_FLAG_NEED_RTNL,
8802 },
8803 {
8804 .cmd = NL80211_CMD_ASSOCIATE,
8805 .doit = nl80211_associate,
8806 .policy = nl80211_policy,
8807 .flags = GENL_ADMIN_PERM,
8808 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8809 NL80211_FLAG_NEED_RTNL,
8810 },
8811 {
8812 .cmd = NL80211_CMD_DEAUTHENTICATE,
8813 .doit = nl80211_deauthenticate,
8814 .policy = nl80211_policy,
8815 .flags = GENL_ADMIN_PERM,
8816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8817 NL80211_FLAG_NEED_RTNL,
8818 },
8819 {
8820 .cmd = NL80211_CMD_DISASSOCIATE,
8821 .doit = nl80211_disassociate,
8822 .policy = nl80211_policy,
8823 .flags = GENL_ADMIN_PERM,
8824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8825 NL80211_FLAG_NEED_RTNL,
8826 },
8827 {
8828 .cmd = NL80211_CMD_JOIN_IBSS,
8829 .doit = nl80211_join_ibss,
8830 .policy = nl80211_policy,
8831 .flags = GENL_ADMIN_PERM,
8832 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8833 NL80211_FLAG_NEED_RTNL,
8834 },
8835 {
8836 .cmd = NL80211_CMD_LEAVE_IBSS,
8837 .doit = nl80211_leave_ibss,
8838 .policy = nl80211_policy,
8839 .flags = GENL_ADMIN_PERM,
8840 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8841 NL80211_FLAG_NEED_RTNL,
8842 },
8843 #ifdef CONFIG_NL80211_TESTMODE
8844 {
8845 .cmd = NL80211_CMD_TESTMODE,
8846 .doit = nl80211_testmode_do,
8847 .dumpit = nl80211_testmode_dump,
8848 .policy = nl80211_policy,
8849 .flags = GENL_ADMIN_PERM,
8850 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8851 NL80211_FLAG_NEED_RTNL,
8852 },
8853 #endif
8854 {
8855 .cmd = NL80211_CMD_CONNECT,
8856 .doit = nl80211_connect,
8857 .policy = nl80211_policy,
8858 .flags = GENL_ADMIN_PERM,
8859 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8860 NL80211_FLAG_NEED_RTNL,
8861 },
8862 {
8863 .cmd = NL80211_CMD_DISCONNECT,
8864 .doit = nl80211_disconnect,
8865 .policy = nl80211_policy,
8866 .flags = GENL_ADMIN_PERM,
8867 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8868 NL80211_FLAG_NEED_RTNL,
8869 },
8870 {
8871 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8872 .doit = nl80211_wiphy_netns,
8873 .policy = nl80211_policy,
8874 .flags = GENL_ADMIN_PERM,
8875 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8876 NL80211_FLAG_NEED_RTNL,
8877 },
8878 {
8879 .cmd = NL80211_CMD_GET_SURVEY,
8880 .policy = nl80211_policy,
8881 .dumpit = nl80211_dump_survey,
8882 },
8883 {
8884 .cmd = NL80211_CMD_SET_PMKSA,
8885 .doit = nl80211_setdel_pmksa,
8886 .policy = nl80211_policy,
8887 .flags = GENL_ADMIN_PERM,
8888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8889 NL80211_FLAG_NEED_RTNL,
8890 },
8891 {
8892 .cmd = NL80211_CMD_DEL_PMKSA,
8893 .doit = nl80211_setdel_pmksa,
8894 .policy = nl80211_policy,
8895 .flags = GENL_ADMIN_PERM,
8896 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8897 NL80211_FLAG_NEED_RTNL,
8898 },
8899 {
8900 .cmd = NL80211_CMD_FLUSH_PMKSA,
8901 .doit = nl80211_flush_pmksa,
8902 .policy = nl80211_policy,
8903 .flags = GENL_ADMIN_PERM,
8904 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8905 NL80211_FLAG_NEED_RTNL,
8906 },
8907 {
8908 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8909 .doit = nl80211_remain_on_channel,
8910 .policy = nl80211_policy,
8911 .flags = GENL_ADMIN_PERM,
8912 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8913 NL80211_FLAG_NEED_RTNL,
8914 },
8915 {
8916 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8917 .doit = nl80211_cancel_remain_on_channel,
8918 .policy = nl80211_policy,
8919 .flags = GENL_ADMIN_PERM,
8920 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8921 NL80211_FLAG_NEED_RTNL,
8922 },
8923 {
8924 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8925 .doit = nl80211_set_tx_bitrate_mask,
8926 .policy = nl80211_policy,
8927 .flags = GENL_ADMIN_PERM,
8928 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8929 NL80211_FLAG_NEED_RTNL,
8930 },
8931 {
8932 .cmd = NL80211_CMD_REGISTER_FRAME,
8933 .doit = nl80211_register_mgmt,
8934 .policy = nl80211_policy,
8935 .flags = GENL_ADMIN_PERM,
8936 .internal_flags = NL80211_FLAG_NEED_WDEV |
8937 NL80211_FLAG_NEED_RTNL,
8938 },
8939 {
8940 .cmd = NL80211_CMD_FRAME,
8941 .doit = nl80211_tx_mgmt,
8942 .policy = nl80211_policy,
8943 .flags = GENL_ADMIN_PERM,
8944 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8945 NL80211_FLAG_NEED_RTNL,
8946 },
8947 {
8948 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8949 .doit = nl80211_tx_mgmt_cancel_wait,
8950 .policy = nl80211_policy,
8951 .flags = GENL_ADMIN_PERM,
8952 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8953 NL80211_FLAG_NEED_RTNL,
8954 },
8955 {
8956 .cmd = NL80211_CMD_SET_POWER_SAVE,
8957 .doit = nl80211_set_power_save,
8958 .policy = nl80211_policy,
8959 .flags = GENL_ADMIN_PERM,
8960 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8961 NL80211_FLAG_NEED_RTNL,
8962 },
8963 {
8964 .cmd = NL80211_CMD_GET_POWER_SAVE,
8965 .doit = nl80211_get_power_save,
8966 .policy = nl80211_policy,
8967 /* can be retrieved by unprivileged users */
8968 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8969 NL80211_FLAG_NEED_RTNL,
8970 },
8971 {
8972 .cmd = NL80211_CMD_SET_CQM,
8973 .doit = nl80211_set_cqm,
8974 .policy = nl80211_policy,
8975 .flags = GENL_ADMIN_PERM,
8976 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8977 NL80211_FLAG_NEED_RTNL,
8978 },
8979 {
8980 .cmd = NL80211_CMD_SET_CHANNEL,
8981 .doit = nl80211_set_channel,
8982 .policy = nl80211_policy,
8983 .flags = GENL_ADMIN_PERM,
8984 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8985 NL80211_FLAG_NEED_RTNL,
8986 },
8987 {
8988 .cmd = NL80211_CMD_SET_WDS_PEER,
8989 .doit = nl80211_set_wds_peer,
8990 .policy = nl80211_policy,
8991 .flags = GENL_ADMIN_PERM,
8992 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8993 NL80211_FLAG_NEED_RTNL,
8994 },
8995 {
8996 .cmd = NL80211_CMD_JOIN_MESH,
8997 .doit = nl80211_join_mesh,
8998 .policy = nl80211_policy,
8999 .flags = GENL_ADMIN_PERM,
9000 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9001 NL80211_FLAG_NEED_RTNL,
9002 },
9003 {
9004 .cmd = NL80211_CMD_LEAVE_MESH,
9005 .doit = nl80211_leave_mesh,
9006 .policy = nl80211_policy,
9007 .flags = GENL_ADMIN_PERM,
9008 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9009 NL80211_FLAG_NEED_RTNL,
9010 },
9011 #ifdef CONFIG_PM
9012 {
9013 .cmd = NL80211_CMD_GET_WOWLAN,
9014 .doit = nl80211_get_wowlan,
9015 .policy = nl80211_policy,
9016 /* can be retrieved by unprivileged users */
9017 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9018 NL80211_FLAG_NEED_RTNL,
9019 },
9020 {
9021 .cmd = NL80211_CMD_SET_WOWLAN,
9022 .doit = nl80211_set_wowlan,
9023 .policy = nl80211_policy,
9024 .flags = GENL_ADMIN_PERM,
9025 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9026 NL80211_FLAG_NEED_RTNL,
9027 },
9028 #endif
9029 {
9030 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9031 .doit = nl80211_set_rekey_data,
9032 .policy = nl80211_policy,
9033 .flags = GENL_ADMIN_PERM,
9034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9035 NL80211_FLAG_NEED_RTNL,
9036 },
9037 {
9038 .cmd = NL80211_CMD_TDLS_MGMT,
9039 .doit = nl80211_tdls_mgmt,
9040 .policy = nl80211_policy,
9041 .flags = GENL_ADMIN_PERM,
9042 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9043 NL80211_FLAG_NEED_RTNL,
9044 },
9045 {
9046 .cmd = NL80211_CMD_TDLS_OPER,
9047 .doit = nl80211_tdls_oper,
9048 .policy = nl80211_policy,
9049 .flags = GENL_ADMIN_PERM,
9050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9051 NL80211_FLAG_NEED_RTNL,
9052 },
9053 {
9054 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9055 .doit = nl80211_register_unexpected_frame,
9056 .policy = nl80211_policy,
9057 .flags = GENL_ADMIN_PERM,
9058 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9059 NL80211_FLAG_NEED_RTNL,
9060 },
9061 {
9062 .cmd = NL80211_CMD_PROBE_CLIENT,
9063 .doit = nl80211_probe_client,
9064 .policy = nl80211_policy,
9065 .flags = GENL_ADMIN_PERM,
9066 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9067 NL80211_FLAG_NEED_RTNL,
9068 },
9069 {
9070 .cmd = NL80211_CMD_REGISTER_BEACONS,
9071 .doit = nl80211_register_beacons,
9072 .policy = nl80211_policy,
9073 .flags = GENL_ADMIN_PERM,
9074 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9075 NL80211_FLAG_NEED_RTNL,
9076 },
9077 {
9078 .cmd = NL80211_CMD_SET_NOACK_MAP,
9079 .doit = nl80211_set_noack_map,
9080 .policy = nl80211_policy,
9081 .flags = GENL_ADMIN_PERM,
9082 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9083 NL80211_FLAG_NEED_RTNL,
9084 },
9085 {
9086 .cmd = NL80211_CMD_START_P2P_DEVICE,
9087 .doit = nl80211_start_p2p_device,
9088 .policy = nl80211_policy,
9089 .flags = GENL_ADMIN_PERM,
9090 .internal_flags = NL80211_FLAG_NEED_WDEV |
9091 NL80211_FLAG_NEED_RTNL,
9092 },
9093 {
9094 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9095 .doit = nl80211_stop_p2p_device,
9096 .policy = nl80211_policy,
9097 .flags = GENL_ADMIN_PERM,
9098 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9099 NL80211_FLAG_NEED_RTNL,
9100 },
9101 {
9102 .cmd = NL80211_CMD_SET_MCAST_RATE,
9103 .doit = nl80211_set_mcast_rate,
9104 .policy = nl80211_policy,
9105 .flags = GENL_ADMIN_PERM,
9106 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9107 NL80211_FLAG_NEED_RTNL,
9108 },
9109 {
9110 .cmd = NL80211_CMD_SET_MAC_ACL,
9111 .doit = nl80211_set_mac_acl,
9112 .policy = nl80211_policy,
9113 .flags = GENL_ADMIN_PERM,
9114 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9115 NL80211_FLAG_NEED_RTNL,
9116 },
9117 {
9118 .cmd = NL80211_CMD_RADAR_DETECT,
9119 .doit = nl80211_start_radar_detection,
9120 .policy = nl80211_policy,
9121 .flags = GENL_ADMIN_PERM,
9122 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9123 NL80211_FLAG_NEED_RTNL,
9124 },
9125 {
9126 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9127 .doit = nl80211_get_protocol_features,
9128 .policy = nl80211_policy,
9129 },
9130 {
9131 .cmd = NL80211_CMD_UPDATE_FT_IES,
9132 .doit = nl80211_update_ft_ies,
9133 .policy = nl80211_policy,
9134 .flags = GENL_ADMIN_PERM,
9135 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9136 NL80211_FLAG_NEED_RTNL,
9137 },
9138 {
9139 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9140 .doit = nl80211_crit_protocol_start,
9141 .policy = nl80211_policy,
9142 .flags = GENL_ADMIN_PERM,
9143 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9144 NL80211_FLAG_NEED_RTNL,
9145 },
9146 {
9147 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9148 .doit = nl80211_crit_protocol_stop,
9149 .policy = nl80211_policy,
9150 .flags = GENL_ADMIN_PERM,
9151 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9152 NL80211_FLAG_NEED_RTNL,
9153 },
9154 {
9155 .cmd = NL80211_CMD_VENDOR,
9156 .doit = nl80211_vendor_cmd,
9157 .policy = nl80211_policy,
9158 .flags = GENL_ADMIN_PERM,
9159 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9160 NL80211_FLAG_NEED_RTNL,
9161 },
9162 };
9163
9164 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9165 .name = "mlme",
9166 };
9167
9168 /* multicast groups */
9169 static struct genl_multicast_group nl80211_config_mcgrp = {
9170 .name = "config",
9171 };
9172 static struct genl_multicast_group nl80211_scan_mcgrp = {
9173 .name = "scan",
9174 };
9175 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9176 .name = "regulatory",
9177 };
9178
9179 /* notification functions */
9180
9181 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9182 {
9183 struct sk_buff *msg;
9184
9185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9186 if (!msg)
9187 return;
9188
9189 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
9190 false, NULL, NULL, NULL) < 0) {
9191 nlmsg_free(msg);
9192 return;
9193 }
9194
9195 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9196 nl80211_config_mcgrp.id, GFP_KERNEL);
9197 }
9198
9199 static int nl80211_add_scan_req(struct sk_buff *msg,
9200 struct cfg80211_registered_device *rdev)
9201 {
9202 struct cfg80211_scan_request *req = rdev->scan_req;
9203 struct nlattr *nest;
9204 int i;
9205
9206 lockdep_assert_held(&rdev->sched_scan_mtx);
9207
9208 if (WARN_ON(!req))
9209 return 0;
9210
9211 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9212 if (!nest)
9213 goto nla_put_failure;
9214 for (i = 0; i < req->n_ssids; i++) {
9215 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9216 goto nla_put_failure;
9217 }
9218 nla_nest_end(msg, nest);
9219
9220 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9221 if (!nest)
9222 goto nla_put_failure;
9223 for (i = 0; i < req->n_channels; i++) {
9224 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9225 goto nla_put_failure;
9226 }
9227 nla_nest_end(msg, nest);
9228
9229 if (req->ie &&
9230 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9231 goto nla_put_failure;
9232
9233 if (req->flags)
9234 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9235
9236 return 0;
9237 nla_put_failure:
9238 return -ENOBUFS;
9239 }
9240
9241 static int nl80211_send_scan_msg(struct sk_buff *msg,
9242 struct cfg80211_registered_device *rdev,
9243 struct wireless_dev *wdev,
9244 u32 portid, u32 seq, int flags,
9245 u32 cmd)
9246 {
9247 void *hdr;
9248
9249 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9250 if (!hdr)
9251 return -1;
9252
9253 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9254 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9255 wdev->netdev->ifindex)) ||
9256 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9257 goto nla_put_failure;
9258
9259 /* ignore errors and send incomplete event anyway */
9260 nl80211_add_scan_req(msg, rdev);
9261
9262 return genlmsg_end(msg, hdr);
9263
9264 nla_put_failure:
9265 genlmsg_cancel(msg, hdr);
9266 return -EMSGSIZE;
9267 }
9268
9269 static int
9270 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9271 struct cfg80211_registered_device *rdev,
9272 struct net_device *netdev,
9273 u32 portid, u32 seq, int flags, u32 cmd)
9274 {
9275 void *hdr;
9276
9277 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9278 if (!hdr)
9279 return -1;
9280
9281 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9282 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9283 goto nla_put_failure;
9284
9285 return genlmsg_end(msg, hdr);
9286
9287 nla_put_failure:
9288 genlmsg_cancel(msg, hdr);
9289 return -EMSGSIZE;
9290 }
9291
9292 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9293 struct wireless_dev *wdev)
9294 {
9295 struct sk_buff *msg;
9296
9297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9298 if (!msg)
9299 return;
9300
9301 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9302 NL80211_CMD_TRIGGER_SCAN) < 0) {
9303 nlmsg_free(msg);
9304 return;
9305 }
9306
9307 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9308 nl80211_scan_mcgrp.id, GFP_KERNEL);
9309 }
9310
9311 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9312 struct wireless_dev *wdev)
9313 {
9314 struct sk_buff *msg;
9315
9316 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9317 if (!msg)
9318 return;
9319
9320 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9321 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9322 nlmsg_free(msg);
9323 return;
9324 }
9325
9326 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9327 nl80211_scan_mcgrp.id, GFP_KERNEL);
9328 }
9329
9330 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9331 struct wireless_dev *wdev)
9332 {
9333 struct sk_buff *msg;
9334
9335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9336 if (!msg)
9337 return;
9338
9339 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9340 NL80211_CMD_SCAN_ABORTED) < 0) {
9341 nlmsg_free(msg);
9342 return;
9343 }
9344
9345 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9346 nl80211_scan_mcgrp.id, GFP_KERNEL);
9347 }
9348
9349 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9350 struct net_device *netdev)
9351 {
9352 struct sk_buff *msg;
9353
9354 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9355 if (!msg)
9356 return;
9357
9358 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9359 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9360 nlmsg_free(msg);
9361 return;
9362 }
9363
9364 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9365 nl80211_scan_mcgrp.id, GFP_KERNEL);
9366 }
9367
9368 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9369 struct net_device *netdev, u32 cmd)
9370 {
9371 struct sk_buff *msg;
9372
9373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9374 if (!msg)
9375 return;
9376
9377 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9378 nlmsg_free(msg);
9379 return;
9380 }
9381
9382 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9383 nl80211_scan_mcgrp.id, GFP_KERNEL);
9384 }
9385
9386 /*
9387 * This can happen on global regulatory changes or device specific settings
9388 * based on custom world regulatory domains.
9389 */
9390 void nl80211_send_reg_change_event(struct regulatory_request *request)
9391 {
9392 struct sk_buff *msg;
9393 void *hdr;
9394
9395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9396 if (!msg)
9397 return;
9398
9399 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9400 if (!hdr) {
9401 nlmsg_free(msg);
9402 return;
9403 }
9404
9405 /* Userspace can always count this one always being set */
9406 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9407 goto nla_put_failure;
9408
9409 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9410 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9411 NL80211_REGDOM_TYPE_WORLD))
9412 goto nla_put_failure;
9413 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9414 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9415 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9416 goto nla_put_failure;
9417 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9418 request->intersect) {
9419 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9420 NL80211_REGDOM_TYPE_INTERSECTION))
9421 goto nla_put_failure;
9422 } else {
9423 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9424 NL80211_REGDOM_TYPE_COUNTRY) ||
9425 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9426 request->alpha2))
9427 goto nla_put_failure;
9428 }
9429
9430 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9431 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9432 goto nla_put_failure;
9433
9434 genlmsg_end(msg, hdr);
9435
9436 rcu_read_lock();
9437 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9438 GFP_ATOMIC);
9439 rcu_read_unlock();
9440
9441 return;
9442
9443 nla_put_failure:
9444 genlmsg_cancel(msg, hdr);
9445 nlmsg_free(msg);
9446 }
9447
9448 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9449 struct net_device *netdev,
9450 const u8 *buf, size_t len,
9451 enum nl80211_commands cmd, gfp_t gfp)
9452 {
9453 struct sk_buff *msg;
9454 void *hdr;
9455
9456 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9457 if (!msg)
9458 return;
9459
9460 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9461 if (!hdr) {
9462 nlmsg_free(msg);
9463 return;
9464 }
9465
9466 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9467 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9468 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9469 goto nla_put_failure;
9470
9471 genlmsg_end(msg, hdr);
9472
9473 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9474 nl80211_mlme_mcgrp.id, gfp);
9475 return;
9476
9477 nla_put_failure:
9478 genlmsg_cancel(msg, hdr);
9479 nlmsg_free(msg);
9480 }
9481
9482 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9483 struct net_device *netdev, const u8 *buf,
9484 size_t len, gfp_t gfp)
9485 {
9486 nl80211_send_mlme_event(rdev, netdev, buf, len,
9487 NL80211_CMD_AUTHENTICATE, gfp);
9488 }
9489
9490 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9491 struct net_device *netdev, const u8 *buf,
9492 size_t len, gfp_t gfp)
9493 {
9494 nl80211_send_mlme_event(rdev, netdev, buf, len,
9495 NL80211_CMD_ASSOCIATE, gfp);
9496 }
9497
9498 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9499 struct net_device *netdev, const u8 *buf,
9500 size_t len, gfp_t gfp)
9501 {
9502 nl80211_send_mlme_event(rdev, netdev, buf, len,
9503 NL80211_CMD_DEAUTHENTICATE, gfp);
9504 }
9505
9506 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9507 struct net_device *netdev, const u8 *buf,
9508 size_t len, gfp_t gfp)
9509 {
9510 nl80211_send_mlme_event(rdev, netdev, buf, len,
9511 NL80211_CMD_DISASSOCIATE, gfp);
9512 }
9513
9514 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9515 size_t len)
9516 {
9517 struct wireless_dev *wdev = dev->ieee80211_ptr;
9518 struct wiphy *wiphy = wdev->wiphy;
9519 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9520
9521 trace_cfg80211_send_unprot_deauth(dev);
9522 nl80211_send_mlme_event(rdev, dev, buf, len,
9523 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9524 }
9525 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9526
9527 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9528 size_t len)
9529 {
9530 struct wireless_dev *wdev = dev->ieee80211_ptr;
9531 struct wiphy *wiphy = wdev->wiphy;
9532 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9533
9534 trace_cfg80211_send_unprot_disassoc(dev);
9535 nl80211_send_mlme_event(rdev, dev, buf, len,
9536 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9537 }
9538 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9539
9540 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9541 struct net_device *netdev, int cmd,
9542 const u8 *addr, gfp_t gfp)
9543 {
9544 struct sk_buff *msg;
9545 void *hdr;
9546
9547 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9548 if (!msg)
9549 return;
9550
9551 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9552 if (!hdr) {
9553 nlmsg_free(msg);
9554 return;
9555 }
9556
9557 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9558 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9559 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9560 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9561 goto nla_put_failure;
9562
9563 genlmsg_end(msg, hdr);
9564
9565 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9566 nl80211_mlme_mcgrp.id, gfp);
9567 return;
9568
9569 nla_put_failure:
9570 genlmsg_cancel(msg, hdr);
9571 nlmsg_free(msg);
9572 }
9573
9574 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9575 struct net_device *netdev, const u8 *addr,
9576 gfp_t gfp)
9577 {
9578 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9579 addr, gfp);
9580 }
9581
9582 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9583 struct net_device *netdev, const u8 *addr,
9584 gfp_t gfp)
9585 {
9586 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9587 addr, gfp);
9588 }
9589
9590 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9591 struct net_device *netdev, const u8 *bssid,
9592 const u8 *req_ie, size_t req_ie_len,
9593 const u8 *resp_ie, size_t resp_ie_len,
9594 u16 status, gfp_t gfp)
9595 {
9596 struct sk_buff *msg;
9597 void *hdr;
9598
9599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9600 if (!msg)
9601 return;
9602
9603 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9604 if (!hdr) {
9605 nlmsg_free(msg);
9606 return;
9607 }
9608
9609 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9610 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9611 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9612 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9613 (req_ie &&
9614 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9615 (resp_ie &&
9616 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9617 goto nla_put_failure;
9618
9619 genlmsg_end(msg, hdr);
9620
9621 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9622 nl80211_mlme_mcgrp.id, gfp);
9623 return;
9624
9625 nla_put_failure:
9626 genlmsg_cancel(msg, hdr);
9627 nlmsg_free(msg);
9628
9629 }
9630
9631 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9632 struct net_device *netdev, const u8 *bssid,
9633 const u8 *req_ie, size_t req_ie_len,
9634 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9635 {
9636 struct sk_buff *msg;
9637 void *hdr;
9638
9639 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9640 if (!msg)
9641 return;
9642
9643 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9644 if (!hdr) {
9645 nlmsg_free(msg);
9646 return;
9647 }
9648
9649 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9650 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9651 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9652 (req_ie &&
9653 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9654 (resp_ie &&
9655 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9656 goto nla_put_failure;
9657
9658 genlmsg_end(msg, hdr);
9659
9660 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9661 nl80211_mlme_mcgrp.id, gfp);
9662 return;
9663
9664 nla_put_failure:
9665 genlmsg_cancel(msg, hdr);
9666 nlmsg_free(msg);
9667
9668 }
9669
9670 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9671 struct net_device *netdev, u16 reason,
9672 const u8 *ie, size_t ie_len, bool from_ap)
9673 {
9674 struct sk_buff *msg;
9675 void *hdr;
9676
9677 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9678 if (!msg)
9679 return;
9680
9681 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9682 if (!hdr) {
9683 nlmsg_free(msg);
9684 return;
9685 }
9686
9687 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9688 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9689 (from_ap && reason &&
9690 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9691 (from_ap &&
9692 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9693 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9694 goto nla_put_failure;
9695
9696 genlmsg_end(msg, hdr);
9697
9698 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9699 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9700 return;
9701
9702 nla_put_failure:
9703 genlmsg_cancel(msg, hdr);
9704 nlmsg_free(msg);
9705
9706 }
9707
9708 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9709 struct net_device *netdev, const u8 *bssid,
9710 gfp_t gfp)
9711 {
9712 struct sk_buff *msg;
9713 void *hdr;
9714
9715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9716 if (!msg)
9717 return;
9718
9719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9720 if (!hdr) {
9721 nlmsg_free(msg);
9722 return;
9723 }
9724
9725 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9726 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9727 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9728 goto nla_put_failure;
9729
9730 genlmsg_end(msg, hdr);
9731
9732 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9733 nl80211_mlme_mcgrp.id, gfp);
9734 return;
9735
9736 nla_put_failure:
9737 genlmsg_cancel(msg, hdr);
9738 nlmsg_free(msg);
9739 }
9740
9741 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9742 const u8* ie, u8 ie_len, gfp_t gfp)
9743 {
9744 struct wireless_dev *wdev = dev->ieee80211_ptr;
9745 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9746 struct sk_buff *msg;
9747 void *hdr;
9748
9749 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9750 return;
9751
9752 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9753
9754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9755 if (!msg)
9756 return;
9757
9758 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9759 if (!hdr) {
9760 nlmsg_free(msg);
9761 return;
9762 }
9763
9764 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9765 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9766 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9767 (ie_len && ie &&
9768 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9769 goto nla_put_failure;
9770
9771 genlmsg_end(msg, hdr);
9772
9773 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9774 nl80211_mlme_mcgrp.id, gfp);
9775 return;
9776
9777 nla_put_failure:
9778 genlmsg_cancel(msg, hdr);
9779 nlmsg_free(msg);
9780 }
9781 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9782
9783 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9784 struct net_device *netdev, const u8 *addr,
9785 enum nl80211_key_type key_type, int key_id,
9786 const u8 *tsc, gfp_t gfp)
9787 {
9788 struct sk_buff *msg;
9789 void *hdr;
9790
9791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9792 if (!msg)
9793 return;
9794
9795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9796 if (!hdr) {
9797 nlmsg_free(msg);
9798 return;
9799 }
9800
9801 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9802 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9803 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9804 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9805 (key_id != -1 &&
9806 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9807 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9808 goto nla_put_failure;
9809
9810 genlmsg_end(msg, hdr);
9811
9812 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9813 nl80211_mlme_mcgrp.id, gfp);
9814 return;
9815
9816 nla_put_failure:
9817 genlmsg_cancel(msg, hdr);
9818 nlmsg_free(msg);
9819 }
9820
9821 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9822 struct ieee80211_channel *channel_before,
9823 struct ieee80211_channel *channel_after)
9824 {
9825 struct sk_buff *msg;
9826 void *hdr;
9827 struct nlattr *nl_freq;
9828
9829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9830 if (!msg)
9831 return;
9832
9833 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9834 if (!hdr) {
9835 nlmsg_free(msg);
9836 return;
9837 }
9838
9839 /*
9840 * Since we are applying the beacon hint to a wiphy we know its
9841 * wiphy_idx is valid
9842 */
9843 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9844 goto nla_put_failure;
9845
9846 /* Before */
9847 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9848 if (!nl_freq)
9849 goto nla_put_failure;
9850 if (nl80211_msg_put_channel(msg, channel_before, false))
9851 goto nla_put_failure;
9852 nla_nest_end(msg, nl_freq);
9853
9854 /* After */
9855 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9856 if (!nl_freq)
9857 goto nla_put_failure;
9858 if (nl80211_msg_put_channel(msg, channel_after, false))
9859 goto nla_put_failure;
9860 nla_nest_end(msg, nl_freq);
9861
9862 genlmsg_end(msg, hdr);
9863
9864 rcu_read_lock();
9865 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9866 GFP_ATOMIC);
9867 rcu_read_unlock();
9868
9869 return;
9870
9871 nla_put_failure:
9872 genlmsg_cancel(msg, hdr);
9873 nlmsg_free(msg);
9874 }
9875
9876 static void nl80211_send_remain_on_chan_event(
9877 int cmd, struct cfg80211_registered_device *rdev,
9878 struct wireless_dev *wdev, u64 cookie,
9879 struct ieee80211_channel *chan,
9880 unsigned int duration, gfp_t gfp)
9881 {
9882 struct sk_buff *msg;
9883 void *hdr;
9884
9885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9886 if (!msg)
9887 return;
9888
9889 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9890 if (!hdr) {
9891 nlmsg_free(msg);
9892 return;
9893 }
9894
9895 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9896 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9897 wdev->netdev->ifindex)) ||
9898 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9899 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9900 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9901 NL80211_CHAN_NO_HT) ||
9902 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9903 goto nla_put_failure;
9904
9905 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9906 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9907 goto nla_put_failure;
9908
9909 genlmsg_end(msg, hdr);
9910
9911 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9912 nl80211_mlme_mcgrp.id, gfp);
9913 return;
9914
9915 nla_put_failure:
9916 genlmsg_cancel(msg, hdr);
9917 nlmsg_free(msg);
9918 }
9919
9920 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9921 struct ieee80211_channel *chan,
9922 unsigned int duration, gfp_t gfp)
9923 {
9924 struct wiphy *wiphy = wdev->wiphy;
9925 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9926
9927 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9928 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9929 rdev, wdev, cookie, chan,
9930 duration, gfp);
9931 }
9932 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9933
9934 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9935 struct ieee80211_channel *chan,
9936 gfp_t gfp)
9937 {
9938 struct wiphy *wiphy = wdev->wiphy;
9939 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9940
9941 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9942 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9943 rdev, wdev, cookie, chan, 0, gfp);
9944 }
9945 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9946
9947 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9948 struct station_info *sinfo, gfp_t gfp)
9949 {
9950 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9951 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9952 struct sk_buff *msg;
9953
9954 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9955
9956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9957 if (!msg)
9958 return;
9959
9960 if (nl80211_send_station(msg, 0, 0, 0,
9961 rdev, dev, mac_addr, sinfo) < 0) {
9962 nlmsg_free(msg);
9963 return;
9964 }
9965
9966 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9967 nl80211_mlme_mcgrp.id, gfp);
9968 }
9969 EXPORT_SYMBOL(cfg80211_new_sta);
9970
9971 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9972 {
9973 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9974 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9975 struct sk_buff *msg;
9976 void *hdr;
9977
9978 trace_cfg80211_del_sta(dev, mac_addr);
9979
9980 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9981 if (!msg)
9982 return;
9983
9984 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9985 if (!hdr) {
9986 nlmsg_free(msg);
9987 return;
9988 }
9989
9990 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9991 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9992 goto nla_put_failure;
9993
9994 genlmsg_end(msg, hdr);
9995
9996 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9997 nl80211_mlme_mcgrp.id, gfp);
9998 return;
9999
10000 nla_put_failure:
10001 genlmsg_cancel(msg, hdr);
10002 nlmsg_free(msg);
10003 }
10004 EXPORT_SYMBOL(cfg80211_del_sta);
10005
10006 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10007 enum nl80211_connect_failed_reason reason,
10008 gfp_t gfp)
10009 {
10010 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10011 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10012 struct sk_buff *msg;
10013 void *hdr;
10014
10015 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10016 if (!msg)
10017 return;
10018
10019 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10020 if (!hdr) {
10021 nlmsg_free(msg);
10022 return;
10023 }
10024
10025 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10026 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10027 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10028 goto nla_put_failure;
10029
10030 genlmsg_end(msg, hdr);
10031
10032 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10033 nl80211_mlme_mcgrp.id, gfp);
10034 return;
10035
10036 nla_put_failure:
10037 genlmsg_cancel(msg, hdr);
10038 nlmsg_free(msg);
10039 }
10040 EXPORT_SYMBOL(cfg80211_conn_failed);
10041
10042 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10043 const u8 *addr, gfp_t gfp)
10044 {
10045 struct wireless_dev *wdev = dev->ieee80211_ptr;
10046 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10047 struct sk_buff *msg;
10048 void *hdr;
10049 int err;
10050 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10051
10052 if (!nlportid)
10053 return false;
10054
10055 msg = nlmsg_new(100, gfp);
10056 if (!msg)
10057 return true;
10058
10059 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10060 if (!hdr) {
10061 nlmsg_free(msg);
10062 return true;
10063 }
10064
10065 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10066 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10067 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10068 goto nla_put_failure;
10069
10070 err = genlmsg_end(msg, hdr);
10071 if (err < 0) {
10072 nlmsg_free(msg);
10073 return true;
10074 }
10075
10076 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10077 return true;
10078
10079 nla_put_failure:
10080 genlmsg_cancel(msg, hdr);
10081 nlmsg_free(msg);
10082 return true;
10083 }
10084
10085 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10086 const u8 *addr, gfp_t gfp)
10087 {
10088 struct wireless_dev *wdev = dev->ieee80211_ptr;
10089 bool ret;
10090
10091 trace_cfg80211_rx_spurious_frame(dev, addr);
10092
10093 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10094 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10095 trace_cfg80211_return_bool(false);
10096 return false;
10097 }
10098 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10099 addr, gfp);
10100 trace_cfg80211_return_bool(ret);
10101 return ret;
10102 }
10103 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10104
10105 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10106 const u8 *addr, gfp_t gfp)
10107 {
10108 struct wireless_dev *wdev = dev->ieee80211_ptr;
10109 bool ret;
10110
10111 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10112
10113 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10114 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10115 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10116 trace_cfg80211_return_bool(false);
10117 return false;
10118 }
10119 ret = __nl80211_unexpected_frame(dev,
10120 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10121 addr, gfp);
10122 trace_cfg80211_return_bool(ret);
10123 return ret;
10124 }
10125 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10126
10127 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10128 struct wireless_dev *wdev, u32 nlportid,
10129 int freq, int sig_dbm,
10130 const u8 *buf, size_t len, gfp_t gfp)
10131 {
10132 struct net_device *netdev = wdev->netdev;
10133 struct sk_buff *msg;
10134 void *hdr;
10135
10136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10137 if (!msg)
10138 return -ENOMEM;
10139
10140 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10141 if (!hdr) {
10142 nlmsg_free(msg);
10143 return -ENOMEM;
10144 }
10145
10146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10147 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10148 netdev->ifindex)) ||
10149 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10150 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10151 (sig_dbm &&
10152 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10153 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10154 goto nla_put_failure;
10155
10156 genlmsg_end(msg, hdr);
10157
10158 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10159
10160 nla_put_failure:
10161 genlmsg_cancel(msg, hdr);
10162 nlmsg_free(msg);
10163 return -ENOBUFS;
10164 }
10165
10166 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10167 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10168 {
10169 struct wiphy *wiphy = wdev->wiphy;
10170 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10171 struct net_device *netdev = wdev->netdev;
10172 struct sk_buff *msg;
10173 void *hdr;
10174
10175 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10176
10177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10178 if (!msg)
10179 return;
10180
10181 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10182 if (!hdr) {
10183 nlmsg_free(msg);
10184 return;
10185 }
10186
10187 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10188 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10189 netdev->ifindex)) ||
10190 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10191 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10192 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10193 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10194 goto nla_put_failure;
10195
10196 genlmsg_end(msg, hdr);
10197
10198 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10199 nl80211_mlme_mcgrp.id, gfp);
10200 return;
10201
10202 nla_put_failure:
10203 genlmsg_cancel(msg, hdr);
10204 nlmsg_free(msg);
10205 }
10206 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10207
10208 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10209 enum nl80211_cqm_rssi_threshold_event rssi_event,
10210 gfp_t gfp)
10211 {
10212 struct wireless_dev *wdev = dev->ieee80211_ptr;
10213 struct wiphy *wiphy = wdev->wiphy;
10214 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10215 struct sk_buff *msg;
10216 struct nlattr *pinfoattr;
10217 void *hdr;
10218
10219 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10220
10221 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10222 if (!msg)
10223 return;
10224
10225 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10226 if (!hdr) {
10227 nlmsg_free(msg);
10228 return;
10229 }
10230
10231 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10232 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10233 goto nla_put_failure;
10234
10235 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10236 if (!pinfoattr)
10237 goto nla_put_failure;
10238
10239 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10240 rssi_event))
10241 goto nla_put_failure;
10242
10243 nla_nest_end(msg, pinfoattr);
10244
10245 genlmsg_end(msg, hdr);
10246
10247 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10248 nl80211_mlme_mcgrp.id, gfp);
10249 return;
10250
10251 nla_put_failure:
10252 genlmsg_cancel(msg, hdr);
10253 nlmsg_free(msg);
10254 }
10255 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10256
10257 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10258 struct net_device *netdev, const u8 *bssid,
10259 const u8 *replay_ctr, gfp_t gfp)
10260 {
10261 struct sk_buff *msg;
10262 struct nlattr *rekey_attr;
10263 void *hdr;
10264
10265 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10266 if (!msg)
10267 return;
10268
10269 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
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, netdev->ifindex) ||
10277 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10278 goto nla_put_failure;
10279
10280 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10281 if (!rekey_attr)
10282 goto nla_put_failure;
10283
10284 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10285 NL80211_REPLAY_CTR_LEN, replay_ctr))
10286 goto nla_put_failure;
10287
10288 nla_nest_end(msg, rekey_attr);
10289
10290 genlmsg_end(msg, hdr);
10291
10292 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10293 nl80211_mlme_mcgrp.id, gfp);
10294 return;
10295
10296 nla_put_failure:
10297 genlmsg_cancel(msg, hdr);
10298 nlmsg_free(msg);
10299 }
10300
10301 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10302 const u8 *replay_ctr, gfp_t gfp)
10303 {
10304 struct wireless_dev *wdev = dev->ieee80211_ptr;
10305 struct wiphy *wiphy = wdev->wiphy;
10306 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10307
10308 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10309 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10310 }
10311 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10312
10313 static void
10314 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10315 struct net_device *netdev, int index,
10316 const u8 *bssid, bool preauth, gfp_t gfp)
10317 {
10318 struct sk_buff *msg;
10319 struct nlattr *attr;
10320 void *hdr;
10321
10322 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10323 if (!msg)
10324 return;
10325
10326 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10327 if (!hdr) {
10328 nlmsg_free(msg);
10329 return;
10330 }
10331
10332 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10333 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10334 goto nla_put_failure;
10335
10336 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10337 if (!attr)
10338 goto nla_put_failure;
10339
10340 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10341 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10342 (preauth &&
10343 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10344 goto nla_put_failure;
10345
10346 nla_nest_end(msg, attr);
10347
10348 genlmsg_end(msg, hdr);
10349
10350 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10351 nl80211_mlme_mcgrp.id, gfp);
10352 return;
10353
10354 nla_put_failure:
10355 genlmsg_cancel(msg, hdr);
10356 nlmsg_free(msg);
10357 }
10358
10359 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10360 const u8 *bssid, bool preauth, gfp_t gfp)
10361 {
10362 struct wireless_dev *wdev = dev->ieee80211_ptr;
10363 struct wiphy *wiphy = wdev->wiphy;
10364 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10365
10366 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10367 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10368 }
10369 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10370
10371 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10372 struct net_device *netdev,
10373 struct cfg80211_chan_def *chandef,
10374 gfp_t gfp)
10375 {
10376 struct sk_buff *msg;
10377 void *hdr;
10378
10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380 if (!msg)
10381 return;
10382
10383 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10384 if (!hdr) {
10385 nlmsg_free(msg);
10386 return;
10387 }
10388
10389 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10390 goto nla_put_failure;
10391
10392 if (nl80211_send_chandef(msg, chandef))
10393 goto nla_put_failure;
10394
10395 genlmsg_end(msg, hdr);
10396
10397 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10398 nl80211_mlme_mcgrp.id, gfp);
10399 return;
10400
10401 nla_put_failure:
10402 genlmsg_cancel(msg, hdr);
10403 nlmsg_free(msg);
10404 }
10405
10406 void cfg80211_ch_switch_notify(struct net_device *dev,
10407 struct cfg80211_chan_def *chandef)
10408 {
10409 struct wireless_dev *wdev = dev->ieee80211_ptr;
10410 struct wiphy *wiphy = wdev->wiphy;
10411 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10412
10413 trace_cfg80211_ch_switch_notify(dev, chandef);
10414
10415 wdev_lock(wdev);
10416
10417 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10418 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10419 goto out;
10420
10421 wdev->channel = chandef->chan;
10422 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10423 out:
10424 wdev_unlock(wdev);
10425 return;
10426 }
10427 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10428
10429 void cfg80211_cqm_txe_notify(struct net_device *dev,
10430 const u8 *peer, u32 num_packets,
10431 u32 rate, u32 intvl, gfp_t gfp)
10432 {
10433 struct wireless_dev *wdev = dev->ieee80211_ptr;
10434 struct wiphy *wiphy = wdev->wiphy;
10435 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10436 struct sk_buff *msg;
10437 struct nlattr *pinfoattr;
10438 void *hdr;
10439
10440 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10441 if (!msg)
10442 return;
10443
10444 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10445 if (!hdr) {
10446 nlmsg_free(msg);
10447 return;
10448 }
10449
10450 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10451 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10452 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10453 goto nla_put_failure;
10454
10455 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10456 if (!pinfoattr)
10457 goto nla_put_failure;
10458
10459 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10460 goto nla_put_failure;
10461
10462 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10463 goto nla_put_failure;
10464
10465 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10466 goto nla_put_failure;
10467
10468 nla_nest_end(msg, pinfoattr);
10469
10470 genlmsg_end(msg, hdr);
10471
10472 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10473 nl80211_mlme_mcgrp.id, gfp);
10474 return;
10475
10476 nla_put_failure:
10477 genlmsg_cancel(msg, hdr);
10478 nlmsg_free(msg);
10479 }
10480 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10481
10482 void
10483 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10484 struct cfg80211_chan_def *chandef,
10485 enum nl80211_radar_event event,
10486 struct net_device *netdev, gfp_t gfp)
10487 {
10488 struct sk_buff *msg;
10489 void *hdr;
10490
10491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10492 if (!msg)
10493 return;
10494
10495 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10496 if (!hdr) {
10497 nlmsg_free(msg);
10498 return;
10499 }
10500
10501 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10502 goto nla_put_failure;
10503
10504 /* NOP and radar events don't need a netdev parameter */
10505 if (netdev) {
10506 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10507
10508 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10509 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10510 goto nla_put_failure;
10511 }
10512
10513 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10514 goto nla_put_failure;
10515
10516 if (nl80211_send_chandef(msg, chandef))
10517 goto nla_put_failure;
10518
10519 if (genlmsg_end(msg, hdr) < 0) {
10520 nlmsg_free(msg);
10521 return;
10522 }
10523
10524 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10525 nl80211_mlme_mcgrp.id, gfp);
10526 return;
10527
10528 nla_put_failure:
10529 genlmsg_cancel(msg, hdr);
10530 nlmsg_free(msg);
10531 }
10532
10533 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10534 const u8 *peer, u32 num_packets, gfp_t gfp)
10535 {
10536 struct wireless_dev *wdev = dev->ieee80211_ptr;
10537 struct wiphy *wiphy = wdev->wiphy;
10538 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10539 struct sk_buff *msg;
10540 struct nlattr *pinfoattr;
10541 void *hdr;
10542
10543 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10544
10545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10546 if (!msg)
10547 return;
10548
10549 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10550 if (!hdr) {
10551 nlmsg_free(msg);
10552 return;
10553 }
10554
10555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10556 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10558 goto nla_put_failure;
10559
10560 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10561 if (!pinfoattr)
10562 goto nla_put_failure;
10563
10564 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10565 goto nla_put_failure;
10566
10567 nla_nest_end(msg, pinfoattr);
10568
10569 genlmsg_end(msg, hdr);
10570
10571 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10572 nl80211_mlme_mcgrp.id, gfp);
10573 return;
10574
10575 nla_put_failure:
10576 genlmsg_cancel(msg, hdr);
10577 nlmsg_free(msg);
10578 }
10579 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10580
10581 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10582 u64 cookie, bool acked, gfp_t gfp)
10583 {
10584 struct wireless_dev *wdev = dev->ieee80211_ptr;
10585 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10586 struct sk_buff *msg;
10587 void *hdr;
10588 int err;
10589
10590 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10591
10592 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10593
10594 if (!msg)
10595 return;
10596
10597 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10598 if (!hdr) {
10599 nlmsg_free(msg);
10600 return;
10601 }
10602
10603 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10604 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10605 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10606 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10607 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10608 goto nla_put_failure;
10609
10610 err = genlmsg_end(msg, hdr);
10611 if (err < 0) {
10612 nlmsg_free(msg);
10613 return;
10614 }
10615
10616 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10617 nl80211_mlme_mcgrp.id, gfp);
10618 return;
10619
10620 nla_put_failure:
10621 genlmsg_cancel(msg, hdr);
10622 nlmsg_free(msg);
10623 }
10624 EXPORT_SYMBOL(cfg80211_probe_status);
10625
10626 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10627 const u8 *frame, size_t len,
10628 int freq, int sig_dbm)
10629 {
10630 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10631 struct sk_buff *msg;
10632 void *hdr;
10633 struct cfg80211_beacon_registration *reg;
10634
10635 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10636
10637 spin_lock_bh(&rdev->beacon_registrations_lock);
10638 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10639 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10640 if (!msg) {
10641 spin_unlock_bh(&rdev->beacon_registrations_lock);
10642 return;
10643 }
10644
10645 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10646 if (!hdr)
10647 goto nla_put_failure;
10648
10649 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10650 (freq &&
10651 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10652 (sig_dbm &&
10653 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10654 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10655 goto nla_put_failure;
10656
10657 genlmsg_end(msg, hdr);
10658
10659 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10660 }
10661 spin_unlock_bh(&rdev->beacon_registrations_lock);
10662 return;
10663
10664 nla_put_failure:
10665 spin_unlock_bh(&rdev->beacon_registrations_lock);
10666 if (hdr)
10667 genlmsg_cancel(msg, hdr);
10668 nlmsg_free(msg);
10669 }
10670 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10671
10672 #ifdef CONFIG_PM
10673 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10674 struct cfg80211_wowlan_wakeup *wakeup,
10675 gfp_t gfp)
10676 {
10677 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10678 struct sk_buff *msg;
10679 void *hdr;
10680 int err, size = 200;
10681
10682 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10683
10684 if (wakeup)
10685 size += wakeup->packet_present_len;
10686
10687 msg = nlmsg_new(size, gfp);
10688 if (!msg)
10689 return;
10690
10691 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10692 if (!hdr)
10693 goto free_msg;
10694
10695 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10696 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10697 goto free_msg;
10698
10699 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10700 wdev->netdev->ifindex))
10701 goto free_msg;
10702
10703 if (wakeup) {
10704 struct nlattr *reasons;
10705
10706 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10707
10708 if (wakeup->disconnect &&
10709 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10710 goto free_msg;
10711 if (wakeup->magic_pkt &&
10712 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10713 goto free_msg;
10714 if (wakeup->gtk_rekey_failure &&
10715 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10716 goto free_msg;
10717 if (wakeup->eap_identity_req &&
10718 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10719 goto free_msg;
10720 if (wakeup->four_way_handshake &&
10721 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10722 goto free_msg;
10723 if (wakeup->rfkill_release &&
10724 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10725 goto free_msg;
10726
10727 if (wakeup->pattern_idx >= 0 &&
10728 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10729 wakeup->pattern_idx))
10730 goto free_msg;
10731
10732 if (wakeup->tcp_match)
10733 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10734
10735 if (wakeup->tcp_connlost)
10736 nla_put_flag(msg,
10737 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10738
10739 if (wakeup->tcp_nomoretokens)
10740 nla_put_flag(msg,
10741 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10742
10743 if (wakeup->packet) {
10744 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10745 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10746
10747 if (!wakeup->packet_80211) {
10748 pkt_attr =
10749 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10750 len_attr =
10751 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10752 }
10753
10754 if (wakeup->packet_len &&
10755 nla_put_u32(msg, len_attr, wakeup->packet_len))
10756 goto free_msg;
10757
10758 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10759 wakeup->packet))
10760 goto free_msg;
10761 }
10762
10763 nla_nest_end(msg, reasons);
10764 }
10765
10766 err = genlmsg_end(msg, hdr);
10767 if (err < 0)
10768 goto free_msg;
10769
10770 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10771 nl80211_mlme_mcgrp.id, gfp);
10772 return;
10773
10774 free_msg:
10775 nlmsg_free(msg);
10776 }
10777 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10778 #endif
10779
10780 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10781 enum nl80211_tdls_operation oper,
10782 u16 reason_code, gfp_t gfp)
10783 {
10784 struct wireless_dev *wdev = dev->ieee80211_ptr;
10785 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10786 struct sk_buff *msg;
10787 void *hdr;
10788 int err;
10789
10790 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10791 reason_code);
10792
10793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10794 if (!msg)
10795 return;
10796
10797 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10798 if (!hdr) {
10799 nlmsg_free(msg);
10800 return;
10801 }
10802
10803 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10804 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10805 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10806 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10807 (reason_code > 0 &&
10808 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10809 goto nla_put_failure;
10810
10811 err = genlmsg_end(msg, hdr);
10812 if (err < 0) {
10813 nlmsg_free(msg);
10814 return;
10815 }
10816
10817 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10818 nl80211_mlme_mcgrp.id, gfp);
10819 return;
10820
10821 nla_put_failure:
10822 genlmsg_cancel(msg, hdr);
10823 nlmsg_free(msg);
10824 }
10825 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10826
10827 static int nl80211_netlink_notify(struct notifier_block * nb,
10828 unsigned long state,
10829 void *_notify)
10830 {
10831 struct netlink_notify *notify = _notify;
10832 struct cfg80211_registered_device *rdev;
10833 struct wireless_dev *wdev;
10834 struct cfg80211_beacon_registration *reg, *tmp;
10835
10836 if (state != NETLINK_URELEASE)
10837 return NOTIFY_DONE;
10838
10839 rcu_read_lock();
10840
10841 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10842 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10843 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10844
10845 spin_lock_bh(&rdev->beacon_registrations_lock);
10846 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10847 list) {
10848 if (reg->nlportid == notify->portid) {
10849 list_del(&reg->list);
10850 kfree(reg);
10851 break;
10852 }
10853 }
10854 spin_unlock_bh(&rdev->beacon_registrations_lock);
10855 }
10856
10857 rcu_read_unlock();
10858
10859 return NOTIFY_DONE;
10860 }
10861
10862 static struct notifier_block nl80211_netlink_notifier = {
10863 .notifier_call = nl80211_netlink_notify,
10864 };
10865
10866 void cfg80211_ft_event(struct net_device *netdev,
10867 struct cfg80211_ft_event_params *ft_event)
10868 {
10869 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10870 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10871 struct sk_buff *msg;
10872 void *hdr;
10873 int err;
10874
10875 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10876
10877 if (!ft_event->target_ap)
10878 return;
10879
10880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10881 if (!msg)
10882 return;
10883
10884 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10885 if (!hdr) {
10886 nlmsg_free(msg);
10887 return;
10888 }
10889
10890 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10891 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10892 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10893 if (ft_event->ies)
10894 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10895 if (ft_event->ric_ies)
10896 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10897 ft_event->ric_ies);
10898
10899 err = genlmsg_end(msg, hdr);
10900 if (err < 0) {
10901 nlmsg_free(msg);
10902 return;
10903 }
10904
10905 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10906 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10907 }
10908 EXPORT_SYMBOL(cfg80211_ft_event);
10909
10910 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10911 {
10912 struct cfg80211_registered_device *rdev;
10913 struct sk_buff *msg;
10914 void *hdr;
10915 u32 nlportid;
10916
10917 rdev = wiphy_to_dev(wdev->wiphy);
10918 if (!rdev->crit_proto_nlportid)
10919 return;
10920
10921 nlportid = rdev->crit_proto_nlportid;
10922 rdev->crit_proto_nlportid = 0;
10923
10924 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10925 if (!msg)
10926 return;
10927
10928 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10929 if (!hdr)
10930 goto nla_put_failure;
10931
10932 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10933 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10934 goto nla_put_failure;
10935
10936 genlmsg_end(msg, hdr);
10937
10938 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10939 return;
10940
10941 nla_put_failure:
10942 if (hdr)
10943 genlmsg_cancel(msg, hdr);
10944 nlmsg_free(msg);
10945
10946 }
10947 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10948
10949 /* initialisation/exit functions */
10950
10951 int nl80211_init(void)
10952 {
10953 int err;
10954
10955 err = genl_register_family_with_ops(&nl80211_fam,
10956 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10957 if (err)
10958 return err;
10959
10960 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10961 if (err)
10962 goto err_out;
10963
10964 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10965 if (err)
10966 goto err_out;
10967
10968 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10969 if (err)
10970 goto err_out;
10971
10972 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10973 if (err)
10974 goto err_out;
10975
10976 #ifdef CONFIG_NL80211_TESTMODE
10977 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10978 if (err)
10979 goto err_out;
10980
10981 err = genl_register_mc_group(&nl80211_fam, &nl80211_vendor_mcgrp);
10982 if (err)
10983 goto err_out;
10984 #endif
10985
10986 err = netlink_register_notifier(&nl80211_netlink_notifier);
10987 if (err)
10988 goto err_out;
10989
10990 return 0;
10991 err_out:
10992 genl_unregister_family(&nl80211_fam);
10993 return err;
10994 }
10995
10996 void nl80211_exit(void)
10997 {
10998 netlink_unregister_notifier(&nl80211_netlink_notifier);
10999 genl_unregister_family(&nl80211_fam);
11000 }
kernel source for telekom puls (alcatel/mediatek)