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cfg80211: aggregate mgmt_tx parameters into a struct
[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 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* returns ERR_PTR values */
51 static struct wireless_dev *
52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53 {
54 struct cfg80211_registered_device *rdev;
55 struct wireless_dev *result = NULL;
56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
58 u64 wdev_id;
59 int wiphy_idx = -1;
60 int ifidx = -1;
61
62 ASSERT_RTNL();
63
64 if (!have_ifidx && !have_wdev_id)
65 return ERR_PTR(-EINVAL);
66
67 if (have_ifidx)
68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
69 if (have_wdev_id) {
70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
71 wiphy_idx = wdev_id >> 32;
72 }
73
74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
75 struct wireless_dev *wdev;
76
77 if (wiphy_net(&rdev->wiphy) != netns)
78 continue;
79
80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
81 continue;
82
83 list_for_each_entry(wdev, &rdev->wdev_list, list) {
84 if (have_ifidx && wdev->netdev &&
85 wdev->netdev->ifindex == ifidx) {
86 result = wdev;
87 break;
88 }
89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
90 result = wdev;
91 break;
92 }
93 }
94
95 if (result)
96 break;
97 }
98
99 if (result)
100 return result;
101 return ERR_PTR(-ENODEV);
102 }
103
104 static struct cfg80211_registered_device *
105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
106 {
107 struct cfg80211_registered_device *rdev = NULL, *tmp;
108 struct net_device *netdev;
109
110 ASSERT_RTNL();
111
112 if (!attrs[NL80211_ATTR_WIPHY] &&
113 !attrs[NL80211_ATTR_IFINDEX] &&
114 !attrs[NL80211_ATTR_WDEV])
115 return ERR_PTR(-EINVAL);
116
117 if (attrs[NL80211_ATTR_WIPHY])
118 rdev = cfg80211_rdev_by_wiphy_idx(
119 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
120
121 if (attrs[NL80211_ATTR_WDEV]) {
122 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
123 struct wireless_dev *wdev;
124 bool found = false;
125
126 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
127 if (tmp) {
128 /* make sure wdev exists */
129 list_for_each_entry(wdev, &tmp->wdev_list, list) {
130 if (wdev->identifier != (u32)wdev_id)
131 continue;
132 found = true;
133 break;
134 }
135
136 if (!found)
137 tmp = NULL;
138
139 if (rdev && tmp != rdev)
140 return ERR_PTR(-EINVAL);
141 rdev = tmp;
142 }
143 }
144
145 if (attrs[NL80211_ATTR_IFINDEX]) {
146 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
147 netdev = dev_get_by_index(netns, ifindex);
148 if (netdev) {
149 if (netdev->ieee80211_ptr)
150 tmp = wiphy_to_dev(
151 netdev->ieee80211_ptr->wiphy);
152 else
153 tmp = NULL;
154
155 dev_put(netdev);
156
157 /* not wireless device -- return error */
158 if (!tmp)
159 return ERR_PTR(-EINVAL);
160
161 /* mismatch -- return error */
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164
165 rdev = tmp;
166 }
167 }
168
169 if (!rdev)
170 return ERR_PTR(-ENODEV);
171
172 if (netns != wiphy_net(&rdev->wiphy))
173 return ERR_PTR(-ENODEV);
174
175 return rdev;
176 }
177
178 /*
179 * This function returns a pointer to the driver
180 * that the genl_info item that is passed refers to.
181 *
182 * The result of this can be a PTR_ERR and hence must
183 * be checked with IS_ERR() for errors.
184 */
185 static struct cfg80211_registered_device *
186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
187 {
188 return __cfg80211_rdev_from_attrs(netns, info->attrs);
189 }
190
191 /* policy for the attributes */
192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
193 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
194 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
195 .len = 20-1 },
196 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
197
198 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
199 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
200 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
201 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
202 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
203
204 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
205 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
206 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
207 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
208 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
209
210 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
211 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
212 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
213
214 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
215 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
216
217 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
218 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
219 .len = WLAN_MAX_KEY_LEN },
220 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
221 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
222 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
223 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
224 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
225
226 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
227 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
228 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
229 .len = IEEE80211_MAX_DATA_LEN },
230 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
231 .len = IEEE80211_MAX_DATA_LEN },
232 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
233 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
234 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
235 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
236 .len = NL80211_MAX_SUPP_RATES },
237 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
238 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
239 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
240 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
241 .len = IEEE80211_MAX_MESH_ID_LEN },
242 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
243
244 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
245 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
246
247 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
248 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
249 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
250 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
251 .len = NL80211_MAX_SUPP_RATES },
252 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
253
254 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
255 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
256
257 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
258
259 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
260 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
261 .len = IEEE80211_MAX_DATA_LEN },
262 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
263 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
264
265 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
266 .len = IEEE80211_MAX_SSID_LEN },
267 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
268 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
269 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
270 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
271 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
272 [NL80211_ATTR_STA_FLAGS2] = {
273 .len = sizeof(struct nl80211_sta_flag_update),
274 },
275 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
276 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
277 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
278 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
279 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
280 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
281 [NL80211_ATTR_PID] = { .type = NLA_U32 },
282 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
283 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
284 .len = WLAN_PMKID_LEN },
285 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
286 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
287 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
288 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_DATA_LEN },
290 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
291 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
292 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
293 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
294 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
295 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
296 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
297 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
299 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
300 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
301 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
302 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
303 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
304 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
305 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
306 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
307 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
308 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
309 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
314 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
315 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
317 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
318 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
319 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
320 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
321 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
322 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
325 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
326 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
327 .len = NL80211_HT_CAPABILITY_LEN
328 },
329 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
330 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
331 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
332 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
333 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
334 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
335 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
336 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
337 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
338 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
339 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
340 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
341 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
342 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
343 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
344 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
346 .len = NL80211_VHT_CAPABILITY_LEN,
347 },
348 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
349 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
350 .len = IEEE80211_MAX_DATA_LEN },
351 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
352 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
353 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
354 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
355 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
356 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
357 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
358 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
359 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
360 };
361
362 /* policy for the key attributes */
363 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
364 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
365 [NL80211_KEY_IDX] = { .type = NLA_U8 },
366 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
367 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
368 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
369 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
370 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
371 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
372 };
373
374 /* policy for the key default flags */
375 static const struct nla_policy
376 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
377 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
378 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
379 };
380
381 /* policy for WoWLAN attributes */
382 static const struct nla_policy
383 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
384 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
385 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
386 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
387 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
388 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
389 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
390 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
391 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
392 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
393 };
394
395 static const struct nla_policy
396 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
397 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
398 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
399 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
400 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
401 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
402 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
403 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
404 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
405 },
406 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
407 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
408 },
409 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
410 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
411 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
412 };
413
414 /* policy for coalesce rule attributes */
415 static const struct nla_policy
416 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
417 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
418 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
419 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
420 };
421
422 /* policy for GTK rekey offload attributes */
423 static const struct nla_policy
424 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
425 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
426 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
427 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
428 };
429
430 static const struct nla_policy
431 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
432 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
433 .len = IEEE80211_MAX_SSID_LEN },
434 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
435 };
436
437 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
438 struct netlink_callback *cb,
439 struct cfg80211_registered_device **rdev,
440 struct wireless_dev **wdev)
441 {
442 int err;
443
444 rtnl_lock();
445
446 if (!cb->args[0]) {
447 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
448 nl80211_fam.attrbuf, nl80211_fam.maxattr,
449 nl80211_policy);
450 if (err)
451 goto out_unlock;
452
453 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
454 nl80211_fam.attrbuf);
455 if (IS_ERR(*wdev)) {
456 err = PTR_ERR(*wdev);
457 goto out_unlock;
458 }
459 *rdev = wiphy_to_dev((*wdev)->wiphy);
460 /* 0 is the first index - add 1 to parse only once */
461 cb->args[0] = (*rdev)->wiphy_idx + 1;
462 cb->args[1] = (*wdev)->identifier;
463 } else {
464 /* subtract the 1 again here */
465 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
466 struct wireless_dev *tmp;
467
468 if (!wiphy) {
469 err = -ENODEV;
470 goto out_unlock;
471 }
472 *rdev = wiphy_to_dev(wiphy);
473 *wdev = NULL;
474
475 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
476 if (tmp->identifier == cb->args[1]) {
477 *wdev = tmp;
478 break;
479 }
480 }
481
482 if (!*wdev) {
483 err = -ENODEV;
484 goto out_unlock;
485 }
486 }
487
488 return 0;
489 out_unlock:
490 rtnl_unlock();
491 return err;
492 }
493
494 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
495 {
496 rtnl_unlock();
497 }
498
499 /* IE validation */
500 static bool is_valid_ie_attr(const struct nlattr *attr)
501 {
502 const u8 *pos;
503 int len;
504
505 if (!attr)
506 return true;
507
508 pos = nla_data(attr);
509 len = nla_len(attr);
510
511 while (len) {
512 u8 elemlen;
513
514 if (len < 2)
515 return false;
516 len -= 2;
517
518 elemlen = pos[1];
519 if (elemlen > len)
520 return false;
521
522 len -= elemlen;
523 pos += 2 + elemlen;
524 }
525
526 return true;
527 }
528
529 /* message building helper */
530 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
531 int flags, u8 cmd)
532 {
533 /* since there is no private header just add the generic one */
534 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
535 }
536
537 static int nl80211_msg_put_channel(struct sk_buff *msg,
538 struct ieee80211_channel *chan,
539 bool large)
540 {
541 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
542 chan->center_freq))
543 goto nla_put_failure;
544
545 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
546 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
547 goto nla_put_failure;
548 if (chan->flags & IEEE80211_CHAN_NO_IR) {
549 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
550 goto nla_put_failure;
551 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
552 goto nla_put_failure;
553 }
554 if (chan->flags & IEEE80211_CHAN_RADAR) {
555 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
556 goto nla_put_failure;
557 if (large) {
558 u32 time;
559
560 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
561
562 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
563 chan->dfs_state))
564 goto nla_put_failure;
565 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
566 time))
567 goto nla_put_failure;
568 }
569 }
570
571 if (large) {
572 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
574 goto nla_put_failure;
575 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
577 goto nla_put_failure;
578 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
580 goto nla_put_failure;
581 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
582 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
583 goto nla_put_failure;
584 }
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
587 DBM_TO_MBM(chan->max_power)))
588 goto nla_put_failure;
589
590 return 0;
591
592 nla_put_failure:
593 return -ENOBUFS;
594 }
595
596 /* netlink command implementations */
597
598 struct key_parse {
599 struct key_params p;
600 int idx;
601 int type;
602 bool def, defmgmt;
603 bool def_uni, def_multi;
604 };
605
606 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
607 {
608 struct nlattr *tb[NL80211_KEY_MAX + 1];
609 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
610 nl80211_key_policy);
611 if (err)
612 return err;
613
614 k->def = !!tb[NL80211_KEY_DEFAULT];
615 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
616
617 if (k->def) {
618 k->def_uni = true;
619 k->def_multi = true;
620 }
621 if (k->defmgmt)
622 k->def_multi = true;
623
624 if (tb[NL80211_KEY_IDX])
625 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
626
627 if (tb[NL80211_KEY_DATA]) {
628 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
629 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
630 }
631
632 if (tb[NL80211_KEY_SEQ]) {
633 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
634 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
635 }
636
637 if (tb[NL80211_KEY_CIPHER])
638 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
639
640 if (tb[NL80211_KEY_TYPE]) {
641 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
642 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
643 return -EINVAL;
644 }
645
646 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
647 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
648 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
649 tb[NL80211_KEY_DEFAULT_TYPES],
650 nl80211_key_default_policy);
651 if (err)
652 return err;
653
654 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
655 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
656 }
657
658 return 0;
659 }
660
661 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
662 {
663 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
664 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
665 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
666 }
667
668 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
669 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
670 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
671 }
672
673 if (info->attrs[NL80211_ATTR_KEY_IDX])
674 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
675
676 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
677 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
678
679 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
680 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
681
682 if (k->def) {
683 k->def_uni = true;
684 k->def_multi = true;
685 }
686 if (k->defmgmt)
687 k->def_multi = true;
688
689 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
690 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
691 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
692 return -EINVAL;
693 }
694
695 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
696 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
697 int err = nla_parse_nested(
698 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
699 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
700 nl80211_key_default_policy);
701 if (err)
702 return err;
703
704 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
705 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
706 }
707
708 return 0;
709 }
710
711 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
712 {
713 int err;
714
715 memset(k, 0, sizeof(*k));
716 k->idx = -1;
717 k->type = -1;
718
719 if (info->attrs[NL80211_ATTR_KEY])
720 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
721 else
722 err = nl80211_parse_key_old(info, k);
723
724 if (err)
725 return err;
726
727 if (k->def && k->defmgmt)
728 return -EINVAL;
729
730 if (k->defmgmt) {
731 if (k->def_uni || !k->def_multi)
732 return -EINVAL;
733 }
734
735 if (k->idx != -1) {
736 if (k->defmgmt) {
737 if (k->idx < 4 || k->idx > 5)
738 return -EINVAL;
739 } else if (k->def) {
740 if (k->idx < 0 || k->idx > 3)
741 return -EINVAL;
742 } else {
743 if (k->idx < 0 || k->idx > 5)
744 return -EINVAL;
745 }
746 }
747
748 return 0;
749 }
750
751 static struct cfg80211_cached_keys *
752 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
753 struct nlattr *keys, bool *no_ht)
754 {
755 struct key_parse parse;
756 struct nlattr *key;
757 struct cfg80211_cached_keys *result;
758 int rem, err, def = 0;
759
760 result = kzalloc(sizeof(*result), GFP_KERNEL);
761 if (!result)
762 return ERR_PTR(-ENOMEM);
763
764 result->def = -1;
765 result->defmgmt = -1;
766
767 nla_for_each_nested(key, keys, rem) {
768 memset(&parse, 0, sizeof(parse));
769 parse.idx = -1;
770
771 err = nl80211_parse_key_new(key, &parse);
772 if (err)
773 goto error;
774 err = -EINVAL;
775 if (!parse.p.key)
776 goto error;
777 if (parse.idx < 0 || parse.idx > 4)
778 goto error;
779 if (parse.def) {
780 if (def)
781 goto error;
782 def = 1;
783 result->def = parse.idx;
784 if (!parse.def_uni || !parse.def_multi)
785 goto error;
786 } else if (parse.defmgmt)
787 goto error;
788 err = cfg80211_validate_key_settings(rdev, &parse.p,
789 parse.idx, false, NULL);
790 if (err)
791 goto error;
792 result->params[parse.idx].cipher = parse.p.cipher;
793 result->params[parse.idx].key_len = parse.p.key_len;
794 result->params[parse.idx].key = result->data[parse.idx];
795 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
796
797 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
798 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
799 if (no_ht)
800 *no_ht = true;
801 }
802 }
803
804 return result;
805 error:
806 kfree(result);
807 return ERR_PTR(err);
808 }
809
810 static int nl80211_key_allowed(struct wireless_dev *wdev)
811 {
812 ASSERT_WDEV_LOCK(wdev);
813
814 switch (wdev->iftype) {
815 case NL80211_IFTYPE_AP:
816 case NL80211_IFTYPE_AP_VLAN:
817 case NL80211_IFTYPE_P2P_GO:
818 case NL80211_IFTYPE_MESH_POINT:
819 break;
820 case NL80211_IFTYPE_ADHOC:
821 case NL80211_IFTYPE_STATION:
822 case NL80211_IFTYPE_P2P_CLIENT:
823 if (!wdev->current_bss)
824 return -ENOLINK;
825 break;
826 default:
827 return -EINVAL;
828 }
829
830 return 0;
831 }
832
833 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
834 {
835 struct nlattr *nl_modes = nla_nest_start(msg, attr);
836 int i;
837
838 if (!nl_modes)
839 goto nla_put_failure;
840
841 i = 0;
842 while (ifmodes) {
843 if ((ifmodes & 1) && nla_put_flag(msg, i))
844 goto nla_put_failure;
845 ifmodes >>= 1;
846 i++;
847 }
848
849 nla_nest_end(msg, nl_modes);
850 return 0;
851
852 nla_put_failure:
853 return -ENOBUFS;
854 }
855
856 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
857 struct sk_buff *msg,
858 bool large)
859 {
860 struct nlattr *nl_combis;
861 int i, j;
862
863 nl_combis = nla_nest_start(msg,
864 NL80211_ATTR_INTERFACE_COMBINATIONS);
865 if (!nl_combis)
866 goto nla_put_failure;
867
868 for (i = 0; i < wiphy->n_iface_combinations; i++) {
869 const struct ieee80211_iface_combination *c;
870 struct nlattr *nl_combi, *nl_limits;
871
872 c = &wiphy->iface_combinations[i];
873
874 nl_combi = nla_nest_start(msg, i + 1);
875 if (!nl_combi)
876 goto nla_put_failure;
877
878 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
879 if (!nl_limits)
880 goto nla_put_failure;
881
882 for (j = 0; j < c->n_limits; j++) {
883 struct nlattr *nl_limit;
884
885 nl_limit = nla_nest_start(msg, j + 1);
886 if (!nl_limit)
887 goto nla_put_failure;
888 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
889 c->limits[j].max))
890 goto nla_put_failure;
891 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
892 c->limits[j].types))
893 goto nla_put_failure;
894 nla_nest_end(msg, nl_limit);
895 }
896
897 nla_nest_end(msg, nl_limits);
898
899 if (c->beacon_int_infra_match &&
900 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
901 goto nla_put_failure;
902 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
903 c->num_different_channels) ||
904 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
905 c->max_interfaces))
906 goto nla_put_failure;
907 if (large &&
908 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
909 c->radar_detect_widths))
910 goto nla_put_failure;
911
912 nla_nest_end(msg, nl_combi);
913 }
914
915 nla_nest_end(msg, nl_combis);
916
917 return 0;
918 nla_put_failure:
919 return -ENOBUFS;
920 }
921
922 #ifdef CONFIG_PM
923 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
924 struct sk_buff *msg)
925 {
926 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
927 struct nlattr *nl_tcp;
928
929 if (!tcp)
930 return 0;
931
932 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
933 if (!nl_tcp)
934 return -ENOBUFS;
935
936 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
937 tcp->data_payload_max))
938 return -ENOBUFS;
939
940 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
941 tcp->data_payload_max))
942 return -ENOBUFS;
943
944 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
945 return -ENOBUFS;
946
947 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
948 sizeof(*tcp->tok), tcp->tok))
949 return -ENOBUFS;
950
951 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
952 tcp->data_interval_max))
953 return -ENOBUFS;
954
955 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
956 tcp->wake_payload_max))
957 return -ENOBUFS;
958
959 nla_nest_end(msg, nl_tcp);
960 return 0;
961 }
962
963 static int nl80211_send_wowlan(struct sk_buff *msg,
964 struct cfg80211_registered_device *dev,
965 bool large)
966 {
967 struct nlattr *nl_wowlan;
968
969 if (!dev->wiphy.wowlan)
970 return 0;
971
972 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
973 if (!nl_wowlan)
974 return -ENOBUFS;
975
976 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
977 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
978 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
979 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
980 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
981 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
982 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
983 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
984 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
985 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
986 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
987 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
988 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
989 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
990 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
991 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
992 return -ENOBUFS;
993
994 if (dev->wiphy.wowlan->n_patterns) {
995 struct nl80211_pattern_support pat = {
996 .max_patterns = dev->wiphy.wowlan->n_patterns,
997 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
998 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
999 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1000 };
1001
1002 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1003 sizeof(pat), &pat))
1004 return -ENOBUFS;
1005 }
1006
1007 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1008 return -ENOBUFS;
1009
1010 nla_nest_end(msg, nl_wowlan);
1011
1012 return 0;
1013 }
1014 #endif
1015
1016 static int nl80211_send_coalesce(struct sk_buff *msg,
1017 struct cfg80211_registered_device *dev)
1018 {
1019 struct nl80211_coalesce_rule_support rule;
1020
1021 if (!dev->wiphy.coalesce)
1022 return 0;
1023
1024 rule.max_rules = dev->wiphy.coalesce->n_rules;
1025 rule.max_delay = dev->wiphy.coalesce->max_delay;
1026 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1027 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1028 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1029 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1030
1031 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1032 return -ENOBUFS;
1033
1034 return 0;
1035 }
1036
1037 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1038 struct ieee80211_supported_band *sband)
1039 {
1040 struct nlattr *nl_rates, *nl_rate;
1041 struct ieee80211_rate *rate;
1042 int i;
1043
1044 /* add HT info */
1045 if (sband->ht_cap.ht_supported &&
1046 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1047 sizeof(sband->ht_cap.mcs),
1048 &sband->ht_cap.mcs) ||
1049 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1050 sband->ht_cap.cap) ||
1051 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1052 sband->ht_cap.ampdu_factor) ||
1053 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1054 sband->ht_cap.ampdu_density)))
1055 return -ENOBUFS;
1056
1057 /* add VHT info */
1058 if (sband->vht_cap.vht_supported &&
1059 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1060 sizeof(sband->vht_cap.vht_mcs),
1061 &sband->vht_cap.vht_mcs) ||
1062 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1063 sband->vht_cap.cap)))
1064 return -ENOBUFS;
1065
1066 /* add bitrates */
1067 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1068 if (!nl_rates)
1069 return -ENOBUFS;
1070
1071 for (i = 0; i < sband->n_bitrates; i++) {
1072 nl_rate = nla_nest_start(msg, i);
1073 if (!nl_rate)
1074 return -ENOBUFS;
1075
1076 rate = &sband->bitrates[i];
1077 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1078 rate->bitrate))
1079 return -ENOBUFS;
1080 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1081 nla_put_flag(msg,
1082 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1083 return -ENOBUFS;
1084
1085 nla_nest_end(msg, nl_rate);
1086 }
1087
1088 nla_nest_end(msg, nl_rates);
1089
1090 return 0;
1091 }
1092
1093 static int
1094 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1095 const struct ieee80211_txrx_stypes *mgmt_stypes)
1096 {
1097 u16 stypes;
1098 struct nlattr *nl_ftypes, *nl_ifs;
1099 enum nl80211_iftype ift;
1100 int i;
1101
1102 if (!mgmt_stypes)
1103 return 0;
1104
1105 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1106 if (!nl_ifs)
1107 return -ENOBUFS;
1108
1109 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1110 nl_ftypes = nla_nest_start(msg, ift);
1111 if (!nl_ftypes)
1112 return -ENOBUFS;
1113 i = 0;
1114 stypes = mgmt_stypes[ift].tx;
1115 while (stypes) {
1116 if ((stypes & 1) &&
1117 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1118 (i << 4) | IEEE80211_FTYPE_MGMT))
1119 return -ENOBUFS;
1120 stypes >>= 1;
1121 i++;
1122 }
1123 nla_nest_end(msg, nl_ftypes);
1124 }
1125
1126 nla_nest_end(msg, nl_ifs);
1127
1128 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1129 if (!nl_ifs)
1130 return -ENOBUFS;
1131
1132 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1133 nl_ftypes = nla_nest_start(msg, ift);
1134 if (!nl_ftypes)
1135 return -ENOBUFS;
1136 i = 0;
1137 stypes = mgmt_stypes[ift].rx;
1138 while (stypes) {
1139 if ((stypes & 1) &&
1140 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1141 (i << 4) | IEEE80211_FTYPE_MGMT))
1142 return -ENOBUFS;
1143 stypes >>= 1;
1144 i++;
1145 }
1146 nla_nest_end(msg, nl_ftypes);
1147 }
1148 nla_nest_end(msg, nl_ifs);
1149
1150 return 0;
1151 }
1152
1153 struct nl80211_dump_wiphy_state {
1154 s64 filter_wiphy;
1155 long start;
1156 long split_start, band_start, chan_start;
1157 bool split;
1158 };
1159
1160 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1161 struct sk_buff *msg, u32 portid, u32 seq,
1162 int flags, struct nl80211_dump_wiphy_state *state)
1163 {
1164 void *hdr;
1165 struct nlattr *nl_bands, *nl_band;
1166 struct nlattr *nl_freqs, *nl_freq;
1167 struct nlattr *nl_cmds;
1168 enum ieee80211_band band;
1169 struct ieee80211_channel *chan;
1170 int i;
1171 const struct ieee80211_txrx_stypes *mgmt_stypes =
1172 dev->wiphy.mgmt_stypes;
1173 u32 features;
1174
1175 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1176 if (!hdr)
1177 return -ENOBUFS;
1178
1179 if (WARN_ON(!state))
1180 return -EINVAL;
1181
1182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1183 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1184 wiphy_name(&dev->wiphy)) ||
1185 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1186 cfg80211_rdev_list_generation))
1187 goto nla_put_failure;
1188
1189 switch (state->split_start) {
1190 case 0:
1191 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1192 dev->wiphy.retry_short) ||
1193 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1194 dev->wiphy.retry_long) ||
1195 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1196 dev->wiphy.frag_threshold) ||
1197 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1198 dev->wiphy.rts_threshold) ||
1199 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1200 dev->wiphy.coverage_class) ||
1201 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1202 dev->wiphy.max_scan_ssids) ||
1203 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1204 dev->wiphy.max_sched_scan_ssids) ||
1205 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1206 dev->wiphy.max_scan_ie_len) ||
1207 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1208 dev->wiphy.max_sched_scan_ie_len) ||
1209 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1210 dev->wiphy.max_match_sets))
1211 goto nla_put_failure;
1212
1213 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1215 goto nla_put_failure;
1216 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1218 goto nla_put_failure;
1219 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1220 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1221 goto nla_put_failure;
1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1223 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1224 goto nla_put_failure;
1225 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1226 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1227 goto nla_put_failure;
1228 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1229 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1230 goto nla_put_failure;
1231 state->split_start++;
1232 if (state->split)
1233 break;
1234 case 1:
1235 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1236 sizeof(u32) * dev->wiphy.n_cipher_suites,
1237 dev->wiphy.cipher_suites))
1238 goto nla_put_failure;
1239
1240 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1241 dev->wiphy.max_num_pmkids))
1242 goto nla_put_failure;
1243
1244 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1245 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1246 goto nla_put_failure;
1247
1248 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1249 dev->wiphy.available_antennas_tx) ||
1250 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1251 dev->wiphy.available_antennas_rx))
1252 goto nla_put_failure;
1253
1254 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1255 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1256 dev->wiphy.probe_resp_offload))
1257 goto nla_put_failure;
1258
1259 if ((dev->wiphy.available_antennas_tx ||
1260 dev->wiphy.available_antennas_rx) &&
1261 dev->ops->get_antenna) {
1262 u32 tx_ant = 0, rx_ant = 0;
1263 int res;
1264 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1265 if (!res) {
1266 if (nla_put_u32(msg,
1267 NL80211_ATTR_WIPHY_ANTENNA_TX,
1268 tx_ant) ||
1269 nla_put_u32(msg,
1270 NL80211_ATTR_WIPHY_ANTENNA_RX,
1271 rx_ant))
1272 goto nla_put_failure;
1273 }
1274 }
1275
1276 state->split_start++;
1277 if (state->split)
1278 break;
1279 case 2:
1280 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1281 dev->wiphy.interface_modes))
1282 goto nla_put_failure;
1283 state->split_start++;
1284 if (state->split)
1285 break;
1286 case 3:
1287 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1288 if (!nl_bands)
1289 goto nla_put_failure;
1290
1291 for (band = state->band_start;
1292 band < IEEE80211_NUM_BANDS; band++) {
1293 struct ieee80211_supported_band *sband;
1294
1295 sband = dev->wiphy.bands[band];
1296
1297 if (!sband)
1298 continue;
1299
1300 nl_band = nla_nest_start(msg, band);
1301 if (!nl_band)
1302 goto nla_put_failure;
1303
1304 switch (state->chan_start) {
1305 case 0:
1306 if (nl80211_send_band_rateinfo(msg, sband))
1307 goto nla_put_failure;
1308 state->chan_start++;
1309 if (state->split)
1310 break;
1311 default:
1312 /* add frequencies */
1313 nl_freqs = nla_nest_start(
1314 msg, NL80211_BAND_ATTR_FREQS);
1315 if (!nl_freqs)
1316 goto nla_put_failure;
1317
1318 for (i = state->chan_start - 1;
1319 i < sband->n_channels;
1320 i++) {
1321 nl_freq = nla_nest_start(msg, i);
1322 if (!nl_freq)
1323 goto nla_put_failure;
1324
1325 chan = &sband->channels[i];
1326
1327 if (nl80211_msg_put_channel(
1328 msg, chan,
1329 state->split))
1330 goto nla_put_failure;
1331
1332 nla_nest_end(msg, nl_freq);
1333 if (state->split)
1334 break;
1335 }
1336 if (i < sband->n_channels)
1337 state->chan_start = i + 2;
1338 else
1339 state->chan_start = 0;
1340 nla_nest_end(msg, nl_freqs);
1341 }
1342
1343 nla_nest_end(msg, nl_band);
1344
1345 if (state->split) {
1346 /* start again here */
1347 if (state->chan_start)
1348 band--;
1349 break;
1350 }
1351 }
1352 nla_nest_end(msg, nl_bands);
1353
1354 if (band < IEEE80211_NUM_BANDS)
1355 state->band_start = band + 1;
1356 else
1357 state->band_start = 0;
1358
1359 /* if bands & channels are done, continue outside */
1360 if (state->band_start == 0 && state->chan_start == 0)
1361 state->split_start++;
1362 if (state->split)
1363 break;
1364 case 4:
1365 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1366 if (!nl_cmds)
1367 goto nla_put_failure;
1368
1369 i = 0;
1370 #define CMD(op, n) \
1371 do { \
1372 if (dev->ops->op) { \
1373 i++; \
1374 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1375 goto nla_put_failure; \
1376 } \
1377 } while (0)
1378
1379 CMD(add_virtual_intf, NEW_INTERFACE);
1380 CMD(change_virtual_intf, SET_INTERFACE);
1381 CMD(add_key, NEW_KEY);
1382 CMD(start_ap, START_AP);
1383 CMD(add_station, NEW_STATION);
1384 CMD(add_mpath, NEW_MPATH);
1385 CMD(update_mesh_config, SET_MESH_CONFIG);
1386 CMD(change_bss, SET_BSS);
1387 CMD(auth, AUTHENTICATE);
1388 CMD(assoc, ASSOCIATE);
1389 CMD(deauth, DEAUTHENTICATE);
1390 CMD(disassoc, DISASSOCIATE);
1391 CMD(join_ibss, JOIN_IBSS);
1392 CMD(join_mesh, JOIN_MESH);
1393 CMD(set_pmksa, SET_PMKSA);
1394 CMD(del_pmksa, DEL_PMKSA);
1395 CMD(flush_pmksa, FLUSH_PMKSA);
1396 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1397 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1398 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1399 CMD(mgmt_tx, FRAME);
1400 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1401 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1402 i++;
1403 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1404 goto nla_put_failure;
1405 }
1406 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1407 dev->ops->join_mesh) {
1408 i++;
1409 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1410 goto nla_put_failure;
1411 }
1412 CMD(set_wds_peer, SET_WDS_PEER);
1413 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1414 CMD(tdls_mgmt, TDLS_MGMT);
1415 CMD(tdls_oper, TDLS_OPER);
1416 }
1417 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1418 CMD(sched_scan_start, START_SCHED_SCAN);
1419 CMD(probe_client, PROBE_CLIENT);
1420 CMD(set_noack_map, SET_NOACK_MAP);
1421 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1422 i++;
1423 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1424 goto nla_put_failure;
1425 }
1426 CMD(start_p2p_device, START_P2P_DEVICE);
1427 CMD(set_mcast_rate, SET_MCAST_RATE);
1428 if (state->split) {
1429 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1430 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1431 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1432 CMD(channel_switch, CHANNEL_SWITCH);
1433 }
1434
1435 #ifdef CONFIG_NL80211_TESTMODE
1436 CMD(testmode_cmd, TESTMODE);
1437 #endif
1438
1439 #undef CMD
1440
1441 if (dev->ops->connect || dev->ops->auth) {
1442 i++;
1443 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1444 goto nla_put_failure;
1445 }
1446
1447 if (dev->ops->disconnect || dev->ops->deauth) {
1448 i++;
1449 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1450 goto nla_put_failure;
1451 }
1452
1453 nla_nest_end(msg, nl_cmds);
1454 state->split_start++;
1455 if (state->split)
1456 break;
1457 case 5:
1458 if (dev->ops->remain_on_channel &&
1459 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1460 nla_put_u32(msg,
1461 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1462 dev->wiphy.max_remain_on_channel_duration))
1463 goto nla_put_failure;
1464
1465 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1466 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1467 goto nla_put_failure;
1468
1469 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1470 goto nla_put_failure;
1471 state->split_start++;
1472 if (state->split)
1473 break;
1474 case 6:
1475 #ifdef CONFIG_PM
1476 if (nl80211_send_wowlan(msg, dev, state->split))
1477 goto nla_put_failure;
1478 state->split_start++;
1479 if (state->split)
1480 break;
1481 #else
1482 state->split_start++;
1483 #endif
1484 case 7:
1485 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1486 dev->wiphy.software_iftypes))
1487 goto nla_put_failure;
1488
1489 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1490 state->split))
1491 goto nla_put_failure;
1492
1493 state->split_start++;
1494 if (state->split)
1495 break;
1496 case 8:
1497 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1498 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1499 dev->wiphy.ap_sme_capa))
1500 goto nla_put_failure;
1501
1502 features = dev->wiphy.features;
1503 /*
1504 * We can only add the per-channel limit information if the
1505 * dump is split, otherwise it makes it too big. Therefore
1506 * only advertise it in that case.
1507 */
1508 if (state->split)
1509 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1510 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1511 goto nla_put_failure;
1512
1513 if (dev->wiphy.ht_capa_mod_mask &&
1514 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1515 sizeof(*dev->wiphy.ht_capa_mod_mask),
1516 dev->wiphy.ht_capa_mod_mask))
1517 goto nla_put_failure;
1518
1519 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1520 dev->wiphy.max_acl_mac_addrs &&
1521 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1522 dev->wiphy.max_acl_mac_addrs))
1523 goto nla_put_failure;
1524
1525 /*
1526 * Any information below this point is only available to
1527 * applications that can deal with it being split. This
1528 * helps ensure that newly added capabilities don't break
1529 * older tools by overrunning their buffers.
1530 *
1531 * We still increment split_start so that in the split
1532 * case we'll continue with more data in the next round,
1533 * but break unconditionally so unsplit data stops here.
1534 */
1535 state->split_start++;
1536 break;
1537 case 9:
1538 if (dev->wiphy.extended_capabilities &&
1539 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1540 dev->wiphy.extended_capabilities_len,
1541 dev->wiphy.extended_capabilities) ||
1542 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1543 dev->wiphy.extended_capabilities_len,
1544 dev->wiphy.extended_capabilities_mask)))
1545 goto nla_put_failure;
1546
1547 if (dev->wiphy.vht_capa_mod_mask &&
1548 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1549 sizeof(*dev->wiphy.vht_capa_mod_mask),
1550 dev->wiphy.vht_capa_mod_mask))
1551 goto nla_put_failure;
1552
1553 state->split_start++;
1554 break;
1555 case 10:
1556 if (nl80211_send_coalesce(msg, dev))
1557 goto nla_put_failure;
1558
1559 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1560 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1561 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1562 goto nla_put_failure;
1563
1564 /* done */
1565 state->split_start = 0;
1566 break;
1567 }
1568 return genlmsg_end(msg, hdr);
1569
1570 nla_put_failure:
1571 genlmsg_cancel(msg, hdr);
1572 return -EMSGSIZE;
1573 }
1574
1575 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1576 struct netlink_callback *cb,
1577 struct nl80211_dump_wiphy_state *state)
1578 {
1579 struct nlattr **tb = nl80211_fam.attrbuf;
1580 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1581 tb, nl80211_fam.maxattr, nl80211_policy);
1582 /* ignore parse errors for backward compatibility */
1583 if (ret)
1584 return 0;
1585
1586 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1587 if (tb[NL80211_ATTR_WIPHY])
1588 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1589 if (tb[NL80211_ATTR_WDEV])
1590 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1591 if (tb[NL80211_ATTR_IFINDEX]) {
1592 struct net_device *netdev;
1593 struct cfg80211_registered_device *rdev;
1594 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1595
1596 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1597 if (!netdev)
1598 return -ENODEV;
1599 if (netdev->ieee80211_ptr) {
1600 rdev = wiphy_to_dev(
1601 netdev->ieee80211_ptr->wiphy);
1602 state->filter_wiphy = rdev->wiphy_idx;
1603 }
1604 dev_put(netdev);
1605 }
1606
1607 return 0;
1608 }
1609
1610 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1611 {
1612 int idx = 0, ret;
1613 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1614 struct cfg80211_registered_device *dev;
1615
1616 rtnl_lock();
1617 if (!state) {
1618 state = kzalloc(sizeof(*state), GFP_KERNEL);
1619 if (!state) {
1620 rtnl_unlock();
1621 return -ENOMEM;
1622 }
1623 state->filter_wiphy = -1;
1624 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1625 if (ret) {
1626 kfree(state);
1627 rtnl_unlock();
1628 return ret;
1629 }
1630 cb->args[0] = (long)state;
1631 }
1632
1633 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1634 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1635 continue;
1636 if (++idx <= state->start)
1637 continue;
1638 if (state->filter_wiphy != -1 &&
1639 state->filter_wiphy != dev->wiphy_idx)
1640 continue;
1641 /* attempt to fit multiple wiphy data chunks into the skb */
1642 do {
1643 ret = nl80211_send_wiphy(dev, skb,
1644 NETLINK_CB(cb->skb).portid,
1645 cb->nlh->nlmsg_seq,
1646 NLM_F_MULTI, state);
1647 if (ret < 0) {
1648 /*
1649 * If sending the wiphy data didn't fit (ENOBUFS
1650 * or EMSGSIZE returned), this SKB is still
1651 * empty (so it's not too big because another
1652 * wiphy dataset is already in the skb) and
1653 * we've not tried to adjust the dump allocation
1654 * yet ... then adjust the alloc size to be
1655 * bigger, and return 1 but with the empty skb.
1656 * This results in an empty message being RX'ed
1657 * in userspace, but that is ignored.
1658 *
1659 * We can then retry with the larger buffer.
1660 */
1661 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1662 !skb->len &&
1663 cb->min_dump_alloc < 4096) {
1664 cb->min_dump_alloc = 4096;
1665 rtnl_unlock();
1666 return 1;
1667 }
1668 idx--;
1669 break;
1670 }
1671 } while (state->split_start > 0);
1672 break;
1673 }
1674 rtnl_unlock();
1675
1676 state->start = idx;
1677
1678 return skb->len;
1679 }
1680
1681 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1682 {
1683 kfree((void *)cb->args[0]);
1684 return 0;
1685 }
1686
1687 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1688 {
1689 struct sk_buff *msg;
1690 struct cfg80211_registered_device *dev = info->user_ptr[0];
1691 struct nl80211_dump_wiphy_state state = {};
1692
1693 msg = nlmsg_new(4096, GFP_KERNEL);
1694 if (!msg)
1695 return -ENOMEM;
1696
1697 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1698 &state) < 0) {
1699 nlmsg_free(msg);
1700 return -ENOBUFS;
1701 }
1702
1703 return genlmsg_reply(msg, info);
1704 }
1705
1706 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1707 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1708 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1709 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1710 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1711 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1712 };
1713
1714 static int parse_txq_params(struct nlattr *tb[],
1715 struct ieee80211_txq_params *txq_params)
1716 {
1717 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1718 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1719 !tb[NL80211_TXQ_ATTR_AIFS])
1720 return -EINVAL;
1721
1722 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1723 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1724 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1725 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1726 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1727
1728 if (txq_params->ac >= NL80211_NUM_ACS)
1729 return -EINVAL;
1730
1731 return 0;
1732 }
1733
1734 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1735 {
1736 /*
1737 * You can only set the channel explicitly for WDS interfaces,
1738 * all others have their channel managed via their respective
1739 * "establish a connection" command (connect, join, ...)
1740 *
1741 * For AP/GO and mesh mode, the channel can be set with the
1742 * channel userspace API, but is only stored and passed to the
1743 * low-level driver when the AP starts or the mesh is joined.
1744 * This is for backward compatibility, userspace can also give
1745 * the channel in the start-ap or join-mesh commands instead.
1746 *
1747 * Monitors are special as they are normally slaved to
1748 * whatever else is going on, so they have their own special
1749 * operation to set the monitor channel if possible.
1750 */
1751 return !wdev ||
1752 wdev->iftype == NL80211_IFTYPE_AP ||
1753 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1754 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1755 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1756 }
1757
1758 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1759 struct genl_info *info,
1760 struct cfg80211_chan_def *chandef)
1761 {
1762 u32 control_freq;
1763
1764 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1765 return -EINVAL;
1766
1767 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1768
1769 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1770 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1771 chandef->center_freq1 = control_freq;
1772 chandef->center_freq2 = 0;
1773
1774 /* Primary channel not allowed */
1775 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1776 return -EINVAL;
1777
1778 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1779 enum nl80211_channel_type chantype;
1780
1781 chantype = nla_get_u32(
1782 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1783
1784 switch (chantype) {
1785 case NL80211_CHAN_NO_HT:
1786 case NL80211_CHAN_HT20:
1787 case NL80211_CHAN_HT40PLUS:
1788 case NL80211_CHAN_HT40MINUS:
1789 cfg80211_chandef_create(chandef, chandef->chan,
1790 chantype);
1791 break;
1792 default:
1793 return -EINVAL;
1794 }
1795 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1796 chandef->width =
1797 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1798 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1799 chandef->center_freq1 =
1800 nla_get_u32(
1801 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1802 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1803 chandef->center_freq2 =
1804 nla_get_u32(
1805 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1806 }
1807
1808 if (!cfg80211_chandef_valid(chandef))
1809 return -EINVAL;
1810
1811 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1812 IEEE80211_CHAN_DISABLED))
1813 return -EINVAL;
1814
1815 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1816 chandef->width == NL80211_CHAN_WIDTH_10) &&
1817 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1818 return -EINVAL;
1819
1820 return 0;
1821 }
1822
1823 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1824 struct wireless_dev *wdev,
1825 struct genl_info *info)
1826 {
1827 struct cfg80211_chan_def chandef;
1828 int result;
1829 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1830
1831 if (wdev)
1832 iftype = wdev->iftype;
1833
1834 if (!nl80211_can_set_dev_channel(wdev))
1835 return -EOPNOTSUPP;
1836
1837 result = nl80211_parse_chandef(rdev, info, &chandef);
1838 if (result)
1839 return result;
1840
1841 switch (iftype) {
1842 case NL80211_IFTYPE_AP:
1843 case NL80211_IFTYPE_P2P_GO:
1844 if (wdev->beacon_interval) {
1845 result = -EBUSY;
1846 break;
1847 }
1848 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1849 result = -EINVAL;
1850 break;
1851 }
1852 wdev->preset_chandef = chandef;
1853 result = 0;
1854 break;
1855 case NL80211_IFTYPE_MESH_POINT:
1856 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1857 break;
1858 case NL80211_IFTYPE_MONITOR:
1859 result = cfg80211_set_monitor_channel(rdev, &chandef);
1860 break;
1861 default:
1862 result = -EINVAL;
1863 }
1864
1865 return result;
1866 }
1867
1868 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1869 {
1870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1871 struct net_device *netdev = info->user_ptr[1];
1872
1873 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1874 }
1875
1876 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1877 {
1878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1879 struct net_device *dev = info->user_ptr[1];
1880 struct wireless_dev *wdev = dev->ieee80211_ptr;
1881 const u8 *bssid;
1882
1883 if (!info->attrs[NL80211_ATTR_MAC])
1884 return -EINVAL;
1885
1886 if (netif_running(dev))
1887 return -EBUSY;
1888
1889 if (!rdev->ops->set_wds_peer)
1890 return -EOPNOTSUPP;
1891
1892 if (wdev->iftype != NL80211_IFTYPE_WDS)
1893 return -EOPNOTSUPP;
1894
1895 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1896 return rdev_set_wds_peer(rdev, dev, bssid);
1897 }
1898
1899
1900 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1901 {
1902 struct cfg80211_registered_device *rdev;
1903 struct net_device *netdev = NULL;
1904 struct wireless_dev *wdev;
1905 int result = 0, rem_txq_params = 0;
1906 struct nlattr *nl_txq_params;
1907 u32 changed;
1908 u8 retry_short = 0, retry_long = 0;
1909 u32 frag_threshold = 0, rts_threshold = 0;
1910 u8 coverage_class = 0;
1911
1912 ASSERT_RTNL();
1913
1914 /*
1915 * Try to find the wiphy and netdev. Normally this
1916 * function shouldn't need the netdev, but this is
1917 * done for backward compatibility -- previously
1918 * setting the channel was done per wiphy, but now
1919 * it is per netdev. Previous userland like hostapd
1920 * also passed a netdev to set_wiphy, so that it is
1921 * possible to let that go to the right netdev!
1922 */
1923
1924 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1925 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1926
1927 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1928 if (netdev && netdev->ieee80211_ptr)
1929 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1930 else
1931 netdev = NULL;
1932 }
1933
1934 if (!netdev) {
1935 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1936 info->attrs);
1937 if (IS_ERR(rdev))
1938 return PTR_ERR(rdev);
1939 wdev = NULL;
1940 netdev = NULL;
1941 result = 0;
1942 } else
1943 wdev = netdev->ieee80211_ptr;
1944
1945 /*
1946 * end workaround code, by now the rdev is available
1947 * and locked, and wdev may or may not be NULL.
1948 */
1949
1950 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1951 result = cfg80211_dev_rename(
1952 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1953
1954 if (result)
1955 goto bad_res;
1956
1957 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1958 struct ieee80211_txq_params txq_params;
1959 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1960
1961 if (!rdev->ops->set_txq_params) {
1962 result = -EOPNOTSUPP;
1963 goto bad_res;
1964 }
1965
1966 if (!netdev) {
1967 result = -EINVAL;
1968 goto bad_res;
1969 }
1970
1971 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1972 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1973 result = -EINVAL;
1974 goto bad_res;
1975 }
1976
1977 if (!netif_running(netdev)) {
1978 result = -ENETDOWN;
1979 goto bad_res;
1980 }
1981
1982 nla_for_each_nested(nl_txq_params,
1983 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1984 rem_txq_params) {
1985 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1986 nla_data(nl_txq_params),
1987 nla_len(nl_txq_params),
1988 txq_params_policy);
1989 result = parse_txq_params(tb, &txq_params);
1990 if (result)
1991 goto bad_res;
1992
1993 result = rdev_set_txq_params(rdev, netdev,
1994 &txq_params);
1995 if (result)
1996 goto bad_res;
1997 }
1998 }
1999
2000 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2001 result = __nl80211_set_channel(rdev,
2002 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2003 info);
2004 if (result)
2005 goto bad_res;
2006 }
2007
2008 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2009 struct wireless_dev *txp_wdev = wdev;
2010 enum nl80211_tx_power_setting type;
2011 int idx, mbm = 0;
2012
2013 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2014 txp_wdev = NULL;
2015
2016 if (!rdev->ops->set_tx_power) {
2017 result = -EOPNOTSUPP;
2018 goto bad_res;
2019 }
2020
2021 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2022 type = nla_get_u32(info->attrs[idx]);
2023
2024 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2025 (type != NL80211_TX_POWER_AUTOMATIC)) {
2026 result = -EINVAL;
2027 goto bad_res;
2028 }
2029
2030 if (type != NL80211_TX_POWER_AUTOMATIC) {
2031 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2032 mbm = nla_get_u32(info->attrs[idx]);
2033 }
2034
2035 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2036 if (result)
2037 goto bad_res;
2038 }
2039
2040 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2041 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2042 u32 tx_ant, rx_ant;
2043 if ((!rdev->wiphy.available_antennas_tx &&
2044 !rdev->wiphy.available_antennas_rx) ||
2045 !rdev->ops->set_antenna) {
2046 result = -EOPNOTSUPP;
2047 goto bad_res;
2048 }
2049
2050 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2051 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2052
2053 /* reject antenna configurations which don't match the
2054 * available antenna masks, except for the "all" mask */
2055 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2056 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2057 result = -EINVAL;
2058 goto bad_res;
2059 }
2060
2061 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2062 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2063
2064 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2065 if (result)
2066 goto bad_res;
2067 }
2068
2069 changed = 0;
2070
2071 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2072 retry_short = nla_get_u8(
2073 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2074 if (retry_short == 0) {
2075 result = -EINVAL;
2076 goto bad_res;
2077 }
2078 changed |= WIPHY_PARAM_RETRY_SHORT;
2079 }
2080
2081 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2082 retry_long = nla_get_u8(
2083 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2084 if (retry_long == 0) {
2085 result = -EINVAL;
2086 goto bad_res;
2087 }
2088 changed |= WIPHY_PARAM_RETRY_LONG;
2089 }
2090
2091 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2092 frag_threshold = nla_get_u32(
2093 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2094 if (frag_threshold < 256) {
2095 result = -EINVAL;
2096 goto bad_res;
2097 }
2098 if (frag_threshold != (u32) -1) {
2099 /*
2100 * Fragments (apart from the last one) are required to
2101 * have even length. Make the fragmentation code
2102 * simpler by stripping LSB should someone try to use
2103 * odd threshold value.
2104 */
2105 frag_threshold &= ~0x1;
2106 }
2107 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2108 }
2109
2110 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2111 rts_threshold = nla_get_u32(
2112 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2113 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2114 }
2115
2116 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2117 coverage_class = nla_get_u8(
2118 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2119 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2120 }
2121
2122 if (changed) {
2123 u8 old_retry_short, old_retry_long;
2124 u32 old_frag_threshold, old_rts_threshold;
2125 u8 old_coverage_class;
2126
2127 if (!rdev->ops->set_wiphy_params) {
2128 result = -EOPNOTSUPP;
2129 goto bad_res;
2130 }
2131
2132 old_retry_short = rdev->wiphy.retry_short;
2133 old_retry_long = rdev->wiphy.retry_long;
2134 old_frag_threshold = rdev->wiphy.frag_threshold;
2135 old_rts_threshold = rdev->wiphy.rts_threshold;
2136 old_coverage_class = rdev->wiphy.coverage_class;
2137
2138 if (changed & WIPHY_PARAM_RETRY_SHORT)
2139 rdev->wiphy.retry_short = retry_short;
2140 if (changed & WIPHY_PARAM_RETRY_LONG)
2141 rdev->wiphy.retry_long = retry_long;
2142 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2143 rdev->wiphy.frag_threshold = frag_threshold;
2144 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2145 rdev->wiphy.rts_threshold = rts_threshold;
2146 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2147 rdev->wiphy.coverage_class = coverage_class;
2148
2149 result = rdev_set_wiphy_params(rdev, changed);
2150 if (result) {
2151 rdev->wiphy.retry_short = old_retry_short;
2152 rdev->wiphy.retry_long = old_retry_long;
2153 rdev->wiphy.frag_threshold = old_frag_threshold;
2154 rdev->wiphy.rts_threshold = old_rts_threshold;
2155 rdev->wiphy.coverage_class = old_coverage_class;
2156 }
2157 }
2158
2159 bad_res:
2160 if (netdev)
2161 dev_put(netdev);
2162 return result;
2163 }
2164
2165 static inline u64 wdev_id(struct wireless_dev *wdev)
2166 {
2167 return (u64)wdev->identifier |
2168 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2169 }
2170
2171 static int nl80211_send_chandef(struct sk_buff *msg,
2172 const struct cfg80211_chan_def *chandef)
2173 {
2174 WARN_ON(!cfg80211_chandef_valid(chandef));
2175
2176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2177 chandef->chan->center_freq))
2178 return -ENOBUFS;
2179 switch (chandef->width) {
2180 case NL80211_CHAN_WIDTH_20_NOHT:
2181 case NL80211_CHAN_WIDTH_20:
2182 case NL80211_CHAN_WIDTH_40:
2183 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2184 cfg80211_get_chandef_type(chandef)))
2185 return -ENOBUFS;
2186 break;
2187 default:
2188 break;
2189 }
2190 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2191 return -ENOBUFS;
2192 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2193 return -ENOBUFS;
2194 if (chandef->center_freq2 &&
2195 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2196 return -ENOBUFS;
2197 return 0;
2198 }
2199
2200 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2201 struct cfg80211_registered_device *rdev,
2202 struct wireless_dev *wdev)
2203 {
2204 struct net_device *dev = wdev->netdev;
2205 void *hdr;
2206
2207 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2208 if (!hdr)
2209 return -1;
2210
2211 if (dev &&
2212 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2213 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2214 goto nla_put_failure;
2215
2216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2217 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2218 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2219 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2220 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2221 rdev->devlist_generation ^
2222 (cfg80211_rdev_list_generation << 2)))
2223 goto nla_put_failure;
2224
2225 if (rdev->ops->get_channel) {
2226 int ret;
2227 struct cfg80211_chan_def chandef;
2228
2229 ret = rdev_get_channel(rdev, wdev, &chandef);
2230 if (ret == 0) {
2231 if (nl80211_send_chandef(msg, &chandef))
2232 goto nla_put_failure;
2233 }
2234 }
2235
2236 if (wdev->ssid_len) {
2237 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2238 goto nla_put_failure;
2239 }
2240
2241 return genlmsg_end(msg, hdr);
2242
2243 nla_put_failure:
2244 genlmsg_cancel(msg, hdr);
2245 return -EMSGSIZE;
2246 }
2247
2248 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2249 {
2250 int wp_idx = 0;
2251 int if_idx = 0;
2252 int wp_start = cb->args[0];
2253 int if_start = cb->args[1];
2254 struct cfg80211_registered_device *rdev;
2255 struct wireless_dev *wdev;
2256
2257 rtnl_lock();
2258 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2259 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2260 continue;
2261 if (wp_idx < wp_start) {
2262 wp_idx++;
2263 continue;
2264 }
2265 if_idx = 0;
2266
2267 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2268 if (if_idx < if_start) {
2269 if_idx++;
2270 continue;
2271 }
2272 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2273 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2274 rdev, wdev) < 0) {
2275 goto out;
2276 }
2277 if_idx++;
2278 }
2279
2280 wp_idx++;
2281 }
2282 out:
2283 rtnl_unlock();
2284
2285 cb->args[0] = wp_idx;
2286 cb->args[1] = if_idx;
2287
2288 return skb->len;
2289 }
2290
2291 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2292 {
2293 struct sk_buff *msg;
2294 struct cfg80211_registered_device *dev = info->user_ptr[0];
2295 struct wireless_dev *wdev = info->user_ptr[1];
2296
2297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2298 if (!msg)
2299 return -ENOMEM;
2300
2301 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2302 dev, wdev) < 0) {
2303 nlmsg_free(msg);
2304 return -ENOBUFS;
2305 }
2306
2307 return genlmsg_reply(msg, info);
2308 }
2309
2310 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2311 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2312 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2313 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2314 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2315 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2316 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2317 };
2318
2319 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2320 {
2321 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2322 int flag;
2323
2324 *mntrflags = 0;
2325
2326 if (!nla)
2327 return -EINVAL;
2328
2329 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2330 nla, mntr_flags_policy))
2331 return -EINVAL;
2332
2333 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2334 if (flags[flag])
2335 *mntrflags |= (1<<flag);
2336
2337 return 0;
2338 }
2339
2340 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2341 struct net_device *netdev, u8 use_4addr,
2342 enum nl80211_iftype iftype)
2343 {
2344 if (!use_4addr) {
2345 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2346 return -EBUSY;
2347 return 0;
2348 }
2349
2350 switch (iftype) {
2351 case NL80211_IFTYPE_AP_VLAN:
2352 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2353 return 0;
2354 break;
2355 case NL80211_IFTYPE_STATION:
2356 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2357 return 0;
2358 break;
2359 default:
2360 break;
2361 }
2362
2363 return -EOPNOTSUPP;
2364 }
2365
2366 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2367 {
2368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2369 struct vif_params params;
2370 int err;
2371 enum nl80211_iftype otype, ntype;
2372 struct net_device *dev = info->user_ptr[1];
2373 u32 _flags, *flags = NULL;
2374 bool change = false;
2375
2376 memset(&params, 0, sizeof(params));
2377
2378 otype = ntype = dev->ieee80211_ptr->iftype;
2379
2380 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2381 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2382 if (otype != ntype)
2383 change = true;
2384 if (ntype > NL80211_IFTYPE_MAX)
2385 return -EINVAL;
2386 }
2387
2388 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2389 struct wireless_dev *wdev = dev->ieee80211_ptr;
2390
2391 if (ntype != NL80211_IFTYPE_MESH_POINT)
2392 return -EINVAL;
2393 if (netif_running(dev))
2394 return -EBUSY;
2395
2396 wdev_lock(wdev);
2397 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2398 IEEE80211_MAX_MESH_ID_LEN);
2399 wdev->mesh_id_up_len =
2400 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2401 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2402 wdev->mesh_id_up_len);
2403 wdev_unlock(wdev);
2404 }
2405
2406 if (info->attrs[NL80211_ATTR_4ADDR]) {
2407 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2408 change = true;
2409 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2410 if (err)
2411 return err;
2412 } else {
2413 params.use_4addr = -1;
2414 }
2415
2416 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2417 if (ntype != NL80211_IFTYPE_MONITOR)
2418 return -EINVAL;
2419 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2420 &_flags);
2421 if (err)
2422 return err;
2423
2424 flags = &_flags;
2425 change = true;
2426 }
2427
2428 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2429 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2430 return -EOPNOTSUPP;
2431
2432 if (change)
2433 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2434 else
2435 err = 0;
2436
2437 if (!err && params.use_4addr != -1)
2438 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2439
2440 return err;
2441 }
2442
2443 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2444 {
2445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2446 struct vif_params params;
2447 struct wireless_dev *wdev;
2448 struct sk_buff *msg;
2449 int err;
2450 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2451 u32 flags;
2452
2453 memset(&params, 0, sizeof(params));
2454
2455 if (!info->attrs[NL80211_ATTR_IFNAME])
2456 return -EINVAL;
2457
2458 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2459 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2460 if (type > NL80211_IFTYPE_MAX)
2461 return -EINVAL;
2462 }
2463
2464 if (!rdev->ops->add_virtual_intf ||
2465 !(rdev->wiphy.interface_modes & (1 << type)))
2466 return -EOPNOTSUPP;
2467
2468 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2469 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2470 ETH_ALEN);
2471 if (!is_valid_ether_addr(params.macaddr))
2472 return -EADDRNOTAVAIL;
2473 }
2474
2475 if (info->attrs[NL80211_ATTR_4ADDR]) {
2476 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2477 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2478 if (err)
2479 return err;
2480 }
2481
2482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2483 if (!msg)
2484 return -ENOMEM;
2485
2486 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2487 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2488 &flags);
2489
2490 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2491 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2492 return -EOPNOTSUPP;
2493
2494 wdev = rdev_add_virtual_intf(rdev,
2495 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2496 type, err ? NULL : &flags, &params);
2497 if (IS_ERR(wdev)) {
2498 nlmsg_free(msg);
2499 return PTR_ERR(wdev);
2500 }
2501
2502 switch (type) {
2503 case NL80211_IFTYPE_MESH_POINT:
2504 if (!info->attrs[NL80211_ATTR_MESH_ID])
2505 break;
2506 wdev_lock(wdev);
2507 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2508 IEEE80211_MAX_MESH_ID_LEN);
2509 wdev->mesh_id_up_len =
2510 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2511 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2512 wdev->mesh_id_up_len);
2513 wdev_unlock(wdev);
2514 break;
2515 case NL80211_IFTYPE_P2P_DEVICE:
2516 /*
2517 * P2P Device doesn't have a netdev, so doesn't go
2518 * through the netdev notifier and must be added here
2519 */
2520 mutex_init(&wdev->mtx);
2521 INIT_LIST_HEAD(&wdev->event_list);
2522 spin_lock_init(&wdev->event_lock);
2523 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2524 spin_lock_init(&wdev->mgmt_registrations_lock);
2525
2526 wdev->identifier = ++rdev->wdev_id;
2527 list_add_rcu(&wdev->list, &rdev->wdev_list);
2528 rdev->devlist_generation++;
2529 break;
2530 default:
2531 break;
2532 }
2533
2534 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2535 rdev, wdev) < 0) {
2536 nlmsg_free(msg);
2537 return -ENOBUFS;
2538 }
2539
2540 return genlmsg_reply(msg, info);
2541 }
2542
2543 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2544 {
2545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2546 struct wireless_dev *wdev = info->user_ptr[1];
2547
2548 if (!rdev->ops->del_virtual_intf)
2549 return -EOPNOTSUPP;
2550
2551 /*
2552 * If we remove a wireless device without a netdev then clear
2553 * user_ptr[1] so that nl80211_post_doit won't dereference it
2554 * to check if it needs to do dev_put(). Otherwise it crashes
2555 * since the wdev has been freed, unlike with a netdev where
2556 * we need the dev_put() for the netdev to really be freed.
2557 */
2558 if (!wdev->netdev)
2559 info->user_ptr[1] = NULL;
2560
2561 return rdev_del_virtual_intf(rdev, wdev);
2562 }
2563
2564 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2565 {
2566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2567 struct net_device *dev = info->user_ptr[1];
2568 u16 noack_map;
2569
2570 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2571 return -EINVAL;
2572
2573 if (!rdev->ops->set_noack_map)
2574 return -EOPNOTSUPP;
2575
2576 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2577
2578 return rdev_set_noack_map(rdev, dev, noack_map);
2579 }
2580
2581 struct get_key_cookie {
2582 struct sk_buff *msg;
2583 int error;
2584 int idx;
2585 };
2586
2587 static void get_key_callback(void *c, struct key_params *params)
2588 {
2589 struct nlattr *key;
2590 struct get_key_cookie *cookie = c;
2591
2592 if ((params->key &&
2593 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2594 params->key_len, params->key)) ||
2595 (params->seq &&
2596 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2597 params->seq_len, params->seq)) ||
2598 (params->cipher &&
2599 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2600 params->cipher)))
2601 goto nla_put_failure;
2602
2603 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2604 if (!key)
2605 goto nla_put_failure;
2606
2607 if ((params->key &&
2608 nla_put(cookie->msg, NL80211_KEY_DATA,
2609 params->key_len, params->key)) ||
2610 (params->seq &&
2611 nla_put(cookie->msg, NL80211_KEY_SEQ,
2612 params->seq_len, params->seq)) ||
2613 (params->cipher &&
2614 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2615 params->cipher)))
2616 goto nla_put_failure;
2617
2618 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2619 goto nla_put_failure;
2620
2621 nla_nest_end(cookie->msg, key);
2622
2623 return;
2624 nla_put_failure:
2625 cookie->error = 1;
2626 }
2627
2628 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2629 {
2630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2631 int err;
2632 struct net_device *dev = info->user_ptr[1];
2633 u8 key_idx = 0;
2634 const u8 *mac_addr = NULL;
2635 bool pairwise;
2636 struct get_key_cookie cookie = {
2637 .error = 0,
2638 };
2639 void *hdr;
2640 struct sk_buff *msg;
2641
2642 if (info->attrs[NL80211_ATTR_KEY_IDX])
2643 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2644
2645 if (key_idx > 5)
2646 return -EINVAL;
2647
2648 if (info->attrs[NL80211_ATTR_MAC])
2649 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2650
2651 pairwise = !!mac_addr;
2652 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2653 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2654 if (kt >= NUM_NL80211_KEYTYPES)
2655 return -EINVAL;
2656 if (kt != NL80211_KEYTYPE_GROUP &&
2657 kt != NL80211_KEYTYPE_PAIRWISE)
2658 return -EINVAL;
2659 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2660 }
2661
2662 if (!rdev->ops->get_key)
2663 return -EOPNOTSUPP;
2664
2665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2666 if (!msg)
2667 return -ENOMEM;
2668
2669 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2670 NL80211_CMD_NEW_KEY);
2671 if (!hdr)
2672 return -ENOBUFS;
2673
2674 cookie.msg = msg;
2675 cookie.idx = key_idx;
2676
2677 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2678 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2679 goto nla_put_failure;
2680 if (mac_addr &&
2681 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2682 goto nla_put_failure;
2683
2684 if (pairwise && mac_addr &&
2685 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2686 return -ENOENT;
2687
2688 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2689 get_key_callback);
2690
2691 if (err)
2692 goto free_msg;
2693
2694 if (cookie.error)
2695 goto nla_put_failure;
2696
2697 genlmsg_end(msg, hdr);
2698 return genlmsg_reply(msg, info);
2699
2700 nla_put_failure:
2701 err = -ENOBUFS;
2702 free_msg:
2703 nlmsg_free(msg);
2704 return err;
2705 }
2706
2707 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2708 {
2709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710 struct key_parse key;
2711 int err;
2712 struct net_device *dev = info->user_ptr[1];
2713
2714 err = nl80211_parse_key(info, &key);
2715 if (err)
2716 return err;
2717
2718 if (key.idx < 0)
2719 return -EINVAL;
2720
2721 /* only support setting default key */
2722 if (!key.def && !key.defmgmt)
2723 return -EINVAL;
2724
2725 wdev_lock(dev->ieee80211_ptr);
2726
2727 if (key.def) {
2728 if (!rdev->ops->set_default_key) {
2729 err = -EOPNOTSUPP;
2730 goto out;
2731 }
2732
2733 err = nl80211_key_allowed(dev->ieee80211_ptr);
2734 if (err)
2735 goto out;
2736
2737 err = rdev_set_default_key(rdev, dev, key.idx,
2738 key.def_uni, key.def_multi);
2739
2740 if (err)
2741 goto out;
2742
2743 #ifdef CONFIG_CFG80211_WEXT
2744 dev->ieee80211_ptr->wext.default_key = key.idx;
2745 #endif
2746 } else {
2747 if (key.def_uni || !key.def_multi) {
2748 err = -EINVAL;
2749 goto out;
2750 }
2751
2752 if (!rdev->ops->set_default_mgmt_key) {
2753 err = -EOPNOTSUPP;
2754 goto out;
2755 }
2756
2757 err = nl80211_key_allowed(dev->ieee80211_ptr);
2758 if (err)
2759 goto out;
2760
2761 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2762 if (err)
2763 goto out;
2764
2765 #ifdef CONFIG_CFG80211_WEXT
2766 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2767 #endif
2768 }
2769
2770 out:
2771 wdev_unlock(dev->ieee80211_ptr);
2772
2773 return err;
2774 }
2775
2776 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2777 {
2778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2779 int err;
2780 struct net_device *dev = info->user_ptr[1];
2781 struct key_parse key;
2782 const u8 *mac_addr = NULL;
2783
2784 err = nl80211_parse_key(info, &key);
2785 if (err)
2786 return err;
2787
2788 if (!key.p.key)
2789 return -EINVAL;
2790
2791 if (info->attrs[NL80211_ATTR_MAC])
2792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2793
2794 if (key.type == -1) {
2795 if (mac_addr)
2796 key.type = NL80211_KEYTYPE_PAIRWISE;
2797 else
2798 key.type = NL80211_KEYTYPE_GROUP;
2799 }
2800
2801 /* for now */
2802 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2803 key.type != NL80211_KEYTYPE_GROUP)
2804 return -EINVAL;
2805
2806 if (!rdev->ops->add_key)
2807 return -EOPNOTSUPP;
2808
2809 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2810 key.type == NL80211_KEYTYPE_PAIRWISE,
2811 mac_addr))
2812 return -EINVAL;
2813
2814 wdev_lock(dev->ieee80211_ptr);
2815 err = nl80211_key_allowed(dev->ieee80211_ptr);
2816 if (!err)
2817 err = rdev_add_key(rdev, dev, key.idx,
2818 key.type == NL80211_KEYTYPE_PAIRWISE,
2819 mac_addr, &key.p);
2820 wdev_unlock(dev->ieee80211_ptr);
2821
2822 return err;
2823 }
2824
2825 static int nl80211_del_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 *mac_addr = NULL;
2831 struct key_parse key;
2832
2833 err = nl80211_parse_key(info, &key);
2834 if (err)
2835 return err;
2836
2837 if (info->attrs[NL80211_ATTR_MAC])
2838 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2839
2840 if (key.type == -1) {
2841 if (mac_addr)
2842 key.type = NL80211_KEYTYPE_PAIRWISE;
2843 else
2844 key.type = NL80211_KEYTYPE_GROUP;
2845 }
2846
2847 /* for now */
2848 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2849 key.type != NL80211_KEYTYPE_GROUP)
2850 return -EINVAL;
2851
2852 if (!rdev->ops->del_key)
2853 return -EOPNOTSUPP;
2854
2855 wdev_lock(dev->ieee80211_ptr);
2856 err = nl80211_key_allowed(dev->ieee80211_ptr);
2857
2858 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2859 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2860 err = -ENOENT;
2861
2862 if (!err)
2863 err = rdev_del_key(rdev, dev, key.idx,
2864 key.type == NL80211_KEYTYPE_PAIRWISE,
2865 mac_addr);
2866
2867 #ifdef CONFIG_CFG80211_WEXT
2868 if (!err) {
2869 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2870 dev->ieee80211_ptr->wext.default_key = -1;
2871 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2872 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2873 }
2874 #endif
2875 wdev_unlock(dev->ieee80211_ptr);
2876
2877 return err;
2878 }
2879
2880 /* This function returns an error or the number of nested attributes */
2881 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2882 {
2883 struct nlattr *attr;
2884 int n_entries = 0, tmp;
2885
2886 nla_for_each_nested(attr, nl_attr, tmp) {
2887 if (nla_len(attr) != ETH_ALEN)
2888 return -EINVAL;
2889
2890 n_entries++;
2891 }
2892
2893 return n_entries;
2894 }
2895
2896 /*
2897 * This function parses ACL information and allocates memory for ACL data.
2898 * On successful return, the calling function is responsible to free the
2899 * ACL buffer returned by this function.
2900 */
2901 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2902 struct genl_info *info)
2903 {
2904 enum nl80211_acl_policy acl_policy;
2905 struct nlattr *attr;
2906 struct cfg80211_acl_data *acl;
2907 int i = 0, n_entries, tmp;
2908
2909 if (!wiphy->max_acl_mac_addrs)
2910 return ERR_PTR(-EOPNOTSUPP);
2911
2912 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2913 return ERR_PTR(-EINVAL);
2914
2915 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2916 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2917 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2918 return ERR_PTR(-EINVAL);
2919
2920 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2921 return ERR_PTR(-EINVAL);
2922
2923 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2924 if (n_entries < 0)
2925 return ERR_PTR(n_entries);
2926
2927 if (n_entries > wiphy->max_acl_mac_addrs)
2928 return ERR_PTR(-ENOTSUPP);
2929
2930 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2931 GFP_KERNEL);
2932 if (!acl)
2933 return ERR_PTR(-ENOMEM);
2934
2935 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2936 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2937 i++;
2938 }
2939
2940 acl->n_acl_entries = n_entries;
2941 acl->acl_policy = acl_policy;
2942
2943 return acl;
2944 }
2945
2946 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2947 {
2948 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2949 struct net_device *dev = info->user_ptr[1];
2950 struct cfg80211_acl_data *acl;
2951 int err;
2952
2953 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2954 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2955 return -EOPNOTSUPP;
2956
2957 if (!dev->ieee80211_ptr->beacon_interval)
2958 return -EINVAL;
2959
2960 acl = parse_acl_data(&rdev->wiphy, info);
2961 if (IS_ERR(acl))
2962 return PTR_ERR(acl);
2963
2964 err = rdev_set_mac_acl(rdev, dev, acl);
2965
2966 kfree(acl);
2967
2968 return err;
2969 }
2970
2971 static int nl80211_parse_beacon(struct nlattr *attrs[],
2972 struct cfg80211_beacon_data *bcn)
2973 {
2974 bool haveinfo = false;
2975
2976 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2977 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2978 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2979 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2980 return -EINVAL;
2981
2982 memset(bcn, 0, sizeof(*bcn));
2983
2984 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2985 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2986 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2987 if (!bcn->head_len)
2988 return -EINVAL;
2989 haveinfo = true;
2990 }
2991
2992 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2993 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2994 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2995 haveinfo = true;
2996 }
2997
2998 if (!haveinfo)
2999 return -EINVAL;
3000
3001 if (attrs[NL80211_ATTR_IE]) {
3002 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3003 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3004 }
3005
3006 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3007 bcn->proberesp_ies =
3008 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3009 bcn->proberesp_ies_len =
3010 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3011 }
3012
3013 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3014 bcn->assocresp_ies =
3015 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3016 bcn->assocresp_ies_len =
3017 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3018 }
3019
3020 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3021 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3022 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3023 }
3024
3025 return 0;
3026 }
3027
3028 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3029 struct cfg80211_ap_settings *params)
3030 {
3031 struct wireless_dev *wdev;
3032 bool ret = false;
3033
3034 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3035 if (wdev->iftype != NL80211_IFTYPE_AP &&
3036 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3037 continue;
3038
3039 if (!wdev->preset_chandef.chan)
3040 continue;
3041
3042 params->chandef = wdev->preset_chandef;
3043 ret = true;
3044 break;
3045 }
3046
3047 return ret;
3048 }
3049
3050 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3051 enum nl80211_auth_type auth_type,
3052 enum nl80211_commands cmd)
3053 {
3054 if (auth_type > NL80211_AUTHTYPE_MAX)
3055 return false;
3056
3057 switch (cmd) {
3058 case NL80211_CMD_AUTHENTICATE:
3059 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3060 auth_type == NL80211_AUTHTYPE_SAE)
3061 return false;
3062 return true;
3063 case NL80211_CMD_CONNECT:
3064 case NL80211_CMD_START_AP:
3065 /* SAE not supported yet */
3066 if (auth_type == NL80211_AUTHTYPE_SAE)
3067 return false;
3068 return true;
3069 default:
3070 return false;
3071 }
3072 }
3073
3074 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3075 {
3076 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3077 struct net_device *dev = info->user_ptr[1];
3078 struct wireless_dev *wdev = dev->ieee80211_ptr;
3079 struct cfg80211_ap_settings params;
3080 int err;
3081 u8 radar_detect_width = 0;
3082
3083 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3084 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3085 return -EOPNOTSUPP;
3086
3087 if (!rdev->ops->start_ap)
3088 return -EOPNOTSUPP;
3089
3090 if (wdev->beacon_interval)
3091 return -EALREADY;
3092
3093 memset(&params, 0, sizeof(params));
3094
3095 /* these are required for START_AP */
3096 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3097 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3098 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3099 return -EINVAL;
3100
3101 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3102 if (err)
3103 return err;
3104
3105 params.beacon_interval =
3106 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3107 params.dtim_period =
3108 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3109
3110 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3111 if (err)
3112 return err;
3113
3114 /*
3115 * In theory, some of these attributes should be required here
3116 * but since they were not used when the command was originally
3117 * added, keep them optional for old user space programs to let
3118 * them continue to work with drivers that do not need the
3119 * additional information -- drivers must check!
3120 */
3121 if (info->attrs[NL80211_ATTR_SSID]) {
3122 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3123 params.ssid_len =
3124 nla_len(info->attrs[NL80211_ATTR_SSID]);
3125 if (params.ssid_len == 0 ||
3126 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3127 return -EINVAL;
3128 }
3129
3130 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3131 params.hidden_ssid = nla_get_u32(
3132 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3133 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3134 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3135 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3136 return -EINVAL;
3137 }
3138
3139 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3140
3141 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3142 params.auth_type = nla_get_u32(
3143 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3144 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3145 NL80211_CMD_START_AP))
3146 return -EINVAL;
3147 } else
3148 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3149
3150 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3151 NL80211_MAX_NR_CIPHER_SUITES);
3152 if (err)
3153 return err;
3154
3155 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3156 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3157 return -EOPNOTSUPP;
3158 params.inactivity_timeout = nla_get_u16(
3159 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3160 }
3161
3162 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3164 return -EINVAL;
3165 params.p2p_ctwindow =
3166 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3167 if (params.p2p_ctwindow > 127)
3168 return -EINVAL;
3169 if (params.p2p_ctwindow != 0 &&
3170 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3171 return -EINVAL;
3172 }
3173
3174 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3175 u8 tmp;
3176
3177 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3178 return -EINVAL;
3179 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3180 if (tmp > 1)
3181 return -EINVAL;
3182 params.p2p_opp_ps = tmp;
3183 if (params.p2p_opp_ps != 0 &&
3184 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3185 return -EINVAL;
3186 }
3187
3188 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3189 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3190 if (err)
3191 return err;
3192 } else if (wdev->preset_chandef.chan) {
3193 params.chandef = wdev->preset_chandef;
3194 } else if (!nl80211_get_ap_channel(rdev, &params))
3195 return -EINVAL;
3196
3197 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3198 return -EINVAL;
3199
3200 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3201 if (err < 0)
3202 return err;
3203 if (err) {
3204 radar_detect_width = BIT(params.chandef.width);
3205 params.radar_required = true;
3206 }
3207
3208 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3209 params.chandef.chan,
3210 CHAN_MODE_SHARED,
3211 radar_detect_width);
3212 if (err)
3213 return err;
3214
3215 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3216 params.acl = parse_acl_data(&rdev->wiphy, info);
3217 if (IS_ERR(params.acl))
3218 return PTR_ERR(params.acl);
3219 }
3220
3221 err = rdev_start_ap(rdev, dev, &params);
3222 if (!err) {
3223 wdev->preset_chandef = params.chandef;
3224 wdev->beacon_interval = params.beacon_interval;
3225 wdev->channel = params.chandef.chan;
3226 wdev->ssid_len = params.ssid_len;
3227 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3228 }
3229
3230 kfree(params.acl);
3231
3232 return err;
3233 }
3234
3235 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3236 {
3237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3238 struct net_device *dev = info->user_ptr[1];
3239 struct wireless_dev *wdev = dev->ieee80211_ptr;
3240 struct cfg80211_beacon_data params;
3241 int err;
3242
3243 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3244 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3245 return -EOPNOTSUPP;
3246
3247 if (!rdev->ops->change_beacon)
3248 return -EOPNOTSUPP;
3249
3250 if (!wdev->beacon_interval)
3251 return -EINVAL;
3252
3253 err = nl80211_parse_beacon(info->attrs, &params);
3254 if (err)
3255 return err;
3256
3257 return rdev_change_beacon(rdev, dev, &params);
3258 }
3259
3260 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3261 {
3262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3263 struct net_device *dev = info->user_ptr[1];
3264
3265 return cfg80211_stop_ap(rdev, dev);
3266 }
3267
3268 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3269 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3270 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3271 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3272 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3273 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3274 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3275 };
3276
3277 static int parse_station_flags(struct genl_info *info,
3278 enum nl80211_iftype iftype,
3279 struct station_parameters *params)
3280 {
3281 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3282 struct nlattr *nla;
3283 int flag;
3284
3285 /*
3286 * Try parsing the new attribute first so userspace
3287 * can specify both for older kernels.
3288 */
3289 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3290 if (nla) {
3291 struct nl80211_sta_flag_update *sta_flags;
3292
3293 sta_flags = nla_data(nla);
3294 params->sta_flags_mask = sta_flags->mask;
3295 params->sta_flags_set = sta_flags->set;
3296 params->sta_flags_set &= params->sta_flags_mask;
3297 if ((params->sta_flags_mask |
3298 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3299 return -EINVAL;
3300 return 0;
3301 }
3302
3303 /* if present, parse the old attribute */
3304
3305 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3306 if (!nla)
3307 return 0;
3308
3309 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3310 nla, sta_flags_policy))
3311 return -EINVAL;
3312
3313 /*
3314 * Only allow certain flags for interface types so that
3315 * other attributes are silently ignored. Remember that
3316 * this is backward compatibility code with old userspace
3317 * and shouldn't be hit in other cases anyway.
3318 */
3319 switch (iftype) {
3320 case NL80211_IFTYPE_AP:
3321 case NL80211_IFTYPE_AP_VLAN:
3322 case NL80211_IFTYPE_P2P_GO:
3323 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3324 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3325 BIT(NL80211_STA_FLAG_WME) |
3326 BIT(NL80211_STA_FLAG_MFP);
3327 break;
3328 case NL80211_IFTYPE_P2P_CLIENT:
3329 case NL80211_IFTYPE_STATION:
3330 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3331 BIT(NL80211_STA_FLAG_TDLS_PEER);
3332 break;
3333 case NL80211_IFTYPE_MESH_POINT:
3334 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3335 BIT(NL80211_STA_FLAG_MFP) |
3336 BIT(NL80211_STA_FLAG_AUTHORIZED);
3337 default:
3338 return -EINVAL;
3339 }
3340
3341 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3342 if (flags[flag]) {
3343 params->sta_flags_set |= (1<<flag);
3344
3345 /* no longer support new API additions in old API */
3346 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3347 return -EINVAL;
3348 }
3349 }
3350
3351 return 0;
3352 }
3353
3354 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3355 int attr)
3356 {
3357 struct nlattr *rate;
3358 u32 bitrate;
3359 u16 bitrate_compat;
3360
3361 rate = nla_nest_start(msg, attr);
3362 if (!rate)
3363 return false;
3364
3365 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3366 bitrate = cfg80211_calculate_bitrate(info);
3367 /* report 16-bit bitrate only if we can */
3368 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3369 if (bitrate > 0 &&
3370 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3371 return false;
3372 if (bitrate_compat > 0 &&
3373 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3374 return false;
3375
3376 if (info->flags & RATE_INFO_FLAGS_MCS) {
3377 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3378 return false;
3379 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3380 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3381 return false;
3382 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3383 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3384 return false;
3385 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3386 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3387 return false;
3388 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3389 return false;
3390 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3391 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3392 return false;
3393 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3394 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3395 return false;
3396 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3397 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3398 return false;
3399 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3400 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3401 return false;
3402 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3403 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3404 return false;
3405 }
3406
3407 nla_nest_end(msg, rate);
3408 return true;
3409 }
3410
3411 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3412 int id)
3413 {
3414 void *attr;
3415 int i = 0;
3416
3417 if (!mask)
3418 return true;
3419
3420 attr = nla_nest_start(msg, id);
3421 if (!attr)
3422 return false;
3423
3424 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3425 if (!(mask & BIT(i)))
3426 continue;
3427
3428 if (nla_put_u8(msg, i, signal[i]))
3429 return false;
3430 }
3431
3432 nla_nest_end(msg, attr);
3433
3434 return true;
3435 }
3436
3437 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3438 int flags,
3439 struct cfg80211_registered_device *rdev,
3440 struct net_device *dev,
3441 const u8 *mac_addr, struct station_info *sinfo)
3442 {
3443 void *hdr;
3444 struct nlattr *sinfoattr, *bss_param;
3445
3446 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3447 if (!hdr)
3448 return -1;
3449
3450 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3451 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3452 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3453 goto nla_put_failure;
3454
3455 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3456 if (!sinfoattr)
3457 goto nla_put_failure;
3458 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3459 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3460 sinfo->connected_time))
3461 goto nla_put_failure;
3462 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3463 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3464 sinfo->inactive_time))
3465 goto nla_put_failure;
3466 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3467 STATION_INFO_RX_BYTES64)) &&
3468 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3469 (u32)sinfo->rx_bytes))
3470 goto nla_put_failure;
3471 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3472 STATION_INFO_TX_BYTES64)) &&
3473 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3474 (u32)sinfo->tx_bytes))
3475 goto nla_put_failure;
3476 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3477 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3478 sinfo->rx_bytes))
3479 goto nla_put_failure;
3480 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3481 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3482 sinfo->tx_bytes))
3483 goto nla_put_failure;
3484 if ((sinfo->filled & STATION_INFO_LLID) &&
3485 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3486 goto nla_put_failure;
3487 if ((sinfo->filled & STATION_INFO_PLID) &&
3488 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3489 goto nla_put_failure;
3490 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3491 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3492 sinfo->plink_state))
3493 goto nla_put_failure;
3494 switch (rdev->wiphy.signal_type) {
3495 case CFG80211_SIGNAL_TYPE_MBM:
3496 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3497 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3498 sinfo->signal))
3499 goto nla_put_failure;
3500 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3501 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3502 sinfo->signal_avg))
3503 goto nla_put_failure;
3504 break;
3505 default:
3506 break;
3507 }
3508 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3509 if (!nl80211_put_signal(msg, sinfo->chains,
3510 sinfo->chain_signal,
3511 NL80211_STA_INFO_CHAIN_SIGNAL))
3512 goto nla_put_failure;
3513 }
3514 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3515 if (!nl80211_put_signal(msg, sinfo->chains,
3516 sinfo->chain_signal_avg,
3517 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3518 goto nla_put_failure;
3519 }
3520 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3521 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3522 NL80211_STA_INFO_TX_BITRATE))
3523 goto nla_put_failure;
3524 }
3525 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3526 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3527 NL80211_STA_INFO_RX_BITRATE))
3528 goto nla_put_failure;
3529 }
3530 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3531 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3532 sinfo->rx_packets))
3533 goto nla_put_failure;
3534 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3535 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3536 sinfo->tx_packets))
3537 goto nla_put_failure;
3538 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3539 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3540 sinfo->tx_retries))
3541 goto nla_put_failure;
3542 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3543 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3544 sinfo->tx_failed))
3545 goto nla_put_failure;
3546 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3547 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3548 sinfo->beacon_loss_count))
3549 goto nla_put_failure;
3550 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3551 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3552 sinfo->local_pm))
3553 goto nla_put_failure;
3554 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3555 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3556 sinfo->peer_pm))
3557 goto nla_put_failure;
3558 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3559 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3560 sinfo->nonpeer_pm))
3561 goto nla_put_failure;
3562 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3563 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3564 if (!bss_param)
3565 goto nla_put_failure;
3566
3567 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3568 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3569 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3570 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3571 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3572 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3573 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3574 sinfo->bss_param.dtim_period) ||
3575 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3576 sinfo->bss_param.beacon_interval))
3577 goto nla_put_failure;
3578
3579 nla_nest_end(msg, bss_param);
3580 }
3581 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3582 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3583 sizeof(struct nl80211_sta_flag_update),
3584 &sinfo->sta_flags))
3585 goto nla_put_failure;
3586 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3587 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3588 sinfo->t_offset))
3589 goto nla_put_failure;
3590 nla_nest_end(msg, sinfoattr);
3591
3592 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3593 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3594 sinfo->assoc_req_ies))
3595 goto nla_put_failure;
3596
3597 return genlmsg_end(msg, hdr);
3598
3599 nla_put_failure:
3600 genlmsg_cancel(msg, hdr);
3601 return -EMSGSIZE;
3602 }
3603
3604 static int nl80211_dump_station(struct sk_buff *skb,
3605 struct netlink_callback *cb)
3606 {
3607 struct station_info sinfo;
3608 struct cfg80211_registered_device *dev;
3609 struct wireless_dev *wdev;
3610 u8 mac_addr[ETH_ALEN];
3611 int sta_idx = cb->args[2];
3612 int err;
3613
3614 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3615 if (err)
3616 return err;
3617
3618 if (!wdev->netdev) {
3619 err = -EINVAL;
3620 goto out_err;
3621 }
3622
3623 if (!dev->ops->dump_station) {
3624 err = -EOPNOTSUPP;
3625 goto out_err;
3626 }
3627
3628 while (1) {
3629 memset(&sinfo, 0, sizeof(sinfo));
3630 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3631 mac_addr, &sinfo);
3632 if (err == -ENOENT)
3633 break;
3634 if (err)
3635 goto out_err;
3636
3637 if (nl80211_send_station(skb,
3638 NETLINK_CB(cb->skb).portid,
3639 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3640 dev, wdev->netdev, mac_addr,
3641 &sinfo) < 0)
3642 goto out;
3643
3644 sta_idx++;
3645 }
3646
3647
3648 out:
3649 cb->args[2] = sta_idx;
3650 err = skb->len;
3651 out_err:
3652 nl80211_finish_wdev_dump(dev);
3653
3654 return err;
3655 }
3656
3657 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3658 {
3659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3660 struct net_device *dev = info->user_ptr[1];
3661 struct station_info sinfo;
3662 struct sk_buff *msg;
3663 u8 *mac_addr = NULL;
3664 int err;
3665
3666 memset(&sinfo, 0, sizeof(sinfo));
3667
3668 if (!info->attrs[NL80211_ATTR_MAC])
3669 return -EINVAL;
3670
3671 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3672
3673 if (!rdev->ops->get_station)
3674 return -EOPNOTSUPP;
3675
3676 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3677 if (err)
3678 return err;
3679
3680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3681 if (!msg)
3682 return -ENOMEM;
3683
3684 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3685 rdev, dev, mac_addr, &sinfo) < 0) {
3686 nlmsg_free(msg);
3687 return -ENOBUFS;
3688 }
3689
3690 return genlmsg_reply(msg, info);
3691 }
3692
3693 int cfg80211_check_station_change(struct wiphy *wiphy,
3694 struct station_parameters *params,
3695 enum cfg80211_station_type statype)
3696 {
3697 if (params->listen_interval != -1)
3698 return -EINVAL;
3699 if (params->aid)
3700 return -EINVAL;
3701
3702 /* When you run into this, adjust the code below for the new flag */
3703 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3704
3705 switch (statype) {
3706 case CFG80211_STA_MESH_PEER_KERNEL:
3707 case CFG80211_STA_MESH_PEER_USER:
3708 /*
3709 * No ignoring the TDLS flag here -- the userspace mesh
3710 * code doesn't have the bug of including TDLS in the
3711 * mask everywhere.
3712 */
3713 if (params->sta_flags_mask &
3714 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3715 BIT(NL80211_STA_FLAG_MFP) |
3716 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3717 return -EINVAL;
3718 break;
3719 case CFG80211_STA_TDLS_PEER_SETUP:
3720 case CFG80211_STA_TDLS_PEER_ACTIVE:
3721 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3722 return -EINVAL;
3723 /* ignore since it can't change */
3724 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3725 break;
3726 default:
3727 /* disallow mesh-specific things */
3728 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3729 return -EINVAL;
3730 if (params->local_pm)
3731 return -EINVAL;
3732 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3733 return -EINVAL;
3734 }
3735
3736 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3737 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3738 /* TDLS can't be set, ... */
3739 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3740 return -EINVAL;
3741 /*
3742 * ... but don't bother the driver with it. This works around
3743 * a hostapd/wpa_supplicant issue -- it always includes the
3744 * TLDS_PEER flag in the mask even for AP mode.
3745 */
3746 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3747 }
3748
3749 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3750 /* reject other things that can't change */
3751 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3752 return -EINVAL;
3753 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3754 return -EINVAL;
3755 if (params->supported_rates)
3756 return -EINVAL;
3757 if (params->ext_capab || params->ht_capa || params->vht_capa)
3758 return -EINVAL;
3759 }
3760
3761 if (statype != CFG80211_STA_AP_CLIENT) {
3762 if (params->vlan)
3763 return -EINVAL;
3764 }
3765
3766 switch (statype) {
3767 case CFG80211_STA_AP_MLME_CLIENT:
3768 /* Use this only for authorizing/unauthorizing a station */
3769 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3770 return -EOPNOTSUPP;
3771 break;
3772 case CFG80211_STA_AP_CLIENT:
3773 /* accept only the listed bits */
3774 if (params->sta_flags_mask &
3775 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3776 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3777 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3778 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3779 BIT(NL80211_STA_FLAG_WME) |
3780 BIT(NL80211_STA_FLAG_MFP)))
3781 return -EINVAL;
3782
3783 /* but authenticated/associated only if driver handles it */
3784 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3785 params->sta_flags_mask &
3786 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3787 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3788 return -EINVAL;
3789 break;
3790 case CFG80211_STA_IBSS:
3791 case CFG80211_STA_AP_STA:
3792 /* reject any changes other than AUTHORIZED */
3793 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3794 return -EINVAL;
3795 break;
3796 case CFG80211_STA_TDLS_PEER_SETUP:
3797 /* reject any changes other than AUTHORIZED or WME */
3798 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3799 BIT(NL80211_STA_FLAG_WME)))
3800 return -EINVAL;
3801 /* force (at least) rates when authorizing */
3802 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3803 !params->supported_rates)
3804 return -EINVAL;
3805 break;
3806 case CFG80211_STA_TDLS_PEER_ACTIVE:
3807 /* reject any changes */
3808 return -EINVAL;
3809 case CFG80211_STA_MESH_PEER_KERNEL:
3810 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3811 return -EINVAL;
3812 break;
3813 case CFG80211_STA_MESH_PEER_USER:
3814 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3815 return -EINVAL;
3816 break;
3817 }
3818
3819 return 0;
3820 }
3821 EXPORT_SYMBOL(cfg80211_check_station_change);
3822
3823 /*
3824 * Get vlan interface making sure it is running and on the right wiphy.
3825 */
3826 static struct net_device *get_vlan(struct genl_info *info,
3827 struct cfg80211_registered_device *rdev)
3828 {
3829 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3830 struct net_device *v;
3831 int ret;
3832
3833 if (!vlanattr)
3834 return NULL;
3835
3836 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3837 if (!v)
3838 return ERR_PTR(-ENODEV);
3839
3840 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3841 ret = -EINVAL;
3842 goto error;
3843 }
3844
3845 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3846 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3847 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3848 ret = -EINVAL;
3849 goto error;
3850 }
3851
3852 if (!netif_running(v)) {
3853 ret = -ENETDOWN;
3854 goto error;
3855 }
3856
3857 return v;
3858 error:
3859 dev_put(v);
3860 return ERR_PTR(ret);
3861 }
3862
3863 static struct nla_policy
3864 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3865 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3866 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3867 };
3868
3869 static int nl80211_parse_sta_wme(struct genl_info *info,
3870 struct station_parameters *params)
3871 {
3872 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3873 struct nlattr *nla;
3874 int err;
3875
3876 /* parse WME attributes if present */
3877 if (!info->attrs[NL80211_ATTR_STA_WME])
3878 return 0;
3879
3880 nla = info->attrs[NL80211_ATTR_STA_WME];
3881 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3882 nl80211_sta_wme_policy);
3883 if (err)
3884 return err;
3885
3886 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3887 params->uapsd_queues = nla_get_u8(
3888 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3889 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3890 return -EINVAL;
3891
3892 if (tb[NL80211_STA_WME_MAX_SP])
3893 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3894
3895 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3896 return -EINVAL;
3897
3898 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3899
3900 return 0;
3901 }
3902
3903 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3904 struct station_parameters *params)
3905 {
3906 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3907 params->supported_channels =
3908 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3909 params->supported_channels_len =
3910 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3911 /*
3912 * Need to include at least one (first channel, number of
3913 * channels) tuple for each subband, and must have proper
3914 * tuples for the rest of the data as well.
3915 */
3916 if (params->supported_channels_len < 2)
3917 return -EINVAL;
3918 if (params->supported_channels_len % 2)
3919 return -EINVAL;
3920 }
3921
3922 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3923 params->supported_oper_classes =
3924 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3925 params->supported_oper_classes_len =
3926 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3927 /*
3928 * The value of the Length field of the Supported Operating
3929 * Classes element is between 2 and 253.
3930 */
3931 if (params->supported_oper_classes_len < 2 ||
3932 params->supported_oper_classes_len > 253)
3933 return -EINVAL;
3934 }
3935 return 0;
3936 }
3937
3938 static int nl80211_set_station_tdls(struct genl_info *info,
3939 struct station_parameters *params)
3940 {
3941 int err;
3942 /* Dummy STA entry gets updated once the peer capabilities are known */
3943 if (info->attrs[NL80211_ATTR_PEER_AID])
3944 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3945 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3946 params->ht_capa =
3947 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3948 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3949 params->vht_capa =
3950 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3951
3952 err = nl80211_parse_sta_channel_info(info, params);
3953 if (err)
3954 return err;
3955
3956 return nl80211_parse_sta_wme(info, params);
3957 }
3958
3959 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3960 {
3961 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3962 struct net_device *dev = info->user_ptr[1];
3963 struct station_parameters params;
3964 u8 *mac_addr;
3965 int err;
3966
3967 memset(&params, 0, sizeof(params));
3968
3969 params.listen_interval = -1;
3970
3971 if (!rdev->ops->change_station)
3972 return -EOPNOTSUPP;
3973
3974 if (info->attrs[NL80211_ATTR_STA_AID])
3975 return -EINVAL;
3976
3977 if (!info->attrs[NL80211_ATTR_MAC])
3978 return -EINVAL;
3979
3980 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3981
3982 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3983 params.supported_rates =
3984 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3985 params.supported_rates_len =
3986 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3987 }
3988
3989 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3990 params.capability =
3991 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3992 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3993 }
3994
3995 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3996 params.ext_capab =
3997 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3998 params.ext_capab_len =
3999 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4000 }
4001
4002 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4003 return -EINVAL;
4004
4005 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4006 return -EINVAL;
4007
4008 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4009 params.plink_action =
4010 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4011 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4012 return -EINVAL;
4013 }
4014
4015 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4016 params.plink_state =
4017 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4018 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4019 return -EINVAL;
4020 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4021 }
4022
4023 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4024 enum nl80211_mesh_power_mode pm = nla_get_u32(
4025 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4026
4027 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4028 pm > NL80211_MESH_POWER_MAX)
4029 return -EINVAL;
4030
4031 params.local_pm = pm;
4032 }
4033
4034 /* Include parameters for TDLS peer (will check later) */
4035 err = nl80211_set_station_tdls(info, &params);
4036 if (err)
4037 return err;
4038
4039 params.vlan = get_vlan(info, rdev);
4040 if (IS_ERR(params.vlan))
4041 return PTR_ERR(params.vlan);
4042
4043 switch (dev->ieee80211_ptr->iftype) {
4044 case NL80211_IFTYPE_AP:
4045 case NL80211_IFTYPE_AP_VLAN:
4046 case NL80211_IFTYPE_P2P_GO:
4047 case NL80211_IFTYPE_P2P_CLIENT:
4048 case NL80211_IFTYPE_STATION:
4049 case NL80211_IFTYPE_ADHOC:
4050 case NL80211_IFTYPE_MESH_POINT:
4051 break;
4052 default:
4053 err = -EOPNOTSUPP;
4054 goto out_put_vlan;
4055 }
4056
4057 /* driver will call cfg80211_check_station_change() */
4058 err = rdev_change_station(rdev, dev, mac_addr, &params);
4059
4060 out_put_vlan:
4061 if (params.vlan)
4062 dev_put(params.vlan);
4063
4064 return err;
4065 }
4066
4067 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4068 {
4069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4070 int err;
4071 struct net_device *dev = info->user_ptr[1];
4072 struct station_parameters params;
4073 u8 *mac_addr = NULL;
4074
4075 memset(&params, 0, sizeof(params));
4076
4077 if (!rdev->ops->add_station)
4078 return -EOPNOTSUPP;
4079
4080 if (!info->attrs[NL80211_ATTR_MAC])
4081 return -EINVAL;
4082
4083 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4084 return -EINVAL;
4085
4086 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4087 return -EINVAL;
4088
4089 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4090 !info->attrs[NL80211_ATTR_PEER_AID])
4091 return -EINVAL;
4092
4093 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4094 params.supported_rates =
4095 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4096 params.supported_rates_len =
4097 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4098 params.listen_interval =
4099 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4100
4101 if (info->attrs[NL80211_ATTR_PEER_AID])
4102 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4103 else
4104 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4105 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4106 return -EINVAL;
4107
4108 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4109 params.capability =
4110 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4111 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4112 }
4113
4114 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4115 params.ext_capab =
4116 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4117 params.ext_capab_len =
4118 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4119 }
4120
4121 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4122 params.ht_capa =
4123 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4124
4125 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4126 params.vht_capa =
4127 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4128
4129 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4130 params.plink_action =
4131 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4132 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4133 return -EINVAL;
4134 }
4135
4136 err = nl80211_parse_sta_channel_info(info, &params);
4137 if (err)
4138 return err;
4139
4140 err = nl80211_parse_sta_wme(info, &params);
4141 if (err)
4142 return err;
4143
4144 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4145 return -EINVAL;
4146
4147 /* When you run into this, adjust the code below for the new flag */
4148 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4149
4150 switch (dev->ieee80211_ptr->iftype) {
4151 case NL80211_IFTYPE_AP:
4152 case NL80211_IFTYPE_AP_VLAN:
4153 case NL80211_IFTYPE_P2P_GO:
4154 /* ignore WME attributes if iface/sta is not capable */
4155 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4156 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4157 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4158
4159 /* TDLS peers cannot be added */
4160 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4161 info->attrs[NL80211_ATTR_PEER_AID])
4162 return -EINVAL;
4163 /* but don't bother the driver with it */
4164 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4165
4166 /* allow authenticated/associated only if driver handles it */
4167 if (!(rdev->wiphy.features &
4168 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4169 params.sta_flags_mask &
4170 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4171 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4172 return -EINVAL;
4173
4174 /* must be last in here for error handling */
4175 params.vlan = get_vlan(info, rdev);
4176 if (IS_ERR(params.vlan))
4177 return PTR_ERR(params.vlan);
4178 break;
4179 case NL80211_IFTYPE_MESH_POINT:
4180 /* ignore uAPSD data */
4181 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4182
4183 /* associated is disallowed */
4184 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4185 return -EINVAL;
4186 /* TDLS peers cannot be added */
4187 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4188 info->attrs[NL80211_ATTR_PEER_AID])
4189 return -EINVAL;
4190 break;
4191 case NL80211_IFTYPE_STATION:
4192 case NL80211_IFTYPE_P2P_CLIENT:
4193 /* ignore uAPSD data */
4194 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4195
4196 /* these are disallowed */
4197 if (params.sta_flags_mask &
4198 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4199 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4200 return -EINVAL;
4201 /* Only TDLS peers can be added */
4202 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4203 return -EINVAL;
4204 /* Can only add if TDLS ... */
4205 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4206 return -EOPNOTSUPP;
4207 /* ... with external setup is supported */
4208 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4209 return -EOPNOTSUPP;
4210 /*
4211 * Older wpa_supplicant versions always mark the TDLS peer
4212 * as authorized, but it shouldn't yet be.
4213 */
4214 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4215 break;
4216 default:
4217 return -EOPNOTSUPP;
4218 }
4219
4220 /* be aware of params.vlan when changing code here */
4221
4222 err = rdev_add_station(rdev, dev, mac_addr, &params);
4223
4224 if (params.vlan)
4225 dev_put(params.vlan);
4226 return err;
4227 }
4228
4229 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4230 {
4231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4232 struct net_device *dev = info->user_ptr[1];
4233 u8 *mac_addr = NULL;
4234
4235 if (info->attrs[NL80211_ATTR_MAC])
4236 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4237
4238 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4239 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4240 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4241 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4242 return -EINVAL;
4243
4244 if (!rdev->ops->del_station)
4245 return -EOPNOTSUPP;
4246
4247 return rdev_del_station(rdev, dev, mac_addr);
4248 }
4249
4250 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4251 int flags, struct net_device *dev,
4252 u8 *dst, u8 *next_hop,
4253 struct mpath_info *pinfo)
4254 {
4255 void *hdr;
4256 struct nlattr *pinfoattr;
4257
4258 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4259 if (!hdr)
4260 return -1;
4261
4262 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4263 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4264 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4265 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4266 goto nla_put_failure;
4267
4268 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4269 if (!pinfoattr)
4270 goto nla_put_failure;
4271 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4272 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4273 pinfo->frame_qlen))
4274 goto nla_put_failure;
4275 if (((pinfo->filled & MPATH_INFO_SN) &&
4276 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4277 ((pinfo->filled & MPATH_INFO_METRIC) &&
4278 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4279 pinfo->metric)) ||
4280 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4281 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4282 pinfo->exptime)) ||
4283 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4284 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4285 pinfo->flags)) ||
4286 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4287 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4288 pinfo->discovery_timeout)) ||
4289 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4290 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4291 pinfo->discovery_retries)))
4292 goto nla_put_failure;
4293
4294 nla_nest_end(msg, pinfoattr);
4295
4296 return genlmsg_end(msg, hdr);
4297
4298 nla_put_failure:
4299 genlmsg_cancel(msg, hdr);
4300 return -EMSGSIZE;
4301 }
4302
4303 static int nl80211_dump_mpath(struct sk_buff *skb,
4304 struct netlink_callback *cb)
4305 {
4306 struct mpath_info pinfo;
4307 struct cfg80211_registered_device *dev;
4308 struct wireless_dev *wdev;
4309 u8 dst[ETH_ALEN];
4310 u8 next_hop[ETH_ALEN];
4311 int path_idx = cb->args[2];
4312 int err;
4313
4314 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4315 if (err)
4316 return err;
4317
4318 if (!dev->ops->dump_mpath) {
4319 err = -EOPNOTSUPP;
4320 goto out_err;
4321 }
4322
4323 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4324 err = -EOPNOTSUPP;
4325 goto out_err;
4326 }
4327
4328 while (1) {
4329 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4330 next_hop, &pinfo);
4331 if (err == -ENOENT)
4332 break;
4333 if (err)
4334 goto out_err;
4335
4336 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4337 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4338 wdev->netdev, dst, next_hop,
4339 &pinfo) < 0)
4340 goto out;
4341
4342 path_idx++;
4343 }
4344
4345
4346 out:
4347 cb->args[2] = path_idx;
4348 err = skb->len;
4349 out_err:
4350 nl80211_finish_wdev_dump(dev);
4351 return err;
4352 }
4353
4354 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4355 {
4356 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4357 int err;
4358 struct net_device *dev = info->user_ptr[1];
4359 struct mpath_info pinfo;
4360 struct sk_buff *msg;
4361 u8 *dst = NULL;
4362 u8 next_hop[ETH_ALEN];
4363
4364 memset(&pinfo, 0, sizeof(pinfo));
4365
4366 if (!info->attrs[NL80211_ATTR_MAC])
4367 return -EINVAL;
4368
4369 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4370
4371 if (!rdev->ops->get_mpath)
4372 return -EOPNOTSUPP;
4373
4374 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4375 return -EOPNOTSUPP;
4376
4377 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4378 if (err)
4379 return err;
4380
4381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4382 if (!msg)
4383 return -ENOMEM;
4384
4385 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4386 dev, dst, next_hop, &pinfo) < 0) {
4387 nlmsg_free(msg);
4388 return -ENOBUFS;
4389 }
4390
4391 return genlmsg_reply(msg, info);
4392 }
4393
4394 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4395 {
4396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4397 struct net_device *dev = info->user_ptr[1];
4398 u8 *dst = NULL;
4399 u8 *next_hop = NULL;
4400
4401 if (!info->attrs[NL80211_ATTR_MAC])
4402 return -EINVAL;
4403
4404 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4405 return -EINVAL;
4406
4407 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4408 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4409
4410 if (!rdev->ops->change_mpath)
4411 return -EOPNOTSUPP;
4412
4413 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4414 return -EOPNOTSUPP;
4415
4416 return rdev_change_mpath(rdev, dev, dst, next_hop);
4417 }
4418
4419 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4420 {
4421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4422 struct net_device *dev = info->user_ptr[1];
4423 u8 *dst = NULL;
4424 u8 *next_hop = NULL;
4425
4426 if (!info->attrs[NL80211_ATTR_MAC])
4427 return -EINVAL;
4428
4429 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4430 return -EINVAL;
4431
4432 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4433 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4434
4435 if (!rdev->ops->add_mpath)
4436 return -EOPNOTSUPP;
4437
4438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4439 return -EOPNOTSUPP;
4440
4441 return rdev_add_mpath(rdev, dev, dst, next_hop);
4442 }
4443
4444 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4445 {
4446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4447 struct net_device *dev = info->user_ptr[1];
4448 u8 *dst = NULL;
4449
4450 if (info->attrs[NL80211_ATTR_MAC])
4451 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4452
4453 if (!rdev->ops->del_mpath)
4454 return -EOPNOTSUPP;
4455
4456 return rdev_del_mpath(rdev, dev, dst);
4457 }
4458
4459 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4460 {
4461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4462 struct net_device *dev = info->user_ptr[1];
4463 struct bss_parameters params;
4464
4465 memset(&params, 0, sizeof(params));
4466 /* default to not changing parameters */
4467 params.use_cts_prot = -1;
4468 params.use_short_preamble = -1;
4469 params.use_short_slot_time = -1;
4470 params.ap_isolate = -1;
4471 params.ht_opmode = -1;
4472 params.p2p_ctwindow = -1;
4473 params.p2p_opp_ps = -1;
4474
4475 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4476 params.use_cts_prot =
4477 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4478 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4479 params.use_short_preamble =
4480 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4481 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4482 params.use_short_slot_time =
4483 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4484 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4485 params.basic_rates =
4486 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4487 params.basic_rates_len =
4488 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4489 }
4490 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4491 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4492 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4493 params.ht_opmode =
4494 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4495
4496 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4497 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4498 return -EINVAL;
4499 params.p2p_ctwindow =
4500 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4501 if (params.p2p_ctwindow < 0)
4502 return -EINVAL;
4503 if (params.p2p_ctwindow != 0 &&
4504 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4505 return -EINVAL;
4506 }
4507
4508 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4509 u8 tmp;
4510
4511 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4512 return -EINVAL;
4513 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4514 if (tmp > 1)
4515 return -EINVAL;
4516 params.p2p_opp_ps = tmp;
4517 if (params.p2p_opp_ps &&
4518 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4519 return -EINVAL;
4520 }
4521
4522 if (!rdev->ops->change_bss)
4523 return -EOPNOTSUPP;
4524
4525 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4526 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4527 return -EOPNOTSUPP;
4528
4529 return rdev_change_bss(rdev, dev, &params);
4530 }
4531
4532 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4533 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4534 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4535 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4536 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4537 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4538 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4539 };
4540
4541 static int parse_reg_rule(struct nlattr *tb[],
4542 struct ieee80211_reg_rule *reg_rule)
4543 {
4544 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4545 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4546
4547 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4548 return -EINVAL;
4549 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4550 return -EINVAL;
4551 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4552 return -EINVAL;
4553 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4554 return -EINVAL;
4555 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4556 return -EINVAL;
4557
4558 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4559
4560 freq_range->start_freq_khz =
4561 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4562 freq_range->end_freq_khz =
4563 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4564 freq_range->max_bandwidth_khz =
4565 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4566
4567 power_rule->max_eirp =
4568 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4569
4570 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4571 power_rule->max_antenna_gain =
4572 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4573
4574 return 0;
4575 }
4576
4577 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4578 {
4579 int r;
4580 char *data = NULL;
4581 enum nl80211_user_reg_hint_type user_reg_hint_type;
4582
4583 /*
4584 * You should only get this when cfg80211 hasn't yet initialized
4585 * completely when built-in to the kernel right between the time
4586 * window between nl80211_init() and regulatory_init(), if that is
4587 * even possible.
4588 */
4589 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4590 return -EINPROGRESS;
4591
4592 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4593 return -EINVAL;
4594
4595 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4596
4597 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4598 user_reg_hint_type =
4599 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4600 else
4601 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4602
4603 switch (user_reg_hint_type) {
4604 case NL80211_USER_REG_HINT_USER:
4605 case NL80211_USER_REG_HINT_CELL_BASE:
4606 break;
4607 default:
4608 return -EINVAL;
4609 }
4610
4611 r = regulatory_hint_user(data, user_reg_hint_type);
4612
4613 return r;
4614 }
4615
4616 static int nl80211_get_mesh_config(struct sk_buff *skb,
4617 struct genl_info *info)
4618 {
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct net_device *dev = info->user_ptr[1];
4621 struct wireless_dev *wdev = dev->ieee80211_ptr;
4622 struct mesh_config cur_params;
4623 int err = 0;
4624 void *hdr;
4625 struct nlattr *pinfoattr;
4626 struct sk_buff *msg;
4627
4628 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4629 return -EOPNOTSUPP;
4630
4631 if (!rdev->ops->get_mesh_config)
4632 return -EOPNOTSUPP;
4633
4634 wdev_lock(wdev);
4635 /* If not connected, get default parameters */
4636 if (!wdev->mesh_id_len)
4637 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4638 else
4639 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4640 wdev_unlock(wdev);
4641
4642 if (err)
4643 return err;
4644
4645 /* Draw up a netlink message to send back */
4646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4647 if (!msg)
4648 return -ENOMEM;
4649 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4650 NL80211_CMD_GET_MESH_CONFIG);
4651 if (!hdr)
4652 goto out;
4653 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4654 if (!pinfoattr)
4655 goto nla_put_failure;
4656 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4657 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4658 cur_params.dot11MeshRetryTimeout) ||
4659 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4660 cur_params.dot11MeshConfirmTimeout) ||
4661 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4662 cur_params.dot11MeshHoldingTimeout) ||
4663 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4664 cur_params.dot11MeshMaxPeerLinks) ||
4665 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4666 cur_params.dot11MeshMaxRetries) ||
4667 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4668 cur_params.dot11MeshTTL) ||
4669 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4670 cur_params.element_ttl) ||
4671 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4672 cur_params.auto_open_plinks) ||
4673 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4674 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4675 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4676 cur_params.dot11MeshHWMPmaxPREQretries) ||
4677 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4678 cur_params.path_refresh_time) ||
4679 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4680 cur_params.min_discovery_timeout) ||
4681 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4682 cur_params.dot11MeshHWMPactivePathTimeout) ||
4683 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4684 cur_params.dot11MeshHWMPpreqMinInterval) ||
4685 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4686 cur_params.dot11MeshHWMPperrMinInterval) ||
4687 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4688 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4689 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4690 cur_params.dot11MeshHWMPRootMode) ||
4691 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4692 cur_params.dot11MeshHWMPRannInterval) ||
4693 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4694 cur_params.dot11MeshGateAnnouncementProtocol) ||
4695 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4696 cur_params.dot11MeshForwarding) ||
4697 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4698 cur_params.rssi_threshold) ||
4699 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4700 cur_params.ht_opmode) ||
4701 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4702 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4703 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4704 cur_params.dot11MeshHWMProotInterval) ||
4705 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4706 cur_params.dot11MeshHWMPconfirmationInterval) ||
4707 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4708 cur_params.power_mode) ||
4709 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4710 cur_params.dot11MeshAwakeWindowDuration) ||
4711 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4712 cur_params.plink_timeout))
4713 goto nla_put_failure;
4714 nla_nest_end(msg, pinfoattr);
4715 genlmsg_end(msg, hdr);
4716 return genlmsg_reply(msg, info);
4717
4718 nla_put_failure:
4719 genlmsg_cancel(msg, hdr);
4720 out:
4721 nlmsg_free(msg);
4722 return -ENOBUFS;
4723 }
4724
4725 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4726 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4727 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4728 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4729 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4730 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4731 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4732 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4733 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4734 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4735 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4736 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4737 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4738 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4739 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4740 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4741 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4742 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4743 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4744 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4745 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4746 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4747 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4748 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4749 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4750 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4751 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4752 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4753 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4754 };
4755
4756 static const struct nla_policy
4757 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4758 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4759 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4760 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4761 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4762 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4763 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4764 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4765 .len = IEEE80211_MAX_DATA_LEN },
4766 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4767 };
4768
4769 static int nl80211_parse_mesh_config(struct genl_info *info,
4770 struct mesh_config *cfg,
4771 u32 *mask_out)
4772 {
4773 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4774 u32 mask = 0;
4775
4776 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4777 do { \
4778 if (tb[attr]) { \
4779 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4780 return -EINVAL; \
4781 cfg->param = fn(tb[attr]); \
4782 mask |= (1 << (attr - 1)); \
4783 } \
4784 } while (0)
4785
4786
4787 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4788 return -EINVAL;
4789 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4790 info->attrs[NL80211_ATTR_MESH_CONFIG],
4791 nl80211_meshconf_params_policy))
4792 return -EINVAL;
4793
4794 /* This makes sure that there aren't more than 32 mesh config
4795 * parameters (otherwise our bitfield scheme would not work.) */
4796 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4797
4798 /* Fill in the params struct */
4799 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4800 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4801 nla_get_u16);
4802 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4803 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4804 nla_get_u16);
4805 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4806 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4807 nla_get_u16);
4808 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4809 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4810 nla_get_u16);
4811 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4812 mask, NL80211_MESHCONF_MAX_RETRIES,
4813 nla_get_u8);
4814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4815 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4816 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4817 mask, NL80211_MESHCONF_ELEMENT_TTL,
4818 nla_get_u8);
4819 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4820 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4821 nla_get_u8);
4822 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4823 1, 255, mask,
4824 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4825 nla_get_u32);
4826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4827 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4828 nla_get_u8);
4829 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4830 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4831 nla_get_u32);
4832 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4833 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4834 nla_get_u16);
4835 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4836 1, 65535, mask,
4837 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4838 nla_get_u32);
4839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4840 1, 65535, mask,
4841 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4842 nla_get_u16);
4843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4844 1, 65535, mask,
4845 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4846 nla_get_u16);
4847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4848 dot11MeshHWMPnetDiameterTraversalTime,
4849 1, 65535, mask,
4850 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4851 nla_get_u16);
4852 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4853 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4854 nla_get_u8);
4855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4856 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4857 nla_get_u16);
4858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4859 dot11MeshGateAnnouncementProtocol, 0, 1,
4860 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4861 nla_get_u8);
4862 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4863 mask, NL80211_MESHCONF_FORWARDING,
4864 nla_get_u8);
4865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4866 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4867 nla_get_s32);
4868 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4869 mask, NL80211_MESHCONF_HT_OPMODE,
4870 nla_get_u16);
4871 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4872 1, 65535, mask,
4873 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4874 nla_get_u32);
4875 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4876 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4877 nla_get_u16);
4878 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4879 dot11MeshHWMPconfirmationInterval,
4880 1, 65535, mask,
4881 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4882 nla_get_u16);
4883 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4884 NL80211_MESH_POWER_ACTIVE,
4885 NL80211_MESH_POWER_MAX,
4886 mask, NL80211_MESHCONF_POWER_MODE,
4887 nla_get_u32);
4888 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4889 0, 65535, mask,
4890 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4891 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4892 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4893 nla_get_u32);
4894 if (mask_out)
4895 *mask_out = mask;
4896
4897 return 0;
4898
4899 #undef FILL_IN_MESH_PARAM_IF_SET
4900 }
4901
4902 static int nl80211_parse_mesh_setup(struct genl_info *info,
4903 struct mesh_setup *setup)
4904 {
4905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4906 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4907
4908 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4909 return -EINVAL;
4910 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4911 info->attrs[NL80211_ATTR_MESH_SETUP],
4912 nl80211_mesh_setup_params_policy))
4913 return -EINVAL;
4914
4915 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4916 setup->sync_method =
4917 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4918 IEEE80211_SYNC_METHOD_VENDOR :
4919 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4920
4921 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4922 setup->path_sel_proto =
4923 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4924 IEEE80211_PATH_PROTOCOL_VENDOR :
4925 IEEE80211_PATH_PROTOCOL_HWMP;
4926
4927 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4928 setup->path_metric =
4929 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4930 IEEE80211_PATH_METRIC_VENDOR :
4931 IEEE80211_PATH_METRIC_AIRTIME;
4932
4933
4934 if (tb[NL80211_MESH_SETUP_IE]) {
4935 struct nlattr *ieattr =
4936 tb[NL80211_MESH_SETUP_IE];
4937 if (!is_valid_ie_attr(ieattr))
4938 return -EINVAL;
4939 setup->ie = nla_data(ieattr);
4940 setup->ie_len = nla_len(ieattr);
4941 }
4942 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4943 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4944 return -EINVAL;
4945 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4946 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4947 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4948 if (setup->is_secure)
4949 setup->user_mpm = true;
4950
4951 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4952 if (!setup->user_mpm)
4953 return -EINVAL;
4954 setup->auth_id =
4955 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4956 }
4957
4958 return 0;
4959 }
4960
4961 static int nl80211_update_mesh_config(struct sk_buff *skb,
4962 struct genl_info *info)
4963 {
4964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4965 struct net_device *dev = info->user_ptr[1];
4966 struct wireless_dev *wdev = dev->ieee80211_ptr;
4967 struct mesh_config cfg;
4968 u32 mask;
4969 int err;
4970
4971 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4972 return -EOPNOTSUPP;
4973
4974 if (!rdev->ops->update_mesh_config)
4975 return -EOPNOTSUPP;
4976
4977 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4978 if (err)
4979 return err;
4980
4981 wdev_lock(wdev);
4982 if (!wdev->mesh_id_len)
4983 err = -ENOLINK;
4984
4985 if (!err)
4986 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4987
4988 wdev_unlock(wdev);
4989
4990 return err;
4991 }
4992
4993 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4994 {
4995 const struct ieee80211_regdomain *regdom;
4996 struct sk_buff *msg;
4997 void *hdr = NULL;
4998 struct nlattr *nl_reg_rules;
4999 unsigned int i;
5000
5001 if (!cfg80211_regdomain)
5002 return -EINVAL;
5003
5004 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5005 if (!msg)
5006 return -ENOBUFS;
5007
5008 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5009 NL80211_CMD_GET_REG);
5010 if (!hdr)
5011 goto put_failure;
5012
5013 if (reg_last_request_cell_base() &&
5014 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5015 NL80211_USER_REG_HINT_CELL_BASE))
5016 goto nla_put_failure;
5017
5018 rcu_read_lock();
5019 regdom = rcu_dereference(cfg80211_regdomain);
5020
5021 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5022 (regdom->dfs_region &&
5023 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5024 goto nla_put_failure_rcu;
5025
5026 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5027 if (!nl_reg_rules)
5028 goto nla_put_failure_rcu;
5029
5030 for (i = 0; i < regdom->n_reg_rules; i++) {
5031 struct nlattr *nl_reg_rule;
5032 const struct ieee80211_reg_rule *reg_rule;
5033 const struct ieee80211_freq_range *freq_range;
5034 const struct ieee80211_power_rule *power_rule;
5035
5036 reg_rule = &regdom->reg_rules[i];
5037 freq_range = &reg_rule->freq_range;
5038 power_rule = &reg_rule->power_rule;
5039
5040 nl_reg_rule = nla_nest_start(msg, i);
5041 if (!nl_reg_rule)
5042 goto nla_put_failure_rcu;
5043
5044 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5045 reg_rule->flags) ||
5046 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5047 freq_range->start_freq_khz) ||
5048 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5049 freq_range->end_freq_khz) ||
5050 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5051 freq_range->max_bandwidth_khz) ||
5052 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5053 power_rule->max_antenna_gain) ||
5054 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5055 power_rule->max_eirp))
5056 goto nla_put_failure_rcu;
5057
5058 nla_nest_end(msg, nl_reg_rule);
5059 }
5060 rcu_read_unlock();
5061
5062 nla_nest_end(msg, nl_reg_rules);
5063
5064 genlmsg_end(msg, hdr);
5065 return genlmsg_reply(msg, info);
5066
5067 nla_put_failure_rcu:
5068 rcu_read_unlock();
5069 nla_put_failure:
5070 genlmsg_cancel(msg, hdr);
5071 put_failure:
5072 nlmsg_free(msg);
5073 return -EMSGSIZE;
5074 }
5075
5076 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5077 {
5078 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5079 struct nlattr *nl_reg_rule;
5080 char *alpha2 = NULL;
5081 int rem_reg_rules = 0, r = 0;
5082 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5083 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5084 struct ieee80211_regdomain *rd = NULL;
5085
5086 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5087 return -EINVAL;
5088
5089 if (!info->attrs[NL80211_ATTR_REG_RULES])
5090 return -EINVAL;
5091
5092 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5093
5094 if (info->attrs[NL80211_ATTR_DFS_REGION])
5095 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5096
5097 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5098 rem_reg_rules) {
5099 num_rules++;
5100 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5101 return -EINVAL;
5102 }
5103
5104 if (!reg_is_valid_request(alpha2))
5105 return -EINVAL;
5106
5107 size_of_regd = sizeof(struct ieee80211_regdomain) +
5108 num_rules * sizeof(struct ieee80211_reg_rule);
5109
5110 rd = kzalloc(size_of_regd, GFP_KERNEL);
5111 if (!rd)
5112 return -ENOMEM;
5113
5114 rd->n_reg_rules = num_rules;
5115 rd->alpha2[0] = alpha2[0];
5116 rd->alpha2[1] = alpha2[1];
5117
5118 /*
5119 * Disable DFS master mode if the DFS region was
5120 * not supported or known on this kernel.
5121 */
5122 if (reg_supported_dfs_region(dfs_region))
5123 rd->dfs_region = dfs_region;
5124
5125 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5126 rem_reg_rules) {
5127 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5128 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5129 reg_rule_policy);
5130 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5131 if (r)
5132 goto bad_reg;
5133
5134 rule_idx++;
5135
5136 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5137 r = -EINVAL;
5138 goto bad_reg;
5139 }
5140 }
5141
5142 r = set_regdom(rd);
5143 /* set_regdom took ownership */
5144 rd = NULL;
5145
5146 bad_reg:
5147 kfree(rd);
5148 return r;
5149 }
5150
5151 static int validate_scan_freqs(struct nlattr *freqs)
5152 {
5153 struct nlattr *attr1, *attr2;
5154 int n_channels = 0, tmp1, tmp2;
5155
5156 nla_for_each_nested(attr1, freqs, tmp1) {
5157 n_channels++;
5158 /*
5159 * Some hardware has a limited channel list for
5160 * scanning, and it is pretty much nonsensical
5161 * to scan for a channel twice, so disallow that
5162 * and don't require drivers to check that the
5163 * channel list they get isn't longer than what
5164 * they can scan, as long as they can scan all
5165 * the channels they registered at once.
5166 */
5167 nla_for_each_nested(attr2, freqs, tmp2)
5168 if (attr1 != attr2 &&
5169 nla_get_u32(attr1) == nla_get_u32(attr2))
5170 return 0;
5171 }
5172
5173 return n_channels;
5174 }
5175
5176 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5177 {
5178 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5179 struct wireless_dev *wdev = info->user_ptr[1];
5180 struct cfg80211_scan_request *request;
5181 struct nlattr *attr;
5182 struct wiphy *wiphy;
5183 int err, tmp, n_ssids = 0, n_channels, i;
5184 size_t ie_len;
5185
5186 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5187 return -EINVAL;
5188
5189 wiphy = &rdev->wiphy;
5190
5191 if (!rdev->ops->scan)
5192 return -EOPNOTSUPP;
5193
5194 if (rdev->scan_req) {
5195 err = -EBUSY;
5196 goto unlock;
5197 }
5198
5199 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5200 n_channels = validate_scan_freqs(
5201 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5202 if (!n_channels) {
5203 err = -EINVAL;
5204 goto unlock;
5205 }
5206 } else {
5207 enum ieee80211_band band;
5208 n_channels = 0;
5209
5210 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5211 if (wiphy->bands[band])
5212 n_channels += wiphy->bands[band]->n_channels;
5213 }
5214
5215 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5216 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5217 n_ssids++;
5218
5219 if (n_ssids > wiphy->max_scan_ssids) {
5220 err = -EINVAL;
5221 goto unlock;
5222 }
5223
5224 if (info->attrs[NL80211_ATTR_IE])
5225 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5226 else
5227 ie_len = 0;
5228
5229 if (ie_len > wiphy->max_scan_ie_len) {
5230 err = -EINVAL;
5231 goto unlock;
5232 }
5233
5234 request = kzalloc(sizeof(*request)
5235 + sizeof(*request->ssids) * n_ssids
5236 + sizeof(*request->channels) * n_channels
5237 + ie_len, GFP_KERNEL);
5238 if (!request) {
5239 err = -ENOMEM;
5240 goto unlock;
5241 }
5242
5243 if (n_ssids)
5244 request->ssids = (void *)&request->channels[n_channels];
5245 request->n_ssids = n_ssids;
5246 if (ie_len) {
5247 if (request->ssids)
5248 request->ie = (void *)(request->ssids + n_ssids);
5249 else
5250 request->ie = (void *)(request->channels + n_channels);
5251 }
5252
5253 i = 0;
5254 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5255 /* user specified, bail out if channel not found */
5256 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5257 struct ieee80211_channel *chan;
5258
5259 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5260
5261 if (!chan) {
5262 err = -EINVAL;
5263 goto out_free;
5264 }
5265
5266 /* ignore disabled channels */
5267 if (chan->flags & IEEE80211_CHAN_DISABLED)
5268 continue;
5269
5270 request->channels[i] = chan;
5271 i++;
5272 }
5273 } else {
5274 enum ieee80211_band band;
5275
5276 /* all channels */
5277 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5278 int j;
5279 if (!wiphy->bands[band])
5280 continue;
5281 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5282 struct ieee80211_channel *chan;
5283
5284 chan = &wiphy->bands[band]->channels[j];
5285
5286 if (chan->flags & IEEE80211_CHAN_DISABLED)
5287 continue;
5288
5289 request->channels[i] = chan;
5290 i++;
5291 }
5292 }
5293 }
5294
5295 if (!i) {
5296 err = -EINVAL;
5297 goto out_free;
5298 }
5299
5300 request->n_channels = i;
5301
5302 i = 0;
5303 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5304 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5305 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5306 err = -EINVAL;
5307 goto out_free;
5308 }
5309 request->ssids[i].ssid_len = nla_len(attr);
5310 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5311 i++;
5312 }
5313 }
5314
5315 if (info->attrs[NL80211_ATTR_IE]) {
5316 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5317 memcpy((void *)request->ie,
5318 nla_data(info->attrs[NL80211_ATTR_IE]),
5319 request->ie_len);
5320 }
5321
5322 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5323 if (wiphy->bands[i])
5324 request->rates[i] =
5325 (1 << wiphy->bands[i]->n_bitrates) - 1;
5326
5327 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5328 nla_for_each_nested(attr,
5329 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5330 tmp) {
5331 enum ieee80211_band band = nla_type(attr);
5332
5333 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5334 err = -EINVAL;
5335 goto out_free;
5336 }
5337 err = ieee80211_get_ratemask(wiphy->bands[band],
5338 nla_data(attr),
5339 nla_len(attr),
5340 &request->rates[band]);
5341 if (err)
5342 goto out_free;
5343 }
5344 }
5345
5346 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5347 request->flags = nla_get_u32(
5348 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5349 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5350 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5351 err = -EOPNOTSUPP;
5352 goto out_free;
5353 }
5354 }
5355
5356 request->no_cck =
5357 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5358
5359 request->wdev = wdev;
5360 request->wiphy = &rdev->wiphy;
5361 request->scan_start = jiffies;
5362
5363 rdev->scan_req = request;
5364 err = rdev_scan(rdev, request);
5365
5366 if (!err) {
5367 nl80211_send_scan_start(rdev, wdev);
5368 if (wdev->netdev)
5369 dev_hold(wdev->netdev);
5370 } else {
5371 out_free:
5372 rdev->scan_req = NULL;
5373 kfree(request);
5374 }
5375
5376 unlock:
5377 return err;
5378 }
5379
5380 static int nl80211_start_sched_scan(struct sk_buff *skb,
5381 struct genl_info *info)
5382 {
5383 struct cfg80211_sched_scan_request *request;
5384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5385 struct net_device *dev = info->user_ptr[1];
5386 struct nlattr *attr;
5387 struct wiphy *wiphy;
5388 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5389 u32 interval;
5390 enum ieee80211_band band;
5391 size_t ie_len;
5392 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5393
5394 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5395 !rdev->ops->sched_scan_start)
5396 return -EOPNOTSUPP;
5397
5398 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5399 return -EINVAL;
5400
5401 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5402 return -EINVAL;
5403
5404 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5405 if (interval == 0)
5406 return -EINVAL;
5407
5408 wiphy = &rdev->wiphy;
5409
5410 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5411 n_channels = validate_scan_freqs(
5412 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5413 if (!n_channels)
5414 return -EINVAL;
5415 } else {
5416 n_channels = 0;
5417
5418 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5419 if (wiphy->bands[band])
5420 n_channels += wiphy->bands[band]->n_channels;
5421 }
5422
5423 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5424 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5425 tmp)
5426 n_ssids++;
5427
5428 if (n_ssids > wiphy->max_sched_scan_ssids)
5429 return -EINVAL;
5430
5431 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5432 nla_for_each_nested(attr,
5433 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5434 tmp)
5435 n_match_sets++;
5436
5437 if (n_match_sets > wiphy->max_match_sets)
5438 return -EINVAL;
5439
5440 if (info->attrs[NL80211_ATTR_IE])
5441 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5442 else
5443 ie_len = 0;
5444
5445 if (ie_len > wiphy->max_sched_scan_ie_len)
5446 return -EINVAL;
5447
5448 if (rdev->sched_scan_req) {
5449 err = -EINPROGRESS;
5450 goto out;
5451 }
5452
5453 request = kzalloc(sizeof(*request)
5454 + sizeof(*request->ssids) * n_ssids
5455 + sizeof(*request->match_sets) * n_match_sets
5456 + sizeof(*request->channels) * n_channels
5457 + ie_len, GFP_KERNEL);
5458 if (!request) {
5459 err = -ENOMEM;
5460 goto out;
5461 }
5462
5463 if (n_ssids)
5464 request->ssids = (void *)&request->channels[n_channels];
5465 request->n_ssids = n_ssids;
5466 if (ie_len) {
5467 if (request->ssids)
5468 request->ie = (void *)(request->ssids + n_ssids);
5469 else
5470 request->ie = (void *)(request->channels + n_channels);
5471 }
5472
5473 if (n_match_sets) {
5474 if (request->ie)
5475 request->match_sets = (void *)(request->ie + ie_len);
5476 else if (request->ssids)
5477 request->match_sets =
5478 (void *)(request->ssids + n_ssids);
5479 else
5480 request->match_sets =
5481 (void *)(request->channels + n_channels);
5482 }
5483 request->n_match_sets = n_match_sets;
5484
5485 i = 0;
5486 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5487 /* user specified, bail out if channel not found */
5488 nla_for_each_nested(attr,
5489 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5490 tmp) {
5491 struct ieee80211_channel *chan;
5492
5493 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5494
5495 if (!chan) {
5496 err = -EINVAL;
5497 goto out_free;
5498 }
5499
5500 /* ignore disabled channels */
5501 if (chan->flags & IEEE80211_CHAN_DISABLED)
5502 continue;
5503
5504 request->channels[i] = chan;
5505 i++;
5506 }
5507 } else {
5508 /* all channels */
5509 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5510 int j;
5511 if (!wiphy->bands[band])
5512 continue;
5513 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5514 struct ieee80211_channel *chan;
5515
5516 chan = &wiphy->bands[band]->channels[j];
5517
5518 if (chan->flags & IEEE80211_CHAN_DISABLED)
5519 continue;
5520
5521 request->channels[i] = chan;
5522 i++;
5523 }
5524 }
5525 }
5526
5527 if (!i) {
5528 err = -EINVAL;
5529 goto out_free;
5530 }
5531
5532 request->n_channels = i;
5533
5534 i = 0;
5535 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5536 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5537 tmp) {
5538 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5539 err = -EINVAL;
5540 goto out_free;
5541 }
5542 request->ssids[i].ssid_len = nla_len(attr);
5543 memcpy(request->ssids[i].ssid, nla_data(attr),
5544 nla_len(attr));
5545 i++;
5546 }
5547 }
5548
5549 i = 0;
5550 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5551 nla_for_each_nested(attr,
5552 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5553 tmp) {
5554 struct nlattr *ssid, *rssi;
5555
5556 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5557 nla_data(attr), nla_len(attr),
5558 nl80211_match_policy);
5559 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5560 if (ssid) {
5561 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5562 err = -EINVAL;
5563 goto out_free;
5564 }
5565 memcpy(request->match_sets[i].ssid.ssid,
5566 nla_data(ssid), nla_len(ssid));
5567 request->match_sets[i].ssid.ssid_len =
5568 nla_len(ssid);
5569 }
5570 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5571 if (rssi)
5572 request->rssi_thold = nla_get_u32(rssi);
5573 else
5574 request->rssi_thold =
5575 NL80211_SCAN_RSSI_THOLD_OFF;
5576 i++;
5577 }
5578 }
5579
5580 if (info->attrs[NL80211_ATTR_IE]) {
5581 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5582 memcpy((void *)request->ie,
5583 nla_data(info->attrs[NL80211_ATTR_IE]),
5584 request->ie_len);
5585 }
5586
5587 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5588 request->flags = nla_get_u32(
5589 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5590 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5591 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5592 err = -EOPNOTSUPP;
5593 goto out_free;
5594 }
5595 }
5596
5597 request->dev = dev;
5598 request->wiphy = &rdev->wiphy;
5599 request->interval = interval;
5600 request->scan_start = jiffies;
5601
5602 err = rdev_sched_scan_start(rdev, dev, request);
5603 if (!err) {
5604 rdev->sched_scan_req = request;
5605 nl80211_send_sched_scan(rdev, dev,
5606 NL80211_CMD_START_SCHED_SCAN);
5607 goto out;
5608 }
5609
5610 out_free:
5611 kfree(request);
5612 out:
5613 return err;
5614 }
5615
5616 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5617 struct genl_info *info)
5618 {
5619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5620
5621 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5622 !rdev->ops->sched_scan_stop)
5623 return -EOPNOTSUPP;
5624
5625 return __cfg80211_stop_sched_scan(rdev, false);
5626 }
5627
5628 static int nl80211_start_radar_detection(struct sk_buff *skb,
5629 struct genl_info *info)
5630 {
5631 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5632 struct net_device *dev = info->user_ptr[1];
5633 struct wireless_dev *wdev = dev->ieee80211_ptr;
5634 struct cfg80211_chan_def chandef;
5635 int err;
5636
5637 err = nl80211_parse_chandef(rdev, info, &chandef);
5638 if (err)
5639 return err;
5640
5641 if (netif_carrier_ok(dev))
5642 return -EBUSY;
5643
5644 if (wdev->cac_started)
5645 return -EBUSY;
5646
5647 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5648 if (err < 0)
5649 return err;
5650
5651 if (err == 0)
5652 return -EINVAL;
5653
5654 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5655 return -EINVAL;
5656
5657 if (!rdev->ops->start_radar_detection)
5658 return -EOPNOTSUPP;
5659
5660 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5661 chandef.chan, CHAN_MODE_SHARED,
5662 BIT(chandef.width));
5663 if (err)
5664 return err;
5665
5666 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5667 if (!err) {
5668 wdev->channel = chandef.chan;
5669 wdev->cac_started = true;
5670 wdev->cac_start_time = jiffies;
5671 }
5672 return err;
5673 }
5674
5675 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5676 {
5677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5678 struct net_device *dev = info->user_ptr[1];
5679 struct wireless_dev *wdev = dev->ieee80211_ptr;
5680 struct cfg80211_csa_settings params;
5681 /* csa_attrs is defined static to avoid waste of stack size - this
5682 * function is called under RTNL lock, so this should not be a problem.
5683 */
5684 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5685 u8 radar_detect_width = 0;
5686 int err;
5687 bool need_new_beacon = false;
5688
5689 if (!rdev->ops->channel_switch ||
5690 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5691 return -EOPNOTSUPP;
5692
5693 switch (dev->ieee80211_ptr->iftype) {
5694 case NL80211_IFTYPE_AP:
5695 case NL80211_IFTYPE_P2P_GO:
5696 need_new_beacon = true;
5697
5698 /* useless if AP is not running */
5699 if (!wdev->beacon_interval)
5700 return -EINVAL;
5701 break;
5702 case NL80211_IFTYPE_ADHOC:
5703 case NL80211_IFTYPE_MESH_POINT:
5704 break;
5705 default:
5706 return -EOPNOTSUPP;
5707 }
5708
5709 memset(&params, 0, sizeof(params));
5710
5711 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5712 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5713 return -EINVAL;
5714
5715 /* only important for AP, IBSS and mesh create IEs internally */
5716 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5717 return -EINVAL;
5718
5719 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5720
5721 if (!need_new_beacon)
5722 goto skip_beacons;
5723
5724 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5725 if (err)
5726 return err;
5727
5728 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5729 info->attrs[NL80211_ATTR_CSA_IES],
5730 nl80211_policy);
5731 if (err)
5732 return err;
5733
5734 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5735 if (err)
5736 return err;
5737
5738 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5739 return -EINVAL;
5740
5741 params.counter_offset_beacon =
5742 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5743 if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5744 return -EINVAL;
5745
5746 /* sanity check - counters should be the same */
5747 if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5748 params.count)
5749 return -EINVAL;
5750
5751 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5752 params.counter_offset_presp =
5753 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5754 if (params.counter_offset_presp >=
5755 params.beacon_csa.probe_resp_len)
5756 return -EINVAL;
5757
5758 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5759 params.count)
5760 return -EINVAL;
5761 }
5762
5763 skip_beacons:
5764 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5765 if (err)
5766 return err;
5767
5768 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5769 return -EINVAL;
5770
5771 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5772 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5773 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5774 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5775 &params.chandef);
5776 if (err < 0) {
5777 return err;
5778 } else if (err) {
5779 radar_detect_width = BIT(params.chandef.width);
5780 params.radar_required = true;
5781 }
5782 }
5783
5784 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5785 params.chandef.chan,
5786 CHAN_MODE_SHARED,
5787 radar_detect_width);
5788 if (err)
5789 return err;
5790
5791 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5792 params.block_tx = true;
5793
5794 return rdev_channel_switch(rdev, dev, &params);
5795 }
5796
5797 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5798 u32 seq, int flags,
5799 struct cfg80211_registered_device *rdev,
5800 struct wireless_dev *wdev,
5801 struct cfg80211_internal_bss *intbss)
5802 {
5803 struct cfg80211_bss *res = &intbss->pub;
5804 const struct cfg80211_bss_ies *ies;
5805 void *hdr;
5806 struct nlattr *bss;
5807 bool tsf = false;
5808
5809 ASSERT_WDEV_LOCK(wdev);
5810
5811 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5812 NL80211_CMD_NEW_SCAN_RESULTS);
5813 if (!hdr)
5814 return -1;
5815
5816 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5817
5818 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5819 goto nla_put_failure;
5820 if (wdev->netdev &&
5821 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5822 goto nla_put_failure;
5823 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5824 goto nla_put_failure;
5825
5826 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5827 if (!bss)
5828 goto nla_put_failure;
5829 if ((!is_zero_ether_addr(res->bssid) &&
5830 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5831 goto nla_put_failure;
5832
5833 rcu_read_lock();
5834 ies = rcu_dereference(res->ies);
5835 if (ies) {
5836 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5837 goto fail_unlock_rcu;
5838 tsf = true;
5839 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5840 ies->len, ies->data))
5841 goto fail_unlock_rcu;
5842 }
5843 ies = rcu_dereference(res->beacon_ies);
5844 if (ies) {
5845 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5846 goto fail_unlock_rcu;
5847 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5848 ies->len, ies->data))
5849 goto fail_unlock_rcu;
5850 }
5851 rcu_read_unlock();
5852
5853 if (res->beacon_interval &&
5854 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5855 goto nla_put_failure;
5856 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5857 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5858 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5859 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5860 jiffies_to_msecs(jiffies - intbss->ts)))
5861 goto nla_put_failure;
5862
5863 switch (rdev->wiphy.signal_type) {
5864 case CFG80211_SIGNAL_TYPE_MBM:
5865 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5866 goto nla_put_failure;
5867 break;
5868 case CFG80211_SIGNAL_TYPE_UNSPEC:
5869 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5870 goto nla_put_failure;
5871 break;
5872 default:
5873 break;
5874 }
5875
5876 switch (wdev->iftype) {
5877 case NL80211_IFTYPE_P2P_CLIENT:
5878 case NL80211_IFTYPE_STATION:
5879 if (intbss == wdev->current_bss &&
5880 nla_put_u32(msg, NL80211_BSS_STATUS,
5881 NL80211_BSS_STATUS_ASSOCIATED))
5882 goto nla_put_failure;
5883 break;
5884 case NL80211_IFTYPE_ADHOC:
5885 if (intbss == wdev->current_bss &&
5886 nla_put_u32(msg, NL80211_BSS_STATUS,
5887 NL80211_BSS_STATUS_IBSS_JOINED))
5888 goto nla_put_failure;
5889 break;
5890 default:
5891 break;
5892 }
5893
5894 nla_nest_end(msg, bss);
5895
5896 return genlmsg_end(msg, hdr);
5897
5898 fail_unlock_rcu:
5899 rcu_read_unlock();
5900 nla_put_failure:
5901 genlmsg_cancel(msg, hdr);
5902 return -EMSGSIZE;
5903 }
5904
5905 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5906 {
5907 struct cfg80211_registered_device *rdev;
5908 struct cfg80211_internal_bss *scan;
5909 struct wireless_dev *wdev;
5910 int start = cb->args[2], idx = 0;
5911 int err;
5912
5913 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5914 if (err)
5915 return err;
5916
5917 wdev_lock(wdev);
5918 spin_lock_bh(&rdev->bss_lock);
5919 cfg80211_bss_expire(rdev);
5920
5921 cb->seq = rdev->bss_generation;
5922
5923 list_for_each_entry(scan, &rdev->bss_list, list) {
5924 if (++idx <= start)
5925 continue;
5926 if (nl80211_send_bss(skb, cb,
5927 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5928 rdev, wdev, scan) < 0) {
5929 idx--;
5930 break;
5931 }
5932 }
5933
5934 spin_unlock_bh(&rdev->bss_lock);
5935 wdev_unlock(wdev);
5936
5937 cb->args[2] = idx;
5938 nl80211_finish_wdev_dump(rdev);
5939
5940 return skb->len;
5941 }
5942
5943 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5944 int flags, struct net_device *dev,
5945 struct survey_info *survey)
5946 {
5947 void *hdr;
5948 struct nlattr *infoattr;
5949
5950 hdr = nl80211hdr_put(msg, portid, seq, flags,
5951 NL80211_CMD_NEW_SURVEY_RESULTS);
5952 if (!hdr)
5953 return -ENOMEM;
5954
5955 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5956 goto nla_put_failure;
5957
5958 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5959 if (!infoattr)
5960 goto nla_put_failure;
5961
5962 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5963 survey->channel->center_freq))
5964 goto nla_put_failure;
5965
5966 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5967 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5968 goto nla_put_failure;
5969 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5970 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5971 goto nla_put_failure;
5972 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5973 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5974 survey->channel_time))
5975 goto nla_put_failure;
5976 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5977 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5978 survey->channel_time_busy))
5979 goto nla_put_failure;
5980 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5981 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5982 survey->channel_time_ext_busy))
5983 goto nla_put_failure;
5984 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5985 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5986 survey->channel_time_rx))
5987 goto nla_put_failure;
5988 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5989 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5990 survey->channel_time_tx))
5991 goto nla_put_failure;
5992
5993 nla_nest_end(msg, infoattr);
5994
5995 return genlmsg_end(msg, hdr);
5996
5997 nla_put_failure:
5998 genlmsg_cancel(msg, hdr);
5999 return -EMSGSIZE;
6000 }
6001
6002 static int nl80211_dump_survey(struct sk_buff *skb,
6003 struct netlink_callback *cb)
6004 {
6005 struct survey_info survey;
6006 struct cfg80211_registered_device *dev;
6007 struct wireless_dev *wdev;
6008 int survey_idx = cb->args[2];
6009 int res;
6010
6011 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6012 if (res)
6013 return res;
6014
6015 if (!wdev->netdev) {
6016 res = -EINVAL;
6017 goto out_err;
6018 }
6019
6020 if (!dev->ops->dump_survey) {
6021 res = -EOPNOTSUPP;
6022 goto out_err;
6023 }
6024
6025 while (1) {
6026 struct ieee80211_channel *chan;
6027
6028 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6029 if (res == -ENOENT)
6030 break;
6031 if (res)
6032 goto out_err;
6033
6034 /* Survey without a channel doesn't make sense */
6035 if (!survey.channel) {
6036 res = -EINVAL;
6037 goto out;
6038 }
6039
6040 chan = ieee80211_get_channel(&dev->wiphy,
6041 survey.channel->center_freq);
6042 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6043 survey_idx++;
6044 continue;
6045 }
6046
6047 if (nl80211_send_survey(skb,
6048 NETLINK_CB(cb->skb).portid,
6049 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6050 wdev->netdev, &survey) < 0)
6051 goto out;
6052 survey_idx++;
6053 }
6054
6055 out:
6056 cb->args[2] = survey_idx;
6057 res = skb->len;
6058 out_err:
6059 nl80211_finish_wdev_dump(dev);
6060 return res;
6061 }
6062
6063 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6064 {
6065 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6066 NL80211_WPA_VERSION_2));
6067 }
6068
6069 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6070 {
6071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6072 struct net_device *dev = info->user_ptr[1];
6073 struct ieee80211_channel *chan;
6074 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6075 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6076 enum nl80211_auth_type auth_type;
6077 struct key_parse key;
6078 bool local_state_change;
6079
6080 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6081 return -EINVAL;
6082
6083 if (!info->attrs[NL80211_ATTR_MAC])
6084 return -EINVAL;
6085
6086 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6087 return -EINVAL;
6088
6089 if (!info->attrs[NL80211_ATTR_SSID])
6090 return -EINVAL;
6091
6092 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6093 return -EINVAL;
6094
6095 err = nl80211_parse_key(info, &key);
6096 if (err)
6097 return err;
6098
6099 if (key.idx >= 0) {
6100 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6101 return -EINVAL;
6102 if (!key.p.key || !key.p.key_len)
6103 return -EINVAL;
6104 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6105 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6106 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6107 key.p.key_len != WLAN_KEY_LEN_WEP104))
6108 return -EINVAL;
6109 if (key.idx > 4)
6110 return -EINVAL;
6111 } else {
6112 key.p.key_len = 0;
6113 key.p.key = NULL;
6114 }
6115
6116 if (key.idx >= 0) {
6117 int i;
6118 bool ok = false;
6119 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6120 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6121 ok = true;
6122 break;
6123 }
6124 }
6125 if (!ok)
6126 return -EINVAL;
6127 }
6128
6129 if (!rdev->ops->auth)
6130 return -EOPNOTSUPP;
6131
6132 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6133 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6134 return -EOPNOTSUPP;
6135
6136 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6137 chan = ieee80211_get_channel(&rdev->wiphy,
6138 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6139 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6140 return -EINVAL;
6141
6142 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6143 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6144
6145 if (info->attrs[NL80211_ATTR_IE]) {
6146 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6147 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6148 }
6149
6150 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6151 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6152 return -EINVAL;
6153
6154 if (auth_type == NL80211_AUTHTYPE_SAE &&
6155 !info->attrs[NL80211_ATTR_SAE_DATA])
6156 return -EINVAL;
6157
6158 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6159 if (auth_type != NL80211_AUTHTYPE_SAE)
6160 return -EINVAL;
6161 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6162 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6163 /* need to include at least Auth Transaction and Status Code */
6164 if (sae_data_len < 4)
6165 return -EINVAL;
6166 }
6167
6168 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6169
6170 /*
6171 * Since we no longer track auth state, ignore
6172 * requests to only change local state.
6173 */
6174 if (local_state_change)
6175 return 0;
6176
6177 wdev_lock(dev->ieee80211_ptr);
6178 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6179 ssid, ssid_len, ie, ie_len,
6180 key.p.key, key.p.key_len, key.idx,
6181 sae_data, sae_data_len);
6182 wdev_unlock(dev->ieee80211_ptr);
6183 return err;
6184 }
6185
6186 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6187 struct genl_info *info,
6188 struct cfg80211_crypto_settings *settings,
6189 int cipher_limit)
6190 {
6191 memset(settings, 0, sizeof(*settings));
6192
6193 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6194
6195 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6196 u16 proto;
6197 proto = nla_get_u16(
6198 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6199 settings->control_port_ethertype = cpu_to_be16(proto);
6200 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6201 proto != ETH_P_PAE)
6202 return -EINVAL;
6203 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6204 settings->control_port_no_encrypt = true;
6205 } else
6206 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6207
6208 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6209 void *data;
6210 int len, i;
6211
6212 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6213 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6214 settings->n_ciphers_pairwise = len / sizeof(u32);
6215
6216 if (len % sizeof(u32))
6217 return -EINVAL;
6218
6219 if (settings->n_ciphers_pairwise > cipher_limit)
6220 return -EINVAL;
6221
6222 memcpy(settings->ciphers_pairwise, data, len);
6223
6224 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6225 if (!cfg80211_supported_cipher_suite(
6226 &rdev->wiphy,
6227 settings->ciphers_pairwise[i]))
6228 return -EINVAL;
6229 }
6230
6231 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6232 settings->cipher_group =
6233 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6234 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6235 settings->cipher_group))
6236 return -EINVAL;
6237 }
6238
6239 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6240 settings->wpa_versions =
6241 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6242 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6243 return -EINVAL;
6244 }
6245
6246 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6247 void *data;
6248 int len;
6249
6250 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6251 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6252 settings->n_akm_suites = len / sizeof(u32);
6253
6254 if (len % sizeof(u32))
6255 return -EINVAL;
6256
6257 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6258 return -EINVAL;
6259
6260 memcpy(settings->akm_suites, data, len);
6261 }
6262
6263 return 0;
6264 }
6265
6266 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6267 {
6268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6269 struct net_device *dev = info->user_ptr[1];
6270 struct ieee80211_channel *chan;
6271 struct cfg80211_assoc_request req = {};
6272 const u8 *bssid, *ssid;
6273 int err, ssid_len = 0;
6274
6275 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6276 return -EINVAL;
6277
6278 if (!info->attrs[NL80211_ATTR_MAC] ||
6279 !info->attrs[NL80211_ATTR_SSID] ||
6280 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6281 return -EINVAL;
6282
6283 if (!rdev->ops->assoc)
6284 return -EOPNOTSUPP;
6285
6286 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6288 return -EOPNOTSUPP;
6289
6290 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6291
6292 chan = ieee80211_get_channel(&rdev->wiphy,
6293 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6294 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6295 return -EINVAL;
6296
6297 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6298 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6299
6300 if (info->attrs[NL80211_ATTR_IE]) {
6301 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6302 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6303 }
6304
6305 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6306 enum nl80211_mfp mfp =
6307 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6308 if (mfp == NL80211_MFP_REQUIRED)
6309 req.use_mfp = true;
6310 else if (mfp != NL80211_MFP_NO)
6311 return -EINVAL;
6312 }
6313
6314 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6315 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6316
6317 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6318 req.flags |= ASSOC_REQ_DISABLE_HT;
6319
6320 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6321 memcpy(&req.ht_capa_mask,
6322 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6323 sizeof(req.ht_capa_mask));
6324
6325 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6326 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6327 return -EINVAL;
6328 memcpy(&req.ht_capa,
6329 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6330 sizeof(req.ht_capa));
6331 }
6332
6333 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6334 req.flags |= ASSOC_REQ_DISABLE_VHT;
6335
6336 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6337 memcpy(&req.vht_capa_mask,
6338 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6339 sizeof(req.vht_capa_mask));
6340
6341 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6342 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6343 return -EINVAL;
6344 memcpy(&req.vht_capa,
6345 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6346 sizeof(req.vht_capa));
6347 }
6348
6349 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6350 if (!err) {
6351 wdev_lock(dev->ieee80211_ptr);
6352 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6353 ssid, ssid_len, &req);
6354 wdev_unlock(dev->ieee80211_ptr);
6355 }
6356
6357 return err;
6358 }
6359
6360 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6361 {
6362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6363 struct net_device *dev = info->user_ptr[1];
6364 const u8 *ie = NULL, *bssid;
6365 int ie_len = 0, err;
6366 u16 reason_code;
6367 bool local_state_change;
6368
6369 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6370 return -EINVAL;
6371
6372 if (!info->attrs[NL80211_ATTR_MAC])
6373 return -EINVAL;
6374
6375 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6376 return -EINVAL;
6377
6378 if (!rdev->ops->deauth)
6379 return -EOPNOTSUPP;
6380
6381 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6382 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6383 return -EOPNOTSUPP;
6384
6385 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6386
6387 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6388 if (reason_code == 0) {
6389 /* Reason Code 0 is reserved */
6390 return -EINVAL;
6391 }
6392
6393 if (info->attrs[NL80211_ATTR_IE]) {
6394 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6395 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6396 }
6397
6398 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6399
6400 wdev_lock(dev->ieee80211_ptr);
6401 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6402 local_state_change);
6403 wdev_unlock(dev->ieee80211_ptr);
6404 return err;
6405 }
6406
6407 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6408 {
6409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6410 struct net_device *dev = info->user_ptr[1];
6411 const u8 *ie = NULL, *bssid;
6412 int ie_len = 0, err;
6413 u16 reason_code;
6414 bool local_state_change;
6415
6416 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6417 return -EINVAL;
6418
6419 if (!info->attrs[NL80211_ATTR_MAC])
6420 return -EINVAL;
6421
6422 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6423 return -EINVAL;
6424
6425 if (!rdev->ops->disassoc)
6426 return -EOPNOTSUPP;
6427
6428 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6429 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6430 return -EOPNOTSUPP;
6431
6432 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6433
6434 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6435 if (reason_code == 0) {
6436 /* Reason Code 0 is reserved */
6437 return -EINVAL;
6438 }
6439
6440 if (info->attrs[NL80211_ATTR_IE]) {
6441 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6442 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6443 }
6444
6445 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6446
6447 wdev_lock(dev->ieee80211_ptr);
6448 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6449 local_state_change);
6450 wdev_unlock(dev->ieee80211_ptr);
6451 return err;
6452 }
6453
6454 static bool
6455 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6456 int mcast_rate[IEEE80211_NUM_BANDS],
6457 int rateval)
6458 {
6459 struct wiphy *wiphy = &rdev->wiphy;
6460 bool found = false;
6461 int band, i;
6462
6463 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6464 struct ieee80211_supported_band *sband;
6465
6466 sband = wiphy->bands[band];
6467 if (!sband)
6468 continue;
6469
6470 for (i = 0; i < sband->n_bitrates; i++) {
6471 if (sband->bitrates[i].bitrate == rateval) {
6472 mcast_rate[band] = i + 1;
6473 found = true;
6474 break;
6475 }
6476 }
6477 }
6478
6479 return found;
6480 }
6481
6482 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6483 {
6484 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6485 struct net_device *dev = info->user_ptr[1];
6486 struct cfg80211_ibss_params ibss;
6487 struct wiphy *wiphy;
6488 struct cfg80211_cached_keys *connkeys = NULL;
6489 int err;
6490
6491 memset(&ibss, 0, sizeof(ibss));
6492
6493 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6494 return -EINVAL;
6495
6496 if (!info->attrs[NL80211_ATTR_SSID] ||
6497 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6498 return -EINVAL;
6499
6500 ibss.beacon_interval = 100;
6501
6502 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6503 ibss.beacon_interval =
6504 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6505 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6506 return -EINVAL;
6507 }
6508
6509 if (!rdev->ops->join_ibss)
6510 return -EOPNOTSUPP;
6511
6512 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6513 return -EOPNOTSUPP;
6514
6515 wiphy = &rdev->wiphy;
6516
6517 if (info->attrs[NL80211_ATTR_MAC]) {
6518 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6519
6520 if (!is_valid_ether_addr(ibss.bssid))
6521 return -EINVAL;
6522 }
6523 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6524 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6525
6526 if (info->attrs[NL80211_ATTR_IE]) {
6527 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6528 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6529 }
6530
6531 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6532 if (err)
6533 return err;
6534
6535 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6536 return -EINVAL;
6537
6538 switch (ibss.chandef.width) {
6539 case NL80211_CHAN_WIDTH_5:
6540 case NL80211_CHAN_WIDTH_10:
6541 case NL80211_CHAN_WIDTH_20_NOHT:
6542 break;
6543 case NL80211_CHAN_WIDTH_20:
6544 case NL80211_CHAN_WIDTH_40:
6545 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6546 break;
6547 default:
6548 return -EINVAL;
6549 }
6550
6551 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6552 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6553
6554 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6555 u8 *rates =
6556 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6557 int n_rates =
6558 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6559 struct ieee80211_supported_band *sband =
6560 wiphy->bands[ibss.chandef.chan->band];
6561
6562 err = ieee80211_get_ratemask(sband, rates, n_rates,
6563 &ibss.basic_rates);
6564 if (err)
6565 return err;
6566 }
6567
6568 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6569 memcpy(&ibss.ht_capa_mask,
6570 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6571 sizeof(ibss.ht_capa_mask));
6572
6573 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6574 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6575 return -EINVAL;
6576 memcpy(&ibss.ht_capa,
6577 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6578 sizeof(ibss.ht_capa));
6579 }
6580
6581 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6582 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6583 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6584 return -EINVAL;
6585
6586 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6587 bool no_ht = false;
6588
6589 connkeys = nl80211_parse_connkeys(rdev,
6590 info->attrs[NL80211_ATTR_KEYS],
6591 &no_ht);
6592 if (IS_ERR(connkeys))
6593 return PTR_ERR(connkeys);
6594
6595 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6596 no_ht) {
6597 kfree(connkeys);
6598 return -EINVAL;
6599 }
6600 }
6601
6602 ibss.control_port =
6603 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6604
6605 ibss.userspace_handles_dfs =
6606 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6607
6608 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6609 if (err)
6610 kfree(connkeys);
6611 return err;
6612 }
6613
6614 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6615 {
6616 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6617 struct net_device *dev = info->user_ptr[1];
6618
6619 if (!rdev->ops->leave_ibss)
6620 return -EOPNOTSUPP;
6621
6622 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6623 return -EOPNOTSUPP;
6624
6625 return cfg80211_leave_ibss(rdev, dev, false);
6626 }
6627
6628 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6629 {
6630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6631 struct net_device *dev = info->user_ptr[1];
6632 int mcast_rate[IEEE80211_NUM_BANDS];
6633 u32 nla_rate;
6634 int err;
6635
6636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6637 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6638 return -EOPNOTSUPP;
6639
6640 if (!rdev->ops->set_mcast_rate)
6641 return -EOPNOTSUPP;
6642
6643 memset(mcast_rate, 0, sizeof(mcast_rate));
6644
6645 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6646 return -EINVAL;
6647
6648 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6649 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6650 return -EINVAL;
6651
6652 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6653
6654 return err;
6655 }
6656
6657
6658 #ifdef CONFIG_NL80211_TESTMODE
6659 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6660 .name = "testmode",
6661 };
6662
6663 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6664 {
6665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6666 struct wireless_dev *wdev =
6667 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6668 int err;
6669
6670 if (!rdev->ops->testmode_cmd)
6671 return -EOPNOTSUPP;
6672
6673 if (IS_ERR(wdev)) {
6674 err = PTR_ERR(wdev);
6675 if (err != -EINVAL)
6676 return err;
6677 wdev = NULL;
6678 } else if (wdev->wiphy != &rdev->wiphy) {
6679 return -EINVAL;
6680 }
6681
6682 if (!info->attrs[NL80211_ATTR_TESTDATA])
6683 return -EINVAL;
6684
6685 rdev->testmode_info = info;
6686 err = rdev_testmode_cmd(rdev, wdev,
6687 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6688 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6689 rdev->testmode_info = NULL;
6690
6691 return err;
6692 }
6693
6694 static int nl80211_testmode_dump(struct sk_buff *skb,
6695 struct netlink_callback *cb)
6696 {
6697 struct cfg80211_registered_device *rdev;
6698 int err;
6699 long phy_idx;
6700 void *data = NULL;
6701 int data_len = 0;
6702
6703 rtnl_lock();
6704
6705 if (cb->args[0]) {
6706 /*
6707 * 0 is a valid index, but not valid for args[0],
6708 * so we need to offset by 1.
6709 */
6710 phy_idx = cb->args[0] - 1;
6711 } else {
6712 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6713 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6714 nl80211_policy);
6715 if (err)
6716 goto out_err;
6717
6718 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6719 nl80211_fam.attrbuf);
6720 if (IS_ERR(rdev)) {
6721 err = PTR_ERR(rdev);
6722 goto out_err;
6723 }
6724 phy_idx = rdev->wiphy_idx;
6725 rdev = NULL;
6726
6727 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6728 cb->args[1] =
6729 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6730 }
6731
6732 if (cb->args[1]) {
6733 data = nla_data((void *)cb->args[1]);
6734 data_len = nla_len((void *)cb->args[1]);
6735 }
6736
6737 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6738 if (!rdev) {
6739 err = -ENOENT;
6740 goto out_err;
6741 }
6742
6743 if (!rdev->ops->testmode_dump) {
6744 err = -EOPNOTSUPP;
6745 goto out_err;
6746 }
6747
6748 while (1) {
6749 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6750 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6751 NL80211_CMD_TESTMODE);
6752 struct nlattr *tmdata;
6753
6754 if (!hdr)
6755 break;
6756
6757 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6758 genlmsg_cancel(skb, hdr);
6759 break;
6760 }
6761
6762 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6763 if (!tmdata) {
6764 genlmsg_cancel(skb, hdr);
6765 break;
6766 }
6767 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6768 nla_nest_end(skb, tmdata);
6769
6770 if (err == -ENOBUFS || err == -ENOENT) {
6771 genlmsg_cancel(skb, hdr);
6772 break;
6773 } else if (err) {
6774 genlmsg_cancel(skb, hdr);
6775 goto out_err;
6776 }
6777
6778 genlmsg_end(skb, hdr);
6779 }
6780
6781 err = skb->len;
6782 /* see above */
6783 cb->args[0] = phy_idx + 1;
6784 out_err:
6785 rtnl_unlock();
6786 return err;
6787 }
6788
6789 static struct sk_buff *
6790 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6791 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6792 {
6793 struct sk_buff *skb;
6794 void *hdr;
6795 struct nlattr *data;
6796
6797 skb = nlmsg_new(approxlen + 100, gfp);
6798 if (!skb)
6799 return NULL;
6800
6801 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6802 if (!hdr) {
6803 kfree_skb(skb);
6804 return NULL;
6805 }
6806
6807 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6808 goto nla_put_failure;
6809 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6810
6811 ((void **)skb->cb)[0] = rdev;
6812 ((void **)skb->cb)[1] = hdr;
6813 ((void **)skb->cb)[2] = data;
6814
6815 return skb;
6816
6817 nla_put_failure:
6818 kfree_skb(skb);
6819 return NULL;
6820 }
6821
6822 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6823 int approxlen)
6824 {
6825 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6826
6827 if (WARN_ON(!rdev->testmode_info))
6828 return NULL;
6829
6830 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6831 rdev->testmode_info->snd_portid,
6832 rdev->testmode_info->snd_seq,
6833 GFP_KERNEL);
6834 }
6835 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6836
6837 int cfg80211_testmode_reply(struct sk_buff *skb)
6838 {
6839 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6840 void *hdr = ((void **)skb->cb)[1];
6841 struct nlattr *data = ((void **)skb->cb)[2];
6842
6843 if (WARN_ON(!rdev->testmode_info)) {
6844 kfree_skb(skb);
6845 return -EINVAL;
6846 }
6847
6848 nla_nest_end(skb, data);
6849 genlmsg_end(skb, hdr);
6850 return genlmsg_reply(skb, rdev->testmode_info);
6851 }
6852 EXPORT_SYMBOL(cfg80211_testmode_reply);
6853
6854 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6855 int approxlen, gfp_t gfp)
6856 {
6857 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6858
6859 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6860 }
6861 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6862
6863 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6864 {
6865 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6866 void *hdr = ((void **)skb->cb)[1];
6867 struct nlattr *data = ((void **)skb->cb)[2];
6868
6869 nla_nest_end(skb, data);
6870 genlmsg_end(skb, hdr);
6871 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6872 nl80211_testmode_mcgrp.id, gfp);
6873 }
6874 EXPORT_SYMBOL(cfg80211_testmode_event);
6875 #endif
6876
6877 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6878 {
6879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6880 struct net_device *dev = info->user_ptr[1];
6881 struct cfg80211_connect_params connect;
6882 struct wiphy *wiphy;
6883 struct cfg80211_cached_keys *connkeys = NULL;
6884 int err;
6885
6886 memset(&connect, 0, sizeof(connect));
6887
6888 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6889 return -EINVAL;
6890
6891 if (!info->attrs[NL80211_ATTR_SSID] ||
6892 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6893 return -EINVAL;
6894
6895 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6896 connect.auth_type =
6897 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6898 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6899 NL80211_CMD_CONNECT))
6900 return -EINVAL;
6901 } else
6902 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6903
6904 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6905
6906 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6907 NL80211_MAX_NR_CIPHER_SUITES);
6908 if (err)
6909 return err;
6910
6911 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6912 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6913 return -EOPNOTSUPP;
6914
6915 wiphy = &rdev->wiphy;
6916
6917 connect.bg_scan_period = -1;
6918 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6919 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6920 connect.bg_scan_period =
6921 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6922 }
6923
6924 if (info->attrs[NL80211_ATTR_MAC])
6925 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6926 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6927 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6928
6929 if (info->attrs[NL80211_ATTR_IE]) {
6930 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6931 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6932 }
6933
6934 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6935 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6936 if (connect.mfp != NL80211_MFP_REQUIRED &&
6937 connect.mfp != NL80211_MFP_NO)
6938 return -EINVAL;
6939 } else {
6940 connect.mfp = NL80211_MFP_NO;
6941 }
6942
6943 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6944 connect.channel =
6945 ieee80211_get_channel(wiphy,
6946 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6947 if (!connect.channel ||
6948 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6949 return -EINVAL;
6950 }
6951
6952 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6953 connkeys = nl80211_parse_connkeys(rdev,
6954 info->attrs[NL80211_ATTR_KEYS], NULL);
6955 if (IS_ERR(connkeys))
6956 return PTR_ERR(connkeys);
6957 }
6958
6959 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6960 connect.flags |= ASSOC_REQ_DISABLE_HT;
6961
6962 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6963 memcpy(&connect.ht_capa_mask,
6964 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6965 sizeof(connect.ht_capa_mask));
6966
6967 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6968 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6969 kfree(connkeys);
6970 return -EINVAL;
6971 }
6972 memcpy(&connect.ht_capa,
6973 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6974 sizeof(connect.ht_capa));
6975 }
6976
6977 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6978 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6979
6980 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6981 memcpy(&connect.vht_capa_mask,
6982 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6983 sizeof(connect.vht_capa_mask));
6984
6985 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6986 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6987 kfree(connkeys);
6988 return -EINVAL;
6989 }
6990 memcpy(&connect.vht_capa,
6991 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6992 sizeof(connect.vht_capa));
6993 }
6994
6995 wdev_lock(dev->ieee80211_ptr);
6996 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6997 wdev_unlock(dev->ieee80211_ptr);
6998 if (err)
6999 kfree(connkeys);
7000 return err;
7001 }
7002
7003 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7004 {
7005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006 struct net_device *dev = info->user_ptr[1];
7007 u16 reason;
7008 int ret;
7009
7010 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7011 reason = WLAN_REASON_DEAUTH_LEAVING;
7012 else
7013 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7014
7015 if (reason == 0)
7016 return -EINVAL;
7017
7018 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7019 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7020 return -EOPNOTSUPP;
7021
7022 wdev_lock(dev->ieee80211_ptr);
7023 ret = cfg80211_disconnect(rdev, dev, reason, true);
7024 wdev_unlock(dev->ieee80211_ptr);
7025 return ret;
7026 }
7027
7028 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7029 {
7030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7031 struct net *net;
7032 int err;
7033 u32 pid;
7034
7035 if (!info->attrs[NL80211_ATTR_PID])
7036 return -EINVAL;
7037
7038 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7039
7040 net = get_net_ns_by_pid(pid);
7041 if (IS_ERR(net))
7042 return PTR_ERR(net);
7043
7044 err = 0;
7045
7046 /* check if anything to do */
7047 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7048 err = cfg80211_switch_netns(rdev, net);
7049
7050 put_net(net);
7051 return err;
7052 }
7053
7054 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7055 {
7056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7057 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7058 struct cfg80211_pmksa *pmksa) = NULL;
7059 struct net_device *dev = info->user_ptr[1];
7060 struct cfg80211_pmksa pmksa;
7061
7062 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7063
7064 if (!info->attrs[NL80211_ATTR_MAC])
7065 return -EINVAL;
7066
7067 if (!info->attrs[NL80211_ATTR_PMKID])
7068 return -EINVAL;
7069
7070 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7071 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7072
7073 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7074 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7075 return -EOPNOTSUPP;
7076
7077 switch (info->genlhdr->cmd) {
7078 case NL80211_CMD_SET_PMKSA:
7079 rdev_ops = rdev->ops->set_pmksa;
7080 break;
7081 case NL80211_CMD_DEL_PMKSA:
7082 rdev_ops = rdev->ops->del_pmksa;
7083 break;
7084 default:
7085 WARN_ON(1);
7086 break;
7087 }
7088
7089 if (!rdev_ops)
7090 return -EOPNOTSUPP;
7091
7092 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7093 }
7094
7095 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7096 {
7097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7098 struct net_device *dev = info->user_ptr[1];
7099
7100 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7101 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7102 return -EOPNOTSUPP;
7103
7104 if (!rdev->ops->flush_pmksa)
7105 return -EOPNOTSUPP;
7106
7107 return rdev_flush_pmksa(rdev, dev);
7108 }
7109
7110 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7111 {
7112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7113 struct net_device *dev = info->user_ptr[1];
7114 u8 action_code, dialog_token;
7115 u16 status_code;
7116 u8 *peer;
7117
7118 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7119 !rdev->ops->tdls_mgmt)
7120 return -EOPNOTSUPP;
7121
7122 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7123 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7124 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7125 !info->attrs[NL80211_ATTR_IE] ||
7126 !info->attrs[NL80211_ATTR_MAC])
7127 return -EINVAL;
7128
7129 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7130 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7131 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7132 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7133
7134 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7135 dialog_token, status_code,
7136 nla_data(info->attrs[NL80211_ATTR_IE]),
7137 nla_len(info->attrs[NL80211_ATTR_IE]));
7138 }
7139
7140 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7141 {
7142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7143 struct net_device *dev = info->user_ptr[1];
7144 enum nl80211_tdls_operation operation;
7145 u8 *peer;
7146
7147 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7148 !rdev->ops->tdls_oper)
7149 return -EOPNOTSUPP;
7150
7151 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7152 !info->attrs[NL80211_ATTR_MAC])
7153 return -EINVAL;
7154
7155 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7156 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7157
7158 return rdev_tdls_oper(rdev, dev, peer, operation);
7159 }
7160
7161 static int nl80211_remain_on_channel(struct sk_buff *skb,
7162 struct genl_info *info)
7163 {
7164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7165 struct wireless_dev *wdev = info->user_ptr[1];
7166 struct cfg80211_chan_def chandef;
7167 struct sk_buff *msg;
7168 void *hdr;
7169 u64 cookie;
7170 u32 duration;
7171 int err;
7172
7173 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7174 !info->attrs[NL80211_ATTR_DURATION])
7175 return -EINVAL;
7176
7177 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7178
7179 if (!rdev->ops->remain_on_channel ||
7180 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7181 return -EOPNOTSUPP;
7182
7183 /*
7184 * We should be on that channel for at least a minimum amount of
7185 * time (10ms) but no longer than the driver supports.
7186 */
7187 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7188 duration > rdev->wiphy.max_remain_on_channel_duration)
7189 return -EINVAL;
7190
7191 err = nl80211_parse_chandef(rdev, info, &chandef);
7192 if (err)
7193 return err;
7194
7195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7196 if (!msg)
7197 return -ENOMEM;
7198
7199 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7200 NL80211_CMD_REMAIN_ON_CHANNEL);
7201 if (!hdr) {
7202 err = -ENOBUFS;
7203 goto free_msg;
7204 }
7205
7206 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7207 duration, &cookie);
7208
7209 if (err)
7210 goto free_msg;
7211
7212 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7213 goto nla_put_failure;
7214
7215 genlmsg_end(msg, hdr);
7216
7217 return genlmsg_reply(msg, info);
7218
7219 nla_put_failure:
7220 err = -ENOBUFS;
7221 free_msg:
7222 nlmsg_free(msg);
7223 return err;
7224 }
7225
7226 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7227 struct genl_info *info)
7228 {
7229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7230 struct wireless_dev *wdev = info->user_ptr[1];
7231 u64 cookie;
7232
7233 if (!info->attrs[NL80211_ATTR_COOKIE])
7234 return -EINVAL;
7235
7236 if (!rdev->ops->cancel_remain_on_channel)
7237 return -EOPNOTSUPP;
7238
7239 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7240
7241 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7242 }
7243
7244 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7245 u8 *rates, u8 rates_len)
7246 {
7247 u8 i;
7248 u32 mask = 0;
7249
7250 for (i = 0; i < rates_len; i++) {
7251 int rate = (rates[i] & 0x7f) * 5;
7252 int ridx;
7253 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7254 struct ieee80211_rate *srate =
7255 &sband->bitrates[ridx];
7256 if (rate == srate->bitrate) {
7257 mask |= 1 << ridx;
7258 break;
7259 }
7260 }
7261 if (ridx == sband->n_bitrates)
7262 return 0; /* rate not found */
7263 }
7264
7265 return mask;
7266 }
7267
7268 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7269 u8 *rates, u8 rates_len,
7270 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7271 {
7272 u8 i;
7273
7274 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7275
7276 for (i = 0; i < rates_len; i++) {
7277 int ridx, rbit;
7278
7279 ridx = rates[i] / 8;
7280 rbit = BIT(rates[i] % 8);
7281
7282 /* check validity */
7283 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7284 return false;
7285
7286 /* check availability */
7287 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7288 mcs[ridx] |= rbit;
7289 else
7290 return false;
7291 }
7292
7293 return true;
7294 }
7295
7296 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7297 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7298 .len = NL80211_MAX_SUPP_RATES },
7299 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7300 .len = NL80211_MAX_SUPP_HT_RATES },
7301 };
7302
7303 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7304 struct genl_info *info)
7305 {
7306 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7308 struct cfg80211_bitrate_mask mask;
7309 int rem, i;
7310 struct net_device *dev = info->user_ptr[1];
7311 struct nlattr *tx_rates;
7312 struct ieee80211_supported_band *sband;
7313
7314 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7315 return -EINVAL;
7316
7317 if (!rdev->ops->set_bitrate_mask)
7318 return -EOPNOTSUPP;
7319
7320 memset(&mask, 0, sizeof(mask));
7321 /* Default to all rates enabled */
7322 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7323 sband = rdev->wiphy.bands[i];
7324 mask.control[i].legacy =
7325 sband ? (1 << sband->n_bitrates) - 1 : 0;
7326 if (sband)
7327 memcpy(mask.control[i].mcs,
7328 sband->ht_cap.mcs.rx_mask,
7329 sizeof(mask.control[i].mcs));
7330 else
7331 memset(mask.control[i].mcs, 0,
7332 sizeof(mask.control[i].mcs));
7333 }
7334
7335 /*
7336 * The nested attribute uses enum nl80211_band as the index. This maps
7337 * directly to the enum ieee80211_band values used in cfg80211.
7338 */
7339 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7340 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7341 {
7342 enum ieee80211_band band = nla_type(tx_rates);
7343 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7344 return -EINVAL;
7345 sband = rdev->wiphy.bands[band];
7346 if (sband == NULL)
7347 return -EINVAL;
7348 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7349 nla_len(tx_rates), nl80211_txattr_policy);
7350 if (tb[NL80211_TXRATE_LEGACY]) {
7351 mask.control[band].legacy = rateset_to_mask(
7352 sband,
7353 nla_data(tb[NL80211_TXRATE_LEGACY]),
7354 nla_len(tb[NL80211_TXRATE_LEGACY]));
7355 if ((mask.control[band].legacy == 0) &&
7356 nla_len(tb[NL80211_TXRATE_LEGACY]))
7357 return -EINVAL;
7358 }
7359 if (tb[NL80211_TXRATE_MCS]) {
7360 if (!ht_rateset_to_mask(
7361 sband,
7362 nla_data(tb[NL80211_TXRATE_MCS]),
7363 nla_len(tb[NL80211_TXRATE_MCS]),
7364 mask.control[band].mcs))
7365 return -EINVAL;
7366 }
7367
7368 if (mask.control[band].legacy == 0) {
7369 /* don't allow empty legacy rates if HT
7370 * is not even supported. */
7371 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7372 return -EINVAL;
7373
7374 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7375 if (mask.control[band].mcs[i])
7376 break;
7377
7378 /* legacy and mcs rates may not be both empty */
7379 if (i == IEEE80211_HT_MCS_MASK_LEN)
7380 return -EINVAL;
7381 }
7382 }
7383
7384 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7385 }
7386
7387 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7388 {
7389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7390 struct wireless_dev *wdev = info->user_ptr[1];
7391 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7392
7393 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7394 return -EINVAL;
7395
7396 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7397 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7398
7399 switch (wdev->iftype) {
7400 case NL80211_IFTYPE_STATION:
7401 case NL80211_IFTYPE_ADHOC:
7402 case NL80211_IFTYPE_P2P_CLIENT:
7403 case NL80211_IFTYPE_AP:
7404 case NL80211_IFTYPE_AP_VLAN:
7405 case NL80211_IFTYPE_MESH_POINT:
7406 case NL80211_IFTYPE_P2P_GO:
7407 case NL80211_IFTYPE_P2P_DEVICE:
7408 break;
7409 default:
7410 return -EOPNOTSUPP;
7411 }
7412
7413 /* not much point in registering if we can't reply */
7414 if (!rdev->ops->mgmt_tx)
7415 return -EOPNOTSUPP;
7416
7417 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7418 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7419 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7420 }
7421
7422 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7423 {
7424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7425 struct wireless_dev *wdev = info->user_ptr[1];
7426 struct cfg80211_chan_def chandef;
7427 int err;
7428 void *hdr = NULL;
7429 u64 cookie;
7430 struct sk_buff *msg = NULL;
7431 struct cfg80211_mgmt_tx_params params = {
7432 .dont_wait_for_ack =
7433 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7434 };
7435
7436 if (!info->attrs[NL80211_ATTR_FRAME])
7437 return -EINVAL;
7438
7439 if (!rdev->ops->mgmt_tx)
7440 return -EOPNOTSUPP;
7441
7442 switch (wdev->iftype) {
7443 case NL80211_IFTYPE_P2P_DEVICE:
7444 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7445 return -EINVAL;
7446 case NL80211_IFTYPE_STATION:
7447 case NL80211_IFTYPE_ADHOC:
7448 case NL80211_IFTYPE_P2P_CLIENT:
7449 case NL80211_IFTYPE_AP:
7450 case NL80211_IFTYPE_AP_VLAN:
7451 case NL80211_IFTYPE_MESH_POINT:
7452 case NL80211_IFTYPE_P2P_GO:
7453 break;
7454 default:
7455 return -EOPNOTSUPP;
7456 }
7457
7458 if (info->attrs[NL80211_ATTR_DURATION]) {
7459 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7460 return -EINVAL;
7461 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7462
7463 /*
7464 * We should wait on the channel for at least a minimum amount
7465 * of time (10ms) but no longer than the driver supports.
7466 */
7467 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7468 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7469 return -EINVAL;
7470
7471 }
7472
7473 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7474
7475 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7476 return -EINVAL;
7477
7478 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7479
7480 /* get the channel if any has been specified, otherwise pass NULL to
7481 * the driver. The latter will use the current one
7482 */
7483 chandef.chan = NULL;
7484 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7485 err = nl80211_parse_chandef(rdev, info, &chandef);
7486 if (err)
7487 return err;
7488 }
7489
7490 if (!chandef.chan && params.offchan)
7491 return -EINVAL;
7492
7493 if (!params.dont_wait_for_ack) {
7494 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7495 if (!msg)
7496 return -ENOMEM;
7497
7498 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7499 NL80211_CMD_FRAME);
7500 if (!hdr) {
7501 err = -ENOBUFS;
7502 goto free_msg;
7503 }
7504 }
7505
7506 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7507 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7508 params.chan = chandef.chan;
7509 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7510 if (err)
7511 goto free_msg;
7512
7513 if (msg) {
7514 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7515 goto nla_put_failure;
7516
7517 genlmsg_end(msg, hdr);
7518 return genlmsg_reply(msg, info);
7519 }
7520
7521 return 0;
7522
7523 nla_put_failure:
7524 err = -ENOBUFS;
7525 free_msg:
7526 nlmsg_free(msg);
7527 return err;
7528 }
7529
7530 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7531 {
7532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7533 struct wireless_dev *wdev = info->user_ptr[1];
7534 u64 cookie;
7535
7536 if (!info->attrs[NL80211_ATTR_COOKIE])
7537 return -EINVAL;
7538
7539 if (!rdev->ops->mgmt_tx_cancel_wait)
7540 return -EOPNOTSUPP;
7541
7542 switch (wdev->iftype) {
7543 case NL80211_IFTYPE_STATION:
7544 case NL80211_IFTYPE_ADHOC:
7545 case NL80211_IFTYPE_P2P_CLIENT:
7546 case NL80211_IFTYPE_AP:
7547 case NL80211_IFTYPE_AP_VLAN:
7548 case NL80211_IFTYPE_P2P_GO:
7549 case NL80211_IFTYPE_P2P_DEVICE:
7550 break;
7551 default:
7552 return -EOPNOTSUPP;
7553 }
7554
7555 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7556
7557 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7558 }
7559
7560 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7561 {
7562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7563 struct wireless_dev *wdev;
7564 struct net_device *dev = info->user_ptr[1];
7565 u8 ps_state;
7566 bool state;
7567 int err;
7568
7569 if (!info->attrs[NL80211_ATTR_PS_STATE])
7570 return -EINVAL;
7571
7572 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7573
7574 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7575 return -EINVAL;
7576
7577 wdev = dev->ieee80211_ptr;
7578
7579 if (!rdev->ops->set_power_mgmt)
7580 return -EOPNOTSUPP;
7581
7582 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7583
7584 if (state == wdev->ps)
7585 return 0;
7586
7587 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7588 if (!err)
7589 wdev->ps = state;
7590 return err;
7591 }
7592
7593 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7594 {
7595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7596 enum nl80211_ps_state ps_state;
7597 struct wireless_dev *wdev;
7598 struct net_device *dev = info->user_ptr[1];
7599 struct sk_buff *msg;
7600 void *hdr;
7601 int err;
7602
7603 wdev = dev->ieee80211_ptr;
7604
7605 if (!rdev->ops->set_power_mgmt)
7606 return -EOPNOTSUPP;
7607
7608 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7609 if (!msg)
7610 return -ENOMEM;
7611
7612 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7613 NL80211_CMD_GET_POWER_SAVE);
7614 if (!hdr) {
7615 err = -ENOBUFS;
7616 goto free_msg;
7617 }
7618
7619 if (wdev->ps)
7620 ps_state = NL80211_PS_ENABLED;
7621 else
7622 ps_state = NL80211_PS_DISABLED;
7623
7624 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7625 goto nla_put_failure;
7626
7627 genlmsg_end(msg, hdr);
7628 return genlmsg_reply(msg, info);
7629
7630 nla_put_failure:
7631 err = -ENOBUFS;
7632 free_msg:
7633 nlmsg_free(msg);
7634 return err;
7635 }
7636
7637 static struct nla_policy
7638 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7639 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7640 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7641 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7642 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7643 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7644 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7645 };
7646
7647 static int nl80211_set_cqm_txe(struct genl_info *info,
7648 u32 rate, u32 pkts, u32 intvl)
7649 {
7650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7651 struct net_device *dev = info->user_ptr[1];
7652 struct wireless_dev *wdev = dev->ieee80211_ptr;
7653
7654 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7655 return -EINVAL;
7656
7657 if (!rdev->ops->set_cqm_txe_config)
7658 return -EOPNOTSUPP;
7659
7660 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7661 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7662 return -EOPNOTSUPP;
7663
7664 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7665 }
7666
7667 static int nl80211_set_cqm_rssi(struct genl_info *info,
7668 s32 threshold, u32 hysteresis)
7669 {
7670 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7671 struct net_device *dev = info->user_ptr[1];
7672 struct wireless_dev *wdev = dev->ieee80211_ptr;
7673
7674 if (threshold > 0)
7675 return -EINVAL;
7676
7677 /* disabling - hysteresis should also be zero then */
7678 if (threshold == 0)
7679 hysteresis = 0;
7680
7681 if (!rdev->ops->set_cqm_rssi_config)
7682 return -EOPNOTSUPP;
7683
7684 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7685 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7686 return -EOPNOTSUPP;
7687
7688 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7689 }
7690
7691 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7692 {
7693 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7694 struct nlattr *cqm;
7695 int err;
7696
7697 cqm = info->attrs[NL80211_ATTR_CQM];
7698 if (!cqm)
7699 return -EINVAL;
7700
7701 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7702 nl80211_attr_cqm_policy);
7703 if (err)
7704 return err;
7705
7706 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7707 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7708 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7709 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7710
7711 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7712 }
7713
7714 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7715 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7716 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7717 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7718 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7719 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7720
7721 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7722 }
7723
7724 return -EINVAL;
7725 }
7726
7727 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7728 {
7729 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7730 struct net_device *dev = info->user_ptr[1];
7731 struct mesh_config cfg;
7732 struct mesh_setup setup;
7733 int err;
7734
7735 /* start with default */
7736 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7737 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7738
7739 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7740 /* and parse parameters if given */
7741 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7742 if (err)
7743 return err;
7744 }
7745
7746 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7747 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7748 return -EINVAL;
7749
7750 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7751 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7752
7753 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7754 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7755 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7756 return -EINVAL;
7757
7758 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7759 setup.beacon_interval =
7760 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7761 if (setup.beacon_interval < 10 ||
7762 setup.beacon_interval > 10000)
7763 return -EINVAL;
7764 }
7765
7766 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7767 setup.dtim_period =
7768 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7769 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7770 return -EINVAL;
7771 }
7772
7773 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7774 /* parse additional setup parameters if given */
7775 err = nl80211_parse_mesh_setup(info, &setup);
7776 if (err)
7777 return err;
7778 }
7779
7780 if (setup.user_mpm)
7781 cfg.auto_open_plinks = false;
7782
7783 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7784 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7785 if (err)
7786 return err;
7787 } else {
7788 /* cfg80211_join_mesh() will sort it out */
7789 setup.chandef.chan = NULL;
7790 }
7791
7792 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7793 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7794 int n_rates =
7795 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7796 struct ieee80211_supported_band *sband;
7797
7798 if (!setup.chandef.chan)
7799 return -EINVAL;
7800
7801 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7802
7803 err = ieee80211_get_ratemask(sband, rates, n_rates,
7804 &setup.basic_rates);
7805 if (err)
7806 return err;
7807 }
7808
7809 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7810 }
7811
7812 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7813 {
7814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7815 struct net_device *dev = info->user_ptr[1];
7816
7817 return cfg80211_leave_mesh(rdev, dev);
7818 }
7819
7820 #ifdef CONFIG_PM
7821 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7822 struct cfg80211_registered_device *rdev)
7823 {
7824 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7825 struct nlattr *nl_pats, *nl_pat;
7826 int i, pat_len;
7827
7828 if (!wowlan->n_patterns)
7829 return 0;
7830
7831 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7832 if (!nl_pats)
7833 return -ENOBUFS;
7834
7835 for (i = 0; i < wowlan->n_patterns; i++) {
7836 nl_pat = nla_nest_start(msg, i + 1);
7837 if (!nl_pat)
7838 return -ENOBUFS;
7839 pat_len = wowlan->patterns[i].pattern_len;
7840 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7841 wowlan->patterns[i].mask) ||
7842 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7843 wowlan->patterns[i].pattern) ||
7844 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7845 wowlan->patterns[i].pkt_offset))
7846 return -ENOBUFS;
7847 nla_nest_end(msg, nl_pat);
7848 }
7849 nla_nest_end(msg, nl_pats);
7850
7851 return 0;
7852 }
7853
7854 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7855 struct cfg80211_wowlan_tcp *tcp)
7856 {
7857 struct nlattr *nl_tcp;
7858
7859 if (!tcp)
7860 return 0;
7861
7862 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7863 if (!nl_tcp)
7864 return -ENOBUFS;
7865
7866 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7867 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7868 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7869 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7870 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7871 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7872 tcp->payload_len, tcp->payload) ||
7873 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7874 tcp->data_interval) ||
7875 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7876 tcp->wake_len, tcp->wake_data) ||
7877 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7878 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7879 return -ENOBUFS;
7880
7881 if (tcp->payload_seq.len &&
7882 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7883 sizeof(tcp->payload_seq), &tcp->payload_seq))
7884 return -ENOBUFS;
7885
7886 if (tcp->payload_tok.len &&
7887 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7888 sizeof(tcp->payload_tok) + tcp->tokens_size,
7889 &tcp->payload_tok))
7890 return -ENOBUFS;
7891
7892 nla_nest_end(msg, nl_tcp);
7893
7894 return 0;
7895 }
7896
7897 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7898 {
7899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7900 struct sk_buff *msg;
7901 void *hdr;
7902 u32 size = NLMSG_DEFAULT_SIZE;
7903
7904 if (!rdev->wiphy.wowlan)
7905 return -EOPNOTSUPP;
7906
7907 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7908 /* adjust size to have room for all the data */
7909 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7910 rdev->wiphy.wowlan_config->tcp->payload_len +
7911 rdev->wiphy.wowlan_config->tcp->wake_len +
7912 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7913 }
7914
7915 msg = nlmsg_new(size, GFP_KERNEL);
7916 if (!msg)
7917 return -ENOMEM;
7918
7919 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7920 NL80211_CMD_GET_WOWLAN);
7921 if (!hdr)
7922 goto nla_put_failure;
7923
7924 if (rdev->wiphy.wowlan_config) {
7925 struct nlattr *nl_wowlan;
7926
7927 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7928 if (!nl_wowlan)
7929 goto nla_put_failure;
7930
7931 if ((rdev->wiphy.wowlan_config->any &&
7932 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7933 (rdev->wiphy.wowlan_config->disconnect &&
7934 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7935 (rdev->wiphy.wowlan_config->magic_pkt &&
7936 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7937 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7938 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7939 (rdev->wiphy.wowlan_config->eap_identity_req &&
7940 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7941 (rdev->wiphy.wowlan_config->four_way_handshake &&
7942 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7943 (rdev->wiphy.wowlan_config->rfkill_release &&
7944 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7945 goto nla_put_failure;
7946
7947 if (nl80211_send_wowlan_patterns(msg, rdev))
7948 goto nla_put_failure;
7949
7950 if (nl80211_send_wowlan_tcp(msg,
7951 rdev->wiphy.wowlan_config->tcp))
7952 goto nla_put_failure;
7953
7954 nla_nest_end(msg, nl_wowlan);
7955 }
7956
7957 genlmsg_end(msg, hdr);
7958 return genlmsg_reply(msg, info);
7959
7960 nla_put_failure:
7961 nlmsg_free(msg);
7962 return -ENOBUFS;
7963 }
7964
7965 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7966 struct nlattr *attr,
7967 struct cfg80211_wowlan *trig)
7968 {
7969 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7970 struct cfg80211_wowlan_tcp *cfg;
7971 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7972 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7973 u32 size;
7974 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7975 int err, port;
7976
7977 if (!rdev->wiphy.wowlan->tcp)
7978 return -EINVAL;
7979
7980 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7981 nla_data(attr), nla_len(attr),
7982 nl80211_wowlan_tcp_policy);
7983 if (err)
7984 return err;
7985
7986 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7987 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7988 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7989 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7990 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7991 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7992 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7993 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7994 return -EINVAL;
7995
7996 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7997 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7998 return -EINVAL;
7999
8000 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8001 rdev->wiphy.wowlan->tcp->data_interval_max ||
8002 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8003 return -EINVAL;
8004
8005 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8006 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8007 return -EINVAL;
8008
8009 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8010 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8011 return -EINVAL;
8012
8013 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8014 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8015
8016 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8017 tokens_size = tokln - sizeof(*tok);
8018
8019 if (!tok->len || tokens_size % tok->len)
8020 return -EINVAL;
8021 if (!rdev->wiphy.wowlan->tcp->tok)
8022 return -EINVAL;
8023 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8024 return -EINVAL;
8025 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8026 return -EINVAL;
8027 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8028 return -EINVAL;
8029 if (tok->offset + tok->len > data_size)
8030 return -EINVAL;
8031 }
8032
8033 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8034 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8035 if (!rdev->wiphy.wowlan->tcp->seq)
8036 return -EINVAL;
8037 if (seq->len == 0 || seq->len > 4)
8038 return -EINVAL;
8039 if (seq->len + seq->offset > data_size)
8040 return -EINVAL;
8041 }
8042
8043 size = sizeof(*cfg);
8044 size += data_size;
8045 size += wake_size + wake_mask_size;
8046 size += tokens_size;
8047
8048 cfg = kzalloc(size, GFP_KERNEL);
8049 if (!cfg)
8050 return -ENOMEM;
8051 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8052 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8053 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8054 ETH_ALEN);
8055 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8056 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8057 else
8058 port = 0;
8059 #ifdef CONFIG_INET
8060 /* allocate a socket and port for it and use it */
8061 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8062 IPPROTO_TCP, &cfg->sock, 1);
8063 if (err) {
8064 kfree(cfg);
8065 return err;
8066 }
8067 if (inet_csk_get_port(cfg->sock->sk, port)) {
8068 sock_release(cfg->sock);
8069 kfree(cfg);
8070 return -EADDRINUSE;
8071 }
8072 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8073 #else
8074 if (!port) {
8075 kfree(cfg);
8076 return -EINVAL;
8077 }
8078 cfg->src_port = port;
8079 #endif
8080
8081 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8082 cfg->payload_len = data_size;
8083 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8084 memcpy((void *)cfg->payload,
8085 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8086 data_size);
8087 if (seq)
8088 cfg->payload_seq = *seq;
8089 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8090 cfg->wake_len = wake_size;
8091 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8092 memcpy((void *)cfg->wake_data,
8093 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8094 wake_size);
8095 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8096 data_size + wake_size;
8097 memcpy((void *)cfg->wake_mask,
8098 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8099 wake_mask_size);
8100 if (tok) {
8101 cfg->tokens_size = tokens_size;
8102 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8103 }
8104
8105 trig->tcp = cfg;
8106
8107 return 0;
8108 }
8109
8110 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8111 {
8112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8113 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8114 struct cfg80211_wowlan new_triggers = {};
8115 struct cfg80211_wowlan *ntrig;
8116 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8117 int err, i;
8118 bool prev_enabled = rdev->wiphy.wowlan_config;
8119
8120 if (!wowlan)
8121 return -EOPNOTSUPP;
8122
8123 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8124 cfg80211_rdev_free_wowlan(rdev);
8125 rdev->wiphy.wowlan_config = NULL;
8126 goto set_wakeup;
8127 }
8128
8129 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8130 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8131 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8132 nl80211_wowlan_policy);
8133 if (err)
8134 return err;
8135
8136 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8137 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8138 return -EINVAL;
8139 new_triggers.any = true;
8140 }
8141
8142 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8143 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8144 return -EINVAL;
8145 new_triggers.disconnect = true;
8146 }
8147
8148 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8149 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8150 return -EINVAL;
8151 new_triggers.magic_pkt = true;
8152 }
8153
8154 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8155 return -EINVAL;
8156
8157 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8158 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8159 return -EINVAL;
8160 new_triggers.gtk_rekey_failure = true;
8161 }
8162
8163 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8164 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8165 return -EINVAL;
8166 new_triggers.eap_identity_req = true;
8167 }
8168
8169 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8170 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8171 return -EINVAL;
8172 new_triggers.four_way_handshake = true;
8173 }
8174
8175 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8176 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8177 return -EINVAL;
8178 new_triggers.rfkill_release = true;
8179 }
8180
8181 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8182 struct nlattr *pat;
8183 int n_patterns = 0;
8184 int rem, pat_len, mask_len, pkt_offset;
8185 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8186
8187 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8188 rem)
8189 n_patterns++;
8190 if (n_patterns > wowlan->n_patterns)
8191 return -EINVAL;
8192
8193 new_triggers.patterns = kcalloc(n_patterns,
8194 sizeof(new_triggers.patterns[0]),
8195 GFP_KERNEL);
8196 if (!new_triggers.patterns)
8197 return -ENOMEM;
8198
8199 new_triggers.n_patterns = n_patterns;
8200 i = 0;
8201
8202 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8203 rem) {
8204 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8205 nla_len(pat), NULL);
8206 err = -EINVAL;
8207 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8208 !pat_tb[NL80211_PKTPAT_PATTERN])
8209 goto error;
8210 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8211 mask_len = DIV_ROUND_UP(pat_len, 8);
8212 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8213 goto error;
8214 if (pat_len > wowlan->pattern_max_len ||
8215 pat_len < wowlan->pattern_min_len)
8216 goto error;
8217
8218 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8219 pkt_offset = 0;
8220 else
8221 pkt_offset = nla_get_u32(
8222 pat_tb[NL80211_PKTPAT_OFFSET]);
8223 if (pkt_offset > wowlan->max_pkt_offset)
8224 goto error;
8225 new_triggers.patterns[i].pkt_offset = pkt_offset;
8226
8227 new_triggers.patterns[i].mask =
8228 kmalloc(mask_len + pat_len, GFP_KERNEL);
8229 if (!new_triggers.patterns[i].mask) {
8230 err = -ENOMEM;
8231 goto error;
8232 }
8233 new_triggers.patterns[i].pattern =
8234 new_triggers.patterns[i].mask + mask_len;
8235 memcpy(new_triggers.patterns[i].mask,
8236 nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8237 mask_len);
8238 new_triggers.patterns[i].pattern_len = pat_len;
8239 memcpy(new_triggers.patterns[i].pattern,
8240 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8241 pat_len);
8242 i++;
8243 }
8244 }
8245
8246 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8247 err = nl80211_parse_wowlan_tcp(
8248 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8249 &new_triggers);
8250 if (err)
8251 goto error;
8252 }
8253
8254 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8255 if (!ntrig) {
8256 err = -ENOMEM;
8257 goto error;
8258 }
8259 cfg80211_rdev_free_wowlan(rdev);
8260 rdev->wiphy.wowlan_config = ntrig;
8261
8262 set_wakeup:
8263 if (rdev->ops->set_wakeup &&
8264 prev_enabled != !!rdev->wiphy.wowlan_config)
8265 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8266
8267 return 0;
8268 error:
8269 for (i = 0; i < new_triggers.n_patterns; i++)
8270 kfree(new_triggers.patterns[i].mask);
8271 kfree(new_triggers.patterns);
8272 if (new_triggers.tcp && new_triggers.tcp->sock)
8273 sock_release(new_triggers.tcp->sock);
8274 kfree(new_triggers.tcp);
8275 return err;
8276 }
8277 #endif
8278
8279 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8280 struct cfg80211_registered_device *rdev)
8281 {
8282 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8283 int i, j, pat_len;
8284 struct cfg80211_coalesce_rules *rule;
8285
8286 if (!rdev->coalesce->n_rules)
8287 return 0;
8288
8289 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8290 if (!nl_rules)
8291 return -ENOBUFS;
8292
8293 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8294 nl_rule = nla_nest_start(msg, i + 1);
8295 if (!nl_rule)
8296 return -ENOBUFS;
8297
8298 rule = &rdev->coalesce->rules[i];
8299 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8300 rule->delay))
8301 return -ENOBUFS;
8302
8303 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8304 rule->condition))
8305 return -ENOBUFS;
8306
8307 nl_pats = nla_nest_start(msg,
8308 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8309 if (!nl_pats)
8310 return -ENOBUFS;
8311
8312 for (j = 0; j < rule->n_patterns; j++) {
8313 nl_pat = nla_nest_start(msg, j + 1);
8314 if (!nl_pat)
8315 return -ENOBUFS;
8316 pat_len = rule->patterns[j].pattern_len;
8317 if (nla_put(msg, NL80211_PKTPAT_MASK,
8318 DIV_ROUND_UP(pat_len, 8),
8319 rule->patterns[j].mask) ||
8320 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8321 rule->patterns[j].pattern) ||
8322 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8323 rule->patterns[j].pkt_offset))
8324 return -ENOBUFS;
8325 nla_nest_end(msg, nl_pat);
8326 }
8327 nla_nest_end(msg, nl_pats);
8328 nla_nest_end(msg, nl_rule);
8329 }
8330 nla_nest_end(msg, nl_rules);
8331
8332 return 0;
8333 }
8334
8335 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8336 {
8337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8338 struct sk_buff *msg;
8339 void *hdr;
8340
8341 if (!rdev->wiphy.coalesce)
8342 return -EOPNOTSUPP;
8343
8344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8345 if (!msg)
8346 return -ENOMEM;
8347
8348 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8349 NL80211_CMD_GET_COALESCE);
8350 if (!hdr)
8351 goto nla_put_failure;
8352
8353 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8354 goto nla_put_failure;
8355
8356 genlmsg_end(msg, hdr);
8357 return genlmsg_reply(msg, info);
8358
8359 nla_put_failure:
8360 nlmsg_free(msg);
8361 return -ENOBUFS;
8362 }
8363
8364 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8365 {
8366 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8367 int i, j;
8368 struct cfg80211_coalesce_rules *rule;
8369
8370 if (!coalesce)
8371 return;
8372
8373 for (i = 0; i < coalesce->n_rules; i++) {
8374 rule = &coalesce->rules[i];
8375 for (j = 0; j < rule->n_patterns; j++)
8376 kfree(rule->patterns[j].mask);
8377 kfree(rule->patterns);
8378 }
8379 kfree(coalesce->rules);
8380 kfree(coalesce);
8381 rdev->coalesce = NULL;
8382 }
8383
8384 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8385 struct nlattr *rule,
8386 struct cfg80211_coalesce_rules *new_rule)
8387 {
8388 int err, i;
8389 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8390 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8391 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8392 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8393
8394 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8395 nla_len(rule), nl80211_coalesce_policy);
8396 if (err)
8397 return err;
8398
8399 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8400 new_rule->delay =
8401 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8402 if (new_rule->delay > coalesce->max_delay)
8403 return -EINVAL;
8404
8405 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8406 new_rule->condition =
8407 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8408 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8409 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8410 return -EINVAL;
8411
8412 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8413 return -EINVAL;
8414
8415 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8416 rem)
8417 n_patterns++;
8418 if (n_patterns > coalesce->n_patterns)
8419 return -EINVAL;
8420
8421 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8422 GFP_KERNEL);
8423 if (!new_rule->patterns)
8424 return -ENOMEM;
8425
8426 new_rule->n_patterns = n_patterns;
8427 i = 0;
8428
8429 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8430 rem) {
8431 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8432 nla_len(pat), NULL);
8433 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8434 !pat_tb[NL80211_PKTPAT_PATTERN])
8435 return -EINVAL;
8436 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8437 mask_len = DIV_ROUND_UP(pat_len, 8);
8438 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8439 return -EINVAL;
8440 if (pat_len > coalesce->pattern_max_len ||
8441 pat_len < coalesce->pattern_min_len)
8442 return -EINVAL;
8443
8444 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8445 pkt_offset = 0;
8446 else
8447 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8448 if (pkt_offset > coalesce->max_pkt_offset)
8449 return -EINVAL;
8450 new_rule->patterns[i].pkt_offset = pkt_offset;
8451
8452 new_rule->patterns[i].mask =
8453 kmalloc(mask_len + pat_len, GFP_KERNEL);
8454 if (!new_rule->patterns[i].mask)
8455 return -ENOMEM;
8456 new_rule->patterns[i].pattern =
8457 new_rule->patterns[i].mask + mask_len;
8458 memcpy(new_rule->patterns[i].mask,
8459 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8460 new_rule->patterns[i].pattern_len = pat_len;
8461 memcpy(new_rule->patterns[i].pattern,
8462 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8463 i++;
8464 }
8465
8466 return 0;
8467 }
8468
8469 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8470 {
8471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8473 struct cfg80211_coalesce new_coalesce = {};
8474 struct cfg80211_coalesce *n_coalesce;
8475 int err, rem_rule, n_rules = 0, i, j;
8476 struct nlattr *rule;
8477 struct cfg80211_coalesce_rules *tmp_rule;
8478
8479 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8480 return -EOPNOTSUPP;
8481
8482 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8483 cfg80211_rdev_free_coalesce(rdev);
8484 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8485 return 0;
8486 }
8487
8488 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8489 rem_rule)
8490 n_rules++;
8491 if (n_rules > coalesce->n_rules)
8492 return -EINVAL;
8493
8494 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8495 GFP_KERNEL);
8496 if (!new_coalesce.rules)
8497 return -ENOMEM;
8498
8499 new_coalesce.n_rules = n_rules;
8500 i = 0;
8501
8502 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8503 rem_rule) {
8504 err = nl80211_parse_coalesce_rule(rdev, rule,
8505 &new_coalesce.rules[i]);
8506 if (err)
8507 goto error;
8508
8509 i++;
8510 }
8511
8512 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8513 if (err)
8514 goto error;
8515
8516 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8517 if (!n_coalesce) {
8518 err = -ENOMEM;
8519 goto error;
8520 }
8521 cfg80211_rdev_free_coalesce(rdev);
8522 rdev->coalesce = n_coalesce;
8523
8524 return 0;
8525 error:
8526 for (i = 0; i < new_coalesce.n_rules; i++) {
8527 tmp_rule = &new_coalesce.rules[i];
8528 for (j = 0; j < tmp_rule->n_patterns; j++)
8529 kfree(tmp_rule->patterns[j].mask);
8530 kfree(tmp_rule->patterns);
8531 }
8532 kfree(new_coalesce.rules);
8533
8534 return err;
8535 }
8536
8537 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8538 {
8539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540 struct net_device *dev = info->user_ptr[1];
8541 struct wireless_dev *wdev = dev->ieee80211_ptr;
8542 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8543 struct cfg80211_gtk_rekey_data rekey_data;
8544 int err;
8545
8546 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8547 return -EINVAL;
8548
8549 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8550 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8551 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8552 nl80211_rekey_policy);
8553 if (err)
8554 return err;
8555
8556 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8557 return -ERANGE;
8558 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8559 return -ERANGE;
8560 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8561 return -ERANGE;
8562
8563 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8564 NL80211_KEK_LEN);
8565 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8566 NL80211_KCK_LEN);
8567 memcpy(rekey_data.replay_ctr,
8568 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8569 NL80211_REPLAY_CTR_LEN);
8570
8571 wdev_lock(wdev);
8572 if (!wdev->current_bss) {
8573 err = -ENOTCONN;
8574 goto out;
8575 }
8576
8577 if (!rdev->ops->set_rekey_data) {
8578 err = -EOPNOTSUPP;
8579 goto out;
8580 }
8581
8582 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8583 out:
8584 wdev_unlock(wdev);
8585 return err;
8586 }
8587
8588 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8589 struct genl_info *info)
8590 {
8591 struct net_device *dev = info->user_ptr[1];
8592 struct wireless_dev *wdev = dev->ieee80211_ptr;
8593
8594 if (wdev->iftype != NL80211_IFTYPE_AP &&
8595 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8596 return -EINVAL;
8597
8598 if (wdev->ap_unexpected_nlportid)
8599 return -EBUSY;
8600
8601 wdev->ap_unexpected_nlportid = info->snd_portid;
8602 return 0;
8603 }
8604
8605 static int nl80211_probe_client(struct sk_buff *skb,
8606 struct genl_info *info)
8607 {
8608 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8609 struct net_device *dev = info->user_ptr[1];
8610 struct wireless_dev *wdev = dev->ieee80211_ptr;
8611 struct sk_buff *msg;
8612 void *hdr;
8613 const u8 *addr;
8614 u64 cookie;
8615 int err;
8616
8617 if (wdev->iftype != NL80211_IFTYPE_AP &&
8618 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8619 return -EOPNOTSUPP;
8620
8621 if (!info->attrs[NL80211_ATTR_MAC])
8622 return -EINVAL;
8623
8624 if (!rdev->ops->probe_client)
8625 return -EOPNOTSUPP;
8626
8627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8628 if (!msg)
8629 return -ENOMEM;
8630
8631 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8632 NL80211_CMD_PROBE_CLIENT);
8633 if (!hdr) {
8634 err = -ENOBUFS;
8635 goto free_msg;
8636 }
8637
8638 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8639
8640 err = rdev_probe_client(rdev, dev, addr, &cookie);
8641 if (err)
8642 goto free_msg;
8643
8644 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8645 goto nla_put_failure;
8646
8647 genlmsg_end(msg, hdr);
8648
8649 return genlmsg_reply(msg, info);
8650
8651 nla_put_failure:
8652 err = -ENOBUFS;
8653 free_msg:
8654 nlmsg_free(msg);
8655 return err;
8656 }
8657
8658 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8659 {
8660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661 struct cfg80211_beacon_registration *reg, *nreg;
8662 int rv;
8663
8664 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8665 return -EOPNOTSUPP;
8666
8667 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8668 if (!nreg)
8669 return -ENOMEM;
8670
8671 /* First, check if already registered. */
8672 spin_lock_bh(&rdev->beacon_registrations_lock);
8673 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8674 if (reg->nlportid == info->snd_portid) {
8675 rv = -EALREADY;
8676 goto out_err;
8677 }
8678 }
8679 /* Add it to the list */
8680 nreg->nlportid = info->snd_portid;
8681 list_add(&nreg->list, &rdev->beacon_registrations);
8682
8683 spin_unlock_bh(&rdev->beacon_registrations_lock);
8684
8685 return 0;
8686 out_err:
8687 spin_unlock_bh(&rdev->beacon_registrations_lock);
8688 kfree(nreg);
8689 return rv;
8690 }
8691
8692 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8693 {
8694 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8695 struct wireless_dev *wdev = info->user_ptr[1];
8696 int err;
8697
8698 if (!rdev->ops->start_p2p_device)
8699 return -EOPNOTSUPP;
8700
8701 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8702 return -EOPNOTSUPP;
8703
8704 if (wdev->p2p_started)
8705 return 0;
8706
8707 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8708 if (err)
8709 return err;
8710
8711 err = rdev_start_p2p_device(rdev, wdev);
8712 if (err)
8713 return err;
8714
8715 wdev->p2p_started = true;
8716 rdev->opencount++;
8717
8718 return 0;
8719 }
8720
8721 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8722 {
8723 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8724 struct wireless_dev *wdev = info->user_ptr[1];
8725
8726 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8727 return -EOPNOTSUPP;
8728
8729 if (!rdev->ops->stop_p2p_device)
8730 return -EOPNOTSUPP;
8731
8732 cfg80211_stop_p2p_device(rdev, wdev);
8733
8734 return 0;
8735 }
8736
8737 static int nl80211_get_protocol_features(struct sk_buff *skb,
8738 struct genl_info *info)
8739 {
8740 void *hdr;
8741 struct sk_buff *msg;
8742
8743 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8744 if (!msg)
8745 return -ENOMEM;
8746
8747 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8748 NL80211_CMD_GET_PROTOCOL_FEATURES);
8749 if (!hdr)
8750 goto nla_put_failure;
8751
8752 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8753 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8754 goto nla_put_failure;
8755
8756 genlmsg_end(msg, hdr);
8757 return genlmsg_reply(msg, info);
8758
8759 nla_put_failure:
8760 kfree_skb(msg);
8761 return -ENOBUFS;
8762 }
8763
8764 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8765 {
8766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8767 struct cfg80211_update_ft_ies_params ft_params;
8768 struct net_device *dev = info->user_ptr[1];
8769
8770 if (!rdev->ops->update_ft_ies)
8771 return -EOPNOTSUPP;
8772
8773 if (!info->attrs[NL80211_ATTR_MDID] ||
8774 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8775 return -EINVAL;
8776
8777 memset(&ft_params, 0, sizeof(ft_params));
8778 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8779 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8780 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8781
8782 return rdev_update_ft_ies(rdev, dev, &ft_params);
8783 }
8784
8785 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8786 struct genl_info *info)
8787 {
8788 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789 struct wireless_dev *wdev = info->user_ptr[1];
8790 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8791 u16 duration;
8792 int ret;
8793
8794 if (!rdev->ops->crit_proto_start)
8795 return -EOPNOTSUPP;
8796
8797 if (WARN_ON(!rdev->ops->crit_proto_stop))
8798 return -EINVAL;
8799
8800 if (rdev->crit_proto_nlportid)
8801 return -EBUSY;
8802
8803 /* determine protocol if provided */
8804 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8805 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8806
8807 if (proto >= NUM_NL80211_CRIT_PROTO)
8808 return -EINVAL;
8809
8810 /* timeout must be provided */
8811 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8812 return -EINVAL;
8813
8814 duration =
8815 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8816
8817 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8818 return -ERANGE;
8819
8820 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8821 if (!ret)
8822 rdev->crit_proto_nlportid = info->snd_portid;
8823
8824 return ret;
8825 }
8826
8827 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8828 struct genl_info *info)
8829 {
8830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8831 struct wireless_dev *wdev = info->user_ptr[1];
8832
8833 if (!rdev->ops->crit_proto_stop)
8834 return -EOPNOTSUPP;
8835
8836 if (rdev->crit_proto_nlportid) {
8837 rdev->crit_proto_nlportid = 0;
8838 rdev_crit_proto_stop(rdev, wdev);
8839 }
8840 return 0;
8841 }
8842
8843 #define NL80211_FLAG_NEED_WIPHY 0x01
8844 #define NL80211_FLAG_NEED_NETDEV 0x02
8845 #define NL80211_FLAG_NEED_RTNL 0x04
8846 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8847 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8848 NL80211_FLAG_CHECK_NETDEV_UP)
8849 #define NL80211_FLAG_NEED_WDEV 0x10
8850 /* If a netdev is associated, it must be UP, P2P must be started */
8851 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8852 NL80211_FLAG_CHECK_NETDEV_UP)
8853
8854 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8855 struct genl_info *info)
8856 {
8857 struct cfg80211_registered_device *rdev;
8858 struct wireless_dev *wdev;
8859 struct net_device *dev;
8860 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8861
8862 if (rtnl)
8863 rtnl_lock();
8864
8865 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8866 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8867 if (IS_ERR(rdev)) {
8868 if (rtnl)
8869 rtnl_unlock();
8870 return PTR_ERR(rdev);
8871 }
8872 info->user_ptr[0] = rdev;
8873 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8874 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8875 ASSERT_RTNL();
8876
8877 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8878 info->attrs);
8879 if (IS_ERR(wdev)) {
8880 if (rtnl)
8881 rtnl_unlock();
8882 return PTR_ERR(wdev);
8883 }
8884
8885 dev = wdev->netdev;
8886 rdev = wiphy_to_dev(wdev->wiphy);
8887
8888 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8889 if (!dev) {
8890 if (rtnl)
8891 rtnl_unlock();
8892 return -EINVAL;
8893 }
8894
8895 info->user_ptr[1] = dev;
8896 } else {
8897 info->user_ptr[1] = wdev;
8898 }
8899
8900 if (dev) {
8901 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8902 !netif_running(dev)) {
8903 if (rtnl)
8904 rtnl_unlock();
8905 return -ENETDOWN;
8906 }
8907
8908 dev_hold(dev);
8909 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8910 if (!wdev->p2p_started) {
8911 if (rtnl)
8912 rtnl_unlock();
8913 return -ENETDOWN;
8914 }
8915 }
8916
8917 info->user_ptr[0] = rdev;
8918 }
8919
8920 return 0;
8921 }
8922
8923 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8924 struct genl_info *info)
8925 {
8926 if (info->user_ptr[1]) {
8927 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8928 struct wireless_dev *wdev = info->user_ptr[1];
8929
8930 if (wdev->netdev)
8931 dev_put(wdev->netdev);
8932 } else {
8933 dev_put(info->user_ptr[1]);
8934 }
8935 }
8936 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8937 rtnl_unlock();
8938 }
8939
8940 static struct genl_ops nl80211_ops[] = {
8941 {
8942 .cmd = NL80211_CMD_GET_WIPHY,
8943 .doit = nl80211_get_wiphy,
8944 .dumpit = nl80211_dump_wiphy,
8945 .done = nl80211_dump_wiphy_done,
8946 .policy = nl80211_policy,
8947 /* can be retrieved by unprivileged users */
8948 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8949 NL80211_FLAG_NEED_RTNL,
8950 },
8951 {
8952 .cmd = NL80211_CMD_SET_WIPHY,
8953 .doit = nl80211_set_wiphy,
8954 .policy = nl80211_policy,
8955 .flags = GENL_ADMIN_PERM,
8956 .internal_flags = NL80211_FLAG_NEED_RTNL,
8957 },
8958 {
8959 .cmd = NL80211_CMD_GET_INTERFACE,
8960 .doit = nl80211_get_interface,
8961 .dumpit = nl80211_dump_interface,
8962 .policy = nl80211_policy,
8963 /* can be retrieved by unprivileged users */
8964 .internal_flags = NL80211_FLAG_NEED_WDEV |
8965 NL80211_FLAG_NEED_RTNL,
8966 },
8967 {
8968 .cmd = NL80211_CMD_SET_INTERFACE,
8969 .doit = nl80211_set_interface,
8970 .policy = nl80211_policy,
8971 .flags = GENL_ADMIN_PERM,
8972 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8973 NL80211_FLAG_NEED_RTNL,
8974 },
8975 {
8976 .cmd = NL80211_CMD_NEW_INTERFACE,
8977 .doit = nl80211_new_interface,
8978 .policy = nl80211_policy,
8979 .flags = GENL_ADMIN_PERM,
8980 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8981 NL80211_FLAG_NEED_RTNL,
8982 },
8983 {
8984 .cmd = NL80211_CMD_DEL_INTERFACE,
8985 .doit = nl80211_del_interface,
8986 .policy = nl80211_policy,
8987 .flags = GENL_ADMIN_PERM,
8988 .internal_flags = NL80211_FLAG_NEED_WDEV |
8989 NL80211_FLAG_NEED_RTNL,
8990 },
8991 {
8992 .cmd = NL80211_CMD_GET_KEY,
8993 .doit = nl80211_get_key,
8994 .policy = nl80211_policy,
8995 .flags = GENL_ADMIN_PERM,
8996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8997 NL80211_FLAG_NEED_RTNL,
8998 },
8999 {
9000 .cmd = NL80211_CMD_SET_KEY,
9001 .doit = nl80211_set_key,
9002 .policy = nl80211_policy,
9003 .flags = GENL_ADMIN_PERM,
9004 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9005 NL80211_FLAG_NEED_RTNL,
9006 },
9007 {
9008 .cmd = NL80211_CMD_NEW_KEY,
9009 .doit = nl80211_new_key,
9010 .policy = nl80211_policy,
9011 .flags = GENL_ADMIN_PERM,
9012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9013 NL80211_FLAG_NEED_RTNL,
9014 },
9015 {
9016 .cmd = NL80211_CMD_DEL_KEY,
9017 .doit = nl80211_del_key,
9018 .policy = nl80211_policy,
9019 .flags = GENL_ADMIN_PERM,
9020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9021 NL80211_FLAG_NEED_RTNL,
9022 },
9023 {
9024 .cmd = NL80211_CMD_SET_BEACON,
9025 .policy = nl80211_policy,
9026 .flags = GENL_ADMIN_PERM,
9027 .doit = nl80211_set_beacon,
9028 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9029 NL80211_FLAG_NEED_RTNL,
9030 },
9031 {
9032 .cmd = NL80211_CMD_START_AP,
9033 .policy = nl80211_policy,
9034 .flags = GENL_ADMIN_PERM,
9035 .doit = nl80211_start_ap,
9036 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9037 NL80211_FLAG_NEED_RTNL,
9038 },
9039 {
9040 .cmd = NL80211_CMD_STOP_AP,
9041 .policy = nl80211_policy,
9042 .flags = GENL_ADMIN_PERM,
9043 .doit = nl80211_stop_ap,
9044 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9045 NL80211_FLAG_NEED_RTNL,
9046 },
9047 {
9048 .cmd = NL80211_CMD_GET_STATION,
9049 .doit = nl80211_get_station,
9050 .dumpit = nl80211_dump_station,
9051 .policy = nl80211_policy,
9052 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9053 NL80211_FLAG_NEED_RTNL,
9054 },
9055 {
9056 .cmd = NL80211_CMD_SET_STATION,
9057 .doit = nl80211_set_station,
9058 .policy = nl80211_policy,
9059 .flags = GENL_ADMIN_PERM,
9060 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9061 NL80211_FLAG_NEED_RTNL,
9062 },
9063 {
9064 .cmd = NL80211_CMD_NEW_STATION,
9065 .doit = nl80211_new_station,
9066 .policy = nl80211_policy,
9067 .flags = GENL_ADMIN_PERM,
9068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9069 NL80211_FLAG_NEED_RTNL,
9070 },
9071 {
9072 .cmd = NL80211_CMD_DEL_STATION,
9073 .doit = nl80211_del_station,
9074 .policy = nl80211_policy,
9075 .flags = GENL_ADMIN_PERM,
9076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9077 NL80211_FLAG_NEED_RTNL,
9078 },
9079 {
9080 .cmd = NL80211_CMD_GET_MPATH,
9081 .doit = nl80211_get_mpath,
9082 .dumpit = nl80211_dump_mpath,
9083 .policy = nl80211_policy,
9084 .flags = GENL_ADMIN_PERM,
9085 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9086 NL80211_FLAG_NEED_RTNL,
9087 },
9088 {
9089 .cmd = NL80211_CMD_SET_MPATH,
9090 .doit = nl80211_set_mpath,
9091 .policy = nl80211_policy,
9092 .flags = GENL_ADMIN_PERM,
9093 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9094 NL80211_FLAG_NEED_RTNL,
9095 },
9096 {
9097 .cmd = NL80211_CMD_NEW_MPATH,
9098 .doit = nl80211_new_mpath,
9099 .policy = nl80211_policy,
9100 .flags = GENL_ADMIN_PERM,
9101 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9102 NL80211_FLAG_NEED_RTNL,
9103 },
9104 {
9105 .cmd = NL80211_CMD_DEL_MPATH,
9106 .doit = nl80211_del_mpath,
9107 .policy = nl80211_policy,
9108 .flags = GENL_ADMIN_PERM,
9109 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9110 NL80211_FLAG_NEED_RTNL,
9111 },
9112 {
9113 .cmd = NL80211_CMD_SET_BSS,
9114 .doit = nl80211_set_bss,
9115 .policy = nl80211_policy,
9116 .flags = GENL_ADMIN_PERM,
9117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9118 NL80211_FLAG_NEED_RTNL,
9119 },
9120 {
9121 .cmd = NL80211_CMD_GET_REG,
9122 .doit = nl80211_get_reg,
9123 .policy = nl80211_policy,
9124 .internal_flags = NL80211_FLAG_NEED_RTNL,
9125 /* can be retrieved by unprivileged users */
9126 },
9127 {
9128 .cmd = NL80211_CMD_SET_REG,
9129 .doit = nl80211_set_reg,
9130 .policy = nl80211_policy,
9131 .flags = GENL_ADMIN_PERM,
9132 .internal_flags = NL80211_FLAG_NEED_RTNL,
9133 },
9134 {
9135 .cmd = NL80211_CMD_REQ_SET_REG,
9136 .doit = nl80211_req_set_reg,
9137 .policy = nl80211_policy,
9138 .flags = GENL_ADMIN_PERM,
9139 },
9140 {
9141 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9142 .doit = nl80211_get_mesh_config,
9143 .policy = nl80211_policy,
9144 /* can be retrieved by unprivileged users */
9145 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9146 NL80211_FLAG_NEED_RTNL,
9147 },
9148 {
9149 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9150 .doit = nl80211_update_mesh_config,
9151 .policy = nl80211_policy,
9152 .flags = GENL_ADMIN_PERM,
9153 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9154 NL80211_FLAG_NEED_RTNL,
9155 },
9156 {
9157 .cmd = NL80211_CMD_TRIGGER_SCAN,
9158 .doit = nl80211_trigger_scan,
9159 .policy = nl80211_policy,
9160 .flags = GENL_ADMIN_PERM,
9161 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9162 NL80211_FLAG_NEED_RTNL,
9163 },
9164 {
9165 .cmd = NL80211_CMD_GET_SCAN,
9166 .policy = nl80211_policy,
9167 .dumpit = nl80211_dump_scan,
9168 },
9169 {
9170 .cmd = NL80211_CMD_START_SCHED_SCAN,
9171 .doit = nl80211_start_sched_scan,
9172 .policy = nl80211_policy,
9173 .flags = GENL_ADMIN_PERM,
9174 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9175 NL80211_FLAG_NEED_RTNL,
9176 },
9177 {
9178 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9179 .doit = nl80211_stop_sched_scan,
9180 .policy = nl80211_policy,
9181 .flags = GENL_ADMIN_PERM,
9182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9183 NL80211_FLAG_NEED_RTNL,
9184 },
9185 {
9186 .cmd = NL80211_CMD_AUTHENTICATE,
9187 .doit = nl80211_authenticate,
9188 .policy = nl80211_policy,
9189 .flags = GENL_ADMIN_PERM,
9190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9191 NL80211_FLAG_NEED_RTNL,
9192 },
9193 {
9194 .cmd = NL80211_CMD_ASSOCIATE,
9195 .doit = nl80211_associate,
9196 .policy = nl80211_policy,
9197 .flags = GENL_ADMIN_PERM,
9198 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9199 NL80211_FLAG_NEED_RTNL,
9200 },
9201 {
9202 .cmd = NL80211_CMD_DEAUTHENTICATE,
9203 .doit = nl80211_deauthenticate,
9204 .policy = nl80211_policy,
9205 .flags = GENL_ADMIN_PERM,
9206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9207 NL80211_FLAG_NEED_RTNL,
9208 },
9209 {
9210 .cmd = NL80211_CMD_DISASSOCIATE,
9211 .doit = nl80211_disassociate,
9212 .policy = nl80211_policy,
9213 .flags = GENL_ADMIN_PERM,
9214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9215 NL80211_FLAG_NEED_RTNL,
9216 },
9217 {
9218 .cmd = NL80211_CMD_JOIN_IBSS,
9219 .doit = nl80211_join_ibss,
9220 .policy = nl80211_policy,
9221 .flags = GENL_ADMIN_PERM,
9222 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9223 NL80211_FLAG_NEED_RTNL,
9224 },
9225 {
9226 .cmd = NL80211_CMD_LEAVE_IBSS,
9227 .doit = nl80211_leave_ibss,
9228 .policy = nl80211_policy,
9229 .flags = GENL_ADMIN_PERM,
9230 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9231 NL80211_FLAG_NEED_RTNL,
9232 },
9233 #ifdef CONFIG_NL80211_TESTMODE
9234 {
9235 .cmd = NL80211_CMD_TESTMODE,
9236 .doit = nl80211_testmode_do,
9237 .dumpit = nl80211_testmode_dump,
9238 .policy = nl80211_policy,
9239 .flags = GENL_ADMIN_PERM,
9240 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9241 NL80211_FLAG_NEED_RTNL,
9242 },
9243 #endif
9244 {
9245 .cmd = NL80211_CMD_CONNECT,
9246 .doit = nl80211_connect,
9247 .policy = nl80211_policy,
9248 .flags = GENL_ADMIN_PERM,
9249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9250 NL80211_FLAG_NEED_RTNL,
9251 },
9252 {
9253 .cmd = NL80211_CMD_DISCONNECT,
9254 .doit = nl80211_disconnect,
9255 .policy = nl80211_policy,
9256 .flags = GENL_ADMIN_PERM,
9257 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9258 NL80211_FLAG_NEED_RTNL,
9259 },
9260 {
9261 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9262 .doit = nl80211_wiphy_netns,
9263 .policy = nl80211_policy,
9264 .flags = GENL_ADMIN_PERM,
9265 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9266 NL80211_FLAG_NEED_RTNL,
9267 },
9268 {
9269 .cmd = NL80211_CMD_GET_SURVEY,
9270 .policy = nl80211_policy,
9271 .dumpit = nl80211_dump_survey,
9272 },
9273 {
9274 .cmd = NL80211_CMD_SET_PMKSA,
9275 .doit = nl80211_setdel_pmksa,
9276 .policy = nl80211_policy,
9277 .flags = GENL_ADMIN_PERM,
9278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9279 NL80211_FLAG_NEED_RTNL,
9280 },
9281 {
9282 .cmd = NL80211_CMD_DEL_PMKSA,
9283 .doit = nl80211_setdel_pmksa,
9284 .policy = nl80211_policy,
9285 .flags = GENL_ADMIN_PERM,
9286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9287 NL80211_FLAG_NEED_RTNL,
9288 },
9289 {
9290 .cmd = NL80211_CMD_FLUSH_PMKSA,
9291 .doit = nl80211_flush_pmksa,
9292 .policy = nl80211_policy,
9293 .flags = GENL_ADMIN_PERM,
9294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9295 NL80211_FLAG_NEED_RTNL,
9296 },
9297 {
9298 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9299 .doit = nl80211_remain_on_channel,
9300 .policy = nl80211_policy,
9301 .flags = GENL_ADMIN_PERM,
9302 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9303 NL80211_FLAG_NEED_RTNL,
9304 },
9305 {
9306 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9307 .doit = nl80211_cancel_remain_on_channel,
9308 .policy = nl80211_policy,
9309 .flags = GENL_ADMIN_PERM,
9310 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9311 NL80211_FLAG_NEED_RTNL,
9312 },
9313 {
9314 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9315 .doit = nl80211_set_tx_bitrate_mask,
9316 .policy = nl80211_policy,
9317 .flags = GENL_ADMIN_PERM,
9318 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9319 NL80211_FLAG_NEED_RTNL,
9320 },
9321 {
9322 .cmd = NL80211_CMD_REGISTER_FRAME,
9323 .doit = nl80211_register_mgmt,
9324 .policy = nl80211_policy,
9325 .flags = GENL_ADMIN_PERM,
9326 .internal_flags = NL80211_FLAG_NEED_WDEV |
9327 NL80211_FLAG_NEED_RTNL,
9328 },
9329 {
9330 .cmd = NL80211_CMD_FRAME,
9331 .doit = nl80211_tx_mgmt,
9332 .policy = nl80211_policy,
9333 .flags = GENL_ADMIN_PERM,
9334 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9335 NL80211_FLAG_NEED_RTNL,
9336 },
9337 {
9338 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9339 .doit = nl80211_tx_mgmt_cancel_wait,
9340 .policy = nl80211_policy,
9341 .flags = GENL_ADMIN_PERM,
9342 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9343 NL80211_FLAG_NEED_RTNL,
9344 },
9345 {
9346 .cmd = NL80211_CMD_SET_POWER_SAVE,
9347 .doit = nl80211_set_power_save,
9348 .policy = nl80211_policy,
9349 .flags = GENL_ADMIN_PERM,
9350 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9351 NL80211_FLAG_NEED_RTNL,
9352 },
9353 {
9354 .cmd = NL80211_CMD_GET_POWER_SAVE,
9355 .doit = nl80211_get_power_save,
9356 .policy = nl80211_policy,
9357 /* can be retrieved by unprivileged users */
9358 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9359 NL80211_FLAG_NEED_RTNL,
9360 },
9361 {
9362 .cmd = NL80211_CMD_SET_CQM,
9363 .doit = nl80211_set_cqm,
9364 .policy = nl80211_policy,
9365 .flags = GENL_ADMIN_PERM,
9366 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9367 NL80211_FLAG_NEED_RTNL,
9368 },
9369 {
9370 .cmd = NL80211_CMD_SET_CHANNEL,
9371 .doit = nl80211_set_channel,
9372 .policy = nl80211_policy,
9373 .flags = GENL_ADMIN_PERM,
9374 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9375 NL80211_FLAG_NEED_RTNL,
9376 },
9377 {
9378 .cmd = NL80211_CMD_SET_WDS_PEER,
9379 .doit = nl80211_set_wds_peer,
9380 .policy = nl80211_policy,
9381 .flags = GENL_ADMIN_PERM,
9382 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9383 NL80211_FLAG_NEED_RTNL,
9384 },
9385 {
9386 .cmd = NL80211_CMD_JOIN_MESH,
9387 .doit = nl80211_join_mesh,
9388 .policy = nl80211_policy,
9389 .flags = GENL_ADMIN_PERM,
9390 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9391 NL80211_FLAG_NEED_RTNL,
9392 },
9393 {
9394 .cmd = NL80211_CMD_LEAVE_MESH,
9395 .doit = nl80211_leave_mesh,
9396 .policy = nl80211_policy,
9397 .flags = GENL_ADMIN_PERM,
9398 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9399 NL80211_FLAG_NEED_RTNL,
9400 },
9401 #ifdef CONFIG_PM
9402 {
9403 .cmd = NL80211_CMD_GET_WOWLAN,
9404 .doit = nl80211_get_wowlan,
9405 .policy = nl80211_policy,
9406 /* can be retrieved by unprivileged users */
9407 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9408 NL80211_FLAG_NEED_RTNL,
9409 },
9410 {
9411 .cmd = NL80211_CMD_SET_WOWLAN,
9412 .doit = nl80211_set_wowlan,
9413 .policy = nl80211_policy,
9414 .flags = GENL_ADMIN_PERM,
9415 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9416 NL80211_FLAG_NEED_RTNL,
9417 },
9418 #endif
9419 {
9420 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9421 .doit = nl80211_set_rekey_data,
9422 .policy = nl80211_policy,
9423 .flags = GENL_ADMIN_PERM,
9424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9425 NL80211_FLAG_NEED_RTNL,
9426 },
9427 {
9428 .cmd = NL80211_CMD_TDLS_MGMT,
9429 .doit = nl80211_tdls_mgmt,
9430 .policy = nl80211_policy,
9431 .flags = GENL_ADMIN_PERM,
9432 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9433 NL80211_FLAG_NEED_RTNL,
9434 },
9435 {
9436 .cmd = NL80211_CMD_TDLS_OPER,
9437 .doit = nl80211_tdls_oper,
9438 .policy = nl80211_policy,
9439 .flags = GENL_ADMIN_PERM,
9440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9441 NL80211_FLAG_NEED_RTNL,
9442 },
9443 {
9444 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9445 .doit = nl80211_register_unexpected_frame,
9446 .policy = nl80211_policy,
9447 .flags = GENL_ADMIN_PERM,
9448 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9449 NL80211_FLAG_NEED_RTNL,
9450 },
9451 {
9452 .cmd = NL80211_CMD_PROBE_CLIENT,
9453 .doit = nl80211_probe_client,
9454 .policy = nl80211_policy,
9455 .flags = GENL_ADMIN_PERM,
9456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9457 NL80211_FLAG_NEED_RTNL,
9458 },
9459 {
9460 .cmd = NL80211_CMD_REGISTER_BEACONS,
9461 .doit = nl80211_register_beacons,
9462 .policy = nl80211_policy,
9463 .flags = GENL_ADMIN_PERM,
9464 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9465 NL80211_FLAG_NEED_RTNL,
9466 },
9467 {
9468 .cmd = NL80211_CMD_SET_NOACK_MAP,
9469 .doit = nl80211_set_noack_map,
9470 .policy = nl80211_policy,
9471 .flags = GENL_ADMIN_PERM,
9472 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9473 NL80211_FLAG_NEED_RTNL,
9474 },
9475 {
9476 .cmd = NL80211_CMD_START_P2P_DEVICE,
9477 .doit = nl80211_start_p2p_device,
9478 .policy = nl80211_policy,
9479 .flags = GENL_ADMIN_PERM,
9480 .internal_flags = NL80211_FLAG_NEED_WDEV |
9481 NL80211_FLAG_NEED_RTNL,
9482 },
9483 {
9484 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9485 .doit = nl80211_stop_p2p_device,
9486 .policy = nl80211_policy,
9487 .flags = GENL_ADMIN_PERM,
9488 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9489 NL80211_FLAG_NEED_RTNL,
9490 },
9491 {
9492 .cmd = NL80211_CMD_SET_MCAST_RATE,
9493 .doit = nl80211_set_mcast_rate,
9494 .policy = nl80211_policy,
9495 .flags = GENL_ADMIN_PERM,
9496 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9497 NL80211_FLAG_NEED_RTNL,
9498 },
9499 {
9500 .cmd = NL80211_CMD_SET_MAC_ACL,
9501 .doit = nl80211_set_mac_acl,
9502 .policy = nl80211_policy,
9503 .flags = GENL_ADMIN_PERM,
9504 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9505 NL80211_FLAG_NEED_RTNL,
9506 },
9507 {
9508 .cmd = NL80211_CMD_RADAR_DETECT,
9509 .doit = nl80211_start_radar_detection,
9510 .policy = nl80211_policy,
9511 .flags = GENL_ADMIN_PERM,
9512 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9513 NL80211_FLAG_NEED_RTNL,
9514 },
9515 {
9516 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9517 .doit = nl80211_get_protocol_features,
9518 .policy = nl80211_policy,
9519 },
9520 {
9521 .cmd = NL80211_CMD_UPDATE_FT_IES,
9522 .doit = nl80211_update_ft_ies,
9523 .policy = nl80211_policy,
9524 .flags = GENL_ADMIN_PERM,
9525 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9526 NL80211_FLAG_NEED_RTNL,
9527 },
9528 {
9529 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9530 .doit = nl80211_crit_protocol_start,
9531 .policy = nl80211_policy,
9532 .flags = GENL_ADMIN_PERM,
9533 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9534 NL80211_FLAG_NEED_RTNL,
9535 },
9536 {
9537 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9538 .doit = nl80211_crit_protocol_stop,
9539 .policy = nl80211_policy,
9540 .flags = GENL_ADMIN_PERM,
9541 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9542 NL80211_FLAG_NEED_RTNL,
9543 },
9544 {
9545 .cmd = NL80211_CMD_GET_COALESCE,
9546 .doit = nl80211_get_coalesce,
9547 .policy = nl80211_policy,
9548 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9549 NL80211_FLAG_NEED_RTNL,
9550 },
9551 {
9552 .cmd = NL80211_CMD_SET_COALESCE,
9553 .doit = nl80211_set_coalesce,
9554 .policy = nl80211_policy,
9555 .flags = GENL_ADMIN_PERM,
9556 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9557 NL80211_FLAG_NEED_RTNL,
9558 },
9559 {
9560 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9561 .doit = nl80211_channel_switch,
9562 .policy = nl80211_policy,
9563 .flags = GENL_ADMIN_PERM,
9564 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9565 NL80211_FLAG_NEED_RTNL,
9566 },
9567 };
9568
9569 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9570 .name = "mlme",
9571 };
9572
9573 /* multicast groups */
9574 static struct genl_multicast_group nl80211_config_mcgrp = {
9575 .name = "config",
9576 };
9577 static struct genl_multicast_group nl80211_scan_mcgrp = {
9578 .name = "scan",
9579 };
9580 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9581 .name = "regulatory",
9582 };
9583
9584 /* notification functions */
9585
9586 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9587 {
9588 struct sk_buff *msg;
9589 struct nl80211_dump_wiphy_state state = {};
9590
9591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9592 if (!msg)
9593 return;
9594
9595 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9596 nlmsg_free(msg);
9597 return;
9598 }
9599
9600 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9601 nl80211_config_mcgrp.id, GFP_KERNEL);
9602 }
9603
9604 static int nl80211_add_scan_req(struct sk_buff *msg,
9605 struct cfg80211_registered_device *rdev)
9606 {
9607 struct cfg80211_scan_request *req = rdev->scan_req;
9608 struct nlattr *nest;
9609 int i;
9610
9611 if (WARN_ON(!req))
9612 return 0;
9613
9614 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9615 if (!nest)
9616 goto nla_put_failure;
9617 for (i = 0; i < req->n_ssids; i++) {
9618 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9619 goto nla_put_failure;
9620 }
9621 nla_nest_end(msg, nest);
9622
9623 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9624 if (!nest)
9625 goto nla_put_failure;
9626 for (i = 0; i < req->n_channels; i++) {
9627 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9628 goto nla_put_failure;
9629 }
9630 nla_nest_end(msg, nest);
9631
9632 if (req->ie &&
9633 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9634 goto nla_put_failure;
9635
9636 if (req->flags)
9637 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9638
9639 return 0;
9640 nla_put_failure:
9641 return -ENOBUFS;
9642 }
9643
9644 static int nl80211_send_scan_msg(struct sk_buff *msg,
9645 struct cfg80211_registered_device *rdev,
9646 struct wireless_dev *wdev,
9647 u32 portid, u32 seq, int flags,
9648 u32 cmd)
9649 {
9650 void *hdr;
9651
9652 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9653 if (!hdr)
9654 return -1;
9655
9656 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9657 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9658 wdev->netdev->ifindex)) ||
9659 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9660 goto nla_put_failure;
9661
9662 /* ignore errors and send incomplete event anyway */
9663 nl80211_add_scan_req(msg, rdev);
9664
9665 return genlmsg_end(msg, hdr);
9666
9667 nla_put_failure:
9668 genlmsg_cancel(msg, hdr);
9669 return -EMSGSIZE;
9670 }
9671
9672 static int
9673 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9674 struct cfg80211_registered_device *rdev,
9675 struct net_device *netdev,
9676 u32 portid, u32 seq, int flags, u32 cmd)
9677 {
9678 void *hdr;
9679
9680 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9681 if (!hdr)
9682 return -1;
9683
9684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9685 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9686 goto nla_put_failure;
9687
9688 return genlmsg_end(msg, hdr);
9689
9690 nla_put_failure:
9691 genlmsg_cancel(msg, hdr);
9692 return -EMSGSIZE;
9693 }
9694
9695 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9696 struct wireless_dev *wdev)
9697 {
9698 struct sk_buff *msg;
9699
9700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9701 if (!msg)
9702 return;
9703
9704 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9705 NL80211_CMD_TRIGGER_SCAN) < 0) {
9706 nlmsg_free(msg);
9707 return;
9708 }
9709
9710 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9711 nl80211_scan_mcgrp.id, GFP_KERNEL);
9712 }
9713
9714 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9715 struct wireless_dev *wdev)
9716 {
9717 struct sk_buff *msg;
9718
9719 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9720 if (!msg)
9721 return;
9722
9723 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9724 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9725 nlmsg_free(msg);
9726 return;
9727 }
9728
9729 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9730 nl80211_scan_mcgrp.id, GFP_KERNEL);
9731 }
9732
9733 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9734 struct wireless_dev *wdev)
9735 {
9736 struct sk_buff *msg;
9737
9738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9739 if (!msg)
9740 return;
9741
9742 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9743 NL80211_CMD_SCAN_ABORTED) < 0) {
9744 nlmsg_free(msg);
9745 return;
9746 }
9747
9748 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9749 nl80211_scan_mcgrp.id, GFP_KERNEL);
9750 }
9751
9752 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9753 struct net_device *netdev)
9754 {
9755 struct sk_buff *msg;
9756
9757 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9758 if (!msg)
9759 return;
9760
9761 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9762 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9763 nlmsg_free(msg);
9764 return;
9765 }
9766
9767 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9768 nl80211_scan_mcgrp.id, GFP_KERNEL);
9769 }
9770
9771 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9772 struct net_device *netdev, u32 cmd)
9773 {
9774 struct sk_buff *msg;
9775
9776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9777 if (!msg)
9778 return;
9779
9780 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9781 nlmsg_free(msg);
9782 return;
9783 }
9784
9785 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9786 nl80211_scan_mcgrp.id, GFP_KERNEL);
9787 }
9788
9789 /*
9790 * This can happen on global regulatory changes or device specific settings
9791 * based on custom world regulatory domains.
9792 */
9793 void nl80211_send_reg_change_event(struct regulatory_request *request)
9794 {
9795 struct sk_buff *msg;
9796 void *hdr;
9797
9798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9799 if (!msg)
9800 return;
9801
9802 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9803 if (!hdr) {
9804 nlmsg_free(msg);
9805 return;
9806 }
9807
9808 /* Userspace can always count this one always being set */
9809 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9810 goto nla_put_failure;
9811
9812 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9813 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9814 NL80211_REGDOM_TYPE_WORLD))
9815 goto nla_put_failure;
9816 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9817 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9818 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9819 goto nla_put_failure;
9820 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9821 request->intersect) {
9822 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9823 NL80211_REGDOM_TYPE_INTERSECTION))
9824 goto nla_put_failure;
9825 } else {
9826 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9827 NL80211_REGDOM_TYPE_COUNTRY) ||
9828 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9829 request->alpha2))
9830 goto nla_put_failure;
9831 }
9832
9833 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9834 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9835 goto nla_put_failure;
9836
9837 genlmsg_end(msg, hdr);
9838
9839 rcu_read_lock();
9840 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9841 GFP_ATOMIC);
9842 rcu_read_unlock();
9843
9844 return;
9845
9846 nla_put_failure:
9847 genlmsg_cancel(msg, hdr);
9848 nlmsg_free(msg);
9849 }
9850
9851 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9852 struct net_device *netdev,
9853 const u8 *buf, size_t len,
9854 enum nl80211_commands cmd, gfp_t gfp)
9855 {
9856 struct sk_buff *msg;
9857 void *hdr;
9858
9859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9860 if (!msg)
9861 return;
9862
9863 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9864 if (!hdr) {
9865 nlmsg_free(msg);
9866 return;
9867 }
9868
9869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9871 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9872 goto nla_put_failure;
9873
9874 genlmsg_end(msg, hdr);
9875
9876 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9877 nl80211_mlme_mcgrp.id, gfp);
9878 return;
9879
9880 nla_put_failure:
9881 genlmsg_cancel(msg, hdr);
9882 nlmsg_free(msg);
9883 }
9884
9885 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9886 struct net_device *netdev, const u8 *buf,
9887 size_t len, gfp_t gfp)
9888 {
9889 nl80211_send_mlme_event(rdev, netdev, buf, len,
9890 NL80211_CMD_AUTHENTICATE, gfp);
9891 }
9892
9893 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9894 struct net_device *netdev, const u8 *buf,
9895 size_t len, gfp_t gfp)
9896 {
9897 nl80211_send_mlme_event(rdev, netdev, buf, len,
9898 NL80211_CMD_ASSOCIATE, gfp);
9899 }
9900
9901 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9902 struct net_device *netdev, const u8 *buf,
9903 size_t len, gfp_t gfp)
9904 {
9905 nl80211_send_mlme_event(rdev, netdev, buf, len,
9906 NL80211_CMD_DEAUTHENTICATE, gfp);
9907 }
9908
9909 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9910 struct net_device *netdev, const u8 *buf,
9911 size_t len, gfp_t gfp)
9912 {
9913 nl80211_send_mlme_event(rdev, netdev, buf, len,
9914 NL80211_CMD_DISASSOCIATE, gfp);
9915 }
9916
9917 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9918 size_t len)
9919 {
9920 struct wireless_dev *wdev = dev->ieee80211_ptr;
9921 struct wiphy *wiphy = wdev->wiphy;
9922 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9923 const struct ieee80211_mgmt *mgmt = (void *)buf;
9924 u32 cmd;
9925
9926 if (WARN_ON(len < 2))
9927 return;
9928
9929 if (ieee80211_is_deauth(mgmt->frame_control))
9930 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9931 else
9932 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9933
9934 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9935 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9936 }
9937 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9938
9939 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9940 struct net_device *netdev, int cmd,
9941 const u8 *addr, gfp_t gfp)
9942 {
9943 struct sk_buff *msg;
9944 void *hdr;
9945
9946 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9947 if (!msg)
9948 return;
9949
9950 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9951 if (!hdr) {
9952 nlmsg_free(msg);
9953 return;
9954 }
9955
9956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9957 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9958 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9959 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9960 goto nla_put_failure;
9961
9962 genlmsg_end(msg, hdr);
9963
9964 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9965 nl80211_mlme_mcgrp.id, gfp);
9966 return;
9967
9968 nla_put_failure:
9969 genlmsg_cancel(msg, hdr);
9970 nlmsg_free(msg);
9971 }
9972
9973 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9974 struct net_device *netdev, const u8 *addr,
9975 gfp_t gfp)
9976 {
9977 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9978 addr, gfp);
9979 }
9980
9981 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9982 struct net_device *netdev, const u8 *addr,
9983 gfp_t gfp)
9984 {
9985 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9986 addr, gfp);
9987 }
9988
9989 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9990 struct net_device *netdev, const u8 *bssid,
9991 const u8 *req_ie, size_t req_ie_len,
9992 const u8 *resp_ie, size_t resp_ie_len,
9993 u16 status, gfp_t gfp)
9994 {
9995 struct sk_buff *msg;
9996 void *hdr;
9997
9998 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9999 if (!msg)
10000 return;
10001
10002 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10003 if (!hdr) {
10004 nlmsg_free(msg);
10005 return;
10006 }
10007
10008 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10009 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10010 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10011 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10012 (req_ie &&
10013 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10014 (resp_ie &&
10015 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10016 goto nla_put_failure;
10017
10018 genlmsg_end(msg, hdr);
10019
10020 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10021 nl80211_mlme_mcgrp.id, gfp);
10022 return;
10023
10024 nla_put_failure:
10025 genlmsg_cancel(msg, hdr);
10026 nlmsg_free(msg);
10027
10028 }
10029
10030 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10031 struct net_device *netdev, const u8 *bssid,
10032 const u8 *req_ie, size_t req_ie_len,
10033 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10034 {
10035 struct sk_buff *msg;
10036 void *hdr;
10037
10038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10039 if (!msg)
10040 return;
10041
10042 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10043 if (!hdr) {
10044 nlmsg_free(msg);
10045 return;
10046 }
10047
10048 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10049 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10050 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10051 (req_ie &&
10052 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10053 (resp_ie &&
10054 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10055 goto nla_put_failure;
10056
10057 genlmsg_end(msg, hdr);
10058
10059 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10060 nl80211_mlme_mcgrp.id, gfp);
10061 return;
10062
10063 nla_put_failure:
10064 genlmsg_cancel(msg, hdr);
10065 nlmsg_free(msg);
10066
10067 }
10068
10069 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10070 struct net_device *netdev, u16 reason,
10071 const u8 *ie, size_t ie_len, bool from_ap)
10072 {
10073 struct sk_buff *msg;
10074 void *hdr;
10075
10076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10077 if (!msg)
10078 return;
10079
10080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10081 if (!hdr) {
10082 nlmsg_free(msg);
10083 return;
10084 }
10085
10086 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10087 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10088 (from_ap && reason &&
10089 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10090 (from_ap &&
10091 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10092 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10093 goto nla_put_failure;
10094
10095 genlmsg_end(msg, hdr);
10096
10097 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10098 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10099 return;
10100
10101 nla_put_failure:
10102 genlmsg_cancel(msg, hdr);
10103 nlmsg_free(msg);
10104
10105 }
10106
10107 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10108 struct net_device *netdev, const u8 *bssid,
10109 gfp_t gfp)
10110 {
10111 struct sk_buff *msg;
10112 void *hdr;
10113
10114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10115 if (!msg)
10116 return;
10117
10118 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10119 if (!hdr) {
10120 nlmsg_free(msg);
10121 return;
10122 }
10123
10124 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10125 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10126 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10127 goto nla_put_failure;
10128
10129 genlmsg_end(msg, hdr);
10130
10131 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10132 nl80211_mlme_mcgrp.id, gfp);
10133 return;
10134
10135 nla_put_failure:
10136 genlmsg_cancel(msg, hdr);
10137 nlmsg_free(msg);
10138 }
10139
10140 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10141 const u8* ie, u8 ie_len, gfp_t gfp)
10142 {
10143 struct wireless_dev *wdev = dev->ieee80211_ptr;
10144 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10145 struct sk_buff *msg;
10146 void *hdr;
10147
10148 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10149 return;
10150
10151 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10152
10153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10154 if (!msg)
10155 return;
10156
10157 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10158 if (!hdr) {
10159 nlmsg_free(msg);
10160 return;
10161 }
10162
10163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10164 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10165 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10166 (ie_len && ie &&
10167 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10168 goto nla_put_failure;
10169
10170 genlmsg_end(msg, hdr);
10171
10172 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10173 nl80211_mlme_mcgrp.id, gfp);
10174 return;
10175
10176 nla_put_failure:
10177 genlmsg_cancel(msg, hdr);
10178 nlmsg_free(msg);
10179 }
10180 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10181
10182 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10183 struct net_device *netdev, const u8 *addr,
10184 enum nl80211_key_type key_type, int key_id,
10185 const u8 *tsc, gfp_t gfp)
10186 {
10187 struct sk_buff *msg;
10188 void *hdr;
10189
10190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10191 if (!msg)
10192 return;
10193
10194 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10195 if (!hdr) {
10196 nlmsg_free(msg);
10197 return;
10198 }
10199
10200 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10201 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10202 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10203 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10204 (key_id != -1 &&
10205 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10206 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10207 goto nla_put_failure;
10208
10209 genlmsg_end(msg, hdr);
10210
10211 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10212 nl80211_mlme_mcgrp.id, gfp);
10213 return;
10214
10215 nla_put_failure:
10216 genlmsg_cancel(msg, hdr);
10217 nlmsg_free(msg);
10218 }
10219
10220 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10221 struct ieee80211_channel *channel_before,
10222 struct ieee80211_channel *channel_after)
10223 {
10224 struct sk_buff *msg;
10225 void *hdr;
10226 struct nlattr *nl_freq;
10227
10228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10229 if (!msg)
10230 return;
10231
10232 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10233 if (!hdr) {
10234 nlmsg_free(msg);
10235 return;
10236 }
10237
10238 /*
10239 * Since we are applying the beacon hint to a wiphy we know its
10240 * wiphy_idx is valid
10241 */
10242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10243 goto nla_put_failure;
10244
10245 /* Before */
10246 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10247 if (!nl_freq)
10248 goto nla_put_failure;
10249 if (nl80211_msg_put_channel(msg, channel_before, false))
10250 goto nla_put_failure;
10251 nla_nest_end(msg, nl_freq);
10252
10253 /* After */
10254 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10255 if (!nl_freq)
10256 goto nla_put_failure;
10257 if (nl80211_msg_put_channel(msg, channel_after, false))
10258 goto nla_put_failure;
10259 nla_nest_end(msg, nl_freq);
10260
10261 genlmsg_end(msg, hdr);
10262
10263 rcu_read_lock();
10264 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10265 GFP_ATOMIC);
10266 rcu_read_unlock();
10267
10268 return;
10269
10270 nla_put_failure:
10271 genlmsg_cancel(msg, hdr);
10272 nlmsg_free(msg);
10273 }
10274
10275 static void nl80211_send_remain_on_chan_event(
10276 int cmd, struct cfg80211_registered_device *rdev,
10277 struct wireless_dev *wdev, u64 cookie,
10278 struct ieee80211_channel *chan,
10279 unsigned int duration, gfp_t gfp)
10280 {
10281 struct sk_buff *msg;
10282 void *hdr;
10283
10284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10285 if (!msg)
10286 return;
10287
10288 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10289 if (!hdr) {
10290 nlmsg_free(msg);
10291 return;
10292 }
10293
10294 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10295 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10296 wdev->netdev->ifindex)) ||
10297 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10298 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10299 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10300 NL80211_CHAN_NO_HT) ||
10301 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10302 goto nla_put_failure;
10303
10304 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10305 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10306 goto nla_put_failure;
10307
10308 genlmsg_end(msg, hdr);
10309
10310 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10311 nl80211_mlme_mcgrp.id, gfp);
10312 return;
10313
10314 nla_put_failure:
10315 genlmsg_cancel(msg, hdr);
10316 nlmsg_free(msg);
10317 }
10318
10319 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10320 struct ieee80211_channel *chan,
10321 unsigned int duration, gfp_t gfp)
10322 {
10323 struct wiphy *wiphy = wdev->wiphy;
10324 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10325
10326 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10327 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10328 rdev, wdev, cookie, chan,
10329 duration, gfp);
10330 }
10331 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10332
10333 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10334 struct ieee80211_channel *chan,
10335 gfp_t gfp)
10336 {
10337 struct wiphy *wiphy = wdev->wiphy;
10338 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10339
10340 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10341 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10342 rdev, wdev, cookie, chan, 0, gfp);
10343 }
10344 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10345
10346 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10347 struct station_info *sinfo, gfp_t gfp)
10348 {
10349 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10350 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10351 struct sk_buff *msg;
10352
10353 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10354
10355 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10356 if (!msg)
10357 return;
10358
10359 if (nl80211_send_station(msg, 0, 0, 0,
10360 rdev, dev, mac_addr, sinfo) < 0) {
10361 nlmsg_free(msg);
10362 return;
10363 }
10364
10365 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10366 nl80211_mlme_mcgrp.id, gfp);
10367 }
10368 EXPORT_SYMBOL(cfg80211_new_sta);
10369
10370 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10371 {
10372 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10373 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10374 struct sk_buff *msg;
10375 void *hdr;
10376
10377 trace_cfg80211_del_sta(dev, mac_addr);
10378
10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380 if (!msg)
10381 return;
10382
10383 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10384 if (!hdr) {
10385 nlmsg_free(msg);
10386 return;
10387 }
10388
10389 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10390 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10391 goto nla_put_failure;
10392
10393 genlmsg_end(msg, hdr);
10394
10395 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10396 nl80211_mlme_mcgrp.id, gfp);
10397 return;
10398
10399 nla_put_failure:
10400 genlmsg_cancel(msg, hdr);
10401 nlmsg_free(msg);
10402 }
10403 EXPORT_SYMBOL(cfg80211_del_sta);
10404
10405 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10406 enum nl80211_connect_failed_reason reason,
10407 gfp_t gfp)
10408 {
10409 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10410 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10411 struct sk_buff *msg;
10412 void *hdr;
10413
10414 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10415 if (!msg)
10416 return;
10417
10418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10419 if (!hdr) {
10420 nlmsg_free(msg);
10421 return;
10422 }
10423
10424 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10425 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10426 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10427 goto nla_put_failure;
10428
10429 genlmsg_end(msg, hdr);
10430
10431 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10432 nl80211_mlme_mcgrp.id, gfp);
10433 return;
10434
10435 nla_put_failure:
10436 genlmsg_cancel(msg, hdr);
10437 nlmsg_free(msg);
10438 }
10439 EXPORT_SYMBOL(cfg80211_conn_failed);
10440
10441 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10442 const u8 *addr, gfp_t gfp)
10443 {
10444 struct wireless_dev *wdev = dev->ieee80211_ptr;
10445 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10446 struct sk_buff *msg;
10447 void *hdr;
10448 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10449
10450 if (!nlportid)
10451 return false;
10452
10453 msg = nlmsg_new(100, gfp);
10454 if (!msg)
10455 return true;
10456
10457 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10458 if (!hdr) {
10459 nlmsg_free(msg);
10460 return true;
10461 }
10462
10463 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10464 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10465 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10466 goto nla_put_failure;
10467
10468 genlmsg_end(msg, hdr);
10469 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10470 return true;
10471
10472 nla_put_failure:
10473 genlmsg_cancel(msg, hdr);
10474 nlmsg_free(msg);
10475 return true;
10476 }
10477
10478 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10479 const u8 *addr, gfp_t gfp)
10480 {
10481 struct wireless_dev *wdev = dev->ieee80211_ptr;
10482 bool ret;
10483
10484 trace_cfg80211_rx_spurious_frame(dev, addr);
10485
10486 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10487 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10488 trace_cfg80211_return_bool(false);
10489 return false;
10490 }
10491 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10492 addr, gfp);
10493 trace_cfg80211_return_bool(ret);
10494 return ret;
10495 }
10496 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10497
10498 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10499 const u8 *addr, gfp_t gfp)
10500 {
10501 struct wireless_dev *wdev = dev->ieee80211_ptr;
10502 bool ret;
10503
10504 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10505
10506 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10507 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10508 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10509 trace_cfg80211_return_bool(false);
10510 return false;
10511 }
10512 ret = __nl80211_unexpected_frame(dev,
10513 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10514 addr, gfp);
10515 trace_cfg80211_return_bool(ret);
10516 return ret;
10517 }
10518 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10519
10520 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10521 struct wireless_dev *wdev, u32 nlportid,
10522 int freq, int sig_dbm,
10523 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10524 {
10525 struct net_device *netdev = wdev->netdev;
10526 struct sk_buff *msg;
10527 void *hdr;
10528
10529 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10530 if (!msg)
10531 return -ENOMEM;
10532
10533 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10534 if (!hdr) {
10535 nlmsg_free(msg);
10536 return -ENOMEM;
10537 }
10538
10539 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10540 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10541 netdev->ifindex)) ||
10542 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10543 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10544 (sig_dbm &&
10545 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10546 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10547 (flags &&
10548 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10549 goto nla_put_failure;
10550
10551 genlmsg_end(msg, hdr);
10552
10553 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10554
10555 nla_put_failure:
10556 genlmsg_cancel(msg, hdr);
10557 nlmsg_free(msg);
10558 return -ENOBUFS;
10559 }
10560
10561 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10562 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10563 {
10564 struct wiphy *wiphy = wdev->wiphy;
10565 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10566 struct net_device *netdev = wdev->netdev;
10567 struct sk_buff *msg;
10568 void *hdr;
10569
10570 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10571
10572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10573 if (!msg)
10574 return;
10575
10576 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10577 if (!hdr) {
10578 nlmsg_free(msg);
10579 return;
10580 }
10581
10582 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10583 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10584 netdev->ifindex)) ||
10585 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10586 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10587 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10588 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10589 goto nla_put_failure;
10590
10591 genlmsg_end(msg, hdr);
10592
10593 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10594 nl80211_mlme_mcgrp.id, gfp);
10595 return;
10596
10597 nla_put_failure:
10598 genlmsg_cancel(msg, hdr);
10599 nlmsg_free(msg);
10600 }
10601 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10602
10603 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10604 enum nl80211_cqm_rssi_threshold_event rssi_event,
10605 gfp_t gfp)
10606 {
10607 struct wireless_dev *wdev = dev->ieee80211_ptr;
10608 struct wiphy *wiphy = wdev->wiphy;
10609 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10610 struct sk_buff *msg;
10611 struct nlattr *pinfoattr;
10612 void *hdr;
10613
10614 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10615
10616 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10617 if (!msg)
10618 return;
10619
10620 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10621 if (!hdr) {
10622 nlmsg_free(msg);
10623 return;
10624 }
10625
10626 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10627 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10628 goto nla_put_failure;
10629
10630 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10631 if (!pinfoattr)
10632 goto nla_put_failure;
10633
10634 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10635 rssi_event))
10636 goto nla_put_failure;
10637
10638 nla_nest_end(msg, pinfoattr);
10639
10640 genlmsg_end(msg, hdr);
10641
10642 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10643 nl80211_mlme_mcgrp.id, gfp);
10644 return;
10645
10646 nla_put_failure:
10647 genlmsg_cancel(msg, hdr);
10648 nlmsg_free(msg);
10649 }
10650 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10651
10652 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10653 struct net_device *netdev, const u8 *bssid,
10654 const u8 *replay_ctr, gfp_t gfp)
10655 {
10656 struct sk_buff *msg;
10657 struct nlattr *rekey_attr;
10658 void *hdr;
10659
10660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10661 if (!msg)
10662 return;
10663
10664 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10665 if (!hdr) {
10666 nlmsg_free(msg);
10667 return;
10668 }
10669
10670 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10671 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10672 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10673 goto nla_put_failure;
10674
10675 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10676 if (!rekey_attr)
10677 goto nla_put_failure;
10678
10679 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10680 NL80211_REPLAY_CTR_LEN, replay_ctr))
10681 goto nla_put_failure;
10682
10683 nla_nest_end(msg, rekey_attr);
10684
10685 genlmsg_end(msg, hdr);
10686
10687 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10688 nl80211_mlme_mcgrp.id, gfp);
10689 return;
10690
10691 nla_put_failure:
10692 genlmsg_cancel(msg, hdr);
10693 nlmsg_free(msg);
10694 }
10695
10696 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10697 const u8 *replay_ctr, gfp_t gfp)
10698 {
10699 struct wireless_dev *wdev = dev->ieee80211_ptr;
10700 struct wiphy *wiphy = wdev->wiphy;
10701 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10702
10703 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10704 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10705 }
10706 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10707
10708 static void
10709 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10710 struct net_device *netdev, int index,
10711 const u8 *bssid, bool preauth, gfp_t gfp)
10712 {
10713 struct sk_buff *msg;
10714 struct nlattr *attr;
10715 void *hdr;
10716
10717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10718 if (!msg)
10719 return;
10720
10721 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10722 if (!hdr) {
10723 nlmsg_free(msg);
10724 return;
10725 }
10726
10727 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10728 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10729 goto nla_put_failure;
10730
10731 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10732 if (!attr)
10733 goto nla_put_failure;
10734
10735 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10736 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10737 (preauth &&
10738 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10739 goto nla_put_failure;
10740
10741 nla_nest_end(msg, attr);
10742
10743 genlmsg_end(msg, hdr);
10744
10745 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10746 nl80211_mlme_mcgrp.id, gfp);
10747 return;
10748
10749 nla_put_failure:
10750 genlmsg_cancel(msg, hdr);
10751 nlmsg_free(msg);
10752 }
10753
10754 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10755 const u8 *bssid, bool preauth, gfp_t gfp)
10756 {
10757 struct wireless_dev *wdev = dev->ieee80211_ptr;
10758 struct wiphy *wiphy = wdev->wiphy;
10759 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10760
10761 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10762 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10763 }
10764 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10765
10766 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10767 struct net_device *netdev,
10768 struct cfg80211_chan_def *chandef,
10769 gfp_t gfp)
10770 {
10771 struct sk_buff *msg;
10772 void *hdr;
10773
10774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10775 if (!msg)
10776 return;
10777
10778 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10779 if (!hdr) {
10780 nlmsg_free(msg);
10781 return;
10782 }
10783
10784 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10785 goto nla_put_failure;
10786
10787 if (nl80211_send_chandef(msg, chandef))
10788 goto nla_put_failure;
10789
10790 genlmsg_end(msg, hdr);
10791
10792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10793 nl80211_mlme_mcgrp.id, gfp);
10794 return;
10795
10796 nla_put_failure:
10797 genlmsg_cancel(msg, hdr);
10798 nlmsg_free(msg);
10799 }
10800
10801 void cfg80211_ch_switch_notify(struct net_device *dev,
10802 struct cfg80211_chan_def *chandef)
10803 {
10804 struct wireless_dev *wdev = dev->ieee80211_ptr;
10805 struct wiphy *wiphy = wdev->wiphy;
10806 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10807
10808 trace_cfg80211_ch_switch_notify(dev, chandef);
10809
10810 wdev_lock(wdev);
10811
10812 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10813 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10814 wdev->iftype != NL80211_IFTYPE_ADHOC &&
10815 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10816 goto out;
10817
10818 wdev->channel = chandef->chan;
10819 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10820 out:
10821 wdev_unlock(wdev);
10822 return;
10823 }
10824 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10825
10826 void cfg80211_cqm_txe_notify(struct net_device *dev,
10827 const u8 *peer, u32 num_packets,
10828 u32 rate, u32 intvl, gfp_t gfp)
10829 {
10830 struct wireless_dev *wdev = dev->ieee80211_ptr;
10831 struct wiphy *wiphy = wdev->wiphy;
10832 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10833 struct sk_buff *msg;
10834 struct nlattr *pinfoattr;
10835 void *hdr;
10836
10837 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10838 if (!msg)
10839 return;
10840
10841 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10842 if (!hdr) {
10843 nlmsg_free(msg);
10844 return;
10845 }
10846
10847 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10848 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10849 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10850 goto nla_put_failure;
10851
10852 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10853 if (!pinfoattr)
10854 goto nla_put_failure;
10855
10856 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10857 goto nla_put_failure;
10858
10859 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10860 goto nla_put_failure;
10861
10862 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10863 goto nla_put_failure;
10864
10865 nla_nest_end(msg, pinfoattr);
10866
10867 genlmsg_end(msg, hdr);
10868
10869 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10870 nl80211_mlme_mcgrp.id, gfp);
10871 return;
10872
10873 nla_put_failure:
10874 genlmsg_cancel(msg, hdr);
10875 nlmsg_free(msg);
10876 }
10877 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10878
10879 void
10880 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10881 const struct cfg80211_chan_def *chandef,
10882 enum nl80211_radar_event event,
10883 struct net_device *netdev, gfp_t gfp)
10884 {
10885 struct sk_buff *msg;
10886 void *hdr;
10887
10888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10889 if (!msg)
10890 return;
10891
10892 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10893 if (!hdr) {
10894 nlmsg_free(msg);
10895 return;
10896 }
10897
10898 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10899 goto nla_put_failure;
10900
10901 /* NOP and radar events don't need a netdev parameter */
10902 if (netdev) {
10903 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10904
10905 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10906 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10907 goto nla_put_failure;
10908 }
10909
10910 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10911 goto nla_put_failure;
10912
10913 if (nl80211_send_chandef(msg, chandef))
10914 goto nla_put_failure;
10915
10916 genlmsg_end(msg, hdr);
10917
10918 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10919 nl80211_mlme_mcgrp.id, gfp);
10920 return;
10921
10922 nla_put_failure:
10923 genlmsg_cancel(msg, hdr);
10924 nlmsg_free(msg);
10925 }
10926
10927 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10928 const u8 *peer, u32 num_packets, gfp_t gfp)
10929 {
10930 struct wireless_dev *wdev = dev->ieee80211_ptr;
10931 struct wiphy *wiphy = wdev->wiphy;
10932 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10933 struct sk_buff *msg;
10934 struct nlattr *pinfoattr;
10935 void *hdr;
10936
10937 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10938
10939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10940 if (!msg)
10941 return;
10942
10943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10944 if (!hdr) {
10945 nlmsg_free(msg);
10946 return;
10947 }
10948
10949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10951 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10952 goto nla_put_failure;
10953
10954 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10955 if (!pinfoattr)
10956 goto nla_put_failure;
10957
10958 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10959 goto nla_put_failure;
10960
10961 nla_nest_end(msg, pinfoattr);
10962
10963 genlmsg_end(msg, hdr);
10964
10965 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10966 nl80211_mlme_mcgrp.id, gfp);
10967 return;
10968
10969 nla_put_failure:
10970 genlmsg_cancel(msg, hdr);
10971 nlmsg_free(msg);
10972 }
10973 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10974
10975 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10976 u64 cookie, bool acked, gfp_t gfp)
10977 {
10978 struct wireless_dev *wdev = dev->ieee80211_ptr;
10979 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10980 struct sk_buff *msg;
10981 void *hdr;
10982
10983 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10984
10985 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10986
10987 if (!msg)
10988 return;
10989
10990 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10991 if (!hdr) {
10992 nlmsg_free(msg);
10993 return;
10994 }
10995
10996 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10997 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10998 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10999 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11000 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11001 goto nla_put_failure;
11002
11003 genlmsg_end(msg, hdr);
11004
11005 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11006 nl80211_mlme_mcgrp.id, gfp);
11007 return;
11008
11009 nla_put_failure:
11010 genlmsg_cancel(msg, hdr);
11011 nlmsg_free(msg);
11012 }
11013 EXPORT_SYMBOL(cfg80211_probe_status);
11014
11015 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11016 const u8 *frame, size_t len,
11017 int freq, int sig_dbm)
11018 {
11019 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11020 struct sk_buff *msg;
11021 void *hdr;
11022 struct cfg80211_beacon_registration *reg;
11023
11024 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11025
11026 spin_lock_bh(&rdev->beacon_registrations_lock);
11027 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11028 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11029 if (!msg) {
11030 spin_unlock_bh(&rdev->beacon_registrations_lock);
11031 return;
11032 }
11033
11034 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11035 if (!hdr)
11036 goto nla_put_failure;
11037
11038 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11039 (freq &&
11040 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11041 (sig_dbm &&
11042 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11043 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11044 goto nla_put_failure;
11045
11046 genlmsg_end(msg, hdr);
11047
11048 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11049 }
11050 spin_unlock_bh(&rdev->beacon_registrations_lock);
11051 return;
11052
11053 nla_put_failure:
11054 spin_unlock_bh(&rdev->beacon_registrations_lock);
11055 if (hdr)
11056 genlmsg_cancel(msg, hdr);
11057 nlmsg_free(msg);
11058 }
11059 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11060
11061 #ifdef CONFIG_PM
11062 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11063 struct cfg80211_wowlan_wakeup *wakeup,
11064 gfp_t gfp)
11065 {
11066 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11067 struct sk_buff *msg;
11068 void *hdr;
11069 int size = 200;
11070
11071 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11072
11073 if (wakeup)
11074 size += wakeup->packet_present_len;
11075
11076 msg = nlmsg_new(size, gfp);
11077 if (!msg)
11078 return;
11079
11080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11081 if (!hdr)
11082 goto free_msg;
11083
11084 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11085 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11086 goto free_msg;
11087
11088 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11089 wdev->netdev->ifindex))
11090 goto free_msg;
11091
11092 if (wakeup) {
11093 struct nlattr *reasons;
11094
11095 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11096
11097 if (wakeup->disconnect &&
11098 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11099 goto free_msg;
11100 if (wakeup->magic_pkt &&
11101 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11102 goto free_msg;
11103 if (wakeup->gtk_rekey_failure &&
11104 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11105 goto free_msg;
11106 if (wakeup->eap_identity_req &&
11107 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11108 goto free_msg;
11109 if (wakeup->four_way_handshake &&
11110 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11111 goto free_msg;
11112 if (wakeup->rfkill_release &&
11113 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11114 goto free_msg;
11115
11116 if (wakeup->pattern_idx >= 0 &&
11117 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11118 wakeup->pattern_idx))
11119 goto free_msg;
11120
11121 if (wakeup->tcp_match)
11122 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11123
11124 if (wakeup->tcp_connlost)
11125 nla_put_flag(msg,
11126 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11127
11128 if (wakeup->tcp_nomoretokens)
11129 nla_put_flag(msg,
11130 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11131
11132 if (wakeup->packet) {
11133 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11134 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11135
11136 if (!wakeup->packet_80211) {
11137 pkt_attr =
11138 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11139 len_attr =
11140 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11141 }
11142
11143 if (wakeup->packet_len &&
11144 nla_put_u32(msg, len_attr, wakeup->packet_len))
11145 goto free_msg;
11146
11147 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11148 wakeup->packet))
11149 goto free_msg;
11150 }
11151
11152 nla_nest_end(msg, reasons);
11153 }
11154
11155 genlmsg_end(msg, hdr);
11156
11157 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11158 nl80211_mlme_mcgrp.id, gfp);
11159 return;
11160
11161 free_msg:
11162 nlmsg_free(msg);
11163 }
11164 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11165 #endif
11166
11167 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11168 enum nl80211_tdls_operation oper,
11169 u16 reason_code, gfp_t gfp)
11170 {
11171 struct wireless_dev *wdev = dev->ieee80211_ptr;
11172 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11173 struct sk_buff *msg;
11174 void *hdr;
11175
11176 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11177 reason_code);
11178
11179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11180 if (!msg)
11181 return;
11182
11183 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11184 if (!hdr) {
11185 nlmsg_free(msg);
11186 return;
11187 }
11188
11189 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11190 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11191 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11192 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11193 (reason_code > 0 &&
11194 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11195 goto nla_put_failure;
11196
11197 genlmsg_end(msg, hdr);
11198
11199 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11200 nl80211_mlme_mcgrp.id, gfp);
11201 return;
11202
11203 nla_put_failure:
11204 genlmsg_cancel(msg, hdr);
11205 nlmsg_free(msg);
11206 }
11207 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11208
11209 static int nl80211_netlink_notify(struct notifier_block * nb,
11210 unsigned long state,
11211 void *_notify)
11212 {
11213 struct netlink_notify *notify = _notify;
11214 struct cfg80211_registered_device *rdev;
11215 struct wireless_dev *wdev;
11216 struct cfg80211_beacon_registration *reg, *tmp;
11217
11218 if (state != NETLINK_URELEASE)
11219 return NOTIFY_DONE;
11220
11221 rcu_read_lock();
11222
11223 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11224 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11225 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11226
11227 spin_lock_bh(&rdev->beacon_registrations_lock);
11228 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11229 list) {
11230 if (reg->nlportid == notify->portid) {
11231 list_del(&reg->list);
11232 kfree(reg);
11233 break;
11234 }
11235 }
11236 spin_unlock_bh(&rdev->beacon_registrations_lock);
11237 }
11238
11239 rcu_read_unlock();
11240
11241 return NOTIFY_DONE;
11242 }
11243
11244 static struct notifier_block nl80211_netlink_notifier = {
11245 .notifier_call = nl80211_netlink_notify,
11246 };
11247
11248 void cfg80211_ft_event(struct net_device *netdev,
11249 struct cfg80211_ft_event_params *ft_event)
11250 {
11251 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11252 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11253 struct sk_buff *msg;
11254 void *hdr;
11255
11256 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11257
11258 if (!ft_event->target_ap)
11259 return;
11260
11261 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11262 if (!msg)
11263 return;
11264
11265 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11266 if (!hdr) {
11267 nlmsg_free(msg);
11268 return;
11269 }
11270
11271 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11272 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11273 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11274 if (ft_event->ies)
11275 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11276 if (ft_event->ric_ies)
11277 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11278 ft_event->ric_ies);
11279
11280 genlmsg_end(msg, hdr);
11281
11282 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11283 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11284 }
11285 EXPORT_SYMBOL(cfg80211_ft_event);
11286
11287 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11288 {
11289 struct cfg80211_registered_device *rdev;
11290 struct sk_buff *msg;
11291 void *hdr;
11292 u32 nlportid;
11293
11294 rdev = wiphy_to_dev(wdev->wiphy);
11295 if (!rdev->crit_proto_nlportid)
11296 return;
11297
11298 nlportid = rdev->crit_proto_nlportid;
11299 rdev->crit_proto_nlportid = 0;
11300
11301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11302 if (!msg)
11303 return;
11304
11305 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11306 if (!hdr)
11307 goto nla_put_failure;
11308
11309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11310 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11311 goto nla_put_failure;
11312
11313 genlmsg_end(msg, hdr);
11314
11315 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11316 return;
11317
11318 nla_put_failure:
11319 if (hdr)
11320 genlmsg_cancel(msg, hdr);
11321 nlmsg_free(msg);
11322
11323 }
11324 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11325
11326 /* initialisation/exit functions */
11327
11328 int nl80211_init(void)
11329 {
11330 int err;
11331
11332 err = genl_register_family_with_ops(&nl80211_fam,
11333 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11334 if (err)
11335 return err;
11336
11337 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11338 if (err)
11339 goto err_out;
11340
11341 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11342 if (err)
11343 goto err_out;
11344
11345 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11346 if (err)
11347 goto err_out;
11348
11349 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11350 if (err)
11351 goto err_out;
11352
11353 #ifdef CONFIG_NL80211_TESTMODE
11354 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11355 if (err)
11356 goto err_out;
11357 #endif
11358
11359 err = netlink_register_notifier(&nl80211_netlink_notifier);
11360 if (err)
11361 goto err_out;
11362
11363 return 0;
11364 err_out:
11365 genl_unregister_family(&nl80211_fam);
11366 return err;
11367 }
11368
11369 void nl80211_exit(void)
11370 {
11371 netlink_unregister_notifier(&nl80211_netlink_notifier);
11372 genl_unregister_family(&nl80211_fam);
11373 }
Linux kernel - Deliverables
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