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