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Merge tag 'v3.10.108' 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] = { .len = WLAN_PMKID_LEN },
314 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
315 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
316 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
317 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
318 .len = IEEE80211_MAX_DATA_LEN },
319 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
320 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
321 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
322 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
323 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
325 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
326 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
327 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
328 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
329 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
330 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
331 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
332 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
333 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
334 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
335 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
336 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
337 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
338 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
339 .len = IEEE80211_MAX_DATA_LEN },
340 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
341 .len = IEEE80211_MAX_DATA_LEN },
342 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
344 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
345 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
346 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
347 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
348 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
350 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
351 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
352 .len = IEEE80211_MAX_DATA_LEN },
353 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
354 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
355 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
356 .len = NL80211_HT_CAPABILITY_LEN
357 },
358 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
359 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
360 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
361 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
362 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
363 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
364 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
365 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
366 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
367 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
368 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
369 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
370 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
371 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
372 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
373 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
374 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
375 .len = NL80211_VHT_CAPABILITY_LEN,
376 },
377 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
378 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
379 .len = IEEE80211_MAX_DATA_LEN },
380 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
381 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
382 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 };
387
388 /* policy for the key attributes */
389 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
390 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
391 [NL80211_KEY_IDX] = { .type = NLA_U8 },
392 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
393 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
394 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
395 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
396 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
397 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
398 };
399
400 /* policy for the key default flags */
401 static const struct nla_policy
402 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
403 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
404 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
405 };
406
407 /* policy for WoWLAN attributes */
408 static const struct nla_policy
409 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
410 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
411 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
412 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
413 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
414 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
415 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
418 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
419 };
420
421 static const struct nla_policy
422 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
423 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
424 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
425 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
426 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
427 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
428 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
429 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
430 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
431 },
432 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
433 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
434 },
435 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
437 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
438 };
439
440 /* policy for GTK rekey offload attributes */
441 static const struct nla_policy
442 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
443 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
444 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
445 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
446 };
447
448 static const struct nla_policy
449 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
450 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
451 .len = IEEE80211_MAX_SSID_LEN },
452 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
453 };
454
455 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
456 struct netlink_callback *cb,
457 struct cfg80211_registered_device **rdev,
458 struct wireless_dev **wdev)
459 {
460 int err;
461
462 rtnl_lock();
463 mutex_lock(&cfg80211_mutex);
464
465 if (!cb->args[0]) {
466 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
467 nl80211_fam.attrbuf, nl80211_fam.maxattr,
468 nl80211_policy);
469 if (err)
470 goto out_unlock;
471
472 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
473 nl80211_fam.attrbuf);
474 if (IS_ERR(*wdev)) {
475 err = PTR_ERR(*wdev);
476 goto out_unlock;
477 }
478 *rdev = wiphy_to_dev((*wdev)->wiphy);
479 /* 0 is the first index - add 1 to parse only once */
480 cb->args[0] = (*rdev)->wiphy_idx + 1;
481 cb->args[1] = (*wdev)->identifier;
482 } else {
483 /* subtract the 1 again here */
484 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
485 struct wireless_dev *tmp;
486
487 if (!wiphy) {
488 err = -ENODEV;
489 goto out_unlock;
490 }
491 *rdev = wiphy_to_dev(wiphy);
492 *wdev = NULL;
493
494 mutex_lock(&(*rdev)->devlist_mtx);
495 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
496 if (tmp->identifier == cb->args[1]) {
497 *wdev = tmp;
498 break;
499 }
500 }
501 mutex_unlock(&(*rdev)->devlist_mtx);
502
503 if (!*wdev) {
504 err = -ENODEV;
505 goto out_unlock;
506 }
507 }
508
509 cfg80211_lock_rdev(*rdev);
510
511 mutex_unlock(&cfg80211_mutex);
512 return 0;
513 out_unlock:
514 mutex_unlock(&cfg80211_mutex);
515 rtnl_unlock();
516 return err;
517 }
518
519 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
520 {
521 cfg80211_unlock_rdev(rdev);
522 rtnl_unlock();
523 }
524
525 /* IE validation */
526 static bool is_valid_ie_attr(const struct nlattr *attr)
527 {
528 const u8 *pos;
529 int len;
530
531 if (!attr)
532 return true;
533
534 pos = nla_data(attr);
535 len = nla_len(attr);
536
537 while (len) {
538 u8 elemlen;
539
540 if (len < 2)
541 return false;
542 len -= 2;
543
544 elemlen = pos[1];
545 if (elemlen > len)
546 return false;
547
548 len -= elemlen;
549 pos += 2 + elemlen;
550 }
551
552 return true;
553 }
554
555 /* message building helper */
556 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
557 int flags, u8 cmd)
558 {
559 /* since there is no private header just add the generic one */
560 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
561 }
562
563 static int nl80211_msg_put_channel(struct sk_buff *msg,
564 struct ieee80211_channel *chan,
565 bool large)
566 {
567 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
568 chan->center_freq))
569 goto nla_put_failure;
570
571 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
572 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
573 goto nla_put_failure;
574 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
575 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
576 goto nla_put_failure;
577 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
578 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
579 goto nla_put_failure;
580 if (chan->flags & IEEE80211_CHAN_RADAR) {
581 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
582 goto nla_put_failure;
583 if (large) {
584 u32 time;
585
586 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
587
588 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
589 chan->dfs_state))
590 goto nla_put_failure;
591 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
592 time))
593 goto nla_put_failure;
594 }
595 }
596
597 if (large) {
598 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
599 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
600 goto nla_put_failure;
601 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
602 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
603 goto nla_put_failure;
604 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
605 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
606 goto nla_put_failure;
607 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
608 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
609 goto nla_put_failure;
610 }
611
612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
613 DBM_TO_MBM(chan->max_power)))
614 goto nla_put_failure;
615
616 return 0;
617
618 nla_put_failure:
619 return -ENOBUFS;
620 }
621
622 /* netlink command implementations */
623
624 struct key_parse {
625 struct key_params p;
626 int idx;
627 int type;
628 bool def, defmgmt;
629 bool def_uni, def_multi;
630 };
631
632 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
633 {
634 struct nlattr *tb[NL80211_KEY_MAX + 1];
635 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
636 nl80211_key_policy);
637 if (err)
638 return err;
639
640 k->def = !!tb[NL80211_KEY_DEFAULT];
641 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
642
643 if (k->def) {
644 k->def_uni = true;
645 k->def_multi = true;
646 }
647 if (k->defmgmt)
648 k->def_multi = true;
649
650 if (tb[NL80211_KEY_IDX])
651 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
652
653 if (tb[NL80211_KEY_DATA]) {
654 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
655 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
656 }
657
658 if (tb[NL80211_KEY_SEQ]) {
659 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
660 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
661 }
662
663 if (tb[NL80211_KEY_CIPHER])
664 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
665
666 if (tb[NL80211_KEY_TYPE]) {
667 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
668 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
669 return -EINVAL;
670 }
671
672 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
673 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
674 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
675 tb[NL80211_KEY_DEFAULT_TYPES],
676 nl80211_key_default_policy);
677 if (err)
678 return err;
679
680 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
681 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
682 }
683
684 return 0;
685 }
686
687 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
688 {
689 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
690 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
691 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
692 }
693
694 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
695 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
696 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
697 }
698
699 if (info->attrs[NL80211_ATTR_KEY_IDX])
700 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
701
702 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
703 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
704
705 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
706 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
707
708 if (k->def) {
709 k->def_uni = true;
710 k->def_multi = true;
711 }
712 if (k->defmgmt)
713 k->def_multi = true;
714
715 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
716 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
717 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
718 return -EINVAL;
719 }
720
721 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
722 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
723 int err = nla_parse_nested(
724 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
725 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
726 nl80211_key_default_policy);
727 if (err)
728 return err;
729
730 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
731 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
732 }
733
734 return 0;
735 }
736
737 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
738 {
739 int err;
740
741 memset(k, 0, sizeof(*k));
742 k->idx = -1;
743 k->type = -1;
744
745 if (info->attrs[NL80211_ATTR_KEY])
746 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
747 else
748 err = nl80211_parse_key_old(info, k);
749
750 if (err)
751 return err;
752
753 if (k->def && k->defmgmt)
754 return -EINVAL;
755
756 if (k->defmgmt) {
757 if (k->def_uni || !k->def_multi)
758 return -EINVAL;
759 }
760
761 if (k->idx != -1) {
762 if (k->defmgmt) {
763 if (k->idx < 4 || k->idx > 5)
764 return -EINVAL;
765 } else if (k->def) {
766 if (k->idx < 0 || k->idx > 3)
767 return -EINVAL;
768 } else {
769 if (k->idx < 0 || k->idx > 5)
770 return -EINVAL;
771 }
772 }
773
774 return 0;
775 }
776
777 static struct cfg80211_cached_keys *
778 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
779 struct nlattr *keys, bool *no_ht)
780 {
781 struct key_parse parse;
782 struct nlattr *key;
783 struct cfg80211_cached_keys *result;
784 int rem, err, def = 0;
785
786 result = kzalloc(sizeof(*result), GFP_KERNEL);
787 if (!result)
788 return ERR_PTR(-ENOMEM);
789
790 result->def = -1;
791 result->defmgmt = -1;
792
793 nla_for_each_nested(key, keys, rem) {
794 memset(&parse, 0, sizeof(parse));
795 parse.idx = -1;
796
797 err = nl80211_parse_key_new(key, &parse);
798 if (err)
799 goto error;
800 err = -EINVAL;
801 if (!parse.p.key)
802 goto error;
803 if (parse.idx < 0 || parse.idx > 4)
804 goto error;
805 if (parse.def) {
806 if (def)
807 goto error;
808 def = 1;
809 result->def = parse.idx;
810 if (!parse.def_uni || !parse.def_multi)
811 goto error;
812 } else if (parse.defmgmt)
813 goto error;
814 err = cfg80211_validate_key_settings(rdev, &parse.p,
815 parse.idx, false, NULL);
816 if (err)
817 goto error;
818 result->params[parse.idx].cipher = parse.p.cipher;
819 result->params[parse.idx].key_len = parse.p.key_len;
820 result->params[parse.idx].key = result->data[parse.idx];
821 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
822
823 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
824 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
825 if (no_ht)
826 *no_ht = true;
827 }
828 }
829
830 return result;
831 error:
832 kfree(result);
833 return ERR_PTR(err);
834 }
835
836 static int nl80211_key_allowed(struct wireless_dev *wdev)
837 {
838 ASSERT_WDEV_LOCK(wdev);
839
840 switch (wdev->iftype) {
841 case NL80211_IFTYPE_AP:
842 case NL80211_IFTYPE_AP_VLAN:
843 case NL80211_IFTYPE_P2P_GO:
844 case NL80211_IFTYPE_MESH_POINT:
845 break;
846 case NL80211_IFTYPE_ADHOC:
847 if (!wdev->current_bss)
848 return -ENOLINK;
849 break;
850 case NL80211_IFTYPE_STATION:
851 case NL80211_IFTYPE_P2P_CLIENT:
852 if (wdev->sme_state != CFG80211_SME_CONNECTED)
853 return -ENOLINK;
854 break;
855 default:
856 return -EINVAL;
857 }
858
859 return 0;
860 }
861
862 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
863 {
864 struct nlattr *nl_modes = nla_nest_start(msg, attr);
865 int i;
866
867 if (!nl_modes)
868 goto nla_put_failure;
869
870 i = 0;
871 while (ifmodes) {
872 if ((ifmodes & 1) && nla_put_flag(msg, i))
873 goto nla_put_failure;
874 ifmodes >>= 1;
875 i++;
876 }
877
878 nla_nest_end(msg, nl_modes);
879 return 0;
880
881 nla_put_failure:
882 return -ENOBUFS;
883 }
884
885 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
886 struct sk_buff *msg,
887 bool large)
888 {
889 struct nlattr *nl_combis;
890 int i, j;
891
892 nl_combis = nla_nest_start(msg,
893 NL80211_ATTR_INTERFACE_COMBINATIONS);
894 if (!nl_combis)
895 goto nla_put_failure;
896
897 for (i = 0; i < wiphy->n_iface_combinations; i++) {
898 const struct ieee80211_iface_combination *c;
899 struct nlattr *nl_combi, *nl_limits;
900
901 c = &wiphy->iface_combinations[i];
902
903 nl_combi = nla_nest_start(msg, i + 1);
904 if (!nl_combi)
905 goto nla_put_failure;
906
907 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
908 if (!nl_limits)
909 goto nla_put_failure;
910
911 for (j = 0; j < c->n_limits; j++) {
912 struct nlattr *nl_limit;
913
914 nl_limit = nla_nest_start(msg, j + 1);
915 if (!nl_limit)
916 goto nla_put_failure;
917 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
918 c->limits[j].max))
919 goto nla_put_failure;
920 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
921 c->limits[j].types))
922 goto nla_put_failure;
923 nla_nest_end(msg, nl_limit);
924 }
925
926 nla_nest_end(msg, nl_limits);
927
928 if (c->beacon_int_infra_match &&
929 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
930 goto nla_put_failure;
931 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
932 c->num_different_channels) ||
933 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
934 c->max_interfaces))
935 goto nla_put_failure;
936 if (large &&
937 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
938 c->radar_detect_widths))
939 goto nla_put_failure;
940
941 nla_nest_end(msg, nl_combi);
942 }
943
944 nla_nest_end(msg, nl_combis);
945
946 return 0;
947 nla_put_failure:
948 return -ENOBUFS;
949 }
950
951 #ifdef CONFIG_PM
952 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
953 struct sk_buff *msg)
954 {
955 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
956 struct nlattr *nl_tcp;
957
958 if (!tcp)
959 return 0;
960
961 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
962 if (!nl_tcp)
963 return -ENOBUFS;
964
965 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
966 tcp->data_payload_max))
967 return -ENOBUFS;
968
969 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
970 tcp->data_payload_max))
971 return -ENOBUFS;
972
973 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
974 return -ENOBUFS;
975
976 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
977 sizeof(*tcp->tok), tcp->tok))
978 return -ENOBUFS;
979
980 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
981 tcp->data_interval_max))
982 return -ENOBUFS;
983
984 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
985 tcp->wake_payload_max))
986 return -ENOBUFS;
987
988 nla_nest_end(msg, nl_tcp);
989 return 0;
990 }
991
992 static int nl80211_send_wowlan(struct sk_buff *msg,
993 struct cfg80211_registered_device *dev,
994 bool large)
995 {
996 struct nlattr *nl_wowlan;
997
998 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
999 return 0;
1000
1001 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1002 if (!nl_wowlan)
1003 return -ENOBUFS;
1004
1005 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1007 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1009 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1010 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1011 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1012 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1013 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1014 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1015 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1016 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1017 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1018 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1019 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1020 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1021 return -ENOBUFS;
1022
1023 if (dev->wiphy.wowlan.n_patterns) {
1024 struct nl80211_wowlan_pattern_support pat = {
1025 .max_patterns = dev->wiphy.wowlan.n_patterns,
1026 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
1027 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
1028 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
1029 };
1030
1031 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1032 sizeof(pat), &pat))
1033 return -ENOBUFS;
1034 }
1035
1036 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1037 return -ENOBUFS;
1038
1039 nla_nest_end(msg, nl_wowlan);
1040
1041 return 0;
1042 }
1043 #endif
1044
1045 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1046 struct ieee80211_supported_band *sband)
1047 {
1048 struct nlattr *nl_rates, *nl_rate;
1049 struct ieee80211_rate *rate;
1050 int i;
1051
1052 /* add HT info */
1053 if (sband->ht_cap.ht_supported &&
1054 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1055 sizeof(sband->ht_cap.mcs),
1056 &sband->ht_cap.mcs) ||
1057 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1058 sband->ht_cap.cap) ||
1059 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1060 sband->ht_cap.ampdu_factor) ||
1061 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1062 sband->ht_cap.ampdu_density)))
1063 return -ENOBUFS;
1064
1065 /* add VHT info */
1066 if (sband->vht_cap.vht_supported &&
1067 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1068 sizeof(sband->vht_cap.vht_mcs),
1069 &sband->vht_cap.vht_mcs) ||
1070 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1071 sband->vht_cap.cap)))
1072 return -ENOBUFS;
1073
1074 /* add bitrates */
1075 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1076 if (!nl_rates)
1077 return -ENOBUFS;
1078
1079 for (i = 0; i < sband->n_bitrates; i++) {
1080 nl_rate = nla_nest_start(msg, i);
1081 if (!nl_rate)
1082 return -ENOBUFS;
1083
1084 rate = &sband->bitrates[i];
1085 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1086 rate->bitrate))
1087 return -ENOBUFS;
1088 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1089 nla_put_flag(msg,
1090 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1091 return -ENOBUFS;
1092
1093 nla_nest_end(msg, nl_rate);
1094 }
1095
1096 nla_nest_end(msg, nl_rates);
1097
1098 return 0;
1099 }
1100
1101 static int
1102 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1103 const struct ieee80211_txrx_stypes *mgmt_stypes)
1104 {
1105 u16 stypes;
1106 struct nlattr *nl_ftypes, *nl_ifs;
1107 enum nl80211_iftype ift;
1108 int i;
1109
1110 if (!mgmt_stypes)
1111 return 0;
1112
1113 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1114 if (!nl_ifs)
1115 return -ENOBUFS;
1116
1117 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1118 nl_ftypes = nla_nest_start(msg, ift);
1119 if (!nl_ftypes)
1120 return -ENOBUFS;
1121 i = 0;
1122 stypes = mgmt_stypes[ift].tx;
1123 while (stypes) {
1124 if ((stypes & 1) &&
1125 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1126 (i << 4) | IEEE80211_FTYPE_MGMT))
1127 return -ENOBUFS;
1128 stypes >>= 1;
1129 i++;
1130 }
1131 nla_nest_end(msg, nl_ftypes);
1132 }
1133
1134 nla_nest_end(msg, nl_ifs);
1135
1136 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1137 if (!nl_ifs)
1138 return -ENOBUFS;
1139
1140 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1141 nl_ftypes = nla_nest_start(msg, ift);
1142 if (!nl_ftypes)
1143 return -ENOBUFS;
1144 i = 0;
1145 stypes = mgmt_stypes[ift].rx;
1146 while (stypes) {
1147 if ((stypes & 1) &&
1148 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1149 (i << 4) | IEEE80211_FTYPE_MGMT))
1150 return -ENOBUFS;
1151 stypes >>= 1;
1152 i++;
1153 }
1154 nla_nest_end(msg, nl_ftypes);
1155 }
1156 nla_nest_end(msg, nl_ifs);
1157
1158 return 0;
1159 }
1160
1161 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1162 struct sk_buff *msg, u32 portid, u32 seq,
1163 int flags, bool split, long *split_start,
1164 long *band_start, long *chan_start)
1165 {
1166 void *hdr;
1167 struct nlattr *nl_bands, *nl_band;
1168 struct nlattr *nl_freqs, *nl_freq;
1169 struct nlattr *nl_cmds;
1170 enum ieee80211_band band;
1171 struct ieee80211_channel *chan;
1172 int i;
1173 const struct ieee80211_txrx_stypes *mgmt_stypes =
1174 dev->wiphy.mgmt_stypes;
1175 long start = 0, start_chan = 0, start_band = 0;
1176 u32 features;
1177
1178 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1179 if (!hdr)
1180 return -ENOBUFS;
1181
1182 /* allow always using the variables */
1183 if (!split) {
1184 split_start = &start;
1185 band_start = &start_band;
1186 chan_start = &start_chan;
1187 }
1188
1189 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1190 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1191 wiphy_name(&dev->wiphy)) ||
1192 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1193 cfg80211_rdev_list_generation))
1194 goto nla_put_failure;
1195
1196 switch (*split_start) {
1197 case 0:
1198 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1199 dev->wiphy.retry_short) ||
1200 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1201 dev->wiphy.retry_long) ||
1202 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1203 dev->wiphy.frag_threshold) ||
1204 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1205 dev->wiphy.rts_threshold) ||
1206 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1207 dev->wiphy.coverage_class) ||
1208 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1209 dev->wiphy.max_scan_ssids) ||
1210 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1211 dev->wiphy.max_sched_scan_ssids) ||
1212 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1213 dev->wiphy.max_scan_ie_len) ||
1214 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1215 dev->wiphy.max_sched_scan_ie_len) ||
1216 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1217 dev->wiphy.max_match_sets))
1218 goto nla_put_failure;
1219
1220 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1221 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1222 goto nla_put_failure;
1223 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1224 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1225 goto nla_put_failure;
1226 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1227 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1228 goto nla_put_failure;
1229 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1230 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1231 goto nla_put_failure;
1232 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1233 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1234 goto nla_put_failure;
1235 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1236 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1237 goto nla_put_failure;
1238
1239 (*split_start)++;
1240 if (split)
1241 break;
1242 case 1:
1243 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1244 sizeof(u32) * dev->wiphy.n_cipher_suites,
1245 dev->wiphy.cipher_suites))
1246 goto nla_put_failure;
1247
1248 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1249 dev->wiphy.max_num_pmkids))
1250 goto nla_put_failure;
1251
1252 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1253 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1254 goto nla_put_failure;
1255
1256 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1257 dev->wiphy.available_antennas_tx) ||
1258 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1259 dev->wiphy.available_antennas_rx))
1260 goto nla_put_failure;
1261
1262 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1263 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1264 dev->wiphy.probe_resp_offload))
1265 goto nla_put_failure;
1266
1267 if ((dev->wiphy.available_antennas_tx ||
1268 dev->wiphy.available_antennas_rx) &&
1269 dev->ops->get_antenna) {
1270 u32 tx_ant = 0, rx_ant = 0;
1271 int res;
1272 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1273 if (!res) {
1274 if (nla_put_u32(msg,
1275 NL80211_ATTR_WIPHY_ANTENNA_TX,
1276 tx_ant) ||
1277 nla_put_u32(msg,
1278 NL80211_ATTR_WIPHY_ANTENNA_RX,
1279 rx_ant))
1280 goto nla_put_failure;
1281 }
1282 }
1283
1284 (*split_start)++;
1285 if (split)
1286 break;
1287 case 2:
1288 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1289 dev->wiphy.interface_modes))
1290 goto nla_put_failure;
1291 (*split_start)++;
1292 if (split)
1293 break;
1294 case 3:
1295 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1296 if (!nl_bands)
1297 goto nla_put_failure;
1298
1299 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1300 struct ieee80211_supported_band *sband;
1301
1302 sband = dev->wiphy.bands[band];
1303
1304 if (!sband)
1305 continue;
1306
1307 nl_band = nla_nest_start(msg, band);
1308 if (!nl_band)
1309 goto nla_put_failure;
1310
1311 switch (*chan_start) {
1312 case 0:
1313 if (nl80211_send_band_rateinfo(msg, sband))
1314 goto nla_put_failure;
1315 (*chan_start)++;
1316 if (split)
1317 break;
1318 default:
1319 /* add frequencies */
1320 nl_freqs = nla_nest_start(
1321 msg, NL80211_BAND_ATTR_FREQS);
1322 if (!nl_freqs)
1323 goto nla_put_failure;
1324
1325 for (i = *chan_start - 1;
1326 i < sband->n_channels;
1327 i++) {
1328 nl_freq = nla_nest_start(msg, i);
1329 if (!nl_freq)
1330 goto nla_put_failure;
1331
1332 chan = &sband->channels[i];
1333
1334 if (nl80211_msg_put_channel(msg, chan,
1335 split))
1336 goto nla_put_failure;
1337
1338 nla_nest_end(msg, nl_freq);
1339 if (split)
1340 break;
1341 }
1342 if (i < sband->n_channels)
1343 *chan_start = i + 2;
1344 else
1345 *chan_start = 0;
1346 nla_nest_end(msg, nl_freqs);
1347 }
1348
1349 nla_nest_end(msg, nl_band);
1350
1351 if (split) {
1352 /* start again here */
1353 if (*chan_start)
1354 band--;
1355 break;
1356 }
1357 }
1358 nla_nest_end(msg, nl_bands);
1359
1360 if (band < IEEE80211_NUM_BANDS)
1361 *band_start = band + 1;
1362 else
1363 *band_start = 0;
1364
1365 /* if bands & channels are done, continue outside */
1366 if (*band_start == 0 && *chan_start == 0)
1367 (*split_start)++;
1368 if (split)
1369 break;
1370 case 4:
1371 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1372 if (!nl_cmds)
1373 goto nla_put_failure;
1374
1375 i = 0;
1376 #define CMD(op, n) \
1377 do { \
1378 if (dev->ops->op) { \
1379 i++; \
1380 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1381 goto nla_put_failure; \
1382 } \
1383 } while (0)
1384
1385 CMD(add_virtual_intf, NEW_INTERFACE);
1386 CMD(change_virtual_intf, SET_INTERFACE);
1387 CMD(add_key, NEW_KEY);
1388 CMD(start_ap, START_AP);
1389 CMD(add_station, NEW_STATION);
1390 CMD(add_mpath, NEW_MPATH);
1391 CMD(update_mesh_config, SET_MESH_CONFIG);
1392 CMD(change_bss, SET_BSS);
1393 CMD(auth, AUTHENTICATE);
1394 CMD(assoc, ASSOCIATE);
1395 CMD(deauth, DEAUTHENTICATE);
1396 CMD(disassoc, DISASSOCIATE);
1397 CMD(join_ibss, JOIN_IBSS);
1398 CMD(join_mesh, JOIN_MESH);
1399 CMD(set_pmksa, SET_PMKSA);
1400 CMD(del_pmksa, DEL_PMKSA);
1401 CMD(flush_pmksa, FLUSH_PMKSA);
1402 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1403 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1404 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1405 CMD(mgmt_tx, FRAME);
1406 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1407 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1408 i++;
1409 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1410 goto nla_put_failure;
1411 }
1412 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1413 dev->ops->join_mesh) {
1414 i++;
1415 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1416 goto nla_put_failure;
1417 }
1418 CMD(set_wds_peer, SET_WDS_PEER);
1419 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1420 CMD(tdls_mgmt, TDLS_MGMT);
1421 CMD(tdls_oper, TDLS_OPER);
1422 }
1423 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1424 CMD(sched_scan_start, START_SCHED_SCAN);
1425 CMD(probe_client, PROBE_CLIENT);
1426 CMD(set_noack_map, SET_NOACK_MAP);
1427 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1428 i++;
1429 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1430 goto nla_put_failure;
1431 }
1432 CMD(start_p2p_device, START_P2P_DEVICE);
1433 CMD(set_mcast_rate, SET_MCAST_RATE);
1434 if (split) {
1435 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1436 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1437 }
1438
1439 #ifdef CONFIG_NL80211_TESTMODE
1440 CMD(testmode_cmd, TESTMODE);
1441 #endif
1442
1443 #undef CMD
1444
1445 if (dev->ops->connect || dev->ops->auth) {
1446 i++;
1447 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1448 goto nla_put_failure;
1449 }
1450
1451 if (dev->ops->disconnect || dev->ops->deauth) {
1452 i++;
1453 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1454 goto nla_put_failure;
1455 }
1456
1457 nla_nest_end(msg, nl_cmds);
1458 (*split_start)++;
1459 if (split)
1460 break;
1461 case 5:
1462 if (dev->ops->remain_on_channel &&
1463 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1464 nla_put_u32(msg,
1465 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1466 dev->wiphy.max_remain_on_channel_duration))
1467 goto nla_put_failure;
1468
1469 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1470 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1471 goto nla_put_failure;
1472
1473 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1474 goto nla_put_failure;
1475 (*split_start)++;
1476 if (split)
1477 break;
1478 case 6:
1479 #ifdef CONFIG_PM
1480 if (nl80211_send_wowlan(msg, dev, split))
1481 goto nla_put_failure;
1482 (*split_start)++;
1483 if (split)
1484 break;
1485 #else
1486 (*split_start)++;
1487 #endif
1488 case 7:
1489 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1490 dev->wiphy.software_iftypes))
1491 goto nla_put_failure;
1492
1493 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1494 goto nla_put_failure;
1495
1496 (*split_start)++;
1497 if (split)
1498 break;
1499 case 8:
1500 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1501 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1502 dev->wiphy.ap_sme_capa))
1503 goto nla_put_failure;
1504
1505 features = dev->wiphy.features;
1506 /*
1507 * We can only add the per-channel limit information if the
1508 * dump is split, otherwise it makes it too big. Therefore
1509 * only advertise it in that case.
1510 */
1511 if (split)
1512 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1513 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1514 goto nla_put_failure;
1515
1516 if (dev->wiphy.ht_capa_mod_mask &&
1517 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1518 sizeof(*dev->wiphy.ht_capa_mod_mask),
1519 dev->wiphy.ht_capa_mod_mask))
1520 goto nla_put_failure;
1521
1522 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1523 dev->wiphy.max_acl_mac_addrs &&
1524 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1525 dev->wiphy.max_acl_mac_addrs))
1526 goto nla_put_failure;
1527
1528 if (dev->wiphy.n_vendor_commands) {
1529 const struct nl80211_vendor_cmd_info *info;
1530 struct nlattr *nested;
1531
1532 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1533 if (!nested)
1534 goto nla_put_failure;
1535
1536 for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1537 info = &dev->wiphy.vendor_commands[i].info;
1538 if (nla_put(msg, i + 1, sizeof(*info), info))
1539 goto nla_put_failure;
1540 }
1541 nla_nest_end(msg, nested);
1542 }
1543
1544 if (dev->wiphy.n_vendor_events) {
1545 const struct nl80211_vendor_cmd_info *info;
1546 struct nlattr *nested;
1547
1548 nested = nla_nest_start(msg,
1549 NL80211_ATTR_VENDOR_EVENTS);
1550 if (!nested)
1551 goto nla_put_failure;
1552
1553 for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1554 info = &dev->wiphy.vendor_events[i];
1555 if (nla_put(msg, i + 1, sizeof(*info), info))
1556 goto nla_put_failure;
1557 }
1558 nla_nest_end(msg, nested);
1559 }
1560
1561 /*
1562 * Any information below this point is only available to
1563 * applications that can deal with it being split. This
1564 * helps ensure that newly added capabilities don't break
1565 * older tools by overrunning their buffers.
1566 *
1567 * We still increment split_start so that in the split
1568 * case we'll continue with more data in the next round,
1569 * but break unconditionally so unsplit data stops here.
1570 */
1571 (*split_start)++;
1572 break;
1573 case 9:
1574 if (dev->wiphy.extended_capabilities &&
1575 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1576 dev->wiphy.extended_capabilities_len,
1577 dev->wiphy.extended_capabilities) ||
1578 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1579 dev->wiphy.extended_capabilities_len,
1580 dev->wiphy.extended_capabilities_mask)))
1581 goto nla_put_failure;
1582
1583 if (dev->wiphy.vht_capa_mod_mask &&
1584 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1585 sizeof(*dev->wiphy.vht_capa_mod_mask),
1586 dev->wiphy.vht_capa_mod_mask))
1587 goto nla_put_failure;
1588
1589 /* done */
1590 *split_start = 0;
1591 break;
1592 }
1593 return genlmsg_end(msg, hdr);
1594
1595 nla_put_failure:
1596 genlmsg_cancel(msg, hdr);
1597 return -EMSGSIZE;
1598 }
1599
1600 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1601 {
1602 int idx = 0, ret;
1603 int start = cb->args[0];
1604 struct cfg80211_registered_device *dev;
1605 s64 filter_wiphy = -1;
1606 bool split = false;
1607 struct nlattr **tb;
1608 int res;
1609
1610 /* will be zeroed in nlmsg_parse() */
1611 tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
1612 if (!tb)
1613 return -ENOMEM;
1614
1615 mutex_lock(&cfg80211_mutex);
1616 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1617 tb, NL80211_ATTR_MAX, nl80211_policy);
1618 if (res == 0) {
1619 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1620 if (tb[NL80211_ATTR_WIPHY])
1621 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1622 if (tb[NL80211_ATTR_WDEV])
1623 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1624 if (tb[NL80211_ATTR_IFINDEX]) {
1625 struct net_device *netdev;
1626 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1627
1628 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1629 if (!netdev) {
1630 mutex_unlock(&cfg80211_mutex);
1631 kfree(tb);
1632 return -ENODEV;
1633 }
1634 if (netdev->ieee80211_ptr) {
1635 dev = wiphy_to_dev(
1636 netdev->ieee80211_ptr->wiphy);
1637 filter_wiphy = dev->wiphy_idx;
1638 }
1639 dev_put(netdev);
1640 }
1641 }
1642 kfree(tb);
1643
1644 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1645 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1646 continue;
1647 if (++idx <= start)
1648 continue;
1649 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1650 continue;
1651 /* attempt to fit multiple wiphy data chunks into the skb */
1652 do {
1653 ret = nl80211_send_wiphy(dev, skb,
1654 NETLINK_CB(cb->skb).portid,
1655 cb->nlh->nlmsg_seq,
1656 NLM_F_MULTI,
1657 split, &cb->args[1],
1658 &cb->args[2],
1659 &cb->args[3]);
1660 if (ret < 0) {
1661 /*
1662 * If sending the wiphy data didn't fit (ENOBUFS
1663 * or EMSGSIZE returned), this SKB is still
1664 * empty (so it's not too big because another
1665 * wiphy dataset is already in the skb) and
1666 * we've not tried to adjust the dump allocation
1667 * yet ... then adjust the alloc size to be
1668 * bigger, and return 1 but with the empty skb.
1669 * This results in an empty message being RX'ed
1670 * in userspace, but that is ignored.
1671 *
1672 * We can then retry with the larger buffer.
1673 */
1674 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1675 !skb->len &&
1676 cb->min_dump_alloc < 4096) {
1677 cb->min_dump_alloc = 4096;
1678 mutex_unlock(&cfg80211_mutex);
1679 return 1;
1680 }
1681 idx--;
1682 break;
1683 }
1684 } while (cb->args[1] > 0);
1685 break;
1686 }
1687 mutex_unlock(&cfg80211_mutex);
1688
1689 cb->args[0] = idx;
1690
1691 return skb->len;
1692 }
1693
1694 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1695 {
1696 struct sk_buff *msg;
1697 struct cfg80211_registered_device *dev = info->user_ptr[0];
1698
1699 msg = nlmsg_new(4096, GFP_KERNEL);
1700 if (!msg)
1701 return -ENOMEM;
1702
1703 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1704 false, NULL, NULL, NULL) < 0) {
1705 nlmsg_free(msg);
1706 return -ENOBUFS;
1707 }
1708
1709 return genlmsg_reply(msg, info);
1710 }
1711
1712 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1713 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1714 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1715 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1716 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1717 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1718 };
1719
1720 static int parse_txq_params(struct nlattr *tb[],
1721 struct ieee80211_txq_params *txq_params)
1722 {
1723 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1724 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1725 !tb[NL80211_TXQ_ATTR_AIFS])
1726 return -EINVAL;
1727
1728 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1729 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1730 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1731 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1732 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1733
1734 if (txq_params->ac >= NL80211_NUM_ACS)
1735 return -EINVAL;
1736
1737 return 0;
1738 }
1739
1740 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1741 {
1742 /*
1743 * You can only set the channel explicitly for WDS interfaces,
1744 * all others have their channel managed via their respective
1745 * "establish a connection" command (connect, join, ...)
1746 *
1747 * For AP/GO and mesh mode, the channel can be set with the
1748 * channel userspace API, but is only stored and passed to the
1749 * low-level driver when the AP starts or the mesh is joined.
1750 * This is for backward compatibility, userspace can also give
1751 * the channel in the start-ap or join-mesh commands instead.
1752 *
1753 * Monitors are special as they are normally slaved to
1754 * whatever else is going on, so they have their own special
1755 * operation to set the monitor channel if possible.
1756 */
1757 return !wdev ||
1758 wdev->iftype == NL80211_IFTYPE_AP ||
1759 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1760 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1761 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1762 }
1763
1764 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1765 struct genl_info *info,
1766 struct cfg80211_chan_def *chandef)
1767 {
1768 u32 control_freq;
1769
1770 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1771 return -EINVAL;
1772
1773 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1774
1775 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1776 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1777 chandef->center_freq1 = control_freq;
1778 chandef->center_freq2 = 0;
1779
1780 /* Primary channel not allowed */
1781 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1782 return -EINVAL;
1783
1784 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1785 enum nl80211_channel_type chantype;
1786
1787 chantype = nla_get_u32(
1788 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1789
1790 switch (chantype) {
1791 case NL80211_CHAN_NO_HT:
1792 case NL80211_CHAN_HT20:
1793 case NL80211_CHAN_HT40PLUS:
1794 case NL80211_CHAN_HT40MINUS:
1795 cfg80211_chandef_create(chandef, chandef->chan,
1796 chantype);
1797 break;
1798 default:
1799 return -EINVAL;
1800 }
1801 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1802 chandef->width =
1803 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1804 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1805 chandef->center_freq1 =
1806 nla_get_u32(
1807 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1808 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1809 chandef->center_freq2 =
1810 nla_get_u32(
1811 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1812 }
1813
1814 if (!cfg80211_chandef_valid(chandef))
1815 return -EINVAL;
1816
1817 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1818 IEEE80211_CHAN_DISABLED))
1819 return -EINVAL;
1820
1821 return 0;
1822 }
1823
1824 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1825 struct wireless_dev *wdev,
1826 struct genl_info *info)
1827 {
1828 struct cfg80211_chan_def chandef;
1829 int result;
1830 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1831
1832 if (wdev)
1833 iftype = wdev->iftype;
1834
1835 if (!nl80211_can_set_dev_channel(wdev))
1836 return -EOPNOTSUPP;
1837
1838 result = nl80211_parse_chandef(rdev, info, &chandef);
1839 if (result)
1840 return result;
1841
1842 mutex_lock(&rdev->devlist_mtx);
1843 switch (iftype) {
1844 case NL80211_IFTYPE_AP:
1845 case NL80211_IFTYPE_P2P_GO:
1846 if (wdev->beacon_interval) {
1847 result = -EBUSY;
1848 break;
1849 }
1850 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1851 result = -EINVAL;
1852 break;
1853 }
1854 wdev->preset_chandef = chandef;
1855 result = 0;
1856 break;
1857 case NL80211_IFTYPE_MESH_POINT:
1858 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1859 break;
1860 case NL80211_IFTYPE_MONITOR:
1861 result = cfg80211_set_monitor_channel(rdev, &chandef);
1862 break;
1863 default:
1864 result = -EINVAL;
1865 }
1866 mutex_unlock(&rdev->devlist_mtx);
1867
1868 return result;
1869 }
1870
1871 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1872 {
1873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1874 struct net_device *netdev = info->user_ptr[1];
1875
1876 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1877 }
1878
1879 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1880 {
1881 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1882 struct net_device *dev = info->user_ptr[1];
1883 struct wireless_dev *wdev = dev->ieee80211_ptr;
1884 const u8 *bssid;
1885
1886 if (!info->attrs[NL80211_ATTR_MAC])
1887 return -EINVAL;
1888
1889 if (netif_running(dev))
1890 return -EBUSY;
1891
1892 if (!rdev->ops->set_wds_peer)
1893 return -EOPNOTSUPP;
1894
1895 if (wdev->iftype != NL80211_IFTYPE_WDS)
1896 return -EOPNOTSUPP;
1897
1898 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1899 return rdev_set_wds_peer(rdev, dev, bssid);
1900 }
1901
1902
1903 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1904 {
1905 struct cfg80211_registered_device *rdev;
1906 struct net_device *netdev = NULL;
1907 struct wireless_dev *wdev;
1908 int result = 0, rem_txq_params = 0;
1909 struct nlattr *nl_txq_params;
1910 u32 changed;
1911 u8 retry_short = 0, retry_long = 0;
1912 u32 frag_threshold = 0, rts_threshold = 0;
1913 u8 coverage_class = 0;
1914
1915 /*
1916 * Try to find the wiphy and netdev. Normally this
1917 * function shouldn't need the netdev, but this is
1918 * done for backward compatibility -- previously
1919 * setting the channel was done per wiphy, but now
1920 * it is per netdev. Previous userland like hostapd
1921 * also passed a netdev to set_wiphy, so that it is
1922 * possible to let that go to the right netdev!
1923 */
1924 mutex_lock(&cfg80211_mutex);
1925
1926 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1927 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1928
1929 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1930 if (netdev && netdev->ieee80211_ptr) {
1931 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1932 mutex_lock(&rdev->mtx);
1933 } else
1934 netdev = NULL;
1935 }
1936
1937 if (!netdev) {
1938 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1939 info->attrs);
1940 if (IS_ERR(rdev)) {
1941 mutex_unlock(&cfg80211_mutex);
1942 return PTR_ERR(rdev);
1943 }
1944 wdev = NULL;
1945 netdev = NULL;
1946 result = 0;
1947
1948 mutex_lock(&rdev->mtx);
1949 } else
1950 wdev = netdev->ieee80211_ptr;
1951
1952 /*
1953 * end workaround code, by now the rdev is available
1954 * and locked, and wdev may or may not be NULL.
1955 */
1956
1957 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1958 result = cfg80211_dev_rename(
1959 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1960
1961 mutex_unlock(&cfg80211_mutex);
1962
1963 if (result)
1964 goto bad_res;
1965
1966 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1967 struct ieee80211_txq_params txq_params;
1968 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1969
1970 if (!rdev->ops->set_txq_params) {
1971 result = -EOPNOTSUPP;
1972 goto bad_res;
1973 }
1974
1975 if (!netdev) {
1976 result = -EINVAL;
1977 goto bad_res;
1978 }
1979
1980 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1981 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1982 result = -EINVAL;
1983 goto bad_res;
1984 }
1985
1986 if (!netif_running(netdev)) {
1987 result = -ENETDOWN;
1988 goto bad_res;
1989 }
1990
1991 nla_for_each_nested(nl_txq_params,
1992 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1993 rem_txq_params) {
1994 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1995 nla_data(nl_txq_params),
1996 nla_len(nl_txq_params),
1997 txq_params_policy);
1998 result = parse_txq_params(tb, &txq_params);
1999 if (result)
2000 goto bad_res;
2001
2002 result = rdev_set_txq_params(rdev, netdev,
2003 &txq_params);
2004 if (result)
2005 goto bad_res;
2006 }
2007 }
2008
2009 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2010 result = __nl80211_set_channel(rdev,
2011 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2012 info);
2013 if (result)
2014 goto bad_res;
2015 }
2016
2017 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2018 struct wireless_dev *txp_wdev = wdev;
2019 enum nl80211_tx_power_setting type;
2020 int idx, mbm = 0;
2021
2022 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2023 txp_wdev = NULL;
2024
2025 if (!rdev->ops->set_tx_power) {
2026 result = -EOPNOTSUPP;
2027 goto bad_res;
2028 }
2029
2030 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2031 type = nla_get_u32(info->attrs[idx]);
2032
2033 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2034 (type != NL80211_TX_POWER_AUTOMATIC)) {
2035 result = -EINVAL;
2036 goto bad_res;
2037 }
2038
2039 if (type != NL80211_TX_POWER_AUTOMATIC) {
2040 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2041 mbm = nla_get_u32(info->attrs[idx]);
2042 }
2043
2044 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2045 if (result)
2046 goto bad_res;
2047 }
2048
2049 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2050 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2051 u32 tx_ant, rx_ant;
2052 if ((!rdev->wiphy.available_antennas_tx &&
2053 !rdev->wiphy.available_antennas_rx) ||
2054 !rdev->ops->set_antenna) {
2055 result = -EOPNOTSUPP;
2056 goto bad_res;
2057 }
2058
2059 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2060 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2061
2062 /* reject antenna configurations which don't match the
2063 * available antenna masks, except for the "all" mask */
2064 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2065 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2066 result = -EINVAL;
2067 goto bad_res;
2068 }
2069
2070 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2071 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2072
2073 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2074 if (result)
2075 goto bad_res;
2076 }
2077
2078 changed = 0;
2079
2080 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2081 retry_short = nla_get_u8(
2082 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2083 if (retry_short == 0) {
2084 result = -EINVAL;
2085 goto bad_res;
2086 }
2087 changed |= WIPHY_PARAM_RETRY_SHORT;
2088 }
2089
2090 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2091 retry_long = nla_get_u8(
2092 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2093 if (retry_long == 0) {
2094 result = -EINVAL;
2095 goto bad_res;
2096 }
2097 changed |= WIPHY_PARAM_RETRY_LONG;
2098 }
2099
2100 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2101 frag_threshold = nla_get_u32(
2102 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2103 if (frag_threshold < 256) {
2104 result = -EINVAL;
2105 goto bad_res;
2106 }
2107 if (frag_threshold != (u32) -1) {
2108 /*
2109 * Fragments (apart from the last one) are required to
2110 * have even length. Make the fragmentation code
2111 * simpler by stripping LSB should someone try to use
2112 * odd threshold value.
2113 */
2114 frag_threshold &= ~0x1;
2115 }
2116 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2117 }
2118
2119 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2120 rts_threshold = nla_get_u32(
2121 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2122 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2123 }
2124
2125 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2126 coverage_class = nla_get_u8(
2127 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2128 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2129 }
2130
2131 if (changed) {
2132 u8 old_retry_short, old_retry_long;
2133 u32 old_frag_threshold, old_rts_threshold;
2134 u8 old_coverage_class;
2135
2136 if (!rdev->ops->set_wiphy_params) {
2137 result = -EOPNOTSUPP;
2138 goto bad_res;
2139 }
2140
2141 old_retry_short = rdev->wiphy.retry_short;
2142 old_retry_long = rdev->wiphy.retry_long;
2143 old_frag_threshold = rdev->wiphy.frag_threshold;
2144 old_rts_threshold = rdev->wiphy.rts_threshold;
2145 old_coverage_class = rdev->wiphy.coverage_class;
2146
2147 if (changed & WIPHY_PARAM_RETRY_SHORT)
2148 rdev->wiphy.retry_short = retry_short;
2149 if (changed & WIPHY_PARAM_RETRY_LONG)
2150 rdev->wiphy.retry_long = retry_long;
2151 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2152 rdev->wiphy.frag_threshold = frag_threshold;
2153 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2154 rdev->wiphy.rts_threshold = rts_threshold;
2155 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2156 rdev->wiphy.coverage_class = coverage_class;
2157
2158 result = rdev_set_wiphy_params(rdev, changed);
2159 if (result) {
2160 rdev->wiphy.retry_short = old_retry_short;
2161 rdev->wiphy.retry_long = old_retry_long;
2162 rdev->wiphy.frag_threshold = old_frag_threshold;
2163 rdev->wiphy.rts_threshold = old_rts_threshold;
2164 rdev->wiphy.coverage_class = old_coverage_class;
2165 }
2166 }
2167
2168 bad_res:
2169 mutex_unlock(&rdev->mtx);
2170 if (netdev)
2171 dev_put(netdev);
2172 return result;
2173 }
2174
2175 static inline u64 wdev_id(struct wireless_dev *wdev)
2176 {
2177 return (u64)wdev->identifier |
2178 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2179 }
2180
2181 static int nl80211_send_chandef(struct sk_buff *msg,
2182 struct cfg80211_chan_def *chandef)
2183 {
2184 WARN_ON(!cfg80211_chandef_valid(chandef));
2185
2186 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2187 chandef->chan->center_freq))
2188 return -ENOBUFS;
2189 switch (chandef->width) {
2190 case NL80211_CHAN_WIDTH_20_NOHT:
2191 case NL80211_CHAN_WIDTH_20:
2192 case NL80211_CHAN_WIDTH_40:
2193 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2194 cfg80211_get_chandef_type(chandef)))
2195 return -ENOBUFS;
2196 break;
2197 default:
2198 break;
2199 }
2200 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2201 return -ENOBUFS;
2202 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2203 return -ENOBUFS;
2204 if (chandef->center_freq2 &&
2205 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2206 return -ENOBUFS;
2207 return 0;
2208 }
2209
2210 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2211 struct cfg80211_registered_device *rdev,
2212 struct wireless_dev *wdev)
2213 {
2214 struct net_device *dev = wdev->netdev;
2215 void *hdr;
2216
2217 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2218 if (!hdr)
2219 return -1;
2220
2221 if (dev &&
2222 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2223 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2224 goto nla_put_failure;
2225
2226 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2227 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2228 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2229 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2230 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2231 rdev->devlist_generation ^
2232 (cfg80211_rdev_list_generation << 2)))
2233 goto nla_put_failure;
2234
2235 if (rdev->ops->get_channel) {
2236 int ret;
2237 struct cfg80211_chan_def chandef;
2238
2239 ret = rdev_get_channel(rdev, wdev, &chandef);
2240 if (ret == 0) {
2241 if (nl80211_send_chandef(msg, &chandef))
2242 goto nla_put_failure;
2243 }
2244 }
2245
2246 if (wdev->ssid_len) {
2247 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2248 goto nla_put_failure;
2249 }
2250
2251 return genlmsg_end(msg, hdr);
2252
2253 nla_put_failure:
2254 genlmsg_cancel(msg, hdr);
2255 return -EMSGSIZE;
2256 }
2257
2258 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2259 {
2260 int wp_idx = 0;
2261 int if_idx = 0;
2262 int wp_start = cb->args[0];
2263 int if_start = cb->args[1];
2264 struct cfg80211_registered_device *rdev;
2265 struct wireless_dev *wdev;
2266
2267 mutex_lock(&cfg80211_mutex);
2268 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2269 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2270 continue;
2271 if (wp_idx < wp_start) {
2272 wp_idx++;
2273 continue;
2274 }
2275 if_idx = 0;
2276
2277 mutex_lock(&rdev->devlist_mtx);
2278 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2279 if (if_idx < if_start) {
2280 if_idx++;
2281 continue;
2282 }
2283 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2284 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2285 rdev, wdev) < 0) {
2286 mutex_unlock(&rdev->devlist_mtx);
2287 goto out;
2288 }
2289 if_idx++;
2290 }
2291 mutex_unlock(&rdev->devlist_mtx);
2292
2293 wp_idx++;
2294 }
2295 out:
2296 mutex_unlock(&cfg80211_mutex);
2297
2298 cb->args[0] = wp_idx;
2299 cb->args[1] = if_idx;
2300
2301 return skb->len;
2302 }
2303
2304 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2305 {
2306 struct sk_buff *msg;
2307 struct cfg80211_registered_device *dev = info->user_ptr[0];
2308 struct wireless_dev *wdev = info->user_ptr[1];
2309
2310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2311 if (!msg)
2312 return -ENOMEM;
2313
2314 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2315 dev, wdev) < 0) {
2316 nlmsg_free(msg);
2317 return -ENOBUFS;
2318 }
2319
2320 return genlmsg_reply(msg, info);
2321 }
2322
2323 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2324 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2325 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2326 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2327 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2328 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2329 };
2330
2331 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2332 {
2333 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2334 int flag;
2335
2336 *mntrflags = 0;
2337
2338 if (!nla)
2339 return -EINVAL;
2340
2341 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2342 nla, mntr_flags_policy))
2343 return -EINVAL;
2344
2345 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2346 if (flags[flag])
2347 *mntrflags |= (1<<flag);
2348
2349 return 0;
2350 }
2351
2352 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2353 struct net_device *netdev, u8 use_4addr,
2354 enum nl80211_iftype iftype)
2355 {
2356 if (!use_4addr) {
2357 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2358 return -EBUSY;
2359 return 0;
2360 }
2361
2362 switch (iftype) {
2363 case NL80211_IFTYPE_AP_VLAN:
2364 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2365 return 0;
2366 break;
2367 case NL80211_IFTYPE_STATION:
2368 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2369 return 0;
2370 break;
2371 default:
2372 break;
2373 }
2374
2375 return -EOPNOTSUPP;
2376 }
2377
2378 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2379 {
2380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381 struct vif_params params;
2382 int err;
2383 enum nl80211_iftype otype, ntype;
2384 struct net_device *dev = info->user_ptr[1];
2385 u32 _flags, *flags = NULL;
2386 bool change = false;
2387
2388 memset(&params, 0, sizeof(params));
2389
2390 otype = ntype = dev->ieee80211_ptr->iftype;
2391
2392 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2393 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2394 if (otype != ntype)
2395 change = true;
2396 if (ntype > NL80211_IFTYPE_MAX)
2397 return -EINVAL;
2398 }
2399
2400 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2401 struct wireless_dev *wdev = dev->ieee80211_ptr;
2402
2403 if (ntype != NL80211_IFTYPE_MESH_POINT)
2404 return -EINVAL;
2405 if (netif_running(dev))
2406 return -EBUSY;
2407
2408 wdev_lock(wdev);
2409 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2410 IEEE80211_MAX_MESH_ID_LEN);
2411 wdev->mesh_id_up_len =
2412 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2413 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2414 wdev->mesh_id_up_len);
2415 wdev_unlock(wdev);
2416 }
2417
2418 if (info->attrs[NL80211_ATTR_4ADDR]) {
2419 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2420 change = true;
2421 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2422 if (err)
2423 return err;
2424 } else {
2425 params.use_4addr = -1;
2426 }
2427
2428 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2429 if (ntype != NL80211_IFTYPE_MONITOR)
2430 return -EINVAL;
2431 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2432 &_flags);
2433 if (err)
2434 return err;
2435
2436 flags = &_flags;
2437 change = true;
2438 }
2439
2440 if (change)
2441 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2442 else
2443 err = 0;
2444
2445 if (!err && params.use_4addr != -1)
2446 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2447
2448 return err;
2449 }
2450
2451 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2452 {
2453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2454 struct vif_params params;
2455 struct wireless_dev *wdev;
2456 struct sk_buff *msg;
2457 int err;
2458 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2459 u32 flags;
2460
2461 memset(&params, 0, sizeof(params));
2462
2463 if (!info->attrs[NL80211_ATTR_IFNAME])
2464 return -EINVAL;
2465
2466 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2467 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2468 if (type > NL80211_IFTYPE_MAX)
2469 return -EINVAL;
2470 }
2471
2472 if (!rdev->ops->add_virtual_intf ||
2473 !(rdev->wiphy.interface_modes & (1 << type)))
2474 return -EOPNOTSUPP;
2475
2476 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2477 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2478 ETH_ALEN);
2479 if (!is_valid_ether_addr(params.macaddr))
2480 return -EADDRNOTAVAIL;
2481 }
2482
2483 if (info->attrs[NL80211_ATTR_4ADDR]) {
2484 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2485 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2486 if (err)
2487 return err;
2488 }
2489
2490 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2491 if (!msg)
2492 return -ENOMEM;
2493
2494 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2495 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2496 &flags);
2497 wdev = rdev_add_virtual_intf(rdev,
2498 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2499 type, err ? NULL : &flags, &params);
2500 if (IS_ERR(wdev)) {
2501 nlmsg_free(msg);
2502 return PTR_ERR(wdev);
2503 }
2504
2505 switch (type) {
2506 case NL80211_IFTYPE_MESH_POINT:
2507 if (!info->attrs[NL80211_ATTR_MESH_ID])
2508 break;
2509 wdev_lock(wdev);
2510 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2511 IEEE80211_MAX_MESH_ID_LEN);
2512 wdev->mesh_id_up_len =
2513 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2514 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2515 wdev->mesh_id_up_len);
2516 wdev_unlock(wdev);
2517 break;
2518 case NL80211_IFTYPE_P2P_DEVICE:
2519 /*
2520 * P2P Device doesn't have a netdev, so doesn't go
2521 * through the netdev notifier and must be added here
2522 */
2523 mutex_init(&wdev->mtx);
2524 INIT_LIST_HEAD(&wdev->event_list);
2525 spin_lock_init(&wdev->event_lock);
2526 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2527 spin_lock_init(&wdev->mgmt_registrations_lock);
2528
2529 mutex_lock(&rdev->devlist_mtx);
2530 wdev->identifier = ++rdev->wdev_id;
2531 list_add_rcu(&wdev->list, &rdev->wdev_list);
2532 rdev->devlist_generation++;
2533 mutex_unlock(&rdev->devlist_mtx);
2534 break;
2535 default:
2536 break;
2537 }
2538
2539 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2540 rdev, wdev) < 0) {
2541 nlmsg_free(msg);
2542 return -ENOBUFS;
2543 }
2544
2545 return genlmsg_reply(msg, info);
2546 }
2547
2548 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2549 {
2550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2551 struct wireless_dev *wdev = info->user_ptr[1];
2552
2553 if (!rdev->ops->del_virtual_intf)
2554 return -EOPNOTSUPP;
2555
2556 /*
2557 * If we remove a wireless device without a netdev then clear
2558 * user_ptr[1] so that nl80211_post_doit won't dereference it
2559 * to check if it needs to do dev_put(). Otherwise it crashes
2560 * since the wdev has been freed, unlike with a netdev where
2561 * we need the dev_put() for the netdev to really be freed.
2562 */
2563 if (!wdev->netdev)
2564 info->user_ptr[1] = NULL;
2565
2566 return rdev_del_virtual_intf(rdev, wdev);
2567 }
2568
2569 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2570 {
2571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2572 struct net_device *dev = info->user_ptr[1];
2573 u16 noack_map;
2574
2575 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2576 return -EINVAL;
2577
2578 if (!rdev->ops->set_noack_map)
2579 return -EOPNOTSUPP;
2580
2581 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2582
2583 return rdev_set_noack_map(rdev, dev, noack_map);
2584 }
2585
2586 struct get_key_cookie {
2587 struct sk_buff *msg;
2588 int error;
2589 int idx;
2590 };
2591
2592 static void get_key_callback(void *c, struct key_params *params)
2593 {
2594 struct nlattr *key;
2595 struct get_key_cookie *cookie = c;
2596
2597 if ((params->key &&
2598 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2599 params->key_len, params->key)) ||
2600 (params->seq &&
2601 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2602 params->seq_len, params->seq)) ||
2603 (params->cipher &&
2604 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2605 params->cipher)))
2606 goto nla_put_failure;
2607
2608 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2609 if (!key)
2610 goto nla_put_failure;
2611
2612 if ((params->key &&
2613 nla_put(cookie->msg, NL80211_KEY_DATA,
2614 params->key_len, params->key)) ||
2615 (params->seq &&
2616 nla_put(cookie->msg, NL80211_KEY_SEQ,
2617 params->seq_len, params->seq)) ||
2618 (params->cipher &&
2619 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2620 params->cipher)))
2621 goto nla_put_failure;
2622
2623 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2624 goto nla_put_failure;
2625
2626 nla_nest_end(cookie->msg, key);
2627
2628 return;
2629 nla_put_failure:
2630 cookie->error = 1;
2631 }
2632
2633 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2634 {
2635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2636 int err;
2637 struct net_device *dev = info->user_ptr[1];
2638 u8 key_idx = 0;
2639 const u8 *mac_addr = NULL;
2640 bool pairwise;
2641 struct get_key_cookie cookie = {
2642 .error = 0,
2643 };
2644 void *hdr;
2645 struct sk_buff *msg;
2646
2647 if (info->attrs[NL80211_ATTR_KEY_IDX])
2648 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2649
2650 if (key_idx > 5)
2651 return -EINVAL;
2652
2653 if (info->attrs[NL80211_ATTR_MAC])
2654 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2655
2656 pairwise = !!mac_addr;
2657 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2658 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2659 if (kt >= NUM_NL80211_KEYTYPES)
2660 return -EINVAL;
2661 if (kt != NL80211_KEYTYPE_GROUP &&
2662 kt != NL80211_KEYTYPE_PAIRWISE)
2663 return -EINVAL;
2664 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2665 }
2666
2667 if (!rdev->ops->get_key)
2668 return -EOPNOTSUPP;
2669
2670 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2671 return -ENOENT;
2672
2673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2674 if (!msg)
2675 return -ENOMEM;
2676
2677 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2678 NL80211_CMD_NEW_KEY);
2679 if (!hdr)
2680 goto nla_put_failure;
2681
2682 cookie.msg = msg;
2683 cookie.idx = key_idx;
2684
2685 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2686 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2687 goto nla_put_failure;
2688 if (mac_addr &&
2689 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2690 goto nla_put_failure;
2691
2692 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2693 get_key_callback);
2694
2695 if (err)
2696 goto free_msg;
2697
2698 if (cookie.error)
2699 goto nla_put_failure;
2700
2701 genlmsg_end(msg, hdr);
2702 return genlmsg_reply(msg, info);
2703
2704 nla_put_failure:
2705 err = -ENOBUFS;
2706 free_msg:
2707 nlmsg_free(msg);
2708 return err;
2709 }
2710
2711 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2712 {
2713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2714 struct key_parse key;
2715 int err;
2716 struct net_device *dev = info->user_ptr[1];
2717
2718 err = nl80211_parse_key(info, &key);
2719 if (err)
2720 return err;
2721
2722 if (key.idx < 0)
2723 return -EINVAL;
2724
2725 /* only support setting default key */
2726 if (!key.def && !key.defmgmt)
2727 return -EINVAL;
2728
2729 wdev_lock(dev->ieee80211_ptr);
2730
2731 if (key.def) {
2732 if (!rdev->ops->set_default_key) {
2733 err = -EOPNOTSUPP;
2734 goto out;
2735 }
2736
2737 err = nl80211_key_allowed(dev->ieee80211_ptr);
2738 if (err)
2739 goto out;
2740
2741 err = rdev_set_default_key(rdev, dev, key.idx,
2742 key.def_uni, key.def_multi);
2743
2744 if (err)
2745 goto out;
2746
2747 #ifdef CONFIG_CFG80211_WEXT
2748 dev->ieee80211_ptr->wext.default_key = key.idx;
2749 #endif
2750 } else {
2751 if (key.def_uni || !key.def_multi) {
2752 err = -EINVAL;
2753 goto out;
2754 }
2755
2756 if (!rdev->ops->set_default_mgmt_key) {
2757 err = -EOPNOTSUPP;
2758 goto out;
2759 }
2760
2761 err = nl80211_key_allowed(dev->ieee80211_ptr);
2762 if (err)
2763 goto out;
2764
2765 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2766 if (err)
2767 goto out;
2768
2769 #ifdef CONFIG_CFG80211_WEXT
2770 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2771 #endif
2772 }
2773
2774 out:
2775 wdev_unlock(dev->ieee80211_ptr);
2776
2777 return err;
2778 }
2779
2780 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2781 {
2782 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2783 int err;
2784 struct net_device *dev = info->user_ptr[1];
2785 struct key_parse key;
2786 const u8 *mac_addr = NULL;
2787
2788 err = nl80211_parse_key(info, &key);
2789 if (err)
2790 return err;
2791
2792 if (!key.p.key)
2793 return -EINVAL;
2794
2795 if (info->attrs[NL80211_ATTR_MAC])
2796 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2797
2798 if (key.type == -1) {
2799 if (mac_addr)
2800 key.type = NL80211_KEYTYPE_PAIRWISE;
2801 else
2802 key.type = NL80211_KEYTYPE_GROUP;
2803 }
2804
2805 /* for now */
2806 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2807 key.type != NL80211_KEYTYPE_GROUP)
2808 return -EINVAL;
2809
2810 if (!rdev->ops->add_key)
2811 return -EOPNOTSUPP;
2812
2813 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2814 key.type == NL80211_KEYTYPE_PAIRWISE,
2815 mac_addr))
2816 return -EINVAL;
2817
2818 wdev_lock(dev->ieee80211_ptr);
2819 err = nl80211_key_allowed(dev->ieee80211_ptr);
2820 if (!err)
2821 err = rdev_add_key(rdev, dev, key.idx,
2822 key.type == NL80211_KEYTYPE_PAIRWISE,
2823 mac_addr, &key.p);
2824 wdev_unlock(dev->ieee80211_ptr);
2825
2826 return err;
2827 }
2828
2829 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2830 {
2831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2832 int err;
2833 struct net_device *dev = info->user_ptr[1];
2834 u8 *mac_addr = NULL;
2835 struct key_parse key;
2836
2837 err = nl80211_parse_key(info, &key);
2838 if (err)
2839 return err;
2840
2841 if (info->attrs[NL80211_ATTR_MAC])
2842 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2843
2844 if (key.type == -1) {
2845 if (mac_addr)
2846 key.type = NL80211_KEYTYPE_PAIRWISE;
2847 else
2848 key.type = NL80211_KEYTYPE_GROUP;
2849 }
2850
2851 /* for now */
2852 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2853 key.type != NL80211_KEYTYPE_GROUP)
2854 return -EINVAL;
2855
2856 if (!rdev->ops->del_key)
2857 return -EOPNOTSUPP;
2858
2859 wdev_lock(dev->ieee80211_ptr);
2860 err = nl80211_key_allowed(dev->ieee80211_ptr);
2861
2862 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
2863 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2864 err = -ENOENT;
2865
2866 if (!err)
2867 err = rdev_del_key(rdev, dev, key.idx,
2868 key.type == NL80211_KEYTYPE_PAIRWISE,
2869 mac_addr);
2870
2871 #ifdef CONFIG_CFG80211_WEXT
2872 if (!err) {
2873 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2874 dev->ieee80211_ptr->wext.default_key = -1;
2875 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2876 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2877 }
2878 #endif
2879 wdev_unlock(dev->ieee80211_ptr);
2880
2881 return err;
2882 }
2883
2884 /* This function returns an error or the number of nested attributes */
2885 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2886 {
2887 struct nlattr *attr;
2888 int n_entries = 0, tmp;
2889
2890 nla_for_each_nested(attr, nl_attr, tmp) {
2891 if (nla_len(attr) != ETH_ALEN)
2892 return -EINVAL;
2893
2894 n_entries++;
2895 }
2896
2897 return n_entries;
2898 }
2899
2900 /*
2901 * This function parses ACL information and allocates memory for ACL data.
2902 * On successful return, the calling function is responsible to free the
2903 * ACL buffer returned by this function.
2904 */
2905 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2906 struct genl_info *info)
2907 {
2908 enum nl80211_acl_policy acl_policy;
2909 struct nlattr *attr;
2910 struct cfg80211_acl_data *acl;
2911 int i = 0, n_entries, tmp;
2912
2913 if (!wiphy->max_acl_mac_addrs)
2914 return ERR_PTR(-EOPNOTSUPP);
2915
2916 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2917 return ERR_PTR(-EINVAL);
2918
2919 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2920 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2921 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2922 return ERR_PTR(-EINVAL);
2923
2924 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2925 return ERR_PTR(-EINVAL);
2926
2927 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2928 if (n_entries < 0)
2929 return ERR_PTR(n_entries);
2930
2931 if (n_entries > wiphy->max_acl_mac_addrs)
2932 return ERR_PTR(-ENOTSUPP);
2933
2934 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2935 GFP_KERNEL);
2936 if (!acl)
2937 return ERR_PTR(-ENOMEM);
2938
2939 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2940 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2941 i++;
2942 }
2943
2944 acl->n_acl_entries = n_entries;
2945 acl->acl_policy = acl_policy;
2946
2947 return acl;
2948 }
2949
2950 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2951 {
2952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2953 struct net_device *dev = info->user_ptr[1];
2954 struct cfg80211_acl_data *acl;
2955 int err;
2956
2957 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2958 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2959 return -EOPNOTSUPP;
2960
2961 if (!dev->ieee80211_ptr->beacon_interval)
2962 return -EINVAL;
2963
2964 acl = parse_acl_data(&rdev->wiphy, info);
2965 if (IS_ERR(acl))
2966 return PTR_ERR(acl);
2967
2968 err = rdev_set_mac_acl(rdev, dev, acl);
2969
2970 kfree(acl);
2971
2972 return err;
2973 }
2974
2975 static int nl80211_parse_beacon(struct genl_info *info,
2976 struct cfg80211_beacon_data *bcn)
2977 {
2978 bool haveinfo = false;
2979
2980 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2981 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2982 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2983 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2984 return -EINVAL;
2985
2986 memset(bcn, 0, sizeof(*bcn));
2987
2988 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2989 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2990 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2991 if (!bcn->head_len)
2992 return -EINVAL;
2993 haveinfo = true;
2994 }
2995
2996 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2997 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2998 bcn->tail_len =
2999 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
3000 haveinfo = true;
3001 }
3002
3003 if (!haveinfo)
3004 return -EINVAL;
3005
3006 if (info->attrs[NL80211_ATTR_IE]) {
3007 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
3008 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3009 }
3010
3011 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3012 bcn->proberesp_ies =
3013 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3014 bcn->proberesp_ies_len =
3015 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3016 }
3017
3018 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3019 bcn->assocresp_ies =
3020 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3021 bcn->assocresp_ies_len =
3022 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3023 }
3024
3025 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
3026 bcn->probe_resp =
3027 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
3028 bcn->probe_resp_len =
3029 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
3030 }
3031
3032 return 0;
3033 }
3034
3035 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3036 struct cfg80211_ap_settings *params)
3037 {
3038 struct wireless_dev *wdev;
3039 bool ret = false;
3040
3041 mutex_lock(&rdev->devlist_mtx);
3042
3043 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3044 if (wdev->iftype != NL80211_IFTYPE_AP &&
3045 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3046 continue;
3047
3048 if (!wdev->preset_chandef.chan)
3049 continue;
3050
3051 params->chandef = wdev->preset_chandef;
3052 ret = true;
3053 break;
3054 }
3055
3056 mutex_unlock(&rdev->devlist_mtx);
3057
3058 return ret;
3059 }
3060
3061 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3062 enum nl80211_auth_type auth_type,
3063 enum nl80211_commands cmd)
3064 {
3065 if (auth_type > NL80211_AUTHTYPE_MAX)
3066 return false;
3067
3068 switch (cmd) {
3069 case NL80211_CMD_AUTHENTICATE:
3070 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3071 auth_type == NL80211_AUTHTYPE_SAE)
3072 return false;
3073 return true;
3074 case NL80211_CMD_CONNECT:
3075 case NL80211_CMD_START_AP:
3076 /* SAE not supported yet */
3077 if (auth_type == NL80211_AUTHTYPE_SAE)
3078 return false;
3079 return true;
3080 default:
3081 return false;
3082 }
3083 }
3084
3085 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3086 {
3087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3088 struct net_device *dev = info->user_ptr[1];
3089 struct wireless_dev *wdev = dev->ieee80211_ptr;
3090 struct cfg80211_ap_settings params;
3091 int err;
3092 u8 radar_detect_width = 0;
3093
3094 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3095 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3096 return -EOPNOTSUPP;
3097
3098 if (!rdev->ops->start_ap)
3099 return -EOPNOTSUPP;
3100
3101 if (wdev->beacon_interval)
3102 return -EALREADY;
3103
3104 memset(&params, 0, sizeof(params));
3105
3106 /* these are required for START_AP */
3107 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3108 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3109 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3110 return -EINVAL;
3111
3112 err = nl80211_parse_beacon(info, &params.beacon);
3113 if (err)
3114 return err;
3115
3116 params.beacon_interval =
3117 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3118 params.dtim_period =
3119 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3120
3121 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3122 if (err)
3123 return err;
3124
3125 /*
3126 * In theory, some of these attributes should be required here
3127 * but since they were not used when the command was originally
3128 * added, keep them optional for old user space programs to let
3129 * them continue to work with drivers that do not need the
3130 * additional information -- drivers must check!
3131 */
3132 if (info->attrs[NL80211_ATTR_SSID]) {
3133 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3134 params.ssid_len =
3135 nla_len(info->attrs[NL80211_ATTR_SSID]);
3136 if (params.ssid_len == 0 ||
3137 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3138 return -EINVAL;
3139 }
3140
3141 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3142 params.hidden_ssid = nla_get_u32(
3143 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3144 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3145 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3146 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3147 return -EINVAL;
3148 }
3149
3150 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3151
3152 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3153 params.auth_type = nla_get_u32(
3154 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3155 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3156 NL80211_CMD_START_AP))
3157 return -EINVAL;
3158 } else
3159 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3160
3161 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3162 NL80211_MAX_NR_CIPHER_SUITES);
3163 if (err)
3164 return err;
3165
3166 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3167 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3168 return -EOPNOTSUPP;
3169 params.inactivity_timeout = nla_get_u16(
3170 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3171 }
3172
3173 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3174 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3175 return -EINVAL;
3176 params.p2p_ctwindow =
3177 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3178 if (params.p2p_ctwindow > 127)
3179 return -EINVAL;
3180 if (params.p2p_ctwindow != 0 &&
3181 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3182 return -EINVAL;
3183 }
3184
3185 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3186 u8 tmp;
3187
3188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3189 return -EINVAL;
3190 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3191 if (tmp > 1)
3192 return -EINVAL;
3193 params.p2p_opp_ps = tmp;
3194 if (params.p2p_opp_ps != 0 &&
3195 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3196 return -EINVAL;
3197 }
3198
3199 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3200 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3201 if (err)
3202 return err;
3203 } else if (wdev->preset_chandef.chan) {
3204 params.chandef = wdev->preset_chandef;
3205 } else if (!nl80211_get_ap_channel(rdev, &params))
3206 return -EINVAL;
3207
3208 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3209 return -EINVAL;
3210
3211 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3212 if (err < 0)
3213 return err;
3214 if (err) {
3215 radar_detect_width = BIT(params.chandef.width);
3216 params.radar_required = true;
3217 }
3218
3219 mutex_lock(&rdev->devlist_mtx);
3220 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3221 params.chandef.chan,
3222 CHAN_MODE_SHARED,
3223 radar_detect_width);
3224 mutex_unlock(&rdev->devlist_mtx);
3225
3226 if (err)
3227 return err;
3228
3229 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3230 params.acl = parse_acl_data(&rdev->wiphy, info);
3231 if (IS_ERR(params.acl))
3232 return PTR_ERR(params.acl);
3233 }
3234
3235 err = rdev_start_ap(rdev, dev, &params);
3236 if (!err) {
3237 wdev->preset_chandef = params.chandef;
3238 wdev->beacon_interval = params.beacon_interval;
3239 wdev->channel = params.chandef.chan;
3240 wdev->ssid_len = params.ssid_len;
3241 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3242 }
3243
3244 kfree(params.acl);
3245
3246 return err;
3247 }
3248
3249 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3250 {
3251 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3252 struct net_device *dev = info->user_ptr[1];
3253 struct wireless_dev *wdev = dev->ieee80211_ptr;
3254 struct cfg80211_beacon_data params;
3255 int err;
3256
3257 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3258 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3259 return -EOPNOTSUPP;
3260
3261 if (!rdev->ops->change_beacon)
3262 return -EOPNOTSUPP;
3263
3264 if (!wdev->beacon_interval)
3265 return -EINVAL;
3266
3267 err = nl80211_parse_beacon(info, &params);
3268 if (err)
3269 return err;
3270
3271 return rdev_change_beacon(rdev, dev, &params);
3272 }
3273
3274 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3275 {
3276 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3277 struct net_device *dev = info->user_ptr[1];
3278
3279 return cfg80211_stop_ap(rdev, dev);
3280 }
3281
3282 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3283 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3284 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3285 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3286 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3287 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3288 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3289 };
3290
3291 static int parse_station_flags(struct genl_info *info,
3292 enum nl80211_iftype iftype,
3293 struct station_parameters *params)
3294 {
3295 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3296 struct nlattr *nla;
3297 int flag;
3298
3299 /*
3300 * Try parsing the new attribute first so userspace
3301 * can specify both for older kernels.
3302 */
3303 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3304 if (nla) {
3305 struct nl80211_sta_flag_update *sta_flags;
3306
3307 sta_flags = nla_data(nla);
3308 params->sta_flags_mask = sta_flags->mask;
3309 params->sta_flags_set = sta_flags->set;
3310 params->sta_flags_set &= params->sta_flags_mask;
3311 if ((params->sta_flags_mask |
3312 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3313 return -EINVAL;
3314 return 0;
3315 }
3316
3317 /* if present, parse the old attribute */
3318
3319 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3320 if (!nla)
3321 return 0;
3322
3323 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3324 nla, sta_flags_policy))
3325 return -EINVAL;
3326
3327 /*
3328 * Only allow certain flags for interface types so that
3329 * other attributes are silently ignored. Remember that
3330 * this is backward compatibility code with old userspace
3331 * and shouldn't be hit in other cases anyway.
3332 */
3333 switch (iftype) {
3334 case NL80211_IFTYPE_AP:
3335 case NL80211_IFTYPE_AP_VLAN:
3336 case NL80211_IFTYPE_P2P_GO:
3337 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3338 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3339 BIT(NL80211_STA_FLAG_WME) |
3340 BIT(NL80211_STA_FLAG_MFP);
3341 break;
3342 case NL80211_IFTYPE_P2P_CLIENT:
3343 case NL80211_IFTYPE_STATION:
3344 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3345 BIT(NL80211_STA_FLAG_TDLS_PEER);
3346 break;
3347 case NL80211_IFTYPE_MESH_POINT:
3348 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3349 BIT(NL80211_STA_FLAG_MFP) |
3350 BIT(NL80211_STA_FLAG_AUTHORIZED);
3351 default:
3352 return -EINVAL;
3353 }
3354
3355 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3356 if (flags[flag]) {
3357 params->sta_flags_set |= (1<<flag);
3358
3359 /* no longer support new API additions in old API */
3360 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3361 return -EINVAL;
3362 }
3363 }
3364
3365 return 0;
3366 }
3367
3368 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3369 int attr)
3370 {
3371 struct nlattr *rate;
3372 u32 bitrate;
3373 u16 bitrate_compat;
3374
3375 rate = nla_nest_start(msg, attr);
3376 if (!rate)
3377 return false;
3378
3379 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3380 bitrate = cfg80211_calculate_bitrate(info);
3381 /* report 16-bit bitrate only if we can */
3382 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3383 if (bitrate > 0 &&
3384 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3385 return false;
3386 if (bitrate_compat > 0 &&
3387 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3388 return false;
3389
3390 if (info->flags & RATE_INFO_FLAGS_MCS) {
3391 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3392 return false;
3393 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3394 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3395 return false;
3396 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3397 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3398 return false;
3399 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3400 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3401 return false;
3402 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3403 return false;
3404 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3405 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3406 return false;
3407 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3408 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3409 return false;
3410 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3411 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3412 return false;
3413 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3414 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3415 return false;
3416 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3417 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3418 return false;
3419 }
3420
3421 nla_nest_end(msg, rate);
3422 return true;
3423 }
3424
3425 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3426 int flags,
3427 struct cfg80211_registered_device *rdev,
3428 struct net_device *dev,
3429 const u8 *mac_addr, struct station_info *sinfo)
3430 {
3431 void *hdr;
3432 struct nlattr *sinfoattr, *bss_param;
3433
3434 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3435 if (!hdr)
3436 return -1;
3437
3438 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3439 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3440 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3441 goto nla_put_failure;
3442
3443 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3444 if (!sinfoattr)
3445 goto nla_put_failure;
3446 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3447 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3448 sinfo->connected_time))
3449 goto nla_put_failure;
3450 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3451 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3452 sinfo->inactive_time))
3453 goto nla_put_failure;
3454 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3455 STATION_INFO_RX_BYTES64)) &&
3456 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3457 (u32)sinfo->rx_bytes))
3458 goto nla_put_failure;
3459 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3460 STATION_INFO_TX_BYTES64)) &&
3461 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3462 (u32)sinfo->tx_bytes))
3463 goto nla_put_failure;
3464 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3465 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3466 sinfo->rx_bytes))
3467 goto nla_put_failure;
3468 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3469 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3470 sinfo->tx_bytes))
3471 goto nla_put_failure;
3472 if ((sinfo->filled & STATION_INFO_LLID) &&
3473 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3474 goto nla_put_failure;
3475 if ((sinfo->filled & STATION_INFO_PLID) &&
3476 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3477 goto nla_put_failure;
3478 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3479 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3480 sinfo->plink_state))
3481 goto nla_put_failure;
3482 switch (rdev->wiphy.signal_type) {
3483 case CFG80211_SIGNAL_TYPE_MBM:
3484 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3485 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3486 sinfo->signal))
3487 goto nla_put_failure;
3488 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3489 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3490 sinfo->signal_avg))
3491 goto nla_put_failure;
3492 break;
3493 default:
3494 break;
3495 }
3496 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3497 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3498 NL80211_STA_INFO_TX_BITRATE))
3499 goto nla_put_failure;
3500 }
3501 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3502 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3503 NL80211_STA_INFO_RX_BITRATE))
3504 goto nla_put_failure;
3505 }
3506 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3507 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3508 sinfo->rx_packets))
3509 goto nla_put_failure;
3510 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3511 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3512 sinfo->tx_packets))
3513 goto nla_put_failure;
3514 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3515 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3516 sinfo->tx_retries))
3517 goto nla_put_failure;
3518 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3519 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3520 sinfo->tx_failed))
3521 goto nla_put_failure;
3522 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3523 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3524 sinfo->beacon_loss_count))
3525 goto nla_put_failure;
3526 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3527 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3528 sinfo->local_pm))
3529 goto nla_put_failure;
3530 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3531 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3532 sinfo->peer_pm))
3533 goto nla_put_failure;
3534 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3535 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3536 sinfo->nonpeer_pm))
3537 goto nla_put_failure;
3538 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3539 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3540 if (!bss_param)
3541 goto nla_put_failure;
3542
3543 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3544 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3545 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3546 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3547 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3548 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3549 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3550 sinfo->bss_param.dtim_period) ||
3551 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3552 sinfo->bss_param.beacon_interval))
3553 goto nla_put_failure;
3554
3555 nla_nest_end(msg, bss_param);
3556 }
3557 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3558 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3559 sizeof(struct nl80211_sta_flag_update),
3560 &sinfo->sta_flags))
3561 goto nla_put_failure;
3562 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3563 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3564 sinfo->t_offset))
3565 goto nla_put_failure;
3566 nla_nest_end(msg, sinfoattr);
3567
3568 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3569 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3570 sinfo->assoc_req_ies))
3571 goto nla_put_failure;
3572
3573 return genlmsg_end(msg, hdr);
3574
3575 nla_put_failure:
3576 genlmsg_cancel(msg, hdr);
3577 return -EMSGSIZE;
3578 }
3579
3580 static int nl80211_dump_station(struct sk_buff *skb,
3581 struct netlink_callback *cb)
3582 {
3583 struct station_info sinfo;
3584 struct cfg80211_registered_device *dev;
3585 struct wireless_dev *wdev;
3586 u8 mac_addr[ETH_ALEN];
3587 int sta_idx = cb->args[2];
3588 int err;
3589
3590 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3591 if (err)
3592 return err;
3593
3594 if (!wdev->netdev) {
3595 err = -EINVAL;
3596 goto out_err;
3597 }
3598
3599 if (!dev->ops->dump_station) {
3600 err = -EOPNOTSUPP;
3601 goto out_err;
3602 }
3603
3604 while (1) {
3605 memset(&sinfo, 0, sizeof(sinfo));
3606 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3607 mac_addr, &sinfo);
3608 if (err == -ENOENT)
3609 break;
3610 if (err)
3611 goto out_err;
3612
3613 if (nl80211_send_station(skb,
3614 NETLINK_CB(cb->skb).portid,
3615 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3616 dev, wdev->netdev, mac_addr,
3617 &sinfo) < 0)
3618 goto out;
3619
3620 sta_idx++;
3621 }
3622
3623
3624 out:
3625 cb->args[2] = sta_idx;
3626 err = skb->len;
3627 out_err:
3628 nl80211_finish_wdev_dump(dev);
3629
3630 return err;
3631 }
3632
3633 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3634 {
3635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636 struct net_device *dev = info->user_ptr[1];
3637 struct station_info sinfo;
3638 struct sk_buff *msg;
3639 u8 *mac_addr = NULL;
3640 int err;
3641
3642 memset(&sinfo, 0, sizeof(sinfo));
3643
3644 if (!info->attrs[NL80211_ATTR_MAC])
3645 return -EINVAL;
3646
3647 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3648
3649 if (!rdev->ops->get_station)
3650 return -EOPNOTSUPP;
3651
3652 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3653 if (err)
3654 return err;
3655
3656 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3657 if (!msg)
3658 return -ENOMEM;
3659
3660 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3661 rdev, dev, mac_addr, &sinfo) < 0) {
3662 nlmsg_free(msg);
3663 return -ENOBUFS;
3664 }
3665
3666 return genlmsg_reply(msg, info);
3667 }
3668
3669 int cfg80211_check_station_change(struct wiphy *wiphy,
3670 struct station_parameters *params,
3671 enum cfg80211_station_type statype)
3672 {
3673 if (params->listen_interval != -1)
3674 return -EINVAL;
3675 if (params->aid)
3676 return -EINVAL;
3677
3678 /* When you run into this, adjust the code below for the new flag */
3679 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3680
3681 switch (statype) {
3682 case CFG80211_STA_MESH_PEER_KERNEL:
3683 case CFG80211_STA_MESH_PEER_USER:
3684 /*
3685 * No ignoring the TDLS flag here -- the userspace mesh
3686 * code doesn't have the bug of including TDLS in the
3687 * mask everywhere.
3688 */
3689 if (params->sta_flags_mask &
3690 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3691 BIT(NL80211_STA_FLAG_MFP) |
3692 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3693 return -EINVAL;
3694 break;
3695 case CFG80211_STA_TDLS_PEER_SETUP:
3696 case CFG80211_STA_TDLS_PEER_ACTIVE:
3697 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3698 return -EINVAL;
3699 /* ignore since it can't change */
3700 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3701 break;
3702 default:
3703 /* disallow mesh-specific things */
3704 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3705 return -EINVAL;
3706 if (params->local_pm)
3707 return -EINVAL;
3708 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3709 return -EINVAL;
3710 }
3711
3712 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3713 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3714 /* TDLS can't be set, ... */
3715 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3716 return -EINVAL;
3717 /*
3718 * ... but don't bother the driver with it. This works around
3719 * a hostapd/wpa_supplicant issue -- it always includes the
3720 * TLDS_PEER flag in the mask even for AP mode.
3721 */
3722 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3723 }
3724
3725 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3726 /* reject other things that can't change */
3727 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3728 return -EINVAL;
3729 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3730 return -EINVAL;
3731 if (params->supported_rates)
3732 return -EINVAL;
3733 if (params->ext_capab || params->ht_capa || params->vht_capa)
3734 return -EINVAL;
3735 }
3736
3737 if (statype != CFG80211_STA_AP_CLIENT) {
3738 if (params->vlan)
3739 return -EINVAL;
3740 }
3741
3742 switch (statype) {
3743 case CFG80211_STA_AP_MLME_CLIENT:
3744 /* Use this only for authorizing/unauthorizing a station */
3745 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3746 return -EOPNOTSUPP;
3747 break;
3748 case CFG80211_STA_AP_CLIENT:
3749 /* accept only the listed bits */
3750 if (params->sta_flags_mask &
3751 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3752 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3753 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3754 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3755 BIT(NL80211_STA_FLAG_WME) |
3756 BIT(NL80211_STA_FLAG_MFP)))
3757 return -EINVAL;
3758
3759 /* but authenticated/associated only if driver handles it */
3760 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3761 params->sta_flags_mask &
3762 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3763 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3764 return -EINVAL;
3765 break;
3766 case CFG80211_STA_IBSS:
3767 case CFG80211_STA_AP_STA:
3768 /* reject any changes other than AUTHORIZED */
3769 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3770 return -EINVAL;
3771 break;
3772 case CFG80211_STA_TDLS_PEER_SETUP:
3773 /* reject any changes other than AUTHORIZED or WME */
3774 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3775 BIT(NL80211_STA_FLAG_WME)))
3776 return -EINVAL;
3777 /* force (at least) rates when authorizing */
3778 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3779 !params->supported_rates)
3780 return -EINVAL;
3781 break;
3782 case CFG80211_STA_TDLS_PEER_ACTIVE:
3783 /* reject any changes */
3784 return -EINVAL;
3785 case CFG80211_STA_MESH_PEER_KERNEL:
3786 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3787 return -EINVAL;
3788 break;
3789 case CFG80211_STA_MESH_PEER_USER:
3790 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3791 return -EINVAL;
3792 break;
3793 }
3794
3795 return 0;
3796 }
3797 EXPORT_SYMBOL(cfg80211_check_station_change);
3798
3799 /*
3800 * Get vlan interface making sure it is running and on the right wiphy.
3801 */
3802 static struct net_device *get_vlan(struct genl_info *info,
3803 struct cfg80211_registered_device *rdev)
3804 {
3805 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3806 struct net_device *v;
3807 int ret;
3808
3809 if (!vlanattr)
3810 return NULL;
3811
3812 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3813 if (!v)
3814 return ERR_PTR(-ENODEV);
3815
3816 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3817 ret = -EINVAL;
3818 goto error;
3819 }
3820
3821 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3822 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3823 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3824 ret = -EINVAL;
3825 goto error;
3826 }
3827
3828 if (!netif_running(v)) {
3829 ret = -ENETDOWN;
3830 goto error;
3831 }
3832
3833 return v;
3834 error:
3835 dev_put(v);
3836 return ERR_PTR(ret);
3837 }
3838
3839 static struct nla_policy
3840 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3841 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3842 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3843 };
3844
3845 static int nl80211_parse_sta_wme(struct genl_info *info,
3846 struct station_parameters *params)
3847 {
3848 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3849 struct nlattr *nla;
3850 int err;
3851
3852 /* parse WME attributes if present */
3853 if (!info->attrs[NL80211_ATTR_STA_WME])
3854 return 0;
3855
3856 nla = info->attrs[NL80211_ATTR_STA_WME];
3857 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3858 nl80211_sta_wme_policy);
3859 if (err)
3860 return err;
3861
3862 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3863 params->uapsd_queues = nla_get_u8(
3864 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3865 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3866 return -EINVAL;
3867
3868 if (tb[NL80211_STA_WME_MAX_SP])
3869 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3870
3871 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3872 return -EINVAL;
3873
3874 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3875
3876 return 0;
3877 }
3878
3879 static int nl80211_set_station_tdls(struct genl_info *info,
3880 struct station_parameters *params)
3881 {
3882 /* Dummy STA entry gets updated once the peer capabilities are known */
3883 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3884 params->ht_capa =
3885 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3886 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3887 params->vht_capa =
3888 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3889
3890 return nl80211_parse_sta_wme(info, params);
3891 }
3892
3893 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3894 {
3895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3896 struct net_device *dev = info->user_ptr[1];
3897 struct station_parameters params;
3898 u8 *mac_addr;
3899 int err;
3900
3901 memset(&params, 0, sizeof(params));
3902
3903 params.listen_interval = -1;
3904
3905 if (!rdev->ops->change_station)
3906 return -EOPNOTSUPP;
3907
3908 if (info->attrs[NL80211_ATTR_STA_AID])
3909 return -EINVAL;
3910
3911 if (!info->attrs[NL80211_ATTR_MAC])
3912 return -EINVAL;
3913
3914 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3915
3916 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3917 params.supported_rates =
3918 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3919 params.supported_rates_len =
3920 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3921 }
3922
3923 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3924 params.capability =
3925 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3926 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3927 }
3928
3929 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3930 params.ext_capab =
3931 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3932 params.ext_capab_len =
3933 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3934 }
3935
3936 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3937 return -EINVAL;
3938
3939 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3940 return -EINVAL;
3941
3942 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3943 params.plink_action =
3944 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3945 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3946 return -EINVAL;
3947 }
3948
3949 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3950 params.plink_state =
3951 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3952 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3953 return -EINVAL;
3954 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3955 }
3956
3957 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3958 enum nl80211_mesh_power_mode pm = nla_get_u32(
3959 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3960
3961 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3962 pm > NL80211_MESH_POWER_MAX)
3963 return -EINVAL;
3964
3965 params.local_pm = pm;
3966 }
3967
3968 /* Include parameters for TDLS peer (will check later) */
3969 err = nl80211_set_station_tdls(info, &params);
3970 if (err)
3971 return err;
3972
3973 params.vlan = get_vlan(info, rdev);
3974 if (IS_ERR(params.vlan))
3975 return PTR_ERR(params.vlan);
3976
3977 switch (dev->ieee80211_ptr->iftype) {
3978 case NL80211_IFTYPE_AP:
3979 case NL80211_IFTYPE_AP_VLAN:
3980 case NL80211_IFTYPE_P2P_GO:
3981 case NL80211_IFTYPE_P2P_CLIENT:
3982 case NL80211_IFTYPE_STATION:
3983 case NL80211_IFTYPE_ADHOC:
3984 case NL80211_IFTYPE_MESH_POINT:
3985 break;
3986 default:
3987 err = -EOPNOTSUPP;
3988 goto out_put_vlan;
3989 }
3990
3991 /* driver will call cfg80211_check_station_change() */
3992 err = rdev_change_station(rdev, dev, mac_addr, &params);
3993
3994 out_put_vlan:
3995 if (params.vlan)
3996 dev_put(params.vlan);
3997
3998 return err;
3999 }
4000
4001 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4002 {
4003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4004 int err;
4005 struct net_device *dev = info->user_ptr[1];
4006 struct station_parameters params;
4007 u8 *mac_addr = NULL;
4008
4009 memset(&params, 0, sizeof(params));
4010
4011 if (!rdev->ops->add_station)
4012 return -EOPNOTSUPP;
4013
4014 if (!info->attrs[NL80211_ATTR_MAC])
4015 return -EINVAL;
4016
4017 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4018 return -EINVAL;
4019
4020 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4021 return -EINVAL;
4022
4023 if (!info->attrs[NL80211_ATTR_STA_AID])
4024 return -EINVAL;
4025
4026 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4027 params.supported_rates =
4028 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4029 params.supported_rates_len =
4030 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4031 params.listen_interval =
4032 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4033
4034 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4035 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4036 return -EINVAL;
4037
4038 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4039 params.capability =
4040 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4041 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4042 }
4043
4044 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4045 params.ext_capab =
4046 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4047 params.ext_capab_len =
4048 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4049 }
4050
4051 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4052 params.ht_capa =
4053 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4054
4055 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4056 params.vht_capa =
4057 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4058
4059 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4060 params.plink_action =
4061 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4062 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4063 return -EINVAL;
4064 }
4065
4066 err = nl80211_parse_sta_wme(info, &params);
4067 if (err)
4068 return err;
4069
4070 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4071 return -EINVAL;
4072
4073 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4074 * as userspace might just pass through the capabilities from the IEs
4075 * directly, rather than enforcing this restriction and returning an
4076 * error in this case.
4077 */
4078 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4079 params.ht_capa = NULL;
4080 params.vht_capa = NULL;
4081 }
4082
4083 /* When you run into this, adjust the code below for the new flag */
4084 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4085
4086 switch (dev->ieee80211_ptr->iftype) {
4087 case NL80211_IFTYPE_AP:
4088 case NL80211_IFTYPE_AP_VLAN:
4089 case NL80211_IFTYPE_P2P_GO:
4090 /* ignore WME attributes if iface/sta is not capable */
4091 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4092 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4093 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4094
4095 /* TDLS peers cannot be added */
4096 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4097 return -EINVAL;
4098 /* but don't bother the driver with it */
4099 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4100
4101 /* allow authenticated/associated only if driver handles it */
4102 if (!(rdev->wiphy.features &
4103 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4104 params.sta_flags_mask &
4105 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4106 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4107 return -EINVAL;
4108
4109 /* must be last in here for error handling */
4110 params.vlan = get_vlan(info, rdev);
4111 if (IS_ERR(params.vlan))
4112 return PTR_ERR(params.vlan);
4113 break;
4114 case NL80211_IFTYPE_MESH_POINT:
4115 /* ignore uAPSD data */
4116 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4117
4118 /* associated is disallowed */
4119 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4120 return -EINVAL;
4121 /* TDLS peers cannot be added */
4122 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4123 return -EINVAL;
4124 break;
4125 case NL80211_IFTYPE_STATION:
4126 case NL80211_IFTYPE_P2P_CLIENT:
4127 /* ignore uAPSD data */
4128 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4129
4130 /* these are disallowed */
4131 if (params.sta_flags_mask &
4132 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4133 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4134 return -EINVAL;
4135 /* Only TDLS peers can be added */
4136 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4137 return -EINVAL;
4138 /* Can only add if TDLS ... */
4139 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4140 return -EOPNOTSUPP;
4141 /* ... with external setup is supported */
4142 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4143 return -EOPNOTSUPP;
4144 /*
4145 * Older wpa_supplicant versions always mark the TDLS peer
4146 * as authorized, but it shouldn't yet be.
4147 */
4148 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4149 break;
4150 default:
4151 return -EOPNOTSUPP;
4152 }
4153
4154 /* be aware of params.vlan when changing code here */
4155
4156 err = rdev_add_station(rdev, dev, mac_addr, &params);
4157
4158 if (params.vlan)
4159 dev_put(params.vlan);
4160 return err;
4161 }
4162
4163 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4164 {
4165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4166 struct net_device *dev = info->user_ptr[1];
4167 u8 *mac_addr = NULL;
4168
4169 if (info->attrs[NL80211_ATTR_MAC])
4170 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4171
4172 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4173 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4174 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4175 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4176 return -EINVAL;
4177
4178 if (!rdev->ops->del_station)
4179 return -EOPNOTSUPP;
4180
4181 return rdev_del_station(rdev, dev, mac_addr);
4182 }
4183
4184 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4185 int flags, struct net_device *dev,
4186 u8 *dst, u8 *next_hop,
4187 struct mpath_info *pinfo)
4188 {
4189 void *hdr;
4190 struct nlattr *pinfoattr;
4191
4192 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4193 if (!hdr)
4194 return -1;
4195
4196 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4197 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4198 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4199 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4200 goto nla_put_failure;
4201
4202 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4203 if (!pinfoattr)
4204 goto nla_put_failure;
4205 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4206 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4207 pinfo->frame_qlen))
4208 goto nla_put_failure;
4209 if (((pinfo->filled & MPATH_INFO_SN) &&
4210 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4211 ((pinfo->filled & MPATH_INFO_METRIC) &&
4212 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4213 pinfo->metric)) ||
4214 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4215 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4216 pinfo->exptime)) ||
4217 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4218 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4219 pinfo->flags)) ||
4220 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4221 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4222 pinfo->discovery_timeout)) ||
4223 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4224 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4225 pinfo->discovery_retries)))
4226 goto nla_put_failure;
4227
4228 nla_nest_end(msg, pinfoattr);
4229
4230 return genlmsg_end(msg, hdr);
4231
4232 nla_put_failure:
4233 genlmsg_cancel(msg, hdr);
4234 return -EMSGSIZE;
4235 }
4236
4237 static int nl80211_dump_mpath(struct sk_buff *skb,
4238 struct netlink_callback *cb)
4239 {
4240 struct mpath_info pinfo;
4241 struct cfg80211_registered_device *dev;
4242 struct wireless_dev *wdev;
4243 u8 dst[ETH_ALEN];
4244 u8 next_hop[ETH_ALEN];
4245 int path_idx = cb->args[2];
4246 int err;
4247
4248 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4249 if (err)
4250 return err;
4251
4252 if (!dev->ops->dump_mpath) {
4253 err = -EOPNOTSUPP;
4254 goto out_err;
4255 }
4256
4257 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4258 err = -EOPNOTSUPP;
4259 goto out_err;
4260 }
4261
4262 while (1) {
4263 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4264 next_hop, &pinfo);
4265 if (err == -ENOENT)
4266 break;
4267 if (err)
4268 goto out_err;
4269
4270 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4271 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4272 wdev->netdev, dst, next_hop,
4273 &pinfo) < 0)
4274 goto out;
4275
4276 path_idx++;
4277 }
4278
4279
4280 out:
4281 cb->args[2] = path_idx;
4282 err = skb->len;
4283 out_err:
4284 nl80211_finish_wdev_dump(dev);
4285 return err;
4286 }
4287
4288 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4289 {
4290 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4291 int err;
4292 struct net_device *dev = info->user_ptr[1];
4293 struct mpath_info pinfo;
4294 struct sk_buff *msg;
4295 u8 *dst = NULL;
4296 u8 next_hop[ETH_ALEN];
4297
4298 memset(&pinfo, 0, sizeof(pinfo));
4299
4300 if (!info->attrs[NL80211_ATTR_MAC])
4301 return -EINVAL;
4302
4303 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4304
4305 if (!rdev->ops->get_mpath)
4306 return -EOPNOTSUPP;
4307
4308 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4309 return -EOPNOTSUPP;
4310
4311 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4312 if (err)
4313 return err;
4314
4315 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4316 if (!msg)
4317 return -ENOMEM;
4318
4319 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4320 dev, dst, next_hop, &pinfo) < 0) {
4321 nlmsg_free(msg);
4322 return -ENOBUFS;
4323 }
4324
4325 return genlmsg_reply(msg, info);
4326 }
4327
4328 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4329 {
4330 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4331 struct net_device *dev = info->user_ptr[1];
4332 u8 *dst = NULL;
4333 u8 *next_hop = NULL;
4334
4335 if (!info->attrs[NL80211_ATTR_MAC])
4336 return -EINVAL;
4337
4338 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4339 return -EINVAL;
4340
4341 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4342 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4343
4344 if (!rdev->ops->change_mpath)
4345 return -EOPNOTSUPP;
4346
4347 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4348 return -EOPNOTSUPP;
4349
4350 return rdev_change_mpath(rdev, dev, dst, next_hop);
4351 }
4352
4353 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4354 {
4355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4356 struct net_device *dev = info->user_ptr[1];
4357 u8 *dst = NULL;
4358 u8 *next_hop = NULL;
4359
4360 if (!info->attrs[NL80211_ATTR_MAC])
4361 return -EINVAL;
4362
4363 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4364 return -EINVAL;
4365
4366 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4367 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4368
4369 if (!rdev->ops->add_mpath)
4370 return -EOPNOTSUPP;
4371
4372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4373 return -EOPNOTSUPP;
4374
4375 return rdev_add_mpath(rdev, dev, dst, next_hop);
4376 }
4377
4378 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4379 {
4380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4381 struct net_device *dev = info->user_ptr[1];
4382 u8 *dst = NULL;
4383
4384 if (info->attrs[NL80211_ATTR_MAC])
4385 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4386
4387 if (!rdev->ops->del_mpath)
4388 return -EOPNOTSUPP;
4389
4390 return rdev_del_mpath(rdev, dev, dst);
4391 }
4392
4393 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4394 {
4395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4396 struct net_device *dev = info->user_ptr[1];
4397 struct bss_parameters params;
4398
4399 memset(&params, 0, sizeof(params));
4400 /* default to not changing parameters */
4401 params.use_cts_prot = -1;
4402 params.use_short_preamble = -1;
4403 params.use_short_slot_time = -1;
4404 params.ap_isolate = -1;
4405 params.ht_opmode = -1;
4406 params.p2p_ctwindow = -1;
4407 params.p2p_opp_ps = -1;
4408
4409 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4410 params.use_cts_prot =
4411 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4412 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4413 params.use_short_preamble =
4414 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4415 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4416 params.use_short_slot_time =
4417 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4418 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4419 params.basic_rates =
4420 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4421 params.basic_rates_len =
4422 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4423 }
4424 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4425 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4426 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4427 params.ht_opmode =
4428 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4429
4430 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4431 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4432 return -EINVAL;
4433 params.p2p_ctwindow =
4434 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4435 if (params.p2p_ctwindow < 0)
4436 return -EINVAL;
4437 if (params.p2p_ctwindow != 0 &&
4438 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4439 return -EINVAL;
4440 }
4441
4442 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4443 u8 tmp;
4444
4445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4446 return -EINVAL;
4447 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4448 if (tmp > 1)
4449 return -EINVAL;
4450 params.p2p_opp_ps = tmp;
4451 if (params.p2p_opp_ps &&
4452 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4453 return -EINVAL;
4454 }
4455
4456 if (!rdev->ops->change_bss)
4457 return -EOPNOTSUPP;
4458
4459 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4460 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4461 return -EOPNOTSUPP;
4462
4463 return rdev_change_bss(rdev, dev, &params);
4464 }
4465
4466 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4467 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4468 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4469 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4470 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4471 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4472 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4473 };
4474
4475 static int parse_reg_rule(struct nlattr *tb[],
4476 struct ieee80211_reg_rule *reg_rule)
4477 {
4478 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4479 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4480
4481 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4482 return -EINVAL;
4483 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4484 return -EINVAL;
4485 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4486 return -EINVAL;
4487 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4488 return -EINVAL;
4489 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4490 return -EINVAL;
4491
4492 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4493
4494 freq_range->start_freq_khz =
4495 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4496 freq_range->end_freq_khz =
4497 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4498 freq_range->max_bandwidth_khz =
4499 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4500
4501 power_rule->max_eirp =
4502 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4503
4504 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4505 power_rule->max_antenna_gain =
4506 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4507
4508 return 0;
4509 }
4510
4511 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4512 {
4513 int r;
4514 char *data = NULL;
4515 enum nl80211_user_reg_hint_type user_reg_hint_type;
4516
4517 /*
4518 * You should only get this when cfg80211 hasn't yet initialized
4519 * completely when built-in to the kernel right between the time
4520 * window between nl80211_init() and regulatory_init(), if that is
4521 * even possible.
4522 */
4523 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4524 return -EINPROGRESS;
4525
4526 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4527 return -EINVAL;
4528
4529 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4530
4531 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4532 user_reg_hint_type =
4533 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4534 else
4535 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4536
4537 switch (user_reg_hint_type) {
4538 case NL80211_USER_REG_HINT_USER:
4539 case NL80211_USER_REG_HINT_CELL_BASE:
4540 break;
4541 default:
4542 return -EINVAL;
4543 }
4544
4545 r = regulatory_hint_user(data, user_reg_hint_type);
4546
4547 return r;
4548 }
4549
4550 static int nl80211_get_mesh_config(struct sk_buff *skb,
4551 struct genl_info *info)
4552 {
4553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4554 struct net_device *dev = info->user_ptr[1];
4555 struct wireless_dev *wdev = dev->ieee80211_ptr;
4556 struct mesh_config cur_params;
4557 int err = 0;
4558 void *hdr;
4559 struct nlattr *pinfoattr;
4560 struct sk_buff *msg;
4561
4562 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4563 return -EOPNOTSUPP;
4564
4565 if (!rdev->ops->get_mesh_config)
4566 return -EOPNOTSUPP;
4567
4568 wdev_lock(wdev);
4569 /* If not connected, get default parameters */
4570 if (!wdev->mesh_id_len)
4571 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4572 else
4573 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4574 wdev_unlock(wdev);
4575
4576 if (err)
4577 return err;
4578
4579 /* Draw up a netlink message to send back */
4580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4581 if (!msg)
4582 return -ENOMEM;
4583 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4584 NL80211_CMD_GET_MESH_CONFIG);
4585 if (!hdr)
4586 goto out;
4587 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4588 if (!pinfoattr)
4589 goto nla_put_failure;
4590 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4591 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4592 cur_params.dot11MeshRetryTimeout) ||
4593 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4594 cur_params.dot11MeshConfirmTimeout) ||
4595 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4596 cur_params.dot11MeshHoldingTimeout) ||
4597 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4598 cur_params.dot11MeshMaxPeerLinks) ||
4599 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4600 cur_params.dot11MeshMaxRetries) ||
4601 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4602 cur_params.dot11MeshTTL) ||
4603 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4604 cur_params.element_ttl) ||
4605 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4606 cur_params.auto_open_plinks) ||
4607 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4608 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4609 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4610 cur_params.dot11MeshHWMPmaxPREQretries) ||
4611 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4612 cur_params.path_refresh_time) ||
4613 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4614 cur_params.min_discovery_timeout) ||
4615 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4616 cur_params.dot11MeshHWMPactivePathTimeout) ||
4617 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4618 cur_params.dot11MeshHWMPpreqMinInterval) ||
4619 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4620 cur_params.dot11MeshHWMPperrMinInterval) ||
4621 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4622 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4623 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4624 cur_params.dot11MeshHWMPRootMode) ||
4625 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4626 cur_params.dot11MeshHWMPRannInterval) ||
4627 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4628 cur_params.dot11MeshGateAnnouncementProtocol) ||
4629 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4630 cur_params.dot11MeshForwarding) ||
4631 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4632 cur_params.rssi_threshold) ||
4633 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4634 cur_params.ht_opmode) ||
4635 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4636 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4637 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4638 cur_params.dot11MeshHWMProotInterval) ||
4639 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4640 cur_params.dot11MeshHWMPconfirmationInterval) ||
4641 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4642 cur_params.power_mode) ||
4643 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4644 cur_params.dot11MeshAwakeWindowDuration))
4645 goto nla_put_failure;
4646 nla_nest_end(msg, pinfoattr);
4647 genlmsg_end(msg, hdr);
4648 return genlmsg_reply(msg, info);
4649
4650 nla_put_failure:
4651 genlmsg_cancel(msg, hdr);
4652 out:
4653 nlmsg_free(msg);
4654 return -ENOBUFS;
4655 }
4656
4657 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4658 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4659 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4660 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4661 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4662 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4663 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4664 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4665 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4666 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4667 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4668 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4669 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4670 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4671 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4672 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4673 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4674 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4675 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4676 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4677 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4678 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4679 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4680 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4681 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4682 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4683 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4684 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4685 };
4686
4687 static const struct nla_policy
4688 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4689 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4690 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4691 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4692 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4693 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4694 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4695 .len = IEEE80211_MAX_DATA_LEN },
4696 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4697 };
4698
4699 static int nl80211_parse_mesh_config(struct genl_info *info,
4700 struct mesh_config *cfg,
4701 u32 *mask_out)
4702 {
4703 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4704 u32 mask = 0;
4705
4706 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4707 do { \
4708 if (tb[attr]) { \
4709 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4710 return -EINVAL; \
4711 cfg->param = fn(tb[attr]); \
4712 mask |= (1 << (attr - 1)); \
4713 } \
4714 } while (0)
4715
4716
4717 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4718 return -EINVAL;
4719 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4720 info->attrs[NL80211_ATTR_MESH_CONFIG],
4721 nl80211_meshconf_params_policy))
4722 return -EINVAL;
4723
4724 /* This makes sure that there aren't more than 32 mesh config
4725 * parameters (otherwise our bitfield scheme would not work.) */
4726 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4727
4728 /* Fill in the params struct */
4729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4730 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4731 nla_get_u16);
4732 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4733 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4734 nla_get_u16);
4735 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4736 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4737 nla_get_u16);
4738 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4739 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4740 nla_get_u16);
4741 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4742 mask, NL80211_MESHCONF_MAX_RETRIES,
4743 nla_get_u8);
4744 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4745 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4746 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4747 mask, NL80211_MESHCONF_ELEMENT_TTL,
4748 nla_get_u8);
4749 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4750 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4751 nla_get_u8);
4752 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4753 1, 255, mask,
4754 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4755 nla_get_u32);
4756 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4757 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4758 nla_get_u8);
4759 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4760 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4761 nla_get_u32);
4762 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4763 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4764 nla_get_u16);
4765 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4766 1, 65535, mask,
4767 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4768 nla_get_u32);
4769 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4770 1, 65535, mask,
4771 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4772 nla_get_u16);
4773 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4774 1, 65535, mask,
4775 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4776 nla_get_u16);
4777 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4778 dot11MeshHWMPnetDiameterTraversalTime,
4779 1, 65535, mask,
4780 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4781 nla_get_u16);
4782 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4783 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4784 nla_get_u8);
4785 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4786 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4787 nla_get_u16);
4788 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4789 dot11MeshGateAnnouncementProtocol, 0, 1,
4790 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4791 nla_get_u8);
4792 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4793 mask, NL80211_MESHCONF_FORWARDING,
4794 nla_get_u8);
4795 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4796 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4797 nla_get_u32);
4798 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4799 mask, NL80211_MESHCONF_HT_OPMODE,
4800 nla_get_u16);
4801 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4802 1, 65535, mask,
4803 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4804 nla_get_u32);
4805 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4806 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4807 nla_get_u16);
4808 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4809 dot11MeshHWMPconfirmationInterval,
4810 1, 65535, mask,
4811 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4812 nla_get_u16);
4813 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4814 NL80211_MESH_POWER_ACTIVE,
4815 NL80211_MESH_POWER_MAX,
4816 mask, NL80211_MESHCONF_POWER_MODE,
4817 nla_get_u32);
4818 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4819 0, 65535, mask,
4820 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4821 if (mask_out)
4822 *mask_out = mask;
4823
4824 return 0;
4825
4826 #undef FILL_IN_MESH_PARAM_IF_SET
4827 }
4828
4829 static int nl80211_parse_mesh_setup(struct genl_info *info,
4830 struct mesh_setup *setup)
4831 {
4832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4833 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4834
4835 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4836 return -EINVAL;
4837 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4838 info->attrs[NL80211_ATTR_MESH_SETUP],
4839 nl80211_mesh_setup_params_policy))
4840 return -EINVAL;
4841
4842 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4843 setup->sync_method =
4844 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4845 IEEE80211_SYNC_METHOD_VENDOR :
4846 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4847
4848 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4849 setup->path_sel_proto =
4850 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4851 IEEE80211_PATH_PROTOCOL_VENDOR :
4852 IEEE80211_PATH_PROTOCOL_HWMP;
4853
4854 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4855 setup->path_metric =
4856 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4857 IEEE80211_PATH_METRIC_VENDOR :
4858 IEEE80211_PATH_METRIC_AIRTIME;
4859
4860
4861 if (tb[NL80211_MESH_SETUP_IE]) {
4862 struct nlattr *ieattr =
4863 tb[NL80211_MESH_SETUP_IE];
4864 if (!is_valid_ie_attr(ieattr))
4865 return -EINVAL;
4866 setup->ie = nla_data(ieattr);
4867 setup->ie_len = nla_len(ieattr);
4868 }
4869 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4870 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4871 return -EINVAL;
4872 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4873 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4874 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4875 if (setup->is_secure)
4876 setup->user_mpm = true;
4877
4878 return 0;
4879 }
4880
4881 static int nl80211_update_mesh_config(struct sk_buff *skb,
4882 struct genl_info *info)
4883 {
4884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4885 struct net_device *dev = info->user_ptr[1];
4886 struct wireless_dev *wdev = dev->ieee80211_ptr;
4887 struct mesh_config cfg;
4888 u32 mask;
4889 int err;
4890
4891 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4892 return -EOPNOTSUPP;
4893
4894 if (!rdev->ops->update_mesh_config)
4895 return -EOPNOTSUPP;
4896
4897 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4898 if (err)
4899 return err;
4900
4901 wdev_lock(wdev);
4902 if (!wdev->mesh_id_len)
4903 err = -ENOLINK;
4904
4905 if (!err)
4906 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4907
4908 wdev_unlock(wdev);
4909
4910 return err;
4911 }
4912
4913 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4914 {
4915 const struct ieee80211_regdomain *regdom;
4916 struct sk_buff *msg;
4917 void *hdr = NULL;
4918 struct nlattr *nl_reg_rules;
4919 unsigned int i;
4920 int err = -EINVAL;
4921
4922 mutex_lock(&cfg80211_mutex);
4923
4924 if (!cfg80211_regdomain)
4925 goto out;
4926
4927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4928 if (!msg) {
4929 err = -ENOBUFS;
4930 goto out;
4931 }
4932
4933 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4934 NL80211_CMD_GET_REG);
4935 if (!hdr)
4936 goto put_failure;
4937
4938 if (reg_last_request_cell_base() &&
4939 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4940 NL80211_USER_REG_HINT_CELL_BASE))
4941 goto nla_put_failure;
4942
4943 rcu_read_lock();
4944 regdom = rcu_dereference(cfg80211_regdomain);
4945
4946 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4947 (regdom->dfs_region &&
4948 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4949 goto nla_put_failure_rcu;
4950
4951 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4952 if (!nl_reg_rules)
4953 goto nla_put_failure_rcu;
4954
4955 for (i = 0; i < regdom->n_reg_rules; i++) {
4956 struct nlattr *nl_reg_rule;
4957 const struct ieee80211_reg_rule *reg_rule;
4958 const struct ieee80211_freq_range *freq_range;
4959 const struct ieee80211_power_rule *power_rule;
4960
4961 reg_rule = &regdom->reg_rules[i];
4962 freq_range = &reg_rule->freq_range;
4963 power_rule = &reg_rule->power_rule;
4964
4965 nl_reg_rule = nla_nest_start(msg, i);
4966 if (!nl_reg_rule)
4967 goto nla_put_failure_rcu;
4968
4969 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4970 reg_rule->flags) ||
4971 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4972 freq_range->start_freq_khz) ||
4973 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4974 freq_range->end_freq_khz) ||
4975 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4976 freq_range->max_bandwidth_khz) ||
4977 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4978 power_rule->max_antenna_gain) ||
4979 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4980 power_rule->max_eirp))
4981 goto nla_put_failure_rcu;
4982
4983 nla_nest_end(msg, nl_reg_rule);
4984 }
4985 rcu_read_unlock();
4986
4987 nla_nest_end(msg, nl_reg_rules);
4988
4989 genlmsg_end(msg, hdr);
4990 err = genlmsg_reply(msg, info);
4991 goto out;
4992
4993 nla_put_failure_rcu:
4994 rcu_read_unlock();
4995 nla_put_failure:
4996 genlmsg_cancel(msg, hdr);
4997 put_failure:
4998 nlmsg_free(msg);
4999 err = -EMSGSIZE;
5000 out:
5001 mutex_unlock(&cfg80211_mutex);
5002 return err;
5003 }
5004
5005 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5006 {
5007 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5008 struct nlattr *nl_reg_rule;
5009 char *alpha2 = NULL;
5010 int rem_reg_rules = 0, r = 0;
5011 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5012 u8 dfs_region = 0;
5013 struct ieee80211_regdomain *rd = NULL;
5014
5015 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5016 return -EINVAL;
5017
5018 if (!info->attrs[NL80211_ATTR_REG_RULES])
5019 return -EINVAL;
5020
5021 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5022
5023 if (info->attrs[NL80211_ATTR_DFS_REGION])
5024 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5025
5026 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5027 rem_reg_rules) {
5028 num_rules++;
5029 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5030 return -EINVAL;
5031 }
5032
5033 size_of_regd = sizeof(struct ieee80211_regdomain) +
5034 num_rules * sizeof(struct ieee80211_reg_rule);
5035
5036 rd = kzalloc(size_of_regd, GFP_KERNEL);
5037 if (!rd)
5038 return -ENOMEM;
5039
5040 rd->n_reg_rules = num_rules;
5041 rd->alpha2[0] = alpha2[0];
5042 rd->alpha2[1] = alpha2[1];
5043
5044 /*
5045 * Disable DFS master mode if the DFS region was
5046 * not supported or known on this kernel.
5047 */
5048 if (reg_supported_dfs_region(dfs_region))
5049 rd->dfs_region = dfs_region;
5050
5051 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5052 rem_reg_rules) {
5053 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5054 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5055 reg_rule_policy);
5056 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5057 if (r)
5058 goto bad_reg;
5059
5060 rule_idx++;
5061
5062 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5063 r = -EINVAL;
5064 goto bad_reg;
5065 }
5066 }
5067
5068 mutex_lock(&cfg80211_mutex);
5069
5070 r = set_regdom(rd);
5071 /* set_regdom took ownership */
5072 rd = NULL;
5073 mutex_unlock(&cfg80211_mutex);
5074
5075 bad_reg:
5076 kfree(rd);
5077 return r;
5078 }
5079
5080 static int validate_scan_freqs(struct nlattr *freqs)
5081 {
5082 struct nlattr *attr1, *attr2;
5083 int n_channels = 0, tmp1, tmp2;
5084
5085 nla_for_each_nested(attr1, freqs, tmp1)
5086 if (nla_len(attr1) != sizeof(u32))
5087 return 0;
5088
5089 nla_for_each_nested(attr1, freqs, tmp1) {
5090 n_channels++;
5091 /*
5092 * Some hardware has a limited channel list for
5093 * scanning, and it is pretty much nonsensical
5094 * to scan for a channel twice, so disallow that
5095 * and don't require drivers to check that the
5096 * channel list they get isn't longer than what
5097 * they can scan, as long as they can scan all
5098 * the channels they registered at once.
5099 */
5100 nla_for_each_nested(attr2, freqs, tmp2)
5101 if (attr1 != attr2 &&
5102 nla_get_u32(attr1) == nla_get_u32(attr2))
5103 return 0;
5104 }
5105
5106 return n_channels;
5107 }
5108
5109 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5110 {
5111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5112 struct wireless_dev *wdev = info->user_ptr[1];
5113 struct cfg80211_scan_request *request;
5114 struct nlattr *attr;
5115 struct wiphy *wiphy;
5116 int err, tmp, n_ssids = 0, n_channels, i;
5117 size_t ie_len;
5118
5119 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5120 return -EINVAL;
5121
5122 wiphy = &rdev->wiphy;
5123
5124 if (!rdev->ops->scan)
5125 return -EOPNOTSUPP;
5126
5127 mutex_lock(&rdev->sched_scan_mtx);
5128 if (rdev->scan_req) {
5129 err = -EBUSY;
5130 goto unlock;
5131 }
5132
5133 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5134 n_channels = validate_scan_freqs(
5135 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5136 if (!n_channels) {
5137 err = -EINVAL;
5138 goto unlock;
5139 }
5140 } else {
5141 enum ieee80211_band band;
5142 n_channels = 0;
5143
5144 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5145 if (wiphy->bands[band])
5146 n_channels += wiphy->bands[band]->n_channels;
5147 }
5148
5149 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5150 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5151 n_ssids++;
5152
5153 if (n_ssids > wiphy->max_scan_ssids) {
5154 err = -EINVAL;
5155 goto unlock;
5156 }
5157
5158 if (info->attrs[NL80211_ATTR_IE])
5159 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5160 else
5161 ie_len = 0;
5162
5163 if (ie_len > wiphy->max_scan_ie_len) {
5164 err = -EINVAL;
5165 goto unlock;
5166 }
5167
5168 request = kzalloc(sizeof(*request)
5169 + sizeof(*request->ssids) * n_ssids
5170 + sizeof(*request->channels) * n_channels
5171 + ie_len, GFP_KERNEL);
5172 if (!request) {
5173 err = -ENOMEM;
5174 goto unlock;
5175 }
5176
5177 if (n_ssids)
5178 request->ssids = (void *)&request->channels[n_channels];
5179 request->n_ssids = n_ssids;
5180 if (ie_len) {
5181 if (request->ssids)
5182 request->ie = (void *)(request->ssids + n_ssids);
5183 else
5184 request->ie = (void *)(request->channels + n_channels);
5185 }
5186
5187 i = 0;
5188 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5189 /* user specified, bail out if channel not found */
5190 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5191 struct ieee80211_channel *chan;
5192
5193 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5194
5195 if (!chan) {
5196 err = -EINVAL;
5197 goto out_free;
5198 }
5199
5200 /* ignore disabled channels */
5201 if (chan->flags & IEEE80211_CHAN_DISABLED)
5202 continue;
5203
5204 request->channels[i] = chan;
5205 i++;
5206 }
5207 } else {
5208 enum ieee80211_band band;
5209
5210 /* all channels */
5211 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5212 int j;
5213 if (!wiphy->bands[band])
5214 continue;
5215 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5216 struct ieee80211_channel *chan;
5217
5218 chan = &wiphy->bands[band]->channels[j];
5219
5220 if (chan->flags & IEEE80211_CHAN_DISABLED)
5221 continue;
5222
5223 request->channels[i] = chan;
5224 i++;
5225 }
5226 }
5227 }
5228
5229 if (!i) {
5230 err = -EINVAL;
5231 goto out_free;
5232 }
5233
5234 request->n_channels = i;
5235
5236 i = 0;
5237 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5238 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5239 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5240 err = -EINVAL;
5241 goto out_free;
5242 }
5243 request->ssids[i].ssid_len = nla_len(attr);
5244 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5245 i++;
5246 }
5247 }
5248
5249 if (info->attrs[NL80211_ATTR_IE]) {
5250 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5251 memcpy((void *)request->ie,
5252 nla_data(info->attrs[NL80211_ATTR_IE]),
5253 request->ie_len);
5254 }
5255
5256 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5257 if (wiphy->bands[i])
5258 request->rates[i] =
5259 (1 << wiphy->bands[i]->n_bitrates) - 1;
5260
5261 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5262 nla_for_each_nested(attr,
5263 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5264 tmp) {
5265 enum ieee80211_band band = nla_type(attr);
5266
5267 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5268 err = -EINVAL;
5269 goto out_free;
5270 }
5271 err = ieee80211_get_ratemask(wiphy->bands[band],
5272 nla_data(attr),
5273 nla_len(attr),
5274 &request->rates[band]);
5275 if (err)
5276 goto out_free;
5277 }
5278 }
5279
5280 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5281 request->flags = nla_get_u32(
5282 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5283 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5284 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5285 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5286 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5287 err = -EOPNOTSUPP;
5288 goto out_free;
5289 }
5290 }
5291
5292 request->no_cck =
5293 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5294
5295 request->wdev = wdev;
5296 request->wiphy = &rdev->wiphy;
5297 request->scan_start = jiffies;
5298
5299 rdev->scan_req = request;
5300 err = rdev_scan(rdev, request);
5301
5302 if (!err) {
5303 nl80211_send_scan_start(rdev, wdev);
5304 if (wdev->netdev)
5305 dev_hold(wdev->netdev);
5306 } else {
5307 out_free:
5308 rdev->scan_req = NULL;
5309 kfree(request);
5310 }
5311
5312 unlock:
5313 mutex_unlock(&rdev->sched_scan_mtx);
5314 return err;
5315 }
5316
5317 static int nl80211_start_sched_scan(struct sk_buff *skb,
5318 struct genl_info *info)
5319 {
5320 struct cfg80211_sched_scan_request *request;
5321 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5322 struct net_device *dev = info->user_ptr[1];
5323 struct nlattr *attr;
5324 struct wiphy *wiphy;
5325 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5326 u32 interval;
5327 enum ieee80211_band band;
5328 size_t ie_len;
5329 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5330
5331 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5332 !rdev->ops->sched_scan_start)
5333 return -EOPNOTSUPP;
5334
5335 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5336 return -EINVAL;
5337
5338 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5339 return -EINVAL;
5340
5341 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5342 if (interval == 0)
5343 return -EINVAL;
5344
5345 wiphy = &rdev->wiphy;
5346
5347 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5348 n_channels = validate_scan_freqs(
5349 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5350 if (!n_channels)
5351 return -EINVAL;
5352 } else {
5353 n_channels = 0;
5354
5355 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5356 if (wiphy->bands[band])
5357 n_channels += wiphy->bands[band]->n_channels;
5358 }
5359
5360 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5361 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5362 tmp)
5363 n_ssids++;
5364
5365 if (n_ssids > wiphy->max_sched_scan_ssids)
5366 return -EINVAL;
5367
5368 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5369 nla_for_each_nested(attr,
5370 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5371 tmp)
5372 n_match_sets++;
5373
5374 if (n_match_sets > wiphy->max_match_sets)
5375 return -EINVAL;
5376
5377 if (info->attrs[NL80211_ATTR_IE])
5378 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5379 else
5380 ie_len = 0;
5381
5382 if (ie_len > wiphy->max_sched_scan_ie_len)
5383 return -EINVAL;
5384
5385 mutex_lock(&rdev->sched_scan_mtx);
5386
5387 if (rdev->sched_scan_req) {
5388 err = -EINPROGRESS;
5389 goto out;
5390 }
5391
5392 request = kzalloc(sizeof(*request)
5393 + sizeof(*request->ssids) * n_ssids
5394 + sizeof(*request->match_sets) * n_match_sets
5395 + sizeof(*request->channels) * n_channels
5396 + ie_len, GFP_KERNEL);
5397 if (!request) {
5398 err = -ENOMEM;
5399 goto out;
5400 }
5401
5402 if (n_ssids)
5403 request->ssids = (void *)&request->channels[n_channels];
5404 request->n_ssids = n_ssids;
5405 if (ie_len) {
5406 if (request->ssids)
5407 request->ie = (void *)(request->ssids + n_ssids);
5408 else
5409 request->ie = (void *)(request->channels + n_channels);
5410 }
5411
5412 if (n_match_sets) {
5413 if (request->ie)
5414 request->match_sets = (void *)(request->ie + ie_len);
5415 else if (request->ssids)
5416 request->match_sets =
5417 (void *)(request->ssids + n_ssids);
5418 else
5419 request->match_sets =
5420 (void *)(request->channels + n_channels);
5421 }
5422 request->n_match_sets = n_match_sets;
5423
5424 i = 0;
5425 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5426 /* user specified, bail out if channel not found */
5427 nla_for_each_nested(attr,
5428 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5429 tmp) {
5430 struct ieee80211_channel *chan;
5431
5432 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5433
5434 if (!chan) {
5435 err = -EINVAL;
5436 goto out_free;
5437 }
5438
5439 /* ignore disabled channels */
5440 if (chan->flags & IEEE80211_CHAN_DISABLED)
5441 continue;
5442
5443 request->channels[i] = chan;
5444 i++;
5445 }
5446 } else {
5447 /* all channels */
5448 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5449 int j;
5450 if (!wiphy->bands[band])
5451 continue;
5452 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5453 struct ieee80211_channel *chan;
5454
5455 chan = &wiphy->bands[band]->channels[j];
5456
5457 if (chan->flags & IEEE80211_CHAN_DISABLED)
5458 continue;
5459
5460 request->channels[i] = chan;
5461 i++;
5462 }
5463 }
5464 }
5465
5466 if (!i) {
5467 err = -EINVAL;
5468 goto out_free;
5469 }
5470
5471 request->n_channels = i;
5472
5473 i = 0;
5474 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5475 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5476 tmp) {
5477 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5478 err = -EINVAL;
5479 goto out_free;
5480 }
5481 request->ssids[i].ssid_len = nla_len(attr);
5482 memcpy(request->ssids[i].ssid, nla_data(attr),
5483 nla_len(attr));
5484 i++;
5485 }
5486 }
5487
5488 i = 0;
5489 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5490 nla_for_each_nested(attr,
5491 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5492 tmp) {
5493 struct nlattr *ssid, *rssi;
5494
5495 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5496 nla_data(attr), nla_len(attr),
5497 nl80211_match_policy);
5498 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5499 if (ssid) {
5500 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5501 err = -EINVAL;
5502 goto out_free;
5503 }
5504 memcpy(request->match_sets[i].ssid.ssid,
5505 nla_data(ssid), nla_len(ssid));
5506 request->match_sets[i].ssid.ssid_len =
5507 nla_len(ssid);
5508 }
5509 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5510 if (rssi)
5511 request->rssi_thold = nla_get_u32(rssi);
5512 else
5513 request->rssi_thold =
5514 NL80211_SCAN_RSSI_THOLD_OFF;
5515 i++;
5516 }
5517 }
5518
5519 if (info->attrs[NL80211_ATTR_IE]) {
5520 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5521 memcpy((void *)request->ie,
5522 nla_data(info->attrs[NL80211_ATTR_IE]),
5523 request->ie_len);
5524 }
5525
5526 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5527 request->flags = nla_get_u32(
5528 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5529 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5530 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5531 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5532 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5533 err = -EOPNOTSUPP;
5534 goto out_free;
5535 }
5536 }
5537
5538 request->dev = dev;
5539 request->wiphy = &rdev->wiphy;
5540 request->interval = interval;
5541 request->scan_start = jiffies;
5542
5543 err = rdev_sched_scan_start(rdev, dev, request);
5544 if (!err) {
5545 rdev->sched_scan_req = request;
5546 nl80211_send_sched_scan(rdev, dev,
5547 NL80211_CMD_START_SCHED_SCAN);
5548 goto out;
5549 }
5550
5551 out_free:
5552 kfree(request);
5553 out:
5554 mutex_unlock(&rdev->sched_scan_mtx);
5555 return err;
5556 }
5557
5558 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5559 struct genl_info *info)
5560 {
5561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5562 int err;
5563
5564 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5565 !rdev->ops->sched_scan_stop)
5566 return -EOPNOTSUPP;
5567
5568 mutex_lock(&rdev->sched_scan_mtx);
5569 err = __cfg80211_stop_sched_scan(rdev, false);
5570 mutex_unlock(&rdev->sched_scan_mtx);
5571
5572 return err;
5573 }
5574
5575 static int nl80211_start_radar_detection(struct sk_buff *skb,
5576 struct genl_info *info)
5577 {
5578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5579 struct net_device *dev = info->user_ptr[1];
5580 struct wireless_dev *wdev = dev->ieee80211_ptr;
5581 struct cfg80211_chan_def chandef;
5582 int err;
5583
5584 err = nl80211_parse_chandef(rdev, info, &chandef);
5585 if (err)
5586 return err;
5587
5588 if (wdev->cac_started)
5589 return -EBUSY;
5590
5591 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5592 if (err < 0)
5593 return err;
5594
5595 if (err == 0)
5596 return -EINVAL;
5597
5598 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5599 return -EINVAL;
5600
5601 if (!rdev->ops->start_radar_detection)
5602 return -EOPNOTSUPP;
5603
5604 mutex_lock(&rdev->devlist_mtx);
5605 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5606 chandef.chan, CHAN_MODE_SHARED,
5607 BIT(chandef.width));
5608 if (err)
5609 goto err_locked;
5610
5611 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5612 if (!err) {
5613 wdev->channel = chandef.chan;
5614 wdev->cac_started = true;
5615 wdev->cac_start_time = jiffies;
5616 }
5617 err_locked:
5618 mutex_unlock(&rdev->devlist_mtx);
5619
5620 return err;
5621 }
5622
5623 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5624 u32 seq, int flags,
5625 struct cfg80211_registered_device *rdev,
5626 struct wireless_dev *wdev,
5627 struct cfg80211_internal_bss *intbss)
5628 {
5629 struct cfg80211_bss *res = &intbss->pub;
5630 const struct cfg80211_bss_ies *ies;
5631 void *hdr;
5632 struct nlattr *bss;
5633 bool tsf = false;
5634
5635 ASSERT_WDEV_LOCK(wdev);
5636
5637 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5638 NL80211_CMD_NEW_SCAN_RESULTS);
5639 if (!hdr)
5640 return -1;
5641
5642 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5643
5644 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5645 goto nla_put_failure;
5646 if (wdev->netdev &&
5647 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5648 goto nla_put_failure;
5649 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5650 goto nla_put_failure;
5651
5652 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5653 if (!bss)
5654 goto nla_put_failure;
5655 if ((!is_zero_ether_addr(res->bssid) &&
5656 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5657 goto nla_put_failure;
5658
5659 rcu_read_lock();
5660 ies = rcu_dereference(res->ies);
5661 if (ies) {
5662 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5663 goto fail_unlock_rcu;
5664 tsf = true;
5665 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5666 ies->len, ies->data))
5667 goto fail_unlock_rcu;
5668 }
5669 ies = rcu_dereference(res->beacon_ies);
5670 if (ies) {
5671 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5672 goto fail_unlock_rcu;
5673 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5674 ies->len, ies->data))
5675 goto fail_unlock_rcu;
5676 }
5677 rcu_read_unlock();
5678
5679 if (res->beacon_interval &&
5680 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5681 goto nla_put_failure;
5682 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5683 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5684 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5685 jiffies_to_msecs(jiffies - intbss->ts)))
5686 goto nla_put_failure;
5687
5688 switch (rdev->wiphy.signal_type) {
5689 case CFG80211_SIGNAL_TYPE_MBM:
5690 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5691 goto nla_put_failure;
5692 break;
5693 case CFG80211_SIGNAL_TYPE_UNSPEC:
5694 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5695 goto nla_put_failure;
5696 break;
5697 default:
5698 break;
5699 }
5700
5701 switch (wdev->iftype) {
5702 case NL80211_IFTYPE_P2P_CLIENT:
5703 case NL80211_IFTYPE_STATION:
5704 if (intbss == wdev->current_bss &&
5705 nla_put_u32(msg, NL80211_BSS_STATUS,
5706 NL80211_BSS_STATUS_ASSOCIATED))
5707 goto nla_put_failure;
5708 break;
5709 case NL80211_IFTYPE_ADHOC:
5710 if (intbss == wdev->current_bss &&
5711 nla_put_u32(msg, NL80211_BSS_STATUS,
5712 NL80211_BSS_STATUS_IBSS_JOINED))
5713 goto nla_put_failure;
5714 break;
5715 default:
5716 break;
5717 }
5718
5719 nla_nest_end(msg, bss);
5720
5721 return genlmsg_end(msg, hdr);
5722
5723 fail_unlock_rcu:
5724 rcu_read_unlock();
5725 nla_put_failure:
5726 genlmsg_cancel(msg, hdr);
5727 return -EMSGSIZE;
5728 }
5729
5730 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5731 {
5732 struct cfg80211_registered_device *rdev;
5733 struct cfg80211_internal_bss *scan;
5734 struct wireless_dev *wdev;
5735 int start = cb->args[2], idx = 0;
5736 int err;
5737
5738 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5739 if (err)
5740 return err;
5741
5742 wdev_lock(wdev);
5743 spin_lock_bh(&rdev->bss_lock);
5744 cfg80211_bss_expire(rdev);
5745
5746 cb->seq = rdev->bss_generation;
5747
5748 list_for_each_entry(scan, &rdev->bss_list, list) {
5749 if (++idx <= start)
5750 continue;
5751 if (nl80211_send_bss(skb, cb,
5752 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5753 rdev, wdev, scan) < 0) {
5754 idx--;
5755 break;
5756 }
5757 }
5758
5759 spin_unlock_bh(&rdev->bss_lock);
5760 wdev_unlock(wdev);
5761
5762 cb->args[2] = idx;
5763 nl80211_finish_wdev_dump(rdev);
5764
5765 return skb->len;
5766 }
5767
5768 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5769 int flags, struct net_device *dev,
5770 struct survey_info *survey)
5771 {
5772 void *hdr;
5773 struct nlattr *infoattr;
5774
5775 hdr = nl80211hdr_put(msg, portid, seq, flags,
5776 NL80211_CMD_NEW_SURVEY_RESULTS);
5777 if (!hdr)
5778 return -ENOMEM;
5779
5780 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5781 goto nla_put_failure;
5782
5783 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5784 if (!infoattr)
5785 goto nla_put_failure;
5786
5787 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5788 survey->channel->center_freq))
5789 goto nla_put_failure;
5790
5791 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5792 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5793 goto nla_put_failure;
5794 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5795 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5796 goto nla_put_failure;
5797 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5798 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5799 survey->channel_time))
5800 goto nla_put_failure;
5801 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5802 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5803 survey->channel_time_busy))
5804 goto nla_put_failure;
5805 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5806 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5807 survey->channel_time_ext_busy))
5808 goto nla_put_failure;
5809 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5810 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5811 survey->channel_time_rx))
5812 goto nla_put_failure;
5813 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5814 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5815 survey->channel_time_tx))
5816 goto nla_put_failure;
5817
5818 nla_nest_end(msg, infoattr);
5819
5820 return genlmsg_end(msg, hdr);
5821
5822 nla_put_failure:
5823 genlmsg_cancel(msg, hdr);
5824 return -EMSGSIZE;
5825 }
5826
5827 static int nl80211_dump_survey(struct sk_buff *skb,
5828 struct netlink_callback *cb)
5829 {
5830 struct survey_info survey;
5831 struct cfg80211_registered_device *dev;
5832 struct wireless_dev *wdev;
5833 int survey_idx = cb->args[2];
5834 int res;
5835
5836 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5837 if (res)
5838 return res;
5839
5840 if (!wdev->netdev) {
5841 res = -EINVAL;
5842 goto out_err;
5843 }
5844
5845 if (!dev->ops->dump_survey) {
5846 res = -EOPNOTSUPP;
5847 goto out_err;
5848 }
5849
5850 while (1) {
5851 struct ieee80211_channel *chan;
5852
5853 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5854 if (res == -ENOENT)
5855 break;
5856 if (res)
5857 goto out_err;
5858
5859 /* Survey without a channel doesn't make sense */
5860 if (!survey.channel) {
5861 res = -EINVAL;
5862 goto out;
5863 }
5864
5865 chan = ieee80211_get_channel(&dev->wiphy,
5866 survey.channel->center_freq);
5867 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5868 survey_idx++;
5869 continue;
5870 }
5871
5872 if (nl80211_send_survey(skb,
5873 NETLINK_CB(cb->skb).portid,
5874 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5875 wdev->netdev, &survey) < 0)
5876 goto out;
5877 survey_idx++;
5878 }
5879
5880 out:
5881 cb->args[2] = survey_idx;
5882 res = skb->len;
5883 out_err:
5884 nl80211_finish_wdev_dump(dev);
5885 return res;
5886 }
5887
5888 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5889 {
5890 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5891 NL80211_WPA_VERSION_2));
5892 }
5893
5894 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5895 {
5896 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5897 struct net_device *dev = info->user_ptr[1];
5898 struct ieee80211_channel *chan;
5899 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5900 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5901 enum nl80211_auth_type auth_type;
5902 struct key_parse key;
5903 bool local_state_change;
5904
5905 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5906 return -EINVAL;
5907
5908 if (!info->attrs[NL80211_ATTR_MAC])
5909 return -EINVAL;
5910
5911 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5912 return -EINVAL;
5913
5914 if (!info->attrs[NL80211_ATTR_SSID])
5915 return -EINVAL;
5916
5917 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5918 return -EINVAL;
5919
5920 err = nl80211_parse_key(info, &key);
5921 if (err)
5922 return err;
5923
5924 if (key.idx >= 0) {
5925 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5926 return -EINVAL;
5927 if (!key.p.key || !key.p.key_len)
5928 return -EINVAL;
5929 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5930 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5931 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5932 key.p.key_len != WLAN_KEY_LEN_WEP104))
5933 return -EINVAL;
5934 if (key.idx > 4)
5935 return -EINVAL;
5936 } else {
5937 key.p.key_len = 0;
5938 key.p.key = NULL;
5939 }
5940
5941 if (key.idx >= 0) {
5942 int i;
5943 bool ok = false;
5944 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5945 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5946 ok = true;
5947 break;
5948 }
5949 }
5950 if (!ok)
5951 return -EINVAL;
5952 }
5953
5954 if (!rdev->ops->auth)
5955 return -EOPNOTSUPP;
5956
5957 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5958 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5959 return -EOPNOTSUPP;
5960
5961 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5962 chan = ieee80211_get_channel(&rdev->wiphy,
5963 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5964 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5965 return -EINVAL;
5966
5967 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5968 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5969
5970 if (info->attrs[NL80211_ATTR_IE]) {
5971 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5972 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5973 }
5974
5975 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5976 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5977 return -EINVAL;
5978
5979 if (auth_type == NL80211_AUTHTYPE_SAE &&
5980 !info->attrs[NL80211_ATTR_SAE_DATA])
5981 return -EINVAL;
5982
5983 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5984 if (auth_type != NL80211_AUTHTYPE_SAE)
5985 return -EINVAL;
5986 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5987 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5988 /* need to include at least Auth Transaction and Status Code */
5989 if (sae_data_len < 4)
5990 return -EINVAL;
5991 }
5992
5993 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5994
5995 /*
5996 * Since we no longer track auth state, ignore
5997 * requests to only change local state.
5998 */
5999 if (local_state_change)
6000 return 0;
6001
6002 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6003 ssid, ssid_len, ie, ie_len,
6004 key.p.key, key.p.key_len, key.idx,
6005 sae_data, sae_data_len);
6006 }
6007
6008 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6009 struct genl_info *info,
6010 struct cfg80211_crypto_settings *settings,
6011 int cipher_limit)
6012 {
6013 memset(settings, 0, sizeof(*settings));
6014
6015 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6016
6017 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6018 u16 proto;
6019 proto = nla_get_u16(
6020 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6021 settings->control_port_ethertype = cpu_to_be16(proto);
6022 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6023 proto != ETH_P_PAE)
6024 return -EINVAL;
6025 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6026 settings->control_port_no_encrypt = true;
6027 } else
6028 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6029
6030 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6031 void *data;
6032 int len, i;
6033
6034 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6035 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6036 settings->n_ciphers_pairwise = len / sizeof(u32);
6037
6038 if (len % sizeof(u32))
6039 return -EINVAL;
6040
6041 if (settings->n_ciphers_pairwise > cipher_limit)
6042 return -EINVAL;
6043
6044 memcpy(settings->ciphers_pairwise, data, len);
6045
6046 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6047 if (!cfg80211_supported_cipher_suite(
6048 &rdev->wiphy,
6049 settings->ciphers_pairwise[i]))
6050 return -EINVAL;
6051 }
6052
6053 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6054 settings->cipher_group =
6055 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6056 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6057 settings->cipher_group))
6058 return -EINVAL;
6059 }
6060
6061 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6062 settings->wpa_versions =
6063 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6064 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6065 return -EINVAL;
6066 }
6067
6068 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6069 void *data;
6070 int len;
6071
6072 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6073 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6074 settings->n_akm_suites = len / sizeof(u32);
6075
6076 if (len % sizeof(u32))
6077 return -EINVAL;
6078
6079 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6080 return -EINVAL;
6081
6082 memcpy(settings->akm_suites, data, len);
6083 }
6084
6085 return 0;
6086 }
6087
6088 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6089 {
6090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6091 struct net_device *dev = info->user_ptr[1];
6092 struct ieee80211_channel *chan;
6093 struct cfg80211_assoc_request req = {};
6094 const u8 *bssid, *ssid;
6095 int err, ssid_len = 0;
6096
6097 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6098 return -EINVAL;
6099
6100 if (!info->attrs[NL80211_ATTR_MAC] ||
6101 !info->attrs[NL80211_ATTR_SSID] ||
6102 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6103 return -EINVAL;
6104
6105 if (!rdev->ops->assoc)
6106 return -EOPNOTSUPP;
6107
6108 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6109 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6110 return -EOPNOTSUPP;
6111
6112 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6113
6114 chan = ieee80211_get_channel(&rdev->wiphy,
6115 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6116 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6117 return -EINVAL;
6118
6119 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6120 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6121
6122 if (info->attrs[NL80211_ATTR_IE]) {
6123 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6124 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6125 }
6126
6127 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6128 enum nl80211_mfp mfp =
6129 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6130 if (mfp == NL80211_MFP_REQUIRED)
6131 req.use_mfp = true;
6132 else if (mfp != NL80211_MFP_NO)
6133 return -EINVAL;
6134 }
6135
6136 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6137 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6138
6139 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6140 req.flags |= ASSOC_REQ_DISABLE_HT;
6141
6142 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6143 memcpy(&req.ht_capa_mask,
6144 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6145 sizeof(req.ht_capa_mask));
6146
6147 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6148 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6149 return -EINVAL;
6150 memcpy(&req.ht_capa,
6151 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6152 sizeof(req.ht_capa));
6153 }
6154
6155 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6156 req.flags |= ASSOC_REQ_DISABLE_VHT;
6157
6158 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6159 memcpy(&req.vht_capa_mask,
6160 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6161 sizeof(req.vht_capa_mask));
6162
6163 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6164 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6165 return -EINVAL;
6166 memcpy(&req.vht_capa,
6167 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6168 sizeof(req.vht_capa));
6169 }
6170
6171 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6172 if (!err)
6173 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6174 ssid, ssid_len, &req);
6175
6176 return err;
6177 }
6178
6179 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6180 {
6181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6182 struct net_device *dev = info->user_ptr[1];
6183 const u8 *ie = NULL, *bssid;
6184 int ie_len = 0;
6185 u16 reason_code;
6186 bool local_state_change;
6187
6188 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6189 return -EINVAL;
6190
6191 if (!info->attrs[NL80211_ATTR_MAC])
6192 return -EINVAL;
6193
6194 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6195 return -EINVAL;
6196
6197 if (!rdev->ops->deauth)
6198 return -EOPNOTSUPP;
6199
6200 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6202 return -EOPNOTSUPP;
6203
6204 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6205
6206 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6207 if (reason_code == 0) {
6208 /* Reason Code 0 is reserved */
6209 return -EINVAL;
6210 }
6211
6212 if (info->attrs[NL80211_ATTR_IE]) {
6213 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6214 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6215 }
6216
6217 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6218
6219 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6220 local_state_change);
6221 }
6222
6223 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6224 {
6225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6226 struct net_device *dev = info->user_ptr[1];
6227 const u8 *ie = NULL, *bssid;
6228 int ie_len = 0;
6229 u16 reason_code;
6230 bool local_state_change;
6231
6232 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6233 return -EINVAL;
6234
6235 if (!info->attrs[NL80211_ATTR_MAC])
6236 return -EINVAL;
6237
6238 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6239 return -EINVAL;
6240
6241 if (!rdev->ops->disassoc)
6242 return -EOPNOTSUPP;
6243
6244 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6246 return -EOPNOTSUPP;
6247
6248 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6249
6250 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6251 if (reason_code == 0) {
6252 /* Reason Code 0 is reserved */
6253 return -EINVAL;
6254 }
6255
6256 if (info->attrs[NL80211_ATTR_IE]) {
6257 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6258 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6259 }
6260
6261 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6262
6263 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6264 local_state_change);
6265 }
6266
6267 static bool
6268 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6269 int mcast_rate[IEEE80211_NUM_BANDS],
6270 int rateval)
6271 {
6272 struct wiphy *wiphy = &rdev->wiphy;
6273 bool found = false;
6274 int band, i;
6275
6276 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6277 struct ieee80211_supported_band *sband;
6278
6279 sband = wiphy->bands[band];
6280 if (!sband)
6281 continue;
6282
6283 for (i = 0; i < sband->n_bitrates; i++) {
6284 if (sband->bitrates[i].bitrate == rateval) {
6285 mcast_rate[band] = i + 1;
6286 found = true;
6287 break;
6288 }
6289 }
6290 }
6291
6292 return found;
6293 }
6294
6295 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6296 {
6297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298 struct net_device *dev = info->user_ptr[1];
6299 struct cfg80211_ibss_params ibss;
6300 struct wiphy *wiphy;
6301 struct cfg80211_cached_keys *connkeys = NULL;
6302 int err;
6303
6304 memset(&ibss, 0, sizeof(ibss));
6305
6306 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6307 return -EINVAL;
6308
6309 if (!info->attrs[NL80211_ATTR_SSID] ||
6310 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6311 return -EINVAL;
6312
6313 ibss.beacon_interval = 100;
6314
6315 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6316 ibss.beacon_interval =
6317 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6318 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6319 return -EINVAL;
6320 }
6321
6322 if (!rdev->ops->join_ibss)
6323 return -EOPNOTSUPP;
6324
6325 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6326 return -EOPNOTSUPP;
6327
6328 wiphy = &rdev->wiphy;
6329
6330 if (info->attrs[NL80211_ATTR_MAC]) {
6331 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6332
6333 if (!is_valid_ether_addr(ibss.bssid))
6334 return -EINVAL;
6335 }
6336 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6337 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6338
6339 if (info->attrs[NL80211_ATTR_IE]) {
6340 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6341 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6342 }
6343
6344 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6345 if (err)
6346 return err;
6347
6348 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6349 return -EINVAL;
6350
6351 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6352 return -EINVAL;
6353 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6354 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6355 return -EINVAL;
6356
6357 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6358 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6359
6360 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6361 u8 *rates =
6362 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6363 int n_rates =
6364 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6365 struct ieee80211_supported_band *sband =
6366 wiphy->bands[ibss.chandef.chan->band];
6367
6368 err = ieee80211_get_ratemask(sband, rates, n_rates,
6369 &ibss.basic_rates);
6370 if (err)
6371 return err;
6372 }
6373
6374 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6375 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6376 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6377 return -EINVAL;
6378
6379 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6380 bool no_ht = false;
6381
6382 connkeys = nl80211_parse_connkeys(rdev,
6383 info->attrs[NL80211_ATTR_KEYS],
6384 &no_ht);
6385 if (IS_ERR(connkeys))
6386 return PTR_ERR(connkeys);
6387
6388 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6389 no_ht) {
6390 kfree(connkeys);
6391 return -EINVAL;
6392 }
6393 }
6394
6395 ibss.control_port =
6396 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6397
6398 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6399 if (err)
6400 kfree(connkeys);
6401 return err;
6402 }
6403
6404 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6405 {
6406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6407 struct net_device *dev = info->user_ptr[1];
6408
6409 if (!rdev->ops->leave_ibss)
6410 return -EOPNOTSUPP;
6411
6412 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6413 return -EOPNOTSUPP;
6414
6415 return cfg80211_leave_ibss(rdev, dev, false);
6416 }
6417
6418 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6419 {
6420 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6421 struct net_device *dev = info->user_ptr[1];
6422 int mcast_rate[IEEE80211_NUM_BANDS];
6423 u32 nla_rate;
6424 int err;
6425
6426 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6427 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6428 return -EOPNOTSUPP;
6429
6430 if (!rdev->ops->set_mcast_rate)
6431 return -EOPNOTSUPP;
6432
6433 memset(mcast_rate, 0, sizeof(mcast_rate));
6434
6435 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6436 return -EINVAL;
6437
6438 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6439 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6440 return -EINVAL;
6441
6442 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6443
6444 return err;
6445 }
6446
6447 static struct sk_buff *
6448 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6449 int approxlen, u32 portid, u32 seq,
6450 enum nl80211_commands cmd,
6451 enum nl80211_attrs attr,
6452 const struct nl80211_vendor_cmd_info *info,
6453 gfp_t gfp)
6454 {
6455 struct sk_buff *skb;
6456 void *hdr;
6457 struct nlattr *data;
6458
6459 skb = nlmsg_new(approxlen + 100, gfp);
6460 if (!skb)
6461 return NULL;
6462
6463 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6464 if (!hdr) {
6465 kfree_skb(skb);
6466 return NULL;
6467 }
6468
6469 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6470 goto nla_put_failure;
6471
6472 if (info) {
6473 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6474 info->vendor_id))
6475 goto nla_put_failure;
6476 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6477 info->subcmd))
6478 goto nla_put_failure;
6479 }
6480
6481 data = nla_nest_start(skb, attr);
6482
6483 ((void **)skb->cb)[0] = rdev;
6484 ((void **)skb->cb)[1] = hdr;
6485 ((void **)skb->cb)[2] = data;
6486
6487 return skb;
6488
6489 nla_put_failure:
6490 kfree_skb(skb);
6491 return NULL;
6492 }
6493
6494 #ifdef CONFIG_NL80211_TESTMODE
6495 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6496 .name = "testmode",
6497 };
6498
6499 static struct genl_multicast_group nl80211_vendor_mcgrp = {
6500 .name = "vendor",
6501 };
6502
6503 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6504 {
6505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6506 int err;
6507
6508 if (!info->attrs[NL80211_ATTR_TESTDATA])
6509 return -EINVAL;
6510
6511 err = -EOPNOTSUPP;
6512 if (rdev->ops->testmode_cmd) {
6513 rdev->cur_cmd_info = info;
6514 err = rdev_testmode_cmd(rdev,
6515 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6516 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6517 rdev->cur_cmd_info = NULL;
6518 }
6519
6520 return err;
6521 }
6522
6523 static int nl80211_testmode_dump(struct sk_buff *skb,
6524 struct netlink_callback *cb)
6525 {
6526 struct cfg80211_registered_device *rdev;
6527 int err;
6528 long phy_idx;
6529 void *data = NULL;
6530 int data_len = 0;
6531
6532 if (cb->args[0]) {
6533 /*
6534 * 0 is a valid index, but not valid for args[0],
6535 * so we need to offset by 1.
6536 */
6537 phy_idx = cb->args[0] - 1;
6538 } else {
6539 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6540 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6541 nl80211_policy);
6542 if (err)
6543 return err;
6544
6545 mutex_lock(&cfg80211_mutex);
6546 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6547 nl80211_fam.attrbuf);
6548 if (IS_ERR(rdev)) {
6549 mutex_unlock(&cfg80211_mutex);
6550 return PTR_ERR(rdev);
6551 }
6552 phy_idx = rdev->wiphy_idx;
6553 rdev = NULL;
6554 mutex_unlock(&cfg80211_mutex);
6555
6556 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6557 cb->args[1] =
6558 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6559 }
6560
6561 if (cb->args[1]) {
6562 data = nla_data((void *)cb->args[1]);
6563 data_len = nla_len((void *)cb->args[1]);
6564 }
6565
6566 mutex_lock(&cfg80211_mutex);
6567 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6568 if (!rdev) {
6569 mutex_unlock(&cfg80211_mutex);
6570 return -ENOENT;
6571 }
6572 cfg80211_lock_rdev(rdev);
6573 mutex_unlock(&cfg80211_mutex);
6574
6575 if (!rdev->ops->testmode_dump) {
6576 err = -EOPNOTSUPP;
6577 goto out_err;
6578 }
6579
6580 while (1) {
6581 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6582 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6583 NL80211_CMD_TESTMODE);
6584 struct nlattr *tmdata;
6585
6586 if (!hdr)
6587 break;
6588
6589 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6590 genlmsg_cancel(skb, hdr);
6591 break;
6592 }
6593
6594 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6595 if (!tmdata) {
6596 genlmsg_cancel(skb, hdr);
6597 break;
6598 }
6599 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6600 nla_nest_end(skb, tmdata);
6601
6602 if (err == -ENOBUFS || err == -ENOENT) {
6603 genlmsg_cancel(skb, hdr);
6604 break;
6605 } else if (err) {
6606 genlmsg_cancel(skb, hdr);
6607 goto out_err;
6608 }
6609
6610 genlmsg_end(skb, hdr);
6611 }
6612
6613 err = skb->len;
6614 /* see above */
6615 cb->args[0] = phy_idx + 1;
6616 out_err:
6617 cfg80211_unlock_rdev(rdev);
6618 return err;
6619 }
6620
6621 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6622 enum nl80211_commands cmd,
6623 enum nl80211_attrs attr,
6624 int vendor_event_idx,
6625 int approxlen, gfp_t gfp)
6626 {
6627 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6628 const struct nl80211_vendor_cmd_info *info;
6629
6630 switch (cmd) {
6631 case NL80211_CMD_TESTMODE:
6632 if (WARN_ON(vendor_event_idx != -1))
6633 return NULL;
6634 info = NULL;
6635 break;
6636 case NL80211_CMD_VENDOR:
6637 if (WARN_ON(vendor_event_idx < 0 ||
6638 vendor_event_idx >= wiphy->n_vendor_events))
6639 return NULL;
6640 info = &wiphy->vendor_events[vendor_event_idx];
6641 break;
6642 default:
6643 WARN_ON(1);
6644 return NULL;
6645 }
6646 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6647 cmd, attr, info, gfp);
6648 }
6649 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6650
6651 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6652 {
6653 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6654 void *hdr = ((void **)skb->cb)[1];
6655 struct nlattr *data = ((void **)skb->cb)[2];
6656
6657 /* clear CB data for netlink core to own from now on */
6658 memset(skb->cb, 0, sizeof(skb->cb));
6659
6660 nla_nest_end(skb, data);
6661 genlmsg_end(skb, hdr);
6662
6663 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6664 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6665 nl80211_vendor_mcgrp.id, gfp);
6666 else
6667 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6668 nl80211_testmode_mcgrp.id, gfp);
6669 }
6670 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6671 #endif
6672
6673 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6674 {
6675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6676 struct net_device *dev = info->user_ptr[1];
6677 struct cfg80211_connect_params connect;
6678 struct wiphy *wiphy;
6679 struct cfg80211_cached_keys *connkeys = NULL;
6680 int err;
6681
6682 memset(&connect, 0, sizeof(connect));
6683
6684 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6685 return -EINVAL;
6686
6687 if (!info->attrs[NL80211_ATTR_SSID] ||
6688 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6689 return -EINVAL;
6690
6691 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6692 connect.auth_type =
6693 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6694 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6695 NL80211_CMD_CONNECT))
6696 return -EINVAL;
6697 } else
6698 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6699
6700 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6701
6702 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6703 NL80211_MAX_NR_CIPHER_SUITES);
6704 if (err)
6705 return err;
6706
6707 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6708 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6709 return -EOPNOTSUPP;
6710
6711 wiphy = &rdev->wiphy;
6712
6713 connect.bg_scan_period = -1;
6714 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6715 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6716 connect.bg_scan_period =
6717 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6718 }
6719
6720 if (info->attrs[NL80211_ATTR_MAC])
6721 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6722 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6723 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6724
6725 if (info->attrs[NL80211_ATTR_IE]) {
6726 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6727 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6728 }
6729
6730 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6731 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6732 if (connect.mfp != NL80211_MFP_REQUIRED &&
6733 connect.mfp != NL80211_MFP_NO)
6734 return -EINVAL;
6735 } else {
6736 connect.mfp = NL80211_MFP_NO;
6737 }
6738
6739 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6740 connect.channel =
6741 ieee80211_get_channel(wiphy,
6742 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6743 if (!connect.channel ||
6744 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6745 return -EINVAL;
6746 }
6747
6748 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6749 connkeys = nl80211_parse_connkeys(rdev,
6750 info->attrs[NL80211_ATTR_KEYS], NULL);
6751 if (IS_ERR(connkeys))
6752 return PTR_ERR(connkeys);
6753 }
6754
6755 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6756 connect.flags |= ASSOC_REQ_DISABLE_HT;
6757
6758 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6759 memcpy(&connect.ht_capa_mask,
6760 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6761 sizeof(connect.ht_capa_mask));
6762
6763 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6764 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6765 kfree(connkeys);
6766 return -EINVAL;
6767 }
6768 memcpy(&connect.ht_capa,
6769 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6770 sizeof(connect.ht_capa));
6771 }
6772
6773 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6774 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6775
6776 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6777 memcpy(&connect.vht_capa_mask,
6778 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6779 sizeof(connect.vht_capa_mask));
6780
6781 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6782 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6783 kfree(connkeys);
6784 return -EINVAL;
6785 }
6786 memcpy(&connect.vht_capa,
6787 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6788 sizeof(connect.vht_capa));
6789 }
6790
6791 err = cfg80211_connect(rdev, dev, &connect, connkeys);
6792 if (err)
6793 kfree(connkeys);
6794 return err;
6795 }
6796
6797 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6798 {
6799 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6800 struct net_device *dev = info->user_ptr[1];
6801 u16 reason;
6802
6803 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6804 reason = WLAN_REASON_DEAUTH_LEAVING;
6805 else
6806 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6807
6808 if (reason == 0)
6809 return -EINVAL;
6810
6811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6812 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6813 return -EOPNOTSUPP;
6814
6815 return cfg80211_disconnect(rdev, dev, reason, true);
6816 }
6817
6818 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6819 {
6820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6821 struct net *net;
6822 int err;
6823 u32 pid;
6824
6825 if (!info->attrs[NL80211_ATTR_PID])
6826 return -EINVAL;
6827
6828 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6829
6830 net = get_net_ns_by_pid(pid);
6831 if (IS_ERR(net))
6832 return PTR_ERR(net);
6833
6834 err = 0;
6835
6836 /* check if anything to do */
6837 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6838 err = cfg80211_switch_netns(rdev, net);
6839
6840 put_net(net);
6841 return err;
6842 }
6843
6844 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6845 {
6846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6847 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6848 struct cfg80211_pmksa *pmksa) = NULL;
6849 struct net_device *dev = info->user_ptr[1];
6850 struct cfg80211_pmksa pmksa;
6851
6852 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6853
6854 if (!info->attrs[NL80211_ATTR_MAC])
6855 return -EINVAL;
6856
6857 if (!info->attrs[NL80211_ATTR_PMKID])
6858 return -EINVAL;
6859
6860 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6861 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6862
6863 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6864 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6865 return -EOPNOTSUPP;
6866
6867 switch (info->genlhdr->cmd) {
6868 case NL80211_CMD_SET_PMKSA:
6869 rdev_ops = rdev->ops->set_pmksa;
6870 break;
6871 case NL80211_CMD_DEL_PMKSA:
6872 rdev_ops = rdev->ops->del_pmksa;
6873 break;
6874 default:
6875 WARN_ON(1);
6876 break;
6877 }
6878
6879 if (!rdev_ops)
6880 return -EOPNOTSUPP;
6881
6882 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6883 }
6884
6885 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6886 {
6887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6888 struct net_device *dev = info->user_ptr[1];
6889
6890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6891 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6892 return -EOPNOTSUPP;
6893
6894 if (!rdev->ops->flush_pmksa)
6895 return -EOPNOTSUPP;
6896
6897 return rdev_flush_pmksa(rdev, dev);
6898 }
6899
6900 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6901 {
6902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6903 struct net_device *dev = info->user_ptr[1];
6904 u8 action_code, dialog_token;
6905 u16 status_code;
6906 u8 *peer;
6907
6908 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6909 !rdev->ops->tdls_mgmt)
6910 return -EOPNOTSUPP;
6911
6912 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6913 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6914 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6915 !info->attrs[NL80211_ATTR_IE] ||
6916 !info->attrs[NL80211_ATTR_MAC])
6917 return -EINVAL;
6918
6919 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6920 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6921 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6922 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6923
6924 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6925 dialog_token, status_code,
6926 nla_data(info->attrs[NL80211_ATTR_IE]),
6927 nla_len(info->attrs[NL80211_ATTR_IE]));
6928 }
6929
6930 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6931 {
6932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6933 struct net_device *dev = info->user_ptr[1];
6934 enum nl80211_tdls_operation operation;
6935 u8 *peer;
6936
6937 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6938 !rdev->ops->tdls_oper)
6939 return -EOPNOTSUPP;
6940
6941 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6942 !info->attrs[NL80211_ATTR_MAC])
6943 return -EINVAL;
6944
6945 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6946 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6947
6948 return rdev_tdls_oper(rdev, dev, peer, operation);
6949 }
6950
6951 static int nl80211_remain_on_channel(struct sk_buff *skb,
6952 struct genl_info *info)
6953 {
6954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6955 struct wireless_dev *wdev = info->user_ptr[1];
6956 struct cfg80211_chan_def chandef;
6957 struct sk_buff *msg;
6958 void *hdr;
6959 u64 cookie;
6960 u32 duration;
6961 int err;
6962
6963 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6964 !info->attrs[NL80211_ATTR_DURATION])
6965 return -EINVAL;
6966
6967 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6968
6969 if (!rdev->ops->remain_on_channel ||
6970 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6971 return -EOPNOTSUPP;
6972
6973 /*
6974 * We should be on that channel for at least a minimum amount of
6975 * time (10ms) but no longer than the driver supports.
6976 */
6977 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6978 duration > rdev->wiphy.max_remain_on_channel_duration)
6979 return -EINVAL;
6980
6981 err = nl80211_parse_chandef(rdev, info, &chandef);
6982 if (err)
6983 return err;
6984
6985 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6986 if (!msg)
6987 return -ENOMEM;
6988
6989 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6990 NL80211_CMD_REMAIN_ON_CHANNEL);
6991 if (!hdr) {
6992 err = -ENOBUFS;
6993 goto free_msg;
6994 }
6995
6996 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6997 duration, &cookie);
6998
6999 if (err)
7000 goto free_msg;
7001
7002 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7003 goto nla_put_failure;
7004
7005 genlmsg_end(msg, hdr);
7006
7007 return genlmsg_reply(msg, info);
7008
7009 nla_put_failure:
7010 err = -ENOBUFS;
7011 free_msg:
7012 nlmsg_free(msg);
7013 return err;
7014 }
7015
7016 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7017 struct genl_info *info)
7018 {
7019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7020 struct wireless_dev *wdev = info->user_ptr[1];
7021 u64 cookie;
7022
7023 if (!info->attrs[NL80211_ATTR_COOKIE])
7024 return -EINVAL;
7025
7026 if (!rdev->ops->cancel_remain_on_channel)
7027 return -EOPNOTSUPP;
7028
7029 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7030
7031 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7032 }
7033
7034 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7035 u8 *rates, u8 rates_len)
7036 {
7037 u8 i;
7038 u32 mask = 0;
7039
7040 for (i = 0; i < rates_len; i++) {
7041 int rate = (rates[i] & 0x7f) * 5;
7042 int ridx;
7043 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7044 struct ieee80211_rate *srate =
7045 &sband->bitrates[ridx];
7046 if (rate == srate->bitrate) {
7047 mask |= 1 << ridx;
7048 break;
7049 }
7050 }
7051 if (ridx == sband->n_bitrates)
7052 return 0; /* rate not found */
7053 }
7054
7055 return mask;
7056 }
7057
7058 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7059 u8 *rates, u8 rates_len,
7060 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7061 {
7062 u8 i;
7063
7064 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7065
7066 for (i = 0; i < rates_len; i++) {
7067 int ridx, rbit;
7068
7069 ridx = rates[i] / 8;
7070 rbit = BIT(rates[i] % 8);
7071
7072 /* check validity */
7073 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7074 return false;
7075
7076 /* check availability */
7077 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7078 mcs[ridx] |= rbit;
7079 else
7080 return false;
7081 }
7082
7083 return true;
7084 }
7085
7086 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7087 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7088 .len = NL80211_MAX_SUPP_RATES },
7089 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7090 .len = NL80211_MAX_SUPP_HT_RATES },
7091 };
7092
7093 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7094 struct genl_info *info)
7095 {
7096 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7098 struct cfg80211_bitrate_mask mask;
7099 int rem, i;
7100 struct net_device *dev = info->user_ptr[1];
7101 struct nlattr *tx_rates;
7102 struct ieee80211_supported_band *sband;
7103
7104 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7105 return -EINVAL;
7106
7107 if (!rdev->ops->set_bitrate_mask)
7108 return -EOPNOTSUPP;
7109
7110 memset(&mask, 0, sizeof(mask));
7111 /* Default to all rates enabled */
7112 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7113 sband = rdev->wiphy.bands[i];
7114 mask.control[i].legacy =
7115 sband ? (1 << sband->n_bitrates) - 1 : 0;
7116 if (sband)
7117 memcpy(mask.control[i].mcs,
7118 sband->ht_cap.mcs.rx_mask,
7119 sizeof(mask.control[i].mcs));
7120 else
7121 memset(mask.control[i].mcs, 0,
7122 sizeof(mask.control[i].mcs));
7123 }
7124
7125 /*
7126 * The nested attribute uses enum nl80211_band as the index. This maps
7127 * directly to the enum ieee80211_band values used in cfg80211.
7128 */
7129 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7130 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7131 {
7132 enum ieee80211_band band = nla_type(tx_rates);
7133 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7134 return -EINVAL;
7135 sband = rdev->wiphy.bands[band];
7136 if (sband == NULL)
7137 return -EINVAL;
7138 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7139 nla_len(tx_rates), nl80211_txattr_policy);
7140 if (tb[NL80211_TXRATE_LEGACY]) {
7141 mask.control[band].legacy = rateset_to_mask(
7142 sband,
7143 nla_data(tb[NL80211_TXRATE_LEGACY]),
7144 nla_len(tb[NL80211_TXRATE_LEGACY]));
7145 if ((mask.control[band].legacy == 0) &&
7146 nla_len(tb[NL80211_TXRATE_LEGACY]))
7147 return -EINVAL;
7148 }
7149 if (tb[NL80211_TXRATE_MCS]) {
7150 if (!ht_rateset_to_mask(
7151 sband,
7152 nla_data(tb[NL80211_TXRATE_MCS]),
7153 nla_len(tb[NL80211_TXRATE_MCS]),
7154 mask.control[band].mcs))
7155 return -EINVAL;
7156 }
7157
7158 if (mask.control[band].legacy == 0) {
7159 /* don't allow empty legacy rates if HT
7160 * is not even supported. */
7161 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7162 return -EINVAL;
7163
7164 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7165 if (mask.control[band].mcs[i])
7166 break;
7167
7168 /* legacy and mcs rates may not be both empty */
7169 if (i == IEEE80211_HT_MCS_MASK_LEN)
7170 return -EINVAL;
7171 }
7172 }
7173
7174 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7175 }
7176
7177 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7178 {
7179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7180 struct wireless_dev *wdev = info->user_ptr[1];
7181 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7182
7183 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7184 return -EINVAL;
7185
7186 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7187 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7188
7189 switch (wdev->iftype) {
7190 case NL80211_IFTYPE_STATION:
7191 case NL80211_IFTYPE_ADHOC:
7192 case NL80211_IFTYPE_P2P_CLIENT:
7193 case NL80211_IFTYPE_AP:
7194 case NL80211_IFTYPE_AP_VLAN:
7195 case NL80211_IFTYPE_MESH_POINT:
7196 case NL80211_IFTYPE_P2P_GO:
7197 case NL80211_IFTYPE_P2P_DEVICE:
7198 break;
7199 default:
7200 return -EOPNOTSUPP;
7201 }
7202
7203 /* not much point in registering if we can't reply */
7204 if (!rdev->ops->mgmt_tx)
7205 return -EOPNOTSUPP;
7206
7207 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7208 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7209 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7210 }
7211
7212 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7213 {
7214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7215 struct wireless_dev *wdev = info->user_ptr[1];
7216 struct cfg80211_chan_def chandef;
7217 int err;
7218 void *hdr = NULL;
7219 u64 cookie;
7220 struct sk_buff *msg = NULL;
7221 unsigned int wait = 0;
7222 bool offchan, no_cck, dont_wait_for_ack;
7223
7224 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7225
7226 if (!info->attrs[NL80211_ATTR_FRAME])
7227 return -EINVAL;
7228
7229 if (!rdev->ops->mgmt_tx)
7230 return -EOPNOTSUPP;
7231
7232 switch (wdev->iftype) {
7233 case NL80211_IFTYPE_STATION:
7234 case NL80211_IFTYPE_ADHOC:
7235 case NL80211_IFTYPE_P2P_CLIENT:
7236 case NL80211_IFTYPE_AP:
7237 case NL80211_IFTYPE_AP_VLAN:
7238 case NL80211_IFTYPE_MESH_POINT:
7239 case NL80211_IFTYPE_P2P_GO:
7240 case NL80211_IFTYPE_P2P_DEVICE:
7241 break;
7242 default:
7243 return -EOPNOTSUPP;
7244 }
7245
7246 if (info->attrs[NL80211_ATTR_DURATION]) {
7247 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7248 return -EINVAL;
7249 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7250
7251 /*
7252 * We should wait on the channel for at least a minimum amount
7253 * of time (10ms) but no longer than the driver supports.
7254 */
7255 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7256 wait > rdev->wiphy.max_remain_on_channel_duration)
7257 return -EINVAL;
7258
7259 }
7260
7261 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7262
7263 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7264 return -EINVAL;
7265
7266 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7267
7268 err = nl80211_parse_chandef(rdev, info, &chandef);
7269 if (err)
7270 return err;
7271
7272 if (!dont_wait_for_ack) {
7273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7274 if (!msg)
7275 return -ENOMEM;
7276
7277 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7278 NL80211_CMD_FRAME);
7279 if (!hdr) {
7280 err = -ENOBUFS;
7281 goto free_msg;
7282 }
7283 }
7284
7285 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7286 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7287 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7288 no_cck, dont_wait_for_ack, &cookie);
7289 if (err)
7290 goto free_msg;
7291
7292 if (msg) {
7293 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7294 goto nla_put_failure;
7295
7296 genlmsg_end(msg, hdr);
7297 return genlmsg_reply(msg, info);
7298 }
7299
7300 return 0;
7301
7302 nla_put_failure:
7303 err = -ENOBUFS;
7304 free_msg:
7305 nlmsg_free(msg);
7306 return err;
7307 }
7308
7309 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7310 {
7311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7312 struct wireless_dev *wdev = info->user_ptr[1];
7313 u64 cookie;
7314
7315 if (!info->attrs[NL80211_ATTR_COOKIE])
7316 return -EINVAL;
7317
7318 if (!rdev->ops->mgmt_tx_cancel_wait)
7319 return -EOPNOTSUPP;
7320
7321 switch (wdev->iftype) {
7322 case NL80211_IFTYPE_STATION:
7323 case NL80211_IFTYPE_ADHOC:
7324 case NL80211_IFTYPE_P2P_CLIENT:
7325 case NL80211_IFTYPE_AP:
7326 case NL80211_IFTYPE_AP_VLAN:
7327 case NL80211_IFTYPE_P2P_GO:
7328 case NL80211_IFTYPE_P2P_DEVICE:
7329 break;
7330 default:
7331 return -EOPNOTSUPP;
7332 }
7333
7334 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7335
7336 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7337 }
7338
7339 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7340 {
7341 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7342 struct wireless_dev *wdev;
7343 struct net_device *dev = info->user_ptr[1];
7344 u8 ps_state;
7345 bool state;
7346 int err;
7347
7348 if (!info->attrs[NL80211_ATTR_PS_STATE])
7349 return -EINVAL;
7350
7351 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7352
7353 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7354 return -EINVAL;
7355
7356 wdev = dev->ieee80211_ptr;
7357
7358 if (!rdev->ops->set_power_mgmt)
7359 return -EOPNOTSUPP;
7360
7361 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7362
7363 if (state == wdev->ps)
7364 return 0;
7365
7366 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7367 if (!err)
7368 wdev->ps = state;
7369 return err;
7370 }
7371
7372 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7373 {
7374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7375 enum nl80211_ps_state ps_state;
7376 struct wireless_dev *wdev;
7377 struct net_device *dev = info->user_ptr[1];
7378 struct sk_buff *msg;
7379 void *hdr;
7380 int err;
7381
7382 wdev = dev->ieee80211_ptr;
7383
7384 if (!rdev->ops->set_power_mgmt)
7385 return -EOPNOTSUPP;
7386
7387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7388 if (!msg)
7389 return -ENOMEM;
7390
7391 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7392 NL80211_CMD_GET_POWER_SAVE);
7393 if (!hdr) {
7394 err = -ENOBUFS;
7395 goto free_msg;
7396 }
7397
7398 if (wdev->ps)
7399 ps_state = NL80211_PS_ENABLED;
7400 else
7401 ps_state = NL80211_PS_DISABLED;
7402
7403 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7404 goto nla_put_failure;
7405
7406 genlmsg_end(msg, hdr);
7407 return genlmsg_reply(msg, info);
7408
7409 nla_put_failure:
7410 err = -ENOBUFS;
7411 free_msg:
7412 nlmsg_free(msg);
7413 return err;
7414 }
7415
7416 static struct nla_policy
7417 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7418 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7419 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7420 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7421 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7422 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7423 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7424 };
7425
7426 static int nl80211_set_cqm_txe(struct genl_info *info,
7427 u32 rate, u32 pkts, u32 intvl)
7428 {
7429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7430 struct wireless_dev *wdev;
7431 struct net_device *dev = info->user_ptr[1];
7432
7433 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7434 return -EINVAL;
7435
7436 wdev = dev->ieee80211_ptr;
7437
7438 if (!rdev->ops->set_cqm_txe_config)
7439 return -EOPNOTSUPP;
7440
7441 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7442 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7443 return -EOPNOTSUPP;
7444
7445 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7446 }
7447
7448 static int nl80211_set_cqm_rssi(struct genl_info *info,
7449 s32 threshold, u32 hysteresis)
7450 {
7451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7452 struct wireless_dev *wdev;
7453 struct net_device *dev = info->user_ptr[1];
7454
7455 if (threshold > 0)
7456 return -EINVAL;
7457
7458 wdev = dev->ieee80211_ptr;
7459
7460 if (!rdev->ops->set_cqm_rssi_config)
7461 return -EOPNOTSUPP;
7462
7463 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7464 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7465 return -EOPNOTSUPP;
7466
7467 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7468 }
7469
7470 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7471 {
7472 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7473 struct nlattr *cqm;
7474 int err;
7475
7476 cqm = info->attrs[NL80211_ATTR_CQM];
7477 if (!cqm) {
7478 err = -EINVAL;
7479 goto out;
7480 }
7481
7482 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7483 nl80211_attr_cqm_policy);
7484 if (err)
7485 goto out;
7486
7487 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7488 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7489 s32 threshold;
7490 u32 hysteresis;
7491 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7492 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7493 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7494 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7495 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7496 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7497 u32 rate, pkts, intvl;
7498 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7499 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7500 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7501 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7502 } else
7503 err = -EINVAL;
7504
7505 out:
7506 return err;
7507 }
7508
7509 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7510 {
7511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7512 struct net_device *dev = info->user_ptr[1];
7513 struct mesh_config cfg;
7514 struct mesh_setup setup;
7515 int err;
7516
7517 /* start with default */
7518 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7519 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7520
7521 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7522 /* and parse parameters if given */
7523 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7524 if (err)
7525 return err;
7526 }
7527
7528 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7529 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7530 return -EINVAL;
7531
7532 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7533 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7534
7535 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7536 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7537 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7538 return -EINVAL;
7539
7540 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7541 setup.beacon_interval =
7542 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7543 if (setup.beacon_interval < 10 ||
7544 setup.beacon_interval > 10000)
7545 return -EINVAL;
7546 }
7547
7548 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7549 setup.dtim_period =
7550 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7551 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7552 return -EINVAL;
7553 }
7554
7555 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7556 /* parse additional setup parameters if given */
7557 err = nl80211_parse_mesh_setup(info, &setup);
7558 if (err)
7559 return err;
7560 }
7561
7562 if (setup.user_mpm)
7563 cfg.auto_open_plinks = false;
7564
7565 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7566 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7567 if (err)
7568 return err;
7569 } else {
7570 /* cfg80211_join_mesh() will sort it out */
7571 setup.chandef.chan = NULL;
7572 }
7573
7574 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7575 }
7576
7577 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7578 {
7579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7580 struct net_device *dev = info->user_ptr[1];
7581
7582 return cfg80211_leave_mesh(rdev, dev);
7583 }
7584
7585 #ifdef CONFIG_PM
7586 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7587 struct cfg80211_registered_device *rdev)
7588 {
7589 struct nlattr *nl_pats, *nl_pat;
7590 int i, pat_len;
7591
7592 if (!rdev->wowlan->n_patterns)
7593 return 0;
7594
7595 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7596 if (!nl_pats)
7597 return -ENOBUFS;
7598
7599 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
7600 nl_pat = nla_nest_start(msg, i + 1);
7601 if (!nl_pat)
7602 return -ENOBUFS;
7603 pat_len = rdev->wowlan->patterns[i].pattern_len;
7604 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7605 DIV_ROUND_UP(pat_len, 8),
7606 rdev->wowlan->patterns[i].mask) ||
7607 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7608 pat_len, rdev->wowlan->patterns[i].pattern) ||
7609 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7610 rdev->wowlan->patterns[i].pkt_offset))
7611 return -ENOBUFS;
7612 nla_nest_end(msg, nl_pat);
7613 }
7614 nla_nest_end(msg, nl_pats);
7615
7616 return 0;
7617 }
7618
7619 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7620 struct cfg80211_wowlan_tcp *tcp)
7621 {
7622 struct nlattr *nl_tcp;
7623
7624 if (!tcp)
7625 return 0;
7626
7627 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7628 if (!nl_tcp)
7629 return -ENOBUFS;
7630
7631 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7632 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7633 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7634 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7635 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7636 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7637 tcp->payload_len, tcp->payload) ||
7638 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7639 tcp->data_interval) ||
7640 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7641 tcp->wake_len, tcp->wake_data) ||
7642 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7643 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7644 return -ENOBUFS;
7645
7646 if (tcp->payload_seq.len &&
7647 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7648 sizeof(tcp->payload_seq), &tcp->payload_seq))
7649 return -ENOBUFS;
7650
7651 if (tcp->payload_tok.len &&
7652 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7653 sizeof(tcp->payload_tok) + tcp->tokens_size,
7654 &tcp->payload_tok))
7655 return -ENOBUFS;
7656
7657 nla_nest_end(msg, nl_tcp);
7658
7659 return 0;
7660 }
7661
7662 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7663 {
7664 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7665 struct sk_buff *msg;
7666 void *hdr;
7667 u32 size = NLMSG_DEFAULT_SIZE;
7668
7669 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7670 !rdev->wiphy.wowlan.tcp)
7671 return -EOPNOTSUPP;
7672
7673 if (rdev->wowlan && rdev->wowlan->tcp) {
7674 /* adjust size to have room for all the data */
7675 size += rdev->wowlan->tcp->tokens_size +
7676 rdev->wowlan->tcp->payload_len +
7677 rdev->wowlan->tcp->wake_len +
7678 rdev->wowlan->tcp->wake_len / 8;
7679 }
7680
7681 msg = nlmsg_new(size, GFP_KERNEL);
7682 if (!msg)
7683 return -ENOMEM;
7684
7685 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7686 NL80211_CMD_GET_WOWLAN);
7687 if (!hdr)
7688 goto nla_put_failure;
7689
7690 if (rdev->wowlan) {
7691 struct nlattr *nl_wowlan;
7692
7693 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7694 if (!nl_wowlan)
7695 goto nla_put_failure;
7696
7697 if ((rdev->wowlan->any &&
7698 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7699 (rdev->wowlan->disconnect &&
7700 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7701 (rdev->wowlan->magic_pkt &&
7702 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7703 (rdev->wowlan->gtk_rekey_failure &&
7704 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7705 (rdev->wowlan->eap_identity_req &&
7706 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7707 (rdev->wowlan->four_way_handshake &&
7708 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7709 (rdev->wowlan->rfkill_release &&
7710 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7711 goto nla_put_failure;
7712
7713 if (nl80211_send_wowlan_patterns(msg, rdev))
7714 goto nla_put_failure;
7715
7716 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
7717 goto nla_put_failure;
7718
7719 nla_nest_end(msg, nl_wowlan);
7720 }
7721
7722 genlmsg_end(msg, hdr);
7723 return genlmsg_reply(msg, info);
7724
7725 nla_put_failure:
7726 nlmsg_free(msg);
7727 return -ENOBUFS;
7728 }
7729
7730 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7731 struct nlattr *attr,
7732 struct cfg80211_wowlan *trig)
7733 {
7734 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7735 struct cfg80211_wowlan_tcp *cfg;
7736 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7737 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7738 u32 size;
7739 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7740 int err, port;
7741
7742 if (!rdev->wiphy.wowlan.tcp)
7743 return -EINVAL;
7744
7745 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7746 nla_data(attr), nla_len(attr),
7747 nl80211_wowlan_tcp_policy);
7748 if (err)
7749 return err;
7750
7751 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7752 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7753 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7754 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7755 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7756 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7757 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7758 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7759 return -EINVAL;
7760
7761 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7762 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7763 return -EINVAL;
7764
7765 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7766 rdev->wiphy.wowlan.tcp->data_interval_max ||
7767 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7768 return -EINVAL;
7769
7770 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7771 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7772 return -EINVAL;
7773
7774 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7775 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7776 return -EINVAL;
7777
7778 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7779 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7780
7781 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7782 tokens_size = tokln - sizeof(*tok);
7783
7784 if (!tok->len || tokens_size % tok->len)
7785 return -EINVAL;
7786 if (!rdev->wiphy.wowlan.tcp->tok)
7787 return -EINVAL;
7788 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7789 return -EINVAL;
7790 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7791 return -EINVAL;
7792 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7793 return -EINVAL;
7794 if (tok->offset + tok->len > data_size)
7795 return -EINVAL;
7796 }
7797
7798 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7799 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7800 if (!rdev->wiphy.wowlan.tcp->seq)
7801 return -EINVAL;
7802 if (seq->len == 0 || seq->len > 4)
7803 return -EINVAL;
7804 if (seq->len + seq->offset > data_size)
7805 return -EINVAL;
7806 }
7807
7808 size = sizeof(*cfg);
7809 size += data_size;
7810 size += wake_size + wake_mask_size;
7811 size += tokens_size;
7812
7813 cfg = kzalloc(size, GFP_KERNEL);
7814 if (!cfg)
7815 return -ENOMEM;
7816 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7817 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7818 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7819 ETH_ALEN);
7820 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7821 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7822 else
7823 port = 0;
7824 #ifdef CONFIG_INET
7825 /* allocate a socket and port for it and use it */
7826 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7827 IPPROTO_TCP, &cfg->sock, 1);
7828 if (err) {
7829 kfree(cfg);
7830 return err;
7831 }
7832 if (inet_csk_get_port(cfg->sock->sk, port)) {
7833 sock_release(cfg->sock);
7834 kfree(cfg);
7835 return -EADDRINUSE;
7836 }
7837 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7838 #else
7839 if (!port) {
7840 kfree(cfg);
7841 return -EINVAL;
7842 }
7843 cfg->src_port = port;
7844 #endif
7845
7846 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7847 cfg->payload_len = data_size;
7848 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7849 memcpy((void *)cfg->payload,
7850 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7851 data_size);
7852 if (seq)
7853 cfg->payload_seq = *seq;
7854 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7855 cfg->wake_len = wake_size;
7856 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7857 memcpy((void *)cfg->wake_data,
7858 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7859 wake_size);
7860 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7861 data_size + wake_size;
7862 memcpy((void *)cfg->wake_mask,
7863 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7864 wake_mask_size);
7865 if (tok) {
7866 cfg->tokens_size = tokens_size;
7867 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7868 }
7869
7870 trig->tcp = cfg;
7871
7872 return 0;
7873 }
7874
7875 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7876 {
7877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7878 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7879 struct cfg80211_wowlan new_triggers = {};
7880 struct cfg80211_wowlan *ntrig;
7881 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7882 int err, i;
7883 bool prev_enabled = rdev->wowlan;
7884
7885 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7886 !rdev->wiphy.wowlan.tcp)
7887 return -EOPNOTSUPP;
7888
7889 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7890 cfg80211_rdev_free_wowlan(rdev);
7891 rdev->wowlan = NULL;
7892 goto set_wakeup;
7893 }
7894
7895 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7896 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7897 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7898 nl80211_wowlan_policy);
7899 if (err)
7900 return err;
7901
7902 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7903 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7904 return -EINVAL;
7905 new_triggers.any = true;
7906 }
7907
7908 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7909 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7910 return -EINVAL;
7911 new_triggers.disconnect = true;
7912 }
7913
7914 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7915 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7916 return -EINVAL;
7917 new_triggers.magic_pkt = true;
7918 }
7919
7920 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7921 return -EINVAL;
7922
7923 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7924 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7925 return -EINVAL;
7926 new_triggers.gtk_rekey_failure = true;
7927 }
7928
7929 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7930 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7931 return -EINVAL;
7932 new_triggers.eap_identity_req = true;
7933 }
7934
7935 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7936 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7937 return -EINVAL;
7938 new_triggers.four_way_handshake = true;
7939 }
7940
7941 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7942 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7943 return -EINVAL;
7944 new_triggers.rfkill_release = true;
7945 }
7946
7947 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7948 struct nlattr *pat;
7949 int n_patterns = 0;
7950 int rem, pat_len, mask_len, pkt_offset;
7951 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7952
7953 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7954 rem)
7955 n_patterns++;
7956 if (n_patterns > wowlan->n_patterns)
7957 return -EINVAL;
7958
7959 new_triggers.patterns = kcalloc(n_patterns,
7960 sizeof(new_triggers.patterns[0]),
7961 GFP_KERNEL);
7962 if (!new_triggers.patterns)
7963 return -ENOMEM;
7964
7965 new_triggers.n_patterns = n_patterns;
7966 i = 0;
7967
7968 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7969 rem) {
7970 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7971 nla_data(pat), nla_len(pat), NULL);
7972 err = -EINVAL;
7973 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7974 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7975 goto error;
7976 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7977 mask_len = DIV_ROUND_UP(pat_len, 8);
7978 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7979 mask_len)
7980 goto error;
7981 if (pat_len > wowlan->pattern_max_len ||
7982 pat_len < wowlan->pattern_min_len)
7983 goto error;
7984
7985 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7986 pkt_offset = 0;
7987 else
7988 pkt_offset = nla_get_u32(
7989 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7990 if (pkt_offset > wowlan->max_pkt_offset)
7991 goto error;
7992 new_triggers.patterns[i].pkt_offset = pkt_offset;
7993
7994 new_triggers.patterns[i].mask =
7995 kmalloc(mask_len + pat_len, GFP_KERNEL);
7996 if (!new_triggers.patterns[i].mask) {
7997 err = -ENOMEM;
7998 goto error;
7999 }
8000 new_triggers.patterns[i].pattern =
8001 new_triggers.patterns[i].mask + mask_len;
8002 memcpy(new_triggers.patterns[i].mask,
8003 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
8004 mask_len);
8005 new_triggers.patterns[i].pattern_len = pat_len;
8006 memcpy(new_triggers.patterns[i].pattern,
8007 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
8008 pat_len);
8009 i++;
8010 }
8011 }
8012
8013 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8014 err = nl80211_parse_wowlan_tcp(
8015 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8016 &new_triggers);
8017 if (err)
8018 goto error;
8019 }
8020
8021 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8022 if (!ntrig) {
8023 err = -ENOMEM;
8024 goto error;
8025 }
8026 cfg80211_rdev_free_wowlan(rdev);
8027 rdev->wowlan = ntrig;
8028
8029 set_wakeup:
8030 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
8031 rdev_set_wakeup(rdev, rdev->wowlan);
8032
8033 return 0;
8034 error:
8035 for (i = 0; i < new_triggers.n_patterns; i++)
8036 kfree(new_triggers.patterns[i].mask);
8037 kfree(new_triggers.patterns);
8038 if (new_triggers.tcp && new_triggers.tcp->sock)
8039 sock_release(new_triggers.tcp->sock);
8040 kfree(new_triggers.tcp);
8041 return err;
8042 }
8043 #endif
8044
8045 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8046 {
8047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8048 struct net_device *dev = info->user_ptr[1];
8049 struct wireless_dev *wdev = dev->ieee80211_ptr;
8050 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8051 struct cfg80211_gtk_rekey_data rekey_data;
8052 int err;
8053
8054 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8055 return -EINVAL;
8056
8057 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8058 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8059 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8060 nl80211_rekey_policy);
8061 if (err)
8062 return err;
8063
8064 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
8065 !tb[NL80211_REKEY_DATA_KCK])
8066 return -EINVAL;
8067 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8068 return -ERANGE;
8069 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8070 return -ERANGE;
8071 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8072 return -ERANGE;
8073
8074 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8075 NL80211_KEK_LEN);
8076 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8077 NL80211_KCK_LEN);
8078 memcpy(rekey_data.replay_ctr,
8079 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8080 NL80211_REPLAY_CTR_LEN);
8081
8082 wdev_lock(wdev);
8083 if (!wdev->current_bss) {
8084 err = -ENOTCONN;
8085 goto out;
8086 }
8087
8088 if (!rdev->ops->set_rekey_data) {
8089 err = -EOPNOTSUPP;
8090 goto out;
8091 }
8092
8093 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8094 out:
8095 wdev_unlock(wdev);
8096 return err;
8097 }
8098
8099 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8100 struct genl_info *info)
8101 {
8102 struct net_device *dev = info->user_ptr[1];
8103 struct wireless_dev *wdev = dev->ieee80211_ptr;
8104
8105 if (wdev->iftype != NL80211_IFTYPE_AP &&
8106 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8107 return -EINVAL;
8108
8109 if (wdev->ap_unexpected_nlportid)
8110 return -EBUSY;
8111
8112 wdev->ap_unexpected_nlportid = info->snd_portid;
8113 return 0;
8114 }
8115
8116 static int nl80211_probe_client(struct sk_buff *skb,
8117 struct genl_info *info)
8118 {
8119 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8120 struct net_device *dev = info->user_ptr[1];
8121 struct wireless_dev *wdev = dev->ieee80211_ptr;
8122 struct sk_buff *msg;
8123 void *hdr;
8124 const u8 *addr;
8125 u64 cookie;
8126 int err;
8127
8128 if (wdev->iftype != NL80211_IFTYPE_AP &&
8129 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8130 return -EOPNOTSUPP;
8131
8132 if (!info->attrs[NL80211_ATTR_MAC])
8133 return -EINVAL;
8134
8135 if (!rdev->ops->probe_client)
8136 return -EOPNOTSUPP;
8137
8138 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8139 if (!msg)
8140 return -ENOMEM;
8141
8142 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8143 NL80211_CMD_PROBE_CLIENT);
8144 if (!hdr) {
8145 err = -ENOBUFS;
8146 goto free_msg;
8147 }
8148
8149 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8150
8151 err = rdev_probe_client(rdev, dev, addr, &cookie);
8152 if (err)
8153 goto free_msg;
8154
8155 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8156 goto nla_put_failure;
8157
8158 genlmsg_end(msg, hdr);
8159
8160 return genlmsg_reply(msg, info);
8161
8162 nla_put_failure:
8163 err = -ENOBUFS;
8164 free_msg:
8165 nlmsg_free(msg);
8166 return err;
8167 }
8168
8169 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8170 {
8171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8172 struct cfg80211_beacon_registration *reg, *nreg;
8173 int rv;
8174
8175 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8176 return -EOPNOTSUPP;
8177
8178 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8179 if (!nreg)
8180 return -ENOMEM;
8181
8182 /* First, check if already registered. */
8183 spin_lock_bh(&rdev->beacon_registrations_lock);
8184 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8185 if (reg->nlportid == info->snd_portid) {
8186 rv = -EALREADY;
8187 goto out_err;
8188 }
8189 }
8190 /* Add it to the list */
8191 nreg->nlportid = info->snd_portid;
8192 list_add(&nreg->list, &rdev->beacon_registrations);
8193
8194 spin_unlock_bh(&rdev->beacon_registrations_lock);
8195
8196 return 0;
8197 out_err:
8198 spin_unlock_bh(&rdev->beacon_registrations_lock);
8199 kfree(nreg);
8200 return rv;
8201 }
8202
8203 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8204 {
8205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8206 struct wireless_dev *wdev = info->user_ptr[1];
8207 int err;
8208
8209 if (!rdev->ops->start_p2p_device)
8210 return -EOPNOTSUPP;
8211
8212 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8213 return -EOPNOTSUPP;
8214
8215 if (wdev->p2p_started)
8216 return 0;
8217
8218 mutex_lock(&rdev->devlist_mtx);
8219 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8220 mutex_unlock(&rdev->devlist_mtx);
8221 if (err)
8222 return err;
8223
8224 err = rdev_start_p2p_device(rdev, wdev);
8225 if (err)
8226 return err;
8227
8228 wdev->p2p_started = true;
8229 mutex_lock(&rdev->devlist_mtx);
8230 rdev->opencount++;
8231 mutex_unlock(&rdev->devlist_mtx);
8232
8233 return 0;
8234 }
8235
8236 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8237 {
8238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8239 struct wireless_dev *wdev = info->user_ptr[1];
8240
8241 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8242 return -EOPNOTSUPP;
8243
8244 if (!rdev->ops->stop_p2p_device)
8245 return -EOPNOTSUPP;
8246
8247 mutex_lock(&rdev->devlist_mtx);
8248 mutex_lock(&rdev->sched_scan_mtx);
8249 cfg80211_stop_p2p_device(rdev, wdev);
8250 mutex_unlock(&rdev->sched_scan_mtx);
8251 mutex_unlock(&rdev->devlist_mtx);
8252
8253 return 0;
8254 }
8255
8256 static int nl80211_get_protocol_features(struct sk_buff *skb,
8257 struct genl_info *info)
8258 {
8259 void *hdr;
8260 struct sk_buff *msg;
8261
8262 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8263 if (!msg)
8264 return -ENOMEM;
8265
8266 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8267 NL80211_CMD_GET_PROTOCOL_FEATURES);
8268 if (!hdr)
8269 goto nla_put_failure;
8270
8271 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8272 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8273 goto nla_put_failure;
8274
8275 genlmsg_end(msg, hdr);
8276 return genlmsg_reply(msg, info);
8277
8278 nla_put_failure:
8279 kfree_skb(msg);
8280 return -ENOBUFS;
8281 }
8282
8283 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8284 {
8285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8286 struct cfg80211_update_ft_ies_params ft_params;
8287 struct net_device *dev = info->user_ptr[1];
8288
8289 if (!rdev->ops->update_ft_ies)
8290 return -EOPNOTSUPP;
8291
8292 if (!info->attrs[NL80211_ATTR_MDID] ||
8293 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8294 return -EINVAL;
8295
8296 memset(&ft_params, 0, sizeof(ft_params));
8297 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8298 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8299 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8300
8301 return rdev_update_ft_ies(rdev, dev, &ft_params);
8302 }
8303
8304 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8305 struct genl_info *info)
8306 {
8307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8308 struct wireless_dev *wdev = info->user_ptr[1];
8309 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8310 u16 duration;
8311 int ret;
8312
8313 if (!rdev->ops->crit_proto_start)
8314 return -EOPNOTSUPP;
8315
8316 if (WARN_ON(!rdev->ops->crit_proto_stop))
8317 return -EINVAL;
8318
8319 if (rdev->crit_proto_nlportid)
8320 return -EBUSY;
8321
8322 /* determine protocol if provided */
8323 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8324 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8325
8326 if (proto >= NUM_NL80211_CRIT_PROTO)
8327 return -EINVAL;
8328
8329 /* timeout must be provided */
8330 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8331 return -EINVAL;
8332
8333 duration =
8334 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8335
8336 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8337 return -ERANGE;
8338
8339 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8340 if (!ret)
8341 rdev->crit_proto_nlportid = info->snd_portid;
8342
8343 return ret;
8344 }
8345
8346 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8347 struct genl_info *info)
8348 {
8349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8350 struct wireless_dev *wdev = info->user_ptr[1];
8351
8352 if (!rdev->ops->crit_proto_stop)
8353 return -EOPNOTSUPP;
8354
8355 if (rdev->crit_proto_nlportid) {
8356 rdev->crit_proto_nlportid = 0;
8357 rdev_crit_proto_stop(rdev, wdev);
8358 }
8359 return 0;
8360 }
8361
8362 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
8363 {
8364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8365 struct wireless_dev *wdev =
8366 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8367 int i, err;
8368 u32 vid, subcmd;
8369
8370 if (!rdev || !rdev->wiphy.vendor_commands)
8371 return -EOPNOTSUPP;
8372
8373 if (IS_ERR(wdev)) {
8374 err = PTR_ERR(wdev);
8375 if (err != -EINVAL)
8376 return err;
8377 wdev = NULL;
8378 } else if (wdev->wiphy != &rdev->wiphy) {
8379 return -EINVAL;
8380 }
8381
8382 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
8383 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
8384 return -EINVAL;
8385
8386 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
8387 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
8388 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
8389 const struct wiphy_vendor_command *vcmd;
8390 void *data = NULL;
8391 int len = 0;
8392
8393 vcmd = &rdev->wiphy.vendor_commands[i];
8394
8395 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
8396 continue;
8397
8398 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
8399 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
8400 if (!wdev)
8401 return -EINVAL;
8402 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
8403 !wdev->netdev)
8404 return -EINVAL;
8405
8406 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
8407 if (!wdev->netdev ||
8408 !netif_running(wdev->netdev))
8409 return -ENETDOWN;
8410 }
8411 } else {
8412 wdev = NULL;
8413 }
8414
8415 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
8416 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8417 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8418 }
8419
8420 rdev->cur_cmd_info = info;
8421 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
8422 data, len);
8423 rdev->cur_cmd_info = NULL;
8424 return err;
8425 }
8426
8427 return -EOPNOTSUPP;
8428 }
8429
8430 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
8431 enum nl80211_commands cmd,
8432 enum nl80211_attrs attr,
8433 int approxlen)
8434 {
8435 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8436
8437 if (WARN_ON(!rdev->cur_cmd_info))
8438 return NULL;
8439
8440 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
8441 0,
8442 0,
8443 cmd, attr, NULL, GFP_KERNEL);
8444 }
8445 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
8446
8447 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
8448 {
8449 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8450 void *hdr = ((void **)skb->cb)[1];
8451 struct nlattr *data = ((void **)skb->cb)[2];
8452
8453 if (WARN_ON(!rdev->cur_cmd_info)) {
8454 kfree_skb(skb);
8455 return -EINVAL;
8456 }
8457
8458 nla_nest_end(skb, data);
8459 genlmsg_end(skb, hdr);
8460 return genlmsg_reply(skb, rdev->cur_cmd_info);
8461 }
8462 EXPORT_SYMBOL(cfg80211_vendor_cmd_reply);
8463
8464 #define NL80211_FLAG_NEED_WIPHY 0x01
8465 #define NL80211_FLAG_NEED_NETDEV 0x02
8466 #define NL80211_FLAG_NEED_RTNL 0x04
8467 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8468 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8469 NL80211_FLAG_CHECK_NETDEV_UP)
8470 #define NL80211_FLAG_NEED_WDEV 0x10
8471 /* If a netdev is associated, it must be UP, P2P must be started */
8472 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8473 NL80211_FLAG_CHECK_NETDEV_UP)
8474
8475 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8476 struct genl_info *info)
8477 {
8478 struct cfg80211_registered_device *rdev;
8479 struct wireless_dev *wdev;
8480 struct net_device *dev;
8481 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8482
8483 if (rtnl)
8484 rtnl_lock();
8485
8486 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8487 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8488 if (IS_ERR(rdev)) {
8489 if (rtnl)
8490 rtnl_unlock();
8491 return PTR_ERR(rdev);
8492 }
8493 info->user_ptr[0] = rdev;
8494 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8495 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8496 mutex_lock(&cfg80211_mutex);
8497 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8498 info->attrs);
8499 if (IS_ERR(wdev)) {
8500 mutex_unlock(&cfg80211_mutex);
8501 if (rtnl)
8502 rtnl_unlock();
8503 return PTR_ERR(wdev);
8504 }
8505
8506 dev = wdev->netdev;
8507 rdev = wiphy_to_dev(wdev->wiphy);
8508
8509 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8510 if (!dev) {
8511 mutex_unlock(&cfg80211_mutex);
8512 if (rtnl)
8513 rtnl_unlock();
8514 return -EINVAL;
8515 }
8516
8517 info->user_ptr[1] = dev;
8518 } else {
8519 info->user_ptr[1] = wdev;
8520 }
8521
8522 if (dev) {
8523 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8524 !netif_running(dev)) {
8525 mutex_unlock(&cfg80211_mutex);
8526 if (rtnl)
8527 rtnl_unlock();
8528 return -ENETDOWN;
8529 }
8530
8531 dev_hold(dev);
8532 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8533 if (!wdev->p2p_started) {
8534 mutex_unlock(&cfg80211_mutex);
8535 if (rtnl)
8536 rtnl_unlock();
8537 return -ENETDOWN;
8538 }
8539 }
8540
8541 cfg80211_lock_rdev(rdev);
8542
8543 mutex_unlock(&cfg80211_mutex);
8544
8545 info->user_ptr[0] = rdev;
8546 }
8547
8548 return 0;
8549 }
8550
8551 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8552 struct genl_info *info)
8553 {
8554 if (info->user_ptr[0])
8555 cfg80211_unlock_rdev(info->user_ptr[0]);
8556 if (info->user_ptr[1]) {
8557 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8558 struct wireless_dev *wdev = info->user_ptr[1];
8559
8560 if (wdev->netdev)
8561 dev_put(wdev->netdev);
8562 } else {
8563 dev_put(info->user_ptr[1]);
8564 }
8565 }
8566 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8567 rtnl_unlock();
8568 }
8569
8570 static struct genl_ops nl80211_ops[] = {
8571 {
8572 .cmd = NL80211_CMD_GET_WIPHY,
8573 .doit = nl80211_get_wiphy,
8574 .dumpit = nl80211_dump_wiphy,
8575 .policy = nl80211_policy,
8576 /* can be retrieved by unprivileged users */
8577 .internal_flags = NL80211_FLAG_NEED_WIPHY,
8578 },
8579 {
8580 .cmd = NL80211_CMD_SET_WIPHY,
8581 .doit = nl80211_set_wiphy,
8582 .policy = nl80211_policy,
8583 .flags = GENL_ADMIN_PERM,
8584 .internal_flags = NL80211_FLAG_NEED_RTNL,
8585 },
8586 {
8587 .cmd = NL80211_CMD_GET_INTERFACE,
8588 .doit = nl80211_get_interface,
8589 .dumpit = nl80211_dump_interface,
8590 .policy = nl80211_policy,
8591 /* can be retrieved by unprivileged users */
8592 .internal_flags = NL80211_FLAG_NEED_WDEV,
8593 },
8594 {
8595 .cmd = NL80211_CMD_SET_INTERFACE,
8596 .doit = nl80211_set_interface,
8597 .policy = nl80211_policy,
8598 .flags = GENL_ADMIN_PERM,
8599 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8600 NL80211_FLAG_NEED_RTNL,
8601 },
8602 {
8603 .cmd = NL80211_CMD_NEW_INTERFACE,
8604 .doit = nl80211_new_interface,
8605 .policy = nl80211_policy,
8606 .flags = GENL_ADMIN_PERM,
8607 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8608 NL80211_FLAG_NEED_RTNL,
8609 },
8610 {
8611 .cmd = NL80211_CMD_DEL_INTERFACE,
8612 .doit = nl80211_del_interface,
8613 .policy = nl80211_policy,
8614 .flags = GENL_ADMIN_PERM,
8615 .internal_flags = NL80211_FLAG_NEED_WDEV |
8616 NL80211_FLAG_NEED_RTNL,
8617 },
8618 {
8619 .cmd = NL80211_CMD_GET_KEY,
8620 .doit = nl80211_get_key,
8621 .policy = nl80211_policy,
8622 .flags = GENL_ADMIN_PERM,
8623 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8624 NL80211_FLAG_NEED_RTNL,
8625 },
8626 {
8627 .cmd = NL80211_CMD_SET_KEY,
8628 .doit = nl80211_set_key,
8629 .policy = nl80211_policy,
8630 .flags = GENL_ADMIN_PERM,
8631 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8632 NL80211_FLAG_NEED_RTNL,
8633 },
8634 {
8635 .cmd = NL80211_CMD_NEW_KEY,
8636 .doit = nl80211_new_key,
8637 .policy = nl80211_policy,
8638 .flags = GENL_ADMIN_PERM,
8639 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8640 NL80211_FLAG_NEED_RTNL,
8641 },
8642 {
8643 .cmd = NL80211_CMD_DEL_KEY,
8644 .doit = nl80211_del_key,
8645 .policy = nl80211_policy,
8646 .flags = GENL_ADMIN_PERM,
8647 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8648 NL80211_FLAG_NEED_RTNL,
8649 },
8650 {
8651 .cmd = NL80211_CMD_SET_BEACON,
8652 .policy = nl80211_policy,
8653 .flags = GENL_ADMIN_PERM,
8654 .doit = nl80211_set_beacon,
8655 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8656 NL80211_FLAG_NEED_RTNL,
8657 },
8658 {
8659 .cmd = NL80211_CMD_START_AP,
8660 .policy = nl80211_policy,
8661 .flags = GENL_ADMIN_PERM,
8662 .doit = nl80211_start_ap,
8663 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8664 NL80211_FLAG_NEED_RTNL,
8665 },
8666 {
8667 .cmd = NL80211_CMD_STOP_AP,
8668 .policy = nl80211_policy,
8669 .flags = GENL_ADMIN_PERM,
8670 .doit = nl80211_stop_ap,
8671 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8672 NL80211_FLAG_NEED_RTNL,
8673 },
8674 {
8675 .cmd = NL80211_CMD_GET_STATION,
8676 .doit = nl80211_get_station,
8677 .dumpit = nl80211_dump_station,
8678 .policy = nl80211_policy,
8679 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8680 NL80211_FLAG_NEED_RTNL,
8681 },
8682 {
8683 .cmd = NL80211_CMD_SET_STATION,
8684 .doit = nl80211_set_station,
8685 .policy = nl80211_policy,
8686 .flags = GENL_ADMIN_PERM,
8687 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8688 NL80211_FLAG_NEED_RTNL,
8689 },
8690 {
8691 .cmd = NL80211_CMD_NEW_STATION,
8692 .doit = nl80211_new_station,
8693 .policy = nl80211_policy,
8694 .flags = GENL_ADMIN_PERM,
8695 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8696 NL80211_FLAG_NEED_RTNL,
8697 },
8698 {
8699 .cmd = NL80211_CMD_DEL_STATION,
8700 .doit = nl80211_del_station,
8701 .policy = nl80211_policy,
8702 .flags = GENL_ADMIN_PERM,
8703 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8704 NL80211_FLAG_NEED_RTNL,
8705 },
8706 {
8707 .cmd = NL80211_CMD_GET_MPATH,
8708 .doit = nl80211_get_mpath,
8709 .dumpit = nl80211_dump_mpath,
8710 .policy = nl80211_policy,
8711 .flags = GENL_ADMIN_PERM,
8712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8713 NL80211_FLAG_NEED_RTNL,
8714 },
8715 {
8716 .cmd = NL80211_CMD_SET_MPATH,
8717 .doit = nl80211_set_mpath,
8718 .policy = nl80211_policy,
8719 .flags = GENL_ADMIN_PERM,
8720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8721 NL80211_FLAG_NEED_RTNL,
8722 },
8723 {
8724 .cmd = NL80211_CMD_NEW_MPATH,
8725 .doit = nl80211_new_mpath,
8726 .policy = nl80211_policy,
8727 .flags = GENL_ADMIN_PERM,
8728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8729 NL80211_FLAG_NEED_RTNL,
8730 },
8731 {
8732 .cmd = NL80211_CMD_DEL_MPATH,
8733 .doit = nl80211_del_mpath,
8734 .policy = nl80211_policy,
8735 .flags = GENL_ADMIN_PERM,
8736 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8737 NL80211_FLAG_NEED_RTNL,
8738 },
8739 {
8740 .cmd = NL80211_CMD_SET_BSS,
8741 .doit = nl80211_set_bss,
8742 .policy = nl80211_policy,
8743 .flags = GENL_ADMIN_PERM,
8744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8745 NL80211_FLAG_NEED_RTNL,
8746 },
8747 {
8748 .cmd = NL80211_CMD_GET_REG,
8749 .doit = nl80211_get_reg,
8750 .policy = nl80211_policy,
8751 /* can be retrieved by unprivileged users */
8752 },
8753 {
8754 .cmd = NL80211_CMD_SET_REG,
8755 .doit = nl80211_set_reg,
8756 .policy = nl80211_policy,
8757 .flags = GENL_ADMIN_PERM,
8758 },
8759 {
8760 .cmd = NL80211_CMD_REQ_SET_REG,
8761 .doit = nl80211_req_set_reg,
8762 .policy = nl80211_policy,
8763 .flags = GENL_ADMIN_PERM,
8764 },
8765 {
8766 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8767 .doit = nl80211_get_mesh_config,
8768 .policy = nl80211_policy,
8769 /* can be retrieved by unprivileged users */
8770 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8771 NL80211_FLAG_NEED_RTNL,
8772 },
8773 {
8774 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8775 .doit = nl80211_update_mesh_config,
8776 .policy = nl80211_policy,
8777 .flags = GENL_ADMIN_PERM,
8778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8779 NL80211_FLAG_NEED_RTNL,
8780 },
8781 {
8782 .cmd = NL80211_CMD_TRIGGER_SCAN,
8783 .doit = nl80211_trigger_scan,
8784 .policy = nl80211_policy,
8785 .flags = GENL_ADMIN_PERM,
8786 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8787 NL80211_FLAG_NEED_RTNL,
8788 },
8789 {
8790 .cmd = NL80211_CMD_GET_SCAN,
8791 .policy = nl80211_policy,
8792 .dumpit = nl80211_dump_scan,
8793 },
8794 {
8795 .cmd = NL80211_CMD_START_SCHED_SCAN,
8796 .doit = nl80211_start_sched_scan,
8797 .policy = nl80211_policy,
8798 .flags = GENL_ADMIN_PERM,
8799 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8800 NL80211_FLAG_NEED_RTNL,
8801 },
8802 {
8803 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8804 .doit = nl80211_stop_sched_scan,
8805 .policy = nl80211_policy,
8806 .flags = GENL_ADMIN_PERM,
8807 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8808 NL80211_FLAG_NEED_RTNL,
8809 },
8810 {
8811 .cmd = NL80211_CMD_AUTHENTICATE,
8812 .doit = nl80211_authenticate,
8813 .policy = nl80211_policy,
8814 .flags = GENL_ADMIN_PERM,
8815 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8816 NL80211_FLAG_NEED_RTNL,
8817 },
8818 {
8819 .cmd = NL80211_CMD_ASSOCIATE,
8820 .doit = nl80211_associate,
8821 .policy = nl80211_policy,
8822 .flags = GENL_ADMIN_PERM,
8823 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8824 NL80211_FLAG_NEED_RTNL,
8825 },
8826 {
8827 .cmd = NL80211_CMD_DEAUTHENTICATE,
8828 .doit = nl80211_deauthenticate,
8829 .policy = nl80211_policy,
8830 .flags = GENL_ADMIN_PERM,
8831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8832 NL80211_FLAG_NEED_RTNL,
8833 },
8834 {
8835 .cmd = NL80211_CMD_DISASSOCIATE,
8836 .doit = nl80211_disassociate,
8837 .policy = nl80211_policy,
8838 .flags = GENL_ADMIN_PERM,
8839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8840 NL80211_FLAG_NEED_RTNL,
8841 },
8842 {
8843 .cmd = NL80211_CMD_JOIN_IBSS,
8844 .doit = nl80211_join_ibss,
8845 .policy = nl80211_policy,
8846 .flags = GENL_ADMIN_PERM,
8847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8848 NL80211_FLAG_NEED_RTNL,
8849 },
8850 {
8851 .cmd = NL80211_CMD_LEAVE_IBSS,
8852 .doit = nl80211_leave_ibss,
8853 .policy = nl80211_policy,
8854 .flags = GENL_ADMIN_PERM,
8855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8856 NL80211_FLAG_NEED_RTNL,
8857 },
8858 #ifdef CONFIG_NL80211_TESTMODE
8859 {
8860 .cmd = NL80211_CMD_TESTMODE,
8861 .doit = nl80211_testmode_do,
8862 .dumpit = nl80211_testmode_dump,
8863 .policy = nl80211_policy,
8864 .flags = GENL_ADMIN_PERM,
8865 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8866 NL80211_FLAG_NEED_RTNL,
8867 },
8868 #endif
8869 {
8870 .cmd = NL80211_CMD_CONNECT,
8871 .doit = nl80211_connect,
8872 .policy = nl80211_policy,
8873 .flags = GENL_ADMIN_PERM,
8874 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8875 NL80211_FLAG_NEED_RTNL,
8876 },
8877 {
8878 .cmd = NL80211_CMD_DISCONNECT,
8879 .doit = nl80211_disconnect,
8880 .policy = nl80211_policy,
8881 .flags = GENL_ADMIN_PERM,
8882 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8883 NL80211_FLAG_NEED_RTNL,
8884 },
8885 {
8886 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8887 .doit = nl80211_wiphy_netns,
8888 .policy = nl80211_policy,
8889 .flags = GENL_ADMIN_PERM,
8890 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8891 NL80211_FLAG_NEED_RTNL,
8892 },
8893 {
8894 .cmd = NL80211_CMD_GET_SURVEY,
8895 .policy = nl80211_policy,
8896 .dumpit = nl80211_dump_survey,
8897 },
8898 {
8899 .cmd = NL80211_CMD_SET_PMKSA,
8900 .doit = nl80211_setdel_pmksa,
8901 .policy = nl80211_policy,
8902 .flags = GENL_ADMIN_PERM,
8903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8904 NL80211_FLAG_NEED_RTNL,
8905 },
8906 {
8907 .cmd = NL80211_CMD_DEL_PMKSA,
8908 .doit = nl80211_setdel_pmksa,
8909 .policy = nl80211_policy,
8910 .flags = GENL_ADMIN_PERM,
8911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8912 NL80211_FLAG_NEED_RTNL,
8913 },
8914 {
8915 .cmd = NL80211_CMD_FLUSH_PMKSA,
8916 .doit = nl80211_flush_pmksa,
8917 .policy = nl80211_policy,
8918 .flags = GENL_ADMIN_PERM,
8919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8920 NL80211_FLAG_NEED_RTNL,
8921 },
8922 {
8923 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8924 .doit = nl80211_remain_on_channel,
8925 .policy = nl80211_policy,
8926 .flags = GENL_ADMIN_PERM,
8927 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8928 NL80211_FLAG_NEED_RTNL,
8929 },
8930 {
8931 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8932 .doit = nl80211_cancel_remain_on_channel,
8933 .policy = nl80211_policy,
8934 .flags = GENL_ADMIN_PERM,
8935 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8936 NL80211_FLAG_NEED_RTNL,
8937 },
8938 {
8939 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8940 .doit = nl80211_set_tx_bitrate_mask,
8941 .policy = nl80211_policy,
8942 .flags = GENL_ADMIN_PERM,
8943 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8944 NL80211_FLAG_NEED_RTNL,
8945 },
8946 {
8947 .cmd = NL80211_CMD_REGISTER_FRAME,
8948 .doit = nl80211_register_mgmt,
8949 .policy = nl80211_policy,
8950 .flags = GENL_ADMIN_PERM,
8951 .internal_flags = NL80211_FLAG_NEED_WDEV |
8952 NL80211_FLAG_NEED_RTNL,
8953 },
8954 {
8955 .cmd = NL80211_CMD_FRAME,
8956 .doit = nl80211_tx_mgmt,
8957 .policy = nl80211_policy,
8958 .flags = GENL_ADMIN_PERM,
8959 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8960 NL80211_FLAG_NEED_RTNL,
8961 },
8962 {
8963 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8964 .doit = nl80211_tx_mgmt_cancel_wait,
8965 .policy = nl80211_policy,
8966 .flags = GENL_ADMIN_PERM,
8967 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8968 NL80211_FLAG_NEED_RTNL,
8969 },
8970 {
8971 .cmd = NL80211_CMD_SET_POWER_SAVE,
8972 .doit = nl80211_set_power_save,
8973 .policy = nl80211_policy,
8974 .flags = GENL_ADMIN_PERM,
8975 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8976 NL80211_FLAG_NEED_RTNL,
8977 },
8978 {
8979 .cmd = NL80211_CMD_GET_POWER_SAVE,
8980 .doit = nl80211_get_power_save,
8981 .policy = nl80211_policy,
8982 /* can be retrieved by unprivileged users */
8983 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8984 NL80211_FLAG_NEED_RTNL,
8985 },
8986 {
8987 .cmd = NL80211_CMD_SET_CQM,
8988 .doit = nl80211_set_cqm,
8989 .policy = nl80211_policy,
8990 .flags = GENL_ADMIN_PERM,
8991 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8992 NL80211_FLAG_NEED_RTNL,
8993 },
8994 {
8995 .cmd = NL80211_CMD_SET_CHANNEL,
8996 .doit = nl80211_set_channel,
8997 .policy = nl80211_policy,
8998 .flags = GENL_ADMIN_PERM,
8999 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9000 NL80211_FLAG_NEED_RTNL,
9001 },
9002 {
9003 .cmd = NL80211_CMD_SET_WDS_PEER,
9004 .doit = nl80211_set_wds_peer,
9005 .policy = nl80211_policy,
9006 .flags = GENL_ADMIN_PERM,
9007 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9008 NL80211_FLAG_NEED_RTNL,
9009 },
9010 {
9011 .cmd = NL80211_CMD_JOIN_MESH,
9012 .doit = nl80211_join_mesh,
9013 .policy = nl80211_policy,
9014 .flags = GENL_ADMIN_PERM,
9015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9016 NL80211_FLAG_NEED_RTNL,
9017 },
9018 {
9019 .cmd = NL80211_CMD_LEAVE_MESH,
9020 .doit = nl80211_leave_mesh,
9021 .policy = nl80211_policy,
9022 .flags = GENL_ADMIN_PERM,
9023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9024 NL80211_FLAG_NEED_RTNL,
9025 },
9026 #ifdef CONFIG_PM
9027 {
9028 .cmd = NL80211_CMD_GET_WOWLAN,
9029 .doit = nl80211_get_wowlan,
9030 .policy = nl80211_policy,
9031 /* can be retrieved by unprivileged users */
9032 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9033 NL80211_FLAG_NEED_RTNL,
9034 },
9035 {
9036 .cmd = NL80211_CMD_SET_WOWLAN,
9037 .doit = nl80211_set_wowlan,
9038 .policy = nl80211_policy,
9039 .flags = GENL_ADMIN_PERM,
9040 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9041 NL80211_FLAG_NEED_RTNL,
9042 },
9043 #endif
9044 {
9045 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9046 .doit = nl80211_set_rekey_data,
9047 .policy = nl80211_policy,
9048 .flags = GENL_ADMIN_PERM,
9049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9050 NL80211_FLAG_NEED_RTNL,
9051 },
9052 {
9053 .cmd = NL80211_CMD_TDLS_MGMT,
9054 .doit = nl80211_tdls_mgmt,
9055 .policy = nl80211_policy,
9056 .flags = GENL_ADMIN_PERM,
9057 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9058 NL80211_FLAG_NEED_RTNL,
9059 },
9060 {
9061 .cmd = NL80211_CMD_TDLS_OPER,
9062 .doit = nl80211_tdls_oper,
9063 .policy = nl80211_policy,
9064 .flags = GENL_ADMIN_PERM,
9065 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9066 NL80211_FLAG_NEED_RTNL,
9067 },
9068 {
9069 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9070 .doit = nl80211_register_unexpected_frame,
9071 .policy = nl80211_policy,
9072 .flags = GENL_ADMIN_PERM,
9073 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9074 NL80211_FLAG_NEED_RTNL,
9075 },
9076 {
9077 .cmd = NL80211_CMD_PROBE_CLIENT,
9078 .doit = nl80211_probe_client,
9079 .policy = nl80211_policy,
9080 .flags = GENL_ADMIN_PERM,
9081 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9082 NL80211_FLAG_NEED_RTNL,
9083 },
9084 {
9085 .cmd = NL80211_CMD_REGISTER_BEACONS,
9086 .doit = nl80211_register_beacons,
9087 .policy = nl80211_policy,
9088 .flags = GENL_ADMIN_PERM,
9089 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9090 NL80211_FLAG_NEED_RTNL,
9091 },
9092 {
9093 .cmd = NL80211_CMD_SET_NOACK_MAP,
9094 .doit = nl80211_set_noack_map,
9095 .policy = nl80211_policy,
9096 .flags = GENL_ADMIN_PERM,
9097 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9098 NL80211_FLAG_NEED_RTNL,
9099 },
9100 {
9101 .cmd = NL80211_CMD_START_P2P_DEVICE,
9102 .doit = nl80211_start_p2p_device,
9103 .policy = nl80211_policy,
9104 .flags = GENL_ADMIN_PERM,
9105 .internal_flags = NL80211_FLAG_NEED_WDEV |
9106 NL80211_FLAG_NEED_RTNL,
9107 },
9108 {
9109 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9110 .doit = nl80211_stop_p2p_device,
9111 .policy = nl80211_policy,
9112 .flags = GENL_ADMIN_PERM,
9113 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9114 NL80211_FLAG_NEED_RTNL,
9115 },
9116 {
9117 .cmd = NL80211_CMD_SET_MCAST_RATE,
9118 .doit = nl80211_set_mcast_rate,
9119 .policy = nl80211_policy,
9120 .flags = GENL_ADMIN_PERM,
9121 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9122 NL80211_FLAG_NEED_RTNL,
9123 },
9124 {
9125 .cmd = NL80211_CMD_SET_MAC_ACL,
9126 .doit = nl80211_set_mac_acl,
9127 .policy = nl80211_policy,
9128 .flags = GENL_ADMIN_PERM,
9129 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9130 NL80211_FLAG_NEED_RTNL,
9131 },
9132 {
9133 .cmd = NL80211_CMD_RADAR_DETECT,
9134 .doit = nl80211_start_radar_detection,
9135 .policy = nl80211_policy,
9136 .flags = GENL_ADMIN_PERM,
9137 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9138 NL80211_FLAG_NEED_RTNL,
9139 },
9140 {
9141 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9142 .doit = nl80211_get_protocol_features,
9143 .policy = nl80211_policy,
9144 },
9145 {
9146 .cmd = NL80211_CMD_UPDATE_FT_IES,
9147 .doit = nl80211_update_ft_ies,
9148 .policy = nl80211_policy,
9149 .flags = GENL_ADMIN_PERM,
9150 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9151 NL80211_FLAG_NEED_RTNL,
9152 },
9153 {
9154 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9155 .doit = nl80211_crit_protocol_start,
9156 .policy = nl80211_policy,
9157 .flags = GENL_ADMIN_PERM,
9158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9159 NL80211_FLAG_NEED_RTNL,
9160 },
9161 {
9162 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9163 .doit = nl80211_crit_protocol_stop,
9164 .policy = nl80211_policy,
9165 .flags = GENL_ADMIN_PERM,
9166 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9167 NL80211_FLAG_NEED_RTNL,
9168 },
9169 {
9170 .cmd = NL80211_CMD_VENDOR,
9171 .doit = nl80211_vendor_cmd,
9172 .policy = nl80211_policy,
9173 .flags = GENL_ADMIN_PERM,
9174 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9175 NL80211_FLAG_NEED_RTNL,
9176 },
9177 };
9178
9179 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9180 .name = "mlme",
9181 };
9182
9183 /* multicast groups */
9184 static struct genl_multicast_group nl80211_config_mcgrp = {
9185 .name = "config",
9186 };
9187 static struct genl_multicast_group nl80211_scan_mcgrp = {
9188 .name = "scan",
9189 };
9190 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9191 .name = "regulatory",
9192 };
9193
9194 /* notification functions */
9195
9196 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9197 {
9198 struct sk_buff *msg;
9199
9200 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9201 if (!msg)
9202 return;
9203
9204 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
9205 false, NULL, NULL, NULL) < 0) {
9206 nlmsg_free(msg);
9207 return;
9208 }
9209
9210 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9211 nl80211_config_mcgrp.id, GFP_KERNEL);
9212 }
9213
9214 static int nl80211_add_scan_req(struct sk_buff *msg,
9215 struct cfg80211_registered_device *rdev)
9216 {
9217 struct cfg80211_scan_request *req = rdev->scan_req;
9218 struct nlattr *nest;
9219 int i;
9220
9221 lockdep_assert_held(&rdev->sched_scan_mtx);
9222
9223 if (WARN_ON(!req))
9224 return 0;
9225
9226 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9227 if (!nest)
9228 goto nla_put_failure;
9229 for (i = 0; i < req->n_ssids; i++) {
9230 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9231 goto nla_put_failure;
9232 }
9233 nla_nest_end(msg, nest);
9234
9235 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9236 if (!nest)
9237 goto nla_put_failure;
9238 for (i = 0; i < req->n_channels; i++) {
9239 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9240 goto nla_put_failure;
9241 }
9242 nla_nest_end(msg, nest);
9243
9244 if (req->ie &&
9245 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9246 goto nla_put_failure;
9247
9248 if (req->flags)
9249 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9250
9251 return 0;
9252 nla_put_failure:
9253 return -ENOBUFS;
9254 }
9255
9256 static int nl80211_send_scan_msg(struct sk_buff *msg,
9257 struct cfg80211_registered_device *rdev,
9258 struct wireless_dev *wdev,
9259 u32 portid, u32 seq, int flags,
9260 u32 cmd)
9261 {
9262 void *hdr;
9263
9264 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9265 if (!hdr)
9266 return -1;
9267
9268 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9269 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9270 wdev->netdev->ifindex)) ||
9271 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9272 goto nla_put_failure;
9273
9274 /* ignore errors and send incomplete event anyway */
9275 nl80211_add_scan_req(msg, rdev);
9276
9277 return genlmsg_end(msg, hdr);
9278
9279 nla_put_failure:
9280 genlmsg_cancel(msg, hdr);
9281 return -EMSGSIZE;
9282 }
9283
9284 static int
9285 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9286 struct cfg80211_registered_device *rdev,
9287 struct net_device *netdev,
9288 u32 portid, u32 seq, int flags, u32 cmd)
9289 {
9290 void *hdr;
9291
9292 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9293 if (!hdr)
9294 return -1;
9295
9296 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9297 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9298 goto nla_put_failure;
9299
9300 return genlmsg_end(msg, hdr);
9301
9302 nla_put_failure:
9303 genlmsg_cancel(msg, hdr);
9304 return -EMSGSIZE;
9305 }
9306
9307 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9308 struct wireless_dev *wdev)
9309 {
9310 struct sk_buff *msg;
9311
9312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9313 if (!msg)
9314 return;
9315
9316 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9317 NL80211_CMD_TRIGGER_SCAN) < 0) {
9318 nlmsg_free(msg);
9319 return;
9320 }
9321
9322 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9323 nl80211_scan_mcgrp.id, GFP_KERNEL);
9324 }
9325
9326 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9327 struct wireless_dev *wdev)
9328 {
9329 struct sk_buff *msg;
9330
9331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9332 if (!msg)
9333 return;
9334
9335 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9336 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9337 nlmsg_free(msg);
9338 return;
9339 }
9340
9341 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9342 nl80211_scan_mcgrp.id, GFP_KERNEL);
9343 }
9344
9345 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9346 struct wireless_dev *wdev)
9347 {
9348 struct sk_buff *msg;
9349
9350 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9351 if (!msg)
9352 return;
9353
9354 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9355 NL80211_CMD_SCAN_ABORTED) < 0) {
9356 nlmsg_free(msg);
9357 return;
9358 }
9359
9360 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9361 nl80211_scan_mcgrp.id, GFP_KERNEL);
9362 }
9363
9364 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9365 struct net_device *netdev)
9366 {
9367 struct sk_buff *msg;
9368
9369 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9370 if (!msg)
9371 return;
9372
9373 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9374 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9375 nlmsg_free(msg);
9376 return;
9377 }
9378
9379 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9380 nl80211_scan_mcgrp.id, GFP_KERNEL);
9381 }
9382
9383 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9384 struct net_device *netdev, u32 cmd)
9385 {
9386 struct sk_buff *msg;
9387
9388 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9389 if (!msg)
9390 return;
9391
9392 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9393 nlmsg_free(msg);
9394 return;
9395 }
9396
9397 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9398 nl80211_scan_mcgrp.id, GFP_KERNEL);
9399 }
9400
9401 /*
9402 * This can happen on global regulatory changes or device specific settings
9403 * based on custom world regulatory domains.
9404 */
9405 void nl80211_send_reg_change_event(struct regulatory_request *request)
9406 {
9407 struct sk_buff *msg;
9408 void *hdr;
9409
9410 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9411 if (!msg)
9412 return;
9413
9414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9415 if (!hdr) {
9416 nlmsg_free(msg);
9417 return;
9418 }
9419
9420 /* Userspace can always count this one always being set */
9421 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9422 goto nla_put_failure;
9423
9424 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9425 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9426 NL80211_REGDOM_TYPE_WORLD))
9427 goto nla_put_failure;
9428 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9429 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9430 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9431 goto nla_put_failure;
9432 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9433 request->intersect) {
9434 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9435 NL80211_REGDOM_TYPE_INTERSECTION))
9436 goto nla_put_failure;
9437 } else {
9438 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9439 NL80211_REGDOM_TYPE_COUNTRY) ||
9440 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9441 request->alpha2))
9442 goto nla_put_failure;
9443 }
9444
9445 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9446 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9447 goto nla_put_failure;
9448
9449 genlmsg_end(msg, hdr);
9450
9451 rcu_read_lock();
9452 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9453 GFP_ATOMIC);
9454 rcu_read_unlock();
9455
9456 return;
9457
9458 nla_put_failure:
9459 genlmsg_cancel(msg, hdr);
9460 nlmsg_free(msg);
9461 }
9462
9463 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9464 struct net_device *netdev,
9465 const u8 *buf, size_t len,
9466 enum nl80211_commands cmd, gfp_t gfp)
9467 {
9468 struct sk_buff *msg;
9469 void *hdr;
9470
9471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9472 if (!msg)
9473 return;
9474
9475 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9476 if (!hdr) {
9477 nlmsg_free(msg);
9478 return;
9479 }
9480
9481 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9482 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9483 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9484 goto nla_put_failure;
9485
9486 genlmsg_end(msg, hdr);
9487
9488 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9489 nl80211_mlme_mcgrp.id, gfp);
9490 return;
9491
9492 nla_put_failure:
9493 genlmsg_cancel(msg, hdr);
9494 nlmsg_free(msg);
9495 }
9496
9497 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9498 struct net_device *netdev, const u8 *buf,
9499 size_t len, gfp_t gfp)
9500 {
9501 nl80211_send_mlme_event(rdev, netdev, buf, len,
9502 NL80211_CMD_AUTHENTICATE, gfp);
9503 }
9504
9505 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9506 struct net_device *netdev, const u8 *buf,
9507 size_t len, gfp_t gfp)
9508 {
9509 nl80211_send_mlme_event(rdev, netdev, buf, len,
9510 NL80211_CMD_ASSOCIATE, gfp);
9511 }
9512
9513 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9514 struct net_device *netdev, const u8 *buf,
9515 size_t len, gfp_t gfp)
9516 {
9517 nl80211_send_mlme_event(rdev, netdev, buf, len,
9518 NL80211_CMD_DEAUTHENTICATE, gfp);
9519 }
9520
9521 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9522 struct net_device *netdev, const u8 *buf,
9523 size_t len, gfp_t gfp)
9524 {
9525 nl80211_send_mlme_event(rdev, netdev, buf, len,
9526 NL80211_CMD_DISASSOCIATE, gfp);
9527 }
9528
9529 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9530 size_t len)
9531 {
9532 struct wireless_dev *wdev = dev->ieee80211_ptr;
9533 struct wiphy *wiphy = wdev->wiphy;
9534 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9535
9536 trace_cfg80211_send_unprot_deauth(dev);
9537 nl80211_send_mlme_event(rdev, dev, buf, len,
9538 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9539 }
9540 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9541
9542 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9543 size_t len)
9544 {
9545 struct wireless_dev *wdev = dev->ieee80211_ptr;
9546 struct wiphy *wiphy = wdev->wiphy;
9547 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9548
9549 trace_cfg80211_send_unprot_disassoc(dev);
9550 nl80211_send_mlme_event(rdev, dev, buf, len,
9551 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9552 }
9553 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9554
9555 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9556 struct net_device *netdev, int cmd,
9557 const u8 *addr, gfp_t gfp)
9558 {
9559 struct sk_buff *msg;
9560 void *hdr;
9561
9562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9563 if (!msg)
9564 return;
9565
9566 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9567 if (!hdr) {
9568 nlmsg_free(msg);
9569 return;
9570 }
9571
9572 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9573 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9574 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9575 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9576 goto nla_put_failure;
9577
9578 genlmsg_end(msg, hdr);
9579
9580 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9581 nl80211_mlme_mcgrp.id, gfp);
9582 return;
9583
9584 nla_put_failure:
9585 genlmsg_cancel(msg, hdr);
9586 nlmsg_free(msg);
9587 }
9588
9589 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9590 struct net_device *netdev, const u8 *addr,
9591 gfp_t gfp)
9592 {
9593 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9594 addr, gfp);
9595 }
9596
9597 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9598 struct net_device *netdev, const u8 *addr,
9599 gfp_t gfp)
9600 {
9601 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9602 addr, gfp);
9603 }
9604
9605 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9606 struct net_device *netdev, const u8 *bssid,
9607 const u8 *req_ie, size_t req_ie_len,
9608 const u8 *resp_ie, size_t resp_ie_len,
9609 u16 status, gfp_t gfp)
9610 {
9611 struct sk_buff *msg;
9612 void *hdr;
9613
9614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9615 if (!msg)
9616 return;
9617
9618 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9619 if (!hdr) {
9620 nlmsg_free(msg);
9621 return;
9622 }
9623
9624 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9625 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9626 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9627 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9628 (req_ie &&
9629 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9630 (resp_ie &&
9631 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9632 goto nla_put_failure;
9633
9634 genlmsg_end(msg, hdr);
9635
9636 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9637 nl80211_mlme_mcgrp.id, gfp);
9638 return;
9639
9640 nla_put_failure:
9641 genlmsg_cancel(msg, hdr);
9642 nlmsg_free(msg);
9643
9644 }
9645
9646 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9647 struct net_device *netdev, const u8 *bssid,
9648 const u8 *req_ie, size_t req_ie_len,
9649 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9650 {
9651 struct sk_buff *msg;
9652 void *hdr;
9653
9654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9655 if (!msg)
9656 return;
9657
9658 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9659 if (!hdr) {
9660 nlmsg_free(msg);
9661 return;
9662 }
9663
9664 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9665 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9666 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9667 (req_ie &&
9668 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9669 (resp_ie &&
9670 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9671 goto nla_put_failure;
9672
9673 genlmsg_end(msg, hdr);
9674
9675 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9676 nl80211_mlme_mcgrp.id, gfp);
9677 return;
9678
9679 nla_put_failure:
9680 genlmsg_cancel(msg, hdr);
9681 nlmsg_free(msg);
9682
9683 }
9684
9685 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9686 struct net_device *netdev, u16 reason,
9687 const u8 *ie, size_t ie_len, bool from_ap)
9688 {
9689 struct sk_buff *msg;
9690 void *hdr;
9691
9692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9693 if (!msg)
9694 return;
9695
9696 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9697 if (!hdr) {
9698 nlmsg_free(msg);
9699 return;
9700 }
9701
9702 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9703 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9704 (from_ap && reason &&
9705 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9706 (from_ap &&
9707 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9708 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9709 goto nla_put_failure;
9710
9711 genlmsg_end(msg, hdr);
9712
9713 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9714 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9715 return;
9716
9717 nla_put_failure:
9718 genlmsg_cancel(msg, hdr);
9719 nlmsg_free(msg);
9720
9721 }
9722
9723 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9724 struct net_device *netdev, const u8 *bssid,
9725 gfp_t gfp)
9726 {
9727 struct sk_buff *msg;
9728 void *hdr;
9729
9730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9731 if (!msg)
9732 return;
9733
9734 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9735 if (!hdr) {
9736 nlmsg_free(msg);
9737 return;
9738 }
9739
9740 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9741 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9742 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9743 goto nla_put_failure;
9744
9745 genlmsg_end(msg, hdr);
9746
9747 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9748 nl80211_mlme_mcgrp.id, gfp);
9749 return;
9750
9751 nla_put_failure:
9752 genlmsg_cancel(msg, hdr);
9753 nlmsg_free(msg);
9754 }
9755
9756 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9757 const u8* ie, u8 ie_len, gfp_t gfp)
9758 {
9759 struct wireless_dev *wdev = dev->ieee80211_ptr;
9760 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9761 struct sk_buff *msg;
9762 void *hdr;
9763
9764 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9765 return;
9766
9767 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9768
9769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9770 if (!msg)
9771 return;
9772
9773 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9774 if (!hdr) {
9775 nlmsg_free(msg);
9776 return;
9777 }
9778
9779 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9780 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9781 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9782 (ie_len && ie &&
9783 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9784 goto nla_put_failure;
9785
9786 genlmsg_end(msg, hdr);
9787
9788 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9789 nl80211_mlme_mcgrp.id, gfp);
9790 return;
9791
9792 nla_put_failure:
9793 genlmsg_cancel(msg, hdr);
9794 nlmsg_free(msg);
9795 }
9796 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9797
9798 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9799 struct net_device *netdev, const u8 *addr,
9800 enum nl80211_key_type key_type, int key_id,
9801 const u8 *tsc, gfp_t gfp)
9802 {
9803 struct sk_buff *msg;
9804 void *hdr;
9805
9806 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9807 if (!msg)
9808 return;
9809
9810 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9811 if (!hdr) {
9812 nlmsg_free(msg);
9813 return;
9814 }
9815
9816 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9817 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9818 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9819 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9820 (key_id != -1 &&
9821 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9822 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9823 goto nla_put_failure;
9824
9825 genlmsg_end(msg, hdr);
9826
9827 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9828 nl80211_mlme_mcgrp.id, gfp);
9829 return;
9830
9831 nla_put_failure:
9832 genlmsg_cancel(msg, hdr);
9833 nlmsg_free(msg);
9834 }
9835
9836 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9837 struct ieee80211_channel *channel_before,
9838 struct ieee80211_channel *channel_after)
9839 {
9840 struct sk_buff *msg;
9841 void *hdr;
9842 struct nlattr *nl_freq;
9843
9844 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9845 if (!msg)
9846 return;
9847
9848 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9849 if (!hdr) {
9850 nlmsg_free(msg);
9851 return;
9852 }
9853
9854 /*
9855 * Since we are applying the beacon hint to a wiphy we know its
9856 * wiphy_idx is valid
9857 */
9858 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9859 goto nla_put_failure;
9860
9861 /* Before */
9862 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9863 if (!nl_freq)
9864 goto nla_put_failure;
9865 if (nl80211_msg_put_channel(msg, channel_before, false))
9866 goto nla_put_failure;
9867 nla_nest_end(msg, nl_freq);
9868
9869 /* After */
9870 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9871 if (!nl_freq)
9872 goto nla_put_failure;
9873 if (nl80211_msg_put_channel(msg, channel_after, false))
9874 goto nla_put_failure;
9875 nla_nest_end(msg, nl_freq);
9876
9877 genlmsg_end(msg, hdr);
9878
9879 rcu_read_lock();
9880 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9881 GFP_ATOMIC);
9882 rcu_read_unlock();
9883
9884 return;
9885
9886 nla_put_failure:
9887 genlmsg_cancel(msg, hdr);
9888 nlmsg_free(msg);
9889 }
9890
9891 static void nl80211_send_remain_on_chan_event(
9892 int cmd, struct cfg80211_registered_device *rdev,
9893 struct wireless_dev *wdev, u64 cookie,
9894 struct ieee80211_channel *chan,
9895 unsigned int duration, gfp_t gfp)
9896 {
9897 struct sk_buff *msg;
9898 void *hdr;
9899
9900 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9901 if (!msg)
9902 return;
9903
9904 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9905 if (!hdr) {
9906 nlmsg_free(msg);
9907 return;
9908 }
9909
9910 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9911 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9912 wdev->netdev->ifindex)) ||
9913 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9914 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9915 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9916 NL80211_CHAN_NO_HT) ||
9917 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9918 goto nla_put_failure;
9919
9920 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9921 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9922 goto nla_put_failure;
9923
9924 genlmsg_end(msg, hdr);
9925
9926 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9927 nl80211_mlme_mcgrp.id, gfp);
9928 return;
9929
9930 nla_put_failure:
9931 genlmsg_cancel(msg, hdr);
9932 nlmsg_free(msg);
9933 }
9934
9935 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9936 struct ieee80211_channel *chan,
9937 unsigned int duration, gfp_t gfp)
9938 {
9939 struct wiphy *wiphy = wdev->wiphy;
9940 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9941
9942 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9943 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9944 rdev, wdev, cookie, chan,
9945 duration, gfp);
9946 }
9947 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9948
9949 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9950 struct ieee80211_channel *chan,
9951 gfp_t gfp)
9952 {
9953 struct wiphy *wiphy = wdev->wiphy;
9954 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9955
9956 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9957 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9958 rdev, wdev, cookie, chan, 0, gfp);
9959 }
9960 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9961
9962 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9963 struct station_info *sinfo, gfp_t gfp)
9964 {
9965 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9966 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9967 struct sk_buff *msg;
9968
9969 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9970
9971 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9972 if (!msg)
9973 return;
9974
9975 if (nl80211_send_station(msg, 0, 0, 0,
9976 rdev, dev, mac_addr, sinfo) < 0) {
9977 nlmsg_free(msg);
9978 return;
9979 }
9980
9981 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9982 nl80211_mlme_mcgrp.id, gfp);
9983 }
9984 EXPORT_SYMBOL(cfg80211_new_sta);
9985
9986 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9987 {
9988 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9989 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9990 struct sk_buff *msg;
9991 void *hdr;
9992
9993 trace_cfg80211_del_sta(dev, mac_addr);
9994
9995 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9996 if (!msg)
9997 return;
9998
9999 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10000 if (!hdr) {
10001 nlmsg_free(msg);
10002 return;
10003 }
10004
10005 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10006 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10007 goto nla_put_failure;
10008
10009 genlmsg_end(msg, hdr);
10010
10011 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10012 nl80211_mlme_mcgrp.id, gfp);
10013 return;
10014
10015 nla_put_failure:
10016 genlmsg_cancel(msg, hdr);
10017 nlmsg_free(msg);
10018 }
10019 EXPORT_SYMBOL(cfg80211_del_sta);
10020
10021 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10022 enum nl80211_connect_failed_reason reason,
10023 gfp_t gfp)
10024 {
10025 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10026 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10027 struct sk_buff *msg;
10028 void *hdr;
10029
10030 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10031 if (!msg)
10032 return;
10033
10034 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10035 if (!hdr) {
10036 nlmsg_free(msg);
10037 return;
10038 }
10039
10040 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10041 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10042 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10043 goto nla_put_failure;
10044
10045 genlmsg_end(msg, hdr);
10046
10047 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10048 nl80211_mlme_mcgrp.id, gfp);
10049 return;
10050
10051 nla_put_failure:
10052 genlmsg_cancel(msg, hdr);
10053 nlmsg_free(msg);
10054 }
10055 EXPORT_SYMBOL(cfg80211_conn_failed);
10056
10057 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10058 const u8 *addr, gfp_t gfp)
10059 {
10060 struct wireless_dev *wdev = dev->ieee80211_ptr;
10061 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10062 struct sk_buff *msg;
10063 void *hdr;
10064 int err;
10065 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10066
10067 if (!nlportid)
10068 return false;
10069
10070 msg = nlmsg_new(100, gfp);
10071 if (!msg)
10072 return true;
10073
10074 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10075 if (!hdr) {
10076 nlmsg_free(msg);
10077 return true;
10078 }
10079
10080 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10081 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10082 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10083 goto nla_put_failure;
10084
10085 err = genlmsg_end(msg, hdr);
10086 if (err < 0) {
10087 nlmsg_free(msg);
10088 return true;
10089 }
10090
10091 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10092 return true;
10093
10094 nla_put_failure:
10095 genlmsg_cancel(msg, hdr);
10096 nlmsg_free(msg);
10097 return true;
10098 }
10099
10100 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10101 const u8 *addr, gfp_t gfp)
10102 {
10103 struct wireless_dev *wdev = dev->ieee80211_ptr;
10104 bool ret;
10105
10106 trace_cfg80211_rx_spurious_frame(dev, addr);
10107
10108 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10109 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10110 trace_cfg80211_return_bool(false);
10111 return false;
10112 }
10113 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10114 addr, gfp);
10115 trace_cfg80211_return_bool(ret);
10116 return ret;
10117 }
10118 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10119
10120 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10121 const u8 *addr, gfp_t gfp)
10122 {
10123 struct wireless_dev *wdev = dev->ieee80211_ptr;
10124 bool ret;
10125
10126 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10127
10128 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10129 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10130 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10131 trace_cfg80211_return_bool(false);
10132 return false;
10133 }
10134 ret = __nl80211_unexpected_frame(dev,
10135 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10136 addr, gfp);
10137 trace_cfg80211_return_bool(ret);
10138 return ret;
10139 }
10140 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10141
10142 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10143 struct wireless_dev *wdev, u32 nlportid,
10144 int freq, int sig_dbm,
10145 const u8 *buf, size_t len, gfp_t gfp)
10146 {
10147 struct net_device *netdev = wdev->netdev;
10148 struct sk_buff *msg;
10149 void *hdr;
10150
10151 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10152 if (!msg)
10153 return -ENOMEM;
10154
10155 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10156 if (!hdr) {
10157 nlmsg_free(msg);
10158 return -ENOMEM;
10159 }
10160
10161 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10162 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10163 netdev->ifindex)) ||
10164 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10165 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10166 (sig_dbm &&
10167 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10168 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10169 goto nla_put_failure;
10170
10171 genlmsg_end(msg, hdr);
10172
10173 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10174
10175 nla_put_failure:
10176 genlmsg_cancel(msg, hdr);
10177 nlmsg_free(msg);
10178 return -ENOBUFS;
10179 }
10180
10181 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10182 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10183 {
10184 struct wiphy *wiphy = wdev->wiphy;
10185 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10186 struct net_device *netdev = wdev->netdev;
10187 struct sk_buff *msg;
10188 void *hdr;
10189
10190 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10191
10192 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10193 if (!msg)
10194 return;
10195
10196 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10197 if (!hdr) {
10198 nlmsg_free(msg);
10199 return;
10200 }
10201
10202 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10203 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10204 netdev->ifindex)) ||
10205 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10206 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10207 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10208 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10209 goto nla_put_failure;
10210
10211 genlmsg_end(msg, hdr);
10212
10213 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10214 nl80211_mlme_mcgrp.id, gfp);
10215 return;
10216
10217 nla_put_failure:
10218 genlmsg_cancel(msg, hdr);
10219 nlmsg_free(msg);
10220 }
10221 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10222
10223 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10224 enum nl80211_cqm_rssi_threshold_event rssi_event,
10225 gfp_t gfp)
10226 {
10227 struct wireless_dev *wdev = dev->ieee80211_ptr;
10228 struct wiphy *wiphy = wdev->wiphy;
10229 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10230 struct sk_buff *msg;
10231 struct nlattr *pinfoattr;
10232 void *hdr;
10233
10234 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10235
10236 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10237 if (!msg)
10238 return;
10239
10240 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10241 if (!hdr) {
10242 nlmsg_free(msg);
10243 return;
10244 }
10245
10246 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10247 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10248 goto nla_put_failure;
10249
10250 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10251 if (!pinfoattr)
10252 goto nla_put_failure;
10253
10254 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10255 rssi_event))
10256 goto nla_put_failure;
10257
10258 nla_nest_end(msg, pinfoattr);
10259
10260 genlmsg_end(msg, hdr);
10261
10262 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10263 nl80211_mlme_mcgrp.id, gfp);
10264 return;
10265
10266 nla_put_failure:
10267 genlmsg_cancel(msg, hdr);
10268 nlmsg_free(msg);
10269 }
10270 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10271
10272 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10273 struct net_device *netdev, const u8 *bssid,
10274 const u8 *replay_ctr, gfp_t gfp)
10275 {
10276 struct sk_buff *msg;
10277 struct nlattr *rekey_attr;
10278 void *hdr;
10279
10280 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10281 if (!msg)
10282 return;
10283
10284 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10285 if (!hdr) {
10286 nlmsg_free(msg);
10287 return;
10288 }
10289
10290 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10291 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10292 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10293 goto nla_put_failure;
10294
10295 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10296 if (!rekey_attr)
10297 goto nla_put_failure;
10298
10299 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10300 NL80211_REPLAY_CTR_LEN, replay_ctr))
10301 goto nla_put_failure;
10302
10303 nla_nest_end(msg, rekey_attr);
10304
10305 genlmsg_end(msg, hdr);
10306
10307 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10308 nl80211_mlme_mcgrp.id, gfp);
10309 return;
10310
10311 nla_put_failure:
10312 genlmsg_cancel(msg, hdr);
10313 nlmsg_free(msg);
10314 }
10315
10316 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10317 const u8 *replay_ctr, gfp_t gfp)
10318 {
10319 struct wireless_dev *wdev = dev->ieee80211_ptr;
10320 struct wiphy *wiphy = wdev->wiphy;
10321 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10322
10323 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10324 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10325 }
10326 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10327
10328 static void
10329 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10330 struct net_device *netdev, int index,
10331 const u8 *bssid, bool preauth, gfp_t gfp)
10332 {
10333 struct sk_buff *msg;
10334 struct nlattr *attr;
10335 void *hdr;
10336
10337 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10338 if (!msg)
10339 return;
10340
10341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10342 if (!hdr) {
10343 nlmsg_free(msg);
10344 return;
10345 }
10346
10347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10348 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10349 goto nla_put_failure;
10350
10351 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10352 if (!attr)
10353 goto nla_put_failure;
10354
10355 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10356 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10357 (preauth &&
10358 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10359 goto nla_put_failure;
10360
10361 nla_nest_end(msg, attr);
10362
10363 genlmsg_end(msg, hdr);
10364
10365 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10366 nl80211_mlme_mcgrp.id, gfp);
10367 return;
10368
10369 nla_put_failure:
10370 genlmsg_cancel(msg, hdr);
10371 nlmsg_free(msg);
10372 }
10373
10374 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10375 const u8 *bssid, bool preauth, gfp_t gfp)
10376 {
10377 struct wireless_dev *wdev = dev->ieee80211_ptr;
10378 struct wiphy *wiphy = wdev->wiphy;
10379 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10380
10381 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10382 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10383 }
10384 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10385
10386 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10387 struct net_device *netdev,
10388 struct cfg80211_chan_def *chandef,
10389 gfp_t gfp)
10390 {
10391 struct sk_buff *msg;
10392 void *hdr;
10393
10394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10395 if (!msg)
10396 return;
10397
10398 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10399 if (!hdr) {
10400 nlmsg_free(msg);
10401 return;
10402 }
10403
10404 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10405 goto nla_put_failure;
10406
10407 if (nl80211_send_chandef(msg, chandef))
10408 goto nla_put_failure;
10409
10410 genlmsg_end(msg, hdr);
10411
10412 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10413 nl80211_mlme_mcgrp.id, gfp);
10414 return;
10415
10416 nla_put_failure:
10417 genlmsg_cancel(msg, hdr);
10418 nlmsg_free(msg);
10419 }
10420
10421 void cfg80211_ch_switch_notify(struct net_device *dev,
10422 struct cfg80211_chan_def *chandef)
10423 {
10424 struct wireless_dev *wdev = dev->ieee80211_ptr;
10425 struct wiphy *wiphy = wdev->wiphy;
10426 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10427
10428 trace_cfg80211_ch_switch_notify(dev, chandef);
10429
10430 wdev_lock(wdev);
10431
10432 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10433 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10434 goto out;
10435
10436 wdev->channel = chandef->chan;
10437 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10438 out:
10439 wdev_unlock(wdev);
10440 return;
10441 }
10442 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10443
10444 void cfg80211_cqm_txe_notify(struct net_device *dev,
10445 const u8 *peer, u32 num_packets,
10446 u32 rate, u32 intvl, gfp_t gfp)
10447 {
10448 struct wireless_dev *wdev = dev->ieee80211_ptr;
10449 struct wiphy *wiphy = wdev->wiphy;
10450 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10451 struct sk_buff *msg;
10452 struct nlattr *pinfoattr;
10453 void *hdr;
10454
10455 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10456 if (!msg)
10457 return;
10458
10459 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10460 if (!hdr) {
10461 nlmsg_free(msg);
10462 return;
10463 }
10464
10465 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10466 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10467 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10468 goto nla_put_failure;
10469
10470 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10471 if (!pinfoattr)
10472 goto nla_put_failure;
10473
10474 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10475 goto nla_put_failure;
10476
10477 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10478 goto nla_put_failure;
10479
10480 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10481 goto nla_put_failure;
10482
10483 nla_nest_end(msg, pinfoattr);
10484
10485 genlmsg_end(msg, hdr);
10486
10487 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10488 nl80211_mlme_mcgrp.id, gfp);
10489 return;
10490
10491 nla_put_failure:
10492 genlmsg_cancel(msg, hdr);
10493 nlmsg_free(msg);
10494 }
10495 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10496
10497 void
10498 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10499 struct cfg80211_chan_def *chandef,
10500 enum nl80211_radar_event event,
10501 struct net_device *netdev, gfp_t gfp)
10502 {
10503 struct sk_buff *msg;
10504 void *hdr;
10505
10506 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10507 if (!msg)
10508 return;
10509
10510 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10511 if (!hdr) {
10512 nlmsg_free(msg);
10513 return;
10514 }
10515
10516 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10517 goto nla_put_failure;
10518
10519 /* NOP and radar events don't need a netdev parameter */
10520 if (netdev) {
10521 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10522
10523 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10524 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10525 goto nla_put_failure;
10526 }
10527
10528 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10529 goto nla_put_failure;
10530
10531 if (nl80211_send_chandef(msg, chandef))
10532 goto nla_put_failure;
10533
10534 if (genlmsg_end(msg, hdr) < 0) {
10535 nlmsg_free(msg);
10536 return;
10537 }
10538
10539 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10540 nl80211_mlme_mcgrp.id, gfp);
10541 return;
10542
10543 nla_put_failure:
10544 genlmsg_cancel(msg, hdr);
10545 nlmsg_free(msg);
10546 }
10547
10548 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10549 const u8 *peer, u32 num_packets, gfp_t gfp)
10550 {
10551 struct wireless_dev *wdev = dev->ieee80211_ptr;
10552 struct wiphy *wiphy = wdev->wiphy;
10553 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10554 struct sk_buff *msg;
10555 struct nlattr *pinfoattr;
10556 void *hdr;
10557
10558 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10559
10560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10561 if (!msg)
10562 return;
10563
10564 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10565 if (!hdr) {
10566 nlmsg_free(msg);
10567 return;
10568 }
10569
10570 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10571 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10572 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10573 goto nla_put_failure;
10574
10575 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10576 if (!pinfoattr)
10577 goto nla_put_failure;
10578
10579 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10580 goto nla_put_failure;
10581
10582 nla_nest_end(msg, pinfoattr);
10583
10584 genlmsg_end(msg, hdr);
10585
10586 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10587 nl80211_mlme_mcgrp.id, gfp);
10588 return;
10589
10590 nla_put_failure:
10591 genlmsg_cancel(msg, hdr);
10592 nlmsg_free(msg);
10593 }
10594 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10595
10596 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10597 u64 cookie, bool acked, gfp_t gfp)
10598 {
10599 struct wireless_dev *wdev = dev->ieee80211_ptr;
10600 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10601 struct sk_buff *msg;
10602 void *hdr;
10603 int err;
10604
10605 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10606
10607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10608
10609 if (!msg)
10610 return;
10611
10612 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10613 if (!hdr) {
10614 nlmsg_free(msg);
10615 return;
10616 }
10617
10618 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10619 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10620 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10621 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10622 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10623 goto nla_put_failure;
10624
10625 err = genlmsg_end(msg, hdr);
10626 if (err < 0) {
10627 nlmsg_free(msg);
10628 return;
10629 }
10630
10631 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10632 nl80211_mlme_mcgrp.id, gfp);
10633 return;
10634
10635 nla_put_failure:
10636 genlmsg_cancel(msg, hdr);
10637 nlmsg_free(msg);
10638 }
10639 EXPORT_SYMBOL(cfg80211_probe_status);
10640
10641 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10642 const u8 *frame, size_t len,
10643 int freq, int sig_dbm)
10644 {
10645 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10646 struct sk_buff *msg;
10647 void *hdr;
10648 struct cfg80211_beacon_registration *reg;
10649
10650 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10651
10652 spin_lock_bh(&rdev->beacon_registrations_lock);
10653 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10654 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10655 if (!msg) {
10656 spin_unlock_bh(&rdev->beacon_registrations_lock);
10657 return;
10658 }
10659
10660 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10661 if (!hdr)
10662 goto nla_put_failure;
10663
10664 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10665 (freq &&
10666 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10667 (sig_dbm &&
10668 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10669 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10670 goto nla_put_failure;
10671
10672 genlmsg_end(msg, hdr);
10673
10674 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10675 }
10676 spin_unlock_bh(&rdev->beacon_registrations_lock);
10677 return;
10678
10679 nla_put_failure:
10680 spin_unlock_bh(&rdev->beacon_registrations_lock);
10681 if (hdr)
10682 genlmsg_cancel(msg, hdr);
10683 nlmsg_free(msg);
10684 }
10685 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10686
10687 #ifdef CONFIG_PM
10688 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10689 struct cfg80211_wowlan_wakeup *wakeup,
10690 gfp_t gfp)
10691 {
10692 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10693 struct sk_buff *msg;
10694 void *hdr;
10695 int err, size = 200;
10696
10697 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10698
10699 if (wakeup)
10700 size += wakeup->packet_present_len;
10701
10702 msg = nlmsg_new(size, gfp);
10703 if (!msg)
10704 return;
10705
10706 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10707 if (!hdr)
10708 goto free_msg;
10709
10710 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10711 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10712 goto free_msg;
10713
10714 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10715 wdev->netdev->ifindex))
10716 goto free_msg;
10717
10718 if (wakeup) {
10719 struct nlattr *reasons;
10720
10721 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10722
10723 if (wakeup->disconnect &&
10724 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10725 goto free_msg;
10726 if (wakeup->magic_pkt &&
10727 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10728 goto free_msg;
10729 if (wakeup->gtk_rekey_failure &&
10730 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10731 goto free_msg;
10732 if (wakeup->eap_identity_req &&
10733 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10734 goto free_msg;
10735 if (wakeup->four_way_handshake &&
10736 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10737 goto free_msg;
10738 if (wakeup->rfkill_release &&
10739 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10740 goto free_msg;
10741
10742 if (wakeup->pattern_idx >= 0 &&
10743 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10744 wakeup->pattern_idx))
10745 goto free_msg;
10746
10747 if (wakeup->tcp_match)
10748 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10749
10750 if (wakeup->tcp_connlost)
10751 nla_put_flag(msg,
10752 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10753
10754 if (wakeup->tcp_nomoretokens)
10755 nla_put_flag(msg,
10756 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10757
10758 if (wakeup->packet) {
10759 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10760 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10761
10762 if (!wakeup->packet_80211) {
10763 pkt_attr =
10764 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10765 len_attr =
10766 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10767 }
10768
10769 if (wakeup->packet_len &&
10770 nla_put_u32(msg, len_attr, wakeup->packet_len))
10771 goto free_msg;
10772
10773 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10774 wakeup->packet))
10775 goto free_msg;
10776 }
10777
10778 nla_nest_end(msg, reasons);
10779 }
10780
10781 err = genlmsg_end(msg, hdr);
10782 if (err < 0)
10783 goto free_msg;
10784
10785 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10786 nl80211_mlme_mcgrp.id, gfp);
10787 return;
10788
10789 free_msg:
10790 nlmsg_free(msg);
10791 }
10792 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10793 #endif
10794
10795 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10796 enum nl80211_tdls_operation oper,
10797 u16 reason_code, gfp_t gfp)
10798 {
10799 struct wireless_dev *wdev = dev->ieee80211_ptr;
10800 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10801 struct sk_buff *msg;
10802 void *hdr;
10803 int err;
10804
10805 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10806 reason_code);
10807
10808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10809 if (!msg)
10810 return;
10811
10812 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10813 if (!hdr) {
10814 nlmsg_free(msg);
10815 return;
10816 }
10817
10818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10819 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10820 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10821 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10822 (reason_code > 0 &&
10823 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10824 goto nla_put_failure;
10825
10826 err = genlmsg_end(msg, hdr);
10827 if (err < 0) {
10828 nlmsg_free(msg);
10829 return;
10830 }
10831
10832 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10833 nl80211_mlme_mcgrp.id, gfp);
10834 return;
10835
10836 nla_put_failure:
10837 genlmsg_cancel(msg, hdr);
10838 nlmsg_free(msg);
10839 }
10840 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10841
10842 static int nl80211_netlink_notify(struct notifier_block * nb,
10843 unsigned long state,
10844 void *_notify)
10845 {
10846 struct netlink_notify *notify = _notify;
10847 struct cfg80211_registered_device *rdev;
10848 struct wireless_dev *wdev;
10849 struct cfg80211_beacon_registration *reg, *tmp;
10850
10851 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
10852 return NOTIFY_DONE;
10853
10854 rcu_read_lock();
10855
10856 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10857 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10858 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10859
10860 spin_lock_bh(&rdev->beacon_registrations_lock);
10861 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10862 list) {
10863 if (reg->nlportid == notify->portid) {
10864 list_del(&reg->list);
10865 kfree(reg);
10866 break;
10867 }
10868 }
10869 spin_unlock_bh(&rdev->beacon_registrations_lock);
10870 }
10871
10872 rcu_read_unlock();
10873
10874 return NOTIFY_DONE;
10875 }
10876
10877 static struct notifier_block nl80211_netlink_notifier = {
10878 .notifier_call = nl80211_netlink_notify,
10879 };
10880
10881 void cfg80211_ft_event(struct net_device *netdev,
10882 struct cfg80211_ft_event_params *ft_event)
10883 {
10884 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10885 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10886 struct sk_buff *msg;
10887 void *hdr;
10888 int err;
10889
10890 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10891
10892 if (!ft_event->target_ap)
10893 return;
10894
10895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10896 if (!msg)
10897 return;
10898
10899 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10900 if (!hdr) {
10901 nlmsg_free(msg);
10902 return;
10903 }
10904
10905 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10906 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10907 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10908 if (ft_event->ies)
10909 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10910 if (ft_event->ric_ies)
10911 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10912 ft_event->ric_ies);
10913
10914 err = genlmsg_end(msg, hdr);
10915 if (err < 0) {
10916 nlmsg_free(msg);
10917 return;
10918 }
10919
10920 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10921 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10922 }
10923 EXPORT_SYMBOL(cfg80211_ft_event);
10924
10925 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10926 {
10927 struct cfg80211_registered_device *rdev;
10928 struct sk_buff *msg;
10929 void *hdr;
10930 u32 nlportid;
10931
10932 rdev = wiphy_to_dev(wdev->wiphy);
10933 if (!rdev->crit_proto_nlportid)
10934 return;
10935
10936 nlportid = rdev->crit_proto_nlportid;
10937 rdev->crit_proto_nlportid = 0;
10938
10939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10940 if (!msg)
10941 return;
10942
10943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10944 if (!hdr)
10945 goto nla_put_failure;
10946
10947 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10948 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10949 goto nla_put_failure;
10950
10951 genlmsg_end(msg, hdr);
10952
10953 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10954 return;
10955
10956 nla_put_failure:
10957 if (hdr)
10958 genlmsg_cancel(msg, hdr);
10959 nlmsg_free(msg);
10960
10961 }
10962 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10963
10964 /* initialisation/exit functions */
10965
10966 int nl80211_init(void)
10967 {
10968 int err;
10969
10970 err = genl_register_family_with_ops(&nl80211_fam,
10971 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10972 if (err)
10973 return err;
10974
10975 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10976 if (err)
10977 goto err_out;
10978
10979 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10980 if (err)
10981 goto err_out;
10982
10983 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10984 if (err)
10985 goto err_out;
10986
10987 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10988 if (err)
10989 goto err_out;
10990
10991 #ifdef CONFIG_NL80211_TESTMODE
10992 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10993 if (err)
10994 goto err_out;
10995
10996 err = genl_register_mc_group(&nl80211_fam, &nl80211_vendor_mcgrp);
10997 if (err)
10998 goto err_out;
10999 #endif
11000
11001 err = netlink_register_notifier(&nl80211_netlink_notifier);
11002 if (err)
11003 goto err_out;
11004
11005 return 0;
11006 err_out:
11007 genl_unregister_family(&nl80211_fam);
11008 return err;
11009 }
11010
11011 void nl80211_exit(void)
11012 {
11013 netlink_unregister_notifier(&nl80211_netlink_notifier);
11014 genl_unregister_family(&nl80211_fam);
11015 }
kernel source for telekom puls (alcatel/mediatek)