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Merge remote-tracking branch 'remotes/powerpc/topic/xive' into kvm-ppc-next
[linux/fpc-iii.git] / net / wireless / nl80211.c
blobd7f8be4e321a32eba3a615aa69a860c212511625
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2017 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 /* the netlink family */
36 static struct genl_family nl80211_fam;
37
38 /* multicast groups */
39 enum nl80211_multicast_groups {
40 NL80211_MCGRP_CONFIG,
41 NL80211_MCGRP_SCAN,
42 NL80211_MCGRP_REGULATORY,
43 NL80211_MCGRP_MLME,
44 NL80211_MCGRP_VENDOR,
45 NL80211_MCGRP_NAN,
46 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
47 };
48
49 static const struct genl_multicast_group nl80211_mcgrps[] = {
50 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
51 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
52 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
53 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
54 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
55 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
56 #ifdef CONFIG_NL80211_TESTMODE
57 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
58 #endif
59 };
60
61 /* returns ERR_PTR values */
62 static struct wireless_dev *
63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
64 {
65 struct cfg80211_registered_device *rdev;
66 struct wireless_dev *result = NULL;
67 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
68 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
69 u64 wdev_id;
70 int wiphy_idx = -1;
71 int ifidx = -1;
72
73 ASSERT_RTNL();
74
75 if (!have_ifidx && !have_wdev_id)
76 return ERR_PTR(-EINVAL);
77
78 if (have_ifidx)
79 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
80 if (have_wdev_id) {
81 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
82 wiphy_idx = wdev_id >> 32;
83 }
84
85 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
86 struct wireless_dev *wdev;
87
88 if (wiphy_net(&rdev->wiphy) != netns)
89 continue;
90
91 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
92 continue;
93
94 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
95 if (have_ifidx && wdev->netdev &&
96 wdev->netdev->ifindex == ifidx) {
97 result = wdev;
98 break;
99 }
100 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
101 result = wdev;
102 break;
103 }
104 }
105
106 if (result)
107 break;
108 }
109
110 if (result)
111 return result;
112 return ERR_PTR(-ENODEV);
113 }
114
115 static struct cfg80211_registered_device *
116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
117 {
118 struct cfg80211_registered_device *rdev = NULL, *tmp;
119 struct net_device *netdev;
120
121 ASSERT_RTNL();
122
123 if (!attrs[NL80211_ATTR_WIPHY] &&
124 !attrs[NL80211_ATTR_IFINDEX] &&
125 !attrs[NL80211_ATTR_WDEV])
126 return ERR_PTR(-EINVAL);
127
128 if (attrs[NL80211_ATTR_WIPHY])
129 rdev = cfg80211_rdev_by_wiphy_idx(
130 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
131
132 if (attrs[NL80211_ATTR_WDEV]) {
133 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
134 struct wireless_dev *wdev;
135 bool found = false;
136
137 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
138 if (tmp) {
139 /* make sure wdev exists */
140 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
141 if (wdev->identifier != (u32)wdev_id)
142 continue;
143 found = true;
144 break;
145 }
146
147 if (!found)
148 tmp = NULL;
149
150 if (rdev && tmp != rdev)
151 return ERR_PTR(-EINVAL);
152 rdev = tmp;
153 }
154 }
155
156 if (attrs[NL80211_ATTR_IFINDEX]) {
157 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
158
159 netdev = __dev_get_by_index(netns, ifindex);
160 if (netdev) {
161 if (netdev->ieee80211_ptr)
162 tmp = wiphy_to_rdev(
163 netdev->ieee80211_ptr->wiphy);
164 else
165 tmp = NULL;
166
167 /* not wireless device -- return error */
168 if (!tmp)
169 return ERR_PTR(-EINVAL);
170
171 /* mismatch -- return error */
172 if (rdev && tmp != rdev)
173 return ERR_PTR(-EINVAL);
174
175 rdev = tmp;
176 }
177 }
178
179 if (!rdev)
180 return ERR_PTR(-ENODEV);
181
182 if (netns != wiphy_net(&rdev->wiphy))
183 return ERR_PTR(-ENODEV);
184
185 return rdev;
186 }
187
188 /*
189 * This function returns a pointer to the driver
190 * that the genl_info item that is passed refers to.
191 *
192 * The result of this can be a PTR_ERR and hence must
193 * be checked with IS_ERR() for errors.
194 */
195 static struct cfg80211_registered_device *
196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
197 {
198 return __cfg80211_rdev_from_attrs(netns, info->attrs);
199 }
200
201 /* policy for the attributes */
202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
203 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
204 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
205 .len = 20-1 },
206 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
207
208 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
209 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
210 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
211 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
212 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
213
214 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
215 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
216 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
217 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
219 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
220
221 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
222 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
223 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
224
225 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
226 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
227
228 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
229 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
230 .len = WLAN_MAX_KEY_LEN },
231 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
232 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
233 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
234 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
235 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
236
237 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
238 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
239 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
240 .len = IEEE80211_MAX_DATA_LEN },
241 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
242 .len = IEEE80211_MAX_DATA_LEN },
243 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
244 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
245 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
246 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
247 .len = NL80211_MAX_SUPP_RATES },
248 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
249 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
250 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
251 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_MESH_ID_LEN },
253 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
254
255 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
256 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
257
258 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
259 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
260 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
262 .len = NL80211_MAX_SUPP_RATES },
263 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
264
265 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
266 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
267
268 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
269
270 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
271 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
272 .len = IEEE80211_MAX_DATA_LEN },
273 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
275
276 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
277 .len = IEEE80211_MAX_SSID_LEN },
278 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
279 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
280 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
281 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
282 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
283 [NL80211_ATTR_STA_FLAGS2] = {
284 .len = sizeof(struct nl80211_sta_flag_update),
285 },
286 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
287 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
288 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
289 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
290 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
291 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
292 [NL80211_ATTR_PID] = { .type = NLA_U32 },
293 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
294 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
295 .len = WLAN_PMKID_LEN },
296 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
297 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
298 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
299 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
300 .len = IEEE80211_MAX_DATA_LEN },
301 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
302 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
303 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
304 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
305 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
306 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
307 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
308 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
309 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
310 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
311 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
312 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
313 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
314 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
315 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
317 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
318 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
319 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
320 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
321 .len = IEEE80211_MAX_DATA_LEN },
322 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
325 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
326 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
327 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
328 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
329 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
331 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
332 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
333 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
334 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
337 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
338 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
339 .len = NL80211_HT_CAPABILITY_LEN
340 },
341 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
342 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
343 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
344 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
345 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
346 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
347 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
348 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
349 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
350 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
351 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
352 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
353 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
354 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
355 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
356 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
357 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
358 .len = NL80211_VHT_CAPABILITY_LEN,
359 },
360 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
361 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
362 .len = IEEE80211_MAX_DATA_LEN },
363 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
364 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
365 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
366 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
367 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
368 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
369 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
370 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
371 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
372 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
373 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
374 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
375 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
376 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
377 .len = IEEE80211_QOS_MAP_LEN_MAX },
378 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
379 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
380 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
381 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
382 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
383 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
384 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
385 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
386 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
387 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
388 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
390 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
391 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
392 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
393 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
394 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
395 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
396 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
397 .len = VHT_MUMIMO_GROUPS_DATA_LEN
398 },
399 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
400 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
401 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
402 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
403 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
404 .len = FILS_MAX_KEK_LEN },
405 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
406 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
407 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
408 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
409 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
410 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
411 },
412 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
413 };
414
415 /* policy for the key attributes */
416 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
417 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
418 [NL80211_KEY_IDX] = { .type = NLA_U8 },
419 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
420 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
421 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
422 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
423 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
424 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
425 };
426
427 /* policy for the key default flags */
428 static const struct nla_policy
429 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
430 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
431 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
432 };
433
434 #ifdef CONFIG_PM
435 /* policy for WoWLAN attributes */
436 static const struct nla_policy
437 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
438 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
440 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
441 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
442 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
443 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
444 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
445 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
446 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
447 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
448 };
449
450 static const struct nla_policy
451 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
452 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
453 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
454 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
455 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
456 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
457 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
458 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
459 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
460 },
461 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
462 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
463 },
464 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
465 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
466 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
467 };
468 #endif /* CONFIG_PM */
469
470 /* policy for coalesce rule attributes */
471 static const struct nla_policy
472 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
473 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
474 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
475 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
476 };
477
478 /* policy for GTK rekey offload attributes */
479 static const struct nla_policy
480 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
481 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
482 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
483 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
484 };
485
486 static const struct nla_policy
487 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
488 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
489 .len = IEEE80211_MAX_SSID_LEN },
490 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
491 };
492
493 static const struct nla_policy
494 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
495 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
496 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
497 };
498
499 static const struct nla_policy
500 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
501 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
502 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
503 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
504 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
505 },
506 };
507
508 /* policy for NAN function attributes */
509 static const struct nla_policy
510 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
511 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
512 [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
513 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
514 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
515 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
516 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
517 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
518 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
519 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
520 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
521 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
522 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
523 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
524 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
525 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
526 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
527 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
528 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
529 };
530
531 /* policy for Service Response Filter attributes */
532 static const struct nla_policy
533 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
534 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
535 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
536 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
537 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
538 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
539 };
540
541 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
542 struct netlink_callback *cb,
543 struct cfg80211_registered_device **rdev,
544 struct wireless_dev **wdev)
545 {
546 int err;
547
548 rtnl_lock();
549
550 if (!cb->args[0]) {
551 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
552 genl_family_attrbuf(&nl80211_fam),
553 nl80211_fam.maxattr, nl80211_policy);
554 if (err)
555 goto out_unlock;
556
557 *wdev = __cfg80211_wdev_from_attrs(
558 sock_net(skb->sk),
559 genl_family_attrbuf(&nl80211_fam));
560 if (IS_ERR(*wdev)) {
561 err = PTR_ERR(*wdev);
562 goto out_unlock;
563 }
564 *rdev = wiphy_to_rdev((*wdev)->wiphy);
565 /* 0 is the first index - add 1 to parse only once */
566 cb->args[0] = (*rdev)->wiphy_idx + 1;
567 cb->args[1] = (*wdev)->identifier;
568 } else {
569 /* subtract the 1 again here */
570 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
571 struct wireless_dev *tmp;
572
573 if (!wiphy) {
574 err = -ENODEV;
575 goto out_unlock;
576 }
577 *rdev = wiphy_to_rdev(wiphy);
578 *wdev = NULL;
579
580 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
581 if (tmp->identifier == cb->args[1]) {
582 *wdev = tmp;
583 break;
584 }
585 }
586
587 if (!*wdev) {
588 err = -ENODEV;
589 goto out_unlock;
590 }
591 }
592
593 return 0;
594 out_unlock:
595 rtnl_unlock();
596 return err;
597 }
598
599 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
600 {
601 rtnl_unlock();
602 }
603
604 /* IE validation */
605 static bool is_valid_ie_attr(const struct nlattr *attr)
606 {
607 const u8 *pos;
608 int len;
609
610 if (!attr)
611 return true;
612
613 pos = nla_data(attr);
614 len = nla_len(attr);
615
616 while (len) {
617 u8 elemlen;
618
619 if (len < 2)
620 return false;
621 len -= 2;
622
623 elemlen = pos[1];
624 if (elemlen > len)
625 return false;
626
627 len -= elemlen;
628 pos += 2 + elemlen;
629 }
630
631 return true;
632 }
633
634 /* message building helper */
635 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
636 int flags, u8 cmd)
637 {
638 /* since there is no private header just add the generic one */
639 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
640 }
641
642 static int nl80211_msg_put_channel(struct sk_buff *msg,
643 struct ieee80211_channel *chan,
644 bool large)
645 {
646 /* Some channels must be completely excluded from the
647 * list to protect old user-space tools from breaking
648 */
649 if (!large && chan->flags &
650 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
651 return 0;
652
653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
654 chan->center_freq))
655 goto nla_put_failure;
656
657 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
658 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
659 goto nla_put_failure;
660 if (chan->flags & IEEE80211_CHAN_NO_IR) {
661 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
662 goto nla_put_failure;
663 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
664 goto nla_put_failure;
665 }
666 if (chan->flags & IEEE80211_CHAN_RADAR) {
667 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
668 goto nla_put_failure;
669 if (large) {
670 u32 time;
671
672 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
673
674 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
675 chan->dfs_state))
676 goto nla_put_failure;
677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
678 time))
679 goto nla_put_failure;
680 if (nla_put_u32(msg,
681 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
682 chan->dfs_cac_ms))
683 goto nla_put_failure;
684 }
685 }
686
687 if (large) {
688 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
689 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
690 goto nla_put_failure;
691 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
692 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
693 goto nla_put_failure;
694 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
695 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
696 goto nla_put_failure;
697 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
698 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
699 goto nla_put_failure;
700 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
701 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
702 goto nla_put_failure;
703 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
704 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
705 goto nla_put_failure;
706 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
707 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
708 goto nla_put_failure;
709 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
710 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
711 goto nla_put_failure;
712 }
713
714 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
715 DBM_TO_MBM(chan->max_power)))
716 goto nla_put_failure;
717
718 return 0;
719
720 nla_put_failure:
721 return -ENOBUFS;
722 }
723
724 /* netlink command implementations */
725
726 struct key_parse {
727 struct key_params p;
728 int idx;
729 int type;
730 bool def, defmgmt;
731 bool def_uni, def_multi;
732 };
733
734 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
735 {
736 struct nlattr *tb[NL80211_KEY_MAX + 1];
737 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
738 nl80211_key_policy);
739 if (err)
740 return err;
741
742 k->def = !!tb[NL80211_KEY_DEFAULT];
743 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
744
745 if (k->def) {
746 k->def_uni = true;
747 k->def_multi = true;
748 }
749 if (k->defmgmt)
750 k->def_multi = true;
751
752 if (tb[NL80211_KEY_IDX])
753 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
754
755 if (tb[NL80211_KEY_DATA]) {
756 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
757 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
758 }
759
760 if (tb[NL80211_KEY_SEQ]) {
761 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
762 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
763 }
764
765 if (tb[NL80211_KEY_CIPHER])
766 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
767
768 if (tb[NL80211_KEY_TYPE]) {
769 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
770 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
771 return -EINVAL;
772 }
773
774 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
775 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
776
777 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
778 tb[NL80211_KEY_DEFAULT_TYPES],
779 nl80211_key_default_policy);
780 if (err)
781 return err;
782
783 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
784 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
785 }
786
787 return 0;
788 }
789
790 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
791 {
792 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
793 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
794 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
795 }
796
797 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
798 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
799 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
800 }
801
802 if (info->attrs[NL80211_ATTR_KEY_IDX])
803 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
804
805 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
806 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
807
808 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
809 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
810
811 if (k->def) {
812 k->def_uni = true;
813 k->def_multi = true;
814 }
815 if (k->defmgmt)
816 k->def_multi = true;
817
818 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
819 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
820 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
821 return -EINVAL;
822 }
823
824 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
825 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
826 int err = nla_parse_nested(
827 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
828 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
829 nl80211_key_default_policy);
830 if (err)
831 return err;
832
833 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
834 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
835 }
836
837 return 0;
838 }
839
840 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
841 {
842 int err;
843
844 memset(k, 0, sizeof(*k));
845 k->idx = -1;
846 k->type = -1;
847
848 if (info->attrs[NL80211_ATTR_KEY])
849 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
850 else
851 err = nl80211_parse_key_old(info, k);
852
853 if (err)
854 return err;
855
856 if (k->def && k->defmgmt)
857 return -EINVAL;
858
859 if (k->defmgmt) {
860 if (k->def_uni || !k->def_multi)
861 return -EINVAL;
862 }
863
864 if (k->idx != -1) {
865 if (k->defmgmt) {
866 if (k->idx < 4 || k->idx > 5)
867 return -EINVAL;
868 } else if (k->def) {
869 if (k->idx < 0 || k->idx > 3)
870 return -EINVAL;
871 } else {
872 if (k->idx < 0 || k->idx > 5)
873 return -EINVAL;
874 }
875 }
876
877 return 0;
878 }
879
880 static struct cfg80211_cached_keys *
881 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
882 struct nlattr *keys, bool *no_ht)
883 {
884 struct key_parse parse;
885 struct nlattr *key;
886 struct cfg80211_cached_keys *result;
887 int rem, err, def = 0;
888 bool have_key = false;
889
890 nla_for_each_nested(key, keys, rem) {
891 have_key = true;
892 break;
893 }
894
895 if (!have_key)
896 return NULL;
897
898 result = kzalloc(sizeof(*result), GFP_KERNEL);
899 if (!result)
900 return ERR_PTR(-ENOMEM);
901
902 result->def = -1;
903
904 nla_for_each_nested(key, keys, rem) {
905 memset(&parse, 0, sizeof(parse));
906 parse.idx = -1;
907
908 err = nl80211_parse_key_new(key, &parse);
909 if (err)
910 goto error;
911 err = -EINVAL;
912 if (!parse.p.key)
913 goto error;
914 if (parse.idx < 0 || parse.idx > 3)
915 goto error;
916 if (parse.def) {
917 if (def)
918 goto error;
919 def = 1;
920 result->def = parse.idx;
921 if (!parse.def_uni || !parse.def_multi)
922 goto error;
923 } else if (parse.defmgmt)
924 goto error;
925 err = cfg80211_validate_key_settings(rdev, &parse.p,
926 parse.idx, false, NULL);
927 if (err)
928 goto error;
929 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
930 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
931 err = -EINVAL;
932 goto error;
933 }
934 result->params[parse.idx].cipher = parse.p.cipher;
935 result->params[parse.idx].key_len = parse.p.key_len;
936 result->params[parse.idx].key = result->data[parse.idx];
937 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
938
939 /* must be WEP key if we got here */
940 if (no_ht)
941 *no_ht = true;
942 }
943
944 if (result->def < 0) {
945 err = -EINVAL;
946 goto error;
947 }
948
949 return result;
950 error:
951 kfree(result);
952 return ERR_PTR(err);
953 }
954
955 static int nl80211_key_allowed(struct wireless_dev *wdev)
956 {
957 ASSERT_WDEV_LOCK(wdev);
958
959 switch (wdev->iftype) {
960 case NL80211_IFTYPE_AP:
961 case NL80211_IFTYPE_AP_VLAN:
962 case NL80211_IFTYPE_P2P_GO:
963 case NL80211_IFTYPE_MESH_POINT:
964 break;
965 case NL80211_IFTYPE_ADHOC:
966 case NL80211_IFTYPE_STATION:
967 case NL80211_IFTYPE_P2P_CLIENT:
968 if (!wdev->current_bss)
969 return -ENOLINK;
970 break;
971 case NL80211_IFTYPE_UNSPECIFIED:
972 case NL80211_IFTYPE_OCB:
973 case NL80211_IFTYPE_MONITOR:
974 case NL80211_IFTYPE_NAN:
975 case NL80211_IFTYPE_P2P_DEVICE:
976 case NL80211_IFTYPE_WDS:
977 case NUM_NL80211_IFTYPES:
978 return -EINVAL;
979 }
980
981 return 0;
982 }
983
984 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
985 struct nlattr *tb)
986 {
987 struct ieee80211_channel *chan;
988
989 if (tb == NULL)
990 return NULL;
991 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
992 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
993 return NULL;
994 return chan;
995 }
996
997 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
998 {
999 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1000 int i;
1001
1002 if (!nl_modes)
1003 goto nla_put_failure;
1004
1005 i = 0;
1006 while (ifmodes) {
1007 if ((ifmodes & 1) && nla_put_flag(msg, i))
1008 goto nla_put_failure;
1009 ifmodes >>= 1;
1010 i++;
1011 }
1012
1013 nla_nest_end(msg, nl_modes);
1014 return 0;
1015
1016 nla_put_failure:
1017 return -ENOBUFS;
1018 }
1019
1020 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1021 struct sk_buff *msg,
1022 bool large)
1023 {
1024 struct nlattr *nl_combis;
1025 int i, j;
1026
1027 nl_combis = nla_nest_start(msg,
1028 NL80211_ATTR_INTERFACE_COMBINATIONS);
1029 if (!nl_combis)
1030 goto nla_put_failure;
1031
1032 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1033 const struct ieee80211_iface_combination *c;
1034 struct nlattr *nl_combi, *nl_limits;
1035
1036 c = &wiphy->iface_combinations[i];
1037
1038 nl_combi = nla_nest_start(msg, i + 1);
1039 if (!nl_combi)
1040 goto nla_put_failure;
1041
1042 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1043 if (!nl_limits)
1044 goto nla_put_failure;
1045
1046 for (j = 0; j < c->n_limits; j++) {
1047 struct nlattr *nl_limit;
1048
1049 nl_limit = nla_nest_start(msg, j + 1);
1050 if (!nl_limit)
1051 goto nla_put_failure;
1052 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1053 c->limits[j].max))
1054 goto nla_put_failure;
1055 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1056 c->limits[j].types))
1057 goto nla_put_failure;
1058 nla_nest_end(msg, nl_limit);
1059 }
1060
1061 nla_nest_end(msg, nl_limits);
1062
1063 if (c->beacon_int_infra_match &&
1064 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1065 goto nla_put_failure;
1066 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1067 c->num_different_channels) ||
1068 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1069 c->max_interfaces))
1070 goto nla_put_failure;
1071 if (large &&
1072 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1073 c->radar_detect_widths) ||
1074 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1075 c->radar_detect_regions)))
1076 goto nla_put_failure;
1077 if (c->beacon_int_min_gcd &&
1078 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1079 c->beacon_int_min_gcd))
1080 goto nla_put_failure;
1081
1082 nla_nest_end(msg, nl_combi);
1083 }
1084
1085 nla_nest_end(msg, nl_combis);
1086
1087 return 0;
1088 nla_put_failure:
1089 return -ENOBUFS;
1090 }
1091
1092 #ifdef CONFIG_PM
1093 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1094 struct sk_buff *msg)
1095 {
1096 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1097 struct nlattr *nl_tcp;
1098
1099 if (!tcp)
1100 return 0;
1101
1102 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1103 if (!nl_tcp)
1104 return -ENOBUFS;
1105
1106 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1107 tcp->data_payload_max))
1108 return -ENOBUFS;
1109
1110 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1111 tcp->data_payload_max))
1112 return -ENOBUFS;
1113
1114 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1115 return -ENOBUFS;
1116
1117 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1118 sizeof(*tcp->tok), tcp->tok))
1119 return -ENOBUFS;
1120
1121 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1122 tcp->data_interval_max))
1123 return -ENOBUFS;
1124
1125 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1126 tcp->wake_payload_max))
1127 return -ENOBUFS;
1128
1129 nla_nest_end(msg, nl_tcp);
1130 return 0;
1131 }
1132
1133 static int nl80211_send_wowlan(struct sk_buff *msg,
1134 struct cfg80211_registered_device *rdev,
1135 bool large)
1136 {
1137 struct nlattr *nl_wowlan;
1138
1139 if (!rdev->wiphy.wowlan)
1140 return 0;
1141
1142 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1143 if (!nl_wowlan)
1144 return -ENOBUFS;
1145
1146 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1147 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1148 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1149 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1150 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1152 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1154 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1156 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1157 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1158 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1159 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1160 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1161 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1162 return -ENOBUFS;
1163
1164 if (rdev->wiphy.wowlan->n_patterns) {
1165 struct nl80211_pattern_support pat = {
1166 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1167 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1168 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1169 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1170 };
1171
1172 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1173 sizeof(pat), &pat))
1174 return -ENOBUFS;
1175 }
1176
1177 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1178 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1179 rdev->wiphy.wowlan->max_nd_match_sets))
1180 return -ENOBUFS;
1181
1182 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1183 return -ENOBUFS;
1184
1185 nla_nest_end(msg, nl_wowlan);
1186
1187 return 0;
1188 }
1189 #endif
1190
1191 static int nl80211_send_coalesce(struct sk_buff *msg,
1192 struct cfg80211_registered_device *rdev)
1193 {
1194 struct nl80211_coalesce_rule_support rule;
1195
1196 if (!rdev->wiphy.coalesce)
1197 return 0;
1198
1199 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1200 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1201 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1202 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1203 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1204 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1205
1206 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1207 return -ENOBUFS;
1208
1209 return 0;
1210 }
1211
1212 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1213 struct ieee80211_supported_band *sband)
1214 {
1215 struct nlattr *nl_rates, *nl_rate;
1216 struct ieee80211_rate *rate;
1217 int i;
1218
1219 /* add HT info */
1220 if (sband->ht_cap.ht_supported &&
1221 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1222 sizeof(sband->ht_cap.mcs),
1223 &sband->ht_cap.mcs) ||
1224 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1225 sband->ht_cap.cap) ||
1226 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1227 sband->ht_cap.ampdu_factor) ||
1228 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1229 sband->ht_cap.ampdu_density)))
1230 return -ENOBUFS;
1231
1232 /* add VHT info */
1233 if (sband->vht_cap.vht_supported &&
1234 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1235 sizeof(sband->vht_cap.vht_mcs),
1236 &sband->vht_cap.vht_mcs) ||
1237 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1238 sband->vht_cap.cap)))
1239 return -ENOBUFS;
1240
1241 /* add bitrates */
1242 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1243 if (!nl_rates)
1244 return -ENOBUFS;
1245
1246 for (i = 0; i < sband->n_bitrates; i++) {
1247 nl_rate = nla_nest_start(msg, i);
1248 if (!nl_rate)
1249 return -ENOBUFS;
1250
1251 rate = &sband->bitrates[i];
1252 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1253 rate->bitrate))
1254 return -ENOBUFS;
1255 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1256 nla_put_flag(msg,
1257 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1258 return -ENOBUFS;
1259
1260 nla_nest_end(msg, nl_rate);
1261 }
1262
1263 nla_nest_end(msg, nl_rates);
1264
1265 return 0;
1266 }
1267
1268 static int
1269 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1270 const struct ieee80211_txrx_stypes *mgmt_stypes)
1271 {
1272 u16 stypes;
1273 struct nlattr *nl_ftypes, *nl_ifs;
1274 enum nl80211_iftype ift;
1275 int i;
1276
1277 if (!mgmt_stypes)
1278 return 0;
1279
1280 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1281 if (!nl_ifs)
1282 return -ENOBUFS;
1283
1284 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1285 nl_ftypes = nla_nest_start(msg, ift);
1286 if (!nl_ftypes)
1287 return -ENOBUFS;
1288 i = 0;
1289 stypes = mgmt_stypes[ift].tx;
1290 while (stypes) {
1291 if ((stypes & 1) &&
1292 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1293 (i << 4) | IEEE80211_FTYPE_MGMT))
1294 return -ENOBUFS;
1295 stypes >>= 1;
1296 i++;
1297 }
1298 nla_nest_end(msg, nl_ftypes);
1299 }
1300
1301 nla_nest_end(msg, nl_ifs);
1302
1303 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1304 if (!nl_ifs)
1305 return -ENOBUFS;
1306
1307 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1308 nl_ftypes = nla_nest_start(msg, ift);
1309 if (!nl_ftypes)
1310 return -ENOBUFS;
1311 i = 0;
1312 stypes = mgmt_stypes[ift].rx;
1313 while (stypes) {
1314 if ((stypes & 1) &&
1315 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1316 (i << 4) | IEEE80211_FTYPE_MGMT))
1317 return -ENOBUFS;
1318 stypes >>= 1;
1319 i++;
1320 }
1321 nla_nest_end(msg, nl_ftypes);
1322 }
1323 nla_nest_end(msg, nl_ifs);
1324
1325 return 0;
1326 }
1327
1328 #define CMD(op, n) \
1329 do { \
1330 if (rdev->ops->op) { \
1331 i++; \
1332 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1333 goto nla_put_failure; \
1334 } \
1335 } while (0)
1336
1337 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1338 struct sk_buff *msg)
1339 {
1340 int i = 0;
1341
1342 /*
1343 * do *NOT* add anything into this function, new things need to be
1344 * advertised only to new versions of userspace that can deal with
1345 * the split (and they can't possibly care about new features...
1346 */
1347 CMD(add_virtual_intf, NEW_INTERFACE);
1348 CMD(change_virtual_intf, SET_INTERFACE);
1349 CMD(add_key, NEW_KEY);
1350 CMD(start_ap, START_AP);
1351 CMD(add_station, NEW_STATION);
1352 CMD(add_mpath, NEW_MPATH);
1353 CMD(update_mesh_config, SET_MESH_CONFIG);
1354 CMD(change_bss, SET_BSS);
1355 CMD(auth, AUTHENTICATE);
1356 CMD(assoc, ASSOCIATE);
1357 CMD(deauth, DEAUTHENTICATE);
1358 CMD(disassoc, DISASSOCIATE);
1359 CMD(join_ibss, JOIN_IBSS);
1360 CMD(join_mesh, JOIN_MESH);
1361 CMD(set_pmksa, SET_PMKSA);
1362 CMD(del_pmksa, DEL_PMKSA);
1363 CMD(flush_pmksa, FLUSH_PMKSA);
1364 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1365 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1366 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1367 CMD(mgmt_tx, FRAME);
1368 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1369 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1370 i++;
1371 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1372 goto nla_put_failure;
1373 }
1374 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1375 rdev->ops->join_mesh) {
1376 i++;
1377 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1378 goto nla_put_failure;
1379 }
1380 CMD(set_wds_peer, SET_WDS_PEER);
1381 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1382 CMD(tdls_mgmt, TDLS_MGMT);
1383 CMD(tdls_oper, TDLS_OPER);
1384 }
1385 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1386 CMD(sched_scan_start, START_SCHED_SCAN);
1387 CMD(probe_client, PROBE_CLIENT);
1388 CMD(set_noack_map, SET_NOACK_MAP);
1389 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1390 i++;
1391 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1392 goto nla_put_failure;
1393 }
1394 CMD(start_p2p_device, START_P2P_DEVICE);
1395 CMD(set_mcast_rate, SET_MCAST_RATE);
1396 #ifdef CONFIG_NL80211_TESTMODE
1397 CMD(testmode_cmd, TESTMODE);
1398 #endif
1399
1400 if (rdev->ops->connect || rdev->ops->auth) {
1401 i++;
1402 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1403 goto nla_put_failure;
1404 }
1405
1406 if (rdev->ops->disconnect || rdev->ops->deauth) {
1407 i++;
1408 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1409 goto nla_put_failure;
1410 }
1411
1412 return i;
1413 nla_put_failure:
1414 return -ENOBUFS;
1415 }
1416
1417 struct nl80211_dump_wiphy_state {
1418 s64 filter_wiphy;
1419 long start;
1420 long split_start, band_start, chan_start, capa_start;
1421 bool split;
1422 };
1423
1424 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1425 enum nl80211_commands cmd,
1426 struct sk_buff *msg, u32 portid, u32 seq,
1427 int flags, struct nl80211_dump_wiphy_state *state)
1428 {
1429 void *hdr;
1430 struct nlattr *nl_bands, *nl_band;
1431 struct nlattr *nl_freqs, *nl_freq;
1432 struct nlattr *nl_cmds;
1433 enum nl80211_band band;
1434 struct ieee80211_channel *chan;
1435 int i;
1436 const struct ieee80211_txrx_stypes *mgmt_stypes =
1437 rdev->wiphy.mgmt_stypes;
1438 u32 features;
1439
1440 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1441 if (!hdr)
1442 return -ENOBUFS;
1443
1444 if (WARN_ON(!state))
1445 return -EINVAL;
1446
1447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1448 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1449 wiphy_name(&rdev->wiphy)) ||
1450 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1451 cfg80211_rdev_list_generation))
1452 goto nla_put_failure;
1453
1454 if (cmd != NL80211_CMD_NEW_WIPHY)
1455 goto finish;
1456
1457 switch (state->split_start) {
1458 case 0:
1459 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1460 rdev->wiphy.retry_short) ||
1461 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1462 rdev->wiphy.retry_long) ||
1463 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1464 rdev->wiphy.frag_threshold) ||
1465 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1466 rdev->wiphy.rts_threshold) ||
1467 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1468 rdev->wiphy.coverage_class) ||
1469 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1470 rdev->wiphy.max_scan_ssids) ||
1471 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1472 rdev->wiphy.max_sched_scan_ssids) ||
1473 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1474 rdev->wiphy.max_scan_ie_len) ||
1475 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1476 rdev->wiphy.max_sched_scan_ie_len) ||
1477 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1478 rdev->wiphy.max_match_sets) ||
1479 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1480 rdev->wiphy.max_sched_scan_plans) ||
1481 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1482 rdev->wiphy.max_sched_scan_plan_interval) ||
1483 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1484 rdev->wiphy.max_sched_scan_plan_iterations))
1485 goto nla_put_failure;
1486
1487 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1488 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1489 goto nla_put_failure;
1490 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1491 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1492 goto nla_put_failure;
1493 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1494 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1495 goto nla_put_failure;
1496 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1497 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1498 goto nla_put_failure;
1499 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1500 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1501 goto nla_put_failure;
1502 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1503 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1504 goto nla_put_failure;
1505 state->split_start++;
1506 if (state->split)
1507 break;
1508 case 1:
1509 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1510 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1511 rdev->wiphy.cipher_suites))
1512 goto nla_put_failure;
1513
1514 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1515 rdev->wiphy.max_num_pmkids))
1516 goto nla_put_failure;
1517
1518 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1519 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1520 goto nla_put_failure;
1521
1522 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1523 rdev->wiphy.available_antennas_tx) ||
1524 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1525 rdev->wiphy.available_antennas_rx))
1526 goto nla_put_failure;
1527
1528 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1529 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1530 rdev->wiphy.probe_resp_offload))
1531 goto nla_put_failure;
1532
1533 if ((rdev->wiphy.available_antennas_tx ||
1534 rdev->wiphy.available_antennas_rx) &&
1535 rdev->ops->get_antenna) {
1536 u32 tx_ant = 0, rx_ant = 0;
1537 int res;
1538
1539 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1540 if (!res) {
1541 if (nla_put_u32(msg,
1542 NL80211_ATTR_WIPHY_ANTENNA_TX,
1543 tx_ant) ||
1544 nla_put_u32(msg,
1545 NL80211_ATTR_WIPHY_ANTENNA_RX,
1546 rx_ant))
1547 goto nla_put_failure;
1548 }
1549 }
1550
1551 state->split_start++;
1552 if (state->split)
1553 break;
1554 case 2:
1555 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1556 rdev->wiphy.interface_modes))
1557 goto nla_put_failure;
1558 state->split_start++;
1559 if (state->split)
1560 break;
1561 case 3:
1562 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1563 if (!nl_bands)
1564 goto nla_put_failure;
1565
1566 for (band = state->band_start;
1567 band < NUM_NL80211_BANDS; band++) {
1568 struct ieee80211_supported_band *sband;
1569
1570 sband = rdev->wiphy.bands[band];
1571
1572 if (!sband)
1573 continue;
1574
1575 nl_band = nla_nest_start(msg, band);
1576 if (!nl_band)
1577 goto nla_put_failure;
1578
1579 switch (state->chan_start) {
1580 case 0:
1581 if (nl80211_send_band_rateinfo(msg, sband))
1582 goto nla_put_failure;
1583 state->chan_start++;
1584 if (state->split)
1585 break;
1586 default:
1587 /* add frequencies */
1588 nl_freqs = nla_nest_start(
1589 msg, NL80211_BAND_ATTR_FREQS);
1590 if (!nl_freqs)
1591 goto nla_put_failure;
1592
1593 for (i = state->chan_start - 1;
1594 i < sband->n_channels;
1595 i++) {
1596 nl_freq = nla_nest_start(msg, i);
1597 if (!nl_freq)
1598 goto nla_put_failure;
1599
1600 chan = &sband->channels[i];
1601
1602 if (nl80211_msg_put_channel(
1603 msg, chan,
1604 state->split))
1605 goto nla_put_failure;
1606
1607 nla_nest_end(msg, nl_freq);
1608 if (state->split)
1609 break;
1610 }
1611 if (i < sband->n_channels)
1612 state->chan_start = i + 2;
1613 else
1614 state->chan_start = 0;
1615 nla_nest_end(msg, nl_freqs);
1616 }
1617
1618 nla_nest_end(msg, nl_band);
1619
1620 if (state->split) {
1621 /* start again here */
1622 if (state->chan_start)
1623 band--;
1624 break;
1625 }
1626 }
1627 nla_nest_end(msg, nl_bands);
1628
1629 if (band < NUM_NL80211_BANDS)
1630 state->band_start = band + 1;
1631 else
1632 state->band_start = 0;
1633
1634 /* if bands & channels are done, continue outside */
1635 if (state->band_start == 0 && state->chan_start == 0)
1636 state->split_start++;
1637 if (state->split)
1638 break;
1639 case 4:
1640 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1641 if (!nl_cmds)
1642 goto nla_put_failure;
1643
1644 i = nl80211_add_commands_unsplit(rdev, msg);
1645 if (i < 0)
1646 goto nla_put_failure;
1647 if (state->split) {
1648 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1649 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1650 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1651 CMD(channel_switch, CHANNEL_SWITCH);
1652 CMD(set_qos_map, SET_QOS_MAP);
1653 if (rdev->wiphy.features &
1654 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1655 CMD(add_tx_ts, ADD_TX_TS);
1656 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1657 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1658 }
1659 #undef CMD
1660
1661 nla_nest_end(msg, nl_cmds);
1662 state->split_start++;
1663 if (state->split)
1664 break;
1665 case 5:
1666 if (rdev->ops->remain_on_channel &&
1667 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1668 nla_put_u32(msg,
1669 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1670 rdev->wiphy.max_remain_on_channel_duration))
1671 goto nla_put_failure;
1672
1673 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1674 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1675 goto nla_put_failure;
1676
1677 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1678 goto nla_put_failure;
1679 state->split_start++;
1680 if (state->split)
1681 break;
1682 case 6:
1683 #ifdef CONFIG_PM
1684 if (nl80211_send_wowlan(msg, rdev, state->split))
1685 goto nla_put_failure;
1686 state->split_start++;
1687 if (state->split)
1688 break;
1689 #else
1690 state->split_start++;
1691 #endif
1692 case 7:
1693 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1694 rdev->wiphy.software_iftypes))
1695 goto nla_put_failure;
1696
1697 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1698 state->split))
1699 goto nla_put_failure;
1700
1701 state->split_start++;
1702 if (state->split)
1703 break;
1704 case 8:
1705 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1706 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1707 rdev->wiphy.ap_sme_capa))
1708 goto nla_put_failure;
1709
1710 features = rdev->wiphy.features;
1711 /*
1712 * We can only add the per-channel limit information if the
1713 * dump is split, otherwise it makes it too big. Therefore
1714 * only advertise it in that case.
1715 */
1716 if (state->split)
1717 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1718 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1719 goto nla_put_failure;
1720
1721 if (rdev->wiphy.ht_capa_mod_mask &&
1722 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1723 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1724 rdev->wiphy.ht_capa_mod_mask))
1725 goto nla_put_failure;
1726
1727 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1728 rdev->wiphy.max_acl_mac_addrs &&
1729 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1730 rdev->wiphy.max_acl_mac_addrs))
1731 goto nla_put_failure;
1732
1733 /*
1734 * Any information below this point is only available to
1735 * applications that can deal with it being split. This
1736 * helps ensure that newly added capabilities don't break
1737 * older tools by overrunning their buffers.
1738 *
1739 * We still increment split_start so that in the split
1740 * case we'll continue with more data in the next round,
1741 * but break unconditionally so unsplit data stops here.
1742 */
1743 state->split_start++;
1744 break;
1745 case 9:
1746 if (rdev->wiphy.extended_capabilities &&
1747 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1748 rdev->wiphy.extended_capabilities_len,
1749 rdev->wiphy.extended_capabilities) ||
1750 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1751 rdev->wiphy.extended_capabilities_len,
1752 rdev->wiphy.extended_capabilities_mask)))
1753 goto nla_put_failure;
1754
1755 if (rdev->wiphy.vht_capa_mod_mask &&
1756 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1757 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1758 rdev->wiphy.vht_capa_mod_mask))
1759 goto nla_put_failure;
1760
1761 state->split_start++;
1762 break;
1763 case 10:
1764 if (nl80211_send_coalesce(msg, rdev))
1765 goto nla_put_failure;
1766
1767 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1768 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1769 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1770 goto nla_put_failure;
1771
1772 if (rdev->wiphy.max_ap_assoc_sta &&
1773 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1774 rdev->wiphy.max_ap_assoc_sta))
1775 goto nla_put_failure;
1776
1777 state->split_start++;
1778 break;
1779 case 11:
1780 if (rdev->wiphy.n_vendor_commands) {
1781 const struct nl80211_vendor_cmd_info *info;
1782 struct nlattr *nested;
1783
1784 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1785 if (!nested)
1786 goto nla_put_failure;
1787
1788 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1789 info = &rdev->wiphy.vendor_commands[i].info;
1790 if (nla_put(msg, i + 1, sizeof(*info), info))
1791 goto nla_put_failure;
1792 }
1793 nla_nest_end(msg, nested);
1794 }
1795
1796 if (rdev->wiphy.n_vendor_events) {
1797 const struct nl80211_vendor_cmd_info *info;
1798 struct nlattr *nested;
1799
1800 nested = nla_nest_start(msg,
1801 NL80211_ATTR_VENDOR_EVENTS);
1802 if (!nested)
1803 goto nla_put_failure;
1804
1805 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1806 info = &rdev->wiphy.vendor_events[i];
1807 if (nla_put(msg, i + 1, sizeof(*info), info))
1808 goto nla_put_failure;
1809 }
1810 nla_nest_end(msg, nested);
1811 }
1812 state->split_start++;
1813 break;
1814 case 12:
1815 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1816 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1817 rdev->wiphy.max_num_csa_counters))
1818 goto nla_put_failure;
1819
1820 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1821 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1822 goto nla_put_failure;
1823
1824 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1825 sizeof(rdev->wiphy.ext_features),
1826 rdev->wiphy.ext_features))
1827 goto nla_put_failure;
1828
1829 if (rdev->wiphy.bss_select_support) {
1830 struct nlattr *nested;
1831 u32 bss_select_support = rdev->wiphy.bss_select_support;
1832
1833 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1834 if (!nested)
1835 goto nla_put_failure;
1836
1837 i = 0;
1838 while (bss_select_support) {
1839 if ((bss_select_support & 1) &&
1840 nla_put_flag(msg, i))
1841 goto nla_put_failure;
1842 i++;
1843 bss_select_support >>= 1;
1844 }
1845 nla_nest_end(msg, nested);
1846 }
1847
1848 state->split_start++;
1849 break;
1850 case 13:
1851 if (rdev->wiphy.num_iftype_ext_capab &&
1852 rdev->wiphy.iftype_ext_capab) {
1853 struct nlattr *nested_ext_capab, *nested;
1854
1855 nested = nla_nest_start(msg,
1856 NL80211_ATTR_IFTYPE_EXT_CAPA);
1857 if (!nested)
1858 goto nla_put_failure;
1859
1860 for (i = state->capa_start;
1861 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1862 const struct wiphy_iftype_ext_capab *capab;
1863
1864 capab = &rdev->wiphy.iftype_ext_capab[i];
1865
1866 nested_ext_capab = nla_nest_start(msg, i);
1867 if (!nested_ext_capab ||
1868 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1869 capab->iftype) ||
1870 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1871 capab->extended_capabilities_len,
1872 capab->extended_capabilities) ||
1873 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1874 capab->extended_capabilities_len,
1875 capab->extended_capabilities_mask))
1876 goto nla_put_failure;
1877
1878 nla_nest_end(msg, nested_ext_capab);
1879 if (state->split)
1880 break;
1881 }
1882 nla_nest_end(msg, nested);
1883 if (i < rdev->wiphy.num_iftype_ext_capab) {
1884 state->capa_start = i + 1;
1885 break;
1886 }
1887 }
1888
1889 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1890 rdev->wiphy.nan_supported_bands))
1891 goto nla_put_failure;
1892
1893 /* done */
1894 state->split_start = 0;
1895 break;
1896 }
1897 finish:
1898 genlmsg_end(msg, hdr);
1899 return 0;
1900
1901 nla_put_failure:
1902 genlmsg_cancel(msg, hdr);
1903 return -EMSGSIZE;
1904 }
1905
1906 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1907 struct netlink_callback *cb,
1908 struct nl80211_dump_wiphy_state *state)
1909 {
1910 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1911 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1912 tb, nl80211_fam.maxattr, nl80211_policy);
1913 /* ignore parse errors for backward compatibility */
1914 if (ret)
1915 return 0;
1916
1917 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1918 if (tb[NL80211_ATTR_WIPHY])
1919 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1920 if (tb[NL80211_ATTR_WDEV])
1921 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1922 if (tb[NL80211_ATTR_IFINDEX]) {
1923 struct net_device *netdev;
1924 struct cfg80211_registered_device *rdev;
1925 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1926
1927 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1928 if (!netdev)
1929 return -ENODEV;
1930 if (netdev->ieee80211_ptr) {
1931 rdev = wiphy_to_rdev(
1932 netdev->ieee80211_ptr->wiphy);
1933 state->filter_wiphy = rdev->wiphy_idx;
1934 }
1935 }
1936
1937 return 0;
1938 }
1939
1940 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1941 {
1942 int idx = 0, ret;
1943 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1944 struct cfg80211_registered_device *rdev;
1945
1946 rtnl_lock();
1947 if (!state) {
1948 state = kzalloc(sizeof(*state), GFP_KERNEL);
1949 if (!state) {
1950 rtnl_unlock();
1951 return -ENOMEM;
1952 }
1953 state->filter_wiphy = -1;
1954 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1955 if (ret) {
1956 kfree(state);
1957 rtnl_unlock();
1958 return ret;
1959 }
1960 cb->args[0] = (long)state;
1961 }
1962
1963 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1964 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1965 continue;
1966 if (++idx <= state->start)
1967 continue;
1968 if (state->filter_wiphy != -1 &&
1969 state->filter_wiphy != rdev->wiphy_idx)
1970 continue;
1971 /* attempt to fit multiple wiphy data chunks into the skb */
1972 do {
1973 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1974 skb,
1975 NETLINK_CB(cb->skb).portid,
1976 cb->nlh->nlmsg_seq,
1977 NLM_F_MULTI, state);
1978 if (ret < 0) {
1979 /*
1980 * If sending the wiphy data didn't fit (ENOBUFS
1981 * or EMSGSIZE returned), this SKB is still
1982 * empty (so it's not too big because another
1983 * wiphy dataset is already in the skb) and
1984 * we've not tried to adjust the dump allocation
1985 * yet ... then adjust the alloc size to be
1986 * bigger, and return 1 but with the empty skb.
1987 * This results in an empty message being RX'ed
1988 * in userspace, but that is ignored.
1989 *
1990 * We can then retry with the larger buffer.
1991 */
1992 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1993 !skb->len && !state->split &&
1994 cb->min_dump_alloc < 4096) {
1995 cb->min_dump_alloc = 4096;
1996 state->split_start = 0;
1997 rtnl_unlock();
1998 return 1;
1999 }
2000 idx--;
2001 break;
2002 }
2003 } while (state->split_start > 0);
2004 break;
2005 }
2006 rtnl_unlock();
2007
2008 state->start = idx;
2009
2010 return skb->len;
2011 }
2012
2013 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2014 {
2015 kfree((void *)cb->args[0]);
2016 return 0;
2017 }
2018
2019 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2020 {
2021 struct sk_buff *msg;
2022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2023 struct nl80211_dump_wiphy_state state = {};
2024
2025 msg = nlmsg_new(4096, GFP_KERNEL);
2026 if (!msg)
2027 return -ENOMEM;
2028
2029 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2030 info->snd_portid, info->snd_seq, 0,
2031 &state) < 0) {
2032 nlmsg_free(msg);
2033 return -ENOBUFS;
2034 }
2035
2036 return genlmsg_reply(msg, info);
2037 }
2038
2039 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2040 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2041 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2042 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2043 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2044 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2045 };
2046
2047 static int parse_txq_params(struct nlattr *tb[],
2048 struct ieee80211_txq_params *txq_params)
2049 {
2050 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2051 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2052 !tb[NL80211_TXQ_ATTR_AIFS])
2053 return -EINVAL;
2054
2055 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2056 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2057 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2058 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2059 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2060
2061 if (txq_params->ac >= NL80211_NUM_ACS)
2062 return -EINVAL;
2063
2064 return 0;
2065 }
2066
2067 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2068 {
2069 /*
2070 * You can only set the channel explicitly for WDS interfaces,
2071 * all others have their channel managed via their respective
2072 * "establish a connection" command (connect, join, ...)
2073 *
2074 * For AP/GO and mesh mode, the channel can be set with the
2075 * channel userspace API, but is only stored and passed to the
2076 * low-level driver when the AP starts or the mesh is joined.
2077 * This is for backward compatibility, userspace can also give
2078 * the channel in the start-ap or join-mesh commands instead.
2079 *
2080 * Monitors are special as they are normally slaved to
2081 * whatever else is going on, so they have their own special
2082 * operation to set the monitor channel if possible.
2083 */
2084 return !wdev ||
2085 wdev->iftype == NL80211_IFTYPE_AP ||
2086 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2087 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2088 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2089 }
2090
2091 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2092 struct genl_info *info,
2093 struct cfg80211_chan_def *chandef)
2094 {
2095 u32 control_freq;
2096
2097 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2098 return -EINVAL;
2099
2100 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2101
2102 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2103 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2104 chandef->center_freq1 = control_freq;
2105 chandef->center_freq2 = 0;
2106
2107 /* Primary channel not allowed */
2108 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2109 return -EINVAL;
2110
2111 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2112 enum nl80211_channel_type chantype;
2113
2114 chantype = nla_get_u32(
2115 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2116
2117 switch (chantype) {
2118 case NL80211_CHAN_NO_HT:
2119 case NL80211_CHAN_HT20:
2120 case NL80211_CHAN_HT40PLUS:
2121 case NL80211_CHAN_HT40MINUS:
2122 cfg80211_chandef_create(chandef, chandef->chan,
2123 chantype);
2124 break;
2125 default:
2126 return -EINVAL;
2127 }
2128 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2129 chandef->width =
2130 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2131 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2132 chandef->center_freq1 =
2133 nla_get_u32(
2134 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2135 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2136 chandef->center_freq2 =
2137 nla_get_u32(
2138 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2139 }
2140
2141 if (!cfg80211_chandef_valid(chandef))
2142 return -EINVAL;
2143
2144 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2145 IEEE80211_CHAN_DISABLED))
2146 return -EINVAL;
2147
2148 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2149 chandef->width == NL80211_CHAN_WIDTH_10) &&
2150 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2151 return -EINVAL;
2152
2153 return 0;
2154 }
2155
2156 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2157 struct net_device *dev,
2158 struct genl_info *info)
2159 {
2160 struct cfg80211_chan_def chandef;
2161 int result;
2162 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2163 struct wireless_dev *wdev = NULL;
2164
2165 if (dev)
2166 wdev = dev->ieee80211_ptr;
2167 if (!nl80211_can_set_dev_channel(wdev))
2168 return -EOPNOTSUPP;
2169 if (wdev)
2170 iftype = wdev->iftype;
2171
2172 result = nl80211_parse_chandef(rdev, info, &chandef);
2173 if (result)
2174 return result;
2175
2176 switch (iftype) {
2177 case NL80211_IFTYPE_AP:
2178 case NL80211_IFTYPE_P2P_GO:
2179 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2180 iftype)) {
2181 result = -EINVAL;
2182 break;
2183 }
2184 if (wdev->beacon_interval) {
2185 if (!dev || !rdev->ops->set_ap_chanwidth ||
2186 !(rdev->wiphy.features &
2187 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2188 result = -EBUSY;
2189 break;
2190 }
2191
2192 /* Only allow dynamic channel width changes */
2193 if (chandef.chan != wdev->preset_chandef.chan) {
2194 result = -EBUSY;
2195 break;
2196 }
2197 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2198 if (result)
2199 break;
2200 }
2201 wdev->preset_chandef = chandef;
2202 result = 0;
2203 break;
2204 case NL80211_IFTYPE_MESH_POINT:
2205 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2206 break;
2207 case NL80211_IFTYPE_MONITOR:
2208 result = cfg80211_set_monitor_channel(rdev, &chandef);
2209 break;
2210 default:
2211 result = -EINVAL;
2212 }
2213
2214 return result;
2215 }
2216
2217 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2218 {
2219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2220 struct net_device *netdev = info->user_ptr[1];
2221
2222 return __nl80211_set_channel(rdev, netdev, info);
2223 }
2224
2225 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2226 {
2227 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2228 struct net_device *dev = info->user_ptr[1];
2229 struct wireless_dev *wdev = dev->ieee80211_ptr;
2230 const u8 *bssid;
2231
2232 if (!info->attrs[NL80211_ATTR_MAC])
2233 return -EINVAL;
2234
2235 if (netif_running(dev))
2236 return -EBUSY;
2237
2238 if (!rdev->ops->set_wds_peer)
2239 return -EOPNOTSUPP;
2240
2241 if (wdev->iftype != NL80211_IFTYPE_WDS)
2242 return -EOPNOTSUPP;
2243
2244 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2245 return rdev_set_wds_peer(rdev, dev, bssid);
2246 }
2247
2248 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2249 {
2250 struct cfg80211_registered_device *rdev;
2251 struct net_device *netdev = NULL;
2252 struct wireless_dev *wdev;
2253 int result = 0, rem_txq_params = 0;
2254 struct nlattr *nl_txq_params;
2255 u32 changed;
2256 u8 retry_short = 0, retry_long = 0;
2257 u32 frag_threshold = 0, rts_threshold = 0;
2258 u8 coverage_class = 0;
2259
2260 ASSERT_RTNL();
2261
2262 /*
2263 * Try to find the wiphy and netdev. Normally this
2264 * function shouldn't need the netdev, but this is
2265 * done for backward compatibility -- previously
2266 * setting the channel was done per wiphy, but now
2267 * it is per netdev. Previous userland like hostapd
2268 * also passed a netdev to set_wiphy, so that it is
2269 * possible to let that go to the right netdev!
2270 */
2271
2272 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2273 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2274
2275 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2276 if (netdev && netdev->ieee80211_ptr)
2277 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2278 else
2279 netdev = NULL;
2280 }
2281
2282 if (!netdev) {
2283 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2284 info->attrs);
2285 if (IS_ERR(rdev))
2286 return PTR_ERR(rdev);
2287 wdev = NULL;
2288 netdev = NULL;
2289 result = 0;
2290 } else
2291 wdev = netdev->ieee80211_ptr;
2292
2293 /*
2294 * end workaround code, by now the rdev is available
2295 * and locked, and wdev may or may not be NULL.
2296 */
2297
2298 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2299 result = cfg80211_dev_rename(
2300 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2301
2302 if (result)
2303 return result;
2304
2305 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2306 struct ieee80211_txq_params txq_params;
2307 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2308
2309 if (!rdev->ops->set_txq_params)
2310 return -EOPNOTSUPP;
2311
2312 if (!netdev)
2313 return -EINVAL;
2314
2315 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2316 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2317 return -EINVAL;
2318
2319 if (!netif_running(netdev))
2320 return -ENETDOWN;
2321
2322 nla_for_each_nested(nl_txq_params,
2323 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2324 rem_txq_params) {
2325 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2326 nl_txq_params,
2327 txq_params_policy);
2328 if (result)
2329 return result;
2330 result = parse_txq_params(tb, &txq_params);
2331 if (result)
2332 return result;
2333
2334 result = rdev_set_txq_params(rdev, netdev,
2335 &txq_params);
2336 if (result)
2337 return result;
2338 }
2339 }
2340
2341 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2342 result = __nl80211_set_channel(
2343 rdev,
2344 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2345 info);
2346 if (result)
2347 return result;
2348 }
2349
2350 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2351 struct wireless_dev *txp_wdev = wdev;
2352 enum nl80211_tx_power_setting type;
2353 int idx, mbm = 0;
2354
2355 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2356 txp_wdev = NULL;
2357
2358 if (!rdev->ops->set_tx_power)
2359 return -EOPNOTSUPP;
2360
2361 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2362 type = nla_get_u32(info->attrs[idx]);
2363
2364 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2365 (type != NL80211_TX_POWER_AUTOMATIC))
2366 return -EINVAL;
2367
2368 if (type != NL80211_TX_POWER_AUTOMATIC) {
2369 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2370 mbm = nla_get_u32(info->attrs[idx]);
2371 }
2372
2373 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2374 if (result)
2375 return result;
2376 }
2377
2378 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2379 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2380 u32 tx_ant, rx_ant;
2381
2382 if ((!rdev->wiphy.available_antennas_tx &&
2383 !rdev->wiphy.available_antennas_rx) ||
2384 !rdev->ops->set_antenna)
2385 return -EOPNOTSUPP;
2386
2387 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2388 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2389
2390 /* reject antenna configurations which don't match the
2391 * available antenna masks, except for the "all" mask */
2392 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2393 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2394 return -EINVAL;
2395
2396 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2397 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2398
2399 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2400 if (result)
2401 return result;
2402 }
2403
2404 changed = 0;
2405
2406 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2407 retry_short = nla_get_u8(
2408 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2409 if (retry_short == 0)
2410 return -EINVAL;
2411
2412 changed |= WIPHY_PARAM_RETRY_SHORT;
2413 }
2414
2415 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2416 retry_long = nla_get_u8(
2417 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2418 if (retry_long == 0)
2419 return -EINVAL;
2420
2421 changed |= WIPHY_PARAM_RETRY_LONG;
2422 }
2423
2424 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2425 frag_threshold = nla_get_u32(
2426 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2427 if (frag_threshold < 256)
2428 return -EINVAL;
2429
2430 if (frag_threshold != (u32) -1) {
2431 /*
2432 * Fragments (apart from the last one) are required to
2433 * have even length. Make the fragmentation code
2434 * simpler by stripping LSB should someone try to use
2435 * odd threshold value.
2436 */
2437 frag_threshold &= ~0x1;
2438 }
2439 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2440 }
2441
2442 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2443 rts_threshold = nla_get_u32(
2444 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2445 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2446 }
2447
2448 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2449 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2450 return -EINVAL;
2451
2452 coverage_class = nla_get_u8(
2453 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2454 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2455 }
2456
2457 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2458 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2459 return -EOPNOTSUPP;
2460
2461 changed |= WIPHY_PARAM_DYN_ACK;
2462 }
2463
2464 if (changed) {
2465 u8 old_retry_short, old_retry_long;
2466 u32 old_frag_threshold, old_rts_threshold;
2467 u8 old_coverage_class;
2468
2469 if (!rdev->ops->set_wiphy_params)
2470 return -EOPNOTSUPP;
2471
2472 old_retry_short = rdev->wiphy.retry_short;
2473 old_retry_long = rdev->wiphy.retry_long;
2474 old_frag_threshold = rdev->wiphy.frag_threshold;
2475 old_rts_threshold = rdev->wiphy.rts_threshold;
2476 old_coverage_class = rdev->wiphy.coverage_class;
2477
2478 if (changed & WIPHY_PARAM_RETRY_SHORT)
2479 rdev->wiphy.retry_short = retry_short;
2480 if (changed & WIPHY_PARAM_RETRY_LONG)
2481 rdev->wiphy.retry_long = retry_long;
2482 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2483 rdev->wiphy.frag_threshold = frag_threshold;
2484 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2485 rdev->wiphy.rts_threshold = rts_threshold;
2486 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2487 rdev->wiphy.coverage_class = coverage_class;
2488
2489 result = rdev_set_wiphy_params(rdev, changed);
2490 if (result) {
2491 rdev->wiphy.retry_short = old_retry_short;
2492 rdev->wiphy.retry_long = old_retry_long;
2493 rdev->wiphy.frag_threshold = old_frag_threshold;
2494 rdev->wiphy.rts_threshold = old_rts_threshold;
2495 rdev->wiphy.coverage_class = old_coverage_class;
2496 return result;
2497 }
2498 }
2499 return 0;
2500 }
2501
2502 static inline u64 wdev_id(struct wireless_dev *wdev)
2503 {
2504 return (u64)wdev->identifier |
2505 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2506 }
2507
2508 static int nl80211_send_chandef(struct sk_buff *msg,
2509 const struct cfg80211_chan_def *chandef)
2510 {
2511 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2512 return -EINVAL;
2513
2514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2515 chandef->chan->center_freq))
2516 return -ENOBUFS;
2517 switch (chandef->width) {
2518 case NL80211_CHAN_WIDTH_20_NOHT:
2519 case NL80211_CHAN_WIDTH_20:
2520 case NL80211_CHAN_WIDTH_40:
2521 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2522 cfg80211_get_chandef_type(chandef)))
2523 return -ENOBUFS;
2524 break;
2525 default:
2526 break;
2527 }
2528 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2529 return -ENOBUFS;
2530 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2531 return -ENOBUFS;
2532 if (chandef->center_freq2 &&
2533 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2534 return -ENOBUFS;
2535 return 0;
2536 }
2537
2538 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2539 struct cfg80211_registered_device *rdev,
2540 struct wireless_dev *wdev, bool removal)
2541 {
2542 struct net_device *dev = wdev->netdev;
2543 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2544 void *hdr;
2545
2546 if (removal)
2547 cmd = NL80211_CMD_DEL_INTERFACE;
2548
2549 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2550 if (!hdr)
2551 return -1;
2552
2553 if (dev &&
2554 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2555 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2556 goto nla_put_failure;
2557
2558 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2559 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2560 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2561 NL80211_ATTR_PAD) ||
2562 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2563 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2564 rdev->devlist_generation ^
2565 (cfg80211_rdev_list_generation << 2)))
2566 goto nla_put_failure;
2567
2568 if (rdev->ops->get_channel) {
2569 int ret;
2570 struct cfg80211_chan_def chandef;
2571
2572 ret = rdev_get_channel(rdev, wdev, &chandef);
2573 if (ret == 0) {
2574 if (nl80211_send_chandef(msg, &chandef))
2575 goto nla_put_failure;
2576 }
2577 }
2578
2579 if (rdev->ops->get_tx_power) {
2580 int dbm, ret;
2581
2582 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2583 if (ret == 0 &&
2584 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2585 DBM_TO_MBM(dbm)))
2586 goto nla_put_failure;
2587 }
2588
2589 if (wdev->ssid_len) {
2590 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2591 goto nla_put_failure;
2592 }
2593
2594 genlmsg_end(msg, hdr);
2595 return 0;
2596
2597 nla_put_failure:
2598 genlmsg_cancel(msg, hdr);
2599 return -EMSGSIZE;
2600 }
2601
2602 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2603 {
2604 int wp_idx = 0;
2605 int if_idx = 0;
2606 int wp_start = cb->args[0];
2607 int if_start = cb->args[1];
2608 int filter_wiphy = -1;
2609 struct cfg80211_registered_device *rdev;
2610 struct wireless_dev *wdev;
2611
2612 rtnl_lock();
2613 if (!cb->args[2]) {
2614 struct nl80211_dump_wiphy_state state = {
2615 .filter_wiphy = -1,
2616 };
2617 int ret;
2618
2619 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2620 if (ret)
2621 return ret;
2622
2623 filter_wiphy = state.filter_wiphy;
2624
2625 /*
2626 * if filtering, set cb->args[2] to +1 since 0 is the default
2627 * value needed to determine that parsing is necessary.
2628 */
2629 if (filter_wiphy >= 0)
2630 cb->args[2] = filter_wiphy + 1;
2631 else
2632 cb->args[2] = -1;
2633 } else if (cb->args[2] > 0) {
2634 filter_wiphy = cb->args[2] - 1;
2635 }
2636
2637 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2638 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2639 continue;
2640 if (wp_idx < wp_start) {
2641 wp_idx++;
2642 continue;
2643 }
2644
2645 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2646 continue;
2647
2648 if_idx = 0;
2649
2650 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2651 if (if_idx < if_start) {
2652 if_idx++;
2653 continue;
2654 }
2655 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2656 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2657 rdev, wdev, false) < 0) {
2658 goto out;
2659 }
2660 if_idx++;
2661 }
2662
2663 wp_idx++;
2664 }
2665 out:
2666 rtnl_unlock();
2667
2668 cb->args[0] = wp_idx;
2669 cb->args[1] = if_idx;
2670
2671 return skb->len;
2672 }
2673
2674 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2675 {
2676 struct sk_buff *msg;
2677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2678 struct wireless_dev *wdev = info->user_ptr[1];
2679
2680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2681 if (!msg)
2682 return -ENOMEM;
2683
2684 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2685 rdev, wdev, false) < 0) {
2686 nlmsg_free(msg);
2687 return -ENOBUFS;
2688 }
2689
2690 return genlmsg_reply(msg, info);
2691 }
2692
2693 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2694 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2695 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2696 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2697 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2698 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2699 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2700 };
2701
2702 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2703 {
2704 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2705 int flag;
2706
2707 *mntrflags = 0;
2708
2709 if (!nla)
2710 return -EINVAL;
2711
2712 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2713 nla, mntr_flags_policy))
2714 return -EINVAL;
2715
2716 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2717 if (flags[flag])
2718 *mntrflags |= (1<<flag);
2719
2720 return 0;
2721 }
2722
2723 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2724 struct net_device *netdev, u8 use_4addr,
2725 enum nl80211_iftype iftype)
2726 {
2727 if (!use_4addr) {
2728 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2729 return -EBUSY;
2730 return 0;
2731 }
2732
2733 switch (iftype) {
2734 case NL80211_IFTYPE_AP_VLAN:
2735 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2736 return 0;
2737 break;
2738 case NL80211_IFTYPE_STATION:
2739 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2740 return 0;
2741 break;
2742 default:
2743 break;
2744 }
2745
2746 return -EOPNOTSUPP;
2747 }
2748
2749 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2750 {
2751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2752 struct vif_params params;
2753 int err;
2754 enum nl80211_iftype otype, ntype;
2755 struct net_device *dev = info->user_ptr[1];
2756 u32 _flags, *flags = NULL;
2757 bool change = false;
2758
2759 memset(&params, 0, sizeof(params));
2760
2761 otype = ntype = dev->ieee80211_ptr->iftype;
2762
2763 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2764 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2765 if (otype != ntype)
2766 change = true;
2767 if (ntype > NL80211_IFTYPE_MAX)
2768 return -EINVAL;
2769 }
2770
2771 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2772 struct wireless_dev *wdev = dev->ieee80211_ptr;
2773
2774 if (ntype != NL80211_IFTYPE_MESH_POINT)
2775 return -EINVAL;
2776 if (netif_running(dev))
2777 return -EBUSY;
2778
2779 wdev_lock(wdev);
2780 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2781 IEEE80211_MAX_MESH_ID_LEN);
2782 wdev->mesh_id_up_len =
2783 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2784 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2785 wdev->mesh_id_up_len);
2786 wdev_unlock(wdev);
2787 }
2788
2789 if (info->attrs[NL80211_ATTR_4ADDR]) {
2790 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2791 change = true;
2792 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2793 if (err)
2794 return err;
2795 } else {
2796 params.use_4addr = -1;
2797 }
2798
2799 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2800 if (ntype != NL80211_IFTYPE_MONITOR)
2801 return -EINVAL;
2802 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2803 &_flags);
2804 if (err)
2805 return err;
2806
2807 flags = &_flags;
2808 change = true;
2809 }
2810
2811 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2812 const u8 *mumimo_groups;
2813 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2814
2815 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2816 return -EOPNOTSUPP;
2817
2818 mumimo_groups =
2819 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2820
2821 /* bits 0 and 63 are reserved and must be zero */
2822 if ((mumimo_groups[0] & BIT(7)) ||
2823 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2824 return -EINVAL;
2825
2826 memcpy(params.vht_mumimo_groups, mumimo_groups,
2827 VHT_MUMIMO_GROUPS_DATA_LEN);
2828 change = true;
2829 }
2830
2831 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2832 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2833
2834 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2835 return -EOPNOTSUPP;
2836
2837 nla_memcpy(params.macaddr,
2838 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2839 ETH_ALEN);
2840 change = true;
2841 }
2842
2843 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2844 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2845 return -EOPNOTSUPP;
2846
2847 if (change)
2848 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2849 else
2850 err = 0;
2851
2852 if (!err && params.use_4addr != -1)
2853 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2854
2855 return err;
2856 }
2857
2858 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2859 {
2860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2861 struct vif_params params;
2862 struct wireless_dev *wdev;
2863 struct sk_buff *msg;
2864 int err;
2865 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2866 u32 flags;
2867
2868 /* to avoid failing a new interface creation due to pending removal */
2869 cfg80211_destroy_ifaces(rdev);
2870
2871 memset(&params, 0, sizeof(params));
2872
2873 if (!info->attrs[NL80211_ATTR_IFNAME])
2874 return -EINVAL;
2875
2876 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2877 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2878 if (type > NL80211_IFTYPE_MAX)
2879 return -EINVAL;
2880 }
2881
2882 if (!rdev->ops->add_virtual_intf ||
2883 !(rdev->wiphy.interface_modes & (1 << type)))
2884 return -EOPNOTSUPP;
2885
2886 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2887 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2888 info->attrs[NL80211_ATTR_MAC]) {
2889 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2890 ETH_ALEN);
2891 if (!is_valid_ether_addr(params.macaddr))
2892 return -EADDRNOTAVAIL;
2893 }
2894
2895 if (info->attrs[NL80211_ATTR_4ADDR]) {
2896 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2897 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2898 if (err)
2899 return err;
2900 }
2901
2902 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2903 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2904 &flags);
2905
2906 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2907 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2908 return -EOPNOTSUPP;
2909
2910 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2911 if (!msg)
2912 return -ENOMEM;
2913
2914 wdev = rdev_add_virtual_intf(rdev,
2915 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2916 NET_NAME_USER, type, err ? NULL : &flags,
2917 &params);
2918 if (WARN_ON(!wdev)) {
2919 nlmsg_free(msg);
2920 return -EPROTO;
2921 } else if (IS_ERR(wdev)) {
2922 nlmsg_free(msg);
2923 return PTR_ERR(wdev);
2924 }
2925
2926 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2927 wdev->owner_nlportid = info->snd_portid;
2928
2929 switch (type) {
2930 case NL80211_IFTYPE_MESH_POINT:
2931 if (!info->attrs[NL80211_ATTR_MESH_ID])
2932 break;
2933 wdev_lock(wdev);
2934 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2935 IEEE80211_MAX_MESH_ID_LEN);
2936 wdev->mesh_id_up_len =
2937 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2938 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2939 wdev->mesh_id_up_len);
2940 wdev_unlock(wdev);
2941 break;
2942 case NL80211_IFTYPE_NAN:
2943 case NL80211_IFTYPE_P2P_DEVICE:
2944 /*
2945 * P2P Device and NAN do not have a netdev, so don't go
2946 * through the netdev notifier and must be added here
2947 */
2948 mutex_init(&wdev->mtx);
2949 INIT_LIST_HEAD(&wdev->event_list);
2950 spin_lock_init(&wdev->event_lock);
2951 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2952 spin_lock_init(&wdev->mgmt_registrations_lock);
2953
2954 wdev->identifier = ++rdev->wdev_id;
2955 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2956 rdev->devlist_generation++;
2957 break;
2958 default:
2959 break;
2960 }
2961
2962 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2963 rdev, wdev, false) < 0) {
2964 nlmsg_free(msg);
2965 return -ENOBUFS;
2966 }
2967
2968 /*
2969 * For wdevs which have no associated netdev object (e.g. of type
2970 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2971 * For all other types, the event will be generated from the
2972 * netdev notifier
2973 */
2974 if (!wdev->netdev)
2975 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2976
2977 return genlmsg_reply(msg, info);
2978 }
2979
2980 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2981 {
2982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2983 struct wireless_dev *wdev = info->user_ptr[1];
2984
2985 if (!rdev->ops->del_virtual_intf)
2986 return -EOPNOTSUPP;
2987
2988 /*
2989 * If we remove a wireless device without a netdev then clear
2990 * user_ptr[1] so that nl80211_post_doit won't dereference it
2991 * to check if it needs to do dev_put(). Otherwise it crashes
2992 * since the wdev has been freed, unlike with a netdev where
2993 * we need the dev_put() for the netdev to really be freed.
2994 */
2995 if (!wdev->netdev)
2996 info->user_ptr[1] = NULL;
2997
2998 return rdev_del_virtual_intf(rdev, wdev);
2999 }
3000
3001 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3002 {
3003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3004 struct net_device *dev = info->user_ptr[1];
3005 u16 noack_map;
3006
3007 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3008 return -EINVAL;
3009
3010 if (!rdev->ops->set_noack_map)
3011 return -EOPNOTSUPP;
3012
3013 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3014
3015 return rdev_set_noack_map(rdev, dev, noack_map);
3016 }
3017
3018 struct get_key_cookie {
3019 struct sk_buff *msg;
3020 int error;
3021 int idx;
3022 };
3023
3024 static void get_key_callback(void *c, struct key_params *params)
3025 {
3026 struct nlattr *key;
3027 struct get_key_cookie *cookie = c;
3028
3029 if ((params->key &&
3030 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3031 params->key_len, params->key)) ||
3032 (params->seq &&
3033 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3034 params->seq_len, params->seq)) ||
3035 (params->cipher &&
3036 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3037 params->cipher)))
3038 goto nla_put_failure;
3039
3040 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3041 if (!key)
3042 goto nla_put_failure;
3043
3044 if ((params->key &&
3045 nla_put(cookie->msg, NL80211_KEY_DATA,
3046 params->key_len, params->key)) ||
3047 (params->seq &&
3048 nla_put(cookie->msg, NL80211_KEY_SEQ,
3049 params->seq_len, params->seq)) ||
3050 (params->cipher &&
3051 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3052 params->cipher)))
3053 goto nla_put_failure;
3054
3055 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3056 goto nla_put_failure;
3057
3058 nla_nest_end(cookie->msg, key);
3059
3060 return;
3061 nla_put_failure:
3062 cookie->error = 1;
3063 }
3064
3065 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3066 {
3067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3068 int err;
3069 struct net_device *dev = info->user_ptr[1];
3070 u8 key_idx = 0;
3071 const u8 *mac_addr = NULL;
3072 bool pairwise;
3073 struct get_key_cookie cookie = {
3074 .error = 0,
3075 };
3076 void *hdr;
3077 struct sk_buff *msg;
3078
3079 if (info->attrs[NL80211_ATTR_KEY_IDX])
3080 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3081
3082 if (key_idx > 5)
3083 return -EINVAL;
3084
3085 if (info->attrs[NL80211_ATTR_MAC])
3086 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3087
3088 pairwise = !!mac_addr;
3089 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3090 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3091
3092 if (kt >= NUM_NL80211_KEYTYPES)
3093 return -EINVAL;
3094 if (kt != NL80211_KEYTYPE_GROUP &&
3095 kt != NL80211_KEYTYPE_PAIRWISE)
3096 return -EINVAL;
3097 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3098 }
3099
3100 if (!rdev->ops->get_key)
3101 return -EOPNOTSUPP;
3102
3103 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3104 return -ENOENT;
3105
3106 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3107 if (!msg)
3108 return -ENOMEM;
3109
3110 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3111 NL80211_CMD_NEW_KEY);
3112 if (!hdr)
3113 goto nla_put_failure;
3114
3115 cookie.msg = msg;
3116 cookie.idx = key_idx;
3117
3118 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3119 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3120 goto nla_put_failure;
3121 if (mac_addr &&
3122 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3123 goto nla_put_failure;
3124
3125 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3126 get_key_callback);
3127
3128 if (err)
3129 goto free_msg;
3130
3131 if (cookie.error)
3132 goto nla_put_failure;
3133
3134 genlmsg_end(msg, hdr);
3135 return genlmsg_reply(msg, info);
3136
3137 nla_put_failure:
3138 err = -ENOBUFS;
3139 free_msg:
3140 nlmsg_free(msg);
3141 return err;
3142 }
3143
3144 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3145 {
3146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3147 struct key_parse key;
3148 int err;
3149 struct net_device *dev = info->user_ptr[1];
3150
3151 err = nl80211_parse_key(info, &key);
3152 if (err)
3153 return err;
3154
3155 if (key.idx < 0)
3156 return -EINVAL;
3157
3158 /* only support setting default key */
3159 if (!key.def && !key.defmgmt)
3160 return -EINVAL;
3161
3162 wdev_lock(dev->ieee80211_ptr);
3163
3164 if (key.def) {
3165 if (!rdev->ops->set_default_key) {
3166 err = -EOPNOTSUPP;
3167 goto out;
3168 }
3169
3170 err = nl80211_key_allowed(dev->ieee80211_ptr);
3171 if (err)
3172 goto out;
3173
3174 err = rdev_set_default_key(rdev, dev, key.idx,
3175 key.def_uni, key.def_multi);
3176
3177 if (err)
3178 goto out;
3179
3180 #ifdef CONFIG_CFG80211_WEXT
3181 dev->ieee80211_ptr->wext.default_key = key.idx;
3182 #endif
3183 } else {
3184 if (key.def_uni || !key.def_multi) {
3185 err = -EINVAL;
3186 goto out;
3187 }
3188
3189 if (!rdev->ops->set_default_mgmt_key) {
3190 err = -EOPNOTSUPP;
3191 goto out;
3192 }
3193
3194 err = nl80211_key_allowed(dev->ieee80211_ptr);
3195 if (err)
3196 goto out;
3197
3198 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3199 if (err)
3200 goto out;
3201
3202 #ifdef CONFIG_CFG80211_WEXT
3203 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3204 #endif
3205 }
3206
3207 out:
3208 wdev_unlock(dev->ieee80211_ptr);
3209
3210 return err;
3211 }
3212
3213 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3214 {
3215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3216 int err;
3217 struct net_device *dev = info->user_ptr[1];
3218 struct key_parse key;
3219 const u8 *mac_addr = NULL;
3220
3221 err = nl80211_parse_key(info, &key);
3222 if (err)
3223 return err;
3224
3225 if (!key.p.key)
3226 return -EINVAL;
3227
3228 if (info->attrs[NL80211_ATTR_MAC])
3229 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3230
3231 if (key.type == -1) {
3232 if (mac_addr)
3233 key.type = NL80211_KEYTYPE_PAIRWISE;
3234 else
3235 key.type = NL80211_KEYTYPE_GROUP;
3236 }
3237
3238 /* for now */
3239 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3240 key.type != NL80211_KEYTYPE_GROUP)
3241 return -EINVAL;
3242
3243 if (!rdev->ops->add_key)
3244 return -EOPNOTSUPP;
3245
3246 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3247 key.type == NL80211_KEYTYPE_PAIRWISE,
3248 mac_addr))
3249 return -EINVAL;
3250
3251 wdev_lock(dev->ieee80211_ptr);
3252 err = nl80211_key_allowed(dev->ieee80211_ptr);
3253 if (!err)
3254 err = rdev_add_key(rdev, dev, key.idx,
3255 key.type == NL80211_KEYTYPE_PAIRWISE,
3256 mac_addr, &key.p);
3257 wdev_unlock(dev->ieee80211_ptr);
3258
3259 return err;
3260 }
3261
3262 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3263 {
3264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3265 int err;
3266 struct net_device *dev = info->user_ptr[1];
3267 u8 *mac_addr = NULL;
3268 struct key_parse key;
3269
3270 err = nl80211_parse_key(info, &key);
3271 if (err)
3272 return err;
3273
3274 if (info->attrs[NL80211_ATTR_MAC])
3275 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3276
3277 if (key.type == -1) {
3278 if (mac_addr)
3279 key.type = NL80211_KEYTYPE_PAIRWISE;
3280 else
3281 key.type = NL80211_KEYTYPE_GROUP;
3282 }
3283
3284 /* for now */
3285 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3286 key.type != NL80211_KEYTYPE_GROUP)
3287 return -EINVAL;
3288
3289 if (!rdev->ops->del_key)
3290 return -EOPNOTSUPP;
3291
3292 wdev_lock(dev->ieee80211_ptr);
3293 err = nl80211_key_allowed(dev->ieee80211_ptr);
3294
3295 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3296 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3297 err = -ENOENT;
3298
3299 if (!err)
3300 err = rdev_del_key(rdev, dev, key.idx,
3301 key.type == NL80211_KEYTYPE_PAIRWISE,
3302 mac_addr);
3303
3304 #ifdef CONFIG_CFG80211_WEXT
3305 if (!err) {
3306 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3307 dev->ieee80211_ptr->wext.default_key = -1;
3308 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3309 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3310 }
3311 #endif
3312 wdev_unlock(dev->ieee80211_ptr);
3313
3314 return err;
3315 }
3316
3317 /* This function returns an error or the number of nested attributes */
3318 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3319 {
3320 struct nlattr *attr;
3321 int n_entries = 0, tmp;
3322
3323 nla_for_each_nested(attr, nl_attr, tmp) {
3324 if (nla_len(attr) != ETH_ALEN)
3325 return -EINVAL;
3326
3327 n_entries++;
3328 }
3329
3330 return n_entries;
3331 }
3332
3333 /*
3334 * This function parses ACL information and allocates memory for ACL data.
3335 * On successful return, the calling function is responsible to free the
3336 * ACL buffer returned by this function.
3337 */
3338 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3339 struct genl_info *info)
3340 {
3341 enum nl80211_acl_policy acl_policy;
3342 struct nlattr *attr;
3343 struct cfg80211_acl_data *acl;
3344 int i = 0, n_entries, tmp;
3345
3346 if (!wiphy->max_acl_mac_addrs)
3347 return ERR_PTR(-EOPNOTSUPP);
3348
3349 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3350 return ERR_PTR(-EINVAL);
3351
3352 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3353 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3354 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3355 return ERR_PTR(-EINVAL);
3356
3357 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3358 return ERR_PTR(-EINVAL);
3359
3360 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3361 if (n_entries < 0)
3362 return ERR_PTR(n_entries);
3363
3364 if (n_entries > wiphy->max_acl_mac_addrs)
3365 return ERR_PTR(-ENOTSUPP);
3366
3367 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3368 GFP_KERNEL);
3369 if (!acl)
3370 return ERR_PTR(-ENOMEM);
3371
3372 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3373 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3374 i++;
3375 }
3376
3377 acl->n_acl_entries = n_entries;
3378 acl->acl_policy = acl_policy;
3379
3380 return acl;
3381 }
3382
3383 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3384 {
3385 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3386 struct net_device *dev = info->user_ptr[1];
3387 struct cfg80211_acl_data *acl;
3388 int err;
3389
3390 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3391 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3392 return -EOPNOTSUPP;
3393
3394 if (!dev->ieee80211_ptr->beacon_interval)
3395 return -EINVAL;
3396
3397 acl = parse_acl_data(&rdev->wiphy, info);
3398 if (IS_ERR(acl))
3399 return PTR_ERR(acl);
3400
3401 err = rdev_set_mac_acl(rdev, dev, acl);
3402
3403 kfree(acl);
3404
3405 return err;
3406 }
3407
3408 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3409 u8 *rates, u8 rates_len)
3410 {
3411 u8 i;
3412 u32 mask = 0;
3413
3414 for (i = 0; i < rates_len; i++) {
3415 int rate = (rates[i] & 0x7f) * 5;
3416 int ridx;
3417
3418 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3419 struct ieee80211_rate *srate =
3420 &sband->bitrates[ridx];
3421 if (rate == srate->bitrate) {
3422 mask |= 1 << ridx;
3423 break;
3424 }
3425 }
3426 if (ridx == sband->n_bitrates)
3427 return 0; /* rate not found */
3428 }
3429
3430 return mask;
3431 }
3432
3433 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3434 u8 *rates, u8 rates_len,
3435 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3436 {
3437 u8 i;
3438
3439 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3440
3441 for (i = 0; i < rates_len; i++) {
3442 int ridx, rbit;
3443
3444 ridx = rates[i] / 8;
3445 rbit = BIT(rates[i] % 8);
3446
3447 /* check validity */
3448 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3449 return false;
3450
3451 /* check availability */
3452 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3453 mcs[ridx] |= rbit;
3454 else
3455 return false;
3456 }
3457
3458 return true;
3459 }
3460
3461 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3462 {
3463 u16 mcs_mask = 0;
3464
3465 switch (vht_mcs_map) {
3466 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3467 break;
3468 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3469 mcs_mask = 0x00FF;
3470 break;
3471 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3472 mcs_mask = 0x01FF;
3473 break;
3474 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3475 mcs_mask = 0x03FF;
3476 break;
3477 default:
3478 break;
3479 }
3480
3481 return mcs_mask;
3482 }
3483
3484 static void vht_build_mcs_mask(u16 vht_mcs_map,
3485 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3486 {
3487 u8 nss;
3488
3489 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3490 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3491 vht_mcs_map >>= 2;
3492 }
3493 }
3494
3495 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3496 struct nl80211_txrate_vht *txrate,
3497 u16 mcs[NL80211_VHT_NSS_MAX])
3498 {
3499 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3500 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3501 u8 i;
3502
3503 if (!sband->vht_cap.vht_supported)
3504 return false;
3505
3506 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3507
3508 /* Build vht_mcs_mask from VHT capabilities */
3509 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3510
3511 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3512 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3513 mcs[i] = txrate->mcs[i];
3514 else
3515 return false;
3516 }
3517
3518 return true;
3519 }
3520
3521 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3522 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3523 .len = NL80211_MAX_SUPP_RATES },
3524 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3525 .len = NL80211_MAX_SUPP_HT_RATES },
3526 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3527 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3528 };
3529
3530 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3531 struct cfg80211_bitrate_mask *mask)
3532 {
3533 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3534 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3535 int rem, i;
3536 struct nlattr *tx_rates;
3537 struct ieee80211_supported_band *sband;
3538 u16 vht_tx_mcs_map;
3539
3540 memset(mask, 0, sizeof(*mask));
3541 /* Default to all rates enabled */
3542 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3543 sband = rdev->wiphy.bands[i];
3544
3545 if (!sband)
3546 continue;
3547
3548 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3549 memcpy(mask->control[i].ht_mcs,
3550 sband->ht_cap.mcs.rx_mask,
3551 sizeof(mask->control[i].ht_mcs));
3552
3553 if (!sband->vht_cap.vht_supported)
3554 continue;
3555
3556 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3557 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3558 }
3559
3560 /* if no rates are given set it back to the defaults */
3561 if (!info->attrs[NL80211_ATTR_TX_RATES])
3562 goto out;
3563
3564 /* The nested attribute uses enum nl80211_band as the index. This maps
3565 * directly to the enum nl80211_band values used in cfg80211.
3566 */
3567 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3568 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3569 enum nl80211_band band = nla_type(tx_rates);
3570 int err;
3571
3572 if (band < 0 || band >= NUM_NL80211_BANDS)
3573 return -EINVAL;
3574 sband = rdev->wiphy.bands[band];
3575 if (sband == NULL)
3576 return -EINVAL;
3577 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3578 nl80211_txattr_policy);
3579 if (err)
3580 return err;
3581 if (tb[NL80211_TXRATE_LEGACY]) {
3582 mask->control[band].legacy = rateset_to_mask(
3583 sband,
3584 nla_data(tb[NL80211_TXRATE_LEGACY]),
3585 nla_len(tb[NL80211_TXRATE_LEGACY]));
3586 if ((mask->control[band].legacy == 0) &&
3587 nla_len(tb[NL80211_TXRATE_LEGACY]))
3588 return -EINVAL;
3589 }
3590 if (tb[NL80211_TXRATE_HT]) {
3591 if (!ht_rateset_to_mask(
3592 sband,
3593 nla_data(tb[NL80211_TXRATE_HT]),
3594 nla_len(tb[NL80211_TXRATE_HT]),
3595 mask->control[band].ht_mcs))
3596 return -EINVAL;
3597 }
3598 if (tb[NL80211_TXRATE_VHT]) {
3599 if (!vht_set_mcs_mask(
3600 sband,
3601 nla_data(tb[NL80211_TXRATE_VHT]),
3602 mask->control[band].vht_mcs))
3603 return -EINVAL;
3604 }
3605 if (tb[NL80211_TXRATE_GI]) {
3606 mask->control[band].gi =
3607 nla_get_u8(tb[NL80211_TXRATE_GI]);
3608 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3609 return -EINVAL;
3610 }
3611
3612 if (mask->control[band].legacy == 0) {
3613 /* don't allow empty legacy rates if HT or VHT
3614 * are not even supported.
3615 */
3616 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3617 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3618 return -EINVAL;
3619
3620 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3621 if (mask->control[band].ht_mcs[i])
3622 goto out;
3623
3624 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3625 if (mask->control[band].vht_mcs[i])
3626 goto out;
3627
3628 /* legacy and mcs rates may not be both empty */
3629 return -EINVAL;
3630 }
3631 }
3632
3633 out:
3634 return 0;
3635 }
3636
3637 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3638 enum nl80211_band band,
3639 struct cfg80211_bitrate_mask *beacon_rate)
3640 {
3641 u32 count_ht, count_vht, i;
3642 u32 rate = beacon_rate->control[band].legacy;
3643
3644 /* Allow only one rate */
3645 if (hweight32(rate) > 1)
3646 return -EINVAL;
3647
3648 count_ht = 0;
3649 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3650 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3651 return -EINVAL;
3652 } else if (beacon_rate->control[band].ht_mcs[i]) {
3653 count_ht++;
3654 if (count_ht > 1)
3655 return -EINVAL;
3656 }
3657 if (count_ht && rate)
3658 return -EINVAL;
3659 }
3660
3661 count_vht = 0;
3662 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3663 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3664 return -EINVAL;
3665 } else if (beacon_rate->control[band].vht_mcs[i]) {
3666 count_vht++;
3667 if (count_vht > 1)
3668 return -EINVAL;
3669 }
3670 if (count_vht && rate)
3671 return -EINVAL;
3672 }
3673
3674 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3675 return -EINVAL;
3676
3677 if (rate &&
3678 !wiphy_ext_feature_isset(&rdev->wiphy,
3679 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3680 return -EINVAL;
3681 if (count_ht &&
3682 !wiphy_ext_feature_isset(&rdev->wiphy,
3683 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3684 return -EINVAL;
3685 if (count_vht &&
3686 !wiphy_ext_feature_isset(&rdev->wiphy,
3687 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3688 return -EINVAL;
3689
3690 return 0;
3691 }
3692
3693 static int nl80211_parse_beacon(struct nlattr *attrs[],
3694 struct cfg80211_beacon_data *bcn)
3695 {
3696 bool haveinfo = false;
3697
3698 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3699 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3700 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3701 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3702 return -EINVAL;
3703
3704 memset(bcn, 0, sizeof(*bcn));
3705
3706 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3707 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3708 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3709 if (!bcn->head_len)
3710 return -EINVAL;
3711 haveinfo = true;
3712 }
3713
3714 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3715 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3716 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3717 haveinfo = true;
3718 }
3719
3720 if (!haveinfo)
3721 return -EINVAL;
3722
3723 if (attrs[NL80211_ATTR_IE]) {
3724 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3725 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3726 }
3727
3728 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3729 bcn->proberesp_ies =
3730 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3731 bcn->proberesp_ies_len =
3732 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3733 }
3734
3735 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3736 bcn->assocresp_ies =
3737 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3738 bcn->assocresp_ies_len =
3739 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3740 }
3741
3742 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3743 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3744 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3745 }
3746
3747 return 0;
3748 }
3749
3750 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3751 const u8 *rates)
3752 {
3753 int i;
3754
3755 if (!rates)
3756 return;
3757
3758 for (i = 0; i < rates[1]; i++) {
3759 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3760 params->ht_required = true;
3761 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3762 params->vht_required = true;
3763 }
3764 }
3765
3766 /*
3767 * Since the nl80211 API didn't include, from the beginning, attributes about
3768 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3769 * benefit of drivers that rebuild IEs in the firmware.
3770 */
3771 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3772 {
3773 const struct cfg80211_beacon_data *bcn = &params->beacon;
3774 size_t ies_len = bcn->beacon_ies_len;
3775 const u8 *ies = bcn->beacon_ies;
3776 const u8 *rates;
3777 const u8 *cap;
3778
3779 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3780 nl80211_check_ap_rate_selectors(params, rates);
3781
3782 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3783 nl80211_check_ap_rate_selectors(params, rates);
3784
3785 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3786 if (cap && cap[1] >= sizeof(*params->ht_cap))
3787 params->ht_cap = (void *)(cap + 2);
3788 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3789 if (cap && cap[1] >= sizeof(*params->vht_cap))
3790 params->vht_cap = (void *)(cap + 2);
3791 }
3792
3793 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3794 struct cfg80211_ap_settings *params)
3795 {
3796 struct wireless_dev *wdev;
3797 bool ret = false;
3798
3799 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3800 if (wdev->iftype != NL80211_IFTYPE_AP &&
3801 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3802 continue;
3803
3804 if (!wdev->preset_chandef.chan)
3805 continue;
3806
3807 params->chandef = wdev->preset_chandef;
3808 ret = true;
3809 break;
3810 }
3811
3812 return ret;
3813 }
3814
3815 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3816 enum nl80211_auth_type auth_type,
3817 enum nl80211_commands cmd)
3818 {
3819 if (auth_type > NL80211_AUTHTYPE_MAX)
3820 return false;
3821
3822 switch (cmd) {
3823 case NL80211_CMD_AUTHENTICATE:
3824 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3825 auth_type == NL80211_AUTHTYPE_SAE)
3826 return false;
3827 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3828 NL80211_EXT_FEATURE_FILS_STA) &&
3829 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3830 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3831 auth_type == NL80211_AUTHTYPE_FILS_PK))
3832 return false;
3833 return true;
3834 case NL80211_CMD_CONNECT:
3835 case NL80211_CMD_START_AP:
3836 /* SAE not supported yet */
3837 if (auth_type == NL80211_AUTHTYPE_SAE)
3838 return false;
3839 /* FILS not supported yet */
3840 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3841 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3842 auth_type == NL80211_AUTHTYPE_FILS_PK)
3843 return false;
3844 return true;
3845 default:
3846 return false;
3847 }
3848 }
3849
3850 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3851 {
3852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3853 struct net_device *dev = info->user_ptr[1];
3854 struct wireless_dev *wdev = dev->ieee80211_ptr;
3855 struct cfg80211_ap_settings params;
3856 int err;
3857
3858 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3859 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3860 return -EOPNOTSUPP;
3861
3862 if (!rdev->ops->start_ap)
3863 return -EOPNOTSUPP;
3864
3865 if (wdev->beacon_interval)
3866 return -EALREADY;
3867
3868 memset(&params, 0, sizeof(params));
3869
3870 /* these are required for START_AP */
3871 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3872 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3873 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3874 return -EINVAL;
3875
3876 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3877 if (err)
3878 return err;
3879
3880 params.beacon_interval =
3881 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3882 params.dtim_period =
3883 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3884
3885 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3886 params.beacon_interval);
3887 if (err)
3888 return err;
3889
3890 /*
3891 * In theory, some of these attributes should be required here
3892 * but since they were not used when the command was originally
3893 * added, keep them optional for old user space programs to let
3894 * them continue to work with drivers that do not need the
3895 * additional information -- drivers must check!
3896 */
3897 if (info->attrs[NL80211_ATTR_SSID]) {
3898 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3899 params.ssid_len =
3900 nla_len(info->attrs[NL80211_ATTR_SSID]);
3901 if (params.ssid_len == 0 ||
3902 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3903 return -EINVAL;
3904 }
3905
3906 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3907 params.hidden_ssid = nla_get_u32(
3908 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3909 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3910 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3911 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3912 return -EINVAL;
3913 }
3914
3915 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3916
3917 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3918 params.auth_type = nla_get_u32(
3919 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3920 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3921 NL80211_CMD_START_AP))
3922 return -EINVAL;
3923 } else
3924 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3925
3926 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3927 NL80211_MAX_NR_CIPHER_SUITES);
3928 if (err)
3929 return err;
3930
3931 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3932 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3933 return -EOPNOTSUPP;
3934 params.inactivity_timeout = nla_get_u16(
3935 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3936 }
3937
3938 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3939 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3940 return -EINVAL;
3941 params.p2p_ctwindow =
3942 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3943 if (params.p2p_ctwindow > 127)
3944 return -EINVAL;
3945 if (params.p2p_ctwindow != 0 &&
3946 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3947 return -EINVAL;
3948 }
3949
3950 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3951 u8 tmp;
3952
3953 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3954 return -EINVAL;
3955 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3956 if (tmp > 1)
3957 return -EINVAL;
3958 params.p2p_opp_ps = tmp;
3959 if (params.p2p_opp_ps != 0 &&
3960 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3961 return -EINVAL;
3962 }
3963
3964 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3965 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3966 if (err)
3967 return err;
3968 } else if (wdev->preset_chandef.chan) {
3969 params.chandef = wdev->preset_chandef;
3970 } else if (!nl80211_get_ap_channel(rdev, &params))
3971 return -EINVAL;
3972
3973 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3974 wdev->iftype))
3975 return -EINVAL;
3976
3977 if (info->attrs[NL80211_ATTR_TX_RATES]) {
3978 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3979 if (err)
3980 return err;
3981
3982 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3983 &params.beacon_rate);
3984 if (err)
3985 return err;
3986 }
3987
3988 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3989 params.smps_mode =
3990 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3991 switch (params.smps_mode) {
3992 case NL80211_SMPS_OFF:
3993 break;
3994 case NL80211_SMPS_STATIC:
3995 if (!(rdev->wiphy.features &
3996 NL80211_FEATURE_STATIC_SMPS))
3997 return -EINVAL;
3998 break;
3999 case NL80211_SMPS_DYNAMIC:
4000 if (!(rdev->wiphy.features &
4001 NL80211_FEATURE_DYNAMIC_SMPS))
4002 return -EINVAL;
4003 break;
4004 default:
4005 return -EINVAL;
4006 }
4007 } else {
4008 params.smps_mode = NL80211_SMPS_OFF;
4009 }
4010
4011 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4012 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4013 return -EOPNOTSUPP;
4014
4015 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4016 params.acl = parse_acl_data(&rdev->wiphy, info);
4017 if (IS_ERR(params.acl))
4018 return PTR_ERR(params.acl);
4019 }
4020
4021 nl80211_calculate_ap_params(&params);
4022
4023 wdev_lock(wdev);
4024 err = rdev_start_ap(rdev, dev, &params);
4025 if (!err) {
4026 wdev->preset_chandef = params.chandef;
4027 wdev->beacon_interval = params.beacon_interval;
4028 wdev->chandef = params.chandef;
4029 wdev->ssid_len = params.ssid_len;
4030 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4031 }
4032 wdev_unlock(wdev);
4033
4034 kfree(params.acl);
4035
4036 return err;
4037 }
4038
4039 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4040 {
4041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4042 struct net_device *dev = info->user_ptr[1];
4043 struct wireless_dev *wdev = dev->ieee80211_ptr;
4044 struct cfg80211_beacon_data params;
4045 int err;
4046
4047 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4048 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4049 return -EOPNOTSUPP;
4050
4051 if (!rdev->ops->change_beacon)
4052 return -EOPNOTSUPP;
4053
4054 if (!wdev->beacon_interval)
4055 return -EINVAL;
4056
4057 err = nl80211_parse_beacon(info->attrs, &params);
4058 if (err)
4059 return err;
4060
4061 wdev_lock(wdev);
4062 err = rdev_change_beacon(rdev, dev, &params);
4063 wdev_unlock(wdev);
4064
4065 return err;
4066 }
4067
4068 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4069 {
4070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4071 struct net_device *dev = info->user_ptr[1];
4072
4073 return cfg80211_stop_ap(rdev, dev, false);
4074 }
4075
4076 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4077 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4078 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4079 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4080 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4081 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4082 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4083 };
4084
4085 static int parse_station_flags(struct genl_info *info,
4086 enum nl80211_iftype iftype,
4087 struct station_parameters *params)
4088 {
4089 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4090 struct nlattr *nla;
4091 int flag;
4092
4093 /*
4094 * Try parsing the new attribute first so userspace
4095 * can specify both for older kernels.
4096 */
4097 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4098 if (nla) {
4099 struct nl80211_sta_flag_update *sta_flags;
4100
4101 sta_flags = nla_data(nla);
4102 params->sta_flags_mask = sta_flags->mask;
4103 params->sta_flags_set = sta_flags->set;
4104 params->sta_flags_set &= params->sta_flags_mask;
4105 if ((params->sta_flags_mask |
4106 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4107 return -EINVAL;
4108 return 0;
4109 }
4110
4111 /* if present, parse the old attribute */
4112
4113 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4114 if (!nla)
4115 return 0;
4116
4117 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4118 nla, sta_flags_policy))
4119 return -EINVAL;
4120
4121 /*
4122 * Only allow certain flags for interface types so that
4123 * other attributes are silently ignored. Remember that
4124 * this is backward compatibility code with old userspace
4125 * and shouldn't be hit in other cases anyway.
4126 */
4127 switch (iftype) {
4128 case NL80211_IFTYPE_AP:
4129 case NL80211_IFTYPE_AP_VLAN:
4130 case NL80211_IFTYPE_P2P_GO:
4131 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4132 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4133 BIT(NL80211_STA_FLAG_WME) |
4134 BIT(NL80211_STA_FLAG_MFP);
4135 break;
4136 case NL80211_IFTYPE_P2P_CLIENT:
4137 case NL80211_IFTYPE_STATION:
4138 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4139 BIT(NL80211_STA_FLAG_TDLS_PEER);
4140 break;
4141 case NL80211_IFTYPE_MESH_POINT:
4142 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4143 BIT(NL80211_STA_FLAG_MFP) |
4144 BIT(NL80211_STA_FLAG_AUTHORIZED);
4145 default:
4146 return -EINVAL;
4147 }
4148
4149 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4150 if (flags[flag]) {
4151 params->sta_flags_set |= (1<<flag);
4152
4153 /* no longer support new API additions in old API */
4154 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4155 return -EINVAL;
4156 }
4157 }
4158
4159 return 0;
4160 }
4161
4162 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4163 int attr)
4164 {
4165 struct nlattr *rate;
4166 u32 bitrate;
4167 u16 bitrate_compat;
4168 enum nl80211_attrs rate_flg;
4169
4170 rate = nla_nest_start(msg, attr);
4171 if (!rate)
4172 return false;
4173
4174 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4175 bitrate = cfg80211_calculate_bitrate(info);
4176 /* report 16-bit bitrate only if we can */
4177 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4178 if (bitrate > 0 &&
4179 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4180 return false;
4181 if (bitrate_compat > 0 &&
4182 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4183 return false;
4184
4185 switch (info->bw) {
4186 case RATE_INFO_BW_5:
4187 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4188 break;
4189 case RATE_INFO_BW_10:
4190 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4191 break;
4192 default:
4193 WARN_ON(1);
4194 /* fall through */
4195 case RATE_INFO_BW_20:
4196 rate_flg = 0;
4197 break;
4198 case RATE_INFO_BW_40:
4199 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4200 break;
4201 case RATE_INFO_BW_80:
4202 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4203 break;
4204 case RATE_INFO_BW_160:
4205 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4206 break;
4207 }
4208
4209 if (rate_flg && nla_put_flag(msg, rate_flg))
4210 return false;
4211
4212 if (info->flags & RATE_INFO_FLAGS_MCS) {
4213 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4214 return false;
4215 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4216 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4217 return false;
4218 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4219 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4220 return false;
4221 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4222 return false;
4223 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4224 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4225 return false;
4226 }
4227
4228 nla_nest_end(msg, rate);
4229 return true;
4230 }
4231
4232 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4233 int id)
4234 {
4235 void *attr;
4236 int i = 0;
4237
4238 if (!mask)
4239 return true;
4240
4241 attr = nla_nest_start(msg, id);
4242 if (!attr)
4243 return false;
4244
4245 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4246 if (!(mask & BIT(i)))
4247 continue;
4248
4249 if (nla_put_u8(msg, i, signal[i]))
4250 return false;
4251 }
4252
4253 nla_nest_end(msg, attr);
4254
4255 return true;
4256 }
4257
4258 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4259 u32 seq, int flags,
4260 struct cfg80211_registered_device *rdev,
4261 struct net_device *dev,
4262 const u8 *mac_addr, struct station_info *sinfo)
4263 {
4264 void *hdr;
4265 struct nlattr *sinfoattr, *bss_param;
4266
4267 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4268 if (!hdr)
4269 return -1;
4270
4271 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4272 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4273 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4274 goto nla_put_failure;
4275
4276 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4277 if (!sinfoattr)
4278 goto nla_put_failure;
4279
4280 #define PUT_SINFO(attr, memb, type) do { \
4281 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4282 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4283 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4284 sinfo->memb)) \
4285 goto nla_put_failure; \
4286 } while (0)
4287 #define PUT_SINFO_U64(attr, memb) do { \
4288 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4289 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4290 sinfo->memb, NL80211_STA_INFO_PAD)) \
4291 goto nla_put_failure; \
4292 } while (0)
4293
4294 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4295 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4296
4297 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4298 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4299 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4300 (u32)sinfo->rx_bytes))
4301 goto nla_put_failure;
4302
4303 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4304 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4305 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4306 (u32)sinfo->tx_bytes))
4307 goto nla_put_failure;
4308
4309 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4310 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4311 PUT_SINFO(LLID, llid, u16);
4312 PUT_SINFO(PLID, plid, u16);
4313 PUT_SINFO(PLINK_STATE, plink_state, u8);
4314 PUT_SINFO_U64(RX_DURATION, rx_duration);
4315
4316 switch (rdev->wiphy.signal_type) {
4317 case CFG80211_SIGNAL_TYPE_MBM:
4318 PUT_SINFO(SIGNAL, signal, u8);
4319 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4320 break;
4321 default:
4322 break;
4323 }
4324 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4325 if (!nl80211_put_signal(msg, sinfo->chains,
4326 sinfo->chain_signal,
4327 NL80211_STA_INFO_CHAIN_SIGNAL))
4328 goto nla_put_failure;
4329 }
4330 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4331 if (!nl80211_put_signal(msg, sinfo->chains,
4332 sinfo->chain_signal_avg,
4333 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4334 goto nla_put_failure;
4335 }
4336 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4337 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4338 NL80211_STA_INFO_TX_BITRATE))
4339 goto nla_put_failure;
4340 }
4341 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4342 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4343 NL80211_STA_INFO_RX_BITRATE))
4344 goto nla_put_failure;
4345 }
4346
4347 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4348 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4349 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4350 PUT_SINFO(TX_FAILED, tx_failed, u32);
4351 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4352 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4353 PUT_SINFO(LOCAL_PM, local_pm, u32);
4354 PUT_SINFO(PEER_PM, peer_pm, u32);
4355 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4356
4357 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4358 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4359 if (!bss_param)
4360 goto nla_put_failure;
4361
4362 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4363 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4364 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4365 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4366 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4367 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4368 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4369 sinfo->bss_param.dtim_period) ||
4370 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4371 sinfo->bss_param.beacon_interval))
4372 goto nla_put_failure;
4373
4374 nla_nest_end(msg, bss_param);
4375 }
4376 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4377 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4378 sizeof(struct nl80211_sta_flag_update),
4379 &sinfo->sta_flags))
4380 goto nla_put_failure;
4381
4382 PUT_SINFO_U64(T_OFFSET, t_offset);
4383 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4384 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4385 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4386
4387 #undef PUT_SINFO
4388 #undef PUT_SINFO_U64
4389
4390 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4391 struct nlattr *tidsattr;
4392 int tid;
4393
4394 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4395 if (!tidsattr)
4396 goto nla_put_failure;
4397
4398 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4399 struct cfg80211_tid_stats *tidstats;
4400 struct nlattr *tidattr;
4401
4402 tidstats = &sinfo->pertid[tid];
4403
4404 if (!tidstats->filled)
4405 continue;
4406
4407 tidattr = nla_nest_start(msg, tid + 1);
4408 if (!tidattr)
4409 goto nla_put_failure;
4410
4411 #define PUT_TIDVAL_U64(attr, memb) do { \
4412 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4413 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4414 tidstats->memb, NL80211_TID_STATS_PAD)) \
4415 goto nla_put_failure; \
4416 } while (0)
4417
4418 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4419 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4420 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4421 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4422
4423 #undef PUT_TIDVAL_U64
4424 nla_nest_end(msg, tidattr);
4425 }
4426
4427 nla_nest_end(msg, tidsattr);
4428 }
4429
4430 nla_nest_end(msg, sinfoattr);
4431
4432 if (sinfo->assoc_req_ies_len &&
4433 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4434 sinfo->assoc_req_ies))
4435 goto nla_put_failure;
4436
4437 genlmsg_end(msg, hdr);
4438 return 0;
4439
4440 nla_put_failure:
4441 genlmsg_cancel(msg, hdr);
4442 return -EMSGSIZE;
4443 }
4444
4445 static int nl80211_dump_station(struct sk_buff *skb,
4446 struct netlink_callback *cb)
4447 {
4448 struct station_info sinfo;
4449 struct cfg80211_registered_device *rdev;
4450 struct wireless_dev *wdev;
4451 u8 mac_addr[ETH_ALEN];
4452 int sta_idx = cb->args[2];
4453 int err;
4454
4455 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4456 if (err)
4457 return err;
4458
4459 if (!wdev->netdev) {
4460 err = -EINVAL;
4461 goto out_err;
4462 }
4463
4464 if (!rdev->ops->dump_station) {
4465 err = -EOPNOTSUPP;
4466 goto out_err;
4467 }
4468
4469 while (1) {
4470 memset(&sinfo, 0, sizeof(sinfo));
4471 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4472 mac_addr, &sinfo);
4473 if (err == -ENOENT)
4474 break;
4475 if (err)
4476 goto out_err;
4477
4478 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4479 NETLINK_CB(cb->skb).portid,
4480 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4481 rdev, wdev->netdev, mac_addr,
4482 &sinfo) < 0)
4483 goto out;
4484
4485 sta_idx++;
4486 }
4487
4488 out:
4489 cb->args[2] = sta_idx;
4490 err = skb->len;
4491 out_err:
4492 nl80211_finish_wdev_dump(rdev);
4493
4494 return err;
4495 }
4496
4497 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4498 {
4499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4500 struct net_device *dev = info->user_ptr[1];
4501 struct station_info sinfo;
4502 struct sk_buff *msg;
4503 u8 *mac_addr = NULL;
4504 int err;
4505
4506 memset(&sinfo, 0, sizeof(sinfo));
4507
4508 if (!info->attrs[NL80211_ATTR_MAC])
4509 return -EINVAL;
4510
4511 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4512
4513 if (!rdev->ops->get_station)
4514 return -EOPNOTSUPP;
4515
4516 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4517 if (err)
4518 return err;
4519
4520 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4521 if (!msg)
4522 return -ENOMEM;
4523
4524 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4525 info->snd_portid, info->snd_seq, 0,
4526 rdev, dev, mac_addr, &sinfo) < 0) {
4527 nlmsg_free(msg);
4528 return -ENOBUFS;
4529 }
4530
4531 return genlmsg_reply(msg, info);
4532 }
4533
4534 int cfg80211_check_station_change(struct wiphy *wiphy,
4535 struct station_parameters *params,
4536 enum cfg80211_station_type statype)
4537 {
4538 if (params->listen_interval != -1 &&
4539 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4540 return -EINVAL;
4541
4542 if (params->support_p2p_ps != -1 &&
4543 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4544 return -EINVAL;
4545
4546 if (params->aid &&
4547 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4548 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4549 return -EINVAL;
4550
4551 /* When you run into this, adjust the code below for the new flag */
4552 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4553
4554 switch (statype) {
4555 case CFG80211_STA_MESH_PEER_KERNEL:
4556 case CFG80211_STA_MESH_PEER_USER:
4557 /*
4558 * No ignoring the TDLS flag here -- the userspace mesh
4559 * code doesn't have the bug of including TDLS in the
4560 * mask everywhere.
4561 */
4562 if (params->sta_flags_mask &
4563 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4564 BIT(NL80211_STA_FLAG_MFP) |
4565 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4566 return -EINVAL;
4567 break;
4568 case CFG80211_STA_TDLS_PEER_SETUP:
4569 case CFG80211_STA_TDLS_PEER_ACTIVE:
4570 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4571 return -EINVAL;
4572 /* ignore since it can't change */
4573 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4574 break;
4575 default:
4576 /* disallow mesh-specific things */
4577 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4578 return -EINVAL;
4579 if (params->local_pm)
4580 return -EINVAL;
4581 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4582 return -EINVAL;
4583 }
4584
4585 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4586 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4587 /* TDLS can't be set, ... */
4588 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4589 return -EINVAL;
4590 /*
4591 * ... but don't bother the driver with it. This works around
4592 * a hostapd/wpa_supplicant issue -- it always includes the
4593 * TLDS_PEER flag in the mask even for AP mode.
4594 */
4595 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4596 }
4597
4598 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4599 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4600 /* reject other things that can't change */
4601 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4602 return -EINVAL;
4603 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4604 return -EINVAL;
4605 if (params->supported_rates)
4606 return -EINVAL;
4607 if (params->ext_capab || params->ht_capa || params->vht_capa)
4608 return -EINVAL;
4609 }
4610
4611 if (statype != CFG80211_STA_AP_CLIENT &&
4612 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4613 if (params->vlan)
4614 return -EINVAL;
4615 }
4616
4617 switch (statype) {
4618 case CFG80211_STA_AP_MLME_CLIENT:
4619 /* Use this only for authorizing/unauthorizing a station */
4620 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4621 return -EOPNOTSUPP;
4622 break;
4623 case CFG80211_STA_AP_CLIENT:
4624 case CFG80211_STA_AP_CLIENT_UNASSOC:
4625 /* accept only the listed bits */
4626 if (params->sta_flags_mask &
4627 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4628 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4629 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4630 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4631 BIT(NL80211_STA_FLAG_WME) |
4632 BIT(NL80211_STA_FLAG_MFP)))
4633 return -EINVAL;
4634
4635 /* but authenticated/associated only if driver handles it */
4636 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4637 params->sta_flags_mask &
4638 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4639 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4640 return -EINVAL;
4641 break;
4642 case CFG80211_STA_IBSS:
4643 case CFG80211_STA_AP_STA:
4644 /* reject any changes other than AUTHORIZED */
4645 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4646 return -EINVAL;
4647 break;
4648 case CFG80211_STA_TDLS_PEER_SETUP:
4649 /* reject any changes other than AUTHORIZED or WME */
4650 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4651 BIT(NL80211_STA_FLAG_WME)))
4652 return -EINVAL;
4653 /* force (at least) rates when authorizing */
4654 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4655 !params->supported_rates)
4656 return -EINVAL;
4657 break;
4658 case CFG80211_STA_TDLS_PEER_ACTIVE:
4659 /* reject any changes */
4660 return -EINVAL;
4661 case CFG80211_STA_MESH_PEER_KERNEL:
4662 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4663 return -EINVAL;
4664 break;
4665 case CFG80211_STA_MESH_PEER_USER:
4666 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4667 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4668 return -EINVAL;
4669 break;
4670 }
4671
4672 /*
4673 * Older kernel versions ignored this attribute entirely, so don't
4674 * reject attempts to update it but mark it as unused instead so the
4675 * driver won't look at the data.
4676 */
4677 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4678 statype != CFG80211_STA_TDLS_PEER_SETUP)
4679 params->opmode_notif_used = false;
4680
4681 return 0;
4682 }
4683 EXPORT_SYMBOL(cfg80211_check_station_change);
4684
4685 /*
4686 * Get vlan interface making sure it is running and on the right wiphy.
4687 */
4688 static struct net_device *get_vlan(struct genl_info *info,
4689 struct cfg80211_registered_device *rdev)
4690 {
4691 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4692 struct net_device *v;
4693 int ret;
4694
4695 if (!vlanattr)
4696 return NULL;
4697
4698 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4699 if (!v)
4700 return ERR_PTR(-ENODEV);
4701
4702 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4703 ret = -EINVAL;
4704 goto error;
4705 }
4706
4707 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4708 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4709 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4710 ret = -EINVAL;
4711 goto error;
4712 }
4713
4714 if (!netif_running(v)) {
4715 ret = -ENETDOWN;
4716 goto error;
4717 }
4718
4719 return v;
4720 error:
4721 dev_put(v);
4722 return ERR_PTR(ret);
4723 }
4724
4725 static const struct nla_policy
4726 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4727 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4728 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4729 };
4730
4731 static int nl80211_parse_sta_wme(struct genl_info *info,
4732 struct station_parameters *params)
4733 {
4734 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4735 struct nlattr *nla;
4736 int err;
4737
4738 /* parse WME attributes if present */
4739 if (!info->attrs[NL80211_ATTR_STA_WME])
4740 return 0;
4741
4742 nla = info->attrs[NL80211_ATTR_STA_WME];
4743 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4744 nl80211_sta_wme_policy);
4745 if (err)
4746 return err;
4747
4748 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4749 params->uapsd_queues = nla_get_u8(
4750 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4751 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4752 return -EINVAL;
4753
4754 if (tb[NL80211_STA_WME_MAX_SP])
4755 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4756
4757 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4758 return -EINVAL;
4759
4760 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4761
4762 return 0;
4763 }
4764
4765 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4766 struct station_parameters *params)
4767 {
4768 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4769 params->supported_channels =
4770 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4771 params->supported_channels_len =
4772 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4773 /*
4774 * Need to include at least one (first channel, number of
4775 * channels) tuple for each subband, and must have proper
4776 * tuples for the rest of the data as well.
4777 */
4778 if (params->supported_channels_len < 2)
4779 return -EINVAL;
4780 if (params->supported_channels_len % 2)
4781 return -EINVAL;
4782 }
4783
4784 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4785 params->supported_oper_classes =
4786 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4787 params->supported_oper_classes_len =
4788 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4789 /*
4790 * The value of the Length field of the Supported Operating
4791 * Classes element is between 2 and 253.
4792 */
4793 if (params->supported_oper_classes_len < 2 ||
4794 params->supported_oper_classes_len > 253)
4795 return -EINVAL;
4796 }
4797 return 0;
4798 }
4799
4800 static int nl80211_set_station_tdls(struct genl_info *info,
4801 struct station_parameters *params)
4802 {
4803 int err;
4804 /* Dummy STA entry gets updated once the peer capabilities are known */
4805 if (info->attrs[NL80211_ATTR_PEER_AID])
4806 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4807 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4808 params->ht_capa =
4809 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4810 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4811 params->vht_capa =
4812 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4813
4814 err = nl80211_parse_sta_channel_info(info, params);
4815 if (err)
4816 return err;
4817
4818 return nl80211_parse_sta_wme(info, params);
4819 }
4820
4821 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4822 {
4823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4824 struct net_device *dev = info->user_ptr[1];
4825 struct station_parameters params;
4826 u8 *mac_addr;
4827 int err;
4828
4829 memset(&params, 0, sizeof(params));
4830
4831 if (!rdev->ops->change_station)
4832 return -EOPNOTSUPP;
4833
4834 /*
4835 * AID and listen_interval properties can be set only for unassociated
4836 * station. Include these parameters here and will check them in
4837 * cfg80211_check_station_change().
4838 */
4839 if (info->attrs[NL80211_ATTR_STA_AID])
4840 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4841
4842 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4843 params.listen_interval =
4844 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4845 else
4846 params.listen_interval = -1;
4847
4848 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4849 u8 tmp;
4850
4851 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4852 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4853 return -EINVAL;
4854
4855 params.support_p2p_ps = tmp;
4856 } else {
4857 params.support_p2p_ps = -1;
4858 }
4859
4860 if (!info->attrs[NL80211_ATTR_MAC])
4861 return -EINVAL;
4862
4863 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4864
4865 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4866 params.supported_rates =
4867 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4868 params.supported_rates_len =
4869 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4870 }
4871
4872 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4873 params.capability =
4874 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4875 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4876 }
4877
4878 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4879 params.ext_capab =
4880 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4881 params.ext_capab_len =
4882 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4883 }
4884
4885 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4886 return -EINVAL;
4887
4888 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4889 params.plink_action =
4890 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4891 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4892 return -EINVAL;
4893 }
4894
4895 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4896 params.plink_state =
4897 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4898 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4899 return -EINVAL;
4900 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4901 params.peer_aid = nla_get_u16(
4902 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4903 if (params.peer_aid > IEEE80211_MAX_AID)
4904 return -EINVAL;
4905 }
4906 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4907 }
4908
4909 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4910 enum nl80211_mesh_power_mode pm = nla_get_u32(
4911 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4912
4913 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4914 pm > NL80211_MESH_POWER_MAX)
4915 return -EINVAL;
4916
4917 params.local_pm = pm;
4918 }
4919
4920 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4921 params.opmode_notif_used = true;
4922 params.opmode_notif =
4923 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4924 }
4925
4926 /* Include parameters for TDLS peer (will check later) */
4927 err = nl80211_set_station_tdls(info, &params);
4928 if (err)
4929 return err;
4930
4931 params.vlan = get_vlan(info, rdev);
4932 if (IS_ERR(params.vlan))
4933 return PTR_ERR(params.vlan);
4934
4935 switch (dev->ieee80211_ptr->iftype) {
4936 case NL80211_IFTYPE_AP:
4937 case NL80211_IFTYPE_AP_VLAN:
4938 case NL80211_IFTYPE_P2P_GO:
4939 case NL80211_IFTYPE_P2P_CLIENT:
4940 case NL80211_IFTYPE_STATION:
4941 case NL80211_IFTYPE_ADHOC:
4942 case NL80211_IFTYPE_MESH_POINT:
4943 break;
4944 default:
4945 err = -EOPNOTSUPP;
4946 goto out_put_vlan;
4947 }
4948
4949 /* driver will call cfg80211_check_station_change() */
4950 err = rdev_change_station(rdev, dev, mac_addr, &params);
4951
4952 out_put_vlan:
4953 if (params.vlan)
4954 dev_put(params.vlan);
4955
4956 return err;
4957 }
4958
4959 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4960 {
4961 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4962 int err;
4963 struct net_device *dev = info->user_ptr[1];
4964 struct station_parameters params;
4965 u8 *mac_addr = NULL;
4966 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4967 BIT(NL80211_STA_FLAG_ASSOCIATED);
4968
4969 memset(&params, 0, sizeof(params));
4970
4971 if (!rdev->ops->add_station)
4972 return -EOPNOTSUPP;
4973
4974 if (!info->attrs[NL80211_ATTR_MAC])
4975 return -EINVAL;
4976
4977 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4978 return -EINVAL;
4979
4980 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4981 return -EINVAL;
4982
4983 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4984 !info->attrs[NL80211_ATTR_PEER_AID])
4985 return -EINVAL;
4986
4987 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4988 params.supported_rates =
4989 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4990 params.supported_rates_len =
4991 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4992 params.listen_interval =
4993 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4994
4995 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4996 u8 tmp;
4997
4998 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4999 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5000 return -EINVAL;
5001
5002 params.support_p2p_ps = tmp;
5003 } else {
5004 /*
5005 * if not specified, assume it's supported for P2P GO interface,
5006 * and is NOT supported for AP interface
5007 */
5008 params.support_p2p_ps =
5009 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5010 }
5011
5012 if (info->attrs[NL80211_ATTR_PEER_AID])
5013 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5014 else
5015 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5016 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5017 return -EINVAL;
5018
5019 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5020 params.capability =
5021 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5022 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5023 }
5024
5025 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5026 params.ext_capab =
5027 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5028 params.ext_capab_len =
5029 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5030 }
5031
5032 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5033 params.ht_capa =
5034 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5035
5036 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5037 params.vht_capa =
5038 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5039
5040 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5041 params.opmode_notif_used = true;
5042 params.opmode_notif =
5043 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5044 }
5045
5046 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5047 params.plink_action =
5048 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5049 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5050 return -EINVAL;
5051 }
5052
5053 err = nl80211_parse_sta_channel_info(info, &params);
5054 if (err)
5055 return err;
5056
5057 err = nl80211_parse_sta_wme(info, &params);
5058 if (err)
5059 return err;
5060
5061 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5062 return -EINVAL;
5063
5064 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5065 * as userspace might just pass through the capabilities from the IEs
5066 * directly, rather than enforcing this restriction and returning an
5067 * error in this case.
5068 */
5069 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5070 params.ht_capa = NULL;
5071 params.vht_capa = NULL;
5072 }
5073
5074 /* When you run into this, adjust the code below for the new flag */
5075 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5076
5077 switch (dev->ieee80211_ptr->iftype) {
5078 case NL80211_IFTYPE_AP:
5079 case NL80211_IFTYPE_AP_VLAN:
5080 case NL80211_IFTYPE_P2P_GO:
5081 /* ignore WME attributes if iface/sta is not capable */
5082 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5083 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5084 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5085
5086 /* TDLS peers cannot be added */
5087 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5088 info->attrs[NL80211_ATTR_PEER_AID])
5089 return -EINVAL;
5090 /* but don't bother the driver with it */
5091 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5092
5093 /* allow authenticated/associated only if driver handles it */
5094 if (!(rdev->wiphy.features &
5095 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5096 params.sta_flags_mask & auth_assoc)
5097 return -EINVAL;
5098
5099 /* Older userspace, or userspace wanting to be compatible with
5100 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5101 * and assoc flags in the mask, but assumes the station will be
5102 * added as associated anyway since this was the required driver
5103 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5104 * introduced.
5105 * In order to not bother drivers with this quirk in the API
5106 * set the flags in both the mask and set for new stations in
5107 * this case.
5108 */
5109 if (!(params.sta_flags_mask & auth_assoc)) {
5110 params.sta_flags_mask |= auth_assoc;
5111 params.sta_flags_set |= auth_assoc;
5112 }
5113
5114 /* must be last in here for error handling */
5115 params.vlan = get_vlan(info, rdev);
5116 if (IS_ERR(params.vlan))
5117 return PTR_ERR(params.vlan);
5118 break;
5119 case NL80211_IFTYPE_MESH_POINT:
5120 /* ignore uAPSD data */
5121 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5122
5123 /* associated is disallowed */
5124 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5125 return -EINVAL;
5126 /* TDLS peers cannot be added */
5127 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5128 info->attrs[NL80211_ATTR_PEER_AID])
5129 return -EINVAL;
5130 break;
5131 case NL80211_IFTYPE_STATION:
5132 case NL80211_IFTYPE_P2P_CLIENT:
5133 /* ignore uAPSD data */
5134 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5135
5136 /* these are disallowed */
5137 if (params.sta_flags_mask &
5138 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5139 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5140 return -EINVAL;
5141 /* Only TDLS peers can be added */
5142 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5143 return -EINVAL;
5144 /* Can only add if TDLS ... */
5145 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5146 return -EOPNOTSUPP;
5147 /* ... with external setup is supported */
5148 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5149 return -EOPNOTSUPP;
5150 /*
5151 * Older wpa_supplicant versions always mark the TDLS peer
5152 * as authorized, but it shouldn't yet be.
5153 */
5154 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5155 break;
5156 default:
5157 return -EOPNOTSUPP;
5158 }
5159
5160 /* be aware of params.vlan when changing code here */
5161
5162 err = rdev_add_station(rdev, dev, mac_addr, &params);
5163
5164 if (params.vlan)
5165 dev_put(params.vlan);
5166 return err;
5167 }
5168
5169 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5170 {
5171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5172 struct net_device *dev = info->user_ptr[1];
5173 struct station_del_parameters params;
5174
5175 memset(&params, 0, sizeof(params));
5176
5177 if (info->attrs[NL80211_ATTR_MAC])
5178 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5179
5180 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5181 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5182 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5183 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5184 return -EINVAL;
5185
5186 if (!rdev->ops->del_station)
5187 return -EOPNOTSUPP;
5188
5189 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5190 params.subtype =
5191 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5192 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5193 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5194 return -EINVAL;
5195 } else {
5196 /* Default to Deauthentication frame */
5197 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5198 }
5199
5200 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5201 params.reason_code =
5202 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5203 if (params.reason_code == 0)
5204 return -EINVAL; /* 0 is reserved */
5205 } else {
5206 /* Default to reason code 2 */
5207 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5208 }
5209
5210 return rdev_del_station(rdev, dev, &params);
5211 }
5212
5213 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5214 int flags, struct net_device *dev,
5215 u8 *dst, u8 *next_hop,
5216 struct mpath_info *pinfo)
5217 {
5218 void *hdr;
5219 struct nlattr *pinfoattr;
5220
5221 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5222 if (!hdr)
5223 return -1;
5224
5225 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5226 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5227 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5228 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5229 goto nla_put_failure;
5230
5231 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5232 if (!pinfoattr)
5233 goto nla_put_failure;
5234 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5235 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5236 pinfo->frame_qlen))
5237 goto nla_put_failure;
5238 if (((pinfo->filled & MPATH_INFO_SN) &&
5239 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5240 ((pinfo->filled & MPATH_INFO_METRIC) &&
5241 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5242 pinfo->metric)) ||
5243 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5244 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5245 pinfo->exptime)) ||
5246 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5247 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5248 pinfo->flags)) ||
5249 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5250 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5251 pinfo->discovery_timeout)) ||
5252 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5253 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5254 pinfo->discovery_retries)))
5255 goto nla_put_failure;
5256
5257 nla_nest_end(msg, pinfoattr);
5258
5259 genlmsg_end(msg, hdr);
5260 return 0;
5261
5262 nla_put_failure:
5263 genlmsg_cancel(msg, hdr);
5264 return -EMSGSIZE;
5265 }
5266
5267 static int nl80211_dump_mpath(struct sk_buff *skb,
5268 struct netlink_callback *cb)
5269 {
5270 struct mpath_info pinfo;
5271 struct cfg80211_registered_device *rdev;
5272 struct wireless_dev *wdev;
5273 u8 dst[ETH_ALEN];
5274 u8 next_hop[ETH_ALEN];
5275 int path_idx = cb->args[2];
5276 int err;
5277
5278 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5279 if (err)
5280 return err;
5281
5282 if (!rdev->ops->dump_mpath) {
5283 err = -EOPNOTSUPP;
5284 goto out_err;
5285 }
5286
5287 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5288 err = -EOPNOTSUPP;
5289 goto out_err;
5290 }
5291
5292 while (1) {
5293 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5294 next_hop, &pinfo);
5295 if (err == -ENOENT)
5296 break;
5297 if (err)
5298 goto out_err;
5299
5300 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5301 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5302 wdev->netdev, dst, next_hop,
5303 &pinfo) < 0)
5304 goto out;
5305
5306 path_idx++;
5307 }
5308
5309 out:
5310 cb->args[2] = path_idx;
5311 err = skb->len;
5312 out_err:
5313 nl80211_finish_wdev_dump(rdev);
5314 return err;
5315 }
5316
5317 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5318 {
5319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5320 int err;
5321 struct net_device *dev = info->user_ptr[1];
5322 struct mpath_info pinfo;
5323 struct sk_buff *msg;
5324 u8 *dst = NULL;
5325 u8 next_hop[ETH_ALEN];
5326
5327 memset(&pinfo, 0, sizeof(pinfo));
5328
5329 if (!info->attrs[NL80211_ATTR_MAC])
5330 return -EINVAL;
5331
5332 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5333
5334 if (!rdev->ops->get_mpath)
5335 return -EOPNOTSUPP;
5336
5337 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5338 return -EOPNOTSUPP;
5339
5340 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5341 if (err)
5342 return err;
5343
5344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5345 if (!msg)
5346 return -ENOMEM;
5347
5348 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5349 dev, dst, next_hop, &pinfo) < 0) {
5350 nlmsg_free(msg);
5351 return -ENOBUFS;
5352 }
5353
5354 return genlmsg_reply(msg, info);
5355 }
5356
5357 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5358 {
5359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5360 struct net_device *dev = info->user_ptr[1];
5361 u8 *dst = NULL;
5362 u8 *next_hop = NULL;
5363
5364 if (!info->attrs[NL80211_ATTR_MAC])
5365 return -EINVAL;
5366
5367 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5368 return -EINVAL;
5369
5370 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5371 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5372
5373 if (!rdev->ops->change_mpath)
5374 return -EOPNOTSUPP;
5375
5376 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5377 return -EOPNOTSUPP;
5378
5379 return rdev_change_mpath(rdev, dev, dst, next_hop);
5380 }
5381
5382 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5383 {
5384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5385 struct net_device *dev = info->user_ptr[1];
5386 u8 *dst = NULL;
5387 u8 *next_hop = NULL;
5388
5389 if (!info->attrs[NL80211_ATTR_MAC])
5390 return -EINVAL;
5391
5392 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5393 return -EINVAL;
5394
5395 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5396 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5397
5398 if (!rdev->ops->add_mpath)
5399 return -EOPNOTSUPP;
5400
5401 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5402 return -EOPNOTSUPP;
5403
5404 return rdev_add_mpath(rdev, dev, dst, next_hop);
5405 }
5406
5407 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5408 {
5409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5410 struct net_device *dev = info->user_ptr[1];
5411 u8 *dst = NULL;
5412
5413 if (info->attrs[NL80211_ATTR_MAC])
5414 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5415
5416 if (!rdev->ops->del_mpath)
5417 return -EOPNOTSUPP;
5418
5419 return rdev_del_mpath(rdev, dev, dst);
5420 }
5421
5422 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5423 {
5424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5425 int err;
5426 struct net_device *dev = info->user_ptr[1];
5427 struct mpath_info pinfo;
5428 struct sk_buff *msg;
5429 u8 *dst = NULL;
5430 u8 mpp[ETH_ALEN];
5431
5432 memset(&pinfo, 0, sizeof(pinfo));
5433
5434 if (!info->attrs[NL80211_ATTR_MAC])
5435 return -EINVAL;
5436
5437 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5438
5439 if (!rdev->ops->get_mpp)
5440 return -EOPNOTSUPP;
5441
5442 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5443 return -EOPNOTSUPP;
5444
5445 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5446 if (err)
5447 return err;
5448
5449 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5450 if (!msg)
5451 return -ENOMEM;
5452
5453 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5454 dev, dst, mpp, &pinfo) < 0) {
5455 nlmsg_free(msg);
5456 return -ENOBUFS;
5457 }
5458
5459 return genlmsg_reply(msg, info);
5460 }
5461
5462 static int nl80211_dump_mpp(struct sk_buff *skb,
5463 struct netlink_callback *cb)
5464 {
5465 struct mpath_info pinfo;
5466 struct cfg80211_registered_device *rdev;
5467 struct wireless_dev *wdev;
5468 u8 dst[ETH_ALEN];
5469 u8 mpp[ETH_ALEN];
5470 int path_idx = cb->args[2];
5471 int err;
5472
5473 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5474 if (err)
5475 return err;
5476
5477 if (!rdev->ops->dump_mpp) {
5478 err = -EOPNOTSUPP;
5479 goto out_err;
5480 }
5481
5482 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5483 err = -EOPNOTSUPP;
5484 goto out_err;
5485 }
5486
5487 while (1) {
5488 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5489 mpp, &pinfo);
5490 if (err == -ENOENT)
5491 break;
5492 if (err)
5493 goto out_err;
5494
5495 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5496 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5497 wdev->netdev, dst, mpp,
5498 &pinfo) < 0)
5499 goto out;
5500
5501 path_idx++;
5502 }
5503
5504 out:
5505 cb->args[2] = path_idx;
5506 err = skb->len;
5507 out_err:
5508 nl80211_finish_wdev_dump(rdev);
5509 return err;
5510 }
5511
5512 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5513 {
5514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5515 struct net_device *dev = info->user_ptr[1];
5516 struct wireless_dev *wdev = dev->ieee80211_ptr;
5517 struct bss_parameters params;
5518 int err;
5519
5520 memset(&params, 0, sizeof(params));
5521 /* default to not changing parameters */
5522 params.use_cts_prot = -1;
5523 params.use_short_preamble = -1;
5524 params.use_short_slot_time = -1;
5525 params.ap_isolate = -1;
5526 params.ht_opmode = -1;
5527 params.p2p_ctwindow = -1;
5528 params.p2p_opp_ps = -1;
5529
5530 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5531 params.use_cts_prot =
5532 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5533 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5534 params.use_short_preamble =
5535 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5536 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5537 params.use_short_slot_time =
5538 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5539 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5540 params.basic_rates =
5541 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5542 params.basic_rates_len =
5543 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5544 }
5545 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5546 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5547 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5548 params.ht_opmode =
5549 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5550
5551 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5552 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5553 return -EINVAL;
5554 params.p2p_ctwindow =
5555 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5556 if (params.p2p_ctwindow < 0)
5557 return -EINVAL;
5558 if (params.p2p_ctwindow != 0 &&
5559 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5560 return -EINVAL;
5561 }
5562
5563 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5564 u8 tmp;
5565
5566 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5567 return -EINVAL;
5568 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5569 if (tmp > 1)
5570 return -EINVAL;
5571 params.p2p_opp_ps = tmp;
5572 if (params.p2p_opp_ps &&
5573 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5574 return -EINVAL;
5575 }
5576
5577 if (!rdev->ops->change_bss)
5578 return -EOPNOTSUPP;
5579
5580 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5581 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5582 return -EOPNOTSUPP;
5583
5584 wdev_lock(wdev);
5585 err = rdev_change_bss(rdev, dev, &params);
5586 wdev_unlock(wdev);
5587
5588 return err;
5589 }
5590
5591 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5592 {
5593 char *data = NULL;
5594 bool is_indoor;
5595 enum nl80211_user_reg_hint_type user_reg_hint_type;
5596 u32 owner_nlportid;
5597
5598 /*
5599 * You should only get this when cfg80211 hasn't yet initialized
5600 * completely when built-in to the kernel right between the time
5601 * window between nl80211_init() and regulatory_init(), if that is
5602 * even possible.
5603 */
5604 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5605 return -EINPROGRESS;
5606
5607 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5608 user_reg_hint_type =
5609 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5610 else
5611 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5612
5613 switch (user_reg_hint_type) {
5614 case NL80211_USER_REG_HINT_USER:
5615 case NL80211_USER_REG_HINT_CELL_BASE:
5616 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5617 return -EINVAL;
5618
5619 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5620 return regulatory_hint_user(data, user_reg_hint_type);
5621 case NL80211_USER_REG_HINT_INDOOR:
5622 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5623 owner_nlportid = info->snd_portid;
5624 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5625 } else {
5626 owner_nlportid = 0;
5627 is_indoor = true;
5628 }
5629
5630 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5631 default:
5632 return -EINVAL;
5633 }
5634 }
5635
5636 static int nl80211_get_mesh_config(struct sk_buff *skb,
5637 struct genl_info *info)
5638 {
5639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5640 struct net_device *dev = info->user_ptr[1];
5641 struct wireless_dev *wdev = dev->ieee80211_ptr;
5642 struct mesh_config cur_params;
5643 int err = 0;
5644 void *hdr;
5645 struct nlattr *pinfoattr;
5646 struct sk_buff *msg;
5647
5648 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5649 return -EOPNOTSUPP;
5650
5651 if (!rdev->ops->get_mesh_config)
5652 return -EOPNOTSUPP;
5653
5654 wdev_lock(wdev);
5655 /* If not connected, get default parameters */
5656 if (!wdev->mesh_id_len)
5657 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5658 else
5659 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5660 wdev_unlock(wdev);
5661
5662 if (err)
5663 return err;
5664
5665 /* Draw up a netlink message to send back */
5666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5667 if (!msg)
5668 return -ENOMEM;
5669 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5670 NL80211_CMD_GET_MESH_CONFIG);
5671 if (!hdr)
5672 goto out;
5673 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5674 if (!pinfoattr)
5675 goto nla_put_failure;
5676 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5677 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5678 cur_params.dot11MeshRetryTimeout) ||
5679 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5680 cur_params.dot11MeshConfirmTimeout) ||
5681 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5682 cur_params.dot11MeshHoldingTimeout) ||
5683 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5684 cur_params.dot11MeshMaxPeerLinks) ||
5685 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5686 cur_params.dot11MeshMaxRetries) ||
5687 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5688 cur_params.dot11MeshTTL) ||
5689 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5690 cur_params.element_ttl) ||
5691 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5692 cur_params.auto_open_plinks) ||
5693 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5694 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5695 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5696 cur_params.dot11MeshHWMPmaxPREQretries) ||
5697 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5698 cur_params.path_refresh_time) ||
5699 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5700 cur_params.min_discovery_timeout) ||
5701 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5702 cur_params.dot11MeshHWMPactivePathTimeout) ||
5703 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5704 cur_params.dot11MeshHWMPpreqMinInterval) ||
5705 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5706 cur_params.dot11MeshHWMPperrMinInterval) ||
5707 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5708 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5709 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5710 cur_params.dot11MeshHWMPRootMode) ||
5711 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5712 cur_params.dot11MeshHWMPRannInterval) ||
5713 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5714 cur_params.dot11MeshGateAnnouncementProtocol) ||
5715 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5716 cur_params.dot11MeshForwarding) ||
5717 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5718 cur_params.rssi_threshold) ||
5719 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5720 cur_params.ht_opmode) ||
5721 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5722 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5723 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5724 cur_params.dot11MeshHWMProotInterval) ||
5725 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5726 cur_params.dot11MeshHWMPconfirmationInterval) ||
5727 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5728 cur_params.power_mode) ||
5729 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5730 cur_params.dot11MeshAwakeWindowDuration) ||
5731 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5732 cur_params.plink_timeout))
5733 goto nla_put_failure;
5734 nla_nest_end(msg, pinfoattr);
5735 genlmsg_end(msg, hdr);
5736 return genlmsg_reply(msg, info);
5737
5738 nla_put_failure:
5739 genlmsg_cancel(msg, hdr);
5740 out:
5741 nlmsg_free(msg);
5742 return -ENOBUFS;
5743 }
5744
5745 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5746 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5747 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5748 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5749 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5750 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5751 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5752 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5753 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5754 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5755 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5756 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5757 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5758 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5759 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5760 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5761 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5762 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5763 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5764 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5765 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5766 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5767 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5768 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5769 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5770 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5771 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5772 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5773 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5774 };
5775
5776 static const struct nla_policy
5777 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5778 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5779 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5780 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5781 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5782 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5783 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5784 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5785 .len = IEEE80211_MAX_DATA_LEN },
5786 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5787 };
5788
5789 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5790 {
5791 u8 val = nla_get_u8(nla);
5792 if (val < min || val > max)
5793 return -EINVAL;
5794 *out = val;
5795 return 0;
5796 }
5797
5798 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5799 {
5800 u8 val = nla_get_u8(nla);
5801 if (val < min || val > max)
5802 return -EINVAL;
5803 *out = val;
5804 return 0;
5805 }
5806
5807 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5808 {
5809 u16 val = nla_get_u16(nla);
5810 if (val < min || val > max)
5811 return -EINVAL;
5812 *out = val;
5813 return 0;
5814 }
5815
5816 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5817 {
5818 u32 val = nla_get_u32(nla);
5819 if (val < min || val > max)
5820 return -EINVAL;
5821 *out = val;
5822 return 0;
5823 }
5824
5825 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5826 {
5827 s32 val = nla_get_s32(nla);
5828 if (val < min || val > max)
5829 return -EINVAL;
5830 *out = val;
5831 return 0;
5832 }
5833
5834 static int nl80211_check_power_mode(const struct nlattr *nla,
5835 enum nl80211_mesh_power_mode min,
5836 enum nl80211_mesh_power_mode max,
5837 enum nl80211_mesh_power_mode *out)
5838 {
5839 u32 val = nla_get_u32(nla);
5840 if (val < min || val > max)
5841 return -EINVAL;
5842 *out = val;
5843 return 0;
5844 }
5845
5846 static int nl80211_parse_mesh_config(struct genl_info *info,
5847 struct mesh_config *cfg,
5848 u32 *mask_out)
5849 {
5850 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5851 u32 mask = 0;
5852 u16 ht_opmode;
5853
5854 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5855 do { \
5856 if (tb[attr]) { \
5857 if (fn(tb[attr], min, max, &cfg->param)) \
5858 return -EINVAL; \
5859 mask |= (1 << (attr - 1)); \
5860 } \
5861 } while (0)
5862
5863 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5864 return -EINVAL;
5865 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5866 info->attrs[NL80211_ATTR_MESH_CONFIG],
5867 nl80211_meshconf_params_policy))
5868 return -EINVAL;
5869
5870 /* This makes sure that there aren't more than 32 mesh config
5871 * parameters (otherwise our bitfield scheme would not work.) */
5872 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5873
5874 /* Fill in the params struct */
5875 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5876 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5877 nl80211_check_u16);
5878 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5879 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5880 nl80211_check_u16);
5881 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5882 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5883 nl80211_check_u16);
5884 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5885 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5886 nl80211_check_u16);
5887 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5888 mask, NL80211_MESHCONF_MAX_RETRIES,
5889 nl80211_check_u8);
5890 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5891 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5892 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5893 mask, NL80211_MESHCONF_ELEMENT_TTL,
5894 nl80211_check_u8);
5895 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5896 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5897 nl80211_check_bool);
5898 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5899 1, 255, mask,
5900 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5901 nl80211_check_u32);
5902 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5903 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5904 nl80211_check_u8);
5905 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5906 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5907 nl80211_check_u32);
5908 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5909 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5910 nl80211_check_u16);
5911 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5912 1, 65535, mask,
5913 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5914 nl80211_check_u32);
5915 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5916 1, 65535, mask,
5917 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5918 nl80211_check_u16);
5919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5920 1, 65535, mask,
5921 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5922 nl80211_check_u16);
5923 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5924 dot11MeshHWMPnetDiameterTraversalTime,
5925 1, 65535, mask,
5926 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5927 nl80211_check_u16);
5928 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5929 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5930 nl80211_check_u8);
5931 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5932 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5933 nl80211_check_u16);
5934 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5935 dot11MeshGateAnnouncementProtocol, 0, 1,
5936 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5937 nl80211_check_bool);
5938 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5939 mask, NL80211_MESHCONF_FORWARDING,
5940 nl80211_check_bool);
5941 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5942 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5943 nl80211_check_s32);
5944 /*
5945 * Check HT operation mode based on
5946 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5947 */
5948 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5949 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5950
5951 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5952 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5953 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5954 return -EINVAL;
5955
5956 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5957 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5958 return -EINVAL;
5959
5960 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5961 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5962 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5963 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5964 return -EINVAL;
5965 break;
5966 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5967 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5968 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5969 return -EINVAL;
5970 break;
5971 }
5972 cfg->ht_opmode = ht_opmode;
5973 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
5974 }
5975 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5976 1, 65535, mask,
5977 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5978 nl80211_check_u32);
5979 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5980 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5981 nl80211_check_u16);
5982 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5983 dot11MeshHWMPconfirmationInterval,
5984 1, 65535, mask,
5985 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5986 nl80211_check_u16);
5987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5988 NL80211_MESH_POWER_ACTIVE,
5989 NL80211_MESH_POWER_MAX,
5990 mask, NL80211_MESHCONF_POWER_MODE,
5991 nl80211_check_power_mode);
5992 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5993 0, 65535, mask,
5994 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5995 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5996 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5997 nl80211_check_u32);
5998 if (mask_out)
5999 *mask_out = mask;
6000
6001 return 0;
6002
6003 #undef FILL_IN_MESH_PARAM_IF_SET
6004 }
6005
6006 static int nl80211_parse_mesh_setup(struct genl_info *info,
6007 struct mesh_setup *setup)
6008 {
6009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6010 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6011
6012 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6013 return -EINVAL;
6014 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6015 info->attrs[NL80211_ATTR_MESH_SETUP],
6016 nl80211_mesh_setup_params_policy))
6017 return -EINVAL;
6018
6019 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6020 setup->sync_method =
6021 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6022 IEEE80211_SYNC_METHOD_VENDOR :
6023 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6024
6025 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6026 setup->path_sel_proto =
6027 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6028 IEEE80211_PATH_PROTOCOL_VENDOR :
6029 IEEE80211_PATH_PROTOCOL_HWMP;
6030
6031 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6032 setup->path_metric =
6033 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6034 IEEE80211_PATH_METRIC_VENDOR :
6035 IEEE80211_PATH_METRIC_AIRTIME;
6036
6037 if (tb[NL80211_MESH_SETUP_IE]) {
6038 struct nlattr *ieattr =
6039 tb[NL80211_MESH_SETUP_IE];
6040 if (!is_valid_ie_attr(ieattr))
6041 return -EINVAL;
6042 setup->ie = nla_data(ieattr);
6043 setup->ie_len = nla_len(ieattr);
6044 }
6045 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6046 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6047 return -EINVAL;
6048 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6049 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6050 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6051 if (setup->is_secure)
6052 setup->user_mpm = true;
6053
6054 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6055 if (!setup->user_mpm)
6056 return -EINVAL;
6057 setup->auth_id =
6058 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6059 }
6060
6061 return 0;
6062 }
6063
6064 static int nl80211_update_mesh_config(struct sk_buff *skb,
6065 struct genl_info *info)
6066 {
6067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068 struct net_device *dev = info->user_ptr[1];
6069 struct wireless_dev *wdev = dev->ieee80211_ptr;
6070 struct mesh_config cfg;
6071 u32 mask;
6072 int err;
6073
6074 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6075 return -EOPNOTSUPP;
6076
6077 if (!rdev->ops->update_mesh_config)
6078 return -EOPNOTSUPP;
6079
6080 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6081 if (err)
6082 return err;
6083
6084 wdev_lock(wdev);
6085 if (!wdev->mesh_id_len)
6086 err = -ENOLINK;
6087
6088 if (!err)
6089 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6090
6091 wdev_unlock(wdev);
6092
6093 return err;
6094 }
6095
6096 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6097 struct sk_buff *msg)
6098 {
6099 struct nlattr *nl_reg_rules;
6100 unsigned int i;
6101
6102 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6103 (regdom->dfs_region &&
6104 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6105 goto nla_put_failure;
6106
6107 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6108 if (!nl_reg_rules)
6109 goto nla_put_failure;
6110
6111 for (i = 0; i < regdom->n_reg_rules; i++) {
6112 struct nlattr *nl_reg_rule;
6113 const struct ieee80211_reg_rule *reg_rule;
6114 const struct ieee80211_freq_range *freq_range;
6115 const struct ieee80211_power_rule *power_rule;
6116 unsigned int max_bandwidth_khz;
6117
6118 reg_rule = &regdom->reg_rules[i];
6119 freq_range = &reg_rule->freq_range;
6120 power_rule = &reg_rule->power_rule;
6121
6122 nl_reg_rule = nla_nest_start(msg, i);
6123 if (!nl_reg_rule)
6124 goto nla_put_failure;
6125
6126 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6127 if (!max_bandwidth_khz)
6128 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6129 reg_rule);
6130
6131 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6132 reg_rule->flags) ||
6133 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6134 freq_range->start_freq_khz) ||
6135 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6136 freq_range->end_freq_khz) ||
6137 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6138 max_bandwidth_khz) ||
6139 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6140 power_rule->max_antenna_gain) ||
6141 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6142 power_rule->max_eirp) ||
6143 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6144 reg_rule->dfs_cac_ms))
6145 goto nla_put_failure;
6146
6147 nla_nest_end(msg, nl_reg_rule);
6148 }
6149
6150 nla_nest_end(msg, nl_reg_rules);
6151 return 0;
6152
6153 nla_put_failure:
6154 return -EMSGSIZE;
6155 }
6156
6157 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6158 {
6159 const struct ieee80211_regdomain *regdom = NULL;
6160 struct cfg80211_registered_device *rdev;
6161 struct wiphy *wiphy = NULL;
6162 struct sk_buff *msg;
6163 void *hdr;
6164
6165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6166 if (!msg)
6167 return -ENOBUFS;
6168
6169 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6170 NL80211_CMD_GET_REG);
6171 if (!hdr)
6172 goto put_failure;
6173
6174 if (info->attrs[NL80211_ATTR_WIPHY]) {
6175 bool self_managed;
6176
6177 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6178 if (IS_ERR(rdev)) {
6179 nlmsg_free(msg);
6180 return PTR_ERR(rdev);
6181 }
6182
6183 wiphy = &rdev->wiphy;
6184 self_managed = wiphy->regulatory_flags &
6185 REGULATORY_WIPHY_SELF_MANAGED;
6186 regdom = get_wiphy_regdom(wiphy);
6187
6188 /* a self-managed-reg device must have a private regdom */
6189 if (WARN_ON(!regdom && self_managed)) {
6190 nlmsg_free(msg);
6191 return -EINVAL;
6192 }
6193
6194 if (regdom &&
6195 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6196 goto nla_put_failure;
6197 }
6198
6199 if (!wiphy && reg_last_request_cell_base() &&
6200 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6201 NL80211_USER_REG_HINT_CELL_BASE))
6202 goto nla_put_failure;
6203
6204 rcu_read_lock();
6205
6206 if (!regdom)
6207 regdom = rcu_dereference(cfg80211_regdomain);
6208
6209 if (nl80211_put_regdom(regdom, msg))
6210 goto nla_put_failure_rcu;
6211
6212 rcu_read_unlock();
6213
6214 genlmsg_end(msg, hdr);
6215 return genlmsg_reply(msg, info);
6216
6217 nla_put_failure_rcu:
6218 rcu_read_unlock();
6219 nla_put_failure:
6220 genlmsg_cancel(msg, hdr);
6221 put_failure:
6222 nlmsg_free(msg);
6223 return -EMSGSIZE;
6224 }
6225
6226 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6227 u32 seq, int flags, struct wiphy *wiphy,
6228 const struct ieee80211_regdomain *regdom)
6229 {
6230 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6231 NL80211_CMD_GET_REG);
6232
6233 if (!hdr)
6234 return -1;
6235
6236 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6237
6238 if (nl80211_put_regdom(regdom, msg))
6239 goto nla_put_failure;
6240
6241 if (!wiphy && reg_last_request_cell_base() &&
6242 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6243 NL80211_USER_REG_HINT_CELL_BASE))
6244 goto nla_put_failure;
6245
6246 if (wiphy &&
6247 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6248 goto nla_put_failure;
6249
6250 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6251 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6252 goto nla_put_failure;
6253
6254 genlmsg_end(msg, hdr);
6255 return 0;
6256
6257 nla_put_failure:
6258 genlmsg_cancel(msg, hdr);
6259 return -EMSGSIZE;
6260 }
6261
6262 static int nl80211_get_reg_dump(struct sk_buff *skb,
6263 struct netlink_callback *cb)
6264 {
6265 const struct ieee80211_regdomain *regdom = NULL;
6266 struct cfg80211_registered_device *rdev;
6267 int err, reg_idx, start = cb->args[2];
6268
6269 rtnl_lock();
6270
6271 if (cfg80211_regdomain && start == 0) {
6272 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6273 NLM_F_MULTI, NULL,
6274 rtnl_dereference(cfg80211_regdomain));
6275 if (err < 0)
6276 goto out_err;
6277 }
6278
6279 /* the global regdom is idx 0 */
6280 reg_idx = 1;
6281 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6282 regdom = get_wiphy_regdom(&rdev->wiphy);
6283 if (!regdom)
6284 continue;
6285
6286 if (++reg_idx <= start)
6287 continue;
6288
6289 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6290 NLM_F_MULTI, &rdev->wiphy, regdom);
6291 if (err < 0) {
6292 reg_idx--;
6293 break;
6294 }
6295 }
6296
6297 cb->args[2] = reg_idx;
6298 err = skb->len;
6299 out_err:
6300 rtnl_unlock();
6301 return err;
6302 }
6303
6304 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6305 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6306 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6307 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6308 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6309 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6310 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6311 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6312 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6313 };
6314
6315 static int parse_reg_rule(struct nlattr *tb[],
6316 struct ieee80211_reg_rule *reg_rule)
6317 {
6318 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6319 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6320
6321 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6322 return -EINVAL;
6323 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6324 return -EINVAL;
6325 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6326 return -EINVAL;
6327 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6328 return -EINVAL;
6329 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6330 return -EINVAL;
6331
6332 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6333
6334 freq_range->start_freq_khz =
6335 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6336 freq_range->end_freq_khz =
6337 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6338 freq_range->max_bandwidth_khz =
6339 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6340
6341 power_rule->max_eirp =
6342 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6343
6344 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6345 power_rule->max_antenna_gain =
6346 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6347
6348 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6349 reg_rule->dfs_cac_ms =
6350 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6351
6352 return 0;
6353 }
6354
6355 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6356 {
6357 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6358 struct nlattr *nl_reg_rule;
6359 char *alpha2;
6360 int rem_reg_rules, r;
6361 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6362 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6363 struct ieee80211_regdomain *rd;
6364
6365 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6366 return -EINVAL;
6367
6368 if (!info->attrs[NL80211_ATTR_REG_RULES])
6369 return -EINVAL;
6370
6371 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6372
6373 if (info->attrs[NL80211_ATTR_DFS_REGION])
6374 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6375
6376 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6377 rem_reg_rules) {
6378 num_rules++;
6379 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6380 return -EINVAL;
6381 }
6382
6383 if (!reg_is_valid_request(alpha2))
6384 return -EINVAL;
6385
6386 size_of_regd = sizeof(struct ieee80211_regdomain) +
6387 num_rules * sizeof(struct ieee80211_reg_rule);
6388
6389 rd = kzalloc(size_of_regd, GFP_KERNEL);
6390 if (!rd)
6391 return -ENOMEM;
6392
6393 rd->n_reg_rules = num_rules;
6394 rd->alpha2[0] = alpha2[0];
6395 rd->alpha2[1] = alpha2[1];
6396
6397 /*
6398 * Disable DFS master mode if the DFS region was
6399 * not supported or known on this kernel.
6400 */
6401 if (reg_supported_dfs_region(dfs_region))
6402 rd->dfs_region = dfs_region;
6403
6404 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6405 rem_reg_rules) {
6406 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6407 nl_reg_rule, reg_rule_policy);
6408 if (r)
6409 goto bad_reg;
6410 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6411 if (r)
6412 goto bad_reg;
6413
6414 rule_idx++;
6415
6416 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6417 r = -EINVAL;
6418 goto bad_reg;
6419 }
6420 }
6421
6422 /* set_regdom takes ownership of rd */
6423 return set_regdom(rd, REGD_SOURCE_CRDA);
6424 bad_reg:
6425 kfree(rd);
6426 return r;
6427 }
6428 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6429
6430 static int validate_scan_freqs(struct nlattr *freqs)
6431 {
6432 struct nlattr *attr1, *attr2;
6433 int n_channels = 0, tmp1, tmp2;
6434
6435 nla_for_each_nested(attr1, freqs, tmp1) {
6436 n_channels++;
6437 /*
6438 * Some hardware has a limited channel list for
6439 * scanning, and it is pretty much nonsensical
6440 * to scan for a channel twice, so disallow that
6441 * and don't require drivers to check that the
6442 * channel list they get isn't longer than what
6443 * they can scan, as long as they can scan all
6444 * the channels they registered at once.
6445 */
6446 nla_for_each_nested(attr2, freqs, tmp2)
6447 if (attr1 != attr2 &&
6448 nla_get_u32(attr1) == nla_get_u32(attr2))
6449 return 0;
6450 }
6451
6452 return n_channels;
6453 }
6454
6455 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6456 {
6457 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6458 }
6459
6460 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6461 struct cfg80211_bss_selection *bss_select)
6462 {
6463 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6464 struct nlattr *nest;
6465 int err;
6466 bool found = false;
6467 int i;
6468
6469 /* only process one nested attribute */
6470 nest = nla_data(nla);
6471 if (!nla_ok(nest, nla_len(nest)))
6472 return -EINVAL;
6473
6474 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6475 nl80211_bss_select_policy);
6476 if (err)
6477 return err;
6478
6479 /* only one attribute may be given */
6480 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6481 if (attr[i]) {
6482 if (found)
6483 return -EINVAL;
6484 found = true;
6485 }
6486 }
6487
6488 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6489
6490 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6491 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6492
6493 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6494 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6495 bss_select->param.band_pref =
6496 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6497 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6498 return -EINVAL;
6499 }
6500
6501 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6502 struct nl80211_bss_select_rssi_adjust *adj_param;
6503
6504 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6505 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6506 bss_select->param.adjust.band = adj_param->band;
6507 bss_select->param.adjust.delta = adj_param->delta;
6508 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6509 return -EINVAL;
6510 }
6511
6512 /* user-space did not provide behaviour attribute */
6513 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6514 return -EINVAL;
6515
6516 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6517 return -EINVAL;
6518
6519 return 0;
6520 }
6521
6522 static int nl80211_parse_random_mac(struct nlattr **attrs,
6523 u8 *mac_addr, u8 *mac_addr_mask)
6524 {
6525 int i;
6526
6527 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6528 eth_zero_addr(mac_addr);
6529 eth_zero_addr(mac_addr_mask);
6530 mac_addr[0] = 0x2;
6531 mac_addr_mask[0] = 0x3;
6532
6533 return 0;
6534 }
6535
6536 /* need both or none */
6537 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6538 return -EINVAL;
6539
6540 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6541 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6542
6543 /* don't allow or configure an mcast address */
6544 if (!is_multicast_ether_addr(mac_addr_mask) ||
6545 is_multicast_ether_addr(mac_addr))
6546 return -EINVAL;
6547
6548 /*
6549 * allow users to pass a MAC address that has bits set outside
6550 * of the mask, but don't bother drivers with having to deal
6551 * with such bits
6552 */
6553 for (i = 0; i < ETH_ALEN; i++)
6554 mac_addr[i] &= mac_addr_mask[i];
6555
6556 return 0;
6557 }
6558
6559 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6560 {
6561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6562 struct wireless_dev *wdev = info->user_ptr[1];
6563 struct cfg80211_scan_request *request;
6564 struct nlattr *attr;
6565 struct wiphy *wiphy;
6566 int err, tmp, n_ssids = 0, n_channels, i;
6567 size_t ie_len;
6568
6569 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6570 return -EINVAL;
6571
6572 wiphy = &rdev->wiphy;
6573
6574 if (wdev->iftype == NL80211_IFTYPE_NAN)
6575 return -EOPNOTSUPP;
6576
6577 if (!rdev->ops->scan)
6578 return -EOPNOTSUPP;
6579
6580 if (rdev->scan_req || rdev->scan_msg) {
6581 err = -EBUSY;
6582 goto unlock;
6583 }
6584
6585 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6586 n_channels = validate_scan_freqs(
6587 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6588 if (!n_channels) {
6589 err = -EINVAL;
6590 goto unlock;
6591 }
6592 } else {
6593 n_channels = ieee80211_get_num_supported_channels(wiphy);
6594 }
6595
6596 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6597 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6598 n_ssids++;
6599
6600 if (n_ssids > wiphy->max_scan_ssids) {
6601 err = -EINVAL;
6602 goto unlock;
6603 }
6604
6605 if (info->attrs[NL80211_ATTR_IE])
6606 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6607 else
6608 ie_len = 0;
6609
6610 if (ie_len > wiphy->max_scan_ie_len) {
6611 err = -EINVAL;
6612 goto unlock;
6613 }
6614
6615 request = kzalloc(sizeof(*request)
6616 + sizeof(*request->ssids) * n_ssids
6617 + sizeof(*request->channels) * n_channels
6618 + ie_len, GFP_KERNEL);
6619 if (!request) {
6620 err = -ENOMEM;
6621 goto unlock;
6622 }
6623
6624 if (n_ssids)
6625 request->ssids = (void *)&request->channels[n_channels];
6626 request->n_ssids = n_ssids;
6627 if (ie_len) {
6628 if (n_ssids)
6629 request->ie = (void *)(request->ssids + n_ssids);
6630 else
6631 request->ie = (void *)(request->channels + n_channels);
6632 }
6633
6634 i = 0;
6635 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6636 /* user specified, bail out if channel not found */
6637 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6638 struct ieee80211_channel *chan;
6639
6640 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6641
6642 if (!chan) {
6643 err = -EINVAL;
6644 goto out_free;
6645 }
6646
6647 /* ignore disabled channels */
6648 if (chan->flags & IEEE80211_CHAN_DISABLED)
6649 continue;
6650
6651 request->channels[i] = chan;
6652 i++;
6653 }
6654 } else {
6655 enum nl80211_band band;
6656
6657 /* all channels */
6658 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6659 int j;
6660
6661 if (!wiphy->bands[band])
6662 continue;
6663 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6664 struct ieee80211_channel *chan;
6665
6666 chan = &wiphy->bands[band]->channels[j];
6667
6668 if (chan->flags & IEEE80211_CHAN_DISABLED)
6669 continue;
6670
6671 request->channels[i] = chan;
6672 i++;
6673 }
6674 }
6675 }
6676
6677 if (!i) {
6678 err = -EINVAL;
6679 goto out_free;
6680 }
6681
6682 request->n_channels = i;
6683
6684 i = 0;
6685 if (n_ssids) {
6686 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6687 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6688 err = -EINVAL;
6689 goto out_free;
6690 }
6691 request->ssids[i].ssid_len = nla_len(attr);
6692 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6693 i++;
6694 }
6695 }
6696
6697 if (info->attrs[NL80211_ATTR_IE]) {
6698 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6699 memcpy((void *)request->ie,
6700 nla_data(info->attrs[NL80211_ATTR_IE]),
6701 request->ie_len);
6702 }
6703
6704 for (i = 0; i < NUM_NL80211_BANDS; i++)
6705 if (wiphy->bands[i])
6706 request->rates[i] =
6707 (1 << wiphy->bands[i]->n_bitrates) - 1;
6708
6709 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6710 nla_for_each_nested(attr,
6711 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6712 tmp) {
6713 enum nl80211_band band = nla_type(attr);
6714
6715 if (band < 0 || band >= NUM_NL80211_BANDS) {
6716 err = -EINVAL;
6717 goto out_free;
6718 }
6719
6720 if (!wiphy->bands[band])
6721 continue;
6722
6723 err = ieee80211_get_ratemask(wiphy->bands[band],
6724 nla_data(attr),
6725 nla_len(attr),
6726 &request->rates[band]);
6727 if (err)
6728 goto out_free;
6729 }
6730 }
6731
6732 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6733 if (!wiphy_ext_feature_isset(wiphy,
6734 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6735 err = -EOPNOTSUPP;
6736 goto out_free;
6737 }
6738
6739 request->duration =
6740 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6741 request->duration_mandatory =
6742 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6743 }
6744
6745 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6746 request->flags = nla_get_u32(
6747 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6748 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6749 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6750 err = -EOPNOTSUPP;
6751 goto out_free;
6752 }
6753
6754 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6755 if (!(wiphy->features &
6756 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6757 err = -EOPNOTSUPP;
6758 goto out_free;
6759 }
6760
6761 if (wdev->current_bss) {
6762 err = -EOPNOTSUPP;
6763 goto out_free;
6764 }
6765
6766 err = nl80211_parse_random_mac(info->attrs,
6767 request->mac_addr,
6768 request->mac_addr_mask);
6769 if (err)
6770 goto out_free;
6771 }
6772 }
6773
6774 request->no_cck =
6775 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6776
6777 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6778 * BSSID to scan for. This was problematic because that same attribute
6779 * was already used for another purpose (local random MAC address). The
6780 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6781 * compatibility with older userspace components, also use the
6782 * NL80211_ATTR_MAC value here if it can be determined to be used for
6783 * the specific BSSID use case instead of the random MAC address
6784 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6785 */
6786 if (info->attrs[NL80211_ATTR_BSSID])
6787 memcpy(request->bssid,
6788 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6789 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6790 info->attrs[NL80211_ATTR_MAC])
6791 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6792 ETH_ALEN);
6793 else
6794 eth_broadcast_addr(request->bssid);
6795
6796 request->wdev = wdev;
6797 request->wiphy = &rdev->wiphy;
6798 request->scan_start = jiffies;
6799
6800 rdev->scan_req = request;
6801 err = rdev_scan(rdev, request);
6802
6803 if (!err) {
6804 nl80211_send_scan_start(rdev, wdev);
6805 if (wdev->netdev)
6806 dev_hold(wdev->netdev);
6807 } else {
6808 out_free:
6809 rdev->scan_req = NULL;
6810 kfree(request);
6811 }
6812
6813 unlock:
6814 return err;
6815 }
6816
6817 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6818 {
6819 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6820 struct wireless_dev *wdev = info->user_ptr[1];
6821
6822 if (!rdev->ops->abort_scan)
6823 return -EOPNOTSUPP;
6824
6825 if (rdev->scan_msg)
6826 return 0;
6827
6828 if (!rdev->scan_req)
6829 return -ENOENT;
6830
6831 rdev_abort_scan(rdev, wdev);
6832 return 0;
6833 }
6834
6835 static int
6836 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6837 struct cfg80211_sched_scan_request *request,
6838 struct nlattr **attrs)
6839 {
6840 int tmp, err, i = 0;
6841 struct nlattr *attr;
6842
6843 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6844 u32 interval;
6845
6846 /*
6847 * If scan plans are not specified,
6848 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6849 * case one scan plan will be set with the specified scan
6850 * interval and infinite number of iterations.
6851 */
6852 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6853 if (!interval)
6854 return -EINVAL;
6855
6856 request->scan_plans[0].interval =
6857 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6858 if (!request->scan_plans[0].interval)
6859 return -EINVAL;
6860
6861 if (request->scan_plans[0].interval >
6862 wiphy->max_sched_scan_plan_interval)
6863 request->scan_plans[0].interval =
6864 wiphy->max_sched_scan_plan_interval;
6865
6866 return 0;
6867 }
6868
6869 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6870 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6871
6872 if (WARN_ON(i >= n_plans))
6873 return -EINVAL;
6874
6875 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6876 attr, nl80211_plan_policy);
6877 if (err)
6878 return err;
6879
6880 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6881 return -EINVAL;
6882
6883 request->scan_plans[i].interval =
6884 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6885 if (!request->scan_plans[i].interval ||
6886 request->scan_plans[i].interval >
6887 wiphy->max_sched_scan_plan_interval)
6888 return -EINVAL;
6889
6890 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6891 request->scan_plans[i].iterations =
6892 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6893 if (!request->scan_plans[i].iterations ||
6894 (request->scan_plans[i].iterations >
6895 wiphy->max_sched_scan_plan_iterations))
6896 return -EINVAL;
6897 } else if (i < n_plans - 1) {
6898 /*
6899 * All scan plans but the last one must specify
6900 * a finite number of iterations
6901 */
6902 return -EINVAL;
6903 }
6904
6905 i++;
6906 }
6907
6908 /*
6909 * The last scan plan must not specify the number of
6910 * iterations, it is supposed to run infinitely
6911 */
6912 if (request->scan_plans[n_plans - 1].iterations)
6913 return -EINVAL;
6914
6915 return 0;
6916 }
6917
6918 static struct cfg80211_sched_scan_request *
6919 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6920 struct nlattr **attrs, int max_match_sets)
6921 {
6922 struct cfg80211_sched_scan_request *request;
6923 struct nlattr *attr;
6924 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6925 enum nl80211_band band;
6926 size_t ie_len;
6927 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6928 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6929
6930 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6931 return ERR_PTR(-EINVAL);
6932
6933 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6934 n_channels = validate_scan_freqs(
6935 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6936 if (!n_channels)
6937 return ERR_PTR(-EINVAL);
6938 } else {
6939 n_channels = ieee80211_get_num_supported_channels(wiphy);
6940 }
6941
6942 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6943 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6944 tmp)
6945 n_ssids++;
6946
6947 if (n_ssids > wiphy->max_sched_scan_ssids)
6948 return ERR_PTR(-EINVAL);
6949
6950 /*
6951 * First, count the number of 'real' matchsets. Due to an issue with
6952 * the old implementation, matchsets containing only the RSSI attribute
6953 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6954 * RSSI for all matchsets, rather than their own matchset for reporting
6955 * all APs with a strong RSSI. This is needed to be compatible with
6956 * older userspace that treated a matchset with only the RSSI as the
6957 * global RSSI for all other matchsets - if there are other matchsets.
6958 */
6959 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6960 nla_for_each_nested(attr,
6961 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6962 tmp) {
6963 struct nlattr *rssi;
6964
6965 err = nla_parse_nested(tb,
6966 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6967 attr, nl80211_match_policy);
6968 if (err)
6969 return ERR_PTR(err);
6970 /* add other standalone attributes here */
6971 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6972 n_match_sets++;
6973 continue;
6974 }
6975 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6976 if (rssi)
6977 default_match_rssi = nla_get_s32(rssi);
6978 }
6979 }
6980
6981 /* However, if there's no other matchset, add the RSSI one */
6982 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6983 n_match_sets = 1;
6984
6985 if (n_match_sets > max_match_sets)
6986 return ERR_PTR(-EINVAL);
6987
6988 if (attrs[NL80211_ATTR_IE])
6989 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6990 else
6991 ie_len = 0;
6992
6993 if (ie_len > wiphy->max_sched_scan_ie_len)
6994 return ERR_PTR(-EINVAL);
6995
6996 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6997 /*
6998 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6999 * each scan plan already specifies its own interval
7000 */
7001 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7002 return ERR_PTR(-EINVAL);
7003
7004 nla_for_each_nested(attr,
7005 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7006 n_plans++;
7007 } else {
7008 /*
7009 * The scan interval attribute is kept for backward
7010 * compatibility. If no scan plans are specified and sched scan
7011 * interval is specified, one scan plan will be set with this
7012 * scan interval and infinite number of iterations.
7013 */
7014 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7015 return ERR_PTR(-EINVAL);
7016
7017 n_plans = 1;
7018 }
7019
7020 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7021 return ERR_PTR(-EINVAL);
7022
7023 if (!wiphy_ext_feature_isset(
7024 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7025 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7026 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7027 return ERR_PTR(-EINVAL);
7028
7029 request = kzalloc(sizeof(*request)
7030 + sizeof(*request->ssids) * n_ssids
7031 + sizeof(*request->match_sets) * n_match_sets
7032 + sizeof(*request->scan_plans) * n_plans
7033 + sizeof(*request->channels) * n_channels
7034 + ie_len, GFP_KERNEL);
7035 if (!request)
7036 return ERR_PTR(-ENOMEM);
7037
7038 if (n_ssids)
7039 request->ssids = (void *)&request->channels[n_channels];
7040 request->n_ssids = n_ssids;
7041 if (ie_len) {
7042 if (n_ssids)
7043 request->ie = (void *)(request->ssids + n_ssids);
7044 else
7045 request->ie = (void *)(request->channels + n_channels);
7046 }
7047
7048 if (n_match_sets) {
7049 if (request->ie)
7050 request->match_sets = (void *)(request->ie + ie_len);
7051 else if (n_ssids)
7052 request->match_sets =
7053 (void *)(request->ssids + n_ssids);
7054 else
7055 request->match_sets =
7056 (void *)(request->channels + n_channels);
7057 }
7058 request->n_match_sets = n_match_sets;
7059
7060 if (n_match_sets)
7061 request->scan_plans = (void *)(request->match_sets +
7062 n_match_sets);
7063 else if (request->ie)
7064 request->scan_plans = (void *)(request->ie + ie_len);
7065 else if (n_ssids)
7066 request->scan_plans = (void *)(request->ssids + n_ssids);
7067 else
7068 request->scan_plans = (void *)(request->channels + n_channels);
7069
7070 request->n_scan_plans = n_plans;
7071
7072 i = 0;
7073 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7074 /* user specified, bail out if channel not found */
7075 nla_for_each_nested(attr,
7076 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7077 tmp) {
7078 struct ieee80211_channel *chan;
7079
7080 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7081
7082 if (!chan) {
7083 err = -EINVAL;
7084 goto out_free;
7085 }
7086
7087 /* ignore disabled channels */
7088 if (chan->flags & IEEE80211_CHAN_DISABLED)
7089 continue;
7090
7091 request->channels[i] = chan;
7092 i++;
7093 }
7094 } else {
7095 /* all channels */
7096 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7097 int j;
7098
7099 if (!wiphy->bands[band])
7100 continue;
7101 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7102 struct ieee80211_channel *chan;
7103
7104 chan = &wiphy->bands[band]->channels[j];
7105
7106 if (chan->flags & IEEE80211_CHAN_DISABLED)
7107 continue;
7108
7109 request->channels[i] = chan;
7110 i++;
7111 }
7112 }
7113 }
7114
7115 if (!i) {
7116 err = -EINVAL;
7117 goto out_free;
7118 }
7119
7120 request->n_channels = i;
7121
7122 i = 0;
7123 if (n_ssids) {
7124 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7125 tmp) {
7126 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7127 err = -EINVAL;
7128 goto out_free;
7129 }
7130 request->ssids[i].ssid_len = nla_len(attr);
7131 memcpy(request->ssids[i].ssid, nla_data(attr),
7132 nla_len(attr));
7133 i++;
7134 }
7135 }
7136
7137 i = 0;
7138 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7139 nla_for_each_nested(attr,
7140 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7141 tmp) {
7142 struct nlattr *ssid, *rssi;
7143
7144 err = nla_parse_nested(tb,
7145 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7146 attr, nl80211_match_policy);
7147 if (err)
7148 goto out_free;
7149 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7150 if (ssid) {
7151 if (WARN_ON(i >= n_match_sets)) {
7152 /* this indicates a programming error,
7153 * the loop above should have verified
7154 * things properly
7155 */
7156 err = -EINVAL;
7157 goto out_free;
7158 }
7159
7160 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7161 err = -EINVAL;
7162 goto out_free;
7163 }
7164 memcpy(request->match_sets[i].ssid.ssid,
7165 nla_data(ssid), nla_len(ssid));
7166 request->match_sets[i].ssid.ssid_len =
7167 nla_len(ssid);
7168 /* special attribute - old implementation w/a */
7169 request->match_sets[i].rssi_thold =
7170 default_match_rssi;
7171 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7172 if (rssi)
7173 request->match_sets[i].rssi_thold =
7174 nla_get_s32(rssi);
7175 }
7176 i++;
7177 }
7178
7179 /* there was no other matchset, so the RSSI one is alone */
7180 if (i == 0 && n_match_sets)
7181 request->match_sets[0].rssi_thold = default_match_rssi;
7182
7183 request->min_rssi_thold = INT_MAX;
7184 for (i = 0; i < n_match_sets; i++)
7185 request->min_rssi_thold =
7186 min(request->match_sets[i].rssi_thold,
7187 request->min_rssi_thold);
7188 } else {
7189 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7190 }
7191
7192 if (ie_len) {
7193 request->ie_len = ie_len;
7194 memcpy((void *)request->ie,
7195 nla_data(attrs[NL80211_ATTR_IE]),
7196 request->ie_len);
7197 }
7198
7199 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7200 request->flags = nla_get_u32(
7201 attrs[NL80211_ATTR_SCAN_FLAGS]);
7202 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7203 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7204 err = -EOPNOTSUPP;
7205 goto out_free;
7206 }
7207
7208 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7209 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7210
7211 if (!wdev) /* must be net-detect */
7212 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7213
7214 if (!(wiphy->features & flg)) {
7215 err = -EOPNOTSUPP;
7216 goto out_free;
7217 }
7218
7219 if (wdev && wdev->current_bss) {
7220 err = -EOPNOTSUPP;
7221 goto out_free;
7222 }
7223
7224 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7225 request->mac_addr_mask);
7226 if (err)
7227 goto out_free;
7228 }
7229 }
7230
7231 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7232 request->delay =
7233 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7234
7235 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7236 request->relative_rssi = nla_get_s8(
7237 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7238 request->relative_rssi_set = true;
7239 }
7240
7241 if (request->relative_rssi_set &&
7242 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7243 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7244
7245 rssi_adjust = nla_data(
7246 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7247 request->rssi_adjust.band = rssi_adjust->band;
7248 request->rssi_adjust.delta = rssi_adjust->delta;
7249 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7250 err = -EINVAL;
7251 goto out_free;
7252 }
7253 }
7254
7255 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7256 if (err)
7257 goto out_free;
7258
7259 request->scan_start = jiffies;
7260
7261 return request;
7262
7263 out_free:
7264 kfree(request);
7265 return ERR_PTR(err);
7266 }
7267
7268 static int nl80211_start_sched_scan(struct sk_buff *skb,
7269 struct genl_info *info)
7270 {
7271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7272 struct net_device *dev = info->user_ptr[1];
7273 struct wireless_dev *wdev = dev->ieee80211_ptr;
7274 struct cfg80211_sched_scan_request *sched_scan_req;
7275 int err;
7276
7277 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7278 !rdev->ops->sched_scan_start)
7279 return -EOPNOTSUPP;
7280
7281 if (rdev->sched_scan_req)
7282 return -EINPROGRESS;
7283
7284 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7285 info->attrs,
7286 rdev->wiphy.max_match_sets);
7287
7288 err = PTR_ERR_OR_ZERO(sched_scan_req);
7289 if (err)
7290 goto out_err;
7291
7292 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7293 if (err)
7294 goto out_free;
7295
7296 sched_scan_req->dev = dev;
7297 sched_scan_req->wiphy = &rdev->wiphy;
7298
7299 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7300 sched_scan_req->owner_nlportid = info->snd_portid;
7301
7302 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7303
7304 nl80211_send_sched_scan(rdev, dev,
7305 NL80211_CMD_START_SCHED_SCAN);
7306 return 0;
7307
7308 out_free:
7309 kfree(sched_scan_req);
7310 out_err:
7311 return err;
7312 }
7313
7314 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7315 struct genl_info *info)
7316 {
7317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7318
7319 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7320 !rdev->ops->sched_scan_stop)
7321 return -EOPNOTSUPP;
7322
7323 return __cfg80211_stop_sched_scan(rdev, false);
7324 }
7325
7326 static int nl80211_start_radar_detection(struct sk_buff *skb,
7327 struct genl_info *info)
7328 {
7329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7330 struct net_device *dev = info->user_ptr[1];
7331 struct wireless_dev *wdev = dev->ieee80211_ptr;
7332 struct cfg80211_chan_def chandef;
7333 enum nl80211_dfs_regions dfs_region;
7334 unsigned int cac_time_ms;
7335 int err;
7336
7337 dfs_region = reg_get_dfs_region(wdev->wiphy);
7338 if (dfs_region == NL80211_DFS_UNSET)
7339 return -EINVAL;
7340
7341 err = nl80211_parse_chandef(rdev, info, &chandef);
7342 if (err)
7343 return err;
7344
7345 if (netif_carrier_ok(dev))
7346 return -EBUSY;
7347
7348 if (wdev->cac_started)
7349 return -EBUSY;
7350
7351 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7352 wdev->iftype);
7353 if (err < 0)
7354 return err;
7355
7356 if (err == 0)
7357 return -EINVAL;
7358
7359 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7360 return -EINVAL;
7361
7362 if (!rdev->ops->start_radar_detection)
7363 return -EOPNOTSUPP;
7364
7365 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7366 if (WARN_ON(!cac_time_ms))
7367 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7368
7369 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7370 if (!err) {
7371 wdev->chandef = chandef;
7372 wdev->cac_started = true;
7373 wdev->cac_start_time = jiffies;
7374 wdev->cac_time_ms = cac_time_ms;
7375 }
7376 return err;
7377 }
7378
7379 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7380 {
7381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7382 struct net_device *dev = info->user_ptr[1];
7383 struct wireless_dev *wdev = dev->ieee80211_ptr;
7384 struct cfg80211_csa_settings params;
7385 /* csa_attrs is defined static to avoid waste of stack size - this
7386 * function is called under RTNL lock, so this should not be a problem.
7387 */
7388 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7389 int err;
7390 bool need_new_beacon = false;
7391 int len, i;
7392 u32 cs_count;
7393
7394 if (!rdev->ops->channel_switch ||
7395 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7396 return -EOPNOTSUPP;
7397
7398 switch (dev->ieee80211_ptr->iftype) {
7399 case NL80211_IFTYPE_AP:
7400 case NL80211_IFTYPE_P2P_GO:
7401 need_new_beacon = true;
7402
7403 /* useless if AP is not running */
7404 if (!wdev->beacon_interval)
7405 return -ENOTCONN;
7406 break;
7407 case NL80211_IFTYPE_ADHOC:
7408 if (!wdev->ssid_len)
7409 return -ENOTCONN;
7410 break;
7411 case NL80211_IFTYPE_MESH_POINT:
7412 if (!wdev->mesh_id_len)
7413 return -ENOTCONN;
7414 break;
7415 default:
7416 return -EOPNOTSUPP;
7417 }
7418
7419 memset(&params, 0, sizeof(params));
7420
7421 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7422 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7423 return -EINVAL;
7424
7425 /* only important for AP, IBSS and mesh create IEs internally */
7426 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7427 return -EINVAL;
7428
7429 /* Even though the attribute is u32, the specification says
7430 * u8, so let's make sure we don't overflow.
7431 */
7432 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7433 if (cs_count > 255)
7434 return -EINVAL;
7435
7436 params.count = cs_count;
7437
7438 if (!need_new_beacon)
7439 goto skip_beacons;
7440
7441 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7442 if (err)
7443 return err;
7444
7445 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7446 info->attrs[NL80211_ATTR_CSA_IES],
7447 nl80211_policy);
7448 if (err)
7449 return err;
7450
7451 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7452 if (err)
7453 return err;
7454
7455 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7456 return -EINVAL;
7457
7458 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7459 if (!len || (len % sizeof(u16)))
7460 return -EINVAL;
7461
7462 params.n_counter_offsets_beacon = len / sizeof(u16);
7463 if (rdev->wiphy.max_num_csa_counters &&
7464 (params.n_counter_offsets_beacon >
7465 rdev->wiphy.max_num_csa_counters))
7466 return -EINVAL;
7467
7468 params.counter_offsets_beacon =
7469 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7470
7471 /* sanity checks - counters should fit and be the same */
7472 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7473 u16 offset = params.counter_offsets_beacon[i];
7474
7475 if (offset >= params.beacon_csa.tail_len)
7476 return -EINVAL;
7477
7478 if (params.beacon_csa.tail[offset] != params.count)
7479 return -EINVAL;
7480 }
7481
7482 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7483 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7484 if (!len || (len % sizeof(u16)))
7485 return -EINVAL;
7486
7487 params.n_counter_offsets_presp = len / sizeof(u16);
7488 if (rdev->wiphy.max_num_csa_counters &&
7489 (params.n_counter_offsets_presp >
7490 rdev->wiphy.max_num_csa_counters))
7491 return -EINVAL;
7492
7493 params.counter_offsets_presp =
7494 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7495
7496 /* sanity checks - counters should fit and be the same */
7497 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7498 u16 offset = params.counter_offsets_presp[i];
7499
7500 if (offset >= params.beacon_csa.probe_resp_len)
7501 return -EINVAL;
7502
7503 if (params.beacon_csa.probe_resp[offset] !=
7504 params.count)
7505 return -EINVAL;
7506 }
7507 }
7508
7509 skip_beacons:
7510 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7511 if (err)
7512 return err;
7513
7514 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7515 wdev->iftype))
7516 return -EINVAL;
7517
7518 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7519 &params.chandef,
7520 wdev->iftype);
7521 if (err < 0)
7522 return err;
7523
7524 if (err > 0)
7525 params.radar_required = true;
7526
7527 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7528 params.block_tx = true;
7529
7530 wdev_lock(wdev);
7531 err = rdev_channel_switch(rdev, dev, &params);
7532 wdev_unlock(wdev);
7533
7534 return err;
7535 }
7536
7537 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7538 u32 seq, int flags,
7539 struct cfg80211_registered_device *rdev,
7540 struct wireless_dev *wdev,
7541 struct cfg80211_internal_bss *intbss)
7542 {
7543 struct cfg80211_bss *res = &intbss->pub;
7544 const struct cfg80211_bss_ies *ies;
7545 void *hdr;
7546 struct nlattr *bss;
7547
7548 ASSERT_WDEV_LOCK(wdev);
7549
7550 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7551 NL80211_CMD_NEW_SCAN_RESULTS);
7552 if (!hdr)
7553 return -1;
7554
7555 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7556
7557 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7558 goto nla_put_failure;
7559 if (wdev->netdev &&
7560 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7561 goto nla_put_failure;
7562 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7563 NL80211_ATTR_PAD))
7564 goto nla_put_failure;
7565
7566 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7567 if (!bss)
7568 goto nla_put_failure;
7569 if ((!is_zero_ether_addr(res->bssid) &&
7570 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7571 goto nla_put_failure;
7572
7573 rcu_read_lock();
7574 /* indicate whether we have probe response data or not */
7575 if (rcu_access_pointer(res->proberesp_ies) &&
7576 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7577 goto fail_unlock_rcu;
7578
7579 /* this pointer prefers to be pointed to probe response data
7580 * but is always valid
7581 */
7582 ies = rcu_dereference(res->ies);
7583 if (ies) {
7584 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7585 NL80211_BSS_PAD))
7586 goto fail_unlock_rcu;
7587 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7588 ies->len, ies->data))
7589 goto fail_unlock_rcu;
7590 }
7591
7592 /* and this pointer is always (unless driver didn't know) beacon data */
7593 ies = rcu_dereference(res->beacon_ies);
7594 if (ies && ies->from_beacon) {
7595 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7596 NL80211_BSS_PAD))
7597 goto fail_unlock_rcu;
7598 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7599 ies->len, ies->data))
7600 goto fail_unlock_rcu;
7601 }
7602 rcu_read_unlock();
7603
7604 if (res->beacon_interval &&
7605 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7606 goto nla_put_failure;
7607 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7608 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7609 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7610 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7611 jiffies_to_msecs(jiffies - intbss->ts)))
7612 goto nla_put_failure;
7613
7614 if (intbss->parent_tsf &&
7615 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7616 intbss->parent_tsf, NL80211_BSS_PAD) ||
7617 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7618 intbss->parent_bssid)))
7619 goto nla_put_failure;
7620
7621 if (intbss->ts_boottime &&
7622 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7623 intbss->ts_boottime, NL80211_BSS_PAD))
7624 goto nla_put_failure;
7625
7626 switch (rdev->wiphy.signal_type) {
7627 case CFG80211_SIGNAL_TYPE_MBM:
7628 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7629 goto nla_put_failure;
7630 break;
7631 case CFG80211_SIGNAL_TYPE_UNSPEC:
7632 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7633 goto nla_put_failure;
7634 break;
7635 default:
7636 break;
7637 }
7638
7639 switch (wdev->iftype) {
7640 case NL80211_IFTYPE_P2P_CLIENT:
7641 case NL80211_IFTYPE_STATION:
7642 if (intbss == wdev->current_bss &&
7643 nla_put_u32(msg, NL80211_BSS_STATUS,
7644 NL80211_BSS_STATUS_ASSOCIATED))
7645 goto nla_put_failure;
7646 break;
7647 case NL80211_IFTYPE_ADHOC:
7648 if (intbss == wdev->current_bss &&
7649 nla_put_u32(msg, NL80211_BSS_STATUS,
7650 NL80211_BSS_STATUS_IBSS_JOINED))
7651 goto nla_put_failure;
7652 break;
7653 default:
7654 break;
7655 }
7656
7657 nla_nest_end(msg, bss);
7658
7659 genlmsg_end(msg, hdr);
7660 return 0;
7661
7662 fail_unlock_rcu:
7663 rcu_read_unlock();
7664 nla_put_failure:
7665 genlmsg_cancel(msg, hdr);
7666 return -EMSGSIZE;
7667 }
7668
7669 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7670 {
7671 struct cfg80211_registered_device *rdev;
7672 struct cfg80211_internal_bss *scan;
7673 struct wireless_dev *wdev;
7674 int start = cb->args[2], idx = 0;
7675 int err;
7676
7677 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7678 if (err)
7679 return err;
7680
7681 wdev_lock(wdev);
7682 spin_lock_bh(&rdev->bss_lock);
7683 cfg80211_bss_expire(rdev);
7684
7685 cb->seq = rdev->bss_generation;
7686
7687 list_for_each_entry(scan, &rdev->bss_list, list) {
7688 if (++idx <= start)
7689 continue;
7690 if (nl80211_send_bss(skb, cb,
7691 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7692 rdev, wdev, scan) < 0) {
7693 idx--;
7694 break;
7695 }
7696 }
7697
7698 spin_unlock_bh(&rdev->bss_lock);
7699 wdev_unlock(wdev);
7700
7701 cb->args[2] = idx;
7702 nl80211_finish_wdev_dump(rdev);
7703
7704 return skb->len;
7705 }
7706
7707 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7708 int flags, struct net_device *dev,
7709 bool allow_radio_stats,
7710 struct survey_info *survey)
7711 {
7712 void *hdr;
7713 struct nlattr *infoattr;
7714
7715 /* skip radio stats if userspace didn't request them */
7716 if (!survey->channel && !allow_radio_stats)
7717 return 0;
7718
7719 hdr = nl80211hdr_put(msg, portid, seq, flags,
7720 NL80211_CMD_NEW_SURVEY_RESULTS);
7721 if (!hdr)
7722 return -ENOMEM;
7723
7724 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7725 goto nla_put_failure;
7726
7727 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7728 if (!infoattr)
7729 goto nla_put_failure;
7730
7731 if (survey->channel &&
7732 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7733 survey->channel->center_freq))
7734 goto nla_put_failure;
7735
7736 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7737 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7738 goto nla_put_failure;
7739 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7740 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7741 goto nla_put_failure;
7742 if ((survey->filled & SURVEY_INFO_TIME) &&
7743 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7744 survey->time, NL80211_SURVEY_INFO_PAD))
7745 goto nla_put_failure;
7746 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7747 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7748 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7749 goto nla_put_failure;
7750 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7751 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7752 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7753 goto nla_put_failure;
7754 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7755 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7756 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7757 goto nla_put_failure;
7758 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7759 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7760 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7761 goto nla_put_failure;
7762 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7763 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7764 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7765 goto nla_put_failure;
7766
7767 nla_nest_end(msg, infoattr);
7768
7769 genlmsg_end(msg, hdr);
7770 return 0;
7771
7772 nla_put_failure:
7773 genlmsg_cancel(msg, hdr);
7774 return -EMSGSIZE;
7775 }
7776
7777 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7778 {
7779 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7780 struct survey_info survey;
7781 struct cfg80211_registered_device *rdev;
7782 struct wireless_dev *wdev;
7783 int survey_idx = cb->args[2];
7784 int res;
7785 bool radio_stats;
7786
7787 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7788 if (res)
7789 return res;
7790
7791 /* prepare_wdev_dump parsed the attributes */
7792 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7793
7794 if (!wdev->netdev) {
7795 res = -EINVAL;
7796 goto out_err;
7797 }
7798
7799 if (!rdev->ops->dump_survey) {
7800 res = -EOPNOTSUPP;
7801 goto out_err;
7802 }
7803
7804 while (1) {
7805 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7806 if (res == -ENOENT)
7807 break;
7808 if (res)
7809 goto out_err;
7810
7811 /* don't send disabled channels, but do send non-channel data */
7812 if (survey.channel &&
7813 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7814 survey_idx++;
7815 continue;
7816 }
7817
7818 if (nl80211_send_survey(skb,
7819 NETLINK_CB(cb->skb).portid,
7820 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7821 wdev->netdev, radio_stats, &survey) < 0)
7822 goto out;
7823 survey_idx++;
7824 }
7825
7826 out:
7827 cb->args[2] = survey_idx;
7828 res = skb->len;
7829 out_err:
7830 nl80211_finish_wdev_dump(rdev);
7831 return res;
7832 }
7833
7834 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7835 {
7836 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7837 NL80211_WPA_VERSION_2));
7838 }
7839
7840 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7841 {
7842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7843 struct net_device *dev = info->user_ptr[1];
7844 struct ieee80211_channel *chan;
7845 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7846 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7847 enum nl80211_auth_type auth_type;
7848 struct key_parse key;
7849 bool local_state_change;
7850
7851 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7852 return -EINVAL;
7853
7854 if (!info->attrs[NL80211_ATTR_MAC])
7855 return -EINVAL;
7856
7857 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7858 return -EINVAL;
7859
7860 if (!info->attrs[NL80211_ATTR_SSID])
7861 return -EINVAL;
7862
7863 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7864 return -EINVAL;
7865
7866 err = nl80211_parse_key(info, &key);
7867 if (err)
7868 return err;
7869
7870 if (key.idx >= 0) {
7871 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7872 return -EINVAL;
7873 if (!key.p.key || !key.p.key_len)
7874 return -EINVAL;
7875 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7876 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7877 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7878 key.p.key_len != WLAN_KEY_LEN_WEP104))
7879 return -EINVAL;
7880 if (key.idx > 3)
7881 return -EINVAL;
7882 } else {
7883 key.p.key_len = 0;
7884 key.p.key = NULL;
7885 }
7886
7887 if (key.idx >= 0) {
7888 int i;
7889 bool ok = false;
7890
7891 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7892 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7893 ok = true;
7894 break;
7895 }
7896 }
7897 if (!ok)
7898 return -EINVAL;
7899 }
7900
7901 if (!rdev->ops->auth)
7902 return -EOPNOTSUPP;
7903
7904 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7905 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7906 return -EOPNOTSUPP;
7907
7908 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7909 chan = nl80211_get_valid_chan(&rdev->wiphy,
7910 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7911 if (!chan)
7912 return -EINVAL;
7913
7914 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7915 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7916
7917 if (info->attrs[NL80211_ATTR_IE]) {
7918 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7919 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7920 }
7921
7922 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7923 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7924 return -EINVAL;
7925
7926 if ((auth_type == NL80211_AUTHTYPE_SAE ||
7927 auth_type == NL80211_AUTHTYPE_FILS_SK ||
7928 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7929 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7930 !info->attrs[NL80211_ATTR_AUTH_DATA])
7931 return -EINVAL;
7932
7933 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7934 if (auth_type != NL80211_AUTHTYPE_SAE &&
7935 auth_type != NL80211_AUTHTYPE_FILS_SK &&
7936 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7937 auth_type != NL80211_AUTHTYPE_FILS_PK)
7938 return -EINVAL;
7939 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7940 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7941 /* need to include at least Auth Transaction and Status Code */
7942 if (auth_data_len < 4)
7943 return -EINVAL;
7944 }
7945
7946 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7947
7948 /*
7949 * Since we no longer track auth state, ignore
7950 * requests to only change local state.
7951 */
7952 if (local_state_change)
7953 return 0;
7954
7955 wdev_lock(dev->ieee80211_ptr);
7956 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7957 ssid, ssid_len, ie, ie_len,
7958 key.p.key, key.p.key_len, key.idx,
7959 auth_data, auth_data_len);
7960 wdev_unlock(dev->ieee80211_ptr);
7961 return err;
7962 }
7963
7964 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7965 struct genl_info *info,
7966 struct cfg80211_crypto_settings *settings,
7967 int cipher_limit)
7968 {
7969 memset(settings, 0, sizeof(*settings));
7970
7971 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7972
7973 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7974 u16 proto;
7975
7976 proto = nla_get_u16(
7977 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7978 settings->control_port_ethertype = cpu_to_be16(proto);
7979 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7980 proto != ETH_P_PAE)
7981 return -EINVAL;
7982 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7983 settings->control_port_no_encrypt = true;
7984 } else
7985 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7986
7987 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7988 void *data;
7989 int len, i;
7990
7991 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7992 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7993 settings->n_ciphers_pairwise = len / sizeof(u32);
7994
7995 if (len % sizeof(u32))
7996 return -EINVAL;
7997
7998 if (settings->n_ciphers_pairwise > cipher_limit)
7999 return -EINVAL;
8000
8001 memcpy(settings->ciphers_pairwise, data, len);
8002
8003 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8004 if (!cfg80211_supported_cipher_suite(
8005 &rdev->wiphy,
8006 settings->ciphers_pairwise[i]))
8007 return -EINVAL;
8008 }
8009
8010 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8011 settings->cipher_group =
8012 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8013 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8014 settings->cipher_group))
8015 return -EINVAL;
8016 }
8017
8018 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8019 settings->wpa_versions =
8020 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8021 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8022 return -EINVAL;
8023 }
8024
8025 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8026 void *data;
8027 int len;
8028
8029 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8030 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8031 settings->n_akm_suites = len / sizeof(u32);
8032
8033 if (len % sizeof(u32))
8034 return -EINVAL;
8035
8036 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8037 return -EINVAL;
8038
8039 memcpy(settings->akm_suites, data, len);
8040 }
8041
8042 return 0;
8043 }
8044
8045 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8046 {
8047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8048 struct net_device *dev = info->user_ptr[1];
8049 struct ieee80211_channel *chan;
8050 struct cfg80211_assoc_request req = {};
8051 const u8 *bssid, *ssid;
8052 int err, ssid_len = 0;
8053
8054 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8055 return -EINVAL;
8056
8057 if (!info->attrs[NL80211_ATTR_MAC] ||
8058 !info->attrs[NL80211_ATTR_SSID] ||
8059 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8060 return -EINVAL;
8061
8062 if (!rdev->ops->assoc)
8063 return -EOPNOTSUPP;
8064
8065 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8066 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8067 return -EOPNOTSUPP;
8068
8069 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8070
8071 chan = nl80211_get_valid_chan(&rdev->wiphy,
8072 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8073 if (!chan)
8074 return -EINVAL;
8075
8076 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8077 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8078
8079 if (info->attrs[NL80211_ATTR_IE]) {
8080 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8081 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8082 }
8083
8084 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8085 enum nl80211_mfp mfp =
8086 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8087 if (mfp == NL80211_MFP_REQUIRED)
8088 req.use_mfp = true;
8089 else if (mfp != NL80211_MFP_NO)
8090 return -EINVAL;
8091 }
8092
8093 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8094 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8095
8096 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8097 req.flags |= ASSOC_REQ_DISABLE_HT;
8098
8099 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8100 memcpy(&req.ht_capa_mask,
8101 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8102 sizeof(req.ht_capa_mask));
8103
8104 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8105 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8106 return -EINVAL;
8107 memcpy(&req.ht_capa,
8108 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8109 sizeof(req.ht_capa));
8110 }
8111
8112 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8113 req.flags |= ASSOC_REQ_DISABLE_VHT;
8114
8115 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8116 memcpy(&req.vht_capa_mask,
8117 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8118 sizeof(req.vht_capa_mask));
8119
8120 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8121 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8122 return -EINVAL;
8123 memcpy(&req.vht_capa,
8124 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8125 sizeof(req.vht_capa));
8126 }
8127
8128 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8129 if (!((rdev->wiphy.features &
8130 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8131 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8132 !wiphy_ext_feature_isset(&rdev->wiphy,
8133 NL80211_EXT_FEATURE_RRM))
8134 return -EINVAL;
8135 req.flags |= ASSOC_REQ_USE_RRM;
8136 }
8137
8138 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8139 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8140 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8141 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8142 return -EINVAL;
8143 req.fils_nonces =
8144 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8145 }
8146
8147 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8148 if (!err) {
8149 wdev_lock(dev->ieee80211_ptr);
8150
8151 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8152 ssid, ssid_len, &req);
8153
8154 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8155 dev->ieee80211_ptr->conn_owner_nlportid =
8156 info->snd_portid;
8157 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8158 bssid, ETH_ALEN);
8159 }
8160
8161 wdev_unlock(dev->ieee80211_ptr);
8162 }
8163
8164 return err;
8165 }
8166
8167 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8168 {
8169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8170 struct net_device *dev = info->user_ptr[1];
8171 const u8 *ie = NULL, *bssid;
8172 int ie_len = 0, err;
8173 u16 reason_code;
8174 bool local_state_change;
8175
8176 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8177 return -EINVAL;
8178
8179 if (!info->attrs[NL80211_ATTR_MAC])
8180 return -EINVAL;
8181
8182 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8183 return -EINVAL;
8184
8185 if (!rdev->ops->deauth)
8186 return -EOPNOTSUPP;
8187
8188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8190 return -EOPNOTSUPP;
8191
8192 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8193
8194 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8195 if (reason_code == 0) {
8196 /* Reason Code 0 is reserved */
8197 return -EINVAL;
8198 }
8199
8200 if (info->attrs[NL80211_ATTR_IE]) {
8201 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8202 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8203 }
8204
8205 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8206
8207 wdev_lock(dev->ieee80211_ptr);
8208 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8209 local_state_change);
8210 wdev_unlock(dev->ieee80211_ptr);
8211 return err;
8212 }
8213
8214 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8215 {
8216 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8217 struct net_device *dev = info->user_ptr[1];
8218 const u8 *ie = NULL, *bssid;
8219 int ie_len = 0, err;
8220 u16 reason_code;
8221 bool local_state_change;
8222
8223 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8224 return -EINVAL;
8225
8226 if (!info->attrs[NL80211_ATTR_MAC])
8227 return -EINVAL;
8228
8229 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8230 return -EINVAL;
8231
8232 if (!rdev->ops->disassoc)
8233 return -EOPNOTSUPP;
8234
8235 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8236 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8237 return -EOPNOTSUPP;
8238
8239 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8240
8241 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8242 if (reason_code == 0) {
8243 /* Reason Code 0 is reserved */
8244 return -EINVAL;
8245 }
8246
8247 if (info->attrs[NL80211_ATTR_IE]) {
8248 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8249 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8250 }
8251
8252 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8253
8254 wdev_lock(dev->ieee80211_ptr);
8255 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8256 local_state_change);
8257 wdev_unlock(dev->ieee80211_ptr);
8258 return err;
8259 }
8260
8261 static bool
8262 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8263 int mcast_rate[NUM_NL80211_BANDS],
8264 int rateval)
8265 {
8266 struct wiphy *wiphy = &rdev->wiphy;
8267 bool found = false;
8268 int band, i;
8269
8270 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8271 struct ieee80211_supported_band *sband;
8272
8273 sband = wiphy->bands[band];
8274 if (!sband)
8275 continue;
8276
8277 for (i = 0; i < sband->n_bitrates; i++) {
8278 if (sband->bitrates[i].bitrate == rateval) {
8279 mcast_rate[band] = i + 1;
8280 found = true;
8281 break;
8282 }
8283 }
8284 }
8285
8286 return found;
8287 }
8288
8289 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8290 {
8291 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8292 struct net_device *dev = info->user_ptr[1];
8293 struct cfg80211_ibss_params ibss;
8294 struct wiphy *wiphy;
8295 struct cfg80211_cached_keys *connkeys = NULL;
8296 int err;
8297
8298 memset(&ibss, 0, sizeof(ibss));
8299
8300 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8301 return -EINVAL;
8302
8303 if (!info->attrs[NL80211_ATTR_SSID] ||
8304 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8305 return -EINVAL;
8306
8307 ibss.beacon_interval = 100;
8308
8309 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8310 ibss.beacon_interval =
8311 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8312
8313 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8314 ibss.beacon_interval);
8315 if (err)
8316 return err;
8317
8318 if (!rdev->ops->join_ibss)
8319 return -EOPNOTSUPP;
8320
8321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8322 return -EOPNOTSUPP;
8323
8324 wiphy = &rdev->wiphy;
8325
8326 if (info->attrs[NL80211_ATTR_MAC]) {
8327 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8328
8329 if (!is_valid_ether_addr(ibss.bssid))
8330 return -EINVAL;
8331 }
8332 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8333 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8334
8335 if (info->attrs[NL80211_ATTR_IE]) {
8336 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8337 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8338 }
8339
8340 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8341 if (err)
8342 return err;
8343
8344 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8345 NL80211_IFTYPE_ADHOC))
8346 return -EINVAL;
8347
8348 switch (ibss.chandef.width) {
8349 case NL80211_CHAN_WIDTH_5:
8350 case NL80211_CHAN_WIDTH_10:
8351 case NL80211_CHAN_WIDTH_20_NOHT:
8352 break;
8353 case NL80211_CHAN_WIDTH_20:
8354 case NL80211_CHAN_WIDTH_40:
8355 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8356 return -EINVAL;
8357 break;
8358 case NL80211_CHAN_WIDTH_80:
8359 case NL80211_CHAN_WIDTH_80P80:
8360 case NL80211_CHAN_WIDTH_160:
8361 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8362 return -EINVAL;
8363 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8364 NL80211_EXT_FEATURE_VHT_IBSS))
8365 return -EINVAL;
8366 break;
8367 default:
8368 return -EINVAL;
8369 }
8370
8371 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8372 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8373
8374 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8375 u8 *rates =
8376 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8377 int n_rates =
8378 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8379 struct ieee80211_supported_band *sband =
8380 wiphy->bands[ibss.chandef.chan->band];
8381
8382 err = ieee80211_get_ratemask(sband, rates, n_rates,
8383 &ibss.basic_rates);
8384 if (err)
8385 return err;
8386 }
8387
8388 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8389 memcpy(&ibss.ht_capa_mask,
8390 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8391 sizeof(ibss.ht_capa_mask));
8392
8393 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8394 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8395 return -EINVAL;
8396 memcpy(&ibss.ht_capa,
8397 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8398 sizeof(ibss.ht_capa));
8399 }
8400
8401 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8402 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8403 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8404 return -EINVAL;
8405
8406 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8407 bool no_ht = false;
8408
8409 connkeys = nl80211_parse_connkeys(rdev,
8410 info->attrs[NL80211_ATTR_KEYS],
8411 &no_ht);
8412 if (IS_ERR(connkeys))
8413 return PTR_ERR(connkeys);
8414
8415 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8416 no_ht) {
8417 kzfree(connkeys);
8418 return -EINVAL;
8419 }
8420 }
8421
8422 ibss.control_port =
8423 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8424
8425 ibss.userspace_handles_dfs =
8426 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8427
8428 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8429 if (err)
8430 kzfree(connkeys);
8431 return err;
8432 }
8433
8434 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8435 {
8436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8437 struct net_device *dev = info->user_ptr[1];
8438
8439 if (!rdev->ops->leave_ibss)
8440 return -EOPNOTSUPP;
8441
8442 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8443 return -EOPNOTSUPP;
8444
8445 return cfg80211_leave_ibss(rdev, dev, false);
8446 }
8447
8448 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8449 {
8450 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8451 struct net_device *dev = info->user_ptr[1];
8452 int mcast_rate[NUM_NL80211_BANDS];
8453 u32 nla_rate;
8454 int err;
8455
8456 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8457 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8459 return -EOPNOTSUPP;
8460
8461 if (!rdev->ops->set_mcast_rate)
8462 return -EOPNOTSUPP;
8463
8464 memset(mcast_rate, 0, sizeof(mcast_rate));
8465
8466 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8467 return -EINVAL;
8468
8469 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8470 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8471 return -EINVAL;
8472
8473 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8474
8475 return err;
8476 }
8477
8478 static struct sk_buff *
8479 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8480 struct wireless_dev *wdev, int approxlen,
8481 u32 portid, u32 seq, enum nl80211_commands cmd,
8482 enum nl80211_attrs attr,
8483 const struct nl80211_vendor_cmd_info *info,
8484 gfp_t gfp)
8485 {
8486 struct sk_buff *skb;
8487 void *hdr;
8488 struct nlattr *data;
8489
8490 skb = nlmsg_new(approxlen + 100, gfp);
8491 if (!skb)
8492 return NULL;
8493
8494 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8495 if (!hdr) {
8496 kfree_skb(skb);
8497 return NULL;
8498 }
8499
8500 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8501 goto nla_put_failure;
8502
8503 if (info) {
8504 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8505 info->vendor_id))
8506 goto nla_put_failure;
8507 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8508 info->subcmd))
8509 goto nla_put_failure;
8510 }
8511
8512 if (wdev) {
8513 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8514 wdev_id(wdev), NL80211_ATTR_PAD))
8515 goto nla_put_failure;
8516 if (wdev->netdev &&
8517 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8518 wdev->netdev->ifindex))
8519 goto nla_put_failure;
8520 }
8521
8522 data = nla_nest_start(skb, attr);
8523 if (!data)
8524 goto nla_put_failure;
8525
8526 ((void **)skb->cb)[0] = rdev;
8527 ((void **)skb->cb)[1] = hdr;
8528 ((void **)skb->cb)[2] = data;
8529
8530 return skb;
8531
8532 nla_put_failure:
8533 kfree_skb(skb);
8534 return NULL;
8535 }
8536
8537 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8538 struct wireless_dev *wdev,
8539 enum nl80211_commands cmd,
8540 enum nl80211_attrs attr,
8541 int vendor_event_idx,
8542 int approxlen, gfp_t gfp)
8543 {
8544 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8545 const struct nl80211_vendor_cmd_info *info;
8546
8547 switch (cmd) {
8548 case NL80211_CMD_TESTMODE:
8549 if (WARN_ON(vendor_event_idx != -1))
8550 return NULL;
8551 info = NULL;
8552 break;
8553 case NL80211_CMD_VENDOR:
8554 if (WARN_ON(vendor_event_idx < 0 ||
8555 vendor_event_idx >= wiphy->n_vendor_events))
8556 return NULL;
8557 info = &wiphy->vendor_events[vendor_event_idx];
8558 break;
8559 default:
8560 WARN_ON(1);
8561 return NULL;
8562 }
8563
8564 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8565 cmd, attr, info, gfp);
8566 }
8567 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8568
8569 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8570 {
8571 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8572 void *hdr = ((void **)skb->cb)[1];
8573 struct nlattr *data = ((void **)skb->cb)[2];
8574 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8575
8576 /* clear CB data for netlink core to own from now on */
8577 memset(skb->cb, 0, sizeof(skb->cb));
8578
8579 nla_nest_end(skb, data);
8580 genlmsg_end(skb, hdr);
8581
8582 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8583 mcgrp = NL80211_MCGRP_VENDOR;
8584
8585 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8586 mcgrp, gfp);
8587 }
8588 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8589
8590 #ifdef CONFIG_NL80211_TESTMODE
8591 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8592 {
8593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8594 struct wireless_dev *wdev =
8595 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8596 int err;
8597
8598 if (!rdev->ops->testmode_cmd)
8599 return -EOPNOTSUPP;
8600
8601 if (IS_ERR(wdev)) {
8602 err = PTR_ERR(wdev);
8603 if (err != -EINVAL)
8604 return err;
8605 wdev = NULL;
8606 } else if (wdev->wiphy != &rdev->wiphy) {
8607 return -EINVAL;
8608 }
8609
8610 if (!info->attrs[NL80211_ATTR_TESTDATA])
8611 return -EINVAL;
8612
8613 rdev->cur_cmd_info = info;
8614 err = rdev_testmode_cmd(rdev, wdev,
8615 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8616 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8617 rdev->cur_cmd_info = NULL;
8618
8619 return err;
8620 }
8621
8622 static int nl80211_testmode_dump(struct sk_buff *skb,
8623 struct netlink_callback *cb)
8624 {
8625 struct cfg80211_registered_device *rdev;
8626 int err;
8627 long phy_idx;
8628 void *data = NULL;
8629 int data_len = 0;
8630
8631 rtnl_lock();
8632
8633 if (cb->args[0]) {
8634 /*
8635 * 0 is a valid index, but not valid for args[0],
8636 * so we need to offset by 1.
8637 */
8638 phy_idx = cb->args[0] - 1;
8639
8640 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8641 if (!rdev) {
8642 err = -ENOENT;
8643 goto out_err;
8644 }
8645 } else {
8646 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8647
8648 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8649 attrbuf, nl80211_fam.maxattr, nl80211_policy);
8650 if (err)
8651 goto out_err;
8652
8653 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8654 if (IS_ERR(rdev)) {
8655 err = PTR_ERR(rdev);
8656 goto out_err;
8657 }
8658 phy_idx = rdev->wiphy_idx;
8659
8660 if (attrbuf[NL80211_ATTR_TESTDATA])
8661 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8662 }
8663
8664 if (cb->args[1]) {
8665 data = nla_data((void *)cb->args[1]);
8666 data_len = nla_len((void *)cb->args[1]);
8667 }
8668
8669 if (!rdev->ops->testmode_dump) {
8670 err = -EOPNOTSUPP;
8671 goto out_err;
8672 }
8673
8674 while (1) {
8675 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8676 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8677 NL80211_CMD_TESTMODE);
8678 struct nlattr *tmdata;
8679
8680 if (!hdr)
8681 break;
8682
8683 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8684 genlmsg_cancel(skb, hdr);
8685 break;
8686 }
8687
8688 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8689 if (!tmdata) {
8690 genlmsg_cancel(skb, hdr);
8691 break;
8692 }
8693 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8694 nla_nest_end(skb, tmdata);
8695
8696 if (err == -ENOBUFS || err == -ENOENT) {
8697 genlmsg_cancel(skb, hdr);
8698 break;
8699 } else if (err) {
8700 genlmsg_cancel(skb, hdr);
8701 goto out_err;
8702 }
8703
8704 genlmsg_end(skb, hdr);
8705 }
8706
8707 err = skb->len;
8708 /* see above */
8709 cb->args[0] = phy_idx + 1;
8710 out_err:
8711 rtnl_unlock();
8712 return err;
8713 }
8714 #endif
8715
8716 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8717 {
8718 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8719 struct net_device *dev = info->user_ptr[1];
8720 struct cfg80211_connect_params connect;
8721 struct wiphy *wiphy;
8722 struct cfg80211_cached_keys *connkeys = NULL;
8723 int err;
8724
8725 memset(&connect, 0, sizeof(connect));
8726
8727 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8728 return -EINVAL;
8729
8730 if (!info->attrs[NL80211_ATTR_SSID] ||
8731 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8732 return -EINVAL;
8733
8734 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8735 connect.auth_type =
8736 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8737 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8738 NL80211_CMD_CONNECT))
8739 return -EINVAL;
8740 } else
8741 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8742
8743 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8744
8745 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8746 NL80211_MAX_NR_CIPHER_SUITES);
8747 if (err)
8748 return err;
8749
8750 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8751 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8752 return -EOPNOTSUPP;
8753
8754 wiphy = &rdev->wiphy;
8755
8756 connect.bg_scan_period = -1;
8757 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8758 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8759 connect.bg_scan_period =
8760 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8761 }
8762
8763 if (info->attrs[NL80211_ATTR_MAC])
8764 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8765 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8766 connect.bssid_hint =
8767 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8768 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8769 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8770
8771 if (info->attrs[NL80211_ATTR_IE]) {
8772 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8773 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8774 }
8775
8776 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8777 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8778 if (connect.mfp != NL80211_MFP_REQUIRED &&
8779 connect.mfp != NL80211_MFP_NO)
8780 return -EINVAL;
8781 } else {
8782 connect.mfp = NL80211_MFP_NO;
8783 }
8784
8785 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8786 connect.prev_bssid =
8787 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8788
8789 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8790 connect.channel = nl80211_get_valid_chan(
8791 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8792 if (!connect.channel)
8793 return -EINVAL;
8794 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8795 connect.channel_hint = nl80211_get_valid_chan(
8796 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8797 if (!connect.channel_hint)
8798 return -EINVAL;
8799 }
8800
8801 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8802 connkeys = nl80211_parse_connkeys(rdev,
8803 info->attrs[NL80211_ATTR_KEYS], NULL);
8804 if (IS_ERR(connkeys))
8805 return PTR_ERR(connkeys);
8806 }
8807
8808 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8809 connect.flags |= ASSOC_REQ_DISABLE_HT;
8810
8811 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8812 memcpy(&connect.ht_capa_mask,
8813 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8814 sizeof(connect.ht_capa_mask));
8815
8816 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8817 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8818 kzfree(connkeys);
8819 return -EINVAL;
8820 }
8821 memcpy(&connect.ht_capa,
8822 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8823 sizeof(connect.ht_capa));
8824 }
8825
8826 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8827 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8828
8829 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8830 memcpy(&connect.vht_capa_mask,
8831 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8832 sizeof(connect.vht_capa_mask));
8833
8834 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8835 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8836 kzfree(connkeys);
8837 return -EINVAL;
8838 }
8839 memcpy(&connect.vht_capa,
8840 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8841 sizeof(connect.vht_capa));
8842 }
8843
8844 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8845 if (!((rdev->wiphy.features &
8846 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8847 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8848 !wiphy_ext_feature_isset(&rdev->wiphy,
8849 NL80211_EXT_FEATURE_RRM)) {
8850 kzfree(connkeys);
8851 return -EINVAL;
8852 }
8853 connect.flags |= ASSOC_REQ_USE_RRM;
8854 }
8855
8856 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8857 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8858 kzfree(connkeys);
8859 return -EOPNOTSUPP;
8860 }
8861
8862 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8863 /* bss selection makes no sense if bssid is set */
8864 if (connect.bssid) {
8865 kzfree(connkeys);
8866 return -EINVAL;
8867 }
8868
8869 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8870 wiphy, &connect.bss_select);
8871 if (err) {
8872 kzfree(connkeys);
8873 return err;
8874 }
8875 }
8876
8877 wdev_lock(dev->ieee80211_ptr);
8878
8879 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8880 connect.prev_bssid);
8881 if (err)
8882 kzfree(connkeys);
8883
8884 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8885 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8886 if (connect.bssid)
8887 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8888 connect.bssid, ETH_ALEN);
8889 else
8890 memset(dev->ieee80211_ptr->disconnect_bssid,
8891 0, ETH_ALEN);
8892 }
8893
8894 wdev_unlock(dev->ieee80211_ptr);
8895
8896 return err;
8897 }
8898
8899 static int nl80211_update_connect_params(struct sk_buff *skb,
8900 struct genl_info *info)
8901 {
8902 struct cfg80211_connect_params connect = {};
8903 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8904 struct net_device *dev = info->user_ptr[1];
8905 struct wireless_dev *wdev = dev->ieee80211_ptr;
8906 u32 changed = 0;
8907 int ret;
8908
8909 if (!rdev->ops->update_connect_params)
8910 return -EOPNOTSUPP;
8911
8912 if (info->attrs[NL80211_ATTR_IE]) {
8913 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8914 return -EINVAL;
8915 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8916 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8917 changed |= UPDATE_ASSOC_IES;
8918 }
8919
8920 wdev_lock(dev->ieee80211_ptr);
8921 if (!wdev->current_bss)
8922 ret = -ENOLINK;
8923 else
8924 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8925 wdev_unlock(dev->ieee80211_ptr);
8926
8927 return ret;
8928 }
8929
8930 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8931 {
8932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8933 struct net_device *dev = info->user_ptr[1];
8934 u16 reason;
8935 int ret;
8936
8937 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8938 reason = WLAN_REASON_DEAUTH_LEAVING;
8939 else
8940 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8941
8942 if (reason == 0)
8943 return -EINVAL;
8944
8945 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8946 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8947 return -EOPNOTSUPP;
8948
8949 wdev_lock(dev->ieee80211_ptr);
8950 ret = cfg80211_disconnect(rdev, dev, reason, true);
8951 wdev_unlock(dev->ieee80211_ptr);
8952 return ret;
8953 }
8954
8955 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8956 {
8957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8958 struct net *net;
8959 int err;
8960
8961 if (info->attrs[NL80211_ATTR_PID]) {
8962 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8963
8964 net = get_net_ns_by_pid(pid);
8965 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8966 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8967
8968 net = get_net_ns_by_fd(fd);
8969 } else {
8970 return -EINVAL;
8971 }
8972
8973 if (IS_ERR(net))
8974 return PTR_ERR(net);
8975
8976 err = 0;
8977
8978 /* check if anything to do */
8979 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8980 err = cfg80211_switch_netns(rdev, net);
8981
8982 put_net(net);
8983 return err;
8984 }
8985
8986 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8987 {
8988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8989 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8990 struct cfg80211_pmksa *pmksa) = NULL;
8991 struct net_device *dev = info->user_ptr[1];
8992 struct cfg80211_pmksa pmksa;
8993
8994 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8995
8996 if (!info->attrs[NL80211_ATTR_MAC])
8997 return -EINVAL;
8998
8999 if (!info->attrs[NL80211_ATTR_PMKID])
9000 return -EINVAL;
9001
9002 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9003 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9004
9005 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9006 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9007 return -EOPNOTSUPP;
9008
9009 switch (info->genlhdr->cmd) {
9010 case NL80211_CMD_SET_PMKSA:
9011 rdev_ops = rdev->ops->set_pmksa;
9012 break;
9013 case NL80211_CMD_DEL_PMKSA:
9014 rdev_ops = rdev->ops->del_pmksa;
9015 break;
9016 default:
9017 WARN_ON(1);
9018 break;
9019 }
9020
9021 if (!rdev_ops)
9022 return -EOPNOTSUPP;
9023
9024 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9025 }
9026
9027 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9028 {
9029 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9030 struct net_device *dev = info->user_ptr[1];
9031
9032 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9033 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9034 return -EOPNOTSUPP;
9035
9036 if (!rdev->ops->flush_pmksa)
9037 return -EOPNOTSUPP;
9038
9039 return rdev_flush_pmksa(rdev, dev);
9040 }
9041
9042 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9043 {
9044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9045 struct net_device *dev = info->user_ptr[1];
9046 u8 action_code, dialog_token;
9047 u32 peer_capability = 0;
9048 u16 status_code;
9049 u8 *peer;
9050 bool initiator;
9051
9052 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9053 !rdev->ops->tdls_mgmt)
9054 return -EOPNOTSUPP;
9055
9056 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9057 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9058 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9059 !info->attrs[NL80211_ATTR_IE] ||
9060 !info->attrs[NL80211_ATTR_MAC])
9061 return -EINVAL;
9062
9063 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9064 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9065 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9066 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9067 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9068 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9069 peer_capability =
9070 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9071
9072 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9073 dialog_token, status_code, peer_capability,
9074 initiator,
9075 nla_data(info->attrs[NL80211_ATTR_IE]),
9076 nla_len(info->attrs[NL80211_ATTR_IE]));
9077 }
9078
9079 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9080 {
9081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9082 struct net_device *dev = info->user_ptr[1];
9083 enum nl80211_tdls_operation operation;
9084 u8 *peer;
9085
9086 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9087 !rdev->ops->tdls_oper)
9088 return -EOPNOTSUPP;
9089
9090 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9091 !info->attrs[NL80211_ATTR_MAC])
9092 return -EINVAL;
9093
9094 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9095 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9096
9097 return rdev_tdls_oper(rdev, dev, peer, operation);
9098 }
9099
9100 static int nl80211_remain_on_channel(struct sk_buff *skb,
9101 struct genl_info *info)
9102 {
9103 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9104 struct wireless_dev *wdev = info->user_ptr[1];
9105 struct cfg80211_chan_def chandef;
9106 struct sk_buff *msg;
9107 void *hdr;
9108 u64 cookie;
9109 u32 duration;
9110 int err;
9111
9112 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9113 !info->attrs[NL80211_ATTR_DURATION])
9114 return -EINVAL;
9115
9116 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9117
9118 if (!rdev->ops->remain_on_channel ||
9119 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9120 return -EOPNOTSUPP;
9121
9122 /*
9123 * We should be on that channel for at least a minimum amount of
9124 * time (10ms) but no longer than the driver supports.
9125 */
9126 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9127 duration > rdev->wiphy.max_remain_on_channel_duration)
9128 return -EINVAL;
9129
9130 err = nl80211_parse_chandef(rdev, info, &chandef);
9131 if (err)
9132 return err;
9133
9134 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9135 if (!msg)
9136 return -ENOMEM;
9137
9138 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9139 NL80211_CMD_REMAIN_ON_CHANNEL);
9140 if (!hdr) {
9141 err = -ENOBUFS;
9142 goto free_msg;
9143 }
9144
9145 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9146 duration, &cookie);
9147
9148 if (err)
9149 goto free_msg;
9150
9151 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9152 NL80211_ATTR_PAD))
9153 goto nla_put_failure;
9154
9155 genlmsg_end(msg, hdr);
9156
9157 return genlmsg_reply(msg, info);
9158
9159 nla_put_failure:
9160 err = -ENOBUFS;
9161 free_msg:
9162 nlmsg_free(msg);
9163 return err;
9164 }
9165
9166 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9167 struct genl_info *info)
9168 {
9169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9170 struct wireless_dev *wdev = info->user_ptr[1];
9171 u64 cookie;
9172
9173 if (!info->attrs[NL80211_ATTR_COOKIE])
9174 return -EINVAL;
9175
9176 if (!rdev->ops->cancel_remain_on_channel)
9177 return -EOPNOTSUPP;
9178
9179 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9180
9181 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9182 }
9183
9184 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9185 struct genl_info *info)
9186 {
9187 struct cfg80211_bitrate_mask mask;
9188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9189 struct net_device *dev = info->user_ptr[1];
9190 int err;
9191
9192 if (!rdev->ops->set_bitrate_mask)
9193 return -EOPNOTSUPP;
9194
9195 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9196 if (err)
9197 return err;
9198
9199 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9200 }
9201
9202 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9203 {
9204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9205 struct wireless_dev *wdev = info->user_ptr[1];
9206 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9207
9208 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9209 return -EINVAL;
9210
9211 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9212 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9213
9214 switch (wdev->iftype) {
9215 case NL80211_IFTYPE_STATION:
9216 case NL80211_IFTYPE_ADHOC:
9217 case NL80211_IFTYPE_P2P_CLIENT:
9218 case NL80211_IFTYPE_AP:
9219 case NL80211_IFTYPE_AP_VLAN:
9220 case NL80211_IFTYPE_MESH_POINT:
9221 case NL80211_IFTYPE_P2P_GO:
9222 case NL80211_IFTYPE_P2P_DEVICE:
9223 break;
9224 case NL80211_IFTYPE_NAN:
9225 default:
9226 return -EOPNOTSUPP;
9227 }
9228
9229 /* not much point in registering if we can't reply */
9230 if (!rdev->ops->mgmt_tx)
9231 return -EOPNOTSUPP;
9232
9233 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9234 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9235 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9236 }
9237
9238 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9239 {
9240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9241 struct wireless_dev *wdev = info->user_ptr[1];
9242 struct cfg80211_chan_def chandef;
9243 int err;
9244 void *hdr = NULL;
9245 u64 cookie;
9246 struct sk_buff *msg = NULL;
9247 struct cfg80211_mgmt_tx_params params = {
9248 .dont_wait_for_ack =
9249 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9250 };
9251
9252 if (!info->attrs[NL80211_ATTR_FRAME])
9253 return -EINVAL;
9254
9255 if (!rdev->ops->mgmt_tx)
9256 return -EOPNOTSUPP;
9257
9258 switch (wdev->iftype) {
9259 case NL80211_IFTYPE_P2P_DEVICE:
9260 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9261 return -EINVAL;
9262 case NL80211_IFTYPE_STATION:
9263 case NL80211_IFTYPE_ADHOC:
9264 case NL80211_IFTYPE_P2P_CLIENT:
9265 case NL80211_IFTYPE_AP:
9266 case NL80211_IFTYPE_AP_VLAN:
9267 case NL80211_IFTYPE_MESH_POINT:
9268 case NL80211_IFTYPE_P2P_GO:
9269 break;
9270 case NL80211_IFTYPE_NAN:
9271 default:
9272 return -EOPNOTSUPP;
9273 }
9274
9275 if (info->attrs[NL80211_ATTR_DURATION]) {
9276 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9277 return -EINVAL;
9278 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9279
9280 /*
9281 * We should wait on the channel for at least a minimum amount
9282 * of time (10ms) but no longer than the driver supports.
9283 */
9284 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9285 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9286 return -EINVAL;
9287 }
9288
9289 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9290
9291 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9292 return -EINVAL;
9293
9294 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9295
9296 /* get the channel if any has been specified, otherwise pass NULL to
9297 * the driver. The latter will use the current one
9298 */
9299 chandef.chan = NULL;
9300 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9301 err = nl80211_parse_chandef(rdev, info, &chandef);
9302 if (err)
9303 return err;
9304 }
9305
9306 if (!chandef.chan && params.offchan)
9307 return -EINVAL;
9308
9309 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9310 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9311
9312 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9313 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9314 int i;
9315
9316 if (len % sizeof(u16))
9317 return -EINVAL;
9318
9319 params.n_csa_offsets = len / sizeof(u16);
9320 params.csa_offsets =
9321 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9322
9323 /* check that all the offsets fit the frame */
9324 for (i = 0; i < params.n_csa_offsets; i++) {
9325 if (params.csa_offsets[i] >= params.len)
9326 return -EINVAL;
9327 }
9328 }
9329
9330 if (!params.dont_wait_for_ack) {
9331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9332 if (!msg)
9333 return -ENOMEM;
9334
9335 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9336 NL80211_CMD_FRAME);
9337 if (!hdr) {
9338 err = -ENOBUFS;
9339 goto free_msg;
9340 }
9341 }
9342
9343 params.chan = chandef.chan;
9344 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9345 if (err)
9346 goto free_msg;
9347
9348 if (msg) {
9349 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9350 NL80211_ATTR_PAD))
9351 goto nla_put_failure;
9352
9353 genlmsg_end(msg, hdr);
9354 return genlmsg_reply(msg, info);
9355 }
9356
9357 return 0;
9358
9359 nla_put_failure:
9360 err = -ENOBUFS;
9361 free_msg:
9362 nlmsg_free(msg);
9363 return err;
9364 }
9365
9366 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9367 {
9368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9369 struct wireless_dev *wdev = info->user_ptr[1];
9370 u64 cookie;
9371
9372 if (!info->attrs[NL80211_ATTR_COOKIE])
9373 return -EINVAL;
9374
9375 if (!rdev->ops->mgmt_tx_cancel_wait)
9376 return -EOPNOTSUPP;
9377
9378 switch (wdev->iftype) {
9379 case NL80211_IFTYPE_STATION:
9380 case NL80211_IFTYPE_ADHOC:
9381 case NL80211_IFTYPE_P2P_CLIENT:
9382 case NL80211_IFTYPE_AP:
9383 case NL80211_IFTYPE_AP_VLAN:
9384 case NL80211_IFTYPE_P2P_GO:
9385 case NL80211_IFTYPE_P2P_DEVICE:
9386 break;
9387 case NL80211_IFTYPE_NAN:
9388 default:
9389 return -EOPNOTSUPP;
9390 }
9391
9392 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9393
9394 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9395 }
9396
9397 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9398 {
9399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9400 struct wireless_dev *wdev;
9401 struct net_device *dev = info->user_ptr[1];
9402 u8 ps_state;
9403 bool state;
9404 int err;
9405
9406 if (!info->attrs[NL80211_ATTR_PS_STATE])
9407 return -EINVAL;
9408
9409 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9410
9411 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9412 return -EINVAL;
9413
9414 wdev = dev->ieee80211_ptr;
9415
9416 if (!rdev->ops->set_power_mgmt)
9417 return -EOPNOTSUPP;
9418
9419 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9420
9421 if (state == wdev->ps)
9422 return 0;
9423
9424 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9425 if (!err)
9426 wdev->ps = state;
9427 return err;
9428 }
9429
9430 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9431 {
9432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9433 enum nl80211_ps_state ps_state;
9434 struct wireless_dev *wdev;
9435 struct net_device *dev = info->user_ptr[1];
9436 struct sk_buff *msg;
9437 void *hdr;
9438 int err;
9439
9440 wdev = dev->ieee80211_ptr;
9441
9442 if (!rdev->ops->set_power_mgmt)
9443 return -EOPNOTSUPP;
9444
9445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9446 if (!msg)
9447 return -ENOMEM;
9448
9449 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9450 NL80211_CMD_GET_POWER_SAVE);
9451 if (!hdr) {
9452 err = -ENOBUFS;
9453 goto free_msg;
9454 }
9455
9456 if (wdev->ps)
9457 ps_state = NL80211_PS_ENABLED;
9458 else
9459 ps_state = NL80211_PS_DISABLED;
9460
9461 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9462 goto nla_put_failure;
9463
9464 genlmsg_end(msg, hdr);
9465 return genlmsg_reply(msg, info);
9466
9467 nla_put_failure:
9468 err = -ENOBUFS;
9469 free_msg:
9470 nlmsg_free(msg);
9471 return err;
9472 }
9473
9474 static const struct nla_policy
9475 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9476 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9477 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9478 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9479 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9480 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9481 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9482 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9483 };
9484
9485 static int nl80211_set_cqm_txe(struct genl_info *info,
9486 u32 rate, u32 pkts, u32 intvl)
9487 {
9488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9489 struct net_device *dev = info->user_ptr[1];
9490 struct wireless_dev *wdev = dev->ieee80211_ptr;
9491
9492 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9493 return -EINVAL;
9494
9495 if (!rdev->ops->set_cqm_txe_config)
9496 return -EOPNOTSUPP;
9497
9498 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9499 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9500 return -EOPNOTSUPP;
9501
9502 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9503 }
9504
9505 static int nl80211_set_cqm_rssi(struct genl_info *info,
9506 s32 threshold, u32 hysteresis)
9507 {
9508 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9509 struct net_device *dev = info->user_ptr[1];
9510 struct wireless_dev *wdev = dev->ieee80211_ptr;
9511
9512 if (threshold > 0)
9513 return -EINVAL;
9514
9515 /* disabling - hysteresis should also be zero then */
9516 if (threshold == 0)
9517 hysteresis = 0;
9518
9519 if (!rdev->ops->set_cqm_rssi_config)
9520 return -EOPNOTSUPP;
9521
9522 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9523 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9524 return -EOPNOTSUPP;
9525
9526 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9527 }
9528
9529 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9530 {
9531 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9532 struct nlattr *cqm;
9533 int err;
9534
9535 cqm = info->attrs[NL80211_ATTR_CQM];
9536 if (!cqm)
9537 return -EINVAL;
9538
9539 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9540 nl80211_attr_cqm_policy);
9541 if (err)
9542 return err;
9543
9544 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9545 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9546 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9547 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9548
9549 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9550 }
9551
9552 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9553 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9554 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9555 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9556 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9557 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9558
9559 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9560 }
9561
9562 return -EINVAL;
9563 }
9564
9565 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9566 {
9567 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9568 struct net_device *dev = info->user_ptr[1];
9569 struct ocb_setup setup = {};
9570 int err;
9571
9572 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9573 if (err)
9574 return err;
9575
9576 return cfg80211_join_ocb(rdev, dev, &setup);
9577 }
9578
9579 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9580 {
9581 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9582 struct net_device *dev = info->user_ptr[1];
9583
9584 return cfg80211_leave_ocb(rdev, dev);
9585 }
9586
9587 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9588 {
9589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9590 struct net_device *dev = info->user_ptr[1];
9591 struct mesh_config cfg;
9592 struct mesh_setup setup;
9593 int err;
9594
9595 /* start with default */
9596 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9597 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9598
9599 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9600 /* and parse parameters if given */
9601 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9602 if (err)
9603 return err;
9604 }
9605
9606 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9607 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9608 return -EINVAL;
9609
9610 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9611 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9612
9613 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9614 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9615 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9616 return -EINVAL;
9617
9618 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9619 setup.beacon_interval =
9620 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9621
9622 err = cfg80211_validate_beacon_int(rdev,
9623 NL80211_IFTYPE_MESH_POINT,
9624 setup.beacon_interval);
9625 if (err)
9626 return err;
9627 }
9628
9629 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9630 setup.dtim_period =
9631 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9632 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9633 return -EINVAL;
9634 }
9635
9636 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9637 /* parse additional setup parameters if given */
9638 err = nl80211_parse_mesh_setup(info, &setup);
9639 if (err)
9640 return err;
9641 }
9642
9643 if (setup.user_mpm)
9644 cfg.auto_open_plinks = false;
9645
9646 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9647 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9648 if (err)
9649 return err;
9650 } else {
9651 /* cfg80211_join_mesh() will sort it out */
9652 setup.chandef.chan = NULL;
9653 }
9654
9655 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9656 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9657 int n_rates =
9658 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9659 struct ieee80211_supported_band *sband;
9660
9661 if (!setup.chandef.chan)
9662 return -EINVAL;
9663
9664 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9665
9666 err = ieee80211_get_ratemask(sband, rates, n_rates,
9667 &setup.basic_rates);
9668 if (err)
9669 return err;
9670 }
9671
9672 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9673 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9674 if (err)
9675 return err;
9676
9677 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9678 &setup.beacon_rate);
9679 if (err)
9680 return err;
9681 }
9682
9683 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9684 }
9685
9686 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9687 {
9688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9689 struct net_device *dev = info->user_ptr[1];
9690
9691 return cfg80211_leave_mesh(rdev, dev);
9692 }
9693
9694 #ifdef CONFIG_PM
9695 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9696 struct cfg80211_registered_device *rdev)
9697 {
9698 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9699 struct nlattr *nl_pats, *nl_pat;
9700 int i, pat_len;
9701
9702 if (!wowlan->n_patterns)
9703 return 0;
9704
9705 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9706 if (!nl_pats)
9707 return -ENOBUFS;
9708
9709 for (i = 0; i < wowlan->n_patterns; i++) {
9710 nl_pat = nla_nest_start(msg, i + 1);
9711 if (!nl_pat)
9712 return -ENOBUFS;
9713 pat_len = wowlan->patterns[i].pattern_len;
9714 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9715 wowlan->patterns[i].mask) ||
9716 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9717 wowlan->patterns[i].pattern) ||
9718 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9719 wowlan->patterns[i].pkt_offset))
9720 return -ENOBUFS;
9721 nla_nest_end(msg, nl_pat);
9722 }
9723 nla_nest_end(msg, nl_pats);
9724
9725 return 0;
9726 }
9727
9728 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9729 struct cfg80211_wowlan_tcp *tcp)
9730 {
9731 struct nlattr *nl_tcp;
9732
9733 if (!tcp)
9734 return 0;
9735
9736 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9737 if (!nl_tcp)
9738 return -ENOBUFS;
9739
9740 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9741 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9742 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9743 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9744 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9745 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9746 tcp->payload_len, tcp->payload) ||
9747 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9748 tcp->data_interval) ||
9749 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9750 tcp->wake_len, tcp->wake_data) ||
9751 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9752 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9753 return -ENOBUFS;
9754
9755 if (tcp->payload_seq.len &&
9756 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9757 sizeof(tcp->payload_seq), &tcp->payload_seq))
9758 return -ENOBUFS;
9759
9760 if (tcp->payload_tok.len &&
9761 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9762 sizeof(tcp->payload_tok) + tcp->tokens_size,
9763 &tcp->payload_tok))
9764 return -ENOBUFS;
9765
9766 nla_nest_end(msg, nl_tcp);
9767
9768 return 0;
9769 }
9770
9771 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9772 struct cfg80211_sched_scan_request *req)
9773 {
9774 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9775 int i;
9776
9777 if (!req)
9778 return 0;
9779
9780 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9781 if (!nd)
9782 return -ENOBUFS;
9783
9784 if (req->n_scan_plans == 1 &&
9785 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9786 req->scan_plans[0].interval * 1000))
9787 return -ENOBUFS;
9788
9789 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9790 return -ENOBUFS;
9791
9792 if (req->relative_rssi_set) {
9793 struct nl80211_bss_select_rssi_adjust rssi_adjust;
9794
9795 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
9796 req->relative_rssi))
9797 return -ENOBUFS;
9798
9799 rssi_adjust.band = req->rssi_adjust.band;
9800 rssi_adjust.delta = req->rssi_adjust.delta;
9801 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
9802 sizeof(rssi_adjust), &rssi_adjust))
9803 return -ENOBUFS;
9804 }
9805
9806 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9807 if (!freqs)
9808 return -ENOBUFS;
9809
9810 for (i = 0; i < req->n_channels; i++) {
9811 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9812 return -ENOBUFS;
9813 }
9814
9815 nla_nest_end(msg, freqs);
9816
9817 if (req->n_match_sets) {
9818 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9819 if (!matches)
9820 return -ENOBUFS;
9821
9822 for (i = 0; i < req->n_match_sets; i++) {
9823 match = nla_nest_start(msg, i);
9824 if (!match)
9825 return -ENOBUFS;
9826
9827 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9828 req->match_sets[i].ssid.ssid_len,
9829 req->match_sets[i].ssid.ssid))
9830 return -ENOBUFS;
9831 nla_nest_end(msg, match);
9832 }
9833 nla_nest_end(msg, matches);
9834 }
9835
9836 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9837 if (!scan_plans)
9838 return -ENOBUFS;
9839
9840 for (i = 0; i < req->n_scan_plans; i++) {
9841 scan_plan = nla_nest_start(msg, i + 1);
9842 if (!scan_plan)
9843 return -ENOBUFS;
9844
9845 if (!scan_plan ||
9846 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9847 req->scan_plans[i].interval) ||
9848 (req->scan_plans[i].iterations &&
9849 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9850 req->scan_plans[i].iterations)))
9851 return -ENOBUFS;
9852 nla_nest_end(msg, scan_plan);
9853 }
9854 nla_nest_end(msg, scan_plans);
9855
9856 nla_nest_end(msg, nd);
9857
9858 return 0;
9859 }
9860
9861 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9862 {
9863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9864 struct sk_buff *msg;
9865 void *hdr;
9866 u32 size = NLMSG_DEFAULT_SIZE;
9867
9868 if (!rdev->wiphy.wowlan)
9869 return -EOPNOTSUPP;
9870
9871 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9872 /* adjust size to have room for all the data */
9873 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9874 rdev->wiphy.wowlan_config->tcp->payload_len +
9875 rdev->wiphy.wowlan_config->tcp->wake_len +
9876 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9877 }
9878
9879 msg = nlmsg_new(size, GFP_KERNEL);
9880 if (!msg)
9881 return -ENOMEM;
9882
9883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9884 NL80211_CMD_GET_WOWLAN);
9885 if (!hdr)
9886 goto nla_put_failure;
9887
9888 if (rdev->wiphy.wowlan_config) {
9889 struct nlattr *nl_wowlan;
9890
9891 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9892 if (!nl_wowlan)
9893 goto nla_put_failure;
9894
9895 if ((rdev->wiphy.wowlan_config->any &&
9896 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9897 (rdev->wiphy.wowlan_config->disconnect &&
9898 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9899 (rdev->wiphy.wowlan_config->magic_pkt &&
9900 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9901 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9902 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9903 (rdev->wiphy.wowlan_config->eap_identity_req &&
9904 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9905 (rdev->wiphy.wowlan_config->four_way_handshake &&
9906 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9907 (rdev->wiphy.wowlan_config->rfkill_release &&
9908 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9909 goto nla_put_failure;
9910
9911 if (nl80211_send_wowlan_patterns(msg, rdev))
9912 goto nla_put_failure;
9913
9914 if (nl80211_send_wowlan_tcp(msg,
9915 rdev->wiphy.wowlan_config->tcp))
9916 goto nla_put_failure;
9917
9918 if (nl80211_send_wowlan_nd(
9919 msg,
9920 rdev->wiphy.wowlan_config->nd_config))
9921 goto nla_put_failure;
9922
9923 nla_nest_end(msg, nl_wowlan);
9924 }
9925
9926 genlmsg_end(msg, hdr);
9927 return genlmsg_reply(msg, info);
9928
9929 nla_put_failure:
9930 nlmsg_free(msg);
9931 return -ENOBUFS;
9932 }
9933
9934 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9935 struct nlattr *attr,
9936 struct cfg80211_wowlan *trig)
9937 {
9938 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9939 struct cfg80211_wowlan_tcp *cfg;
9940 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9941 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9942 u32 size;
9943 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9944 int err, port;
9945
9946 if (!rdev->wiphy.wowlan->tcp)
9947 return -EINVAL;
9948
9949 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9950 nl80211_wowlan_tcp_policy);
9951 if (err)
9952 return err;
9953
9954 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9955 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9956 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9957 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9958 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9959 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9960 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9961 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9962 return -EINVAL;
9963
9964 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9965 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9966 return -EINVAL;
9967
9968 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9969 rdev->wiphy.wowlan->tcp->data_interval_max ||
9970 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9971 return -EINVAL;
9972
9973 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9974 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9975 return -EINVAL;
9976
9977 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9978 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9979 return -EINVAL;
9980
9981 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9982 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9983
9984 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9985 tokens_size = tokln - sizeof(*tok);
9986
9987 if (!tok->len || tokens_size % tok->len)
9988 return -EINVAL;
9989 if (!rdev->wiphy.wowlan->tcp->tok)
9990 return -EINVAL;
9991 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9992 return -EINVAL;
9993 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9994 return -EINVAL;
9995 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9996 return -EINVAL;
9997 if (tok->offset + tok->len > data_size)
9998 return -EINVAL;
9999 }
10000
10001 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10002 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10003 if (!rdev->wiphy.wowlan->tcp->seq)
10004 return -EINVAL;
10005 if (seq->len == 0 || seq->len > 4)
10006 return -EINVAL;
10007 if (seq->len + seq->offset > data_size)
10008 return -EINVAL;
10009 }
10010
10011 size = sizeof(*cfg);
10012 size += data_size;
10013 size += wake_size + wake_mask_size;
10014 size += tokens_size;
10015
10016 cfg = kzalloc(size, GFP_KERNEL);
10017 if (!cfg)
10018 return -ENOMEM;
10019 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10020 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10021 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10022 ETH_ALEN);
10023 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10024 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10025 else
10026 port = 0;
10027 #ifdef CONFIG_INET
10028 /* allocate a socket and port for it and use it */
10029 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10030 IPPROTO_TCP, &cfg->sock, 1);
10031 if (err) {
10032 kfree(cfg);
10033 return err;
10034 }
10035 if (inet_csk_get_port(cfg->sock->sk, port)) {
10036 sock_release(cfg->sock);
10037 kfree(cfg);
10038 return -EADDRINUSE;
10039 }
10040 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10041 #else
10042 if (!port) {
10043 kfree(cfg);
10044 return -EINVAL;
10045 }
10046 cfg->src_port = port;
10047 #endif
10048
10049 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10050 cfg->payload_len = data_size;
10051 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10052 memcpy((void *)cfg->payload,
10053 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10054 data_size);
10055 if (seq)
10056 cfg->payload_seq = *seq;
10057 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10058 cfg->wake_len = wake_size;
10059 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10060 memcpy((void *)cfg->wake_data,
10061 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10062 wake_size);
10063 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10064 data_size + wake_size;
10065 memcpy((void *)cfg->wake_mask,
10066 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10067 wake_mask_size);
10068 if (tok) {
10069 cfg->tokens_size = tokens_size;
10070 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10071 }
10072
10073 trig->tcp = cfg;
10074
10075 return 0;
10076 }
10077
10078 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10079 const struct wiphy_wowlan_support *wowlan,
10080 struct nlattr *attr,
10081 struct cfg80211_wowlan *trig)
10082 {
10083 struct nlattr **tb;
10084 int err;
10085
10086 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10087 if (!tb)
10088 return -ENOMEM;
10089
10090 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10091 err = -EOPNOTSUPP;
10092 goto out;
10093 }
10094
10095 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
10096 if (err)
10097 goto out;
10098
10099 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10100 wowlan->max_nd_match_sets);
10101 err = PTR_ERR_OR_ZERO(trig->nd_config);
10102 if (err)
10103 trig->nd_config = NULL;
10104
10105 out:
10106 kfree(tb);
10107 return err;
10108 }
10109
10110 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10111 {
10112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10113 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10114 struct cfg80211_wowlan new_triggers = {};
10115 struct cfg80211_wowlan *ntrig;
10116 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10117 int err, i;
10118 bool prev_enabled = rdev->wiphy.wowlan_config;
10119 bool regular = false;
10120
10121 if (!wowlan)
10122 return -EOPNOTSUPP;
10123
10124 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10125 cfg80211_rdev_free_wowlan(rdev);
10126 rdev->wiphy.wowlan_config = NULL;
10127 goto set_wakeup;
10128 }
10129
10130 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10131 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10132 nl80211_wowlan_policy);
10133 if (err)
10134 return err;
10135
10136 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10137 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10138 return -EINVAL;
10139 new_triggers.any = true;
10140 }
10141
10142 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10143 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10144 return -EINVAL;
10145 new_triggers.disconnect = true;
10146 regular = true;
10147 }
10148
10149 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10150 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10151 return -EINVAL;
10152 new_triggers.magic_pkt = true;
10153 regular = true;
10154 }
10155
10156 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10157 return -EINVAL;
10158
10159 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10160 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10161 return -EINVAL;
10162 new_triggers.gtk_rekey_failure = true;
10163 regular = true;
10164 }
10165
10166 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10167 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10168 return -EINVAL;
10169 new_triggers.eap_identity_req = true;
10170 regular = true;
10171 }
10172
10173 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10174 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10175 return -EINVAL;
10176 new_triggers.four_way_handshake = true;
10177 regular = true;
10178 }
10179
10180 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10181 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10182 return -EINVAL;
10183 new_triggers.rfkill_release = true;
10184 regular = true;
10185 }
10186
10187 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10188 struct nlattr *pat;
10189 int n_patterns = 0;
10190 int rem, pat_len, mask_len, pkt_offset;
10191 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10192
10193 regular = true;
10194
10195 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10196 rem)
10197 n_patterns++;
10198 if (n_patterns > wowlan->n_patterns)
10199 return -EINVAL;
10200
10201 new_triggers.patterns = kcalloc(n_patterns,
10202 sizeof(new_triggers.patterns[0]),
10203 GFP_KERNEL);
10204 if (!new_triggers.patterns)
10205 return -ENOMEM;
10206
10207 new_triggers.n_patterns = n_patterns;
10208 i = 0;
10209
10210 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10211 rem) {
10212 u8 *mask_pat;
10213
10214 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10215 NULL);
10216 err = -EINVAL;
10217 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10218 !pat_tb[NL80211_PKTPAT_PATTERN])
10219 goto error;
10220 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10221 mask_len = DIV_ROUND_UP(pat_len, 8);
10222 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10223 goto error;
10224 if (pat_len > wowlan->pattern_max_len ||
10225 pat_len < wowlan->pattern_min_len)
10226 goto error;
10227
10228 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10229 pkt_offset = 0;
10230 else
10231 pkt_offset = nla_get_u32(
10232 pat_tb[NL80211_PKTPAT_OFFSET]);
10233 if (pkt_offset > wowlan->max_pkt_offset)
10234 goto error;
10235 new_triggers.patterns[i].pkt_offset = pkt_offset;
10236
10237 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10238 if (!mask_pat) {
10239 err = -ENOMEM;
10240 goto error;
10241 }
10242 new_triggers.patterns[i].mask = mask_pat;
10243 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10244 mask_len);
10245 mask_pat += mask_len;
10246 new_triggers.patterns[i].pattern = mask_pat;
10247 new_triggers.patterns[i].pattern_len = pat_len;
10248 memcpy(mask_pat,
10249 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10250 pat_len);
10251 i++;
10252 }
10253 }
10254
10255 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10256 regular = true;
10257 err = nl80211_parse_wowlan_tcp(
10258 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10259 &new_triggers);
10260 if (err)
10261 goto error;
10262 }
10263
10264 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10265 regular = true;
10266 err = nl80211_parse_wowlan_nd(
10267 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10268 &new_triggers);
10269 if (err)
10270 goto error;
10271 }
10272
10273 /* The 'any' trigger means the device continues operating more or less
10274 * as in its normal operation mode and wakes up the host on most of the
10275 * normal interrupts (like packet RX, ...)
10276 * It therefore makes little sense to combine with the more constrained
10277 * wakeup trigger modes.
10278 */
10279 if (new_triggers.any && regular) {
10280 err = -EINVAL;
10281 goto error;
10282 }
10283
10284 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10285 if (!ntrig) {
10286 err = -ENOMEM;
10287 goto error;
10288 }
10289 cfg80211_rdev_free_wowlan(rdev);
10290 rdev->wiphy.wowlan_config = ntrig;
10291
10292 set_wakeup:
10293 if (rdev->ops->set_wakeup &&
10294 prev_enabled != !!rdev->wiphy.wowlan_config)
10295 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10296
10297 return 0;
10298 error:
10299 for (i = 0; i < new_triggers.n_patterns; i++)
10300 kfree(new_triggers.patterns[i].mask);
10301 kfree(new_triggers.patterns);
10302 if (new_triggers.tcp && new_triggers.tcp->sock)
10303 sock_release(new_triggers.tcp->sock);
10304 kfree(new_triggers.tcp);
10305 kfree(new_triggers.nd_config);
10306 return err;
10307 }
10308 #endif
10309
10310 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10311 struct cfg80211_registered_device *rdev)
10312 {
10313 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10314 int i, j, pat_len;
10315 struct cfg80211_coalesce_rules *rule;
10316
10317 if (!rdev->coalesce->n_rules)
10318 return 0;
10319
10320 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10321 if (!nl_rules)
10322 return -ENOBUFS;
10323
10324 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10325 nl_rule = nla_nest_start(msg, i + 1);
10326 if (!nl_rule)
10327 return -ENOBUFS;
10328
10329 rule = &rdev->coalesce->rules[i];
10330 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10331 rule->delay))
10332 return -ENOBUFS;
10333
10334 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10335 rule->condition))
10336 return -ENOBUFS;
10337
10338 nl_pats = nla_nest_start(msg,
10339 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10340 if (!nl_pats)
10341 return -ENOBUFS;
10342
10343 for (j = 0; j < rule->n_patterns; j++) {
10344 nl_pat = nla_nest_start(msg, j + 1);
10345 if (!nl_pat)
10346 return -ENOBUFS;
10347 pat_len = rule->patterns[j].pattern_len;
10348 if (nla_put(msg, NL80211_PKTPAT_MASK,
10349 DIV_ROUND_UP(pat_len, 8),
10350 rule->patterns[j].mask) ||
10351 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10352 rule->patterns[j].pattern) ||
10353 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10354 rule->patterns[j].pkt_offset))
10355 return -ENOBUFS;
10356 nla_nest_end(msg, nl_pat);
10357 }
10358 nla_nest_end(msg, nl_pats);
10359 nla_nest_end(msg, nl_rule);
10360 }
10361 nla_nest_end(msg, nl_rules);
10362
10363 return 0;
10364 }
10365
10366 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10367 {
10368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10369 struct sk_buff *msg;
10370 void *hdr;
10371
10372 if (!rdev->wiphy.coalesce)
10373 return -EOPNOTSUPP;
10374
10375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10376 if (!msg)
10377 return -ENOMEM;
10378
10379 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10380 NL80211_CMD_GET_COALESCE);
10381 if (!hdr)
10382 goto nla_put_failure;
10383
10384 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10385 goto nla_put_failure;
10386
10387 genlmsg_end(msg, hdr);
10388 return genlmsg_reply(msg, info);
10389
10390 nla_put_failure:
10391 nlmsg_free(msg);
10392 return -ENOBUFS;
10393 }
10394
10395 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10396 {
10397 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10398 int i, j;
10399 struct cfg80211_coalesce_rules *rule;
10400
10401 if (!coalesce)
10402 return;
10403
10404 for (i = 0; i < coalesce->n_rules; i++) {
10405 rule = &coalesce->rules[i];
10406 for (j = 0; j < rule->n_patterns; j++)
10407 kfree(rule->patterns[j].mask);
10408 kfree(rule->patterns);
10409 }
10410 kfree(coalesce->rules);
10411 kfree(coalesce);
10412 rdev->coalesce = NULL;
10413 }
10414
10415 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10416 struct nlattr *rule,
10417 struct cfg80211_coalesce_rules *new_rule)
10418 {
10419 int err, i;
10420 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10421 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10422 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10423 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10424
10425 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10426 nl80211_coalesce_policy);
10427 if (err)
10428 return err;
10429
10430 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10431 new_rule->delay =
10432 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10433 if (new_rule->delay > coalesce->max_delay)
10434 return -EINVAL;
10435
10436 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10437 new_rule->condition =
10438 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10439 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10440 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10441 return -EINVAL;
10442
10443 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10444 return -EINVAL;
10445
10446 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10447 rem)
10448 n_patterns++;
10449 if (n_patterns > coalesce->n_patterns)
10450 return -EINVAL;
10451
10452 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10453 GFP_KERNEL);
10454 if (!new_rule->patterns)
10455 return -ENOMEM;
10456
10457 new_rule->n_patterns = n_patterns;
10458 i = 0;
10459
10460 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10461 rem) {
10462 u8 *mask_pat;
10463
10464 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10465 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10466 !pat_tb[NL80211_PKTPAT_PATTERN])
10467 return -EINVAL;
10468 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10469 mask_len = DIV_ROUND_UP(pat_len, 8);
10470 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10471 return -EINVAL;
10472 if (pat_len > coalesce->pattern_max_len ||
10473 pat_len < coalesce->pattern_min_len)
10474 return -EINVAL;
10475
10476 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10477 pkt_offset = 0;
10478 else
10479 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10480 if (pkt_offset > coalesce->max_pkt_offset)
10481 return -EINVAL;
10482 new_rule->patterns[i].pkt_offset = pkt_offset;
10483
10484 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10485 if (!mask_pat)
10486 return -ENOMEM;
10487
10488 new_rule->patterns[i].mask = mask_pat;
10489 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10490 mask_len);
10491
10492 mask_pat += mask_len;
10493 new_rule->patterns[i].pattern = mask_pat;
10494 new_rule->patterns[i].pattern_len = pat_len;
10495 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10496 pat_len);
10497 i++;
10498 }
10499
10500 return 0;
10501 }
10502
10503 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10504 {
10505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10506 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10507 struct cfg80211_coalesce new_coalesce = {};
10508 struct cfg80211_coalesce *n_coalesce;
10509 int err, rem_rule, n_rules = 0, i, j;
10510 struct nlattr *rule;
10511 struct cfg80211_coalesce_rules *tmp_rule;
10512
10513 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10514 return -EOPNOTSUPP;
10515
10516 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10517 cfg80211_rdev_free_coalesce(rdev);
10518 rdev_set_coalesce(rdev, NULL);
10519 return 0;
10520 }
10521
10522 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10523 rem_rule)
10524 n_rules++;
10525 if (n_rules > coalesce->n_rules)
10526 return -EINVAL;
10527
10528 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10529 GFP_KERNEL);
10530 if (!new_coalesce.rules)
10531 return -ENOMEM;
10532
10533 new_coalesce.n_rules = n_rules;
10534 i = 0;
10535
10536 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10537 rem_rule) {
10538 err = nl80211_parse_coalesce_rule(rdev, rule,
10539 &new_coalesce.rules[i]);
10540 if (err)
10541 goto error;
10542
10543 i++;
10544 }
10545
10546 err = rdev_set_coalesce(rdev, &new_coalesce);
10547 if (err)
10548 goto error;
10549
10550 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10551 if (!n_coalesce) {
10552 err = -ENOMEM;
10553 goto error;
10554 }
10555 cfg80211_rdev_free_coalesce(rdev);
10556 rdev->coalesce = n_coalesce;
10557
10558 return 0;
10559 error:
10560 for (i = 0; i < new_coalesce.n_rules; i++) {
10561 tmp_rule = &new_coalesce.rules[i];
10562 for (j = 0; j < tmp_rule->n_patterns; j++)
10563 kfree(tmp_rule->patterns[j].mask);
10564 kfree(tmp_rule->patterns);
10565 }
10566 kfree(new_coalesce.rules);
10567
10568 return err;
10569 }
10570
10571 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10572 {
10573 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10574 struct net_device *dev = info->user_ptr[1];
10575 struct wireless_dev *wdev = dev->ieee80211_ptr;
10576 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10577 struct cfg80211_gtk_rekey_data rekey_data;
10578 int err;
10579
10580 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10581 return -EINVAL;
10582
10583 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10584 info->attrs[NL80211_ATTR_REKEY_DATA],
10585 nl80211_rekey_policy);
10586 if (err)
10587 return err;
10588
10589 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10590 return -ERANGE;
10591 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10592 return -ERANGE;
10593 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10594 return -ERANGE;
10595
10596 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10597 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10598 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10599
10600 wdev_lock(wdev);
10601 if (!wdev->current_bss) {
10602 err = -ENOTCONN;
10603 goto out;
10604 }
10605
10606 if (!rdev->ops->set_rekey_data) {
10607 err = -EOPNOTSUPP;
10608 goto out;
10609 }
10610
10611 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10612 out:
10613 wdev_unlock(wdev);
10614 return err;
10615 }
10616
10617 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10618 struct genl_info *info)
10619 {
10620 struct net_device *dev = info->user_ptr[1];
10621 struct wireless_dev *wdev = dev->ieee80211_ptr;
10622
10623 if (wdev->iftype != NL80211_IFTYPE_AP &&
10624 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10625 return -EINVAL;
10626
10627 if (wdev->ap_unexpected_nlportid)
10628 return -EBUSY;
10629
10630 wdev->ap_unexpected_nlportid = info->snd_portid;
10631 return 0;
10632 }
10633
10634 static int nl80211_probe_client(struct sk_buff *skb,
10635 struct genl_info *info)
10636 {
10637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10638 struct net_device *dev = info->user_ptr[1];
10639 struct wireless_dev *wdev = dev->ieee80211_ptr;
10640 struct sk_buff *msg;
10641 void *hdr;
10642 const u8 *addr;
10643 u64 cookie;
10644 int err;
10645
10646 if (wdev->iftype != NL80211_IFTYPE_AP &&
10647 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10648 return -EOPNOTSUPP;
10649
10650 if (!info->attrs[NL80211_ATTR_MAC])
10651 return -EINVAL;
10652
10653 if (!rdev->ops->probe_client)
10654 return -EOPNOTSUPP;
10655
10656 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10657 if (!msg)
10658 return -ENOMEM;
10659
10660 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10661 NL80211_CMD_PROBE_CLIENT);
10662 if (!hdr) {
10663 err = -ENOBUFS;
10664 goto free_msg;
10665 }
10666
10667 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10668
10669 err = rdev_probe_client(rdev, dev, addr, &cookie);
10670 if (err)
10671 goto free_msg;
10672
10673 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10674 NL80211_ATTR_PAD))
10675 goto nla_put_failure;
10676
10677 genlmsg_end(msg, hdr);
10678
10679 return genlmsg_reply(msg, info);
10680
10681 nla_put_failure:
10682 err = -ENOBUFS;
10683 free_msg:
10684 nlmsg_free(msg);
10685 return err;
10686 }
10687
10688 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10689 {
10690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10691 struct cfg80211_beacon_registration *reg, *nreg;
10692 int rv;
10693
10694 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10695 return -EOPNOTSUPP;
10696
10697 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10698 if (!nreg)
10699 return -ENOMEM;
10700
10701 /* First, check if already registered. */
10702 spin_lock_bh(&rdev->beacon_registrations_lock);
10703 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10704 if (reg->nlportid == info->snd_portid) {
10705 rv = -EALREADY;
10706 goto out_err;
10707 }
10708 }
10709 /* Add it to the list */
10710 nreg->nlportid = info->snd_portid;
10711 list_add(&nreg->list, &rdev->beacon_registrations);
10712
10713 spin_unlock_bh(&rdev->beacon_registrations_lock);
10714
10715 return 0;
10716 out_err:
10717 spin_unlock_bh(&rdev->beacon_registrations_lock);
10718 kfree(nreg);
10719 return rv;
10720 }
10721
10722 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10723 {
10724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10725 struct wireless_dev *wdev = info->user_ptr[1];
10726 int err;
10727
10728 if (!rdev->ops->start_p2p_device)
10729 return -EOPNOTSUPP;
10730
10731 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10732 return -EOPNOTSUPP;
10733
10734 if (wdev_running(wdev))
10735 return 0;
10736
10737 if (rfkill_blocked(rdev->rfkill))
10738 return -ERFKILL;
10739
10740 err = rdev_start_p2p_device(rdev, wdev);
10741 if (err)
10742 return err;
10743
10744 wdev->is_running = true;
10745 rdev->opencount++;
10746
10747 return 0;
10748 }
10749
10750 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10751 {
10752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10753 struct wireless_dev *wdev = info->user_ptr[1];
10754
10755 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10756 return -EOPNOTSUPP;
10757
10758 if (!rdev->ops->stop_p2p_device)
10759 return -EOPNOTSUPP;
10760
10761 cfg80211_stop_p2p_device(rdev, wdev);
10762
10763 return 0;
10764 }
10765
10766 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10767 {
10768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10769 struct wireless_dev *wdev = info->user_ptr[1];
10770 struct cfg80211_nan_conf conf = {};
10771 int err;
10772
10773 if (wdev->iftype != NL80211_IFTYPE_NAN)
10774 return -EOPNOTSUPP;
10775
10776 if (wdev_running(wdev))
10777 return -EEXIST;
10778
10779 if (rfkill_blocked(rdev->rfkill))
10780 return -ERFKILL;
10781
10782 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10783 return -EINVAL;
10784
10785 conf.master_pref =
10786 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10787 if (!conf.master_pref)
10788 return -EINVAL;
10789
10790 if (info->attrs[NL80211_ATTR_BANDS]) {
10791 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
10792
10793 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
10794 return -EOPNOTSUPP;
10795
10796 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
10797 return -EINVAL;
10798
10799 conf.bands = bands;
10800 }
10801
10802 err = rdev_start_nan(rdev, wdev, &conf);
10803 if (err)
10804 return err;
10805
10806 wdev->is_running = true;
10807 rdev->opencount++;
10808
10809 return 0;
10810 }
10811
10812 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10813 {
10814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10815 struct wireless_dev *wdev = info->user_ptr[1];
10816
10817 if (wdev->iftype != NL80211_IFTYPE_NAN)
10818 return -EOPNOTSUPP;
10819
10820 cfg80211_stop_nan(rdev, wdev);
10821
10822 return 0;
10823 }
10824
10825 static int validate_nan_filter(struct nlattr *filter_attr)
10826 {
10827 struct nlattr *attr;
10828 int len = 0, n_entries = 0, rem;
10829
10830 nla_for_each_nested(attr, filter_attr, rem) {
10831 len += nla_len(attr);
10832 n_entries++;
10833 }
10834
10835 if (len >= U8_MAX)
10836 return -EINVAL;
10837
10838 return n_entries;
10839 }
10840
10841 static int handle_nan_filter(struct nlattr *attr_filter,
10842 struct cfg80211_nan_func *func,
10843 bool tx)
10844 {
10845 struct nlattr *attr;
10846 int n_entries, rem, i;
10847 struct cfg80211_nan_func_filter *filter;
10848
10849 n_entries = validate_nan_filter(attr_filter);
10850 if (n_entries < 0)
10851 return n_entries;
10852
10853 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10854
10855 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10856 if (!filter)
10857 return -ENOMEM;
10858
10859 i = 0;
10860 nla_for_each_nested(attr, attr_filter, rem) {
10861 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10862 filter[i].len = nla_len(attr);
10863 i++;
10864 }
10865 if (tx) {
10866 func->num_tx_filters = n_entries;
10867 func->tx_filters = filter;
10868 } else {
10869 func->num_rx_filters = n_entries;
10870 func->rx_filters = filter;
10871 }
10872
10873 return 0;
10874 }
10875
10876 static int nl80211_nan_add_func(struct sk_buff *skb,
10877 struct genl_info *info)
10878 {
10879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10880 struct wireless_dev *wdev = info->user_ptr[1];
10881 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10882 struct cfg80211_nan_func *func;
10883 struct sk_buff *msg = NULL;
10884 void *hdr = NULL;
10885 int err = 0;
10886
10887 if (wdev->iftype != NL80211_IFTYPE_NAN)
10888 return -EOPNOTSUPP;
10889
10890 if (!wdev_running(wdev))
10891 return -ENOTCONN;
10892
10893 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10894 return -EINVAL;
10895
10896 if (wdev->owner_nlportid &&
10897 wdev->owner_nlportid != info->snd_portid)
10898 return -ENOTCONN;
10899
10900 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10901 info->attrs[NL80211_ATTR_NAN_FUNC],
10902 nl80211_nan_func_policy);
10903 if (err)
10904 return err;
10905
10906 func = kzalloc(sizeof(*func), GFP_KERNEL);
10907 if (!func)
10908 return -ENOMEM;
10909
10910 func->cookie = wdev->wiphy->cookie_counter++;
10911
10912 if (!tb[NL80211_NAN_FUNC_TYPE] ||
10913 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10914 err = -EINVAL;
10915 goto out;
10916 }
10917
10918
10919 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10920
10921 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10922 err = -EINVAL;
10923 goto out;
10924 }
10925
10926 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10927 sizeof(func->service_id));
10928
10929 func->close_range =
10930 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10931
10932 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10933 func->serv_spec_info_len =
10934 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10935 func->serv_spec_info =
10936 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10937 func->serv_spec_info_len,
10938 GFP_KERNEL);
10939 if (!func->serv_spec_info) {
10940 err = -ENOMEM;
10941 goto out;
10942 }
10943 }
10944
10945 if (tb[NL80211_NAN_FUNC_TTL])
10946 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10947
10948 switch (func->type) {
10949 case NL80211_NAN_FUNC_PUBLISH:
10950 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10951 err = -EINVAL;
10952 goto out;
10953 }
10954
10955 func->publish_type =
10956 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10957 func->publish_bcast =
10958 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10959
10960 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10961 func->publish_bcast) {
10962 err = -EINVAL;
10963 goto out;
10964 }
10965 break;
10966 case NL80211_NAN_FUNC_SUBSCRIBE:
10967 func->subscribe_active =
10968 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10969 break;
10970 case NL80211_NAN_FUNC_FOLLOW_UP:
10971 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10972 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10973 err = -EINVAL;
10974 goto out;
10975 }
10976
10977 func->followup_id =
10978 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10979 func->followup_reqid =
10980 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10981 memcpy(func->followup_dest.addr,
10982 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10983 sizeof(func->followup_dest.addr));
10984 if (func->ttl) {
10985 err = -EINVAL;
10986 goto out;
10987 }
10988 break;
10989 default:
10990 err = -EINVAL;
10991 goto out;
10992 }
10993
10994 if (tb[NL80211_NAN_FUNC_SRF]) {
10995 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10996
10997 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10998 tb[NL80211_NAN_FUNC_SRF],
10999 nl80211_nan_srf_policy);
11000 if (err)
11001 goto out;
11002
11003 func->srf_include =
11004 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11005
11006 if (srf_tb[NL80211_NAN_SRF_BF]) {
11007 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11008 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11009 err = -EINVAL;
11010 goto out;
11011 }
11012
11013 func->srf_bf_len =
11014 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11015 func->srf_bf =
11016 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11017 func->srf_bf_len, GFP_KERNEL);
11018 if (!func->srf_bf) {
11019 err = -ENOMEM;
11020 goto out;
11021 }
11022
11023 func->srf_bf_idx =
11024 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11025 } else {
11026 struct nlattr *attr, *mac_attr =
11027 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11028 int n_entries, rem, i = 0;
11029
11030 if (!mac_attr) {
11031 err = -EINVAL;
11032 goto out;
11033 }
11034
11035 n_entries = validate_acl_mac_addrs(mac_attr);
11036 if (n_entries <= 0) {
11037 err = -EINVAL;
11038 goto out;
11039 }
11040
11041 func->srf_num_macs = n_entries;
11042 func->srf_macs =
11043 kzalloc(sizeof(*func->srf_macs) * n_entries,
11044 GFP_KERNEL);
11045 if (!func->srf_macs) {
11046 err = -ENOMEM;
11047 goto out;
11048 }
11049
11050 nla_for_each_nested(attr, mac_attr, rem)
11051 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11052 sizeof(*func->srf_macs));
11053 }
11054 }
11055
11056 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11057 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11058 func, true);
11059 if (err)
11060 goto out;
11061 }
11062
11063 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11064 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11065 func, false);
11066 if (err)
11067 goto out;
11068 }
11069
11070 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11071 if (!msg) {
11072 err = -ENOMEM;
11073 goto out;
11074 }
11075
11076 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11077 NL80211_CMD_ADD_NAN_FUNCTION);
11078 /* This can't really happen - we just allocated 4KB */
11079 if (WARN_ON(!hdr)) {
11080 err = -ENOMEM;
11081 goto out;
11082 }
11083
11084 err = rdev_add_nan_func(rdev, wdev, func);
11085 out:
11086 if (err < 0) {
11087 cfg80211_free_nan_func(func);
11088 nlmsg_free(msg);
11089 return err;
11090 }
11091
11092 /* propagate the instance id and cookie to userspace */
11093 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11094 NL80211_ATTR_PAD))
11095 goto nla_put_failure;
11096
11097 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11098 if (!func_attr)
11099 goto nla_put_failure;
11100
11101 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11102 func->instance_id))
11103 goto nla_put_failure;
11104
11105 nla_nest_end(msg, func_attr);
11106
11107 genlmsg_end(msg, hdr);
11108 return genlmsg_reply(msg, info);
11109
11110 nla_put_failure:
11111 nlmsg_free(msg);
11112 return -ENOBUFS;
11113 }
11114
11115 static int nl80211_nan_del_func(struct sk_buff *skb,
11116 struct genl_info *info)
11117 {
11118 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11119 struct wireless_dev *wdev = info->user_ptr[1];
11120 u64 cookie;
11121
11122 if (wdev->iftype != NL80211_IFTYPE_NAN)
11123 return -EOPNOTSUPP;
11124
11125 if (!wdev_running(wdev))
11126 return -ENOTCONN;
11127
11128 if (!info->attrs[NL80211_ATTR_COOKIE])
11129 return -EINVAL;
11130
11131 if (wdev->owner_nlportid &&
11132 wdev->owner_nlportid != info->snd_portid)
11133 return -ENOTCONN;
11134
11135 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11136
11137 rdev_del_nan_func(rdev, wdev, cookie);
11138
11139 return 0;
11140 }
11141
11142 static int nl80211_nan_change_config(struct sk_buff *skb,
11143 struct genl_info *info)
11144 {
11145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11146 struct wireless_dev *wdev = info->user_ptr[1];
11147 struct cfg80211_nan_conf conf = {};
11148 u32 changed = 0;
11149
11150 if (wdev->iftype != NL80211_IFTYPE_NAN)
11151 return -EOPNOTSUPP;
11152
11153 if (!wdev_running(wdev))
11154 return -ENOTCONN;
11155
11156 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11157 conf.master_pref =
11158 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11159 if (conf.master_pref <= 1 || conf.master_pref == 255)
11160 return -EINVAL;
11161
11162 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11163 }
11164
11165 if (info->attrs[NL80211_ATTR_BANDS]) {
11166 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11167
11168 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11169 return -EOPNOTSUPP;
11170
11171 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11172 return -EINVAL;
11173
11174 conf.bands = bands;
11175 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11176 }
11177
11178 if (!changed)
11179 return -EINVAL;
11180
11181 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11182 }
11183
11184 void cfg80211_nan_match(struct wireless_dev *wdev,
11185 struct cfg80211_nan_match_params *match, gfp_t gfp)
11186 {
11187 struct wiphy *wiphy = wdev->wiphy;
11188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11189 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11190 struct sk_buff *msg;
11191 void *hdr;
11192
11193 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11194 return;
11195
11196 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11197 if (!msg)
11198 return;
11199
11200 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11201 if (!hdr) {
11202 nlmsg_free(msg);
11203 return;
11204 }
11205
11206 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11207 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11208 wdev->netdev->ifindex)) ||
11209 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11210 NL80211_ATTR_PAD))
11211 goto nla_put_failure;
11212
11213 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11214 NL80211_ATTR_PAD) ||
11215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11216 goto nla_put_failure;
11217
11218 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11219 if (!match_attr)
11220 goto nla_put_failure;
11221
11222 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11223 if (!local_func_attr)
11224 goto nla_put_failure;
11225
11226 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11227 goto nla_put_failure;
11228
11229 nla_nest_end(msg, local_func_attr);
11230
11231 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11232 if (!peer_func_attr)
11233 goto nla_put_failure;
11234
11235 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11236 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11237 goto nla_put_failure;
11238
11239 if (match->info && match->info_len &&
11240 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11241 match->info))
11242 goto nla_put_failure;
11243
11244 nla_nest_end(msg, peer_func_attr);
11245 nla_nest_end(msg, match_attr);
11246 genlmsg_end(msg, hdr);
11247
11248 if (!wdev->owner_nlportid)
11249 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11250 msg, 0, NL80211_MCGRP_NAN, gfp);
11251 else
11252 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11253 wdev->owner_nlportid);
11254
11255 return;
11256
11257 nla_put_failure:
11258 nlmsg_free(msg);
11259 }
11260 EXPORT_SYMBOL(cfg80211_nan_match);
11261
11262 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11263 u8 inst_id,
11264 enum nl80211_nan_func_term_reason reason,
11265 u64 cookie, gfp_t gfp)
11266 {
11267 struct wiphy *wiphy = wdev->wiphy;
11268 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11269 struct sk_buff *msg;
11270 struct nlattr *func_attr;
11271 void *hdr;
11272
11273 if (WARN_ON(!inst_id))
11274 return;
11275
11276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11277 if (!msg)
11278 return;
11279
11280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11281 if (!hdr) {
11282 nlmsg_free(msg);
11283 return;
11284 }
11285
11286 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11287 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11288 wdev->netdev->ifindex)) ||
11289 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11290 NL80211_ATTR_PAD))
11291 goto nla_put_failure;
11292
11293 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11294 NL80211_ATTR_PAD))
11295 goto nla_put_failure;
11296
11297 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11298 if (!func_attr)
11299 goto nla_put_failure;
11300
11301 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11302 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11303 goto nla_put_failure;
11304
11305 nla_nest_end(msg, func_attr);
11306 genlmsg_end(msg, hdr);
11307
11308 if (!wdev->owner_nlportid)
11309 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11310 msg, 0, NL80211_MCGRP_NAN, gfp);
11311 else
11312 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11313 wdev->owner_nlportid);
11314
11315 return;
11316
11317 nla_put_failure:
11318 nlmsg_free(msg);
11319 }
11320 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11321
11322 static int nl80211_get_protocol_features(struct sk_buff *skb,
11323 struct genl_info *info)
11324 {
11325 void *hdr;
11326 struct sk_buff *msg;
11327
11328 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11329 if (!msg)
11330 return -ENOMEM;
11331
11332 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11333 NL80211_CMD_GET_PROTOCOL_FEATURES);
11334 if (!hdr)
11335 goto nla_put_failure;
11336
11337 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11338 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11339 goto nla_put_failure;
11340
11341 genlmsg_end(msg, hdr);
11342 return genlmsg_reply(msg, info);
11343
11344 nla_put_failure:
11345 kfree_skb(msg);
11346 return -ENOBUFS;
11347 }
11348
11349 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11350 {
11351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11352 struct cfg80211_update_ft_ies_params ft_params;
11353 struct net_device *dev = info->user_ptr[1];
11354
11355 if (!rdev->ops->update_ft_ies)
11356 return -EOPNOTSUPP;
11357
11358 if (!info->attrs[NL80211_ATTR_MDID] ||
11359 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11360 return -EINVAL;
11361
11362 memset(&ft_params, 0, sizeof(ft_params));
11363 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11364 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11365 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11366
11367 return rdev_update_ft_ies(rdev, dev, &ft_params);
11368 }
11369
11370 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11371 struct genl_info *info)
11372 {
11373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11374 struct wireless_dev *wdev = info->user_ptr[1];
11375 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11376 u16 duration;
11377 int ret;
11378
11379 if (!rdev->ops->crit_proto_start)
11380 return -EOPNOTSUPP;
11381
11382 if (WARN_ON(!rdev->ops->crit_proto_stop))
11383 return -EINVAL;
11384
11385 if (rdev->crit_proto_nlportid)
11386 return -EBUSY;
11387
11388 /* determine protocol if provided */
11389 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11390 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11391
11392 if (proto >= NUM_NL80211_CRIT_PROTO)
11393 return -EINVAL;
11394
11395 /* timeout must be provided */
11396 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11397 return -EINVAL;
11398
11399 duration =
11400 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11401
11402 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11403 return -ERANGE;
11404
11405 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11406 if (!ret)
11407 rdev->crit_proto_nlportid = info->snd_portid;
11408
11409 return ret;
11410 }
11411
11412 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11413 struct genl_info *info)
11414 {
11415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11416 struct wireless_dev *wdev = info->user_ptr[1];
11417
11418 if (!rdev->ops->crit_proto_stop)
11419 return -EOPNOTSUPP;
11420
11421 if (rdev->crit_proto_nlportid) {
11422 rdev->crit_proto_nlportid = 0;
11423 rdev_crit_proto_stop(rdev, wdev);
11424 }
11425 return 0;
11426 }
11427
11428 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11429 {
11430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11431 struct wireless_dev *wdev =
11432 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11433 int i, err;
11434 u32 vid, subcmd;
11435
11436 if (!rdev->wiphy.vendor_commands)
11437 return -EOPNOTSUPP;
11438
11439 if (IS_ERR(wdev)) {
11440 err = PTR_ERR(wdev);
11441 if (err != -EINVAL)
11442 return err;
11443 wdev = NULL;
11444 } else if (wdev->wiphy != &rdev->wiphy) {
11445 return -EINVAL;
11446 }
11447
11448 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11449 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11450 return -EINVAL;
11451
11452 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11453 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11454 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11455 const struct wiphy_vendor_command *vcmd;
11456 void *data = NULL;
11457 int len = 0;
11458
11459 vcmd = &rdev->wiphy.vendor_commands[i];
11460
11461 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11462 continue;
11463
11464 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11465 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11466 if (!wdev)
11467 return -EINVAL;
11468 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11469 !wdev->netdev)
11470 return -EINVAL;
11471
11472 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11473 if (!wdev_running(wdev))
11474 return -ENETDOWN;
11475 }
11476
11477 if (!vcmd->doit)
11478 return -EOPNOTSUPP;
11479 } else {
11480 wdev = NULL;
11481 }
11482
11483 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11484 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11485 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11486 }
11487
11488 rdev->cur_cmd_info = info;
11489 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11490 data, len);
11491 rdev->cur_cmd_info = NULL;
11492 return err;
11493 }
11494
11495 return -EOPNOTSUPP;
11496 }
11497
11498 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11499 struct netlink_callback *cb,
11500 struct cfg80211_registered_device **rdev,
11501 struct wireless_dev **wdev)
11502 {
11503 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11504 u32 vid, subcmd;
11505 unsigned int i;
11506 int vcmd_idx = -1;
11507 int err;
11508 void *data = NULL;
11509 unsigned int data_len = 0;
11510
11511 rtnl_lock();
11512
11513 if (cb->args[0]) {
11514 /* subtract the 1 again here */
11515 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11516 struct wireless_dev *tmp;
11517
11518 if (!wiphy) {
11519 err = -ENODEV;
11520 goto out_unlock;
11521 }
11522 *rdev = wiphy_to_rdev(wiphy);
11523 *wdev = NULL;
11524
11525 if (cb->args[1]) {
11526 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11527 if (tmp->identifier == cb->args[1] - 1) {
11528 *wdev = tmp;
11529 break;
11530 }
11531 }
11532 }
11533
11534 /* keep rtnl locked in successful case */
11535 return 0;
11536 }
11537
11538 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11539 attrbuf, nl80211_fam.maxattr, nl80211_policy);
11540 if (err)
11541 goto out_unlock;
11542
11543 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11544 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11545 err = -EINVAL;
11546 goto out_unlock;
11547 }
11548
11549 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11550 if (IS_ERR(*wdev))
11551 *wdev = NULL;
11552
11553 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11554 if (IS_ERR(*rdev)) {
11555 err = PTR_ERR(*rdev);
11556 goto out_unlock;
11557 }
11558
11559 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11560 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11561
11562 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11563 const struct wiphy_vendor_command *vcmd;
11564
11565 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11566
11567 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11568 continue;
11569
11570 if (!vcmd->dumpit) {
11571 err = -EOPNOTSUPP;
11572 goto out_unlock;
11573 }
11574
11575 vcmd_idx = i;
11576 break;
11577 }
11578
11579 if (vcmd_idx < 0) {
11580 err = -EOPNOTSUPP;
11581 goto out_unlock;
11582 }
11583
11584 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11585 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11586 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11587 }
11588
11589 /* 0 is the first index - add 1 to parse only once */
11590 cb->args[0] = (*rdev)->wiphy_idx + 1;
11591 /* add 1 to know if it was NULL */
11592 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11593 cb->args[2] = vcmd_idx;
11594 cb->args[3] = (unsigned long)data;
11595 cb->args[4] = data_len;
11596
11597 /* keep rtnl locked in successful case */
11598 return 0;
11599 out_unlock:
11600 rtnl_unlock();
11601 return err;
11602 }
11603
11604 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11605 struct netlink_callback *cb)
11606 {
11607 struct cfg80211_registered_device *rdev;
11608 struct wireless_dev *wdev;
11609 unsigned int vcmd_idx;
11610 const struct wiphy_vendor_command *vcmd;
11611 void *data;
11612 int data_len;
11613 int err;
11614 struct nlattr *vendor_data;
11615
11616 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11617 if (err)
11618 return err;
11619
11620 vcmd_idx = cb->args[2];
11621 data = (void *)cb->args[3];
11622 data_len = cb->args[4];
11623 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11624
11625 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11626 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11627 if (!wdev)
11628 return -EINVAL;
11629 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11630 !wdev->netdev)
11631 return -EINVAL;
11632
11633 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11634 if (!wdev_running(wdev))
11635 return -ENETDOWN;
11636 }
11637 }
11638
11639 while (1) {
11640 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11641 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11642 NL80211_CMD_VENDOR);
11643 if (!hdr)
11644 break;
11645
11646 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11647 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11648 wdev_id(wdev),
11649 NL80211_ATTR_PAD))) {
11650 genlmsg_cancel(skb, hdr);
11651 break;
11652 }
11653
11654 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11655 if (!vendor_data) {
11656 genlmsg_cancel(skb, hdr);
11657 break;
11658 }
11659
11660 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11661 (unsigned long *)&cb->args[5]);
11662 nla_nest_end(skb, vendor_data);
11663
11664 if (err == -ENOBUFS || err == -ENOENT) {
11665 genlmsg_cancel(skb, hdr);
11666 break;
11667 } else if (err) {
11668 genlmsg_cancel(skb, hdr);
11669 goto out;
11670 }
11671
11672 genlmsg_end(skb, hdr);
11673 }
11674
11675 err = skb->len;
11676 out:
11677 rtnl_unlock();
11678 return err;
11679 }
11680
11681 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11682 enum nl80211_commands cmd,
11683 enum nl80211_attrs attr,
11684 int approxlen)
11685 {
11686 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11687
11688 if (WARN_ON(!rdev->cur_cmd_info))
11689 return NULL;
11690
11691 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11692 rdev->cur_cmd_info->snd_portid,
11693 rdev->cur_cmd_info->snd_seq,
11694 cmd, attr, NULL, GFP_KERNEL);
11695 }
11696 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11697
11698 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11699 {
11700 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11701 void *hdr = ((void **)skb->cb)[1];
11702 struct nlattr *data = ((void **)skb->cb)[2];
11703
11704 /* clear CB data for netlink core to own from now on */
11705 memset(skb->cb, 0, sizeof(skb->cb));
11706
11707 if (WARN_ON(!rdev->cur_cmd_info)) {
11708 kfree_skb(skb);
11709 return -EINVAL;
11710 }
11711
11712 nla_nest_end(skb, data);
11713 genlmsg_end(skb, hdr);
11714 return genlmsg_reply(skb, rdev->cur_cmd_info);
11715 }
11716 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11717
11718 static int nl80211_set_qos_map(struct sk_buff *skb,
11719 struct genl_info *info)
11720 {
11721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11722 struct cfg80211_qos_map *qos_map = NULL;
11723 struct net_device *dev = info->user_ptr[1];
11724 u8 *pos, len, num_des, des_len, des;
11725 int ret;
11726
11727 if (!rdev->ops->set_qos_map)
11728 return -EOPNOTSUPP;
11729
11730 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11731 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11732 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11733
11734 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11735 len > IEEE80211_QOS_MAP_LEN_MAX)
11736 return -EINVAL;
11737
11738 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11739 if (!qos_map)
11740 return -ENOMEM;
11741
11742 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11743 if (num_des) {
11744 des_len = num_des *
11745 sizeof(struct cfg80211_dscp_exception);
11746 memcpy(qos_map->dscp_exception, pos, des_len);
11747 qos_map->num_des = num_des;
11748 for (des = 0; des < num_des; des++) {
11749 if (qos_map->dscp_exception[des].up > 7) {
11750 kfree(qos_map);
11751 return -EINVAL;
11752 }
11753 }
11754 pos += des_len;
11755 }
11756 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11757 }
11758
11759 wdev_lock(dev->ieee80211_ptr);
11760 ret = nl80211_key_allowed(dev->ieee80211_ptr);
11761 if (!ret)
11762 ret = rdev_set_qos_map(rdev, dev, qos_map);
11763 wdev_unlock(dev->ieee80211_ptr);
11764
11765 kfree(qos_map);
11766 return ret;
11767 }
11768
11769 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11770 {
11771 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11772 struct net_device *dev = info->user_ptr[1];
11773 struct wireless_dev *wdev = dev->ieee80211_ptr;
11774 const u8 *peer;
11775 u8 tsid, up;
11776 u16 admitted_time = 0;
11777 int err;
11778
11779 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11780 return -EOPNOTSUPP;
11781
11782 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11783 !info->attrs[NL80211_ATTR_USER_PRIO])
11784 return -EINVAL;
11785
11786 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11787 if (tsid >= IEEE80211_NUM_TIDS)
11788 return -EINVAL;
11789
11790 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11791 if (up >= IEEE80211_NUM_UPS)
11792 return -EINVAL;
11793
11794 /* WMM uses TIDs 0-7 even for TSPEC */
11795 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11796 /* TODO: handle 802.11 TSPEC/admission control
11797 * need more attributes for that (e.g. BA session requirement);
11798 * change the WMM adminssion test above to allow both then
11799 */
11800 return -EINVAL;
11801 }
11802
11803 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11804
11805 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11806 admitted_time =
11807 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11808 if (!admitted_time)
11809 return -EINVAL;
11810 }
11811
11812 wdev_lock(wdev);
11813 switch (wdev->iftype) {
11814 case NL80211_IFTYPE_STATION:
11815 case NL80211_IFTYPE_P2P_CLIENT:
11816 if (wdev->current_bss)
11817 break;
11818 err = -ENOTCONN;
11819 goto out;
11820 default:
11821 err = -EOPNOTSUPP;
11822 goto out;
11823 }
11824
11825 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11826
11827 out:
11828 wdev_unlock(wdev);
11829 return err;
11830 }
11831
11832 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11833 {
11834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11835 struct net_device *dev = info->user_ptr[1];
11836 struct wireless_dev *wdev = dev->ieee80211_ptr;
11837 const u8 *peer;
11838 u8 tsid;
11839 int err;
11840
11841 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11842 return -EINVAL;
11843
11844 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11845 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11846
11847 wdev_lock(wdev);
11848 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11849 wdev_unlock(wdev);
11850
11851 return err;
11852 }
11853
11854 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11855 struct genl_info *info)
11856 {
11857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11858 struct net_device *dev = info->user_ptr[1];
11859 struct wireless_dev *wdev = dev->ieee80211_ptr;
11860 struct cfg80211_chan_def chandef = {};
11861 const u8 *addr;
11862 u8 oper_class;
11863 int err;
11864
11865 if (!rdev->ops->tdls_channel_switch ||
11866 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11867 return -EOPNOTSUPP;
11868
11869 switch (dev->ieee80211_ptr->iftype) {
11870 case NL80211_IFTYPE_STATION:
11871 case NL80211_IFTYPE_P2P_CLIENT:
11872 break;
11873 default:
11874 return -EOPNOTSUPP;
11875 }
11876
11877 if (!info->attrs[NL80211_ATTR_MAC] ||
11878 !info->attrs[NL80211_ATTR_OPER_CLASS])
11879 return -EINVAL;
11880
11881 err = nl80211_parse_chandef(rdev, info, &chandef);
11882 if (err)
11883 return err;
11884
11885 /*
11886 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11887 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11888 * specification is not defined for them.
11889 */
11890 if (chandef.chan->band == NL80211_BAND_2GHZ &&
11891 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11892 chandef.width != NL80211_CHAN_WIDTH_20)
11893 return -EINVAL;
11894
11895 /* we will be active on the TDLS link */
11896 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11897 wdev->iftype))
11898 return -EINVAL;
11899
11900 /* don't allow switching to DFS channels */
11901 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11902 return -EINVAL;
11903
11904 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11905 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11906
11907 wdev_lock(wdev);
11908 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11909 wdev_unlock(wdev);
11910
11911 return err;
11912 }
11913
11914 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11915 struct genl_info *info)
11916 {
11917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11918 struct net_device *dev = info->user_ptr[1];
11919 struct wireless_dev *wdev = dev->ieee80211_ptr;
11920 const u8 *addr;
11921
11922 if (!rdev->ops->tdls_channel_switch ||
11923 !rdev->ops->tdls_cancel_channel_switch ||
11924 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11925 return -EOPNOTSUPP;
11926
11927 switch (dev->ieee80211_ptr->iftype) {
11928 case NL80211_IFTYPE_STATION:
11929 case NL80211_IFTYPE_P2P_CLIENT:
11930 break;
11931 default:
11932 return -EOPNOTSUPP;
11933 }
11934
11935 if (!info->attrs[NL80211_ATTR_MAC])
11936 return -EINVAL;
11937
11938 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11939
11940 wdev_lock(wdev);
11941 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11942 wdev_unlock(wdev);
11943
11944 return 0;
11945 }
11946
11947 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11948 struct genl_info *info)
11949 {
11950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11951 struct net_device *dev = info->user_ptr[1];
11952 struct wireless_dev *wdev = dev->ieee80211_ptr;
11953 const struct nlattr *nla;
11954 bool enabled;
11955
11956 if (!rdev->ops->set_multicast_to_unicast)
11957 return -EOPNOTSUPP;
11958
11959 if (wdev->iftype != NL80211_IFTYPE_AP &&
11960 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11961 return -EOPNOTSUPP;
11962
11963 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11964 enabled = nla_get_flag(nla);
11965
11966 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11967 }
11968
11969 #define NL80211_FLAG_NEED_WIPHY 0x01
11970 #define NL80211_FLAG_NEED_NETDEV 0x02
11971 #define NL80211_FLAG_NEED_RTNL 0x04
11972 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11973 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11974 NL80211_FLAG_CHECK_NETDEV_UP)
11975 #define NL80211_FLAG_NEED_WDEV 0x10
11976 /* If a netdev is associated, it must be UP, P2P must be started */
11977 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11978 NL80211_FLAG_CHECK_NETDEV_UP)
11979 #define NL80211_FLAG_CLEAR_SKB 0x20
11980
11981 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11982 struct genl_info *info)
11983 {
11984 struct cfg80211_registered_device *rdev;
11985 struct wireless_dev *wdev;
11986 struct net_device *dev;
11987 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11988
11989 if (rtnl)
11990 rtnl_lock();
11991
11992 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11993 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11994 if (IS_ERR(rdev)) {
11995 if (rtnl)
11996 rtnl_unlock();
11997 return PTR_ERR(rdev);
11998 }
11999 info->user_ptr[0] = rdev;
12000 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12001 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12002 ASSERT_RTNL();
12003
12004 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12005 info->attrs);
12006 if (IS_ERR(wdev)) {
12007 if (rtnl)
12008 rtnl_unlock();
12009 return PTR_ERR(wdev);
12010 }
12011
12012 dev = wdev->netdev;
12013 rdev = wiphy_to_rdev(wdev->wiphy);
12014
12015 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12016 if (!dev) {
12017 if (rtnl)
12018 rtnl_unlock();
12019 return -EINVAL;
12020 }
12021
12022 info->user_ptr[1] = dev;
12023 } else {
12024 info->user_ptr[1] = wdev;
12025 }
12026
12027 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12028 !wdev_running(wdev)) {
12029 if (rtnl)
12030 rtnl_unlock();
12031 return -ENETDOWN;
12032 }
12033
12034 if (dev)
12035 dev_hold(dev);
12036
12037 info->user_ptr[0] = rdev;
12038 }
12039
12040 return 0;
12041 }
12042
12043 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12044 struct genl_info *info)
12045 {
12046 if (info->user_ptr[1]) {
12047 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12048 struct wireless_dev *wdev = info->user_ptr[1];
12049
12050 if (wdev->netdev)
12051 dev_put(wdev->netdev);
12052 } else {
12053 dev_put(info->user_ptr[1]);
12054 }
12055 }
12056
12057 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12058 rtnl_unlock();
12059
12060 /* If needed, clear the netlink message payload from the SKB
12061 * as it might contain key data that shouldn't stick around on
12062 * the heap after the SKB is freed. The netlink message header
12063 * is still needed for further processing, so leave it intact.
12064 */
12065 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12066 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12067
12068 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12069 }
12070 }
12071
12072 static const struct genl_ops nl80211_ops[] = {
12073 {
12074 .cmd = NL80211_CMD_GET_WIPHY,
12075 .doit = nl80211_get_wiphy,
12076 .dumpit = nl80211_dump_wiphy,
12077 .done = nl80211_dump_wiphy_done,
12078 .policy = nl80211_policy,
12079 /* can be retrieved by unprivileged users */
12080 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12081 NL80211_FLAG_NEED_RTNL,
12082 },
12083 {
12084 .cmd = NL80211_CMD_SET_WIPHY,
12085 .doit = nl80211_set_wiphy,
12086 .policy = nl80211_policy,
12087 .flags = GENL_UNS_ADMIN_PERM,
12088 .internal_flags = NL80211_FLAG_NEED_RTNL,
12089 },
12090 {
12091 .cmd = NL80211_CMD_GET_INTERFACE,
12092 .doit = nl80211_get_interface,
12093 .dumpit = nl80211_dump_interface,
12094 .policy = nl80211_policy,
12095 /* can be retrieved by unprivileged users */
12096 .internal_flags = NL80211_FLAG_NEED_WDEV |
12097 NL80211_FLAG_NEED_RTNL,
12098 },
12099 {
12100 .cmd = NL80211_CMD_SET_INTERFACE,
12101 .doit = nl80211_set_interface,
12102 .policy = nl80211_policy,
12103 .flags = GENL_UNS_ADMIN_PERM,
12104 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12105 NL80211_FLAG_NEED_RTNL,
12106 },
12107 {
12108 .cmd = NL80211_CMD_NEW_INTERFACE,
12109 .doit = nl80211_new_interface,
12110 .policy = nl80211_policy,
12111 .flags = GENL_UNS_ADMIN_PERM,
12112 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12113 NL80211_FLAG_NEED_RTNL,
12114 },
12115 {
12116 .cmd = NL80211_CMD_DEL_INTERFACE,
12117 .doit = nl80211_del_interface,
12118 .policy = nl80211_policy,
12119 .flags = GENL_UNS_ADMIN_PERM,
12120 .internal_flags = NL80211_FLAG_NEED_WDEV |
12121 NL80211_FLAG_NEED_RTNL,
12122 },
12123 {
12124 .cmd = NL80211_CMD_GET_KEY,
12125 .doit = nl80211_get_key,
12126 .policy = nl80211_policy,
12127 .flags = GENL_UNS_ADMIN_PERM,
12128 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12129 NL80211_FLAG_NEED_RTNL,
12130 },
12131 {
12132 .cmd = NL80211_CMD_SET_KEY,
12133 .doit = nl80211_set_key,
12134 .policy = nl80211_policy,
12135 .flags = GENL_UNS_ADMIN_PERM,
12136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12137 NL80211_FLAG_NEED_RTNL |
12138 NL80211_FLAG_CLEAR_SKB,
12139 },
12140 {
12141 .cmd = NL80211_CMD_NEW_KEY,
12142 .doit = nl80211_new_key,
12143 .policy = nl80211_policy,
12144 .flags = GENL_UNS_ADMIN_PERM,
12145 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12146 NL80211_FLAG_NEED_RTNL |
12147 NL80211_FLAG_CLEAR_SKB,
12148 },
12149 {
12150 .cmd = NL80211_CMD_DEL_KEY,
12151 .doit = nl80211_del_key,
12152 .policy = nl80211_policy,
12153 .flags = GENL_UNS_ADMIN_PERM,
12154 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12155 NL80211_FLAG_NEED_RTNL,
12156 },
12157 {
12158 .cmd = NL80211_CMD_SET_BEACON,
12159 .policy = nl80211_policy,
12160 .flags = GENL_UNS_ADMIN_PERM,
12161 .doit = nl80211_set_beacon,
12162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12163 NL80211_FLAG_NEED_RTNL,
12164 },
12165 {
12166 .cmd = NL80211_CMD_START_AP,
12167 .policy = nl80211_policy,
12168 .flags = GENL_UNS_ADMIN_PERM,
12169 .doit = nl80211_start_ap,
12170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12171 NL80211_FLAG_NEED_RTNL,
12172 },
12173 {
12174 .cmd = NL80211_CMD_STOP_AP,
12175 .policy = nl80211_policy,
12176 .flags = GENL_UNS_ADMIN_PERM,
12177 .doit = nl80211_stop_ap,
12178 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12179 NL80211_FLAG_NEED_RTNL,
12180 },
12181 {
12182 .cmd = NL80211_CMD_GET_STATION,
12183 .doit = nl80211_get_station,
12184 .dumpit = nl80211_dump_station,
12185 .policy = nl80211_policy,
12186 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12187 NL80211_FLAG_NEED_RTNL,
12188 },
12189 {
12190 .cmd = NL80211_CMD_SET_STATION,
12191 .doit = nl80211_set_station,
12192 .policy = nl80211_policy,
12193 .flags = GENL_UNS_ADMIN_PERM,
12194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12195 NL80211_FLAG_NEED_RTNL,
12196 },
12197 {
12198 .cmd = NL80211_CMD_NEW_STATION,
12199 .doit = nl80211_new_station,
12200 .policy = nl80211_policy,
12201 .flags = GENL_UNS_ADMIN_PERM,
12202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12203 NL80211_FLAG_NEED_RTNL,
12204 },
12205 {
12206 .cmd = NL80211_CMD_DEL_STATION,
12207 .doit = nl80211_del_station,
12208 .policy = nl80211_policy,
12209 .flags = GENL_UNS_ADMIN_PERM,
12210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12211 NL80211_FLAG_NEED_RTNL,
12212 },
12213 {
12214 .cmd = NL80211_CMD_GET_MPATH,
12215 .doit = nl80211_get_mpath,
12216 .dumpit = nl80211_dump_mpath,
12217 .policy = nl80211_policy,
12218 .flags = GENL_UNS_ADMIN_PERM,
12219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12220 NL80211_FLAG_NEED_RTNL,
12221 },
12222 {
12223 .cmd = NL80211_CMD_GET_MPP,
12224 .doit = nl80211_get_mpp,
12225 .dumpit = nl80211_dump_mpp,
12226 .policy = nl80211_policy,
12227 .flags = GENL_UNS_ADMIN_PERM,
12228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12229 NL80211_FLAG_NEED_RTNL,
12230 },
12231 {
12232 .cmd = NL80211_CMD_SET_MPATH,
12233 .doit = nl80211_set_mpath,
12234 .policy = nl80211_policy,
12235 .flags = GENL_UNS_ADMIN_PERM,
12236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12237 NL80211_FLAG_NEED_RTNL,
12238 },
12239 {
12240 .cmd = NL80211_CMD_NEW_MPATH,
12241 .doit = nl80211_new_mpath,
12242 .policy = nl80211_policy,
12243 .flags = GENL_UNS_ADMIN_PERM,
12244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12245 NL80211_FLAG_NEED_RTNL,
12246 },
12247 {
12248 .cmd = NL80211_CMD_DEL_MPATH,
12249 .doit = nl80211_del_mpath,
12250 .policy = nl80211_policy,
12251 .flags = GENL_UNS_ADMIN_PERM,
12252 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12253 NL80211_FLAG_NEED_RTNL,
12254 },
12255 {
12256 .cmd = NL80211_CMD_SET_BSS,
12257 .doit = nl80211_set_bss,
12258 .policy = nl80211_policy,
12259 .flags = GENL_UNS_ADMIN_PERM,
12260 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12261 NL80211_FLAG_NEED_RTNL,
12262 },
12263 {
12264 .cmd = NL80211_CMD_GET_REG,
12265 .doit = nl80211_get_reg_do,
12266 .dumpit = nl80211_get_reg_dump,
12267 .policy = nl80211_policy,
12268 .internal_flags = NL80211_FLAG_NEED_RTNL,
12269 /* can be retrieved by unprivileged users */
12270 },
12271 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12272 {
12273 .cmd = NL80211_CMD_SET_REG,
12274 .doit = nl80211_set_reg,
12275 .policy = nl80211_policy,
12276 .flags = GENL_ADMIN_PERM,
12277 .internal_flags = NL80211_FLAG_NEED_RTNL,
12278 },
12279 #endif
12280 {
12281 .cmd = NL80211_CMD_REQ_SET_REG,
12282 .doit = nl80211_req_set_reg,
12283 .policy = nl80211_policy,
12284 .flags = GENL_ADMIN_PERM,
12285 },
12286 {
12287 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12288 .doit = nl80211_get_mesh_config,
12289 .policy = nl80211_policy,
12290 /* can be retrieved by unprivileged users */
12291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12292 NL80211_FLAG_NEED_RTNL,
12293 },
12294 {
12295 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12296 .doit = nl80211_update_mesh_config,
12297 .policy = nl80211_policy,
12298 .flags = GENL_UNS_ADMIN_PERM,
12299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12300 NL80211_FLAG_NEED_RTNL,
12301 },
12302 {
12303 .cmd = NL80211_CMD_TRIGGER_SCAN,
12304 .doit = nl80211_trigger_scan,
12305 .policy = nl80211_policy,
12306 .flags = GENL_UNS_ADMIN_PERM,
12307 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12308 NL80211_FLAG_NEED_RTNL,
12309 },
12310 {
12311 .cmd = NL80211_CMD_ABORT_SCAN,
12312 .doit = nl80211_abort_scan,
12313 .policy = nl80211_policy,
12314 .flags = GENL_UNS_ADMIN_PERM,
12315 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12316 NL80211_FLAG_NEED_RTNL,
12317 },
12318 {
12319 .cmd = NL80211_CMD_GET_SCAN,
12320 .policy = nl80211_policy,
12321 .dumpit = nl80211_dump_scan,
12322 },
12323 {
12324 .cmd = NL80211_CMD_START_SCHED_SCAN,
12325 .doit = nl80211_start_sched_scan,
12326 .policy = nl80211_policy,
12327 .flags = GENL_UNS_ADMIN_PERM,
12328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12329 NL80211_FLAG_NEED_RTNL,
12330 },
12331 {
12332 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12333 .doit = nl80211_stop_sched_scan,
12334 .policy = nl80211_policy,
12335 .flags = GENL_UNS_ADMIN_PERM,
12336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12337 NL80211_FLAG_NEED_RTNL,
12338 },
12339 {
12340 .cmd = NL80211_CMD_AUTHENTICATE,
12341 .doit = nl80211_authenticate,
12342 .policy = nl80211_policy,
12343 .flags = GENL_UNS_ADMIN_PERM,
12344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12345 NL80211_FLAG_NEED_RTNL |
12346 NL80211_FLAG_CLEAR_SKB,
12347 },
12348 {
12349 .cmd = NL80211_CMD_ASSOCIATE,
12350 .doit = nl80211_associate,
12351 .policy = nl80211_policy,
12352 .flags = GENL_UNS_ADMIN_PERM,
12353 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12354 NL80211_FLAG_NEED_RTNL,
12355 },
12356 {
12357 .cmd = NL80211_CMD_DEAUTHENTICATE,
12358 .doit = nl80211_deauthenticate,
12359 .policy = nl80211_policy,
12360 .flags = GENL_UNS_ADMIN_PERM,
12361 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12362 NL80211_FLAG_NEED_RTNL,
12363 },
12364 {
12365 .cmd = NL80211_CMD_DISASSOCIATE,
12366 .doit = nl80211_disassociate,
12367 .policy = nl80211_policy,
12368 .flags = GENL_UNS_ADMIN_PERM,
12369 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12370 NL80211_FLAG_NEED_RTNL,
12371 },
12372 {
12373 .cmd = NL80211_CMD_JOIN_IBSS,
12374 .doit = nl80211_join_ibss,
12375 .policy = nl80211_policy,
12376 .flags = GENL_UNS_ADMIN_PERM,
12377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12378 NL80211_FLAG_NEED_RTNL,
12379 },
12380 {
12381 .cmd = NL80211_CMD_LEAVE_IBSS,
12382 .doit = nl80211_leave_ibss,
12383 .policy = nl80211_policy,
12384 .flags = GENL_UNS_ADMIN_PERM,
12385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12386 NL80211_FLAG_NEED_RTNL,
12387 },
12388 #ifdef CONFIG_NL80211_TESTMODE
12389 {
12390 .cmd = NL80211_CMD_TESTMODE,
12391 .doit = nl80211_testmode_do,
12392 .dumpit = nl80211_testmode_dump,
12393 .policy = nl80211_policy,
12394 .flags = GENL_UNS_ADMIN_PERM,
12395 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12396 NL80211_FLAG_NEED_RTNL,
12397 },
12398 #endif
12399 {
12400 .cmd = NL80211_CMD_CONNECT,
12401 .doit = nl80211_connect,
12402 .policy = nl80211_policy,
12403 .flags = GENL_UNS_ADMIN_PERM,
12404 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12405 NL80211_FLAG_NEED_RTNL,
12406 },
12407 {
12408 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12409 .doit = nl80211_update_connect_params,
12410 .policy = nl80211_policy,
12411 .flags = GENL_ADMIN_PERM,
12412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12413 NL80211_FLAG_NEED_RTNL,
12414 },
12415 {
12416 .cmd = NL80211_CMD_DISCONNECT,
12417 .doit = nl80211_disconnect,
12418 .policy = nl80211_policy,
12419 .flags = GENL_UNS_ADMIN_PERM,
12420 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12421 NL80211_FLAG_NEED_RTNL,
12422 },
12423 {
12424 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12425 .doit = nl80211_wiphy_netns,
12426 .policy = nl80211_policy,
12427 .flags = GENL_UNS_ADMIN_PERM,
12428 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12429 NL80211_FLAG_NEED_RTNL,
12430 },
12431 {
12432 .cmd = NL80211_CMD_GET_SURVEY,
12433 .policy = nl80211_policy,
12434 .dumpit = nl80211_dump_survey,
12435 },
12436 {
12437 .cmd = NL80211_CMD_SET_PMKSA,
12438 .doit = nl80211_setdel_pmksa,
12439 .policy = nl80211_policy,
12440 .flags = GENL_UNS_ADMIN_PERM,
12441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12442 NL80211_FLAG_NEED_RTNL,
12443 },
12444 {
12445 .cmd = NL80211_CMD_DEL_PMKSA,
12446 .doit = nl80211_setdel_pmksa,
12447 .policy = nl80211_policy,
12448 .flags = GENL_UNS_ADMIN_PERM,
12449 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12450 NL80211_FLAG_NEED_RTNL,
12451 },
12452 {
12453 .cmd = NL80211_CMD_FLUSH_PMKSA,
12454 .doit = nl80211_flush_pmksa,
12455 .policy = nl80211_policy,
12456 .flags = GENL_UNS_ADMIN_PERM,
12457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12458 NL80211_FLAG_NEED_RTNL,
12459 },
12460 {
12461 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12462 .doit = nl80211_remain_on_channel,
12463 .policy = nl80211_policy,
12464 .flags = GENL_UNS_ADMIN_PERM,
12465 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12466 NL80211_FLAG_NEED_RTNL,
12467 },
12468 {
12469 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12470 .doit = nl80211_cancel_remain_on_channel,
12471 .policy = nl80211_policy,
12472 .flags = GENL_UNS_ADMIN_PERM,
12473 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12474 NL80211_FLAG_NEED_RTNL,
12475 },
12476 {
12477 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12478 .doit = nl80211_set_tx_bitrate_mask,
12479 .policy = nl80211_policy,
12480 .flags = GENL_UNS_ADMIN_PERM,
12481 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12482 NL80211_FLAG_NEED_RTNL,
12483 },
12484 {
12485 .cmd = NL80211_CMD_REGISTER_FRAME,
12486 .doit = nl80211_register_mgmt,
12487 .policy = nl80211_policy,
12488 .flags = GENL_UNS_ADMIN_PERM,
12489 .internal_flags = NL80211_FLAG_NEED_WDEV |
12490 NL80211_FLAG_NEED_RTNL,
12491 },
12492 {
12493 .cmd = NL80211_CMD_FRAME,
12494 .doit = nl80211_tx_mgmt,
12495 .policy = nl80211_policy,
12496 .flags = GENL_UNS_ADMIN_PERM,
12497 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12498 NL80211_FLAG_NEED_RTNL,
12499 },
12500 {
12501 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12502 .doit = nl80211_tx_mgmt_cancel_wait,
12503 .policy = nl80211_policy,
12504 .flags = GENL_UNS_ADMIN_PERM,
12505 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12506 NL80211_FLAG_NEED_RTNL,
12507 },
12508 {
12509 .cmd = NL80211_CMD_SET_POWER_SAVE,
12510 .doit = nl80211_set_power_save,
12511 .policy = nl80211_policy,
12512 .flags = GENL_UNS_ADMIN_PERM,
12513 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12514 NL80211_FLAG_NEED_RTNL,
12515 },
12516 {
12517 .cmd = NL80211_CMD_GET_POWER_SAVE,
12518 .doit = nl80211_get_power_save,
12519 .policy = nl80211_policy,
12520 /* can be retrieved by unprivileged users */
12521 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12522 NL80211_FLAG_NEED_RTNL,
12523 },
12524 {
12525 .cmd = NL80211_CMD_SET_CQM,
12526 .doit = nl80211_set_cqm,
12527 .policy = nl80211_policy,
12528 .flags = GENL_UNS_ADMIN_PERM,
12529 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12530 NL80211_FLAG_NEED_RTNL,
12531 },
12532 {
12533 .cmd = NL80211_CMD_SET_CHANNEL,
12534 .doit = nl80211_set_channel,
12535 .policy = nl80211_policy,
12536 .flags = GENL_UNS_ADMIN_PERM,
12537 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12538 NL80211_FLAG_NEED_RTNL,
12539 },
12540 {
12541 .cmd = NL80211_CMD_SET_WDS_PEER,
12542 .doit = nl80211_set_wds_peer,
12543 .policy = nl80211_policy,
12544 .flags = GENL_UNS_ADMIN_PERM,
12545 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12546 NL80211_FLAG_NEED_RTNL,
12547 },
12548 {
12549 .cmd = NL80211_CMD_JOIN_MESH,
12550 .doit = nl80211_join_mesh,
12551 .policy = nl80211_policy,
12552 .flags = GENL_UNS_ADMIN_PERM,
12553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12554 NL80211_FLAG_NEED_RTNL,
12555 },
12556 {
12557 .cmd = NL80211_CMD_LEAVE_MESH,
12558 .doit = nl80211_leave_mesh,
12559 .policy = nl80211_policy,
12560 .flags = GENL_UNS_ADMIN_PERM,
12561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12562 NL80211_FLAG_NEED_RTNL,
12563 },
12564 {
12565 .cmd = NL80211_CMD_JOIN_OCB,
12566 .doit = nl80211_join_ocb,
12567 .policy = nl80211_policy,
12568 .flags = GENL_UNS_ADMIN_PERM,
12569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12570 NL80211_FLAG_NEED_RTNL,
12571 },
12572 {
12573 .cmd = NL80211_CMD_LEAVE_OCB,
12574 .doit = nl80211_leave_ocb,
12575 .policy = nl80211_policy,
12576 .flags = GENL_UNS_ADMIN_PERM,
12577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12578 NL80211_FLAG_NEED_RTNL,
12579 },
12580 #ifdef CONFIG_PM
12581 {
12582 .cmd = NL80211_CMD_GET_WOWLAN,
12583 .doit = nl80211_get_wowlan,
12584 .policy = nl80211_policy,
12585 /* can be retrieved by unprivileged users */
12586 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12587 NL80211_FLAG_NEED_RTNL,
12588 },
12589 {
12590 .cmd = NL80211_CMD_SET_WOWLAN,
12591 .doit = nl80211_set_wowlan,
12592 .policy = nl80211_policy,
12593 .flags = GENL_UNS_ADMIN_PERM,
12594 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12595 NL80211_FLAG_NEED_RTNL,
12596 },
12597 #endif
12598 {
12599 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12600 .doit = nl80211_set_rekey_data,
12601 .policy = nl80211_policy,
12602 .flags = GENL_UNS_ADMIN_PERM,
12603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12604 NL80211_FLAG_NEED_RTNL |
12605 NL80211_FLAG_CLEAR_SKB,
12606 },
12607 {
12608 .cmd = NL80211_CMD_TDLS_MGMT,
12609 .doit = nl80211_tdls_mgmt,
12610 .policy = nl80211_policy,
12611 .flags = GENL_UNS_ADMIN_PERM,
12612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12613 NL80211_FLAG_NEED_RTNL,
12614 },
12615 {
12616 .cmd = NL80211_CMD_TDLS_OPER,
12617 .doit = nl80211_tdls_oper,
12618 .policy = nl80211_policy,
12619 .flags = GENL_UNS_ADMIN_PERM,
12620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12621 NL80211_FLAG_NEED_RTNL,
12622 },
12623 {
12624 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12625 .doit = nl80211_register_unexpected_frame,
12626 .policy = nl80211_policy,
12627 .flags = GENL_UNS_ADMIN_PERM,
12628 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12629 NL80211_FLAG_NEED_RTNL,
12630 },
12631 {
12632 .cmd = NL80211_CMD_PROBE_CLIENT,
12633 .doit = nl80211_probe_client,
12634 .policy = nl80211_policy,
12635 .flags = GENL_UNS_ADMIN_PERM,
12636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12637 NL80211_FLAG_NEED_RTNL,
12638 },
12639 {
12640 .cmd = NL80211_CMD_REGISTER_BEACONS,
12641 .doit = nl80211_register_beacons,
12642 .policy = nl80211_policy,
12643 .flags = GENL_UNS_ADMIN_PERM,
12644 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12645 NL80211_FLAG_NEED_RTNL,
12646 },
12647 {
12648 .cmd = NL80211_CMD_SET_NOACK_MAP,
12649 .doit = nl80211_set_noack_map,
12650 .policy = nl80211_policy,
12651 .flags = GENL_UNS_ADMIN_PERM,
12652 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12653 NL80211_FLAG_NEED_RTNL,
12654 },
12655 {
12656 .cmd = NL80211_CMD_START_P2P_DEVICE,
12657 .doit = nl80211_start_p2p_device,
12658 .policy = nl80211_policy,
12659 .flags = GENL_UNS_ADMIN_PERM,
12660 .internal_flags = NL80211_FLAG_NEED_WDEV |
12661 NL80211_FLAG_NEED_RTNL,
12662 },
12663 {
12664 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12665 .doit = nl80211_stop_p2p_device,
12666 .policy = nl80211_policy,
12667 .flags = GENL_UNS_ADMIN_PERM,
12668 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12669 NL80211_FLAG_NEED_RTNL,
12670 },
12671 {
12672 .cmd = NL80211_CMD_START_NAN,
12673 .doit = nl80211_start_nan,
12674 .policy = nl80211_policy,
12675 .flags = GENL_ADMIN_PERM,
12676 .internal_flags = NL80211_FLAG_NEED_WDEV |
12677 NL80211_FLAG_NEED_RTNL,
12678 },
12679 {
12680 .cmd = NL80211_CMD_STOP_NAN,
12681 .doit = nl80211_stop_nan,
12682 .policy = nl80211_policy,
12683 .flags = GENL_ADMIN_PERM,
12684 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12685 NL80211_FLAG_NEED_RTNL,
12686 },
12687 {
12688 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12689 .doit = nl80211_nan_add_func,
12690 .policy = nl80211_policy,
12691 .flags = GENL_ADMIN_PERM,
12692 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12693 NL80211_FLAG_NEED_RTNL,
12694 },
12695 {
12696 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12697 .doit = nl80211_nan_del_func,
12698 .policy = nl80211_policy,
12699 .flags = GENL_ADMIN_PERM,
12700 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12701 NL80211_FLAG_NEED_RTNL,
12702 },
12703 {
12704 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12705 .doit = nl80211_nan_change_config,
12706 .policy = nl80211_policy,
12707 .flags = GENL_ADMIN_PERM,
12708 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12709 NL80211_FLAG_NEED_RTNL,
12710 },
12711 {
12712 .cmd = NL80211_CMD_SET_MCAST_RATE,
12713 .doit = nl80211_set_mcast_rate,
12714 .policy = nl80211_policy,
12715 .flags = GENL_UNS_ADMIN_PERM,
12716 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12717 NL80211_FLAG_NEED_RTNL,
12718 },
12719 {
12720 .cmd = NL80211_CMD_SET_MAC_ACL,
12721 .doit = nl80211_set_mac_acl,
12722 .policy = nl80211_policy,
12723 .flags = GENL_UNS_ADMIN_PERM,
12724 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12725 NL80211_FLAG_NEED_RTNL,
12726 },
12727 {
12728 .cmd = NL80211_CMD_RADAR_DETECT,
12729 .doit = nl80211_start_radar_detection,
12730 .policy = nl80211_policy,
12731 .flags = GENL_UNS_ADMIN_PERM,
12732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12733 NL80211_FLAG_NEED_RTNL,
12734 },
12735 {
12736 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12737 .doit = nl80211_get_protocol_features,
12738 .policy = nl80211_policy,
12739 },
12740 {
12741 .cmd = NL80211_CMD_UPDATE_FT_IES,
12742 .doit = nl80211_update_ft_ies,
12743 .policy = nl80211_policy,
12744 .flags = GENL_UNS_ADMIN_PERM,
12745 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12746 NL80211_FLAG_NEED_RTNL,
12747 },
12748 {
12749 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12750 .doit = nl80211_crit_protocol_start,
12751 .policy = nl80211_policy,
12752 .flags = GENL_UNS_ADMIN_PERM,
12753 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12754 NL80211_FLAG_NEED_RTNL,
12755 },
12756 {
12757 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12758 .doit = nl80211_crit_protocol_stop,
12759 .policy = nl80211_policy,
12760 .flags = GENL_UNS_ADMIN_PERM,
12761 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12762 NL80211_FLAG_NEED_RTNL,
12763 },
12764 {
12765 .cmd = NL80211_CMD_GET_COALESCE,
12766 .doit = nl80211_get_coalesce,
12767 .policy = nl80211_policy,
12768 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12769 NL80211_FLAG_NEED_RTNL,
12770 },
12771 {
12772 .cmd = NL80211_CMD_SET_COALESCE,
12773 .doit = nl80211_set_coalesce,
12774 .policy = nl80211_policy,
12775 .flags = GENL_UNS_ADMIN_PERM,
12776 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12777 NL80211_FLAG_NEED_RTNL,
12778 },
12779 {
12780 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12781 .doit = nl80211_channel_switch,
12782 .policy = nl80211_policy,
12783 .flags = GENL_UNS_ADMIN_PERM,
12784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12785 NL80211_FLAG_NEED_RTNL,
12786 },
12787 {
12788 .cmd = NL80211_CMD_VENDOR,
12789 .doit = nl80211_vendor_cmd,
12790 .dumpit = nl80211_vendor_cmd_dump,
12791 .policy = nl80211_policy,
12792 .flags = GENL_UNS_ADMIN_PERM,
12793 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12794 NL80211_FLAG_NEED_RTNL,
12795 },
12796 {
12797 .cmd = NL80211_CMD_SET_QOS_MAP,
12798 .doit = nl80211_set_qos_map,
12799 .policy = nl80211_policy,
12800 .flags = GENL_UNS_ADMIN_PERM,
12801 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12802 NL80211_FLAG_NEED_RTNL,
12803 },
12804 {
12805 .cmd = NL80211_CMD_ADD_TX_TS,
12806 .doit = nl80211_add_tx_ts,
12807 .policy = nl80211_policy,
12808 .flags = GENL_UNS_ADMIN_PERM,
12809 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12810 NL80211_FLAG_NEED_RTNL,
12811 },
12812 {
12813 .cmd = NL80211_CMD_DEL_TX_TS,
12814 .doit = nl80211_del_tx_ts,
12815 .policy = nl80211_policy,
12816 .flags = GENL_UNS_ADMIN_PERM,
12817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12818 NL80211_FLAG_NEED_RTNL,
12819 },
12820 {
12821 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12822 .doit = nl80211_tdls_channel_switch,
12823 .policy = nl80211_policy,
12824 .flags = GENL_UNS_ADMIN_PERM,
12825 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12826 NL80211_FLAG_NEED_RTNL,
12827 },
12828 {
12829 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12830 .doit = nl80211_tdls_cancel_channel_switch,
12831 .policy = nl80211_policy,
12832 .flags = GENL_UNS_ADMIN_PERM,
12833 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12834 NL80211_FLAG_NEED_RTNL,
12835 },
12836 {
12837 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12838 .doit = nl80211_set_multicast_to_unicast,
12839 .policy = nl80211_policy,
12840 .flags = GENL_UNS_ADMIN_PERM,
12841 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12842 NL80211_FLAG_NEED_RTNL,
12843 },
12844 };
12845
12846 static struct genl_family nl80211_fam __ro_after_init = {
12847 .name = NL80211_GENL_NAME, /* have users key off the name instead */
12848 .hdrsize = 0, /* no private header */
12849 .version = 1, /* no particular meaning now */
12850 .maxattr = NL80211_ATTR_MAX,
12851 .netnsok = true,
12852 .pre_doit = nl80211_pre_doit,
12853 .post_doit = nl80211_post_doit,
12854 .module = THIS_MODULE,
12855 .ops = nl80211_ops,
12856 .n_ops = ARRAY_SIZE(nl80211_ops),
12857 .mcgrps = nl80211_mcgrps,
12858 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12859 };
12860
12861 /* notification functions */
12862
12863 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12864 enum nl80211_commands cmd)
12865 {
12866 struct sk_buff *msg;
12867 struct nl80211_dump_wiphy_state state = {};
12868
12869 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12870 cmd != NL80211_CMD_DEL_WIPHY);
12871
12872 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12873 if (!msg)
12874 return;
12875
12876 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12877 nlmsg_free(msg);
12878 return;
12879 }
12880
12881 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12882 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12883 }
12884
12885 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12886 struct wireless_dev *wdev,
12887 enum nl80211_commands cmd)
12888 {
12889 struct sk_buff *msg;
12890
12891 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12892 cmd != NL80211_CMD_DEL_INTERFACE);
12893
12894 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12895 if (!msg)
12896 return;
12897
12898 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12899 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12900 nlmsg_free(msg);
12901 return;
12902 }
12903
12904 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12905 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12906 }
12907
12908 static int nl80211_add_scan_req(struct sk_buff *msg,
12909 struct cfg80211_registered_device *rdev)
12910 {
12911 struct cfg80211_scan_request *req = rdev->scan_req;
12912 struct nlattr *nest;
12913 int i;
12914
12915 if (WARN_ON(!req))
12916 return 0;
12917
12918 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12919 if (!nest)
12920 goto nla_put_failure;
12921 for (i = 0; i < req->n_ssids; i++) {
12922 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12923 goto nla_put_failure;
12924 }
12925 nla_nest_end(msg, nest);
12926
12927 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12928 if (!nest)
12929 goto nla_put_failure;
12930 for (i = 0; i < req->n_channels; i++) {
12931 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12932 goto nla_put_failure;
12933 }
12934 nla_nest_end(msg, nest);
12935
12936 if (req->ie &&
12937 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12938 goto nla_put_failure;
12939
12940 if (req->flags &&
12941 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12942 goto nla_put_failure;
12943
12944 if (req->info.scan_start_tsf &&
12945 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12946 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12947 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12948 req->info.tsf_bssid)))
12949 goto nla_put_failure;
12950
12951 return 0;
12952 nla_put_failure:
12953 return -ENOBUFS;
12954 }
12955
12956 static int nl80211_prep_scan_msg(struct sk_buff *msg,
12957 struct cfg80211_registered_device *rdev,
12958 struct wireless_dev *wdev,
12959 u32 portid, u32 seq, int flags,
12960 u32 cmd)
12961 {
12962 void *hdr;
12963
12964 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12965 if (!hdr)
12966 return -1;
12967
12968 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12969 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12970 wdev->netdev->ifindex)) ||
12971 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12972 NL80211_ATTR_PAD))
12973 goto nla_put_failure;
12974
12975 /* ignore errors and send incomplete event anyway */
12976 nl80211_add_scan_req(msg, rdev);
12977
12978 genlmsg_end(msg, hdr);
12979 return 0;
12980
12981 nla_put_failure:
12982 genlmsg_cancel(msg, hdr);
12983 return -EMSGSIZE;
12984 }
12985
12986 static int
12987 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
12988 struct cfg80211_registered_device *rdev,
12989 struct net_device *netdev,
12990 u32 portid, u32 seq, int flags, u32 cmd)
12991 {
12992 void *hdr;
12993
12994 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12995 if (!hdr)
12996 return -1;
12997
12998 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12999 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13000 goto nla_put_failure;
13001
13002 genlmsg_end(msg, hdr);
13003 return 0;
13004
13005 nla_put_failure:
13006 genlmsg_cancel(msg, hdr);
13007 return -EMSGSIZE;
13008 }
13009
13010 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13011 struct wireless_dev *wdev)
13012 {
13013 struct sk_buff *msg;
13014
13015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13016 if (!msg)
13017 return;
13018
13019 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13020 NL80211_CMD_TRIGGER_SCAN) < 0) {
13021 nlmsg_free(msg);
13022 return;
13023 }
13024
13025 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13026 NL80211_MCGRP_SCAN, GFP_KERNEL);
13027 }
13028
13029 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13030 struct wireless_dev *wdev, bool aborted)
13031 {
13032 struct sk_buff *msg;
13033
13034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13035 if (!msg)
13036 return NULL;
13037
13038 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13039 aborted ? NL80211_CMD_SCAN_ABORTED :
13040 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13041 nlmsg_free(msg);
13042 return NULL;
13043 }
13044
13045 return msg;
13046 }
13047
13048 /* send message created by nl80211_build_scan_msg() */
13049 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13050 struct sk_buff *msg)
13051 {
13052 if (!msg)
13053 return;
13054
13055 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13056 NL80211_MCGRP_SCAN, GFP_KERNEL);
13057 }
13058
13059 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
13060 struct net_device *netdev, u32 cmd)
13061 {
13062 struct sk_buff *msg;
13063
13064 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13065 if (!msg)
13066 return;
13067
13068 if (nl80211_prep_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
13069 nlmsg_free(msg);
13070 return;
13071 }
13072
13073 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13074 NL80211_MCGRP_SCAN, GFP_KERNEL);
13075 }
13076
13077 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13078 struct regulatory_request *request)
13079 {
13080 /* Userspace can always count this one always being set */
13081 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13082 goto nla_put_failure;
13083
13084 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13085 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13086 NL80211_REGDOM_TYPE_WORLD))
13087 goto nla_put_failure;
13088 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13089 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13090 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13091 goto nla_put_failure;
13092 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13093 request->intersect) {
13094 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13095 NL80211_REGDOM_TYPE_INTERSECTION))
13096 goto nla_put_failure;
13097 } else {
13098 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13099 NL80211_REGDOM_TYPE_COUNTRY) ||
13100 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13101 request->alpha2))
13102 goto nla_put_failure;
13103 }
13104
13105 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13106 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13107
13108 if (wiphy &&
13109 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13110 goto nla_put_failure;
13111
13112 if (wiphy &&
13113 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13114 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13115 goto nla_put_failure;
13116 }
13117
13118 return true;
13119
13120 nla_put_failure:
13121 return false;
13122 }
13123
13124 /*
13125 * This can happen on global regulatory changes or device specific settings
13126 * based on custom regulatory domains.
13127 */
13128 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13129 struct regulatory_request *request)
13130 {
13131 struct sk_buff *msg;
13132 void *hdr;
13133
13134 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13135 if (!msg)
13136 return;
13137
13138 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13139 if (!hdr) {
13140 nlmsg_free(msg);
13141 return;
13142 }
13143
13144 if (nl80211_reg_change_event_fill(msg, request) == false)
13145 goto nla_put_failure;
13146
13147 genlmsg_end(msg, hdr);
13148
13149 rcu_read_lock();
13150 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13151 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13152 rcu_read_unlock();
13153
13154 return;
13155
13156 nla_put_failure:
13157 genlmsg_cancel(msg, hdr);
13158 nlmsg_free(msg);
13159 }
13160
13161 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13162 struct net_device *netdev,
13163 const u8 *buf, size_t len,
13164 enum nl80211_commands cmd, gfp_t gfp,
13165 int uapsd_queues)
13166 {
13167 struct sk_buff *msg;
13168 void *hdr;
13169
13170 msg = nlmsg_new(100 + len, gfp);
13171 if (!msg)
13172 return;
13173
13174 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13175 if (!hdr) {
13176 nlmsg_free(msg);
13177 return;
13178 }
13179
13180 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13181 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13182 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13183 goto nla_put_failure;
13184
13185 if (uapsd_queues >= 0) {
13186 struct nlattr *nla_wmm =
13187 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13188 if (!nla_wmm)
13189 goto nla_put_failure;
13190
13191 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13192 uapsd_queues))
13193 goto nla_put_failure;
13194
13195 nla_nest_end(msg, nla_wmm);
13196 }
13197
13198 genlmsg_end(msg, hdr);
13199
13200 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13201 NL80211_MCGRP_MLME, gfp);
13202 return;
13203
13204 nla_put_failure:
13205 genlmsg_cancel(msg, hdr);
13206 nlmsg_free(msg);
13207 }
13208
13209 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13210 struct net_device *netdev, const u8 *buf,
13211 size_t len, gfp_t gfp)
13212 {
13213 nl80211_send_mlme_event(rdev, netdev, buf, len,
13214 NL80211_CMD_AUTHENTICATE, gfp, -1);
13215 }
13216
13217 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13218 struct net_device *netdev, const u8 *buf,
13219 size_t len, gfp_t gfp, int uapsd_queues)
13220 {
13221 nl80211_send_mlme_event(rdev, netdev, buf, len,
13222 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13223 }
13224
13225 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13226 struct net_device *netdev, const u8 *buf,
13227 size_t len, gfp_t gfp)
13228 {
13229 nl80211_send_mlme_event(rdev, netdev, buf, len,
13230 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13231 }
13232
13233 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13234 struct net_device *netdev, const u8 *buf,
13235 size_t len, gfp_t gfp)
13236 {
13237 nl80211_send_mlme_event(rdev, netdev, buf, len,
13238 NL80211_CMD_DISASSOCIATE, gfp, -1);
13239 }
13240
13241 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13242 size_t len)
13243 {
13244 struct wireless_dev *wdev = dev->ieee80211_ptr;
13245 struct wiphy *wiphy = wdev->wiphy;
13246 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13247 const struct ieee80211_mgmt *mgmt = (void *)buf;
13248 u32 cmd;
13249
13250 if (WARN_ON(len < 2))
13251 return;
13252
13253 if (ieee80211_is_deauth(mgmt->frame_control))
13254 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13255 else
13256 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13257
13258 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13259 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13260 }
13261 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13262
13263 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13264 struct net_device *netdev, int cmd,
13265 const u8 *addr, gfp_t gfp)
13266 {
13267 struct sk_buff *msg;
13268 void *hdr;
13269
13270 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13271 if (!msg)
13272 return;
13273
13274 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13275 if (!hdr) {
13276 nlmsg_free(msg);
13277 return;
13278 }
13279
13280 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13281 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13282 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13283 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13284 goto nla_put_failure;
13285
13286 genlmsg_end(msg, hdr);
13287
13288 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13289 NL80211_MCGRP_MLME, gfp);
13290 return;
13291
13292 nla_put_failure:
13293 genlmsg_cancel(msg, hdr);
13294 nlmsg_free(msg);
13295 }
13296
13297 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13298 struct net_device *netdev, const u8 *addr,
13299 gfp_t gfp)
13300 {
13301 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13302 addr, gfp);
13303 }
13304
13305 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13306 struct net_device *netdev, const u8 *addr,
13307 gfp_t gfp)
13308 {
13309 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13310 addr, gfp);
13311 }
13312
13313 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13314 struct net_device *netdev, const u8 *bssid,
13315 const u8 *req_ie, size_t req_ie_len,
13316 const u8 *resp_ie, size_t resp_ie_len,
13317 int status,
13318 enum nl80211_timeout_reason timeout_reason,
13319 gfp_t gfp)
13320 {
13321 struct sk_buff *msg;
13322 void *hdr;
13323
13324 msg = nlmsg_new(100 + req_ie_len + resp_ie_len, gfp);
13325 if (!msg)
13326 return;
13327
13328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13329 if (!hdr) {
13330 nlmsg_free(msg);
13331 return;
13332 }
13333
13334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13336 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13337 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13338 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13339 status) ||
13340 (status < 0 &&
13341 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13342 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, timeout_reason))) ||
13343 (req_ie &&
13344 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13345 (resp_ie &&
13346 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13347 goto nla_put_failure;
13348
13349 genlmsg_end(msg, hdr);
13350
13351 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13352 NL80211_MCGRP_MLME, gfp);
13353 return;
13354
13355 nla_put_failure:
13356 genlmsg_cancel(msg, hdr);
13357 nlmsg_free(msg);
13358 }
13359
13360 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13361 struct net_device *netdev, const u8 *bssid,
13362 const u8 *req_ie, size_t req_ie_len,
13363 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13364 {
13365 struct sk_buff *msg;
13366 void *hdr;
13367
13368 msg = nlmsg_new(100 + req_ie_len + resp_ie_len, gfp);
13369 if (!msg)
13370 return;
13371
13372 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13373 if (!hdr) {
13374 nlmsg_free(msg);
13375 return;
13376 }
13377
13378 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13379 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13380 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13381 (req_ie &&
13382 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13383 (resp_ie &&
13384 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13385 goto nla_put_failure;
13386
13387 genlmsg_end(msg, hdr);
13388
13389 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13390 NL80211_MCGRP_MLME, gfp);
13391 return;
13392
13393 nla_put_failure:
13394 genlmsg_cancel(msg, hdr);
13395 nlmsg_free(msg);
13396 }
13397
13398 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13399 struct net_device *netdev, u16 reason,
13400 const u8 *ie, size_t ie_len, bool from_ap)
13401 {
13402 struct sk_buff *msg;
13403 void *hdr;
13404
13405 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13406 if (!msg)
13407 return;
13408
13409 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13410 if (!hdr) {
13411 nlmsg_free(msg);
13412 return;
13413 }
13414
13415 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13416 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13417 (from_ap && reason &&
13418 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13419 (from_ap &&
13420 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13421 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13422 goto nla_put_failure;
13423
13424 genlmsg_end(msg, hdr);
13425
13426 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13427 NL80211_MCGRP_MLME, GFP_KERNEL);
13428 return;
13429
13430 nla_put_failure:
13431 genlmsg_cancel(msg, hdr);
13432 nlmsg_free(msg);
13433 }
13434
13435 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13436 struct net_device *netdev, const u8 *bssid,
13437 gfp_t gfp)
13438 {
13439 struct sk_buff *msg;
13440 void *hdr;
13441
13442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13443 if (!msg)
13444 return;
13445
13446 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13447 if (!hdr) {
13448 nlmsg_free(msg);
13449 return;
13450 }
13451
13452 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13453 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13454 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13455 goto nla_put_failure;
13456
13457 genlmsg_end(msg, hdr);
13458
13459 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13460 NL80211_MCGRP_MLME, gfp);
13461 return;
13462
13463 nla_put_failure:
13464 genlmsg_cancel(msg, hdr);
13465 nlmsg_free(msg);
13466 }
13467
13468 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13469 const u8* ie, u8 ie_len, gfp_t gfp)
13470 {
13471 struct wireless_dev *wdev = dev->ieee80211_ptr;
13472 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13473 struct sk_buff *msg;
13474 void *hdr;
13475
13476 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13477 return;
13478
13479 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13480
13481 msg = nlmsg_new(100 + ie_len, gfp);
13482 if (!msg)
13483 return;
13484
13485 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13486 if (!hdr) {
13487 nlmsg_free(msg);
13488 return;
13489 }
13490
13491 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13492 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13493 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13494 (ie_len && ie &&
13495 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13496 goto nla_put_failure;
13497
13498 genlmsg_end(msg, hdr);
13499
13500 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13501 NL80211_MCGRP_MLME, gfp);
13502 return;
13503
13504 nla_put_failure:
13505 genlmsg_cancel(msg, hdr);
13506 nlmsg_free(msg);
13507 }
13508 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13509
13510 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13511 struct net_device *netdev, const u8 *addr,
13512 enum nl80211_key_type key_type, int key_id,
13513 const u8 *tsc, gfp_t gfp)
13514 {
13515 struct sk_buff *msg;
13516 void *hdr;
13517
13518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13519 if (!msg)
13520 return;
13521
13522 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13523 if (!hdr) {
13524 nlmsg_free(msg);
13525 return;
13526 }
13527
13528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13530 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13531 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13532 (key_id != -1 &&
13533 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13534 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13535 goto nla_put_failure;
13536
13537 genlmsg_end(msg, hdr);
13538
13539 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13540 NL80211_MCGRP_MLME, gfp);
13541 return;
13542
13543 nla_put_failure:
13544 genlmsg_cancel(msg, hdr);
13545 nlmsg_free(msg);
13546 }
13547
13548 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13549 struct ieee80211_channel *channel_before,
13550 struct ieee80211_channel *channel_after)
13551 {
13552 struct sk_buff *msg;
13553 void *hdr;
13554 struct nlattr *nl_freq;
13555
13556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13557 if (!msg)
13558 return;
13559
13560 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13561 if (!hdr) {
13562 nlmsg_free(msg);
13563 return;
13564 }
13565
13566 /*
13567 * Since we are applying the beacon hint to a wiphy we know its
13568 * wiphy_idx is valid
13569 */
13570 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13571 goto nla_put_failure;
13572
13573 /* Before */
13574 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13575 if (!nl_freq)
13576 goto nla_put_failure;
13577 if (nl80211_msg_put_channel(msg, channel_before, false))
13578 goto nla_put_failure;
13579 nla_nest_end(msg, nl_freq);
13580
13581 /* After */
13582 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13583 if (!nl_freq)
13584 goto nla_put_failure;
13585 if (nl80211_msg_put_channel(msg, channel_after, false))
13586 goto nla_put_failure;
13587 nla_nest_end(msg, nl_freq);
13588
13589 genlmsg_end(msg, hdr);
13590
13591 rcu_read_lock();
13592 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13593 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13594 rcu_read_unlock();
13595
13596 return;
13597
13598 nla_put_failure:
13599 genlmsg_cancel(msg, hdr);
13600 nlmsg_free(msg);
13601 }
13602
13603 static void nl80211_send_remain_on_chan_event(
13604 int cmd, struct cfg80211_registered_device *rdev,
13605 struct wireless_dev *wdev, u64 cookie,
13606 struct ieee80211_channel *chan,
13607 unsigned int duration, gfp_t gfp)
13608 {
13609 struct sk_buff *msg;
13610 void *hdr;
13611
13612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13613 if (!msg)
13614 return;
13615
13616 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13617 if (!hdr) {
13618 nlmsg_free(msg);
13619 return;
13620 }
13621
13622 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13623 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13624 wdev->netdev->ifindex)) ||
13625 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13626 NL80211_ATTR_PAD) ||
13627 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13628 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13629 NL80211_CHAN_NO_HT) ||
13630 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13631 NL80211_ATTR_PAD))
13632 goto nla_put_failure;
13633
13634 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13635 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13636 goto nla_put_failure;
13637
13638 genlmsg_end(msg, hdr);
13639
13640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13641 NL80211_MCGRP_MLME, gfp);
13642 return;
13643
13644 nla_put_failure:
13645 genlmsg_cancel(msg, hdr);
13646 nlmsg_free(msg);
13647 }
13648
13649 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13650 struct ieee80211_channel *chan,
13651 unsigned int duration, gfp_t gfp)
13652 {
13653 struct wiphy *wiphy = wdev->wiphy;
13654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13655
13656 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13657 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13658 rdev, wdev, cookie, chan,
13659 duration, gfp);
13660 }
13661 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13662
13663 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13664 struct ieee80211_channel *chan,
13665 gfp_t gfp)
13666 {
13667 struct wiphy *wiphy = wdev->wiphy;
13668 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13669
13670 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13671 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13672 rdev, wdev, cookie, chan, 0, gfp);
13673 }
13674 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13675
13676 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13677 struct station_info *sinfo, gfp_t gfp)
13678 {
13679 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13680 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13681 struct sk_buff *msg;
13682
13683 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13684
13685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13686 if (!msg)
13687 return;
13688
13689 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13690 rdev, dev, mac_addr, sinfo) < 0) {
13691 nlmsg_free(msg);
13692 return;
13693 }
13694
13695 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13696 NL80211_MCGRP_MLME, gfp);
13697 }
13698 EXPORT_SYMBOL(cfg80211_new_sta);
13699
13700 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13701 struct station_info *sinfo, gfp_t gfp)
13702 {
13703 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13704 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13705 struct sk_buff *msg;
13706 struct station_info empty_sinfo = {};
13707
13708 if (!sinfo)
13709 sinfo = &empty_sinfo;
13710
13711 trace_cfg80211_del_sta(dev, mac_addr);
13712
13713 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13714 if (!msg)
13715 return;
13716
13717 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13718 rdev, dev, mac_addr, sinfo) < 0) {
13719 nlmsg_free(msg);
13720 return;
13721 }
13722
13723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13724 NL80211_MCGRP_MLME, gfp);
13725 }
13726 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13727
13728 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13729 enum nl80211_connect_failed_reason reason,
13730 gfp_t gfp)
13731 {
13732 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13733 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13734 struct sk_buff *msg;
13735 void *hdr;
13736
13737 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13738 if (!msg)
13739 return;
13740
13741 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13742 if (!hdr) {
13743 nlmsg_free(msg);
13744 return;
13745 }
13746
13747 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13748 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13749 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13750 goto nla_put_failure;
13751
13752 genlmsg_end(msg, hdr);
13753
13754 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13755 NL80211_MCGRP_MLME, gfp);
13756 return;
13757
13758 nla_put_failure:
13759 genlmsg_cancel(msg, hdr);
13760 nlmsg_free(msg);
13761 }
13762 EXPORT_SYMBOL(cfg80211_conn_failed);
13763
13764 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13765 const u8 *addr, gfp_t gfp)
13766 {
13767 struct wireless_dev *wdev = dev->ieee80211_ptr;
13768 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13769 struct sk_buff *msg;
13770 void *hdr;
13771 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13772
13773 if (!nlportid)
13774 return false;
13775
13776 msg = nlmsg_new(100, gfp);
13777 if (!msg)
13778 return true;
13779
13780 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13781 if (!hdr) {
13782 nlmsg_free(msg);
13783 return true;
13784 }
13785
13786 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13787 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13788 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13789 goto nla_put_failure;
13790
13791 genlmsg_end(msg, hdr);
13792 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13793 return true;
13794
13795 nla_put_failure:
13796 genlmsg_cancel(msg, hdr);
13797 nlmsg_free(msg);
13798 return true;
13799 }
13800
13801 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13802 const u8 *addr, gfp_t gfp)
13803 {
13804 struct wireless_dev *wdev = dev->ieee80211_ptr;
13805 bool ret;
13806
13807 trace_cfg80211_rx_spurious_frame(dev, addr);
13808
13809 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13810 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13811 trace_cfg80211_return_bool(false);
13812 return false;
13813 }
13814 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13815 addr, gfp);
13816 trace_cfg80211_return_bool(ret);
13817 return ret;
13818 }
13819 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13820
13821 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13822 const u8 *addr, gfp_t gfp)
13823 {
13824 struct wireless_dev *wdev = dev->ieee80211_ptr;
13825 bool ret;
13826
13827 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13828
13829 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13830 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13831 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13832 trace_cfg80211_return_bool(false);
13833 return false;
13834 }
13835 ret = __nl80211_unexpected_frame(dev,
13836 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13837 addr, gfp);
13838 trace_cfg80211_return_bool(ret);
13839 return ret;
13840 }
13841 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13842
13843 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13844 struct wireless_dev *wdev, u32 nlportid,
13845 int freq, int sig_dbm,
13846 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13847 {
13848 struct net_device *netdev = wdev->netdev;
13849 struct sk_buff *msg;
13850 void *hdr;
13851
13852 msg = nlmsg_new(100 + len, gfp);
13853 if (!msg)
13854 return -ENOMEM;
13855
13856 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13857 if (!hdr) {
13858 nlmsg_free(msg);
13859 return -ENOMEM;
13860 }
13861
13862 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13863 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13864 netdev->ifindex)) ||
13865 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13866 NL80211_ATTR_PAD) ||
13867 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13868 (sig_dbm &&
13869 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13870 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13871 (flags &&
13872 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13873 goto nla_put_failure;
13874
13875 genlmsg_end(msg, hdr);
13876
13877 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13878
13879 nla_put_failure:
13880 genlmsg_cancel(msg, hdr);
13881 nlmsg_free(msg);
13882 return -ENOBUFS;
13883 }
13884
13885 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13886 const u8 *buf, size_t len, bool ack, gfp_t gfp)
13887 {
13888 struct wiphy *wiphy = wdev->wiphy;
13889 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13890 struct net_device *netdev = wdev->netdev;
13891 struct sk_buff *msg;
13892 void *hdr;
13893
13894 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13895
13896 msg = nlmsg_new(100 + len, gfp);
13897 if (!msg)
13898 return;
13899
13900 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13901 if (!hdr) {
13902 nlmsg_free(msg);
13903 return;
13904 }
13905
13906 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13907 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13908 netdev->ifindex)) ||
13909 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13910 NL80211_ATTR_PAD) ||
13911 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13912 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13913 NL80211_ATTR_PAD) ||
13914 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13915 goto nla_put_failure;
13916
13917 genlmsg_end(msg, hdr);
13918
13919 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13920 NL80211_MCGRP_MLME, gfp);
13921 return;
13922
13923 nla_put_failure:
13924 genlmsg_cancel(msg, hdr);
13925 nlmsg_free(msg);
13926 }
13927 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13928
13929 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13930 const char *mac, gfp_t gfp)
13931 {
13932 struct wireless_dev *wdev = dev->ieee80211_ptr;
13933 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13934 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13935 void **cb;
13936
13937 if (!msg)
13938 return NULL;
13939
13940 cb = (void **)msg->cb;
13941
13942 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13943 if (!cb[0]) {
13944 nlmsg_free(msg);
13945 return NULL;
13946 }
13947
13948 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13949 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13950 goto nla_put_failure;
13951
13952 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13953 goto nla_put_failure;
13954
13955 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13956 if (!cb[1])
13957 goto nla_put_failure;
13958
13959 cb[2] = rdev;
13960
13961 return msg;
13962 nla_put_failure:
13963 nlmsg_free(msg);
13964 return NULL;
13965 }
13966
13967 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13968 {
13969 void **cb = (void **)msg->cb;
13970 struct cfg80211_registered_device *rdev = cb[2];
13971
13972 nla_nest_end(msg, cb[1]);
13973 genlmsg_end(msg, cb[0]);
13974
13975 memset(msg->cb, 0, sizeof(msg->cb));
13976
13977 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13978 NL80211_MCGRP_MLME, gfp);
13979 }
13980
13981 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13982 enum nl80211_cqm_rssi_threshold_event rssi_event,
13983 s32 rssi_level, gfp_t gfp)
13984 {
13985 struct sk_buff *msg;
13986
13987 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
13988
13989 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13990 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13991 return;
13992
13993 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13994 if (!msg)
13995 return;
13996
13997 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13998 rssi_event))
13999 goto nla_put_failure;
14000
14001 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14002 rssi_level))
14003 goto nla_put_failure;
14004
14005 cfg80211_send_cqm(msg, gfp);
14006
14007 return;
14008
14009 nla_put_failure:
14010 nlmsg_free(msg);
14011 }
14012 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14013
14014 void cfg80211_cqm_txe_notify(struct net_device *dev,
14015 const u8 *peer, u32 num_packets,
14016 u32 rate, u32 intvl, gfp_t gfp)
14017 {
14018 struct sk_buff *msg;
14019
14020 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14021 if (!msg)
14022 return;
14023
14024 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14025 goto nla_put_failure;
14026
14027 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14028 goto nla_put_failure;
14029
14030 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14031 goto nla_put_failure;
14032
14033 cfg80211_send_cqm(msg, gfp);
14034 return;
14035
14036 nla_put_failure:
14037 nlmsg_free(msg);
14038 }
14039 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14040
14041 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14042 const u8 *peer, u32 num_packets, gfp_t gfp)
14043 {
14044 struct sk_buff *msg;
14045
14046 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14047
14048 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14049 if (!msg)
14050 return;
14051
14052 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14053 goto nla_put_failure;
14054
14055 cfg80211_send_cqm(msg, gfp);
14056 return;
14057
14058 nla_put_failure:
14059 nlmsg_free(msg);
14060 }
14061 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14062
14063 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14064 {
14065 struct sk_buff *msg;
14066
14067 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14068 if (!msg)
14069 return;
14070
14071 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14072 goto nla_put_failure;
14073
14074 cfg80211_send_cqm(msg, gfp);
14075 return;
14076
14077 nla_put_failure:
14078 nlmsg_free(msg);
14079 }
14080 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14081
14082 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14083 struct net_device *netdev, const u8 *bssid,
14084 const u8 *replay_ctr, gfp_t gfp)
14085 {
14086 struct sk_buff *msg;
14087 struct nlattr *rekey_attr;
14088 void *hdr;
14089
14090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14091 if (!msg)
14092 return;
14093
14094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14095 if (!hdr) {
14096 nlmsg_free(msg);
14097 return;
14098 }
14099
14100 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14101 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14102 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14103 goto nla_put_failure;
14104
14105 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14106 if (!rekey_attr)
14107 goto nla_put_failure;
14108
14109 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14110 NL80211_REPLAY_CTR_LEN, replay_ctr))
14111 goto nla_put_failure;
14112
14113 nla_nest_end(msg, rekey_attr);
14114
14115 genlmsg_end(msg, hdr);
14116
14117 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14118 NL80211_MCGRP_MLME, gfp);
14119 return;
14120
14121 nla_put_failure:
14122 genlmsg_cancel(msg, hdr);
14123 nlmsg_free(msg);
14124 }
14125
14126 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14127 const u8 *replay_ctr, gfp_t gfp)
14128 {
14129 struct wireless_dev *wdev = dev->ieee80211_ptr;
14130 struct wiphy *wiphy = wdev->wiphy;
14131 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14132
14133 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14134 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14135 }
14136 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14137
14138 static void
14139 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14140 struct net_device *netdev, int index,
14141 const u8 *bssid, bool preauth, gfp_t gfp)
14142 {
14143 struct sk_buff *msg;
14144 struct nlattr *attr;
14145 void *hdr;
14146
14147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14148 if (!msg)
14149 return;
14150
14151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14152 if (!hdr) {
14153 nlmsg_free(msg);
14154 return;
14155 }
14156
14157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14158 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14159 goto nla_put_failure;
14160
14161 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14162 if (!attr)
14163 goto nla_put_failure;
14164
14165 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14166 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14167 (preauth &&
14168 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14169 goto nla_put_failure;
14170
14171 nla_nest_end(msg, attr);
14172
14173 genlmsg_end(msg, hdr);
14174
14175 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14176 NL80211_MCGRP_MLME, gfp);
14177 return;
14178
14179 nla_put_failure:
14180 genlmsg_cancel(msg, hdr);
14181 nlmsg_free(msg);
14182 }
14183
14184 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14185 const u8 *bssid, bool preauth, gfp_t gfp)
14186 {
14187 struct wireless_dev *wdev = dev->ieee80211_ptr;
14188 struct wiphy *wiphy = wdev->wiphy;
14189 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14190
14191 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14192 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14193 }
14194 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14195
14196 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14197 struct net_device *netdev,
14198 struct cfg80211_chan_def *chandef,
14199 gfp_t gfp,
14200 enum nl80211_commands notif,
14201 u8 count)
14202 {
14203 struct sk_buff *msg;
14204 void *hdr;
14205
14206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14207 if (!msg)
14208 return;
14209
14210 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14211 if (!hdr) {
14212 nlmsg_free(msg);
14213 return;
14214 }
14215
14216 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14217 goto nla_put_failure;
14218
14219 if (nl80211_send_chandef(msg, chandef))
14220 goto nla_put_failure;
14221
14222 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14223 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14224 goto nla_put_failure;
14225
14226 genlmsg_end(msg, hdr);
14227
14228 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14229 NL80211_MCGRP_MLME, gfp);
14230 return;
14231
14232 nla_put_failure:
14233 genlmsg_cancel(msg, hdr);
14234 nlmsg_free(msg);
14235 }
14236
14237 void cfg80211_ch_switch_notify(struct net_device *dev,
14238 struct cfg80211_chan_def *chandef)
14239 {
14240 struct wireless_dev *wdev = dev->ieee80211_ptr;
14241 struct wiphy *wiphy = wdev->wiphy;
14242 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14243
14244 ASSERT_WDEV_LOCK(wdev);
14245
14246 trace_cfg80211_ch_switch_notify(dev, chandef);
14247
14248 wdev->chandef = *chandef;
14249 wdev->preset_chandef = *chandef;
14250 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14251 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14252 }
14253 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14254
14255 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14256 struct cfg80211_chan_def *chandef,
14257 u8 count)
14258 {
14259 struct wireless_dev *wdev = dev->ieee80211_ptr;
14260 struct wiphy *wiphy = wdev->wiphy;
14261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14262
14263 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14264
14265 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14266 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14267 }
14268 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14269
14270 void
14271 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14272 const struct cfg80211_chan_def *chandef,
14273 enum nl80211_radar_event event,
14274 struct net_device *netdev, gfp_t gfp)
14275 {
14276 struct sk_buff *msg;
14277 void *hdr;
14278
14279 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14280 if (!msg)
14281 return;
14282
14283 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14284 if (!hdr) {
14285 nlmsg_free(msg);
14286 return;
14287 }
14288
14289 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14290 goto nla_put_failure;
14291
14292 /* NOP and radar events don't need a netdev parameter */
14293 if (netdev) {
14294 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14295
14296 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14297 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14298 NL80211_ATTR_PAD))
14299 goto nla_put_failure;
14300 }
14301
14302 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14303 goto nla_put_failure;
14304
14305 if (nl80211_send_chandef(msg, chandef))
14306 goto nla_put_failure;
14307
14308 genlmsg_end(msg, hdr);
14309
14310 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14311 NL80211_MCGRP_MLME, gfp);
14312 return;
14313
14314 nla_put_failure:
14315 genlmsg_cancel(msg, hdr);
14316 nlmsg_free(msg);
14317 }
14318
14319 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14320 u64 cookie, bool acked, gfp_t gfp)
14321 {
14322 struct wireless_dev *wdev = dev->ieee80211_ptr;
14323 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14324 struct sk_buff *msg;
14325 void *hdr;
14326
14327 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14328
14329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14330
14331 if (!msg)
14332 return;
14333
14334 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14335 if (!hdr) {
14336 nlmsg_free(msg);
14337 return;
14338 }
14339
14340 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14341 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14342 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14343 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14344 NL80211_ATTR_PAD) ||
14345 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14346 goto nla_put_failure;
14347
14348 genlmsg_end(msg, hdr);
14349
14350 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14351 NL80211_MCGRP_MLME, gfp);
14352 return;
14353
14354 nla_put_failure:
14355 genlmsg_cancel(msg, hdr);
14356 nlmsg_free(msg);
14357 }
14358 EXPORT_SYMBOL(cfg80211_probe_status);
14359
14360 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14361 const u8 *frame, size_t len,
14362 int freq, int sig_dbm)
14363 {
14364 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14365 struct sk_buff *msg;
14366 void *hdr;
14367 struct cfg80211_beacon_registration *reg;
14368
14369 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14370
14371 spin_lock_bh(&rdev->beacon_registrations_lock);
14372 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14373 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14374 if (!msg) {
14375 spin_unlock_bh(&rdev->beacon_registrations_lock);
14376 return;
14377 }
14378
14379 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14380 if (!hdr)
14381 goto nla_put_failure;
14382
14383 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14384 (freq &&
14385 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14386 (sig_dbm &&
14387 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14388 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14389 goto nla_put_failure;
14390
14391 genlmsg_end(msg, hdr);
14392
14393 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14394 }
14395 spin_unlock_bh(&rdev->beacon_registrations_lock);
14396 return;
14397
14398 nla_put_failure:
14399 spin_unlock_bh(&rdev->beacon_registrations_lock);
14400 if (hdr)
14401 genlmsg_cancel(msg, hdr);
14402 nlmsg_free(msg);
14403 }
14404 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14405
14406 #ifdef CONFIG_PM
14407 static int cfg80211_net_detect_results(struct sk_buff *msg,
14408 struct cfg80211_wowlan_wakeup *wakeup)
14409 {
14410 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14411 struct nlattr *nl_results, *nl_match, *nl_freqs;
14412 int i, j;
14413
14414 nl_results = nla_nest_start(
14415 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14416 if (!nl_results)
14417 return -EMSGSIZE;
14418
14419 for (i = 0; i < nd->n_matches; i++) {
14420 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14421
14422 nl_match = nla_nest_start(msg, i);
14423 if (!nl_match)
14424 break;
14425
14426 /* The SSID attribute is optional in nl80211, but for
14427 * simplicity reasons it's always present in the
14428 * cfg80211 structure. If a driver can't pass the
14429 * SSID, that needs to be changed. A zero length SSID
14430 * is still a valid SSID (wildcard), so it cannot be
14431 * used for this purpose.
14432 */
14433 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14434 match->ssid.ssid)) {
14435 nla_nest_cancel(msg, nl_match);
14436 goto out;
14437 }
14438
14439 if (match->n_channels) {
14440 nl_freqs = nla_nest_start(
14441 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14442 if (!nl_freqs) {
14443 nla_nest_cancel(msg, nl_match);
14444 goto out;
14445 }
14446
14447 for (j = 0; j < match->n_channels; j++) {
14448 if (nla_put_u32(msg, j, match->channels[j])) {
14449 nla_nest_cancel(msg, nl_freqs);
14450 nla_nest_cancel(msg, nl_match);
14451 goto out;
14452 }
14453 }
14454
14455 nla_nest_end(msg, nl_freqs);
14456 }
14457
14458 nla_nest_end(msg, nl_match);
14459 }
14460
14461 out:
14462 nla_nest_end(msg, nl_results);
14463 return 0;
14464 }
14465
14466 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14467 struct cfg80211_wowlan_wakeup *wakeup,
14468 gfp_t gfp)
14469 {
14470 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14471 struct sk_buff *msg;
14472 void *hdr;
14473 int size = 200;
14474
14475 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14476
14477 if (wakeup)
14478 size += wakeup->packet_present_len;
14479
14480 msg = nlmsg_new(size, gfp);
14481 if (!msg)
14482 return;
14483
14484 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14485 if (!hdr)
14486 goto free_msg;
14487
14488 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14489 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14490 NL80211_ATTR_PAD))
14491 goto free_msg;
14492
14493 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14494 wdev->netdev->ifindex))
14495 goto free_msg;
14496
14497 if (wakeup) {
14498 struct nlattr *reasons;
14499
14500 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14501 if (!reasons)
14502 goto free_msg;
14503
14504 if (wakeup->disconnect &&
14505 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14506 goto free_msg;
14507 if (wakeup->magic_pkt &&
14508 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14509 goto free_msg;
14510 if (wakeup->gtk_rekey_failure &&
14511 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14512 goto free_msg;
14513 if (wakeup->eap_identity_req &&
14514 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14515 goto free_msg;
14516 if (wakeup->four_way_handshake &&
14517 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14518 goto free_msg;
14519 if (wakeup->rfkill_release &&
14520 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14521 goto free_msg;
14522
14523 if (wakeup->pattern_idx >= 0 &&
14524 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14525 wakeup->pattern_idx))
14526 goto free_msg;
14527
14528 if (wakeup->tcp_match &&
14529 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14530 goto free_msg;
14531
14532 if (wakeup->tcp_connlost &&
14533 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14534 goto free_msg;
14535
14536 if (wakeup->tcp_nomoretokens &&
14537 nla_put_flag(msg,
14538 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14539 goto free_msg;
14540
14541 if (wakeup->packet) {
14542 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14543 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14544
14545 if (!wakeup->packet_80211) {
14546 pkt_attr =
14547 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14548 len_attr =
14549 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14550 }
14551
14552 if (wakeup->packet_len &&
14553 nla_put_u32(msg, len_attr, wakeup->packet_len))
14554 goto free_msg;
14555
14556 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14557 wakeup->packet))
14558 goto free_msg;
14559 }
14560
14561 if (wakeup->net_detect &&
14562 cfg80211_net_detect_results(msg, wakeup))
14563 goto free_msg;
14564
14565 nla_nest_end(msg, reasons);
14566 }
14567
14568 genlmsg_end(msg, hdr);
14569
14570 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14571 NL80211_MCGRP_MLME, gfp);
14572 return;
14573
14574 free_msg:
14575 nlmsg_free(msg);
14576 }
14577 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14578 #endif
14579
14580 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14581 enum nl80211_tdls_operation oper,
14582 u16 reason_code, gfp_t gfp)
14583 {
14584 struct wireless_dev *wdev = dev->ieee80211_ptr;
14585 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14586 struct sk_buff *msg;
14587 void *hdr;
14588
14589 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14590 reason_code);
14591
14592 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14593 if (!msg)
14594 return;
14595
14596 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14597 if (!hdr) {
14598 nlmsg_free(msg);
14599 return;
14600 }
14601
14602 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14603 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14604 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14605 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14606 (reason_code > 0 &&
14607 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14608 goto nla_put_failure;
14609
14610 genlmsg_end(msg, hdr);
14611
14612 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14613 NL80211_MCGRP_MLME, gfp);
14614 return;
14615
14616 nla_put_failure:
14617 genlmsg_cancel(msg, hdr);
14618 nlmsg_free(msg);
14619 }
14620 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14621
14622 static int nl80211_netlink_notify(struct notifier_block * nb,
14623 unsigned long state,
14624 void *_notify)
14625 {
14626 struct netlink_notify *notify = _notify;
14627 struct cfg80211_registered_device *rdev;
14628 struct wireless_dev *wdev;
14629 struct cfg80211_beacon_registration *reg, *tmp;
14630
14631 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14632 return NOTIFY_DONE;
14633
14634 rcu_read_lock();
14635
14636 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14637 bool schedule_destroy_work = false;
14638 struct cfg80211_sched_scan_request *sched_scan_req =
14639 rcu_dereference(rdev->sched_scan_req);
14640
14641 if (sched_scan_req && notify->portid &&
14642 sched_scan_req->owner_nlportid == notify->portid) {
14643 sched_scan_req->owner_nlportid = 0;
14644
14645 if (rdev->ops->sched_scan_stop &&
14646 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14647 schedule_work(&rdev->sched_scan_stop_wk);
14648 }
14649
14650 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14651 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14652
14653 if (wdev->owner_nlportid == notify->portid)
14654 schedule_destroy_work = true;
14655 else if (wdev->conn_owner_nlportid == notify->portid)
14656 schedule_work(&wdev->disconnect_wk);
14657 }
14658
14659 spin_lock_bh(&rdev->beacon_registrations_lock);
14660 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14661 list) {
14662 if (reg->nlportid == notify->portid) {
14663 list_del(&reg->list);
14664 kfree(reg);
14665 break;
14666 }
14667 }
14668 spin_unlock_bh(&rdev->beacon_registrations_lock);
14669
14670 if (schedule_destroy_work) {
14671 struct cfg80211_iface_destroy *destroy;
14672
14673 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14674 if (destroy) {
14675 destroy->nlportid = notify->portid;
14676 spin_lock(&rdev->destroy_list_lock);
14677 list_add(&destroy->list, &rdev->destroy_list);
14678 spin_unlock(&rdev->destroy_list_lock);
14679 schedule_work(&rdev->destroy_work);
14680 }
14681 }
14682 }
14683
14684 rcu_read_unlock();
14685
14686 /*
14687 * It is possible that the user space process that is controlling the
14688 * indoor setting disappeared, so notify the regulatory core.
14689 */
14690 regulatory_netlink_notify(notify->portid);
14691 return NOTIFY_OK;
14692 }
14693
14694 static struct notifier_block nl80211_netlink_notifier = {
14695 .notifier_call = nl80211_netlink_notify,
14696 };
14697
14698 void cfg80211_ft_event(struct net_device *netdev,
14699 struct cfg80211_ft_event_params *ft_event)
14700 {
14701 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14702 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14703 struct sk_buff *msg;
14704 void *hdr;
14705
14706 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14707
14708 if (!ft_event->target_ap)
14709 return;
14710
14711 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
14712 if (!msg)
14713 return;
14714
14715 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14716 if (!hdr)
14717 goto out;
14718
14719 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14720 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14721 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14722 goto out;
14723
14724 if (ft_event->ies &&
14725 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14726 goto out;
14727 if (ft_event->ric_ies &&
14728 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14729 ft_event->ric_ies))
14730 goto out;
14731
14732 genlmsg_end(msg, hdr);
14733
14734 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14735 NL80211_MCGRP_MLME, GFP_KERNEL);
14736 return;
14737 out:
14738 nlmsg_free(msg);
14739 }
14740 EXPORT_SYMBOL(cfg80211_ft_event);
14741
14742 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14743 {
14744 struct cfg80211_registered_device *rdev;
14745 struct sk_buff *msg;
14746 void *hdr;
14747 u32 nlportid;
14748
14749 rdev = wiphy_to_rdev(wdev->wiphy);
14750 if (!rdev->crit_proto_nlportid)
14751 return;
14752
14753 nlportid = rdev->crit_proto_nlportid;
14754 rdev->crit_proto_nlportid = 0;
14755
14756 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14757 if (!msg)
14758 return;
14759
14760 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14761 if (!hdr)
14762 goto nla_put_failure;
14763
14764 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14765 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14766 NL80211_ATTR_PAD))
14767 goto nla_put_failure;
14768
14769 genlmsg_end(msg, hdr);
14770
14771 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14772 return;
14773
14774 nla_put_failure:
14775 if (hdr)
14776 genlmsg_cancel(msg, hdr);
14777 nlmsg_free(msg);
14778 }
14779 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14780
14781 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14782 {
14783 struct wiphy *wiphy = wdev->wiphy;
14784 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14785 struct sk_buff *msg;
14786 void *hdr;
14787
14788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14789 if (!msg)
14790 return;
14791
14792 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14793 if (!hdr)
14794 goto out;
14795
14796 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14797 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14798 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14799 NL80211_ATTR_PAD))
14800 goto out;
14801
14802 genlmsg_end(msg, hdr);
14803
14804 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14805 NL80211_MCGRP_MLME, GFP_KERNEL);
14806 return;
14807 out:
14808 nlmsg_free(msg);
14809 }
14810
14811 /* initialisation/exit functions */
14812
14813 int __init nl80211_init(void)
14814 {
14815 int err;
14816
14817 err = genl_register_family(&nl80211_fam);
14818 if (err)
14819 return err;
14820
14821 err = netlink_register_notifier(&nl80211_netlink_notifier);
14822 if (err)
14823 goto err_out;
14824
14825 return 0;
14826 err_out:
14827 genl_unregister_family(&nl80211_fam);
14828 return err;
14829 }
14830
14831 void nl80211_exit(void)
14832 {
14833 netlink_unregister_notifier(&nl80211_netlink_notifier);
14834 genl_unregister_family(&nl80211_fam);
14835 }
Linux with added FPC-III support