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cfg80211: remove wiphy_idx_valid
[mirror_ubuntu-bionic-kernel.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 "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25 #include "rdev-ops.h"
26
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* returns ERR_PTR values */
50 static struct wireless_dev *
51 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
52 {
53 struct cfg80211_registered_device *rdev;
54 struct wireless_dev *result = NULL;
55 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
56 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
57 u64 wdev_id;
58 int wiphy_idx = -1;
59 int ifidx = -1;
60
61 assert_cfg80211_lock();
62
63 if (!have_ifidx && !have_wdev_id)
64 return ERR_PTR(-EINVAL);
65
66 if (have_ifidx)
67 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
68 if (have_wdev_id) {
69 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
70 wiphy_idx = wdev_id >> 32;
71 }
72
73 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
74 struct wireless_dev *wdev;
75
76 if (wiphy_net(&rdev->wiphy) != netns)
77 continue;
78
79 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
80 continue;
81
82 mutex_lock(&rdev->devlist_mtx);
83 list_for_each_entry(wdev, &rdev->wdev_list, list) {
84 if (have_ifidx && wdev->netdev &&
85 wdev->netdev->ifindex == ifidx) {
86 result = wdev;
87 break;
88 }
89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
90 result = wdev;
91 break;
92 }
93 }
94 mutex_unlock(&rdev->devlist_mtx);
95
96 if (result)
97 break;
98 }
99
100 if (result)
101 return result;
102 return ERR_PTR(-ENODEV);
103 }
104
105 static struct cfg80211_registered_device *
106 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
107 {
108 struct cfg80211_registered_device *rdev = NULL, *tmp;
109 struct net_device *netdev;
110
111 assert_cfg80211_lock();
112
113 if (!attrs[NL80211_ATTR_WIPHY] &&
114 !attrs[NL80211_ATTR_IFINDEX] &&
115 !attrs[NL80211_ATTR_WDEV])
116 return ERR_PTR(-EINVAL);
117
118 if (attrs[NL80211_ATTR_WIPHY])
119 rdev = cfg80211_rdev_by_wiphy_idx(
120 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
121
122 if (attrs[NL80211_ATTR_WDEV]) {
123 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
124 struct wireless_dev *wdev;
125 bool found = false;
126
127 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
128 if (tmp) {
129 /* make sure wdev exists */
130 mutex_lock(&tmp->devlist_mtx);
131 list_for_each_entry(wdev, &tmp->wdev_list, list) {
132 if (wdev->identifier != (u32)wdev_id)
133 continue;
134 found = true;
135 break;
136 }
137 mutex_unlock(&tmp->devlist_mtx);
138
139 if (!found)
140 tmp = NULL;
141
142 if (rdev && tmp != rdev)
143 return ERR_PTR(-EINVAL);
144 rdev = tmp;
145 }
146 }
147
148 if (attrs[NL80211_ATTR_IFINDEX]) {
149 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
150 netdev = dev_get_by_index(netns, ifindex);
151 if (netdev) {
152 if (netdev->ieee80211_ptr)
153 tmp = wiphy_to_dev(
154 netdev->ieee80211_ptr->wiphy);
155 else
156 tmp = NULL;
157
158 dev_put(netdev);
159
160 /* not wireless device -- return error */
161 if (!tmp)
162 return ERR_PTR(-EINVAL);
163
164 /* mismatch -- return error */
165 if (rdev && tmp != rdev)
166 return ERR_PTR(-EINVAL);
167
168 rdev = tmp;
169 }
170 }
171
172 if (!rdev)
173 return ERR_PTR(-ENODEV);
174
175 if (netns != wiphy_net(&rdev->wiphy))
176 return ERR_PTR(-ENODEV);
177
178 return rdev;
179 }
180
181 /*
182 * This function returns a pointer to the driver
183 * that the genl_info item that is passed refers to.
184 * If successful, it returns non-NULL and also locks
185 * the driver's mutex!
186 *
187 * This means that you need to call cfg80211_unlock_rdev()
188 * before being allowed to acquire &cfg80211_mutex!
189 *
190 * This is necessary because we need to lock the global
191 * mutex to get an item off the list safely, and then
192 * we lock the rdev mutex so it doesn't go away under us.
193 *
194 * We don't want to keep cfg80211_mutex locked
195 * for all the time in order to allow requests on
196 * other interfaces to go through at the same time.
197 *
198 * The result of this can be a PTR_ERR and hence must
199 * be checked with IS_ERR() for errors.
200 */
201 static struct cfg80211_registered_device *
202 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
203 {
204 struct cfg80211_registered_device *rdev;
205
206 mutex_lock(&cfg80211_mutex);
207 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
208
209 /* if it is not an error we grab the lock on
210 * it to assure it won't be going away while
211 * we operate on it */
212 if (!IS_ERR(rdev))
213 mutex_lock(&rdev->mtx);
214
215 mutex_unlock(&cfg80211_mutex);
216
217 return rdev;
218 }
219
220 /* policy for the attributes */
221 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
222 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
223 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
224 .len = 20-1 },
225 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
226
227 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
229 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
230 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
231 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
232
233 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
234 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
235 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
236 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
237 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
238
239 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
240 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
241 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
242
243 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
244 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
245
246 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
247 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
248 .len = WLAN_MAX_KEY_LEN },
249 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
250 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
251 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
252 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
253 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
254
255 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
256 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
257 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
258 .len = IEEE80211_MAX_DATA_LEN },
259 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_DATA_LEN },
261 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
262 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
263 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
264 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
265 .len = NL80211_MAX_SUPP_RATES },
266 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
267 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
268 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
269 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
270 .len = IEEE80211_MAX_MESH_ID_LEN },
271 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
272
273 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
274 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
275
276 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
277 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
278 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
279 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
280 .len = NL80211_MAX_SUPP_RATES },
281 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
282
283 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
285
286 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
287
288 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
289 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
290 .len = IEEE80211_MAX_DATA_LEN },
291 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
292 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
293
294 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
295 .len = IEEE80211_MAX_SSID_LEN },
296 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
297 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
298 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
299 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
301 [NL80211_ATTR_STA_FLAGS2] = {
302 .len = sizeof(struct nl80211_sta_flag_update),
303 },
304 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
305 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
306 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
307 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
308 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
309 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
310 [NL80211_ATTR_PID] = { .type = NLA_U32 },
311 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
312 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
313 .len = WLAN_PMKID_LEN },
314 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
315 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
316 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
317 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
318 .len = IEEE80211_MAX_DATA_LEN },
319 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
320 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
321 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
322 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
323 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
325 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
326 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
327 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
328 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
329 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
330 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
331 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
332 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
333 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
334 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
335 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
336 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
337 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
338 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
339 .len = IEEE80211_MAX_DATA_LEN },
340 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
341 .len = IEEE80211_MAX_DATA_LEN },
342 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
344 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
345 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
346 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
347 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
348 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
350 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
351 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
352 .len = IEEE80211_MAX_DATA_LEN },
353 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
354 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
355 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
356 .len = NL80211_HT_CAPABILITY_LEN
357 },
358 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
359 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
360 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
361 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
362 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
363 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
364 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
365 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
366 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
367 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
368 };
369
370 /* policy for the key attributes */
371 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
372 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
373 [NL80211_KEY_IDX] = { .type = NLA_U8 },
374 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
375 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
376 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
377 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
378 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
379 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
380 };
381
382 /* policy for the key default flags */
383 static const struct nla_policy
384 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
385 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
386 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
387 };
388
389 /* policy for WoWLAN attributes */
390 static const struct nla_policy
391 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
392 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
393 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
394 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
395 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
396 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
397 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
398 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
399 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
400 };
401
402 /* policy for GTK rekey offload attributes */
403 static const struct nla_policy
404 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
405 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
406 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
407 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
408 };
409
410 static const struct nla_policy
411 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
412 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
413 .len = IEEE80211_MAX_SSID_LEN },
414 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
415 };
416
417 /* ifidx get helper */
418 static int nl80211_get_ifidx(struct netlink_callback *cb)
419 {
420 int res;
421
422 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
423 nl80211_fam.attrbuf, nl80211_fam.maxattr,
424 nl80211_policy);
425 if (res)
426 return res;
427
428 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
429 return -EINVAL;
430
431 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
432 if (!res)
433 return -EINVAL;
434 return res;
435 }
436
437 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
438 struct netlink_callback *cb,
439 struct cfg80211_registered_device **rdev,
440 struct net_device **dev)
441 {
442 int ifidx = cb->args[0];
443 int err;
444
445 if (!ifidx)
446 ifidx = nl80211_get_ifidx(cb);
447 if (ifidx < 0)
448 return ifidx;
449
450 cb->args[0] = ifidx;
451
452 rtnl_lock();
453
454 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
455 if (!*dev) {
456 err = -ENODEV;
457 goto out_rtnl;
458 }
459
460 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
461 if (IS_ERR(*rdev)) {
462 err = PTR_ERR(*rdev);
463 goto out_rtnl;
464 }
465
466 return 0;
467 out_rtnl:
468 rtnl_unlock();
469 return err;
470 }
471
472 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
473 {
474 cfg80211_unlock_rdev(rdev);
475 rtnl_unlock();
476 }
477
478 /* IE validation */
479 static bool is_valid_ie_attr(const struct nlattr *attr)
480 {
481 const u8 *pos;
482 int len;
483
484 if (!attr)
485 return true;
486
487 pos = nla_data(attr);
488 len = nla_len(attr);
489
490 while (len) {
491 u8 elemlen;
492
493 if (len < 2)
494 return false;
495 len -= 2;
496
497 elemlen = pos[1];
498 if (elemlen > len)
499 return false;
500
501 len -= elemlen;
502 pos += 2 + elemlen;
503 }
504
505 return true;
506 }
507
508 /* message building helper */
509 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
510 int flags, u8 cmd)
511 {
512 /* since there is no private header just add the generic one */
513 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
514 }
515
516 static int nl80211_msg_put_channel(struct sk_buff *msg,
517 struct ieee80211_channel *chan)
518 {
519 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
520 chan->center_freq))
521 goto nla_put_failure;
522
523 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
524 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
525 goto nla_put_failure;
526 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
527 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
528 goto nla_put_failure;
529 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
530 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
531 goto nla_put_failure;
532 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
533 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
534 goto nla_put_failure;
535
536 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
537 DBM_TO_MBM(chan->max_power)))
538 goto nla_put_failure;
539
540 return 0;
541
542 nla_put_failure:
543 return -ENOBUFS;
544 }
545
546 /* netlink command implementations */
547
548 struct key_parse {
549 struct key_params p;
550 int idx;
551 int type;
552 bool def, defmgmt;
553 bool def_uni, def_multi;
554 };
555
556 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
557 {
558 struct nlattr *tb[NL80211_KEY_MAX + 1];
559 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
560 nl80211_key_policy);
561 if (err)
562 return err;
563
564 k->def = !!tb[NL80211_KEY_DEFAULT];
565 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
566
567 if (k->def) {
568 k->def_uni = true;
569 k->def_multi = true;
570 }
571 if (k->defmgmt)
572 k->def_multi = true;
573
574 if (tb[NL80211_KEY_IDX])
575 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
576
577 if (tb[NL80211_KEY_DATA]) {
578 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
579 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
580 }
581
582 if (tb[NL80211_KEY_SEQ]) {
583 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
584 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
585 }
586
587 if (tb[NL80211_KEY_CIPHER])
588 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
589
590 if (tb[NL80211_KEY_TYPE]) {
591 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
592 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
593 return -EINVAL;
594 }
595
596 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
597 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
598 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
599 tb[NL80211_KEY_DEFAULT_TYPES],
600 nl80211_key_default_policy);
601 if (err)
602 return err;
603
604 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
605 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
606 }
607
608 return 0;
609 }
610
611 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
612 {
613 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
614 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
615 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
616 }
617
618 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
619 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
620 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
621 }
622
623 if (info->attrs[NL80211_ATTR_KEY_IDX])
624 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
625
626 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
627 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
628
629 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
630 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
631
632 if (k->def) {
633 k->def_uni = true;
634 k->def_multi = true;
635 }
636 if (k->defmgmt)
637 k->def_multi = true;
638
639 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
640 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
641 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
642 return -EINVAL;
643 }
644
645 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
646 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
647 int err = nla_parse_nested(
648 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
649 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
650 nl80211_key_default_policy);
651 if (err)
652 return err;
653
654 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
655 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
656 }
657
658 return 0;
659 }
660
661 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
662 {
663 int err;
664
665 memset(k, 0, sizeof(*k));
666 k->idx = -1;
667 k->type = -1;
668
669 if (info->attrs[NL80211_ATTR_KEY])
670 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
671 else
672 err = nl80211_parse_key_old(info, k);
673
674 if (err)
675 return err;
676
677 if (k->def && k->defmgmt)
678 return -EINVAL;
679
680 if (k->defmgmt) {
681 if (k->def_uni || !k->def_multi)
682 return -EINVAL;
683 }
684
685 if (k->idx != -1) {
686 if (k->defmgmt) {
687 if (k->idx < 4 || k->idx > 5)
688 return -EINVAL;
689 } else if (k->def) {
690 if (k->idx < 0 || k->idx > 3)
691 return -EINVAL;
692 } else {
693 if (k->idx < 0 || k->idx > 5)
694 return -EINVAL;
695 }
696 }
697
698 return 0;
699 }
700
701 static struct cfg80211_cached_keys *
702 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
703 struct nlattr *keys, bool *no_ht)
704 {
705 struct key_parse parse;
706 struct nlattr *key;
707 struct cfg80211_cached_keys *result;
708 int rem, err, def = 0;
709
710 result = kzalloc(sizeof(*result), GFP_KERNEL);
711 if (!result)
712 return ERR_PTR(-ENOMEM);
713
714 result->def = -1;
715 result->defmgmt = -1;
716
717 nla_for_each_nested(key, keys, rem) {
718 memset(&parse, 0, sizeof(parse));
719 parse.idx = -1;
720
721 err = nl80211_parse_key_new(key, &parse);
722 if (err)
723 goto error;
724 err = -EINVAL;
725 if (!parse.p.key)
726 goto error;
727 if (parse.idx < 0 || parse.idx > 4)
728 goto error;
729 if (parse.def) {
730 if (def)
731 goto error;
732 def = 1;
733 result->def = parse.idx;
734 if (!parse.def_uni || !parse.def_multi)
735 goto error;
736 } else if (parse.defmgmt)
737 goto error;
738 err = cfg80211_validate_key_settings(rdev, &parse.p,
739 parse.idx, false, NULL);
740 if (err)
741 goto error;
742 result->params[parse.idx].cipher = parse.p.cipher;
743 result->params[parse.idx].key_len = parse.p.key_len;
744 result->params[parse.idx].key = result->data[parse.idx];
745 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
746
747 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
748 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
749 if (no_ht)
750 *no_ht = true;
751 }
752 }
753
754 return result;
755 error:
756 kfree(result);
757 return ERR_PTR(err);
758 }
759
760 static int nl80211_key_allowed(struct wireless_dev *wdev)
761 {
762 ASSERT_WDEV_LOCK(wdev);
763
764 switch (wdev->iftype) {
765 case NL80211_IFTYPE_AP:
766 case NL80211_IFTYPE_AP_VLAN:
767 case NL80211_IFTYPE_P2P_GO:
768 case NL80211_IFTYPE_MESH_POINT:
769 break;
770 case NL80211_IFTYPE_ADHOC:
771 if (!wdev->current_bss)
772 return -ENOLINK;
773 break;
774 case NL80211_IFTYPE_STATION:
775 case NL80211_IFTYPE_P2P_CLIENT:
776 if (wdev->sme_state != CFG80211_SME_CONNECTED)
777 return -ENOLINK;
778 break;
779 default:
780 return -EINVAL;
781 }
782
783 return 0;
784 }
785
786 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
787 {
788 struct nlattr *nl_modes = nla_nest_start(msg, attr);
789 int i;
790
791 if (!nl_modes)
792 goto nla_put_failure;
793
794 i = 0;
795 while (ifmodes) {
796 if ((ifmodes & 1) && nla_put_flag(msg, i))
797 goto nla_put_failure;
798 ifmodes >>= 1;
799 i++;
800 }
801
802 nla_nest_end(msg, nl_modes);
803 return 0;
804
805 nla_put_failure:
806 return -ENOBUFS;
807 }
808
809 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
810 struct sk_buff *msg)
811 {
812 struct nlattr *nl_combis;
813 int i, j;
814
815 nl_combis = nla_nest_start(msg,
816 NL80211_ATTR_INTERFACE_COMBINATIONS);
817 if (!nl_combis)
818 goto nla_put_failure;
819
820 for (i = 0; i < wiphy->n_iface_combinations; i++) {
821 const struct ieee80211_iface_combination *c;
822 struct nlattr *nl_combi, *nl_limits;
823
824 c = &wiphy->iface_combinations[i];
825
826 nl_combi = nla_nest_start(msg, i + 1);
827 if (!nl_combi)
828 goto nla_put_failure;
829
830 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
831 if (!nl_limits)
832 goto nla_put_failure;
833
834 for (j = 0; j < c->n_limits; j++) {
835 struct nlattr *nl_limit;
836
837 nl_limit = nla_nest_start(msg, j + 1);
838 if (!nl_limit)
839 goto nla_put_failure;
840 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
841 c->limits[j].max))
842 goto nla_put_failure;
843 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
844 c->limits[j].types))
845 goto nla_put_failure;
846 nla_nest_end(msg, nl_limit);
847 }
848
849 nla_nest_end(msg, nl_limits);
850
851 if (c->beacon_int_infra_match &&
852 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
853 goto nla_put_failure;
854 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
855 c->num_different_channels) ||
856 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
857 c->max_interfaces))
858 goto nla_put_failure;
859
860 nla_nest_end(msg, nl_combi);
861 }
862
863 nla_nest_end(msg, nl_combis);
864
865 return 0;
866 nla_put_failure:
867 return -ENOBUFS;
868 }
869
870 static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
871 struct cfg80211_registered_device *dev)
872 {
873 void *hdr;
874 struct nlattr *nl_bands, *nl_band;
875 struct nlattr *nl_freqs, *nl_freq;
876 struct nlattr *nl_rates, *nl_rate;
877 struct nlattr *nl_cmds;
878 enum ieee80211_band band;
879 struct ieee80211_channel *chan;
880 struct ieee80211_rate *rate;
881 int i;
882 const struct ieee80211_txrx_stypes *mgmt_stypes =
883 dev->wiphy.mgmt_stypes;
884
885 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
886 if (!hdr)
887 return -1;
888
889 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
890 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
891 nla_put_u32(msg, NL80211_ATTR_GENERATION,
892 cfg80211_rdev_list_generation) ||
893 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
894 dev->wiphy.retry_short) ||
895 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
896 dev->wiphy.retry_long) ||
897 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
898 dev->wiphy.frag_threshold) ||
899 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
900 dev->wiphy.rts_threshold) ||
901 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
902 dev->wiphy.coverage_class) ||
903 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
904 dev->wiphy.max_scan_ssids) ||
905 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
906 dev->wiphy.max_sched_scan_ssids) ||
907 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
908 dev->wiphy.max_scan_ie_len) ||
909 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
910 dev->wiphy.max_sched_scan_ie_len) ||
911 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
912 dev->wiphy.max_match_sets))
913 goto nla_put_failure;
914
915 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
916 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
917 goto nla_put_failure;
918 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
919 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
920 goto nla_put_failure;
921 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
922 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
923 goto nla_put_failure;
924 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
925 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
926 goto nla_put_failure;
927 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
928 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
929 goto nla_put_failure;
930 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
931 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
932 goto nla_put_failure;
933
934 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
935 sizeof(u32) * dev->wiphy.n_cipher_suites,
936 dev->wiphy.cipher_suites))
937 goto nla_put_failure;
938
939 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
940 dev->wiphy.max_num_pmkids))
941 goto nla_put_failure;
942
943 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
944 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
945 goto nla_put_failure;
946
947 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
948 dev->wiphy.available_antennas_tx) ||
949 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
950 dev->wiphy.available_antennas_rx))
951 goto nla_put_failure;
952
953 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
954 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
955 dev->wiphy.probe_resp_offload))
956 goto nla_put_failure;
957
958 if ((dev->wiphy.available_antennas_tx ||
959 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
960 u32 tx_ant = 0, rx_ant = 0;
961 int res;
962 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
963 if (!res) {
964 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
965 tx_ant) ||
966 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
967 rx_ant))
968 goto nla_put_failure;
969 }
970 }
971
972 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
973 dev->wiphy.interface_modes))
974 goto nla_put_failure;
975
976 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
977 if (!nl_bands)
978 goto nla_put_failure;
979
980 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
981 if (!dev->wiphy.bands[band])
982 continue;
983
984 nl_band = nla_nest_start(msg, band);
985 if (!nl_band)
986 goto nla_put_failure;
987
988 /* add HT info */
989 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
990 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
991 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
992 &dev->wiphy.bands[band]->ht_cap.mcs) ||
993 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
994 dev->wiphy.bands[band]->ht_cap.cap) ||
995 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
996 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
997 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
998 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
999 goto nla_put_failure;
1000
1001 /* add VHT info */
1002 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
1003 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1004 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
1005 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
1006 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1007 dev->wiphy.bands[band]->vht_cap.cap)))
1008 goto nla_put_failure;
1009
1010 /* add frequencies */
1011 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
1012 if (!nl_freqs)
1013 goto nla_put_failure;
1014
1015 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1016 nl_freq = nla_nest_start(msg, i);
1017 if (!nl_freq)
1018 goto nla_put_failure;
1019
1020 chan = &dev->wiphy.bands[band]->channels[i];
1021
1022 if (nl80211_msg_put_channel(msg, chan))
1023 goto nla_put_failure;
1024
1025 nla_nest_end(msg, nl_freq);
1026 }
1027
1028 nla_nest_end(msg, nl_freqs);
1029
1030 /* add bitrates */
1031 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1032 if (!nl_rates)
1033 goto nla_put_failure;
1034
1035 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1036 nl_rate = nla_nest_start(msg, i);
1037 if (!nl_rate)
1038 goto nla_put_failure;
1039
1040 rate = &dev->wiphy.bands[band]->bitrates[i];
1041 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1042 rate->bitrate))
1043 goto nla_put_failure;
1044 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1045 nla_put_flag(msg,
1046 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1047 goto nla_put_failure;
1048
1049 nla_nest_end(msg, nl_rate);
1050 }
1051
1052 nla_nest_end(msg, nl_rates);
1053
1054 nla_nest_end(msg, nl_band);
1055 }
1056 nla_nest_end(msg, nl_bands);
1057
1058 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1059 if (!nl_cmds)
1060 goto nla_put_failure;
1061
1062 i = 0;
1063 #define CMD(op, n) \
1064 do { \
1065 if (dev->ops->op) { \
1066 i++; \
1067 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1068 goto nla_put_failure; \
1069 } \
1070 } while (0)
1071
1072 CMD(add_virtual_intf, NEW_INTERFACE);
1073 CMD(change_virtual_intf, SET_INTERFACE);
1074 CMD(add_key, NEW_KEY);
1075 CMD(start_ap, START_AP);
1076 CMD(add_station, NEW_STATION);
1077 CMD(add_mpath, NEW_MPATH);
1078 CMD(update_mesh_config, SET_MESH_CONFIG);
1079 CMD(change_bss, SET_BSS);
1080 CMD(auth, AUTHENTICATE);
1081 CMD(assoc, ASSOCIATE);
1082 CMD(deauth, DEAUTHENTICATE);
1083 CMD(disassoc, DISASSOCIATE);
1084 CMD(join_ibss, JOIN_IBSS);
1085 CMD(join_mesh, JOIN_MESH);
1086 CMD(set_pmksa, SET_PMKSA);
1087 CMD(del_pmksa, DEL_PMKSA);
1088 CMD(flush_pmksa, FLUSH_PMKSA);
1089 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1090 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1091 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1092 CMD(mgmt_tx, FRAME);
1093 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1094 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1095 i++;
1096 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1097 goto nla_put_failure;
1098 }
1099 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1100 dev->ops->join_mesh) {
1101 i++;
1102 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1103 goto nla_put_failure;
1104 }
1105 CMD(set_wds_peer, SET_WDS_PEER);
1106 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1107 CMD(tdls_mgmt, TDLS_MGMT);
1108 CMD(tdls_oper, TDLS_OPER);
1109 }
1110 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1111 CMD(sched_scan_start, START_SCHED_SCAN);
1112 CMD(probe_client, PROBE_CLIENT);
1113 CMD(set_noack_map, SET_NOACK_MAP);
1114 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1115 i++;
1116 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1117 goto nla_put_failure;
1118 }
1119 CMD(start_p2p_device, START_P2P_DEVICE);
1120 CMD(set_mcast_rate, SET_MCAST_RATE);
1121
1122 #ifdef CONFIG_NL80211_TESTMODE
1123 CMD(testmode_cmd, TESTMODE);
1124 #endif
1125
1126 #undef CMD
1127
1128 if (dev->ops->connect || dev->ops->auth) {
1129 i++;
1130 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1131 goto nla_put_failure;
1132 }
1133
1134 if (dev->ops->disconnect || dev->ops->deauth) {
1135 i++;
1136 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1137 goto nla_put_failure;
1138 }
1139
1140 nla_nest_end(msg, nl_cmds);
1141
1142 if (dev->ops->remain_on_channel &&
1143 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1144 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1145 dev->wiphy.max_remain_on_channel_duration))
1146 goto nla_put_failure;
1147
1148 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1149 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1150 goto nla_put_failure;
1151
1152 if (mgmt_stypes) {
1153 u16 stypes;
1154 struct nlattr *nl_ftypes, *nl_ifs;
1155 enum nl80211_iftype ift;
1156
1157 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1158 if (!nl_ifs)
1159 goto nla_put_failure;
1160
1161 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1162 nl_ftypes = nla_nest_start(msg, ift);
1163 if (!nl_ftypes)
1164 goto nla_put_failure;
1165 i = 0;
1166 stypes = mgmt_stypes[ift].tx;
1167 while (stypes) {
1168 if ((stypes & 1) &&
1169 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1170 (i << 4) | IEEE80211_FTYPE_MGMT))
1171 goto nla_put_failure;
1172 stypes >>= 1;
1173 i++;
1174 }
1175 nla_nest_end(msg, nl_ftypes);
1176 }
1177
1178 nla_nest_end(msg, nl_ifs);
1179
1180 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1181 if (!nl_ifs)
1182 goto nla_put_failure;
1183
1184 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1185 nl_ftypes = nla_nest_start(msg, ift);
1186 if (!nl_ftypes)
1187 goto nla_put_failure;
1188 i = 0;
1189 stypes = mgmt_stypes[ift].rx;
1190 while (stypes) {
1191 if ((stypes & 1) &&
1192 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1193 (i << 4) | IEEE80211_FTYPE_MGMT))
1194 goto nla_put_failure;
1195 stypes >>= 1;
1196 i++;
1197 }
1198 nla_nest_end(msg, nl_ftypes);
1199 }
1200 nla_nest_end(msg, nl_ifs);
1201 }
1202
1203 #ifdef CONFIG_PM
1204 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1205 struct nlattr *nl_wowlan;
1206
1207 nl_wowlan = nla_nest_start(msg,
1208 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1209 if (!nl_wowlan)
1210 goto nla_put_failure;
1211
1212 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1213 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1214 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1215 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1216 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1217 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1218 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1219 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1220 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1221 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1222 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1223 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1224 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1225 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1226 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1227 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1228 goto nla_put_failure;
1229 if (dev->wiphy.wowlan.n_patterns) {
1230 struct nl80211_wowlan_pattern_support pat = {
1231 .max_patterns = dev->wiphy.wowlan.n_patterns,
1232 .min_pattern_len =
1233 dev->wiphy.wowlan.pattern_min_len,
1234 .max_pattern_len =
1235 dev->wiphy.wowlan.pattern_max_len,
1236 };
1237 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1238 sizeof(pat), &pat))
1239 goto nla_put_failure;
1240 }
1241
1242 nla_nest_end(msg, nl_wowlan);
1243 }
1244 #endif
1245
1246 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1247 dev->wiphy.software_iftypes))
1248 goto nla_put_failure;
1249
1250 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1251 goto nla_put_failure;
1252
1253 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1254 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1255 dev->wiphy.ap_sme_capa))
1256 goto nla_put_failure;
1257
1258 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1259 dev->wiphy.features))
1260 goto nla_put_failure;
1261
1262 if (dev->wiphy.ht_capa_mod_mask &&
1263 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1264 sizeof(*dev->wiphy.ht_capa_mod_mask),
1265 dev->wiphy.ht_capa_mod_mask))
1266 goto nla_put_failure;
1267
1268 return genlmsg_end(msg, hdr);
1269
1270 nla_put_failure:
1271 genlmsg_cancel(msg, hdr);
1272 return -EMSGSIZE;
1273 }
1274
1275 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1276 {
1277 int idx = 0;
1278 int start = cb->args[0];
1279 struct cfg80211_registered_device *dev;
1280
1281 mutex_lock(&cfg80211_mutex);
1282 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1283 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1284 continue;
1285 if (++idx <= start)
1286 continue;
1287 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
1288 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1289 dev) < 0) {
1290 idx--;
1291 break;
1292 }
1293 }
1294 mutex_unlock(&cfg80211_mutex);
1295
1296 cb->args[0] = idx;
1297
1298 return skb->len;
1299 }
1300
1301 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1302 {
1303 struct sk_buff *msg;
1304 struct cfg80211_registered_device *dev = info->user_ptr[0];
1305
1306 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1307 if (!msg)
1308 return -ENOMEM;
1309
1310 if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 0) {
1311 nlmsg_free(msg);
1312 return -ENOBUFS;
1313 }
1314
1315 return genlmsg_reply(msg, info);
1316 }
1317
1318 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1319 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1320 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1321 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1322 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1323 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1324 };
1325
1326 static int parse_txq_params(struct nlattr *tb[],
1327 struct ieee80211_txq_params *txq_params)
1328 {
1329 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1330 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1331 !tb[NL80211_TXQ_ATTR_AIFS])
1332 return -EINVAL;
1333
1334 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1335 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1336 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1337 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1338 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1339
1340 if (txq_params->ac >= NL80211_NUM_ACS)
1341 return -EINVAL;
1342
1343 return 0;
1344 }
1345
1346 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1347 {
1348 /*
1349 * You can only set the channel explicitly for WDS interfaces,
1350 * all others have their channel managed via their respective
1351 * "establish a connection" command (connect, join, ...)
1352 *
1353 * For AP/GO and mesh mode, the channel can be set with the
1354 * channel userspace API, but is only stored and passed to the
1355 * low-level driver when the AP starts or the mesh is joined.
1356 * This is for backward compatibility, userspace can also give
1357 * the channel in the start-ap or join-mesh commands instead.
1358 *
1359 * Monitors are special as they are normally slaved to
1360 * whatever else is going on, so they have their own special
1361 * operation to set the monitor channel if possible.
1362 */
1363 return !wdev ||
1364 wdev->iftype == NL80211_IFTYPE_AP ||
1365 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1366 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1367 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1368 }
1369
1370 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1371 struct genl_info *info,
1372 struct cfg80211_chan_def *chandef)
1373 {
1374 u32 control_freq;
1375
1376 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1377 return -EINVAL;
1378
1379 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1380
1381 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1382 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1383 chandef->center_freq1 = control_freq;
1384 chandef->center_freq2 = 0;
1385
1386 /* Primary channel not allowed */
1387 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1388 return -EINVAL;
1389
1390 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1391 enum nl80211_channel_type chantype;
1392
1393 chantype = nla_get_u32(
1394 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1395
1396 switch (chantype) {
1397 case NL80211_CHAN_NO_HT:
1398 case NL80211_CHAN_HT20:
1399 case NL80211_CHAN_HT40PLUS:
1400 case NL80211_CHAN_HT40MINUS:
1401 cfg80211_chandef_create(chandef, chandef->chan,
1402 chantype);
1403 break;
1404 default:
1405 return -EINVAL;
1406 }
1407 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1408 chandef->width =
1409 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1410 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1411 chandef->center_freq1 =
1412 nla_get_u32(
1413 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1414 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1415 chandef->center_freq2 =
1416 nla_get_u32(
1417 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1418 }
1419
1420 if (!cfg80211_chandef_valid(chandef))
1421 return -EINVAL;
1422
1423 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1424 IEEE80211_CHAN_DISABLED))
1425 return -EINVAL;
1426
1427 return 0;
1428 }
1429
1430 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1431 struct wireless_dev *wdev,
1432 struct genl_info *info)
1433 {
1434 struct cfg80211_chan_def chandef;
1435 int result;
1436 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1437
1438 if (wdev)
1439 iftype = wdev->iftype;
1440
1441 if (!nl80211_can_set_dev_channel(wdev))
1442 return -EOPNOTSUPP;
1443
1444 result = nl80211_parse_chandef(rdev, info, &chandef);
1445 if (result)
1446 return result;
1447
1448 mutex_lock(&rdev->devlist_mtx);
1449 switch (iftype) {
1450 case NL80211_IFTYPE_AP:
1451 case NL80211_IFTYPE_P2P_GO:
1452 if (wdev->beacon_interval) {
1453 result = -EBUSY;
1454 break;
1455 }
1456 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1457 result = -EINVAL;
1458 break;
1459 }
1460 wdev->preset_chandef = chandef;
1461 result = 0;
1462 break;
1463 case NL80211_IFTYPE_MESH_POINT:
1464 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1465 break;
1466 case NL80211_IFTYPE_MONITOR:
1467 result = cfg80211_set_monitor_channel(rdev, &chandef);
1468 break;
1469 default:
1470 result = -EINVAL;
1471 }
1472 mutex_unlock(&rdev->devlist_mtx);
1473
1474 return result;
1475 }
1476
1477 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1478 {
1479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1480 struct net_device *netdev = info->user_ptr[1];
1481
1482 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1483 }
1484
1485 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1486 {
1487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1488 struct net_device *dev = info->user_ptr[1];
1489 struct wireless_dev *wdev = dev->ieee80211_ptr;
1490 const u8 *bssid;
1491
1492 if (!info->attrs[NL80211_ATTR_MAC])
1493 return -EINVAL;
1494
1495 if (netif_running(dev))
1496 return -EBUSY;
1497
1498 if (!rdev->ops->set_wds_peer)
1499 return -EOPNOTSUPP;
1500
1501 if (wdev->iftype != NL80211_IFTYPE_WDS)
1502 return -EOPNOTSUPP;
1503
1504 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1505 return rdev_set_wds_peer(rdev, dev, bssid);
1506 }
1507
1508
1509 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1510 {
1511 struct cfg80211_registered_device *rdev;
1512 struct net_device *netdev = NULL;
1513 struct wireless_dev *wdev;
1514 int result = 0, rem_txq_params = 0;
1515 struct nlattr *nl_txq_params;
1516 u32 changed;
1517 u8 retry_short = 0, retry_long = 0;
1518 u32 frag_threshold = 0, rts_threshold = 0;
1519 u8 coverage_class = 0;
1520
1521 /*
1522 * Try to find the wiphy and netdev. Normally this
1523 * function shouldn't need the netdev, but this is
1524 * done for backward compatibility -- previously
1525 * setting the channel was done per wiphy, but now
1526 * it is per netdev. Previous userland like hostapd
1527 * also passed a netdev to set_wiphy, so that it is
1528 * possible to let that go to the right netdev!
1529 */
1530 mutex_lock(&cfg80211_mutex);
1531
1532 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1533 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1534
1535 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1536 if (netdev && netdev->ieee80211_ptr) {
1537 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1538 mutex_lock(&rdev->mtx);
1539 } else
1540 netdev = NULL;
1541 }
1542
1543 if (!netdev) {
1544 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1545 info->attrs);
1546 if (IS_ERR(rdev)) {
1547 mutex_unlock(&cfg80211_mutex);
1548 return PTR_ERR(rdev);
1549 }
1550 wdev = NULL;
1551 netdev = NULL;
1552 result = 0;
1553
1554 mutex_lock(&rdev->mtx);
1555 } else
1556 wdev = netdev->ieee80211_ptr;
1557
1558 /*
1559 * end workaround code, by now the rdev is available
1560 * and locked, and wdev may or may not be NULL.
1561 */
1562
1563 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1564 result = cfg80211_dev_rename(
1565 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1566
1567 mutex_unlock(&cfg80211_mutex);
1568
1569 if (result)
1570 goto bad_res;
1571
1572 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1573 struct ieee80211_txq_params txq_params;
1574 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1575
1576 if (!rdev->ops->set_txq_params) {
1577 result = -EOPNOTSUPP;
1578 goto bad_res;
1579 }
1580
1581 if (!netdev) {
1582 result = -EINVAL;
1583 goto bad_res;
1584 }
1585
1586 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1587 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1588 result = -EINVAL;
1589 goto bad_res;
1590 }
1591
1592 if (!netif_running(netdev)) {
1593 result = -ENETDOWN;
1594 goto bad_res;
1595 }
1596
1597 nla_for_each_nested(nl_txq_params,
1598 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1599 rem_txq_params) {
1600 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1601 nla_data(nl_txq_params),
1602 nla_len(nl_txq_params),
1603 txq_params_policy);
1604 result = parse_txq_params(tb, &txq_params);
1605 if (result)
1606 goto bad_res;
1607
1608 result = rdev_set_txq_params(rdev, netdev,
1609 &txq_params);
1610 if (result)
1611 goto bad_res;
1612 }
1613 }
1614
1615 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1616 result = __nl80211_set_channel(rdev,
1617 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1618 info);
1619 if (result)
1620 goto bad_res;
1621 }
1622
1623 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1624 struct wireless_dev *txp_wdev = wdev;
1625 enum nl80211_tx_power_setting type;
1626 int idx, mbm = 0;
1627
1628 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1629 txp_wdev = NULL;
1630
1631 if (!rdev->ops->set_tx_power) {
1632 result = -EOPNOTSUPP;
1633 goto bad_res;
1634 }
1635
1636 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1637 type = nla_get_u32(info->attrs[idx]);
1638
1639 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1640 (type != NL80211_TX_POWER_AUTOMATIC)) {
1641 result = -EINVAL;
1642 goto bad_res;
1643 }
1644
1645 if (type != NL80211_TX_POWER_AUTOMATIC) {
1646 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1647 mbm = nla_get_u32(info->attrs[idx]);
1648 }
1649
1650 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1651 if (result)
1652 goto bad_res;
1653 }
1654
1655 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1656 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1657 u32 tx_ant, rx_ant;
1658 if ((!rdev->wiphy.available_antennas_tx &&
1659 !rdev->wiphy.available_antennas_rx) ||
1660 !rdev->ops->set_antenna) {
1661 result = -EOPNOTSUPP;
1662 goto bad_res;
1663 }
1664
1665 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1666 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1667
1668 /* reject antenna configurations which don't match the
1669 * available antenna masks, except for the "all" mask */
1670 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1671 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1672 result = -EINVAL;
1673 goto bad_res;
1674 }
1675
1676 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1677 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1678
1679 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
1680 if (result)
1681 goto bad_res;
1682 }
1683
1684 changed = 0;
1685
1686 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1687 retry_short = nla_get_u8(
1688 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1689 if (retry_short == 0) {
1690 result = -EINVAL;
1691 goto bad_res;
1692 }
1693 changed |= WIPHY_PARAM_RETRY_SHORT;
1694 }
1695
1696 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1697 retry_long = nla_get_u8(
1698 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1699 if (retry_long == 0) {
1700 result = -EINVAL;
1701 goto bad_res;
1702 }
1703 changed |= WIPHY_PARAM_RETRY_LONG;
1704 }
1705
1706 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1707 frag_threshold = nla_get_u32(
1708 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1709 if (frag_threshold < 256) {
1710 result = -EINVAL;
1711 goto bad_res;
1712 }
1713 if (frag_threshold != (u32) -1) {
1714 /*
1715 * Fragments (apart from the last one) are required to
1716 * have even length. Make the fragmentation code
1717 * simpler by stripping LSB should someone try to use
1718 * odd threshold value.
1719 */
1720 frag_threshold &= ~0x1;
1721 }
1722 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1723 }
1724
1725 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1726 rts_threshold = nla_get_u32(
1727 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1728 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1729 }
1730
1731 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1732 coverage_class = nla_get_u8(
1733 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1734 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1735 }
1736
1737 if (changed) {
1738 u8 old_retry_short, old_retry_long;
1739 u32 old_frag_threshold, old_rts_threshold;
1740 u8 old_coverage_class;
1741
1742 if (!rdev->ops->set_wiphy_params) {
1743 result = -EOPNOTSUPP;
1744 goto bad_res;
1745 }
1746
1747 old_retry_short = rdev->wiphy.retry_short;
1748 old_retry_long = rdev->wiphy.retry_long;
1749 old_frag_threshold = rdev->wiphy.frag_threshold;
1750 old_rts_threshold = rdev->wiphy.rts_threshold;
1751 old_coverage_class = rdev->wiphy.coverage_class;
1752
1753 if (changed & WIPHY_PARAM_RETRY_SHORT)
1754 rdev->wiphy.retry_short = retry_short;
1755 if (changed & WIPHY_PARAM_RETRY_LONG)
1756 rdev->wiphy.retry_long = retry_long;
1757 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1758 rdev->wiphy.frag_threshold = frag_threshold;
1759 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1760 rdev->wiphy.rts_threshold = rts_threshold;
1761 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1762 rdev->wiphy.coverage_class = coverage_class;
1763
1764 result = rdev_set_wiphy_params(rdev, changed);
1765 if (result) {
1766 rdev->wiphy.retry_short = old_retry_short;
1767 rdev->wiphy.retry_long = old_retry_long;
1768 rdev->wiphy.frag_threshold = old_frag_threshold;
1769 rdev->wiphy.rts_threshold = old_rts_threshold;
1770 rdev->wiphy.coverage_class = old_coverage_class;
1771 }
1772 }
1773
1774 bad_res:
1775 mutex_unlock(&rdev->mtx);
1776 if (netdev)
1777 dev_put(netdev);
1778 return result;
1779 }
1780
1781 static inline u64 wdev_id(struct wireless_dev *wdev)
1782 {
1783 return (u64)wdev->identifier |
1784 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1785 }
1786
1787 static int nl80211_send_chandef(struct sk_buff *msg,
1788 struct cfg80211_chan_def *chandef)
1789 {
1790 WARN_ON(!cfg80211_chandef_valid(chandef));
1791
1792 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1793 chandef->chan->center_freq))
1794 return -ENOBUFS;
1795 switch (chandef->width) {
1796 case NL80211_CHAN_WIDTH_20_NOHT:
1797 case NL80211_CHAN_WIDTH_20:
1798 case NL80211_CHAN_WIDTH_40:
1799 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1800 cfg80211_get_chandef_type(chandef)))
1801 return -ENOBUFS;
1802 break;
1803 default:
1804 break;
1805 }
1806 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
1807 return -ENOBUFS;
1808 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
1809 return -ENOBUFS;
1810 if (chandef->center_freq2 &&
1811 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
1812 return -ENOBUFS;
1813 return 0;
1814 }
1815
1816 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
1817 struct cfg80211_registered_device *rdev,
1818 struct wireless_dev *wdev)
1819 {
1820 struct net_device *dev = wdev->netdev;
1821 void *hdr;
1822
1823 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1824 if (!hdr)
1825 return -1;
1826
1827 if (dev &&
1828 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1829 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1830 goto nla_put_failure;
1831
1832 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1833 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1835 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1836 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1837 rdev->devlist_generation ^
1838 (cfg80211_rdev_list_generation << 2)))
1839 goto nla_put_failure;
1840
1841 if (rdev->ops->get_channel) {
1842 int ret;
1843 struct cfg80211_chan_def chandef;
1844
1845 ret = rdev_get_channel(rdev, wdev, &chandef);
1846 if (ret == 0) {
1847 if (nl80211_send_chandef(msg, &chandef))
1848 goto nla_put_failure;
1849 }
1850 }
1851
1852 if (wdev->ssid_len) {
1853 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
1854 goto nla_put_failure;
1855 }
1856
1857 return genlmsg_end(msg, hdr);
1858
1859 nla_put_failure:
1860 genlmsg_cancel(msg, hdr);
1861 return -EMSGSIZE;
1862 }
1863
1864 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1865 {
1866 int wp_idx = 0;
1867 int if_idx = 0;
1868 int wp_start = cb->args[0];
1869 int if_start = cb->args[1];
1870 struct cfg80211_registered_device *rdev;
1871 struct wireless_dev *wdev;
1872
1873 mutex_lock(&cfg80211_mutex);
1874 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1875 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1876 continue;
1877 if (wp_idx < wp_start) {
1878 wp_idx++;
1879 continue;
1880 }
1881 if_idx = 0;
1882
1883 mutex_lock(&rdev->devlist_mtx);
1884 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1885 if (if_idx < if_start) {
1886 if_idx++;
1887 continue;
1888 }
1889 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
1890 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1891 rdev, wdev) < 0) {
1892 mutex_unlock(&rdev->devlist_mtx);
1893 goto out;
1894 }
1895 if_idx++;
1896 }
1897 mutex_unlock(&rdev->devlist_mtx);
1898
1899 wp_idx++;
1900 }
1901 out:
1902 mutex_unlock(&cfg80211_mutex);
1903
1904 cb->args[0] = wp_idx;
1905 cb->args[1] = if_idx;
1906
1907 return skb->len;
1908 }
1909
1910 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1911 {
1912 struct sk_buff *msg;
1913 struct cfg80211_registered_device *dev = info->user_ptr[0];
1914 struct wireless_dev *wdev = info->user_ptr[1];
1915
1916 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1917 if (!msg)
1918 return -ENOMEM;
1919
1920 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
1921 dev, wdev) < 0) {
1922 nlmsg_free(msg);
1923 return -ENOBUFS;
1924 }
1925
1926 return genlmsg_reply(msg, info);
1927 }
1928
1929 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1930 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1931 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1932 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1933 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1934 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1935 };
1936
1937 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1938 {
1939 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1940 int flag;
1941
1942 *mntrflags = 0;
1943
1944 if (!nla)
1945 return -EINVAL;
1946
1947 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1948 nla, mntr_flags_policy))
1949 return -EINVAL;
1950
1951 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1952 if (flags[flag])
1953 *mntrflags |= (1<<flag);
1954
1955 return 0;
1956 }
1957
1958 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1959 struct net_device *netdev, u8 use_4addr,
1960 enum nl80211_iftype iftype)
1961 {
1962 if (!use_4addr) {
1963 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1964 return -EBUSY;
1965 return 0;
1966 }
1967
1968 switch (iftype) {
1969 case NL80211_IFTYPE_AP_VLAN:
1970 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1971 return 0;
1972 break;
1973 case NL80211_IFTYPE_STATION:
1974 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1975 return 0;
1976 break;
1977 default:
1978 break;
1979 }
1980
1981 return -EOPNOTSUPP;
1982 }
1983
1984 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1985 {
1986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1987 struct vif_params params;
1988 int err;
1989 enum nl80211_iftype otype, ntype;
1990 struct net_device *dev = info->user_ptr[1];
1991 u32 _flags, *flags = NULL;
1992 bool change = false;
1993
1994 memset(&params, 0, sizeof(params));
1995
1996 otype = ntype = dev->ieee80211_ptr->iftype;
1997
1998 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1999 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2000 if (otype != ntype)
2001 change = true;
2002 if (ntype > NL80211_IFTYPE_MAX)
2003 return -EINVAL;
2004 }
2005
2006 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2007 struct wireless_dev *wdev = dev->ieee80211_ptr;
2008
2009 if (ntype != NL80211_IFTYPE_MESH_POINT)
2010 return -EINVAL;
2011 if (netif_running(dev))
2012 return -EBUSY;
2013
2014 wdev_lock(wdev);
2015 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2016 IEEE80211_MAX_MESH_ID_LEN);
2017 wdev->mesh_id_up_len =
2018 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2019 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2020 wdev->mesh_id_up_len);
2021 wdev_unlock(wdev);
2022 }
2023
2024 if (info->attrs[NL80211_ATTR_4ADDR]) {
2025 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2026 change = true;
2027 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2028 if (err)
2029 return err;
2030 } else {
2031 params.use_4addr = -1;
2032 }
2033
2034 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2035 if (ntype != NL80211_IFTYPE_MONITOR)
2036 return -EINVAL;
2037 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2038 &_flags);
2039 if (err)
2040 return err;
2041
2042 flags = &_flags;
2043 change = true;
2044 }
2045
2046 if (change)
2047 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2048 else
2049 err = 0;
2050
2051 if (!err && params.use_4addr != -1)
2052 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2053
2054 return err;
2055 }
2056
2057 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2058 {
2059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2060 struct vif_params params;
2061 struct wireless_dev *wdev;
2062 struct sk_buff *msg;
2063 int err;
2064 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2065 u32 flags;
2066
2067 memset(&params, 0, sizeof(params));
2068
2069 if (!info->attrs[NL80211_ATTR_IFNAME])
2070 return -EINVAL;
2071
2072 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2073 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2074 if (type > NL80211_IFTYPE_MAX)
2075 return -EINVAL;
2076 }
2077
2078 if (!rdev->ops->add_virtual_intf ||
2079 !(rdev->wiphy.interface_modes & (1 << type)))
2080 return -EOPNOTSUPP;
2081
2082 if (info->attrs[NL80211_ATTR_4ADDR]) {
2083 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2084 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2085 if (err)
2086 return err;
2087 }
2088
2089 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2090 if (!msg)
2091 return -ENOMEM;
2092
2093 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2094 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2095 &flags);
2096 wdev = rdev_add_virtual_intf(rdev,
2097 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2098 type, err ? NULL : &flags, &params);
2099 if (IS_ERR(wdev)) {
2100 nlmsg_free(msg);
2101 return PTR_ERR(wdev);
2102 }
2103
2104 switch (type) {
2105 case NL80211_IFTYPE_MESH_POINT:
2106 if (!info->attrs[NL80211_ATTR_MESH_ID])
2107 break;
2108 wdev_lock(wdev);
2109 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2110 IEEE80211_MAX_MESH_ID_LEN);
2111 wdev->mesh_id_up_len =
2112 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2113 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2114 wdev->mesh_id_up_len);
2115 wdev_unlock(wdev);
2116 break;
2117 case NL80211_IFTYPE_P2P_DEVICE:
2118 /*
2119 * P2P Device doesn't have a netdev, so doesn't go
2120 * through the netdev notifier and must be added here
2121 */
2122 mutex_init(&wdev->mtx);
2123 INIT_LIST_HEAD(&wdev->event_list);
2124 spin_lock_init(&wdev->event_lock);
2125 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2126 spin_lock_init(&wdev->mgmt_registrations_lock);
2127
2128 mutex_lock(&rdev->devlist_mtx);
2129 wdev->identifier = ++rdev->wdev_id;
2130 list_add_rcu(&wdev->list, &rdev->wdev_list);
2131 rdev->devlist_generation++;
2132 mutex_unlock(&rdev->devlist_mtx);
2133 break;
2134 default:
2135 break;
2136 }
2137
2138 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2139 rdev, wdev) < 0) {
2140 nlmsg_free(msg);
2141 return -ENOBUFS;
2142 }
2143
2144 return genlmsg_reply(msg, info);
2145 }
2146
2147 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2148 {
2149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2150 struct wireless_dev *wdev = info->user_ptr[1];
2151
2152 if (!rdev->ops->del_virtual_intf)
2153 return -EOPNOTSUPP;
2154
2155 /*
2156 * If we remove a wireless device without a netdev then clear
2157 * user_ptr[1] so that nl80211_post_doit won't dereference it
2158 * to check if it needs to do dev_put(). Otherwise it crashes
2159 * since the wdev has been freed, unlike with a netdev where
2160 * we need the dev_put() for the netdev to really be freed.
2161 */
2162 if (!wdev->netdev)
2163 info->user_ptr[1] = NULL;
2164
2165 return rdev_del_virtual_intf(rdev, wdev);
2166 }
2167
2168 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2169 {
2170 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2171 struct net_device *dev = info->user_ptr[1];
2172 u16 noack_map;
2173
2174 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2175 return -EINVAL;
2176
2177 if (!rdev->ops->set_noack_map)
2178 return -EOPNOTSUPP;
2179
2180 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2181
2182 return rdev_set_noack_map(rdev, dev, noack_map);
2183 }
2184
2185 struct get_key_cookie {
2186 struct sk_buff *msg;
2187 int error;
2188 int idx;
2189 };
2190
2191 static void get_key_callback(void *c, struct key_params *params)
2192 {
2193 struct nlattr *key;
2194 struct get_key_cookie *cookie = c;
2195
2196 if ((params->key &&
2197 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2198 params->key_len, params->key)) ||
2199 (params->seq &&
2200 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2201 params->seq_len, params->seq)) ||
2202 (params->cipher &&
2203 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2204 params->cipher)))
2205 goto nla_put_failure;
2206
2207 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2208 if (!key)
2209 goto nla_put_failure;
2210
2211 if ((params->key &&
2212 nla_put(cookie->msg, NL80211_KEY_DATA,
2213 params->key_len, params->key)) ||
2214 (params->seq &&
2215 nla_put(cookie->msg, NL80211_KEY_SEQ,
2216 params->seq_len, params->seq)) ||
2217 (params->cipher &&
2218 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2219 params->cipher)))
2220 goto nla_put_failure;
2221
2222 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2223 goto nla_put_failure;
2224
2225 nla_nest_end(cookie->msg, key);
2226
2227 return;
2228 nla_put_failure:
2229 cookie->error = 1;
2230 }
2231
2232 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2233 {
2234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2235 int err;
2236 struct net_device *dev = info->user_ptr[1];
2237 u8 key_idx = 0;
2238 const u8 *mac_addr = NULL;
2239 bool pairwise;
2240 struct get_key_cookie cookie = {
2241 .error = 0,
2242 };
2243 void *hdr;
2244 struct sk_buff *msg;
2245
2246 if (info->attrs[NL80211_ATTR_KEY_IDX])
2247 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2248
2249 if (key_idx > 5)
2250 return -EINVAL;
2251
2252 if (info->attrs[NL80211_ATTR_MAC])
2253 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2254
2255 pairwise = !!mac_addr;
2256 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2257 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2258 if (kt >= NUM_NL80211_KEYTYPES)
2259 return -EINVAL;
2260 if (kt != NL80211_KEYTYPE_GROUP &&
2261 kt != NL80211_KEYTYPE_PAIRWISE)
2262 return -EINVAL;
2263 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2264 }
2265
2266 if (!rdev->ops->get_key)
2267 return -EOPNOTSUPP;
2268
2269 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2270 if (!msg)
2271 return -ENOMEM;
2272
2273 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2274 NL80211_CMD_NEW_KEY);
2275 if (IS_ERR(hdr))
2276 return PTR_ERR(hdr);
2277
2278 cookie.msg = msg;
2279 cookie.idx = key_idx;
2280
2281 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2282 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2283 goto nla_put_failure;
2284 if (mac_addr &&
2285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2286 goto nla_put_failure;
2287
2288 if (pairwise && mac_addr &&
2289 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2290 return -ENOENT;
2291
2292 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2293 get_key_callback);
2294
2295 if (err)
2296 goto free_msg;
2297
2298 if (cookie.error)
2299 goto nla_put_failure;
2300
2301 genlmsg_end(msg, hdr);
2302 return genlmsg_reply(msg, info);
2303
2304 nla_put_failure:
2305 err = -ENOBUFS;
2306 free_msg:
2307 nlmsg_free(msg);
2308 return err;
2309 }
2310
2311 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2312 {
2313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2314 struct key_parse key;
2315 int err;
2316 struct net_device *dev = info->user_ptr[1];
2317
2318 err = nl80211_parse_key(info, &key);
2319 if (err)
2320 return err;
2321
2322 if (key.idx < 0)
2323 return -EINVAL;
2324
2325 /* only support setting default key */
2326 if (!key.def && !key.defmgmt)
2327 return -EINVAL;
2328
2329 wdev_lock(dev->ieee80211_ptr);
2330
2331 if (key.def) {
2332 if (!rdev->ops->set_default_key) {
2333 err = -EOPNOTSUPP;
2334 goto out;
2335 }
2336
2337 err = nl80211_key_allowed(dev->ieee80211_ptr);
2338 if (err)
2339 goto out;
2340
2341 err = rdev_set_default_key(rdev, dev, key.idx,
2342 key.def_uni, key.def_multi);
2343
2344 if (err)
2345 goto out;
2346
2347 #ifdef CONFIG_CFG80211_WEXT
2348 dev->ieee80211_ptr->wext.default_key = key.idx;
2349 #endif
2350 } else {
2351 if (key.def_uni || !key.def_multi) {
2352 err = -EINVAL;
2353 goto out;
2354 }
2355
2356 if (!rdev->ops->set_default_mgmt_key) {
2357 err = -EOPNOTSUPP;
2358 goto out;
2359 }
2360
2361 err = nl80211_key_allowed(dev->ieee80211_ptr);
2362 if (err)
2363 goto out;
2364
2365 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2366 if (err)
2367 goto out;
2368
2369 #ifdef CONFIG_CFG80211_WEXT
2370 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2371 #endif
2372 }
2373
2374 out:
2375 wdev_unlock(dev->ieee80211_ptr);
2376
2377 return err;
2378 }
2379
2380 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2381 {
2382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2383 int err;
2384 struct net_device *dev = info->user_ptr[1];
2385 struct key_parse key;
2386 const u8 *mac_addr = NULL;
2387
2388 err = nl80211_parse_key(info, &key);
2389 if (err)
2390 return err;
2391
2392 if (!key.p.key)
2393 return -EINVAL;
2394
2395 if (info->attrs[NL80211_ATTR_MAC])
2396 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2397
2398 if (key.type == -1) {
2399 if (mac_addr)
2400 key.type = NL80211_KEYTYPE_PAIRWISE;
2401 else
2402 key.type = NL80211_KEYTYPE_GROUP;
2403 }
2404
2405 /* for now */
2406 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2407 key.type != NL80211_KEYTYPE_GROUP)
2408 return -EINVAL;
2409
2410 if (!rdev->ops->add_key)
2411 return -EOPNOTSUPP;
2412
2413 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2414 key.type == NL80211_KEYTYPE_PAIRWISE,
2415 mac_addr))
2416 return -EINVAL;
2417
2418 wdev_lock(dev->ieee80211_ptr);
2419 err = nl80211_key_allowed(dev->ieee80211_ptr);
2420 if (!err)
2421 err = rdev_add_key(rdev, dev, key.idx,
2422 key.type == NL80211_KEYTYPE_PAIRWISE,
2423 mac_addr, &key.p);
2424 wdev_unlock(dev->ieee80211_ptr);
2425
2426 return err;
2427 }
2428
2429 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2430 {
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 int err;
2433 struct net_device *dev = info->user_ptr[1];
2434 u8 *mac_addr = NULL;
2435 struct key_parse key;
2436
2437 err = nl80211_parse_key(info, &key);
2438 if (err)
2439 return err;
2440
2441 if (info->attrs[NL80211_ATTR_MAC])
2442 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2443
2444 if (key.type == -1) {
2445 if (mac_addr)
2446 key.type = NL80211_KEYTYPE_PAIRWISE;
2447 else
2448 key.type = NL80211_KEYTYPE_GROUP;
2449 }
2450
2451 /* for now */
2452 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2453 key.type != NL80211_KEYTYPE_GROUP)
2454 return -EINVAL;
2455
2456 if (!rdev->ops->del_key)
2457 return -EOPNOTSUPP;
2458
2459 wdev_lock(dev->ieee80211_ptr);
2460 err = nl80211_key_allowed(dev->ieee80211_ptr);
2461
2462 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2463 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2464 err = -ENOENT;
2465
2466 if (!err)
2467 err = rdev_del_key(rdev, dev, key.idx,
2468 key.type == NL80211_KEYTYPE_PAIRWISE,
2469 mac_addr);
2470
2471 #ifdef CONFIG_CFG80211_WEXT
2472 if (!err) {
2473 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2474 dev->ieee80211_ptr->wext.default_key = -1;
2475 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2476 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2477 }
2478 #endif
2479 wdev_unlock(dev->ieee80211_ptr);
2480
2481 return err;
2482 }
2483
2484 static int nl80211_parse_beacon(struct genl_info *info,
2485 struct cfg80211_beacon_data *bcn)
2486 {
2487 bool haveinfo = false;
2488
2489 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2490 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2491 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2492 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2493 return -EINVAL;
2494
2495 memset(bcn, 0, sizeof(*bcn));
2496
2497 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2498 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2499 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2500 if (!bcn->head_len)
2501 return -EINVAL;
2502 haveinfo = true;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2506 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2507 bcn->tail_len =
2508 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2509 haveinfo = true;
2510 }
2511
2512 if (!haveinfo)
2513 return -EINVAL;
2514
2515 if (info->attrs[NL80211_ATTR_IE]) {
2516 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2517 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2518 }
2519
2520 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2521 bcn->proberesp_ies =
2522 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2523 bcn->proberesp_ies_len =
2524 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2525 }
2526
2527 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2528 bcn->assocresp_ies =
2529 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2530 bcn->assocresp_ies_len =
2531 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2532 }
2533
2534 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2535 bcn->probe_resp =
2536 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2537 bcn->probe_resp_len =
2538 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2539 }
2540
2541 return 0;
2542 }
2543
2544 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2545 struct cfg80211_ap_settings *params)
2546 {
2547 struct wireless_dev *wdev;
2548 bool ret = false;
2549
2550 mutex_lock(&rdev->devlist_mtx);
2551
2552 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2553 if (wdev->iftype != NL80211_IFTYPE_AP &&
2554 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2555 continue;
2556
2557 if (!wdev->preset_chandef.chan)
2558 continue;
2559
2560 params->chandef = wdev->preset_chandef;
2561 ret = true;
2562 break;
2563 }
2564
2565 mutex_unlock(&rdev->devlist_mtx);
2566
2567 return ret;
2568 }
2569
2570 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2571 enum nl80211_auth_type auth_type,
2572 enum nl80211_commands cmd)
2573 {
2574 if (auth_type > NL80211_AUTHTYPE_MAX)
2575 return false;
2576
2577 switch (cmd) {
2578 case NL80211_CMD_AUTHENTICATE:
2579 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2580 auth_type == NL80211_AUTHTYPE_SAE)
2581 return false;
2582 return true;
2583 case NL80211_CMD_CONNECT:
2584 case NL80211_CMD_START_AP:
2585 /* SAE not supported yet */
2586 if (auth_type == NL80211_AUTHTYPE_SAE)
2587 return false;
2588 return true;
2589 default:
2590 return false;
2591 }
2592 }
2593
2594 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2595 {
2596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2597 struct net_device *dev = info->user_ptr[1];
2598 struct wireless_dev *wdev = dev->ieee80211_ptr;
2599 struct cfg80211_ap_settings params;
2600 int err;
2601
2602 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2603 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2604 return -EOPNOTSUPP;
2605
2606 if (!rdev->ops->start_ap)
2607 return -EOPNOTSUPP;
2608
2609 if (wdev->beacon_interval)
2610 return -EALREADY;
2611
2612 memset(&params, 0, sizeof(params));
2613
2614 /* these are required for START_AP */
2615 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2616 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2617 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2618 return -EINVAL;
2619
2620 err = nl80211_parse_beacon(info, &params.beacon);
2621 if (err)
2622 return err;
2623
2624 params.beacon_interval =
2625 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2626 params.dtim_period =
2627 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2628
2629 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2630 if (err)
2631 return err;
2632
2633 /*
2634 * In theory, some of these attributes should be required here
2635 * but since they were not used when the command was originally
2636 * added, keep them optional for old user space programs to let
2637 * them continue to work with drivers that do not need the
2638 * additional information -- drivers must check!
2639 */
2640 if (info->attrs[NL80211_ATTR_SSID]) {
2641 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2642 params.ssid_len =
2643 nla_len(info->attrs[NL80211_ATTR_SSID]);
2644 if (params.ssid_len == 0 ||
2645 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2646 return -EINVAL;
2647 }
2648
2649 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2650 params.hidden_ssid = nla_get_u32(
2651 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2652 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2653 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2654 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2655 return -EINVAL;
2656 }
2657
2658 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2659
2660 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2661 params.auth_type = nla_get_u32(
2662 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2663 if (!nl80211_valid_auth_type(rdev, params.auth_type,
2664 NL80211_CMD_START_AP))
2665 return -EINVAL;
2666 } else
2667 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2668
2669 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2670 NL80211_MAX_NR_CIPHER_SUITES);
2671 if (err)
2672 return err;
2673
2674 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2675 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2676 return -EOPNOTSUPP;
2677 params.inactivity_timeout = nla_get_u16(
2678 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2679 }
2680
2681 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
2682 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2683 return -EINVAL;
2684 params.p2p_ctwindow =
2685 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
2686 if (params.p2p_ctwindow > 127)
2687 return -EINVAL;
2688 if (params.p2p_ctwindow != 0 &&
2689 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
2690 return -EINVAL;
2691 }
2692
2693 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
2694 u8 tmp;
2695
2696 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2697 return -EINVAL;
2698 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
2699 if (tmp > 1)
2700 return -EINVAL;
2701 params.p2p_opp_ps = tmp;
2702 if (params.p2p_opp_ps != 0 &&
2703 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
2704 return -EINVAL;
2705 }
2706
2707 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2708 err = nl80211_parse_chandef(rdev, info, &params.chandef);
2709 if (err)
2710 return err;
2711 } else if (wdev->preset_chandef.chan) {
2712 params.chandef = wdev->preset_chandef;
2713 } else if (!nl80211_get_ap_channel(rdev, &params))
2714 return -EINVAL;
2715
2716 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
2717 return -EINVAL;
2718
2719 mutex_lock(&rdev->devlist_mtx);
2720 err = cfg80211_can_use_chan(rdev, wdev, params.chandef.chan,
2721 CHAN_MODE_SHARED);
2722 mutex_unlock(&rdev->devlist_mtx);
2723
2724 if (err)
2725 return err;
2726
2727 err = rdev_start_ap(rdev, dev, &params);
2728 if (!err) {
2729 wdev->preset_chandef = params.chandef;
2730 wdev->beacon_interval = params.beacon_interval;
2731 wdev->channel = params.chandef.chan;
2732 wdev->ssid_len = params.ssid_len;
2733 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
2734 }
2735 return err;
2736 }
2737
2738 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2739 {
2740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741 struct net_device *dev = info->user_ptr[1];
2742 struct wireless_dev *wdev = dev->ieee80211_ptr;
2743 struct cfg80211_beacon_data params;
2744 int err;
2745
2746 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2747 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2748 return -EOPNOTSUPP;
2749
2750 if (!rdev->ops->change_beacon)
2751 return -EOPNOTSUPP;
2752
2753 if (!wdev->beacon_interval)
2754 return -EINVAL;
2755
2756 err = nl80211_parse_beacon(info, &params);
2757 if (err)
2758 return err;
2759
2760 return rdev_change_beacon(rdev, dev, &params);
2761 }
2762
2763 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2764 {
2765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2766 struct net_device *dev = info->user_ptr[1];
2767
2768 return cfg80211_stop_ap(rdev, dev);
2769 }
2770
2771 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2772 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2773 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2774 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2775 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2776 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2777 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2778 };
2779
2780 static int parse_station_flags(struct genl_info *info,
2781 enum nl80211_iftype iftype,
2782 struct station_parameters *params)
2783 {
2784 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2785 struct nlattr *nla;
2786 int flag;
2787
2788 /*
2789 * Try parsing the new attribute first so userspace
2790 * can specify both for older kernels.
2791 */
2792 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2793 if (nla) {
2794 struct nl80211_sta_flag_update *sta_flags;
2795
2796 sta_flags = nla_data(nla);
2797 params->sta_flags_mask = sta_flags->mask;
2798 params->sta_flags_set = sta_flags->set;
2799 if ((params->sta_flags_mask |
2800 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2801 return -EINVAL;
2802 return 0;
2803 }
2804
2805 /* if present, parse the old attribute */
2806
2807 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2808 if (!nla)
2809 return 0;
2810
2811 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2812 nla, sta_flags_policy))
2813 return -EINVAL;
2814
2815 /*
2816 * Only allow certain flags for interface types so that
2817 * other attributes are silently ignored. Remember that
2818 * this is backward compatibility code with old userspace
2819 * and shouldn't be hit in other cases anyway.
2820 */
2821 switch (iftype) {
2822 case NL80211_IFTYPE_AP:
2823 case NL80211_IFTYPE_AP_VLAN:
2824 case NL80211_IFTYPE_P2P_GO:
2825 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2826 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2827 BIT(NL80211_STA_FLAG_WME) |
2828 BIT(NL80211_STA_FLAG_MFP);
2829 break;
2830 case NL80211_IFTYPE_P2P_CLIENT:
2831 case NL80211_IFTYPE_STATION:
2832 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2833 BIT(NL80211_STA_FLAG_TDLS_PEER);
2834 break;
2835 case NL80211_IFTYPE_MESH_POINT:
2836 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2837 BIT(NL80211_STA_FLAG_MFP) |
2838 BIT(NL80211_STA_FLAG_AUTHORIZED);
2839 default:
2840 return -EINVAL;
2841 }
2842
2843 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2844 if (flags[flag]) {
2845 params->sta_flags_set |= (1<<flag);
2846
2847 /* no longer support new API additions in old API */
2848 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2849 return -EINVAL;
2850 }
2851 }
2852
2853 return 0;
2854 }
2855
2856 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2857 int attr)
2858 {
2859 struct nlattr *rate;
2860 u32 bitrate;
2861 u16 bitrate_compat;
2862
2863 rate = nla_nest_start(msg, attr);
2864 if (!rate)
2865 return false;
2866
2867 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2868 bitrate = cfg80211_calculate_bitrate(info);
2869 /* report 16-bit bitrate only if we can */
2870 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2871 if (bitrate > 0 &&
2872 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
2873 return false;
2874 if (bitrate_compat > 0 &&
2875 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
2876 return false;
2877
2878 if (info->flags & RATE_INFO_FLAGS_MCS) {
2879 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
2880 return false;
2881 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
2882 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
2883 return false;
2884 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
2885 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
2886 return false;
2887 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
2888 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
2889 return false;
2890 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
2891 return false;
2892 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
2893 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
2894 return false;
2895 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
2896 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
2897 return false;
2898 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
2899 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
2900 return false;
2901 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
2902 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
2903 return false;
2904 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
2905 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
2906 return false;
2907 }
2908
2909 nla_nest_end(msg, rate);
2910 return true;
2911 }
2912
2913 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
2914 int flags,
2915 struct cfg80211_registered_device *rdev,
2916 struct net_device *dev,
2917 const u8 *mac_addr, struct station_info *sinfo)
2918 {
2919 void *hdr;
2920 struct nlattr *sinfoattr, *bss_param;
2921
2922 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
2923 if (!hdr)
2924 return -1;
2925
2926 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2927 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2928 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2929 goto nla_put_failure;
2930
2931 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2932 if (!sinfoattr)
2933 goto nla_put_failure;
2934 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2935 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2936 sinfo->connected_time))
2937 goto nla_put_failure;
2938 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2939 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2940 sinfo->inactive_time))
2941 goto nla_put_failure;
2942 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2943 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2944 sinfo->rx_bytes))
2945 goto nla_put_failure;
2946 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2947 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2948 sinfo->tx_bytes))
2949 goto nla_put_failure;
2950 if ((sinfo->filled & STATION_INFO_LLID) &&
2951 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2952 goto nla_put_failure;
2953 if ((sinfo->filled & STATION_INFO_PLID) &&
2954 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2955 goto nla_put_failure;
2956 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2957 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2958 sinfo->plink_state))
2959 goto nla_put_failure;
2960 switch (rdev->wiphy.signal_type) {
2961 case CFG80211_SIGNAL_TYPE_MBM:
2962 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2963 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2964 sinfo->signal))
2965 goto nla_put_failure;
2966 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2967 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2968 sinfo->signal_avg))
2969 goto nla_put_failure;
2970 break;
2971 default:
2972 break;
2973 }
2974 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2975 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2976 NL80211_STA_INFO_TX_BITRATE))
2977 goto nla_put_failure;
2978 }
2979 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2980 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2981 NL80211_STA_INFO_RX_BITRATE))
2982 goto nla_put_failure;
2983 }
2984 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2985 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2986 sinfo->rx_packets))
2987 goto nla_put_failure;
2988 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2989 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2990 sinfo->tx_packets))
2991 goto nla_put_failure;
2992 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2993 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2994 sinfo->tx_retries))
2995 goto nla_put_failure;
2996 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2997 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2998 sinfo->tx_failed))
2999 goto nla_put_failure;
3000 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3001 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3002 sinfo->beacon_loss_count))
3003 goto nla_put_failure;
3004 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3005 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3006 if (!bss_param)
3007 goto nla_put_failure;
3008
3009 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3010 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3011 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3012 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3013 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3014 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3015 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3016 sinfo->bss_param.dtim_period) ||
3017 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3018 sinfo->bss_param.beacon_interval))
3019 goto nla_put_failure;
3020
3021 nla_nest_end(msg, bss_param);
3022 }
3023 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3024 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3025 sizeof(struct nl80211_sta_flag_update),
3026 &sinfo->sta_flags))
3027 goto nla_put_failure;
3028 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3029 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3030 sinfo->t_offset))
3031 goto nla_put_failure;
3032 nla_nest_end(msg, sinfoattr);
3033
3034 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3035 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3036 sinfo->assoc_req_ies))
3037 goto nla_put_failure;
3038
3039 return genlmsg_end(msg, hdr);
3040
3041 nla_put_failure:
3042 genlmsg_cancel(msg, hdr);
3043 return -EMSGSIZE;
3044 }
3045
3046 static int nl80211_dump_station(struct sk_buff *skb,
3047 struct netlink_callback *cb)
3048 {
3049 struct station_info sinfo;
3050 struct cfg80211_registered_device *dev;
3051 struct net_device *netdev;
3052 u8 mac_addr[ETH_ALEN];
3053 int sta_idx = cb->args[1];
3054 int err;
3055
3056 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3057 if (err)
3058 return err;
3059
3060 if (!dev->ops->dump_station) {
3061 err = -EOPNOTSUPP;
3062 goto out_err;
3063 }
3064
3065 while (1) {
3066 memset(&sinfo, 0, sizeof(sinfo));
3067 err = rdev_dump_station(dev, netdev, sta_idx,
3068 mac_addr, &sinfo);
3069 if (err == -ENOENT)
3070 break;
3071 if (err)
3072 goto out_err;
3073
3074 if (nl80211_send_station(skb,
3075 NETLINK_CB(cb->skb).portid,
3076 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3077 dev, netdev, mac_addr,
3078 &sinfo) < 0)
3079 goto out;
3080
3081 sta_idx++;
3082 }
3083
3084
3085 out:
3086 cb->args[1] = sta_idx;
3087 err = skb->len;
3088 out_err:
3089 nl80211_finish_netdev_dump(dev);
3090
3091 return err;
3092 }
3093
3094 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3095 {
3096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3097 struct net_device *dev = info->user_ptr[1];
3098 struct station_info sinfo;
3099 struct sk_buff *msg;
3100 u8 *mac_addr = NULL;
3101 int err;
3102
3103 memset(&sinfo, 0, sizeof(sinfo));
3104
3105 if (!info->attrs[NL80211_ATTR_MAC])
3106 return -EINVAL;
3107
3108 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3109
3110 if (!rdev->ops->get_station)
3111 return -EOPNOTSUPP;
3112
3113 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3114 if (err)
3115 return err;
3116
3117 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3118 if (!msg)
3119 return -ENOMEM;
3120
3121 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3122 rdev, dev, mac_addr, &sinfo) < 0) {
3123 nlmsg_free(msg);
3124 return -ENOBUFS;
3125 }
3126
3127 return genlmsg_reply(msg, info);
3128 }
3129
3130 /*
3131 * Get vlan interface making sure it is running and on the right wiphy.
3132 */
3133 static struct net_device *get_vlan(struct genl_info *info,
3134 struct cfg80211_registered_device *rdev)
3135 {
3136 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3137 struct net_device *v;
3138 int ret;
3139
3140 if (!vlanattr)
3141 return NULL;
3142
3143 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3144 if (!v)
3145 return ERR_PTR(-ENODEV);
3146
3147 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3148 ret = -EINVAL;
3149 goto error;
3150 }
3151
3152 if (!netif_running(v)) {
3153 ret = -ENETDOWN;
3154 goto error;
3155 }
3156
3157 return v;
3158 error:
3159 dev_put(v);
3160 return ERR_PTR(ret);
3161 }
3162
3163 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3164 {
3165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3166 int err;
3167 struct net_device *dev = info->user_ptr[1];
3168 struct station_parameters params;
3169 u8 *mac_addr = NULL;
3170
3171 memset(&params, 0, sizeof(params));
3172
3173 params.listen_interval = -1;
3174 params.plink_state = -1;
3175
3176 if (info->attrs[NL80211_ATTR_STA_AID])
3177 return -EINVAL;
3178
3179 if (!info->attrs[NL80211_ATTR_MAC])
3180 return -EINVAL;
3181
3182 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3183
3184 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3185 params.supported_rates =
3186 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3187 params.supported_rates_len =
3188 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3189 }
3190
3191 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3192 params.listen_interval =
3193 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3194
3195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3196 params.ht_capa =
3197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3198
3199 if (!rdev->ops->change_station)
3200 return -EOPNOTSUPP;
3201
3202 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3203 return -EINVAL;
3204
3205 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3206 params.plink_action =
3207 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3208
3209 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3210 params.plink_state =
3211 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3212
3213 switch (dev->ieee80211_ptr->iftype) {
3214 case NL80211_IFTYPE_AP:
3215 case NL80211_IFTYPE_AP_VLAN:
3216 case NL80211_IFTYPE_P2P_GO:
3217 /* disallow mesh-specific things */
3218 if (params.plink_action)
3219 return -EINVAL;
3220
3221 /* TDLS can't be set, ... */
3222 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3223 return -EINVAL;
3224 /*
3225 * ... but don't bother the driver with it. This works around
3226 * a hostapd/wpa_supplicant issue -- it always includes the
3227 * TLDS_PEER flag in the mask even for AP mode.
3228 */
3229 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3230
3231 /* accept only the listed bits */
3232 if (params.sta_flags_mask &
3233 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3234 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3235 BIT(NL80211_STA_FLAG_WME) |
3236 BIT(NL80211_STA_FLAG_MFP)))
3237 return -EINVAL;
3238
3239 /* must be last in here for error handling */
3240 params.vlan = get_vlan(info, rdev);
3241 if (IS_ERR(params.vlan))
3242 return PTR_ERR(params.vlan);
3243 break;
3244 case NL80211_IFTYPE_P2P_CLIENT:
3245 case NL80211_IFTYPE_STATION:
3246 /*
3247 * Don't allow userspace to change the TDLS_PEER flag,
3248 * but silently ignore attempts to change it since we
3249 * don't have state here to verify that it doesn't try
3250 * to change the flag.
3251 */
3252 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3253 /* fall through */
3254 case NL80211_IFTYPE_ADHOC:
3255 /* disallow things sta doesn't support */
3256 if (params.plink_action)
3257 return -EINVAL;
3258 if (params.ht_capa)
3259 return -EINVAL;
3260 if (params.listen_interval >= 0)
3261 return -EINVAL;
3262 /* reject any changes other than AUTHORIZED */
3263 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3264 return -EINVAL;
3265 break;
3266 case NL80211_IFTYPE_MESH_POINT:
3267 /* disallow things mesh doesn't support */
3268 if (params.vlan)
3269 return -EINVAL;
3270 if (params.ht_capa)
3271 return -EINVAL;
3272 if (params.listen_interval >= 0)
3273 return -EINVAL;
3274 /*
3275 * No special handling for TDLS here -- the userspace
3276 * mesh code doesn't have this bug.
3277 */
3278 if (params.sta_flags_mask &
3279 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3280 BIT(NL80211_STA_FLAG_MFP) |
3281 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3282 return -EINVAL;
3283 break;
3284 default:
3285 return -EOPNOTSUPP;
3286 }
3287
3288 /* be aware of params.vlan when changing code here */
3289
3290 err = rdev_change_station(rdev, dev, mac_addr, &params);
3291
3292 if (params.vlan)
3293 dev_put(params.vlan);
3294
3295 return err;
3296 }
3297
3298 static struct nla_policy
3299 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3300 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3301 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3302 };
3303
3304 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3305 {
3306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3307 int err;
3308 struct net_device *dev = info->user_ptr[1];
3309 struct station_parameters params;
3310 u8 *mac_addr = NULL;
3311
3312 memset(&params, 0, sizeof(params));
3313
3314 if (!info->attrs[NL80211_ATTR_MAC])
3315 return -EINVAL;
3316
3317 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3318 return -EINVAL;
3319
3320 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3321 return -EINVAL;
3322
3323 if (!info->attrs[NL80211_ATTR_STA_AID])
3324 return -EINVAL;
3325
3326 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3327 params.supported_rates =
3328 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3329 params.supported_rates_len =
3330 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3331 params.listen_interval =
3332 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3333
3334 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3335 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3336 return -EINVAL;
3337
3338 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3339 params.ht_capa =
3340 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3341
3342 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3343 params.vht_capa =
3344 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3345
3346 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3347 params.plink_action =
3348 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3349
3350 if (!rdev->ops->add_station)
3351 return -EOPNOTSUPP;
3352
3353 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3354 return -EINVAL;
3355
3356 switch (dev->ieee80211_ptr->iftype) {
3357 case NL80211_IFTYPE_AP:
3358 case NL80211_IFTYPE_AP_VLAN:
3359 case NL80211_IFTYPE_P2P_GO:
3360 /* parse WME attributes if sta is WME capable */
3361 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3362 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3363 info->attrs[NL80211_ATTR_STA_WME]) {
3364 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3365 struct nlattr *nla;
3366
3367 nla = info->attrs[NL80211_ATTR_STA_WME];
3368 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3369 nl80211_sta_wme_policy);
3370 if (err)
3371 return err;
3372
3373 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3374 params.uapsd_queues =
3375 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3376 if (params.uapsd_queues &
3377 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3378 return -EINVAL;
3379
3380 if (tb[NL80211_STA_WME_MAX_SP])
3381 params.max_sp =
3382 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3383
3384 if (params.max_sp &
3385 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3386 return -EINVAL;
3387
3388 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3389 }
3390 /* TDLS peers cannot be added */
3391 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3392 return -EINVAL;
3393 /* but don't bother the driver with it */
3394 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3395
3396 /* must be last in here for error handling */
3397 params.vlan = get_vlan(info, rdev);
3398 if (IS_ERR(params.vlan))
3399 return PTR_ERR(params.vlan);
3400 break;
3401 case NL80211_IFTYPE_MESH_POINT:
3402 /* TDLS peers cannot be added */
3403 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3404 return -EINVAL;
3405 break;
3406 case NL80211_IFTYPE_STATION:
3407 /* Only TDLS peers can be added */
3408 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3409 return -EINVAL;
3410 /* Can only add if TDLS ... */
3411 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3412 return -EOPNOTSUPP;
3413 /* ... with external setup is supported */
3414 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3415 return -EOPNOTSUPP;
3416 break;
3417 default:
3418 return -EOPNOTSUPP;
3419 }
3420
3421 /* be aware of params.vlan when changing code here */
3422
3423 err = rdev_add_station(rdev, dev, mac_addr, &params);
3424
3425 if (params.vlan)
3426 dev_put(params.vlan);
3427 return err;
3428 }
3429
3430 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3431 {
3432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3433 struct net_device *dev = info->user_ptr[1];
3434 u8 *mac_addr = NULL;
3435
3436 if (info->attrs[NL80211_ATTR_MAC])
3437 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3438
3439 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3440 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3441 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3442 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3443 return -EINVAL;
3444
3445 if (!rdev->ops->del_station)
3446 return -EOPNOTSUPP;
3447
3448 return rdev_del_station(rdev, dev, mac_addr);
3449 }
3450
3451 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
3452 int flags, struct net_device *dev,
3453 u8 *dst, u8 *next_hop,
3454 struct mpath_info *pinfo)
3455 {
3456 void *hdr;
3457 struct nlattr *pinfoattr;
3458
3459 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3460 if (!hdr)
3461 return -1;
3462
3463 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3464 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3465 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3466 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3467 goto nla_put_failure;
3468
3469 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3470 if (!pinfoattr)
3471 goto nla_put_failure;
3472 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3473 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3474 pinfo->frame_qlen))
3475 goto nla_put_failure;
3476 if (((pinfo->filled & MPATH_INFO_SN) &&
3477 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3478 ((pinfo->filled & MPATH_INFO_METRIC) &&
3479 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3480 pinfo->metric)) ||
3481 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3482 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3483 pinfo->exptime)) ||
3484 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3485 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3486 pinfo->flags)) ||
3487 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3488 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3489 pinfo->discovery_timeout)) ||
3490 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3491 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3492 pinfo->discovery_retries)))
3493 goto nla_put_failure;
3494
3495 nla_nest_end(msg, pinfoattr);
3496
3497 return genlmsg_end(msg, hdr);
3498
3499 nla_put_failure:
3500 genlmsg_cancel(msg, hdr);
3501 return -EMSGSIZE;
3502 }
3503
3504 static int nl80211_dump_mpath(struct sk_buff *skb,
3505 struct netlink_callback *cb)
3506 {
3507 struct mpath_info pinfo;
3508 struct cfg80211_registered_device *dev;
3509 struct net_device *netdev;
3510 u8 dst[ETH_ALEN];
3511 u8 next_hop[ETH_ALEN];
3512 int path_idx = cb->args[1];
3513 int err;
3514
3515 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3516 if (err)
3517 return err;
3518
3519 if (!dev->ops->dump_mpath) {
3520 err = -EOPNOTSUPP;
3521 goto out_err;
3522 }
3523
3524 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3525 err = -EOPNOTSUPP;
3526 goto out_err;
3527 }
3528
3529 while (1) {
3530 err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
3531 &pinfo);
3532 if (err == -ENOENT)
3533 break;
3534 if (err)
3535 goto out_err;
3536
3537 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
3538 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3539 netdev, dst, next_hop,
3540 &pinfo) < 0)
3541 goto out;
3542
3543 path_idx++;
3544 }
3545
3546
3547 out:
3548 cb->args[1] = path_idx;
3549 err = skb->len;
3550 out_err:
3551 nl80211_finish_netdev_dump(dev);
3552 return err;
3553 }
3554
3555 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3556 {
3557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3558 int err;
3559 struct net_device *dev = info->user_ptr[1];
3560 struct mpath_info pinfo;
3561 struct sk_buff *msg;
3562 u8 *dst = NULL;
3563 u8 next_hop[ETH_ALEN];
3564
3565 memset(&pinfo, 0, sizeof(pinfo));
3566
3567 if (!info->attrs[NL80211_ATTR_MAC])
3568 return -EINVAL;
3569
3570 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3571
3572 if (!rdev->ops->get_mpath)
3573 return -EOPNOTSUPP;
3574
3575 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3576 return -EOPNOTSUPP;
3577
3578 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
3579 if (err)
3580 return err;
3581
3582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3583 if (!msg)
3584 return -ENOMEM;
3585
3586 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
3587 dev, dst, next_hop, &pinfo) < 0) {
3588 nlmsg_free(msg);
3589 return -ENOBUFS;
3590 }
3591
3592 return genlmsg_reply(msg, info);
3593 }
3594
3595 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3596 {
3597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3598 struct net_device *dev = info->user_ptr[1];
3599 u8 *dst = NULL;
3600 u8 *next_hop = NULL;
3601
3602 if (!info->attrs[NL80211_ATTR_MAC])
3603 return -EINVAL;
3604
3605 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3606 return -EINVAL;
3607
3608 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3609 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3610
3611 if (!rdev->ops->change_mpath)
3612 return -EOPNOTSUPP;
3613
3614 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3615 return -EOPNOTSUPP;
3616
3617 return rdev_change_mpath(rdev, dev, dst, next_hop);
3618 }
3619
3620 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3621 {
3622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3623 struct net_device *dev = info->user_ptr[1];
3624 u8 *dst = NULL;
3625 u8 *next_hop = NULL;
3626
3627 if (!info->attrs[NL80211_ATTR_MAC])
3628 return -EINVAL;
3629
3630 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3631 return -EINVAL;
3632
3633 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3634 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3635
3636 if (!rdev->ops->add_mpath)
3637 return -EOPNOTSUPP;
3638
3639 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3640 return -EOPNOTSUPP;
3641
3642 return rdev_add_mpath(rdev, dev, dst, next_hop);
3643 }
3644
3645 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3646 {
3647 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3648 struct net_device *dev = info->user_ptr[1];
3649 u8 *dst = NULL;
3650
3651 if (info->attrs[NL80211_ATTR_MAC])
3652 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3653
3654 if (!rdev->ops->del_mpath)
3655 return -EOPNOTSUPP;
3656
3657 return rdev_del_mpath(rdev, dev, dst);
3658 }
3659
3660 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3661 {
3662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3663 struct net_device *dev = info->user_ptr[1];
3664 struct bss_parameters params;
3665
3666 memset(&params, 0, sizeof(params));
3667 /* default to not changing parameters */
3668 params.use_cts_prot = -1;
3669 params.use_short_preamble = -1;
3670 params.use_short_slot_time = -1;
3671 params.ap_isolate = -1;
3672 params.ht_opmode = -1;
3673 params.p2p_ctwindow = -1;
3674 params.p2p_opp_ps = -1;
3675
3676 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3677 params.use_cts_prot =
3678 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3679 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3680 params.use_short_preamble =
3681 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3682 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3683 params.use_short_slot_time =
3684 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3685 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3686 params.basic_rates =
3687 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3688 params.basic_rates_len =
3689 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3690 }
3691 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3692 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3693 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3694 params.ht_opmode =
3695 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3696
3697 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3698 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3699 return -EINVAL;
3700 params.p2p_ctwindow =
3701 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3702 if (params.p2p_ctwindow < 0)
3703 return -EINVAL;
3704 if (params.p2p_ctwindow != 0 &&
3705 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3706 return -EINVAL;
3707 }
3708
3709 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3710 u8 tmp;
3711
3712 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3713 return -EINVAL;
3714 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3715 if (tmp > 1)
3716 return -EINVAL;
3717 params.p2p_opp_ps = tmp;
3718 if (params.p2p_opp_ps &&
3719 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3720 return -EINVAL;
3721 }
3722
3723 if (!rdev->ops->change_bss)
3724 return -EOPNOTSUPP;
3725
3726 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3727 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3728 return -EOPNOTSUPP;
3729
3730 return rdev_change_bss(rdev, dev, &params);
3731 }
3732
3733 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3734 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3735 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3736 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3737 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3738 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3739 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3740 };
3741
3742 static int parse_reg_rule(struct nlattr *tb[],
3743 struct ieee80211_reg_rule *reg_rule)
3744 {
3745 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3746 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3747
3748 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3749 return -EINVAL;
3750 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3751 return -EINVAL;
3752 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3753 return -EINVAL;
3754 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3755 return -EINVAL;
3756 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3757 return -EINVAL;
3758
3759 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3760
3761 freq_range->start_freq_khz =
3762 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3763 freq_range->end_freq_khz =
3764 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3765 freq_range->max_bandwidth_khz =
3766 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3767
3768 power_rule->max_eirp =
3769 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3770
3771 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3772 power_rule->max_antenna_gain =
3773 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3774
3775 return 0;
3776 }
3777
3778 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3779 {
3780 int r;
3781 char *data = NULL;
3782 enum nl80211_user_reg_hint_type user_reg_hint_type;
3783
3784 /*
3785 * You should only get this when cfg80211 hasn't yet initialized
3786 * completely when built-in to the kernel right between the time
3787 * window between nl80211_init() and regulatory_init(), if that is
3788 * even possible.
3789 */
3790 mutex_lock(&cfg80211_mutex);
3791 if (unlikely(!cfg80211_regdomain)) {
3792 mutex_unlock(&cfg80211_mutex);
3793 return -EINPROGRESS;
3794 }
3795 mutex_unlock(&cfg80211_mutex);
3796
3797 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3798 return -EINVAL;
3799
3800 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3801
3802 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3803 user_reg_hint_type =
3804 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3805 else
3806 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3807
3808 switch (user_reg_hint_type) {
3809 case NL80211_USER_REG_HINT_USER:
3810 case NL80211_USER_REG_HINT_CELL_BASE:
3811 break;
3812 default:
3813 return -EINVAL;
3814 }
3815
3816 r = regulatory_hint_user(data, user_reg_hint_type);
3817
3818 return r;
3819 }
3820
3821 static int nl80211_get_mesh_config(struct sk_buff *skb,
3822 struct genl_info *info)
3823 {
3824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3825 struct net_device *dev = info->user_ptr[1];
3826 struct wireless_dev *wdev = dev->ieee80211_ptr;
3827 struct mesh_config cur_params;
3828 int err = 0;
3829 void *hdr;
3830 struct nlattr *pinfoattr;
3831 struct sk_buff *msg;
3832
3833 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3834 return -EOPNOTSUPP;
3835
3836 if (!rdev->ops->get_mesh_config)
3837 return -EOPNOTSUPP;
3838
3839 wdev_lock(wdev);
3840 /* If not connected, get default parameters */
3841 if (!wdev->mesh_id_len)
3842 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3843 else
3844 err = rdev_get_mesh_config(rdev, dev, &cur_params);
3845 wdev_unlock(wdev);
3846
3847 if (err)
3848 return err;
3849
3850 /* Draw up a netlink message to send back */
3851 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3852 if (!msg)
3853 return -ENOMEM;
3854 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3855 NL80211_CMD_GET_MESH_CONFIG);
3856 if (!hdr)
3857 goto out;
3858 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3859 if (!pinfoattr)
3860 goto nla_put_failure;
3861 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3862 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3863 cur_params.dot11MeshRetryTimeout) ||
3864 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3865 cur_params.dot11MeshConfirmTimeout) ||
3866 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3867 cur_params.dot11MeshHoldingTimeout) ||
3868 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3869 cur_params.dot11MeshMaxPeerLinks) ||
3870 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3871 cur_params.dot11MeshMaxRetries) ||
3872 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3873 cur_params.dot11MeshTTL) ||
3874 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3875 cur_params.element_ttl) ||
3876 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3877 cur_params.auto_open_plinks) ||
3878 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3879 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3880 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3881 cur_params.dot11MeshHWMPmaxPREQretries) ||
3882 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3883 cur_params.path_refresh_time) ||
3884 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3885 cur_params.min_discovery_timeout) ||
3886 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3887 cur_params.dot11MeshHWMPactivePathTimeout) ||
3888 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3889 cur_params.dot11MeshHWMPpreqMinInterval) ||
3890 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3891 cur_params.dot11MeshHWMPperrMinInterval) ||
3892 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3893 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3894 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3895 cur_params.dot11MeshHWMPRootMode) ||
3896 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3897 cur_params.dot11MeshHWMPRannInterval) ||
3898 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3899 cur_params.dot11MeshGateAnnouncementProtocol) ||
3900 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3901 cur_params.dot11MeshForwarding) ||
3902 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3903 cur_params.rssi_threshold) ||
3904 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3905 cur_params.ht_opmode) ||
3906 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3907 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3908 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3909 cur_params.dot11MeshHWMProotInterval) ||
3910 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3911 cur_params.dot11MeshHWMPconfirmationInterval))
3912 goto nla_put_failure;
3913 nla_nest_end(msg, pinfoattr);
3914 genlmsg_end(msg, hdr);
3915 return genlmsg_reply(msg, info);
3916
3917 nla_put_failure:
3918 genlmsg_cancel(msg, hdr);
3919 out:
3920 nlmsg_free(msg);
3921 return -ENOBUFS;
3922 }
3923
3924 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3925 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3926 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3927 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3928 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3929 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3930 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3931 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3932 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3933 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3934 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3935 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3936 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3937 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3938 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3939 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3940 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3941 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3942 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3943 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3944 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3945 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3946 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3947 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3948 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3949 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3950 };
3951
3952 static const struct nla_policy
3953 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3954 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3955 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3956 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3957 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3958 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3959 .len = IEEE80211_MAX_DATA_LEN },
3960 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3961 };
3962
3963 static int nl80211_parse_mesh_config(struct genl_info *info,
3964 struct mesh_config *cfg,
3965 u32 *mask_out)
3966 {
3967 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3968 u32 mask = 0;
3969
3970 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3971 do {\
3972 if (table[attr_num]) {\
3973 cfg->param = nla_fn(table[attr_num]); \
3974 mask |= (1 << (attr_num - 1)); \
3975 } \
3976 } while (0);\
3977
3978
3979 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3980 return -EINVAL;
3981 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3982 info->attrs[NL80211_ATTR_MESH_CONFIG],
3983 nl80211_meshconf_params_policy))
3984 return -EINVAL;
3985
3986 /* This makes sure that there aren't more than 32 mesh config
3987 * parameters (otherwise our bitfield scheme would not work.) */
3988 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3989
3990 /* Fill in the params struct */
3991 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3992 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3993 nla_get_u16);
3994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3995 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3996 nla_get_u16);
3997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3998 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3999 nla_get_u16);
4000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
4001 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4002 nla_get_u16);
4003 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
4004 mask, NL80211_MESHCONF_MAX_RETRIES,
4005 nla_get_u8);
4006 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
4007 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
4009 mask, NL80211_MESHCONF_ELEMENT_TTL,
4010 nla_get_u8);
4011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
4012 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4013 nla_get_u8);
4014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
4015 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4016 nla_get_u32);
4017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
4018 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4019 nla_get_u8);
4020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
4021 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4022 nla_get_u32);
4023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
4024 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4025 nla_get_u16);
4026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
4027 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4028 nla_get_u32);
4029 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4030 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4031 nla_get_u16);
4032 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4033 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4034 nla_get_u16);
4035 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4036 dot11MeshHWMPnetDiameterTraversalTime, mask,
4037 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4038 nla_get_u16);
4039 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
4040 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
4041 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
4042 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4043 nla_get_u16);
4044 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4045 dot11MeshGateAnnouncementProtocol, mask,
4046 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4047 nla_get_u8);
4048 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
4049 mask, NL80211_MESHCONF_FORWARDING,
4050 nla_get_u8);
4051 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
4052 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4053 nla_get_u32);
4054 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
4055 mask, NL80211_MESHCONF_HT_OPMODE,
4056 nla_get_u16);
4057 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4058 mask,
4059 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4060 nla_get_u32);
4061 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
4062 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4063 nla_get_u16);
4064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4065 dot11MeshHWMPconfirmationInterval, mask,
4066 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4067 nla_get_u16);
4068 if (mask_out)
4069 *mask_out = mask;
4070
4071 return 0;
4072
4073 #undef FILL_IN_MESH_PARAM_IF_SET
4074 }
4075
4076 static int nl80211_parse_mesh_setup(struct genl_info *info,
4077 struct mesh_setup *setup)
4078 {
4079 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4080
4081 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4082 return -EINVAL;
4083 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4084 info->attrs[NL80211_ATTR_MESH_SETUP],
4085 nl80211_mesh_setup_params_policy))
4086 return -EINVAL;
4087
4088 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4089 setup->sync_method =
4090 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4091 IEEE80211_SYNC_METHOD_VENDOR :
4092 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4093
4094 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4095 setup->path_sel_proto =
4096 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4097 IEEE80211_PATH_PROTOCOL_VENDOR :
4098 IEEE80211_PATH_PROTOCOL_HWMP;
4099
4100 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4101 setup->path_metric =
4102 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4103 IEEE80211_PATH_METRIC_VENDOR :
4104 IEEE80211_PATH_METRIC_AIRTIME;
4105
4106
4107 if (tb[NL80211_MESH_SETUP_IE]) {
4108 struct nlattr *ieattr =
4109 tb[NL80211_MESH_SETUP_IE];
4110 if (!is_valid_ie_attr(ieattr))
4111 return -EINVAL;
4112 setup->ie = nla_data(ieattr);
4113 setup->ie_len = nla_len(ieattr);
4114 }
4115 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4116 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4117
4118 return 0;
4119 }
4120
4121 static int nl80211_update_mesh_config(struct sk_buff *skb,
4122 struct genl_info *info)
4123 {
4124 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4125 struct net_device *dev = info->user_ptr[1];
4126 struct wireless_dev *wdev = dev->ieee80211_ptr;
4127 struct mesh_config cfg;
4128 u32 mask;
4129 int err;
4130
4131 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4132 return -EOPNOTSUPP;
4133
4134 if (!rdev->ops->update_mesh_config)
4135 return -EOPNOTSUPP;
4136
4137 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4138 if (err)
4139 return err;
4140
4141 wdev_lock(wdev);
4142 if (!wdev->mesh_id_len)
4143 err = -ENOLINK;
4144
4145 if (!err)
4146 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4147
4148 wdev_unlock(wdev);
4149
4150 return err;
4151 }
4152
4153 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4154 {
4155 struct sk_buff *msg;
4156 void *hdr = NULL;
4157 struct nlattr *nl_reg_rules;
4158 unsigned int i;
4159 int err = -EINVAL;
4160
4161 mutex_lock(&cfg80211_mutex);
4162
4163 if (!cfg80211_regdomain)
4164 goto out;
4165
4166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4167 if (!msg) {
4168 err = -ENOBUFS;
4169 goto out;
4170 }
4171
4172 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4173 NL80211_CMD_GET_REG);
4174 if (!hdr)
4175 goto put_failure;
4176
4177 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4178 cfg80211_regdomain->alpha2) ||
4179 (cfg80211_regdomain->dfs_region &&
4180 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4181 cfg80211_regdomain->dfs_region)))
4182 goto nla_put_failure;
4183
4184 if (reg_last_request_cell_base() &&
4185 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4186 NL80211_USER_REG_HINT_CELL_BASE))
4187 goto nla_put_failure;
4188
4189 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4190 if (!nl_reg_rules)
4191 goto nla_put_failure;
4192
4193 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4194 struct nlattr *nl_reg_rule;
4195 const struct ieee80211_reg_rule *reg_rule;
4196 const struct ieee80211_freq_range *freq_range;
4197 const struct ieee80211_power_rule *power_rule;
4198
4199 reg_rule = &cfg80211_regdomain->reg_rules[i];
4200 freq_range = &reg_rule->freq_range;
4201 power_rule = &reg_rule->power_rule;
4202
4203 nl_reg_rule = nla_nest_start(msg, i);
4204 if (!nl_reg_rule)
4205 goto nla_put_failure;
4206
4207 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4208 reg_rule->flags) ||
4209 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4210 freq_range->start_freq_khz) ||
4211 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4212 freq_range->end_freq_khz) ||
4213 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4214 freq_range->max_bandwidth_khz) ||
4215 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4216 power_rule->max_antenna_gain) ||
4217 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4218 power_rule->max_eirp))
4219 goto nla_put_failure;
4220
4221 nla_nest_end(msg, nl_reg_rule);
4222 }
4223
4224 nla_nest_end(msg, nl_reg_rules);
4225
4226 genlmsg_end(msg, hdr);
4227 err = genlmsg_reply(msg, info);
4228 goto out;
4229
4230 nla_put_failure:
4231 genlmsg_cancel(msg, hdr);
4232 put_failure:
4233 nlmsg_free(msg);
4234 err = -EMSGSIZE;
4235 out:
4236 mutex_unlock(&cfg80211_mutex);
4237 return err;
4238 }
4239
4240 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4241 {
4242 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4243 struct nlattr *nl_reg_rule;
4244 char *alpha2 = NULL;
4245 int rem_reg_rules = 0, r = 0;
4246 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4247 u8 dfs_region = 0;
4248 struct ieee80211_regdomain *rd = NULL;
4249
4250 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4251 return -EINVAL;
4252
4253 if (!info->attrs[NL80211_ATTR_REG_RULES])
4254 return -EINVAL;
4255
4256 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4257
4258 if (info->attrs[NL80211_ATTR_DFS_REGION])
4259 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4260
4261 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4262 rem_reg_rules) {
4263 num_rules++;
4264 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4265 return -EINVAL;
4266 }
4267
4268 mutex_lock(&cfg80211_mutex);
4269
4270 if (!reg_is_valid_request(alpha2)) {
4271 r = -EINVAL;
4272 goto bad_reg;
4273 }
4274
4275 size_of_regd = sizeof(struct ieee80211_regdomain) +
4276 num_rules * sizeof(struct ieee80211_reg_rule);
4277
4278 rd = kzalloc(size_of_regd, GFP_KERNEL);
4279 if (!rd) {
4280 r = -ENOMEM;
4281 goto bad_reg;
4282 }
4283
4284 rd->n_reg_rules = num_rules;
4285 rd->alpha2[0] = alpha2[0];
4286 rd->alpha2[1] = alpha2[1];
4287
4288 /*
4289 * Disable DFS master mode if the DFS region was
4290 * not supported or known on this kernel.
4291 */
4292 if (reg_supported_dfs_region(dfs_region))
4293 rd->dfs_region = dfs_region;
4294
4295 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4296 rem_reg_rules) {
4297 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4298 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4299 reg_rule_policy);
4300 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4301 if (r)
4302 goto bad_reg;
4303
4304 rule_idx++;
4305
4306 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4307 r = -EINVAL;
4308 goto bad_reg;
4309 }
4310 }
4311
4312 BUG_ON(rule_idx != num_rules);
4313
4314 r = set_regdom(rd);
4315 rd = NULL;
4316
4317 bad_reg:
4318 mutex_unlock(&cfg80211_mutex);
4319 kfree(rd);
4320 return r;
4321 }
4322
4323 static int validate_scan_freqs(struct nlattr *freqs)
4324 {
4325 struct nlattr *attr1, *attr2;
4326 int n_channels = 0, tmp1, tmp2;
4327
4328 nla_for_each_nested(attr1, freqs, tmp1) {
4329 n_channels++;
4330 /*
4331 * Some hardware has a limited channel list for
4332 * scanning, and it is pretty much nonsensical
4333 * to scan for a channel twice, so disallow that
4334 * and don't require drivers to check that the
4335 * channel list they get isn't longer than what
4336 * they can scan, as long as they can scan all
4337 * the channels they registered at once.
4338 */
4339 nla_for_each_nested(attr2, freqs, tmp2)
4340 if (attr1 != attr2 &&
4341 nla_get_u32(attr1) == nla_get_u32(attr2))
4342 return 0;
4343 }
4344
4345 return n_channels;
4346 }
4347
4348 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4349 {
4350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4351 struct wireless_dev *wdev = info->user_ptr[1];
4352 struct cfg80211_scan_request *request;
4353 struct nlattr *attr;
4354 struct wiphy *wiphy;
4355 int err, tmp, n_ssids = 0, n_channels, i;
4356 size_t ie_len;
4357
4358 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4359 return -EINVAL;
4360
4361 wiphy = &rdev->wiphy;
4362
4363 if (!rdev->ops->scan)
4364 return -EOPNOTSUPP;
4365
4366 if (rdev->scan_req)
4367 return -EBUSY;
4368
4369 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4370 n_channels = validate_scan_freqs(
4371 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4372 if (!n_channels)
4373 return -EINVAL;
4374 } else {
4375 enum ieee80211_band band;
4376 n_channels = 0;
4377
4378 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4379 if (wiphy->bands[band])
4380 n_channels += wiphy->bands[band]->n_channels;
4381 }
4382
4383 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4384 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4385 n_ssids++;
4386
4387 if (n_ssids > wiphy->max_scan_ssids)
4388 return -EINVAL;
4389
4390 if (info->attrs[NL80211_ATTR_IE])
4391 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4392 else
4393 ie_len = 0;
4394
4395 if (ie_len > wiphy->max_scan_ie_len)
4396 return -EINVAL;
4397
4398 request = kzalloc(sizeof(*request)
4399 + sizeof(*request->ssids) * n_ssids
4400 + sizeof(*request->channels) * n_channels
4401 + ie_len, GFP_KERNEL);
4402 if (!request)
4403 return -ENOMEM;
4404
4405 if (n_ssids)
4406 request->ssids = (void *)&request->channels[n_channels];
4407 request->n_ssids = n_ssids;
4408 if (ie_len) {
4409 if (request->ssids)
4410 request->ie = (void *)(request->ssids + n_ssids);
4411 else
4412 request->ie = (void *)(request->channels + n_channels);
4413 }
4414
4415 i = 0;
4416 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4417 /* user specified, bail out if channel not found */
4418 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4419 struct ieee80211_channel *chan;
4420
4421 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4422
4423 if (!chan) {
4424 err = -EINVAL;
4425 goto out_free;
4426 }
4427
4428 /* ignore disabled channels */
4429 if (chan->flags & IEEE80211_CHAN_DISABLED)
4430 continue;
4431
4432 request->channels[i] = chan;
4433 i++;
4434 }
4435 } else {
4436 enum ieee80211_band band;
4437
4438 /* all channels */
4439 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4440 int j;
4441 if (!wiphy->bands[band])
4442 continue;
4443 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4444 struct ieee80211_channel *chan;
4445
4446 chan = &wiphy->bands[band]->channels[j];
4447
4448 if (chan->flags & IEEE80211_CHAN_DISABLED)
4449 continue;
4450
4451 request->channels[i] = chan;
4452 i++;
4453 }
4454 }
4455 }
4456
4457 if (!i) {
4458 err = -EINVAL;
4459 goto out_free;
4460 }
4461
4462 request->n_channels = i;
4463
4464 i = 0;
4465 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4466 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4467 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4468 err = -EINVAL;
4469 goto out_free;
4470 }
4471 request->ssids[i].ssid_len = nla_len(attr);
4472 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4473 i++;
4474 }
4475 }
4476
4477 if (info->attrs[NL80211_ATTR_IE]) {
4478 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4479 memcpy((void *)request->ie,
4480 nla_data(info->attrs[NL80211_ATTR_IE]),
4481 request->ie_len);
4482 }
4483
4484 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4485 if (wiphy->bands[i])
4486 request->rates[i] =
4487 (1 << wiphy->bands[i]->n_bitrates) - 1;
4488
4489 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4490 nla_for_each_nested(attr,
4491 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4492 tmp) {
4493 enum ieee80211_band band = nla_type(attr);
4494
4495 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4496 err = -EINVAL;
4497 goto out_free;
4498 }
4499 err = ieee80211_get_ratemask(wiphy->bands[band],
4500 nla_data(attr),
4501 nla_len(attr),
4502 &request->rates[band]);
4503 if (err)
4504 goto out_free;
4505 }
4506 }
4507
4508 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4509 request->flags = nla_get_u32(
4510 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4511 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4512 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4513 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4514 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4515 err = -EOPNOTSUPP;
4516 goto out_free;
4517 }
4518 }
4519
4520 request->no_cck =
4521 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4522
4523 request->wdev = wdev;
4524 request->wiphy = &rdev->wiphy;
4525 request->scan_start = jiffies;
4526
4527 rdev->scan_req = request;
4528 err = rdev_scan(rdev, request);
4529
4530 if (!err) {
4531 nl80211_send_scan_start(rdev, wdev);
4532 if (wdev->netdev)
4533 dev_hold(wdev->netdev);
4534 } else {
4535 out_free:
4536 rdev->scan_req = NULL;
4537 kfree(request);
4538 }
4539
4540 return err;
4541 }
4542
4543 static int nl80211_start_sched_scan(struct sk_buff *skb,
4544 struct genl_info *info)
4545 {
4546 struct cfg80211_sched_scan_request *request;
4547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4548 struct net_device *dev = info->user_ptr[1];
4549 struct nlattr *attr;
4550 struct wiphy *wiphy;
4551 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4552 u32 interval;
4553 enum ieee80211_band band;
4554 size_t ie_len;
4555 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4556
4557 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4558 !rdev->ops->sched_scan_start)
4559 return -EOPNOTSUPP;
4560
4561 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4562 return -EINVAL;
4563
4564 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4565 return -EINVAL;
4566
4567 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4568 if (interval == 0)
4569 return -EINVAL;
4570
4571 wiphy = &rdev->wiphy;
4572
4573 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4574 n_channels = validate_scan_freqs(
4575 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4576 if (!n_channels)
4577 return -EINVAL;
4578 } else {
4579 n_channels = 0;
4580
4581 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4582 if (wiphy->bands[band])
4583 n_channels += wiphy->bands[band]->n_channels;
4584 }
4585
4586 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4587 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4588 tmp)
4589 n_ssids++;
4590
4591 if (n_ssids > wiphy->max_sched_scan_ssids)
4592 return -EINVAL;
4593
4594 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4595 nla_for_each_nested(attr,
4596 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4597 tmp)
4598 n_match_sets++;
4599
4600 if (n_match_sets > wiphy->max_match_sets)
4601 return -EINVAL;
4602
4603 if (info->attrs[NL80211_ATTR_IE])
4604 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4605 else
4606 ie_len = 0;
4607
4608 if (ie_len > wiphy->max_sched_scan_ie_len)
4609 return -EINVAL;
4610
4611 mutex_lock(&rdev->sched_scan_mtx);
4612
4613 if (rdev->sched_scan_req) {
4614 err = -EINPROGRESS;
4615 goto out;
4616 }
4617
4618 request = kzalloc(sizeof(*request)
4619 + sizeof(*request->ssids) * n_ssids
4620 + sizeof(*request->match_sets) * n_match_sets
4621 + sizeof(*request->channels) * n_channels
4622 + ie_len, GFP_KERNEL);
4623 if (!request) {
4624 err = -ENOMEM;
4625 goto out;
4626 }
4627
4628 if (n_ssids)
4629 request->ssids = (void *)&request->channels[n_channels];
4630 request->n_ssids = n_ssids;
4631 if (ie_len) {
4632 if (request->ssids)
4633 request->ie = (void *)(request->ssids + n_ssids);
4634 else
4635 request->ie = (void *)(request->channels + n_channels);
4636 }
4637
4638 if (n_match_sets) {
4639 if (request->ie)
4640 request->match_sets = (void *)(request->ie + ie_len);
4641 else if (request->ssids)
4642 request->match_sets =
4643 (void *)(request->ssids + n_ssids);
4644 else
4645 request->match_sets =
4646 (void *)(request->channels + n_channels);
4647 }
4648 request->n_match_sets = n_match_sets;
4649
4650 i = 0;
4651 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4652 /* user specified, bail out if channel not found */
4653 nla_for_each_nested(attr,
4654 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4655 tmp) {
4656 struct ieee80211_channel *chan;
4657
4658 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4659
4660 if (!chan) {
4661 err = -EINVAL;
4662 goto out_free;
4663 }
4664
4665 /* ignore disabled channels */
4666 if (chan->flags & IEEE80211_CHAN_DISABLED)
4667 continue;
4668
4669 request->channels[i] = chan;
4670 i++;
4671 }
4672 } else {
4673 /* all channels */
4674 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4675 int j;
4676 if (!wiphy->bands[band])
4677 continue;
4678 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4679 struct ieee80211_channel *chan;
4680
4681 chan = &wiphy->bands[band]->channels[j];
4682
4683 if (chan->flags & IEEE80211_CHAN_DISABLED)
4684 continue;
4685
4686 request->channels[i] = chan;
4687 i++;
4688 }
4689 }
4690 }
4691
4692 if (!i) {
4693 err = -EINVAL;
4694 goto out_free;
4695 }
4696
4697 request->n_channels = i;
4698
4699 i = 0;
4700 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4701 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4702 tmp) {
4703 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4704 err = -EINVAL;
4705 goto out_free;
4706 }
4707 request->ssids[i].ssid_len = nla_len(attr);
4708 memcpy(request->ssids[i].ssid, nla_data(attr),
4709 nla_len(attr));
4710 i++;
4711 }
4712 }
4713
4714 i = 0;
4715 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4716 nla_for_each_nested(attr,
4717 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4718 tmp) {
4719 struct nlattr *ssid, *rssi;
4720
4721 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4722 nla_data(attr), nla_len(attr),
4723 nl80211_match_policy);
4724 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4725 if (ssid) {
4726 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4727 err = -EINVAL;
4728 goto out_free;
4729 }
4730 memcpy(request->match_sets[i].ssid.ssid,
4731 nla_data(ssid), nla_len(ssid));
4732 request->match_sets[i].ssid.ssid_len =
4733 nla_len(ssid);
4734 }
4735 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4736 if (rssi)
4737 request->rssi_thold = nla_get_u32(rssi);
4738 else
4739 request->rssi_thold =
4740 NL80211_SCAN_RSSI_THOLD_OFF;
4741 i++;
4742 }
4743 }
4744
4745 if (info->attrs[NL80211_ATTR_IE]) {
4746 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4747 memcpy((void *)request->ie,
4748 nla_data(info->attrs[NL80211_ATTR_IE]),
4749 request->ie_len);
4750 }
4751
4752 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4753 request->flags = nla_get_u32(
4754 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4755 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4756 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4757 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4758 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4759 err = -EOPNOTSUPP;
4760 goto out_free;
4761 }
4762 }
4763
4764 request->dev = dev;
4765 request->wiphy = &rdev->wiphy;
4766 request->interval = interval;
4767 request->scan_start = jiffies;
4768
4769 err = rdev_sched_scan_start(rdev, dev, request);
4770 if (!err) {
4771 rdev->sched_scan_req = request;
4772 nl80211_send_sched_scan(rdev, dev,
4773 NL80211_CMD_START_SCHED_SCAN);
4774 goto out;
4775 }
4776
4777 out_free:
4778 kfree(request);
4779 out:
4780 mutex_unlock(&rdev->sched_scan_mtx);
4781 return err;
4782 }
4783
4784 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4785 struct genl_info *info)
4786 {
4787 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4788 int err;
4789
4790 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4791 !rdev->ops->sched_scan_stop)
4792 return -EOPNOTSUPP;
4793
4794 mutex_lock(&rdev->sched_scan_mtx);
4795 err = __cfg80211_stop_sched_scan(rdev, false);
4796 mutex_unlock(&rdev->sched_scan_mtx);
4797
4798 return err;
4799 }
4800
4801 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4802 u32 seq, int flags,
4803 struct cfg80211_registered_device *rdev,
4804 struct wireless_dev *wdev,
4805 struct cfg80211_internal_bss *intbss)
4806 {
4807 struct cfg80211_bss *res = &intbss->pub;
4808 const struct cfg80211_bss_ies *ies;
4809 void *hdr;
4810 struct nlattr *bss;
4811
4812 ASSERT_WDEV_LOCK(wdev);
4813
4814 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
4815 NL80211_CMD_NEW_SCAN_RESULTS);
4816 if (!hdr)
4817 return -1;
4818
4819 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4820
4821 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4822 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4823 goto nla_put_failure;
4824
4825 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4826 if (!bss)
4827 goto nla_put_failure;
4828 if ((!is_zero_ether_addr(res->bssid) &&
4829 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
4830 goto nla_put_failure;
4831
4832 rcu_read_lock();
4833 ies = rcu_dereference(res->ies);
4834 if (ies && ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4835 ies->len, ies->data)) {
4836 rcu_read_unlock();
4837 goto nla_put_failure;
4838 }
4839 ies = rcu_dereference(res->beacon_ies);
4840 if (ies && ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
4841 ies->len, ies->data)) {
4842 rcu_read_unlock();
4843 goto nla_put_failure;
4844 }
4845 rcu_read_unlock();
4846
4847 if (res->tsf &&
4848 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4849 goto nla_put_failure;
4850 if (res->beacon_interval &&
4851 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4852 goto nla_put_failure;
4853 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4854 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4855 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4856 jiffies_to_msecs(jiffies - intbss->ts)))
4857 goto nla_put_failure;
4858
4859 switch (rdev->wiphy.signal_type) {
4860 case CFG80211_SIGNAL_TYPE_MBM:
4861 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4862 goto nla_put_failure;
4863 break;
4864 case CFG80211_SIGNAL_TYPE_UNSPEC:
4865 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4866 goto nla_put_failure;
4867 break;
4868 default:
4869 break;
4870 }
4871
4872 switch (wdev->iftype) {
4873 case NL80211_IFTYPE_P2P_CLIENT:
4874 case NL80211_IFTYPE_STATION:
4875 if (intbss == wdev->current_bss &&
4876 nla_put_u32(msg, NL80211_BSS_STATUS,
4877 NL80211_BSS_STATUS_ASSOCIATED))
4878 goto nla_put_failure;
4879 break;
4880 case NL80211_IFTYPE_ADHOC:
4881 if (intbss == wdev->current_bss &&
4882 nla_put_u32(msg, NL80211_BSS_STATUS,
4883 NL80211_BSS_STATUS_IBSS_JOINED))
4884 goto nla_put_failure;
4885 break;
4886 default:
4887 break;
4888 }
4889
4890 nla_nest_end(msg, bss);
4891
4892 return genlmsg_end(msg, hdr);
4893
4894 nla_put_failure:
4895 genlmsg_cancel(msg, hdr);
4896 return -EMSGSIZE;
4897 }
4898
4899 static int nl80211_dump_scan(struct sk_buff *skb,
4900 struct netlink_callback *cb)
4901 {
4902 struct cfg80211_registered_device *rdev;
4903 struct net_device *dev;
4904 struct cfg80211_internal_bss *scan;
4905 struct wireless_dev *wdev;
4906 int start = cb->args[1], idx = 0;
4907 int err;
4908
4909 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4910 if (err)
4911 return err;
4912
4913 wdev = dev->ieee80211_ptr;
4914
4915 wdev_lock(wdev);
4916 spin_lock_bh(&rdev->bss_lock);
4917 cfg80211_bss_expire(rdev);
4918
4919 cb->seq = rdev->bss_generation;
4920
4921 list_for_each_entry(scan, &rdev->bss_list, list) {
4922 if (++idx <= start)
4923 continue;
4924 if (nl80211_send_bss(skb, cb,
4925 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4926 rdev, wdev, scan) < 0) {
4927 idx--;
4928 break;
4929 }
4930 }
4931
4932 spin_unlock_bh(&rdev->bss_lock);
4933 wdev_unlock(wdev);
4934
4935 cb->args[1] = idx;
4936 nl80211_finish_netdev_dump(rdev);
4937
4938 return skb->len;
4939 }
4940
4941 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
4942 int flags, struct net_device *dev,
4943 struct survey_info *survey)
4944 {
4945 void *hdr;
4946 struct nlattr *infoattr;
4947
4948 hdr = nl80211hdr_put(msg, portid, seq, flags,
4949 NL80211_CMD_NEW_SURVEY_RESULTS);
4950 if (!hdr)
4951 return -ENOMEM;
4952
4953 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4954 goto nla_put_failure;
4955
4956 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4957 if (!infoattr)
4958 goto nla_put_failure;
4959
4960 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4961 survey->channel->center_freq))
4962 goto nla_put_failure;
4963
4964 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4965 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4966 goto nla_put_failure;
4967 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4968 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4969 goto nla_put_failure;
4970 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4971 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4972 survey->channel_time))
4973 goto nla_put_failure;
4974 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4975 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4976 survey->channel_time_busy))
4977 goto nla_put_failure;
4978 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4979 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4980 survey->channel_time_ext_busy))
4981 goto nla_put_failure;
4982 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4983 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4984 survey->channel_time_rx))
4985 goto nla_put_failure;
4986 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4987 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4988 survey->channel_time_tx))
4989 goto nla_put_failure;
4990
4991 nla_nest_end(msg, infoattr);
4992
4993 return genlmsg_end(msg, hdr);
4994
4995 nla_put_failure:
4996 genlmsg_cancel(msg, hdr);
4997 return -EMSGSIZE;
4998 }
4999
5000 static int nl80211_dump_survey(struct sk_buff *skb,
5001 struct netlink_callback *cb)
5002 {
5003 struct survey_info survey;
5004 struct cfg80211_registered_device *dev;
5005 struct net_device *netdev;
5006 int survey_idx = cb->args[1];
5007 int res;
5008
5009 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
5010 if (res)
5011 return res;
5012
5013 if (!dev->ops->dump_survey) {
5014 res = -EOPNOTSUPP;
5015 goto out_err;
5016 }
5017
5018 while (1) {
5019 struct ieee80211_channel *chan;
5020
5021 res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
5022 if (res == -ENOENT)
5023 break;
5024 if (res)
5025 goto out_err;
5026
5027 /* Survey without a channel doesn't make sense */
5028 if (!survey.channel) {
5029 res = -EINVAL;
5030 goto out;
5031 }
5032
5033 chan = ieee80211_get_channel(&dev->wiphy,
5034 survey.channel->center_freq);
5035 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5036 survey_idx++;
5037 continue;
5038 }
5039
5040 if (nl80211_send_survey(skb,
5041 NETLINK_CB(cb->skb).portid,
5042 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5043 netdev,
5044 &survey) < 0)
5045 goto out;
5046 survey_idx++;
5047 }
5048
5049 out:
5050 cb->args[1] = survey_idx;
5051 res = skb->len;
5052 out_err:
5053 nl80211_finish_netdev_dump(dev);
5054 return res;
5055 }
5056
5057 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5058 {
5059 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5060 NL80211_WPA_VERSION_2));
5061 }
5062
5063 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5064 {
5065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5066 struct net_device *dev = info->user_ptr[1];
5067 struct ieee80211_channel *chan;
5068 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5069 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5070 enum nl80211_auth_type auth_type;
5071 struct key_parse key;
5072 bool local_state_change;
5073
5074 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5075 return -EINVAL;
5076
5077 if (!info->attrs[NL80211_ATTR_MAC])
5078 return -EINVAL;
5079
5080 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5081 return -EINVAL;
5082
5083 if (!info->attrs[NL80211_ATTR_SSID])
5084 return -EINVAL;
5085
5086 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5087 return -EINVAL;
5088
5089 err = nl80211_parse_key(info, &key);
5090 if (err)
5091 return err;
5092
5093 if (key.idx >= 0) {
5094 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5095 return -EINVAL;
5096 if (!key.p.key || !key.p.key_len)
5097 return -EINVAL;
5098 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5099 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5100 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5101 key.p.key_len != WLAN_KEY_LEN_WEP104))
5102 return -EINVAL;
5103 if (key.idx > 4)
5104 return -EINVAL;
5105 } else {
5106 key.p.key_len = 0;
5107 key.p.key = NULL;
5108 }
5109
5110 if (key.idx >= 0) {
5111 int i;
5112 bool ok = false;
5113 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5114 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5115 ok = true;
5116 break;
5117 }
5118 }
5119 if (!ok)
5120 return -EINVAL;
5121 }
5122
5123 if (!rdev->ops->auth)
5124 return -EOPNOTSUPP;
5125
5126 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5127 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5128 return -EOPNOTSUPP;
5129
5130 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5131 chan = ieee80211_get_channel(&rdev->wiphy,
5132 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5133 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5134 return -EINVAL;
5135
5136 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5137 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5138
5139 if (info->attrs[NL80211_ATTR_IE]) {
5140 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5141 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5142 }
5143
5144 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5145 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5146 return -EINVAL;
5147
5148 if (auth_type == NL80211_AUTHTYPE_SAE &&
5149 !info->attrs[NL80211_ATTR_SAE_DATA])
5150 return -EINVAL;
5151
5152 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5153 if (auth_type != NL80211_AUTHTYPE_SAE)
5154 return -EINVAL;
5155 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5156 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5157 /* need to include at least Auth Transaction and Status Code */
5158 if (sae_data_len < 4)
5159 return -EINVAL;
5160 }
5161
5162 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5163
5164 /*
5165 * Since we no longer track auth state, ignore
5166 * requests to only change local state.
5167 */
5168 if (local_state_change)
5169 return 0;
5170
5171 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5172 ssid, ssid_len, ie, ie_len,
5173 key.p.key, key.p.key_len, key.idx,
5174 sae_data, sae_data_len);
5175 }
5176
5177 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5178 struct genl_info *info,
5179 struct cfg80211_crypto_settings *settings,
5180 int cipher_limit)
5181 {
5182 memset(settings, 0, sizeof(*settings));
5183
5184 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5185
5186 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5187 u16 proto;
5188 proto = nla_get_u16(
5189 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5190 settings->control_port_ethertype = cpu_to_be16(proto);
5191 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5192 proto != ETH_P_PAE)
5193 return -EINVAL;
5194 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5195 settings->control_port_no_encrypt = true;
5196 } else
5197 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5198
5199 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5200 void *data;
5201 int len, i;
5202
5203 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5204 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5205 settings->n_ciphers_pairwise = len / sizeof(u32);
5206
5207 if (len % sizeof(u32))
5208 return -EINVAL;
5209
5210 if (settings->n_ciphers_pairwise > cipher_limit)
5211 return -EINVAL;
5212
5213 memcpy(settings->ciphers_pairwise, data, len);
5214
5215 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5216 if (!cfg80211_supported_cipher_suite(
5217 &rdev->wiphy,
5218 settings->ciphers_pairwise[i]))
5219 return -EINVAL;
5220 }
5221
5222 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5223 settings->cipher_group =
5224 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5225 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5226 settings->cipher_group))
5227 return -EINVAL;
5228 }
5229
5230 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5231 settings->wpa_versions =
5232 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5233 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5234 return -EINVAL;
5235 }
5236
5237 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5238 void *data;
5239 int len;
5240
5241 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5242 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5243 settings->n_akm_suites = len / sizeof(u32);
5244
5245 if (len % sizeof(u32))
5246 return -EINVAL;
5247
5248 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5249 return -EINVAL;
5250
5251 memcpy(settings->akm_suites, data, len);
5252 }
5253
5254 return 0;
5255 }
5256
5257 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5258 {
5259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5260 struct net_device *dev = info->user_ptr[1];
5261 struct cfg80211_crypto_settings crypto;
5262 struct ieee80211_channel *chan;
5263 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5264 int err, ssid_len, ie_len = 0;
5265 bool use_mfp = false;
5266 u32 flags = 0;
5267 struct ieee80211_ht_cap *ht_capa = NULL;
5268 struct ieee80211_ht_cap *ht_capa_mask = NULL;
5269
5270 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5271 return -EINVAL;
5272
5273 if (!info->attrs[NL80211_ATTR_MAC] ||
5274 !info->attrs[NL80211_ATTR_SSID] ||
5275 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5276 return -EINVAL;
5277
5278 if (!rdev->ops->assoc)
5279 return -EOPNOTSUPP;
5280
5281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5282 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5283 return -EOPNOTSUPP;
5284
5285 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5286
5287 chan = ieee80211_get_channel(&rdev->wiphy,
5288 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5289 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5290 return -EINVAL;
5291
5292 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5293 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5294
5295 if (info->attrs[NL80211_ATTR_IE]) {
5296 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5297 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5298 }
5299
5300 if (info->attrs[NL80211_ATTR_USE_MFP]) {
5301 enum nl80211_mfp mfp =
5302 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5303 if (mfp == NL80211_MFP_REQUIRED)
5304 use_mfp = true;
5305 else if (mfp != NL80211_MFP_NO)
5306 return -EINVAL;
5307 }
5308
5309 if (info->attrs[NL80211_ATTR_PREV_BSSID])
5310 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5311
5312 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5313 flags |= ASSOC_REQ_DISABLE_HT;
5314
5315 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5316 ht_capa_mask =
5317 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5318
5319 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5320 if (!ht_capa_mask)
5321 return -EINVAL;
5322 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5323 }
5324
5325 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5326 if (!err)
5327 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5328 ssid, ssid_len, ie, ie_len, use_mfp,
5329 &crypto, flags, ht_capa,
5330 ht_capa_mask);
5331
5332 return err;
5333 }
5334
5335 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5336 {
5337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5338 struct net_device *dev = info->user_ptr[1];
5339 const u8 *ie = NULL, *bssid;
5340 int ie_len = 0;
5341 u16 reason_code;
5342 bool local_state_change;
5343
5344 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5345 return -EINVAL;
5346
5347 if (!info->attrs[NL80211_ATTR_MAC])
5348 return -EINVAL;
5349
5350 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5351 return -EINVAL;
5352
5353 if (!rdev->ops->deauth)
5354 return -EOPNOTSUPP;
5355
5356 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5357 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5358 return -EOPNOTSUPP;
5359
5360 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5361
5362 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5363 if (reason_code == 0) {
5364 /* Reason Code 0 is reserved */
5365 return -EINVAL;
5366 }
5367
5368 if (info->attrs[NL80211_ATTR_IE]) {
5369 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5370 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5371 }
5372
5373 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5374
5375 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5376 local_state_change);
5377 }
5378
5379 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5380 {
5381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5382 struct net_device *dev = info->user_ptr[1];
5383 const u8 *ie = NULL, *bssid;
5384 int ie_len = 0;
5385 u16 reason_code;
5386 bool local_state_change;
5387
5388 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5389 return -EINVAL;
5390
5391 if (!info->attrs[NL80211_ATTR_MAC])
5392 return -EINVAL;
5393
5394 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5395 return -EINVAL;
5396
5397 if (!rdev->ops->disassoc)
5398 return -EOPNOTSUPP;
5399
5400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5401 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5402 return -EOPNOTSUPP;
5403
5404 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5405
5406 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5407 if (reason_code == 0) {
5408 /* Reason Code 0 is reserved */
5409 return -EINVAL;
5410 }
5411
5412 if (info->attrs[NL80211_ATTR_IE]) {
5413 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5414 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5415 }
5416
5417 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5418
5419 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5420 local_state_change);
5421 }
5422
5423 static bool
5424 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5425 int mcast_rate[IEEE80211_NUM_BANDS],
5426 int rateval)
5427 {
5428 struct wiphy *wiphy = &rdev->wiphy;
5429 bool found = false;
5430 int band, i;
5431
5432 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5433 struct ieee80211_supported_band *sband;
5434
5435 sband = wiphy->bands[band];
5436 if (!sband)
5437 continue;
5438
5439 for (i = 0; i < sband->n_bitrates; i++) {
5440 if (sband->bitrates[i].bitrate == rateval) {
5441 mcast_rate[band] = i + 1;
5442 found = true;
5443 break;
5444 }
5445 }
5446 }
5447
5448 return found;
5449 }
5450
5451 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5452 {
5453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5454 struct net_device *dev = info->user_ptr[1];
5455 struct cfg80211_ibss_params ibss;
5456 struct wiphy *wiphy;
5457 struct cfg80211_cached_keys *connkeys = NULL;
5458 int err;
5459
5460 memset(&ibss, 0, sizeof(ibss));
5461
5462 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5463 return -EINVAL;
5464
5465 if (!info->attrs[NL80211_ATTR_SSID] ||
5466 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5467 return -EINVAL;
5468
5469 ibss.beacon_interval = 100;
5470
5471 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5472 ibss.beacon_interval =
5473 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5474 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5475 return -EINVAL;
5476 }
5477
5478 if (!rdev->ops->join_ibss)
5479 return -EOPNOTSUPP;
5480
5481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5482 return -EOPNOTSUPP;
5483
5484 wiphy = &rdev->wiphy;
5485
5486 if (info->attrs[NL80211_ATTR_MAC]) {
5487 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5488
5489 if (!is_valid_ether_addr(ibss.bssid))
5490 return -EINVAL;
5491 }
5492 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5493 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5494
5495 if (info->attrs[NL80211_ATTR_IE]) {
5496 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5497 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5498 }
5499
5500 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
5501 if (err)
5502 return err;
5503
5504 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
5505 return -EINVAL;
5506
5507 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
5508 return -EINVAL;
5509 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
5510 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
5511 return -EINVAL;
5512
5513 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5514 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5515
5516 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5517 u8 *rates =
5518 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5519 int n_rates =
5520 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5521 struct ieee80211_supported_band *sband =
5522 wiphy->bands[ibss.chandef.chan->band];
5523
5524 err = ieee80211_get_ratemask(sband, rates, n_rates,
5525 &ibss.basic_rates);
5526 if (err)
5527 return err;
5528 }
5529
5530 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5531 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5532 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5533 return -EINVAL;
5534
5535 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5536 bool no_ht = false;
5537
5538 connkeys = nl80211_parse_connkeys(rdev,
5539 info->attrs[NL80211_ATTR_KEYS],
5540 &no_ht);
5541 if (IS_ERR(connkeys))
5542 return PTR_ERR(connkeys);
5543
5544 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
5545 no_ht) {
5546 kfree(connkeys);
5547 return -EINVAL;
5548 }
5549 }
5550
5551 ibss.control_port =
5552 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5553
5554 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5555 if (err)
5556 kfree(connkeys);
5557 return err;
5558 }
5559
5560 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5561 {
5562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5563 struct net_device *dev = info->user_ptr[1];
5564
5565 if (!rdev->ops->leave_ibss)
5566 return -EOPNOTSUPP;
5567
5568 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5569 return -EOPNOTSUPP;
5570
5571 return cfg80211_leave_ibss(rdev, dev, false);
5572 }
5573
5574 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
5575 {
5576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5577 struct net_device *dev = info->user_ptr[1];
5578 int mcast_rate[IEEE80211_NUM_BANDS];
5579 u32 nla_rate;
5580 int err;
5581
5582 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5583 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5584 return -EOPNOTSUPP;
5585
5586 if (!rdev->ops->set_mcast_rate)
5587 return -EOPNOTSUPP;
5588
5589 memset(mcast_rate, 0, sizeof(mcast_rate));
5590
5591 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
5592 return -EINVAL;
5593
5594 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
5595 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
5596 return -EINVAL;
5597
5598 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
5599
5600 return err;
5601 }
5602
5603
5604 #ifdef CONFIG_NL80211_TESTMODE
5605 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5606 .name = "testmode",
5607 };
5608
5609 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5610 {
5611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5612 int err;
5613
5614 if (!info->attrs[NL80211_ATTR_TESTDATA])
5615 return -EINVAL;
5616
5617 err = -EOPNOTSUPP;
5618 if (rdev->ops->testmode_cmd) {
5619 rdev->testmode_info = info;
5620 err = rdev_testmode_cmd(rdev,
5621 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5622 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5623 rdev->testmode_info = NULL;
5624 }
5625
5626 return err;
5627 }
5628
5629 static int nl80211_testmode_dump(struct sk_buff *skb,
5630 struct netlink_callback *cb)
5631 {
5632 struct cfg80211_registered_device *rdev;
5633 int err;
5634 long phy_idx;
5635 void *data = NULL;
5636 int data_len = 0;
5637
5638 if (cb->args[0]) {
5639 /*
5640 * 0 is a valid index, but not valid for args[0],
5641 * so we need to offset by 1.
5642 */
5643 phy_idx = cb->args[0] - 1;
5644 } else {
5645 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5646 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5647 nl80211_policy);
5648 if (err)
5649 return err;
5650
5651 mutex_lock(&cfg80211_mutex);
5652 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5653 nl80211_fam.attrbuf);
5654 if (IS_ERR(rdev)) {
5655 mutex_unlock(&cfg80211_mutex);
5656 return PTR_ERR(rdev);
5657 }
5658 phy_idx = rdev->wiphy_idx;
5659 rdev = NULL;
5660 mutex_unlock(&cfg80211_mutex);
5661
5662 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5663 cb->args[1] =
5664 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5665 }
5666
5667 if (cb->args[1]) {
5668 data = nla_data((void *)cb->args[1]);
5669 data_len = nla_len((void *)cb->args[1]);
5670 }
5671
5672 mutex_lock(&cfg80211_mutex);
5673 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5674 if (!rdev) {
5675 mutex_unlock(&cfg80211_mutex);
5676 return -ENOENT;
5677 }
5678 cfg80211_lock_rdev(rdev);
5679 mutex_unlock(&cfg80211_mutex);
5680
5681 if (!rdev->ops->testmode_dump) {
5682 err = -EOPNOTSUPP;
5683 goto out_err;
5684 }
5685
5686 while (1) {
5687 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
5688 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5689 NL80211_CMD_TESTMODE);
5690 struct nlattr *tmdata;
5691
5692 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5693 genlmsg_cancel(skb, hdr);
5694 break;
5695 }
5696
5697 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5698 if (!tmdata) {
5699 genlmsg_cancel(skb, hdr);
5700 break;
5701 }
5702 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
5703 nla_nest_end(skb, tmdata);
5704
5705 if (err == -ENOBUFS || err == -ENOENT) {
5706 genlmsg_cancel(skb, hdr);
5707 break;
5708 } else if (err) {
5709 genlmsg_cancel(skb, hdr);
5710 goto out_err;
5711 }
5712
5713 genlmsg_end(skb, hdr);
5714 }
5715
5716 err = skb->len;
5717 /* see above */
5718 cb->args[0] = phy_idx + 1;
5719 out_err:
5720 cfg80211_unlock_rdev(rdev);
5721 return err;
5722 }
5723
5724 static struct sk_buff *
5725 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5726 int approxlen, u32 portid, u32 seq, gfp_t gfp)
5727 {
5728 struct sk_buff *skb;
5729 void *hdr;
5730 struct nlattr *data;
5731
5732 skb = nlmsg_new(approxlen + 100, gfp);
5733 if (!skb)
5734 return NULL;
5735
5736 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
5737 if (!hdr) {
5738 kfree_skb(skb);
5739 return NULL;
5740 }
5741
5742 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5743 goto nla_put_failure;
5744 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5745
5746 ((void **)skb->cb)[0] = rdev;
5747 ((void **)skb->cb)[1] = hdr;
5748 ((void **)skb->cb)[2] = data;
5749
5750 return skb;
5751
5752 nla_put_failure:
5753 kfree_skb(skb);
5754 return NULL;
5755 }
5756
5757 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5758 int approxlen)
5759 {
5760 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5761
5762 if (WARN_ON(!rdev->testmode_info))
5763 return NULL;
5764
5765 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5766 rdev->testmode_info->snd_portid,
5767 rdev->testmode_info->snd_seq,
5768 GFP_KERNEL);
5769 }
5770 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5771
5772 int cfg80211_testmode_reply(struct sk_buff *skb)
5773 {
5774 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5775 void *hdr = ((void **)skb->cb)[1];
5776 struct nlattr *data = ((void **)skb->cb)[2];
5777
5778 if (WARN_ON(!rdev->testmode_info)) {
5779 kfree_skb(skb);
5780 return -EINVAL;
5781 }
5782
5783 nla_nest_end(skb, data);
5784 genlmsg_end(skb, hdr);
5785 return genlmsg_reply(skb, rdev->testmode_info);
5786 }
5787 EXPORT_SYMBOL(cfg80211_testmode_reply);
5788
5789 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5790 int approxlen, gfp_t gfp)
5791 {
5792 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5793
5794 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5795 }
5796 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5797
5798 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5799 {
5800 void *hdr = ((void **)skb->cb)[1];
5801 struct nlattr *data = ((void **)skb->cb)[2];
5802
5803 nla_nest_end(skb, data);
5804 genlmsg_end(skb, hdr);
5805 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5806 }
5807 EXPORT_SYMBOL(cfg80211_testmode_event);
5808 #endif
5809
5810 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5811 {
5812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5813 struct net_device *dev = info->user_ptr[1];
5814 struct cfg80211_connect_params connect;
5815 struct wiphy *wiphy;
5816 struct cfg80211_cached_keys *connkeys = NULL;
5817 int err;
5818
5819 memset(&connect, 0, sizeof(connect));
5820
5821 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5822 return -EINVAL;
5823
5824 if (!info->attrs[NL80211_ATTR_SSID] ||
5825 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5826 return -EINVAL;
5827
5828 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5829 connect.auth_type =
5830 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5831 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
5832 NL80211_CMD_CONNECT))
5833 return -EINVAL;
5834 } else
5835 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5836
5837 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5838
5839 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5840 NL80211_MAX_NR_CIPHER_SUITES);
5841 if (err)
5842 return err;
5843
5844 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5845 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5846 return -EOPNOTSUPP;
5847
5848 wiphy = &rdev->wiphy;
5849
5850 connect.bg_scan_period = -1;
5851 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5852 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5853 connect.bg_scan_period =
5854 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5855 }
5856
5857 if (info->attrs[NL80211_ATTR_MAC])
5858 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5859 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5860 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5861
5862 if (info->attrs[NL80211_ATTR_IE]) {
5863 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5864 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5865 }
5866
5867 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5868 connect.channel =
5869 ieee80211_get_channel(wiphy,
5870 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5871 if (!connect.channel ||
5872 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5873 return -EINVAL;
5874 }
5875
5876 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5877 connkeys = nl80211_parse_connkeys(rdev,
5878 info->attrs[NL80211_ATTR_KEYS], NULL);
5879 if (IS_ERR(connkeys))
5880 return PTR_ERR(connkeys);
5881 }
5882
5883 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5884 connect.flags |= ASSOC_REQ_DISABLE_HT;
5885
5886 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5887 memcpy(&connect.ht_capa_mask,
5888 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5889 sizeof(connect.ht_capa_mask));
5890
5891 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5892 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5893 kfree(connkeys);
5894 return -EINVAL;
5895 }
5896 memcpy(&connect.ht_capa,
5897 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5898 sizeof(connect.ht_capa));
5899 }
5900
5901 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5902 if (err)
5903 kfree(connkeys);
5904 return err;
5905 }
5906
5907 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5908 {
5909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5910 struct net_device *dev = info->user_ptr[1];
5911 u16 reason;
5912
5913 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5914 reason = WLAN_REASON_DEAUTH_LEAVING;
5915 else
5916 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5917
5918 if (reason == 0)
5919 return -EINVAL;
5920
5921 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5923 return -EOPNOTSUPP;
5924
5925 return cfg80211_disconnect(rdev, dev, reason, true);
5926 }
5927
5928 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5929 {
5930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5931 struct net *net;
5932 int err;
5933 u32 pid;
5934
5935 if (!info->attrs[NL80211_ATTR_PID])
5936 return -EINVAL;
5937
5938 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5939
5940 net = get_net_ns_by_pid(pid);
5941 if (IS_ERR(net))
5942 return PTR_ERR(net);
5943
5944 err = 0;
5945
5946 /* check if anything to do */
5947 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5948 err = cfg80211_switch_netns(rdev, net);
5949
5950 put_net(net);
5951 return err;
5952 }
5953
5954 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5955 {
5956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5957 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5958 struct cfg80211_pmksa *pmksa) = NULL;
5959 struct net_device *dev = info->user_ptr[1];
5960 struct cfg80211_pmksa pmksa;
5961
5962 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5963
5964 if (!info->attrs[NL80211_ATTR_MAC])
5965 return -EINVAL;
5966
5967 if (!info->attrs[NL80211_ATTR_PMKID])
5968 return -EINVAL;
5969
5970 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5971 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5972
5973 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5974 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5975 return -EOPNOTSUPP;
5976
5977 switch (info->genlhdr->cmd) {
5978 case NL80211_CMD_SET_PMKSA:
5979 rdev_ops = rdev->ops->set_pmksa;
5980 break;
5981 case NL80211_CMD_DEL_PMKSA:
5982 rdev_ops = rdev->ops->del_pmksa;
5983 break;
5984 default:
5985 WARN_ON(1);
5986 break;
5987 }
5988
5989 if (!rdev_ops)
5990 return -EOPNOTSUPP;
5991
5992 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5993 }
5994
5995 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5996 {
5997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5998 struct net_device *dev = info->user_ptr[1];
5999
6000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6001 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6002 return -EOPNOTSUPP;
6003
6004 if (!rdev->ops->flush_pmksa)
6005 return -EOPNOTSUPP;
6006
6007 return rdev_flush_pmksa(rdev, dev);
6008 }
6009
6010 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6011 {
6012 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6013 struct net_device *dev = info->user_ptr[1];
6014 u8 action_code, dialog_token;
6015 u16 status_code;
6016 u8 *peer;
6017
6018 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6019 !rdev->ops->tdls_mgmt)
6020 return -EOPNOTSUPP;
6021
6022 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6023 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6024 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6025 !info->attrs[NL80211_ATTR_IE] ||
6026 !info->attrs[NL80211_ATTR_MAC])
6027 return -EINVAL;
6028
6029 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6030 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6031 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6032 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6033
6034 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6035 dialog_token, status_code,
6036 nla_data(info->attrs[NL80211_ATTR_IE]),
6037 nla_len(info->attrs[NL80211_ATTR_IE]));
6038 }
6039
6040 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6041 {
6042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6043 struct net_device *dev = info->user_ptr[1];
6044 enum nl80211_tdls_operation operation;
6045 u8 *peer;
6046
6047 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6048 !rdev->ops->tdls_oper)
6049 return -EOPNOTSUPP;
6050
6051 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6052 !info->attrs[NL80211_ATTR_MAC])
6053 return -EINVAL;
6054
6055 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6056 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6057
6058 return rdev_tdls_oper(rdev, dev, peer, operation);
6059 }
6060
6061 static int nl80211_remain_on_channel(struct sk_buff *skb,
6062 struct genl_info *info)
6063 {
6064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6065 struct wireless_dev *wdev = info->user_ptr[1];
6066 struct cfg80211_chan_def chandef;
6067 struct sk_buff *msg;
6068 void *hdr;
6069 u64 cookie;
6070 u32 duration;
6071 int err;
6072
6073 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6074 !info->attrs[NL80211_ATTR_DURATION])
6075 return -EINVAL;
6076
6077 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6078
6079 if (!rdev->ops->remain_on_channel ||
6080 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6081 return -EOPNOTSUPP;
6082
6083 /*
6084 * We should be on that channel for at least a minimum amount of
6085 * time (10ms) but no longer than the driver supports.
6086 */
6087 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6088 duration > rdev->wiphy.max_remain_on_channel_duration)
6089 return -EINVAL;
6090
6091 err = nl80211_parse_chandef(rdev, info, &chandef);
6092 if (err)
6093 return err;
6094
6095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6096 if (!msg)
6097 return -ENOMEM;
6098
6099 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6100 NL80211_CMD_REMAIN_ON_CHANNEL);
6101
6102 if (IS_ERR(hdr)) {
6103 err = PTR_ERR(hdr);
6104 goto free_msg;
6105 }
6106
6107 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6108 duration, &cookie);
6109
6110 if (err)
6111 goto free_msg;
6112
6113 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6114 goto nla_put_failure;
6115
6116 genlmsg_end(msg, hdr);
6117
6118 return genlmsg_reply(msg, info);
6119
6120 nla_put_failure:
6121 err = -ENOBUFS;
6122 free_msg:
6123 nlmsg_free(msg);
6124 return err;
6125 }
6126
6127 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6128 struct genl_info *info)
6129 {
6130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6131 struct wireless_dev *wdev = info->user_ptr[1];
6132 u64 cookie;
6133
6134 if (!info->attrs[NL80211_ATTR_COOKIE])
6135 return -EINVAL;
6136
6137 if (!rdev->ops->cancel_remain_on_channel)
6138 return -EOPNOTSUPP;
6139
6140 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6141
6142 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6143 }
6144
6145 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6146 u8 *rates, u8 rates_len)
6147 {
6148 u8 i;
6149 u32 mask = 0;
6150
6151 for (i = 0; i < rates_len; i++) {
6152 int rate = (rates[i] & 0x7f) * 5;
6153 int ridx;
6154 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6155 struct ieee80211_rate *srate =
6156 &sband->bitrates[ridx];
6157 if (rate == srate->bitrate) {
6158 mask |= 1 << ridx;
6159 break;
6160 }
6161 }
6162 if (ridx == sband->n_bitrates)
6163 return 0; /* rate not found */
6164 }
6165
6166 return mask;
6167 }
6168
6169 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6170 u8 *rates, u8 rates_len,
6171 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6172 {
6173 u8 i;
6174
6175 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6176
6177 for (i = 0; i < rates_len; i++) {
6178 int ridx, rbit;
6179
6180 ridx = rates[i] / 8;
6181 rbit = BIT(rates[i] % 8);
6182
6183 /* check validity */
6184 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6185 return false;
6186
6187 /* check availability */
6188 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6189 mcs[ridx] |= rbit;
6190 else
6191 return false;
6192 }
6193
6194 return true;
6195 }
6196
6197 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6198 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6199 .len = NL80211_MAX_SUPP_RATES },
6200 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6201 .len = NL80211_MAX_SUPP_HT_RATES },
6202 };
6203
6204 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6205 struct genl_info *info)
6206 {
6207 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6209 struct cfg80211_bitrate_mask mask;
6210 int rem, i;
6211 struct net_device *dev = info->user_ptr[1];
6212 struct nlattr *tx_rates;
6213 struct ieee80211_supported_band *sband;
6214
6215 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
6216 return -EINVAL;
6217
6218 if (!rdev->ops->set_bitrate_mask)
6219 return -EOPNOTSUPP;
6220
6221 memset(&mask, 0, sizeof(mask));
6222 /* Default to all rates enabled */
6223 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
6224 sband = rdev->wiphy.bands[i];
6225 mask.control[i].legacy =
6226 sband ? (1 << sband->n_bitrates) - 1 : 0;
6227 if (sband)
6228 memcpy(mask.control[i].mcs,
6229 sband->ht_cap.mcs.rx_mask,
6230 sizeof(mask.control[i].mcs));
6231 else
6232 memset(mask.control[i].mcs, 0,
6233 sizeof(mask.control[i].mcs));
6234 }
6235
6236 /*
6237 * The nested attribute uses enum nl80211_band as the index. This maps
6238 * directly to the enum ieee80211_band values used in cfg80211.
6239 */
6240 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6241 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6242 {
6243 enum ieee80211_band band = nla_type(tx_rates);
6244 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6245 return -EINVAL;
6246 sband = rdev->wiphy.bands[band];
6247 if (sband == NULL)
6248 return -EINVAL;
6249 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6250 nla_len(tx_rates), nl80211_txattr_policy);
6251 if (tb[NL80211_TXRATE_LEGACY]) {
6252 mask.control[band].legacy = rateset_to_mask(
6253 sband,
6254 nla_data(tb[NL80211_TXRATE_LEGACY]),
6255 nla_len(tb[NL80211_TXRATE_LEGACY]));
6256 if ((mask.control[band].legacy == 0) &&
6257 nla_len(tb[NL80211_TXRATE_LEGACY]))
6258 return -EINVAL;
6259 }
6260 if (tb[NL80211_TXRATE_MCS]) {
6261 if (!ht_rateset_to_mask(
6262 sband,
6263 nla_data(tb[NL80211_TXRATE_MCS]),
6264 nla_len(tb[NL80211_TXRATE_MCS]),
6265 mask.control[band].mcs))
6266 return -EINVAL;
6267 }
6268
6269 if (mask.control[band].legacy == 0) {
6270 /* don't allow empty legacy rates if HT
6271 * is not even supported. */
6272 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6273 return -EINVAL;
6274
6275 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6276 if (mask.control[band].mcs[i])
6277 break;
6278
6279 /* legacy and mcs rates may not be both empty */
6280 if (i == IEEE80211_HT_MCS_MASK_LEN)
6281 return -EINVAL;
6282 }
6283 }
6284
6285 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
6286 }
6287
6288 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6289 {
6290 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6291 struct wireless_dev *wdev = info->user_ptr[1];
6292 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6293
6294 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6295 return -EINVAL;
6296
6297 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6298 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6299
6300 switch (wdev->iftype) {
6301 case NL80211_IFTYPE_STATION:
6302 case NL80211_IFTYPE_ADHOC:
6303 case NL80211_IFTYPE_P2P_CLIENT:
6304 case NL80211_IFTYPE_AP:
6305 case NL80211_IFTYPE_AP_VLAN:
6306 case NL80211_IFTYPE_MESH_POINT:
6307 case NL80211_IFTYPE_P2P_GO:
6308 case NL80211_IFTYPE_P2P_DEVICE:
6309 break;
6310 default:
6311 return -EOPNOTSUPP;
6312 }
6313
6314 /* not much point in registering if we can't reply */
6315 if (!rdev->ops->mgmt_tx)
6316 return -EOPNOTSUPP;
6317
6318 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
6319 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6320 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6321 }
6322
6323 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
6324 {
6325 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6326 struct wireless_dev *wdev = info->user_ptr[1];
6327 struct cfg80211_chan_def chandef;
6328 int err;
6329 void *hdr = NULL;
6330 u64 cookie;
6331 struct sk_buff *msg = NULL;
6332 unsigned int wait = 0;
6333 bool offchan, no_cck, dont_wait_for_ack;
6334
6335 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6336
6337 if (!info->attrs[NL80211_ATTR_FRAME])
6338 return -EINVAL;
6339
6340 if (!rdev->ops->mgmt_tx)
6341 return -EOPNOTSUPP;
6342
6343 switch (wdev->iftype) {
6344 case NL80211_IFTYPE_STATION:
6345 case NL80211_IFTYPE_ADHOC:
6346 case NL80211_IFTYPE_P2P_CLIENT:
6347 case NL80211_IFTYPE_AP:
6348 case NL80211_IFTYPE_AP_VLAN:
6349 case NL80211_IFTYPE_MESH_POINT:
6350 case NL80211_IFTYPE_P2P_GO:
6351 case NL80211_IFTYPE_P2P_DEVICE:
6352 break;
6353 default:
6354 return -EOPNOTSUPP;
6355 }
6356
6357 if (info->attrs[NL80211_ATTR_DURATION]) {
6358 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6359 return -EINVAL;
6360 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6361
6362 /*
6363 * We should wait on the channel for at least a minimum amount
6364 * of time (10ms) but no longer than the driver supports.
6365 */
6366 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6367 wait > rdev->wiphy.max_remain_on_channel_duration)
6368 return -EINVAL;
6369
6370 }
6371
6372 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6373
6374 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6375 return -EINVAL;
6376
6377 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6378
6379 err = nl80211_parse_chandef(rdev, info, &chandef);
6380 if (err)
6381 return err;
6382
6383 if (!dont_wait_for_ack) {
6384 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6385 if (!msg)
6386 return -ENOMEM;
6387
6388 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6389 NL80211_CMD_FRAME);
6390
6391 if (IS_ERR(hdr)) {
6392 err = PTR_ERR(hdr);
6393 goto free_msg;
6394 }
6395 }
6396
6397 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
6398 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6399 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6400 no_cck, dont_wait_for_ack, &cookie);
6401 if (err)
6402 goto free_msg;
6403
6404 if (msg) {
6405 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6406 goto nla_put_failure;
6407
6408 genlmsg_end(msg, hdr);
6409 return genlmsg_reply(msg, info);
6410 }
6411
6412 return 0;
6413
6414 nla_put_failure:
6415 err = -ENOBUFS;
6416 free_msg:
6417 nlmsg_free(msg);
6418 return err;
6419 }
6420
6421 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6422 {
6423 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6424 struct wireless_dev *wdev = info->user_ptr[1];
6425 u64 cookie;
6426
6427 if (!info->attrs[NL80211_ATTR_COOKIE])
6428 return -EINVAL;
6429
6430 if (!rdev->ops->mgmt_tx_cancel_wait)
6431 return -EOPNOTSUPP;
6432
6433 switch (wdev->iftype) {
6434 case NL80211_IFTYPE_STATION:
6435 case NL80211_IFTYPE_ADHOC:
6436 case NL80211_IFTYPE_P2P_CLIENT:
6437 case NL80211_IFTYPE_AP:
6438 case NL80211_IFTYPE_AP_VLAN:
6439 case NL80211_IFTYPE_P2P_GO:
6440 case NL80211_IFTYPE_P2P_DEVICE:
6441 break;
6442 default:
6443 return -EOPNOTSUPP;
6444 }
6445
6446 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6447
6448 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
6449 }
6450
6451 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6452 {
6453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6454 struct wireless_dev *wdev;
6455 struct net_device *dev = info->user_ptr[1];
6456 u8 ps_state;
6457 bool state;
6458 int err;
6459
6460 if (!info->attrs[NL80211_ATTR_PS_STATE])
6461 return -EINVAL;
6462
6463 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6464
6465 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6466 return -EINVAL;
6467
6468 wdev = dev->ieee80211_ptr;
6469
6470 if (!rdev->ops->set_power_mgmt)
6471 return -EOPNOTSUPP;
6472
6473 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6474
6475 if (state == wdev->ps)
6476 return 0;
6477
6478 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
6479 if (!err)
6480 wdev->ps = state;
6481 return err;
6482 }
6483
6484 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6485 {
6486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6487 enum nl80211_ps_state ps_state;
6488 struct wireless_dev *wdev;
6489 struct net_device *dev = info->user_ptr[1];
6490 struct sk_buff *msg;
6491 void *hdr;
6492 int err;
6493
6494 wdev = dev->ieee80211_ptr;
6495
6496 if (!rdev->ops->set_power_mgmt)
6497 return -EOPNOTSUPP;
6498
6499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6500 if (!msg)
6501 return -ENOMEM;
6502
6503 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6504 NL80211_CMD_GET_POWER_SAVE);
6505 if (!hdr) {
6506 err = -ENOBUFS;
6507 goto free_msg;
6508 }
6509
6510 if (wdev->ps)
6511 ps_state = NL80211_PS_ENABLED;
6512 else
6513 ps_state = NL80211_PS_DISABLED;
6514
6515 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6516 goto nla_put_failure;
6517
6518 genlmsg_end(msg, hdr);
6519 return genlmsg_reply(msg, info);
6520
6521 nla_put_failure:
6522 err = -ENOBUFS;
6523 free_msg:
6524 nlmsg_free(msg);
6525 return err;
6526 }
6527
6528 static struct nla_policy
6529 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6530 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6531 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6532 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6533 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6534 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6535 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6536 };
6537
6538 static int nl80211_set_cqm_txe(struct genl_info *info,
6539 u32 rate, u32 pkts, u32 intvl)
6540 {
6541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6542 struct wireless_dev *wdev;
6543 struct net_device *dev = info->user_ptr[1];
6544
6545 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
6546 return -EINVAL;
6547
6548 wdev = dev->ieee80211_ptr;
6549
6550 if (!rdev->ops->set_cqm_txe_config)
6551 return -EOPNOTSUPP;
6552
6553 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6554 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6555 return -EOPNOTSUPP;
6556
6557 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
6558 }
6559
6560 static int nl80211_set_cqm_rssi(struct genl_info *info,
6561 s32 threshold, u32 hysteresis)
6562 {
6563 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6564 struct wireless_dev *wdev;
6565 struct net_device *dev = info->user_ptr[1];
6566
6567 if (threshold > 0)
6568 return -EINVAL;
6569
6570 wdev = dev->ieee80211_ptr;
6571
6572 if (!rdev->ops->set_cqm_rssi_config)
6573 return -EOPNOTSUPP;
6574
6575 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6576 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6577 return -EOPNOTSUPP;
6578
6579 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
6580 }
6581
6582 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6583 {
6584 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6585 struct nlattr *cqm;
6586 int err;
6587
6588 cqm = info->attrs[NL80211_ATTR_CQM];
6589 if (!cqm) {
6590 err = -EINVAL;
6591 goto out;
6592 }
6593
6594 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6595 nl80211_attr_cqm_policy);
6596 if (err)
6597 goto out;
6598
6599 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6600 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6601 s32 threshold;
6602 u32 hysteresis;
6603 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6604 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6605 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6606 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6607 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6608 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6609 u32 rate, pkts, intvl;
6610 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6611 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6612 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6613 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6614 } else
6615 err = -EINVAL;
6616
6617 out:
6618 return err;
6619 }
6620
6621 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6622 {
6623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6624 struct net_device *dev = info->user_ptr[1];
6625 struct mesh_config cfg;
6626 struct mesh_setup setup;
6627 int err;
6628
6629 /* start with default */
6630 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6631 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6632
6633 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6634 /* and parse parameters if given */
6635 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6636 if (err)
6637 return err;
6638 }
6639
6640 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6641 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6642 return -EINVAL;
6643
6644 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6645 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6646
6647 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6648 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6649 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6650 return -EINVAL;
6651
6652 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6653 /* parse additional setup parameters if given */
6654 err = nl80211_parse_mesh_setup(info, &setup);
6655 if (err)
6656 return err;
6657 }
6658
6659 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6660 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
6661 if (err)
6662 return err;
6663 } else {
6664 /* cfg80211_join_mesh() will sort it out */
6665 setup.chandef.chan = NULL;
6666 }
6667
6668 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6669 }
6670
6671 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6672 {
6673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6674 struct net_device *dev = info->user_ptr[1];
6675
6676 return cfg80211_leave_mesh(rdev, dev);
6677 }
6678
6679 #ifdef CONFIG_PM
6680 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6681 {
6682 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6683 struct sk_buff *msg;
6684 void *hdr;
6685
6686 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6687 return -EOPNOTSUPP;
6688
6689 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6690 if (!msg)
6691 return -ENOMEM;
6692
6693 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6694 NL80211_CMD_GET_WOWLAN);
6695 if (!hdr)
6696 goto nla_put_failure;
6697
6698 if (rdev->wowlan) {
6699 struct nlattr *nl_wowlan;
6700
6701 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6702 if (!nl_wowlan)
6703 goto nla_put_failure;
6704
6705 if ((rdev->wowlan->any &&
6706 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6707 (rdev->wowlan->disconnect &&
6708 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6709 (rdev->wowlan->magic_pkt &&
6710 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6711 (rdev->wowlan->gtk_rekey_failure &&
6712 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6713 (rdev->wowlan->eap_identity_req &&
6714 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6715 (rdev->wowlan->four_way_handshake &&
6716 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6717 (rdev->wowlan->rfkill_release &&
6718 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6719 goto nla_put_failure;
6720 if (rdev->wowlan->n_patterns) {
6721 struct nlattr *nl_pats, *nl_pat;
6722 int i, pat_len;
6723
6724 nl_pats = nla_nest_start(msg,
6725 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6726 if (!nl_pats)
6727 goto nla_put_failure;
6728
6729 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6730 nl_pat = nla_nest_start(msg, i + 1);
6731 if (!nl_pat)
6732 goto nla_put_failure;
6733 pat_len = rdev->wowlan->patterns[i].pattern_len;
6734 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6735 DIV_ROUND_UP(pat_len, 8),
6736 rdev->wowlan->patterns[i].mask) ||
6737 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6738 pat_len,
6739 rdev->wowlan->patterns[i].pattern))
6740 goto nla_put_failure;
6741 nla_nest_end(msg, nl_pat);
6742 }
6743 nla_nest_end(msg, nl_pats);
6744 }
6745
6746 nla_nest_end(msg, nl_wowlan);
6747 }
6748
6749 genlmsg_end(msg, hdr);
6750 return genlmsg_reply(msg, info);
6751
6752 nla_put_failure:
6753 nlmsg_free(msg);
6754 return -ENOBUFS;
6755 }
6756
6757 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6758 {
6759 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6760 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6761 struct cfg80211_wowlan new_triggers = {};
6762 struct cfg80211_wowlan *ntrig;
6763 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6764 int err, i;
6765 bool prev_enabled = rdev->wowlan;
6766
6767 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6768 return -EOPNOTSUPP;
6769
6770 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6771 cfg80211_rdev_free_wowlan(rdev);
6772 rdev->wowlan = NULL;
6773 goto set_wakeup;
6774 }
6775
6776 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6777 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6778 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6779 nl80211_wowlan_policy);
6780 if (err)
6781 return err;
6782
6783 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6784 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6785 return -EINVAL;
6786 new_triggers.any = true;
6787 }
6788
6789 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6790 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6791 return -EINVAL;
6792 new_triggers.disconnect = true;
6793 }
6794
6795 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6796 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6797 return -EINVAL;
6798 new_triggers.magic_pkt = true;
6799 }
6800
6801 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6802 return -EINVAL;
6803
6804 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6805 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6806 return -EINVAL;
6807 new_triggers.gtk_rekey_failure = true;
6808 }
6809
6810 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6811 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6812 return -EINVAL;
6813 new_triggers.eap_identity_req = true;
6814 }
6815
6816 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6817 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6818 return -EINVAL;
6819 new_triggers.four_way_handshake = true;
6820 }
6821
6822 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6823 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6824 return -EINVAL;
6825 new_triggers.rfkill_release = true;
6826 }
6827
6828 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6829 struct nlattr *pat;
6830 int n_patterns = 0;
6831 int rem, pat_len, mask_len;
6832 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6833
6834 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6835 rem)
6836 n_patterns++;
6837 if (n_patterns > wowlan->n_patterns)
6838 return -EINVAL;
6839
6840 new_triggers.patterns = kcalloc(n_patterns,
6841 sizeof(new_triggers.patterns[0]),
6842 GFP_KERNEL);
6843 if (!new_triggers.patterns)
6844 return -ENOMEM;
6845
6846 new_triggers.n_patterns = n_patterns;
6847 i = 0;
6848
6849 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6850 rem) {
6851 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6852 nla_data(pat), nla_len(pat), NULL);
6853 err = -EINVAL;
6854 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6855 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6856 goto error;
6857 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6858 mask_len = DIV_ROUND_UP(pat_len, 8);
6859 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6860 mask_len)
6861 goto error;
6862 if (pat_len > wowlan->pattern_max_len ||
6863 pat_len < wowlan->pattern_min_len)
6864 goto error;
6865
6866 new_triggers.patterns[i].mask =
6867 kmalloc(mask_len + pat_len, GFP_KERNEL);
6868 if (!new_triggers.patterns[i].mask) {
6869 err = -ENOMEM;
6870 goto error;
6871 }
6872 new_triggers.patterns[i].pattern =
6873 new_triggers.patterns[i].mask + mask_len;
6874 memcpy(new_triggers.patterns[i].mask,
6875 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6876 mask_len);
6877 new_triggers.patterns[i].pattern_len = pat_len;
6878 memcpy(new_triggers.patterns[i].pattern,
6879 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6880 pat_len);
6881 i++;
6882 }
6883 }
6884
6885 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6886 if (!ntrig) {
6887 err = -ENOMEM;
6888 goto error;
6889 }
6890 cfg80211_rdev_free_wowlan(rdev);
6891 rdev->wowlan = ntrig;
6892
6893 set_wakeup:
6894 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6895 rdev_set_wakeup(rdev, rdev->wowlan);
6896
6897 return 0;
6898 error:
6899 for (i = 0; i < new_triggers.n_patterns; i++)
6900 kfree(new_triggers.patterns[i].mask);
6901 kfree(new_triggers.patterns);
6902 return err;
6903 }
6904 #endif
6905
6906 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6907 {
6908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6909 struct net_device *dev = info->user_ptr[1];
6910 struct wireless_dev *wdev = dev->ieee80211_ptr;
6911 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6912 struct cfg80211_gtk_rekey_data rekey_data;
6913 int err;
6914
6915 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6916 return -EINVAL;
6917
6918 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6919 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6920 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6921 nl80211_rekey_policy);
6922 if (err)
6923 return err;
6924
6925 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6926 return -ERANGE;
6927 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6928 return -ERANGE;
6929 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6930 return -ERANGE;
6931
6932 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6933 NL80211_KEK_LEN);
6934 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6935 NL80211_KCK_LEN);
6936 memcpy(rekey_data.replay_ctr,
6937 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6938 NL80211_REPLAY_CTR_LEN);
6939
6940 wdev_lock(wdev);
6941 if (!wdev->current_bss) {
6942 err = -ENOTCONN;
6943 goto out;
6944 }
6945
6946 if (!rdev->ops->set_rekey_data) {
6947 err = -EOPNOTSUPP;
6948 goto out;
6949 }
6950
6951 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
6952 out:
6953 wdev_unlock(wdev);
6954 return err;
6955 }
6956
6957 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6958 struct genl_info *info)
6959 {
6960 struct net_device *dev = info->user_ptr[1];
6961 struct wireless_dev *wdev = dev->ieee80211_ptr;
6962
6963 if (wdev->iftype != NL80211_IFTYPE_AP &&
6964 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6965 return -EINVAL;
6966
6967 if (wdev->ap_unexpected_nlportid)
6968 return -EBUSY;
6969
6970 wdev->ap_unexpected_nlportid = info->snd_portid;
6971 return 0;
6972 }
6973
6974 static int nl80211_probe_client(struct sk_buff *skb,
6975 struct genl_info *info)
6976 {
6977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6978 struct net_device *dev = info->user_ptr[1];
6979 struct wireless_dev *wdev = dev->ieee80211_ptr;
6980 struct sk_buff *msg;
6981 void *hdr;
6982 const u8 *addr;
6983 u64 cookie;
6984 int err;
6985
6986 if (wdev->iftype != NL80211_IFTYPE_AP &&
6987 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6988 return -EOPNOTSUPP;
6989
6990 if (!info->attrs[NL80211_ATTR_MAC])
6991 return -EINVAL;
6992
6993 if (!rdev->ops->probe_client)
6994 return -EOPNOTSUPP;
6995
6996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6997 if (!msg)
6998 return -ENOMEM;
6999
7000 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7001 NL80211_CMD_PROBE_CLIENT);
7002
7003 if (IS_ERR(hdr)) {
7004 err = PTR_ERR(hdr);
7005 goto free_msg;
7006 }
7007
7008 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7009
7010 err = rdev_probe_client(rdev, dev, addr, &cookie);
7011 if (err)
7012 goto free_msg;
7013
7014 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7015 goto nla_put_failure;
7016
7017 genlmsg_end(msg, hdr);
7018
7019 return genlmsg_reply(msg, info);
7020
7021 nla_put_failure:
7022 err = -ENOBUFS;
7023 free_msg:
7024 nlmsg_free(msg);
7025 return err;
7026 }
7027
7028 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
7029 {
7030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7031 struct cfg80211_beacon_registration *reg, *nreg;
7032 int rv;
7033
7034 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
7035 return -EOPNOTSUPP;
7036
7037 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
7038 if (!nreg)
7039 return -ENOMEM;
7040
7041 /* First, check if already registered. */
7042 spin_lock_bh(&rdev->beacon_registrations_lock);
7043 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
7044 if (reg->nlportid == info->snd_portid) {
7045 rv = -EALREADY;
7046 goto out_err;
7047 }
7048 }
7049 /* Add it to the list */
7050 nreg->nlportid = info->snd_portid;
7051 list_add(&nreg->list, &rdev->beacon_registrations);
7052
7053 spin_unlock_bh(&rdev->beacon_registrations_lock);
7054
7055 return 0;
7056 out_err:
7057 spin_unlock_bh(&rdev->beacon_registrations_lock);
7058 kfree(nreg);
7059 return rv;
7060 }
7061
7062 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
7063 {
7064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7065 struct wireless_dev *wdev = info->user_ptr[1];
7066 int err;
7067
7068 if (!rdev->ops->start_p2p_device)
7069 return -EOPNOTSUPP;
7070
7071 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
7072 return -EOPNOTSUPP;
7073
7074 if (wdev->p2p_started)
7075 return 0;
7076
7077 mutex_lock(&rdev->devlist_mtx);
7078 err = cfg80211_can_add_interface(rdev, wdev->iftype);
7079 mutex_unlock(&rdev->devlist_mtx);
7080 if (err)
7081 return err;
7082
7083 err = rdev_start_p2p_device(rdev, wdev);
7084 if (err)
7085 return err;
7086
7087 wdev->p2p_started = true;
7088 mutex_lock(&rdev->devlist_mtx);
7089 rdev->opencount++;
7090 mutex_unlock(&rdev->devlist_mtx);
7091
7092 return 0;
7093 }
7094
7095 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
7096 {
7097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7098 struct wireless_dev *wdev = info->user_ptr[1];
7099
7100 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
7101 return -EOPNOTSUPP;
7102
7103 if (!rdev->ops->stop_p2p_device)
7104 return -EOPNOTSUPP;
7105
7106 if (!wdev->p2p_started)
7107 return 0;
7108
7109 rdev_stop_p2p_device(rdev, wdev);
7110 wdev->p2p_started = false;
7111
7112 mutex_lock(&rdev->devlist_mtx);
7113 rdev->opencount--;
7114 mutex_unlock(&rdev->devlist_mtx);
7115
7116 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
7117 rdev->scan_req->aborted = true;
7118 ___cfg80211_scan_done(rdev, true);
7119 }
7120
7121 return 0;
7122 }
7123
7124 #define NL80211_FLAG_NEED_WIPHY 0x01
7125 #define NL80211_FLAG_NEED_NETDEV 0x02
7126 #define NL80211_FLAG_NEED_RTNL 0x04
7127 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
7128 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
7129 NL80211_FLAG_CHECK_NETDEV_UP)
7130 #define NL80211_FLAG_NEED_WDEV 0x10
7131 /* If a netdev is associated, it must be UP, P2P must be started */
7132 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
7133 NL80211_FLAG_CHECK_NETDEV_UP)
7134
7135 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
7136 struct genl_info *info)
7137 {
7138 struct cfg80211_registered_device *rdev;
7139 struct wireless_dev *wdev;
7140 struct net_device *dev;
7141 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
7142
7143 if (rtnl)
7144 rtnl_lock();
7145
7146 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
7147 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7148 if (IS_ERR(rdev)) {
7149 if (rtnl)
7150 rtnl_unlock();
7151 return PTR_ERR(rdev);
7152 }
7153 info->user_ptr[0] = rdev;
7154 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
7155 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7156 mutex_lock(&cfg80211_mutex);
7157 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
7158 info->attrs);
7159 if (IS_ERR(wdev)) {
7160 mutex_unlock(&cfg80211_mutex);
7161 if (rtnl)
7162 rtnl_unlock();
7163 return PTR_ERR(wdev);
7164 }
7165
7166 dev = wdev->netdev;
7167 rdev = wiphy_to_dev(wdev->wiphy);
7168
7169 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
7170 if (!dev) {
7171 mutex_unlock(&cfg80211_mutex);
7172 if (rtnl)
7173 rtnl_unlock();
7174 return -EINVAL;
7175 }
7176
7177 info->user_ptr[1] = dev;
7178 } else {
7179 info->user_ptr[1] = wdev;
7180 }
7181
7182 if (dev) {
7183 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
7184 !netif_running(dev)) {
7185 mutex_unlock(&cfg80211_mutex);
7186 if (rtnl)
7187 rtnl_unlock();
7188 return -ENETDOWN;
7189 }
7190
7191 dev_hold(dev);
7192 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
7193 if (!wdev->p2p_started) {
7194 mutex_unlock(&cfg80211_mutex);
7195 if (rtnl)
7196 rtnl_unlock();
7197 return -ENETDOWN;
7198 }
7199 }
7200
7201 cfg80211_lock_rdev(rdev);
7202
7203 mutex_unlock(&cfg80211_mutex);
7204
7205 info->user_ptr[0] = rdev;
7206 }
7207
7208 return 0;
7209 }
7210
7211 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
7212 struct genl_info *info)
7213 {
7214 if (info->user_ptr[0])
7215 cfg80211_unlock_rdev(info->user_ptr[0]);
7216 if (info->user_ptr[1]) {
7217 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7218 struct wireless_dev *wdev = info->user_ptr[1];
7219
7220 if (wdev->netdev)
7221 dev_put(wdev->netdev);
7222 } else {
7223 dev_put(info->user_ptr[1]);
7224 }
7225 }
7226 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7227 rtnl_unlock();
7228 }
7229
7230 static struct genl_ops nl80211_ops[] = {
7231 {
7232 .cmd = NL80211_CMD_GET_WIPHY,
7233 .doit = nl80211_get_wiphy,
7234 .dumpit = nl80211_dump_wiphy,
7235 .policy = nl80211_policy,
7236 /* can be retrieved by unprivileged users */
7237 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7238 },
7239 {
7240 .cmd = NL80211_CMD_SET_WIPHY,
7241 .doit = nl80211_set_wiphy,
7242 .policy = nl80211_policy,
7243 .flags = GENL_ADMIN_PERM,
7244 .internal_flags = NL80211_FLAG_NEED_RTNL,
7245 },
7246 {
7247 .cmd = NL80211_CMD_GET_INTERFACE,
7248 .doit = nl80211_get_interface,
7249 .dumpit = nl80211_dump_interface,
7250 .policy = nl80211_policy,
7251 /* can be retrieved by unprivileged users */
7252 .internal_flags = NL80211_FLAG_NEED_WDEV,
7253 },
7254 {
7255 .cmd = NL80211_CMD_SET_INTERFACE,
7256 .doit = nl80211_set_interface,
7257 .policy = nl80211_policy,
7258 .flags = GENL_ADMIN_PERM,
7259 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7260 NL80211_FLAG_NEED_RTNL,
7261 },
7262 {
7263 .cmd = NL80211_CMD_NEW_INTERFACE,
7264 .doit = nl80211_new_interface,
7265 .policy = nl80211_policy,
7266 .flags = GENL_ADMIN_PERM,
7267 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7268 NL80211_FLAG_NEED_RTNL,
7269 },
7270 {
7271 .cmd = NL80211_CMD_DEL_INTERFACE,
7272 .doit = nl80211_del_interface,
7273 .policy = nl80211_policy,
7274 .flags = GENL_ADMIN_PERM,
7275 .internal_flags = NL80211_FLAG_NEED_WDEV |
7276 NL80211_FLAG_NEED_RTNL,
7277 },
7278 {
7279 .cmd = NL80211_CMD_GET_KEY,
7280 .doit = nl80211_get_key,
7281 .policy = nl80211_policy,
7282 .flags = GENL_ADMIN_PERM,
7283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7284 NL80211_FLAG_NEED_RTNL,
7285 },
7286 {
7287 .cmd = NL80211_CMD_SET_KEY,
7288 .doit = nl80211_set_key,
7289 .policy = nl80211_policy,
7290 .flags = GENL_ADMIN_PERM,
7291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7292 NL80211_FLAG_NEED_RTNL,
7293 },
7294 {
7295 .cmd = NL80211_CMD_NEW_KEY,
7296 .doit = nl80211_new_key,
7297 .policy = nl80211_policy,
7298 .flags = GENL_ADMIN_PERM,
7299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7300 NL80211_FLAG_NEED_RTNL,
7301 },
7302 {
7303 .cmd = NL80211_CMD_DEL_KEY,
7304 .doit = nl80211_del_key,
7305 .policy = nl80211_policy,
7306 .flags = GENL_ADMIN_PERM,
7307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7308 NL80211_FLAG_NEED_RTNL,
7309 },
7310 {
7311 .cmd = NL80211_CMD_SET_BEACON,
7312 .policy = nl80211_policy,
7313 .flags = GENL_ADMIN_PERM,
7314 .doit = nl80211_set_beacon,
7315 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7316 NL80211_FLAG_NEED_RTNL,
7317 },
7318 {
7319 .cmd = NL80211_CMD_START_AP,
7320 .policy = nl80211_policy,
7321 .flags = GENL_ADMIN_PERM,
7322 .doit = nl80211_start_ap,
7323 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7324 NL80211_FLAG_NEED_RTNL,
7325 },
7326 {
7327 .cmd = NL80211_CMD_STOP_AP,
7328 .policy = nl80211_policy,
7329 .flags = GENL_ADMIN_PERM,
7330 .doit = nl80211_stop_ap,
7331 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7332 NL80211_FLAG_NEED_RTNL,
7333 },
7334 {
7335 .cmd = NL80211_CMD_GET_STATION,
7336 .doit = nl80211_get_station,
7337 .dumpit = nl80211_dump_station,
7338 .policy = nl80211_policy,
7339 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7340 NL80211_FLAG_NEED_RTNL,
7341 },
7342 {
7343 .cmd = NL80211_CMD_SET_STATION,
7344 .doit = nl80211_set_station,
7345 .policy = nl80211_policy,
7346 .flags = GENL_ADMIN_PERM,
7347 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7348 NL80211_FLAG_NEED_RTNL,
7349 },
7350 {
7351 .cmd = NL80211_CMD_NEW_STATION,
7352 .doit = nl80211_new_station,
7353 .policy = nl80211_policy,
7354 .flags = GENL_ADMIN_PERM,
7355 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7356 NL80211_FLAG_NEED_RTNL,
7357 },
7358 {
7359 .cmd = NL80211_CMD_DEL_STATION,
7360 .doit = nl80211_del_station,
7361 .policy = nl80211_policy,
7362 .flags = GENL_ADMIN_PERM,
7363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7364 NL80211_FLAG_NEED_RTNL,
7365 },
7366 {
7367 .cmd = NL80211_CMD_GET_MPATH,
7368 .doit = nl80211_get_mpath,
7369 .dumpit = nl80211_dump_mpath,
7370 .policy = nl80211_policy,
7371 .flags = GENL_ADMIN_PERM,
7372 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7373 NL80211_FLAG_NEED_RTNL,
7374 },
7375 {
7376 .cmd = NL80211_CMD_SET_MPATH,
7377 .doit = nl80211_set_mpath,
7378 .policy = nl80211_policy,
7379 .flags = GENL_ADMIN_PERM,
7380 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7381 NL80211_FLAG_NEED_RTNL,
7382 },
7383 {
7384 .cmd = NL80211_CMD_NEW_MPATH,
7385 .doit = nl80211_new_mpath,
7386 .policy = nl80211_policy,
7387 .flags = GENL_ADMIN_PERM,
7388 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7389 NL80211_FLAG_NEED_RTNL,
7390 },
7391 {
7392 .cmd = NL80211_CMD_DEL_MPATH,
7393 .doit = nl80211_del_mpath,
7394 .policy = nl80211_policy,
7395 .flags = GENL_ADMIN_PERM,
7396 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7397 NL80211_FLAG_NEED_RTNL,
7398 },
7399 {
7400 .cmd = NL80211_CMD_SET_BSS,
7401 .doit = nl80211_set_bss,
7402 .policy = nl80211_policy,
7403 .flags = GENL_ADMIN_PERM,
7404 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7405 NL80211_FLAG_NEED_RTNL,
7406 },
7407 {
7408 .cmd = NL80211_CMD_GET_REG,
7409 .doit = nl80211_get_reg,
7410 .policy = nl80211_policy,
7411 /* can be retrieved by unprivileged users */
7412 },
7413 {
7414 .cmd = NL80211_CMD_SET_REG,
7415 .doit = nl80211_set_reg,
7416 .policy = nl80211_policy,
7417 .flags = GENL_ADMIN_PERM,
7418 },
7419 {
7420 .cmd = NL80211_CMD_REQ_SET_REG,
7421 .doit = nl80211_req_set_reg,
7422 .policy = nl80211_policy,
7423 .flags = GENL_ADMIN_PERM,
7424 },
7425 {
7426 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7427 .doit = nl80211_get_mesh_config,
7428 .policy = nl80211_policy,
7429 /* can be retrieved by unprivileged users */
7430 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7431 NL80211_FLAG_NEED_RTNL,
7432 },
7433 {
7434 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7435 .doit = nl80211_update_mesh_config,
7436 .policy = nl80211_policy,
7437 .flags = GENL_ADMIN_PERM,
7438 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7439 NL80211_FLAG_NEED_RTNL,
7440 },
7441 {
7442 .cmd = NL80211_CMD_TRIGGER_SCAN,
7443 .doit = nl80211_trigger_scan,
7444 .policy = nl80211_policy,
7445 .flags = GENL_ADMIN_PERM,
7446 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7447 NL80211_FLAG_NEED_RTNL,
7448 },
7449 {
7450 .cmd = NL80211_CMD_GET_SCAN,
7451 .policy = nl80211_policy,
7452 .dumpit = nl80211_dump_scan,
7453 },
7454 {
7455 .cmd = NL80211_CMD_START_SCHED_SCAN,
7456 .doit = nl80211_start_sched_scan,
7457 .policy = nl80211_policy,
7458 .flags = GENL_ADMIN_PERM,
7459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7460 NL80211_FLAG_NEED_RTNL,
7461 },
7462 {
7463 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7464 .doit = nl80211_stop_sched_scan,
7465 .policy = nl80211_policy,
7466 .flags = GENL_ADMIN_PERM,
7467 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7468 NL80211_FLAG_NEED_RTNL,
7469 },
7470 {
7471 .cmd = NL80211_CMD_AUTHENTICATE,
7472 .doit = nl80211_authenticate,
7473 .policy = nl80211_policy,
7474 .flags = GENL_ADMIN_PERM,
7475 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7476 NL80211_FLAG_NEED_RTNL,
7477 },
7478 {
7479 .cmd = NL80211_CMD_ASSOCIATE,
7480 .doit = nl80211_associate,
7481 .policy = nl80211_policy,
7482 .flags = GENL_ADMIN_PERM,
7483 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7484 NL80211_FLAG_NEED_RTNL,
7485 },
7486 {
7487 .cmd = NL80211_CMD_DEAUTHENTICATE,
7488 .doit = nl80211_deauthenticate,
7489 .policy = nl80211_policy,
7490 .flags = GENL_ADMIN_PERM,
7491 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7492 NL80211_FLAG_NEED_RTNL,
7493 },
7494 {
7495 .cmd = NL80211_CMD_DISASSOCIATE,
7496 .doit = nl80211_disassociate,
7497 .policy = nl80211_policy,
7498 .flags = GENL_ADMIN_PERM,
7499 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7500 NL80211_FLAG_NEED_RTNL,
7501 },
7502 {
7503 .cmd = NL80211_CMD_JOIN_IBSS,
7504 .doit = nl80211_join_ibss,
7505 .policy = nl80211_policy,
7506 .flags = GENL_ADMIN_PERM,
7507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7508 NL80211_FLAG_NEED_RTNL,
7509 },
7510 {
7511 .cmd = NL80211_CMD_LEAVE_IBSS,
7512 .doit = nl80211_leave_ibss,
7513 .policy = nl80211_policy,
7514 .flags = GENL_ADMIN_PERM,
7515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7516 NL80211_FLAG_NEED_RTNL,
7517 },
7518 #ifdef CONFIG_NL80211_TESTMODE
7519 {
7520 .cmd = NL80211_CMD_TESTMODE,
7521 .doit = nl80211_testmode_do,
7522 .dumpit = nl80211_testmode_dump,
7523 .policy = nl80211_policy,
7524 .flags = GENL_ADMIN_PERM,
7525 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7526 NL80211_FLAG_NEED_RTNL,
7527 },
7528 #endif
7529 {
7530 .cmd = NL80211_CMD_CONNECT,
7531 .doit = nl80211_connect,
7532 .policy = nl80211_policy,
7533 .flags = GENL_ADMIN_PERM,
7534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7535 NL80211_FLAG_NEED_RTNL,
7536 },
7537 {
7538 .cmd = NL80211_CMD_DISCONNECT,
7539 .doit = nl80211_disconnect,
7540 .policy = nl80211_policy,
7541 .flags = GENL_ADMIN_PERM,
7542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7543 NL80211_FLAG_NEED_RTNL,
7544 },
7545 {
7546 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7547 .doit = nl80211_wiphy_netns,
7548 .policy = nl80211_policy,
7549 .flags = GENL_ADMIN_PERM,
7550 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7551 NL80211_FLAG_NEED_RTNL,
7552 },
7553 {
7554 .cmd = NL80211_CMD_GET_SURVEY,
7555 .policy = nl80211_policy,
7556 .dumpit = nl80211_dump_survey,
7557 },
7558 {
7559 .cmd = NL80211_CMD_SET_PMKSA,
7560 .doit = nl80211_setdel_pmksa,
7561 .policy = nl80211_policy,
7562 .flags = GENL_ADMIN_PERM,
7563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7564 NL80211_FLAG_NEED_RTNL,
7565 },
7566 {
7567 .cmd = NL80211_CMD_DEL_PMKSA,
7568 .doit = nl80211_setdel_pmksa,
7569 .policy = nl80211_policy,
7570 .flags = GENL_ADMIN_PERM,
7571 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7572 NL80211_FLAG_NEED_RTNL,
7573 },
7574 {
7575 .cmd = NL80211_CMD_FLUSH_PMKSA,
7576 .doit = nl80211_flush_pmksa,
7577 .policy = nl80211_policy,
7578 .flags = GENL_ADMIN_PERM,
7579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7580 NL80211_FLAG_NEED_RTNL,
7581 },
7582 {
7583 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7584 .doit = nl80211_remain_on_channel,
7585 .policy = nl80211_policy,
7586 .flags = GENL_ADMIN_PERM,
7587 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7588 NL80211_FLAG_NEED_RTNL,
7589 },
7590 {
7591 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7592 .doit = nl80211_cancel_remain_on_channel,
7593 .policy = nl80211_policy,
7594 .flags = GENL_ADMIN_PERM,
7595 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7596 NL80211_FLAG_NEED_RTNL,
7597 },
7598 {
7599 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7600 .doit = nl80211_set_tx_bitrate_mask,
7601 .policy = nl80211_policy,
7602 .flags = GENL_ADMIN_PERM,
7603 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7604 NL80211_FLAG_NEED_RTNL,
7605 },
7606 {
7607 .cmd = NL80211_CMD_REGISTER_FRAME,
7608 .doit = nl80211_register_mgmt,
7609 .policy = nl80211_policy,
7610 .flags = GENL_ADMIN_PERM,
7611 .internal_flags = NL80211_FLAG_NEED_WDEV |
7612 NL80211_FLAG_NEED_RTNL,
7613 },
7614 {
7615 .cmd = NL80211_CMD_FRAME,
7616 .doit = nl80211_tx_mgmt,
7617 .policy = nl80211_policy,
7618 .flags = GENL_ADMIN_PERM,
7619 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7620 NL80211_FLAG_NEED_RTNL,
7621 },
7622 {
7623 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7624 .doit = nl80211_tx_mgmt_cancel_wait,
7625 .policy = nl80211_policy,
7626 .flags = GENL_ADMIN_PERM,
7627 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7628 NL80211_FLAG_NEED_RTNL,
7629 },
7630 {
7631 .cmd = NL80211_CMD_SET_POWER_SAVE,
7632 .doit = nl80211_set_power_save,
7633 .policy = nl80211_policy,
7634 .flags = GENL_ADMIN_PERM,
7635 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7636 NL80211_FLAG_NEED_RTNL,
7637 },
7638 {
7639 .cmd = NL80211_CMD_GET_POWER_SAVE,
7640 .doit = nl80211_get_power_save,
7641 .policy = nl80211_policy,
7642 /* can be retrieved by unprivileged users */
7643 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7644 NL80211_FLAG_NEED_RTNL,
7645 },
7646 {
7647 .cmd = NL80211_CMD_SET_CQM,
7648 .doit = nl80211_set_cqm,
7649 .policy = nl80211_policy,
7650 .flags = GENL_ADMIN_PERM,
7651 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7652 NL80211_FLAG_NEED_RTNL,
7653 },
7654 {
7655 .cmd = NL80211_CMD_SET_CHANNEL,
7656 .doit = nl80211_set_channel,
7657 .policy = nl80211_policy,
7658 .flags = GENL_ADMIN_PERM,
7659 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7660 NL80211_FLAG_NEED_RTNL,
7661 },
7662 {
7663 .cmd = NL80211_CMD_SET_WDS_PEER,
7664 .doit = nl80211_set_wds_peer,
7665 .policy = nl80211_policy,
7666 .flags = GENL_ADMIN_PERM,
7667 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7668 NL80211_FLAG_NEED_RTNL,
7669 },
7670 {
7671 .cmd = NL80211_CMD_JOIN_MESH,
7672 .doit = nl80211_join_mesh,
7673 .policy = nl80211_policy,
7674 .flags = GENL_ADMIN_PERM,
7675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7676 NL80211_FLAG_NEED_RTNL,
7677 },
7678 {
7679 .cmd = NL80211_CMD_LEAVE_MESH,
7680 .doit = nl80211_leave_mesh,
7681 .policy = nl80211_policy,
7682 .flags = GENL_ADMIN_PERM,
7683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7684 NL80211_FLAG_NEED_RTNL,
7685 },
7686 #ifdef CONFIG_PM
7687 {
7688 .cmd = NL80211_CMD_GET_WOWLAN,
7689 .doit = nl80211_get_wowlan,
7690 .policy = nl80211_policy,
7691 /* can be retrieved by unprivileged users */
7692 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7693 NL80211_FLAG_NEED_RTNL,
7694 },
7695 {
7696 .cmd = NL80211_CMD_SET_WOWLAN,
7697 .doit = nl80211_set_wowlan,
7698 .policy = nl80211_policy,
7699 .flags = GENL_ADMIN_PERM,
7700 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7701 NL80211_FLAG_NEED_RTNL,
7702 },
7703 #endif
7704 {
7705 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7706 .doit = nl80211_set_rekey_data,
7707 .policy = nl80211_policy,
7708 .flags = GENL_ADMIN_PERM,
7709 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7710 NL80211_FLAG_NEED_RTNL,
7711 },
7712 {
7713 .cmd = NL80211_CMD_TDLS_MGMT,
7714 .doit = nl80211_tdls_mgmt,
7715 .policy = nl80211_policy,
7716 .flags = GENL_ADMIN_PERM,
7717 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7718 NL80211_FLAG_NEED_RTNL,
7719 },
7720 {
7721 .cmd = NL80211_CMD_TDLS_OPER,
7722 .doit = nl80211_tdls_oper,
7723 .policy = nl80211_policy,
7724 .flags = GENL_ADMIN_PERM,
7725 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7726 NL80211_FLAG_NEED_RTNL,
7727 },
7728 {
7729 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7730 .doit = nl80211_register_unexpected_frame,
7731 .policy = nl80211_policy,
7732 .flags = GENL_ADMIN_PERM,
7733 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7734 NL80211_FLAG_NEED_RTNL,
7735 },
7736 {
7737 .cmd = NL80211_CMD_PROBE_CLIENT,
7738 .doit = nl80211_probe_client,
7739 .policy = nl80211_policy,
7740 .flags = GENL_ADMIN_PERM,
7741 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7742 NL80211_FLAG_NEED_RTNL,
7743 },
7744 {
7745 .cmd = NL80211_CMD_REGISTER_BEACONS,
7746 .doit = nl80211_register_beacons,
7747 .policy = nl80211_policy,
7748 .flags = GENL_ADMIN_PERM,
7749 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7750 NL80211_FLAG_NEED_RTNL,
7751 },
7752 {
7753 .cmd = NL80211_CMD_SET_NOACK_MAP,
7754 .doit = nl80211_set_noack_map,
7755 .policy = nl80211_policy,
7756 .flags = GENL_ADMIN_PERM,
7757 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7758 NL80211_FLAG_NEED_RTNL,
7759 },
7760 {
7761 .cmd = NL80211_CMD_START_P2P_DEVICE,
7762 .doit = nl80211_start_p2p_device,
7763 .policy = nl80211_policy,
7764 .flags = GENL_ADMIN_PERM,
7765 .internal_flags = NL80211_FLAG_NEED_WDEV |
7766 NL80211_FLAG_NEED_RTNL,
7767 },
7768 {
7769 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7770 .doit = nl80211_stop_p2p_device,
7771 .policy = nl80211_policy,
7772 .flags = GENL_ADMIN_PERM,
7773 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7774 NL80211_FLAG_NEED_RTNL,
7775 },
7776 {
7777 .cmd = NL80211_CMD_SET_MCAST_RATE,
7778 .doit = nl80211_set_mcast_rate,
7779 .policy = nl80211_policy,
7780 .flags = GENL_ADMIN_PERM,
7781 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7782 NL80211_FLAG_NEED_RTNL,
7783 },
7784 };
7785
7786 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7787 .name = "mlme",
7788 };
7789
7790 /* multicast groups */
7791 static struct genl_multicast_group nl80211_config_mcgrp = {
7792 .name = "config",
7793 };
7794 static struct genl_multicast_group nl80211_scan_mcgrp = {
7795 .name = "scan",
7796 };
7797 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7798 .name = "regulatory",
7799 };
7800
7801 /* notification functions */
7802
7803 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7804 {
7805 struct sk_buff *msg;
7806
7807 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7808 if (!msg)
7809 return;
7810
7811 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7812 nlmsg_free(msg);
7813 return;
7814 }
7815
7816 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7817 nl80211_config_mcgrp.id, GFP_KERNEL);
7818 }
7819
7820 static int nl80211_add_scan_req(struct sk_buff *msg,
7821 struct cfg80211_registered_device *rdev)
7822 {
7823 struct cfg80211_scan_request *req = rdev->scan_req;
7824 struct nlattr *nest;
7825 int i;
7826
7827 ASSERT_RDEV_LOCK(rdev);
7828
7829 if (WARN_ON(!req))
7830 return 0;
7831
7832 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7833 if (!nest)
7834 goto nla_put_failure;
7835 for (i = 0; i < req->n_ssids; i++) {
7836 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7837 goto nla_put_failure;
7838 }
7839 nla_nest_end(msg, nest);
7840
7841 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7842 if (!nest)
7843 goto nla_put_failure;
7844 for (i = 0; i < req->n_channels; i++) {
7845 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7846 goto nla_put_failure;
7847 }
7848 nla_nest_end(msg, nest);
7849
7850 if (req->ie &&
7851 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7852 goto nla_put_failure;
7853
7854 if (req->flags)
7855 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
7856
7857 return 0;
7858 nla_put_failure:
7859 return -ENOBUFS;
7860 }
7861
7862 static int nl80211_send_scan_msg(struct sk_buff *msg,
7863 struct cfg80211_registered_device *rdev,
7864 struct wireless_dev *wdev,
7865 u32 portid, u32 seq, int flags,
7866 u32 cmd)
7867 {
7868 void *hdr;
7869
7870 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7871 if (!hdr)
7872 return -1;
7873
7874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7875 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7876 wdev->netdev->ifindex)) ||
7877 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7878 goto nla_put_failure;
7879
7880 /* ignore errors and send incomplete event anyway */
7881 nl80211_add_scan_req(msg, rdev);
7882
7883 return genlmsg_end(msg, hdr);
7884
7885 nla_put_failure:
7886 genlmsg_cancel(msg, hdr);
7887 return -EMSGSIZE;
7888 }
7889
7890 static int
7891 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7892 struct cfg80211_registered_device *rdev,
7893 struct net_device *netdev,
7894 u32 portid, u32 seq, int flags, u32 cmd)
7895 {
7896 void *hdr;
7897
7898 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7899 if (!hdr)
7900 return -1;
7901
7902 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7903 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7904 goto nla_put_failure;
7905
7906 return genlmsg_end(msg, hdr);
7907
7908 nla_put_failure:
7909 genlmsg_cancel(msg, hdr);
7910 return -EMSGSIZE;
7911 }
7912
7913 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7914 struct wireless_dev *wdev)
7915 {
7916 struct sk_buff *msg;
7917
7918 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7919 if (!msg)
7920 return;
7921
7922 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7923 NL80211_CMD_TRIGGER_SCAN) < 0) {
7924 nlmsg_free(msg);
7925 return;
7926 }
7927
7928 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7929 nl80211_scan_mcgrp.id, GFP_KERNEL);
7930 }
7931
7932 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7933 struct wireless_dev *wdev)
7934 {
7935 struct sk_buff *msg;
7936
7937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7938 if (!msg)
7939 return;
7940
7941 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7942 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7943 nlmsg_free(msg);
7944 return;
7945 }
7946
7947 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7948 nl80211_scan_mcgrp.id, GFP_KERNEL);
7949 }
7950
7951 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7952 struct wireless_dev *wdev)
7953 {
7954 struct sk_buff *msg;
7955
7956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7957 if (!msg)
7958 return;
7959
7960 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7961 NL80211_CMD_SCAN_ABORTED) < 0) {
7962 nlmsg_free(msg);
7963 return;
7964 }
7965
7966 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7967 nl80211_scan_mcgrp.id, GFP_KERNEL);
7968 }
7969
7970 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7971 struct net_device *netdev)
7972 {
7973 struct sk_buff *msg;
7974
7975 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7976 if (!msg)
7977 return;
7978
7979 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7980 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7981 nlmsg_free(msg);
7982 return;
7983 }
7984
7985 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7986 nl80211_scan_mcgrp.id, GFP_KERNEL);
7987 }
7988
7989 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7990 struct net_device *netdev, u32 cmd)
7991 {
7992 struct sk_buff *msg;
7993
7994 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7995 if (!msg)
7996 return;
7997
7998 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7999 nlmsg_free(msg);
8000 return;
8001 }
8002
8003 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8004 nl80211_scan_mcgrp.id, GFP_KERNEL);
8005 }
8006
8007 /*
8008 * This can happen on global regulatory changes or device specific settings
8009 * based on custom world regulatory domains.
8010 */
8011 void nl80211_send_reg_change_event(struct regulatory_request *request)
8012 {
8013 struct sk_buff *msg;
8014 void *hdr;
8015
8016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8017 if (!msg)
8018 return;
8019
8020 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
8021 if (!hdr) {
8022 nlmsg_free(msg);
8023 return;
8024 }
8025
8026 /* Userspace can always count this one always being set */
8027 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
8028 goto nla_put_failure;
8029
8030 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
8031 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8032 NL80211_REGDOM_TYPE_WORLD))
8033 goto nla_put_failure;
8034 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
8035 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8036 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
8037 goto nla_put_failure;
8038 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
8039 request->intersect) {
8040 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8041 NL80211_REGDOM_TYPE_INTERSECTION))
8042 goto nla_put_failure;
8043 } else {
8044 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8045 NL80211_REGDOM_TYPE_COUNTRY) ||
8046 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
8047 request->alpha2))
8048 goto nla_put_failure;
8049 }
8050
8051 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
8052 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
8053 goto nla_put_failure;
8054
8055 genlmsg_end(msg, hdr);
8056
8057 rcu_read_lock();
8058 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8059 GFP_ATOMIC);
8060 rcu_read_unlock();
8061
8062 return;
8063
8064 nla_put_failure:
8065 genlmsg_cancel(msg, hdr);
8066 nlmsg_free(msg);
8067 }
8068
8069 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
8070 struct net_device *netdev,
8071 const u8 *buf, size_t len,
8072 enum nl80211_commands cmd, gfp_t gfp)
8073 {
8074 struct sk_buff *msg;
8075 void *hdr;
8076
8077 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8078 if (!msg)
8079 return;
8080
8081 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8082 if (!hdr) {
8083 nlmsg_free(msg);
8084 return;
8085 }
8086
8087 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8088 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8089 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8090 goto nla_put_failure;
8091
8092 genlmsg_end(msg, hdr);
8093
8094 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8095 nl80211_mlme_mcgrp.id, gfp);
8096 return;
8097
8098 nla_put_failure:
8099 genlmsg_cancel(msg, hdr);
8100 nlmsg_free(msg);
8101 }
8102
8103 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
8104 struct net_device *netdev, const u8 *buf,
8105 size_t len, gfp_t gfp)
8106 {
8107 nl80211_send_mlme_event(rdev, netdev, buf, len,
8108 NL80211_CMD_AUTHENTICATE, gfp);
8109 }
8110
8111 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
8112 struct net_device *netdev, const u8 *buf,
8113 size_t len, gfp_t gfp)
8114 {
8115 nl80211_send_mlme_event(rdev, netdev, buf, len,
8116 NL80211_CMD_ASSOCIATE, gfp);
8117 }
8118
8119 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
8120 struct net_device *netdev, const u8 *buf,
8121 size_t len, gfp_t gfp)
8122 {
8123 nl80211_send_mlme_event(rdev, netdev, buf, len,
8124 NL80211_CMD_DEAUTHENTICATE, gfp);
8125 }
8126
8127 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
8128 struct net_device *netdev, const u8 *buf,
8129 size_t len, gfp_t gfp)
8130 {
8131 nl80211_send_mlme_event(rdev, netdev, buf, len,
8132 NL80211_CMD_DISASSOCIATE, gfp);
8133 }
8134
8135 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
8136 struct net_device *netdev, const u8 *buf,
8137 size_t len, gfp_t gfp)
8138 {
8139 nl80211_send_mlme_event(rdev, netdev, buf, len,
8140 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
8141 }
8142
8143 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
8144 struct net_device *netdev, const u8 *buf,
8145 size_t len, gfp_t gfp)
8146 {
8147 nl80211_send_mlme_event(rdev, netdev, buf, len,
8148 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
8149 }
8150
8151 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
8152 struct net_device *netdev, int cmd,
8153 const u8 *addr, gfp_t gfp)
8154 {
8155 struct sk_buff *msg;
8156 void *hdr;
8157
8158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8159 if (!msg)
8160 return;
8161
8162 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8163 if (!hdr) {
8164 nlmsg_free(msg);
8165 return;
8166 }
8167
8168 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8169 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8170 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
8171 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8172 goto nla_put_failure;
8173
8174 genlmsg_end(msg, hdr);
8175
8176 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8177 nl80211_mlme_mcgrp.id, gfp);
8178 return;
8179
8180 nla_put_failure:
8181 genlmsg_cancel(msg, hdr);
8182 nlmsg_free(msg);
8183 }
8184
8185 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
8186 struct net_device *netdev, const u8 *addr,
8187 gfp_t gfp)
8188 {
8189 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
8190 addr, gfp);
8191 }
8192
8193 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
8194 struct net_device *netdev, const u8 *addr,
8195 gfp_t gfp)
8196 {
8197 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
8198 addr, gfp);
8199 }
8200
8201 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
8202 struct net_device *netdev, const u8 *bssid,
8203 const u8 *req_ie, size_t req_ie_len,
8204 const u8 *resp_ie, size_t resp_ie_len,
8205 u16 status, gfp_t gfp)
8206 {
8207 struct sk_buff *msg;
8208 void *hdr;
8209
8210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8211 if (!msg)
8212 return;
8213
8214 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
8215 if (!hdr) {
8216 nlmsg_free(msg);
8217 return;
8218 }
8219
8220 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8221 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8222 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
8223 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
8224 (req_ie &&
8225 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8226 (resp_ie &&
8227 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8228 goto nla_put_failure;
8229
8230 genlmsg_end(msg, hdr);
8231
8232 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8233 nl80211_mlme_mcgrp.id, gfp);
8234 return;
8235
8236 nla_put_failure:
8237 genlmsg_cancel(msg, hdr);
8238 nlmsg_free(msg);
8239
8240 }
8241
8242 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8243 struct net_device *netdev, const u8 *bssid,
8244 const u8 *req_ie, size_t req_ie_len,
8245 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
8246 {
8247 struct sk_buff *msg;
8248 void *hdr;
8249
8250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8251 if (!msg)
8252 return;
8253
8254 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
8255 if (!hdr) {
8256 nlmsg_free(msg);
8257 return;
8258 }
8259
8260 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8261 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8262 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
8263 (req_ie &&
8264 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8265 (resp_ie &&
8266 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8267 goto nla_put_failure;
8268
8269 genlmsg_end(msg, hdr);
8270
8271 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8272 nl80211_mlme_mcgrp.id, gfp);
8273 return;
8274
8275 nla_put_failure:
8276 genlmsg_cancel(msg, hdr);
8277 nlmsg_free(msg);
8278
8279 }
8280
8281 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8282 struct net_device *netdev, u16 reason,
8283 const u8 *ie, size_t ie_len, bool from_ap)
8284 {
8285 struct sk_buff *msg;
8286 void *hdr;
8287
8288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8289 if (!msg)
8290 return;
8291
8292 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8293 if (!hdr) {
8294 nlmsg_free(msg);
8295 return;
8296 }
8297
8298 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8299 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8300 (from_ap && reason &&
8301 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8302 (from_ap &&
8303 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8304 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8305 goto nla_put_failure;
8306
8307 genlmsg_end(msg, hdr);
8308
8309 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8310 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8311 return;
8312
8313 nla_put_failure:
8314 genlmsg_cancel(msg, hdr);
8315 nlmsg_free(msg);
8316
8317 }
8318
8319 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8320 struct net_device *netdev, const u8 *bssid,
8321 gfp_t gfp)
8322 {
8323 struct sk_buff *msg;
8324 void *hdr;
8325
8326 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8327 if (!msg)
8328 return;
8329
8330 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8331 if (!hdr) {
8332 nlmsg_free(msg);
8333 return;
8334 }
8335
8336 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8337 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8338 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8339 goto nla_put_failure;
8340
8341 genlmsg_end(msg, hdr);
8342
8343 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8344 nl80211_mlme_mcgrp.id, gfp);
8345 return;
8346
8347 nla_put_failure:
8348 genlmsg_cancel(msg, hdr);
8349 nlmsg_free(msg);
8350 }
8351
8352 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8353 struct net_device *netdev,
8354 const u8 *macaddr, const u8* ie, u8 ie_len,
8355 gfp_t gfp)
8356 {
8357 struct sk_buff *msg;
8358 void *hdr;
8359
8360 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8361 if (!msg)
8362 return;
8363
8364 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8365 if (!hdr) {
8366 nlmsg_free(msg);
8367 return;
8368 }
8369
8370 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8371 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8372 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8373 (ie_len && ie &&
8374 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8375 goto nla_put_failure;
8376
8377 genlmsg_end(msg, hdr);
8378
8379 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8380 nl80211_mlme_mcgrp.id, gfp);
8381 return;
8382
8383 nla_put_failure:
8384 genlmsg_cancel(msg, hdr);
8385 nlmsg_free(msg);
8386 }
8387
8388 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8389 struct net_device *netdev, const u8 *addr,
8390 enum nl80211_key_type key_type, int key_id,
8391 const u8 *tsc, gfp_t gfp)
8392 {
8393 struct sk_buff *msg;
8394 void *hdr;
8395
8396 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8397 if (!msg)
8398 return;
8399
8400 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8401 if (!hdr) {
8402 nlmsg_free(msg);
8403 return;
8404 }
8405
8406 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8407 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8408 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8409 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8410 (key_id != -1 &&
8411 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8412 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8413 goto nla_put_failure;
8414
8415 genlmsg_end(msg, hdr);
8416
8417 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8418 nl80211_mlme_mcgrp.id, gfp);
8419 return;
8420
8421 nla_put_failure:
8422 genlmsg_cancel(msg, hdr);
8423 nlmsg_free(msg);
8424 }
8425
8426 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8427 struct ieee80211_channel *channel_before,
8428 struct ieee80211_channel *channel_after)
8429 {
8430 struct sk_buff *msg;
8431 void *hdr;
8432 struct nlattr *nl_freq;
8433
8434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8435 if (!msg)
8436 return;
8437
8438 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8439 if (!hdr) {
8440 nlmsg_free(msg);
8441 return;
8442 }
8443
8444 /*
8445 * Since we are applying the beacon hint to a wiphy we know its
8446 * wiphy_idx is valid
8447 */
8448 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8449 goto nla_put_failure;
8450
8451 /* Before */
8452 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8453 if (!nl_freq)
8454 goto nla_put_failure;
8455 if (nl80211_msg_put_channel(msg, channel_before))
8456 goto nla_put_failure;
8457 nla_nest_end(msg, nl_freq);
8458
8459 /* After */
8460 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8461 if (!nl_freq)
8462 goto nla_put_failure;
8463 if (nl80211_msg_put_channel(msg, channel_after))
8464 goto nla_put_failure;
8465 nla_nest_end(msg, nl_freq);
8466
8467 genlmsg_end(msg, hdr);
8468
8469 rcu_read_lock();
8470 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8471 GFP_ATOMIC);
8472 rcu_read_unlock();
8473
8474 return;
8475
8476 nla_put_failure:
8477 genlmsg_cancel(msg, hdr);
8478 nlmsg_free(msg);
8479 }
8480
8481 static void nl80211_send_remain_on_chan_event(
8482 int cmd, struct cfg80211_registered_device *rdev,
8483 struct wireless_dev *wdev, u64 cookie,
8484 struct ieee80211_channel *chan,
8485 unsigned int duration, gfp_t gfp)
8486 {
8487 struct sk_buff *msg;
8488 void *hdr;
8489
8490 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8491 if (!msg)
8492 return;
8493
8494 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8495 if (!hdr) {
8496 nlmsg_free(msg);
8497 return;
8498 }
8499
8500 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8501 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8502 wdev->netdev->ifindex)) ||
8503 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8504 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8505 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
8506 NL80211_CHAN_NO_HT) ||
8507 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8508 goto nla_put_failure;
8509
8510 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8511 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8512 goto nla_put_failure;
8513
8514 genlmsg_end(msg, hdr);
8515
8516 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8517 nl80211_mlme_mcgrp.id, gfp);
8518 return;
8519
8520 nla_put_failure:
8521 genlmsg_cancel(msg, hdr);
8522 nlmsg_free(msg);
8523 }
8524
8525 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8526 struct wireless_dev *wdev, u64 cookie,
8527 struct ieee80211_channel *chan,
8528 unsigned int duration, gfp_t gfp)
8529 {
8530 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8531 rdev, wdev, cookie, chan,
8532 duration, gfp);
8533 }
8534
8535 void nl80211_send_remain_on_channel_cancel(
8536 struct cfg80211_registered_device *rdev,
8537 struct wireless_dev *wdev,
8538 u64 cookie, struct ieee80211_channel *chan, gfp_t gfp)
8539 {
8540 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8541 rdev, wdev, cookie, chan, 0, gfp);
8542 }
8543
8544 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8545 struct net_device *dev, const u8 *mac_addr,
8546 struct station_info *sinfo, gfp_t gfp)
8547 {
8548 struct sk_buff *msg;
8549
8550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8551 if (!msg)
8552 return;
8553
8554 if (nl80211_send_station(msg, 0, 0, 0,
8555 rdev, dev, mac_addr, sinfo) < 0) {
8556 nlmsg_free(msg);
8557 return;
8558 }
8559
8560 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8561 nl80211_mlme_mcgrp.id, gfp);
8562 }
8563
8564 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8565 struct net_device *dev, const u8 *mac_addr,
8566 gfp_t gfp)
8567 {
8568 struct sk_buff *msg;
8569 void *hdr;
8570
8571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8572 if (!msg)
8573 return;
8574
8575 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8576 if (!hdr) {
8577 nlmsg_free(msg);
8578 return;
8579 }
8580
8581 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8582 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8583 goto nla_put_failure;
8584
8585 genlmsg_end(msg, hdr);
8586
8587 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8588 nl80211_mlme_mcgrp.id, gfp);
8589 return;
8590
8591 nla_put_failure:
8592 genlmsg_cancel(msg, hdr);
8593 nlmsg_free(msg);
8594 }
8595
8596 void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
8597 struct net_device *dev, const u8 *mac_addr,
8598 enum nl80211_connect_failed_reason reason,
8599 gfp_t gfp)
8600 {
8601 struct sk_buff *msg;
8602 void *hdr;
8603
8604 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8605 if (!msg)
8606 return;
8607
8608 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
8609 if (!hdr) {
8610 nlmsg_free(msg);
8611 return;
8612 }
8613
8614 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8615 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
8616 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
8617 goto nla_put_failure;
8618
8619 genlmsg_end(msg, hdr);
8620
8621 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8622 nl80211_mlme_mcgrp.id, gfp);
8623 return;
8624
8625 nla_put_failure:
8626 genlmsg_cancel(msg, hdr);
8627 nlmsg_free(msg);
8628 }
8629
8630 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8631 const u8 *addr, gfp_t gfp)
8632 {
8633 struct wireless_dev *wdev = dev->ieee80211_ptr;
8634 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8635 struct sk_buff *msg;
8636 void *hdr;
8637 int err;
8638 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
8639
8640 if (!nlportid)
8641 return false;
8642
8643 msg = nlmsg_new(100, gfp);
8644 if (!msg)
8645 return true;
8646
8647 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8648 if (!hdr) {
8649 nlmsg_free(msg);
8650 return true;
8651 }
8652
8653 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8654 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8655 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8656 goto nla_put_failure;
8657
8658 err = genlmsg_end(msg, hdr);
8659 if (err < 0) {
8660 nlmsg_free(msg);
8661 return true;
8662 }
8663
8664 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8665 return true;
8666
8667 nla_put_failure:
8668 genlmsg_cancel(msg, hdr);
8669 nlmsg_free(msg);
8670 return true;
8671 }
8672
8673 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8674 {
8675 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8676 addr, gfp);
8677 }
8678
8679 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8680 const u8 *addr, gfp_t gfp)
8681 {
8682 return __nl80211_unexpected_frame(dev,
8683 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8684 addr, gfp);
8685 }
8686
8687 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8688 struct wireless_dev *wdev, u32 nlportid,
8689 int freq, int sig_dbm,
8690 const u8 *buf, size_t len, gfp_t gfp)
8691 {
8692 struct net_device *netdev = wdev->netdev;
8693 struct sk_buff *msg;
8694 void *hdr;
8695
8696 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8697 if (!msg)
8698 return -ENOMEM;
8699
8700 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8701 if (!hdr) {
8702 nlmsg_free(msg);
8703 return -ENOMEM;
8704 }
8705
8706 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8707 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8708 netdev->ifindex)) ||
8709 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8710 (sig_dbm &&
8711 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8712 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8713 goto nla_put_failure;
8714
8715 genlmsg_end(msg, hdr);
8716
8717 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8718
8719 nla_put_failure:
8720 genlmsg_cancel(msg, hdr);
8721 nlmsg_free(msg);
8722 return -ENOBUFS;
8723 }
8724
8725 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8726 struct wireless_dev *wdev, u64 cookie,
8727 const u8 *buf, size_t len, bool ack,
8728 gfp_t gfp)
8729 {
8730 struct net_device *netdev = wdev->netdev;
8731 struct sk_buff *msg;
8732 void *hdr;
8733
8734 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8735 if (!msg)
8736 return;
8737
8738 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8739 if (!hdr) {
8740 nlmsg_free(msg);
8741 return;
8742 }
8743
8744 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8745 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8746 netdev->ifindex)) ||
8747 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8748 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8749 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8750 goto nla_put_failure;
8751
8752 genlmsg_end(msg, hdr);
8753
8754 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8755 return;
8756
8757 nla_put_failure:
8758 genlmsg_cancel(msg, hdr);
8759 nlmsg_free(msg);
8760 }
8761
8762 void
8763 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8764 struct net_device *netdev,
8765 enum nl80211_cqm_rssi_threshold_event rssi_event,
8766 gfp_t gfp)
8767 {
8768 struct sk_buff *msg;
8769 struct nlattr *pinfoattr;
8770 void *hdr;
8771
8772 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8773 if (!msg)
8774 return;
8775
8776 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8777 if (!hdr) {
8778 nlmsg_free(msg);
8779 return;
8780 }
8781
8782 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8783 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8784 goto nla_put_failure;
8785
8786 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8787 if (!pinfoattr)
8788 goto nla_put_failure;
8789
8790 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8791 rssi_event))
8792 goto nla_put_failure;
8793
8794 nla_nest_end(msg, pinfoattr);
8795
8796 genlmsg_end(msg, hdr);
8797
8798 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8799 nl80211_mlme_mcgrp.id, gfp);
8800 return;
8801
8802 nla_put_failure:
8803 genlmsg_cancel(msg, hdr);
8804 nlmsg_free(msg);
8805 }
8806
8807 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8808 struct net_device *netdev, const u8 *bssid,
8809 const u8 *replay_ctr, gfp_t gfp)
8810 {
8811 struct sk_buff *msg;
8812 struct nlattr *rekey_attr;
8813 void *hdr;
8814
8815 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8816 if (!msg)
8817 return;
8818
8819 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8820 if (!hdr) {
8821 nlmsg_free(msg);
8822 return;
8823 }
8824
8825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8826 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8827 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8828 goto nla_put_failure;
8829
8830 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8831 if (!rekey_attr)
8832 goto nla_put_failure;
8833
8834 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8835 NL80211_REPLAY_CTR_LEN, replay_ctr))
8836 goto nla_put_failure;
8837
8838 nla_nest_end(msg, rekey_attr);
8839
8840 genlmsg_end(msg, hdr);
8841
8842 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8843 nl80211_mlme_mcgrp.id, gfp);
8844 return;
8845
8846 nla_put_failure:
8847 genlmsg_cancel(msg, hdr);
8848 nlmsg_free(msg);
8849 }
8850
8851 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8852 struct net_device *netdev, int index,
8853 const u8 *bssid, bool preauth, gfp_t gfp)
8854 {
8855 struct sk_buff *msg;
8856 struct nlattr *attr;
8857 void *hdr;
8858
8859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8860 if (!msg)
8861 return;
8862
8863 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8864 if (!hdr) {
8865 nlmsg_free(msg);
8866 return;
8867 }
8868
8869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8871 goto nla_put_failure;
8872
8873 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8874 if (!attr)
8875 goto nla_put_failure;
8876
8877 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8878 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8879 (preauth &&
8880 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8881 goto nla_put_failure;
8882
8883 nla_nest_end(msg, attr);
8884
8885 genlmsg_end(msg, hdr);
8886
8887 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8888 nl80211_mlme_mcgrp.id, gfp);
8889 return;
8890
8891 nla_put_failure:
8892 genlmsg_cancel(msg, hdr);
8893 nlmsg_free(msg);
8894 }
8895
8896 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8897 struct net_device *netdev,
8898 struct cfg80211_chan_def *chandef, gfp_t gfp)
8899 {
8900 struct sk_buff *msg;
8901 void *hdr;
8902
8903 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8904 if (!msg)
8905 return;
8906
8907 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8908 if (!hdr) {
8909 nlmsg_free(msg);
8910 return;
8911 }
8912
8913 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8914 goto nla_put_failure;
8915
8916 if (nl80211_send_chandef(msg, chandef))
8917 goto nla_put_failure;
8918
8919 genlmsg_end(msg, hdr);
8920
8921 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8922 nl80211_mlme_mcgrp.id, gfp);
8923 return;
8924
8925 nla_put_failure:
8926 genlmsg_cancel(msg, hdr);
8927 nlmsg_free(msg);
8928 }
8929
8930 void
8931 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8932 struct net_device *netdev, const u8 *peer,
8933 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8934 {
8935 struct sk_buff *msg;
8936 struct nlattr *pinfoattr;
8937 void *hdr;
8938
8939 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8940 if (!msg)
8941 return;
8942
8943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8944 if (!hdr) {
8945 nlmsg_free(msg);
8946 return;
8947 }
8948
8949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8951 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8952 goto nla_put_failure;
8953
8954 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8955 if (!pinfoattr)
8956 goto nla_put_failure;
8957
8958 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8959 goto nla_put_failure;
8960
8961 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8962 goto nla_put_failure;
8963
8964 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8965 goto nla_put_failure;
8966
8967 nla_nest_end(msg, pinfoattr);
8968
8969 genlmsg_end(msg, hdr);
8970
8971 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8972 nl80211_mlme_mcgrp.id, gfp);
8973 return;
8974
8975 nla_put_failure:
8976 genlmsg_cancel(msg, hdr);
8977 nlmsg_free(msg);
8978 }
8979
8980 void
8981 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8982 struct net_device *netdev, const u8 *peer,
8983 u32 num_packets, gfp_t gfp)
8984 {
8985 struct sk_buff *msg;
8986 struct nlattr *pinfoattr;
8987 void *hdr;
8988
8989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8990 if (!msg)
8991 return;
8992
8993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8994 if (!hdr) {
8995 nlmsg_free(msg);
8996 return;
8997 }
8998
8999 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9000 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9001 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
9002 goto nla_put_failure;
9003
9004 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
9005 if (!pinfoattr)
9006 goto nla_put_failure;
9007
9008 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
9009 goto nla_put_failure;
9010
9011 nla_nest_end(msg, pinfoattr);
9012
9013 genlmsg_end(msg, hdr);
9014
9015 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9016 nl80211_mlme_mcgrp.id, gfp);
9017 return;
9018
9019 nla_put_failure:
9020 genlmsg_cancel(msg, hdr);
9021 nlmsg_free(msg);
9022 }
9023
9024 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
9025 u64 cookie, bool acked, gfp_t gfp)
9026 {
9027 struct wireless_dev *wdev = dev->ieee80211_ptr;
9028 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9029 struct sk_buff *msg;
9030 void *hdr;
9031 int err;
9032
9033 trace_cfg80211_probe_status(dev, addr, cookie, acked);
9034
9035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9036
9037 if (!msg)
9038 return;
9039
9040 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
9041 if (!hdr) {
9042 nlmsg_free(msg);
9043 return;
9044 }
9045
9046 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9047 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9048 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9049 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
9050 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
9051 goto nla_put_failure;
9052
9053 err = genlmsg_end(msg, hdr);
9054 if (err < 0) {
9055 nlmsg_free(msg);
9056 return;
9057 }
9058
9059 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9060 nl80211_mlme_mcgrp.id, gfp);
9061 return;
9062
9063 nla_put_failure:
9064 genlmsg_cancel(msg, hdr);
9065 nlmsg_free(msg);
9066 }
9067 EXPORT_SYMBOL(cfg80211_probe_status);
9068
9069 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
9070 const u8 *frame, size_t len,
9071 int freq, int sig_dbm)
9072 {
9073 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9074 struct sk_buff *msg;
9075 void *hdr;
9076 struct cfg80211_beacon_registration *reg;
9077
9078 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
9079
9080 spin_lock_bh(&rdev->beacon_registrations_lock);
9081 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9082 msg = nlmsg_new(len + 100, GFP_ATOMIC);
9083 if (!msg) {
9084 spin_unlock_bh(&rdev->beacon_registrations_lock);
9085 return;
9086 }
9087
9088 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9089 if (!hdr)
9090 goto nla_put_failure;
9091
9092 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9093 (freq &&
9094 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
9095 (sig_dbm &&
9096 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9097 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
9098 goto nla_put_failure;
9099
9100 genlmsg_end(msg, hdr);
9101
9102 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
9103 }
9104 spin_unlock_bh(&rdev->beacon_registrations_lock);
9105 return;
9106
9107 nla_put_failure:
9108 spin_unlock_bh(&rdev->beacon_registrations_lock);
9109 if (hdr)
9110 genlmsg_cancel(msg, hdr);
9111 nlmsg_free(msg);
9112 }
9113 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
9114
9115 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
9116 enum nl80211_tdls_operation oper,
9117 u16 reason_code, gfp_t gfp)
9118 {
9119 struct wireless_dev *wdev = dev->ieee80211_ptr;
9120 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9121 struct sk_buff *msg;
9122 void *hdr;
9123 int err;
9124
9125 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
9126 reason_code);
9127
9128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9129 if (!msg)
9130 return;
9131
9132 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
9133 if (!hdr) {
9134 nlmsg_free(msg);
9135 return;
9136 }
9137
9138 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9139 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9140 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
9141 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
9142 (reason_code > 0 &&
9143 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
9144 goto nla_put_failure;
9145
9146 err = genlmsg_end(msg, hdr);
9147 if (err < 0) {
9148 nlmsg_free(msg);
9149 return;
9150 }
9151
9152 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9153 nl80211_mlme_mcgrp.id, gfp);
9154 return;
9155
9156 nla_put_failure:
9157 genlmsg_cancel(msg, hdr);
9158 nlmsg_free(msg);
9159 }
9160 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
9161
9162 static int nl80211_netlink_notify(struct notifier_block * nb,
9163 unsigned long state,
9164 void *_notify)
9165 {
9166 struct netlink_notify *notify = _notify;
9167 struct cfg80211_registered_device *rdev;
9168 struct wireless_dev *wdev;
9169 struct cfg80211_beacon_registration *reg, *tmp;
9170
9171 if (state != NETLINK_URELEASE)
9172 return NOTIFY_DONE;
9173
9174 rcu_read_lock();
9175
9176 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
9177 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
9178 cfg80211_mlme_unregister_socket(wdev, notify->portid);
9179
9180 spin_lock_bh(&rdev->beacon_registrations_lock);
9181 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
9182 list) {
9183 if (reg->nlportid == notify->portid) {
9184 list_del(&reg->list);
9185 kfree(reg);
9186 break;
9187 }
9188 }
9189 spin_unlock_bh(&rdev->beacon_registrations_lock);
9190 }
9191
9192 rcu_read_unlock();
9193
9194 return NOTIFY_DONE;
9195 }
9196
9197 static struct notifier_block nl80211_netlink_notifier = {
9198 .notifier_call = nl80211_netlink_notify,
9199 };
9200
9201 /* initialisation/exit functions */
9202
9203 int nl80211_init(void)
9204 {
9205 int err;
9206
9207 err = genl_register_family_with_ops(&nl80211_fam,
9208 nl80211_ops, ARRAY_SIZE(nl80211_ops));
9209 if (err)
9210 return err;
9211
9212 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
9213 if (err)
9214 goto err_out;
9215
9216 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
9217 if (err)
9218 goto err_out;
9219
9220 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
9221 if (err)
9222 goto err_out;
9223
9224 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
9225 if (err)
9226 goto err_out;
9227
9228 #ifdef CONFIG_NL80211_TESTMODE
9229 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
9230 if (err)
9231 goto err_out;
9232 #endif
9233
9234 err = netlink_register_notifier(&nl80211_netlink_notifier);
9235 if (err)
9236 goto err_out;
9237
9238 return 0;
9239 err_out:
9240 genl_unregister_family(&nl80211_fam);
9241 return err;
9242 }
9243
9244 void nl80211_exit(void)
9245 {
9246 netlink_unregister_notifier(&nl80211_netlink_notifier);
9247 genl_unregister_family(&nl80211_fam);
9248 }
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