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9abf1969c114c259125b49d88fd333089665e853
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = "nl80211", /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* returns ERR_PTR values */
51 static struct wireless_dev *
52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53 {
54 struct cfg80211_registered_device *rdev;
55 struct wireless_dev *result = NULL;
56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
58 u64 wdev_id;
59 int wiphy_idx = -1;
60 int ifidx = -1;
61
62 assert_cfg80211_lock();
63
64 if (!have_ifidx && !have_wdev_id)
65 return ERR_PTR(-EINVAL);
66
67 if (have_ifidx)
68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
69 if (have_wdev_id) {
70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
71 wiphy_idx = wdev_id >> 32;
72 }
73
74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
75 struct wireless_dev *wdev;
76
77 if (wiphy_net(&rdev->wiphy) != netns)
78 continue;
79
80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
81 continue;
82
83 mutex_lock(&rdev->devlist_mtx);
84 list_for_each_entry(wdev, &rdev->wdev_list, list) {
85 if (have_ifidx && wdev->netdev &&
86 wdev->netdev->ifindex == ifidx) {
87 result = wdev;
88 break;
89 }
90 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
91 result = wdev;
92 break;
93 }
94 }
95 mutex_unlock(&rdev->devlist_mtx);
96
97 if (result)
98 break;
99 }
100
101 if (result)
102 return result;
103 return ERR_PTR(-ENODEV);
104 }
105
106 static struct cfg80211_registered_device *
107 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
108 {
109 struct cfg80211_registered_device *rdev = NULL, *tmp;
110 struct net_device *netdev;
111
112 assert_cfg80211_lock();
113
114 if (!attrs[NL80211_ATTR_WIPHY] &&
115 !attrs[NL80211_ATTR_IFINDEX] &&
116 !attrs[NL80211_ATTR_WDEV])
117 return ERR_PTR(-EINVAL);
118
119 if (attrs[NL80211_ATTR_WIPHY])
120 rdev = cfg80211_rdev_by_wiphy_idx(
121 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
122
123 if (attrs[NL80211_ATTR_WDEV]) {
124 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
125 struct wireless_dev *wdev;
126 bool found = false;
127
128 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
129 if (tmp) {
130 /* make sure wdev exists */
131 mutex_lock(&tmp->devlist_mtx);
132 list_for_each_entry(wdev, &tmp->wdev_list, list) {
133 if (wdev->identifier != (u32)wdev_id)
134 continue;
135 found = true;
136 break;
137 }
138 mutex_unlock(&tmp->devlist_mtx);
139
140 if (!found)
141 tmp = NULL;
142
143 if (rdev && tmp != rdev)
144 return ERR_PTR(-EINVAL);
145 rdev = tmp;
146 }
147 }
148
149 if (attrs[NL80211_ATTR_IFINDEX]) {
150 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
151 netdev = dev_get_by_index(netns, ifindex);
152 if (netdev) {
153 if (netdev->ieee80211_ptr)
154 tmp = wiphy_to_dev(
155 netdev->ieee80211_ptr->wiphy);
156 else
157 tmp = NULL;
158
159 dev_put(netdev);
160
161 /* not wireless device -- return error */
162 if (!tmp)
163 return ERR_PTR(-EINVAL);
164
165 /* mismatch -- return error */
166 if (rdev && tmp != rdev)
167 return ERR_PTR(-EINVAL);
168
169 rdev = tmp;
170 }
171 }
172
173 if (!rdev)
174 return ERR_PTR(-ENODEV);
175
176 if (netns != wiphy_net(&rdev->wiphy))
177 return ERR_PTR(-ENODEV);
178
179 return rdev;
180 }
181
182 /*
183 * This function returns a pointer to the driver
184 * that the genl_info item that is passed refers to.
185 * If successful, it returns non-NULL and also locks
186 * the driver's mutex!
187 *
188 * This means that you need to call cfg80211_unlock_rdev()
189 * before being allowed to acquire &cfg80211_mutex!
190 *
191 * This is necessary because we need to lock the global
192 * mutex to get an item off the list safely, and then
193 * we lock the rdev mutex so it doesn't go away under us.
194 *
195 * We don't want to keep cfg80211_mutex locked
196 * for all the time in order to allow requests on
197 * other interfaces to go through at the same time.
198 *
199 * The result of this can be a PTR_ERR and hence must
200 * be checked with IS_ERR() for errors.
201 */
202 static struct cfg80211_registered_device *
203 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
204 {
205 struct cfg80211_registered_device *rdev;
206
207 mutex_lock(&cfg80211_mutex);
208 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
209
210 /* if it is not an error we grab the lock on
211 * it to assure it won't be going away while
212 * we operate on it */
213 if (!IS_ERR(rdev))
214 mutex_lock(&rdev->mtx);
215
216 mutex_unlock(&cfg80211_mutex);
217
218 return rdev;
219 }
220
221 /* policy for the attributes */
222 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
223 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
224 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
225 .len = 20-1 },
226 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
227
228 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
231 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
232 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
233
234 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
235 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
236 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
237 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
238 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
239
240 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
241 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
242 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
243
244 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
245 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
246
247 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
248 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
249 .len = WLAN_MAX_KEY_LEN },
250 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
251 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
252 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
253 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
254 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
255
256 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
257 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
258 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
259 .len = IEEE80211_MAX_DATA_LEN },
260 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
261 .len = IEEE80211_MAX_DATA_LEN },
262 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
263 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
264 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
265 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
266 .len = NL80211_MAX_SUPP_RATES },
267 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
268 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
269 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
270 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
271 .len = IEEE80211_MAX_MESH_ID_LEN },
272 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
273
274 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
275 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
276
277 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
278 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
279 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
280 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
281 .len = NL80211_MAX_SUPP_RATES },
282 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
283
284 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
285 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
286
287 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
288
289 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
290 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
291 .len = IEEE80211_MAX_DATA_LEN },
292 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
293 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
294
295 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
296 .len = IEEE80211_MAX_SSID_LEN },
297 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
298 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
299 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
300 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
301 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
302 [NL80211_ATTR_STA_FLAGS2] = {
303 .len = sizeof(struct nl80211_sta_flag_update),
304 },
305 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
306 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
307 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
308 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
309 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
310 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
311 [NL80211_ATTR_PID] = { .type = NLA_U32 },
312 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
313 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
314 .len = WLAN_PMKID_LEN },
315 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
316 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
317 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
318 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
319 .len = IEEE80211_MAX_DATA_LEN },
320 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
321 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
323 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
324 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
325 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
326 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
327 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
328 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
329 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
330 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
331 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
332 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
333 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
334 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
335 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
336 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
337 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
338 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
339 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
340 .len = IEEE80211_MAX_DATA_LEN },
341 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_DATA_LEN },
343 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
344 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
345 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
346 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
347 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
348 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
349 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
350 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
351 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
352 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
353 .len = IEEE80211_MAX_DATA_LEN },
354 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
355 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
356 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
357 .len = NL80211_HT_CAPABILITY_LEN
358 },
359 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
360 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
361 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
362 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
363 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
364 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
366 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
367 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
368 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
369 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
370 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
371 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
372 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
373 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
374 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
375 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
376 .len = NL80211_VHT_CAPABILITY_LEN,
377 },
378 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
379 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
380 .len = IEEE80211_MAX_DATA_LEN },
381 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
382 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
383 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
387 };
388
389 /* policy for the key attributes */
390 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
391 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
392 [NL80211_KEY_IDX] = { .type = NLA_U8 },
393 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
394 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
395 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
396 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
397 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
398 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
399 };
400
401 /* policy for the key default flags */
402 static const struct nla_policy
403 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
404 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
405 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
406 };
407
408 /* policy for WoWLAN attributes */
409 static const struct nla_policy
410 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
411 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
412 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
413 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
414 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
415 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
418 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
419 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
420 };
421
422 static const struct nla_policy
423 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
424 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
425 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
426 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
427 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
428 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
429 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
430 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
431 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
432 },
433 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
434 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
435 },
436 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
438 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
439 };
440
441 /* policy for GTK rekey offload attributes */
442 static const struct nla_policy
443 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
444 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
445 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
446 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
447 };
448
449 static const struct nla_policy
450 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
451 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
452 .len = IEEE80211_MAX_SSID_LEN },
453 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
454 };
455
456 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
457 struct netlink_callback *cb,
458 struct cfg80211_registered_device **rdev,
459 struct wireless_dev **wdev)
460 {
461 int err;
462
463 rtnl_lock();
464 mutex_lock(&cfg80211_mutex);
465
466 if (!cb->args[0]) {
467 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
468 nl80211_fam.attrbuf, nl80211_fam.maxattr,
469 nl80211_policy);
470 if (err)
471 goto out_unlock;
472
473 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
474 nl80211_fam.attrbuf);
475 if (IS_ERR(*wdev)) {
476 err = PTR_ERR(*wdev);
477 goto out_unlock;
478 }
479 *rdev = wiphy_to_dev((*wdev)->wiphy);
480 /* 0 is the first index - add 1 to parse only once */
481 cb->args[0] = (*rdev)->wiphy_idx + 1;
482 cb->args[1] = (*wdev)->identifier;
483 } else {
484 /* subtract the 1 again here */
485 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
486 struct wireless_dev *tmp;
487
488 if (!wiphy) {
489 err = -ENODEV;
490 goto out_unlock;
491 }
492 *rdev = wiphy_to_dev(wiphy);
493 *wdev = NULL;
494
495 mutex_lock(&(*rdev)->devlist_mtx);
496 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
497 if (tmp->identifier == cb->args[1]) {
498 *wdev = tmp;
499 break;
500 }
501 }
502 mutex_unlock(&(*rdev)->devlist_mtx);
503
504 if (!*wdev) {
505 err = -ENODEV;
506 goto out_unlock;
507 }
508 }
509
510 cfg80211_lock_rdev(*rdev);
511
512 mutex_unlock(&cfg80211_mutex);
513 return 0;
514 out_unlock:
515 mutex_unlock(&cfg80211_mutex);
516 rtnl_unlock();
517 return err;
518 }
519
520 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
521 {
522 cfg80211_unlock_rdev(rdev);
523 rtnl_unlock();
524 }
525
526 /* IE validation */
527 static bool is_valid_ie_attr(const struct nlattr *attr)
528 {
529 const u8 *pos;
530 int len;
531
532 if (!attr)
533 return true;
534
535 pos = nla_data(attr);
536 len = nla_len(attr);
537
538 while (len) {
539 u8 elemlen;
540
541 if (len < 2)
542 return false;
543 len -= 2;
544
545 elemlen = pos[1];
546 if (elemlen > len)
547 return false;
548
549 len -= elemlen;
550 pos += 2 + elemlen;
551 }
552
553 return true;
554 }
555
556 /* message building helper */
557 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
558 int flags, u8 cmd)
559 {
560 /* since there is no private header just add the generic one */
561 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
562 }
563
564 static int nl80211_msg_put_channel(struct sk_buff *msg,
565 struct ieee80211_channel *chan,
566 bool large)
567 {
568 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
569 chan->center_freq))
570 goto nla_put_failure;
571
572 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
574 goto nla_put_failure;
575 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
577 goto nla_put_failure;
578 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
580 goto nla_put_failure;
581 if (chan->flags & IEEE80211_CHAN_RADAR) {
582 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
583 goto nla_put_failure;
584 if (large) {
585 u32 time;
586
587 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
588
589 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
590 chan->dfs_state))
591 goto nla_put_failure;
592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
593 time))
594 goto nla_put_failure;
595 }
596 }
597
598 if (large) {
599 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
600 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
601 goto nla_put_failure;
602 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
603 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
604 goto nla_put_failure;
605 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
606 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
607 goto nla_put_failure;
608 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
609 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
610 goto nla_put_failure;
611 }
612
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
614 DBM_TO_MBM(chan->max_power)))
615 goto nla_put_failure;
616
617 return 0;
618
619 nla_put_failure:
620 return -ENOBUFS;
621 }
622
623 /* netlink command implementations */
624
625 struct key_parse {
626 struct key_params p;
627 int idx;
628 int type;
629 bool def, defmgmt;
630 bool def_uni, def_multi;
631 };
632
633 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
634 {
635 struct nlattr *tb[NL80211_KEY_MAX + 1];
636 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
637 nl80211_key_policy);
638 if (err)
639 return err;
640
641 k->def = !!tb[NL80211_KEY_DEFAULT];
642 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
643
644 if (k->def) {
645 k->def_uni = true;
646 k->def_multi = true;
647 }
648 if (k->defmgmt)
649 k->def_multi = true;
650
651 if (tb[NL80211_KEY_IDX])
652 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
653
654 if (tb[NL80211_KEY_DATA]) {
655 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
656 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
657 }
658
659 if (tb[NL80211_KEY_SEQ]) {
660 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
661 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
662 }
663
664 if (tb[NL80211_KEY_CIPHER])
665 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
666
667 if (tb[NL80211_KEY_TYPE]) {
668 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
669 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
670 return -EINVAL;
671 }
672
673 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
674 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
675 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
676 tb[NL80211_KEY_DEFAULT_TYPES],
677 nl80211_key_default_policy);
678 if (err)
679 return err;
680
681 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
682 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
683 }
684
685 return 0;
686 }
687
688 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
689 {
690 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
691 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
692 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
693 }
694
695 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
696 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
697 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
698 }
699
700 if (info->attrs[NL80211_ATTR_KEY_IDX])
701 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
702
703 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
704 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
705
706 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
707 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
708
709 if (k->def) {
710 k->def_uni = true;
711 k->def_multi = true;
712 }
713 if (k->defmgmt)
714 k->def_multi = true;
715
716 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
717 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
718 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
719 return -EINVAL;
720 }
721
722 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
723 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
724 int err = nla_parse_nested(
725 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
726 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
727 nl80211_key_default_policy);
728 if (err)
729 return err;
730
731 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
732 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
733 }
734
735 return 0;
736 }
737
738 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
739 {
740 int err;
741
742 memset(k, 0, sizeof(*k));
743 k->idx = -1;
744 k->type = -1;
745
746 if (info->attrs[NL80211_ATTR_KEY])
747 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
748 else
749 err = nl80211_parse_key_old(info, k);
750
751 if (err)
752 return err;
753
754 if (k->def && k->defmgmt)
755 return -EINVAL;
756
757 if (k->defmgmt) {
758 if (k->def_uni || !k->def_multi)
759 return -EINVAL;
760 }
761
762 if (k->idx != -1) {
763 if (k->defmgmt) {
764 if (k->idx < 4 || k->idx > 5)
765 return -EINVAL;
766 } else if (k->def) {
767 if (k->idx < 0 || k->idx > 3)
768 return -EINVAL;
769 } else {
770 if (k->idx < 0 || k->idx > 5)
771 return -EINVAL;
772 }
773 }
774
775 return 0;
776 }
777
778 static struct cfg80211_cached_keys *
779 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
780 struct nlattr *keys, bool *no_ht)
781 {
782 struct key_parse parse;
783 struct nlattr *key;
784 struct cfg80211_cached_keys *result;
785 int rem, err, def = 0;
786
787 result = kzalloc(sizeof(*result), GFP_KERNEL);
788 if (!result)
789 return ERR_PTR(-ENOMEM);
790
791 result->def = -1;
792 result->defmgmt = -1;
793
794 nla_for_each_nested(key, keys, rem) {
795 memset(&parse, 0, sizeof(parse));
796 parse.idx = -1;
797
798 err = nl80211_parse_key_new(key, &parse);
799 if (err)
800 goto error;
801 err = -EINVAL;
802 if (!parse.p.key)
803 goto error;
804 if (parse.idx < 0 || parse.idx > 4)
805 goto error;
806 if (parse.def) {
807 if (def)
808 goto error;
809 def = 1;
810 result->def = parse.idx;
811 if (!parse.def_uni || !parse.def_multi)
812 goto error;
813 } else if (parse.defmgmt)
814 goto error;
815 err = cfg80211_validate_key_settings(rdev, &parse.p,
816 parse.idx, false, NULL);
817 if (err)
818 goto error;
819 result->params[parse.idx].cipher = parse.p.cipher;
820 result->params[parse.idx].key_len = parse.p.key_len;
821 result->params[parse.idx].key = result->data[parse.idx];
822 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
823
824 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
825 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
826 if (no_ht)
827 *no_ht = true;
828 }
829 }
830
831 return result;
832 error:
833 kfree(result);
834 return ERR_PTR(err);
835 }
836
837 static int nl80211_key_allowed(struct wireless_dev *wdev)
838 {
839 ASSERT_WDEV_LOCK(wdev);
840
841 switch (wdev->iftype) {
842 case NL80211_IFTYPE_AP:
843 case NL80211_IFTYPE_AP_VLAN:
844 case NL80211_IFTYPE_P2P_GO:
845 case NL80211_IFTYPE_MESH_POINT:
846 break;
847 case NL80211_IFTYPE_ADHOC:
848 if (!wdev->current_bss)
849 return -ENOLINK;
850 break;
851 case NL80211_IFTYPE_STATION:
852 case NL80211_IFTYPE_P2P_CLIENT:
853 if (wdev->sme_state != CFG80211_SME_CONNECTED)
854 return -ENOLINK;
855 break;
856 default:
857 return -EINVAL;
858 }
859
860 return 0;
861 }
862
863 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
864 {
865 struct nlattr *nl_modes = nla_nest_start(msg, attr);
866 int i;
867
868 if (!nl_modes)
869 goto nla_put_failure;
870
871 i = 0;
872 while (ifmodes) {
873 if ((ifmodes & 1) && nla_put_flag(msg, i))
874 goto nla_put_failure;
875 ifmodes >>= 1;
876 i++;
877 }
878
879 nla_nest_end(msg, nl_modes);
880 return 0;
881
882 nla_put_failure:
883 return -ENOBUFS;
884 }
885
886 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
887 struct sk_buff *msg,
888 bool large)
889 {
890 struct nlattr *nl_combis;
891 int i, j;
892
893 nl_combis = nla_nest_start(msg,
894 NL80211_ATTR_INTERFACE_COMBINATIONS);
895 if (!nl_combis)
896 goto nla_put_failure;
897
898 for (i = 0; i < wiphy->n_iface_combinations; i++) {
899 const struct ieee80211_iface_combination *c;
900 struct nlattr *nl_combi, *nl_limits;
901
902 c = &wiphy->iface_combinations[i];
903
904 nl_combi = nla_nest_start(msg, i + 1);
905 if (!nl_combi)
906 goto nla_put_failure;
907
908 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
909 if (!nl_limits)
910 goto nla_put_failure;
911
912 for (j = 0; j < c->n_limits; j++) {
913 struct nlattr *nl_limit;
914
915 nl_limit = nla_nest_start(msg, j + 1);
916 if (!nl_limit)
917 goto nla_put_failure;
918 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
919 c->limits[j].max))
920 goto nla_put_failure;
921 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
922 c->limits[j].types))
923 goto nla_put_failure;
924 nla_nest_end(msg, nl_limit);
925 }
926
927 nla_nest_end(msg, nl_limits);
928
929 if (c->beacon_int_infra_match &&
930 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
931 goto nla_put_failure;
932 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
933 c->num_different_channels) ||
934 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
935 c->max_interfaces))
936 goto nla_put_failure;
937 if (large &&
938 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
939 c->radar_detect_widths))
940 goto nla_put_failure;
941
942 nla_nest_end(msg, nl_combi);
943 }
944
945 nla_nest_end(msg, nl_combis);
946
947 return 0;
948 nla_put_failure:
949 return -ENOBUFS;
950 }
951
952 #ifdef CONFIG_PM
953 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
954 struct sk_buff *msg)
955 {
956 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
957 struct nlattr *nl_tcp;
958
959 if (!tcp)
960 return 0;
961
962 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
963 if (!nl_tcp)
964 return -ENOBUFS;
965
966 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
967 tcp->data_payload_max))
968 return -ENOBUFS;
969
970 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
971 tcp->data_payload_max))
972 return -ENOBUFS;
973
974 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
975 return -ENOBUFS;
976
977 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
978 sizeof(*tcp->tok), tcp->tok))
979 return -ENOBUFS;
980
981 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
982 tcp->data_interval_max))
983 return -ENOBUFS;
984
985 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
986 tcp->wake_payload_max))
987 return -ENOBUFS;
988
989 nla_nest_end(msg, nl_tcp);
990 return 0;
991 }
992
993 static int nl80211_send_wowlan(struct sk_buff *msg,
994 struct cfg80211_registered_device *dev,
995 bool large)
996 {
997 struct nlattr *nl_wowlan;
998
999 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
1000 return 0;
1001
1002 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1003 if (!nl_wowlan)
1004 return -ENOBUFS;
1005
1006 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1007 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1008 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1009 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1010 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1011 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1012 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1013 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1014 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1015 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1016 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1017 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1018 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1019 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1020 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1021 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1022 return -ENOBUFS;
1023
1024 if (dev->wiphy.wowlan.n_patterns) {
1025 struct nl80211_wowlan_pattern_support pat = {
1026 .max_patterns = dev->wiphy.wowlan.n_patterns,
1027 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
1028 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
1029 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
1030 };
1031
1032 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1033 sizeof(pat), &pat))
1034 return -ENOBUFS;
1035 }
1036
1037 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1038 return -ENOBUFS;
1039
1040 nla_nest_end(msg, nl_wowlan);
1041
1042 return 0;
1043 }
1044 #endif
1045
1046 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1047 struct ieee80211_supported_band *sband)
1048 {
1049 struct nlattr *nl_rates, *nl_rate;
1050 struct ieee80211_rate *rate;
1051 int i;
1052
1053 /* add HT info */
1054 if (sband->ht_cap.ht_supported &&
1055 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1056 sizeof(sband->ht_cap.mcs),
1057 &sband->ht_cap.mcs) ||
1058 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1059 sband->ht_cap.cap) ||
1060 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1061 sband->ht_cap.ampdu_factor) ||
1062 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1063 sband->ht_cap.ampdu_density)))
1064 return -ENOBUFS;
1065
1066 /* add VHT info */
1067 if (sband->vht_cap.vht_supported &&
1068 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1069 sizeof(sband->vht_cap.vht_mcs),
1070 &sband->vht_cap.vht_mcs) ||
1071 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1072 sband->vht_cap.cap)))
1073 return -ENOBUFS;
1074
1075 /* add bitrates */
1076 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1077 if (!nl_rates)
1078 return -ENOBUFS;
1079
1080 for (i = 0; i < sband->n_bitrates; i++) {
1081 nl_rate = nla_nest_start(msg, i);
1082 if (!nl_rate)
1083 return -ENOBUFS;
1084
1085 rate = &sband->bitrates[i];
1086 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1087 rate->bitrate))
1088 return -ENOBUFS;
1089 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1090 nla_put_flag(msg,
1091 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1092 return -ENOBUFS;
1093
1094 nla_nest_end(msg, nl_rate);
1095 }
1096
1097 nla_nest_end(msg, nl_rates);
1098
1099 return 0;
1100 }
1101
1102 static int
1103 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1104 const struct ieee80211_txrx_stypes *mgmt_stypes)
1105 {
1106 u16 stypes;
1107 struct nlattr *nl_ftypes, *nl_ifs;
1108 enum nl80211_iftype ift;
1109 int i;
1110
1111 if (!mgmt_stypes)
1112 return 0;
1113
1114 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1115 if (!nl_ifs)
1116 return -ENOBUFS;
1117
1118 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1119 nl_ftypes = nla_nest_start(msg, ift);
1120 if (!nl_ftypes)
1121 return -ENOBUFS;
1122 i = 0;
1123 stypes = mgmt_stypes[ift].tx;
1124 while (stypes) {
1125 if ((stypes & 1) &&
1126 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1127 (i << 4) | IEEE80211_FTYPE_MGMT))
1128 return -ENOBUFS;
1129 stypes >>= 1;
1130 i++;
1131 }
1132 nla_nest_end(msg, nl_ftypes);
1133 }
1134
1135 nla_nest_end(msg, nl_ifs);
1136
1137 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1138 if (!nl_ifs)
1139 return -ENOBUFS;
1140
1141 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1142 nl_ftypes = nla_nest_start(msg, ift);
1143 if (!nl_ftypes)
1144 return -ENOBUFS;
1145 i = 0;
1146 stypes = mgmt_stypes[ift].rx;
1147 while (stypes) {
1148 if ((stypes & 1) &&
1149 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1150 (i << 4) | IEEE80211_FTYPE_MGMT))
1151 return -ENOBUFS;
1152 stypes >>= 1;
1153 i++;
1154 }
1155 nla_nest_end(msg, nl_ftypes);
1156 }
1157 nla_nest_end(msg, nl_ifs);
1158
1159 return 0;
1160 }
1161
1162 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1163 struct sk_buff *msg, u32 portid, u32 seq,
1164 int flags, bool split, long *split_start,
1165 long *band_start, long *chan_start)
1166 {
1167 void *hdr;
1168 struct nlattr *nl_bands, *nl_band;
1169 struct nlattr *nl_freqs, *nl_freq;
1170 struct nlattr *nl_cmds;
1171 enum ieee80211_band band;
1172 struct ieee80211_channel *chan;
1173 int i;
1174 const struct ieee80211_txrx_stypes *mgmt_stypes =
1175 dev->wiphy.mgmt_stypes;
1176 long start = 0, start_chan = 0, start_band = 0;
1177 u32 features;
1178
1179 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1180 if (!hdr)
1181 return -ENOBUFS;
1182
1183 /* allow always using the variables */
1184 if (!split) {
1185 split_start = &start;
1186 band_start = &start_band;
1187 chan_start = &start_chan;
1188 }
1189
1190 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1191 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1192 wiphy_name(&dev->wiphy)) ||
1193 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1194 cfg80211_rdev_list_generation))
1195 goto nla_put_failure;
1196
1197 switch (*split_start) {
1198 case 0:
1199 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1200 dev->wiphy.retry_short) ||
1201 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1202 dev->wiphy.retry_long) ||
1203 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1204 dev->wiphy.frag_threshold) ||
1205 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1206 dev->wiphy.rts_threshold) ||
1207 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1208 dev->wiphy.coverage_class) ||
1209 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1210 dev->wiphy.max_scan_ssids) ||
1211 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1212 dev->wiphy.max_sched_scan_ssids) ||
1213 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1214 dev->wiphy.max_scan_ie_len) ||
1215 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1216 dev->wiphy.max_sched_scan_ie_len) ||
1217 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1218 dev->wiphy.max_match_sets))
1219 goto nla_put_failure;
1220
1221 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1222 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1223 goto nla_put_failure;
1224 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1225 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1226 goto nla_put_failure;
1227 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1228 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1229 goto nla_put_failure;
1230 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1231 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1232 goto nla_put_failure;
1233 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1234 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1235 goto nla_put_failure;
1236 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1237 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1238 goto nla_put_failure;
1239
1240 (*split_start)++;
1241 if (split)
1242 break;
1243 case 1:
1244 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1245 sizeof(u32) * dev->wiphy.n_cipher_suites,
1246 dev->wiphy.cipher_suites))
1247 goto nla_put_failure;
1248
1249 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1250 dev->wiphy.max_num_pmkids))
1251 goto nla_put_failure;
1252
1253 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1254 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1255 goto nla_put_failure;
1256
1257 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1258 dev->wiphy.available_antennas_tx) ||
1259 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1260 dev->wiphy.available_antennas_rx))
1261 goto nla_put_failure;
1262
1263 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1264 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1265 dev->wiphy.probe_resp_offload))
1266 goto nla_put_failure;
1267
1268 if ((dev->wiphy.available_antennas_tx ||
1269 dev->wiphy.available_antennas_rx) &&
1270 dev->ops->get_antenna) {
1271 u32 tx_ant = 0, rx_ant = 0;
1272 int res;
1273 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1274 if (!res) {
1275 if (nla_put_u32(msg,
1276 NL80211_ATTR_WIPHY_ANTENNA_TX,
1277 tx_ant) ||
1278 nla_put_u32(msg,
1279 NL80211_ATTR_WIPHY_ANTENNA_RX,
1280 rx_ant))
1281 goto nla_put_failure;
1282 }
1283 }
1284
1285 (*split_start)++;
1286 if (split)
1287 break;
1288 case 2:
1289 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1290 dev->wiphy.interface_modes))
1291 goto nla_put_failure;
1292 (*split_start)++;
1293 if (split)
1294 break;
1295 case 3:
1296 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1297 if (!nl_bands)
1298 goto nla_put_failure;
1299
1300 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1301 struct ieee80211_supported_band *sband;
1302
1303 sband = dev->wiphy.bands[band];
1304
1305 if (!sband)
1306 continue;
1307
1308 nl_band = nla_nest_start(msg, band);
1309 if (!nl_band)
1310 goto nla_put_failure;
1311
1312 switch (*chan_start) {
1313 case 0:
1314 if (nl80211_send_band_rateinfo(msg, sband))
1315 goto nla_put_failure;
1316 (*chan_start)++;
1317 if (split)
1318 break;
1319 default:
1320 /* add frequencies */
1321 nl_freqs = nla_nest_start(
1322 msg, NL80211_BAND_ATTR_FREQS);
1323 if (!nl_freqs)
1324 goto nla_put_failure;
1325
1326 for (i = *chan_start - 1;
1327 i < sband->n_channels;
1328 i++) {
1329 nl_freq = nla_nest_start(msg, i);
1330 if (!nl_freq)
1331 goto nla_put_failure;
1332
1333 chan = &sband->channels[i];
1334
1335 if (nl80211_msg_put_channel(msg, chan,
1336 split))
1337 goto nla_put_failure;
1338
1339 nla_nest_end(msg, nl_freq);
1340 if (split)
1341 break;
1342 }
1343 if (i < sband->n_channels)
1344 *chan_start = i + 2;
1345 else
1346 *chan_start = 0;
1347 nla_nest_end(msg, nl_freqs);
1348 }
1349
1350 nla_nest_end(msg, nl_band);
1351
1352 if (split) {
1353 /* start again here */
1354 if (*chan_start)
1355 band--;
1356 break;
1357 }
1358 }
1359 nla_nest_end(msg, nl_bands);
1360
1361 if (band < IEEE80211_NUM_BANDS)
1362 *band_start = band + 1;
1363 else
1364 *band_start = 0;
1365
1366 /* if bands & channels are done, continue outside */
1367 if (*band_start == 0 && *chan_start == 0)
1368 (*split_start)++;
1369 if (split)
1370 break;
1371 case 4:
1372 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1373 if (!nl_cmds)
1374 goto nla_put_failure;
1375
1376 i = 0;
1377 #define CMD(op, n) \
1378 do { \
1379 if (dev->ops->op) { \
1380 i++; \
1381 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1382 goto nla_put_failure; \
1383 } \
1384 } while (0)
1385
1386 CMD(add_virtual_intf, NEW_INTERFACE);
1387 CMD(change_virtual_intf, SET_INTERFACE);
1388 CMD(add_key, NEW_KEY);
1389 CMD(start_ap, START_AP);
1390 CMD(add_station, NEW_STATION);
1391 CMD(add_mpath, NEW_MPATH);
1392 CMD(update_mesh_config, SET_MESH_CONFIG);
1393 CMD(change_bss, SET_BSS);
1394 CMD(auth, AUTHENTICATE);
1395 CMD(assoc, ASSOCIATE);
1396 CMD(deauth, DEAUTHENTICATE);
1397 CMD(disassoc, DISASSOCIATE);
1398 CMD(join_ibss, JOIN_IBSS);
1399 CMD(join_mesh, JOIN_MESH);
1400 CMD(set_pmksa, SET_PMKSA);
1401 CMD(del_pmksa, DEL_PMKSA);
1402 CMD(flush_pmksa, FLUSH_PMKSA);
1403 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1404 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1405 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1406 CMD(mgmt_tx, FRAME);
1407 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1408 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1409 i++;
1410 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1411 goto nla_put_failure;
1412 }
1413 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1414 dev->ops->join_mesh) {
1415 i++;
1416 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1417 goto nla_put_failure;
1418 }
1419 CMD(set_wds_peer, SET_WDS_PEER);
1420 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1421 CMD(tdls_mgmt, TDLS_MGMT);
1422 CMD(tdls_oper, TDLS_OPER);
1423 }
1424 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1425 CMD(sched_scan_start, START_SCHED_SCAN);
1426 CMD(probe_client, PROBE_CLIENT);
1427 CMD(set_noack_map, SET_NOACK_MAP);
1428 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1429 i++;
1430 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1431 goto nla_put_failure;
1432 }
1433 CMD(start_p2p_device, START_P2P_DEVICE);
1434 CMD(set_mcast_rate, SET_MCAST_RATE);
1435 if (split) {
1436 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1437 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1438 }
1439
1440 #ifdef CONFIG_NL80211_TESTMODE
1441 CMD(testmode_cmd, TESTMODE);
1442 #endif
1443
1444 #undef CMD
1445
1446 if (dev->ops->connect || dev->ops->auth) {
1447 i++;
1448 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1449 goto nla_put_failure;
1450 }
1451
1452 if (dev->ops->disconnect || dev->ops->deauth) {
1453 i++;
1454 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1455 goto nla_put_failure;
1456 }
1457
1458 nla_nest_end(msg, nl_cmds);
1459 (*split_start)++;
1460 if (split)
1461 break;
1462 case 5:
1463 if (dev->ops->remain_on_channel &&
1464 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1465 nla_put_u32(msg,
1466 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1467 dev->wiphy.max_remain_on_channel_duration))
1468 goto nla_put_failure;
1469
1470 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1471 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1472 goto nla_put_failure;
1473
1474 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1475 goto nla_put_failure;
1476 (*split_start)++;
1477 if (split)
1478 break;
1479 case 6:
1480 #ifdef CONFIG_PM
1481 if (nl80211_send_wowlan(msg, dev, split))
1482 goto nla_put_failure;
1483 (*split_start)++;
1484 if (split)
1485 break;
1486 #else
1487 (*split_start)++;
1488 #endif
1489 case 7:
1490 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1491 dev->wiphy.software_iftypes))
1492 goto nla_put_failure;
1493
1494 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1495 goto nla_put_failure;
1496
1497 (*split_start)++;
1498 if (split)
1499 break;
1500 case 8:
1501 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1502 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1503 dev->wiphy.ap_sme_capa))
1504 goto nla_put_failure;
1505
1506 features = dev->wiphy.features;
1507 /*
1508 * We can only add the per-channel limit information if the
1509 * dump is split, otherwise it makes it too big. Therefore
1510 * only advertise it in that case.
1511 */
1512 if (split)
1513 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1514 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1515 goto nla_put_failure;
1516
1517 if (dev->wiphy.ht_capa_mod_mask &&
1518 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1519 sizeof(*dev->wiphy.ht_capa_mod_mask),
1520 dev->wiphy.ht_capa_mod_mask))
1521 goto nla_put_failure;
1522
1523 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1524 dev->wiphy.max_acl_mac_addrs &&
1525 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1526 dev->wiphy.max_acl_mac_addrs))
1527 goto nla_put_failure;
1528
1529 if (dev->wiphy.n_vendor_commands) {
1530 const struct nl80211_vendor_cmd_info *info;
1531 struct nlattr *nested;
1532
1533 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1534 if (!nested)
1535 goto nla_put_failure;
1536
1537 for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1538 info = &dev->wiphy.vendor_commands[i].info;
1539 if (nla_put(msg, i + 1, sizeof(*info), info))
1540 goto nla_put_failure;
1541 }
1542 nla_nest_end(msg, nested);
1543 }
1544
1545 if (dev->wiphy.n_vendor_events) {
1546 const struct nl80211_vendor_cmd_info *info;
1547 struct nlattr *nested;
1548
1549 nested = nla_nest_start(msg,
1550 NL80211_ATTR_VENDOR_EVENTS);
1551 if (!nested)
1552 goto nla_put_failure;
1553
1554 for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1555 info = &dev->wiphy.vendor_events[i];
1556 if (nla_put(msg, i + 1, sizeof(*info), info))
1557 goto nla_put_failure;
1558 }
1559 nla_nest_end(msg, nested);
1560 }
1561
1562 /*
1563 * Any information below this point is only available to
1564 * applications that can deal with it being split. This
1565 * helps ensure that newly added capabilities don't break
1566 * older tools by overrunning their buffers.
1567 *
1568 * We still increment split_start so that in the split
1569 * case we'll continue with more data in the next round,
1570 * but break unconditionally so unsplit data stops here.
1571 */
1572 (*split_start)++;
1573 break;
1574 case 9:
1575 if (dev->wiphy.extended_capabilities &&
1576 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1577 dev->wiphy.extended_capabilities_len,
1578 dev->wiphy.extended_capabilities) ||
1579 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1580 dev->wiphy.extended_capabilities_len,
1581 dev->wiphy.extended_capabilities_mask)))
1582 goto nla_put_failure;
1583
1584 if (dev->wiphy.vht_capa_mod_mask &&
1585 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1586 sizeof(*dev->wiphy.vht_capa_mod_mask),
1587 dev->wiphy.vht_capa_mod_mask))
1588 goto nla_put_failure;
1589
1590 /* done */
1591 *split_start = 0;
1592 break;
1593 }
1594 return genlmsg_end(msg, hdr);
1595
1596 nla_put_failure:
1597 genlmsg_cancel(msg, hdr);
1598 return -EMSGSIZE;
1599 }
1600
1601 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1602 {
1603 int idx = 0, ret;
1604 int start = cb->args[0];
1605 struct cfg80211_registered_device *dev;
1606 s64 filter_wiphy = -1;
1607 bool split = false;
1608 struct nlattr **tb;
1609 int res;
1610
1611 /* will be zeroed in nlmsg_parse() */
1612 tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
1613 if (!tb)
1614 return -ENOMEM;
1615
1616 mutex_lock(&cfg80211_mutex);
1617 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1618 tb, NL80211_ATTR_MAX, nl80211_policy);
1619 if (res == 0) {
1620 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1621 if (tb[NL80211_ATTR_WIPHY])
1622 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1623 if (tb[NL80211_ATTR_WDEV])
1624 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1625 if (tb[NL80211_ATTR_IFINDEX]) {
1626 struct net_device *netdev;
1627 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1628
1629 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1630 if (!netdev) {
1631 mutex_unlock(&cfg80211_mutex);
1632 kfree(tb);
1633 return -ENODEV;
1634 }
1635 if (netdev->ieee80211_ptr) {
1636 dev = wiphy_to_dev(
1637 netdev->ieee80211_ptr->wiphy);
1638 filter_wiphy = dev->wiphy_idx;
1639 }
1640 dev_put(netdev);
1641 }
1642 }
1643 kfree(tb);
1644
1645 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1646 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1647 continue;
1648 if (++idx <= start)
1649 continue;
1650 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1651 continue;
1652 /* attempt to fit multiple wiphy data chunks into the skb */
1653 do {
1654 ret = nl80211_send_wiphy(dev, skb,
1655 NETLINK_CB(cb->skb).portid,
1656 cb->nlh->nlmsg_seq,
1657 NLM_F_MULTI,
1658 split, &cb->args[1],
1659 &cb->args[2],
1660 &cb->args[3]);
1661 if (ret < 0) {
1662 /*
1663 * If sending the wiphy data didn't fit (ENOBUFS
1664 * or EMSGSIZE returned), this SKB is still
1665 * empty (so it's not too big because another
1666 * wiphy dataset is already in the skb) and
1667 * we've not tried to adjust the dump allocation
1668 * yet ... then adjust the alloc size to be
1669 * bigger, and return 1 but with the empty skb.
1670 * This results in an empty message being RX'ed
1671 * in userspace, but that is ignored.
1672 *
1673 * We can then retry with the larger buffer.
1674 */
1675 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1676 !skb->len &&
1677 cb->min_dump_alloc < 4096) {
1678 cb->min_dump_alloc = 4096;
1679 mutex_unlock(&cfg80211_mutex);
1680 return 1;
1681 }
1682 idx--;
1683 break;
1684 }
1685 } while (cb->args[1] > 0);
1686 break;
1687 }
1688 mutex_unlock(&cfg80211_mutex);
1689
1690 cb->args[0] = idx;
1691
1692 return skb->len;
1693 }
1694
1695 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1696 {
1697 struct sk_buff *msg;
1698 struct cfg80211_registered_device *dev = info->user_ptr[0];
1699
1700 msg = nlmsg_new(4096, GFP_KERNEL);
1701 if (!msg)
1702 return -ENOMEM;
1703
1704 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1705 false, NULL, NULL, NULL) < 0) {
1706 nlmsg_free(msg);
1707 return -ENOBUFS;
1708 }
1709
1710 return genlmsg_reply(msg, info);
1711 }
1712
1713 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1714 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1715 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1716 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1717 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1718 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1719 };
1720
1721 static int parse_txq_params(struct nlattr *tb[],
1722 struct ieee80211_txq_params *txq_params)
1723 {
1724 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1725 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1726 !tb[NL80211_TXQ_ATTR_AIFS])
1727 return -EINVAL;
1728
1729 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1730 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1731 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1732 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1733 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1734
1735 if (txq_params->ac >= NL80211_NUM_ACS)
1736 return -EINVAL;
1737
1738 return 0;
1739 }
1740
1741 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1742 {
1743 /*
1744 * You can only set the channel explicitly for WDS interfaces,
1745 * all others have their channel managed via their respective
1746 * "establish a connection" command (connect, join, ...)
1747 *
1748 * For AP/GO and mesh mode, the channel can be set with the
1749 * channel userspace API, but is only stored and passed to the
1750 * low-level driver when the AP starts or the mesh is joined.
1751 * This is for backward compatibility, userspace can also give
1752 * the channel in the start-ap or join-mesh commands instead.
1753 *
1754 * Monitors are special as they are normally slaved to
1755 * whatever else is going on, so they have their own special
1756 * operation to set the monitor channel if possible.
1757 */
1758 return !wdev ||
1759 wdev->iftype == NL80211_IFTYPE_AP ||
1760 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1761 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1762 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1763 }
1764
1765 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1766 struct genl_info *info,
1767 struct cfg80211_chan_def *chandef)
1768 {
1769 u32 control_freq;
1770
1771 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1772 return -EINVAL;
1773
1774 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1775
1776 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1777 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1778 chandef->center_freq1 = control_freq;
1779 chandef->center_freq2 = 0;
1780
1781 /* Primary channel not allowed */
1782 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1783 return -EINVAL;
1784
1785 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1786 enum nl80211_channel_type chantype;
1787
1788 chantype = nla_get_u32(
1789 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1790
1791 switch (chantype) {
1792 case NL80211_CHAN_NO_HT:
1793 case NL80211_CHAN_HT20:
1794 case NL80211_CHAN_HT40PLUS:
1795 case NL80211_CHAN_HT40MINUS:
1796 cfg80211_chandef_create(chandef, chandef->chan,
1797 chantype);
1798 break;
1799 default:
1800 return -EINVAL;
1801 }
1802 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1803 chandef->width =
1804 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1805 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1806 chandef->center_freq1 =
1807 nla_get_u32(
1808 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1809 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1810 chandef->center_freq2 =
1811 nla_get_u32(
1812 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1813 }
1814
1815 if (!cfg80211_chandef_valid(chandef))
1816 return -EINVAL;
1817
1818 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1819 IEEE80211_CHAN_DISABLED))
1820 return -EINVAL;
1821
1822 return 0;
1823 }
1824
1825 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1826 struct wireless_dev *wdev,
1827 struct genl_info *info)
1828 {
1829 struct cfg80211_chan_def chandef;
1830 int result;
1831 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1832
1833 if (wdev)
1834 iftype = wdev->iftype;
1835
1836 if (!nl80211_can_set_dev_channel(wdev))
1837 return -EOPNOTSUPP;
1838
1839 result = nl80211_parse_chandef(rdev, info, &chandef);
1840 if (result)
1841 return result;
1842
1843 mutex_lock(&rdev->devlist_mtx);
1844 switch (iftype) {
1845 case NL80211_IFTYPE_AP:
1846 case NL80211_IFTYPE_P2P_GO:
1847 if (wdev->beacon_interval) {
1848 result = -EBUSY;
1849 break;
1850 }
1851 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1852 result = -EINVAL;
1853 break;
1854 }
1855 wdev->preset_chandef = chandef;
1856 result = 0;
1857 break;
1858 case NL80211_IFTYPE_MESH_POINT:
1859 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1860 break;
1861 case NL80211_IFTYPE_MONITOR:
1862 result = cfg80211_set_monitor_channel(rdev, &chandef);
1863 break;
1864 default:
1865 result = -EINVAL;
1866 }
1867 mutex_unlock(&rdev->devlist_mtx);
1868
1869 return result;
1870 }
1871
1872 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1873 {
1874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1875 struct net_device *netdev = info->user_ptr[1];
1876
1877 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1878 }
1879
1880 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1881 {
1882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1883 struct net_device *dev = info->user_ptr[1];
1884 struct wireless_dev *wdev = dev->ieee80211_ptr;
1885 const u8 *bssid;
1886
1887 if (!info->attrs[NL80211_ATTR_MAC])
1888 return -EINVAL;
1889
1890 if (netif_running(dev))
1891 return -EBUSY;
1892
1893 if (!rdev->ops->set_wds_peer)
1894 return -EOPNOTSUPP;
1895
1896 if (wdev->iftype != NL80211_IFTYPE_WDS)
1897 return -EOPNOTSUPP;
1898
1899 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1900 return rdev_set_wds_peer(rdev, dev, bssid);
1901 }
1902
1903
1904 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1905 {
1906 struct cfg80211_registered_device *rdev;
1907 struct net_device *netdev = NULL;
1908 struct wireless_dev *wdev;
1909 int result = 0, rem_txq_params = 0;
1910 struct nlattr *nl_txq_params;
1911 u32 changed;
1912 u8 retry_short = 0, retry_long = 0;
1913 u32 frag_threshold = 0, rts_threshold = 0;
1914 u8 coverage_class = 0;
1915
1916 /*
1917 * Try to find the wiphy and netdev. Normally this
1918 * function shouldn't need the netdev, but this is
1919 * done for backward compatibility -- previously
1920 * setting the channel was done per wiphy, but now
1921 * it is per netdev. Previous userland like hostapd
1922 * also passed a netdev to set_wiphy, so that it is
1923 * possible to let that go to the right netdev!
1924 */
1925 mutex_lock(&cfg80211_mutex);
1926
1927 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1928 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1929
1930 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1931 if (netdev && netdev->ieee80211_ptr) {
1932 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1933 mutex_lock(&rdev->mtx);
1934 } else
1935 netdev = NULL;
1936 }
1937
1938 if (!netdev) {
1939 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1940 info->attrs);
1941 if (IS_ERR(rdev)) {
1942 mutex_unlock(&cfg80211_mutex);
1943 return PTR_ERR(rdev);
1944 }
1945 wdev = NULL;
1946 netdev = NULL;
1947 result = 0;
1948
1949 mutex_lock(&rdev->mtx);
1950 } else
1951 wdev = netdev->ieee80211_ptr;
1952
1953 /*
1954 * end workaround code, by now the rdev is available
1955 * and locked, and wdev may or may not be NULL.
1956 */
1957
1958 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1959 result = cfg80211_dev_rename(
1960 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1961
1962 mutex_unlock(&cfg80211_mutex);
1963
1964 if (result)
1965 goto bad_res;
1966
1967 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1968 struct ieee80211_txq_params txq_params;
1969 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1970
1971 if (!rdev->ops->set_txq_params) {
1972 result = -EOPNOTSUPP;
1973 goto bad_res;
1974 }
1975
1976 if (!netdev) {
1977 result = -EINVAL;
1978 goto bad_res;
1979 }
1980
1981 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1982 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1983 result = -EINVAL;
1984 goto bad_res;
1985 }
1986
1987 if (!netif_running(netdev)) {
1988 result = -ENETDOWN;
1989 goto bad_res;
1990 }
1991
1992 nla_for_each_nested(nl_txq_params,
1993 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1994 rem_txq_params) {
1995 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1996 nla_data(nl_txq_params),
1997 nla_len(nl_txq_params),
1998 txq_params_policy);
1999 result = parse_txq_params(tb, &txq_params);
2000 if (result)
2001 goto bad_res;
2002
2003 result = rdev_set_txq_params(rdev, netdev,
2004 &txq_params);
2005 if (result)
2006 goto bad_res;
2007 }
2008 }
2009
2010 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2011 result = __nl80211_set_channel(rdev,
2012 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2013 info);
2014 if (result)
2015 goto bad_res;
2016 }
2017
2018 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2019 struct wireless_dev *txp_wdev = wdev;
2020 enum nl80211_tx_power_setting type;
2021 int idx, mbm = 0;
2022
2023 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2024 txp_wdev = NULL;
2025
2026 if (!rdev->ops->set_tx_power) {
2027 result = -EOPNOTSUPP;
2028 goto bad_res;
2029 }
2030
2031 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2032 type = nla_get_u32(info->attrs[idx]);
2033
2034 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2035 (type != NL80211_TX_POWER_AUTOMATIC)) {
2036 result = -EINVAL;
2037 goto bad_res;
2038 }
2039
2040 if (type != NL80211_TX_POWER_AUTOMATIC) {
2041 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2042 mbm = nla_get_u32(info->attrs[idx]);
2043 }
2044
2045 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2046 if (result)
2047 goto bad_res;
2048 }
2049
2050 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2051 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2052 u32 tx_ant, rx_ant;
2053 if ((!rdev->wiphy.available_antennas_tx &&
2054 !rdev->wiphy.available_antennas_rx) ||
2055 !rdev->ops->set_antenna) {
2056 result = -EOPNOTSUPP;
2057 goto bad_res;
2058 }
2059
2060 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2061 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2062
2063 /* reject antenna configurations which don't match the
2064 * available antenna masks, except for the "all" mask */
2065 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2066 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2067 result = -EINVAL;
2068 goto bad_res;
2069 }
2070
2071 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2072 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2073
2074 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2075 if (result)
2076 goto bad_res;
2077 }
2078
2079 changed = 0;
2080
2081 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2082 retry_short = nla_get_u8(
2083 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2084 if (retry_short == 0) {
2085 result = -EINVAL;
2086 goto bad_res;
2087 }
2088 changed |= WIPHY_PARAM_RETRY_SHORT;
2089 }
2090
2091 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2092 retry_long = nla_get_u8(
2093 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2094 if (retry_long == 0) {
2095 result = -EINVAL;
2096 goto bad_res;
2097 }
2098 changed |= WIPHY_PARAM_RETRY_LONG;
2099 }
2100
2101 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2102 frag_threshold = nla_get_u32(
2103 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2104 if (frag_threshold < 256) {
2105 result = -EINVAL;
2106 goto bad_res;
2107 }
2108 if (frag_threshold != (u32) -1) {
2109 /*
2110 * Fragments (apart from the last one) are required to
2111 * have even length. Make the fragmentation code
2112 * simpler by stripping LSB should someone try to use
2113 * odd threshold value.
2114 */
2115 frag_threshold &= ~0x1;
2116 }
2117 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2118 }
2119
2120 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2121 rts_threshold = nla_get_u32(
2122 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2123 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2124 }
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2127 coverage_class = nla_get_u8(
2128 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2129 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2130 }
2131
2132 if (changed) {
2133 u8 old_retry_short, old_retry_long;
2134 u32 old_frag_threshold, old_rts_threshold;
2135 u8 old_coverage_class;
2136
2137 if (!rdev->ops->set_wiphy_params) {
2138 result = -EOPNOTSUPP;
2139 goto bad_res;
2140 }
2141
2142 old_retry_short = rdev->wiphy.retry_short;
2143 old_retry_long = rdev->wiphy.retry_long;
2144 old_frag_threshold = rdev->wiphy.frag_threshold;
2145 old_rts_threshold = rdev->wiphy.rts_threshold;
2146 old_coverage_class = rdev->wiphy.coverage_class;
2147
2148 if (changed & WIPHY_PARAM_RETRY_SHORT)
2149 rdev->wiphy.retry_short = retry_short;
2150 if (changed & WIPHY_PARAM_RETRY_LONG)
2151 rdev->wiphy.retry_long = retry_long;
2152 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2153 rdev->wiphy.frag_threshold = frag_threshold;
2154 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2155 rdev->wiphy.rts_threshold = rts_threshold;
2156 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2157 rdev->wiphy.coverage_class = coverage_class;
2158
2159 result = rdev_set_wiphy_params(rdev, changed);
2160 if (result) {
2161 rdev->wiphy.retry_short = old_retry_short;
2162 rdev->wiphy.retry_long = old_retry_long;
2163 rdev->wiphy.frag_threshold = old_frag_threshold;
2164 rdev->wiphy.rts_threshold = old_rts_threshold;
2165 rdev->wiphy.coverage_class = old_coverage_class;
2166 }
2167 }
2168
2169 bad_res:
2170 mutex_unlock(&rdev->mtx);
2171 if (netdev)
2172 dev_put(netdev);
2173 return result;
2174 }
2175
2176 static inline u64 wdev_id(struct wireless_dev *wdev)
2177 {
2178 return (u64)wdev->identifier |
2179 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2180 }
2181
2182 static int nl80211_send_chandef(struct sk_buff *msg,
2183 struct cfg80211_chan_def *chandef)
2184 {
2185 WARN_ON(!cfg80211_chandef_valid(chandef));
2186
2187 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2188 chandef->chan->center_freq))
2189 return -ENOBUFS;
2190 switch (chandef->width) {
2191 case NL80211_CHAN_WIDTH_20_NOHT:
2192 case NL80211_CHAN_WIDTH_20:
2193 case NL80211_CHAN_WIDTH_40:
2194 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2195 cfg80211_get_chandef_type(chandef)))
2196 return -ENOBUFS;
2197 break;
2198 default:
2199 break;
2200 }
2201 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2202 return -ENOBUFS;
2203 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2204 return -ENOBUFS;
2205 if (chandef->center_freq2 &&
2206 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2207 return -ENOBUFS;
2208 return 0;
2209 }
2210
2211 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2212 struct cfg80211_registered_device *rdev,
2213 struct wireless_dev *wdev)
2214 {
2215 struct net_device *dev = wdev->netdev;
2216 void *hdr;
2217
2218 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2219 if (!hdr)
2220 return -1;
2221
2222 if (dev &&
2223 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2224 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2225 goto nla_put_failure;
2226
2227 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2228 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2229 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2230 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2231 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2232 rdev->devlist_generation ^
2233 (cfg80211_rdev_list_generation << 2)))
2234 goto nla_put_failure;
2235
2236 if (rdev->ops->get_channel) {
2237 int ret;
2238 struct cfg80211_chan_def chandef;
2239
2240 ret = rdev_get_channel(rdev, wdev, &chandef);
2241 if (ret == 0) {
2242 if (nl80211_send_chandef(msg, &chandef))
2243 goto nla_put_failure;
2244 }
2245 }
2246
2247 if (wdev->ssid_len) {
2248 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2249 goto nla_put_failure;
2250 }
2251
2252 return genlmsg_end(msg, hdr);
2253
2254 nla_put_failure:
2255 genlmsg_cancel(msg, hdr);
2256 return -EMSGSIZE;
2257 }
2258
2259 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2260 {
2261 int wp_idx = 0;
2262 int if_idx = 0;
2263 int wp_start = cb->args[0];
2264 int if_start = cb->args[1];
2265 struct cfg80211_registered_device *rdev;
2266 struct wireless_dev *wdev;
2267
2268 mutex_lock(&cfg80211_mutex);
2269 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2270 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2271 continue;
2272 if (wp_idx < wp_start) {
2273 wp_idx++;
2274 continue;
2275 }
2276 if_idx = 0;
2277
2278 mutex_lock(&rdev->devlist_mtx);
2279 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2280 if (if_idx < if_start) {
2281 if_idx++;
2282 continue;
2283 }
2284 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2285 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2286 rdev, wdev) < 0) {
2287 mutex_unlock(&rdev->devlist_mtx);
2288 goto out;
2289 }
2290 if_idx++;
2291 }
2292 mutex_unlock(&rdev->devlist_mtx);
2293
2294 wp_idx++;
2295 }
2296 out:
2297 mutex_unlock(&cfg80211_mutex);
2298
2299 cb->args[0] = wp_idx;
2300 cb->args[1] = if_idx;
2301
2302 return skb->len;
2303 }
2304
2305 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2306 {
2307 struct sk_buff *msg;
2308 struct cfg80211_registered_device *dev = info->user_ptr[0];
2309 struct wireless_dev *wdev = info->user_ptr[1];
2310
2311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2312 if (!msg)
2313 return -ENOMEM;
2314
2315 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2316 dev, wdev) < 0) {
2317 nlmsg_free(msg);
2318 return -ENOBUFS;
2319 }
2320
2321 return genlmsg_reply(msg, info);
2322 }
2323
2324 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2325 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2326 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2327 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2328 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2329 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2330 };
2331
2332 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2333 {
2334 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2335 int flag;
2336
2337 *mntrflags = 0;
2338
2339 if (!nla)
2340 return -EINVAL;
2341
2342 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2343 nla, mntr_flags_policy))
2344 return -EINVAL;
2345
2346 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2347 if (flags[flag])
2348 *mntrflags |= (1<<flag);
2349
2350 return 0;
2351 }
2352
2353 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2354 struct net_device *netdev, u8 use_4addr,
2355 enum nl80211_iftype iftype)
2356 {
2357 if (!use_4addr) {
2358 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2359 return -EBUSY;
2360 return 0;
2361 }
2362
2363 switch (iftype) {
2364 case NL80211_IFTYPE_AP_VLAN:
2365 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2366 return 0;
2367 break;
2368 case NL80211_IFTYPE_STATION:
2369 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2370 return 0;
2371 break;
2372 default:
2373 break;
2374 }
2375
2376 return -EOPNOTSUPP;
2377 }
2378
2379 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2380 {
2381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2382 struct vif_params params;
2383 int err;
2384 enum nl80211_iftype otype, ntype;
2385 struct net_device *dev = info->user_ptr[1];
2386 u32 _flags, *flags = NULL;
2387 bool change = false;
2388
2389 memset(&params, 0, sizeof(params));
2390
2391 otype = ntype = dev->ieee80211_ptr->iftype;
2392
2393 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2394 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2395 if (otype != ntype)
2396 change = true;
2397 if (ntype > NL80211_IFTYPE_MAX)
2398 return -EINVAL;
2399 }
2400
2401 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2402 struct wireless_dev *wdev = dev->ieee80211_ptr;
2403
2404 if (ntype != NL80211_IFTYPE_MESH_POINT)
2405 return -EINVAL;
2406 if (netif_running(dev))
2407 return -EBUSY;
2408
2409 wdev_lock(wdev);
2410 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2411 IEEE80211_MAX_MESH_ID_LEN);
2412 wdev->mesh_id_up_len =
2413 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2414 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2415 wdev->mesh_id_up_len);
2416 wdev_unlock(wdev);
2417 }
2418
2419 if (info->attrs[NL80211_ATTR_4ADDR]) {
2420 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2421 change = true;
2422 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2423 if (err)
2424 return err;
2425 } else {
2426 params.use_4addr = -1;
2427 }
2428
2429 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2430 if (ntype != NL80211_IFTYPE_MONITOR)
2431 return -EINVAL;
2432 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2433 &_flags);
2434 if (err)
2435 return err;
2436
2437 flags = &_flags;
2438 change = true;
2439 }
2440
2441 if (change)
2442 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2443 else
2444 err = 0;
2445
2446 if (!err && params.use_4addr != -1)
2447 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2448
2449 return err;
2450 }
2451
2452 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2453 {
2454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2455 struct vif_params params;
2456 struct wireless_dev *wdev;
2457 struct sk_buff *msg;
2458 int err;
2459 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2460 u32 flags;
2461
2462 memset(&params, 0, sizeof(params));
2463
2464 if (!info->attrs[NL80211_ATTR_IFNAME])
2465 return -EINVAL;
2466
2467 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2468 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2469 if (type > NL80211_IFTYPE_MAX)
2470 return -EINVAL;
2471 }
2472
2473 if (!rdev->ops->add_virtual_intf ||
2474 !(rdev->wiphy.interface_modes & (1 << type)))
2475 return -EOPNOTSUPP;
2476
2477 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2478 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2479 ETH_ALEN);
2480 if (!is_valid_ether_addr(params.macaddr))
2481 return -EADDRNOTAVAIL;
2482 }
2483
2484 if (info->attrs[NL80211_ATTR_4ADDR]) {
2485 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2486 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2487 if (err)
2488 return err;
2489 }
2490
2491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2492 if (!msg)
2493 return -ENOMEM;
2494
2495 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2496 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2497 &flags);
2498 wdev = rdev_add_virtual_intf(rdev,
2499 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2500 type, err ? NULL : &flags, &params);
2501 if (IS_ERR(wdev)) {
2502 nlmsg_free(msg);
2503 return PTR_ERR(wdev);
2504 }
2505
2506 switch (type) {
2507 case NL80211_IFTYPE_MESH_POINT:
2508 if (!info->attrs[NL80211_ATTR_MESH_ID])
2509 break;
2510 wdev_lock(wdev);
2511 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2512 IEEE80211_MAX_MESH_ID_LEN);
2513 wdev->mesh_id_up_len =
2514 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2515 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2516 wdev->mesh_id_up_len);
2517 wdev_unlock(wdev);
2518 break;
2519 case NL80211_IFTYPE_P2P_DEVICE:
2520 /*
2521 * P2P Device doesn't have a netdev, so doesn't go
2522 * through the netdev notifier and must be added here
2523 */
2524 mutex_init(&wdev->mtx);
2525 INIT_LIST_HEAD(&wdev->event_list);
2526 spin_lock_init(&wdev->event_lock);
2527 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2528 spin_lock_init(&wdev->mgmt_registrations_lock);
2529
2530 mutex_lock(&rdev->devlist_mtx);
2531 wdev->identifier = ++rdev->wdev_id;
2532 list_add_rcu(&wdev->list, &rdev->wdev_list);
2533 rdev->devlist_generation++;
2534 mutex_unlock(&rdev->devlist_mtx);
2535 break;
2536 default:
2537 break;
2538 }
2539
2540 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2541 rdev, wdev) < 0) {
2542 nlmsg_free(msg);
2543 return -ENOBUFS;
2544 }
2545
2546 return genlmsg_reply(msg, info);
2547 }
2548
2549 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2550 {
2551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2552 struct wireless_dev *wdev = info->user_ptr[1];
2553
2554 if (!rdev->ops->del_virtual_intf)
2555 return -EOPNOTSUPP;
2556
2557 /*
2558 * If we remove a wireless device without a netdev then clear
2559 * user_ptr[1] so that nl80211_post_doit won't dereference it
2560 * to check if it needs to do dev_put(). Otherwise it crashes
2561 * since the wdev has been freed, unlike with a netdev where
2562 * we need the dev_put() for the netdev to really be freed.
2563 */
2564 if (!wdev->netdev)
2565 info->user_ptr[1] = NULL;
2566
2567 return rdev_del_virtual_intf(rdev, wdev);
2568 }
2569
2570 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2571 {
2572 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2573 struct net_device *dev = info->user_ptr[1];
2574 u16 noack_map;
2575
2576 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2577 return -EINVAL;
2578
2579 if (!rdev->ops->set_noack_map)
2580 return -EOPNOTSUPP;
2581
2582 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2583
2584 return rdev_set_noack_map(rdev, dev, noack_map);
2585 }
2586
2587 struct get_key_cookie {
2588 struct sk_buff *msg;
2589 int error;
2590 int idx;
2591 };
2592
2593 static void get_key_callback(void *c, struct key_params *params)
2594 {
2595 struct nlattr *key;
2596 struct get_key_cookie *cookie = c;
2597
2598 if ((params->key &&
2599 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2600 params->key_len, params->key)) ||
2601 (params->seq &&
2602 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2603 params->seq_len, params->seq)) ||
2604 (params->cipher &&
2605 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2606 params->cipher)))
2607 goto nla_put_failure;
2608
2609 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2610 if (!key)
2611 goto nla_put_failure;
2612
2613 if ((params->key &&
2614 nla_put(cookie->msg, NL80211_KEY_DATA,
2615 params->key_len, params->key)) ||
2616 (params->seq &&
2617 nla_put(cookie->msg, NL80211_KEY_SEQ,
2618 params->seq_len, params->seq)) ||
2619 (params->cipher &&
2620 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2621 params->cipher)))
2622 goto nla_put_failure;
2623
2624 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2625 goto nla_put_failure;
2626
2627 nla_nest_end(cookie->msg, key);
2628
2629 return;
2630 nla_put_failure:
2631 cookie->error = 1;
2632 }
2633
2634 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2635 {
2636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2637 int err;
2638 struct net_device *dev = info->user_ptr[1];
2639 u8 key_idx = 0;
2640 const u8 *mac_addr = NULL;
2641 bool pairwise;
2642 struct get_key_cookie cookie = {
2643 .error = 0,
2644 };
2645 void *hdr;
2646 struct sk_buff *msg;
2647
2648 if (info->attrs[NL80211_ATTR_KEY_IDX])
2649 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2650
2651 if (key_idx > 5)
2652 return -EINVAL;
2653
2654 if (info->attrs[NL80211_ATTR_MAC])
2655 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2656
2657 pairwise = !!mac_addr;
2658 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2659 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2660 if (kt >= NUM_NL80211_KEYTYPES)
2661 return -EINVAL;
2662 if (kt != NL80211_KEYTYPE_GROUP &&
2663 kt != NL80211_KEYTYPE_PAIRWISE)
2664 return -EINVAL;
2665 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2666 }
2667
2668 if (!rdev->ops->get_key)
2669 return -EOPNOTSUPP;
2670
2671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 if (!msg)
2673 return -ENOMEM;
2674
2675 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2676 NL80211_CMD_NEW_KEY);
2677 if (!hdr)
2678 goto nla_put_failure;
2679
2680 cookie.msg = msg;
2681 cookie.idx = key_idx;
2682
2683 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2684 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2685 goto nla_put_failure;
2686 if (mac_addr &&
2687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2688 goto nla_put_failure;
2689
2690 if (pairwise && mac_addr &&
2691 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2692 return -ENOENT;
2693
2694 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2695 get_key_callback);
2696
2697 if (err)
2698 goto free_msg;
2699
2700 if (cookie.error)
2701 goto nla_put_failure;
2702
2703 genlmsg_end(msg, hdr);
2704 return genlmsg_reply(msg, info);
2705
2706 nla_put_failure:
2707 err = -ENOBUFS;
2708 free_msg:
2709 nlmsg_free(msg);
2710 return err;
2711 }
2712
2713 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2714 {
2715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2716 struct key_parse key;
2717 int err;
2718 struct net_device *dev = info->user_ptr[1];
2719
2720 err = nl80211_parse_key(info, &key);
2721 if (err)
2722 return err;
2723
2724 if (key.idx < 0)
2725 return -EINVAL;
2726
2727 /* only support setting default key */
2728 if (!key.def && !key.defmgmt)
2729 return -EINVAL;
2730
2731 wdev_lock(dev->ieee80211_ptr);
2732
2733 if (key.def) {
2734 if (!rdev->ops->set_default_key) {
2735 err = -EOPNOTSUPP;
2736 goto out;
2737 }
2738
2739 err = nl80211_key_allowed(dev->ieee80211_ptr);
2740 if (err)
2741 goto out;
2742
2743 err = rdev_set_default_key(rdev, dev, key.idx,
2744 key.def_uni, key.def_multi);
2745
2746 if (err)
2747 goto out;
2748
2749 #ifdef CONFIG_CFG80211_WEXT
2750 dev->ieee80211_ptr->wext.default_key = key.idx;
2751 #endif
2752 } else {
2753 if (key.def_uni || !key.def_multi) {
2754 err = -EINVAL;
2755 goto out;
2756 }
2757
2758 if (!rdev->ops->set_default_mgmt_key) {
2759 err = -EOPNOTSUPP;
2760 goto out;
2761 }
2762
2763 err = nl80211_key_allowed(dev->ieee80211_ptr);
2764 if (err)
2765 goto out;
2766
2767 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2768 if (err)
2769 goto out;
2770
2771 #ifdef CONFIG_CFG80211_WEXT
2772 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2773 #endif
2774 }
2775
2776 out:
2777 wdev_unlock(dev->ieee80211_ptr);
2778
2779 return err;
2780 }
2781
2782 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2783 {
2784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2785 int err;
2786 struct net_device *dev = info->user_ptr[1];
2787 struct key_parse key;
2788 const u8 *mac_addr = NULL;
2789
2790 err = nl80211_parse_key(info, &key);
2791 if (err)
2792 return err;
2793
2794 if (!key.p.key)
2795 return -EINVAL;
2796
2797 if (info->attrs[NL80211_ATTR_MAC])
2798 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2799
2800 if (key.type == -1) {
2801 if (mac_addr)
2802 key.type = NL80211_KEYTYPE_PAIRWISE;
2803 else
2804 key.type = NL80211_KEYTYPE_GROUP;
2805 }
2806
2807 /* for now */
2808 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2809 key.type != NL80211_KEYTYPE_GROUP)
2810 return -EINVAL;
2811
2812 if (!rdev->ops->add_key)
2813 return -EOPNOTSUPP;
2814
2815 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2816 key.type == NL80211_KEYTYPE_PAIRWISE,
2817 mac_addr))
2818 return -EINVAL;
2819
2820 wdev_lock(dev->ieee80211_ptr);
2821 err = nl80211_key_allowed(dev->ieee80211_ptr);
2822 if (!err)
2823 err = rdev_add_key(rdev, dev, key.idx,
2824 key.type == NL80211_KEYTYPE_PAIRWISE,
2825 mac_addr, &key.p);
2826 wdev_unlock(dev->ieee80211_ptr);
2827
2828 return err;
2829 }
2830
2831 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2832 {
2833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2834 int err;
2835 struct net_device *dev = info->user_ptr[1];
2836 u8 *mac_addr = NULL;
2837 struct key_parse key;
2838
2839 err = nl80211_parse_key(info, &key);
2840 if (err)
2841 return err;
2842
2843 if (info->attrs[NL80211_ATTR_MAC])
2844 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2845
2846 if (key.type == -1) {
2847 if (mac_addr)
2848 key.type = NL80211_KEYTYPE_PAIRWISE;
2849 else
2850 key.type = NL80211_KEYTYPE_GROUP;
2851 }
2852
2853 /* for now */
2854 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2855 key.type != NL80211_KEYTYPE_GROUP)
2856 return -EINVAL;
2857
2858 if (!rdev->ops->del_key)
2859 return -EOPNOTSUPP;
2860
2861 wdev_lock(dev->ieee80211_ptr);
2862 err = nl80211_key_allowed(dev->ieee80211_ptr);
2863
2864 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2865 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2866 err = -ENOENT;
2867
2868 if (!err)
2869 err = rdev_del_key(rdev, dev, key.idx,
2870 key.type == NL80211_KEYTYPE_PAIRWISE,
2871 mac_addr);
2872
2873 #ifdef CONFIG_CFG80211_WEXT
2874 if (!err) {
2875 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2876 dev->ieee80211_ptr->wext.default_key = -1;
2877 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2878 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2879 }
2880 #endif
2881 wdev_unlock(dev->ieee80211_ptr);
2882
2883 return err;
2884 }
2885
2886 /* This function returns an error or the number of nested attributes */
2887 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2888 {
2889 struct nlattr *attr;
2890 int n_entries = 0, tmp;
2891
2892 nla_for_each_nested(attr, nl_attr, tmp) {
2893 if (nla_len(attr) != ETH_ALEN)
2894 return -EINVAL;
2895
2896 n_entries++;
2897 }
2898
2899 return n_entries;
2900 }
2901
2902 /*
2903 * This function parses ACL information and allocates memory for ACL data.
2904 * On successful return, the calling function is responsible to free the
2905 * ACL buffer returned by this function.
2906 */
2907 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2908 struct genl_info *info)
2909 {
2910 enum nl80211_acl_policy acl_policy;
2911 struct nlattr *attr;
2912 struct cfg80211_acl_data *acl;
2913 int i = 0, n_entries, tmp;
2914
2915 if (!wiphy->max_acl_mac_addrs)
2916 return ERR_PTR(-EOPNOTSUPP);
2917
2918 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2919 return ERR_PTR(-EINVAL);
2920
2921 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2922 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2923 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2924 return ERR_PTR(-EINVAL);
2925
2926 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2927 return ERR_PTR(-EINVAL);
2928
2929 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2930 if (n_entries < 0)
2931 return ERR_PTR(n_entries);
2932
2933 if (n_entries > wiphy->max_acl_mac_addrs)
2934 return ERR_PTR(-ENOTSUPP);
2935
2936 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2937 GFP_KERNEL);
2938 if (!acl)
2939 return ERR_PTR(-ENOMEM);
2940
2941 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2942 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2943 i++;
2944 }
2945
2946 acl->n_acl_entries = n_entries;
2947 acl->acl_policy = acl_policy;
2948
2949 return acl;
2950 }
2951
2952 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2953 {
2954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2955 struct net_device *dev = info->user_ptr[1];
2956 struct cfg80211_acl_data *acl;
2957 int err;
2958
2959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2961 return -EOPNOTSUPP;
2962
2963 if (!dev->ieee80211_ptr->beacon_interval)
2964 return -EINVAL;
2965
2966 acl = parse_acl_data(&rdev->wiphy, info);
2967 if (IS_ERR(acl))
2968 return PTR_ERR(acl);
2969
2970 err = rdev_set_mac_acl(rdev, dev, acl);
2971
2972 kfree(acl);
2973
2974 return err;
2975 }
2976
2977 static int nl80211_parse_beacon(struct genl_info *info,
2978 struct cfg80211_beacon_data *bcn)
2979 {
2980 bool haveinfo = false;
2981
2982 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2983 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2984 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2985 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2986 return -EINVAL;
2987
2988 memset(bcn, 0, sizeof(*bcn));
2989
2990 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2991 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2992 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2993 if (!bcn->head_len)
2994 return -EINVAL;
2995 haveinfo = true;
2996 }
2997
2998 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2999 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
3000 bcn->tail_len =
3001 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
3002 haveinfo = true;
3003 }
3004
3005 if (!haveinfo)
3006 return -EINVAL;
3007
3008 if (info->attrs[NL80211_ATTR_IE]) {
3009 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
3010 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3011 }
3012
3013 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3014 bcn->proberesp_ies =
3015 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3016 bcn->proberesp_ies_len =
3017 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
3018 }
3019
3020 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3021 bcn->assocresp_ies =
3022 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3023 bcn->assocresp_ies_len =
3024 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3025 }
3026
3027 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
3028 bcn->probe_resp =
3029 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
3030 bcn->probe_resp_len =
3031 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
3032 }
3033
3034 return 0;
3035 }
3036
3037 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3038 struct cfg80211_ap_settings *params)
3039 {
3040 struct wireless_dev *wdev;
3041 bool ret = false;
3042
3043 mutex_lock(&rdev->devlist_mtx);
3044
3045 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3046 if (wdev->iftype != NL80211_IFTYPE_AP &&
3047 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3048 continue;
3049
3050 if (!wdev->preset_chandef.chan)
3051 continue;
3052
3053 params->chandef = wdev->preset_chandef;
3054 ret = true;
3055 break;
3056 }
3057
3058 mutex_unlock(&rdev->devlist_mtx);
3059
3060 return ret;
3061 }
3062
3063 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3064 enum nl80211_auth_type auth_type,
3065 enum nl80211_commands cmd)
3066 {
3067 if (auth_type > NL80211_AUTHTYPE_MAX)
3068 return false;
3069
3070 switch (cmd) {
3071 case NL80211_CMD_AUTHENTICATE:
3072 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3073 auth_type == NL80211_AUTHTYPE_SAE)
3074 return false;
3075 return true;
3076 case NL80211_CMD_CONNECT:
3077 case NL80211_CMD_START_AP:
3078 /* SAE not supported yet */
3079 if (auth_type == NL80211_AUTHTYPE_SAE)
3080 return false;
3081 return true;
3082 default:
3083 return false;
3084 }
3085 }
3086
3087 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3088 {
3089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3090 struct net_device *dev = info->user_ptr[1];
3091 struct wireless_dev *wdev = dev->ieee80211_ptr;
3092 struct cfg80211_ap_settings params;
3093 int err;
3094 u8 radar_detect_width = 0;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3098 return -EOPNOTSUPP;
3099
3100 if (!rdev->ops->start_ap)
3101 return -EOPNOTSUPP;
3102
3103 if (wdev->beacon_interval)
3104 return -EALREADY;
3105
3106 memset(&params, 0, sizeof(params));
3107
3108 /* these are required for START_AP */
3109 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3110 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3111 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3112 return -EINVAL;
3113
3114 err = nl80211_parse_beacon(info, &params.beacon);
3115 if (err)
3116 return err;
3117
3118 params.beacon_interval =
3119 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3120 params.dtim_period =
3121 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3122
3123 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3124 if (err)
3125 return err;
3126
3127 /*
3128 * In theory, some of these attributes should be required here
3129 * but since they were not used when the command was originally
3130 * added, keep them optional for old user space programs to let
3131 * them continue to work with drivers that do not need the
3132 * additional information -- drivers must check!
3133 */
3134 if (info->attrs[NL80211_ATTR_SSID]) {
3135 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3136 params.ssid_len =
3137 nla_len(info->attrs[NL80211_ATTR_SSID]);
3138 if (params.ssid_len == 0 ||
3139 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3140 return -EINVAL;
3141 }
3142
3143 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3144 params.hidden_ssid = nla_get_u32(
3145 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3146 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3147 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3148 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3149 return -EINVAL;
3150 }
3151
3152 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3153
3154 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3155 params.auth_type = nla_get_u32(
3156 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3157 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3158 NL80211_CMD_START_AP))
3159 return -EINVAL;
3160 } else
3161 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3162
3163 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3164 NL80211_MAX_NR_CIPHER_SUITES);
3165 if (err)
3166 return err;
3167
3168 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3169 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3170 return -EOPNOTSUPP;
3171 params.inactivity_timeout = nla_get_u16(
3172 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3173 }
3174
3175 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3176 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3177 return -EINVAL;
3178 params.p2p_ctwindow =
3179 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3180 if (params.p2p_ctwindow > 127)
3181 return -EINVAL;
3182 if (params.p2p_ctwindow != 0 &&
3183 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3184 return -EINVAL;
3185 }
3186
3187 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3188 u8 tmp;
3189
3190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3191 return -EINVAL;
3192 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3193 if (tmp > 1)
3194 return -EINVAL;
3195 params.p2p_opp_ps = tmp;
3196 if (params.p2p_opp_ps != 0 &&
3197 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3198 return -EINVAL;
3199 }
3200
3201 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3202 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3203 if (err)
3204 return err;
3205 } else if (wdev->preset_chandef.chan) {
3206 params.chandef = wdev->preset_chandef;
3207 } else if (!nl80211_get_ap_channel(rdev, &params))
3208 return -EINVAL;
3209
3210 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3211 return -EINVAL;
3212
3213 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3214 if (err < 0)
3215 return err;
3216 if (err) {
3217 radar_detect_width = BIT(params.chandef.width);
3218 params.radar_required = true;
3219 }
3220
3221 mutex_lock(&rdev->devlist_mtx);
3222 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3223 params.chandef.chan,
3224 CHAN_MODE_SHARED,
3225 radar_detect_width);
3226 mutex_unlock(&rdev->devlist_mtx);
3227
3228 if (err)
3229 return err;
3230
3231 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3232 params.acl = parse_acl_data(&rdev->wiphy, info);
3233 if (IS_ERR(params.acl))
3234 return PTR_ERR(params.acl);
3235 }
3236
3237 err = rdev_start_ap(rdev, dev, &params);
3238 if (!err) {
3239 wdev->preset_chandef = params.chandef;
3240 wdev->beacon_interval = params.beacon_interval;
3241 wdev->channel = params.chandef.chan;
3242 wdev->ssid_len = params.ssid_len;
3243 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3244 }
3245
3246 kfree(params.acl);
3247
3248 return err;
3249 }
3250
3251 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3252 {
3253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254 struct net_device *dev = info->user_ptr[1];
3255 struct wireless_dev *wdev = dev->ieee80211_ptr;
3256 struct cfg80211_beacon_data params;
3257 int err;
3258
3259 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3260 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3261 return -EOPNOTSUPP;
3262
3263 if (!rdev->ops->change_beacon)
3264 return -EOPNOTSUPP;
3265
3266 if (!wdev->beacon_interval)
3267 return -EINVAL;
3268
3269 err = nl80211_parse_beacon(info, &params);
3270 if (err)
3271 return err;
3272
3273 return rdev_change_beacon(rdev, dev, &params);
3274 }
3275
3276 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3277 {
3278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279 struct net_device *dev = info->user_ptr[1];
3280
3281 return cfg80211_stop_ap(rdev, dev);
3282 }
3283
3284 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3285 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3286 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3287 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3288 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3289 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3290 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3291 };
3292
3293 static int parse_station_flags(struct genl_info *info,
3294 enum nl80211_iftype iftype,
3295 struct station_parameters *params)
3296 {
3297 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3298 struct nlattr *nla;
3299 int flag;
3300
3301 /*
3302 * Try parsing the new attribute first so userspace
3303 * can specify both for older kernels.
3304 */
3305 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3306 if (nla) {
3307 struct nl80211_sta_flag_update *sta_flags;
3308
3309 sta_flags = nla_data(nla);
3310 params->sta_flags_mask = sta_flags->mask;
3311 params->sta_flags_set = sta_flags->set;
3312 params->sta_flags_set &= params->sta_flags_mask;
3313 if ((params->sta_flags_mask |
3314 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3315 return -EINVAL;
3316 return 0;
3317 }
3318
3319 /* if present, parse the old attribute */
3320
3321 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3322 if (!nla)
3323 return 0;
3324
3325 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3326 nla, sta_flags_policy))
3327 return -EINVAL;
3328
3329 /*
3330 * Only allow certain flags for interface types so that
3331 * other attributes are silently ignored. Remember that
3332 * this is backward compatibility code with old userspace
3333 * and shouldn't be hit in other cases anyway.
3334 */
3335 switch (iftype) {
3336 case NL80211_IFTYPE_AP:
3337 case NL80211_IFTYPE_AP_VLAN:
3338 case NL80211_IFTYPE_P2P_GO:
3339 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3340 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3341 BIT(NL80211_STA_FLAG_WME) |
3342 BIT(NL80211_STA_FLAG_MFP);
3343 break;
3344 case NL80211_IFTYPE_P2P_CLIENT:
3345 case NL80211_IFTYPE_STATION:
3346 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3347 BIT(NL80211_STA_FLAG_TDLS_PEER);
3348 break;
3349 case NL80211_IFTYPE_MESH_POINT:
3350 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3351 BIT(NL80211_STA_FLAG_MFP) |
3352 BIT(NL80211_STA_FLAG_AUTHORIZED);
3353 default:
3354 return -EINVAL;
3355 }
3356
3357 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3358 if (flags[flag]) {
3359 params->sta_flags_set |= (1<<flag);
3360
3361 /* no longer support new API additions in old API */
3362 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3363 return -EINVAL;
3364 }
3365 }
3366
3367 return 0;
3368 }
3369
3370 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3371 int attr)
3372 {
3373 struct nlattr *rate;
3374 u32 bitrate;
3375 u16 bitrate_compat;
3376
3377 rate = nla_nest_start(msg, attr);
3378 if (!rate)
3379 return false;
3380
3381 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3382 bitrate = cfg80211_calculate_bitrate(info);
3383 /* report 16-bit bitrate only if we can */
3384 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3385 if (bitrate > 0 &&
3386 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3387 return false;
3388 if (bitrate_compat > 0 &&
3389 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3390 return false;
3391
3392 if (info->flags & RATE_INFO_FLAGS_MCS) {
3393 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3394 return false;
3395 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3396 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3397 return false;
3398 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3399 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3400 return false;
3401 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3402 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3403 return false;
3404 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3405 return false;
3406 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3407 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3408 return false;
3409 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3410 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3411 return false;
3412 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3413 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3414 return false;
3415 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3416 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3417 return false;
3418 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3419 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3420 return false;
3421 }
3422
3423 nla_nest_end(msg, rate);
3424 return true;
3425 }
3426
3427 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3428 int flags,
3429 struct cfg80211_registered_device *rdev,
3430 struct net_device *dev,
3431 const u8 *mac_addr, struct station_info *sinfo)
3432 {
3433 void *hdr;
3434 struct nlattr *sinfoattr, *bss_param;
3435
3436 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3437 if (!hdr)
3438 return -1;
3439
3440 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3442 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3443 goto nla_put_failure;
3444
3445 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3446 if (!sinfoattr)
3447 goto nla_put_failure;
3448 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3449 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3450 sinfo->connected_time))
3451 goto nla_put_failure;
3452 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3453 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3454 sinfo->inactive_time))
3455 goto nla_put_failure;
3456 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3457 STATION_INFO_RX_BYTES64)) &&
3458 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3459 (u32)sinfo->rx_bytes))
3460 goto nla_put_failure;
3461 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3462 STATION_INFO_TX_BYTES64)) &&
3463 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3464 (u32)sinfo->tx_bytes))
3465 goto nla_put_failure;
3466 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3467 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3468 sinfo->rx_bytes))
3469 goto nla_put_failure;
3470 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3471 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3472 sinfo->tx_bytes))
3473 goto nla_put_failure;
3474 if ((sinfo->filled & STATION_INFO_LLID) &&
3475 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3476 goto nla_put_failure;
3477 if ((sinfo->filled & STATION_INFO_PLID) &&
3478 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3479 goto nla_put_failure;
3480 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3481 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3482 sinfo->plink_state))
3483 goto nla_put_failure;
3484 switch (rdev->wiphy.signal_type) {
3485 case CFG80211_SIGNAL_TYPE_MBM:
3486 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3487 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3488 sinfo->signal))
3489 goto nla_put_failure;
3490 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3491 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3492 sinfo->signal_avg))
3493 goto nla_put_failure;
3494 break;
3495 default:
3496 break;
3497 }
3498 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3499 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3500 NL80211_STA_INFO_TX_BITRATE))
3501 goto nla_put_failure;
3502 }
3503 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3504 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3505 NL80211_STA_INFO_RX_BITRATE))
3506 goto nla_put_failure;
3507 }
3508 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3509 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3510 sinfo->rx_packets))
3511 goto nla_put_failure;
3512 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3513 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3514 sinfo->tx_packets))
3515 goto nla_put_failure;
3516 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3517 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3518 sinfo->tx_retries))
3519 goto nla_put_failure;
3520 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3521 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3522 sinfo->tx_failed))
3523 goto nla_put_failure;
3524 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3525 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3526 sinfo->beacon_loss_count))
3527 goto nla_put_failure;
3528 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3529 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3530 sinfo->local_pm))
3531 goto nla_put_failure;
3532 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3533 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3534 sinfo->peer_pm))
3535 goto nla_put_failure;
3536 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3537 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3538 sinfo->nonpeer_pm))
3539 goto nla_put_failure;
3540 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3541 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3542 if (!bss_param)
3543 goto nla_put_failure;
3544
3545 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3546 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3547 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3548 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3549 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3550 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3551 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3552 sinfo->bss_param.dtim_period) ||
3553 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3554 sinfo->bss_param.beacon_interval))
3555 goto nla_put_failure;
3556
3557 nla_nest_end(msg, bss_param);
3558 }
3559 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3560 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3561 sizeof(struct nl80211_sta_flag_update),
3562 &sinfo->sta_flags))
3563 goto nla_put_failure;
3564 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3565 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3566 sinfo->t_offset))
3567 goto nla_put_failure;
3568 nla_nest_end(msg, sinfoattr);
3569
3570 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3571 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3572 sinfo->assoc_req_ies))
3573 goto nla_put_failure;
3574
3575 return genlmsg_end(msg, hdr);
3576
3577 nla_put_failure:
3578 genlmsg_cancel(msg, hdr);
3579 return -EMSGSIZE;
3580 }
3581
3582 static int nl80211_dump_station(struct sk_buff *skb,
3583 struct netlink_callback *cb)
3584 {
3585 struct station_info sinfo;
3586 struct cfg80211_registered_device *dev;
3587 struct wireless_dev *wdev;
3588 u8 mac_addr[ETH_ALEN];
3589 int sta_idx = cb->args[2];
3590 int err;
3591
3592 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3593 if (err)
3594 return err;
3595
3596 if (!wdev->netdev) {
3597 err = -EINVAL;
3598 goto out_err;
3599 }
3600
3601 if (!dev->ops->dump_station) {
3602 err = -EOPNOTSUPP;
3603 goto out_err;
3604 }
3605
3606 while (1) {
3607 memset(&sinfo, 0, sizeof(sinfo));
3608 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3609 mac_addr, &sinfo);
3610 if (err == -ENOENT)
3611 break;
3612 if (err)
3613 goto out_err;
3614
3615 if (nl80211_send_station(skb,
3616 NETLINK_CB(cb->skb).portid,
3617 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3618 dev, wdev->netdev, mac_addr,
3619 &sinfo) < 0)
3620 goto out;
3621
3622 sta_idx++;
3623 }
3624
3625
3626 out:
3627 cb->args[2] = sta_idx;
3628 err = skb->len;
3629 out_err:
3630 nl80211_finish_wdev_dump(dev);
3631
3632 return err;
3633 }
3634
3635 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3636 {
3637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3638 struct net_device *dev = info->user_ptr[1];
3639 struct station_info sinfo;
3640 struct sk_buff *msg;
3641 u8 *mac_addr = NULL;
3642 int err;
3643
3644 memset(&sinfo, 0, sizeof(sinfo));
3645
3646 if (!info->attrs[NL80211_ATTR_MAC])
3647 return -EINVAL;
3648
3649 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3650
3651 if (!rdev->ops->get_station)
3652 return -EOPNOTSUPP;
3653
3654 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3655 if (err)
3656 return err;
3657
3658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3659 if (!msg)
3660 return -ENOMEM;
3661
3662 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3663 rdev, dev, mac_addr, &sinfo) < 0) {
3664 nlmsg_free(msg);
3665 return -ENOBUFS;
3666 }
3667
3668 return genlmsg_reply(msg, info);
3669 }
3670
3671 int cfg80211_check_station_change(struct wiphy *wiphy,
3672 struct station_parameters *params,
3673 enum cfg80211_station_type statype)
3674 {
3675 if (params->listen_interval != -1)
3676 return -EINVAL;
3677 if (params->aid)
3678 return -EINVAL;
3679
3680 /* When you run into this, adjust the code below for the new flag */
3681 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3682
3683 switch (statype) {
3684 case CFG80211_STA_MESH_PEER_KERNEL:
3685 case CFG80211_STA_MESH_PEER_USER:
3686 /*
3687 * No ignoring the TDLS flag here -- the userspace mesh
3688 * code doesn't have the bug of including TDLS in the
3689 * mask everywhere.
3690 */
3691 if (params->sta_flags_mask &
3692 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3693 BIT(NL80211_STA_FLAG_MFP) |
3694 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3695 return -EINVAL;
3696 break;
3697 case CFG80211_STA_TDLS_PEER_SETUP:
3698 case CFG80211_STA_TDLS_PEER_ACTIVE:
3699 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3700 return -EINVAL;
3701 /* ignore since it can't change */
3702 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3703 break;
3704 default:
3705 /* disallow mesh-specific things */
3706 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3707 return -EINVAL;
3708 if (params->local_pm)
3709 return -EINVAL;
3710 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3711 return -EINVAL;
3712 }
3713
3714 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3715 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3716 /* TDLS can't be set, ... */
3717 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3718 return -EINVAL;
3719 /*
3720 * ... but don't bother the driver with it. This works around
3721 * a hostapd/wpa_supplicant issue -- it always includes the
3722 * TLDS_PEER flag in the mask even for AP mode.
3723 */
3724 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3725 }
3726
3727 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3728 /* reject other things that can't change */
3729 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3730 return -EINVAL;
3731 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3732 return -EINVAL;
3733 if (params->supported_rates)
3734 return -EINVAL;
3735 if (params->ext_capab || params->ht_capa || params->vht_capa)
3736 return -EINVAL;
3737 }
3738
3739 if (statype != CFG80211_STA_AP_CLIENT) {
3740 if (params->vlan)
3741 return -EINVAL;
3742 }
3743
3744 switch (statype) {
3745 case CFG80211_STA_AP_MLME_CLIENT:
3746 /* Use this only for authorizing/unauthorizing a station */
3747 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3748 return -EOPNOTSUPP;
3749 break;
3750 case CFG80211_STA_AP_CLIENT:
3751 /* accept only the listed bits */
3752 if (params->sta_flags_mask &
3753 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3754 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3755 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3756 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3757 BIT(NL80211_STA_FLAG_WME) |
3758 BIT(NL80211_STA_FLAG_MFP)))
3759 return -EINVAL;
3760
3761 /* but authenticated/associated only if driver handles it */
3762 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3763 params->sta_flags_mask &
3764 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3765 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3766 return -EINVAL;
3767 break;
3768 case CFG80211_STA_IBSS:
3769 case CFG80211_STA_AP_STA:
3770 /* reject any changes other than AUTHORIZED */
3771 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3772 return -EINVAL;
3773 break;
3774 case CFG80211_STA_TDLS_PEER_SETUP:
3775 /* reject any changes other than AUTHORIZED or WME */
3776 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3777 BIT(NL80211_STA_FLAG_WME)))
3778 return -EINVAL;
3779 /* force (at least) rates when authorizing */
3780 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3781 !params->supported_rates)
3782 return -EINVAL;
3783 break;
3784 case CFG80211_STA_TDLS_PEER_ACTIVE:
3785 /* reject any changes */
3786 return -EINVAL;
3787 case CFG80211_STA_MESH_PEER_KERNEL:
3788 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3789 return -EINVAL;
3790 break;
3791 case CFG80211_STA_MESH_PEER_USER:
3792 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3793 return -EINVAL;
3794 break;
3795 }
3796
3797 return 0;
3798 }
3799 EXPORT_SYMBOL(cfg80211_check_station_change);
3800
3801 /*
3802 * Get vlan interface making sure it is running and on the right wiphy.
3803 */
3804 static struct net_device *get_vlan(struct genl_info *info,
3805 struct cfg80211_registered_device *rdev)
3806 {
3807 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3808 struct net_device *v;
3809 int ret;
3810
3811 if (!vlanattr)
3812 return NULL;
3813
3814 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3815 if (!v)
3816 return ERR_PTR(-ENODEV);
3817
3818 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3819 ret = -EINVAL;
3820 goto error;
3821 }
3822
3823 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3824 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3825 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3826 ret = -EINVAL;
3827 goto error;
3828 }
3829
3830 if (!netif_running(v)) {
3831 ret = -ENETDOWN;
3832 goto error;
3833 }
3834
3835 return v;
3836 error:
3837 dev_put(v);
3838 return ERR_PTR(ret);
3839 }
3840
3841 static struct nla_policy
3842 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3843 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3844 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3845 };
3846
3847 static int nl80211_parse_sta_wme(struct genl_info *info,
3848 struct station_parameters *params)
3849 {
3850 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3851 struct nlattr *nla;
3852 int err;
3853
3854 /* parse WME attributes if present */
3855 if (!info->attrs[NL80211_ATTR_STA_WME])
3856 return 0;
3857
3858 nla = info->attrs[NL80211_ATTR_STA_WME];
3859 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3860 nl80211_sta_wme_policy);
3861 if (err)
3862 return err;
3863
3864 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3865 params->uapsd_queues = nla_get_u8(
3866 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3867 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3868 return -EINVAL;
3869
3870 if (tb[NL80211_STA_WME_MAX_SP])
3871 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3872
3873 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3874 return -EINVAL;
3875
3876 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3877
3878 return 0;
3879 }
3880
3881 static int nl80211_set_station_tdls(struct genl_info *info,
3882 struct station_parameters *params)
3883 {
3884 /* Dummy STA entry gets updated once the peer capabilities are known */
3885 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3886 params->ht_capa =
3887 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3888 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3889 params->vht_capa =
3890 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3891
3892 return nl80211_parse_sta_wme(info, params);
3893 }
3894
3895 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3896 {
3897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3898 struct net_device *dev = info->user_ptr[1];
3899 struct station_parameters params;
3900 u8 *mac_addr;
3901 int err;
3902
3903 memset(&params, 0, sizeof(params));
3904
3905 params.listen_interval = -1;
3906
3907 if (!rdev->ops->change_station)
3908 return -EOPNOTSUPP;
3909
3910 if (info->attrs[NL80211_ATTR_STA_AID])
3911 return -EINVAL;
3912
3913 if (!info->attrs[NL80211_ATTR_MAC])
3914 return -EINVAL;
3915
3916 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3917
3918 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3919 params.supported_rates =
3920 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3921 params.supported_rates_len =
3922 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3923 }
3924
3925 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3926 params.capability =
3927 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3928 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3929 }
3930
3931 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3932 params.ext_capab =
3933 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3934 params.ext_capab_len =
3935 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3936 }
3937
3938 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3939 return -EINVAL;
3940
3941 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3942 return -EINVAL;
3943
3944 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3945 params.plink_action =
3946 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3947 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3948 return -EINVAL;
3949 }
3950
3951 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3952 params.plink_state =
3953 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3954 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3955 return -EINVAL;
3956 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3957 }
3958
3959 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3960 enum nl80211_mesh_power_mode pm = nla_get_u32(
3961 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3962
3963 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3964 pm > NL80211_MESH_POWER_MAX)
3965 return -EINVAL;
3966
3967 params.local_pm = pm;
3968 }
3969
3970 /* Include parameters for TDLS peer (will check later) */
3971 err = nl80211_set_station_tdls(info, &params);
3972 if (err)
3973 return err;
3974
3975 params.vlan = get_vlan(info, rdev);
3976 if (IS_ERR(params.vlan))
3977 return PTR_ERR(params.vlan);
3978
3979 switch (dev->ieee80211_ptr->iftype) {
3980 case NL80211_IFTYPE_AP:
3981 case NL80211_IFTYPE_AP_VLAN:
3982 case NL80211_IFTYPE_P2P_GO:
3983 case NL80211_IFTYPE_P2P_CLIENT:
3984 case NL80211_IFTYPE_STATION:
3985 case NL80211_IFTYPE_ADHOC:
3986 case NL80211_IFTYPE_MESH_POINT:
3987 break;
3988 default:
3989 err = -EOPNOTSUPP;
3990 goto out_put_vlan;
3991 }
3992
3993 /* driver will call cfg80211_check_station_change() */
3994 err = rdev_change_station(rdev, dev, mac_addr, &params);
3995
3996 out_put_vlan:
3997 if (params.vlan)
3998 dev_put(params.vlan);
3999
4000 return err;
4001 }
4002
4003 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4004 {
4005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4006 int err;
4007 struct net_device *dev = info->user_ptr[1];
4008 struct station_parameters params;
4009 u8 *mac_addr = NULL;
4010
4011 memset(&params, 0, sizeof(params));
4012
4013 if (!rdev->ops->add_station)
4014 return -EOPNOTSUPP;
4015
4016 if (!info->attrs[NL80211_ATTR_MAC])
4017 return -EINVAL;
4018
4019 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4020 return -EINVAL;
4021
4022 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4023 return -EINVAL;
4024
4025 if (!info->attrs[NL80211_ATTR_STA_AID])
4026 return -EINVAL;
4027
4028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4029 params.supported_rates =
4030 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4031 params.supported_rates_len =
4032 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4033 params.listen_interval =
4034 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4035
4036 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4037 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4038 return -EINVAL;
4039
4040 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4041 params.capability =
4042 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4043 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4044 }
4045
4046 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4047 params.ext_capab =
4048 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4049 params.ext_capab_len =
4050 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4051 }
4052
4053 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4054 params.ht_capa =
4055 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4056
4057 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4058 params.vht_capa =
4059 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4060
4061 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4062 params.plink_action =
4063 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4064 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4065 return -EINVAL;
4066 }
4067
4068 err = nl80211_parse_sta_wme(info, &params);
4069 if (err)
4070 return err;
4071
4072 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4073 return -EINVAL;
4074
4075 /* When you run into this, adjust the code below for the new flag */
4076 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4077
4078 switch (dev->ieee80211_ptr->iftype) {
4079 case NL80211_IFTYPE_AP:
4080 case NL80211_IFTYPE_AP_VLAN:
4081 case NL80211_IFTYPE_P2P_GO:
4082 /* ignore WME attributes if iface/sta is not capable */
4083 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4084 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4085 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4086
4087 /* TDLS peers cannot be added */
4088 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4089 return -EINVAL;
4090 /* but don't bother the driver with it */
4091 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4092
4093 /* allow authenticated/associated only if driver handles it */
4094 if (!(rdev->wiphy.features &
4095 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4096 params.sta_flags_mask &
4097 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4098 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4099 return -EINVAL;
4100
4101 /* must be last in here for error handling */
4102 params.vlan = get_vlan(info, rdev);
4103 if (IS_ERR(params.vlan))
4104 return PTR_ERR(params.vlan);
4105 break;
4106 case NL80211_IFTYPE_MESH_POINT:
4107 /* ignore uAPSD data */
4108 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4109
4110 /* associated is disallowed */
4111 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4112 return -EINVAL;
4113 /* TDLS peers cannot be added */
4114 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4115 return -EINVAL;
4116 break;
4117 case NL80211_IFTYPE_STATION:
4118 case NL80211_IFTYPE_P2P_CLIENT:
4119 /* ignore uAPSD data */
4120 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4121
4122 /* these are disallowed */
4123 if (params.sta_flags_mask &
4124 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4125 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4126 return -EINVAL;
4127 /* Only TDLS peers can be added */
4128 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4129 return -EINVAL;
4130 /* Can only add if TDLS ... */
4131 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4132 return -EOPNOTSUPP;
4133 /* ... with external setup is supported */
4134 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4135 return -EOPNOTSUPP;
4136 /*
4137 * Older wpa_supplicant versions always mark the TDLS peer
4138 * as authorized, but it shouldn't yet be.
4139 */
4140 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4141 break;
4142 default:
4143 return -EOPNOTSUPP;
4144 }
4145
4146 /* be aware of params.vlan when changing code here */
4147
4148 err = rdev_add_station(rdev, dev, mac_addr, &params);
4149
4150 if (params.vlan)
4151 dev_put(params.vlan);
4152 return err;
4153 }
4154
4155 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4156 {
4157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4158 struct net_device *dev = info->user_ptr[1];
4159 u8 *mac_addr = NULL;
4160
4161 if (info->attrs[NL80211_ATTR_MAC])
4162 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4163
4164 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4165 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4166 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4167 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4168 return -EINVAL;
4169
4170 if (!rdev->ops->del_station)
4171 return -EOPNOTSUPP;
4172
4173 return rdev_del_station(rdev, dev, mac_addr);
4174 }
4175
4176 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4177 int flags, struct net_device *dev,
4178 u8 *dst, u8 *next_hop,
4179 struct mpath_info *pinfo)
4180 {
4181 void *hdr;
4182 struct nlattr *pinfoattr;
4183
4184 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4185 if (!hdr)
4186 return -1;
4187
4188 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4189 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4190 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4191 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4192 goto nla_put_failure;
4193
4194 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4195 if (!pinfoattr)
4196 goto nla_put_failure;
4197 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4198 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4199 pinfo->frame_qlen))
4200 goto nla_put_failure;
4201 if (((pinfo->filled & MPATH_INFO_SN) &&
4202 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4203 ((pinfo->filled & MPATH_INFO_METRIC) &&
4204 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4205 pinfo->metric)) ||
4206 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4207 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4208 pinfo->exptime)) ||
4209 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4210 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4211 pinfo->flags)) ||
4212 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4213 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4214 pinfo->discovery_timeout)) ||
4215 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4216 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4217 pinfo->discovery_retries)))
4218 goto nla_put_failure;
4219
4220 nla_nest_end(msg, pinfoattr);
4221
4222 return genlmsg_end(msg, hdr);
4223
4224 nla_put_failure:
4225 genlmsg_cancel(msg, hdr);
4226 return -EMSGSIZE;
4227 }
4228
4229 static int nl80211_dump_mpath(struct sk_buff *skb,
4230 struct netlink_callback *cb)
4231 {
4232 struct mpath_info pinfo;
4233 struct cfg80211_registered_device *dev;
4234 struct wireless_dev *wdev;
4235 u8 dst[ETH_ALEN];
4236 u8 next_hop[ETH_ALEN];
4237 int path_idx = cb->args[2];
4238 int err;
4239
4240 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4241 if (err)
4242 return err;
4243
4244 if (!dev->ops->dump_mpath) {
4245 err = -EOPNOTSUPP;
4246 goto out_err;
4247 }
4248
4249 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4250 err = -EOPNOTSUPP;
4251 goto out_err;
4252 }
4253
4254 while (1) {
4255 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4256 next_hop, &pinfo);
4257 if (err == -ENOENT)
4258 break;
4259 if (err)
4260 goto out_err;
4261
4262 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4263 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4264 wdev->netdev, dst, next_hop,
4265 &pinfo) < 0)
4266 goto out;
4267
4268 path_idx++;
4269 }
4270
4271
4272 out:
4273 cb->args[2] = path_idx;
4274 err = skb->len;
4275 out_err:
4276 nl80211_finish_wdev_dump(dev);
4277 return err;
4278 }
4279
4280 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4281 {
4282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4283 int err;
4284 struct net_device *dev = info->user_ptr[1];
4285 struct mpath_info pinfo;
4286 struct sk_buff *msg;
4287 u8 *dst = NULL;
4288 u8 next_hop[ETH_ALEN];
4289
4290 memset(&pinfo, 0, sizeof(pinfo));
4291
4292 if (!info->attrs[NL80211_ATTR_MAC])
4293 return -EINVAL;
4294
4295 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4296
4297 if (!rdev->ops->get_mpath)
4298 return -EOPNOTSUPP;
4299
4300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4301 return -EOPNOTSUPP;
4302
4303 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4304 if (err)
4305 return err;
4306
4307 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4308 if (!msg)
4309 return -ENOMEM;
4310
4311 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4312 dev, dst, next_hop, &pinfo) < 0) {
4313 nlmsg_free(msg);
4314 return -ENOBUFS;
4315 }
4316
4317 return genlmsg_reply(msg, info);
4318 }
4319
4320 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4321 {
4322 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4323 struct net_device *dev = info->user_ptr[1];
4324 u8 *dst = NULL;
4325 u8 *next_hop = NULL;
4326
4327 if (!info->attrs[NL80211_ATTR_MAC])
4328 return -EINVAL;
4329
4330 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4331 return -EINVAL;
4332
4333 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4334 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4335
4336 if (!rdev->ops->change_mpath)
4337 return -EOPNOTSUPP;
4338
4339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4340 return -EOPNOTSUPP;
4341
4342 return rdev_change_mpath(rdev, dev, dst, next_hop);
4343 }
4344
4345 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4346 {
4347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4348 struct net_device *dev = info->user_ptr[1];
4349 u8 *dst = NULL;
4350 u8 *next_hop = NULL;
4351
4352 if (!info->attrs[NL80211_ATTR_MAC])
4353 return -EINVAL;
4354
4355 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4356 return -EINVAL;
4357
4358 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4359 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4360
4361 if (!rdev->ops->add_mpath)
4362 return -EOPNOTSUPP;
4363
4364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4365 return -EOPNOTSUPP;
4366
4367 return rdev_add_mpath(rdev, dev, dst, next_hop);
4368 }
4369
4370 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4371 {
4372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373 struct net_device *dev = info->user_ptr[1];
4374 u8 *dst = NULL;
4375
4376 if (info->attrs[NL80211_ATTR_MAC])
4377 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4378
4379 if (!rdev->ops->del_mpath)
4380 return -EOPNOTSUPP;
4381
4382 return rdev_del_mpath(rdev, dev, dst);
4383 }
4384
4385 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4386 {
4387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4388 struct net_device *dev = info->user_ptr[1];
4389 struct bss_parameters params;
4390
4391 memset(&params, 0, sizeof(params));
4392 /* default to not changing parameters */
4393 params.use_cts_prot = -1;
4394 params.use_short_preamble = -1;
4395 params.use_short_slot_time = -1;
4396 params.ap_isolate = -1;
4397 params.ht_opmode = -1;
4398 params.p2p_ctwindow = -1;
4399 params.p2p_opp_ps = -1;
4400
4401 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4402 params.use_cts_prot =
4403 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4404 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4405 params.use_short_preamble =
4406 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4407 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4408 params.use_short_slot_time =
4409 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4410 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4411 params.basic_rates =
4412 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4413 params.basic_rates_len =
4414 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4415 }
4416 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4417 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4418 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4419 params.ht_opmode =
4420 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4421
4422 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4423 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4424 return -EINVAL;
4425 params.p2p_ctwindow =
4426 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4427 if (params.p2p_ctwindow < 0)
4428 return -EINVAL;
4429 if (params.p2p_ctwindow != 0 &&
4430 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4431 return -EINVAL;
4432 }
4433
4434 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4435 u8 tmp;
4436
4437 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4438 return -EINVAL;
4439 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4440 if (tmp > 1)
4441 return -EINVAL;
4442 params.p2p_opp_ps = tmp;
4443 if (params.p2p_opp_ps &&
4444 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4445 return -EINVAL;
4446 }
4447
4448 if (!rdev->ops->change_bss)
4449 return -EOPNOTSUPP;
4450
4451 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4452 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4453 return -EOPNOTSUPP;
4454
4455 return rdev_change_bss(rdev, dev, &params);
4456 }
4457
4458 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4459 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4460 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4461 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4462 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4463 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4464 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4465 };
4466
4467 static int parse_reg_rule(struct nlattr *tb[],
4468 struct ieee80211_reg_rule *reg_rule)
4469 {
4470 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4471 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4472
4473 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4474 return -EINVAL;
4475 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4476 return -EINVAL;
4477 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4478 return -EINVAL;
4479 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4480 return -EINVAL;
4481 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4482 return -EINVAL;
4483
4484 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4485
4486 freq_range->start_freq_khz =
4487 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4488 freq_range->end_freq_khz =
4489 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4490 freq_range->max_bandwidth_khz =
4491 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4492
4493 power_rule->max_eirp =
4494 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4495
4496 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4497 power_rule->max_antenna_gain =
4498 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4499
4500 return 0;
4501 }
4502
4503 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4504 {
4505 int r;
4506 char *data = NULL;
4507 enum nl80211_user_reg_hint_type user_reg_hint_type;
4508
4509 /*
4510 * You should only get this when cfg80211 hasn't yet initialized
4511 * completely when built-in to the kernel right between the time
4512 * window between nl80211_init() and regulatory_init(), if that is
4513 * even possible.
4514 */
4515 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4516 return -EINPROGRESS;
4517
4518 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4519 return -EINVAL;
4520
4521 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4522
4523 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4524 user_reg_hint_type =
4525 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4526 else
4527 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4528
4529 switch (user_reg_hint_type) {
4530 case NL80211_USER_REG_HINT_USER:
4531 case NL80211_USER_REG_HINT_CELL_BASE:
4532 break;
4533 default:
4534 return -EINVAL;
4535 }
4536
4537 r = regulatory_hint_user(data, user_reg_hint_type);
4538
4539 return r;
4540 }
4541
4542 static int nl80211_get_mesh_config(struct sk_buff *skb,
4543 struct genl_info *info)
4544 {
4545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4546 struct net_device *dev = info->user_ptr[1];
4547 struct wireless_dev *wdev = dev->ieee80211_ptr;
4548 struct mesh_config cur_params;
4549 int err = 0;
4550 void *hdr;
4551 struct nlattr *pinfoattr;
4552 struct sk_buff *msg;
4553
4554 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4555 return -EOPNOTSUPP;
4556
4557 if (!rdev->ops->get_mesh_config)
4558 return -EOPNOTSUPP;
4559
4560 wdev_lock(wdev);
4561 /* If not connected, get default parameters */
4562 if (!wdev->mesh_id_len)
4563 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4564 else
4565 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4566 wdev_unlock(wdev);
4567
4568 if (err)
4569 return err;
4570
4571 /* Draw up a netlink message to send back */
4572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4573 if (!msg)
4574 return -ENOMEM;
4575 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4576 NL80211_CMD_GET_MESH_CONFIG);
4577 if (!hdr)
4578 goto out;
4579 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4580 if (!pinfoattr)
4581 goto nla_put_failure;
4582 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4583 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4584 cur_params.dot11MeshRetryTimeout) ||
4585 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4586 cur_params.dot11MeshConfirmTimeout) ||
4587 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4588 cur_params.dot11MeshHoldingTimeout) ||
4589 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4590 cur_params.dot11MeshMaxPeerLinks) ||
4591 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4592 cur_params.dot11MeshMaxRetries) ||
4593 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4594 cur_params.dot11MeshTTL) ||
4595 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4596 cur_params.element_ttl) ||
4597 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4598 cur_params.auto_open_plinks) ||
4599 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4600 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4601 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4602 cur_params.dot11MeshHWMPmaxPREQretries) ||
4603 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4604 cur_params.path_refresh_time) ||
4605 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4606 cur_params.min_discovery_timeout) ||
4607 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4608 cur_params.dot11MeshHWMPactivePathTimeout) ||
4609 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4610 cur_params.dot11MeshHWMPpreqMinInterval) ||
4611 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4612 cur_params.dot11MeshHWMPperrMinInterval) ||
4613 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4614 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4615 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4616 cur_params.dot11MeshHWMPRootMode) ||
4617 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4618 cur_params.dot11MeshHWMPRannInterval) ||
4619 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4620 cur_params.dot11MeshGateAnnouncementProtocol) ||
4621 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4622 cur_params.dot11MeshForwarding) ||
4623 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4624 cur_params.rssi_threshold) ||
4625 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4626 cur_params.ht_opmode) ||
4627 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4628 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4629 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4630 cur_params.dot11MeshHWMProotInterval) ||
4631 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4632 cur_params.dot11MeshHWMPconfirmationInterval) ||
4633 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4634 cur_params.power_mode) ||
4635 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4636 cur_params.dot11MeshAwakeWindowDuration))
4637 goto nla_put_failure;
4638 nla_nest_end(msg, pinfoattr);
4639 genlmsg_end(msg, hdr);
4640 return genlmsg_reply(msg, info);
4641
4642 nla_put_failure:
4643 genlmsg_cancel(msg, hdr);
4644 out:
4645 nlmsg_free(msg);
4646 return -ENOBUFS;
4647 }
4648
4649 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4650 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4651 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4652 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4653 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4654 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4655 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4656 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4657 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4658 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4659 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4660 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4661 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4662 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4663 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4664 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4665 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4666 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4667 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4668 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4669 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4670 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4671 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4672 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4673 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4674 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4675 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4676 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4677 };
4678
4679 static const struct nla_policy
4680 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4681 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4682 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4683 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4684 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4685 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4686 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4687 .len = IEEE80211_MAX_DATA_LEN },
4688 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4689 };
4690
4691 static int nl80211_parse_mesh_config(struct genl_info *info,
4692 struct mesh_config *cfg,
4693 u32 *mask_out)
4694 {
4695 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4696 u32 mask = 0;
4697
4698 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4699 do { \
4700 if (tb[attr]) { \
4701 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4702 return -EINVAL; \
4703 cfg->param = fn(tb[attr]); \
4704 mask |= (1 << (attr - 1)); \
4705 } \
4706 } while (0)
4707
4708
4709 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4710 return -EINVAL;
4711 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4712 info->attrs[NL80211_ATTR_MESH_CONFIG],
4713 nl80211_meshconf_params_policy))
4714 return -EINVAL;
4715
4716 /* This makes sure that there aren't more than 32 mesh config
4717 * parameters (otherwise our bitfield scheme would not work.) */
4718 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4719
4720 /* Fill in the params struct */
4721 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4722 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4723 nla_get_u16);
4724 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4725 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4726 nla_get_u16);
4727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4728 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4729 nla_get_u16);
4730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4731 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4732 nla_get_u16);
4733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4734 mask, NL80211_MESHCONF_MAX_RETRIES,
4735 nla_get_u8);
4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4737 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4738 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4739 mask, NL80211_MESHCONF_ELEMENT_TTL,
4740 nla_get_u8);
4741 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4742 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4743 nla_get_u8);
4744 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4745 1, 255, mask,
4746 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4747 nla_get_u32);
4748 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4749 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4750 nla_get_u8);
4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4752 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4753 nla_get_u32);
4754 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4755 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4756 nla_get_u16);
4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4758 1, 65535, mask,
4759 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4760 nla_get_u32);
4761 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4762 1, 65535, mask,
4763 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4764 nla_get_u16);
4765 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4766 1, 65535, mask,
4767 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4768 nla_get_u16);
4769 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4770 dot11MeshHWMPnetDiameterTraversalTime,
4771 1, 65535, mask,
4772 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4773 nla_get_u16);
4774 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4775 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4776 nla_get_u8);
4777 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4778 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4779 nla_get_u16);
4780 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4781 dot11MeshGateAnnouncementProtocol, 0, 1,
4782 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4783 nla_get_u8);
4784 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4785 mask, NL80211_MESHCONF_FORWARDING,
4786 nla_get_u8);
4787 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4788 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4789 nla_get_u32);
4790 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4791 mask, NL80211_MESHCONF_HT_OPMODE,
4792 nla_get_u16);
4793 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4794 1, 65535, mask,
4795 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4796 nla_get_u32);
4797 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4798 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4799 nla_get_u16);
4800 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4801 dot11MeshHWMPconfirmationInterval,
4802 1, 65535, mask,
4803 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4804 nla_get_u16);
4805 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4806 NL80211_MESH_POWER_ACTIVE,
4807 NL80211_MESH_POWER_MAX,
4808 mask, NL80211_MESHCONF_POWER_MODE,
4809 nla_get_u32);
4810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4811 0, 65535, mask,
4812 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4813 if (mask_out)
4814 *mask_out = mask;
4815
4816 return 0;
4817
4818 #undef FILL_IN_MESH_PARAM_IF_SET
4819 }
4820
4821 static int nl80211_parse_mesh_setup(struct genl_info *info,
4822 struct mesh_setup *setup)
4823 {
4824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4825 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4826
4827 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4828 return -EINVAL;
4829 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4830 info->attrs[NL80211_ATTR_MESH_SETUP],
4831 nl80211_mesh_setup_params_policy))
4832 return -EINVAL;
4833
4834 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4835 setup->sync_method =
4836 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4837 IEEE80211_SYNC_METHOD_VENDOR :
4838 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4839
4840 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4841 setup->path_sel_proto =
4842 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4843 IEEE80211_PATH_PROTOCOL_VENDOR :
4844 IEEE80211_PATH_PROTOCOL_HWMP;
4845
4846 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4847 setup->path_metric =
4848 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4849 IEEE80211_PATH_METRIC_VENDOR :
4850 IEEE80211_PATH_METRIC_AIRTIME;
4851
4852
4853 if (tb[NL80211_MESH_SETUP_IE]) {
4854 struct nlattr *ieattr =
4855 tb[NL80211_MESH_SETUP_IE];
4856 if (!is_valid_ie_attr(ieattr))
4857 return -EINVAL;
4858 setup->ie = nla_data(ieattr);
4859 setup->ie_len = nla_len(ieattr);
4860 }
4861 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4862 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4863 return -EINVAL;
4864 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4865 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4866 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4867 if (setup->is_secure)
4868 setup->user_mpm = true;
4869
4870 return 0;
4871 }
4872
4873 static int nl80211_update_mesh_config(struct sk_buff *skb,
4874 struct genl_info *info)
4875 {
4876 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4877 struct net_device *dev = info->user_ptr[1];
4878 struct wireless_dev *wdev = dev->ieee80211_ptr;
4879 struct mesh_config cfg;
4880 u32 mask;
4881 int err;
4882
4883 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4884 return -EOPNOTSUPP;
4885
4886 if (!rdev->ops->update_mesh_config)
4887 return -EOPNOTSUPP;
4888
4889 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4890 if (err)
4891 return err;
4892
4893 wdev_lock(wdev);
4894 if (!wdev->mesh_id_len)
4895 err = -ENOLINK;
4896
4897 if (!err)
4898 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4899
4900 wdev_unlock(wdev);
4901
4902 return err;
4903 }
4904
4905 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4906 {
4907 const struct ieee80211_regdomain *regdom;
4908 struct sk_buff *msg;
4909 void *hdr = NULL;
4910 struct nlattr *nl_reg_rules;
4911 unsigned int i;
4912 int err = -EINVAL;
4913
4914 mutex_lock(&cfg80211_mutex);
4915
4916 if (!cfg80211_regdomain)
4917 goto out;
4918
4919 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4920 if (!msg) {
4921 err = -ENOBUFS;
4922 goto out;
4923 }
4924
4925 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4926 NL80211_CMD_GET_REG);
4927 if (!hdr)
4928 goto put_failure;
4929
4930 if (reg_last_request_cell_base() &&
4931 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4932 NL80211_USER_REG_HINT_CELL_BASE))
4933 goto nla_put_failure;
4934
4935 rcu_read_lock();
4936 regdom = rcu_dereference(cfg80211_regdomain);
4937
4938 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4939 (regdom->dfs_region &&
4940 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4941 goto nla_put_failure_rcu;
4942
4943 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4944 if (!nl_reg_rules)
4945 goto nla_put_failure_rcu;
4946
4947 for (i = 0; i < regdom->n_reg_rules; i++) {
4948 struct nlattr *nl_reg_rule;
4949 const struct ieee80211_reg_rule *reg_rule;
4950 const struct ieee80211_freq_range *freq_range;
4951 const struct ieee80211_power_rule *power_rule;
4952
4953 reg_rule = &regdom->reg_rules[i];
4954 freq_range = &reg_rule->freq_range;
4955 power_rule = &reg_rule->power_rule;
4956
4957 nl_reg_rule = nla_nest_start(msg, i);
4958 if (!nl_reg_rule)
4959 goto nla_put_failure_rcu;
4960
4961 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4962 reg_rule->flags) ||
4963 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4964 freq_range->start_freq_khz) ||
4965 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4966 freq_range->end_freq_khz) ||
4967 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4968 freq_range->max_bandwidth_khz) ||
4969 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4970 power_rule->max_antenna_gain) ||
4971 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4972 power_rule->max_eirp))
4973 goto nla_put_failure_rcu;
4974
4975 nla_nest_end(msg, nl_reg_rule);
4976 }
4977 rcu_read_unlock();
4978
4979 nla_nest_end(msg, nl_reg_rules);
4980
4981 genlmsg_end(msg, hdr);
4982 err = genlmsg_reply(msg, info);
4983 goto out;
4984
4985 nla_put_failure_rcu:
4986 rcu_read_unlock();
4987 nla_put_failure:
4988 genlmsg_cancel(msg, hdr);
4989 put_failure:
4990 nlmsg_free(msg);
4991 err = -EMSGSIZE;
4992 out:
4993 mutex_unlock(&cfg80211_mutex);
4994 return err;
4995 }
4996
4997 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4998 {
4999 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5000 struct nlattr *nl_reg_rule;
5001 char *alpha2 = NULL;
5002 int rem_reg_rules = 0, r = 0;
5003 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5004 u8 dfs_region = 0;
5005 struct ieee80211_regdomain *rd = NULL;
5006
5007 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5008 return -EINVAL;
5009
5010 if (!info->attrs[NL80211_ATTR_REG_RULES])
5011 return -EINVAL;
5012
5013 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5014
5015 if (info->attrs[NL80211_ATTR_DFS_REGION])
5016 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5017
5018 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5019 rem_reg_rules) {
5020 num_rules++;
5021 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5022 return -EINVAL;
5023 }
5024
5025 size_of_regd = sizeof(struct ieee80211_regdomain) +
5026 num_rules * sizeof(struct ieee80211_reg_rule);
5027
5028 rd = kzalloc(size_of_regd, GFP_KERNEL);
5029 if (!rd)
5030 return -ENOMEM;
5031
5032 rd->n_reg_rules = num_rules;
5033 rd->alpha2[0] = alpha2[0];
5034 rd->alpha2[1] = alpha2[1];
5035
5036 /*
5037 * Disable DFS master mode if the DFS region was
5038 * not supported or known on this kernel.
5039 */
5040 if (reg_supported_dfs_region(dfs_region))
5041 rd->dfs_region = dfs_region;
5042
5043 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5044 rem_reg_rules) {
5045 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5046 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5047 reg_rule_policy);
5048 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5049 if (r)
5050 goto bad_reg;
5051
5052 rule_idx++;
5053
5054 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5055 r = -EINVAL;
5056 goto bad_reg;
5057 }
5058 }
5059
5060 mutex_lock(&cfg80211_mutex);
5061
5062 r = set_regdom(rd);
5063 /* set_regdom took ownership */
5064 rd = NULL;
5065 mutex_unlock(&cfg80211_mutex);
5066
5067 bad_reg:
5068 kfree(rd);
5069 return r;
5070 }
5071
5072 static int validate_scan_freqs(struct nlattr *freqs)
5073 {
5074 struct nlattr *attr1, *attr2;
5075 int n_channels = 0, tmp1, tmp2;
5076
5077 nla_for_each_nested(attr1, freqs, tmp1) {
5078 n_channels++;
5079 /*
5080 * Some hardware has a limited channel list for
5081 * scanning, and it is pretty much nonsensical
5082 * to scan for a channel twice, so disallow that
5083 * and don't require drivers to check that the
5084 * channel list they get isn't longer than what
5085 * they can scan, as long as they can scan all
5086 * the channels they registered at once.
5087 */
5088 nla_for_each_nested(attr2, freqs, tmp2)
5089 if (attr1 != attr2 &&
5090 nla_get_u32(attr1) == nla_get_u32(attr2))
5091 return 0;
5092 }
5093
5094 return n_channels;
5095 }
5096
5097 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5098 {
5099 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5100 struct wireless_dev *wdev = info->user_ptr[1];
5101 struct cfg80211_scan_request *request;
5102 struct nlattr *attr;
5103 struct wiphy *wiphy;
5104 int err, tmp, n_ssids = 0, n_channels, i;
5105 size_t ie_len;
5106
5107 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5108 return -EINVAL;
5109
5110 wiphy = &rdev->wiphy;
5111
5112 if (!rdev->ops->scan)
5113 return -EOPNOTSUPP;
5114
5115 mutex_lock(&rdev->sched_scan_mtx);
5116 if (rdev->scan_req) {
5117 err = -EBUSY;
5118 goto unlock;
5119 }
5120
5121 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5122 n_channels = validate_scan_freqs(
5123 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5124 if (!n_channels) {
5125 err = -EINVAL;
5126 goto unlock;
5127 }
5128 } else {
5129 enum ieee80211_band band;
5130 n_channels = 0;
5131
5132 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5133 if (wiphy->bands[band])
5134 n_channels += wiphy->bands[band]->n_channels;
5135 }
5136
5137 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5138 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5139 n_ssids++;
5140
5141 if (n_ssids > wiphy->max_scan_ssids) {
5142 err = -EINVAL;
5143 goto unlock;
5144 }
5145
5146 if (info->attrs[NL80211_ATTR_IE])
5147 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5148 else
5149 ie_len = 0;
5150
5151 if (ie_len > wiphy->max_scan_ie_len) {
5152 err = -EINVAL;
5153 goto unlock;
5154 }
5155
5156 request = kzalloc(sizeof(*request)
5157 + sizeof(*request->ssids) * n_ssids
5158 + sizeof(*request->channels) * n_channels
5159 + ie_len, GFP_KERNEL);
5160 if (!request) {
5161 err = -ENOMEM;
5162 goto unlock;
5163 }
5164
5165 if (n_ssids)
5166 request->ssids = (void *)&request->channels[n_channels];
5167 request->n_ssids = n_ssids;
5168 if (ie_len) {
5169 if (request->ssids)
5170 request->ie = (void *)(request->ssids + n_ssids);
5171 else
5172 request->ie = (void *)(request->channels + n_channels);
5173 }
5174
5175 i = 0;
5176 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5177 /* user specified, bail out if channel not found */
5178 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5179 struct ieee80211_channel *chan;
5180
5181 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5182
5183 if (!chan) {
5184 err = -EINVAL;
5185 goto out_free;
5186 }
5187
5188 /* ignore disabled channels */
5189 if (chan->flags & IEEE80211_CHAN_DISABLED)
5190 continue;
5191
5192 request->channels[i] = chan;
5193 i++;
5194 }
5195 } else {
5196 enum ieee80211_band band;
5197
5198 /* all channels */
5199 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5200 int j;
5201 if (!wiphy->bands[band])
5202 continue;
5203 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5204 struct ieee80211_channel *chan;
5205
5206 chan = &wiphy->bands[band]->channels[j];
5207
5208 if (chan->flags & IEEE80211_CHAN_DISABLED)
5209 continue;
5210
5211 request->channels[i] = chan;
5212 i++;
5213 }
5214 }
5215 }
5216
5217 if (!i) {
5218 err = -EINVAL;
5219 goto out_free;
5220 }
5221
5222 request->n_channels = i;
5223
5224 i = 0;
5225 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5226 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5227 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5228 err = -EINVAL;
5229 goto out_free;
5230 }
5231 request->ssids[i].ssid_len = nla_len(attr);
5232 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5233 i++;
5234 }
5235 }
5236
5237 if (info->attrs[NL80211_ATTR_IE]) {
5238 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5239 memcpy((void *)request->ie,
5240 nla_data(info->attrs[NL80211_ATTR_IE]),
5241 request->ie_len);
5242 }
5243
5244 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5245 if (wiphy->bands[i])
5246 request->rates[i] =
5247 (1 << wiphy->bands[i]->n_bitrates) - 1;
5248
5249 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5250 nla_for_each_nested(attr,
5251 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5252 tmp) {
5253 enum ieee80211_band band = nla_type(attr);
5254
5255 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5256 err = -EINVAL;
5257 goto out_free;
5258 }
5259 err = ieee80211_get_ratemask(wiphy->bands[band],
5260 nla_data(attr),
5261 nla_len(attr),
5262 &request->rates[band]);
5263 if (err)
5264 goto out_free;
5265 }
5266 }
5267
5268 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5269 request->flags = nla_get_u32(
5270 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5271 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5272 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5273 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5274 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5275 err = -EOPNOTSUPP;
5276 goto out_free;
5277 }
5278 }
5279
5280 request->no_cck =
5281 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5282
5283 request->wdev = wdev;
5284 request->wiphy = &rdev->wiphy;
5285 request->scan_start = jiffies;
5286
5287 rdev->scan_req = request;
5288 err = rdev_scan(rdev, request);
5289
5290 if (!err) {
5291 nl80211_send_scan_start(rdev, wdev);
5292 if (wdev->netdev)
5293 dev_hold(wdev->netdev);
5294 } else {
5295 out_free:
5296 rdev->scan_req = NULL;
5297 kfree(request);
5298 }
5299
5300 unlock:
5301 mutex_unlock(&rdev->sched_scan_mtx);
5302 return err;
5303 }
5304
5305 static int nl80211_start_sched_scan(struct sk_buff *skb,
5306 struct genl_info *info)
5307 {
5308 struct cfg80211_sched_scan_request *request;
5309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5310 struct net_device *dev = info->user_ptr[1];
5311 struct nlattr *attr;
5312 struct wiphy *wiphy;
5313 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5314 u32 interval;
5315 enum ieee80211_band band;
5316 size_t ie_len;
5317 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5318
5319 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5320 !rdev->ops->sched_scan_start)
5321 return -EOPNOTSUPP;
5322
5323 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5324 return -EINVAL;
5325
5326 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5327 return -EINVAL;
5328
5329 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5330 if (interval == 0)
5331 return -EINVAL;
5332
5333 wiphy = &rdev->wiphy;
5334
5335 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5336 n_channels = validate_scan_freqs(
5337 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5338 if (!n_channels)
5339 return -EINVAL;
5340 } else {
5341 n_channels = 0;
5342
5343 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5344 if (wiphy->bands[band])
5345 n_channels += wiphy->bands[band]->n_channels;
5346 }
5347
5348 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5349 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5350 tmp)
5351 n_ssids++;
5352
5353 if (n_ssids > wiphy->max_sched_scan_ssids)
5354 return -EINVAL;
5355
5356 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5357 nla_for_each_nested(attr,
5358 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5359 tmp)
5360 n_match_sets++;
5361
5362 if (n_match_sets > wiphy->max_match_sets)
5363 return -EINVAL;
5364
5365 if (info->attrs[NL80211_ATTR_IE])
5366 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5367 else
5368 ie_len = 0;
5369
5370 if (ie_len > wiphy->max_sched_scan_ie_len)
5371 return -EINVAL;
5372
5373 mutex_lock(&rdev->sched_scan_mtx);
5374
5375 if (rdev->sched_scan_req) {
5376 err = -EINPROGRESS;
5377 goto out;
5378 }
5379
5380 request = kzalloc(sizeof(*request)
5381 + sizeof(*request->ssids) * n_ssids
5382 + sizeof(*request->match_sets) * n_match_sets
5383 + sizeof(*request->channels) * n_channels
5384 + ie_len, GFP_KERNEL);
5385 if (!request) {
5386 err = -ENOMEM;
5387 goto out;
5388 }
5389
5390 if (n_ssids)
5391 request->ssids = (void *)&request->channels[n_channels];
5392 request->n_ssids = n_ssids;
5393 if (ie_len) {
5394 if (request->ssids)
5395 request->ie = (void *)(request->ssids + n_ssids);
5396 else
5397 request->ie = (void *)(request->channels + n_channels);
5398 }
5399
5400 if (n_match_sets) {
5401 if (request->ie)
5402 request->match_sets = (void *)(request->ie + ie_len);
5403 else if (request->ssids)
5404 request->match_sets =
5405 (void *)(request->ssids + n_ssids);
5406 else
5407 request->match_sets =
5408 (void *)(request->channels + n_channels);
5409 }
5410 request->n_match_sets = n_match_sets;
5411
5412 i = 0;
5413 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5414 /* user specified, bail out if channel not found */
5415 nla_for_each_nested(attr,
5416 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5417 tmp) {
5418 struct ieee80211_channel *chan;
5419
5420 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5421
5422 if (!chan) {
5423 err = -EINVAL;
5424 goto out_free;
5425 }
5426
5427 /* ignore disabled channels */
5428 if (chan->flags & IEEE80211_CHAN_DISABLED)
5429 continue;
5430
5431 request->channels[i] = chan;
5432 i++;
5433 }
5434 } else {
5435 /* all channels */
5436 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5437 int j;
5438 if (!wiphy->bands[band])
5439 continue;
5440 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5441 struct ieee80211_channel *chan;
5442
5443 chan = &wiphy->bands[band]->channels[j];
5444
5445 if (chan->flags & IEEE80211_CHAN_DISABLED)
5446 continue;
5447
5448 request->channels[i] = chan;
5449 i++;
5450 }
5451 }
5452 }
5453
5454 if (!i) {
5455 err = -EINVAL;
5456 goto out_free;
5457 }
5458
5459 request->n_channels = i;
5460
5461 i = 0;
5462 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5463 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5464 tmp) {
5465 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5466 err = -EINVAL;
5467 goto out_free;
5468 }
5469 request->ssids[i].ssid_len = nla_len(attr);
5470 memcpy(request->ssids[i].ssid, nla_data(attr),
5471 nla_len(attr));
5472 i++;
5473 }
5474 }
5475
5476 i = 0;
5477 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5478 nla_for_each_nested(attr,
5479 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5480 tmp) {
5481 struct nlattr *ssid, *rssi;
5482
5483 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5484 nla_data(attr), nla_len(attr),
5485 nl80211_match_policy);
5486 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5487 if (ssid) {
5488 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5489 err = -EINVAL;
5490 goto out_free;
5491 }
5492 memcpy(request->match_sets[i].ssid.ssid,
5493 nla_data(ssid), nla_len(ssid));
5494 request->match_sets[i].ssid.ssid_len =
5495 nla_len(ssid);
5496 }
5497 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5498 if (rssi)
5499 request->rssi_thold = nla_get_u32(rssi);
5500 else
5501 request->rssi_thold =
5502 NL80211_SCAN_RSSI_THOLD_OFF;
5503 i++;
5504 }
5505 }
5506
5507 if (info->attrs[NL80211_ATTR_IE]) {
5508 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5509 memcpy((void *)request->ie,
5510 nla_data(info->attrs[NL80211_ATTR_IE]),
5511 request->ie_len);
5512 }
5513
5514 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5515 request->flags = nla_get_u32(
5516 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5517 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5518 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5519 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5520 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5521 err = -EOPNOTSUPP;
5522 goto out_free;
5523 }
5524 }
5525
5526 request->dev = dev;
5527 request->wiphy = &rdev->wiphy;
5528 request->interval = interval;
5529 request->scan_start = jiffies;
5530
5531 err = rdev_sched_scan_start(rdev, dev, request);
5532 if (!err) {
5533 rdev->sched_scan_req = request;
5534 nl80211_send_sched_scan(rdev, dev,
5535 NL80211_CMD_START_SCHED_SCAN);
5536 goto out;
5537 }
5538
5539 out_free:
5540 kfree(request);
5541 out:
5542 mutex_unlock(&rdev->sched_scan_mtx);
5543 return err;
5544 }
5545
5546 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5547 struct genl_info *info)
5548 {
5549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5550 int err;
5551
5552 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5553 !rdev->ops->sched_scan_stop)
5554 return -EOPNOTSUPP;
5555
5556 mutex_lock(&rdev->sched_scan_mtx);
5557 err = __cfg80211_stop_sched_scan(rdev, false);
5558 mutex_unlock(&rdev->sched_scan_mtx);
5559
5560 return err;
5561 }
5562
5563 static int nl80211_start_radar_detection(struct sk_buff *skb,
5564 struct genl_info *info)
5565 {
5566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5567 struct net_device *dev = info->user_ptr[1];
5568 struct wireless_dev *wdev = dev->ieee80211_ptr;
5569 struct cfg80211_chan_def chandef;
5570 int err;
5571
5572 err = nl80211_parse_chandef(rdev, info, &chandef);
5573 if (err)
5574 return err;
5575
5576 if (wdev->cac_started)
5577 return -EBUSY;
5578
5579 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5580 if (err < 0)
5581 return err;
5582
5583 if (err == 0)
5584 return -EINVAL;
5585
5586 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5587 return -EINVAL;
5588
5589 if (!rdev->ops->start_radar_detection)
5590 return -EOPNOTSUPP;
5591
5592 mutex_lock(&rdev->devlist_mtx);
5593 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5594 chandef.chan, CHAN_MODE_SHARED,
5595 BIT(chandef.width));
5596 if (err)
5597 goto err_locked;
5598
5599 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5600 if (!err) {
5601 wdev->channel = chandef.chan;
5602 wdev->cac_started = true;
5603 wdev->cac_start_time = jiffies;
5604 }
5605 err_locked:
5606 mutex_unlock(&rdev->devlist_mtx);
5607
5608 return err;
5609 }
5610
5611 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5612 u32 seq, int flags,
5613 struct cfg80211_registered_device *rdev,
5614 struct wireless_dev *wdev,
5615 struct cfg80211_internal_bss *intbss)
5616 {
5617 struct cfg80211_bss *res = &intbss->pub;
5618 const struct cfg80211_bss_ies *ies;
5619 void *hdr;
5620 struct nlattr *bss;
5621 bool tsf = false;
5622
5623 ASSERT_WDEV_LOCK(wdev);
5624
5625 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5626 NL80211_CMD_NEW_SCAN_RESULTS);
5627 if (!hdr)
5628 return -1;
5629
5630 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5631
5632 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5633 goto nla_put_failure;
5634 if (wdev->netdev &&
5635 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5636 goto nla_put_failure;
5637 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5638 goto nla_put_failure;
5639
5640 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5641 if (!bss)
5642 goto nla_put_failure;
5643 if ((!is_zero_ether_addr(res->bssid) &&
5644 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5645 goto nla_put_failure;
5646
5647 rcu_read_lock();
5648 ies = rcu_dereference(res->ies);
5649 if (ies) {
5650 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5651 goto fail_unlock_rcu;
5652 tsf = true;
5653 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5654 ies->len, ies->data))
5655 goto fail_unlock_rcu;
5656 }
5657 ies = rcu_dereference(res->beacon_ies);
5658 if (ies) {
5659 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5660 goto fail_unlock_rcu;
5661 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5662 ies->len, ies->data))
5663 goto fail_unlock_rcu;
5664 }
5665 rcu_read_unlock();
5666
5667 if (res->beacon_interval &&
5668 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5669 goto nla_put_failure;
5670 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5671 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5672 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5673 jiffies_to_msecs(jiffies - intbss->ts)))
5674 goto nla_put_failure;
5675
5676 switch (rdev->wiphy.signal_type) {
5677 case CFG80211_SIGNAL_TYPE_MBM:
5678 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5679 goto nla_put_failure;
5680 break;
5681 case CFG80211_SIGNAL_TYPE_UNSPEC:
5682 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5683 goto nla_put_failure;
5684 break;
5685 default:
5686 break;
5687 }
5688
5689 switch (wdev->iftype) {
5690 case NL80211_IFTYPE_P2P_CLIENT:
5691 case NL80211_IFTYPE_STATION:
5692 if (intbss == wdev->current_bss &&
5693 nla_put_u32(msg, NL80211_BSS_STATUS,
5694 NL80211_BSS_STATUS_ASSOCIATED))
5695 goto nla_put_failure;
5696 break;
5697 case NL80211_IFTYPE_ADHOC:
5698 if (intbss == wdev->current_bss &&
5699 nla_put_u32(msg, NL80211_BSS_STATUS,
5700 NL80211_BSS_STATUS_IBSS_JOINED))
5701 goto nla_put_failure;
5702 break;
5703 default:
5704 break;
5705 }
5706
5707 nla_nest_end(msg, bss);
5708
5709 return genlmsg_end(msg, hdr);
5710
5711 fail_unlock_rcu:
5712 rcu_read_unlock();
5713 nla_put_failure:
5714 genlmsg_cancel(msg, hdr);
5715 return -EMSGSIZE;
5716 }
5717
5718 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5719 {
5720 struct cfg80211_registered_device *rdev;
5721 struct cfg80211_internal_bss *scan;
5722 struct wireless_dev *wdev;
5723 int start = cb->args[2], idx = 0;
5724 int err;
5725
5726 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5727 if (err)
5728 return err;
5729
5730 wdev_lock(wdev);
5731 spin_lock_bh(&rdev->bss_lock);
5732 cfg80211_bss_expire(rdev);
5733
5734 cb->seq = rdev->bss_generation;
5735
5736 list_for_each_entry(scan, &rdev->bss_list, list) {
5737 if (++idx <= start)
5738 continue;
5739 if (nl80211_send_bss(skb, cb,
5740 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5741 rdev, wdev, scan) < 0) {
5742 idx--;
5743 break;
5744 }
5745 }
5746
5747 spin_unlock_bh(&rdev->bss_lock);
5748 wdev_unlock(wdev);
5749
5750 cb->args[2] = idx;
5751 nl80211_finish_wdev_dump(rdev);
5752
5753 return skb->len;
5754 }
5755
5756 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5757 int flags, struct net_device *dev,
5758 struct survey_info *survey)
5759 {
5760 void *hdr;
5761 struct nlattr *infoattr;
5762
5763 hdr = nl80211hdr_put(msg, portid, seq, flags,
5764 NL80211_CMD_NEW_SURVEY_RESULTS);
5765 if (!hdr)
5766 return -ENOMEM;
5767
5768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5769 goto nla_put_failure;
5770
5771 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5772 if (!infoattr)
5773 goto nla_put_failure;
5774
5775 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5776 survey->channel->center_freq))
5777 goto nla_put_failure;
5778
5779 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5780 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5781 goto nla_put_failure;
5782 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5783 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5784 goto nla_put_failure;
5785 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5786 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5787 survey->channel_time))
5788 goto nla_put_failure;
5789 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5790 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5791 survey->channel_time_busy))
5792 goto nla_put_failure;
5793 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5794 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5795 survey->channel_time_ext_busy))
5796 goto nla_put_failure;
5797 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5798 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5799 survey->channel_time_rx))
5800 goto nla_put_failure;
5801 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5802 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5803 survey->channel_time_tx))
5804 goto nla_put_failure;
5805
5806 nla_nest_end(msg, infoattr);
5807
5808 return genlmsg_end(msg, hdr);
5809
5810 nla_put_failure:
5811 genlmsg_cancel(msg, hdr);
5812 return -EMSGSIZE;
5813 }
5814
5815 static int nl80211_dump_survey(struct sk_buff *skb,
5816 struct netlink_callback *cb)
5817 {
5818 struct survey_info survey;
5819 struct cfg80211_registered_device *dev;
5820 struct wireless_dev *wdev;
5821 int survey_idx = cb->args[2];
5822 int res;
5823
5824 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5825 if (res)
5826 return res;
5827
5828 if (!wdev->netdev) {
5829 res = -EINVAL;
5830 goto out_err;
5831 }
5832
5833 if (!dev->ops->dump_survey) {
5834 res = -EOPNOTSUPP;
5835 goto out_err;
5836 }
5837
5838 while (1) {
5839 struct ieee80211_channel *chan;
5840
5841 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5842 if (res == -ENOENT)
5843 break;
5844 if (res)
5845 goto out_err;
5846
5847 /* Survey without a channel doesn't make sense */
5848 if (!survey.channel) {
5849 res = -EINVAL;
5850 goto out;
5851 }
5852
5853 chan = ieee80211_get_channel(&dev->wiphy,
5854 survey.channel->center_freq);
5855 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5856 survey_idx++;
5857 continue;
5858 }
5859
5860 if (nl80211_send_survey(skb,
5861 NETLINK_CB(cb->skb).portid,
5862 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5863 wdev->netdev, &survey) < 0)
5864 goto out;
5865 survey_idx++;
5866 }
5867
5868 out:
5869 cb->args[2] = survey_idx;
5870 res = skb->len;
5871 out_err:
5872 nl80211_finish_wdev_dump(dev);
5873 return res;
5874 }
5875
5876 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5877 {
5878 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5879 NL80211_WPA_VERSION_2));
5880 }
5881
5882 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5883 {
5884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5885 struct net_device *dev = info->user_ptr[1];
5886 struct ieee80211_channel *chan;
5887 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5888 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5889 enum nl80211_auth_type auth_type;
5890 struct key_parse key;
5891 bool local_state_change;
5892
5893 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5894 return -EINVAL;
5895
5896 if (!info->attrs[NL80211_ATTR_MAC])
5897 return -EINVAL;
5898
5899 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5900 return -EINVAL;
5901
5902 if (!info->attrs[NL80211_ATTR_SSID])
5903 return -EINVAL;
5904
5905 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5906 return -EINVAL;
5907
5908 err = nl80211_parse_key(info, &key);
5909 if (err)
5910 return err;
5911
5912 if (key.idx >= 0) {
5913 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5914 return -EINVAL;
5915 if (!key.p.key || !key.p.key_len)
5916 return -EINVAL;
5917 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5918 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5919 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5920 key.p.key_len != WLAN_KEY_LEN_WEP104))
5921 return -EINVAL;
5922 if (key.idx > 4)
5923 return -EINVAL;
5924 } else {
5925 key.p.key_len = 0;
5926 key.p.key = NULL;
5927 }
5928
5929 if (key.idx >= 0) {
5930 int i;
5931 bool ok = false;
5932 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5933 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5934 ok = true;
5935 break;
5936 }
5937 }
5938 if (!ok)
5939 return -EINVAL;
5940 }
5941
5942 if (!rdev->ops->auth)
5943 return -EOPNOTSUPP;
5944
5945 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5946 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5947 return -EOPNOTSUPP;
5948
5949 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5950 chan = ieee80211_get_channel(&rdev->wiphy,
5951 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5952 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5953 return -EINVAL;
5954
5955 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5956 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5957
5958 if (info->attrs[NL80211_ATTR_IE]) {
5959 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5960 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5961 }
5962
5963 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5964 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5965 return -EINVAL;
5966
5967 if (auth_type == NL80211_AUTHTYPE_SAE &&
5968 !info->attrs[NL80211_ATTR_SAE_DATA])
5969 return -EINVAL;
5970
5971 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5972 if (auth_type != NL80211_AUTHTYPE_SAE)
5973 return -EINVAL;
5974 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5975 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5976 /* need to include at least Auth Transaction and Status Code */
5977 if (sae_data_len < 4)
5978 return -EINVAL;
5979 }
5980
5981 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5982
5983 /*
5984 * Since we no longer track auth state, ignore
5985 * requests to only change local state.
5986 */
5987 if (local_state_change)
5988 return 0;
5989
5990 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5991 ssid, ssid_len, ie, ie_len,
5992 key.p.key, key.p.key_len, key.idx,
5993 sae_data, sae_data_len);
5994 }
5995
5996 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5997 struct genl_info *info,
5998 struct cfg80211_crypto_settings *settings,
5999 int cipher_limit)
6000 {
6001 memset(settings, 0, sizeof(*settings));
6002
6003 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6004
6005 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6006 u16 proto;
6007 proto = nla_get_u16(
6008 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6009 settings->control_port_ethertype = cpu_to_be16(proto);
6010 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6011 proto != ETH_P_PAE)
6012 return -EINVAL;
6013 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6014 settings->control_port_no_encrypt = true;
6015 } else
6016 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6017
6018 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6019 void *data;
6020 int len, i;
6021
6022 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6023 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6024 settings->n_ciphers_pairwise = len / sizeof(u32);
6025
6026 if (len % sizeof(u32))
6027 return -EINVAL;
6028
6029 if (settings->n_ciphers_pairwise > cipher_limit)
6030 return -EINVAL;
6031
6032 memcpy(settings->ciphers_pairwise, data, len);
6033
6034 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6035 if (!cfg80211_supported_cipher_suite(
6036 &rdev->wiphy,
6037 settings->ciphers_pairwise[i]))
6038 return -EINVAL;
6039 }
6040
6041 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6042 settings->cipher_group =
6043 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6044 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6045 settings->cipher_group))
6046 return -EINVAL;
6047 }
6048
6049 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6050 settings->wpa_versions =
6051 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6052 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6053 return -EINVAL;
6054 }
6055
6056 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6057 void *data;
6058 int len;
6059
6060 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6061 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6062 settings->n_akm_suites = len / sizeof(u32);
6063
6064 if (len % sizeof(u32))
6065 return -EINVAL;
6066
6067 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6068 return -EINVAL;
6069
6070 memcpy(settings->akm_suites, data, len);
6071 }
6072
6073 return 0;
6074 }
6075
6076 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6077 {
6078 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6079 struct net_device *dev = info->user_ptr[1];
6080 struct ieee80211_channel *chan;
6081 struct cfg80211_assoc_request req = {};
6082 const u8 *bssid, *ssid;
6083 int err, ssid_len = 0;
6084
6085 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6086 return -EINVAL;
6087
6088 if (!info->attrs[NL80211_ATTR_MAC] ||
6089 !info->attrs[NL80211_ATTR_SSID] ||
6090 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6091 return -EINVAL;
6092
6093 if (!rdev->ops->assoc)
6094 return -EOPNOTSUPP;
6095
6096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6098 return -EOPNOTSUPP;
6099
6100 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6101
6102 chan = ieee80211_get_channel(&rdev->wiphy,
6103 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6104 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6105 return -EINVAL;
6106
6107 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6108 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6109
6110 if (info->attrs[NL80211_ATTR_IE]) {
6111 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6112 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6113 }
6114
6115 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6116 enum nl80211_mfp mfp =
6117 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6118 if (mfp == NL80211_MFP_REQUIRED)
6119 req.use_mfp = true;
6120 else if (mfp != NL80211_MFP_NO)
6121 return -EINVAL;
6122 }
6123
6124 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6125 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6126
6127 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6128 req.flags |= ASSOC_REQ_DISABLE_HT;
6129
6130 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6131 memcpy(&req.ht_capa_mask,
6132 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6133 sizeof(req.ht_capa_mask));
6134
6135 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6136 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6137 return -EINVAL;
6138 memcpy(&req.ht_capa,
6139 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6140 sizeof(req.ht_capa));
6141 }
6142
6143 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6144 req.flags |= ASSOC_REQ_DISABLE_VHT;
6145
6146 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6147 memcpy(&req.vht_capa_mask,
6148 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6149 sizeof(req.vht_capa_mask));
6150
6151 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6152 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6153 return -EINVAL;
6154 memcpy(&req.vht_capa,
6155 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6156 sizeof(req.vht_capa));
6157 }
6158
6159 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6160 if (!err)
6161 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6162 ssid, ssid_len, &req);
6163
6164 return err;
6165 }
6166
6167 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6168 {
6169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6170 struct net_device *dev = info->user_ptr[1];
6171 const u8 *ie = NULL, *bssid;
6172 int ie_len = 0;
6173 u16 reason_code;
6174 bool local_state_change;
6175
6176 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6177 return -EINVAL;
6178
6179 if (!info->attrs[NL80211_ATTR_MAC])
6180 return -EINVAL;
6181
6182 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6183 return -EINVAL;
6184
6185 if (!rdev->ops->deauth)
6186 return -EOPNOTSUPP;
6187
6188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6190 return -EOPNOTSUPP;
6191
6192 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6193
6194 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6195 if (reason_code == 0) {
6196 /* Reason Code 0 is reserved */
6197 return -EINVAL;
6198 }
6199
6200 if (info->attrs[NL80211_ATTR_IE]) {
6201 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6202 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6203 }
6204
6205 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6206
6207 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6208 local_state_change);
6209 }
6210
6211 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6212 {
6213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6214 struct net_device *dev = info->user_ptr[1];
6215 const u8 *ie = NULL, *bssid;
6216 int ie_len = 0;
6217 u16 reason_code;
6218 bool local_state_change;
6219
6220 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6221 return -EINVAL;
6222
6223 if (!info->attrs[NL80211_ATTR_MAC])
6224 return -EINVAL;
6225
6226 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6227 return -EINVAL;
6228
6229 if (!rdev->ops->disassoc)
6230 return -EOPNOTSUPP;
6231
6232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6233 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6234 return -EOPNOTSUPP;
6235
6236 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6237
6238 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6239 if (reason_code == 0) {
6240 /* Reason Code 0 is reserved */
6241 return -EINVAL;
6242 }
6243
6244 if (info->attrs[NL80211_ATTR_IE]) {
6245 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6246 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6247 }
6248
6249 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6250
6251 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6252 local_state_change);
6253 }
6254
6255 static bool
6256 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6257 int mcast_rate[IEEE80211_NUM_BANDS],
6258 int rateval)
6259 {
6260 struct wiphy *wiphy = &rdev->wiphy;
6261 bool found = false;
6262 int band, i;
6263
6264 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6265 struct ieee80211_supported_band *sband;
6266
6267 sband = wiphy->bands[band];
6268 if (!sband)
6269 continue;
6270
6271 for (i = 0; i < sband->n_bitrates; i++) {
6272 if (sband->bitrates[i].bitrate == rateval) {
6273 mcast_rate[band] = i + 1;
6274 found = true;
6275 break;
6276 }
6277 }
6278 }
6279
6280 return found;
6281 }
6282
6283 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6284 {
6285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286 struct net_device *dev = info->user_ptr[1];
6287 struct cfg80211_ibss_params ibss;
6288 struct wiphy *wiphy;
6289 struct cfg80211_cached_keys *connkeys = NULL;
6290 int err;
6291
6292 memset(&ibss, 0, sizeof(ibss));
6293
6294 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6295 return -EINVAL;
6296
6297 if (!info->attrs[NL80211_ATTR_SSID] ||
6298 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6299 return -EINVAL;
6300
6301 ibss.beacon_interval = 100;
6302
6303 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6304 ibss.beacon_interval =
6305 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6306 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6307 return -EINVAL;
6308 }
6309
6310 if (!rdev->ops->join_ibss)
6311 return -EOPNOTSUPP;
6312
6313 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6314 return -EOPNOTSUPP;
6315
6316 wiphy = &rdev->wiphy;
6317
6318 if (info->attrs[NL80211_ATTR_MAC]) {
6319 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6320
6321 if (!is_valid_ether_addr(ibss.bssid))
6322 return -EINVAL;
6323 }
6324 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6325 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6326
6327 if (info->attrs[NL80211_ATTR_IE]) {
6328 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6329 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6330 }
6331
6332 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6333 if (err)
6334 return err;
6335
6336 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6337 return -EINVAL;
6338
6339 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6340 return -EINVAL;
6341 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6342 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6343 return -EINVAL;
6344
6345 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6346 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6347
6348 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6349 u8 *rates =
6350 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6351 int n_rates =
6352 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6353 struct ieee80211_supported_band *sband =
6354 wiphy->bands[ibss.chandef.chan->band];
6355
6356 err = ieee80211_get_ratemask(sband, rates, n_rates,
6357 &ibss.basic_rates);
6358 if (err)
6359 return err;
6360 }
6361
6362 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6363 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6364 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6365 return -EINVAL;
6366
6367 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6368 bool no_ht = false;
6369
6370 connkeys = nl80211_parse_connkeys(rdev,
6371 info->attrs[NL80211_ATTR_KEYS],
6372 &no_ht);
6373 if (IS_ERR(connkeys))
6374 return PTR_ERR(connkeys);
6375
6376 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6377 no_ht) {
6378 kfree(connkeys);
6379 return -EINVAL;
6380 }
6381 }
6382
6383 ibss.control_port =
6384 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6385
6386 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6387 if (err)
6388 kfree(connkeys);
6389 return err;
6390 }
6391
6392 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6393 {
6394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6395 struct net_device *dev = info->user_ptr[1];
6396
6397 if (!rdev->ops->leave_ibss)
6398 return -EOPNOTSUPP;
6399
6400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6401 return -EOPNOTSUPP;
6402
6403 return cfg80211_leave_ibss(rdev, dev, false);
6404 }
6405
6406 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6407 {
6408 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6409 struct net_device *dev = info->user_ptr[1];
6410 int mcast_rate[IEEE80211_NUM_BANDS];
6411 u32 nla_rate;
6412 int err;
6413
6414 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6415 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6416 return -EOPNOTSUPP;
6417
6418 if (!rdev->ops->set_mcast_rate)
6419 return -EOPNOTSUPP;
6420
6421 memset(mcast_rate, 0, sizeof(mcast_rate));
6422
6423 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6424 return -EINVAL;
6425
6426 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6427 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6428 return -EINVAL;
6429
6430 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6431
6432 return err;
6433 }
6434
6435 static struct sk_buff *
6436 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6437 int approxlen, u32 portid, u32 seq,
6438 enum nl80211_commands cmd,
6439 enum nl80211_attrs attr,
6440 const struct nl80211_vendor_cmd_info *info,
6441 gfp_t gfp)
6442 {
6443 struct sk_buff *skb;
6444 void *hdr;
6445 struct nlattr *data;
6446
6447 skb = nlmsg_new(approxlen + 100, gfp);
6448 if (!skb)
6449 return NULL;
6450
6451 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6452 if (!hdr) {
6453 kfree_skb(skb);
6454 return NULL;
6455 }
6456
6457 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6458 goto nla_put_failure;
6459
6460 if (info) {
6461 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6462 info->vendor_id))
6463 goto nla_put_failure;
6464 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6465 info->subcmd))
6466 goto nla_put_failure;
6467 }
6468
6469 data = nla_nest_start(skb, attr);
6470
6471 ((void **)skb->cb)[0] = rdev;
6472 ((void **)skb->cb)[1] = hdr;
6473 ((void **)skb->cb)[2] = data;
6474
6475 return skb;
6476
6477 nla_put_failure:
6478 kfree_skb(skb);
6479 return NULL;
6480 }
6481
6482 #ifdef CONFIG_NL80211_TESTMODE
6483 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6484 .name = "testmode",
6485 };
6486
6487 static struct genl_multicast_group nl80211_vendor_mcgrp = {
6488 .name = "vendor",
6489 };
6490
6491 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6492 {
6493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6494 int err;
6495
6496 if (!info->attrs[NL80211_ATTR_TESTDATA])
6497 return -EINVAL;
6498
6499 err = -EOPNOTSUPP;
6500 if (rdev->ops->testmode_cmd) {
6501 rdev->cur_cmd_info = info;
6502 err = rdev_testmode_cmd(rdev,
6503 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6504 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6505 rdev->cur_cmd_info = NULL;
6506 }
6507
6508 return err;
6509 }
6510
6511 static int nl80211_testmode_dump(struct sk_buff *skb,
6512 struct netlink_callback *cb)
6513 {
6514 struct cfg80211_registered_device *rdev;
6515 int err;
6516 long phy_idx;
6517 void *data = NULL;
6518 int data_len = 0;
6519
6520 if (cb->args[0]) {
6521 /*
6522 * 0 is a valid index, but not valid for args[0],
6523 * so we need to offset by 1.
6524 */
6525 phy_idx = cb->args[0] - 1;
6526 } else {
6527 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6528 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6529 nl80211_policy);
6530 if (err)
6531 return err;
6532
6533 mutex_lock(&cfg80211_mutex);
6534 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6535 nl80211_fam.attrbuf);
6536 if (IS_ERR(rdev)) {
6537 mutex_unlock(&cfg80211_mutex);
6538 return PTR_ERR(rdev);
6539 }
6540 phy_idx = rdev->wiphy_idx;
6541 rdev = NULL;
6542 mutex_unlock(&cfg80211_mutex);
6543
6544 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6545 cb->args[1] =
6546 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6547 }
6548
6549 if (cb->args[1]) {
6550 data = nla_data((void *)cb->args[1]);
6551 data_len = nla_len((void *)cb->args[1]);
6552 }
6553
6554 mutex_lock(&cfg80211_mutex);
6555 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6556 if (!rdev) {
6557 mutex_unlock(&cfg80211_mutex);
6558 return -ENOENT;
6559 }
6560 cfg80211_lock_rdev(rdev);
6561 mutex_unlock(&cfg80211_mutex);
6562
6563 if (!rdev->ops->testmode_dump) {
6564 err = -EOPNOTSUPP;
6565 goto out_err;
6566 }
6567
6568 while (1) {
6569 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6570 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6571 NL80211_CMD_TESTMODE);
6572 struct nlattr *tmdata;
6573
6574 if (!hdr)
6575 break;
6576
6577 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6578 genlmsg_cancel(skb, hdr);
6579 break;
6580 }
6581
6582 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6583 if (!tmdata) {
6584 genlmsg_cancel(skb, hdr);
6585 break;
6586 }
6587 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6588 nla_nest_end(skb, tmdata);
6589
6590 if (err == -ENOBUFS || err == -ENOENT) {
6591 genlmsg_cancel(skb, hdr);
6592 break;
6593 } else if (err) {
6594 genlmsg_cancel(skb, hdr);
6595 goto out_err;
6596 }
6597
6598 genlmsg_end(skb, hdr);
6599 }
6600
6601 err = skb->len;
6602 /* see above */
6603 cb->args[0] = phy_idx + 1;
6604 out_err:
6605 cfg80211_unlock_rdev(rdev);
6606 return err;
6607 }
6608
6609 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6610 enum nl80211_commands cmd,
6611 enum nl80211_attrs attr,
6612 int vendor_event_idx,
6613 int approxlen, gfp_t gfp)
6614 {
6615 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6616 const struct nl80211_vendor_cmd_info *info;
6617
6618 switch (cmd) {
6619 case NL80211_CMD_TESTMODE:
6620 if (WARN_ON(vendor_event_idx != -1))
6621 return NULL;
6622 info = NULL;
6623 break;
6624 case NL80211_CMD_VENDOR:
6625 if (WARN_ON(vendor_event_idx < 0 ||
6626 vendor_event_idx >= wiphy->n_vendor_events))
6627 return NULL;
6628 info = &wiphy->vendor_events[vendor_event_idx];
6629 break;
6630 default:
6631 WARN_ON(1);
6632 return NULL;
6633 }
6634 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6635 cmd, attr, info, gfp);
6636 }
6637 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6638
6639 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6640 {
6641 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6642 void *hdr = ((void **)skb->cb)[1];
6643 struct nlattr *data = ((void **)skb->cb)[2];
6644
6645 nla_nest_end(skb, data);
6646 genlmsg_end(skb, hdr);
6647
6648 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6649 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6650 nl80211_vendor_mcgrp.id, gfp);
6651 else
6652 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6653 nl80211_testmode_mcgrp.id, gfp);
6654 }
6655 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6656 #endif
6657
6658 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6659 {
6660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6661 struct net_device *dev = info->user_ptr[1];
6662 struct cfg80211_connect_params connect;
6663 struct wiphy *wiphy;
6664 struct cfg80211_cached_keys *connkeys = NULL;
6665 int err;
6666
6667 memset(&connect, 0, sizeof(connect));
6668
6669 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6670 return -EINVAL;
6671
6672 if (!info->attrs[NL80211_ATTR_SSID] ||
6673 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6674 return -EINVAL;
6675
6676 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6677 connect.auth_type =
6678 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6679 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6680 NL80211_CMD_CONNECT))
6681 return -EINVAL;
6682 } else
6683 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6684
6685 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6686
6687 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6688 NL80211_MAX_NR_CIPHER_SUITES);
6689 if (err)
6690 return err;
6691
6692 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6693 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6694 return -EOPNOTSUPP;
6695
6696 wiphy = &rdev->wiphy;
6697
6698 connect.bg_scan_period = -1;
6699 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6700 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6701 connect.bg_scan_period =
6702 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6703 }
6704
6705 if (info->attrs[NL80211_ATTR_MAC])
6706 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6707 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6708 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6709
6710 if (info->attrs[NL80211_ATTR_IE]) {
6711 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6712 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6713 }
6714
6715 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6716 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6717 if (connect.mfp != NL80211_MFP_REQUIRED &&
6718 connect.mfp != NL80211_MFP_NO)
6719 return -EINVAL;
6720 } else {
6721 connect.mfp = NL80211_MFP_NO;
6722 }
6723
6724 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6725 connect.channel =
6726 ieee80211_get_channel(wiphy,
6727 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6728 if (!connect.channel ||
6729 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6730 return -EINVAL;
6731 }
6732
6733 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6734 connkeys = nl80211_parse_connkeys(rdev,
6735 info->attrs[NL80211_ATTR_KEYS], NULL);
6736 if (IS_ERR(connkeys))
6737 return PTR_ERR(connkeys);
6738 }
6739
6740 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6741 connect.flags |= ASSOC_REQ_DISABLE_HT;
6742
6743 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6744 memcpy(&connect.ht_capa_mask,
6745 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6746 sizeof(connect.ht_capa_mask));
6747
6748 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6749 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6750 kfree(connkeys);
6751 return -EINVAL;
6752 }
6753 memcpy(&connect.ht_capa,
6754 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6755 sizeof(connect.ht_capa));
6756 }
6757
6758 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6759 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6760
6761 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6762 memcpy(&connect.vht_capa_mask,
6763 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6764 sizeof(connect.vht_capa_mask));
6765
6766 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6767 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6768 kfree(connkeys);
6769 return -EINVAL;
6770 }
6771 memcpy(&connect.vht_capa,
6772 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6773 sizeof(connect.vht_capa));
6774 }
6775
6776 err = cfg80211_connect(rdev, dev, &connect, connkeys);
6777 if (err)
6778 kfree(connkeys);
6779 return err;
6780 }
6781
6782 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6783 {
6784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6785 struct net_device *dev = info->user_ptr[1];
6786 u16 reason;
6787
6788 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6789 reason = WLAN_REASON_DEAUTH_LEAVING;
6790 else
6791 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6792
6793 if (reason == 0)
6794 return -EINVAL;
6795
6796 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6797 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6798 return -EOPNOTSUPP;
6799
6800 return cfg80211_disconnect(rdev, dev, reason, true);
6801 }
6802
6803 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6804 {
6805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6806 struct net *net;
6807 int err;
6808 u32 pid;
6809
6810 if (!info->attrs[NL80211_ATTR_PID])
6811 return -EINVAL;
6812
6813 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6814
6815 net = get_net_ns_by_pid(pid);
6816 if (IS_ERR(net))
6817 return PTR_ERR(net);
6818
6819 err = 0;
6820
6821 /* check if anything to do */
6822 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6823 err = cfg80211_switch_netns(rdev, net);
6824
6825 put_net(net);
6826 return err;
6827 }
6828
6829 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6830 {
6831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6832 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6833 struct cfg80211_pmksa *pmksa) = NULL;
6834 struct net_device *dev = info->user_ptr[1];
6835 struct cfg80211_pmksa pmksa;
6836
6837 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6838
6839 if (!info->attrs[NL80211_ATTR_MAC])
6840 return -EINVAL;
6841
6842 if (!info->attrs[NL80211_ATTR_PMKID])
6843 return -EINVAL;
6844
6845 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6846 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6847
6848 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6849 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6850 return -EOPNOTSUPP;
6851
6852 switch (info->genlhdr->cmd) {
6853 case NL80211_CMD_SET_PMKSA:
6854 rdev_ops = rdev->ops->set_pmksa;
6855 break;
6856 case NL80211_CMD_DEL_PMKSA:
6857 rdev_ops = rdev->ops->del_pmksa;
6858 break;
6859 default:
6860 WARN_ON(1);
6861 break;
6862 }
6863
6864 if (!rdev_ops)
6865 return -EOPNOTSUPP;
6866
6867 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6868 }
6869
6870 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6871 {
6872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6873 struct net_device *dev = info->user_ptr[1];
6874
6875 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6876 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6877 return -EOPNOTSUPP;
6878
6879 if (!rdev->ops->flush_pmksa)
6880 return -EOPNOTSUPP;
6881
6882 return rdev_flush_pmksa(rdev, dev);
6883 }
6884
6885 static int nl80211_tdls_mgmt(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 u8 action_code, dialog_token;
6890 u16 status_code;
6891 u8 *peer;
6892
6893 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6894 !rdev->ops->tdls_mgmt)
6895 return -EOPNOTSUPP;
6896
6897 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6898 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6899 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6900 !info->attrs[NL80211_ATTR_IE] ||
6901 !info->attrs[NL80211_ATTR_MAC])
6902 return -EINVAL;
6903
6904 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6905 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6906 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6907 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6908
6909 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6910 dialog_token, status_code,
6911 nla_data(info->attrs[NL80211_ATTR_IE]),
6912 nla_len(info->attrs[NL80211_ATTR_IE]));
6913 }
6914
6915 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6916 {
6917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6918 struct net_device *dev = info->user_ptr[1];
6919 enum nl80211_tdls_operation operation;
6920 u8 *peer;
6921
6922 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6923 !rdev->ops->tdls_oper)
6924 return -EOPNOTSUPP;
6925
6926 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6927 !info->attrs[NL80211_ATTR_MAC])
6928 return -EINVAL;
6929
6930 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6931 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6932
6933 return rdev_tdls_oper(rdev, dev, peer, operation);
6934 }
6935
6936 static int nl80211_remain_on_channel(struct sk_buff *skb,
6937 struct genl_info *info)
6938 {
6939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6940 struct wireless_dev *wdev = info->user_ptr[1];
6941 struct cfg80211_chan_def chandef;
6942 struct sk_buff *msg;
6943 void *hdr;
6944 u64 cookie;
6945 u32 duration;
6946 int err;
6947
6948 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6949 !info->attrs[NL80211_ATTR_DURATION])
6950 return -EINVAL;
6951
6952 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6953
6954 if (!rdev->ops->remain_on_channel ||
6955 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6956 return -EOPNOTSUPP;
6957
6958 /*
6959 * We should be on that channel for at least a minimum amount of
6960 * time (10ms) but no longer than the driver supports.
6961 */
6962 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6963 duration > rdev->wiphy.max_remain_on_channel_duration)
6964 return -EINVAL;
6965
6966 err = nl80211_parse_chandef(rdev, info, &chandef);
6967 if (err)
6968 return err;
6969
6970 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6971 if (!msg)
6972 return -ENOMEM;
6973
6974 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6975 NL80211_CMD_REMAIN_ON_CHANNEL);
6976 if (!hdr) {
6977 err = -ENOBUFS;
6978 goto free_msg;
6979 }
6980
6981 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6982 duration, &cookie);
6983
6984 if (err)
6985 goto free_msg;
6986
6987 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6988 goto nla_put_failure;
6989
6990 genlmsg_end(msg, hdr);
6991
6992 return genlmsg_reply(msg, info);
6993
6994 nla_put_failure:
6995 err = -ENOBUFS;
6996 free_msg:
6997 nlmsg_free(msg);
6998 return err;
6999 }
7000
7001 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7002 struct genl_info *info)
7003 {
7004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7005 struct wireless_dev *wdev = info->user_ptr[1];
7006 u64 cookie;
7007
7008 if (!info->attrs[NL80211_ATTR_COOKIE])
7009 return -EINVAL;
7010
7011 if (!rdev->ops->cancel_remain_on_channel)
7012 return -EOPNOTSUPP;
7013
7014 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7015
7016 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7017 }
7018
7019 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7020 u8 *rates, u8 rates_len)
7021 {
7022 u8 i;
7023 u32 mask = 0;
7024
7025 for (i = 0; i < rates_len; i++) {
7026 int rate = (rates[i] & 0x7f) * 5;
7027 int ridx;
7028 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7029 struct ieee80211_rate *srate =
7030 &sband->bitrates[ridx];
7031 if (rate == srate->bitrate) {
7032 mask |= 1 << ridx;
7033 break;
7034 }
7035 }
7036 if (ridx == sband->n_bitrates)
7037 return 0; /* rate not found */
7038 }
7039
7040 return mask;
7041 }
7042
7043 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7044 u8 *rates, u8 rates_len,
7045 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7046 {
7047 u8 i;
7048
7049 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7050
7051 for (i = 0; i < rates_len; i++) {
7052 int ridx, rbit;
7053
7054 ridx = rates[i] / 8;
7055 rbit = BIT(rates[i] % 8);
7056
7057 /* check validity */
7058 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7059 return false;
7060
7061 /* check availability */
7062 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7063 mcs[ridx] |= rbit;
7064 else
7065 return false;
7066 }
7067
7068 return true;
7069 }
7070
7071 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7072 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7073 .len = NL80211_MAX_SUPP_RATES },
7074 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7075 .len = NL80211_MAX_SUPP_HT_RATES },
7076 };
7077
7078 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7079 struct genl_info *info)
7080 {
7081 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7082 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7083 struct cfg80211_bitrate_mask mask;
7084 int rem, i;
7085 struct net_device *dev = info->user_ptr[1];
7086 struct nlattr *tx_rates;
7087 struct ieee80211_supported_band *sband;
7088
7089 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7090 return -EINVAL;
7091
7092 if (!rdev->ops->set_bitrate_mask)
7093 return -EOPNOTSUPP;
7094
7095 memset(&mask, 0, sizeof(mask));
7096 /* Default to all rates enabled */
7097 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7098 sband = rdev->wiphy.bands[i];
7099 mask.control[i].legacy =
7100 sband ? (1 << sband->n_bitrates) - 1 : 0;
7101 if (sband)
7102 memcpy(mask.control[i].mcs,
7103 sband->ht_cap.mcs.rx_mask,
7104 sizeof(mask.control[i].mcs));
7105 else
7106 memset(mask.control[i].mcs, 0,
7107 sizeof(mask.control[i].mcs));
7108 }
7109
7110 /*
7111 * The nested attribute uses enum nl80211_band as the index. This maps
7112 * directly to the enum ieee80211_band values used in cfg80211.
7113 */
7114 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7115 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7116 {
7117 enum ieee80211_band band = nla_type(tx_rates);
7118 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7119 return -EINVAL;
7120 sband = rdev->wiphy.bands[band];
7121 if (sband == NULL)
7122 return -EINVAL;
7123 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7124 nla_len(tx_rates), nl80211_txattr_policy);
7125 if (tb[NL80211_TXRATE_LEGACY]) {
7126 mask.control[band].legacy = rateset_to_mask(
7127 sband,
7128 nla_data(tb[NL80211_TXRATE_LEGACY]),
7129 nla_len(tb[NL80211_TXRATE_LEGACY]));
7130 if ((mask.control[band].legacy == 0) &&
7131 nla_len(tb[NL80211_TXRATE_LEGACY]))
7132 return -EINVAL;
7133 }
7134 if (tb[NL80211_TXRATE_MCS]) {
7135 if (!ht_rateset_to_mask(
7136 sband,
7137 nla_data(tb[NL80211_TXRATE_MCS]),
7138 nla_len(tb[NL80211_TXRATE_MCS]),
7139 mask.control[band].mcs))
7140 return -EINVAL;
7141 }
7142
7143 if (mask.control[band].legacy == 0) {
7144 /* don't allow empty legacy rates if HT
7145 * is not even supported. */
7146 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7147 return -EINVAL;
7148
7149 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7150 if (mask.control[band].mcs[i])
7151 break;
7152
7153 /* legacy and mcs rates may not be both empty */
7154 if (i == IEEE80211_HT_MCS_MASK_LEN)
7155 return -EINVAL;
7156 }
7157 }
7158
7159 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7160 }
7161
7162 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7163 {
7164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7165 struct wireless_dev *wdev = info->user_ptr[1];
7166 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7167
7168 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7169 return -EINVAL;
7170
7171 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7172 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7173
7174 switch (wdev->iftype) {
7175 case NL80211_IFTYPE_STATION:
7176 case NL80211_IFTYPE_ADHOC:
7177 case NL80211_IFTYPE_P2P_CLIENT:
7178 case NL80211_IFTYPE_AP:
7179 case NL80211_IFTYPE_AP_VLAN:
7180 case NL80211_IFTYPE_MESH_POINT:
7181 case NL80211_IFTYPE_P2P_GO:
7182 case NL80211_IFTYPE_P2P_DEVICE:
7183 break;
7184 default:
7185 return -EOPNOTSUPP;
7186 }
7187
7188 /* not much point in registering if we can't reply */
7189 if (!rdev->ops->mgmt_tx)
7190 return -EOPNOTSUPP;
7191
7192 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7193 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7194 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7195 }
7196
7197 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7198 {
7199 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7200 struct wireless_dev *wdev = info->user_ptr[1];
7201 struct cfg80211_chan_def chandef;
7202 int err;
7203 void *hdr = NULL;
7204 u64 cookie;
7205 struct sk_buff *msg = NULL;
7206 unsigned int wait = 0;
7207 bool offchan, no_cck, dont_wait_for_ack;
7208
7209 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7210
7211 if (!info->attrs[NL80211_ATTR_FRAME])
7212 return -EINVAL;
7213
7214 if (!rdev->ops->mgmt_tx)
7215 return -EOPNOTSUPP;
7216
7217 switch (wdev->iftype) {
7218 case NL80211_IFTYPE_STATION:
7219 case NL80211_IFTYPE_ADHOC:
7220 case NL80211_IFTYPE_P2P_CLIENT:
7221 case NL80211_IFTYPE_AP:
7222 case NL80211_IFTYPE_AP_VLAN:
7223 case NL80211_IFTYPE_MESH_POINT:
7224 case NL80211_IFTYPE_P2P_GO:
7225 case NL80211_IFTYPE_P2P_DEVICE:
7226 break;
7227 default:
7228 return -EOPNOTSUPP;
7229 }
7230
7231 if (info->attrs[NL80211_ATTR_DURATION]) {
7232 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7233 return -EINVAL;
7234 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7235
7236 /*
7237 * We should wait on the channel for at least a minimum amount
7238 * of time (10ms) but no longer than the driver supports.
7239 */
7240 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7241 wait > rdev->wiphy.max_remain_on_channel_duration)
7242 return -EINVAL;
7243
7244 }
7245
7246 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7247
7248 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7249 return -EINVAL;
7250
7251 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7252
7253 err = nl80211_parse_chandef(rdev, info, &chandef);
7254 if (err)
7255 return err;
7256
7257 if (!dont_wait_for_ack) {
7258 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7259 if (!msg)
7260 return -ENOMEM;
7261
7262 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7263 NL80211_CMD_FRAME);
7264 if (!hdr) {
7265 err = -ENOBUFS;
7266 goto free_msg;
7267 }
7268 }
7269
7270 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7271 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7272 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7273 no_cck, dont_wait_for_ack, &cookie);
7274 if (err)
7275 goto free_msg;
7276
7277 if (msg) {
7278 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7279 goto nla_put_failure;
7280
7281 genlmsg_end(msg, hdr);
7282 return genlmsg_reply(msg, info);
7283 }
7284
7285 return 0;
7286
7287 nla_put_failure:
7288 err = -ENOBUFS;
7289 free_msg:
7290 nlmsg_free(msg);
7291 return err;
7292 }
7293
7294 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7295 {
7296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7297 struct wireless_dev *wdev = info->user_ptr[1];
7298 u64 cookie;
7299
7300 if (!info->attrs[NL80211_ATTR_COOKIE])
7301 return -EINVAL;
7302
7303 if (!rdev->ops->mgmt_tx_cancel_wait)
7304 return -EOPNOTSUPP;
7305
7306 switch (wdev->iftype) {
7307 case NL80211_IFTYPE_STATION:
7308 case NL80211_IFTYPE_ADHOC:
7309 case NL80211_IFTYPE_P2P_CLIENT:
7310 case NL80211_IFTYPE_AP:
7311 case NL80211_IFTYPE_AP_VLAN:
7312 case NL80211_IFTYPE_P2P_GO:
7313 case NL80211_IFTYPE_P2P_DEVICE:
7314 break;
7315 default:
7316 return -EOPNOTSUPP;
7317 }
7318
7319 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7320
7321 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7322 }
7323
7324 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7325 {
7326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7327 struct wireless_dev *wdev;
7328 struct net_device *dev = info->user_ptr[1];
7329 u8 ps_state;
7330 bool state;
7331 int err;
7332
7333 if (!info->attrs[NL80211_ATTR_PS_STATE])
7334 return -EINVAL;
7335
7336 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7337
7338 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7339 return -EINVAL;
7340
7341 wdev = dev->ieee80211_ptr;
7342
7343 if (!rdev->ops->set_power_mgmt)
7344 return -EOPNOTSUPP;
7345
7346 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7347
7348 if (state == wdev->ps)
7349 return 0;
7350
7351 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7352 if (!err)
7353 wdev->ps = state;
7354 return err;
7355 }
7356
7357 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7358 {
7359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7360 enum nl80211_ps_state ps_state;
7361 struct wireless_dev *wdev;
7362 struct net_device *dev = info->user_ptr[1];
7363 struct sk_buff *msg;
7364 void *hdr;
7365 int err;
7366
7367 wdev = dev->ieee80211_ptr;
7368
7369 if (!rdev->ops->set_power_mgmt)
7370 return -EOPNOTSUPP;
7371
7372 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7373 if (!msg)
7374 return -ENOMEM;
7375
7376 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7377 NL80211_CMD_GET_POWER_SAVE);
7378 if (!hdr) {
7379 err = -ENOBUFS;
7380 goto free_msg;
7381 }
7382
7383 if (wdev->ps)
7384 ps_state = NL80211_PS_ENABLED;
7385 else
7386 ps_state = NL80211_PS_DISABLED;
7387
7388 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7389 goto nla_put_failure;
7390
7391 genlmsg_end(msg, hdr);
7392 return genlmsg_reply(msg, info);
7393
7394 nla_put_failure:
7395 err = -ENOBUFS;
7396 free_msg:
7397 nlmsg_free(msg);
7398 return err;
7399 }
7400
7401 static struct nla_policy
7402 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7403 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7404 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7405 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7406 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7407 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7408 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7409 };
7410
7411 static int nl80211_set_cqm_txe(struct genl_info *info,
7412 u32 rate, u32 pkts, u32 intvl)
7413 {
7414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7415 struct wireless_dev *wdev;
7416 struct net_device *dev = info->user_ptr[1];
7417
7418 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7419 return -EINVAL;
7420
7421 wdev = dev->ieee80211_ptr;
7422
7423 if (!rdev->ops->set_cqm_txe_config)
7424 return -EOPNOTSUPP;
7425
7426 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7427 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7428 return -EOPNOTSUPP;
7429
7430 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7431 }
7432
7433 static int nl80211_set_cqm_rssi(struct genl_info *info,
7434 s32 threshold, u32 hysteresis)
7435 {
7436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7437 struct wireless_dev *wdev;
7438 struct net_device *dev = info->user_ptr[1];
7439
7440 if (threshold > 0)
7441 return -EINVAL;
7442
7443 wdev = dev->ieee80211_ptr;
7444
7445 if (!rdev->ops->set_cqm_rssi_config)
7446 return -EOPNOTSUPP;
7447
7448 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7449 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7450 return -EOPNOTSUPP;
7451
7452 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7453 }
7454
7455 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7456 {
7457 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7458 struct nlattr *cqm;
7459 int err;
7460
7461 cqm = info->attrs[NL80211_ATTR_CQM];
7462 if (!cqm) {
7463 err = -EINVAL;
7464 goto out;
7465 }
7466
7467 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7468 nl80211_attr_cqm_policy);
7469 if (err)
7470 goto out;
7471
7472 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7473 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7474 s32 threshold;
7475 u32 hysteresis;
7476 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7477 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7478 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7479 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7480 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7481 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7482 u32 rate, pkts, intvl;
7483 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7484 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7485 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7486 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7487 } else
7488 err = -EINVAL;
7489
7490 out:
7491 return err;
7492 }
7493
7494 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7495 {
7496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7497 struct net_device *dev = info->user_ptr[1];
7498 struct mesh_config cfg;
7499 struct mesh_setup setup;
7500 int err;
7501
7502 /* start with default */
7503 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7504 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7505
7506 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7507 /* and parse parameters if given */
7508 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7509 if (err)
7510 return err;
7511 }
7512
7513 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7514 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7515 return -EINVAL;
7516
7517 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7518 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7519
7520 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7521 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7522 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7523 return -EINVAL;
7524
7525 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7526 setup.beacon_interval =
7527 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7528 if (setup.beacon_interval < 10 ||
7529 setup.beacon_interval > 10000)
7530 return -EINVAL;
7531 }
7532
7533 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7534 setup.dtim_period =
7535 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7536 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7537 return -EINVAL;
7538 }
7539
7540 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7541 /* parse additional setup parameters if given */
7542 err = nl80211_parse_mesh_setup(info, &setup);
7543 if (err)
7544 return err;
7545 }
7546
7547 if (setup.user_mpm)
7548 cfg.auto_open_plinks = false;
7549
7550 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7551 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7552 if (err)
7553 return err;
7554 } else {
7555 /* cfg80211_join_mesh() will sort it out */
7556 setup.chandef.chan = NULL;
7557 }
7558
7559 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7560 }
7561
7562 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7563 {
7564 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7565 struct net_device *dev = info->user_ptr[1];
7566
7567 return cfg80211_leave_mesh(rdev, dev);
7568 }
7569
7570 #ifdef CONFIG_PM
7571 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7572 struct cfg80211_registered_device *rdev)
7573 {
7574 struct nlattr *nl_pats, *nl_pat;
7575 int i, pat_len;
7576
7577 if (!rdev->wowlan->n_patterns)
7578 return 0;
7579
7580 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7581 if (!nl_pats)
7582 return -ENOBUFS;
7583
7584 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
7585 nl_pat = nla_nest_start(msg, i + 1);
7586 if (!nl_pat)
7587 return -ENOBUFS;
7588 pat_len = rdev->wowlan->patterns[i].pattern_len;
7589 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7590 DIV_ROUND_UP(pat_len, 8),
7591 rdev->wowlan->patterns[i].mask) ||
7592 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7593 pat_len, rdev->wowlan->patterns[i].pattern) ||
7594 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7595 rdev->wowlan->patterns[i].pkt_offset))
7596 return -ENOBUFS;
7597 nla_nest_end(msg, nl_pat);
7598 }
7599 nla_nest_end(msg, nl_pats);
7600
7601 return 0;
7602 }
7603
7604 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7605 struct cfg80211_wowlan_tcp *tcp)
7606 {
7607 struct nlattr *nl_tcp;
7608
7609 if (!tcp)
7610 return 0;
7611
7612 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7613 if (!nl_tcp)
7614 return -ENOBUFS;
7615
7616 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7617 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7618 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7619 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7620 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7621 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7622 tcp->payload_len, tcp->payload) ||
7623 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7624 tcp->data_interval) ||
7625 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7626 tcp->wake_len, tcp->wake_data) ||
7627 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7628 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7629 return -ENOBUFS;
7630
7631 if (tcp->payload_seq.len &&
7632 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7633 sizeof(tcp->payload_seq), &tcp->payload_seq))
7634 return -ENOBUFS;
7635
7636 if (tcp->payload_tok.len &&
7637 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7638 sizeof(tcp->payload_tok) + tcp->tokens_size,
7639 &tcp->payload_tok))
7640 return -ENOBUFS;
7641
7642 nla_nest_end(msg, nl_tcp);
7643
7644 return 0;
7645 }
7646
7647 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7648 {
7649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7650 struct sk_buff *msg;
7651 void *hdr;
7652 u32 size = NLMSG_DEFAULT_SIZE;
7653
7654 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7655 !rdev->wiphy.wowlan.tcp)
7656 return -EOPNOTSUPP;
7657
7658 if (rdev->wowlan && rdev->wowlan->tcp) {
7659 /* adjust size to have room for all the data */
7660 size += rdev->wowlan->tcp->tokens_size +
7661 rdev->wowlan->tcp->payload_len +
7662 rdev->wowlan->tcp->wake_len +
7663 rdev->wowlan->tcp->wake_len / 8;
7664 }
7665
7666 msg = nlmsg_new(size, GFP_KERNEL);
7667 if (!msg)
7668 return -ENOMEM;
7669
7670 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7671 NL80211_CMD_GET_WOWLAN);
7672 if (!hdr)
7673 goto nla_put_failure;
7674
7675 if (rdev->wowlan) {
7676 struct nlattr *nl_wowlan;
7677
7678 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7679 if (!nl_wowlan)
7680 goto nla_put_failure;
7681
7682 if ((rdev->wowlan->any &&
7683 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7684 (rdev->wowlan->disconnect &&
7685 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7686 (rdev->wowlan->magic_pkt &&
7687 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7688 (rdev->wowlan->gtk_rekey_failure &&
7689 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7690 (rdev->wowlan->eap_identity_req &&
7691 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7692 (rdev->wowlan->four_way_handshake &&
7693 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7694 (rdev->wowlan->rfkill_release &&
7695 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7696 goto nla_put_failure;
7697
7698 if (nl80211_send_wowlan_patterns(msg, rdev))
7699 goto nla_put_failure;
7700
7701 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
7702 goto nla_put_failure;
7703
7704 nla_nest_end(msg, nl_wowlan);
7705 }
7706
7707 genlmsg_end(msg, hdr);
7708 return genlmsg_reply(msg, info);
7709
7710 nla_put_failure:
7711 nlmsg_free(msg);
7712 return -ENOBUFS;
7713 }
7714
7715 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7716 struct nlattr *attr,
7717 struct cfg80211_wowlan *trig)
7718 {
7719 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7720 struct cfg80211_wowlan_tcp *cfg;
7721 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7722 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7723 u32 size;
7724 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7725 int err, port;
7726
7727 if (!rdev->wiphy.wowlan.tcp)
7728 return -EINVAL;
7729
7730 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7731 nla_data(attr), nla_len(attr),
7732 nl80211_wowlan_tcp_policy);
7733 if (err)
7734 return err;
7735
7736 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7737 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7738 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7739 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7740 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7741 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7742 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7743 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7744 return -EINVAL;
7745
7746 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7747 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7748 return -EINVAL;
7749
7750 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7751 rdev->wiphy.wowlan.tcp->data_interval_max ||
7752 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7753 return -EINVAL;
7754
7755 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7756 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7757 return -EINVAL;
7758
7759 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7760 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7761 return -EINVAL;
7762
7763 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7764 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7765
7766 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7767 tokens_size = tokln - sizeof(*tok);
7768
7769 if (!tok->len || tokens_size % tok->len)
7770 return -EINVAL;
7771 if (!rdev->wiphy.wowlan.tcp->tok)
7772 return -EINVAL;
7773 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7774 return -EINVAL;
7775 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7776 return -EINVAL;
7777 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7778 return -EINVAL;
7779 if (tok->offset + tok->len > data_size)
7780 return -EINVAL;
7781 }
7782
7783 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7784 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7785 if (!rdev->wiphy.wowlan.tcp->seq)
7786 return -EINVAL;
7787 if (seq->len == 0 || seq->len > 4)
7788 return -EINVAL;
7789 if (seq->len + seq->offset > data_size)
7790 return -EINVAL;
7791 }
7792
7793 size = sizeof(*cfg);
7794 size += data_size;
7795 size += wake_size + wake_mask_size;
7796 size += tokens_size;
7797
7798 cfg = kzalloc(size, GFP_KERNEL);
7799 if (!cfg)
7800 return -ENOMEM;
7801 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7802 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7803 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7804 ETH_ALEN);
7805 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7806 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7807 else
7808 port = 0;
7809 #ifdef CONFIG_INET
7810 /* allocate a socket and port for it and use it */
7811 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7812 IPPROTO_TCP, &cfg->sock, 1);
7813 if (err) {
7814 kfree(cfg);
7815 return err;
7816 }
7817 if (inet_csk_get_port(cfg->sock->sk, port)) {
7818 sock_release(cfg->sock);
7819 kfree(cfg);
7820 return -EADDRINUSE;
7821 }
7822 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7823 #else
7824 if (!port) {
7825 kfree(cfg);
7826 return -EINVAL;
7827 }
7828 cfg->src_port = port;
7829 #endif
7830
7831 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7832 cfg->payload_len = data_size;
7833 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7834 memcpy((void *)cfg->payload,
7835 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7836 data_size);
7837 if (seq)
7838 cfg->payload_seq = *seq;
7839 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7840 cfg->wake_len = wake_size;
7841 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7842 memcpy((void *)cfg->wake_data,
7843 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7844 wake_size);
7845 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7846 data_size + wake_size;
7847 memcpy((void *)cfg->wake_mask,
7848 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7849 wake_mask_size);
7850 if (tok) {
7851 cfg->tokens_size = tokens_size;
7852 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7853 }
7854
7855 trig->tcp = cfg;
7856
7857 return 0;
7858 }
7859
7860 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7861 {
7862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7863 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7864 struct cfg80211_wowlan new_triggers = {};
7865 struct cfg80211_wowlan *ntrig;
7866 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7867 int err, i;
7868 bool prev_enabled = rdev->wowlan;
7869
7870 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7871 !rdev->wiphy.wowlan.tcp)
7872 return -EOPNOTSUPP;
7873
7874 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7875 cfg80211_rdev_free_wowlan(rdev);
7876 rdev->wowlan = NULL;
7877 goto set_wakeup;
7878 }
7879
7880 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7881 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7882 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7883 nl80211_wowlan_policy);
7884 if (err)
7885 return err;
7886
7887 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7888 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7889 return -EINVAL;
7890 new_triggers.any = true;
7891 }
7892
7893 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7894 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7895 return -EINVAL;
7896 new_triggers.disconnect = true;
7897 }
7898
7899 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7900 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7901 return -EINVAL;
7902 new_triggers.magic_pkt = true;
7903 }
7904
7905 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7906 return -EINVAL;
7907
7908 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7909 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7910 return -EINVAL;
7911 new_triggers.gtk_rekey_failure = true;
7912 }
7913
7914 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7915 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7916 return -EINVAL;
7917 new_triggers.eap_identity_req = true;
7918 }
7919
7920 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7921 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7922 return -EINVAL;
7923 new_triggers.four_way_handshake = true;
7924 }
7925
7926 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7927 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7928 return -EINVAL;
7929 new_triggers.rfkill_release = true;
7930 }
7931
7932 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7933 struct nlattr *pat;
7934 int n_patterns = 0;
7935 int rem, pat_len, mask_len, pkt_offset;
7936 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7937
7938 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7939 rem)
7940 n_patterns++;
7941 if (n_patterns > wowlan->n_patterns)
7942 return -EINVAL;
7943
7944 new_triggers.patterns = kcalloc(n_patterns,
7945 sizeof(new_triggers.patterns[0]),
7946 GFP_KERNEL);
7947 if (!new_triggers.patterns)
7948 return -ENOMEM;
7949
7950 new_triggers.n_patterns = n_patterns;
7951 i = 0;
7952
7953 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7954 rem) {
7955 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7956 nla_data(pat), nla_len(pat), NULL);
7957 err = -EINVAL;
7958 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7959 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7960 goto error;
7961 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7962 mask_len = DIV_ROUND_UP(pat_len, 8);
7963 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7964 mask_len)
7965 goto error;
7966 if (pat_len > wowlan->pattern_max_len ||
7967 pat_len < wowlan->pattern_min_len)
7968 goto error;
7969
7970 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7971 pkt_offset = 0;
7972 else
7973 pkt_offset = nla_get_u32(
7974 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7975 if (pkt_offset > wowlan->max_pkt_offset)
7976 goto error;
7977 new_triggers.patterns[i].pkt_offset = pkt_offset;
7978
7979 new_triggers.patterns[i].mask =
7980 kmalloc(mask_len + pat_len, GFP_KERNEL);
7981 if (!new_triggers.patterns[i].mask) {
7982 err = -ENOMEM;
7983 goto error;
7984 }
7985 new_triggers.patterns[i].pattern =
7986 new_triggers.patterns[i].mask + mask_len;
7987 memcpy(new_triggers.patterns[i].mask,
7988 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7989 mask_len);
7990 new_triggers.patterns[i].pattern_len = pat_len;
7991 memcpy(new_triggers.patterns[i].pattern,
7992 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7993 pat_len);
7994 i++;
7995 }
7996 }
7997
7998 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
7999 err = nl80211_parse_wowlan_tcp(
8000 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8001 &new_triggers);
8002 if (err)
8003 goto error;
8004 }
8005
8006 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8007 if (!ntrig) {
8008 err = -ENOMEM;
8009 goto error;
8010 }
8011 cfg80211_rdev_free_wowlan(rdev);
8012 rdev->wowlan = ntrig;
8013
8014 set_wakeup:
8015 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
8016 rdev_set_wakeup(rdev, rdev->wowlan);
8017
8018 return 0;
8019 error:
8020 for (i = 0; i < new_triggers.n_patterns; i++)
8021 kfree(new_triggers.patterns[i].mask);
8022 kfree(new_triggers.patterns);
8023 if (new_triggers.tcp && new_triggers.tcp->sock)
8024 sock_release(new_triggers.tcp->sock);
8025 kfree(new_triggers.tcp);
8026 return err;
8027 }
8028 #endif
8029
8030 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8031 {
8032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8033 struct net_device *dev = info->user_ptr[1];
8034 struct wireless_dev *wdev = dev->ieee80211_ptr;
8035 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8036 struct cfg80211_gtk_rekey_data rekey_data;
8037 int err;
8038
8039 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8040 return -EINVAL;
8041
8042 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8043 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8044 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8045 nl80211_rekey_policy);
8046 if (err)
8047 return err;
8048
8049 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8050 return -ERANGE;
8051 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8052 return -ERANGE;
8053 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8054 return -ERANGE;
8055
8056 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8057 NL80211_KEK_LEN);
8058 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8059 NL80211_KCK_LEN);
8060 memcpy(rekey_data.replay_ctr,
8061 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8062 NL80211_REPLAY_CTR_LEN);
8063
8064 wdev_lock(wdev);
8065 if (!wdev->current_bss) {
8066 err = -ENOTCONN;
8067 goto out;
8068 }
8069
8070 if (!rdev->ops->set_rekey_data) {
8071 err = -EOPNOTSUPP;
8072 goto out;
8073 }
8074
8075 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8076 out:
8077 wdev_unlock(wdev);
8078 return err;
8079 }
8080
8081 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8082 struct genl_info *info)
8083 {
8084 struct net_device *dev = info->user_ptr[1];
8085 struct wireless_dev *wdev = dev->ieee80211_ptr;
8086
8087 if (wdev->iftype != NL80211_IFTYPE_AP &&
8088 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8089 return -EINVAL;
8090
8091 if (wdev->ap_unexpected_nlportid)
8092 return -EBUSY;
8093
8094 wdev->ap_unexpected_nlportid = info->snd_portid;
8095 return 0;
8096 }
8097
8098 static int nl80211_probe_client(struct sk_buff *skb,
8099 struct genl_info *info)
8100 {
8101 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8102 struct net_device *dev = info->user_ptr[1];
8103 struct wireless_dev *wdev = dev->ieee80211_ptr;
8104 struct sk_buff *msg;
8105 void *hdr;
8106 const u8 *addr;
8107 u64 cookie;
8108 int err;
8109
8110 if (wdev->iftype != NL80211_IFTYPE_AP &&
8111 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8112 return -EOPNOTSUPP;
8113
8114 if (!info->attrs[NL80211_ATTR_MAC])
8115 return -EINVAL;
8116
8117 if (!rdev->ops->probe_client)
8118 return -EOPNOTSUPP;
8119
8120 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8121 if (!msg)
8122 return -ENOMEM;
8123
8124 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8125 NL80211_CMD_PROBE_CLIENT);
8126 if (!hdr) {
8127 err = -ENOBUFS;
8128 goto free_msg;
8129 }
8130
8131 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8132
8133 err = rdev_probe_client(rdev, dev, addr, &cookie);
8134 if (err)
8135 goto free_msg;
8136
8137 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8138 goto nla_put_failure;
8139
8140 genlmsg_end(msg, hdr);
8141
8142 return genlmsg_reply(msg, info);
8143
8144 nla_put_failure:
8145 err = -ENOBUFS;
8146 free_msg:
8147 nlmsg_free(msg);
8148 return err;
8149 }
8150
8151 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8152 {
8153 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8154 struct cfg80211_beacon_registration *reg, *nreg;
8155 int rv;
8156
8157 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8158 return -EOPNOTSUPP;
8159
8160 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8161 if (!nreg)
8162 return -ENOMEM;
8163
8164 /* First, check if already registered. */
8165 spin_lock_bh(&rdev->beacon_registrations_lock);
8166 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8167 if (reg->nlportid == info->snd_portid) {
8168 rv = -EALREADY;
8169 goto out_err;
8170 }
8171 }
8172 /* Add it to the list */
8173 nreg->nlportid = info->snd_portid;
8174 list_add(&nreg->list, &rdev->beacon_registrations);
8175
8176 spin_unlock_bh(&rdev->beacon_registrations_lock);
8177
8178 return 0;
8179 out_err:
8180 spin_unlock_bh(&rdev->beacon_registrations_lock);
8181 kfree(nreg);
8182 return rv;
8183 }
8184
8185 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8186 {
8187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8188 struct wireless_dev *wdev = info->user_ptr[1];
8189 int err;
8190
8191 if (!rdev->ops->start_p2p_device)
8192 return -EOPNOTSUPP;
8193
8194 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8195 return -EOPNOTSUPP;
8196
8197 if (wdev->p2p_started)
8198 return 0;
8199
8200 mutex_lock(&rdev->devlist_mtx);
8201 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8202 mutex_unlock(&rdev->devlist_mtx);
8203 if (err)
8204 return err;
8205
8206 err = rdev_start_p2p_device(rdev, wdev);
8207 if (err)
8208 return err;
8209
8210 wdev->p2p_started = true;
8211 mutex_lock(&rdev->devlist_mtx);
8212 rdev->opencount++;
8213 mutex_unlock(&rdev->devlist_mtx);
8214
8215 return 0;
8216 }
8217
8218 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8219 {
8220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8221 struct wireless_dev *wdev = info->user_ptr[1];
8222
8223 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8224 return -EOPNOTSUPP;
8225
8226 if (!rdev->ops->stop_p2p_device)
8227 return -EOPNOTSUPP;
8228
8229 mutex_lock(&rdev->devlist_mtx);
8230 mutex_lock(&rdev->sched_scan_mtx);
8231 cfg80211_stop_p2p_device(rdev, wdev);
8232 mutex_unlock(&rdev->sched_scan_mtx);
8233 mutex_unlock(&rdev->devlist_mtx);
8234
8235 return 0;
8236 }
8237
8238 static int nl80211_get_protocol_features(struct sk_buff *skb,
8239 struct genl_info *info)
8240 {
8241 void *hdr;
8242 struct sk_buff *msg;
8243
8244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8245 if (!msg)
8246 return -ENOMEM;
8247
8248 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8249 NL80211_CMD_GET_PROTOCOL_FEATURES);
8250 if (!hdr)
8251 goto nla_put_failure;
8252
8253 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8254 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8255 goto nla_put_failure;
8256
8257 genlmsg_end(msg, hdr);
8258 return genlmsg_reply(msg, info);
8259
8260 nla_put_failure:
8261 kfree_skb(msg);
8262 return -ENOBUFS;
8263 }
8264
8265 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8266 {
8267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8268 struct cfg80211_update_ft_ies_params ft_params;
8269 struct net_device *dev = info->user_ptr[1];
8270
8271 if (!rdev->ops->update_ft_ies)
8272 return -EOPNOTSUPP;
8273
8274 if (!info->attrs[NL80211_ATTR_MDID] ||
8275 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8276 return -EINVAL;
8277
8278 memset(&ft_params, 0, sizeof(ft_params));
8279 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8280 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8281 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8282
8283 return rdev_update_ft_ies(rdev, dev, &ft_params);
8284 }
8285
8286 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8287 struct genl_info *info)
8288 {
8289 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8290 struct wireless_dev *wdev = info->user_ptr[1];
8291 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8292 u16 duration;
8293 int ret;
8294
8295 if (!rdev->ops->crit_proto_start)
8296 return -EOPNOTSUPP;
8297
8298 if (WARN_ON(!rdev->ops->crit_proto_stop))
8299 return -EINVAL;
8300
8301 if (rdev->crit_proto_nlportid)
8302 return -EBUSY;
8303
8304 /* determine protocol if provided */
8305 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8306 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8307
8308 if (proto >= NUM_NL80211_CRIT_PROTO)
8309 return -EINVAL;
8310
8311 /* timeout must be provided */
8312 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8313 return -EINVAL;
8314
8315 duration =
8316 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8317
8318 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8319 return -ERANGE;
8320
8321 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8322 if (!ret)
8323 rdev->crit_proto_nlportid = info->snd_portid;
8324
8325 return ret;
8326 }
8327
8328 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8329 struct genl_info *info)
8330 {
8331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8332 struct wireless_dev *wdev = info->user_ptr[1];
8333
8334 if (!rdev->ops->crit_proto_stop)
8335 return -EOPNOTSUPP;
8336
8337 if (rdev->crit_proto_nlportid) {
8338 rdev->crit_proto_nlportid = 0;
8339 rdev_crit_proto_stop(rdev, wdev);
8340 }
8341 return 0;
8342 }
8343
8344 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
8345 {
8346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8347 struct wireless_dev *wdev =
8348 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8349 int i, err;
8350 u32 vid, subcmd;
8351
8352 if (!rdev || !rdev->wiphy.vendor_commands)
8353 return -EOPNOTSUPP;
8354
8355 if (IS_ERR(wdev)) {
8356 err = PTR_ERR(wdev);
8357 if (err != -EINVAL)
8358 return err;
8359 wdev = NULL;
8360 } else if (wdev->wiphy != &rdev->wiphy) {
8361 return -EINVAL;
8362 }
8363
8364 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
8365 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
8366 return -EINVAL;
8367
8368 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
8369 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
8370 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
8371 const struct wiphy_vendor_command *vcmd;
8372 void *data = NULL;
8373 int len = 0;
8374
8375 vcmd = &rdev->wiphy.vendor_commands[i];
8376
8377 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
8378 continue;
8379
8380 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
8381 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
8382 if (!wdev)
8383 return -EINVAL;
8384 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
8385 !wdev->netdev)
8386 return -EINVAL;
8387
8388 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
8389 if (!wdev->netdev ||
8390 !netif_running(wdev->netdev))
8391 return -ENETDOWN;
8392 }
8393 } else {
8394 wdev = NULL;
8395 }
8396
8397 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
8398 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8399 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
8400 }
8401
8402 rdev->cur_cmd_info = info;
8403 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
8404 data, len);
8405 rdev->cur_cmd_info = NULL;
8406 return err;
8407 }
8408
8409 return -EOPNOTSUPP;
8410 }
8411
8412 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
8413 enum nl80211_commands cmd,
8414 enum nl80211_attrs attr,
8415 int approxlen)
8416 {
8417 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8418
8419 if (WARN_ON(!rdev->cur_cmd_info))
8420 return NULL;
8421
8422 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
8423 0,
8424 0,
8425 cmd, attr, NULL, GFP_KERNEL);
8426 }
8427 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
8428
8429 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
8430 {
8431 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8432 void *hdr = ((void **)skb->cb)[1];
8433 struct nlattr *data = ((void **)skb->cb)[2];
8434
8435 if (WARN_ON(!rdev->cur_cmd_info)) {
8436 kfree_skb(skb);
8437 return -EINVAL;
8438 }
8439
8440 nla_nest_end(skb, data);
8441 genlmsg_end(skb, hdr);
8442 return genlmsg_reply(skb, rdev->cur_cmd_info);
8443 }
8444 EXPORT_SYMBOL(cfg80211_vendor_cmd_reply);
8445
8446 #define NL80211_FLAG_NEED_WIPHY 0x01
8447 #define NL80211_FLAG_NEED_NETDEV 0x02
8448 #define NL80211_FLAG_NEED_RTNL 0x04
8449 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8450 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8451 NL80211_FLAG_CHECK_NETDEV_UP)
8452 #define NL80211_FLAG_NEED_WDEV 0x10
8453 /* If a netdev is associated, it must be UP, P2P must be started */
8454 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8455 NL80211_FLAG_CHECK_NETDEV_UP)
8456
8457 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8458 struct genl_info *info)
8459 {
8460 struct cfg80211_registered_device *rdev;
8461 struct wireless_dev *wdev;
8462 struct net_device *dev;
8463 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8464
8465 if (rtnl)
8466 rtnl_lock();
8467
8468 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8469 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8470 if (IS_ERR(rdev)) {
8471 if (rtnl)
8472 rtnl_unlock();
8473 return PTR_ERR(rdev);
8474 }
8475 info->user_ptr[0] = rdev;
8476 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8477 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8478 mutex_lock(&cfg80211_mutex);
8479 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8480 info->attrs);
8481 if (IS_ERR(wdev)) {
8482 mutex_unlock(&cfg80211_mutex);
8483 if (rtnl)
8484 rtnl_unlock();
8485 return PTR_ERR(wdev);
8486 }
8487
8488 dev = wdev->netdev;
8489 rdev = wiphy_to_dev(wdev->wiphy);
8490
8491 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8492 if (!dev) {
8493 mutex_unlock(&cfg80211_mutex);
8494 if (rtnl)
8495 rtnl_unlock();
8496 return -EINVAL;
8497 }
8498
8499 info->user_ptr[1] = dev;
8500 } else {
8501 info->user_ptr[1] = wdev;
8502 }
8503
8504 if (dev) {
8505 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8506 !netif_running(dev)) {
8507 mutex_unlock(&cfg80211_mutex);
8508 if (rtnl)
8509 rtnl_unlock();
8510 return -ENETDOWN;
8511 }
8512
8513 dev_hold(dev);
8514 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8515 if (!wdev->p2p_started) {
8516 mutex_unlock(&cfg80211_mutex);
8517 if (rtnl)
8518 rtnl_unlock();
8519 return -ENETDOWN;
8520 }
8521 }
8522
8523 cfg80211_lock_rdev(rdev);
8524
8525 mutex_unlock(&cfg80211_mutex);
8526
8527 info->user_ptr[0] = rdev;
8528 }
8529
8530 return 0;
8531 }
8532
8533 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8534 struct genl_info *info)
8535 {
8536 if (info->user_ptr[0])
8537 cfg80211_unlock_rdev(info->user_ptr[0]);
8538 if (info->user_ptr[1]) {
8539 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8540 struct wireless_dev *wdev = info->user_ptr[1];
8541
8542 if (wdev->netdev)
8543 dev_put(wdev->netdev);
8544 } else {
8545 dev_put(info->user_ptr[1]);
8546 }
8547 }
8548 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8549 rtnl_unlock();
8550 }
8551
8552 static struct genl_ops nl80211_ops[] = {
8553 {
8554 .cmd = NL80211_CMD_GET_WIPHY,
8555 .doit = nl80211_get_wiphy,
8556 .dumpit = nl80211_dump_wiphy,
8557 .policy = nl80211_policy,
8558 /* can be retrieved by unprivileged users */
8559 .internal_flags = NL80211_FLAG_NEED_WIPHY,
8560 },
8561 {
8562 .cmd = NL80211_CMD_SET_WIPHY,
8563 .doit = nl80211_set_wiphy,
8564 .policy = nl80211_policy,
8565 .flags = GENL_ADMIN_PERM,
8566 .internal_flags = NL80211_FLAG_NEED_RTNL,
8567 },
8568 {
8569 .cmd = NL80211_CMD_GET_INTERFACE,
8570 .doit = nl80211_get_interface,
8571 .dumpit = nl80211_dump_interface,
8572 .policy = nl80211_policy,
8573 /* can be retrieved by unprivileged users */
8574 .internal_flags = NL80211_FLAG_NEED_WDEV,
8575 },
8576 {
8577 .cmd = NL80211_CMD_SET_INTERFACE,
8578 .doit = nl80211_set_interface,
8579 .policy = nl80211_policy,
8580 .flags = GENL_ADMIN_PERM,
8581 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8582 NL80211_FLAG_NEED_RTNL,
8583 },
8584 {
8585 .cmd = NL80211_CMD_NEW_INTERFACE,
8586 .doit = nl80211_new_interface,
8587 .policy = nl80211_policy,
8588 .flags = GENL_ADMIN_PERM,
8589 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8590 NL80211_FLAG_NEED_RTNL,
8591 },
8592 {
8593 .cmd = NL80211_CMD_DEL_INTERFACE,
8594 .doit = nl80211_del_interface,
8595 .policy = nl80211_policy,
8596 .flags = GENL_ADMIN_PERM,
8597 .internal_flags = NL80211_FLAG_NEED_WDEV |
8598 NL80211_FLAG_NEED_RTNL,
8599 },
8600 {
8601 .cmd = NL80211_CMD_GET_KEY,
8602 .doit = nl80211_get_key,
8603 .policy = nl80211_policy,
8604 .flags = GENL_ADMIN_PERM,
8605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8606 NL80211_FLAG_NEED_RTNL,
8607 },
8608 {
8609 .cmd = NL80211_CMD_SET_KEY,
8610 .doit = nl80211_set_key,
8611 .policy = nl80211_policy,
8612 .flags = GENL_ADMIN_PERM,
8613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8614 NL80211_FLAG_NEED_RTNL,
8615 },
8616 {
8617 .cmd = NL80211_CMD_NEW_KEY,
8618 .doit = nl80211_new_key,
8619 .policy = nl80211_policy,
8620 .flags = GENL_ADMIN_PERM,
8621 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8622 NL80211_FLAG_NEED_RTNL,
8623 },
8624 {
8625 .cmd = NL80211_CMD_DEL_KEY,
8626 .doit = nl80211_del_key,
8627 .policy = nl80211_policy,
8628 .flags = GENL_ADMIN_PERM,
8629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8630 NL80211_FLAG_NEED_RTNL,
8631 },
8632 {
8633 .cmd = NL80211_CMD_SET_BEACON,
8634 .policy = nl80211_policy,
8635 .flags = GENL_ADMIN_PERM,
8636 .doit = nl80211_set_beacon,
8637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8638 NL80211_FLAG_NEED_RTNL,
8639 },
8640 {
8641 .cmd = NL80211_CMD_START_AP,
8642 .policy = nl80211_policy,
8643 .flags = GENL_ADMIN_PERM,
8644 .doit = nl80211_start_ap,
8645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8646 NL80211_FLAG_NEED_RTNL,
8647 },
8648 {
8649 .cmd = NL80211_CMD_STOP_AP,
8650 .policy = nl80211_policy,
8651 .flags = GENL_ADMIN_PERM,
8652 .doit = nl80211_stop_ap,
8653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8654 NL80211_FLAG_NEED_RTNL,
8655 },
8656 {
8657 .cmd = NL80211_CMD_GET_STATION,
8658 .doit = nl80211_get_station,
8659 .dumpit = nl80211_dump_station,
8660 .policy = nl80211_policy,
8661 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8662 NL80211_FLAG_NEED_RTNL,
8663 },
8664 {
8665 .cmd = NL80211_CMD_SET_STATION,
8666 .doit = nl80211_set_station,
8667 .policy = nl80211_policy,
8668 .flags = GENL_ADMIN_PERM,
8669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8670 NL80211_FLAG_NEED_RTNL,
8671 },
8672 {
8673 .cmd = NL80211_CMD_NEW_STATION,
8674 .doit = nl80211_new_station,
8675 .policy = nl80211_policy,
8676 .flags = GENL_ADMIN_PERM,
8677 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8678 NL80211_FLAG_NEED_RTNL,
8679 },
8680 {
8681 .cmd = NL80211_CMD_DEL_STATION,
8682 .doit = nl80211_del_station,
8683 .policy = nl80211_policy,
8684 .flags = GENL_ADMIN_PERM,
8685 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8686 NL80211_FLAG_NEED_RTNL,
8687 },
8688 {
8689 .cmd = NL80211_CMD_GET_MPATH,
8690 .doit = nl80211_get_mpath,
8691 .dumpit = nl80211_dump_mpath,
8692 .policy = nl80211_policy,
8693 .flags = GENL_ADMIN_PERM,
8694 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8695 NL80211_FLAG_NEED_RTNL,
8696 },
8697 {
8698 .cmd = NL80211_CMD_SET_MPATH,
8699 .doit = nl80211_set_mpath,
8700 .policy = nl80211_policy,
8701 .flags = GENL_ADMIN_PERM,
8702 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8703 NL80211_FLAG_NEED_RTNL,
8704 },
8705 {
8706 .cmd = NL80211_CMD_NEW_MPATH,
8707 .doit = nl80211_new_mpath,
8708 .policy = nl80211_policy,
8709 .flags = GENL_ADMIN_PERM,
8710 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8711 NL80211_FLAG_NEED_RTNL,
8712 },
8713 {
8714 .cmd = NL80211_CMD_DEL_MPATH,
8715 .doit = nl80211_del_mpath,
8716 .policy = nl80211_policy,
8717 .flags = GENL_ADMIN_PERM,
8718 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8719 NL80211_FLAG_NEED_RTNL,
8720 },
8721 {
8722 .cmd = NL80211_CMD_SET_BSS,
8723 .doit = nl80211_set_bss,
8724 .policy = nl80211_policy,
8725 .flags = GENL_ADMIN_PERM,
8726 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8727 NL80211_FLAG_NEED_RTNL,
8728 },
8729 {
8730 .cmd = NL80211_CMD_GET_REG,
8731 .doit = nl80211_get_reg,
8732 .policy = nl80211_policy,
8733 /* can be retrieved by unprivileged users */
8734 },
8735 {
8736 .cmd = NL80211_CMD_SET_REG,
8737 .doit = nl80211_set_reg,
8738 .policy = nl80211_policy,
8739 .flags = GENL_ADMIN_PERM,
8740 },
8741 {
8742 .cmd = NL80211_CMD_REQ_SET_REG,
8743 .doit = nl80211_req_set_reg,
8744 .policy = nl80211_policy,
8745 .flags = GENL_ADMIN_PERM,
8746 },
8747 {
8748 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8749 .doit = nl80211_get_mesh_config,
8750 .policy = nl80211_policy,
8751 /* can be retrieved by unprivileged users */
8752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8753 NL80211_FLAG_NEED_RTNL,
8754 },
8755 {
8756 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8757 .doit = nl80211_update_mesh_config,
8758 .policy = nl80211_policy,
8759 .flags = GENL_ADMIN_PERM,
8760 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8761 NL80211_FLAG_NEED_RTNL,
8762 },
8763 {
8764 .cmd = NL80211_CMD_TRIGGER_SCAN,
8765 .doit = nl80211_trigger_scan,
8766 .policy = nl80211_policy,
8767 .flags = GENL_ADMIN_PERM,
8768 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8769 NL80211_FLAG_NEED_RTNL,
8770 },
8771 {
8772 .cmd = NL80211_CMD_GET_SCAN,
8773 .policy = nl80211_policy,
8774 .dumpit = nl80211_dump_scan,
8775 },
8776 {
8777 .cmd = NL80211_CMD_START_SCHED_SCAN,
8778 .doit = nl80211_start_sched_scan,
8779 .policy = nl80211_policy,
8780 .flags = GENL_ADMIN_PERM,
8781 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8782 NL80211_FLAG_NEED_RTNL,
8783 },
8784 {
8785 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8786 .doit = nl80211_stop_sched_scan,
8787 .policy = nl80211_policy,
8788 .flags = GENL_ADMIN_PERM,
8789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8790 NL80211_FLAG_NEED_RTNL,
8791 },
8792 {
8793 .cmd = NL80211_CMD_AUTHENTICATE,
8794 .doit = nl80211_authenticate,
8795 .policy = nl80211_policy,
8796 .flags = GENL_ADMIN_PERM,
8797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8798 NL80211_FLAG_NEED_RTNL,
8799 },
8800 {
8801 .cmd = NL80211_CMD_ASSOCIATE,
8802 .doit = nl80211_associate,
8803 .policy = nl80211_policy,
8804 .flags = GENL_ADMIN_PERM,
8805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8806 NL80211_FLAG_NEED_RTNL,
8807 },
8808 {
8809 .cmd = NL80211_CMD_DEAUTHENTICATE,
8810 .doit = nl80211_deauthenticate,
8811 .policy = nl80211_policy,
8812 .flags = GENL_ADMIN_PERM,
8813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8814 NL80211_FLAG_NEED_RTNL,
8815 },
8816 {
8817 .cmd = NL80211_CMD_DISASSOCIATE,
8818 .doit = nl80211_disassociate,
8819 .policy = nl80211_policy,
8820 .flags = GENL_ADMIN_PERM,
8821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8822 NL80211_FLAG_NEED_RTNL,
8823 },
8824 {
8825 .cmd = NL80211_CMD_JOIN_IBSS,
8826 .doit = nl80211_join_ibss,
8827 .policy = nl80211_policy,
8828 .flags = GENL_ADMIN_PERM,
8829 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8830 NL80211_FLAG_NEED_RTNL,
8831 },
8832 {
8833 .cmd = NL80211_CMD_LEAVE_IBSS,
8834 .doit = nl80211_leave_ibss,
8835 .policy = nl80211_policy,
8836 .flags = GENL_ADMIN_PERM,
8837 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8838 NL80211_FLAG_NEED_RTNL,
8839 },
8840 #ifdef CONFIG_NL80211_TESTMODE
8841 {
8842 .cmd = NL80211_CMD_TESTMODE,
8843 .doit = nl80211_testmode_do,
8844 .dumpit = nl80211_testmode_dump,
8845 .policy = nl80211_policy,
8846 .flags = GENL_ADMIN_PERM,
8847 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8848 NL80211_FLAG_NEED_RTNL,
8849 },
8850 #endif
8851 {
8852 .cmd = NL80211_CMD_CONNECT,
8853 .doit = nl80211_connect,
8854 .policy = nl80211_policy,
8855 .flags = GENL_ADMIN_PERM,
8856 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8857 NL80211_FLAG_NEED_RTNL,
8858 },
8859 {
8860 .cmd = NL80211_CMD_DISCONNECT,
8861 .doit = nl80211_disconnect,
8862 .policy = nl80211_policy,
8863 .flags = GENL_ADMIN_PERM,
8864 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8865 NL80211_FLAG_NEED_RTNL,
8866 },
8867 {
8868 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8869 .doit = nl80211_wiphy_netns,
8870 .policy = nl80211_policy,
8871 .flags = GENL_ADMIN_PERM,
8872 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8873 NL80211_FLAG_NEED_RTNL,
8874 },
8875 {
8876 .cmd = NL80211_CMD_GET_SURVEY,
8877 .policy = nl80211_policy,
8878 .dumpit = nl80211_dump_survey,
8879 },
8880 {
8881 .cmd = NL80211_CMD_SET_PMKSA,
8882 .doit = nl80211_setdel_pmksa,
8883 .policy = nl80211_policy,
8884 .flags = GENL_ADMIN_PERM,
8885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8886 NL80211_FLAG_NEED_RTNL,
8887 },
8888 {
8889 .cmd = NL80211_CMD_DEL_PMKSA,
8890 .doit = nl80211_setdel_pmksa,
8891 .policy = nl80211_policy,
8892 .flags = GENL_ADMIN_PERM,
8893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8894 NL80211_FLAG_NEED_RTNL,
8895 },
8896 {
8897 .cmd = NL80211_CMD_FLUSH_PMKSA,
8898 .doit = nl80211_flush_pmksa,
8899 .policy = nl80211_policy,
8900 .flags = GENL_ADMIN_PERM,
8901 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8902 NL80211_FLAG_NEED_RTNL,
8903 },
8904 {
8905 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8906 .doit = nl80211_remain_on_channel,
8907 .policy = nl80211_policy,
8908 .flags = GENL_ADMIN_PERM,
8909 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8910 NL80211_FLAG_NEED_RTNL,
8911 },
8912 {
8913 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8914 .doit = nl80211_cancel_remain_on_channel,
8915 .policy = nl80211_policy,
8916 .flags = GENL_ADMIN_PERM,
8917 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8918 NL80211_FLAG_NEED_RTNL,
8919 },
8920 {
8921 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8922 .doit = nl80211_set_tx_bitrate_mask,
8923 .policy = nl80211_policy,
8924 .flags = GENL_ADMIN_PERM,
8925 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8926 NL80211_FLAG_NEED_RTNL,
8927 },
8928 {
8929 .cmd = NL80211_CMD_REGISTER_FRAME,
8930 .doit = nl80211_register_mgmt,
8931 .policy = nl80211_policy,
8932 .flags = GENL_ADMIN_PERM,
8933 .internal_flags = NL80211_FLAG_NEED_WDEV |
8934 NL80211_FLAG_NEED_RTNL,
8935 },
8936 {
8937 .cmd = NL80211_CMD_FRAME,
8938 .doit = nl80211_tx_mgmt,
8939 .policy = nl80211_policy,
8940 .flags = GENL_ADMIN_PERM,
8941 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8942 NL80211_FLAG_NEED_RTNL,
8943 },
8944 {
8945 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8946 .doit = nl80211_tx_mgmt_cancel_wait,
8947 .policy = nl80211_policy,
8948 .flags = GENL_ADMIN_PERM,
8949 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8950 NL80211_FLAG_NEED_RTNL,
8951 },
8952 {
8953 .cmd = NL80211_CMD_SET_POWER_SAVE,
8954 .doit = nl80211_set_power_save,
8955 .policy = nl80211_policy,
8956 .flags = GENL_ADMIN_PERM,
8957 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8958 NL80211_FLAG_NEED_RTNL,
8959 },
8960 {
8961 .cmd = NL80211_CMD_GET_POWER_SAVE,
8962 .doit = nl80211_get_power_save,
8963 .policy = nl80211_policy,
8964 /* can be retrieved by unprivileged users */
8965 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8966 NL80211_FLAG_NEED_RTNL,
8967 },
8968 {
8969 .cmd = NL80211_CMD_SET_CQM,
8970 .doit = nl80211_set_cqm,
8971 .policy = nl80211_policy,
8972 .flags = GENL_ADMIN_PERM,
8973 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8974 NL80211_FLAG_NEED_RTNL,
8975 },
8976 {
8977 .cmd = NL80211_CMD_SET_CHANNEL,
8978 .doit = nl80211_set_channel,
8979 .policy = nl80211_policy,
8980 .flags = GENL_ADMIN_PERM,
8981 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8982 NL80211_FLAG_NEED_RTNL,
8983 },
8984 {
8985 .cmd = NL80211_CMD_SET_WDS_PEER,
8986 .doit = nl80211_set_wds_peer,
8987 .policy = nl80211_policy,
8988 .flags = GENL_ADMIN_PERM,
8989 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8990 NL80211_FLAG_NEED_RTNL,
8991 },
8992 {
8993 .cmd = NL80211_CMD_JOIN_MESH,
8994 .doit = nl80211_join_mesh,
8995 .policy = nl80211_policy,
8996 .flags = GENL_ADMIN_PERM,
8997 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8998 NL80211_FLAG_NEED_RTNL,
8999 },
9000 {
9001 .cmd = NL80211_CMD_LEAVE_MESH,
9002 .doit = nl80211_leave_mesh,
9003 .policy = nl80211_policy,
9004 .flags = GENL_ADMIN_PERM,
9005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9006 NL80211_FLAG_NEED_RTNL,
9007 },
9008 #ifdef CONFIG_PM
9009 {
9010 .cmd = NL80211_CMD_GET_WOWLAN,
9011 .doit = nl80211_get_wowlan,
9012 .policy = nl80211_policy,
9013 /* can be retrieved by unprivileged users */
9014 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9015 NL80211_FLAG_NEED_RTNL,
9016 },
9017 {
9018 .cmd = NL80211_CMD_SET_WOWLAN,
9019 .doit = nl80211_set_wowlan,
9020 .policy = nl80211_policy,
9021 .flags = GENL_ADMIN_PERM,
9022 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9023 NL80211_FLAG_NEED_RTNL,
9024 },
9025 #endif
9026 {
9027 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9028 .doit = nl80211_set_rekey_data,
9029 .policy = nl80211_policy,
9030 .flags = GENL_ADMIN_PERM,
9031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9032 NL80211_FLAG_NEED_RTNL,
9033 },
9034 {
9035 .cmd = NL80211_CMD_TDLS_MGMT,
9036 .doit = nl80211_tdls_mgmt,
9037 .policy = nl80211_policy,
9038 .flags = GENL_ADMIN_PERM,
9039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9040 NL80211_FLAG_NEED_RTNL,
9041 },
9042 {
9043 .cmd = NL80211_CMD_TDLS_OPER,
9044 .doit = nl80211_tdls_oper,
9045 .policy = nl80211_policy,
9046 .flags = GENL_ADMIN_PERM,
9047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9048 NL80211_FLAG_NEED_RTNL,
9049 },
9050 {
9051 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9052 .doit = nl80211_register_unexpected_frame,
9053 .policy = nl80211_policy,
9054 .flags = GENL_ADMIN_PERM,
9055 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9056 NL80211_FLAG_NEED_RTNL,
9057 },
9058 {
9059 .cmd = NL80211_CMD_PROBE_CLIENT,
9060 .doit = nl80211_probe_client,
9061 .policy = nl80211_policy,
9062 .flags = GENL_ADMIN_PERM,
9063 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9064 NL80211_FLAG_NEED_RTNL,
9065 },
9066 {
9067 .cmd = NL80211_CMD_REGISTER_BEACONS,
9068 .doit = nl80211_register_beacons,
9069 .policy = nl80211_policy,
9070 .flags = GENL_ADMIN_PERM,
9071 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9072 NL80211_FLAG_NEED_RTNL,
9073 },
9074 {
9075 .cmd = NL80211_CMD_SET_NOACK_MAP,
9076 .doit = nl80211_set_noack_map,
9077 .policy = nl80211_policy,
9078 .flags = GENL_ADMIN_PERM,
9079 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9080 NL80211_FLAG_NEED_RTNL,
9081 },
9082 {
9083 .cmd = NL80211_CMD_START_P2P_DEVICE,
9084 .doit = nl80211_start_p2p_device,
9085 .policy = nl80211_policy,
9086 .flags = GENL_ADMIN_PERM,
9087 .internal_flags = NL80211_FLAG_NEED_WDEV |
9088 NL80211_FLAG_NEED_RTNL,
9089 },
9090 {
9091 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9092 .doit = nl80211_stop_p2p_device,
9093 .policy = nl80211_policy,
9094 .flags = GENL_ADMIN_PERM,
9095 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9096 NL80211_FLAG_NEED_RTNL,
9097 },
9098 {
9099 .cmd = NL80211_CMD_SET_MCAST_RATE,
9100 .doit = nl80211_set_mcast_rate,
9101 .policy = nl80211_policy,
9102 .flags = GENL_ADMIN_PERM,
9103 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9104 NL80211_FLAG_NEED_RTNL,
9105 },
9106 {
9107 .cmd = NL80211_CMD_SET_MAC_ACL,
9108 .doit = nl80211_set_mac_acl,
9109 .policy = nl80211_policy,
9110 .flags = GENL_ADMIN_PERM,
9111 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9112 NL80211_FLAG_NEED_RTNL,
9113 },
9114 {
9115 .cmd = NL80211_CMD_RADAR_DETECT,
9116 .doit = nl80211_start_radar_detection,
9117 .policy = nl80211_policy,
9118 .flags = GENL_ADMIN_PERM,
9119 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9120 NL80211_FLAG_NEED_RTNL,
9121 },
9122 {
9123 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9124 .doit = nl80211_get_protocol_features,
9125 .policy = nl80211_policy,
9126 },
9127 {
9128 .cmd = NL80211_CMD_UPDATE_FT_IES,
9129 .doit = nl80211_update_ft_ies,
9130 .policy = nl80211_policy,
9131 .flags = GENL_ADMIN_PERM,
9132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9133 NL80211_FLAG_NEED_RTNL,
9134 },
9135 {
9136 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9137 .doit = nl80211_crit_protocol_start,
9138 .policy = nl80211_policy,
9139 .flags = GENL_ADMIN_PERM,
9140 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9141 NL80211_FLAG_NEED_RTNL,
9142 },
9143 {
9144 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9145 .doit = nl80211_crit_protocol_stop,
9146 .policy = nl80211_policy,
9147 .flags = GENL_ADMIN_PERM,
9148 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9149 NL80211_FLAG_NEED_RTNL,
9150 },
9151 {
9152 .cmd = NL80211_CMD_VENDOR,
9153 .doit = nl80211_vendor_cmd,
9154 .policy = nl80211_policy,
9155 .flags = GENL_ADMIN_PERM,
9156 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9157 NL80211_FLAG_NEED_RTNL,
9158 },
9159 };
9160
9161 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9162 .name = "mlme",
9163 };
9164
9165 /* multicast groups */
9166 static struct genl_multicast_group nl80211_config_mcgrp = {
9167 .name = "config",
9168 };
9169 static struct genl_multicast_group nl80211_scan_mcgrp = {
9170 .name = "scan",
9171 };
9172 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9173 .name = "regulatory",
9174 };
9175
9176 /* notification functions */
9177
9178 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9179 {
9180 struct sk_buff *msg;
9181
9182 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9183 if (!msg)
9184 return;
9185
9186 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
9187 false, NULL, NULL, NULL) < 0) {
9188 nlmsg_free(msg);
9189 return;
9190 }
9191
9192 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9193 nl80211_config_mcgrp.id, GFP_KERNEL);
9194 }
9195
9196 static int nl80211_add_scan_req(struct sk_buff *msg,
9197 struct cfg80211_registered_device *rdev)
9198 {
9199 struct cfg80211_scan_request *req = rdev->scan_req;
9200 struct nlattr *nest;
9201 int i;
9202
9203 lockdep_assert_held(&rdev->sched_scan_mtx);
9204
9205 if (WARN_ON(!req))
9206 return 0;
9207
9208 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9209 if (!nest)
9210 goto nla_put_failure;
9211 for (i = 0; i < req->n_ssids; i++) {
9212 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9213 goto nla_put_failure;
9214 }
9215 nla_nest_end(msg, nest);
9216
9217 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9218 if (!nest)
9219 goto nla_put_failure;
9220 for (i = 0; i < req->n_channels; i++) {
9221 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9222 goto nla_put_failure;
9223 }
9224 nla_nest_end(msg, nest);
9225
9226 if (req->ie &&
9227 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9228 goto nla_put_failure;
9229
9230 if (req->flags)
9231 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9232
9233 return 0;
9234 nla_put_failure:
9235 return -ENOBUFS;
9236 }
9237
9238 static int nl80211_send_scan_msg(struct sk_buff *msg,
9239 struct cfg80211_registered_device *rdev,
9240 struct wireless_dev *wdev,
9241 u32 portid, u32 seq, int flags,
9242 u32 cmd)
9243 {
9244 void *hdr;
9245
9246 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9247 if (!hdr)
9248 return -1;
9249
9250 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9251 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9252 wdev->netdev->ifindex)) ||
9253 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9254 goto nla_put_failure;
9255
9256 /* ignore errors and send incomplete event anyway */
9257 nl80211_add_scan_req(msg, rdev);
9258
9259 return genlmsg_end(msg, hdr);
9260
9261 nla_put_failure:
9262 genlmsg_cancel(msg, hdr);
9263 return -EMSGSIZE;
9264 }
9265
9266 static int
9267 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9268 struct cfg80211_registered_device *rdev,
9269 struct net_device *netdev,
9270 u32 portid, u32 seq, int flags, u32 cmd)
9271 {
9272 void *hdr;
9273
9274 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9275 if (!hdr)
9276 return -1;
9277
9278 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9279 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9280 goto nla_put_failure;
9281
9282 return genlmsg_end(msg, hdr);
9283
9284 nla_put_failure:
9285 genlmsg_cancel(msg, hdr);
9286 return -EMSGSIZE;
9287 }
9288
9289 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9290 struct wireless_dev *wdev)
9291 {
9292 struct sk_buff *msg;
9293
9294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9295 if (!msg)
9296 return;
9297
9298 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9299 NL80211_CMD_TRIGGER_SCAN) < 0) {
9300 nlmsg_free(msg);
9301 return;
9302 }
9303
9304 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9305 nl80211_scan_mcgrp.id, GFP_KERNEL);
9306 }
9307
9308 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9309 struct wireless_dev *wdev)
9310 {
9311 struct sk_buff *msg;
9312
9313 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9314 if (!msg)
9315 return;
9316
9317 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9318 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9319 nlmsg_free(msg);
9320 return;
9321 }
9322
9323 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9324 nl80211_scan_mcgrp.id, GFP_KERNEL);
9325 }
9326
9327 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9328 struct wireless_dev *wdev)
9329 {
9330 struct sk_buff *msg;
9331
9332 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9333 if (!msg)
9334 return;
9335
9336 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9337 NL80211_CMD_SCAN_ABORTED) < 0) {
9338 nlmsg_free(msg);
9339 return;
9340 }
9341
9342 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9343 nl80211_scan_mcgrp.id, GFP_KERNEL);
9344 }
9345
9346 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9347 struct net_device *netdev)
9348 {
9349 struct sk_buff *msg;
9350
9351 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9352 if (!msg)
9353 return;
9354
9355 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9356 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9357 nlmsg_free(msg);
9358 return;
9359 }
9360
9361 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9362 nl80211_scan_mcgrp.id, GFP_KERNEL);
9363 }
9364
9365 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9366 struct net_device *netdev, u32 cmd)
9367 {
9368 struct sk_buff *msg;
9369
9370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9371 if (!msg)
9372 return;
9373
9374 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 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 /*
9384 * This can happen on global regulatory changes or device specific settings
9385 * based on custom world regulatory domains.
9386 */
9387 void nl80211_send_reg_change_event(struct regulatory_request *request)
9388 {
9389 struct sk_buff *msg;
9390 void *hdr;
9391
9392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9393 if (!msg)
9394 return;
9395
9396 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9397 if (!hdr) {
9398 nlmsg_free(msg);
9399 return;
9400 }
9401
9402 /* Userspace can always count this one always being set */
9403 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9404 goto nla_put_failure;
9405
9406 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9407 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9408 NL80211_REGDOM_TYPE_WORLD))
9409 goto nla_put_failure;
9410 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9411 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9412 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9413 goto nla_put_failure;
9414 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9415 request->intersect) {
9416 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9417 NL80211_REGDOM_TYPE_INTERSECTION))
9418 goto nla_put_failure;
9419 } else {
9420 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9421 NL80211_REGDOM_TYPE_COUNTRY) ||
9422 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9423 request->alpha2))
9424 goto nla_put_failure;
9425 }
9426
9427 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9428 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9429 goto nla_put_failure;
9430
9431 genlmsg_end(msg, hdr);
9432
9433 rcu_read_lock();
9434 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9435 GFP_ATOMIC);
9436 rcu_read_unlock();
9437
9438 return;
9439
9440 nla_put_failure:
9441 genlmsg_cancel(msg, hdr);
9442 nlmsg_free(msg);
9443 }
9444
9445 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9446 struct net_device *netdev,
9447 const u8 *buf, size_t len,
9448 enum nl80211_commands cmd, gfp_t gfp)
9449 {
9450 struct sk_buff *msg;
9451 void *hdr;
9452
9453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9454 if (!msg)
9455 return;
9456
9457 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9458 if (!hdr) {
9459 nlmsg_free(msg);
9460 return;
9461 }
9462
9463 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9464 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9465 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9466 goto nla_put_failure;
9467
9468 genlmsg_end(msg, hdr);
9469
9470 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9471 nl80211_mlme_mcgrp.id, gfp);
9472 return;
9473
9474 nla_put_failure:
9475 genlmsg_cancel(msg, hdr);
9476 nlmsg_free(msg);
9477 }
9478
9479 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9480 struct net_device *netdev, const u8 *buf,
9481 size_t len, gfp_t gfp)
9482 {
9483 nl80211_send_mlme_event(rdev, netdev, buf, len,
9484 NL80211_CMD_AUTHENTICATE, gfp);
9485 }
9486
9487 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9488 struct net_device *netdev, const u8 *buf,
9489 size_t len, gfp_t gfp)
9490 {
9491 nl80211_send_mlme_event(rdev, netdev, buf, len,
9492 NL80211_CMD_ASSOCIATE, gfp);
9493 }
9494
9495 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9496 struct net_device *netdev, const u8 *buf,
9497 size_t len, gfp_t gfp)
9498 {
9499 nl80211_send_mlme_event(rdev, netdev, buf, len,
9500 NL80211_CMD_DEAUTHENTICATE, gfp);
9501 }
9502
9503 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9504 struct net_device *netdev, const u8 *buf,
9505 size_t len, gfp_t gfp)
9506 {
9507 nl80211_send_mlme_event(rdev, netdev, buf, len,
9508 NL80211_CMD_DISASSOCIATE, gfp);
9509 }
9510
9511 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9512 size_t len)
9513 {
9514 struct wireless_dev *wdev = dev->ieee80211_ptr;
9515 struct wiphy *wiphy = wdev->wiphy;
9516 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9517
9518 trace_cfg80211_send_unprot_deauth(dev);
9519 nl80211_send_mlme_event(rdev, dev, buf, len,
9520 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9521 }
9522 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9523
9524 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9525 size_t len)
9526 {
9527 struct wireless_dev *wdev = dev->ieee80211_ptr;
9528 struct wiphy *wiphy = wdev->wiphy;
9529 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9530
9531 trace_cfg80211_send_unprot_disassoc(dev);
9532 nl80211_send_mlme_event(rdev, dev, buf, len,
9533 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9534 }
9535 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9536
9537 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9538 struct net_device *netdev, int cmd,
9539 const u8 *addr, gfp_t gfp)
9540 {
9541 struct sk_buff *msg;
9542 void *hdr;
9543
9544 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9545 if (!msg)
9546 return;
9547
9548 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9549 if (!hdr) {
9550 nlmsg_free(msg);
9551 return;
9552 }
9553
9554 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9555 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9556 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9558 goto nla_put_failure;
9559
9560 genlmsg_end(msg, hdr);
9561
9562 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9563 nl80211_mlme_mcgrp.id, gfp);
9564 return;
9565
9566 nla_put_failure:
9567 genlmsg_cancel(msg, hdr);
9568 nlmsg_free(msg);
9569 }
9570
9571 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9572 struct net_device *netdev, const u8 *addr,
9573 gfp_t gfp)
9574 {
9575 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9576 addr, gfp);
9577 }
9578
9579 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9580 struct net_device *netdev, const u8 *addr,
9581 gfp_t gfp)
9582 {
9583 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9584 addr, gfp);
9585 }
9586
9587 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9588 struct net_device *netdev, const u8 *bssid,
9589 const u8 *req_ie, size_t req_ie_len,
9590 const u8 *resp_ie, size_t resp_ie_len,
9591 u16 status, gfp_t gfp)
9592 {
9593 struct sk_buff *msg;
9594 void *hdr;
9595
9596 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9597 if (!msg)
9598 return;
9599
9600 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9601 if (!hdr) {
9602 nlmsg_free(msg);
9603 return;
9604 }
9605
9606 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9607 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9608 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9609 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9610 (req_ie &&
9611 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9612 (resp_ie &&
9613 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9614 goto nla_put_failure;
9615
9616 genlmsg_end(msg, hdr);
9617
9618 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9619 nl80211_mlme_mcgrp.id, gfp);
9620 return;
9621
9622 nla_put_failure:
9623 genlmsg_cancel(msg, hdr);
9624 nlmsg_free(msg);
9625
9626 }
9627
9628 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9629 struct net_device *netdev, const u8 *bssid,
9630 const u8 *req_ie, size_t req_ie_len,
9631 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9632 {
9633 struct sk_buff *msg;
9634 void *hdr;
9635
9636 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9637 if (!msg)
9638 return;
9639
9640 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9641 if (!hdr) {
9642 nlmsg_free(msg);
9643 return;
9644 }
9645
9646 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9647 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9648 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9649 (req_ie &&
9650 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9651 (resp_ie &&
9652 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9653 goto nla_put_failure;
9654
9655 genlmsg_end(msg, hdr);
9656
9657 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9658 nl80211_mlme_mcgrp.id, gfp);
9659 return;
9660
9661 nla_put_failure:
9662 genlmsg_cancel(msg, hdr);
9663 nlmsg_free(msg);
9664
9665 }
9666
9667 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9668 struct net_device *netdev, u16 reason,
9669 const u8 *ie, size_t ie_len, bool from_ap)
9670 {
9671 struct sk_buff *msg;
9672 void *hdr;
9673
9674 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9675 if (!msg)
9676 return;
9677
9678 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9679 if (!hdr) {
9680 nlmsg_free(msg);
9681 return;
9682 }
9683
9684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9685 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9686 (from_ap && reason &&
9687 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9688 (from_ap &&
9689 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9690 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9691 goto nla_put_failure;
9692
9693 genlmsg_end(msg, hdr);
9694
9695 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9696 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9697 return;
9698
9699 nla_put_failure:
9700 genlmsg_cancel(msg, hdr);
9701 nlmsg_free(msg);
9702
9703 }
9704
9705 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9706 struct net_device *netdev, const u8 *bssid,
9707 gfp_t gfp)
9708 {
9709 struct sk_buff *msg;
9710 void *hdr;
9711
9712 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9713 if (!msg)
9714 return;
9715
9716 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9717 if (!hdr) {
9718 nlmsg_free(msg);
9719 return;
9720 }
9721
9722 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9723 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9724 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9725 goto nla_put_failure;
9726
9727 genlmsg_end(msg, hdr);
9728
9729 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9730 nl80211_mlme_mcgrp.id, gfp);
9731 return;
9732
9733 nla_put_failure:
9734 genlmsg_cancel(msg, hdr);
9735 nlmsg_free(msg);
9736 }
9737
9738 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9739 const u8* ie, u8 ie_len, gfp_t gfp)
9740 {
9741 struct wireless_dev *wdev = dev->ieee80211_ptr;
9742 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9743 struct sk_buff *msg;
9744 void *hdr;
9745
9746 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9747 return;
9748
9749 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9750
9751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9752 if (!msg)
9753 return;
9754
9755 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9756 if (!hdr) {
9757 nlmsg_free(msg);
9758 return;
9759 }
9760
9761 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9762 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9763 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9764 (ie_len && ie &&
9765 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9766 goto nla_put_failure;
9767
9768 genlmsg_end(msg, hdr);
9769
9770 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9771 nl80211_mlme_mcgrp.id, gfp);
9772 return;
9773
9774 nla_put_failure:
9775 genlmsg_cancel(msg, hdr);
9776 nlmsg_free(msg);
9777 }
9778 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9779
9780 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9781 struct net_device *netdev, const u8 *addr,
9782 enum nl80211_key_type key_type, int key_id,
9783 const u8 *tsc, gfp_t gfp)
9784 {
9785 struct sk_buff *msg;
9786 void *hdr;
9787
9788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9789 if (!msg)
9790 return;
9791
9792 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9793 if (!hdr) {
9794 nlmsg_free(msg);
9795 return;
9796 }
9797
9798 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9799 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9800 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9801 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9802 (key_id != -1 &&
9803 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9804 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9805 goto nla_put_failure;
9806
9807 genlmsg_end(msg, hdr);
9808
9809 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9810 nl80211_mlme_mcgrp.id, gfp);
9811 return;
9812
9813 nla_put_failure:
9814 genlmsg_cancel(msg, hdr);
9815 nlmsg_free(msg);
9816 }
9817
9818 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9819 struct ieee80211_channel *channel_before,
9820 struct ieee80211_channel *channel_after)
9821 {
9822 struct sk_buff *msg;
9823 void *hdr;
9824 struct nlattr *nl_freq;
9825
9826 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9827 if (!msg)
9828 return;
9829
9830 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9831 if (!hdr) {
9832 nlmsg_free(msg);
9833 return;
9834 }
9835
9836 /*
9837 * Since we are applying the beacon hint to a wiphy we know its
9838 * wiphy_idx is valid
9839 */
9840 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9841 goto nla_put_failure;
9842
9843 /* Before */
9844 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9845 if (!nl_freq)
9846 goto nla_put_failure;
9847 if (nl80211_msg_put_channel(msg, channel_before, false))
9848 goto nla_put_failure;
9849 nla_nest_end(msg, nl_freq);
9850
9851 /* After */
9852 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9853 if (!nl_freq)
9854 goto nla_put_failure;
9855 if (nl80211_msg_put_channel(msg, channel_after, false))
9856 goto nla_put_failure;
9857 nla_nest_end(msg, nl_freq);
9858
9859 genlmsg_end(msg, hdr);
9860
9861 rcu_read_lock();
9862 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9863 GFP_ATOMIC);
9864 rcu_read_unlock();
9865
9866 return;
9867
9868 nla_put_failure:
9869 genlmsg_cancel(msg, hdr);
9870 nlmsg_free(msg);
9871 }
9872
9873 static void nl80211_send_remain_on_chan_event(
9874 int cmd, struct cfg80211_registered_device *rdev,
9875 struct wireless_dev *wdev, u64 cookie,
9876 struct ieee80211_channel *chan,
9877 unsigned int duration, gfp_t gfp)
9878 {
9879 struct sk_buff *msg;
9880 void *hdr;
9881
9882 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9883 if (!msg)
9884 return;
9885
9886 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9887 if (!hdr) {
9888 nlmsg_free(msg);
9889 return;
9890 }
9891
9892 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9893 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9894 wdev->netdev->ifindex)) ||
9895 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9896 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9897 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9898 NL80211_CHAN_NO_HT) ||
9899 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9900 goto nla_put_failure;
9901
9902 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9903 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9904 goto nla_put_failure;
9905
9906 genlmsg_end(msg, hdr);
9907
9908 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9909 nl80211_mlme_mcgrp.id, gfp);
9910 return;
9911
9912 nla_put_failure:
9913 genlmsg_cancel(msg, hdr);
9914 nlmsg_free(msg);
9915 }
9916
9917 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9918 struct ieee80211_channel *chan,
9919 unsigned int duration, gfp_t gfp)
9920 {
9921 struct wiphy *wiphy = wdev->wiphy;
9922 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9923
9924 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9925 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9926 rdev, wdev, cookie, chan,
9927 duration, gfp);
9928 }
9929 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9930
9931 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9932 struct ieee80211_channel *chan,
9933 gfp_t gfp)
9934 {
9935 struct wiphy *wiphy = wdev->wiphy;
9936 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9937
9938 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9939 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9940 rdev, wdev, cookie, chan, 0, gfp);
9941 }
9942 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9943
9944 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9945 struct station_info *sinfo, gfp_t gfp)
9946 {
9947 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9948 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9949 struct sk_buff *msg;
9950
9951 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9952
9953 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9954 if (!msg)
9955 return;
9956
9957 if (nl80211_send_station(msg, 0, 0, 0,
9958 rdev, dev, mac_addr, sinfo) < 0) {
9959 nlmsg_free(msg);
9960 return;
9961 }
9962
9963 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9964 nl80211_mlme_mcgrp.id, gfp);
9965 }
9966 EXPORT_SYMBOL(cfg80211_new_sta);
9967
9968 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9969 {
9970 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9971 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9972 struct sk_buff *msg;
9973 void *hdr;
9974
9975 trace_cfg80211_del_sta(dev, mac_addr);
9976
9977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9978 if (!msg)
9979 return;
9980
9981 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9982 if (!hdr) {
9983 nlmsg_free(msg);
9984 return;
9985 }
9986
9987 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9988 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9989 goto nla_put_failure;
9990
9991 genlmsg_end(msg, hdr);
9992
9993 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9994 nl80211_mlme_mcgrp.id, gfp);
9995 return;
9996
9997 nla_put_failure:
9998 genlmsg_cancel(msg, hdr);
9999 nlmsg_free(msg);
10000 }
10001 EXPORT_SYMBOL(cfg80211_del_sta);
10002
10003 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10004 enum nl80211_connect_failed_reason reason,
10005 gfp_t gfp)
10006 {
10007 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10008 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10009 struct sk_buff *msg;
10010 void *hdr;
10011
10012 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10013 if (!msg)
10014 return;
10015
10016 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10017 if (!hdr) {
10018 nlmsg_free(msg);
10019 return;
10020 }
10021
10022 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10023 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10024 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10025 goto nla_put_failure;
10026
10027 genlmsg_end(msg, hdr);
10028
10029 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10030 nl80211_mlme_mcgrp.id, gfp);
10031 return;
10032
10033 nla_put_failure:
10034 genlmsg_cancel(msg, hdr);
10035 nlmsg_free(msg);
10036 }
10037 EXPORT_SYMBOL(cfg80211_conn_failed);
10038
10039 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10040 const u8 *addr, gfp_t gfp)
10041 {
10042 struct wireless_dev *wdev = dev->ieee80211_ptr;
10043 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10044 struct sk_buff *msg;
10045 void *hdr;
10046 int err;
10047 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10048
10049 if (!nlportid)
10050 return false;
10051
10052 msg = nlmsg_new(100, gfp);
10053 if (!msg)
10054 return true;
10055
10056 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10057 if (!hdr) {
10058 nlmsg_free(msg);
10059 return true;
10060 }
10061
10062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10063 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10064 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10065 goto nla_put_failure;
10066
10067 err = genlmsg_end(msg, hdr);
10068 if (err < 0) {
10069 nlmsg_free(msg);
10070 return true;
10071 }
10072
10073 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10074 return true;
10075
10076 nla_put_failure:
10077 genlmsg_cancel(msg, hdr);
10078 nlmsg_free(msg);
10079 return true;
10080 }
10081
10082 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10083 const u8 *addr, gfp_t gfp)
10084 {
10085 struct wireless_dev *wdev = dev->ieee80211_ptr;
10086 bool ret;
10087
10088 trace_cfg80211_rx_spurious_frame(dev, addr);
10089
10090 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10091 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10092 trace_cfg80211_return_bool(false);
10093 return false;
10094 }
10095 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10096 addr, gfp);
10097 trace_cfg80211_return_bool(ret);
10098 return ret;
10099 }
10100 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10101
10102 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10103 const u8 *addr, gfp_t gfp)
10104 {
10105 struct wireless_dev *wdev = dev->ieee80211_ptr;
10106 bool ret;
10107
10108 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10109
10110 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10111 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10112 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10113 trace_cfg80211_return_bool(false);
10114 return false;
10115 }
10116 ret = __nl80211_unexpected_frame(dev,
10117 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10118 addr, gfp);
10119 trace_cfg80211_return_bool(ret);
10120 return ret;
10121 }
10122 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10123
10124 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10125 struct wireless_dev *wdev, u32 nlportid,
10126 int freq, int sig_dbm,
10127 const u8 *buf, size_t len, gfp_t gfp)
10128 {
10129 struct net_device *netdev = wdev->netdev;
10130 struct sk_buff *msg;
10131 void *hdr;
10132
10133 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10134 if (!msg)
10135 return -ENOMEM;
10136
10137 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10138 if (!hdr) {
10139 nlmsg_free(msg);
10140 return -ENOMEM;
10141 }
10142
10143 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10144 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10145 netdev->ifindex)) ||
10146 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10147 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10148 (sig_dbm &&
10149 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10150 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10151 goto nla_put_failure;
10152
10153 genlmsg_end(msg, hdr);
10154
10155 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10156
10157 nla_put_failure:
10158 genlmsg_cancel(msg, hdr);
10159 nlmsg_free(msg);
10160 return -ENOBUFS;
10161 }
10162
10163 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10164 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10165 {
10166 struct wiphy *wiphy = wdev->wiphy;
10167 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10168 struct net_device *netdev = wdev->netdev;
10169 struct sk_buff *msg;
10170 void *hdr;
10171
10172 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10173
10174 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10175 if (!msg)
10176 return;
10177
10178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10179 if (!hdr) {
10180 nlmsg_free(msg);
10181 return;
10182 }
10183
10184 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10185 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10186 netdev->ifindex)) ||
10187 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10188 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10189 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10190 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10191 goto nla_put_failure;
10192
10193 genlmsg_end(msg, hdr);
10194
10195 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10196 nl80211_mlme_mcgrp.id, gfp);
10197 return;
10198
10199 nla_put_failure:
10200 genlmsg_cancel(msg, hdr);
10201 nlmsg_free(msg);
10202 }
10203 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10204
10205 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10206 enum nl80211_cqm_rssi_threshold_event rssi_event,
10207 gfp_t gfp)
10208 {
10209 struct wireless_dev *wdev = dev->ieee80211_ptr;
10210 struct wiphy *wiphy = wdev->wiphy;
10211 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10212 struct sk_buff *msg;
10213 struct nlattr *pinfoattr;
10214 void *hdr;
10215
10216 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10217
10218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10219 if (!msg)
10220 return;
10221
10222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10223 if (!hdr) {
10224 nlmsg_free(msg);
10225 return;
10226 }
10227
10228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10229 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10230 goto nla_put_failure;
10231
10232 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10233 if (!pinfoattr)
10234 goto nla_put_failure;
10235
10236 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10237 rssi_event))
10238 goto nla_put_failure;
10239
10240 nla_nest_end(msg, pinfoattr);
10241
10242 genlmsg_end(msg, hdr);
10243
10244 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10245 nl80211_mlme_mcgrp.id, gfp);
10246 return;
10247
10248 nla_put_failure:
10249 genlmsg_cancel(msg, hdr);
10250 nlmsg_free(msg);
10251 }
10252 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10253
10254 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10255 struct net_device *netdev, const u8 *bssid,
10256 const u8 *replay_ctr, gfp_t gfp)
10257 {
10258 struct sk_buff *msg;
10259 struct nlattr *rekey_attr;
10260 void *hdr;
10261
10262 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10263 if (!msg)
10264 return;
10265
10266 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10267 if (!hdr) {
10268 nlmsg_free(msg);
10269 return;
10270 }
10271
10272 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10273 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10274 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10275 goto nla_put_failure;
10276
10277 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10278 if (!rekey_attr)
10279 goto nla_put_failure;
10280
10281 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10282 NL80211_REPLAY_CTR_LEN, replay_ctr))
10283 goto nla_put_failure;
10284
10285 nla_nest_end(msg, rekey_attr);
10286
10287 genlmsg_end(msg, hdr);
10288
10289 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10290 nl80211_mlme_mcgrp.id, gfp);
10291 return;
10292
10293 nla_put_failure:
10294 genlmsg_cancel(msg, hdr);
10295 nlmsg_free(msg);
10296 }
10297
10298 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10299 const u8 *replay_ctr, gfp_t gfp)
10300 {
10301 struct wireless_dev *wdev = dev->ieee80211_ptr;
10302 struct wiphy *wiphy = wdev->wiphy;
10303 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10304
10305 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10306 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10307 }
10308 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10309
10310 static void
10311 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10312 struct net_device *netdev, int index,
10313 const u8 *bssid, bool preauth, gfp_t gfp)
10314 {
10315 struct sk_buff *msg;
10316 struct nlattr *attr;
10317 void *hdr;
10318
10319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10320 if (!msg)
10321 return;
10322
10323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10324 if (!hdr) {
10325 nlmsg_free(msg);
10326 return;
10327 }
10328
10329 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10330 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10331 goto nla_put_failure;
10332
10333 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10334 if (!attr)
10335 goto nla_put_failure;
10336
10337 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10338 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10339 (preauth &&
10340 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10341 goto nla_put_failure;
10342
10343 nla_nest_end(msg, attr);
10344
10345 genlmsg_end(msg, hdr);
10346
10347 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10348 nl80211_mlme_mcgrp.id, gfp);
10349 return;
10350
10351 nla_put_failure:
10352 genlmsg_cancel(msg, hdr);
10353 nlmsg_free(msg);
10354 }
10355
10356 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10357 const u8 *bssid, bool preauth, gfp_t gfp)
10358 {
10359 struct wireless_dev *wdev = dev->ieee80211_ptr;
10360 struct wiphy *wiphy = wdev->wiphy;
10361 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10362
10363 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10364 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10365 }
10366 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10367
10368 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10369 struct net_device *netdev,
10370 struct cfg80211_chan_def *chandef,
10371 gfp_t gfp)
10372 {
10373 struct sk_buff *msg;
10374 void *hdr;
10375
10376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10377 if (!msg)
10378 return;
10379
10380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10381 if (!hdr) {
10382 nlmsg_free(msg);
10383 return;
10384 }
10385
10386 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10387 goto nla_put_failure;
10388
10389 if (nl80211_send_chandef(msg, chandef))
10390 goto nla_put_failure;
10391
10392 genlmsg_end(msg, hdr);
10393
10394 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10395 nl80211_mlme_mcgrp.id, gfp);
10396 return;
10397
10398 nla_put_failure:
10399 genlmsg_cancel(msg, hdr);
10400 nlmsg_free(msg);
10401 }
10402
10403 void cfg80211_ch_switch_notify(struct net_device *dev,
10404 struct cfg80211_chan_def *chandef)
10405 {
10406 struct wireless_dev *wdev = dev->ieee80211_ptr;
10407 struct wiphy *wiphy = wdev->wiphy;
10408 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10409
10410 trace_cfg80211_ch_switch_notify(dev, chandef);
10411
10412 wdev_lock(wdev);
10413
10414 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10415 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10416 goto out;
10417
10418 wdev->channel = chandef->chan;
10419 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10420 out:
10421 wdev_unlock(wdev);
10422 return;
10423 }
10424 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10425
10426 void cfg80211_cqm_txe_notify(struct net_device *dev,
10427 const u8 *peer, u32 num_packets,
10428 u32 rate, u32 intvl, gfp_t gfp)
10429 {
10430 struct wireless_dev *wdev = dev->ieee80211_ptr;
10431 struct wiphy *wiphy = wdev->wiphy;
10432 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10433 struct sk_buff *msg;
10434 struct nlattr *pinfoattr;
10435 void *hdr;
10436
10437 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10438 if (!msg)
10439 return;
10440
10441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10442 if (!hdr) {
10443 nlmsg_free(msg);
10444 return;
10445 }
10446
10447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10448 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10450 goto nla_put_failure;
10451
10452 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10453 if (!pinfoattr)
10454 goto nla_put_failure;
10455
10456 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10457 goto nla_put_failure;
10458
10459 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10460 goto nla_put_failure;
10461
10462 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10463 goto nla_put_failure;
10464
10465 nla_nest_end(msg, pinfoattr);
10466
10467 genlmsg_end(msg, hdr);
10468
10469 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10470 nl80211_mlme_mcgrp.id, gfp);
10471 return;
10472
10473 nla_put_failure:
10474 genlmsg_cancel(msg, hdr);
10475 nlmsg_free(msg);
10476 }
10477 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10478
10479 void
10480 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10481 struct cfg80211_chan_def *chandef,
10482 enum nl80211_radar_event event,
10483 struct net_device *netdev, gfp_t gfp)
10484 {
10485 struct sk_buff *msg;
10486 void *hdr;
10487
10488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10489 if (!msg)
10490 return;
10491
10492 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10493 if (!hdr) {
10494 nlmsg_free(msg);
10495 return;
10496 }
10497
10498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10499 goto nla_put_failure;
10500
10501 /* NOP and radar events don't need a netdev parameter */
10502 if (netdev) {
10503 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10504
10505 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10506 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10507 goto nla_put_failure;
10508 }
10509
10510 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10511 goto nla_put_failure;
10512
10513 if (nl80211_send_chandef(msg, chandef))
10514 goto nla_put_failure;
10515
10516 if (genlmsg_end(msg, hdr) < 0) {
10517 nlmsg_free(msg);
10518 return;
10519 }
10520
10521 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10522 nl80211_mlme_mcgrp.id, gfp);
10523 return;
10524
10525 nla_put_failure:
10526 genlmsg_cancel(msg, hdr);
10527 nlmsg_free(msg);
10528 }
10529
10530 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10531 const u8 *peer, u32 num_packets, gfp_t gfp)
10532 {
10533 struct wireless_dev *wdev = dev->ieee80211_ptr;
10534 struct wiphy *wiphy = wdev->wiphy;
10535 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10536 struct sk_buff *msg;
10537 struct nlattr *pinfoattr;
10538 void *hdr;
10539
10540 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10541
10542 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10543 if (!msg)
10544 return;
10545
10546 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10547 if (!hdr) {
10548 nlmsg_free(msg);
10549 return;
10550 }
10551
10552 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10553 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10554 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10555 goto nla_put_failure;
10556
10557 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10558 if (!pinfoattr)
10559 goto nla_put_failure;
10560
10561 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10562 goto nla_put_failure;
10563
10564 nla_nest_end(msg, pinfoattr);
10565
10566 genlmsg_end(msg, hdr);
10567
10568 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10569 nl80211_mlme_mcgrp.id, gfp);
10570 return;
10571
10572 nla_put_failure:
10573 genlmsg_cancel(msg, hdr);
10574 nlmsg_free(msg);
10575 }
10576 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10577
10578 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10579 u64 cookie, bool acked, gfp_t gfp)
10580 {
10581 struct wireless_dev *wdev = dev->ieee80211_ptr;
10582 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10583 struct sk_buff *msg;
10584 void *hdr;
10585 int err;
10586
10587 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10588
10589 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10590
10591 if (!msg)
10592 return;
10593
10594 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10595 if (!hdr) {
10596 nlmsg_free(msg);
10597 return;
10598 }
10599
10600 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10601 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10603 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10604 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10605 goto nla_put_failure;
10606
10607 err = genlmsg_end(msg, hdr);
10608 if (err < 0) {
10609 nlmsg_free(msg);
10610 return;
10611 }
10612
10613 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10614 nl80211_mlme_mcgrp.id, gfp);
10615 return;
10616
10617 nla_put_failure:
10618 genlmsg_cancel(msg, hdr);
10619 nlmsg_free(msg);
10620 }
10621 EXPORT_SYMBOL(cfg80211_probe_status);
10622
10623 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10624 const u8 *frame, size_t len,
10625 int freq, int sig_dbm)
10626 {
10627 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10628 struct sk_buff *msg;
10629 void *hdr;
10630 struct cfg80211_beacon_registration *reg;
10631
10632 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10633
10634 spin_lock_bh(&rdev->beacon_registrations_lock);
10635 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10636 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10637 if (!msg) {
10638 spin_unlock_bh(&rdev->beacon_registrations_lock);
10639 return;
10640 }
10641
10642 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10643 if (!hdr)
10644 goto nla_put_failure;
10645
10646 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10647 (freq &&
10648 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10649 (sig_dbm &&
10650 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10651 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10652 goto nla_put_failure;
10653
10654 genlmsg_end(msg, hdr);
10655
10656 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10657 }
10658 spin_unlock_bh(&rdev->beacon_registrations_lock);
10659 return;
10660
10661 nla_put_failure:
10662 spin_unlock_bh(&rdev->beacon_registrations_lock);
10663 if (hdr)
10664 genlmsg_cancel(msg, hdr);
10665 nlmsg_free(msg);
10666 }
10667 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10668
10669 #ifdef CONFIG_PM
10670 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10671 struct cfg80211_wowlan_wakeup *wakeup,
10672 gfp_t gfp)
10673 {
10674 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10675 struct sk_buff *msg;
10676 void *hdr;
10677 int err, size = 200;
10678
10679 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10680
10681 if (wakeup)
10682 size += wakeup->packet_present_len;
10683
10684 msg = nlmsg_new(size, gfp);
10685 if (!msg)
10686 return;
10687
10688 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10689 if (!hdr)
10690 goto free_msg;
10691
10692 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10693 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10694 goto free_msg;
10695
10696 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10697 wdev->netdev->ifindex))
10698 goto free_msg;
10699
10700 if (wakeup) {
10701 struct nlattr *reasons;
10702
10703 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10704
10705 if (wakeup->disconnect &&
10706 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10707 goto free_msg;
10708 if (wakeup->magic_pkt &&
10709 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10710 goto free_msg;
10711 if (wakeup->gtk_rekey_failure &&
10712 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10713 goto free_msg;
10714 if (wakeup->eap_identity_req &&
10715 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10716 goto free_msg;
10717 if (wakeup->four_way_handshake &&
10718 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10719 goto free_msg;
10720 if (wakeup->rfkill_release &&
10721 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10722 goto free_msg;
10723
10724 if (wakeup->pattern_idx >= 0 &&
10725 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10726 wakeup->pattern_idx))
10727 goto free_msg;
10728
10729 if (wakeup->tcp_match)
10730 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10731
10732 if (wakeup->tcp_connlost)
10733 nla_put_flag(msg,
10734 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10735
10736 if (wakeup->tcp_nomoretokens)
10737 nla_put_flag(msg,
10738 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10739
10740 if (wakeup->packet) {
10741 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10742 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10743
10744 if (!wakeup->packet_80211) {
10745 pkt_attr =
10746 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10747 len_attr =
10748 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10749 }
10750
10751 if (wakeup->packet_len &&
10752 nla_put_u32(msg, len_attr, wakeup->packet_len))
10753 goto free_msg;
10754
10755 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10756 wakeup->packet))
10757 goto free_msg;
10758 }
10759
10760 nla_nest_end(msg, reasons);
10761 }
10762
10763 err = genlmsg_end(msg, hdr);
10764 if (err < 0)
10765 goto free_msg;
10766
10767 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10768 nl80211_mlme_mcgrp.id, gfp);
10769 return;
10770
10771 free_msg:
10772 nlmsg_free(msg);
10773 }
10774 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10775 #endif
10776
10777 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10778 enum nl80211_tdls_operation oper,
10779 u16 reason_code, gfp_t gfp)
10780 {
10781 struct wireless_dev *wdev = dev->ieee80211_ptr;
10782 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10783 struct sk_buff *msg;
10784 void *hdr;
10785 int err;
10786
10787 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10788 reason_code);
10789
10790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10791 if (!msg)
10792 return;
10793
10794 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10795 if (!hdr) {
10796 nlmsg_free(msg);
10797 return;
10798 }
10799
10800 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10801 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10802 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10804 (reason_code > 0 &&
10805 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10806 goto nla_put_failure;
10807
10808 err = genlmsg_end(msg, hdr);
10809 if (err < 0) {
10810 nlmsg_free(msg);
10811 return;
10812 }
10813
10814 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10815 nl80211_mlme_mcgrp.id, gfp);
10816 return;
10817
10818 nla_put_failure:
10819 genlmsg_cancel(msg, hdr);
10820 nlmsg_free(msg);
10821 }
10822 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10823
10824 static int nl80211_netlink_notify(struct notifier_block * nb,
10825 unsigned long state,
10826 void *_notify)
10827 {
10828 struct netlink_notify *notify = _notify;
10829 struct cfg80211_registered_device *rdev;
10830 struct wireless_dev *wdev;
10831 struct cfg80211_beacon_registration *reg, *tmp;
10832
10833 if (state != NETLINK_URELEASE)
10834 return NOTIFY_DONE;
10835
10836 rcu_read_lock();
10837
10838 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10839 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10840 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10841
10842 spin_lock_bh(&rdev->beacon_registrations_lock);
10843 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10844 list) {
10845 if (reg->nlportid == notify->portid) {
10846 list_del(&reg->list);
10847 kfree(reg);
10848 break;
10849 }
10850 }
10851 spin_unlock_bh(&rdev->beacon_registrations_lock);
10852 }
10853
10854 rcu_read_unlock();
10855
10856 return NOTIFY_DONE;
10857 }
10858
10859 static struct notifier_block nl80211_netlink_notifier = {
10860 .notifier_call = nl80211_netlink_notify,
10861 };
10862
10863 void cfg80211_ft_event(struct net_device *netdev,
10864 struct cfg80211_ft_event_params *ft_event)
10865 {
10866 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10867 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10868 struct sk_buff *msg;
10869 void *hdr;
10870 int err;
10871
10872 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10873
10874 if (!ft_event->target_ap)
10875 return;
10876
10877 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10878 if (!msg)
10879 return;
10880
10881 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10882 if (!hdr) {
10883 nlmsg_free(msg);
10884 return;
10885 }
10886
10887 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10888 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10889 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10890 if (ft_event->ies)
10891 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10892 if (ft_event->ric_ies)
10893 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10894 ft_event->ric_ies);
10895
10896 err = genlmsg_end(msg, hdr);
10897 if (err < 0) {
10898 nlmsg_free(msg);
10899 return;
10900 }
10901
10902 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10903 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10904 }
10905 EXPORT_SYMBOL(cfg80211_ft_event);
10906
10907 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10908 {
10909 struct cfg80211_registered_device *rdev;
10910 struct sk_buff *msg;
10911 void *hdr;
10912 u32 nlportid;
10913
10914 rdev = wiphy_to_dev(wdev->wiphy);
10915 if (!rdev->crit_proto_nlportid)
10916 return;
10917
10918 nlportid = rdev->crit_proto_nlportid;
10919 rdev->crit_proto_nlportid = 0;
10920
10921 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10922 if (!msg)
10923 return;
10924
10925 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10926 if (!hdr)
10927 goto nla_put_failure;
10928
10929 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10930 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10931 goto nla_put_failure;
10932
10933 genlmsg_end(msg, hdr);
10934
10935 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10936 return;
10937
10938 nla_put_failure:
10939 if (hdr)
10940 genlmsg_cancel(msg, hdr);
10941 nlmsg_free(msg);
10942
10943 }
10944 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10945
10946 /* initialisation/exit functions */
10947
10948 int nl80211_init(void)
10949 {
10950 int err;
10951
10952 err = genl_register_family_with_ops(&nl80211_fam,
10953 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10954 if (err)
10955 return err;
10956
10957 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10958 if (err)
10959 goto err_out;
10960
10961 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10962 if (err)
10963 goto err_out;
10964
10965 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10966 if (err)
10967 goto err_out;
10968
10969 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10970 if (err)
10971 goto err_out;
10972
10973 #ifdef CONFIG_NL80211_TESTMODE
10974 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10975 if (err)
10976 goto err_out;
10977
10978 err = genl_register_mc_group(&nl80211_fam, &nl80211_vendor_mcgrp);
10979 if (err)
10980 goto err_out;
10981 #endif
10982
10983 err = netlink_register_notifier(&nl80211_netlink_notifier);
10984 if (err)
10985 goto err_out;
10986
10987 return 0;
10988 err_out:
10989 genl_unregister_family(&nl80211_fam);
10990 return err;
10991 }
10992
10993 void nl80211_exit(void)
10994 {
10995 netlink_unregister_notifier(&nl80211_netlink_notifier);
10996 genl_unregister_family(&nl80211_fam);
10997 }
kernel source for telekom puls (alcatel/mediatek)