projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
cfg80211: return private regdom for self-managed devices
[deliverable/linux.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 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 };
401
402 /* policy for the key attributes */
403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
404 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
405 [NL80211_KEY_IDX] = { .type = NLA_U8 },
406 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
407 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
408 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
409 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
410 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
411 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
412 };
413
414 /* policy for the key default flags */
415 static const struct nla_policy
416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
417 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
418 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
419 };
420
421 /* policy for WoWLAN attributes */
422 static const struct nla_policy
423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
424 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
426 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
428 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
433 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
434 };
435
436 static const struct nla_policy
437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
438 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
439 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
440 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
441 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
442 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
443 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
446 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
448 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
449 },
450 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
451 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
452 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
453 };
454
455 /* policy for coalesce rule attributes */
456 static const struct nla_policy
457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
458 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
459 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
460 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
461 };
462
463 /* policy for GTK rekey offload attributes */
464 static const struct nla_policy
465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
466 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
467 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
468 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
469 };
470
471 static const struct nla_policy
472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
473 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
474 .len = IEEE80211_MAX_SSID_LEN },
475 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
476 };
477
478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
479 struct netlink_callback *cb,
480 struct cfg80211_registered_device **rdev,
481 struct wireless_dev **wdev)
482 {
483 int err;
484
485 rtnl_lock();
486
487 if (!cb->args[0]) {
488 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
489 nl80211_fam.attrbuf, nl80211_fam.maxattr,
490 nl80211_policy);
491 if (err)
492 goto out_unlock;
493
494 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
495 nl80211_fam.attrbuf);
496 if (IS_ERR(*wdev)) {
497 err = PTR_ERR(*wdev);
498 goto out_unlock;
499 }
500 *rdev = wiphy_to_rdev((*wdev)->wiphy);
501 /* 0 is the first index - add 1 to parse only once */
502 cb->args[0] = (*rdev)->wiphy_idx + 1;
503 cb->args[1] = (*wdev)->identifier;
504 } else {
505 /* subtract the 1 again here */
506 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
507 struct wireless_dev *tmp;
508
509 if (!wiphy) {
510 err = -ENODEV;
511 goto out_unlock;
512 }
513 *rdev = wiphy_to_rdev(wiphy);
514 *wdev = NULL;
515
516 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
517 if (tmp->identifier == cb->args[1]) {
518 *wdev = tmp;
519 break;
520 }
521 }
522
523 if (!*wdev) {
524 err = -ENODEV;
525 goto out_unlock;
526 }
527 }
528
529 return 0;
530 out_unlock:
531 rtnl_unlock();
532 return err;
533 }
534
535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
536 {
537 rtnl_unlock();
538 }
539
540 /* IE validation */
541 static bool is_valid_ie_attr(const struct nlattr *attr)
542 {
543 const u8 *pos;
544 int len;
545
546 if (!attr)
547 return true;
548
549 pos = nla_data(attr);
550 len = nla_len(attr);
551
552 while (len) {
553 u8 elemlen;
554
555 if (len < 2)
556 return false;
557 len -= 2;
558
559 elemlen = pos[1];
560 if (elemlen > len)
561 return false;
562
563 len -= elemlen;
564 pos += 2 + elemlen;
565 }
566
567 return true;
568 }
569
570 /* message building helper */
571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
572 int flags, u8 cmd)
573 {
574 /* since there is no private header just add the generic one */
575 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
576 }
577
578 static int nl80211_msg_put_channel(struct sk_buff *msg,
579 struct ieee80211_channel *chan,
580 bool large)
581 {
582 /* Some channels must be completely excluded from the
583 * list to protect old user-space tools from breaking
584 */
585 if (!large && chan->flags &
586 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
587 return 0;
588
589 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
590 chan->center_freq))
591 goto nla_put_failure;
592
593 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
594 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
595 goto nla_put_failure;
596 if (chan->flags & IEEE80211_CHAN_NO_IR) {
597 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
598 goto nla_put_failure;
599 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
600 goto nla_put_failure;
601 }
602 if (chan->flags & IEEE80211_CHAN_RADAR) {
603 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
604 goto nla_put_failure;
605 if (large) {
606 u32 time;
607
608 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
609
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
611 chan->dfs_state))
612 goto nla_put_failure;
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
614 time))
615 goto nla_put_failure;
616 if (nla_put_u32(msg,
617 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
618 chan->dfs_cac_ms))
619 goto nla_put_failure;
620 }
621 }
622
623 if (large) {
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
644 goto nla_put_failure;
645 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
647 goto nla_put_failure;
648 }
649
650 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
651 DBM_TO_MBM(chan->max_power)))
652 goto nla_put_failure;
653
654 return 0;
655
656 nla_put_failure:
657 return -ENOBUFS;
658 }
659
660 /* netlink command implementations */
661
662 struct key_parse {
663 struct key_params p;
664 int idx;
665 int type;
666 bool def, defmgmt;
667 bool def_uni, def_multi;
668 };
669
670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
671 {
672 struct nlattr *tb[NL80211_KEY_MAX + 1];
673 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
674 nl80211_key_policy);
675 if (err)
676 return err;
677
678 k->def = !!tb[NL80211_KEY_DEFAULT];
679 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
680
681 if (k->def) {
682 k->def_uni = true;
683 k->def_multi = true;
684 }
685 if (k->defmgmt)
686 k->def_multi = true;
687
688 if (tb[NL80211_KEY_IDX])
689 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
690
691 if (tb[NL80211_KEY_DATA]) {
692 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
693 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
694 }
695
696 if (tb[NL80211_KEY_SEQ]) {
697 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
698 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
699 }
700
701 if (tb[NL80211_KEY_CIPHER])
702 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
703
704 if (tb[NL80211_KEY_TYPE]) {
705 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
706 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
707 return -EINVAL;
708 }
709
710 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
711 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
712 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
713 tb[NL80211_KEY_DEFAULT_TYPES],
714 nl80211_key_default_policy);
715 if (err)
716 return err;
717
718 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
719 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
720 }
721
722 return 0;
723 }
724
725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
726 {
727 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
728 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
729 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
730 }
731
732 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
733 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
734 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
735 }
736
737 if (info->attrs[NL80211_ATTR_KEY_IDX])
738 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
739
740 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
741 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
742
743 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
744 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
745
746 if (k->def) {
747 k->def_uni = true;
748 k->def_multi = true;
749 }
750 if (k->defmgmt)
751 k->def_multi = true;
752
753 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
754 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
755 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
756 return -EINVAL;
757 }
758
759 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
760 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
761 int err = nla_parse_nested(
762 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
763 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
764 nl80211_key_default_policy);
765 if (err)
766 return err;
767
768 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
769 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
770 }
771
772 return 0;
773 }
774
775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
776 {
777 int err;
778
779 memset(k, 0, sizeof(*k));
780 k->idx = -1;
781 k->type = -1;
782
783 if (info->attrs[NL80211_ATTR_KEY])
784 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
785 else
786 err = nl80211_parse_key_old(info, k);
787
788 if (err)
789 return err;
790
791 if (k->def && k->defmgmt)
792 return -EINVAL;
793
794 if (k->defmgmt) {
795 if (k->def_uni || !k->def_multi)
796 return -EINVAL;
797 }
798
799 if (k->idx != -1) {
800 if (k->defmgmt) {
801 if (k->idx < 4 || k->idx > 5)
802 return -EINVAL;
803 } else if (k->def) {
804 if (k->idx < 0 || k->idx > 3)
805 return -EINVAL;
806 } else {
807 if (k->idx < 0 || k->idx > 5)
808 return -EINVAL;
809 }
810 }
811
812 return 0;
813 }
814
815 static struct cfg80211_cached_keys *
816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
817 struct nlattr *keys, bool *no_ht)
818 {
819 struct key_parse parse;
820 struct nlattr *key;
821 struct cfg80211_cached_keys *result;
822 int rem, err, def = 0;
823
824 result = kzalloc(sizeof(*result), GFP_KERNEL);
825 if (!result)
826 return ERR_PTR(-ENOMEM);
827
828 result->def = -1;
829 result->defmgmt = -1;
830
831 nla_for_each_nested(key, keys, rem) {
832 memset(&parse, 0, sizeof(parse));
833 parse.idx = -1;
834
835 err = nl80211_parse_key_new(key, &parse);
836 if (err)
837 goto error;
838 err = -EINVAL;
839 if (!parse.p.key)
840 goto error;
841 if (parse.idx < 0 || parse.idx > 4)
842 goto error;
843 if (parse.def) {
844 if (def)
845 goto error;
846 def = 1;
847 result->def = parse.idx;
848 if (!parse.def_uni || !parse.def_multi)
849 goto error;
850 } else if (parse.defmgmt)
851 goto error;
852 err = cfg80211_validate_key_settings(rdev, &parse.p,
853 parse.idx, false, NULL);
854 if (err)
855 goto error;
856 result->params[parse.idx].cipher = parse.p.cipher;
857 result->params[parse.idx].key_len = parse.p.key_len;
858 result->params[parse.idx].key = result->data[parse.idx];
859 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
860
861 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
862 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
863 if (no_ht)
864 *no_ht = true;
865 }
866 }
867
868 return result;
869 error:
870 kfree(result);
871 return ERR_PTR(err);
872 }
873
874 static int nl80211_key_allowed(struct wireless_dev *wdev)
875 {
876 ASSERT_WDEV_LOCK(wdev);
877
878 switch (wdev->iftype) {
879 case NL80211_IFTYPE_AP:
880 case NL80211_IFTYPE_AP_VLAN:
881 case NL80211_IFTYPE_P2P_GO:
882 case NL80211_IFTYPE_MESH_POINT:
883 break;
884 case NL80211_IFTYPE_ADHOC:
885 case NL80211_IFTYPE_STATION:
886 case NL80211_IFTYPE_P2P_CLIENT:
887 if (!wdev->current_bss)
888 return -ENOLINK;
889 break;
890 case NL80211_IFTYPE_UNSPECIFIED:
891 case NL80211_IFTYPE_OCB:
892 case NL80211_IFTYPE_MONITOR:
893 case NL80211_IFTYPE_P2P_DEVICE:
894 case NL80211_IFTYPE_WDS:
895 case NUM_NL80211_IFTYPES:
896 return -EINVAL;
897 }
898
899 return 0;
900 }
901
902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
903 struct nlattr *tb)
904 {
905 struct ieee80211_channel *chan;
906
907 if (tb == NULL)
908 return NULL;
909 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
910 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
911 return NULL;
912 return chan;
913 }
914
915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
916 {
917 struct nlattr *nl_modes = nla_nest_start(msg, attr);
918 int i;
919
920 if (!nl_modes)
921 goto nla_put_failure;
922
923 i = 0;
924 while (ifmodes) {
925 if ((ifmodes & 1) && nla_put_flag(msg, i))
926 goto nla_put_failure;
927 ifmodes >>= 1;
928 i++;
929 }
930
931 nla_nest_end(msg, nl_modes);
932 return 0;
933
934 nla_put_failure:
935 return -ENOBUFS;
936 }
937
938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
939 struct sk_buff *msg,
940 bool large)
941 {
942 struct nlattr *nl_combis;
943 int i, j;
944
945 nl_combis = nla_nest_start(msg,
946 NL80211_ATTR_INTERFACE_COMBINATIONS);
947 if (!nl_combis)
948 goto nla_put_failure;
949
950 for (i = 0; i < wiphy->n_iface_combinations; i++) {
951 const struct ieee80211_iface_combination *c;
952 struct nlattr *nl_combi, *nl_limits;
953
954 c = &wiphy->iface_combinations[i];
955
956 nl_combi = nla_nest_start(msg, i + 1);
957 if (!nl_combi)
958 goto nla_put_failure;
959
960 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
961 if (!nl_limits)
962 goto nla_put_failure;
963
964 for (j = 0; j < c->n_limits; j++) {
965 struct nlattr *nl_limit;
966
967 nl_limit = nla_nest_start(msg, j + 1);
968 if (!nl_limit)
969 goto nla_put_failure;
970 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
971 c->limits[j].max))
972 goto nla_put_failure;
973 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
974 c->limits[j].types))
975 goto nla_put_failure;
976 nla_nest_end(msg, nl_limit);
977 }
978
979 nla_nest_end(msg, nl_limits);
980
981 if (c->beacon_int_infra_match &&
982 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
983 goto nla_put_failure;
984 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
985 c->num_different_channels) ||
986 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
987 c->max_interfaces))
988 goto nla_put_failure;
989 if (large &&
990 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
991 c->radar_detect_widths) ||
992 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
993 c->radar_detect_regions)))
994 goto nla_put_failure;
995
996 nla_nest_end(msg, nl_combi);
997 }
998
999 nla_nest_end(msg, nl_combis);
1000
1001 return 0;
1002 nla_put_failure:
1003 return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008 struct sk_buff *msg)
1009 {
1010 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011 struct nlattr *nl_tcp;
1012
1013 if (!tcp)
1014 return 0;
1015
1016 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017 if (!nl_tcp)
1018 return -ENOBUFS;
1019
1020 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021 tcp->data_payload_max))
1022 return -ENOBUFS;
1023
1024 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025 tcp->data_payload_max))
1026 return -ENOBUFS;
1027
1028 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029 return -ENOBUFS;
1030
1031 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032 sizeof(*tcp->tok), tcp->tok))
1033 return -ENOBUFS;
1034
1035 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036 tcp->data_interval_max))
1037 return -ENOBUFS;
1038
1039 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040 tcp->wake_payload_max))
1041 return -ENOBUFS;
1042
1043 nla_nest_end(msg, nl_tcp);
1044 return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048 struct cfg80211_registered_device *rdev,
1049 bool large)
1050 {
1051 struct nlattr *nl_wowlan;
1052
1053 if (!rdev->wiphy.wowlan)
1054 return 0;
1055
1056 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057 if (!nl_wowlan)
1058 return -ENOBUFS;
1059
1060 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076 return -ENOBUFS;
1077
1078 if (rdev->wiphy.wowlan->n_patterns) {
1079 struct nl80211_pattern_support pat = {
1080 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084 };
1085
1086 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087 sizeof(pat), &pat))
1088 return -ENOBUFS;
1089 }
1090
1091 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1092 return -ENOBUFS;
1093
1094 /* TODO: send wowlan net detect */
1095
1096 nla_nest_end(msg, nl_wowlan);
1097
1098 return 0;
1099 }
1100 #endif
1101
1102 static int nl80211_send_coalesce(struct sk_buff *msg,
1103 struct cfg80211_registered_device *rdev)
1104 {
1105 struct nl80211_coalesce_rule_support rule;
1106
1107 if (!rdev->wiphy.coalesce)
1108 return 0;
1109
1110 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1111 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1112 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1113 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1114 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1115 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1116
1117 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1118 return -ENOBUFS;
1119
1120 return 0;
1121 }
1122
1123 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1124 struct ieee80211_supported_band *sband)
1125 {
1126 struct nlattr *nl_rates, *nl_rate;
1127 struct ieee80211_rate *rate;
1128 int i;
1129
1130 /* add HT info */
1131 if (sband->ht_cap.ht_supported &&
1132 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1133 sizeof(sband->ht_cap.mcs),
1134 &sband->ht_cap.mcs) ||
1135 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1136 sband->ht_cap.cap) ||
1137 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1138 sband->ht_cap.ampdu_factor) ||
1139 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1140 sband->ht_cap.ampdu_density)))
1141 return -ENOBUFS;
1142
1143 /* add VHT info */
1144 if (sband->vht_cap.vht_supported &&
1145 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1146 sizeof(sband->vht_cap.vht_mcs),
1147 &sband->vht_cap.vht_mcs) ||
1148 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1149 sband->vht_cap.cap)))
1150 return -ENOBUFS;
1151
1152 /* add bitrates */
1153 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1154 if (!nl_rates)
1155 return -ENOBUFS;
1156
1157 for (i = 0; i < sband->n_bitrates; i++) {
1158 nl_rate = nla_nest_start(msg, i);
1159 if (!nl_rate)
1160 return -ENOBUFS;
1161
1162 rate = &sband->bitrates[i];
1163 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1164 rate->bitrate))
1165 return -ENOBUFS;
1166 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1167 nla_put_flag(msg,
1168 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1169 return -ENOBUFS;
1170
1171 nla_nest_end(msg, nl_rate);
1172 }
1173
1174 nla_nest_end(msg, nl_rates);
1175
1176 return 0;
1177 }
1178
1179 static int
1180 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1181 const struct ieee80211_txrx_stypes *mgmt_stypes)
1182 {
1183 u16 stypes;
1184 struct nlattr *nl_ftypes, *nl_ifs;
1185 enum nl80211_iftype ift;
1186 int i;
1187
1188 if (!mgmt_stypes)
1189 return 0;
1190
1191 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1192 if (!nl_ifs)
1193 return -ENOBUFS;
1194
1195 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1196 nl_ftypes = nla_nest_start(msg, ift);
1197 if (!nl_ftypes)
1198 return -ENOBUFS;
1199 i = 0;
1200 stypes = mgmt_stypes[ift].tx;
1201 while (stypes) {
1202 if ((stypes & 1) &&
1203 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1204 (i << 4) | IEEE80211_FTYPE_MGMT))
1205 return -ENOBUFS;
1206 stypes >>= 1;
1207 i++;
1208 }
1209 nla_nest_end(msg, nl_ftypes);
1210 }
1211
1212 nla_nest_end(msg, nl_ifs);
1213
1214 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1215 if (!nl_ifs)
1216 return -ENOBUFS;
1217
1218 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1219 nl_ftypes = nla_nest_start(msg, ift);
1220 if (!nl_ftypes)
1221 return -ENOBUFS;
1222 i = 0;
1223 stypes = mgmt_stypes[ift].rx;
1224 while (stypes) {
1225 if ((stypes & 1) &&
1226 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1227 (i << 4) | IEEE80211_FTYPE_MGMT))
1228 return -ENOBUFS;
1229 stypes >>= 1;
1230 i++;
1231 }
1232 nla_nest_end(msg, nl_ftypes);
1233 }
1234 nla_nest_end(msg, nl_ifs);
1235
1236 return 0;
1237 }
1238
1239 struct nl80211_dump_wiphy_state {
1240 s64 filter_wiphy;
1241 long start;
1242 long split_start, band_start, chan_start;
1243 bool split;
1244 };
1245
1246 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1247 enum nl80211_commands cmd,
1248 struct sk_buff *msg, u32 portid, u32 seq,
1249 int flags, struct nl80211_dump_wiphy_state *state)
1250 {
1251 void *hdr;
1252 struct nlattr *nl_bands, *nl_band;
1253 struct nlattr *nl_freqs, *nl_freq;
1254 struct nlattr *nl_cmds;
1255 enum ieee80211_band band;
1256 struct ieee80211_channel *chan;
1257 int i;
1258 const struct ieee80211_txrx_stypes *mgmt_stypes =
1259 rdev->wiphy.mgmt_stypes;
1260 u32 features;
1261
1262 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1263 if (!hdr)
1264 return -ENOBUFS;
1265
1266 if (WARN_ON(!state))
1267 return -EINVAL;
1268
1269 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1270 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1271 wiphy_name(&rdev->wiphy)) ||
1272 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1273 cfg80211_rdev_list_generation))
1274 goto nla_put_failure;
1275
1276 if (cmd != NL80211_CMD_NEW_WIPHY)
1277 goto finish;
1278
1279 switch (state->split_start) {
1280 case 0:
1281 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1282 rdev->wiphy.retry_short) ||
1283 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1284 rdev->wiphy.retry_long) ||
1285 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1286 rdev->wiphy.frag_threshold) ||
1287 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1288 rdev->wiphy.rts_threshold) ||
1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1290 rdev->wiphy.coverage_class) ||
1291 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1292 rdev->wiphy.max_scan_ssids) ||
1293 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1294 rdev->wiphy.max_sched_scan_ssids) ||
1295 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1296 rdev->wiphy.max_scan_ie_len) ||
1297 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1298 rdev->wiphy.max_sched_scan_ie_len) ||
1299 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1300 rdev->wiphy.max_match_sets))
1301 goto nla_put_failure;
1302
1303 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1304 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1305 goto nla_put_failure;
1306 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1307 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1308 goto nla_put_failure;
1309 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1311 goto nla_put_failure;
1312 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1313 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1314 goto nla_put_failure;
1315 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1316 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1317 goto nla_put_failure;
1318 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1319 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1320 goto nla_put_failure;
1321 state->split_start++;
1322 if (state->split)
1323 break;
1324 case 1:
1325 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1326 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1327 rdev->wiphy.cipher_suites))
1328 goto nla_put_failure;
1329
1330 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1331 rdev->wiphy.max_num_pmkids))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1335 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1336 goto nla_put_failure;
1337
1338 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1339 rdev->wiphy.available_antennas_tx) ||
1340 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1341 rdev->wiphy.available_antennas_rx))
1342 goto nla_put_failure;
1343
1344 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1345 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1346 rdev->wiphy.probe_resp_offload))
1347 goto nla_put_failure;
1348
1349 if ((rdev->wiphy.available_antennas_tx ||
1350 rdev->wiphy.available_antennas_rx) &&
1351 rdev->ops->get_antenna) {
1352 u32 tx_ant = 0, rx_ant = 0;
1353 int res;
1354 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1355 if (!res) {
1356 if (nla_put_u32(msg,
1357 NL80211_ATTR_WIPHY_ANTENNA_TX,
1358 tx_ant) ||
1359 nla_put_u32(msg,
1360 NL80211_ATTR_WIPHY_ANTENNA_RX,
1361 rx_ant))
1362 goto nla_put_failure;
1363 }
1364 }
1365
1366 state->split_start++;
1367 if (state->split)
1368 break;
1369 case 2:
1370 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1371 rdev->wiphy.interface_modes))
1372 goto nla_put_failure;
1373 state->split_start++;
1374 if (state->split)
1375 break;
1376 case 3:
1377 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1378 if (!nl_bands)
1379 goto nla_put_failure;
1380
1381 for (band = state->band_start;
1382 band < IEEE80211_NUM_BANDS; band++) {
1383 struct ieee80211_supported_band *sband;
1384
1385 sband = rdev->wiphy.bands[band];
1386
1387 if (!sband)
1388 continue;
1389
1390 nl_band = nla_nest_start(msg, band);
1391 if (!nl_band)
1392 goto nla_put_failure;
1393
1394 switch (state->chan_start) {
1395 case 0:
1396 if (nl80211_send_band_rateinfo(msg, sband))
1397 goto nla_put_failure;
1398 state->chan_start++;
1399 if (state->split)
1400 break;
1401 default:
1402 /* add frequencies */
1403 nl_freqs = nla_nest_start(
1404 msg, NL80211_BAND_ATTR_FREQS);
1405 if (!nl_freqs)
1406 goto nla_put_failure;
1407
1408 for (i = state->chan_start - 1;
1409 i < sband->n_channels;
1410 i++) {
1411 nl_freq = nla_nest_start(msg, i);
1412 if (!nl_freq)
1413 goto nla_put_failure;
1414
1415 chan = &sband->channels[i];
1416
1417 if (nl80211_msg_put_channel(
1418 msg, chan,
1419 state->split))
1420 goto nla_put_failure;
1421
1422 nla_nest_end(msg, nl_freq);
1423 if (state->split)
1424 break;
1425 }
1426 if (i < sband->n_channels)
1427 state->chan_start = i + 2;
1428 else
1429 state->chan_start = 0;
1430 nla_nest_end(msg, nl_freqs);
1431 }
1432
1433 nla_nest_end(msg, nl_band);
1434
1435 if (state->split) {
1436 /* start again here */
1437 if (state->chan_start)
1438 band--;
1439 break;
1440 }
1441 }
1442 nla_nest_end(msg, nl_bands);
1443
1444 if (band < IEEE80211_NUM_BANDS)
1445 state->band_start = band + 1;
1446 else
1447 state->band_start = 0;
1448
1449 /* if bands & channels are done, continue outside */
1450 if (state->band_start == 0 && state->chan_start == 0)
1451 state->split_start++;
1452 if (state->split)
1453 break;
1454 case 4:
1455 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1456 if (!nl_cmds)
1457 goto nla_put_failure;
1458
1459 i = 0;
1460 #define CMD(op, n) \
1461 do { \
1462 if (rdev->ops->op) { \
1463 i++; \
1464 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1465 goto nla_put_failure; \
1466 } \
1467 } while (0)
1468
1469 CMD(add_virtual_intf, NEW_INTERFACE);
1470 CMD(change_virtual_intf, SET_INTERFACE);
1471 CMD(add_key, NEW_KEY);
1472 CMD(start_ap, START_AP);
1473 CMD(add_station, NEW_STATION);
1474 CMD(add_mpath, NEW_MPATH);
1475 CMD(update_mesh_config, SET_MESH_CONFIG);
1476 CMD(change_bss, SET_BSS);
1477 CMD(auth, AUTHENTICATE);
1478 CMD(assoc, ASSOCIATE);
1479 CMD(deauth, DEAUTHENTICATE);
1480 CMD(disassoc, DISASSOCIATE);
1481 CMD(join_ibss, JOIN_IBSS);
1482 CMD(join_mesh, JOIN_MESH);
1483 CMD(set_pmksa, SET_PMKSA);
1484 CMD(del_pmksa, DEL_PMKSA);
1485 CMD(flush_pmksa, FLUSH_PMKSA);
1486 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1487 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1488 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1489 CMD(mgmt_tx, FRAME);
1490 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1491 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1492 i++;
1493 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1494 goto nla_put_failure;
1495 }
1496 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1497 rdev->ops->join_mesh) {
1498 i++;
1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1500 goto nla_put_failure;
1501 }
1502 CMD(set_wds_peer, SET_WDS_PEER);
1503 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1504 CMD(tdls_mgmt, TDLS_MGMT);
1505 CMD(tdls_oper, TDLS_OPER);
1506 }
1507 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1508 CMD(sched_scan_start, START_SCHED_SCAN);
1509 CMD(probe_client, PROBE_CLIENT);
1510 CMD(set_noack_map, SET_NOACK_MAP);
1511 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1512 i++;
1513 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1514 goto nla_put_failure;
1515 }
1516 CMD(start_p2p_device, START_P2P_DEVICE);
1517 CMD(set_mcast_rate, SET_MCAST_RATE);
1518 #ifdef CONFIG_NL80211_TESTMODE
1519 CMD(testmode_cmd, TESTMODE);
1520 #endif
1521 if (state->split) {
1522 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1523 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1524 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1525 CMD(channel_switch, CHANNEL_SWITCH);
1526 CMD(set_qos_map, SET_QOS_MAP);
1527 if (rdev->wiphy.features &
1528 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1529 CMD(add_tx_ts, ADD_TX_TS);
1530 }
1531 /* add into the if now */
1532 #undef CMD
1533
1534 if (rdev->ops->connect || rdev->ops->auth) {
1535 i++;
1536 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1537 goto nla_put_failure;
1538 }
1539
1540 if (rdev->ops->disconnect || rdev->ops->deauth) {
1541 i++;
1542 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1543 goto nla_put_failure;
1544 }
1545
1546 nla_nest_end(msg, nl_cmds);
1547 state->split_start++;
1548 if (state->split)
1549 break;
1550 case 5:
1551 if (rdev->ops->remain_on_channel &&
1552 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1553 nla_put_u32(msg,
1554 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1555 rdev->wiphy.max_remain_on_channel_duration))
1556 goto nla_put_failure;
1557
1558 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1559 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1560 goto nla_put_failure;
1561
1562 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1563 goto nla_put_failure;
1564 state->split_start++;
1565 if (state->split)
1566 break;
1567 case 6:
1568 #ifdef CONFIG_PM
1569 if (nl80211_send_wowlan(msg, rdev, state->split))
1570 goto nla_put_failure;
1571 state->split_start++;
1572 if (state->split)
1573 break;
1574 #else
1575 state->split_start++;
1576 #endif
1577 case 7:
1578 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1579 rdev->wiphy.software_iftypes))
1580 goto nla_put_failure;
1581
1582 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1583 state->split))
1584 goto nla_put_failure;
1585
1586 state->split_start++;
1587 if (state->split)
1588 break;
1589 case 8:
1590 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1591 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1592 rdev->wiphy.ap_sme_capa))
1593 goto nla_put_failure;
1594
1595 features = rdev->wiphy.features;
1596 /*
1597 * We can only add the per-channel limit information if the
1598 * dump is split, otherwise it makes it too big. Therefore
1599 * only advertise it in that case.
1600 */
1601 if (state->split)
1602 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1603 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1604 goto nla_put_failure;
1605
1606 if (rdev->wiphy.ht_capa_mod_mask &&
1607 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1608 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1609 rdev->wiphy.ht_capa_mod_mask))
1610 goto nla_put_failure;
1611
1612 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1613 rdev->wiphy.max_acl_mac_addrs &&
1614 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1615 rdev->wiphy.max_acl_mac_addrs))
1616 goto nla_put_failure;
1617
1618 /*
1619 * Any information below this point is only available to
1620 * applications that can deal with it being split. This
1621 * helps ensure that newly added capabilities don't break
1622 * older tools by overrunning their buffers.
1623 *
1624 * We still increment split_start so that in the split
1625 * case we'll continue with more data in the next round,
1626 * but break unconditionally so unsplit data stops here.
1627 */
1628 state->split_start++;
1629 break;
1630 case 9:
1631 if (rdev->wiphy.extended_capabilities &&
1632 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1633 rdev->wiphy.extended_capabilities_len,
1634 rdev->wiphy.extended_capabilities) ||
1635 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1636 rdev->wiphy.extended_capabilities_len,
1637 rdev->wiphy.extended_capabilities_mask)))
1638 goto nla_put_failure;
1639
1640 if (rdev->wiphy.vht_capa_mod_mask &&
1641 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1642 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1643 rdev->wiphy.vht_capa_mod_mask))
1644 goto nla_put_failure;
1645
1646 state->split_start++;
1647 break;
1648 case 10:
1649 if (nl80211_send_coalesce(msg, rdev))
1650 goto nla_put_failure;
1651
1652 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1653 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1654 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1655 goto nla_put_failure;
1656
1657 if (rdev->wiphy.max_ap_assoc_sta &&
1658 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1659 rdev->wiphy.max_ap_assoc_sta))
1660 goto nla_put_failure;
1661
1662 state->split_start++;
1663 break;
1664 case 11:
1665 if (rdev->wiphy.n_vendor_commands) {
1666 const struct nl80211_vendor_cmd_info *info;
1667 struct nlattr *nested;
1668
1669 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1670 if (!nested)
1671 goto nla_put_failure;
1672
1673 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1674 info = &rdev->wiphy.vendor_commands[i].info;
1675 if (nla_put(msg, i + 1, sizeof(*info), info))
1676 goto nla_put_failure;
1677 }
1678 nla_nest_end(msg, nested);
1679 }
1680
1681 if (rdev->wiphy.n_vendor_events) {
1682 const struct nl80211_vendor_cmd_info *info;
1683 struct nlattr *nested;
1684
1685 nested = nla_nest_start(msg,
1686 NL80211_ATTR_VENDOR_EVENTS);
1687 if (!nested)
1688 goto nla_put_failure;
1689
1690 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1691 info = &rdev->wiphy.vendor_events[i];
1692 if (nla_put(msg, i + 1, sizeof(*info), info))
1693 goto nla_put_failure;
1694 }
1695 nla_nest_end(msg, nested);
1696 }
1697 state->split_start++;
1698 break;
1699 case 12:
1700 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1701 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1702 rdev->wiphy.max_num_csa_counters))
1703 goto nla_put_failure;
1704
1705 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1706 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1707 goto nla_put_failure;
1708
1709 /* done */
1710 state->split_start = 0;
1711 break;
1712 }
1713 finish:
1714 return genlmsg_end(msg, hdr);
1715
1716 nla_put_failure:
1717 genlmsg_cancel(msg, hdr);
1718 return -EMSGSIZE;
1719 }
1720
1721 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1722 struct netlink_callback *cb,
1723 struct nl80211_dump_wiphy_state *state)
1724 {
1725 struct nlattr **tb = nl80211_fam.attrbuf;
1726 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1727 tb, nl80211_fam.maxattr, nl80211_policy);
1728 /* ignore parse errors for backward compatibility */
1729 if (ret)
1730 return 0;
1731
1732 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1733 if (tb[NL80211_ATTR_WIPHY])
1734 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1735 if (tb[NL80211_ATTR_WDEV])
1736 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1737 if (tb[NL80211_ATTR_IFINDEX]) {
1738 struct net_device *netdev;
1739 struct cfg80211_registered_device *rdev;
1740 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1741
1742 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1743 if (!netdev)
1744 return -ENODEV;
1745 if (netdev->ieee80211_ptr) {
1746 rdev = wiphy_to_rdev(
1747 netdev->ieee80211_ptr->wiphy);
1748 state->filter_wiphy = rdev->wiphy_idx;
1749 }
1750 }
1751
1752 return 0;
1753 }
1754
1755 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1756 {
1757 int idx = 0, ret;
1758 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1759 struct cfg80211_registered_device *rdev;
1760
1761 rtnl_lock();
1762 if (!state) {
1763 state = kzalloc(sizeof(*state), GFP_KERNEL);
1764 if (!state) {
1765 rtnl_unlock();
1766 return -ENOMEM;
1767 }
1768 state->filter_wiphy = -1;
1769 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1770 if (ret) {
1771 kfree(state);
1772 rtnl_unlock();
1773 return ret;
1774 }
1775 cb->args[0] = (long)state;
1776 }
1777
1778 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1779 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1780 continue;
1781 if (++idx <= state->start)
1782 continue;
1783 if (state->filter_wiphy != -1 &&
1784 state->filter_wiphy != rdev->wiphy_idx)
1785 continue;
1786 /* attempt to fit multiple wiphy data chunks into the skb */
1787 do {
1788 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1789 skb,
1790 NETLINK_CB(cb->skb).portid,
1791 cb->nlh->nlmsg_seq,
1792 NLM_F_MULTI, state);
1793 if (ret < 0) {
1794 /*
1795 * If sending the wiphy data didn't fit (ENOBUFS
1796 * or EMSGSIZE returned), this SKB is still
1797 * empty (so it's not too big because another
1798 * wiphy dataset is already in the skb) and
1799 * we've not tried to adjust the dump allocation
1800 * yet ... then adjust the alloc size to be
1801 * bigger, and return 1 but with the empty skb.
1802 * This results in an empty message being RX'ed
1803 * in userspace, but that is ignored.
1804 *
1805 * We can then retry with the larger buffer.
1806 */
1807 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1808 !skb->len && !state->split &&
1809 cb->min_dump_alloc < 4096) {
1810 cb->min_dump_alloc = 4096;
1811 state->split_start = 0;
1812 rtnl_unlock();
1813 return 1;
1814 }
1815 idx--;
1816 break;
1817 }
1818 } while (state->split_start > 0);
1819 break;
1820 }
1821 rtnl_unlock();
1822
1823 state->start = idx;
1824
1825 return skb->len;
1826 }
1827
1828 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1829 {
1830 kfree((void *)cb->args[0]);
1831 return 0;
1832 }
1833
1834 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1835 {
1836 struct sk_buff *msg;
1837 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1838 struct nl80211_dump_wiphy_state state = {};
1839
1840 msg = nlmsg_new(4096, GFP_KERNEL);
1841 if (!msg)
1842 return -ENOMEM;
1843
1844 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1845 info->snd_portid, info->snd_seq, 0,
1846 &state) < 0) {
1847 nlmsg_free(msg);
1848 return -ENOBUFS;
1849 }
1850
1851 return genlmsg_reply(msg, info);
1852 }
1853
1854 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1855 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1856 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1857 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1858 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1859 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1860 };
1861
1862 static int parse_txq_params(struct nlattr *tb[],
1863 struct ieee80211_txq_params *txq_params)
1864 {
1865 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1866 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1867 !tb[NL80211_TXQ_ATTR_AIFS])
1868 return -EINVAL;
1869
1870 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1871 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1872 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1873 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1874 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1875
1876 if (txq_params->ac >= NL80211_NUM_ACS)
1877 return -EINVAL;
1878
1879 return 0;
1880 }
1881
1882 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1883 {
1884 /*
1885 * You can only set the channel explicitly for WDS interfaces,
1886 * all others have their channel managed via their respective
1887 * "establish a connection" command (connect, join, ...)
1888 *
1889 * For AP/GO and mesh mode, the channel can be set with the
1890 * channel userspace API, but is only stored and passed to the
1891 * low-level driver when the AP starts or the mesh is joined.
1892 * This is for backward compatibility, userspace can also give
1893 * the channel in the start-ap or join-mesh commands instead.
1894 *
1895 * Monitors are special as they are normally slaved to
1896 * whatever else is going on, so they have their own special
1897 * operation to set the monitor channel if possible.
1898 */
1899 return !wdev ||
1900 wdev->iftype == NL80211_IFTYPE_AP ||
1901 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1902 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1903 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1904 }
1905
1906 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1907 struct genl_info *info,
1908 struct cfg80211_chan_def *chandef)
1909 {
1910 u32 control_freq;
1911
1912 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1913 return -EINVAL;
1914
1915 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1916
1917 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1918 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1919 chandef->center_freq1 = control_freq;
1920 chandef->center_freq2 = 0;
1921
1922 /* Primary channel not allowed */
1923 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1924 return -EINVAL;
1925
1926 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1927 enum nl80211_channel_type chantype;
1928
1929 chantype = nla_get_u32(
1930 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1931
1932 switch (chantype) {
1933 case NL80211_CHAN_NO_HT:
1934 case NL80211_CHAN_HT20:
1935 case NL80211_CHAN_HT40PLUS:
1936 case NL80211_CHAN_HT40MINUS:
1937 cfg80211_chandef_create(chandef, chandef->chan,
1938 chantype);
1939 break;
1940 default:
1941 return -EINVAL;
1942 }
1943 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1944 chandef->width =
1945 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1946 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1947 chandef->center_freq1 =
1948 nla_get_u32(
1949 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1950 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1951 chandef->center_freq2 =
1952 nla_get_u32(
1953 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1954 }
1955
1956 if (!cfg80211_chandef_valid(chandef))
1957 return -EINVAL;
1958
1959 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1960 IEEE80211_CHAN_DISABLED))
1961 return -EINVAL;
1962
1963 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1964 chandef->width == NL80211_CHAN_WIDTH_10) &&
1965 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1966 return -EINVAL;
1967
1968 return 0;
1969 }
1970
1971 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1972 struct net_device *dev,
1973 struct genl_info *info)
1974 {
1975 struct cfg80211_chan_def chandef;
1976 int result;
1977 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1978 struct wireless_dev *wdev = NULL;
1979
1980 if (dev)
1981 wdev = dev->ieee80211_ptr;
1982 if (!nl80211_can_set_dev_channel(wdev))
1983 return -EOPNOTSUPP;
1984 if (wdev)
1985 iftype = wdev->iftype;
1986
1987 result = nl80211_parse_chandef(rdev, info, &chandef);
1988 if (result)
1989 return result;
1990
1991 switch (iftype) {
1992 case NL80211_IFTYPE_AP:
1993 case NL80211_IFTYPE_P2P_GO:
1994 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1995 result = -EINVAL;
1996 break;
1997 }
1998 if (wdev->beacon_interval) {
1999 if (!dev || !rdev->ops->set_ap_chanwidth ||
2000 !(rdev->wiphy.features &
2001 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2002 result = -EBUSY;
2003 break;
2004 }
2005
2006 /* Only allow dynamic channel width changes */
2007 if (chandef.chan != wdev->preset_chandef.chan) {
2008 result = -EBUSY;
2009 break;
2010 }
2011 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2012 if (result)
2013 break;
2014 }
2015 wdev->preset_chandef = chandef;
2016 result = 0;
2017 break;
2018 case NL80211_IFTYPE_MESH_POINT:
2019 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2020 break;
2021 case NL80211_IFTYPE_MONITOR:
2022 result = cfg80211_set_monitor_channel(rdev, &chandef);
2023 break;
2024 default:
2025 result = -EINVAL;
2026 }
2027
2028 return result;
2029 }
2030
2031 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2032 {
2033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2034 struct net_device *netdev = info->user_ptr[1];
2035
2036 return __nl80211_set_channel(rdev, netdev, info);
2037 }
2038
2039 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2040 {
2041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2042 struct net_device *dev = info->user_ptr[1];
2043 struct wireless_dev *wdev = dev->ieee80211_ptr;
2044 const u8 *bssid;
2045
2046 if (!info->attrs[NL80211_ATTR_MAC])
2047 return -EINVAL;
2048
2049 if (netif_running(dev))
2050 return -EBUSY;
2051
2052 if (!rdev->ops->set_wds_peer)
2053 return -EOPNOTSUPP;
2054
2055 if (wdev->iftype != NL80211_IFTYPE_WDS)
2056 return -EOPNOTSUPP;
2057
2058 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2059 return rdev_set_wds_peer(rdev, dev, bssid);
2060 }
2061
2062
2063 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2064 {
2065 struct cfg80211_registered_device *rdev;
2066 struct net_device *netdev = NULL;
2067 struct wireless_dev *wdev;
2068 int result = 0, rem_txq_params = 0;
2069 struct nlattr *nl_txq_params;
2070 u32 changed;
2071 u8 retry_short = 0, retry_long = 0;
2072 u32 frag_threshold = 0, rts_threshold = 0;
2073 u8 coverage_class = 0;
2074
2075 ASSERT_RTNL();
2076
2077 /*
2078 * Try to find the wiphy and netdev. Normally this
2079 * function shouldn't need the netdev, but this is
2080 * done for backward compatibility -- previously
2081 * setting the channel was done per wiphy, but now
2082 * it is per netdev. Previous userland like hostapd
2083 * also passed a netdev to set_wiphy, so that it is
2084 * possible to let that go to the right netdev!
2085 */
2086
2087 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2088 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2089
2090 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2091 if (netdev && netdev->ieee80211_ptr)
2092 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2093 else
2094 netdev = NULL;
2095 }
2096
2097 if (!netdev) {
2098 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2099 info->attrs);
2100 if (IS_ERR(rdev))
2101 return PTR_ERR(rdev);
2102 wdev = NULL;
2103 netdev = NULL;
2104 result = 0;
2105 } else
2106 wdev = netdev->ieee80211_ptr;
2107
2108 /*
2109 * end workaround code, by now the rdev is available
2110 * and locked, and wdev may or may not be NULL.
2111 */
2112
2113 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2114 result = cfg80211_dev_rename(
2115 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2116
2117 if (result)
2118 return result;
2119
2120 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2121 struct ieee80211_txq_params txq_params;
2122 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2123
2124 if (!rdev->ops->set_txq_params)
2125 return -EOPNOTSUPP;
2126
2127 if (!netdev)
2128 return -EINVAL;
2129
2130 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2131 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2132 return -EINVAL;
2133
2134 if (!netif_running(netdev))
2135 return -ENETDOWN;
2136
2137 nla_for_each_nested(nl_txq_params,
2138 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2139 rem_txq_params) {
2140 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2141 nla_data(nl_txq_params),
2142 nla_len(nl_txq_params),
2143 txq_params_policy);
2144 if (result)
2145 return result;
2146 result = parse_txq_params(tb, &txq_params);
2147 if (result)
2148 return result;
2149
2150 result = rdev_set_txq_params(rdev, netdev,
2151 &txq_params);
2152 if (result)
2153 return result;
2154 }
2155 }
2156
2157 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2158 result = __nl80211_set_channel(
2159 rdev,
2160 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2161 info);
2162 if (result)
2163 return result;
2164 }
2165
2166 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2167 struct wireless_dev *txp_wdev = wdev;
2168 enum nl80211_tx_power_setting type;
2169 int idx, mbm = 0;
2170
2171 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2172 txp_wdev = NULL;
2173
2174 if (!rdev->ops->set_tx_power)
2175 return -EOPNOTSUPP;
2176
2177 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2178 type = nla_get_u32(info->attrs[idx]);
2179
2180 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2181 (type != NL80211_TX_POWER_AUTOMATIC))
2182 return -EINVAL;
2183
2184 if (type != NL80211_TX_POWER_AUTOMATIC) {
2185 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2186 mbm = nla_get_u32(info->attrs[idx]);
2187 }
2188
2189 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2190 if (result)
2191 return result;
2192 }
2193
2194 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2195 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2196 u32 tx_ant, rx_ant;
2197 if ((!rdev->wiphy.available_antennas_tx &&
2198 !rdev->wiphy.available_antennas_rx) ||
2199 !rdev->ops->set_antenna)
2200 return -EOPNOTSUPP;
2201
2202 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2203 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2204
2205 /* reject antenna configurations which don't match the
2206 * available antenna masks, except for the "all" mask */
2207 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2208 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2209 return -EINVAL;
2210
2211 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2212 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2213
2214 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2215 if (result)
2216 return result;
2217 }
2218
2219 changed = 0;
2220
2221 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2222 retry_short = nla_get_u8(
2223 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2224 if (retry_short == 0)
2225 return -EINVAL;
2226
2227 changed |= WIPHY_PARAM_RETRY_SHORT;
2228 }
2229
2230 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2231 retry_long = nla_get_u8(
2232 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2233 if (retry_long == 0)
2234 return -EINVAL;
2235
2236 changed |= WIPHY_PARAM_RETRY_LONG;
2237 }
2238
2239 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2240 frag_threshold = nla_get_u32(
2241 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2242 if (frag_threshold < 256)
2243 return -EINVAL;
2244
2245 if (frag_threshold != (u32) -1) {
2246 /*
2247 * Fragments (apart from the last one) are required to
2248 * have even length. Make the fragmentation code
2249 * simpler by stripping LSB should someone try to use
2250 * odd threshold value.
2251 */
2252 frag_threshold &= ~0x1;
2253 }
2254 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2255 }
2256
2257 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2258 rts_threshold = nla_get_u32(
2259 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2260 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2261 }
2262
2263 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2264 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2265 return -EINVAL;
2266
2267 coverage_class = nla_get_u8(
2268 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2269 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2270 }
2271
2272 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2273 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2274 return -EOPNOTSUPP;
2275
2276 changed |= WIPHY_PARAM_DYN_ACK;
2277 }
2278
2279 if (changed) {
2280 u8 old_retry_short, old_retry_long;
2281 u32 old_frag_threshold, old_rts_threshold;
2282 u8 old_coverage_class;
2283
2284 if (!rdev->ops->set_wiphy_params)
2285 return -EOPNOTSUPP;
2286
2287 old_retry_short = rdev->wiphy.retry_short;
2288 old_retry_long = rdev->wiphy.retry_long;
2289 old_frag_threshold = rdev->wiphy.frag_threshold;
2290 old_rts_threshold = rdev->wiphy.rts_threshold;
2291 old_coverage_class = rdev->wiphy.coverage_class;
2292
2293 if (changed & WIPHY_PARAM_RETRY_SHORT)
2294 rdev->wiphy.retry_short = retry_short;
2295 if (changed & WIPHY_PARAM_RETRY_LONG)
2296 rdev->wiphy.retry_long = retry_long;
2297 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2298 rdev->wiphy.frag_threshold = frag_threshold;
2299 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2300 rdev->wiphy.rts_threshold = rts_threshold;
2301 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2302 rdev->wiphy.coverage_class = coverage_class;
2303
2304 result = rdev_set_wiphy_params(rdev, changed);
2305 if (result) {
2306 rdev->wiphy.retry_short = old_retry_short;
2307 rdev->wiphy.retry_long = old_retry_long;
2308 rdev->wiphy.frag_threshold = old_frag_threshold;
2309 rdev->wiphy.rts_threshold = old_rts_threshold;
2310 rdev->wiphy.coverage_class = old_coverage_class;
2311 }
2312 }
2313 return 0;
2314 }
2315
2316 static inline u64 wdev_id(struct wireless_dev *wdev)
2317 {
2318 return (u64)wdev->identifier |
2319 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2320 }
2321
2322 static int nl80211_send_chandef(struct sk_buff *msg,
2323 const struct cfg80211_chan_def *chandef)
2324 {
2325 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2326 return -EINVAL;
2327
2328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2329 chandef->chan->center_freq))
2330 return -ENOBUFS;
2331 switch (chandef->width) {
2332 case NL80211_CHAN_WIDTH_20_NOHT:
2333 case NL80211_CHAN_WIDTH_20:
2334 case NL80211_CHAN_WIDTH_40:
2335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2336 cfg80211_get_chandef_type(chandef)))
2337 return -ENOBUFS;
2338 break;
2339 default:
2340 break;
2341 }
2342 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2343 return -ENOBUFS;
2344 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2345 return -ENOBUFS;
2346 if (chandef->center_freq2 &&
2347 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2348 return -ENOBUFS;
2349 return 0;
2350 }
2351
2352 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2353 struct cfg80211_registered_device *rdev,
2354 struct wireless_dev *wdev, bool removal)
2355 {
2356 struct net_device *dev = wdev->netdev;
2357 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2358 void *hdr;
2359
2360 if (removal)
2361 cmd = NL80211_CMD_DEL_INTERFACE;
2362
2363 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2364 if (!hdr)
2365 return -1;
2366
2367 if (dev &&
2368 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2369 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2370 goto nla_put_failure;
2371
2372 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2373 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2374 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2375 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2376 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2377 rdev->devlist_generation ^
2378 (cfg80211_rdev_list_generation << 2)))
2379 goto nla_put_failure;
2380
2381 if (rdev->ops->get_channel) {
2382 int ret;
2383 struct cfg80211_chan_def chandef;
2384
2385 ret = rdev_get_channel(rdev, wdev, &chandef);
2386 if (ret == 0) {
2387 if (nl80211_send_chandef(msg, &chandef))
2388 goto nla_put_failure;
2389 }
2390 }
2391
2392 if (wdev->ssid_len) {
2393 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2394 goto nla_put_failure;
2395 }
2396
2397 return genlmsg_end(msg, hdr);
2398
2399 nla_put_failure:
2400 genlmsg_cancel(msg, hdr);
2401 return -EMSGSIZE;
2402 }
2403
2404 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2405 {
2406 int wp_idx = 0;
2407 int if_idx = 0;
2408 int wp_start = cb->args[0];
2409 int if_start = cb->args[1];
2410 struct cfg80211_registered_device *rdev;
2411 struct wireless_dev *wdev;
2412
2413 rtnl_lock();
2414 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2415 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2416 continue;
2417 if (wp_idx < wp_start) {
2418 wp_idx++;
2419 continue;
2420 }
2421 if_idx = 0;
2422
2423 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2424 if (if_idx < if_start) {
2425 if_idx++;
2426 continue;
2427 }
2428 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2429 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2430 rdev, wdev, false) < 0) {
2431 goto out;
2432 }
2433 if_idx++;
2434 }
2435
2436 wp_idx++;
2437 }
2438 out:
2439 rtnl_unlock();
2440
2441 cb->args[0] = wp_idx;
2442 cb->args[1] = if_idx;
2443
2444 return skb->len;
2445 }
2446
2447 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2448 {
2449 struct sk_buff *msg;
2450 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2451 struct wireless_dev *wdev = info->user_ptr[1];
2452
2453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2454 if (!msg)
2455 return -ENOMEM;
2456
2457 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2458 rdev, wdev, false) < 0) {
2459 nlmsg_free(msg);
2460 return -ENOBUFS;
2461 }
2462
2463 return genlmsg_reply(msg, info);
2464 }
2465
2466 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2467 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2468 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2469 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2470 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2471 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2472 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2473 };
2474
2475 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2476 {
2477 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2478 int flag;
2479
2480 *mntrflags = 0;
2481
2482 if (!nla)
2483 return -EINVAL;
2484
2485 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2486 nla, mntr_flags_policy))
2487 return -EINVAL;
2488
2489 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2490 if (flags[flag])
2491 *mntrflags |= (1<<flag);
2492
2493 return 0;
2494 }
2495
2496 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2497 struct net_device *netdev, u8 use_4addr,
2498 enum nl80211_iftype iftype)
2499 {
2500 if (!use_4addr) {
2501 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2502 return -EBUSY;
2503 return 0;
2504 }
2505
2506 switch (iftype) {
2507 case NL80211_IFTYPE_AP_VLAN:
2508 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2509 return 0;
2510 break;
2511 case NL80211_IFTYPE_STATION:
2512 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2513 return 0;
2514 break;
2515 default:
2516 break;
2517 }
2518
2519 return -EOPNOTSUPP;
2520 }
2521
2522 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2523 {
2524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2525 struct vif_params params;
2526 int err;
2527 enum nl80211_iftype otype, ntype;
2528 struct net_device *dev = info->user_ptr[1];
2529 u32 _flags, *flags = NULL;
2530 bool change = false;
2531
2532 memset(&params, 0, sizeof(params));
2533
2534 otype = ntype = dev->ieee80211_ptr->iftype;
2535
2536 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2537 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2538 if (otype != ntype)
2539 change = true;
2540 if (ntype > NL80211_IFTYPE_MAX)
2541 return -EINVAL;
2542 }
2543
2544 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2545 struct wireless_dev *wdev = dev->ieee80211_ptr;
2546
2547 if (ntype != NL80211_IFTYPE_MESH_POINT)
2548 return -EINVAL;
2549 if (netif_running(dev))
2550 return -EBUSY;
2551
2552 wdev_lock(wdev);
2553 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2554 IEEE80211_MAX_MESH_ID_LEN);
2555 wdev->mesh_id_up_len =
2556 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2557 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2558 wdev->mesh_id_up_len);
2559 wdev_unlock(wdev);
2560 }
2561
2562 if (info->attrs[NL80211_ATTR_4ADDR]) {
2563 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2564 change = true;
2565 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2566 if (err)
2567 return err;
2568 } else {
2569 params.use_4addr = -1;
2570 }
2571
2572 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2573 if (ntype != NL80211_IFTYPE_MONITOR)
2574 return -EINVAL;
2575 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2576 &_flags);
2577 if (err)
2578 return err;
2579
2580 flags = &_flags;
2581 change = true;
2582 }
2583
2584 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2585 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2586 return -EOPNOTSUPP;
2587
2588 if (change)
2589 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2590 else
2591 err = 0;
2592
2593 if (!err && params.use_4addr != -1)
2594 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2595
2596 return err;
2597 }
2598
2599 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2600 {
2601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2602 struct vif_params params;
2603 struct wireless_dev *wdev;
2604 struct sk_buff *msg, *event;
2605 int err;
2606 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2607 u32 flags;
2608
2609 /* to avoid failing a new interface creation due to pending removal */
2610 cfg80211_destroy_ifaces(rdev);
2611
2612 memset(&params, 0, sizeof(params));
2613
2614 if (!info->attrs[NL80211_ATTR_IFNAME])
2615 return -EINVAL;
2616
2617 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2618 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2619 if (type > NL80211_IFTYPE_MAX)
2620 return -EINVAL;
2621 }
2622
2623 if (!rdev->ops->add_virtual_intf ||
2624 !(rdev->wiphy.interface_modes & (1 << type)))
2625 return -EOPNOTSUPP;
2626
2627 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2628 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2629 info->attrs[NL80211_ATTR_MAC]) {
2630 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2631 ETH_ALEN);
2632 if (!is_valid_ether_addr(params.macaddr))
2633 return -EADDRNOTAVAIL;
2634 }
2635
2636 if (info->attrs[NL80211_ATTR_4ADDR]) {
2637 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2638 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2639 if (err)
2640 return err;
2641 }
2642
2643 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2644 if (!msg)
2645 return -ENOMEM;
2646
2647 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2648 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2649 &flags);
2650
2651 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2652 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2653 return -EOPNOTSUPP;
2654
2655 wdev = rdev_add_virtual_intf(rdev,
2656 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2657 type, err ? NULL : &flags, &params);
2658 if (WARN_ON(!wdev)) {
2659 nlmsg_free(msg);
2660 return -EPROTO;
2661 } else if (IS_ERR(wdev)) {
2662 nlmsg_free(msg);
2663 return PTR_ERR(wdev);
2664 }
2665
2666 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2667 wdev->owner_nlportid = info->snd_portid;
2668
2669 switch (type) {
2670 case NL80211_IFTYPE_MESH_POINT:
2671 if (!info->attrs[NL80211_ATTR_MESH_ID])
2672 break;
2673 wdev_lock(wdev);
2674 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2675 IEEE80211_MAX_MESH_ID_LEN);
2676 wdev->mesh_id_up_len =
2677 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2678 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2679 wdev->mesh_id_up_len);
2680 wdev_unlock(wdev);
2681 break;
2682 case NL80211_IFTYPE_P2P_DEVICE:
2683 /*
2684 * P2P Device doesn't have a netdev, so doesn't go
2685 * through the netdev notifier and must be added here
2686 */
2687 mutex_init(&wdev->mtx);
2688 INIT_LIST_HEAD(&wdev->event_list);
2689 spin_lock_init(&wdev->event_lock);
2690 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2691 spin_lock_init(&wdev->mgmt_registrations_lock);
2692
2693 wdev->identifier = ++rdev->wdev_id;
2694 list_add_rcu(&wdev->list, &rdev->wdev_list);
2695 rdev->devlist_generation++;
2696 break;
2697 default:
2698 break;
2699 }
2700
2701 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2702 rdev, wdev, false) < 0) {
2703 nlmsg_free(msg);
2704 return -ENOBUFS;
2705 }
2706
2707 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2708 if (event) {
2709 if (nl80211_send_iface(event, 0, 0, 0,
2710 rdev, wdev, false) < 0) {
2711 nlmsg_free(event);
2712 goto out;
2713 }
2714
2715 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2716 event, 0, NL80211_MCGRP_CONFIG,
2717 GFP_KERNEL);
2718 }
2719
2720 out:
2721 return genlmsg_reply(msg, info);
2722 }
2723
2724 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2725 {
2726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727 struct wireless_dev *wdev = info->user_ptr[1];
2728 struct sk_buff *msg;
2729 int status;
2730
2731 if (!rdev->ops->del_virtual_intf)
2732 return -EOPNOTSUPP;
2733
2734 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2735 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2736 nlmsg_free(msg);
2737 msg = NULL;
2738 }
2739
2740 /*
2741 * If we remove a wireless device without a netdev then clear
2742 * user_ptr[1] so that nl80211_post_doit won't dereference it
2743 * to check if it needs to do dev_put(). Otherwise it crashes
2744 * since the wdev has been freed, unlike with a netdev where
2745 * we need the dev_put() for the netdev to really be freed.
2746 */
2747 if (!wdev->netdev)
2748 info->user_ptr[1] = NULL;
2749
2750 status = rdev_del_virtual_intf(rdev, wdev);
2751 if (status >= 0 && msg)
2752 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2753 msg, 0, NL80211_MCGRP_CONFIG,
2754 GFP_KERNEL);
2755 else
2756 nlmsg_free(msg);
2757
2758 return status;
2759 }
2760
2761 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2762 {
2763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2764 struct net_device *dev = info->user_ptr[1];
2765 u16 noack_map;
2766
2767 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2768 return -EINVAL;
2769
2770 if (!rdev->ops->set_noack_map)
2771 return -EOPNOTSUPP;
2772
2773 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2774
2775 return rdev_set_noack_map(rdev, dev, noack_map);
2776 }
2777
2778 struct get_key_cookie {
2779 struct sk_buff *msg;
2780 int error;
2781 int idx;
2782 };
2783
2784 static void get_key_callback(void *c, struct key_params *params)
2785 {
2786 struct nlattr *key;
2787 struct get_key_cookie *cookie = c;
2788
2789 if ((params->key &&
2790 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2791 params->key_len, params->key)) ||
2792 (params->seq &&
2793 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2794 params->seq_len, params->seq)) ||
2795 (params->cipher &&
2796 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2797 params->cipher)))
2798 goto nla_put_failure;
2799
2800 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2801 if (!key)
2802 goto nla_put_failure;
2803
2804 if ((params->key &&
2805 nla_put(cookie->msg, NL80211_KEY_DATA,
2806 params->key_len, params->key)) ||
2807 (params->seq &&
2808 nla_put(cookie->msg, NL80211_KEY_SEQ,
2809 params->seq_len, params->seq)) ||
2810 (params->cipher &&
2811 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2812 params->cipher)))
2813 goto nla_put_failure;
2814
2815 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2816 goto nla_put_failure;
2817
2818 nla_nest_end(cookie->msg, key);
2819
2820 return;
2821 nla_put_failure:
2822 cookie->error = 1;
2823 }
2824
2825 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2826 {
2827 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2828 int err;
2829 struct net_device *dev = info->user_ptr[1];
2830 u8 key_idx = 0;
2831 const u8 *mac_addr = NULL;
2832 bool pairwise;
2833 struct get_key_cookie cookie = {
2834 .error = 0,
2835 };
2836 void *hdr;
2837 struct sk_buff *msg;
2838
2839 if (info->attrs[NL80211_ATTR_KEY_IDX])
2840 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2841
2842 if (key_idx > 5)
2843 return -EINVAL;
2844
2845 if (info->attrs[NL80211_ATTR_MAC])
2846 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2847
2848 pairwise = !!mac_addr;
2849 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2850 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2851 if (kt >= NUM_NL80211_KEYTYPES)
2852 return -EINVAL;
2853 if (kt != NL80211_KEYTYPE_GROUP &&
2854 kt != NL80211_KEYTYPE_PAIRWISE)
2855 return -EINVAL;
2856 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2857 }
2858
2859 if (!rdev->ops->get_key)
2860 return -EOPNOTSUPP;
2861
2862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2863 if (!msg)
2864 return -ENOMEM;
2865
2866 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2867 NL80211_CMD_NEW_KEY);
2868 if (!hdr)
2869 goto nla_put_failure;
2870
2871 cookie.msg = msg;
2872 cookie.idx = key_idx;
2873
2874 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2875 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2876 goto nla_put_failure;
2877 if (mac_addr &&
2878 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2879 goto nla_put_failure;
2880
2881 if (pairwise && mac_addr &&
2882 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2883 return -ENOENT;
2884
2885 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2886 get_key_callback);
2887
2888 if (err)
2889 goto free_msg;
2890
2891 if (cookie.error)
2892 goto nla_put_failure;
2893
2894 genlmsg_end(msg, hdr);
2895 return genlmsg_reply(msg, info);
2896
2897 nla_put_failure:
2898 err = -ENOBUFS;
2899 free_msg:
2900 nlmsg_free(msg);
2901 return err;
2902 }
2903
2904 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2905 {
2906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2907 struct key_parse key;
2908 int err;
2909 struct net_device *dev = info->user_ptr[1];
2910
2911 err = nl80211_parse_key(info, &key);
2912 if (err)
2913 return err;
2914
2915 if (key.idx < 0)
2916 return -EINVAL;
2917
2918 /* only support setting default key */
2919 if (!key.def && !key.defmgmt)
2920 return -EINVAL;
2921
2922 wdev_lock(dev->ieee80211_ptr);
2923
2924 if (key.def) {
2925 if (!rdev->ops->set_default_key) {
2926 err = -EOPNOTSUPP;
2927 goto out;
2928 }
2929
2930 err = nl80211_key_allowed(dev->ieee80211_ptr);
2931 if (err)
2932 goto out;
2933
2934 err = rdev_set_default_key(rdev, dev, key.idx,
2935 key.def_uni, key.def_multi);
2936
2937 if (err)
2938 goto out;
2939
2940 #ifdef CONFIG_CFG80211_WEXT
2941 dev->ieee80211_ptr->wext.default_key = key.idx;
2942 #endif
2943 } else {
2944 if (key.def_uni || !key.def_multi) {
2945 err = -EINVAL;
2946 goto out;
2947 }
2948
2949 if (!rdev->ops->set_default_mgmt_key) {
2950 err = -EOPNOTSUPP;
2951 goto out;
2952 }
2953
2954 err = nl80211_key_allowed(dev->ieee80211_ptr);
2955 if (err)
2956 goto out;
2957
2958 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2959 if (err)
2960 goto out;
2961
2962 #ifdef CONFIG_CFG80211_WEXT
2963 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2964 #endif
2965 }
2966
2967 out:
2968 wdev_unlock(dev->ieee80211_ptr);
2969
2970 return err;
2971 }
2972
2973 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2974 {
2975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2976 int err;
2977 struct net_device *dev = info->user_ptr[1];
2978 struct key_parse key;
2979 const u8 *mac_addr = NULL;
2980
2981 err = nl80211_parse_key(info, &key);
2982 if (err)
2983 return err;
2984
2985 if (!key.p.key)
2986 return -EINVAL;
2987
2988 if (info->attrs[NL80211_ATTR_MAC])
2989 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2990
2991 if (key.type == -1) {
2992 if (mac_addr)
2993 key.type = NL80211_KEYTYPE_PAIRWISE;
2994 else
2995 key.type = NL80211_KEYTYPE_GROUP;
2996 }
2997
2998 /* for now */
2999 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3000 key.type != NL80211_KEYTYPE_GROUP)
3001 return -EINVAL;
3002
3003 if (!rdev->ops->add_key)
3004 return -EOPNOTSUPP;
3005
3006 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3007 key.type == NL80211_KEYTYPE_PAIRWISE,
3008 mac_addr))
3009 return -EINVAL;
3010
3011 wdev_lock(dev->ieee80211_ptr);
3012 err = nl80211_key_allowed(dev->ieee80211_ptr);
3013 if (!err)
3014 err = rdev_add_key(rdev, dev, key.idx,
3015 key.type == NL80211_KEYTYPE_PAIRWISE,
3016 mac_addr, &key.p);
3017 wdev_unlock(dev->ieee80211_ptr);
3018
3019 return err;
3020 }
3021
3022 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3023 {
3024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3025 int err;
3026 struct net_device *dev = info->user_ptr[1];
3027 u8 *mac_addr = NULL;
3028 struct key_parse key;
3029
3030 err = nl80211_parse_key(info, &key);
3031 if (err)
3032 return err;
3033
3034 if (info->attrs[NL80211_ATTR_MAC])
3035 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3036
3037 if (key.type == -1) {
3038 if (mac_addr)
3039 key.type = NL80211_KEYTYPE_PAIRWISE;
3040 else
3041 key.type = NL80211_KEYTYPE_GROUP;
3042 }
3043
3044 /* for now */
3045 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3046 key.type != NL80211_KEYTYPE_GROUP)
3047 return -EINVAL;
3048
3049 if (!rdev->ops->del_key)
3050 return -EOPNOTSUPP;
3051
3052 wdev_lock(dev->ieee80211_ptr);
3053 err = nl80211_key_allowed(dev->ieee80211_ptr);
3054
3055 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3056 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3057 err = -ENOENT;
3058
3059 if (!err)
3060 err = rdev_del_key(rdev, dev, key.idx,
3061 key.type == NL80211_KEYTYPE_PAIRWISE,
3062 mac_addr);
3063
3064 #ifdef CONFIG_CFG80211_WEXT
3065 if (!err) {
3066 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3067 dev->ieee80211_ptr->wext.default_key = -1;
3068 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3069 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3070 }
3071 #endif
3072 wdev_unlock(dev->ieee80211_ptr);
3073
3074 return err;
3075 }
3076
3077 /* This function returns an error or the number of nested attributes */
3078 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3079 {
3080 struct nlattr *attr;
3081 int n_entries = 0, tmp;
3082
3083 nla_for_each_nested(attr, nl_attr, tmp) {
3084 if (nla_len(attr) != ETH_ALEN)
3085 return -EINVAL;
3086
3087 n_entries++;
3088 }
3089
3090 return n_entries;
3091 }
3092
3093 /*
3094 * This function parses ACL information and allocates memory for ACL data.
3095 * On successful return, the calling function is responsible to free the
3096 * ACL buffer returned by this function.
3097 */
3098 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3099 struct genl_info *info)
3100 {
3101 enum nl80211_acl_policy acl_policy;
3102 struct nlattr *attr;
3103 struct cfg80211_acl_data *acl;
3104 int i = 0, n_entries, tmp;
3105
3106 if (!wiphy->max_acl_mac_addrs)
3107 return ERR_PTR(-EOPNOTSUPP);
3108
3109 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3110 return ERR_PTR(-EINVAL);
3111
3112 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3113 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3114 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3115 return ERR_PTR(-EINVAL);
3116
3117 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3118 return ERR_PTR(-EINVAL);
3119
3120 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3121 if (n_entries < 0)
3122 return ERR_PTR(n_entries);
3123
3124 if (n_entries > wiphy->max_acl_mac_addrs)
3125 return ERR_PTR(-ENOTSUPP);
3126
3127 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3128 GFP_KERNEL);
3129 if (!acl)
3130 return ERR_PTR(-ENOMEM);
3131
3132 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3133 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3134 i++;
3135 }
3136
3137 acl->n_acl_entries = n_entries;
3138 acl->acl_policy = acl_policy;
3139
3140 return acl;
3141 }
3142
3143 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3144 {
3145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3146 struct net_device *dev = info->user_ptr[1];
3147 struct cfg80211_acl_data *acl;
3148 int err;
3149
3150 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3152 return -EOPNOTSUPP;
3153
3154 if (!dev->ieee80211_ptr->beacon_interval)
3155 return -EINVAL;
3156
3157 acl = parse_acl_data(&rdev->wiphy, info);
3158 if (IS_ERR(acl))
3159 return PTR_ERR(acl);
3160
3161 err = rdev_set_mac_acl(rdev, dev, acl);
3162
3163 kfree(acl);
3164
3165 return err;
3166 }
3167
3168 static int nl80211_parse_beacon(struct nlattr *attrs[],
3169 struct cfg80211_beacon_data *bcn)
3170 {
3171 bool haveinfo = false;
3172
3173 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3174 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3175 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3176 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3177 return -EINVAL;
3178
3179 memset(bcn, 0, sizeof(*bcn));
3180
3181 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3182 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3183 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3184 if (!bcn->head_len)
3185 return -EINVAL;
3186 haveinfo = true;
3187 }
3188
3189 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3190 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3191 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3192 haveinfo = true;
3193 }
3194
3195 if (!haveinfo)
3196 return -EINVAL;
3197
3198 if (attrs[NL80211_ATTR_IE]) {
3199 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3200 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3201 }
3202
3203 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3204 bcn->proberesp_ies =
3205 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3206 bcn->proberesp_ies_len =
3207 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3208 }
3209
3210 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3211 bcn->assocresp_ies =
3212 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3213 bcn->assocresp_ies_len =
3214 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3215 }
3216
3217 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3218 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3219 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3220 }
3221
3222 return 0;
3223 }
3224
3225 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3226 struct cfg80211_ap_settings *params)
3227 {
3228 struct wireless_dev *wdev;
3229 bool ret = false;
3230
3231 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3232 if (wdev->iftype != NL80211_IFTYPE_AP &&
3233 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3234 continue;
3235
3236 if (!wdev->preset_chandef.chan)
3237 continue;
3238
3239 params->chandef = wdev->preset_chandef;
3240 ret = true;
3241 break;
3242 }
3243
3244 return ret;
3245 }
3246
3247 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3248 enum nl80211_auth_type auth_type,
3249 enum nl80211_commands cmd)
3250 {
3251 if (auth_type > NL80211_AUTHTYPE_MAX)
3252 return false;
3253
3254 switch (cmd) {
3255 case NL80211_CMD_AUTHENTICATE:
3256 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3257 auth_type == NL80211_AUTHTYPE_SAE)
3258 return false;
3259 return true;
3260 case NL80211_CMD_CONNECT:
3261 case NL80211_CMD_START_AP:
3262 /* SAE not supported yet */
3263 if (auth_type == NL80211_AUTHTYPE_SAE)
3264 return false;
3265 return true;
3266 default:
3267 return false;
3268 }
3269 }
3270
3271 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3272 {
3273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3274 struct net_device *dev = info->user_ptr[1];
3275 struct wireless_dev *wdev = dev->ieee80211_ptr;
3276 struct cfg80211_ap_settings params;
3277 int err;
3278
3279 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3280 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3281 return -EOPNOTSUPP;
3282
3283 if (!rdev->ops->start_ap)
3284 return -EOPNOTSUPP;
3285
3286 if (wdev->beacon_interval)
3287 return -EALREADY;
3288
3289 memset(&params, 0, sizeof(params));
3290
3291 /* these are required for START_AP */
3292 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3293 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3294 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3295 return -EINVAL;
3296
3297 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3298 if (err)
3299 return err;
3300
3301 params.beacon_interval =
3302 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3303 params.dtim_period =
3304 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3305
3306 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3307 if (err)
3308 return err;
3309
3310 /*
3311 * In theory, some of these attributes should be required here
3312 * but since they were not used when the command was originally
3313 * added, keep them optional for old user space programs to let
3314 * them continue to work with drivers that do not need the
3315 * additional information -- drivers must check!
3316 */
3317 if (info->attrs[NL80211_ATTR_SSID]) {
3318 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3319 params.ssid_len =
3320 nla_len(info->attrs[NL80211_ATTR_SSID]);
3321 if (params.ssid_len == 0 ||
3322 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3323 return -EINVAL;
3324 }
3325
3326 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3327 params.hidden_ssid = nla_get_u32(
3328 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3329 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3330 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3331 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3332 return -EINVAL;
3333 }
3334
3335 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3336
3337 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3338 params.auth_type = nla_get_u32(
3339 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3340 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3341 NL80211_CMD_START_AP))
3342 return -EINVAL;
3343 } else
3344 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3345
3346 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3347 NL80211_MAX_NR_CIPHER_SUITES);
3348 if (err)
3349 return err;
3350
3351 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3352 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3353 return -EOPNOTSUPP;
3354 params.inactivity_timeout = nla_get_u16(
3355 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3356 }
3357
3358 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3360 return -EINVAL;
3361 params.p2p_ctwindow =
3362 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3363 if (params.p2p_ctwindow > 127)
3364 return -EINVAL;
3365 if (params.p2p_ctwindow != 0 &&
3366 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3367 return -EINVAL;
3368 }
3369
3370 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3371 u8 tmp;
3372
3373 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3374 return -EINVAL;
3375 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3376 if (tmp > 1)
3377 return -EINVAL;
3378 params.p2p_opp_ps = tmp;
3379 if (params.p2p_opp_ps != 0 &&
3380 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3381 return -EINVAL;
3382 }
3383
3384 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3385 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3386 if (err)
3387 return err;
3388 } else if (wdev->preset_chandef.chan) {
3389 params.chandef = wdev->preset_chandef;
3390 } else if (!nl80211_get_ap_channel(rdev, &params))
3391 return -EINVAL;
3392
3393 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3394 wdev->iftype))
3395 return -EINVAL;
3396
3397 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3398 params.acl = parse_acl_data(&rdev->wiphy, info);
3399 if (IS_ERR(params.acl))
3400 return PTR_ERR(params.acl);
3401 }
3402
3403 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3404 params.smps_mode =
3405 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3406 switch (params.smps_mode) {
3407 case NL80211_SMPS_OFF:
3408 break;
3409 case NL80211_SMPS_STATIC:
3410 if (!(rdev->wiphy.features &
3411 NL80211_FEATURE_STATIC_SMPS))
3412 return -EINVAL;
3413 break;
3414 case NL80211_SMPS_DYNAMIC:
3415 if (!(rdev->wiphy.features &
3416 NL80211_FEATURE_DYNAMIC_SMPS))
3417 return -EINVAL;
3418 break;
3419 default:
3420 return -EINVAL;
3421 }
3422 } else {
3423 params.smps_mode = NL80211_SMPS_OFF;
3424 }
3425
3426 wdev_lock(wdev);
3427 err = rdev_start_ap(rdev, dev, &params);
3428 if (!err) {
3429 wdev->preset_chandef = params.chandef;
3430 wdev->beacon_interval = params.beacon_interval;
3431 wdev->chandef = params.chandef;
3432 wdev->ssid_len = params.ssid_len;
3433 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3434 }
3435 wdev_unlock(wdev);
3436
3437 kfree(params.acl);
3438
3439 return err;
3440 }
3441
3442 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3443 {
3444 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3445 struct net_device *dev = info->user_ptr[1];
3446 struct wireless_dev *wdev = dev->ieee80211_ptr;
3447 struct cfg80211_beacon_data params;
3448 int err;
3449
3450 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3451 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3452 return -EOPNOTSUPP;
3453
3454 if (!rdev->ops->change_beacon)
3455 return -EOPNOTSUPP;
3456
3457 if (!wdev->beacon_interval)
3458 return -EINVAL;
3459
3460 err = nl80211_parse_beacon(info->attrs, &params);
3461 if (err)
3462 return err;
3463
3464 wdev_lock(wdev);
3465 err = rdev_change_beacon(rdev, dev, &params);
3466 wdev_unlock(wdev);
3467
3468 return err;
3469 }
3470
3471 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3472 {
3473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3474 struct net_device *dev = info->user_ptr[1];
3475
3476 return cfg80211_stop_ap(rdev, dev, false);
3477 }
3478
3479 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3480 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3481 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3482 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3483 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3484 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3485 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3486 };
3487
3488 static int parse_station_flags(struct genl_info *info,
3489 enum nl80211_iftype iftype,
3490 struct station_parameters *params)
3491 {
3492 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3493 struct nlattr *nla;
3494 int flag;
3495
3496 /*
3497 * Try parsing the new attribute first so userspace
3498 * can specify both for older kernels.
3499 */
3500 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3501 if (nla) {
3502 struct nl80211_sta_flag_update *sta_flags;
3503
3504 sta_flags = nla_data(nla);
3505 params->sta_flags_mask = sta_flags->mask;
3506 params->sta_flags_set = sta_flags->set;
3507 params->sta_flags_set &= params->sta_flags_mask;
3508 if ((params->sta_flags_mask |
3509 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3510 return -EINVAL;
3511 return 0;
3512 }
3513
3514 /* if present, parse the old attribute */
3515
3516 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3517 if (!nla)
3518 return 0;
3519
3520 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3521 nla, sta_flags_policy))
3522 return -EINVAL;
3523
3524 /*
3525 * Only allow certain flags for interface types so that
3526 * other attributes are silently ignored. Remember that
3527 * this is backward compatibility code with old userspace
3528 * and shouldn't be hit in other cases anyway.
3529 */
3530 switch (iftype) {
3531 case NL80211_IFTYPE_AP:
3532 case NL80211_IFTYPE_AP_VLAN:
3533 case NL80211_IFTYPE_P2P_GO:
3534 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3535 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3536 BIT(NL80211_STA_FLAG_WME) |
3537 BIT(NL80211_STA_FLAG_MFP);
3538 break;
3539 case NL80211_IFTYPE_P2P_CLIENT:
3540 case NL80211_IFTYPE_STATION:
3541 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3542 BIT(NL80211_STA_FLAG_TDLS_PEER);
3543 break;
3544 case NL80211_IFTYPE_MESH_POINT:
3545 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3546 BIT(NL80211_STA_FLAG_MFP) |
3547 BIT(NL80211_STA_FLAG_AUTHORIZED);
3548 default:
3549 return -EINVAL;
3550 }
3551
3552 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3553 if (flags[flag]) {
3554 params->sta_flags_set |= (1<<flag);
3555
3556 /* no longer support new API additions in old API */
3557 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3558 return -EINVAL;
3559 }
3560 }
3561
3562 return 0;
3563 }
3564
3565 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3566 int attr)
3567 {
3568 struct nlattr *rate;
3569 u32 bitrate;
3570 u16 bitrate_compat;
3571
3572 rate = nla_nest_start(msg, attr);
3573 if (!rate)
3574 return false;
3575
3576 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3577 bitrate = cfg80211_calculate_bitrate(info);
3578 /* report 16-bit bitrate only if we can */
3579 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3580 if (bitrate > 0 &&
3581 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3582 return false;
3583 if (bitrate_compat > 0 &&
3584 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3585 return false;
3586
3587 if (info->flags & RATE_INFO_FLAGS_MCS) {
3588 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3589 return false;
3590 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3591 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3592 return false;
3593 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3594 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3595 return false;
3596 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3597 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3598 return false;
3599 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3600 return false;
3601 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3602 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3603 return false;
3604 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3605 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3606 return false;
3607 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3608 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3609 return false;
3610 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3611 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3612 return false;
3613 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3614 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3615 return false;
3616 }
3617
3618 nla_nest_end(msg, rate);
3619 return true;
3620 }
3621
3622 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3623 int id)
3624 {
3625 void *attr;
3626 int i = 0;
3627
3628 if (!mask)
3629 return true;
3630
3631 attr = nla_nest_start(msg, id);
3632 if (!attr)
3633 return false;
3634
3635 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3636 if (!(mask & BIT(i)))
3637 continue;
3638
3639 if (nla_put_u8(msg, i, signal[i]))
3640 return false;
3641 }
3642
3643 nla_nest_end(msg, attr);
3644
3645 return true;
3646 }
3647
3648 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3649 int flags,
3650 struct cfg80211_registered_device *rdev,
3651 struct net_device *dev,
3652 const u8 *mac_addr, struct station_info *sinfo)
3653 {
3654 void *hdr;
3655 struct nlattr *sinfoattr, *bss_param;
3656
3657 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3658 if (!hdr)
3659 return -1;
3660
3661 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3662 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3663 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3664 goto nla_put_failure;
3665
3666 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3667 if (!sinfoattr)
3668 goto nla_put_failure;
3669 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3670 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3671 sinfo->connected_time))
3672 goto nla_put_failure;
3673 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3674 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3675 sinfo->inactive_time))
3676 goto nla_put_failure;
3677 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3678 STATION_INFO_RX_BYTES64)) &&
3679 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3680 (u32)sinfo->rx_bytes))
3681 goto nla_put_failure;
3682 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3683 STATION_INFO_TX_BYTES64)) &&
3684 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3685 (u32)sinfo->tx_bytes))
3686 goto nla_put_failure;
3687 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3688 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3689 sinfo->rx_bytes))
3690 goto nla_put_failure;
3691 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3692 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3693 sinfo->tx_bytes))
3694 goto nla_put_failure;
3695 if ((sinfo->filled & STATION_INFO_LLID) &&
3696 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3697 goto nla_put_failure;
3698 if ((sinfo->filled & STATION_INFO_PLID) &&
3699 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3700 goto nla_put_failure;
3701 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3702 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3703 sinfo->plink_state))
3704 goto nla_put_failure;
3705 switch (rdev->wiphy.signal_type) {
3706 case CFG80211_SIGNAL_TYPE_MBM:
3707 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3708 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3709 sinfo->signal))
3710 goto nla_put_failure;
3711 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3712 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3713 sinfo->signal_avg))
3714 goto nla_put_failure;
3715 break;
3716 default:
3717 break;
3718 }
3719 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3720 if (!nl80211_put_signal(msg, sinfo->chains,
3721 sinfo->chain_signal,
3722 NL80211_STA_INFO_CHAIN_SIGNAL))
3723 goto nla_put_failure;
3724 }
3725 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3726 if (!nl80211_put_signal(msg, sinfo->chains,
3727 sinfo->chain_signal_avg,
3728 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3729 goto nla_put_failure;
3730 }
3731 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3732 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3733 NL80211_STA_INFO_TX_BITRATE))
3734 goto nla_put_failure;
3735 }
3736 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3737 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3738 NL80211_STA_INFO_RX_BITRATE))
3739 goto nla_put_failure;
3740 }
3741 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3742 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3743 sinfo->rx_packets))
3744 goto nla_put_failure;
3745 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3746 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3747 sinfo->tx_packets))
3748 goto nla_put_failure;
3749 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3750 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3751 sinfo->tx_retries))
3752 goto nla_put_failure;
3753 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3754 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3755 sinfo->tx_failed))
3756 goto nla_put_failure;
3757 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3758 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3759 sinfo->expected_throughput))
3760 goto nla_put_failure;
3761 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3762 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3763 sinfo->beacon_loss_count))
3764 goto nla_put_failure;
3765 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3766 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3767 sinfo->local_pm))
3768 goto nla_put_failure;
3769 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3770 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3771 sinfo->peer_pm))
3772 goto nla_put_failure;
3773 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3774 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3775 sinfo->nonpeer_pm))
3776 goto nla_put_failure;
3777 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3778 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3779 if (!bss_param)
3780 goto nla_put_failure;
3781
3782 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3783 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3784 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3785 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3786 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3787 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3788 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3789 sinfo->bss_param.dtim_period) ||
3790 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3791 sinfo->bss_param.beacon_interval))
3792 goto nla_put_failure;
3793
3794 nla_nest_end(msg, bss_param);
3795 }
3796 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3797 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3798 sizeof(struct nl80211_sta_flag_update),
3799 &sinfo->sta_flags))
3800 goto nla_put_failure;
3801 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3802 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3803 sinfo->t_offset))
3804 goto nla_put_failure;
3805 nla_nest_end(msg, sinfoattr);
3806
3807 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3808 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3809 sinfo->assoc_req_ies))
3810 goto nla_put_failure;
3811
3812 return genlmsg_end(msg, hdr);
3813
3814 nla_put_failure:
3815 genlmsg_cancel(msg, hdr);
3816 return -EMSGSIZE;
3817 }
3818
3819 static int nl80211_dump_station(struct sk_buff *skb,
3820 struct netlink_callback *cb)
3821 {
3822 struct station_info sinfo;
3823 struct cfg80211_registered_device *rdev;
3824 struct wireless_dev *wdev;
3825 u8 mac_addr[ETH_ALEN];
3826 int sta_idx = cb->args[2];
3827 int err;
3828
3829 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3830 if (err)
3831 return err;
3832
3833 if (!wdev->netdev) {
3834 err = -EINVAL;
3835 goto out_err;
3836 }
3837
3838 if (!rdev->ops->dump_station) {
3839 err = -EOPNOTSUPP;
3840 goto out_err;
3841 }
3842
3843 while (1) {
3844 memset(&sinfo, 0, sizeof(sinfo));
3845 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3846 mac_addr, &sinfo);
3847 if (err == -ENOENT)
3848 break;
3849 if (err)
3850 goto out_err;
3851
3852 if (nl80211_send_station(skb,
3853 NETLINK_CB(cb->skb).portid,
3854 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3855 rdev, wdev->netdev, mac_addr,
3856 &sinfo) < 0)
3857 goto out;
3858
3859 sta_idx++;
3860 }
3861
3862
3863 out:
3864 cb->args[2] = sta_idx;
3865 err = skb->len;
3866 out_err:
3867 nl80211_finish_wdev_dump(rdev);
3868
3869 return err;
3870 }
3871
3872 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3873 {
3874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3875 struct net_device *dev = info->user_ptr[1];
3876 struct station_info sinfo;
3877 struct sk_buff *msg;
3878 u8 *mac_addr = NULL;
3879 int err;
3880
3881 memset(&sinfo, 0, sizeof(sinfo));
3882
3883 if (!info->attrs[NL80211_ATTR_MAC])
3884 return -EINVAL;
3885
3886 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3887
3888 if (!rdev->ops->get_station)
3889 return -EOPNOTSUPP;
3890
3891 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3892 if (err)
3893 return err;
3894
3895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3896 if (!msg)
3897 return -ENOMEM;
3898
3899 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3900 rdev, dev, mac_addr, &sinfo) < 0) {
3901 nlmsg_free(msg);
3902 return -ENOBUFS;
3903 }
3904
3905 return genlmsg_reply(msg, info);
3906 }
3907
3908 int cfg80211_check_station_change(struct wiphy *wiphy,
3909 struct station_parameters *params,
3910 enum cfg80211_station_type statype)
3911 {
3912 if (params->listen_interval != -1)
3913 return -EINVAL;
3914 if (params->aid &&
3915 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3916 return -EINVAL;
3917
3918 /* When you run into this, adjust the code below for the new flag */
3919 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3920
3921 switch (statype) {
3922 case CFG80211_STA_MESH_PEER_KERNEL:
3923 case CFG80211_STA_MESH_PEER_USER:
3924 /*
3925 * No ignoring the TDLS flag here -- the userspace mesh
3926 * code doesn't have the bug of including TDLS in the
3927 * mask everywhere.
3928 */
3929 if (params->sta_flags_mask &
3930 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3931 BIT(NL80211_STA_FLAG_MFP) |
3932 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3933 return -EINVAL;
3934 break;
3935 case CFG80211_STA_TDLS_PEER_SETUP:
3936 case CFG80211_STA_TDLS_PEER_ACTIVE:
3937 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3938 return -EINVAL;
3939 /* ignore since it can't change */
3940 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3941 break;
3942 default:
3943 /* disallow mesh-specific things */
3944 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3945 return -EINVAL;
3946 if (params->local_pm)
3947 return -EINVAL;
3948 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3949 return -EINVAL;
3950 }
3951
3952 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3953 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3954 /* TDLS can't be set, ... */
3955 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3956 return -EINVAL;
3957 /*
3958 * ... but don't bother the driver with it. This works around
3959 * a hostapd/wpa_supplicant issue -- it always includes the
3960 * TLDS_PEER flag in the mask even for AP mode.
3961 */
3962 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3963 }
3964
3965 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3966 /* reject other things that can't change */
3967 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3968 return -EINVAL;
3969 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3970 return -EINVAL;
3971 if (params->supported_rates)
3972 return -EINVAL;
3973 if (params->ext_capab || params->ht_capa || params->vht_capa)
3974 return -EINVAL;
3975 }
3976
3977 if (statype != CFG80211_STA_AP_CLIENT) {
3978 if (params->vlan)
3979 return -EINVAL;
3980 }
3981
3982 switch (statype) {
3983 case CFG80211_STA_AP_MLME_CLIENT:
3984 /* Use this only for authorizing/unauthorizing a station */
3985 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3986 return -EOPNOTSUPP;
3987 break;
3988 case CFG80211_STA_AP_CLIENT:
3989 /* accept only the listed bits */
3990 if (params->sta_flags_mask &
3991 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3992 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3993 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3994 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3995 BIT(NL80211_STA_FLAG_WME) |
3996 BIT(NL80211_STA_FLAG_MFP)))
3997 return -EINVAL;
3998
3999 /* but authenticated/associated only if driver handles it */
4000 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4001 params->sta_flags_mask &
4002 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4003 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4004 return -EINVAL;
4005 break;
4006 case CFG80211_STA_IBSS:
4007 case CFG80211_STA_AP_STA:
4008 /* reject any changes other than AUTHORIZED */
4009 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4010 return -EINVAL;
4011 break;
4012 case CFG80211_STA_TDLS_PEER_SETUP:
4013 /* reject any changes other than AUTHORIZED or WME */
4014 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4015 BIT(NL80211_STA_FLAG_WME)))
4016 return -EINVAL;
4017 /* force (at least) rates when authorizing */
4018 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4019 !params->supported_rates)
4020 return -EINVAL;
4021 break;
4022 case CFG80211_STA_TDLS_PEER_ACTIVE:
4023 /* reject any changes */
4024 return -EINVAL;
4025 case CFG80211_STA_MESH_PEER_KERNEL:
4026 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4027 return -EINVAL;
4028 break;
4029 case CFG80211_STA_MESH_PEER_USER:
4030 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4031 return -EINVAL;
4032 break;
4033 }
4034
4035 return 0;
4036 }
4037 EXPORT_SYMBOL(cfg80211_check_station_change);
4038
4039 /*
4040 * Get vlan interface making sure it is running and on the right wiphy.
4041 */
4042 static struct net_device *get_vlan(struct genl_info *info,
4043 struct cfg80211_registered_device *rdev)
4044 {
4045 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4046 struct net_device *v;
4047 int ret;
4048
4049 if (!vlanattr)
4050 return NULL;
4051
4052 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4053 if (!v)
4054 return ERR_PTR(-ENODEV);
4055
4056 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4057 ret = -EINVAL;
4058 goto error;
4059 }
4060
4061 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4062 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4063 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4064 ret = -EINVAL;
4065 goto error;
4066 }
4067
4068 if (!netif_running(v)) {
4069 ret = -ENETDOWN;
4070 goto error;
4071 }
4072
4073 return v;
4074 error:
4075 dev_put(v);
4076 return ERR_PTR(ret);
4077 }
4078
4079 static const struct nla_policy
4080 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4081 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4082 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4083 };
4084
4085 static int nl80211_parse_sta_wme(struct genl_info *info,
4086 struct station_parameters *params)
4087 {
4088 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4089 struct nlattr *nla;
4090 int err;
4091
4092 /* parse WME attributes if present */
4093 if (!info->attrs[NL80211_ATTR_STA_WME])
4094 return 0;
4095
4096 nla = info->attrs[NL80211_ATTR_STA_WME];
4097 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4098 nl80211_sta_wme_policy);
4099 if (err)
4100 return err;
4101
4102 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4103 params->uapsd_queues = nla_get_u8(
4104 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4105 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4106 return -EINVAL;
4107
4108 if (tb[NL80211_STA_WME_MAX_SP])
4109 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4110
4111 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4112 return -EINVAL;
4113
4114 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4115
4116 return 0;
4117 }
4118
4119 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4120 struct station_parameters *params)
4121 {
4122 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4123 params->supported_channels =
4124 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4125 params->supported_channels_len =
4126 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4127 /*
4128 * Need to include at least one (first channel, number of
4129 * channels) tuple for each subband, and must have proper
4130 * tuples for the rest of the data as well.
4131 */
4132 if (params->supported_channels_len < 2)
4133 return -EINVAL;
4134 if (params->supported_channels_len % 2)
4135 return -EINVAL;
4136 }
4137
4138 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4139 params->supported_oper_classes =
4140 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4141 params->supported_oper_classes_len =
4142 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4143 /*
4144 * The value of the Length field of the Supported Operating
4145 * Classes element is between 2 and 253.
4146 */
4147 if (params->supported_oper_classes_len < 2 ||
4148 params->supported_oper_classes_len > 253)
4149 return -EINVAL;
4150 }
4151 return 0;
4152 }
4153
4154 static int nl80211_set_station_tdls(struct genl_info *info,
4155 struct station_parameters *params)
4156 {
4157 int err;
4158 /* Dummy STA entry gets updated once the peer capabilities are known */
4159 if (info->attrs[NL80211_ATTR_PEER_AID])
4160 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4161 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4162 params->ht_capa =
4163 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4164 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4165 params->vht_capa =
4166 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4167
4168 err = nl80211_parse_sta_channel_info(info, params);
4169 if (err)
4170 return err;
4171
4172 return nl80211_parse_sta_wme(info, params);
4173 }
4174
4175 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4176 {
4177 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4178 struct net_device *dev = info->user_ptr[1];
4179 struct station_parameters params;
4180 u8 *mac_addr;
4181 int err;
4182
4183 memset(&params, 0, sizeof(params));
4184
4185 params.listen_interval = -1;
4186
4187 if (!rdev->ops->change_station)
4188 return -EOPNOTSUPP;
4189
4190 if (info->attrs[NL80211_ATTR_STA_AID])
4191 return -EINVAL;
4192
4193 if (!info->attrs[NL80211_ATTR_MAC])
4194 return -EINVAL;
4195
4196 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4197
4198 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4199 params.supported_rates =
4200 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4201 params.supported_rates_len =
4202 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4203 }
4204
4205 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4206 params.capability =
4207 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4208 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4209 }
4210
4211 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4212 params.ext_capab =
4213 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4214 params.ext_capab_len =
4215 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4216 }
4217
4218 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4219 return -EINVAL;
4220
4221 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4222 return -EINVAL;
4223
4224 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4225 params.plink_action =
4226 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4227 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4228 return -EINVAL;
4229 }
4230
4231 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4232 params.plink_state =
4233 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4234 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4235 return -EINVAL;
4236 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4237 }
4238
4239 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4240 enum nl80211_mesh_power_mode pm = nla_get_u32(
4241 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4242
4243 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4244 pm > NL80211_MESH_POWER_MAX)
4245 return -EINVAL;
4246
4247 params.local_pm = pm;
4248 }
4249
4250 /* Include parameters for TDLS peer (will check later) */
4251 err = nl80211_set_station_tdls(info, &params);
4252 if (err)
4253 return err;
4254
4255 params.vlan = get_vlan(info, rdev);
4256 if (IS_ERR(params.vlan))
4257 return PTR_ERR(params.vlan);
4258
4259 switch (dev->ieee80211_ptr->iftype) {
4260 case NL80211_IFTYPE_AP:
4261 case NL80211_IFTYPE_AP_VLAN:
4262 case NL80211_IFTYPE_P2P_GO:
4263 case NL80211_IFTYPE_P2P_CLIENT:
4264 case NL80211_IFTYPE_STATION:
4265 case NL80211_IFTYPE_ADHOC:
4266 case NL80211_IFTYPE_MESH_POINT:
4267 break;
4268 default:
4269 err = -EOPNOTSUPP;
4270 goto out_put_vlan;
4271 }
4272
4273 /* driver will call cfg80211_check_station_change() */
4274 err = rdev_change_station(rdev, dev, mac_addr, &params);
4275
4276 out_put_vlan:
4277 if (params.vlan)
4278 dev_put(params.vlan);
4279
4280 return err;
4281 }
4282
4283 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4284 {
4285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4286 int err;
4287 struct net_device *dev = info->user_ptr[1];
4288 struct station_parameters params;
4289 u8 *mac_addr = NULL;
4290
4291 memset(&params, 0, sizeof(params));
4292
4293 if (!rdev->ops->add_station)
4294 return -EOPNOTSUPP;
4295
4296 if (!info->attrs[NL80211_ATTR_MAC])
4297 return -EINVAL;
4298
4299 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4300 return -EINVAL;
4301
4302 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4303 return -EINVAL;
4304
4305 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4306 !info->attrs[NL80211_ATTR_PEER_AID])
4307 return -EINVAL;
4308
4309 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4310 params.supported_rates =
4311 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4312 params.supported_rates_len =
4313 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4314 params.listen_interval =
4315 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4316
4317 if (info->attrs[NL80211_ATTR_PEER_AID])
4318 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4319 else
4320 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4321 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4322 return -EINVAL;
4323
4324 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4325 params.capability =
4326 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4327 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4328 }
4329
4330 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4331 params.ext_capab =
4332 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4333 params.ext_capab_len =
4334 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4335 }
4336
4337 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4338 params.ht_capa =
4339 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4340
4341 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4342 params.vht_capa =
4343 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4344
4345 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4346 params.opmode_notif_used = true;
4347 params.opmode_notif =
4348 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4349 }
4350
4351 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4352 params.plink_action =
4353 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4354 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4355 return -EINVAL;
4356 }
4357
4358 err = nl80211_parse_sta_channel_info(info, &params);
4359 if (err)
4360 return err;
4361
4362 err = nl80211_parse_sta_wme(info, &params);
4363 if (err)
4364 return err;
4365
4366 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4367 return -EINVAL;
4368
4369 /* When you run into this, adjust the code below for the new flag */
4370 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4371
4372 switch (dev->ieee80211_ptr->iftype) {
4373 case NL80211_IFTYPE_AP:
4374 case NL80211_IFTYPE_AP_VLAN:
4375 case NL80211_IFTYPE_P2P_GO:
4376 /* ignore WME attributes if iface/sta is not capable */
4377 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4378 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4379 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4380
4381 /* TDLS peers cannot be added */
4382 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4383 info->attrs[NL80211_ATTR_PEER_AID])
4384 return -EINVAL;
4385 /* but don't bother the driver with it */
4386 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4387
4388 /* allow authenticated/associated only if driver handles it */
4389 if (!(rdev->wiphy.features &
4390 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4391 params.sta_flags_mask &
4392 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4393 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4394 return -EINVAL;
4395
4396 /* must be last in here for error handling */
4397 params.vlan = get_vlan(info, rdev);
4398 if (IS_ERR(params.vlan))
4399 return PTR_ERR(params.vlan);
4400 break;
4401 case NL80211_IFTYPE_MESH_POINT:
4402 /* ignore uAPSD data */
4403 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4404
4405 /* associated is disallowed */
4406 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4407 return -EINVAL;
4408 /* TDLS peers cannot be added */
4409 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4410 info->attrs[NL80211_ATTR_PEER_AID])
4411 return -EINVAL;
4412 break;
4413 case NL80211_IFTYPE_STATION:
4414 case NL80211_IFTYPE_P2P_CLIENT:
4415 /* ignore uAPSD data */
4416 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4417
4418 /* these are disallowed */
4419 if (params.sta_flags_mask &
4420 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4421 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4422 return -EINVAL;
4423 /* Only TDLS peers can be added */
4424 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4425 return -EINVAL;
4426 /* Can only add if TDLS ... */
4427 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4428 return -EOPNOTSUPP;
4429 /* ... with external setup is supported */
4430 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4431 return -EOPNOTSUPP;
4432 /*
4433 * Older wpa_supplicant versions always mark the TDLS peer
4434 * as authorized, but it shouldn't yet be.
4435 */
4436 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4437 break;
4438 default:
4439 return -EOPNOTSUPP;
4440 }
4441
4442 /* be aware of params.vlan when changing code here */
4443
4444 err = rdev_add_station(rdev, dev, mac_addr, &params);
4445
4446 if (params.vlan)
4447 dev_put(params.vlan);
4448 return err;
4449 }
4450
4451 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4452 {
4453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4454 struct net_device *dev = info->user_ptr[1];
4455 struct station_del_parameters params;
4456
4457 memset(&params, 0, sizeof(params));
4458
4459 if (info->attrs[NL80211_ATTR_MAC])
4460 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4461
4462 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4463 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4465 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4466 return -EINVAL;
4467
4468 if (!rdev->ops->del_station)
4469 return -EOPNOTSUPP;
4470
4471 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4472 params.subtype =
4473 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4474 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4475 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4476 return -EINVAL;
4477 } else {
4478 /* Default to Deauthentication frame */
4479 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4480 }
4481
4482 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4483 params.reason_code =
4484 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4485 if (params.reason_code == 0)
4486 return -EINVAL; /* 0 is reserved */
4487 } else {
4488 /* Default to reason code 2 */
4489 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4490 }
4491
4492 return rdev_del_station(rdev, dev, &params);
4493 }
4494
4495 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4496 int flags, struct net_device *dev,
4497 u8 *dst, u8 *next_hop,
4498 struct mpath_info *pinfo)
4499 {
4500 void *hdr;
4501 struct nlattr *pinfoattr;
4502
4503 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4504 if (!hdr)
4505 return -1;
4506
4507 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4508 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4509 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4510 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4511 goto nla_put_failure;
4512
4513 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4514 if (!pinfoattr)
4515 goto nla_put_failure;
4516 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4517 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4518 pinfo->frame_qlen))
4519 goto nla_put_failure;
4520 if (((pinfo->filled & MPATH_INFO_SN) &&
4521 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4522 ((pinfo->filled & MPATH_INFO_METRIC) &&
4523 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4524 pinfo->metric)) ||
4525 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4526 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4527 pinfo->exptime)) ||
4528 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4529 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4530 pinfo->flags)) ||
4531 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4532 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4533 pinfo->discovery_timeout)) ||
4534 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4535 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4536 pinfo->discovery_retries)))
4537 goto nla_put_failure;
4538
4539 nla_nest_end(msg, pinfoattr);
4540
4541 return genlmsg_end(msg, hdr);
4542
4543 nla_put_failure:
4544 genlmsg_cancel(msg, hdr);
4545 return -EMSGSIZE;
4546 }
4547
4548 static int nl80211_dump_mpath(struct sk_buff *skb,
4549 struct netlink_callback *cb)
4550 {
4551 struct mpath_info pinfo;
4552 struct cfg80211_registered_device *rdev;
4553 struct wireless_dev *wdev;
4554 u8 dst[ETH_ALEN];
4555 u8 next_hop[ETH_ALEN];
4556 int path_idx = cb->args[2];
4557 int err;
4558
4559 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4560 if (err)
4561 return err;
4562
4563 if (!rdev->ops->dump_mpath) {
4564 err = -EOPNOTSUPP;
4565 goto out_err;
4566 }
4567
4568 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4569 err = -EOPNOTSUPP;
4570 goto out_err;
4571 }
4572
4573 while (1) {
4574 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4575 next_hop, &pinfo);
4576 if (err == -ENOENT)
4577 break;
4578 if (err)
4579 goto out_err;
4580
4581 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4582 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4583 wdev->netdev, dst, next_hop,
4584 &pinfo) < 0)
4585 goto out;
4586
4587 path_idx++;
4588 }
4589
4590
4591 out:
4592 cb->args[2] = path_idx;
4593 err = skb->len;
4594 out_err:
4595 nl80211_finish_wdev_dump(rdev);
4596 return err;
4597 }
4598
4599 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4600 {
4601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4602 int err;
4603 struct net_device *dev = info->user_ptr[1];
4604 struct mpath_info pinfo;
4605 struct sk_buff *msg;
4606 u8 *dst = NULL;
4607 u8 next_hop[ETH_ALEN];
4608
4609 memset(&pinfo, 0, sizeof(pinfo));
4610
4611 if (!info->attrs[NL80211_ATTR_MAC])
4612 return -EINVAL;
4613
4614 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4615
4616 if (!rdev->ops->get_mpath)
4617 return -EOPNOTSUPP;
4618
4619 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4620 return -EOPNOTSUPP;
4621
4622 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4623 if (err)
4624 return err;
4625
4626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4627 if (!msg)
4628 return -ENOMEM;
4629
4630 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4631 dev, dst, next_hop, &pinfo) < 0) {
4632 nlmsg_free(msg);
4633 return -ENOBUFS;
4634 }
4635
4636 return genlmsg_reply(msg, info);
4637 }
4638
4639 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4640 {
4641 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4642 struct net_device *dev = info->user_ptr[1];
4643 u8 *dst = NULL;
4644 u8 *next_hop = NULL;
4645
4646 if (!info->attrs[NL80211_ATTR_MAC])
4647 return -EINVAL;
4648
4649 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4650 return -EINVAL;
4651
4652 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4653 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4654
4655 if (!rdev->ops->change_mpath)
4656 return -EOPNOTSUPP;
4657
4658 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4659 return -EOPNOTSUPP;
4660
4661 return rdev_change_mpath(rdev, dev, dst, next_hop);
4662 }
4663
4664 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4665 {
4666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4667 struct net_device *dev = info->user_ptr[1];
4668 u8 *dst = NULL;
4669 u8 *next_hop = NULL;
4670
4671 if (!info->attrs[NL80211_ATTR_MAC])
4672 return -EINVAL;
4673
4674 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4675 return -EINVAL;
4676
4677 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4678 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4679
4680 if (!rdev->ops->add_mpath)
4681 return -EOPNOTSUPP;
4682
4683 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4684 return -EOPNOTSUPP;
4685
4686 return rdev_add_mpath(rdev, dev, dst, next_hop);
4687 }
4688
4689 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4690 {
4691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4692 struct net_device *dev = info->user_ptr[1];
4693 u8 *dst = NULL;
4694
4695 if (info->attrs[NL80211_ATTR_MAC])
4696 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4697
4698 if (!rdev->ops->del_mpath)
4699 return -EOPNOTSUPP;
4700
4701 return rdev_del_mpath(rdev, dev, dst);
4702 }
4703
4704 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4705 {
4706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4707 int err;
4708 struct net_device *dev = info->user_ptr[1];
4709 struct mpath_info pinfo;
4710 struct sk_buff *msg;
4711 u8 *dst = NULL;
4712 u8 mpp[ETH_ALEN];
4713
4714 memset(&pinfo, 0, sizeof(pinfo));
4715
4716 if (!info->attrs[NL80211_ATTR_MAC])
4717 return -EINVAL;
4718
4719 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4720
4721 if (!rdev->ops->get_mpp)
4722 return -EOPNOTSUPP;
4723
4724 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4725 return -EOPNOTSUPP;
4726
4727 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4728 if (err)
4729 return err;
4730
4731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4732 if (!msg)
4733 return -ENOMEM;
4734
4735 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4736 dev, dst, mpp, &pinfo) < 0) {
4737 nlmsg_free(msg);
4738 return -ENOBUFS;
4739 }
4740
4741 return genlmsg_reply(msg, info);
4742 }
4743
4744 static int nl80211_dump_mpp(struct sk_buff *skb,
4745 struct netlink_callback *cb)
4746 {
4747 struct mpath_info pinfo;
4748 struct cfg80211_registered_device *rdev;
4749 struct wireless_dev *wdev;
4750 u8 dst[ETH_ALEN];
4751 u8 mpp[ETH_ALEN];
4752 int path_idx = cb->args[2];
4753 int err;
4754
4755 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4756 if (err)
4757 return err;
4758
4759 if (!rdev->ops->dump_mpp) {
4760 err = -EOPNOTSUPP;
4761 goto out_err;
4762 }
4763
4764 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4765 err = -EOPNOTSUPP;
4766 goto out_err;
4767 }
4768
4769 while (1) {
4770 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4771 mpp, &pinfo);
4772 if (err == -ENOENT)
4773 break;
4774 if (err)
4775 goto out_err;
4776
4777 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4778 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4779 wdev->netdev, dst, mpp,
4780 &pinfo) < 0)
4781 goto out;
4782
4783 path_idx++;
4784 }
4785
4786 out:
4787 cb->args[2] = path_idx;
4788 err = skb->len;
4789 out_err:
4790 nl80211_finish_wdev_dump(rdev);
4791 return err;
4792 }
4793
4794 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4795 {
4796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4797 struct net_device *dev = info->user_ptr[1];
4798 struct wireless_dev *wdev = dev->ieee80211_ptr;
4799 struct bss_parameters params;
4800 int err;
4801
4802 memset(&params, 0, sizeof(params));
4803 /* default to not changing parameters */
4804 params.use_cts_prot = -1;
4805 params.use_short_preamble = -1;
4806 params.use_short_slot_time = -1;
4807 params.ap_isolate = -1;
4808 params.ht_opmode = -1;
4809 params.p2p_ctwindow = -1;
4810 params.p2p_opp_ps = -1;
4811
4812 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4813 params.use_cts_prot =
4814 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4815 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4816 params.use_short_preamble =
4817 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4818 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4819 params.use_short_slot_time =
4820 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4821 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4822 params.basic_rates =
4823 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4824 params.basic_rates_len =
4825 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4826 }
4827 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4828 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4829 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4830 params.ht_opmode =
4831 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4832
4833 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4834 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4835 return -EINVAL;
4836 params.p2p_ctwindow =
4837 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4838 if (params.p2p_ctwindow < 0)
4839 return -EINVAL;
4840 if (params.p2p_ctwindow != 0 &&
4841 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4842 return -EINVAL;
4843 }
4844
4845 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4846 u8 tmp;
4847
4848 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4849 return -EINVAL;
4850 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4851 if (tmp > 1)
4852 return -EINVAL;
4853 params.p2p_opp_ps = tmp;
4854 if (params.p2p_opp_ps &&
4855 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4856 return -EINVAL;
4857 }
4858
4859 if (!rdev->ops->change_bss)
4860 return -EOPNOTSUPP;
4861
4862 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4863 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4864 return -EOPNOTSUPP;
4865
4866 wdev_lock(wdev);
4867 err = rdev_change_bss(rdev, dev, &params);
4868 wdev_unlock(wdev);
4869
4870 return err;
4871 }
4872
4873 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4874 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4875 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4876 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4877 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4878 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4879 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4880 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4881 };
4882
4883 static int parse_reg_rule(struct nlattr *tb[],
4884 struct ieee80211_reg_rule *reg_rule)
4885 {
4886 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4887 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4888
4889 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4890 return -EINVAL;
4891 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4892 return -EINVAL;
4893 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4894 return -EINVAL;
4895 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4896 return -EINVAL;
4897 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4898 return -EINVAL;
4899
4900 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4901
4902 freq_range->start_freq_khz =
4903 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4904 freq_range->end_freq_khz =
4905 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4906 freq_range->max_bandwidth_khz =
4907 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4908
4909 power_rule->max_eirp =
4910 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4911
4912 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4913 power_rule->max_antenna_gain =
4914 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4915
4916 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4917 reg_rule->dfs_cac_ms =
4918 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4919
4920 return 0;
4921 }
4922
4923 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4924 {
4925 char *data = NULL;
4926 enum nl80211_user_reg_hint_type user_reg_hint_type;
4927
4928 /*
4929 * You should only get this when cfg80211 hasn't yet initialized
4930 * completely when built-in to the kernel right between the time
4931 * window between nl80211_init() and regulatory_init(), if that is
4932 * even possible.
4933 */
4934 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4935 return -EINPROGRESS;
4936
4937 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4938 user_reg_hint_type =
4939 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4940 else
4941 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4942
4943 switch (user_reg_hint_type) {
4944 case NL80211_USER_REG_HINT_USER:
4945 case NL80211_USER_REG_HINT_CELL_BASE:
4946 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4947 return -EINVAL;
4948
4949 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4950 return regulatory_hint_user(data, user_reg_hint_type);
4951 case NL80211_USER_REG_HINT_INDOOR:
4952 return regulatory_hint_indoor_user();
4953 default:
4954 return -EINVAL;
4955 }
4956 }
4957
4958 static int nl80211_get_mesh_config(struct sk_buff *skb,
4959 struct genl_info *info)
4960 {
4961 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4962 struct net_device *dev = info->user_ptr[1];
4963 struct wireless_dev *wdev = dev->ieee80211_ptr;
4964 struct mesh_config cur_params;
4965 int err = 0;
4966 void *hdr;
4967 struct nlattr *pinfoattr;
4968 struct sk_buff *msg;
4969
4970 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4971 return -EOPNOTSUPP;
4972
4973 if (!rdev->ops->get_mesh_config)
4974 return -EOPNOTSUPP;
4975
4976 wdev_lock(wdev);
4977 /* If not connected, get default parameters */
4978 if (!wdev->mesh_id_len)
4979 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4980 else
4981 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4982 wdev_unlock(wdev);
4983
4984 if (err)
4985 return err;
4986
4987 /* Draw up a netlink message to send back */
4988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4989 if (!msg)
4990 return -ENOMEM;
4991 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4992 NL80211_CMD_GET_MESH_CONFIG);
4993 if (!hdr)
4994 goto out;
4995 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4996 if (!pinfoattr)
4997 goto nla_put_failure;
4998 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4999 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5000 cur_params.dot11MeshRetryTimeout) ||
5001 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5002 cur_params.dot11MeshConfirmTimeout) ||
5003 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5004 cur_params.dot11MeshHoldingTimeout) ||
5005 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5006 cur_params.dot11MeshMaxPeerLinks) ||
5007 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5008 cur_params.dot11MeshMaxRetries) ||
5009 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5010 cur_params.dot11MeshTTL) ||
5011 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5012 cur_params.element_ttl) ||
5013 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5014 cur_params.auto_open_plinks) ||
5015 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5016 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5017 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5018 cur_params.dot11MeshHWMPmaxPREQretries) ||
5019 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5020 cur_params.path_refresh_time) ||
5021 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5022 cur_params.min_discovery_timeout) ||
5023 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5024 cur_params.dot11MeshHWMPactivePathTimeout) ||
5025 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5026 cur_params.dot11MeshHWMPpreqMinInterval) ||
5027 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5028 cur_params.dot11MeshHWMPperrMinInterval) ||
5029 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5030 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5031 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5032 cur_params.dot11MeshHWMPRootMode) ||
5033 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5034 cur_params.dot11MeshHWMPRannInterval) ||
5035 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5036 cur_params.dot11MeshGateAnnouncementProtocol) ||
5037 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5038 cur_params.dot11MeshForwarding) ||
5039 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5040 cur_params.rssi_threshold) ||
5041 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5042 cur_params.ht_opmode) ||
5043 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5044 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5045 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5046 cur_params.dot11MeshHWMProotInterval) ||
5047 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5048 cur_params.dot11MeshHWMPconfirmationInterval) ||
5049 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5050 cur_params.power_mode) ||
5051 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5052 cur_params.dot11MeshAwakeWindowDuration) ||
5053 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5054 cur_params.plink_timeout))
5055 goto nla_put_failure;
5056 nla_nest_end(msg, pinfoattr);
5057 genlmsg_end(msg, hdr);
5058 return genlmsg_reply(msg, info);
5059
5060 nla_put_failure:
5061 genlmsg_cancel(msg, hdr);
5062 out:
5063 nlmsg_free(msg);
5064 return -ENOBUFS;
5065 }
5066
5067 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5068 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5069 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5070 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5071 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5072 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5073 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5074 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5075 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5076 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5077 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5078 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5079 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5080 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5081 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5082 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5083 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5084 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5085 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5086 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5087 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5088 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5089 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5090 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5091 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5092 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5093 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5094 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5095 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5096 };
5097
5098 static const struct nla_policy
5099 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5100 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5101 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5102 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5103 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5104 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5105 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5106 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5107 .len = IEEE80211_MAX_DATA_LEN },
5108 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5109 };
5110
5111 static int nl80211_parse_mesh_config(struct genl_info *info,
5112 struct mesh_config *cfg,
5113 u32 *mask_out)
5114 {
5115 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5116 u32 mask = 0;
5117
5118 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5119 do { \
5120 if (tb[attr]) { \
5121 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5122 return -EINVAL; \
5123 cfg->param = fn(tb[attr]); \
5124 mask |= (1 << (attr - 1)); \
5125 } \
5126 } while (0)
5127
5128
5129 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5130 return -EINVAL;
5131 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5132 info->attrs[NL80211_ATTR_MESH_CONFIG],
5133 nl80211_meshconf_params_policy))
5134 return -EINVAL;
5135
5136 /* This makes sure that there aren't more than 32 mesh config
5137 * parameters (otherwise our bitfield scheme would not work.) */
5138 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5139
5140 /* Fill in the params struct */
5141 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5142 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5143 nla_get_u16);
5144 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5145 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5146 nla_get_u16);
5147 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5148 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5149 nla_get_u16);
5150 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5151 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5152 nla_get_u16);
5153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5154 mask, NL80211_MESHCONF_MAX_RETRIES,
5155 nla_get_u8);
5156 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5157 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5158 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5159 mask, NL80211_MESHCONF_ELEMENT_TTL,
5160 nla_get_u8);
5161 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5162 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5163 nla_get_u8);
5164 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5165 1, 255, mask,
5166 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5167 nla_get_u32);
5168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5169 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5170 nla_get_u8);
5171 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5172 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5173 nla_get_u32);
5174 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5175 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5176 nla_get_u16);
5177 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5178 1, 65535, mask,
5179 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5180 nla_get_u32);
5181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5182 1, 65535, mask,
5183 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5184 nla_get_u16);
5185 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5186 1, 65535, mask,
5187 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5188 nla_get_u16);
5189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5190 dot11MeshHWMPnetDiameterTraversalTime,
5191 1, 65535, mask,
5192 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5193 nla_get_u16);
5194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5195 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5196 nla_get_u8);
5197 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5198 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5199 nla_get_u16);
5200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5201 dot11MeshGateAnnouncementProtocol, 0, 1,
5202 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5203 nla_get_u8);
5204 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5205 mask, NL80211_MESHCONF_FORWARDING,
5206 nla_get_u8);
5207 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5208 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5209 nla_get_s32);
5210 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5211 mask, NL80211_MESHCONF_HT_OPMODE,
5212 nla_get_u16);
5213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5214 1, 65535, mask,
5215 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5216 nla_get_u32);
5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5218 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5219 nla_get_u16);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5221 dot11MeshHWMPconfirmationInterval,
5222 1, 65535, mask,
5223 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5224 nla_get_u16);
5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5226 NL80211_MESH_POWER_ACTIVE,
5227 NL80211_MESH_POWER_MAX,
5228 mask, NL80211_MESHCONF_POWER_MODE,
5229 nla_get_u32);
5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5231 0, 65535, mask,
5232 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5233 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5234 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5235 nla_get_u32);
5236 if (mask_out)
5237 *mask_out = mask;
5238
5239 return 0;
5240
5241 #undef FILL_IN_MESH_PARAM_IF_SET
5242 }
5243
5244 static int nl80211_parse_mesh_setup(struct genl_info *info,
5245 struct mesh_setup *setup)
5246 {
5247 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5248 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5249
5250 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5251 return -EINVAL;
5252 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5253 info->attrs[NL80211_ATTR_MESH_SETUP],
5254 nl80211_mesh_setup_params_policy))
5255 return -EINVAL;
5256
5257 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5258 setup->sync_method =
5259 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5260 IEEE80211_SYNC_METHOD_VENDOR :
5261 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5262
5263 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5264 setup->path_sel_proto =
5265 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5266 IEEE80211_PATH_PROTOCOL_VENDOR :
5267 IEEE80211_PATH_PROTOCOL_HWMP;
5268
5269 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5270 setup->path_metric =
5271 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5272 IEEE80211_PATH_METRIC_VENDOR :
5273 IEEE80211_PATH_METRIC_AIRTIME;
5274
5275
5276 if (tb[NL80211_MESH_SETUP_IE]) {
5277 struct nlattr *ieattr =
5278 tb[NL80211_MESH_SETUP_IE];
5279 if (!is_valid_ie_attr(ieattr))
5280 return -EINVAL;
5281 setup->ie = nla_data(ieattr);
5282 setup->ie_len = nla_len(ieattr);
5283 }
5284 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5285 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5286 return -EINVAL;
5287 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5288 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5289 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5290 if (setup->is_secure)
5291 setup->user_mpm = true;
5292
5293 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5294 if (!setup->user_mpm)
5295 return -EINVAL;
5296 setup->auth_id =
5297 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5298 }
5299
5300 return 0;
5301 }
5302
5303 static int nl80211_update_mesh_config(struct sk_buff *skb,
5304 struct genl_info *info)
5305 {
5306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5307 struct net_device *dev = info->user_ptr[1];
5308 struct wireless_dev *wdev = dev->ieee80211_ptr;
5309 struct mesh_config cfg;
5310 u32 mask;
5311 int err;
5312
5313 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5314 return -EOPNOTSUPP;
5315
5316 if (!rdev->ops->update_mesh_config)
5317 return -EOPNOTSUPP;
5318
5319 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5320 if (err)
5321 return err;
5322
5323 wdev_lock(wdev);
5324 if (!wdev->mesh_id_len)
5325 err = -ENOLINK;
5326
5327 if (!err)
5328 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5329
5330 wdev_unlock(wdev);
5331
5332 return err;
5333 }
5334
5335 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5336 struct sk_buff *msg)
5337 {
5338 struct nlattr *nl_reg_rules;
5339 unsigned int i;
5340
5341 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5342 (regdom->dfs_region &&
5343 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5344 goto nla_put_failure;
5345
5346 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5347 if (!nl_reg_rules)
5348 goto nla_put_failure;
5349
5350 for (i = 0; i < regdom->n_reg_rules; i++) {
5351 struct nlattr *nl_reg_rule;
5352 const struct ieee80211_reg_rule *reg_rule;
5353 const struct ieee80211_freq_range *freq_range;
5354 const struct ieee80211_power_rule *power_rule;
5355 unsigned int max_bandwidth_khz;
5356
5357 reg_rule = &regdom->reg_rules[i];
5358 freq_range = &reg_rule->freq_range;
5359 power_rule = &reg_rule->power_rule;
5360
5361 nl_reg_rule = nla_nest_start(msg, i);
5362 if (!nl_reg_rule)
5363 goto nla_put_failure;
5364
5365 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5366 if (!max_bandwidth_khz)
5367 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5368 reg_rule);
5369
5370 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5371 reg_rule->flags) ||
5372 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5373 freq_range->start_freq_khz) ||
5374 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5375 freq_range->end_freq_khz) ||
5376 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5377 max_bandwidth_khz) ||
5378 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5379 power_rule->max_antenna_gain) ||
5380 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5381 power_rule->max_eirp) ||
5382 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5383 reg_rule->dfs_cac_ms))
5384 goto nla_put_failure;
5385
5386 nla_nest_end(msg, nl_reg_rule);
5387 }
5388
5389 nla_nest_end(msg, nl_reg_rules);
5390 return 0;
5391
5392 nla_put_failure:
5393 return -EMSGSIZE;
5394 }
5395
5396 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5397 {
5398 const struct ieee80211_regdomain *regdom = NULL;
5399 struct cfg80211_registered_device *rdev;
5400 struct wiphy *wiphy = NULL;
5401 struct sk_buff *msg;
5402 void *hdr;
5403
5404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5405 if (!msg)
5406 return -ENOBUFS;
5407
5408 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5409 NL80211_CMD_GET_REG);
5410 if (!hdr)
5411 goto put_failure;
5412
5413 if (info->attrs[NL80211_ATTR_WIPHY]) {
5414 bool self_managed;
5415
5416 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5417 if (IS_ERR(rdev)) {
5418 nlmsg_free(msg);
5419 return PTR_ERR(rdev);
5420 }
5421
5422 wiphy = &rdev->wiphy;
5423 self_managed = wiphy->regulatory_flags &
5424 REGULATORY_WIPHY_SELF_MANAGED;
5425 regdom = get_wiphy_regdom(wiphy);
5426
5427 /* a self-managed-reg device must have a private regdom */
5428 if (WARN_ON(!regdom && self_managed)) {
5429 nlmsg_free(msg);
5430 return -EINVAL;
5431 }
5432
5433 if (regdom &&
5434 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5435 goto nla_put_failure;
5436 }
5437
5438 if (!wiphy && reg_last_request_cell_base() &&
5439 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5440 NL80211_USER_REG_HINT_CELL_BASE))
5441 goto nla_put_failure;
5442
5443 rcu_read_lock();
5444
5445 if (!regdom)
5446 regdom = rcu_dereference(cfg80211_regdomain);
5447
5448 if (nl80211_put_regdom(regdom, msg))
5449 goto nla_put_failure_rcu;
5450
5451 rcu_read_unlock();
5452
5453 genlmsg_end(msg, hdr);
5454 return genlmsg_reply(msg, info);
5455
5456 nla_put_failure_rcu:
5457 rcu_read_unlock();
5458 nla_put_failure:
5459 genlmsg_cancel(msg, hdr);
5460 put_failure:
5461 nlmsg_free(msg);
5462 return -EMSGSIZE;
5463 }
5464
5465 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5466 u32 seq, int flags, struct wiphy *wiphy,
5467 const struct ieee80211_regdomain *regdom)
5468 {
5469 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5470 NL80211_CMD_GET_REG);
5471
5472 if (!hdr)
5473 return -1;
5474
5475 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5476
5477 if (nl80211_put_regdom(regdom, msg))
5478 goto nla_put_failure;
5479
5480 if (!wiphy && reg_last_request_cell_base() &&
5481 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5482 NL80211_USER_REG_HINT_CELL_BASE))
5483 goto nla_put_failure;
5484
5485 if (wiphy &&
5486 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5487 goto nla_put_failure;
5488
5489 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5490 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5491 goto nla_put_failure;
5492
5493 return genlmsg_end(msg, hdr);
5494
5495 nla_put_failure:
5496 genlmsg_cancel(msg, hdr);
5497 return -EMSGSIZE;
5498 }
5499
5500 static int nl80211_get_reg_dump(struct sk_buff *skb,
5501 struct netlink_callback *cb)
5502 {
5503 const struct ieee80211_regdomain *regdom = NULL;
5504 struct cfg80211_registered_device *rdev;
5505 int err, reg_idx, start = cb->args[2];
5506
5507 rtnl_lock();
5508
5509 if (cfg80211_regdomain && start == 0) {
5510 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5511 NLM_F_MULTI, NULL,
5512 rtnl_dereference(cfg80211_regdomain));
5513 if (err < 0)
5514 goto out_err;
5515 }
5516
5517 /* the global regdom is idx 0 */
5518 reg_idx = 1;
5519 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5520 regdom = get_wiphy_regdom(&rdev->wiphy);
5521 if (!regdom)
5522 continue;
5523
5524 if (++reg_idx <= start)
5525 continue;
5526
5527 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5528 NLM_F_MULTI, &rdev->wiphy, regdom);
5529 if (err < 0) {
5530 reg_idx--;
5531 break;
5532 }
5533 }
5534
5535 cb->args[2] = reg_idx;
5536 err = skb->len;
5537 out_err:
5538 rtnl_unlock();
5539 return err;
5540 }
5541
5542 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5543 {
5544 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5545 struct nlattr *nl_reg_rule;
5546 char *alpha2;
5547 int rem_reg_rules, r;
5548 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5549 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5550 struct ieee80211_regdomain *rd;
5551
5552 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5553 return -EINVAL;
5554
5555 if (!info->attrs[NL80211_ATTR_REG_RULES])
5556 return -EINVAL;
5557
5558 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5559
5560 if (info->attrs[NL80211_ATTR_DFS_REGION])
5561 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5562
5563 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5564 rem_reg_rules) {
5565 num_rules++;
5566 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5567 return -EINVAL;
5568 }
5569
5570 if (!reg_is_valid_request(alpha2))
5571 return -EINVAL;
5572
5573 size_of_regd = sizeof(struct ieee80211_regdomain) +
5574 num_rules * sizeof(struct ieee80211_reg_rule);
5575
5576 rd = kzalloc(size_of_regd, GFP_KERNEL);
5577 if (!rd)
5578 return -ENOMEM;
5579
5580 rd->n_reg_rules = num_rules;
5581 rd->alpha2[0] = alpha2[0];
5582 rd->alpha2[1] = alpha2[1];
5583
5584 /*
5585 * Disable DFS master mode if the DFS region was
5586 * not supported or known on this kernel.
5587 */
5588 if (reg_supported_dfs_region(dfs_region))
5589 rd->dfs_region = dfs_region;
5590
5591 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5592 rem_reg_rules) {
5593 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5594 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5595 reg_rule_policy);
5596 if (r)
5597 goto bad_reg;
5598 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5599 if (r)
5600 goto bad_reg;
5601
5602 rule_idx++;
5603
5604 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5605 r = -EINVAL;
5606 goto bad_reg;
5607 }
5608 }
5609
5610 r = set_regdom(rd);
5611 /* set_regdom took ownership */
5612 rd = NULL;
5613
5614 bad_reg:
5615 kfree(rd);
5616 return r;
5617 }
5618
5619 static int validate_scan_freqs(struct nlattr *freqs)
5620 {
5621 struct nlattr *attr1, *attr2;
5622 int n_channels = 0, tmp1, tmp2;
5623
5624 nla_for_each_nested(attr1, freqs, tmp1) {
5625 n_channels++;
5626 /*
5627 * Some hardware has a limited channel list for
5628 * scanning, and it is pretty much nonsensical
5629 * to scan for a channel twice, so disallow that
5630 * and don't require drivers to check that the
5631 * channel list they get isn't longer than what
5632 * they can scan, as long as they can scan all
5633 * the channels they registered at once.
5634 */
5635 nla_for_each_nested(attr2, freqs, tmp2)
5636 if (attr1 != attr2 &&
5637 nla_get_u32(attr1) == nla_get_u32(attr2))
5638 return 0;
5639 }
5640
5641 return n_channels;
5642 }
5643
5644 static int nl80211_parse_random_mac(struct nlattr **attrs,
5645 u8 *mac_addr, u8 *mac_addr_mask)
5646 {
5647 int i;
5648
5649 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5650 memset(mac_addr, 0, ETH_ALEN);
5651 memset(mac_addr_mask, 0, ETH_ALEN);
5652 mac_addr[0] = 0x2;
5653 mac_addr_mask[0] = 0x3;
5654
5655 return 0;
5656 }
5657
5658 /* need both or none */
5659 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5660 return -EINVAL;
5661
5662 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5663 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5664
5665 /* don't allow or configure an mcast address */
5666 if (!is_multicast_ether_addr(mac_addr_mask) ||
5667 is_multicast_ether_addr(mac_addr))
5668 return -EINVAL;
5669
5670 /*
5671 * allow users to pass a MAC address that has bits set outside
5672 * of the mask, but don't bother drivers with having to deal
5673 * with such bits
5674 */
5675 for (i = 0; i < ETH_ALEN; i++)
5676 mac_addr[i] &= mac_addr_mask[i];
5677
5678 return 0;
5679 }
5680
5681 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5682 {
5683 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5684 struct wireless_dev *wdev = info->user_ptr[1];
5685 struct cfg80211_scan_request *request;
5686 struct nlattr *attr;
5687 struct wiphy *wiphy;
5688 int err, tmp, n_ssids = 0, n_channels, i;
5689 size_t ie_len;
5690
5691 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5692 return -EINVAL;
5693
5694 wiphy = &rdev->wiphy;
5695
5696 if (!rdev->ops->scan)
5697 return -EOPNOTSUPP;
5698
5699 if (rdev->scan_req || rdev->scan_msg) {
5700 err = -EBUSY;
5701 goto unlock;
5702 }
5703
5704 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5705 n_channels = validate_scan_freqs(
5706 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5707 if (!n_channels) {
5708 err = -EINVAL;
5709 goto unlock;
5710 }
5711 } else {
5712 n_channels = ieee80211_get_num_supported_channels(wiphy);
5713 }
5714
5715 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5716 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5717 n_ssids++;
5718
5719 if (n_ssids > wiphy->max_scan_ssids) {
5720 err = -EINVAL;
5721 goto unlock;
5722 }
5723
5724 if (info->attrs[NL80211_ATTR_IE])
5725 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5726 else
5727 ie_len = 0;
5728
5729 if (ie_len > wiphy->max_scan_ie_len) {
5730 err = -EINVAL;
5731 goto unlock;
5732 }
5733
5734 request = kzalloc(sizeof(*request)
5735 + sizeof(*request->ssids) * n_ssids
5736 + sizeof(*request->channels) * n_channels
5737 + ie_len, GFP_KERNEL);
5738 if (!request) {
5739 err = -ENOMEM;
5740 goto unlock;
5741 }
5742
5743 if (n_ssids)
5744 request->ssids = (void *)&request->channels[n_channels];
5745 request->n_ssids = n_ssids;
5746 if (ie_len) {
5747 if (request->ssids)
5748 request->ie = (void *)(request->ssids + n_ssids);
5749 else
5750 request->ie = (void *)(request->channels + n_channels);
5751 }
5752
5753 i = 0;
5754 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5755 /* user specified, bail out if channel not found */
5756 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5757 struct ieee80211_channel *chan;
5758
5759 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5760
5761 if (!chan) {
5762 err = -EINVAL;
5763 goto out_free;
5764 }
5765
5766 /* ignore disabled channels */
5767 if (chan->flags & IEEE80211_CHAN_DISABLED)
5768 continue;
5769
5770 request->channels[i] = chan;
5771 i++;
5772 }
5773 } else {
5774 enum ieee80211_band band;
5775
5776 /* all channels */
5777 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5778 int j;
5779 if (!wiphy->bands[band])
5780 continue;
5781 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5782 struct ieee80211_channel *chan;
5783
5784 chan = &wiphy->bands[band]->channels[j];
5785
5786 if (chan->flags & IEEE80211_CHAN_DISABLED)
5787 continue;
5788
5789 request->channels[i] = chan;
5790 i++;
5791 }
5792 }
5793 }
5794
5795 if (!i) {
5796 err = -EINVAL;
5797 goto out_free;
5798 }
5799
5800 request->n_channels = i;
5801
5802 i = 0;
5803 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5804 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5805 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5806 err = -EINVAL;
5807 goto out_free;
5808 }
5809 request->ssids[i].ssid_len = nla_len(attr);
5810 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5811 i++;
5812 }
5813 }
5814
5815 if (info->attrs[NL80211_ATTR_IE]) {
5816 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5817 memcpy((void *)request->ie,
5818 nla_data(info->attrs[NL80211_ATTR_IE]),
5819 request->ie_len);
5820 }
5821
5822 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5823 if (wiphy->bands[i])
5824 request->rates[i] =
5825 (1 << wiphy->bands[i]->n_bitrates) - 1;
5826
5827 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5828 nla_for_each_nested(attr,
5829 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5830 tmp) {
5831 enum ieee80211_band band = nla_type(attr);
5832
5833 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5834 err = -EINVAL;
5835 goto out_free;
5836 }
5837
5838 if (!wiphy->bands[band])
5839 continue;
5840
5841 err = ieee80211_get_ratemask(wiphy->bands[band],
5842 nla_data(attr),
5843 nla_len(attr),
5844 &request->rates[band]);
5845 if (err)
5846 goto out_free;
5847 }
5848 }
5849
5850 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5851 request->flags = nla_get_u32(
5852 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5853 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5854 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5855 err = -EOPNOTSUPP;
5856 goto out_free;
5857 }
5858
5859 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5860 if (!(wiphy->features &
5861 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5862 err = -EOPNOTSUPP;
5863 goto out_free;
5864 }
5865
5866 if (wdev->current_bss) {
5867 err = -EOPNOTSUPP;
5868 goto out_free;
5869 }
5870
5871 err = nl80211_parse_random_mac(info->attrs,
5872 request->mac_addr,
5873 request->mac_addr_mask);
5874 if (err)
5875 goto out_free;
5876 }
5877 }
5878
5879 request->no_cck =
5880 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5881
5882 request->wdev = wdev;
5883 request->wiphy = &rdev->wiphy;
5884 request->scan_start = jiffies;
5885
5886 rdev->scan_req = request;
5887 err = rdev_scan(rdev, request);
5888
5889 if (!err) {
5890 nl80211_send_scan_start(rdev, wdev);
5891 if (wdev->netdev)
5892 dev_hold(wdev->netdev);
5893 } else {
5894 out_free:
5895 rdev->scan_req = NULL;
5896 kfree(request);
5897 }
5898
5899 unlock:
5900 return err;
5901 }
5902
5903 static struct cfg80211_sched_scan_request *
5904 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5905 struct nlattr **attrs)
5906 {
5907 struct cfg80211_sched_scan_request *request;
5908 struct nlattr *attr;
5909 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5910 u32 interval;
5911 enum ieee80211_band band;
5912 size_t ie_len;
5913 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5914 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5915
5916 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5917 return ERR_PTR(-EINVAL);
5918
5919 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5920 return ERR_PTR(-EINVAL);
5921
5922 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5923 if (interval == 0)
5924 return ERR_PTR(-EINVAL);
5925
5926 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5927 n_channels = validate_scan_freqs(
5928 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5929 if (!n_channels)
5930 return ERR_PTR(-EINVAL);
5931 } else {
5932 n_channels = ieee80211_get_num_supported_channels(wiphy);
5933 }
5934
5935 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5936 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5937 tmp)
5938 n_ssids++;
5939
5940 if (n_ssids > wiphy->max_sched_scan_ssids)
5941 return ERR_PTR(-EINVAL);
5942
5943 /*
5944 * First, count the number of 'real' matchsets. Due to an issue with
5945 * the old implementation, matchsets containing only the RSSI attribute
5946 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5947 * RSSI for all matchsets, rather than their own matchset for reporting
5948 * all APs with a strong RSSI. This is needed to be compatible with
5949 * older userspace that treated a matchset with only the RSSI as the
5950 * global RSSI for all other matchsets - if there are other matchsets.
5951 */
5952 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5953 nla_for_each_nested(attr,
5954 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5955 tmp) {
5956 struct nlattr *rssi;
5957
5958 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5959 nla_data(attr), nla_len(attr),
5960 nl80211_match_policy);
5961 if (err)
5962 return ERR_PTR(err);
5963 /* add other standalone attributes here */
5964 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5965 n_match_sets++;
5966 continue;
5967 }
5968 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5969 if (rssi)
5970 default_match_rssi = nla_get_s32(rssi);
5971 }
5972 }
5973
5974 /* However, if there's no other matchset, add the RSSI one */
5975 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5976 n_match_sets = 1;
5977
5978 if (n_match_sets > wiphy->max_match_sets)
5979 return ERR_PTR(-EINVAL);
5980
5981 if (attrs[NL80211_ATTR_IE])
5982 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5983 else
5984 ie_len = 0;
5985
5986 if (ie_len > wiphy->max_sched_scan_ie_len)
5987 return ERR_PTR(-EINVAL);
5988
5989 request = kzalloc(sizeof(*request)
5990 + sizeof(*request->ssids) * n_ssids
5991 + sizeof(*request->match_sets) * n_match_sets
5992 + sizeof(*request->channels) * n_channels
5993 + ie_len, GFP_KERNEL);
5994 if (!request)
5995 return ERR_PTR(-ENOMEM);
5996
5997 if (n_ssids)
5998 request->ssids = (void *)&request->channels[n_channels];
5999 request->n_ssids = n_ssids;
6000 if (ie_len) {
6001 if (request->ssids)
6002 request->ie = (void *)(request->ssids + n_ssids);
6003 else
6004 request->ie = (void *)(request->channels + n_channels);
6005 }
6006
6007 if (n_match_sets) {
6008 if (request->ie)
6009 request->match_sets = (void *)(request->ie + ie_len);
6010 else if (request->ssids)
6011 request->match_sets =
6012 (void *)(request->ssids + n_ssids);
6013 else
6014 request->match_sets =
6015 (void *)(request->channels + n_channels);
6016 }
6017 request->n_match_sets = n_match_sets;
6018
6019 i = 0;
6020 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6021 /* user specified, bail out if channel not found */
6022 nla_for_each_nested(attr,
6023 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6024 tmp) {
6025 struct ieee80211_channel *chan;
6026
6027 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6028
6029 if (!chan) {
6030 err = -EINVAL;
6031 goto out_free;
6032 }
6033
6034 /* ignore disabled channels */
6035 if (chan->flags & IEEE80211_CHAN_DISABLED)
6036 continue;
6037
6038 request->channels[i] = chan;
6039 i++;
6040 }
6041 } else {
6042 /* all channels */
6043 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6044 int j;
6045 if (!wiphy->bands[band])
6046 continue;
6047 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6048 struct ieee80211_channel *chan;
6049
6050 chan = &wiphy->bands[band]->channels[j];
6051
6052 if (chan->flags & IEEE80211_CHAN_DISABLED)
6053 continue;
6054
6055 request->channels[i] = chan;
6056 i++;
6057 }
6058 }
6059 }
6060
6061 if (!i) {
6062 err = -EINVAL;
6063 goto out_free;
6064 }
6065
6066 request->n_channels = i;
6067
6068 i = 0;
6069 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6070 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6071 tmp) {
6072 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6073 err = -EINVAL;
6074 goto out_free;
6075 }
6076 request->ssids[i].ssid_len = nla_len(attr);
6077 memcpy(request->ssids[i].ssid, nla_data(attr),
6078 nla_len(attr));
6079 i++;
6080 }
6081 }
6082
6083 i = 0;
6084 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6085 nla_for_each_nested(attr,
6086 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6087 tmp) {
6088 struct nlattr *ssid, *rssi;
6089
6090 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6091 nla_data(attr), nla_len(attr),
6092 nl80211_match_policy);
6093 if (err)
6094 goto out_free;
6095 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6096 if (ssid) {
6097 if (WARN_ON(i >= n_match_sets)) {
6098 /* this indicates a programming error,
6099 * the loop above should have verified
6100 * things properly
6101 */
6102 err = -EINVAL;
6103 goto out_free;
6104 }
6105
6106 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6107 err = -EINVAL;
6108 goto out_free;
6109 }
6110 memcpy(request->match_sets[i].ssid.ssid,
6111 nla_data(ssid), nla_len(ssid));
6112 request->match_sets[i].ssid.ssid_len =
6113 nla_len(ssid);
6114 /* special attribute - old implemenation w/a */
6115 request->match_sets[i].rssi_thold =
6116 default_match_rssi;
6117 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6118 if (rssi)
6119 request->match_sets[i].rssi_thold =
6120 nla_get_s32(rssi);
6121 }
6122 i++;
6123 }
6124
6125 /* there was no other matchset, so the RSSI one is alone */
6126 if (i == 0)
6127 request->match_sets[0].rssi_thold = default_match_rssi;
6128
6129 request->min_rssi_thold = INT_MAX;
6130 for (i = 0; i < n_match_sets; i++)
6131 request->min_rssi_thold =
6132 min(request->match_sets[i].rssi_thold,
6133 request->min_rssi_thold);
6134 } else {
6135 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6136 }
6137
6138 if (ie_len) {
6139 request->ie_len = ie_len;
6140 memcpy((void *)request->ie,
6141 nla_data(attrs[NL80211_ATTR_IE]),
6142 request->ie_len);
6143 }
6144
6145 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6146 request->flags = nla_get_u32(
6147 attrs[NL80211_ATTR_SCAN_FLAGS]);
6148 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6149 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6150 err = -EOPNOTSUPP;
6151 goto out_free;
6152 }
6153
6154 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6155 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6156
6157 if (!wdev) /* must be net-detect */
6158 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6159
6160 if (!(wiphy->features & flg)) {
6161 err = -EOPNOTSUPP;
6162 goto out_free;
6163 }
6164
6165 if (wdev && wdev->current_bss) {
6166 err = -EOPNOTSUPP;
6167 goto out_free;
6168 }
6169
6170 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6171 request->mac_addr_mask);
6172 if (err)
6173 goto out_free;
6174 }
6175 }
6176
6177 request->interval = interval;
6178 request->scan_start = jiffies;
6179
6180 return request;
6181
6182 out_free:
6183 kfree(request);
6184 return ERR_PTR(err);
6185 }
6186
6187 static int nl80211_start_sched_scan(struct sk_buff *skb,
6188 struct genl_info *info)
6189 {
6190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6191 struct net_device *dev = info->user_ptr[1];
6192 struct wireless_dev *wdev = dev->ieee80211_ptr;
6193 int err;
6194
6195 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6196 !rdev->ops->sched_scan_start)
6197 return -EOPNOTSUPP;
6198
6199 if (rdev->sched_scan_req)
6200 return -EINPROGRESS;
6201
6202 rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6203 info->attrs);
6204 err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
6205 if (err)
6206 goto out_err;
6207
6208 err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
6209 if (err)
6210 goto out_free;
6211
6212 rdev->sched_scan_req->dev = dev;
6213 rdev->sched_scan_req->wiphy = &rdev->wiphy;
6214
6215 nl80211_send_sched_scan(rdev, dev,
6216 NL80211_CMD_START_SCHED_SCAN);
6217 return 0;
6218
6219 out_free:
6220 kfree(rdev->sched_scan_req);
6221 out_err:
6222 rdev->sched_scan_req = NULL;
6223 return err;
6224 }
6225
6226 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6227 struct genl_info *info)
6228 {
6229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6230
6231 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6232 !rdev->ops->sched_scan_stop)
6233 return -EOPNOTSUPP;
6234
6235 return __cfg80211_stop_sched_scan(rdev, false);
6236 }
6237
6238 static int nl80211_start_radar_detection(struct sk_buff *skb,
6239 struct genl_info *info)
6240 {
6241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6242 struct net_device *dev = info->user_ptr[1];
6243 struct wireless_dev *wdev = dev->ieee80211_ptr;
6244 struct cfg80211_chan_def chandef;
6245 enum nl80211_dfs_regions dfs_region;
6246 unsigned int cac_time_ms;
6247 int err;
6248
6249 dfs_region = reg_get_dfs_region(wdev->wiphy);
6250 if (dfs_region == NL80211_DFS_UNSET)
6251 return -EINVAL;
6252
6253 err = nl80211_parse_chandef(rdev, info, &chandef);
6254 if (err)
6255 return err;
6256
6257 if (netif_carrier_ok(dev))
6258 return -EBUSY;
6259
6260 if (wdev->cac_started)
6261 return -EBUSY;
6262
6263 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6264 wdev->iftype);
6265 if (err < 0)
6266 return err;
6267
6268 if (err == 0)
6269 return -EINVAL;
6270
6271 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6272 return -EINVAL;
6273
6274 if (!rdev->ops->start_radar_detection)
6275 return -EOPNOTSUPP;
6276
6277 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6278 if (WARN_ON(!cac_time_ms))
6279 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6280
6281 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6282 cac_time_ms);
6283 if (!err) {
6284 wdev->chandef = chandef;
6285 wdev->cac_started = true;
6286 wdev->cac_start_time = jiffies;
6287 wdev->cac_time_ms = cac_time_ms;
6288 }
6289 return err;
6290 }
6291
6292 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6293 {
6294 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6295 struct net_device *dev = info->user_ptr[1];
6296 struct wireless_dev *wdev = dev->ieee80211_ptr;
6297 struct cfg80211_csa_settings params;
6298 /* csa_attrs is defined static to avoid waste of stack size - this
6299 * function is called under RTNL lock, so this should not be a problem.
6300 */
6301 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6302 int err;
6303 bool need_new_beacon = false;
6304 int len, i;
6305 u32 cs_count;
6306
6307 if (!rdev->ops->channel_switch ||
6308 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6309 return -EOPNOTSUPP;
6310
6311 switch (dev->ieee80211_ptr->iftype) {
6312 case NL80211_IFTYPE_AP:
6313 case NL80211_IFTYPE_P2P_GO:
6314 need_new_beacon = true;
6315
6316 /* useless if AP is not running */
6317 if (!wdev->beacon_interval)
6318 return -ENOTCONN;
6319 break;
6320 case NL80211_IFTYPE_ADHOC:
6321 if (!wdev->ssid_len)
6322 return -ENOTCONN;
6323 break;
6324 case NL80211_IFTYPE_MESH_POINT:
6325 if (!wdev->mesh_id_len)
6326 return -ENOTCONN;
6327 break;
6328 default:
6329 return -EOPNOTSUPP;
6330 }
6331
6332 memset(&params, 0, sizeof(params));
6333
6334 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6335 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6336 return -EINVAL;
6337
6338 /* only important for AP, IBSS and mesh create IEs internally */
6339 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6340 return -EINVAL;
6341
6342 /* Even though the attribute is u32, the specification says
6343 * u8, so let's make sure we don't overflow.
6344 */
6345 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6346 if (cs_count > 255)
6347 return -EINVAL;
6348
6349 params.count = cs_count;
6350
6351 if (!need_new_beacon)
6352 goto skip_beacons;
6353
6354 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6355 if (err)
6356 return err;
6357
6358 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6359 info->attrs[NL80211_ATTR_CSA_IES],
6360 nl80211_policy);
6361 if (err)
6362 return err;
6363
6364 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6365 if (err)
6366 return err;
6367
6368 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6369 return -EINVAL;
6370
6371 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6372 if (!len || (len % sizeof(u16)))
6373 return -EINVAL;
6374
6375 params.n_counter_offsets_beacon = len / sizeof(u16);
6376 if (rdev->wiphy.max_num_csa_counters &&
6377 (params.n_counter_offsets_beacon >
6378 rdev->wiphy.max_num_csa_counters))
6379 return -EINVAL;
6380
6381 params.counter_offsets_beacon =
6382 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6383
6384 /* sanity checks - counters should fit and be the same */
6385 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6386 u16 offset = params.counter_offsets_beacon[i];
6387
6388 if (offset >= params.beacon_csa.tail_len)
6389 return -EINVAL;
6390
6391 if (params.beacon_csa.tail[offset] != params.count)
6392 return -EINVAL;
6393 }
6394
6395 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6396 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6397 if (!len || (len % sizeof(u16)))
6398 return -EINVAL;
6399
6400 params.n_counter_offsets_presp = len / sizeof(u16);
6401 if (rdev->wiphy.max_num_csa_counters &&
6402 (params.n_counter_offsets_beacon >
6403 rdev->wiphy.max_num_csa_counters))
6404 return -EINVAL;
6405
6406 params.counter_offsets_presp =
6407 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6408
6409 /* sanity checks - counters should fit and be the same */
6410 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6411 u16 offset = params.counter_offsets_presp[i];
6412
6413 if (offset >= params.beacon_csa.probe_resp_len)
6414 return -EINVAL;
6415
6416 if (params.beacon_csa.probe_resp[offset] !=
6417 params.count)
6418 return -EINVAL;
6419 }
6420 }
6421
6422 skip_beacons:
6423 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6424 if (err)
6425 return err;
6426
6427 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6428 wdev->iftype))
6429 return -EINVAL;
6430
6431 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6432 &params.chandef,
6433 wdev->iftype);
6434 if (err < 0)
6435 return err;
6436
6437 if (err > 0)
6438 params.radar_required = true;
6439
6440 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6441 params.block_tx = true;
6442
6443 wdev_lock(wdev);
6444 err = rdev_channel_switch(rdev, dev, &params);
6445 wdev_unlock(wdev);
6446
6447 return err;
6448 }
6449
6450 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6451 u32 seq, int flags,
6452 struct cfg80211_registered_device *rdev,
6453 struct wireless_dev *wdev,
6454 struct cfg80211_internal_bss *intbss)
6455 {
6456 struct cfg80211_bss *res = &intbss->pub;
6457 const struct cfg80211_bss_ies *ies;
6458 void *hdr;
6459 struct nlattr *bss;
6460
6461 ASSERT_WDEV_LOCK(wdev);
6462
6463 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6464 NL80211_CMD_NEW_SCAN_RESULTS);
6465 if (!hdr)
6466 return -1;
6467
6468 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6469
6470 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6471 goto nla_put_failure;
6472 if (wdev->netdev &&
6473 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6474 goto nla_put_failure;
6475 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6476 goto nla_put_failure;
6477
6478 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6479 if (!bss)
6480 goto nla_put_failure;
6481 if ((!is_zero_ether_addr(res->bssid) &&
6482 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6483 goto nla_put_failure;
6484
6485 rcu_read_lock();
6486 /* indicate whether we have probe response data or not */
6487 if (rcu_access_pointer(res->proberesp_ies) &&
6488 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6489 goto fail_unlock_rcu;
6490
6491 /* this pointer prefers to be pointed to probe response data
6492 * but is always valid
6493 */
6494 ies = rcu_dereference(res->ies);
6495 if (ies) {
6496 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6497 goto fail_unlock_rcu;
6498 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6499 ies->len, ies->data))
6500 goto fail_unlock_rcu;
6501 }
6502
6503 /* and this pointer is always (unless driver didn't know) beacon data */
6504 ies = rcu_dereference(res->beacon_ies);
6505 if (ies && ies->from_beacon) {
6506 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6507 goto fail_unlock_rcu;
6508 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6509 ies->len, ies->data))
6510 goto fail_unlock_rcu;
6511 }
6512 rcu_read_unlock();
6513
6514 if (res->beacon_interval &&
6515 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6516 goto nla_put_failure;
6517 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6518 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6519 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6520 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6521 jiffies_to_msecs(jiffies - intbss->ts)))
6522 goto nla_put_failure;
6523
6524 switch (rdev->wiphy.signal_type) {
6525 case CFG80211_SIGNAL_TYPE_MBM:
6526 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6527 goto nla_put_failure;
6528 break;
6529 case CFG80211_SIGNAL_TYPE_UNSPEC:
6530 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6531 goto nla_put_failure;
6532 break;
6533 default:
6534 break;
6535 }
6536
6537 switch (wdev->iftype) {
6538 case NL80211_IFTYPE_P2P_CLIENT:
6539 case NL80211_IFTYPE_STATION:
6540 if (intbss == wdev->current_bss &&
6541 nla_put_u32(msg, NL80211_BSS_STATUS,
6542 NL80211_BSS_STATUS_ASSOCIATED))
6543 goto nla_put_failure;
6544 break;
6545 case NL80211_IFTYPE_ADHOC:
6546 if (intbss == wdev->current_bss &&
6547 nla_put_u32(msg, NL80211_BSS_STATUS,
6548 NL80211_BSS_STATUS_IBSS_JOINED))
6549 goto nla_put_failure;
6550 break;
6551 default:
6552 break;
6553 }
6554
6555 nla_nest_end(msg, bss);
6556
6557 return genlmsg_end(msg, hdr);
6558
6559 fail_unlock_rcu:
6560 rcu_read_unlock();
6561 nla_put_failure:
6562 genlmsg_cancel(msg, hdr);
6563 return -EMSGSIZE;
6564 }
6565
6566 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6567 {
6568 struct cfg80211_registered_device *rdev;
6569 struct cfg80211_internal_bss *scan;
6570 struct wireless_dev *wdev;
6571 int start = cb->args[2], idx = 0;
6572 int err;
6573
6574 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6575 if (err)
6576 return err;
6577
6578 wdev_lock(wdev);
6579 spin_lock_bh(&rdev->bss_lock);
6580 cfg80211_bss_expire(rdev);
6581
6582 cb->seq = rdev->bss_generation;
6583
6584 list_for_each_entry(scan, &rdev->bss_list, list) {
6585 if (++idx <= start)
6586 continue;
6587 if (nl80211_send_bss(skb, cb,
6588 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6589 rdev, wdev, scan) < 0) {
6590 idx--;
6591 break;
6592 }
6593 }
6594
6595 spin_unlock_bh(&rdev->bss_lock);
6596 wdev_unlock(wdev);
6597
6598 cb->args[2] = idx;
6599 nl80211_finish_wdev_dump(rdev);
6600
6601 return skb->len;
6602 }
6603
6604 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6605 int flags, struct net_device *dev,
6606 struct survey_info *survey)
6607 {
6608 void *hdr;
6609 struct nlattr *infoattr;
6610
6611 hdr = nl80211hdr_put(msg, portid, seq, flags,
6612 NL80211_CMD_NEW_SURVEY_RESULTS);
6613 if (!hdr)
6614 return -ENOMEM;
6615
6616 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6617 goto nla_put_failure;
6618
6619 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6620 if (!infoattr)
6621 goto nla_put_failure;
6622
6623 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6624 survey->channel->center_freq))
6625 goto nla_put_failure;
6626
6627 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6628 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6629 goto nla_put_failure;
6630 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6631 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6632 goto nla_put_failure;
6633 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6634 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6635 survey->channel_time))
6636 goto nla_put_failure;
6637 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6638 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6639 survey->channel_time_busy))
6640 goto nla_put_failure;
6641 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6642 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6643 survey->channel_time_ext_busy))
6644 goto nla_put_failure;
6645 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6646 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6647 survey->channel_time_rx))
6648 goto nla_put_failure;
6649 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6650 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6651 survey->channel_time_tx))
6652 goto nla_put_failure;
6653
6654 nla_nest_end(msg, infoattr);
6655
6656 return genlmsg_end(msg, hdr);
6657
6658 nla_put_failure:
6659 genlmsg_cancel(msg, hdr);
6660 return -EMSGSIZE;
6661 }
6662
6663 static int nl80211_dump_survey(struct sk_buff *skb,
6664 struct netlink_callback *cb)
6665 {
6666 struct survey_info survey;
6667 struct cfg80211_registered_device *rdev;
6668 struct wireless_dev *wdev;
6669 int survey_idx = cb->args[2];
6670 int res;
6671
6672 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6673 if (res)
6674 return res;
6675
6676 if (!wdev->netdev) {
6677 res = -EINVAL;
6678 goto out_err;
6679 }
6680
6681 if (!rdev->ops->dump_survey) {
6682 res = -EOPNOTSUPP;
6683 goto out_err;
6684 }
6685
6686 while (1) {
6687 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6688 if (res == -ENOENT)
6689 break;
6690 if (res)
6691 goto out_err;
6692
6693 /* Survey without a channel doesn't make sense */
6694 if (!survey.channel) {
6695 res = -EINVAL;
6696 goto out;
6697 }
6698
6699 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6700 survey_idx++;
6701 continue;
6702 }
6703
6704 if (nl80211_send_survey(skb,
6705 NETLINK_CB(cb->skb).portid,
6706 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6707 wdev->netdev, &survey) < 0)
6708 goto out;
6709 survey_idx++;
6710 }
6711
6712 out:
6713 cb->args[2] = survey_idx;
6714 res = skb->len;
6715 out_err:
6716 nl80211_finish_wdev_dump(rdev);
6717 return res;
6718 }
6719
6720 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6721 {
6722 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6723 NL80211_WPA_VERSION_2));
6724 }
6725
6726 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6727 {
6728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6729 struct net_device *dev = info->user_ptr[1];
6730 struct ieee80211_channel *chan;
6731 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6732 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6733 enum nl80211_auth_type auth_type;
6734 struct key_parse key;
6735 bool local_state_change;
6736
6737 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6738 return -EINVAL;
6739
6740 if (!info->attrs[NL80211_ATTR_MAC])
6741 return -EINVAL;
6742
6743 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6744 return -EINVAL;
6745
6746 if (!info->attrs[NL80211_ATTR_SSID])
6747 return -EINVAL;
6748
6749 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6750 return -EINVAL;
6751
6752 err = nl80211_parse_key(info, &key);
6753 if (err)
6754 return err;
6755
6756 if (key.idx >= 0) {
6757 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6758 return -EINVAL;
6759 if (!key.p.key || !key.p.key_len)
6760 return -EINVAL;
6761 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6762 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6763 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6764 key.p.key_len != WLAN_KEY_LEN_WEP104))
6765 return -EINVAL;
6766 if (key.idx > 4)
6767 return -EINVAL;
6768 } else {
6769 key.p.key_len = 0;
6770 key.p.key = NULL;
6771 }
6772
6773 if (key.idx >= 0) {
6774 int i;
6775 bool ok = false;
6776 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6777 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6778 ok = true;
6779 break;
6780 }
6781 }
6782 if (!ok)
6783 return -EINVAL;
6784 }
6785
6786 if (!rdev->ops->auth)
6787 return -EOPNOTSUPP;
6788
6789 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6790 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6791 return -EOPNOTSUPP;
6792
6793 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6794 chan = nl80211_get_valid_chan(&rdev->wiphy,
6795 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6796 if (!chan)
6797 return -EINVAL;
6798
6799 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6800 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6801
6802 if (info->attrs[NL80211_ATTR_IE]) {
6803 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6804 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6805 }
6806
6807 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6808 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6809 return -EINVAL;
6810
6811 if (auth_type == NL80211_AUTHTYPE_SAE &&
6812 !info->attrs[NL80211_ATTR_SAE_DATA])
6813 return -EINVAL;
6814
6815 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6816 if (auth_type != NL80211_AUTHTYPE_SAE)
6817 return -EINVAL;
6818 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6819 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6820 /* need to include at least Auth Transaction and Status Code */
6821 if (sae_data_len < 4)
6822 return -EINVAL;
6823 }
6824
6825 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6826
6827 /*
6828 * Since we no longer track auth state, ignore
6829 * requests to only change local state.
6830 */
6831 if (local_state_change)
6832 return 0;
6833
6834 wdev_lock(dev->ieee80211_ptr);
6835 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6836 ssid, ssid_len, ie, ie_len,
6837 key.p.key, key.p.key_len, key.idx,
6838 sae_data, sae_data_len);
6839 wdev_unlock(dev->ieee80211_ptr);
6840 return err;
6841 }
6842
6843 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6844 struct genl_info *info,
6845 struct cfg80211_crypto_settings *settings,
6846 int cipher_limit)
6847 {
6848 memset(settings, 0, sizeof(*settings));
6849
6850 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6851
6852 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6853 u16 proto;
6854 proto = nla_get_u16(
6855 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6856 settings->control_port_ethertype = cpu_to_be16(proto);
6857 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6858 proto != ETH_P_PAE)
6859 return -EINVAL;
6860 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6861 settings->control_port_no_encrypt = true;
6862 } else
6863 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6864
6865 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6866 void *data;
6867 int len, i;
6868
6869 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6870 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6871 settings->n_ciphers_pairwise = len / sizeof(u32);
6872
6873 if (len % sizeof(u32))
6874 return -EINVAL;
6875
6876 if (settings->n_ciphers_pairwise > cipher_limit)
6877 return -EINVAL;
6878
6879 memcpy(settings->ciphers_pairwise, data, len);
6880
6881 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6882 if (!cfg80211_supported_cipher_suite(
6883 &rdev->wiphy,
6884 settings->ciphers_pairwise[i]))
6885 return -EINVAL;
6886 }
6887
6888 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6889 settings->cipher_group =
6890 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6891 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6892 settings->cipher_group))
6893 return -EINVAL;
6894 }
6895
6896 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6897 settings->wpa_versions =
6898 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6899 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6900 return -EINVAL;
6901 }
6902
6903 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6904 void *data;
6905 int len;
6906
6907 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6908 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6909 settings->n_akm_suites = len / sizeof(u32);
6910
6911 if (len % sizeof(u32))
6912 return -EINVAL;
6913
6914 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6915 return -EINVAL;
6916
6917 memcpy(settings->akm_suites, data, len);
6918 }
6919
6920 return 0;
6921 }
6922
6923 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6924 {
6925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6926 struct net_device *dev = info->user_ptr[1];
6927 struct ieee80211_channel *chan;
6928 struct cfg80211_assoc_request req = {};
6929 const u8 *bssid, *ssid;
6930 int err, ssid_len = 0;
6931
6932 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6933 return -EINVAL;
6934
6935 if (!info->attrs[NL80211_ATTR_MAC] ||
6936 !info->attrs[NL80211_ATTR_SSID] ||
6937 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6938 return -EINVAL;
6939
6940 if (!rdev->ops->assoc)
6941 return -EOPNOTSUPP;
6942
6943 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6944 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6945 return -EOPNOTSUPP;
6946
6947 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6948
6949 chan = nl80211_get_valid_chan(&rdev->wiphy,
6950 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6951 if (!chan)
6952 return -EINVAL;
6953
6954 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6955 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6956
6957 if (info->attrs[NL80211_ATTR_IE]) {
6958 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6959 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6960 }
6961
6962 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6963 enum nl80211_mfp mfp =
6964 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6965 if (mfp == NL80211_MFP_REQUIRED)
6966 req.use_mfp = true;
6967 else if (mfp != NL80211_MFP_NO)
6968 return -EINVAL;
6969 }
6970
6971 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6972 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6973
6974 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6975 req.flags |= ASSOC_REQ_DISABLE_HT;
6976
6977 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6978 memcpy(&req.ht_capa_mask,
6979 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6980 sizeof(req.ht_capa_mask));
6981
6982 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6983 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6984 return -EINVAL;
6985 memcpy(&req.ht_capa,
6986 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6987 sizeof(req.ht_capa));
6988 }
6989
6990 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6991 req.flags |= ASSOC_REQ_DISABLE_VHT;
6992
6993 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6994 memcpy(&req.vht_capa_mask,
6995 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6996 sizeof(req.vht_capa_mask));
6997
6998 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6999 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7000 return -EINVAL;
7001 memcpy(&req.vht_capa,
7002 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7003 sizeof(req.vht_capa));
7004 }
7005
7006 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7007 if (!(rdev->wiphy.features &
7008 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7009 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7010 return -EINVAL;
7011 req.flags |= ASSOC_REQ_USE_RRM;
7012 }
7013
7014 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7015 if (!err) {
7016 wdev_lock(dev->ieee80211_ptr);
7017 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7018 ssid, ssid_len, &req);
7019 wdev_unlock(dev->ieee80211_ptr);
7020 }
7021
7022 return err;
7023 }
7024
7025 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7026 {
7027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028 struct net_device *dev = info->user_ptr[1];
7029 const u8 *ie = NULL, *bssid;
7030 int ie_len = 0, err;
7031 u16 reason_code;
7032 bool local_state_change;
7033
7034 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7035 return -EINVAL;
7036
7037 if (!info->attrs[NL80211_ATTR_MAC])
7038 return -EINVAL;
7039
7040 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7041 return -EINVAL;
7042
7043 if (!rdev->ops->deauth)
7044 return -EOPNOTSUPP;
7045
7046 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7047 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7048 return -EOPNOTSUPP;
7049
7050 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7051
7052 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7053 if (reason_code == 0) {
7054 /* Reason Code 0 is reserved */
7055 return -EINVAL;
7056 }
7057
7058 if (info->attrs[NL80211_ATTR_IE]) {
7059 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7060 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7061 }
7062
7063 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7064
7065 wdev_lock(dev->ieee80211_ptr);
7066 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7067 local_state_change);
7068 wdev_unlock(dev->ieee80211_ptr);
7069 return err;
7070 }
7071
7072 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7073 {
7074 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7075 struct net_device *dev = info->user_ptr[1];
7076 const u8 *ie = NULL, *bssid;
7077 int ie_len = 0, err;
7078 u16 reason_code;
7079 bool local_state_change;
7080
7081 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7082 return -EINVAL;
7083
7084 if (!info->attrs[NL80211_ATTR_MAC])
7085 return -EINVAL;
7086
7087 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7088 return -EINVAL;
7089
7090 if (!rdev->ops->disassoc)
7091 return -EOPNOTSUPP;
7092
7093 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7094 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7095 return -EOPNOTSUPP;
7096
7097 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7098
7099 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7100 if (reason_code == 0) {
7101 /* Reason Code 0 is reserved */
7102 return -EINVAL;
7103 }
7104
7105 if (info->attrs[NL80211_ATTR_IE]) {
7106 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7107 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7108 }
7109
7110 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7111
7112 wdev_lock(dev->ieee80211_ptr);
7113 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7114 local_state_change);
7115 wdev_unlock(dev->ieee80211_ptr);
7116 return err;
7117 }
7118
7119 static bool
7120 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7121 int mcast_rate[IEEE80211_NUM_BANDS],
7122 int rateval)
7123 {
7124 struct wiphy *wiphy = &rdev->wiphy;
7125 bool found = false;
7126 int band, i;
7127
7128 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7129 struct ieee80211_supported_band *sband;
7130
7131 sband = wiphy->bands[band];
7132 if (!sband)
7133 continue;
7134
7135 for (i = 0; i < sband->n_bitrates; i++) {
7136 if (sband->bitrates[i].bitrate == rateval) {
7137 mcast_rate[band] = i + 1;
7138 found = true;
7139 break;
7140 }
7141 }
7142 }
7143
7144 return found;
7145 }
7146
7147 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7148 {
7149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7150 struct net_device *dev = info->user_ptr[1];
7151 struct cfg80211_ibss_params ibss;
7152 struct wiphy *wiphy;
7153 struct cfg80211_cached_keys *connkeys = NULL;
7154 int err;
7155
7156 memset(&ibss, 0, sizeof(ibss));
7157
7158 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7159 return -EINVAL;
7160
7161 if (!info->attrs[NL80211_ATTR_SSID] ||
7162 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7163 return -EINVAL;
7164
7165 ibss.beacon_interval = 100;
7166
7167 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7168 ibss.beacon_interval =
7169 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7170 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7171 return -EINVAL;
7172 }
7173
7174 if (!rdev->ops->join_ibss)
7175 return -EOPNOTSUPP;
7176
7177 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7178 return -EOPNOTSUPP;
7179
7180 wiphy = &rdev->wiphy;
7181
7182 if (info->attrs[NL80211_ATTR_MAC]) {
7183 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7184
7185 if (!is_valid_ether_addr(ibss.bssid))
7186 return -EINVAL;
7187 }
7188 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7189 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7190
7191 if (info->attrs[NL80211_ATTR_IE]) {
7192 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7193 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7194 }
7195
7196 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7197 if (err)
7198 return err;
7199
7200 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7201 NL80211_IFTYPE_ADHOC))
7202 return -EINVAL;
7203
7204 switch (ibss.chandef.width) {
7205 case NL80211_CHAN_WIDTH_5:
7206 case NL80211_CHAN_WIDTH_10:
7207 case NL80211_CHAN_WIDTH_20_NOHT:
7208 break;
7209 case NL80211_CHAN_WIDTH_20:
7210 case NL80211_CHAN_WIDTH_40:
7211 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7212 break;
7213 default:
7214 return -EINVAL;
7215 }
7216
7217 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7218 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7219
7220 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7221 u8 *rates =
7222 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7223 int n_rates =
7224 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7225 struct ieee80211_supported_band *sband =
7226 wiphy->bands[ibss.chandef.chan->band];
7227
7228 err = ieee80211_get_ratemask(sband, rates, n_rates,
7229 &ibss.basic_rates);
7230 if (err)
7231 return err;
7232 }
7233
7234 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7235 memcpy(&ibss.ht_capa_mask,
7236 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7237 sizeof(ibss.ht_capa_mask));
7238
7239 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7240 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7241 return -EINVAL;
7242 memcpy(&ibss.ht_capa,
7243 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7244 sizeof(ibss.ht_capa));
7245 }
7246
7247 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7248 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7249 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7250 return -EINVAL;
7251
7252 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7253 bool no_ht = false;
7254
7255 connkeys = nl80211_parse_connkeys(rdev,
7256 info->attrs[NL80211_ATTR_KEYS],
7257 &no_ht);
7258 if (IS_ERR(connkeys))
7259 return PTR_ERR(connkeys);
7260
7261 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7262 no_ht) {
7263 kfree(connkeys);
7264 return -EINVAL;
7265 }
7266 }
7267
7268 ibss.control_port =
7269 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7270
7271 ibss.userspace_handles_dfs =
7272 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7273
7274 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7275 if (err)
7276 kzfree(connkeys);
7277 return err;
7278 }
7279
7280 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7281 {
7282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7283 struct net_device *dev = info->user_ptr[1];
7284
7285 if (!rdev->ops->leave_ibss)
7286 return -EOPNOTSUPP;
7287
7288 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7289 return -EOPNOTSUPP;
7290
7291 return cfg80211_leave_ibss(rdev, dev, false);
7292 }
7293
7294 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7295 {
7296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7297 struct net_device *dev = info->user_ptr[1];
7298 int mcast_rate[IEEE80211_NUM_BANDS];
7299 u32 nla_rate;
7300 int err;
7301
7302 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7303 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7304 return -EOPNOTSUPP;
7305
7306 if (!rdev->ops->set_mcast_rate)
7307 return -EOPNOTSUPP;
7308
7309 memset(mcast_rate, 0, sizeof(mcast_rate));
7310
7311 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7312 return -EINVAL;
7313
7314 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7315 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7316 return -EINVAL;
7317
7318 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7319
7320 return err;
7321 }
7322
7323 static struct sk_buff *
7324 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7325 int approxlen, u32 portid, u32 seq,
7326 enum nl80211_commands cmd,
7327 enum nl80211_attrs attr,
7328 const struct nl80211_vendor_cmd_info *info,
7329 gfp_t gfp)
7330 {
7331 struct sk_buff *skb;
7332 void *hdr;
7333 struct nlattr *data;
7334
7335 skb = nlmsg_new(approxlen + 100, gfp);
7336 if (!skb)
7337 return NULL;
7338
7339 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7340 if (!hdr) {
7341 kfree_skb(skb);
7342 return NULL;
7343 }
7344
7345 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7346 goto nla_put_failure;
7347
7348 if (info) {
7349 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7350 info->vendor_id))
7351 goto nla_put_failure;
7352 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7353 info->subcmd))
7354 goto nla_put_failure;
7355 }
7356
7357 data = nla_nest_start(skb, attr);
7358
7359 ((void **)skb->cb)[0] = rdev;
7360 ((void **)skb->cb)[1] = hdr;
7361 ((void **)skb->cb)[2] = data;
7362
7363 return skb;
7364
7365 nla_put_failure:
7366 kfree_skb(skb);
7367 return NULL;
7368 }
7369
7370 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7371 enum nl80211_commands cmd,
7372 enum nl80211_attrs attr,
7373 int vendor_event_idx,
7374 int approxlen, gfp_t gfp)
7375 {
7376 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7377 const struct nl80211_vendor_cmd_info *info;
7378
7379 switch (cmd) {
7380 case NL80211_CMD_TESTMODE:
7381 if (WARN_ON(vendor_event_idx != -1))
7382 return NULL;
7383 info = NULL;
7384 break;
7385 case NL80211_CMD_VENDOR:
7386 if (WARN_ON(vendor_event_idx < 0 ||
7387 vendor_event_idx >= wiphy->n_vendor_events))
7388 return NULL;
7389 info = &wiphy->vendor_events[vendor_event_idx];
7390 break;
7391 default:
7392 WARN_ON(1);
7393 return NULL;
7394 }
7395
7396 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7397 cmd, attr, info, gfp);
7398 }
7399 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7400
7401 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7402 {
7403 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7404 void *hdr = ((void **)skb->cb)[1];
7405 struct nlattr *data = ((void **)skb->cb)[2];
7406 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7407
7408 /* clear CB data for netlink core to own from now on */
7409 memset(skb->cb, 0, sizeof(skb->cb));
7410
7411 nla_nest_end(skb, data);
7412 genlmsg_end(skb, hdr);
7413
7414 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7415 mcgrp = NL80211_MCGRP_VENDOR;
7416
7417 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7418 mcgrp, gfp);
7419 }
7420 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7421
7422 #ifdef CONFIG_NL80211_TESTMODE
7423 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7424 {
7425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7426 struct wireless_dev *wdev =
7427 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7428 int err;
7429
7430 if (!rdev->ops->testmode_cmd)
7431 return -EOPNOTSUPP;
7432
7433 if (IS_ERR(wdev)) {
7434 err = PTR_ERR(wdev);
7435 if (err != -EINVAL)
7436 return err;
7437 wdev = NULL;
7438 } else if (wdev->wiphy != &rdev->wiphy) {
7439 return -EINVAL;
7440 }
7441
7442 if (!info->attrs[NL80211_ATTR_TESTDATA])
7443 return -EINVAL;
7444
7445 rdev->cur_cmd_info = info;
7446 err = rdev_testmode_cmd(rdev, wdev,
7447 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7448 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7449 rdev->cur_cmd_info = NULL;
7450
7451 return err;
7452 }
7453
7454 static int nl80211_testmode_dump(struct sk_buff *skb,
7455 struct netlink_callback *cb)
7456 {
7457 struct cfg80211_registered_device *rdev;
7458 int err;
7459 long phy_idx;
7460 void *data = NULL;
7461 int data_len = 0;
7462
7463 rtnl_lock();
7464
7465 if (cb->args[0]) {
7466 /*
7467 * 0 is a valid index, but not valid for args[0],
7468 * so we need to offset by 1.
7469 */
7470 phy_idx = cb->args[0] - 1;
7471 } else {
7472 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7473 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7474 nl80211_policy);
7475 if (err)
7476 goto out_err;
7477
7478 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7479 nl80211_fam.attrbuf);
7480 if (IS_ERR(rdev)) {
7481 err = PTR_ERR(rdev);
7482 goto out_err;
7483 }
7484 phy_idx = rdev->wiphy_idx;
7485 rdev = NULL;
7486
7487 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7488 cb->args[1] =
7489 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7490 }
7491
7492 if (cb->args[1]) {
7493 data = nla_data((void *)cb->args[1]);
7494 data_len = nla_len((void *)cb->args[1]);
7495 }
7496
7497 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7498 if (!rdev) {
7499 err = -ENOENT;
7500 goto out_err;
7501 }
7502
7503 if (!rdev->ops->testmode_dump) {
7504 err = -EOPNOTSUPP;
7505 goto out_err;
7506 }
7507
7508 while (1) {
7509 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7510 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7511 NL80211_CMD_TESTMODE);
7512 struct nlattr *tmdata;
7513
7514 if (!hdr)
7515 break;
7516
7517 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7518 genlmsg_cancel(skb, hdr);
7519 break;
7520 }
7521
7522 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7523 if (!tmdata) {
7524 genlmsg_cancel(skb, hdr);
7525 break;
7526 }
7527 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7528 nla_nest_end(skb, tmdata);
7529
7530 if (err == -ENOBUFS || err == -ENOENT) {
7531 genlmsg_cancel(skb, hdr);
7532 break;
7533 } else if (err) {
7534 genlmsg_cancel(skb, hdr);
7535 goto out_err;
7536 }
7537
7538 genlmsg_end(skb, hdr);
7539 }
7540
7541 err = skb->len;
7542 /* see above */
7543 cb->args[0] = phy_idx + 1;
7544 out_err:
7545 rtnl_unlock();
7546 return err;
7547 }
7548 #endif
7549
7550 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7551 {
7552 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7553 struct net_device *dev = info->user_ptr[1];
7554 struct cfg80211_connect_params connect;
7555 struct wiphy *wiphy;
7556 struct cfg80211_cached_keys *connkeys = NULL;
7557 int err;
7558
7559 memset(&connect, 0, sizeof(connect));
7560
7561 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7562 return -EINVAL;
7563
7564 if (!info->attrs[NL80211_ATTR_SSID] ||
7565 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7566 return -EINVAL;
7567
7568 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7569 connect.auth_type =
7570 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7571 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7572 NL80211_CMD_CONNECT))
7573 return -EINVAL;
7574 } else
7575 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7576
7577 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7578
7579 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7580 NL80211_MAX_NR_CIPHER_SUITES);
7581 if (err)
7582 return err;
7583
7584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7586 return -EOPNOTSUPP;
7587
7588 wiphy = &rdev->wiphy;
7589
7590 connect.bg_scan_period = -1;
7591 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7592 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7593 connect.bg_scan_period =
7594 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7595 }
7596
7597 if (info->attrs[NL80211_ATTR_MAC])
7598 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7599 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7600 connect.bssid_hint =
7601 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7602 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7603 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7604
7605 if (info->attrs[NL80211_ATTR_IE]) {
7606 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7607 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7608 }
7609
7610 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7611 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7612 if (connect.mfp != NL80211_MFP_REQUIRED &&
7613 connect.mfp != NL80211_MFP_NO)
7614 return -EINVAL;
7615 } else {
7616 connect.mfp = NL80211_MFP_NO;
7617 }
7618
7619 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7620 connect.channel = nl80211_get_valid_chan(
7621 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7622 if (!connect.channel)
7623 return -EINVAL;
7624 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7625 connect.channel_hint = nl80211_get_valid_chan(
7626 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7627 if (!connect.channel_hint)
7628 return -EINVAL;
7629 }
7630
7631 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7632 connkeys = nl80211_parse_connkeys(rdev,
7633 info->attrs[NL80211_ATTR_KEYS], NULL);
7634 if (IS_ERR(connkeys))
7635 return PTR_ERR(connkeys);
7636 }
7637
7638 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7639 connect.flags |= ASSOC_REQ_DISABLE_HT;
7640
7641 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7642 memcpy(&connect.ht_capa_mask,
7643 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7644 sizeof(connect.ht_capa_mask));
7645
7646 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7647 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7648 kzfree(connkeys);
7649 return -EINVAL;
7650 }
7651 memcpy(&connect.ht_capa,
7652 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7653 sizeof(connect.ht_capa));
7654 }
7655
7656 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7657 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7658
7659 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7660 memcpy(&connect.vht_capa_mask,
7661 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7662 sizeof(connect.vht_capa_mask));
7663
7664 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7665 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7666 kzfree(connkeys);
7667 return -EINVAL;
7668 }
7669 memcpy(&connect.vht_capa,
7670 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7671 sizeof(connect.vht_capa));
7672 }
7673
7674 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7675 if (!(rdev->wiphy.features &
7676 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7677 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7678 return -EINVAL;
7679 connect.flags |= ASSOC_REQ_USE_RRM;
7680 }
7681
7682 wdev_lock(dev->ieee80211_ptr);
7683 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7684 wdev_unlock(dev->ieee80211_ptr);
7685 if (err)
7686 kzfree(connkeys);
7687 return err;
7688 }
7689
7690 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7691 {
7692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7693 struct net_device *dev = info->user_ptr[1];
7694 u16 reason;
7695 int ret;
7696
7697 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7698 reason = WLAN_REASON_DEAUTH_LEAVING;
7699 else
7700 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7701
7702 if (reason == 0)
7703 return -EINVAL;
7704
7705 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7706 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7707 return -EOPNOTSUPP;
7708
7709 wdev_lock(dev->ieee80211_ptr);
7710 ret = cfg80211_disconnect(rdev, dev, reason, true);
7711 wdev_unlock(dev->ieee80211_ptr);
7712 return ret;
7713 }
7714
7715 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7716 {
7717 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7718 struct net *net;
7719 int err;
7720 u32 pid;
7721
7722 if (!info->attrs[NL80211_ATTR_PID])
7723 return -EINVAL;
7724
7725 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7726
7727 net = get_net_ns_by_pid(pid);
7728 if (IS_ERR(net))
7729 return PTR_ERR(net);
7730
7731 err = 0;
7732
7733 /* check if anything to do */
7734 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7735 err = cfg80211_switch_netns(rdev, net);
7736
7737 put_net(net);
7738 return err;
7739 }
7740
7741 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7742 {
7743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7744 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7745 struct cfg80211_pmksa *pmksa) = NULL;
7746 struct net_device *dev = info->user_ptr[1];
7747 struct cfg80211_pmksa pmksa;
7748
7749 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7750
7751 if (!info->attrs[NL80211_ATTR_MAC])
7752 return -EINVAL;
7753
7754 if (!info->attrs[NL80211_ATTR_PMKID])
7755 return -EINVAL;
7756
7757 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7758 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7759
7760 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7761 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7762 return -EOPNOTSUPP;
7763
7764 switch (info->genlhdr->cmd) {
7765 case NL80211_CMD_SET_PMKSA:
7766 rdev_ops = rdev->ops->set_pmksa;
7767 break;
7768 case NL80211_CMD_DEL_PMKSA:
7769 rdev_ops = rdev->ops->del_pmksa;
7770 break;
7771 default:
7772 WARN_ON(1);
7773 break;
7774 }
7775
7776 if (!rdev_ops)
7777 return -EOPNOTSUPP;
7778
7779 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7780 }
7781
7782 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7783 {
7784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7785 struct net_device *dev = info->user_ptr[1];
7786
7787 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7788 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7789 return -EOPNOTSUPP;
7790
7791 if (!rdev->ops->flush_pmksa)
7792 return -EOPNOTSUPP;
7793
7794 return rdev_flush_pmksa(rdev, dev);
7795 }
7796
7797 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7798 {
7799 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7800 struct net_device *dev = info->user_ptr[1];
7801 u8 action_code, dialog_token;
7802 u32 peer_capability = 0;
7803 u16 status_code;
7804 u8 *peer;
7805 bool initiator;
7806
7807 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7808 !rdev->ops->tdls_mgmt)
7809 return -EOPNOTSUPP;
7810
7811 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7812 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7813 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7814 !info->attrs[NL80211_ATTR_IE] ||
7815 !info->attrs[NL80211_ATTR_MAC])
7816 return -EINVAL;
7817
7818 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7819 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7820 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7821 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7822 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7823 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7824 peer_capability =
7825 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7826
7827 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7828 dialog_token, status_code, peer_capability,
7829 initiator,
7830 nla_data(info->attrs[NL80211_ATTR_IE]),
7831 nla_len(info->attrs[NL80211_ATTR_IE]));
7832 }
7833
7834 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7835 {
7836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7837 struct net_device *dev = info->user_ptr[1];
7838 enum nl80211_tdls_operation operation;
7839 u8 *peer;
7840
7841 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7842 !rdev->ops->tdls_oper)
7843 return -EOPNOTSUPP;
7844
7845 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7846 !info->attrs[NL80211_ATTR_MAC])
7847 return -EINVAL;
7848
7849 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7850 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7851
7852 return rdev_tdls_oper(rdev, dev, peer, operation);
7853 }
7854
7855 static int nl80211_remain_on_channel(struct sk_buff *skb,
7856 struct genl_info *info)
7857 {
7858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7859 struct wireless_dev *wdev = info->user_ptr[1];
7860 struct cfg80211_chan_def chandef;
7861 struct sk_buff *msg;
7862 void *hdr;
7863 u64 cookie;
7864 u32 duration;
7865 int err;
7866
7867 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7868 !info->attrs[NL80211_ATTR_DURATION])
7869 return -EINVAL;
7870
7871 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7872
7873 if (!rdev->ops->remain_on_channel ||
7874 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7875 return -EOPNOTSUPP;
7876
7877 /*
7878 * We should be on that channel for at least a minimum amount of
7879 * time (10ms) but no longer than the driver supports.
7880 */
7881 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7882 duration > rdev->wiphy.max_remain_on_channel_duration)
7883 return -EINVAL;
7884
7885 err = nl80211_parse_chandef(rdev, info, &chandef);
7886 if (err)
7887 return err;
7888
7889 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7890 if (!msg)
7891 return -ENOMEM;
7892
7893 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7894 NL80211_CMD_REMAIN_ON_CHANNEL);
7895 if (!hdr) {
7896 err = -ENOBUFS;
7897 goto free_msg;
7898 }
7899
7900 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7901 duration, &cookie);
7902
7903 if (err)
7904 goto free_msg;
7905
7906 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7907 goto nla_put_failure;
7908
7909 genlmsg_end(msg, hdr);
7910
7911 return genlmsg_reply(msg, info);
7912
7913 nla_put_failure:
7914 err = -ENOBUFS;
7915 free_msg:
7916 nlmsg_free(msg);
7917 return err;
7918 }
7919
7920 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7921 struct genl_info *info)
7922 {
7923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7924 struct wireless_dev *wdev = info->user_ptr[1];
7925 u64 cookie;
7926
7927 if (!info->attrs[NL80211_ATTR_COOKIE])
7928 return -EINVAL;
7929
7930 if (!rdev->ops->cancel_remain_on_channel)
7931 return -EOPNOTSUPP;
7932
7933 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7934
7935 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7936 }
7937
7938 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7939 u8 *rates, u8 rates_len)
7940 {
7941 u8 i;
7942 u32 mask = 0;
7943
7944 for (i = 0; i < rates_len; i++) {
7945 int rate = (rates[i] & 0x7f) * 5;
7946 int ridx;
7947 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7948 struct ieee80211_rate *srate =
7949 &sband->bitrates[ridx];
7950 if (rate == srate->bitrate) {
7951 mask |= 1 << ridx;
7952 break;
7953 }
7954 }
7955 if (ridx == sband->n_bitrates)
7956 return 0; /* rate not found */
7957 }
7958
7959 return mask;
7960 }
7961
7962 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7963 u8 *rates, u8 rates_len,
7964 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7965 {
7966 u8 i;
7967
7968 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7969
7970 for (i = 0; i < rates_len; i++) {
7971 int ridx, rbit;
7972
7973 ridx = rates[i] / 8;
7974 rbit = BIT(rates[i] % 8);
7975
7976 /* check validity */
7977 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7978 return false;
7979
7980 /* check availability */
7981 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7982 mcs[ridx] |= rbit;
7983 else
7984 return false;
7985 }
7986
7987 return true;
7988 }
7989
7990 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7991 {
7992 u16 mcs_mask = 0;
7993
7994 switch (vht_mcs_map) {
7995 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7996 break;
7997 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7998 mcs_mask = 0x00FF;
7999 break;
8000 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8001 mcs_mask = 0x01FF;
8002 break;
8003 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8004 mcs_mask = 0x03FF;
8005 break;
8006 default:
8007 break;
8008 }
8009
8010 return mcs_mask;
8011 }
8012
8013 static void vht_build_mcs_mask(u16 vht_mcs_map,
8014 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8015 {
8016 u8 nss;
8017
8018 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8019 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8020 vht_mcs_map >>= 2;
8021 }
8022 }
8023
8024 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8025 struct nl80211_txrate_vht *txrate,
8026 u16 mcs[NL80211_VHT_NSS_MAX])
8027 {
8028 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8029 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8030 u8 i;
8031
8032 if (!sband->vht_cap.vht_supported)
8033 return false;
8034
8035 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8036
8037 /* Build vht_mcs_mask from VHT capabilities */
8038 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8039
8040 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8041 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8042 mcs[i] = txrate->mcs[i];
8043 else
8044 return false;
8045 }
8046
8047 return true;
8048 }
8049
8050 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8051 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8052 .len = NL80211_MAX_SUPP_RATES },
8053 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8054 .len = NL80211_MAX_SUPP_HT_RATES },
8055 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8056 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8057 };
8058
8059 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8060 struct genl_info *info)
8061 {
8062 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8064 struct cfg80211_bitrate_mask mask;
8065 int rem, i;
8066 struct net_device *dev = info->user_ptr[1];
8067 struct nlattr *tx_rates;
8068 struct ieee80211_supported_band *sband;
8069 u16 vht_tx_mcs_map;
8070
8071 if (!rdev->ops->set_bitrate_mask)
8072 return -EOPNOTSUPP;
8073
8074 memset(&mask, 0, sizeof(mask));
8075 /* Default to all rates enabled */
8076 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8077 sband = rdev->wiphy.bands[i];
8078
8079 if (!sband)
8080 continue;
8081
8082 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8083 memcpy(mask.control[i].ht_mcs,
8084 sband->ht_cap.mcs.rx_mask,
8085 sizeof(mask.control[i].ht_mcs));
8086
8087 if (!sband->vht_cap.vht_supported)
8088 continue;
8089
8090 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8091 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8092 }
8093
8094 /* if no rates are given set it back to the defaults */
8095 if (!info->attrs[NL80211_ATTR_TX_RATES])
8096 goto out;
8097
8098 /*
8099 * The nested attribute uses enum nl80211_band as the index. This maps
8100 * directly to the enum ieee80211_band values used in cfg80211.
8101 */
8102 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8103 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8104 enum ieee80211_band band = nla_type(tx_rates);
8105 int err;
8106
8107 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8108 return -EINVAL;
8109 sband = rdev->wiphy.bands[band];
8110 if (sband == NULL)
8111 return -EINVAL;
8112 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8113 nla_len(tx_rates), nl80211_txattr_policy);
8114 if (err)
8115 return err;
8116 if (tb[NL80211_TXRATE_LEGACY]) {
8117 mask.control[band].legacy = rateset_to_mask(
8118 sband,
8119 nla_data(tb[NL80211_TXRATE_LEGACY]),
8120 nla_len(tb[NL80211_TXRATE_LEGACY]));
8121 if ((mask.control[band].legacy == 0) &&
8122 nla_len(tb[NL80211_TXRATE_LEGACY]))
8123 return -EINVAL;
8124 }
8125 if (tb[NL80211_TXRATE_HT]) {
8126 if (!ht_rateset_to_mask(
8127 sband,
8128 nla_data(tb[NL80211_TXRATE_HT]),
8129 nla_len(tb[NL80211_TXRATE_HT]),
8130 mask.control[band].ht_mcs))
8131 return -EINVAL;
8132 }
8133 if (tb[NL80211_TXRATE_VHT]) {
8134 if (!vht_set_mcs_mask(
8135 sband,
8136 nla_data(tb[NL80211_TXRATE_VHT]),
8137 mask.control[band].vht_mcs))
8138 return -EINVAL;
8139 }
8140 if (tb[NL80211_TXRATE_GI]) {
8141 mask.control[band].gi =
8142 nla_get_u8(tb[NL80211_TXRATE_GI]);
8143 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8144 return -EINVAL;
8145 }
8146
8147 if (mask.control[band].legacy == 0) {
8148 /* don't allow empty legacy rates if HT or VHT
8149 * are not even supported.
8150 */
8151 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8152 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8153 return -EINVAL;
8154
8155 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8156 if (mask.control[band].ht_mcs[i])
8157 goto out;
8158
8159 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8160 if (mask.control[band].vht_mcs[i])
8161 goto out;
8162
8163 /* legacy and mcs rates may not be both empty */
8164 return -EINVAL;
8165 }
8166 }
8167
8168 out:
8169 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8170 }
8171
8172 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8173 {
8174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8175 struct wireless_dev *wdev = info->user_ptr[1];
8176 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8177
8178 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8179 return -EINVAL;
8180
8181 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8182 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8183
8184 switch (wdev->iftype) {
8185 case NL80211_IFTYPE_STATION:
8186 case NL80211_IFTYPE_ADHOC:
8187 case NL80211_IFTYPE_P2P_CLIENT:
8188 case NL80211_IFTYPE_AP:
8189 case NL80211_IFTYPE_AP_VLAN:
8190 case NL80211_IFTYPE_MESH_POINT:
8191 case NL80211_IFTYPE_P2P_GO:
8192 case NL80211_IFTYPE_P2P_DEVICE:
8193 break;
8194 default:
8195 return -EOPNOTSUPP;
8196 }
8197
8198 /* not much point in registering if we can't reply */
8199 if (!rdev->ops->mgmt_tx)
8200 return -EOPNOTSUPP;
8201
8202 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8203 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8204 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8205 }
8206
8207 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8208 {
8209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8210 struct wireless_dev *wdev = info->user_ptr[1];
8211 struct cfg80211_chan_def chandef;
8212 int err;
8213 void *hdr = NULL;
8214 u64 cookie;
8215 struct sk_buff *msg = NULL;
8216 struct cfg80211_mgmt_tx_params params = {
8217 .dont_wait_for_ack =
8218 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8219 };
8220
8221 if (!info->attrs[NL80211_ATTR_FRAME])
8222 return -EINVAL;
8223
8224 if (!rdev->ops->mgmt_tx)
8225 return -EOPNOTSUPP;
8226
8227 switch (wdev->iftype) {
8228 case NL80211_IFTYPE_P2P_DEVICE:
8229 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8230 return -EINVAL;
8231 case NL80211_IFTYPE_STATION:
8232 case NL80211_IFTYPE_ADHOC:
8233 case NL80211_IFTYPE_P2P_CLIENT:
8234 case NL80211_IFTYPE_AP:
8235 case NL80211_IFTYPE_AP_VLAN:
8236 case NL80211_IFTYPE_MESH_POINT:
8237 case NL80211_IFTYPE_P2P_GO:
8238 break;
8239 default:
8240 return -EOPNOTSUPP;
8241 }
8242
8243 if (info->attrs[NL80211_ATTR_DURATION]) {
8244 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8245 return -EINVAL;
8246 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8247
8248 /*
8249 * We should wait on the channel for at least a minimum amount
8250 * of time (10ms) but no longer than the driver supports.
8251 */
8252 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8253 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8254 return -EINVAL;
8255
8256 }
8257
8258 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8259
8260 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8261 return -EINVAL;
8262
8263 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8264
8265 /* get the channel if any has been specified, otherwise pass NULL to
8266 * the driver. The latter will use the current one
8267 */
8268 chandef.chan = NULL;
8269 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8270 err = nl80211_parse_chandef(rdev, info, &chandef);
8271 if (err)
8272 return err;
8273 }
8274
8275 if (!chandef.chan && params.offchan)
8276 return -EINVAL;
8277
8278 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8279 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8280
8281 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8282 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8283 int i;
8284
8285 if (len % sizeof(u16))
8286 return -EINVAL;
8287
8288 params.n_csa_offsets = len / sizeof(u16);
8289 params.csa_offsets =
8290 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8291
8292 /* check that all the offsets fit the frame */
8293 for (i = 0; i < params.n_csa_offsets; i++) {
8294 if (params.csa_offsets[i] >= params.len)
8295 return -EINVAL;
8296 }
8297 }
8298
8299 if (!params.dont_wait_for_ack) {
8300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8301 if (!msg)
8302 return -ENOMEM;
8303
8304 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8305 NL80211_CMD_FRAME);
8306 if (!hdr) {
8307 err = -ENOBUFS;
8308 goto free_msg;
8309 }
8310 }
8311
8312 params.chan = chandef.chan;
8313 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8314 if (err)
8315 goto free_msg;
8316
8317 if (msg) {
8318 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8319 goto nla_put_failure;
8320
8321 genlmsg_end(msg, hdr);
8322 return genlmsg_reply(msg, info);
8323 }
8324
8325 return 0;
8326
8327 nla_put_failure:
8328 err = -ENOBUFS;
8329 free_msg:
8330 nlmsg_free(msg);
8331 return err;
8332 }
8333
8334 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8335 {
8336 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8337 struct wireless_dev *wdev = info->user_ptr[1];
8338 u64 cookie;
8339
8340 if (!info->attrs[NL80211_ATTR_COOKIE])
8341 return -EINVAL;
8342
8343 if (!rdev->ops->mgmt_tx_cancel_wait)
8344 return -EOPNOTSUPP;
8345
8346 switch (wdev->iftype) {
8347 case NL80211_IFTYPE_STATION:
8348 case NL80211_IFTYPE_ADHOC:
8349 case NL80211_IFTYPE_P2P_CLIENT:
8350 case NL80211_IFTYPE_AP:
8351 case NL80211_IFTYPE_AP_VLAN:
8352 case NL80211_IFTYPE_P2P_GO:
8353 case NL80211_IFTYPE_P2P_DEVICE:
8354 break;
8355 default:
8356 return -EOPNOTSUPP;
8357 }
8358
8359 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8360
8361 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8362 }
8363
8364 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8365 {
8366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8367 struct wireless_dev *wdev;
8368 struct net_device *dev = info->user_ptr[1];
8369 u8 ps_state;
8370 bool state;
8371 int err;
8372
8373 if (!info->attrs[NL80211_ATTR_PS_STATE])
8374 return -EINVAL;
8375
8376 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8377
8378 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8379 return -EINVAL;
8380
8381 wdev = dev->ieee80211_ptr;
8382
8383 if (!rdev->ops->set_power_mgmt)
8384 return -EOPNOTSUPP;
8385
8386 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8387
8388 if (state == wdev->ps)
8389 return 0;
8390
8391 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8392 if (!err)
8393 wdev->ps = state;
8394 return err;
8395 }
8396
8397 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8398 {
8399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8400 enum nl80211_ps_state ps_state;
8401 struct wireless_dev *wdev;
8402 struct net_device *dev = info->user_ptr[1];
8403 struct sk_buff *msg;
8404 void *hdr;
8405 int err;
8406
8407 wdev = dev->ieee80211_ptr;
8408
8409 if (!rdev->ops->set_power_mgmt)
8410 return -EOPNOTSUPP;
8411
8412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8413 if (!msg)
8414 return -ENOMEM;
8415
8416 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8417 NL80211_CMD_GET_POWER_SAVE);
8418 if (!hdr) {
8419 err = -ENOBUFS;
8420 goto free_msg;
8421 }
8422
8423 if (wdev->ps)
8424 ps_state = NL80211_PS_ENABLED;
8425 else
8426 ps_state = NL80211_PS_DISABLED;
8427
8428 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8429 goto nla_put_failure;
8430
8431 genlmsg_end(msg, hdr);
8432 return genlmsg_reply(msg, info);
8433
8434 nla_put_failure:
8435 err = -ENOBUFS;
8436 free_msg:
8437 nlmsg_free(msg);
8438 return err;
8439 }
8440
8441 static const struct nla_policy
8442 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8443 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8444 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8445 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8446 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8447 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8448 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8449 };
8450
8451 static int nl80211_set_cqm_txe(struct genl_info *info,
8452 u32 rate, u32 pkts, u32 intvl)
8453 {
8454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8455 struct net_device *dev = info->user_ptr[1];
8456 struct wireless_dev *wdev = dev->ieee80211_ptr;
8457
8458 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8459 return -EINVAL;
8460
8461 if (!rdev->ops->set_cqm_txe_config)
8462 return -EOPNOTSUPP;
8463
8464 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8465 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8466 return -EOPNOTSUPP;
8467
8468 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8469 }
8470
8471 static int nl80211_set_cqm_rssi(struct genl_info *info,
8472 s32 threshold, u32 hysteresis)
8473 {
8474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8475 struct net_device *dev = info->user_ptr[1];
8476 struct wireless_dev *wdev = dev->ieee80211_ptr;
8477
8478 if (threshold > 0)
8479 return -EINVAL;
8480
8481 /* disabling - hysteresis should also be zero then */
8482 if (threshold == 0)
8483 hysteresis = 0;
8484
8485 if (!rdev->ops->set_cqm_rssi_config)
8486 return -EOPNOTSUPP;
8487
8488 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8489 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8490 return -EOPNOTSUPP;
8491
8492 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8493 }
8494
8495 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8496 {
8497 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8498 struct nlattr *cqm;
8499 int err;
8500
8501 cqm = info->attrs[NL80211_ATTR_CQM];
8502 if (!cqm)
8503 return -EINVAL;
8504
8505 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8506 nl80211_attr_cqm_policy);
8507 if (err)
8508 return err;
8509
8510 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8511 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8512 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8513 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8514
8515 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8516 }
8517
8518 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8519 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8520 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8521 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8522 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8523 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8524
8525 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8526 }
8527
8528 return -EINVAL;
8529 }
8530
8531 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8532 {
8533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8534 struct net_device *dev = info->user_ptr[1];
8535 struct ocb_setup setup = {};
8536 int err;
8537
8538 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8539 if (err)
8540 return err;
8541
8542 return cfg80211_join_ocb(rdev, dev, &setup);
8543 }
8544
8545 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8546 {
8547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8548 struct net_device *dev = info->user_ptr[1];
8549
8550 return cfg80211_leave_ocb(rdev, dev);
8551 }
8552
8553 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8554 {
8555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8556 struct net_device *dev = info->user_ptr[1];
8557 struct mesh_config cfg;
8558 struct mesh_setup setup;
8559 int err;
8560
8561 /* start with default */
8562 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8563 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8564
8565 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8566 /* and parse parameters if given */
8567 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8568 if (err)
8569 return err;
8570 }
8571
8572 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8573 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8574 return -EINVAL;
8575
8576 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8577 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8578
8579 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8580 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8581 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8582 return -EINVAL;
8583
8584 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8585 setup.beacon_interval =
8586 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8587 if (setup.beacon_interval < 10 ||
8588 setup.beacon_interval > 10000)
8589 return -EINVAL;
8590 }
8591
8592 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8593 setup.dtim_period =
8594 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8595 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8596 return -EINVAL;
8597 }
8598
8599 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8600 /* parse additional setup parameters if given */
8601 err = nl80211_parse_mesh_setup(info, &setup);
8602 if (err)
8603 return err;
8604 }
8605
8606 if (setup.user_mpm)
8607 cfg.auto_open_plinks = false;
8608
8609 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8610 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8611 if (err)
8612 return err;
8613 } else {
8614 /* cfg80211_join_mesh() will sort it out */
8615 setup.chandef.chan = NULL;
8616 }
8617
8618 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8619 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8620 int n_rates =
8621 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8622 struct ieee80211_supported_band *sband;
8623
8624 if (!setup.chandef.chan)
8625 return -EINVAL;
8626
8627 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8628
8629 err = ieee80211_get_ratemask(sband, rates, n_rates,
8630 &setup.basic_rates);
8631 if (err)
8632 return err;
8633 }
8634
8635 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8636 }
8637
8638 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8639 {
8640 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8641 struct net_device *dev = info->user_ptr[1];
8642
8643 return cfg80211_leave_mesh(rdev, dev);
8644 }
8645
8646 #ifdef CONFIG_PM
8647 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8648 struct cfg80211_registered_device *rdev)
8649 {
8650 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8651 struct nlattr *nl_pats, *nl_pat;
8652 int i, pat_len;
8653
8654 if (!wowlan->n_patterns)
8655 return 0;
8656
8657 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8658 if (!nl_pats)
8659 return -ENOBUFS;
8660
8661 for (i = 0; i < wowlan->n_patterns; i++) {
8662 nl_pat = nla_nest_start(msg, i + 1);
8663 if (!nl_pat)
8664 return -ENOBUFS;
8665 pat_len = wowlan->patterns[i].pattern_len;
8666 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8667 wowlan->patterns[i].mask) ||
8668 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8669 wowlan->patterns[i].pattern) ||
8670 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8671 wowlan->patterns[i].pkt_offset))
8672 return -ENOBUFS;
8673 nla_nest_end(msg, nl_pat);
8674 }
8675 nla_nest_end(msg, nl_pats);
8676
8677 return 0;
8678 }
8679
8680 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8681 struct cfg80211_wowlan_tcp *tcp)
8682 {
8683 struct nlattr *nl_tcp;
8684
8685 if (!tcp)
8686 return 0;
8687
8688 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8689 if (!nl_tcp)
8690 return -ENOBUFS;
8691
8692 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8693 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8694 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8695 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8696 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8697 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8698 tcp->payload_len, tcp->payload) ||
8699 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8700 tcp->data_interval) ||
8701 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8702 tcp->wake_len, tcp->wake_data) ||
8703 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8704 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8705 return -ENOBUFS;
8706
8707 if (tcp->payload_seq.len &&
8708 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8709 sizeof(tcp->payload_seq), &tcp->payload_seq))
8710 return -ENOBUFS;
8711
8712 if (tcp->payload_tok.len &&
8713 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8714 sizeof(tcp->payload_tok) + tcp->tokens_size,
8715 &tcp->payload_tok))
8716 return -ENOBUFS;
8717
8718 nla_nest_end(msg, nl_tcp);
8719
8720 return 0;
8721 }
8722
8723 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8724 {
8725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8726 struct sk_buff *msg;
8727 void *hdr;
8728 u32 size = NLMSG_DEFAULT_SIZE;
8729
8730 if (!rdev->wiphy.wowlan)
8731 return -EOPNOTSUPP;
8732
8733 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8734 /* adjust size to have room for all the data */
8735 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8736 rdev->wiphy.wowlan_config->tcp->payload_len +
8737 rdev->wiphy.wowlan_config->tcp->wake_len +
8738 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8739 }
8740
8741 msg = nlmsg_new(size, GFP_KERNEL);
8742 if (!msg)
8743 return -ENOMEM;
8744
8745 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8746 NL80211_CMD_GET_WOWLAN);
8747 if (!hdr)
8748 goto nla_put_failure;
8749
8750 if (rdev->wiphy.wowlan_config) {
8751 struct nlattr *nl_wowlan;
8752
8753 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8754 if (!nl_wowlan)
8755 goto nla_put_failure;
8756
8757 if ((rdev->wiphy.wowlan_config->any &&
8758 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8759 (rdev->wiphy.wowlan_config->disconnect &&
8760 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8761 (rdev->wiphy.wowlan_config->magic_pkt &&
8762 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8763 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8764 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8765 (rdev->wiphy.wowlan_config->eap_identity_req &&
8766 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8767 (rdev->wiphy.wowlan_config->four_way_handshake &&
8768 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8769 (rdev->wiphy.wowlan_config->rfkill_release &&
8770 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8771 goto nla_put_failure;
8772
8773 if (nl80211_send_wowlan_patterns(msg, rdev))
8774 goto nla_put_failure;
8775
8776 if (nl80211_send_wowlan_tcp(msg,
8777 rdev->wiphy.wowlan_config->tcp))
8778 goto nla_put_failure;
8779
8780 nla_nest_end(msg, nl_wowlan);
8781 }
8782
8783 genlmsg_end(msg, hdr);
8784 return genlmsg_reply(msg, info);
8785
8786 nla_put_failure:
8787 nlmsg_free(msg);
8788 return -ENOBUFS;
8789 }
8790
8791 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8792 struct nlattr *attr,
8793 struct cfg80211_wowlan *trig)
8794 {
8795 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8796 struct cfg80211_wowlan_tcp *cfg;
8797 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8798 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8799 u32 size;
8800 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8801 int err, port;
8802
8803 if (!rdev->wiphy.wowlan->tcp)
8804 return -EINVAL;
8805
8806 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8807 nla_data(attr), nla_len(attr),
8808 nl80211_wowlan_tcp_policy);
8809 if (err)
8810 return err;
8811
8812 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8813 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8814 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8815 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8816 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8817 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8818 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8819 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8820 return -EINVAL;
8821
8822 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8823 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8824 return -EINVAL;
8825
8826 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8827 rdev->wiphy.wowlan->tcp->data_interval_max ||
8828 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8829 return -EINVAL;
8830
8831 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8832 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8833 return -EINVAL;
8834
8835 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8836 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8837 return -EINVAL;
8838
8839 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8840 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8841
8842 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8843 tokens_size = tokln - sizeof(*tok);
8844
8845 if (!tok->len || tokens_size % tok->len)
8846 return -EINVAL;
8847 if (!rdev->wiphy.wowlan->tcp->tok)
8848 return -EINVAL;
8849 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8850 return -EINVAL;
8851 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8852 return -EINVAL;
8853 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8854 return -EINVAL;
8855 if (tok->offset + tok->len > data_size)
8856 return -EINVAL;
8857 }
8858
8859 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8860 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8861 if (!rdev->wiphy.wowlan->tcp->seq)
8862 return -EINVAL;
8863 if (seq->len == 0 || seq->len > 4)
8864 return -EINVAL;
8865 if (seq->len + seq->offset > data_size)
8866 return -EINVAL;
8867 }
8868
8869 size = sizeof(*cfg);
8870 size += data_size;
8871 size += wake_size + wake_mask_size;
8872 size += tokens_size;
8873
8874 cfg = kzalloc(size, GFP_KERNEL);
8875 if (!cfg)
8876 return -ENOMEM;
8877 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8878 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8879 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8880 ETH_ALEN);
8881 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8882 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8883 else
8884 port = 0;
8885 #ifdef CONFIG_INET
8886 /* allocate a socket and port for it and use it */
8887 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8888 IPPROTO_TCP, &cfg->sock, 1);
8889 if (err) {
8890 kfree(cfg);
8891 return err;
8892 }
8893 if (inet_csk_get_port(cfg->sock->sk, port)) {
8894 sock_release(cfg->sock);
8895 kfree(cfg);
8896 return -EADDRINUSE;
8897 }
8898 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8899 #else
8900 if (!port) {
8901 kfree(cfg);
8902 return -EINVAL;
8903 }
8904 cfg->src_port = port;
8905 #endif
8906
8907 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8908 cfg->payload_len = data_size;
8909 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8910 memcpy((void *)cfg->payload,
8911 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8912 data_size);
8913 if (seq)
8914 cfg->payload_seq = *seq;
8915 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8916 cfg->wake_len = wake_size;
8917 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8918 memcpy((void *)cfg->wake_data,
8919 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8920 wake_size);
8921 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8922 data_size + wake_size;
8923 memcpy((void *)cfg->wake_mask,
8924 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8925 wake_mask_size);
8926 if (tok) {
8927 cfg->tokens_size = tokens_size;
8928 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8929 }
8930
8931 trig->tcp = cfg;
8932
8933 return 0;
8934 }
8935
8936 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8937 const struct wiphy_wowlan_support *wowlan,
8938 struct nlattr *attr,
8939 struct cfg80211_wowlan *trig)
8940 {
8941 struct nlattr **tb;
8942 int err;
8943
8944 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8945 if (!tb)
8946 return -ENOMEM;
8947
8948 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8949 err = -EOPNOTSUPP;
8950 goto out;
8951 }
8952
8953 err = nla_parse(tb, NL80211_ATTR_MAX,
8954 nla_data(attr), nla_len(attr),
8955 nl80211_policy);
8956 if (err)
8957 goto out;
8958
8959 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8960 err = PTR_ERR_OR_ZERO(trig->nd_config);
8961 if (err)
8962 trig->nd_config = NULL;
8963
8964 out:
8965 kfree(tb);
8966 return err;
8967 }
8968
8969 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8970 {
8971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8972 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8973 struct cfg80211_wowlan new_triggers = {};
8974 struct cfg80211_wowlan *ntrig;
8975 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8976 int err, i;
8977 bool prev_enabled = rdev->wiphy.wowlan_config;
8978
8979 if (!wowlan)
8980 return -EOPNOTSUPP;
8981
8982 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8983 cfg80211_rdev_free_wowlan(rdev);
8984 rdev->wiphy.wowlan_config = NULL;
8985 goto set_wakeup;
8986 }
8987
8988 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8989 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8990 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8991 nl80211_wowlan_policy);
8992 if (err)
8993 return err;
8994
8995 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8996 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8997 return -EINVAL;
8998 new_triggers.any = true;
8999 }
9000
9001 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9002 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9003 return -EINVAL;
9004 new_triggers.disconnect = true;
9005 }
9006
9007 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9008 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9009 return -EINVAL;
9010 new_triggers.magic_pkt = true;
9011 }
9012
9013 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9014 return -EINVAL;
9015
9016 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9017 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9018 return -EINVAL;
9019 new_triggers.gtk_rekey_failure = true;
9020 }
9021
9022 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9023 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9024 return -EINVAL;
9025 new_triggers.eap_identity_req = true;
9026 }
9027
9028 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9029 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9030 return -EINVAL;
9031 new_triggers.four_way_handshake = true;
9032 }
9033
9034 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9035 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9036 return -EINVAL;
9037 new_triggers.rfkill_release = true;
9038 }
9039
9040 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9041 struct nlattr *pat;
9042 int n_patterns = 0;
9043 int rem, pat_len, mask_len, pkt_offset;
9044 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9045
9046 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9047 rem)
9048 n_patterns++;
9049 if (n_patterns > wowlan->n_patterns)
9050 return -EINVAL;
9051
9052 new_triggers.patterns = kcalloc(n_patterns,
9053 sizeof(new_triggers.patterns[0]),
9054 GFP_KERNEL);
9055 if (!new_triggers.patterns)
9056 return -ENOMEM;
9057
9058 new_triggers.n_patterns = n_patterns;
9059 i = 0;
9060
9061 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9062 rem) {
9063 u8 *mask_pat;
9064
9065 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9066 nla_len(pat), NULL);
9067 err = -EINVAL;
9068 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9069 !pat_tb[NL80211_PKTPAT_PATTERN])
9070 goto error;
9071 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9072 mask_len = DIV_ROUND_UP(pat_len, 8);
9073 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9074 goto error;
9075 if (pat_len > wowlan->pattern_max_len ||
9076 pat_len < wowlan->pattern_min_len)
9077 goto error;
9078
9079 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9080 pkt_offset = 0;
9081 else
9082 pkt_offset = nla_get_u32(
9083 pat_tb[NL80211_PKTPAT_OFFSET]);
9084 if (pkt_offset > wowlan->max_pkt_offset)
9085 goto error;
9086 new_triggers.patterns[i].pkt_offset = pkt_offset;
9087
9088 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9089 if (!mask_pat) {
9090 err = -ENOMEM;
9091 goto error;
9092 }
9093 new_triggers.patterns[i].mask = mask_pat;
9094 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9095 mask_len);
9096 mask_pat += mask_len;
9097 new_triggers.patterns[i].pattern = mask_pat;
9098 new_triggers.patterns[i].pattern_len = pat_len;
9099 memcpy(mask_pat,
9100 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9101 pat_len);
9102 i++;
9103 }
9104 }
9105
9106 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9107 err = nl80211_parse_wowlan_tcp(
9108 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9109 &new_triggers);
9110 if (err)
9111 goto error;
9112 }
9113
9114 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9115 err = nl80211_parse_wowlan_nd(
9116 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9117 &new_triggers);
9118 if (err)
9119 goto error;
9120 }
9121
9122 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9123 if (!ntrig) {
9124 err = -ENOMEM;
9125 goto error;
9126 }
9127 cfg80211_rdev_free_wowlan(rdev);
9128 rdev->wiphy.wowlan_config = ntrig;
9129
9130 set_wakeup:
9131 if (rdev->ops->set_wakeup &&
9132 prev_enabled != !!rdev->wiphy.wowlan_config)
9133 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9134
9135 return 0;
9136 error:
9137 for (i = 0; i < new_triggers.n_patterns; i++)
9138 kfree(new_triggers.patterns[i].mask);
9139 kfree(new_triggers.patterns);
9140 if (new_triggers.tcp && new_triggers.tcp->sock)
9141 sock_release(new_triggers.tcp->sock);
9142 kfree(new_triggers.tcp);
9143 return err;
9144 }
9145 #endif
9146
9147 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9148 struct cfg80211_registered_device *rdev)
9149 {
9150 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9151 int i, j, pat_len;
9152 struct cfg80211_coalesce_rules *rule;
9153
9154 if (!rdev->coalesce->n_rules)
9155 return 0;
9156
9157 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9158 if (!nl_rules)
9159 return -ENOBUFS;
9160
9161 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9162 nl_rule = nla_nest_start(msg, i + 1);
9163 if (!nl_rule)
9164 return -ENOBUFS;
9165
9166 rule = &rdev->coalesce->rules[i];
9167 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9168 rule->delay))
9169 return -ENOBUFS;
9170
9171 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9172 rule->condition))
9173 return -ENOBUFS;
9174
9175 nl_pats = nla_nest_start(msg,
9176 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9177 if (!nl_pats)
9178 return -ENOBUFS;
9179
9180 for (j = 0; j < rule->n_patterns; j++) {
9181 nl_pat = nla_nest_start(msg, j + 1);
9182 if (!nl_pat)
9183 return -ENOBUFS;
9184 pat_len = rule->patterns[j].pattern_len;
9185 if (nla_put(msg, NL80211_PKTPAT_MASK,
9186 DIV_ROUND_UP(pat_len, 8),
9187 rule->patterns[j].mask) ||
9188 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9189 rule->patterns[j].pattern) ||
9190 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9191 rule->patterns[j].pkt_offset))
9192 return -ENOBUFS;
9193 nla_nest_end(msg, nl_pat);
9194 }
9195 nla_nest_end(msg, nl_pats);
9196 nla_nest_end(msg, nl_rule);
9197 }
9198 nla_nest_end(msg, nl_rules);
9199
9200 return 0;
9201 }
9202
9203 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9204 {
9205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9206 struct sk_buff *msg;
9207 void *hdr;
9208
9209 if (!rdev->wiphy.coalesce)
9210 return -EOPNOTSUPP;
9211
9212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9213 if (!msg)
9214 return -ENOMEM;
9215
9216 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9217 NL80211_CMD_GET_COALESCE);
9218 if (!hdr)
9219 goto nla_put_failure;
9220
9221 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9222 goto nla_put_failure;
9223
9224 genlmsg_end(msg, hdr);
9225 return genlmsg_reply(msg, info);
9226
9227 nla_put_failure:
9228 nlmsg_free(msg);
9229 return -ENOBUFS;
9230 }
9231
9232 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9233 {
9234 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9235 int i, j;
9236 struct cfg80211_coalesce_rules *rule;
9237
9238 if (!coalesce)
9239 return;
9240
9241 for (i = 0; i < coalesce->n_rules; i++) {
9242 rule = &coalesce->rules[i];
9243 for (j = 0; j < rule->n_patterns; j++)
9244 kfree(rule->patterns[j].mask);
9245 kfree(rule->patterns);
9246 }
9247 kfree(coalesce->rules);
9248 kfree(coalesce);
9249 rdev->coalesce = NULL;
9250 }
9251
9252 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9253 struct nlattr *rule,
9254 struct cfg80211_coalesce_rules *new_rule)
9255 {
9256 int err, i;
9257 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9258 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9259 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9260 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9261
9262 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9263 nla_len(rule), nl80211_coalesce_policy);
9264 if (err)
9265 return err;
9266
9267 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9268 new_rule->delay =
9269 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9270 if (new_rule->delay > coalesce->max_delay)
9271 return -EINVAL;
9272
9273 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9274 new_rule->condition =
9275 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9276 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9277 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9278 return -EINVAL;
9279
9280 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9281 return -EINVAL;
9282
9283 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9284 rem)
9285 n_patterns++;
9286 if (n_patterns > coalesce->n_patterns)
9287 return -EINVAL;
9288
9289 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9290 GFP_KERNEL);
9291 if (!new_rule->patterns)
9292 return -ENOMEM;
9293
9294 new_rule->n_patterns = n_patterns;
9295 i = 0;
9296
9297 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9298 rem) {
9299 u8 *mask_pat;
9300
9301 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9302 nla_len(pat), NULL);
9303 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9304 !pat_tb[NL80211_PKTPAT_PATTERN])
9305 return -EINVAL;
9306 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9307 mask_len = DIV_ROUND_UP(pat_len, 8);
9308 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9309 return -EINVAL;
9310 if (pat_len > coalesce->pattern_max_len ||
9311 pat_len < coalesce->pattern_min_len)
9312 return -EINVAL;
9313
9314 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9315 pkt_offset = 0;
9316 else
9317 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9318 if (pkt_offset > coalesce->max_pkt_offset)
9319 return -EINVAL;
9320 new_rule->patterns[i].pkt_offset = pkt_offset;
9321
9322 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9323 if (!mask_pat)
9324 return -ENOMEM;
9325
9326 new_rule->patterns[i].mask = mask_pat;
9327 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9328 mask_len);
9329
9330 mask_pat += mask_len;
9331 new_rule->patterns[i].pattern = mask_pat;
9332 new_rule->patterns[i].pattern_len = pat_len;
9333 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9334 pat_len);
9335 i++;
9336 }
9337
9338 return 0;
9339 }
9340
9341 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9342 {
9343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9344 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9345 struct cfg80211_coalesce new_coalesce = {};
9346 struct cfg80211_coalesce *n_coalesce;
9347 int err, rem_rule, n_rules = 0, i, j;
9348 struct nlattr *rule;
9349 struct cfg80211_coalesce_rules *tmp_rule;
9350
9351 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9352 return -EOPNOTSUPP;
9353
9354 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9355 cfg80211_rdev_free_coalesce(rdev);
9356 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9357 return 0;
9358 }
9359
9360 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9361 rem_rule)
9362 n_rules++;
9363 if (n_rules > coalesce->n_rules)
9364 return -EINVAL;
9365
9366 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9367 GFP_KERNEL);
9368 if (!new_coalesce.rules)
9369 return -ENOMEM;
9370
9371 new_coalesce.n_rules = n_rules;
9372 i = 0;
9373
9374 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9375 rem_rule) {
9376 err = nl80211_parse_coalesce_rule(rdev, rule,
9377 &new_coalesce.rules[i]);
9378 if (err)
9379 goto error;
9380
9381 i++;
9382 }
9383
9384 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9385 if (err)
9386 goto error;
9387
9388 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9389 if (!n_coalesce) {
9390 err = -ENOMEM;
9391 goto error;
9392 }
9393 cfg80211_rdev_free_coalesce(rdev);
9394 rdev->coalesce = n_coalesce;
9395
9396 return 0;
9397 error:
9398 for (i = 0; i < new_coalesce.n_rules; i++) {
9399 tmp_rule = &new_coalesce.rules[i];
9400 for (j = 0; j < tmp_rule->n_patterns; j++)
9401 kfree(tmp_rule->patterns[j].mask);
9402 kfree(tmp_rule->patterns);
9403 }
9404 kfree(new_coalesce.rules);
9405
9406 return err;
9407 }
9408
9409 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9410 {
9411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9412 struct net_device *dev = info->user_ptr[1];
9413 struct wireless_dev *wdev = dev->ieee80211_ptr;
9414 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9415 struct cfg80211_gtk_rekey_data rekey_data;
9416 int err;
9417
9418 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9419 return -EINVAL;
9420
9421 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9422 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9423 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9424 nl80211_rekey_policy);
9425 if (err)
9426 return err;
9427
9428 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9429 return -ERANGE;
9430 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9431 return -ERANGE;
9432 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9433 return -ERANGE;
9434
9435 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9436 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9437 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9438
9439 wdev_lock(wdev);
9440 if (!wdev->current_bss) {
9441 err = -ENOTCONN;
9442 goto out;
9443 }
9444
9445 if (!rdev->ops->set_rekey_data) {
9446 err = -EOPNOTSUPP;
9447 goto out;
9448 }
9449
9450 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9451 out:
9452 wdev_unlock(wdev);
9453 return err;
9454 }
9455
9456 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9457 struct genl_info *info)
9458 {
9459 struct net_device *dev = info->user_ptr[1];
9460 struct wireless_dev *wdev = dev->ieee80211_ptr;
9461
9462 if (wdev->iftype != NL80211_IFTYPE_AP &&
9463 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9464 return -EINVAL;
9465
9466 if (wdev->ap_unexpected_nlportid)
9467 return -EBUSY;
9468
9469 wdev->ap_unexpected_nlportid = info->snd_portid;
9470 return 0;
9471 }
9472
9473 static int nl80211_probe_client(struct sk_buff *skb,
9474 struct genl_info *info)
9475 {
9476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9477 struct net_device *dev = info->user_ptr[1];
9478 struct wireless_dev *wdev = dev->ieee80211_ptr;
9479 struct sk_buff *msg;
9480 void *hdr;
9481 const u8 *addr;
9482 u64 cookie;
9483 int err;
9484
9485 if (wdev->iftype != NL80211_IFTYPE_AP &&
9486 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9487 return -EOPNOTSUPP;
9488
9489 if (!info->attrs[NL80211_ATTR_MAC])
9490 return -EINVAL;
9491
9492 if (!rdev->ops->probe_client)
9493 return -EOPNOTSUPP;
9494
9495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9496 if (!msg)
9497 return -ENOMEM;
9498
9499 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9500 NL80211_CMD_PROBE_CLIENT);
9501 if (!hdr) {
9502 err = -ENOBUFS;
9503 goto free_msg;
9504 }
9505
9506 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9507
9508 err = rdev_probe_client(rdev, dev, addr, &cookie);
9509 if (err)
9510 goto free_msg;
9511
9512 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9513 goto nla_put_failure;
9514
9515 genlmsg_end(msg, hdr);
9516
9517 return genlmsg_reply(msg, info);
9518
9519 nla_put_failure:
9520 err = -ENOBUFS;
9521 free_msg:
9522 nlmsg_free(msg);
9523 return err;
9524 }
9525
9526 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9527 {
9528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9529 struct cfg80211_beacon_registration *reg, *nreg;
9530 int rv;
9531
9532 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9533 return -EOPNOTSUPP;
9534
9535 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9536 if (!nreg)
9537 return -ENOMEM;
9538
9539 /* First, check if already registered. */
9540 spin_lock_bh(&rdev->beacon_registrations_lock);
9541 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9542 if (reg->nlportid == info->snd_portid) {
9543 rv = -EALREADY;
9544 goto out_err;
9545 }
9546 }
9547 /* Add it to the list */
9548 nreg->nlportid = info->snd_portid;
9549 list_add(&nreg->list, &rdev->beacon_registrations);
9550
9551 spin_unlock_bh(&rdev->beacon_registrations_lock);
9552
9553 return 0;
9554 out_err:
9555 spin_unlock_bh(&rdev->beacon_registrations_lock);
9556 kfree(nreg);
9557 return rv;
9558 }
9559
9560 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9561 {
9562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9563 struct wireless_dev *wdev = info->user_ptr[1];
9564 int err;
9565
9566 if (!rdev->ops->start_p2p_device)
9567 return -EOPNOTSUPP;
9568
9569 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9570 return -EOPNOTSUPP;
9571
9572 if (wdev->p2p_started)
9573 return 0;
9574
9575 if (rfkill_blocked(rdev->rfkill))
9576 return -ERFKILL;
9577
9578 err = rdev_start_p2p_device(rdev, wdev);
9579 if (err)
9580 return err;
9581
9582 wdev->p2p_started = true;
9583 rdev->opencount++;
9584
9585 return 0;
9586 }
9587
9588 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9589 {
9590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9591 struct wireless_dev *wdev = info->user_ptr[1];
9592
9593 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9594 return -EOPNOTSUPP;
9595
9596 if (!rdev->ops->stop_p2p_device)
9597 return -EOPNOTSUPP;
9598
9599 cfg80211_stop_p2p_device(rdev, wdev);
9600
9601 return 0;
9602 }
9603
9604 static int nl80211_get_protocol_features(struct sk_buff *skb,
9605 struct genl_info *info)
9606 {
9607 void *hdr;
9608 struct sk_buff *msg;
9609
9610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9611 if (!msg)
9612 return -ENOMEM;
9613
9614 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9615 NL80211_CMD_GET_PROTOCOL_FEATURES);
9616 if (!hdr)
9617 goto nla_put_failure;
9618
9619 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9620 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9621 goto nla_put_failure;
9622
9623 genlmsg_end(msg, hdr);
9624 return genlmsg_reply(msg, info);
9625
9626 nla_put_failure:
9627 kfree_skb(msg);
9628 return -ENOBUFS;
9629 }
9630
9631 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9632 {
9633 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9634 struct cfg80211_update_ft_ies_params ft_params;
9635 struct net_device *dev = info->user_ptr[1];
9636
9637 if (!rdev->ops->update_ft_ies)
9638 return -EOPNOTSUPP;
9639
9640 if (!info->attrs[NL80211_ATTR_MDID] ||
9641 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9642 return -EINVAL;
9643
9644 memset(&ft_params, 0, sizeof(ft_params));
9645 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9646 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9647 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9648
9649 return rdev_update_ft_ies(rdev, dev, &ft_params);
9650 }
9651
9652 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9653 struct genl_info *info)
9654 {
9655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9656 struct wireless_dev *wdev = info->user_ptr[1];
9657 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9658 u16 duration;
9659 int ret;
9660
9661 if (!rdev->ops->crit_proto_start)
9662 return -EOPNOTSUPP;
9663
9664 if (WARN_ON(!rdev->ops->crit_proto_stop))
9665 return -EINVAL;
9666
9667 if (rdev->crit_proto_nlportid)
9668 return -EBUSY;
9669
9670 /* determine protocol if provided */
9671 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9672 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9673
9674 if (proto >= NUM_NL80211_CRIT_PROTO)
9675 return -EINVAL;
9676
9677 /* timeout must be provided */
9678 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9679 return -EINVAL;
9680
9681 duration =
9682 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9683
9684 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9685 return -ERANGE;
9686
9687 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9688 if (!ret)
9689 rdev->crit_proto_nlportid = info->snd_portid;
9690
9691 return ret;
9692 }
9693
9694 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9695 struct genl_info *info)
9696 {
9697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9698 struct wireless_dev *wdev = info->user_ptr[1];
9699
9700 if (!rdev->ops->crit_proto_stop)
9701 return -EOPNOTSUPP;
9702
9703 if (rdev->crit_proto_nlportid) {
9704 rdev->crit_proto_nlportid = 0;
9705 rdev_crit_proto_stop(rdev, wdev);
9706 }
9707 return 0;
9708 }
9709
9710 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9711 {
9712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9713 struct wireless_dev *wdev =
9714 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9715 int i, err;
9716 u32 vid, subcmd;
9717
9718 if (!rdev->wiphy.vendor_commands)
9719 return -EOPNOTSUPP;
9720
9721 if (IS_ERR(wdev)) {
9722 err = PTR_ERR(wdev);
9723 if (err != -EINVAL)
9724 return err;
9725 wdev = NULL;
9726 } else if (wdev->wiphy != &rdev->wiphy) {
9727 return -EINVAL;
9728 }
9729
9730 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9731 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9732 return -EINVAL;
9733
9734 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9735 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9736 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9737 const struct wiphy_vendor_command *vcmd;
9738 void *data = NULL;
9739 int len = 0;
9740
9741 vcmd = &rdev->wiphy.vendor_commands[i];
9742
9743 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9744 continue;
9745
9746 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9747 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9748 if (!wdev)
9749 return -EINVAL;
9750 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9751 !wdev->netdev)
9752 return -EINVAL;
9753
9754 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9755 if (wdev->netdev &&
9756 !netif_running(wdev->netdev))
9757 return -ENETDOWN;
9758 if (!wdev->netdev && !wdev->p2p_started)
9759 return -ENETDOWN;
9760 }
9761 } else {
9762 wdev = NULL;
9763 }
9764
9765 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9766 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9767 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9768 }
9769
9770 rdev->cur_cmd_info = info;
9771 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9772 data, len);
9773 rdev->cur_cmd_info = NULL;
9774 return err;
9775 }
9776
9777 return -EOPNOTSUPP;
9778 }
9779
9780 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9781 enum nl80211_commands cmd,
9782 enum nl80211_attrs attr,
9783 int approxlen)
9784 {
9785 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9786
9787 if (WARN_ON(!rdev->cur_cmd_info))
9788 return NULL;
9789
9790 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9791 rdev->cur_cmd_info->snd_portid,
9792 rdev->cur_cmd_info->snd_seq,
9793 cmd, attr, NULL, GFP_KERNEL);
9794 }
9795 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9796
9797 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9798 {
9799 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9800 void *hdr = ((void **)skb->cb)[1];
9801 struct nlattr *data = ((void **)skb->cb)[2];
9802
9803 /* clear CB data for netlink core to own from now on */
9804 memset(skb->cb, 0, sizeof(skb->cb));
9805
9806 if (WARN_ON(!rdev->cur_cmd_info)) {
9807 kfree_skb(skb);
9808 return -EINVAL;
9809 }
9810
9811 nla_nest_end(skb, data);
9812 genlmsg_end(skb, hdr);
9813 return genlmsg_reply(skb, rdev->cur_cmd_info);
9814 }
9815 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9816
9817
9818 static int nl80211_set_qos_map(struct sk_buff *skb,
9819 struct genl_info *info)
9820 {
9821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9822 struct cfg80211_qos_map *qos_map = NULL;
9823 struct net_device *dev = info->user_ptr[1];
9824 u8 *pos, len, num_des, des_len, des;
9825 int ret;
9826
9827 if (!rdev->ops->set_qos_map)
9828 return -EOPNOTSUPP;
9829
9830 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9831 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9832 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9833
9834 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9835 len > IEEE80211_QOS_MAP_LEN_MAX)
9836 return -EINVAL;
9837
9838 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9839 if (!qos_map)
9840 return -ENOMEM;
9841
9842 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9843 if (num_des) {
9844 des_len = num_des *
9845 sizeof(struct cfg80211_dscp_exception);
9846 memcpy(qos_map->dscp_exception, pos, des_len);
9847 qos_map->num_des = num_des;
9848 for (des = 0; des < num_des; des++) {
9849 if (qos_map->dscp_exception[des].up > 7) {
9850 kfree(qos_map);
9851 return -EINVAL;
9852 }
9853 }
9854 pos += des_len;
9855 }
9856 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9857 }
9858
9859 wdev_lock(dev->ieee80211_ptr);
9860 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9861 if (!ret)
9862 ret = rdev_set_qos_map(rdev, dev, qos_map);
9863 wdev_unlock(dev->ieee80211_ptr);
9864
9865 kfree(qos_map);
9866 return ret;
9867 }
9868
9869 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9870 {
9871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9872 struct net_device *dev = info->user_ptr[1];
9873 struct wireless_dev *wdev = dev->ieee80211_ptr;
9874 const u8 *peer;
9875 u8 tsid, up;
9876 u16 admitted_time = 0;
9877 int err;
9878
9879 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9880 return -EOPNOTSUPP;
9881
9882 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9883 !info->attrs[NL80211_ATTR_USER_PRIO])
9884 return -EINVAL;
9885
9886 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9887 if (tsid >= IEEE80211_NUM_TIDS)
9888 return -EINVAL;
9889
9890 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9891 if (up >= IEEE80211_NUM_UPS)
9892 return -EINVAL;
9893
9894 /* WMM uses TIDs 0-7 even for TSPEC */
9895 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9896 /* TODO: handle 802.11 TSPEC/admission control
9897 * need more attributes for that (e.g. BA session requirement);
9898 * change the WMM adminssion test above to allow both then
9899 */
9900 return -EINVAL;
9901 }
9902
9903 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9904
9905 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9906 admitted_time =
9907 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9908 if (!admitted_time)
9909 return -EINVAL;
9910 }
9911
9912 wdev_lock(wdev);
9913 switch (wdev->iftype) {
9914 case NL80211_IFTYPE_STATION:
9915 case NL80211_IFTYPE_P2P_CLIENT:
9916 if (wdev->current_bss)
9917 break;
9918 err = -ENOTCONN;
9919 goto out;
9920 default:
9921 err = -EOPNOTSUPP;
9922 goto out;
9923 }
9924
9925 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9926
9927 out:
9928 wdev_unlock(wdev);
9929 return err;
9930 }
9931
9932 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9933 {
9934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9935 struct net_device *dev = info->user_ptr[1];
9936 struct wireless_dev *wdev = dev->ieee80211_ptr;
9937 const u8 *peer;
9938 u8 tsid;
9939 int err;
9940
9941 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9942 return -EINVAL;
9943
9944 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9945 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9946
9947 wdev_lock(wdev);
9948 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9949 wdev_unlock(wdev);
9950
9951 return err;
9952 }
9953
9954 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9955 struct genl_info *info)
9956 {
9957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9958 struct net_device *dev = info->user_ptr[1];
9959 struct wireless_dev *wdev = dev->ieee80211_ptr;
9960 struct cfg80211_chan_def chandef = {};
9961 const u8 *addr;
9962 u8 oper_class;
9963 int err;
9964
9965 if (!rdev->ops->tdls_channel_switch ||
9966 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9967 return -EOPNOTSUPP;
9968
9969 switch (dev->ieee80211_ptr->iftype) {
9970 case NL80211_IFTYPE_STATION:
9971 case NL80211_IFTYPE_P2P_CLIENT:
9972 break;
9973 default:
9974 return -EOPNOTSUPP;
9975 }
9976
9977 if (!info->attrs[NL80211_ATTR_MAC] ||
9978 !info->attrs[NL80211_ATTR_OPER_CLASS])
9979 return -EINVAL;
9980
9981 err = nl80211_parse_chandef(rdev, info, &chandef);
9982 if (err)
9983 return err;
9984
9985 /*
9986 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9987 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9988 * specification is not defined for them.
9989 */
9990 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9991 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9992 chandef.width != NL80211_CHAN_WIDTH_20)
9993 return -EINVAL;
9994
9995 /* we will be active on the TDLS link */
9996 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9997 return -EINVAL;
9998
9999 /* don't allow switching to DFS channels */
10000 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10001 return -EINVAL;
10002
10003 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10004 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10005
10006 wdev_lock(wdev);
10007 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10008 wdev_unlock(wdev);
10009
10010 return err;
10011 }
10012
10013 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10014 struct genl_info *info)
10015 {
10016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10017 struct net_device *dev = info->user_ptr[1];
10018 struct wireless_dev *wdev = dev->ieee80211_ptr;
10019 const u8 *addr;
10020
10021 if (!rdev->ops->tdls_channel_switch ||
10022 !rdev->ops->tdls_cancel_channel_switch ||
10023 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10024 return -EOPNOTSUPP;
10025
10026 switch (dev->ieee80211_ptr->iftype) {
10027 case NL80211_IFTYPE_STATION:
10028 case NL80211_IFTYPE_P2P_CLIENT:
10029 break;
10030 default:
10031 return -EOPNOTSUPP;
10032 }
10033
10034 if (!info->attrs[NL80211_ATTR_MAC])
10035 return -EINVAL;
10036
10037 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10038
10039 wdev_lock(wdev);
10040 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10041 wdev_unlock(wdev);
10042
10043 return 0;
10044 }
10045
10046 #define NL80211_FLAG_NEED_WIPHY 0x01
10047 #define NL80211_FLAG_NEED_NETDEV 0x02
10048 #define NL80211_FLAG_NEED_RTNL 0x04
10049 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10050 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10051 NL80211_FLAG_CHECK_NETDEV_UP)
10052 #define NL80211_FLAG_NEED_WDEV 0x10
10053 /* If a netdev is associated, it must be UP, P2P must be started */
10054 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10055 NL80211_FLAG_CHECK_NETDEV_UP)
10056 #define NL80211_FLAG_CLEAR_SKB 0x20
10057
10058 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10059 struct genl_info *info)
10060 {
10061 struct cfg80211_registered_device *rdev;
10062 struct wireless_dev *wdev;
10063 struct net_device *dev;
10064 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10065
10066 if (rtnl)
10067 rtnl_lock();
10068
10069 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10070 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10071 if (IS_ERR(rdev)) {
10072 if (rtnl)
10073 rtnl_unlock();
10074 return PTR_ERR(rdev);
10075 }
10076 info->user_ptr[0] = rdev;
10077 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10078 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10079 ASSERT_RTNL();
10080
10081 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10082 info->attrs);
10083 if (IS_ERR(wdev)) {
10084 if (rtnl)
10085 rtnl_unlock();
10086 return PTR_ERR(wdev);
10087 }
10088
10089 dev = wdev->netdev;
10090 rdev = wiphy_to_rdev(wdev->wiphy);
10091
10092 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10093 if (!dev) {
10094 if (rtnl)
10095 rtnl_unlock();
10096 return -EINVAL;
10097 }
10098
10099 info->user_ptr[1] = dev;
10100 } else {
10101 info->user_ptr[1] = wdev;
10102 }
10103
10104 if (dev) {
10105 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10106 !netif_running(dev)) {
10107 if (rtnl)
10108 rtnl_unlock();
10109 return -ENETDOWN;
10110 }
10111
10112 dev_hold(dev);
10113 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10114 if (!wdev->p2p_started) {
10115 if (rtnl)
10116 rtnl_unlock();
10117 return -ENETDOWN;
10118 }
10119 }
10120
10121 info->user_ptr[0] = rdev;
10122 }
10123
10124 return 0;
10125 }
10126
10127 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10128 struct genl_info *info)
10129 {
10130 if (info->user_ptr[1]) {
10131 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10132 struct wireless_dev *wdev = info->user_ptr[1];
10133
10134 if (wdev->netdev)
10135 dev_put(wdev->netdev);
10136 } else {
10137 dev_put(info->user_ptr[1]);
10138 }
10139 }
10140
10141 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10142 rtnl_unlock();
10143
10144 /* If needed, clear the netlink message payload from the SKB
10145 * as it might contain key data that shouldn't stick around on
10146 * the heap after the SKB is freed. The netlink message header
10147 * is still needed for further processing, so leave it intact.
10148 */
10149 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10150 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10151
10152 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10153 }
10154 }
10155
10156 static const struct genl_ops nl80211_ops[] = {
10157 {
10158 .cmd = NL80211_CMD_GET_WIPHY,
10159 .doit = nl80211_get_wiphy,
10160 .dumpit = nl80211_dump_wiphy,
10161 .done = nl80211_dump_wiphy_done,
10162 .policy = nl80211_policy,
10163 /* can be retrieved by unprivileged users */
10164 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10165 NL80211_FLAG_NEED_RTNL,
10166 },
10167 {
10168 .cmd = NL80211_CMD_SET_WIPHY,
10169 .doit = nl80211_set_wiphy,
10170 .policy = nl80211_policy,
10171 .flags = GENL_ADMIN_PERM,
10172 .internal_flags = NL80211_FLAG_NEED_RTNL,
10173 },
10174 {
10175 .cmd = NL80211_CMD_GET_INTERFACE,
10176 .doit = nl80211_get_interface,
10177 .dumpit = nl80211_dump_interface,
10178 .policy = nl80211_policy,
10179 /* can be retrieved by unprivileged users */
10180 .internal_flags = NL80211_FLAG_NEED_WDEV |
10181 NL80211_FLAG_NEED_RTNL,
10182 },
10183 {
10184 .cmd = NL80211_CMD_SET_INTERFACE,
10185 .doit = nl80211_set_interface,
10186 .policy = nl80211_policy,
10187 .flags = GENL_ADMIN_PERM,
10188 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10189 NL80211_FLAG_NEED_RTNL,
10190 },
10191 {
10192 .cmd = NL80211_CMD_NEW_INTERFACE,
10193 .doit = nl80211_new_interface,
10194 .policy = nl80211_policy,
10195 .flags = GENL_ADMIN_PERM,
10196 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10197 NL80211_FLAG_NEED_RTNL,
10198 },
10199 {
10200 .cmd = NL80211_CMD_DEL_INTERFACE,
10201 .doit = nl80211_del_interface,
10202 .policy = nl80211_policy,
10203 .flags = GENL_ADMIN_PERM,
10204 .internal_flags = NL80211_FLAG_NEED_WDEV |
10205 NL80211_FLAG_NEED_RTNL,
10206 },
10207 {
10208 .cmd = NL80211_CMD_GET_KEY,
10209 .doit = nl80211_get_key,
10210 .policy = nl80211_policy,
10211 .flags = GENL_ADMIN_PERM,
10212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10213 NL80211_FLAG_NEED_RTNL,
10214 },
10215 {
10216 .cmd = NL80211_CMD_SET_KEY,
10217 .doit = nl80211_set_key,
10218 .policy = nl80211_policy,
10219 .flags = GENL_ADMIN_PERM,
10220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10221 NL80211_FLAG_NEED_RTNL |
10222 NL80211_FLAG_CLEAR_SKB,
10223 },
10224 {
10225 .cmd = NL80211_CMD_NEW_KEY,
10226 .doit = nl80211_new_key,
10227 .policy = nl80211_policy,
10228 .flags = GENL_ADMIN_PERM,
10229 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10230 NL80211_FLAG_NEED_RTNL |
10231 NL80211_FLAG_CLEAR_SKB,
10232 },
10233 {
10234 .cmd = NL80211_CMD_DEL_KEY,
10235 .doit = nl80211_del_key,
10236 .policy = nl80211_policy,
10237 .flags = GENL_ADMIN_PERM,
10238 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10239 NL80211_FLAG_NEED_RTNL,
10240 },
10241 {
10242 .cmd = NL80211_CMD_SET_BEACON,
10243 .policy = nl80211_policy,
10244 .flags = GENL_ADMIN_PERM,
10245 .doit = nl80211_set_beacon,
10246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10247 NL80211_FLAG_NEED_RTNL,
10248 },
10249 {
10250 .cmd = NL80211_CMD_START_AP,
10251 .policy = nl80211_policy,
10252 .flags = GENL_ADMIN_PERM,
10253 .doit = nl80211_start_ap,
10254 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10255 NL80211_FLAG_NEED_RTNL,
10256 },
10257 {
10258 .cmd = NL80211_CMD_STOP_AP,
10259 .policy = nl80211_policy,
10260 .flags = GENL_ADMIN_PERM,
10261 .doit = nl80211_stop_ap,
10262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10263 NL80211_FLAG_NEED_RTNL,
10264 },
10265 {
10266 .cmd = NL80211_CMD_GET_STATION,
10267 .doit = nl80211_get_station,
10268 .dumpit = nl80211_dump_station,
10269 .policy = nl80211_policy,
10270 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10271 NL80211_FLAG_NEED_RTNL,
10272 },
10273 {
10274 .cmd = NL80211_CMD_SET_STATION,
10275 .doit = nl80211_set_station,
10276 .policy = nl80211_policy,
10277 .flags = GENL_ADMIN_PERM,
10278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10279 NL80211_FLAG_NEED_RTNL,
10280 },
10281 {
10282 .cmd = NL80211_CMD_NEW_STATION,
10283 .doit = nl80211_new_station,
10284 .policy = nl80211_policy,
10285 .flags = GENL_ADMIN_PERM,
10286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10287 NL80211_FLAG_NEED_RTNL,
10288 },
10289 {
10290 .cmd = NL80211_CMD_DEL_STATION,
10291 .doit = nl80211_del_station,
10292 .policy = nl80211_policy,
10293 .flags = GENL_ADMIN_PERM,
10294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10295 NL80211_FLAG_NEED_RTNL,
10296 },
10297 {
10298 .cmd = NL80211_CMD_GET_MPATH,
10299 .doit = nl80211_get_mpath,
10300 .dumpit = nl80211_dump_mpath,
10301 .policy = nl80211_policy,
10302 .flags = GENL_ADMIN_PERM,
10303 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10304 NL80211_FLAG_NEED_RTNL,
10305 },
10306 {
10307 .cmd = NL80211_CMD_GET_MPP,
10308 .doit = nl80211_get_mpp,
10309 .dumpit = nl80211_dump_mpp,
10310 .policy = nl80211_policy,
10311 .flags = GENL_ADMIN_PERM,
10312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10313 NL80211_FLAG_NEED_RTNL,
10314 },
10315 {
10316 .cmd = NL80211_CMD_SET_MPATH,
10317 .doit = nl80211_set_mpath,
10318 .policy = nl80211_policy,
10319 .flags = GENL_ADMIN_PERM,
10320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10321 NL80211_FLAG_NEED_RTNL,
10322 },
10323 {
10324 .cmd = NL80211_CMD_NEW_MPATH,
10325 .doit = nl80211_new_mpath,
10326 .policy = nl80211_policy,
10327 .flags = GENL_ADMIN_PERM,
10328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329 NL80211_FLAG_NEED_RTNL,
10330 },
10331 {
10332 .cmd = NL80211_CMD_DEL_MPATH,
10333 .doit = nl80211_del_mpath,
10334 .policy = nl80211_policy,
10335 .flags = GENL_ADMIN_PERM,
10336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10337 NL80211_FLAG_NEED_RTNL,
10338 },
10339 {
10340 .cmd = NL80211_CMD_SET_BSS,
10341 .doit = nl80211_set_bss,
10342 .policy = nl80211_policy,
10343 .flags = GENL_ADMIN_PERM,
10344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10345 NL80211_FLAG_NEED_RTNL,
10346 },
10347 {
10348 .cmd = NL80211_CMD_GET_REG,
10349 .doit = nl80211_get_reg_do,
10350 .dumpit = nl80211_get_reg_dump,
10351 .policy = nl80211_policy,
10352 .internal_flags = NL80211_FLAG_NEED_RTNL,
10353 /* can be retrieved by unprivileged users */
10354 },
10355 {
10356 .cmd = NL80211_CMD_SET_REG,
10357 .doit = nl80211_set_reg,
10358 .policy = nl80211_policy,
10359 .flags = GENL_ADMIN_PERM,
10360 .internal_flags = NL80211_FLAG_NEED_RTNL,
10361 },
10362 {
10363 .cmd = NL80211_CMD_REQ_SET_REG,
10364 .doit = nl80211_req_set_reg,
10365 .policy = nl80211_policy,
10366 .flags = GENL_ADMIN_PERM,
10367 },
10368 {
10369 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10370 .doit = nl80211_get_mesh_config,
10371 .policy = nl80211_policy,
10372 /* can be retrieved by unprivileged users */
10373 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10374 NL80211_FLAG_NEED_RTNL,
10375 },
10376 {
10377 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10378 .doit = nl80211_update_mesh_config,
10379 .policy = nl80211_policy,
10380 .flags = GENL_ADMIN_PERM,
10381 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10382 NL80211_FLAG_NEED_RTNL,
10383 },
10384 {
10385 .cmd = NL80211_CMD_TRIGGER_SCAN,
10386 .doit = nl80211_trigger_scan,
10387 .policy = nl80211_policy,
10388 .flags = GENL_ADMIN_PERM,
10389 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10390 NL80211_FLAG_NEED_RTNL,
10391 },
10392 {
10393 .cmd = NL80211_CMD_GET_SCAN,
10394 .policy = nl80211_policy,
10395 .dumpit = nl80211_dump_scan,
10396 },
10397 {
10398 .cmd = NL80211_CMD_START_SCHED_SCAN,
10399 .doit = nl80211_start_sched_scan,
10400 .policy = nl80211_policy,
10401 .flags = GENL_ADMIN_PERM,
10402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10403 NL80211_FLAG_NEED_RTNL,
10404 },
10405 {
10406 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10407 .doit = nl80211_stop_sched_scan,
10408 .policy = nl80211_policy,
10409 .flags = GENL_ADMIN_PERM,
10410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10411 NL80211_FLAG_NEED_RTNL,
10412 },
10413 {
10414 .cmd = NL80211_CMD_AUTHENTICATE,
10415 .doit = nl80211_authenticate,
10416 .policy = nl80211_policy,
10417 .flags = GENL_ADMIN_PERM,
10418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10419 NL80211_FLAG_NEED_RTNL |
10420 NL80211_FLAG_CLEAR_SKB,
10421 },
10422 {
10423 .cmd = NL80211_CMD_ASSOCIATE,
10424 .doit = nl80211_associate,
10425 .policy = nl80211_policy,
10426 .flags = GENL_ADMIN_PERM,
10427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428 NL80211_FLAG_NEED_RTNL,
10429 },
10430 {
10431 .cmd = NL80211_CMD_DEAUTHENTICATE,
10432 .doit = nl80211_deauthenticate,
10433 .policy = nl80211_policy,
10434 .flags = GENL_ADMIN_PERM,
10435 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436 NL80211_FLAG_NEED_RTNL,
10437 },
10438 {
10439 .cmd = NL80211_CMD_DISASSOCIATE,
10440 .doit = nl80211_disassociate,
10441 .policy = nl80211_policy,
10442 .flags = GENL_ADMIN_PERM,
10443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444 NL80211_FLAG_NEED_RTNL,
10445 },
10446 {
10447 .cmd = NL80211_CMD_JOIN_IBSS,
10448 .doit = nl80211_join_ibss,
10449 .policy = nl80211_policy,
10450 .flags = GENL_ADMIN_PERM,
10451 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10452 NL80211_FLAG_NEED_RTNL,
10453 },
10454 {
10455 .cmd = NL80211_CMD_LEAVE_IBSS,
10456 .doit = nl80211_leave_ibss,
10457 .policy = nl80211_policy,
10458 .flags = GENL_ADMIN_PERM,
10459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460 NL80211_FLAG_NEED_RTNL,
10461 },
10462 #ifdef CONFIG_NL80211_TESTMODE
10463 {
10464 .cmd = NL80211_CMD_TESTMODE,
10465 .doit = nl80211_testmode_do,
10466 .dumpit = nl80211_testmode_dump,
10467 .policy = nl80211_policy,
10468 .flags = GENL_ADMIN_PERM,
10469 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10470 NL80211_FLAG_NEED_RTNL,
10471 },
10472 #endif
10473 {
10474 .cmd = NL80211_CMD_CONNECT,
10475 .doit = nl80211_connect,
10476 .policy = nl80211_policy,
10477 .flags = GENL_ADMIN_PERM,
10478 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10479 NL80211_FLAG_NEED_RTNL,
10480 },
10481 {
10482 .cmd = NL80211_CMD_DISCONNECT,
10483 .doit = nl80211_disconnect,
10484 .policy = nl80211_policy,
10485 .flags = GENL_ADMIN_PERM,
10486 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10487 NL80211_FLAG_NEED_RTNL,
10488 },
10489 {
10490 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10491 .doit = nl80211_wiphy_netns,
10492 .policy = nl80211_policy,
10493 .flags = GENL_ADMIN_PERM,
10494 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10495 NL80211_FLAG_NEED_RTNL,
10496 },
10497 {
10498 .cmd = NL80211_CMD_GET_SURVEY,
10499 .policy = nl80211_policy,
10500 .dumpit = nl80211_dump_survey,
10501 },
10502 {
10503 .cmd = NL80211_CMD_SET_PMKSA,
10504 .doit = nl80211_setdel_pmksa,
10505 .policy = nl80211_policy,
10506 .flags = GENL_ADMIN_PERM,
10507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10508 NL80211_FLAG_NEED_RTNL,
10509 },
10510 {
10511 .cmd = NL80211_CMD_DEL_PMKSA,
10512 .doit = nl80211_setdel_pmksa,
10513 .policy = nl80211_policy,
10514 .flags = GENL_ADMIN_PERM,
10515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10516 NL80211_FLAG_NEED_RTNL,
10517 },
10518 {
10519 .cmd = NL80211_CMD_FLUSH_PMKSA,
10520 .doit = nl80211_flush_pmksa,
10521 .policy = nl80211_policy,
10522 .flags = GENL_ADMIN_PERM,
10523 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10524 NL80211_FLAG_NEED_RTNL,
10525 },
10526 {
10527 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10528 .doit = nl80211_remain_on_channel,
10529 .policy = nl80211_policy,
10530 .flags = GENL_ADMIN_PERM,
10531 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10532 NL80211_FLAG_NEED_RTNL,
10533 },
10534 {
10535 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10536 .doit = nl80211_cancel_remain_on_channel,
10537 .policy = nl80211_policy,
10538 .flags = GENL_ADMIN_PERM,
10539 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10540 NL80211_FLAG_NEED_RTNL,
10541 },
10542 {
10543 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10544 .doit = nl80211_set_tx_bitrate_mask,
10545 .policy = nl80211_policy,
10546 .flags = GENL_ADMIN_PERM,
10547 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10548 NL80211_FLAG_NEED_RTNL,
10549 },
10550 {
10551 .cmd = NL80211_CMD_REGISTER_FRAME,
10552 .doit = nl80211_register_mgmt,
10553 .policy = nl80211_policy,
10554 .flags = GENL_ADMIN_PERM,
10555 .internal_flags = NL80211_FLAG_NEED_WDEV |
10556 NL80211_FLAG_NEED_RTNL,
10557 },
10558 {
10559 .cmd = NL80211_CMD_FRAME,
10560 .doit = nl80211_tx_mgmt,
10561 .policy = nl80211_policy,
10562 .flags = GENL_ADMIN_PERM,
10563 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10564 NL80211_FLAG_NEED_RTNL,
10565 },
10566 {
10567 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10568 .doit = nl80211_tx_mgmt_cancel_wait,
10569 .policy = nl80211_policy,
10570 .flags = GENL_ADMIN_PERM,
10571 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10572 NL80211_FLAG_NEED_RTNL,
10573 },
10574 {
10575 .cmd = NL80211_CMD_SET_POWER_SAVE,
10576 .doit = nl80211_set_power_save,
10577 .policy = nl80211_policy,
10578 .flags = GENL_ADMIN_PERM,
10579 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10580 NL80211_FLAG_NEED_RTNL,
10581 },
10582 {
10583 .cmd = NL80211_CMD_GET_POWER_SAVE,
10584 .doit = nl80211_get_power_save,
10585 .policy = nl80211_policy,
10586 /* can be retrieved by unprivileged users */
10587 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10588 NL80211_FLAG_NEED_RTNL,
10589 },
10590 {
10591 .cmd = NL80211_CMD_SET_CQM,
10592 .doit = nl80211_set_cqm,
10593 .policy = nl80211_policy,
10594 .flags = GENL_ADMIN_PERM,
10595 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10596 NL80211_FLAG_NEED_RTNL,
10597 },
10598 {
10599 .cmd = NL80211_CMD_SET_CHANNEL,
10600 .doit = nl80211_set_channel,
10601 .policy = nl80211_policy,
10602 .flags = GENL_ADMIN_PERM,
10603 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10604 NL80211_FLAG_NEED_RTNL,
10605 },
10606 {
10607 .cmd = NL80211_CMD_SET_WDS_PEER,
10608 .doit = nl80211_set_wds_peer,
10609 .policy = nl80211_policy,
10610 .flags = GENL_ADMIN_PERM,
10611 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10612 NL80211_FLAG_NEED_RTNL,
10613 },
10614 {
10615 .cmd = NL80211_CMD_JOIN_MESH,
10616 .doit = nl80211_join_mesh,
10617 .policy = nl80211_policy,
10618 .flags = GENL_ADMIN_PERM,
10619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10620 NL80211_FLAG_NEED_RTNL,
10621 },
10622 {
10623 .cmd = NL80211_CMD_LEAVE_MESH,
10624 .doit = nl80211_leave_mesh,
10625 .policy = nl80211_policy,
10626 .flags = GENL_ADMIN_PERM,
10627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10628 NL80211_FLAG_NEED_RTNL,
10629 },
10630 {
10631 .cmd = NL80211_CMD_JOIN_OCB,
10632 .doit = nl80211_join_ocb,
10633 .policy = nl80211_policy,
10634 .flags = GENL_ADMIN_PERM,
10635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10636 NL80211_FLAG_NEED_RTNL,
10637 },
10638 {
10639 .cmd = NL80211_CMD_LEAVE_OCB,
10640 .doit = nl80211_leave_ocb,
10641 .policy = nl80211_policy,
10642 .flags = GENL_ADMIN_PERM,
10643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10644 NL80211_FLAG_NEED_RTNL,
10645 },
10646 #ifdef CONFIG_PM
10647 {
10648 .cmd = NL80211_CMD_GET_WOWLAN,
10649 .doit = nl80211_get_wowlan,
10650 .policy = nl80211_policy,
10651 /* can be retrieved by unprivileged users */
10652 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10653 NL80211_FLAG_NEED_RTNL,
10654 },
10655 {
10656 .cmd = NL80211_CMD_SET_WOWLAN,
10657 .doit = nl80211_set_wowlan,
10658 .policy = nl80211_policy,
10659 .flags = GENL_ADMIN_PERM,
10660 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10661 NL80211_FLAG_NEED_RTNL,
10662 },
10663 #endif
10664 {
10665 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10666 .doit = nl80211_set_rekey_data,
10667 .policy = nl80211_policy,
10668 .flags = GENL_ADMIN_PERM,
10669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10670 NL80211_FLAG_NEED_RTNL |
10671 NL80211_FLAG_CLEAR_SKB,
10672 },
10673 {
10674 .cmd = NL80211_CMD_TDLS_MGMT,
10675 .doit = nl80211_tdls_mgmt,
10676 .policy = nl80211_policy,
10677 .flags = GENL_ADMIN_PERM,
10678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10679 NL80211_FLAG_NEED_RTNL,
10680 },
10681 {
10682 .cmd = NL80211_CMD_TDLS_OPER,
10683 .doit = nl80211_tdls_oper,
10684 .policy = nl80211_policy,
10685 .flags = GENL_ADMIN_PERM,
10686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10687 NL80211_FLAG_NEED_RTNL,
10688 },
10689 {
10690 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10691 .doit = nl80211_register_unexpected_frame,
10692 .policy = nl80211_policy,
10693 .flags = GENL_ADMIN_PERM,
10694 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10695 NL80211_FLAG_NEED_RTNL,
10696 },
10697 {
10698 .cmd = NL80211_CMD_PROBE_CLIENT,
10699 .doit = nl80211_probe_client,
10700 .policy = nl80211_policy,
10701 .flags = GENL_ADMIN_PERM,
10702 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10703 NL80211_FLAG_NEED_RTNL,
10704 },
10705 {
10706 .cmd = NL80211_CMD_REGISTER_BEACONS,
10707 .doit = nl80211_register_beacons,
10708 .policy = nl80211_policy,
10709 .flags = GENL_ADMIN_PERM,
10710 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10711 NL80211_FLAG_NEED_RTNL,
10712 },
10713 {
10714 .cmd = NL80211_CMD_SET_NOACK_MAP,
10715 .doit = nl80211_set_noack_map,
10716 .policy = nl80211_policy,
10717 .flags = GENL_ADMIN_PERM,
10718 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10719 NL80211_FLAG_NEED_RTNL,
10720 },
10721 {
10722 .cmd = NL80211_CMD_START_P2P_DEVICE,
10723 .doit = nl80211_start_p2p_device,
10724 .policy = nl80211_policy,
10725 .flags = GENL_ADMIN_PERM,
10726 .internal_flags = NL80211_FLAG_NEED_WDEV |
10727 NL80211_FLAG_NEED_RTNL,
10728 },
10729 {
10730 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10731 .doit = nl80211_stop_p2p_device,
10732 .policy = nl80211_policy,
10733 .flags = GENL_ADMIN_PERM,
10734 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10735 NL80211_FLAG_NEED_RTNL,
10736 },
10737 {
10738 .cmd = NL80211_CMD_SET_MCAST_RATE,
10739 .doit = nl80211_set_mcast_rate,
10740 .policy = nl80211_policy,
10741 .flags = GENL_ADMIN_PERM,
10742 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10743 NL80211_FLAG_NEED_RTNL,
10744 },
10745 {
10746 .cmd = NL80211_CMD_SET_MAC_ACL,
10747 .doit = nl80211_set_mac_acl,
10748 .policy = nl80211_policy,
10749 .flags = GENL_ADMIN_PERM,
10750 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10751 NL80211_FLAG_NEED_RTNL,
10752 },
10753 {
10754 .cmd = NL80211_CMD_RADAR_DETECT,
10755 .doit = nl80211_start_radar_detection,
10756 .policy = nl80211_policy,
10757 .flags = GENL_ADMIN_PERM,
10758 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10759 NL80211_FLAG_NEED_RTNL,
10760 },
10761 {
10762 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10763 .doit = nl80211_get_protocol_features,
10764 .policy = nl80211_policy,
10765 },
10766 {
10767 .cmd = NL80211_CMD_UPDATE_FT_IES,
10768 .doit = nl80211_update_ft_ies,
10769 .policy = nl80211_policy,
10770 .flags = GENL_ADMIN_PERM,
10771 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10772 NL80211_FLAG_NEED_RTNL,
10773 },
10774 {
10775 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10776 .doit = nl80211_crit_protocol_start,
10777 .policy = nl80211_policy,
10778 .flags = GENL_ADMIN_PERM,
10779 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10780 NL80211_FLAG_NEED_RTNL,
10781 },
10782 {
10783 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10784 .doit = nl80211_crit_protocol_stop,
10785 .policy = nl80211_policy,
10786 .flags = GENL_ADMIN_PERM,
10787 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10788 NL80211_FLAG_NEED_RTNL,
10789 },
10790 {
10791 .cmd = NL80211_CMD_GET_COALESCE,
10792 .doit = nl80211_get_coalesce,
10793 .policy = nl80211_policy,
10794 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10795 NL80211_FLAG_NEED_RTNL,
10796 },
10797 {
10798 .cmd = NL80211_CMD_SET_COALESCE,
10799 .doit = nl80211_set_coalesce,
10800 .policy = nl80211_policy,
10801 .flags = GENL_ADMIN_PERM,
10802 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10803 NL80211_FLAG_NEED_RTNL,
10804 },
10805 {
10806 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10807 .doit = nl80211_channel_switch,
10808 .policy = nl80211_policy,
10809 .flags = GENL_ADMIN_PERM,
10810 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10811 NL80211_FLAG_NEED_RTNL,
10812 },
10813 {
10814 .cmd = NL80211_CMD_VENDOR,
10815 .doit = nl80211_vendor_cmd,
10816 .policy = nl80211_policy,
10817 .flags = GENL_ADMIN_PERM,
10818 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10819 NL80211_FLAG_NEED_RTNL,
10820 },
10821 {
10822 .cmd = NL80211_CMD_SET_QOS_MAP,
10823 .doit = nl80211_set_qos_map,
10824 .policy = nl80211_policy,
10825 .flags = GENL_ADMIN_PERM,
10826 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10827 NL80211_FLAG_NEED_RTNL,
10828 },
10829 {
10830 .cmd = NL80211_CMD_ADD_TX_TS,
10831 .doit = nl80211_add_tx_ts,
10832 .policy = nl80211_policy,
10833 .flags = GENL_ADMIN_PERM,
10834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10835 NL80211_FLAG_NEED_RTNL,
10836 },
10837 {
10838 .cmd = NL80211_CMD_DEL_TX_TS,
10839 .doit = nl80211_del_tx_ts,
10840 .policy = nl80211_policy,
10841 .flags = GENL_ADMIN_PERM,
10842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10843 NL80211_FLAG_NEED_RTNL,
10844 },
10845 {
10846 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10847 .doit = nl80211_tdls_channel_switch,
10848 .policy = nl80211_policy,
10849 .flags = GENL_ADMIN_PERM,
10850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10851 NL80211_FLAG_NEED_RTNL,
10852 },
10853 {
10854 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10855 .doit = nl80211_tdls_cancel_channel_switch,
10856 .policy = nl80211_policy,
10857 .flags = GENL_ADMIN_PERM,
10858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10859 NL80211_FLAG_NEED_RTNL,
10860 },
10861 };
10862
10863 /* notification functions */
10864
10865 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10866 enum nl80211_commands cmd)
10867 {
10868 struct sk_buff *msg;
10869 struct nl80211_dump_wiphy_state state = {};
10870
10871 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10872 cmd != NL80211_CMD_DEL_WIPHY);
10873
10874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10875 if (!msg)
10876 return;
10877
10878 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10879 nlmsg_free(msg);
10880 return;
10881 }
10882
10883 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10884 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10885 }
10886
10887 static int nl80211_add_scan_req(struct sk_buff *msg,
10888 struct cfg80211_registered_device *rdev)
10889 {
10890 struct cfg80211_scan_request *req = rdev->scan_req;
10891 struct nlattr *nest;
10892 int i;
10893
10894 if (WARN_ON(!req))
10895 return 0;
10896
10897 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10898 if (!nest)
10899 goto nla_put_failure;
10900 for (i = 0; i < req->n_ssids; i++) {
10901 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10902 goto nla_put_failure;
10903 }
10904 nla_nest_end(msg, nest);
10905
10906 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10907 if (!nest)
10908 goto nla_put_failure;
10909 for (i = 0; i < req->n_channels; i++) {
10910 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10911 goto nla_put_failure;
10912 }
10913 nla_nest_end(msg, nest);
10914
10915 if (req->ie &&
10916 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10917 goto nla_put_failure;
10918
10919 if (req->flags &&
10920 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10921 goto nla_put_failure;
10922
10923 return 0;
10924 nla_put_failure:
10925 return -ENOBUFS;
10926 }
10927
10928 static int nl80211_send_scan_msg(struct sk_buff *msg,
10929 struct cfg80211_registered_device *rdev,
10930 struct wireless_dev *wdev,
10931 u32 portid, u32 seq, int flags,
10932 u32 cmd)
10933 {
10934 void *hdr;
10935
10936 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10937 if (!hdr)
10938 return -1;
10939
10940 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10941 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10942 wdev->netdev->ifindex)) ||
10943 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10944 goto nla_put_failure;
10945
10946 /* ignore errors and send incomplete event anyway */
10947 nl80211_add_scan_req(msg, rdev);
10948
10949 return genlmsg_end(msg, hdr);
10950
10951 nla_put_failure:
10952 genlmsg_cancel(msg, hdr);
10953 return -EMSGSIZE;
10954 }
10955
10956 static int
10957 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10958 struct cfg80211_registered_device *rdev,
10959 struct net_device *netdev,
10960 u32 portid, u32 seq, int flags, u32 cmd)
10961 {
10962 void *hdr;
10963
10964 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10965 if (!hdr)
10966 return -1;
10967
10968 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10969 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10970 goto nla_put_failure;
10971
10972 return genlmsg_end(msg, hdr);
10973
10974 nla_put_failure:
10975 genlmsg_cancel(msg, hdr);
10976 return -EMSGSIZE;
10977 }
10978
10979 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10980 struct wireless_dev *wdev)
10981 {
10982 struct sk_buff *msg;
10983
10984 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10985 if (!msg)
10986 return;
10987
10988 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10989 NL80211_CMD_TRIGGER_SCAN) < 0) {
10990 nlmsg_free(msg);
10991 return;
10992 }
10993
10994 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10995 NL80211_MCGRP_SCAN, GFP_KERNEL);
10996 }
10997
10998 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10999 struct wireless_dev *wdev, bool aborted)
11000 {
11001 struct sk_buff *msg;
11002
11003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11004 if (!msg)
11005 return NULL;
11006
11007 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11008 aborted ? NL80211_CMD_SCAN_ABORTED :
11009 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11010 nlmsg_free(msg);
11011 return NULL;
11012 }
11013
11014 return msg;
11015 }
11016
11017 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11018 struct sk_buff *msg)
11019 {
11020 if (!msg)
11021 return;
11022
11023 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11024 NL80211_MCGRP_SCAN, GFP_KERNEL);
11025 }
11026
11027 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11028 struct net_device *netdev)
11029 {
11030 struct sk_buff *msg;
11031
11032 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11033 if (!msg)
11034 return;
11035
11036 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11037 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11038 nlmsg_free(msg);
11039 return;
11040 }
11041
11042 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11043 NL80211_MCGRP_SCAN, GFP_KERNEL);
11044 }
11045
11046 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11047 struct net_device *netdev, u32 cmd)
11048 {
11049 struct sk_buff *msg;
11050
11051 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11052 if (!msg)
11053 return;
11054
11055 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11056 nlmsg_free(msg);
11057 return;
11058 }
11059
11060 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11061 NL80211_MCGRP_SCAN, GFP_KERNEL);
11062 }
11063
11064 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11065 struct regulatory_request *request)
11066 {
11067 /* Userspace can always count this one always being set */
11068 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11069 goto nla_put_failure;
11070
11071 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11072 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11073 NL80211_REGDOM_TYPE_WORLD))
11074 goto nla_put_failure;
11075 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11076 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11077 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11078 goto nla_put_failure;
11079 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11080 request->intersect) {
11081 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11082 NL80211_REGDOM_TYPE_INTERSECTION))
11083 goto nla_put_failure;
11084 } else {
11085 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11086 NL80211_REGDOM_TYPE_COUNTRY) ||
11087 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11088 request->alpha2))
11089 goto nla_put_failure;
11090 }
11091
11092 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11093 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11094
11095 if (wiphy &&
11096 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11097 goto nla_put_failure;
11098
11099 if (wiphy &&
11100 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11101 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11102 goto nla_put_failure;
11103 }
11104
11105 return true;
11106
11107 nla_put_failure:
11108 return false;
11109 }
11110
11111 /*
11112 * This can happen on global regulatory changes or device specific settings
11113 * based on custom regulatory domains.
11114 */
11115 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11116 struct regulatory_request *request)
11117 {
11118 struct sk_buff *msg;
11119 void *hdr;
11120
11121 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11122 if (!msg)
11123 return;
11124
11125 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11126 if (!hdr) {
11127 nlmsg_free(msg);
11128 return;
11129 }
11130
11131 if (nl80211_reg_change_event_fill(msg, request) == false)
11132 goto nla_put_failure;
11133
11134 genlmsg_end(msg, hdr);
11135
11136 rcu_read_lock();
11137 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11138 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11139 rcu_read_unlock();
11140
11141 return;
11142
11143 nla_put_failure:
11144 genlmsg_cancel(msg, hdr);
11145 nlmsg_free(msg);
11146 }
11147
11148 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11149 struct net_device *netdev,
11150 const u8 *buf, size_t len,
11151 enum nl80211_commands cmd, gfp_t gfp,
11152 int uapsd_queues)
11153 {
11154 struct sk_buff *msg;
11155 void *hdr;
11156
11157 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11158 if (!msg)
11159 return;
11160
11161 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11162 if (!hdr) {
11163 nlmsg_free(msg);
11164 return;
11165 }
11166
11167 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11168 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11169 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11170 goto nla_put_failure;
11171
11172 if (uapsd_queues >= 0) {
11173 struct nlattr *nla_wmm =
11174 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11175 if (!nla_wmm)
11176 goto nla_put_failure;
11177
11178 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11179 uapsd_queues))
11180 goto nla_put_failure;
11181
11182 nla_nest_end(msg, nla_wmm);
11183 }
11184
11185 genlmsg_end(msg, hdr);
11186
11187 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11188 NL80211_MCGRP_MLME, gfp);
11189 return;
11190
11191 nla_put_failure:
11192 genlmsg_cancel(msg, hdr);
11193 nlmsg_free(msg);
11194 }
11195
11196 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11197 struct net_device *netdev, const u8 *buf,
11198 size_t len, gfp_t gfp)
11199 {
11200 nl80211_send_mlme_event(rdev, netdev, buf, len,
11201 NL80211_CMD_AUTHENTICATE, gfp, -1);
11202 }
11203
11204 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11205 struct net_device *netdev, const u8 *buf,
11206 size_t len, gfp_t gfp, int uapsd_queues)
11207 {
11208 nl80211_send_mlme_event(rdev, netdev, buf, len,
11209 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11210 }
11211
11212 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11213 struct net_device *netdev, const u8 *buf,
11214 size_t len, gfp_t gfp)
11215 {
11216 nl80211_send_mlme_event(rdev, netdev, buf, len,
11217 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11218 }
11219
11220 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11221 struct net_device *netdev, const u8 *buf,
11222 size_t len, gfp_t gfp)
11223 {
11224 nl80211_send_mlme_event(rdev, netdev, buf, len,
11225 NL80211_CMD_DISASSOCIATE, gfp, -1);
11226 }
11227
11228 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11229 size_t len)
11230 {
11231 struct wireless_dev *wdev = dev->ieee80211_ptr;
11232 struct wiphy *wiphy = wdev->wiphy;
11233 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11234 const struct ieee80211_mgmt *mgmt = (void *)buf;
11235 u32 cmd;
11236
11237 if (WARN_ON(len < 2))
11238 return;
11239
11240 if (ieee80211_is_deauth(mgmt->frame_control))
11241 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11242 else
11243 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11244
11245 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11246 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11247 }
11248 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11249
11250 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11251 struct net_device *netdev, int cmd,
11252 const u8 *addr, gfp_t gfp)
11253 {
11254 struct sk_buff *msg;
11255 void *hdr;
11256
11257 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11258 if (!msg)
11259 return;
11260
11261 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11262 if (!hdr) {
11263 nlmsg_free(msg);
11264 return;
11265 }
11266
11267 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11268 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11269 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11270 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11271 goto nla_put_failure;
11272
11273 genlmsg_end(msg, hdr);
11274
11275 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11276 NL80211_MCGRP_MLME, gfp);
11277 return;
11278
11279 nla_put_failure:
11280 genlmsg_cancel(msg, hdr);
11281 nlmsg_free(msg);
11282 }
11283
11284 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11285 struct net_device *netdev, const u8 *addr,
11286 gfp_t gfp)
11287 {
11288 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11289 addr, gfp);
11290 }
11291
11292 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11293 struct net_device *netdev, const u8 *addr,
11294 gfp_t gfp)
11295 {
11296 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11297 addr, gfp);
11298 }
11299
11300 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11301 struct net_device *netdev, const u8 *bssid,
11302 const u8 *req_ie, size_t req_ie_len,
11303 const u8 *resp_ie, size_t resp_ie_len,
11304 u16 status, gfp_t gfp)
11305 {
11306 struct sk_buff *msg;
11307 void *hdr;
11308
11309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11310 if (!msg)
11311 return;
11312
11313 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11314 if (!hdr) {
11315 nlmsg_free(msg);
11316 return;
11317 }
11318
11319 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11320 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11321 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11322 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11323 (req_ie &&
11324 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11325 (resp_ie &&
11326 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11327 goto nla_put_failure;
11328
11329 genlmsg_end(msg, hdr);
11330
11331 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11332 NL80211_MCGRP_MLME, gfp);
11333 return;
11334
11335 nla_put_failure:
11336 genlmsg_cancel(msg, hdr);
11337 nlmsg_free(msg);
11338
11339 }
11340
11341 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11342 struct net_device *netdev, const u8 *bssid,
11343 const u8 *req_ie, size_t req_ie_len,
11344 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11345 {
11346 struct sk_buff *msg;
11347 void *hdr;
11348
11349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11350 if (!msg)
11351 return;
11352
11353 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11354 if (!hdr) {
11355 nlmsg_free(msg);
11356 return;
11357 }
11358
11359 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11360 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11361 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11362 (req_ie &&
11363 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11364 (resp_ie &&
11365 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11366 goto nla_put_failure;
11367
11368 genlmsg_end(msg, hdr);
11369
11370 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11371 NL80211_MCGRP_MLME, gfp);
11372 return;
11373
11374 nla_put_failure:
11375 genlmsg_cancel(msg, hdr);
11376 nlmsg_free(msg);
11377
11378 }
11379
11380 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11381 struct net_device *netdev, u16 reason,
11382 const u8 *ie, size_t ie_len, bool from_ap)
11383 {
11384 struct sk_buff *msg;
11385 void *hdr;
11386
11387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11388 if (!msg)
11389 return;
11390
11391 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11392 if (!hdr) {
11393 nlmsg_free(msg);
11394 return;
11395 }
11396
11397 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11398 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11399 (from_ap && reason &&
11400 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11401 (from_ap &&
11402 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11403 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11404 goto nla_put_failure;
11405
11406 genlmsg_end(msg, hdr);
11407
11408 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11409 NL80211_MCGRP_MLME, GFP_KERNEL);
11410 return;
11411
11412 nla_put_failure:
11413 genlmsg_cancel(msg, hdr);
11414 nlmsg_free(msg);
11415
11416 }
11417
11418 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11419 struct net_device *netdev, const u8 *bssid,
11420 gfp_t gfp)
11421 {
11422 struct sk_buff *msg;
11423 void *hdr;
11424
11425 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11426 if (!msg)
11427 return;
11428
11429 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11430 if (!hdr) {
11431 nlmsg_free(msg);
11432 return;
11433 }
11434
11435 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11436 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11437 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11438 goto nla_put_failure;
11439
11440 genlmsg_end(msg, hdr);
11441
11442 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11443 NL80211_MCGRP_MLME, gfp);
11444 return;
11445
11446 nla_put_failure:
11447 genlmsg_cancel(msg, hdr);
11448 nlmsg_free(msg);
11449 }
11450
11451 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11452 const u8* ie, u8 ie_len, gfp_t gfp)
11453 {
11454 struct wireless_dev *wdev = dev->ieee80211_ptr;
11455 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11456 struct sk_buff *msg;
11457 void *hdr;
11458
11459 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11460 return;
11461
11462 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11463
11464 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11465 if (!msg)
11466 return;
11467
11468 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11469 if (!hdr) {
11470 nlmsg_free(msg);
11471 return;
11472 }
11473
11474 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11475 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11476 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11477 (ie_len && ie &&
11478 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11479 goto nla_put_failure;
11480
11481 genlmsg_end(msg, hdr);
11482
11483 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11484 NL80211_MCGRP_MLME, gfp);
11485 return;
11486
11487 nla_put_failure:
11488 genlmsg_cancel(msg, hdr);
11489 nlmsg_free(msg);
11490 }
11491 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11492
11493 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11494 struct net_device *netdev, const u8 *addr,
11495 enum nl80211_key_type key_type, int key_id,
11496 const u8 *tsc, gfp_t gfp)
11497 {
11498 struct sk_buff *msg;
11499 void *hdr;
11500
11501 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11502 if (!msg)
11503 return;
11504
11505 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11506 if (!hdr) {
11507 nlmsg_free(msg);
11508 return;
11509 }
11510
11511 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11512 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11513 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11514 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11515 (key_id != -1 &&
11516 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11517 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11518 goto nla_put_failure;
11519
11520 genlmsg_end(msg, hdr);
11521
11522 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11523 NL80211_MCGRP_MLME, gfp);
11524 return;
11525
11526 nla_put_failure:
11527 genlmsg_cancel(msg, hdr);
11528 nlmsg_free(msg);
11529 }
11530
11531 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11532 struct ieee80211_channel *channel_before,
11533 struct ieee80211_channel *channel_after)
11534 {
11535 struct sk_buff *msg;
11536 void *hdr;
11537 struct nlattr *nl_freq;
11538
11539 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11540 if (!msg)
11541 return;
11542
11543 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11544 if (!hdr) {
11545 nlmsg_free(msg);
11546 return;
11547 }
11548
11549 /*
11550 * Since we are applying the beacon hint to a wiphy we know its
11551 * wiphy_idx is valid
11552 */
11553 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11554 goto nla_put_failure;
11555
11556 /* Before */
11557 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11558 if (!nl_freq)
11559 goto nla_put_failure;
11560 if (nl80211_msg_put_channel(msg, channel_before, false))
11561 goto nla_put_failure;
11562 nla_nest_end(msg, nl_freq);
11563
11564 /* After */
11565 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11566 if (!nl_freq)
11567 goto nla_put_failure;
11568 if (nl80211_msg_put_channel(msg, channel_after, false))
11569 goto nla_put_failure;
11570 nla_nest_end(msg, nl_freq);
11571
11572 genlmsg_end(msg, hdr);
11573
11574 rcu_read_lock();
11575 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11576 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11577 rcu_read_unlock();
11578
11579 return;
11580
11581 nla_put_failure:
11582 genlmsg_cancel(msg, hdr);
11583 nlmsg_free(msg);
11584 }
11585
11586 static void nl80211_send_remain_on_chan_event(
11587 int cmd, struct cfg80211_registered_device *rdev,
11588 struct wireless_dev *wdev, u64 cookie,
11589 struct ieee80211_channel *chan,
11590 unsigned int duration, gfp_t gfp)
11591 {
11592 struct sk_buff *msg;
11593 void *hdr;
11594
11595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11596 if (!msg)
11597 return;
11598
11599 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11600 if (!hdr) {
11601 nlmsg_free(msg);
11602 return;
11603 }
11604
11605 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11606 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11607 wdev->netdev->ifindex)) ||
11608 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11609 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11610 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11611 NL80211_CHAN_NO_HT) ||
11612 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11613 goto nla_put_failure;
11614
11615 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11616 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11617 goto nla_put_failure;
11618
11619 genlmsg_end(msg, hdr);
11620
11621 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11622 NL80211_MCGRP_MLME, gfp);
11623 return;
11624
11625 nla_put_failure:
11626 genlmsg_cancel(msg, hdr);
11627 nlmsg_free(msg);
11628 }
11629
11630 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11631 struct ieee80211_channel *chan,
11632 unsigned int duration, gfp_t gfp)
11633 {
11634 struct wiphy *wiphy = wdev->wiphy;
11635 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11636
11637 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11638 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11639 rdev, wdev, cookie, chan,
11640 duration, gfp);
11641 }
11642 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11643
11644 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11645 struct ieee80211_channel *chan,
11646 gfp_t gfp)
11647 {
11648 struct wiphy *wiphy = wdev->wiphy;
11649 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11650
11651 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11652 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11653 rdev, wdev, cookie, chan, 0, gfp);
11654 }
11655 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11656
11657 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11658 struct station_info *sinfo, gfp_t gfp)
11659 {
11660 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11661 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11662 struct sk_buff *msg;
11663
11664 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11665
11666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11667 if (!msg)
11668 return;
11669
11670 if (nl80211_send_station(msg, 0, 0, 0,
11671 rdev, dev, mac_addr, sinfo) < 0) {
11672 nlmsg_free(msg);
11673 return;
11674 }
11675
11676 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11677 NL80211_MCGRP_MLME, gfp);
11678 }
11679 EXPORT_SYMBOL(cfg80211_new_sta);
11680
11681 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11682 {
11683 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11684 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11685 struct sk_buff *msg;
11686 void *hdr;
11687
11688 trace_cfg80211_del_sta(dev, mac_addr);
11689
11690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11691 if (!msg)
11692 return;
11693
11694 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11695 if (!hdr) {
11696 nlmsg_free(msg);
11697 return;
11698 }
11699
11700 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11701 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11702 goto nla_put_failure;
11703
11704 genlmsg_end(msg, hdr);
11705
11706 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11707 NL80211_MCGRP_MLME, gfp);
11708 return;
11709
11710 nla_put_failure:
11711 genlmsg_cancel(msg, hdr);
11712 nlmsg_free(msg);
11713 }
11714 EXPORT_SYMBOL(cfg80211_del_sta);
11715
11716 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11717 enum nl80211_connect_failed_reason reason,
11718 gfp_t gfp)
11719 {
11720 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11721 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11722 struct sk_buff *msg;
11723 void *hdr;
11724
11725 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11726 if (!msg)
11727 return;
11728
11729 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11730 if (!hdr) {
11731 nlmsg_free(msg);
11732 return;
11733 }
11734
11735 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11736 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11737 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11738 goto nla_put_failure;
11739
11740 genlmsg_end(msg, hdr);
11741
11742 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11743 NL80211_MCGRP_MLME, gfp);
11744 return;
11745
11746 nla_put_failure:
11747 genlmsg_cancel(msg, hdr);
11748 nlmsg_free(msg);
11749 }
11750 EXPORT_SYMBOL(cfg80211_conn_failed);
11751
11752 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11753 const u8 *addr, gfp_t gfp)
11754 {
11755 struct wireless_dev *wdev = dev->ieee80211_ptr;
11756 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11757 struct sk_buff *msg;
11758 void *hdr;
11759 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11760
11761 if (!nlportid)
11762 return false;
11763
11764 msg = nlmsg_new(100, gfp);
11765 if (!msg)
11766 return true;
11767
11768 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11769 if (!hdr) {
11770 nlmsg_free(msg);
11771 return true;
11772 }
11773
11774 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11775 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11776 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11777 goto nla_put_failure;
11778
11779 genlmsg_end(msg, hdr);
11780 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11781 return true;
11782
11783 nla_put_failure:
11784 genlmsg_cancel(msg, hdr);
11785 nlmsg_free(msg);
11786 return true;
11787 }
11788
11789 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11790 const u8 *addr, gfp_t gfp)
11791 {
11792 struct wireless_dev *wdev = dev->ieee80211_ptr;
11793 bool ret;
11794
11795 trace_cfg80211_rx_spurious_frame(dev, addr);
11796
11797 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11798 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11799 trace_cfg80211_return_bool(false);
11800 return false;
11801 }
11802 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11803 addr, gfp);
11804 trace_cfg80211_return_bool(ret);
11805 return ret;
11806 }
11807 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11808
11809 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11810 const u8 *addr, gfp_t gfp)
11811 {
11812 struct wireless_dev *wdev = dev->ieee80211_ptr;
11813 bool ret;
11814
11815 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11816
11817 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11818 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11819 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11820 trace_cfg80211_return_bool(false);
11821 return false;
11822 }
11823 ret = __nl80211_unexpected_frame(dev,
11824 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11825 addr, gfp);
11826 trace_cfg80211_return_bool(ret);
11827 return ret;
11828 }
11829 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11830
11831 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11832 struct wireless_dev *wdev, u32 nlportid,
11833 int freq, int sig_dbm,
11834 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11835 {
11836 struct net_device *netdev = wdev->netdev;
11837 struct sk_buff *msg;
11838 void *hdr;
11839
11840 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11841 if (!msg)
11842 return -ENOMEM;
11843
11844 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11845 if (!hdr) {
11846 nlmsg_free(msg);
11847 return -ENOMEM;
11848 }
11849
11850 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11851 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11852 netdev->ifindex)) ||
11853 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11854 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11855 (sig_dbm &&
11856 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11857 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11858 (flags &&
11859 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11860 goto nla_put_failure;
11861
11862 genlmsg_end(msg, hdr);
11863
11864 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11865
11866 nla_put_failure:
11867 genlmsg_cancel(msg, hdr);
11868 nlmsg_free(msg);
11869 return -ENOBUFS;
11870 }
11871
11872 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11873 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11874 {
11875 struct wiphy *wiphy = wdev->wiphy;
11876 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11877 struct net_device *netdev = wdev->netdev;
11878 struct sk_buff *msg;
11879 void *hdr;
11880
11881 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11882
11883 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11884 if (!msg)
11885 return;
11886
11887 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11888 if (!hdr) {
11889 nlmsg_free(msg);
11890 return;
11891 }
11892
11893 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11894 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11895 netdev->ifindex)) ||
11896 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11897 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11898 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11899 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11900 goto nla_put_failure;
11901
11902 genlmsg_end(msg, hdr);
11903
11904 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11905 NL80211_MCGRP_MLME, gfp);
11906 return;
11907
11908 nla_put_failure:
11909 genlmsg_cancel(msg, hdr);
11910 nlmsg_free(msg);
11911 }
11912 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11913
11914 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11915 const char *mac, gfp_t gfp)
11916 {
11917 struct wireless_dev *wdev = dev->ieee80211_ptr;
11918 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11919 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11920 void **cb;
11921
11922 if (!msg)
11923 return NULL;
11924
11925 cb = (void **)msg->cb;
11926
11927 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11928 if (!cb[0]) {
11929 nlmsg_free(msg);
11930 return NULL;
11931 }
11932
11933 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11934 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11935 goto nla_put_failure;
11936
11937 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11938 goto nla_put_failure;
11939
11940 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11941 if (!cb[1])
11942 goto nla_put_failure;
11943
11944 cb[2] = rdev;
11945
11946 return msg;
11947 nla_put_failure:
11948 nlmsg_free(msg);
11949 return NULL;
11950 }
11951
11952 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11953 {
11954 void **cb = (void **)msg->cb;
11955 struct cfg80211_registered_device *rdev = cb[2];
11956
11957 nla_nest_end(msg, cb[1]);
11958 genlmsg_end(msg, cb[0]);
11959
11960 memset(msg->cb, 0, sizeof(msg->cb));
11961
11962 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11963 NL80211_MCGRP_MLME, gfp);
11964 }
11965
11966 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11967 enum nl80211_cqm_rssi_threshold_event rssi_event,
11968 gfp_t gfp)
11969 {
11970 struct sk_buff *msg;
11971
11972 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11973
11974 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11975 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11976 return;
11977
11978 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11979 if (!msg)
11980 return;
11981
11982 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11983 rssi_event))
11984 goto nla_put_failure;
11985
11986 cfg80211_send_cqm(msg, gfp);
11987
11988 return;
11989
11990 nla_put_failure:
11991 nlmsg_free(msg);
11992 }
11993 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11994
11995 void cfg80211_cqm_txe_notify(struct net_device *dev,
11996 const u8 *peer, u32 num_packets,
11997 u32 rate, u32 intvl, gfp_t gfp)
11998 {
11999 struct sk_buff *msg;
12000
12001 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12002 if (!msg)
12003 return;
12004
12005 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12006 goto nla_put_failure;
12007
12008 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12009 goto nla_put_failure;
12010
12011 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12012 goto nla_put_failure;
12013
12014 cfg80211_send_cqm(msg, gfp);
12015 return;
12016
12017 nla_put_failure:
12018 nlmsg_free(msg);
12019 }
12020 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12021
12022 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12023 const u8 *peer, u32 num_packets, gfp_t gfp)
12024 {
12025 struct sk_buff *msg;
12026
12027 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12028
12029 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12030 if (!msg)
12031 return;
12032
12033 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12034 goto nla_put_failure;
12035
12036 cfg80211_send_cqm(msg, gfp);
12037 return;
12038
12039 nla_put_failure:
12040 nlmsg_free(msg);
12041 }
12042 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12043
12044 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12045 {
12046 struct sk_buff *msg;
12047
12048 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12049 if (!msg)
12050 return;
12051
12052 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12053 goto nla_put_failure;
12054
12055 cfg80211_send_cqm(msg, gfp);
12056 return;
12057
12058 nla_put_failure:
12059 nlmsg_free(msg);
12060 }
12061 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12062
12063 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12064 struct net_device *netdev, const u8 *bssid,
12065 const u8 *replay_ctr, gfp_t gfp)
12066 {
12067 struct sk_buff *msg;
12068 struct nlattr *rekey_attr;
12069 void *hdr;
12070
12071 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12072 if (!msg)
12073 return;
12074
12075 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12076 if (!hdr) {
12077 nlmsg_free(msg);
12078 return;
12079 }
12080
12081 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12082 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12083 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12084 goto nla_put_failure;
12085
12086 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12087 if (!rekey_attr)
12088 goto nla_put_failure;
12089
12090 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12091 NL80211_REPLAY_CTR_LEN, replay_ctr))
12092 goto nla_put_failure;
12093
12094 nla_nest_end(msg, rekey_attr);
12095
12096 genlmsg_end(msg, hdr);
12097
12098 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12099 NL80211_MCGRP_MLME, gfp);
12100 return;
12101
12102 nla_put_failure:
12103 genlmsg_cancel(msg, hdr);
12104 nlmsg_free(msg);
12105 }
12106
12107 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12108 const u8 *replay_ctr, gfp_t gfp)
12109 {
12110 struct wireless_dev *wdev = dev->ieee80211_ptr;
12111 struct wiphy *wiphy = wdev->wiphy;
12112 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12113
12114 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12115 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12116 }
12117 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12118
12119 static void
12120 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12121 struct net_device *netdev, int index,
12122 const u8 *bssid, bool preauth, gfp_t gfp)
12123 {
12124 struct sk_buff *msg;
12125 struct nlattr *attr;
12126 void *hdr;
12127
12128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12129 if (!msg)
12130 return;
12131
12132 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12133 if (!hdr) {
12134 nlmsg_free(msg);
12135 return;
12136 }
12137
12138 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12139 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12140 goto nla_put_failure;
12141
12142 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12143 if (!attr)
12144 goto nla_put_failure;
12145
12146 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12147 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12148 (preauth &&
12149 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12150 goto nla_put_failure;
12151
12152 nla_nest_end(msg, attr);
12153
12154 genlmsg_end(msg, hdr);
12155
12156 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12157 NL80211_MCGRP_MLME, gfp);
12158 return;
12159
12160 nla_put_failure:
12161 genlmsg_cancel(msg, hdr);
12162 nlmsg_free(msg);
12163 }
12164
12165 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12166 const u8 *bssid, bool preauth, gfp_t gfp)
12167 {
12168 struct wireless_dev *wdev = dev->ieee80211_ptr;
12169 struct wiphy *wiphy = wdev->wiphy;
12170 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12171
12172 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12173 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12174 }
12175 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12176
12177 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12178 struct net_device *netdev,
12179 struct cfg80211_chan_def *chandef,
12180 gfp_t gfp,
12181 enum nl80211_commands notif,
12182 u8 count)
12183 {
12184 struct sk_buff *msg;
12185 void *hdr;
12186
12187 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12188 if (!msg)
12189 return;
12190
12191 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12192 if (!hdr) {
12193 nlmsg_free(msg);
12194 return;
12195 }
12196
12197 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12198 goto nla_put_failure;
12199
12200 if (nl80211_send_chandef(msg, chandef))
12201 goto nla_put_failure;
12202
12203 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12204 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12205 goto nla_put_failure;
12206
12207 genlmsg_end(msg, hdr);
12208
12209 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12210 NL80211_MCGRP_MLME, gfp);
12211 return;
12212
12213 nla_put_failure:
12214 genlmsg_cancel(msg, hdr);
12215 nlmsg_free(msg);
12216 }
12217
12218 void cfg80211_ch_switch_notify(struct net_device *dev,
12219 struct cfg80211_chan_def *chandef)
12220 {
12221 struct wireless_dev *wdev = dev->ieee80211_ptr;
12222 struct wiphy *wiphy = wdev->wiphy;
12223 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12224
12225 ASSERT_WDEV_LOCK(wdev);
12226
12227 trace_cfg80211_ch_switch_notify(dev, chandef);
12228
12229 wdev->chandef = *chandef;
12230 wdev->preset_chandef = *chandef;
12231 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12232 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12233 }
12234 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12235
12236 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12237 struct cfg80211_chan_def *chandef,
12238 u8 count)
12239 {
12240 struct wireless_dev *wdev = dev->ieee80211_ptr;
12241 struct wiphy *wiphy = wdev->wiphy;
12242 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12243
12244 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12245
12246 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12247 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12248 }
12249 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12250
12251 void
12252 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12253 const struct cfg80211_chan_def *chandef,
12254 enum nl80211_radar_event event,
12255 struct net_device *netdev, gfp_t gfp)
12256 {
12257 struct sk_buff *msg;
12258 void *hdr;
12259
12260 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12261 if (!msg)
12262 return;
12263
12264 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12265 if (!hdr) {
12266 nlmsg_free(msg);
12267 return;
12268 }
12269
12270 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12271 goto nla_put_failure;
12272
12273 /* NOP and radar events don't need a netdev parameter */
12274 if (netdev) {
12275 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12276
12277 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12278 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12279 goto nla_put_failure;
12280 }
12281
12282 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12283 goto nla_put_failure;
12284
12285 if (nl80211_send_chandef(msg, chandef))
12286 goto nla_put_failure;
12287
12288 genlmsg_end(msg, hdr);
12289
12290 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12291 NL80211_MCGRP_MLME, gfp);
12292 return;
12293
12294 nla_put_failure:
12295 genlmsg_cancel(msg, hdr);
12296 nlmsg_free(msg);
12297 }
12298
12299 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12300 u64 cookie, bool acked, gfp_t gfp)
12301 {
12302 struct wireless_dev *wdev = dev->ieee80211_ptr;
12303 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12304 struct sk_buff *msg;
12305 void *hdr;
12306
12307 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12308
12309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12310
12311 if (!msg)
12312 return;
12313
12314 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12315 if (!hdr) {
12316 nlmsg_free(msg);
12317 return;
12318 }
12319
12320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12321 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12322 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12323 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12324 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12325 goto nla_put_failure;
12326
12327 genlmsg_end(msg, hdr);
12328
12329 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12330 NL80211_MCGRP_MLME, gfp);
12331 return;
12332
12333 nla_put_failure:
12334 genlmsg_cancel(msg, hdr);
12335 nlmsg_free(msg);
12336 }
12337 EXPORT_SYMBOL(cfg80211_probe_status);
12338
12339 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12340 const u8 *frame, size_t len,
12341 int freq, int sig_dbm)
12342 {
12343 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12344 struct sk_buff *msg;
12345 void *hdr;
12346 struct cfg80211_beacon_registration *reg;
12347
12348 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12349
12350 spin_lock_bh(&rdev->beacon_registrations_lock);
12351 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12352 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12353 if (!msg) {
12354 spin_unlock_bh(&rdev->beacon_registrations_lock);
12355 return;
12356 }
12357
12358 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12359 if (!hdr)
12360 goto nla_put_failure;
12361
12362 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12363 (freq &&
12364 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12365 (sig_dbm &&
12366 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12367 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12368 goto nla_put_failure;
12369
12370 genlmsg_end(msg, hdr);
12371
12372 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12373 }
12374 spin_unlock_bh(&rdev->beacon_registrations_lock);
12375 return;
12376
12377 nla_put_failure:
12378 spin_unlock_bh(&rdev->beacon_registrations_lock);
12379 if (hdr)
12380 genlmsg_cancel(msg, hdr);
12381 nlmsg_free(msg);
12382 }
12383 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12384
12385 #ifdef CONFIG_PM
12386 static int cfg80211_net_detect_results(struct sk_buff *msg,
12387 struct cfg80211_wowlan_wakeup *wakeup)
12388 {
12389 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12390 struct nlattr *nl_results, *nl_match, *nl_freqs;
12391 int i, j;
12392
12393 nl_results = nla_nest_start(
12394 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12395 if (!nl_results)
12396 return -EMSGSIZE;
12397
12398 for (i = 0; i < nd->n_matches; i++) {
12399 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12400
12401 nl_match = nla_nest_start(msg, i);
12402 if (!nl_match)
12403 break;
12404
12405 /* The SSID attribute is optional in nl80211, but for
12406 * simplicity reasons it's always present in the
12407 * cfg80211 structure. If a driver can't pass the
12408 * SSID, that needs to be changed. A zero length SSID
12409 * is still a valid SSID (wildcard), so it cannot be
12410 * used for this purpose.
12411 */
12412 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12413 match->ssid.ssid)) {
12414 nla_nest_cancel(msg, nl_match);
12415 goto out;
12416 }
12417
12418 if (match->n_channels) {
12419 nl_freqs = nla_nest_start(
12420 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12421 if (!nl_freqs) {
12422 nla_nest_cancel(msg, nl_match);
12423 goto out;
12424 }
12425
12426 for (j = 0; j < match->n_channels; j++) {
12427 if (nla_put_u32(msg,
12428 NL80211_ATTR_WIPHY_FREQ,
12429 match->channels[j])) {
12430 nla_nest_cancel(msg, nl_freqs);
12431 nla_nest_cancel(msg, nl_match);
12432 goto out;
12433 }
12434 }
12435
12436 nla_nest_end(msg, nl_freqs);
12437 }
12438
12439 nla_nest_end(msg, nl_match);
12440 }
12441
12442 out:
12443 nla_nest_end(msg, nl_results);
12444 return 0;
12445 }
12446
12447 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12448 struct cfg80211_wowlan_wakeup *wakeup,
12449 gfp_t gfp)
12450 {
12451 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12452 struct sk_buff *msg;
12453 void *hdr;
12454 int size = 200;
12455
12456 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12457
12458 if (wakeup)
12459 size += wakeup->packet_present_len;
12460
12461 msg = nlmsg_new(size, gfp);
12462 if (!msg)
12463 return;
12464
12465 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12466 if (!hdr)
12467 goto free_msg;
12468
12469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12470 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12471 goto free_msg;
12472
12473 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12474 wdev->netdev->ifindex))
12475 goto free_msg;
12476
12477 if (wakeup) {
12478 struct nlattr *reasons;
12479
12480 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12481 if (!reasons)
12482 goto free_msg;
12483
12484 if (wakeup->disconnect &&
12485 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12486 goto free_msg;
12487 if (wakeup->magic_pkt &&
12488 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12489 goto free_msg;
12490 if (wakeup->gtk_rekey_failure &&
12491 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12492 goto free_msg;
12493 if (wakeup->eap_identity_req &&
12494 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12495 goto free_msg;
12496 if (wakeup->four_way_handshake &&
12497 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12498 goto free_msg;
12499 if (wakeup->rfkill_release &&
12500 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12501 goto free_msg;
12502
12503 if (wakeup->pattern_idx >= 0 &&
12504 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12505 wakeup->pattern_idx))
12506 goto free_msg;
12507
12508 if (wakeup->tcp_match &&
12509 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12510 goto free_msg;
12511
12512 if (wakeup->tcp_connlost &&
12513 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12514 goto free_msg;
12515
12516 if (wakeup->tcp_nomoretokens &&
12517 nla_put_flag(msg,
12518 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12519 goto free_msg;
12520
12521 if (wakeup->packet) {
12522 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12523 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12524
12525 if (!wakeup->packet_80211) {
12526 pkt_attr =
12527 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12528 len_attr =
12529 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12530 }
12531
12532 if (wakeup->packet_len &&
12533 nla_put_u32(msg, len_attr, wakeup->packet_len))
12534 goto free_msg;
12535
12536 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12537 wakeup->packet))
12538 goto free_msg;
12539 }
12540
12541 if (wakeup->net_detect &&
12542 cfg80211_net_detect_results(msg, wakeup))
12543 goto free_msg;
12544
12545 nla_nest_end(msg, reasons);
12546 }
12547
12548 genlmsg_end(msg, hdr);
12549
12550 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12551 NL80211_MCGRP_MLME, gfp);
12552 return;
12553
12554 free_msg:
12555 nlmsg_free(msg);
12556 }
12557 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12558 #endif
12559
12560 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12561 enum nl80211_tdls_operation oper,
12562 u16 reason_code, gfp_t gfp)
12563 {
12564 struct wireless_dev *wdev = dev->ieee80211_ptr;
12565 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12566 struct sk_buff *msg;
12567 void *hdr;
12568
12569 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12570 reason_code);
12571
12572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12573 if (!msg)
12574 return;
12575
12576 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12577 if (!hdr) {
12578 nlmsg_free(msg);
12579 return;
12580 }
12581
12582 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12583 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12584 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12585 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12586 (reason_code > 0 &&
12587 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12588 goto nla_put_failure;
12589
12590 genlmsg_end(msg, hdr);
12591
12592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12593 NL80211_MCGRP_MLME, gfp);
12594 return;
12595
12596 nla_put_failure:
12597 genlmsg_cancel(msg, hdr);
12598 nlmsg_free(msg);
12599 }
12600 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12601
12602 static int nl80211_netlink_notify(struct notifier_block * nb,
12603 unsigned long state,
12604 void *_notify)
12605 {
12606 struct netlink_notify *notify = _notify;
12607 struct cfg80211_registered_device *rdev;
12608 struct wireless_dev *wdev;
12609 struct cfg80211_beacon_registration *reg, *tmp;
12610
12611 if (state != NETLINK_URELEASE)
12612 return NOTIFY_DONE;
12613
12614 rcu_read_lock();
12615
12616 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12617 bool schedule_destroy_work = false;
12618
12619 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12620 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12621
12622 if (wdev->owner_nlportid == notify->portid)
12623 schedule_destroy_work = true;
12624 }
12625
12626 spin_lock_bh(&rdev->beacon_registrations_lock);
12627 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12628 list) {
12629 if (reg->nlportid == notify->portid) {
12630 list_del(&reg->list);
12631 kfree(reg);
12632 break;
12633 }
12634 }
12635 spin_unlock_bh(&rdev->beacon_registrations_lock);
12636
12637 if (schedule_destroy_work) {
12638 struct cfg80211_iface_destroy *destroy;
12639
12640 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12641 if (destroy) {
12642 destroy->nlportid = notify->portid;
12643 spin_lock(&rdev->destroy_list_lock);
12644 list_add(&destroy->list, &rdev->destroy_list);
12645 spin_unlock(&rdev->destroy_list_lock);
12646 schedule_work(&rdev->destroy_work);
12647 }
12648 }
12649 }
12650
12651 rcu_read_unlock();
12652
12653 return NOTIFY_OK;
12654 }
12655
12656 static struct notifier_block nl80211_netlink_notifier = {
12657 .notifier_call = nl80211_netlink_notify,
12658 };
12659
12660 void cfg80211_ft_event(struct net_device *netdev,
12661 struct cfg80211_ft_event_params *ft_event)
12662 {
12663 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12665 struct sk_buff *msg;
12666 void *hdr;
12667
12668 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12669
12670 if (!ft_event->target_ap)
12671 return;
12672
12673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12674 if (!msg)
12675 return;
12676
12677 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12678 if (!hdr)
12679 goto out;
12680
12681 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12682 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12683 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12684 goto out;
12685
12686 if (ft_event->ies &&
12687 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12688 goto out;
12689 if (ft_event->ric_ies &&
12690 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12691 ft_event->ric_ies))
12692 goto out;
12693
12694 genlmsg_end(msg, hdr);
12695
12696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12697 NL80211_MCGRP_MLME, GFP_KERNEL);
12698 return;
12699 out:
12700 nlmsg_free(msg);
12701 }
12702 EXPORT_SYMBOL(cfg80211_ft_event);
12703
12704 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12705 {
12706 struct cfg80211_registered_device *rdev;
12707 struct sk_buff *msg;
12708 void *hdr;
12709 u32 nlportid;
12710
12711 rdev = wiphy_to_rdev(wdev->wiphy);
12712 if (!rdev->crit_proto_nlportid)
12713 return;
12714
12715 nlportid = rdev->crit_proto_nlportid;
12716 rdev->crit_proto_nlportid = 0;
12717
12718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12719 if (!msg)
12720 return;
12721
12722 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12723 if (!hdr)
12724 goto nla_put_failure;
12725
12726 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12727 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12728 goto nla_put_failure;
12729
12730 genlmsg_end(msg, hdr);
12731
12732 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12733 return;
12734
12735 nla_put_failure:
12736 if (hdr)
12737 genlmsg_cancel(msg, hdr);
12738 nlmsg_free(msg);
12739
12740 }
12741 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12742
12743 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12744 {
12745 struct wiphy *wiphy = wdev->wiphy;
12746 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12747 struct sk_buff *msg;
12748 void *hdr;
12749
12750 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12751 if (!msg)
12752 return;
12753
12754 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12755 if (!hdr)
12756 goto out;
12757
12758 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12759 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12760 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12761 goto out;
12762
12763 genlmsg_end(msg, hdr);
12764
12765 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12766 NL80211_MCGRP_MLME, GFP_KERNEL);
12767 return;
12768 out:
12769 nlmsg_free(msg);
12770 }
12771
12772 /* initialisation/exit functions */
12773
12774 int nl80211_init(void)
12775 {
12776 int err;
12777
12778 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12779 nl80211_mcgrps);
12780 if (err)
12781 return err;
12782
12783 err = netlink_register_notifier(&nl80211_netlink_notifier);
12784 if (err)
12785 goto err_out;
12786
12787 return 0;
12788 err_out:
12789 genl_unregister_family(&nl80211_fam);
12790 return err;
12791 }
12792
12793 void nl80211_exit(void)
12794 {
12795 netlink_unregister_notifier(&nl80211_netlink_notifier);
12796 genl_unregister_family(&nl80211_fam);
12797 }
Linux kernel - Deliverables
This page took 0.283911 seconds and 6 git commands to generate.