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nl80211: Fix a GET_KEY reply attribute
[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/nospec.h>
20 #include <linux/etherdevice.h>
21 #include <net/net_namespace.h>
22 #include <net/genetlink.h>
23 #include <net/cfg80211.h>
24 #include <net/sock.h>
25 #include <net/inet_connection_sock.h>
26 #include "core.h"
27 #include "nl80211.h"
28 #include "reg.h"
29 #include "rdev-ops.h"
30
31 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
32 struct genl_info *info,
33 struct cfg80211_crypto_settings *settings,
34 int cipher_limit);
35
36 /* the netlink family */
37 static struct genl_family nl80211_fam;
38
39 /* multicast groups */
40 enum nl80211_multicast_groups {
41 NL80211_MCGRP_CONFIG,
42 NL80211_MCGRP_SCAN,
43 NL80211_MCGRP_REGULATORY,
44 NL80211_MCGRP_MLME,
45 NL80211_MCGRP_VENDOR,
46 NL80211_MCGRP_NAN,
47 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
48 };
49
50 static const struct genl_multicast_group nl80211_mcgrps[] = {
51 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
52 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
53 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
54 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
55 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
56 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
57 #ifdef CONFIG_NL80211_TESTMODE
58 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
59 #endif
60 };
61
62 /* returns ERR_PTR values */
63 static struct wireless_dev *
64 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
65 {
66 struct cfg80211_registered_device *rdev;
67 struct wireless_dev *result = NULL;
68 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
69 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
70 u64 wdev_id;
71 int wiphy_idx = -1;
72 int ifidx = -1;
73
74 ASSERT_RTNL();
75
76 if (!have_ifidx && !have_wdev_id)
77 return ERR_PTR(-EINVAL);
78
79 if (have_ifidx)
80 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
81 if (have_wdev_id) {
82 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
83 wiphy_idx = wdev_id >> 32;
84 }
85
86 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
87 struct wireless_dev *wdev;
88
89 if (wiphy_net(&rdev->wiphy) != netns)
90 continue;
91
92 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
93 continue;
94
95 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
96 if (have_ifidx && wdev->netdev &&
97 wdev->netdev->ifindex == ifidx) {
98 result = wdev;
99 break;
100 }
101 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
102 result = wdev;
103 break;
104 }
105 }
106
107 if (result)
108 break;
109 }
110
111 if (result)
112 return result;
113 return ERR_PTR(-ENODEV);
114 }
115
116 static struct cfg80211_registered_device *
117 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
118 {
119 struct cfg80211_registered_device *rdev = NULL, *tmp;
120 struct net_device *netdev;
121
122 ASSERT_RTNL();
123
124 if (!attrs[NL80211_ATTR_WIPHY] &&
125 !attrs[NL80211_ATTR_IFINDEX] &&
126 !attrs[NL80211_ATTR_WDEV])
127 return ERR_PTR(-EINVAL);
128
129 if (attrs[NL80211_ATTR_WIPHY])
130 rdev = cfg80211_rdev_by_wiphy_idx(
131 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
132
133 if (attrs[NL80211_ATTR_WDEV]) {
134 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
135 struct wireless_dev *wdev;
136 bool found = false;
137
138 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
139 if (tmp) {
140 /* make sure wdev exists */
141 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
142 if (wdev->identifier != (u32)wdev_id)
143 continue;
144 found = true;
145 break;
146 }
147
148 if (!found)
149 tmp = NULL;
150
151 if (rdev && tmp != rdev)
152 return ERR_PTR(-EINVAL);
153 rdev = tmp;
154 }
155 }
156
157 if (attrs[NL80211_ATTR_IFINDEX]) {
158 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
159
160 netdev = __dev_get_by_index(netns, ifindex);
161 if (netdev) {
162 if (netdev->ieee80211_ptr)
163 tmp = wiphy_to_rdev(
164 netdev->ieee80211_ptr->wiphy);
165 else
166 tmp = NULL;
167
168 /* not wireless device -- return error */
169 if (!tmp)
170 return ERR_PTR(-EINVAL);
171
172 /* mismatch -- return error */
173 if (rdev && tmp != rdev)
174 return ERR_PTR(-EINVAL);
175
176 rdev = tmp;
177 }
178 }
179
180 if (!rdev)
181 return ERR_PTR(-ENODEV);
182
183 if (netns != wiphy_net(&rdev->wiphy))
184 return ERR_PTR(-ENODEV);
185
186 return rdev;
187 }
188
189 /*
190 * This function returns a pointer to the driver
191 * that the genl_info item that is passed refers to.
192 *
193 * The result of this can be a PTR_ERR and hence must
194 * be checked with IS_ERR() for errors.
195 */
196 static struct cfg80211_registered_device *
197 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
198 {
199 return __cfg80211_rdev_from_attrs(netns, info->attrs);
200 }
201
202 static int validate_beacon_head(const struct nlattr *attr,
203 struct netlink_ext_ack *extack)
204 {
205 const u8 *data = nla_data(attr);
206 unsigned int len = nla_len(attr);
207 const struct element *elem;
208 const struct ieee80211_mgmt *mgmt = (void *)data;
209 unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
210 u.beacon.variable);
211
212 if (len < fixedlen)
213 goto err;
214
215 if (ieee80211_hdrlen(mgmt->frame_control) !=
216 offsetof(struct ieee80211_mgmt, u.beacon))
217 goto err;
218
219 data += fixedlen;
220 len -= fixedlen;
221
222 for_each_element(elem, data, len) {
223 /* nothing */
224 }
225
226 if (for_each_element_completed(elem, data, len))
227 return 0;
228
229 err:
230 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
231 return -EINVAL;
232 }
233
234 /* policy for the attributes */
235 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
236 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
237 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
238 .len = 20-1 },
239 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
240
241 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
242 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
243 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
244 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
245 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
248 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
249 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
250 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
251 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
252 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
253
254 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
255 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
256 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
257
258 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
259 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
260
261 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
262 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
263 .len = WLAN_MAX_KEY_LEN },
264 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
265 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
266 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
267 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
268 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
269
270 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
271 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
272 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
273 .len = IEEE80211_MAX_DATA_LEN },
274 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
275 .len = IEEE80211_MAX_DATA_LEN },
276 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
277 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
278 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
279 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
280 .len = NL80211_MAX_SUPP_RATES },
281 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
282 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
283 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
284 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_MESH_ID_LEN },
286 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_BINARY,
287 .len = ETH_ALEN },
288
289 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
290 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
291
292 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
293 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
294 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
295 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
296 .len = NL80211_MAX_SUPP_RATES },
297 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
298
299 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
300 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
301
302 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
303
304 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
305 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
306 .len = IEEE80211_MAX_DATA_LEN },
307 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
308 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
309
310 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
311 .len = IEEE80211_MAX_SSID_LEN },
312 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
313 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
314 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
315 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
316 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
317 [NL80211_ATTR_STA_FLAGS2] = {
318 .len = sizeof(struct nl80211_sta_flag_update),
319 },
320 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
321 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
322 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
323 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
324 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
325 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
326 [NL80211_ATTR_PID] = { .type = NLA_U32 },
327 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
328 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
329 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
330 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
331 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
332 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
335 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
336 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
337 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
338 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
339 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
340 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
341 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
342 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
343 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
344 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
345 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
346 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
347 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
348 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
349 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
350 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
351 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
352 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
353 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
354 .len = IEEE80211_MAX_DATA_LEN },
355 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
356 .len = IEEE80211_MAX_DATA_LEN },
357 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
358 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
359 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
360 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
361 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
362 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
363 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
364 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
365 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
366 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
367 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
368 .len = IEEE80211_MAX_DATA_LEN },
369 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
370 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
371 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
372 .len = NL80211_HT_CAPABILITY_LEN
373 },
374 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
375 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
376 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
377 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
378 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
379 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
380 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
381 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
382 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
383 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
384 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
385 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
386 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
387 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
388 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
389 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
390 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
391 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
392 .len = NL80211_VHT_CAPABILITY_LEN,
393 },
394 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
395 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
396 .len = IEEE80211_MAX_DATA_LEN },
397 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
398 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
399 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
400 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
401 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
402 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
403 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
404 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
405 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
406 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
407 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
408 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
409 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
410 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
411 .len = IEEE80211_QOS_MAP_LEN_MAX },
412 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
413 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
414 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
415 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
416 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
417 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
418 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
419 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
420 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
421 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
422 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
423 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
424 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
425 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
426 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
427 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
428 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
429 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
430 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
431 .len = VHT_MUMIMO_GROUPS_DATA_LEN
432 },
433 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
434 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
435 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
436 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
437 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
438 .len = FILS_MAX_KEK_LEN },
439 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
440 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
441 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
442 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
443 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
444 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
445 },
446 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
447 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
448 .len = FILS_ERP_MAX_USERNAME_LEN },
449 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
450 .len = FILS_ERP_MAX_REALM_LEN },
451 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
452 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
453 .len = FILS_ERP_MAX_RRK_LEN },
454 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
455 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
456 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
457 };
458
459 /* policy for the key attributes */
460 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
461 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
462 [NL80211_KEY_IDX] = { .type = NLA_U8 },
463 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
464 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
465 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
466 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
467 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
468 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
469 };
470
471 /* policy for the key default flags */
472 static const struct nla_policy
473 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
474 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
475 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
476 };
477
478 #ifdef CONFIG_PM
479 /* policy for WoWLAN attributes */
480 static const struct nla_policy
481 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
482 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
483 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
484 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
485 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
486 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
487 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
488 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
489 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
490 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
491 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
492 };
493
494 static const struct nla_policy
495 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
496 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
497 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
498 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
499 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
500 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
501 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
502 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
503 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
504 },
505 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
506 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
507 },
508 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
509 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
510 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
511 };
512 #endif /* CONFIG_PM */
513
514 /* policy for coalesce rule attributes */
515 static const struct nla_policy
516 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
517 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
518 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
519 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
520 };
521
522 /* policy for GTK rekey offload attributes */
523 static const struct nla_policy
524 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
525 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
526 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
527 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
528 };
529
530 static const struct nla_policy
531 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
532 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
533 .len = IEEE80211_MAX_SSID_LEN },
534 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
535 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
536 };
537
538 static const struct nla_policy
539 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
540 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
541 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
542 };
543
544 static const struct nla_policy
545 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
546 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
547 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
548 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
549 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
550 },
551 };
552
553 /* policy for NAN function attributes */
554 static const struct nla_policy
555 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
556 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
557 [NL80211_NAN_FUNC_SERVICE_ID] = {
558 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
559 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
560 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
561 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
562 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
563 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
564 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
565 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
566 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
567 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
568 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
569 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
570 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
571 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
572 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
573 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
574 };
575
576 /* policy for Service Response Filter attributes */
577 static const struct nla_policy
578 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
579 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
580 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
581 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
582 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
583 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
584 };
585
586 /* policy for packet pattern attributes */
587 static const struct nla_policy
588 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
589 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
590 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
591 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
592 };
593
594 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
595 struct netlink_callback *cb,
596 struct cfg80211_registered_device **rdev,
597 struct wireless_dev **wdev)
598 {
599 int err;
600
601 if (!cb->args[0]) {
602 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
603 genl_family_attrbuf(&nl80211_fam),
604 nl80211_fam.maxattr, nl80211_policy, NULL);
605 if (err)
606 return err;
607
608 *wdev = __cfg80211_wdev_from_attrs(
609 sock_net(skb->sk),
610 genl_family_attrbuf(&nl80211_fam));
611 if (IS_ERR(*wdev))
612 return PTR_ERR(*wdev);
613 *rdev = wiphy_to_rdev((*wdev)->wiphy);
614 /* 0 is the first index - add 1 to parse only once */
615 cb->args[0] = (*rdev)->wiphy_idx + 1;
616 cb->args[1] = (*wdev)->identifier;
617 } else {
618 /* subtract the 1 again here */
619 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
620 struct wireless_dev *tmp;
621
622 if (!wiphy)
623 return -ENODEV;
624 *rdev = wiphy_to_rdev(wiphy);
625 *wdev = NULL;
626
627 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
628 if (tmp->identifier == cb->args[1]) {
629 *wdev = tmp;
630 break;
631 }
632 }
633
634 if (!*wdev)
635 return -ENODEV;
636 }
637
638 return 0;
639 }
640
641 /* IE validation */
642 static bool is_valid_ie_attr(const struct nlattr *attr)
643 {
644 const u8 *pos;
645 int len;
646
647 if (!attr)
648 return true;
649
650 pos = nla_data(attr);
651 len = nla_len(attr);
652
653 while (len) {
654 u8 elemlen;
655
656 if (len < 2)
657 return false;
658 len -= 2;
659
660 elemlen = pos[1];
661 if (elemlen > len)
662 return false;
663
664 len -= elemlen;
665 pos += 2 + elemlen;
666 }
667
668 return true;
669 }
670
671 /* message building helper */
672 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
673 int flags, u8 cmd)
674 {
675 /* since there is no private header just add the generic one */
676 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
677 }
678
679 static int nl80211_msg_put_channel(struct sk_buff *msg,
680 struct ieee80211_channel *chan,
681 bool large)
682 {
683 /* Some channels must be completely excluded from the
684 * list to protect old user-space tools from breaking
685 */
686 if (!large && chan->flags &
687 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
688 return 0;
689
690 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
691 chan->center_freq))
692 goto nla_put_failure;
693
694 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
695 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
696 goto nla_put_failure;
697 if (chan->flags & IEEE80211_CHAN_NO_IR) {
698 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
699 goto nla_put_failure;
700 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
701 goto nla_put_failure;
702 }
703 if (chan->flags & IEEE80211_CHAN_RADAR) {
704 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
705 goto nla_put_failure;
706 if (large) {
707 u32 time;
708
709 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
710
711 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
712 chan->dfs_state))
713 goto nla_put_failure;
714 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
715 time))
716 goto nla_put_failure;
717 if (nla_put_u32(msg,
718 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
719 chan->dfs_cac_ms))
720 goto nla_put_failure;
721 }
722 }
723
724 if (large) {
725 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
726 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
727 goto nla_put_failure;
728 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
729 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
730 goto nla_put_failure;
731 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
732 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
733 goto nla_put_failure;
734 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
735 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
736 goto nla_put_failure;
737 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
738 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
739 goto nla_put_failure;
740 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
741 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
742 goto nla_put_failure;
743 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
744 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
745 goto nla_put_failure;
746 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
747 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
748 goto nla_put_failure;
749 }
750
751 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
752 DBM_TO_MBM(chan->max_power)))
753 goto nla_put_failure;
754
755 return 0;
756
757 nla_put_failure:
758 return -ENOBUFS;
759 }
760
761 /* netlink command implementations */
762
763 struct key_parse {
764 struct key_params p;
765 int idx;
766 int type;
767 bool def, defmgmt;
768 bool def_uni, def_multi;
769 };
770
771 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
772 {
773 struct nlattr *tb[NL80211_KEY_MAX + 1];
774 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
775 nl80211_key_policy, NULL);
776 if (err)
777 return err;
778
779 k->def = !!tb[NL80211_KEY_DEFAULT];
780 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
781
782 if (k->def) {
783 k->def_uni = true;
784 k->def_multi = true;
785 }
786 if (k->defmgmt)
787 k->def_multi = true;
788
789 if (tb[NL80211_KEY_IDX])
790 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
791
792 if (tb[NL80211_KEY_DATA]) {
793 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
794 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
795 }
796
797 if (tb[NL80211_KEY_SEQ]) {
798 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
799 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
800 }
801
802 if (tb[NL80211_KEY_CIPHER])
803 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
804
805 if (tb[NL80211_KEY_TYPE]) {
806 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
807 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
808 return -EINVAL;
809 }
810
811 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
812 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
813
814 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
815 tb[NL80211_KEY_DEFAULT_TYPES],
816 nl80211_key_default_policy, NULL);
817 if (err)
818 return err;
819
820 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
821 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
822 }
823
824 return 0;
825 }
826
827 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
828 {
829 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
830 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
831 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
832 }
833
834 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
835 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
836 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
837 }
838
839 if (info->attrs[NL80211_ATTR_KEY_IDX])
840 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
841
842 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
843 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
844
845 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
846 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
847
848 if (k->def) {
849 k->def_uni = true;
850 k->def_multi = true;
851 }
852 if (k->defmgmt)
853 k->def_multi = true;
854
855 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
856 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
857 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
858 return -EINVAL;
859 }
860
861 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
862 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
863 int err = nla_parse_nested(kdt,
864 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
865 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
866 nl80211_key_default_policy,
867 info->extack);
868 if (err)
869 return err;
870
871 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
872 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
873 }
874
875 return 0;
876 }
877
878 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
879 {
880 int err;
881
882 memset(k, 0, sizeof(*k));
883 k->idx = -1;
884 k->type = -1;
885
886 if (info->attrs[NL80211_ATTR_KEY])
887 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
888 else
889 err = nl80211_parse_key_old(info, k);
890
891 if (err)
892 return err;
893
894 if (k->def && k->defmgmt)
895 return -EINVAL;
896
897 if (k->defmgmt) {
898 if (k->def_uni || !k->def_multi)
899 return -EINVAL;
900 }
901
902 if (k->idx != -1) {
903 if (k->defmgmt) {
904 if (k->idx < 4 || k->idx > 5)
905 return -EINVAL;
906 } else if (k->def) {
907 if (k->idx < 0 || k->idx > 3)
908 return -EINVAL;
909 } else {
910 if (k->idx < 0 || k->idx > 5)
911 return -EINVAL;
912 }
913 }
914
915 return 0;
916 }
917
918 static struct cfg80211_cached_keys *
919 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
920 struct nlattr *keys, bool *no_ht)
921 {
922 struct key_parse parse;
923 struct nlattr *key;
924 struct cfg80211_cached_keys *result;
925 int rem, err, def = 0;
926 bool have_key = false;
927
928 nla_for_each_nested(key, keys, rem) {
929 have_key = true;
930 break;
931 }
932
933 if (!have_key)
934 return NULL;
935
936 result = kzalloc(sizeof(*result), GFP_KERNEL);
937 if (!result)
938 return ERR_PTR(-ENOMEM);
939
940 result->def = -1;
941
942 nla_for_each_nested(key, keys, rem) {
943 memset(&parse, 0, sizeof(parse));
944 parse.idx = -1;
945
946 err = nl80211_parse_key_new(key, &parse);
947 if (err)
948 goto error;
949 err = -EINVAL;
950 if (!parse.p.key)
951 goto error;
952 if (parse.idx < 0 || parse.idx > 3)
953 goto error;
954 if (parse.def) {
955 if (def)
956 goto error;
957 def = 1;
958 result->def = parse.idx;
959 if (!parse.def_uni || !parse.def_multi)
960 goto error;
961 } else if (parse.defmgmt)
962 goto error;
963 err = cfg80211_validate_key_settings(rdev, &parse.p,
964 parse.idx, false, NULL);
965 if (err)
966 goto error;
967 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
968 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
969 err = -EINVAL;
970 goto error;
971 }
972 result->params[parse.idx].cipher = parse.p.cipher;
973 result->params[parse.idx].key_len = parse.p.key_len;
974 result->params[parse.idx].key = result->data[parse.idx];
975 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
976
977 /* must be WEP key if we got here */
978 if (no_ht)
979 *no_ht = true;
980 }
981
982 if (result->def < 0) {
983 err = -EINVAL;
984 goto error;
985 }
986
987 return result;
988 error:
989 kfree(result);
990 return ERR_PTR(err);
991 }
992
993 static int nl80211_key_allowed(struct wireless_dev *wdev)
994 {
995 ASSERT_WDEV_LOCK(wdev);
996
997 switch (wdev->iftype) {
998 case NL80211_IFTYPE_AP:
999 case NL80211_IFTYPE_AP_VLAN:
1000 case NL80211_IFTYPE_P2P_GO:
1001 case NL80211_IFTYPE_MESH_POINT:
1002 break;
1003 case NL80211_IFTYPE_ADHOC:
1004 case NL80211_IFTYPE_STATION:
1005 case NL80211_IFTYPE_P2P_CLIENT:
1006 if (!wdev->current_bss)
1007 return -ENOLINK;
1008 break;
1009 case NL80211_IFTYPE_UNSPECIFIED:
1010 case NL80211_IFTYPE_OCB:
1011 case NL80211_IFTYPE_MONITOR:
1012 case NL80211_IFTYPE_NAN:
1013 case NL80211_IFTYPE_P2P_DEVICE:
1014 case NL80211_IFTYPE_WDS:
1015 case NUM_NL80211_IFTYPES:
1016 return -EINVAL;
1017 }
1018
1019 return 0;
1020 }
1021
1022 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1023 struct nlattr *tb)
1024 {
1025 struct ieee80211_channel *chan;
1026
1027 if (tb == NULL)
1028 return NULL;
1029 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1030 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1031 return NULL;
1032 return chan;
1033 }
1034
1035 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1036 {
1037 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1038 int i;
1039
1040 if (!nl_modes)
1041 goto nla_put_failure;
1042
1043 i = 0;
1044 while (ifmodes) {
1045 if ((ifmodes & 1) && nla_put_flag(msg, i))
1046 goto nla_put_failure;
1047 ifmodes >>= 1;
1048 i++;
1049 }
1050
1051 nla_nest_end(msg, nl_modes);
1052 return 0;
1053
1054 nla_put_failure:
1055 return -ENOBUFS;
1056 }
1057
1058 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1059 struct sk_buff *msg,
1060 bool large)
1061 {
1062 struct nlattr *nl_combis;
1063 int i, j;
1064
1065 nl_combis = nla_nest_start(msg,
1066 NL80211_ATTR_INTERFACE_COMBINATIONS);
1067 if (!nl_combis)
1068 goto nla_put_failure;
1069
1070 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1071 const struct ieee80211_iface_combination *c;
1072 struct nlattr *nl_combi, *nl_limits;
1073
1074 c = &wiphy->iface_combinations[i];
1075
1076 nl_combi = nla_nest_start(msg, i + 1);
1077 if (!nl_combi)
1078 goto nla_put_failure;
1079
1080 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1081 if (!nl_limits)
1082 goto nla_put_failure;
1083
1084 for (j = 0; j < c->n_limits; j++) {
1085 struct nlattr *nl_limit;
1086
1087 nl_limit = nla_nest_start(msg, j + 1);
1088 if (!nl_limit)
1089 goto nla_put_failure;
1090 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1091 c->limits[j].max))
1092 goto nla_put_failure;
1093 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1094 c->limits[j].types))
1095 goto nla_put_failure;
1096 nla_nest_end(msg, nl_limit);
1097 }
1098
1099 nla_nest_end(msg, nl_limits);
1100
1101 if (c->beacon_int_infra_match &&
1102 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1103 goto nla_put_failure;
1104 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1105 c->num_different_channels) ||
1106 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1107 c->max_interfaces))
1108 goto nla_put_failure;
1109 if (large &&
1110 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1111 c->radar_detect_widths) ||
1112 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1113 c->radar_detect_regions)))
1114 goto nla_put_failure;
1115 if (c->beacon_int_min_gcd &&
1116 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1117 c->beacon_int_min_gcd))
1118 goto nla_put_failure;
1119
1120 nla_nest_end(msg, nl_combi);
1121 }
1122
1123 nla_nest_end(msg, nl_combis);
1124
1125 return 0;
1126 nla_put_failure:
1127 return -ENOBUFS;
1128 }
1129
1130 #ifdef CONFIG_PM
1131 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1132 struct sk_buff *msg)
1133 {
1134 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1135 struct nlattr *nl_tcp;
1136
1137 if (!tcp)
1138 return 0;
1139
1140 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1141 if (!nl_tcp)
1142 return -ENOBUFS;
1143
1144 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1145 tcp->data_payload_max))
1146 return -ENOBUFS;
1147
1148 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1149 tcp->data_payload_max))
1150 return -ENOBUFS;
1151
1152 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1153 return -ENOBUFS;
1154
1155 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1156 sizeof(*tcp->tok), tcp->tok))
1157 return -ENOBUFS;
1158
1159 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1160 tcp->data_interval_max))
1161 return -ENOBUFS;
1162
1163 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1164 tcp->wake_payload_max))
1165 return -ENOBUFS;
1166
1167 nla_nest_end(msg, nl_tcp);
1168 return 0;
1169 }
1170
1171 static int nl80211_send_wowlan(struct sk_buff *msg,
1172 struct cfg80211_registered_device *rdev,
1173 bool large)
1174 {
1175 struct nlattr *nl_wowlan;
1176
1177 if (!rdev->wiphy.wowlan)
1178 return 0;
1179
1180 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1181 if (!nl_wowlan)
1182 return -ENOBUFS;
1183
1184 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1185 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1186 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1187 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1188 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1189 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1190 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1191 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1192 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1193 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1194 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1195 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1196 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1197 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1198 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1199 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1200 return -ENOBUFS;
1201
1202 if (rdev->wiphy.wowlan->n_patterns) {
1203 struct nl80211_pattern_support pat = {
1204 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1205 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1206 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1207 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1208 };
1209
1210 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1211 sizeof(pat), &pat))
1212 return -ENOBUFS;
1213 }
1214
1215 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1216 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1217 rdev->wiphy.wowlan->max_nd_match_sets))
1218 return -ENOBUFS;
1219
1220 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1221 return -ENOBUFS;
1222
1223 nla_nest_end(msg, nl_wowlan);
1224
1225 return 0;
1226 }
1227 #endif
1228
1229 static int nl80211_send_coalesce(struct sk_buff *msg,
1230 struct cfg80211_registered_device *rdev)
1231 {
1232 struct nl80211_coalesce_rule_support rule;
1233
1234 if (!rdev->wiphy.coalesce)
1235 return 0;
1236
1237 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1238 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1239 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1240 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1241 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1242 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1243
1244 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1245 return -ENOBUFS;
1246
1247 return 0;
1248 }
1249
1250 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1251 struct ieee80211_supported_band *sband)
1252 {
1253 struct nlattr *nl_rates, *nl_rate;
1254 struct ieee80211_rate *rate;
1255 int i;
1256
1257 /* add HT info */
1258 if (sband->ht_cap.ht_supported &&
1259 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1260 sizeof(sband->ht_cap.mcs),
1261 &sband->ht_cap.mcs) ||
1262 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1263 sband->ht_cap.cap) ||
1264 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1265 sband->ht_cap.ampdu_factor) ||
1266 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1267 sband->ht_cap.ampdu_density)))
1268 return -ENOBUFS;
1269
1270 /* add VHT info */
1271 if (sband->vht_cap.vht_supported &&
1272 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1273 sizeof(sband->vht_cap.vht_mcs),
1274 &sband->vht_cap.vht_mcs) ||
1275 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1276 sband->vht_cap.cap)))
1277 return -ENOBUFS;
1278
1279 /* add bitrates */
1280 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1281 if (!nl_rates)
1282 return -ENOBUFS;
1283
1284 for (i = 0; i < sband->n_bitrates; i++) {
1285 nl_rate = nla_nest_start(msg, i);
1286 if (!nl_rate)
1287 return -ENOBUFS;
1288
1289 rate = &sband->bitrates[i];
1290 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1291 rate->bitrate))
1292 return -ENOBUFS;
1293 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1294 nla_put_flag(msg,
1295 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1296 return -ENOBUFS;
1297
1298 nla_nest_end(msg, nl_rate);
1299 }
1300
1301 nla_nest_end(msg, nl_rates);
1302
1303 return 0;
1304 }
1305
1306 static int
1307 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1308 const struct ieee80211_txrx_stypes *mgmt_stypes)
1309 {
1310 u16 stypes;
1311 struct nlattr *nl_ftypes, *nl_ifs;
1312 enum nl80211_iftype ift;
1313 int i;
1314
1315 if (!mgmt_stypes)
1316 return 0;
1317
1318 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1319 if (!nl_ifs)
1320 return -ENOBUFS;
1321
1322 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1323 nl_ftypes = nla_nest_start(msg, ift);
1324 if (!nl_ftypes)
1325 return -ENOBUFS;
1326 i = 0;
1327 stypes = mgmt_stypes[ift].tx;
1328 while (stypes) {
1329 if ((stypes & 1) &&
1330 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1331 (i << 4) | IEEE80211_FTYPE_MGMT))
1332 return -ENOBUFS;
1333 stypes >>= 1;
1334 i++;
1335 }
1336 nla_nest_end(msg, nl_ftypes);
1337 }
1338
1339 nla_nest_end(msg, nl_ifs);
1340
1341 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1342 if (!nl_ifs)
1343 return -ENOBUFS;
1344
1345 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1346 nl_ftypes = nla_nest_start(msg, ift);
1347 if (!nl_ftypes)
1348 return -ENOBUFS;
1349 i = 0;
1350 stypes = mgmt_stypes[ift].rx;
1351 while (stypes) {
1352 if ((stypes & 1) &&
1353 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1354 (i << 4) | IEEE80211_FTYPE_MGMT))
1355 return -ENOBUFS;
1356 stypes >>= 1;
1357 i++;
1358 }
1359 nla_nest_end(msg, nl_ftypes);
1360 }
1361 nla_nest_end(msg, nl_ifs);
1362
1363 return 0;
1364 }
1365
1366 #define CMD(op, n) \
1367 do { \
1368 if (rdev->ops->op) { \
1369 i++; \
1370 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1371 goto nla_put_failure; \
1372 } \
1373 } while (0)
1374
1375 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1376 struct sk_buff *msg)
1377 {
1378 int i = 0;
1379
1380 /*
1381 * do *NOT* add anything into this function, new things need to be
1382 * advertised only to new versions of userspace that can deal with
1383 * the split (and they can't possibly care about new features...
1384 */
1385 CMD(add_virtual_intf, NEW_INTERFACE);
1386 CMD(change_virtual_intf, SET_INTERFACE);
1387 CMD(add_key, NEW_KEY);
1388 CMD(start_ap, START_AP);
1389 CMD(add_station, NEW_STATION);
1390 CMD(add_mpath, NEW_MPATH);
1391 CMD(update_mesh_config, SET_MESH_CONFIG);
1392 CMD(change_bss, SET_BSS);
1393 CMD(auth, AUTHENTICATE);
1394 CMD(assoc, ASSOCIATE);
1395 CMD(deauth, DEAUTHENTICATE);
1396 CMD(disassoc, DISASSOCIATE);
1397 CMD(join_ibss, JOIN_IBSS);
1398 CMD(join_mesh, JOIN_MESH);
1399 CMD(set_pmksa, SET_PMKSA);
1400 CMD(del_pmksa, DEL_PMKSA);
1401 CMD(flush_pmksa, FLUSH_PMKSA);
1402 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1403 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1404 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1405 CMD(mgmt_tx, FRAME);
1406 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1407 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1408 i++;
1409 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1410 goto nla_put_failure;
1411 }
1412 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1413 rdev->ops->join_mesh) {
1414 i++;
1415 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1416 goto nla_put_failure;
1417 }
1418 CMD(set_wds_peer, SET_WDS_PEER);
1419 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1420 CMD(tdls_mgmt, TDLS_MGMT);
1421 CMD(tdls_oper, TDLS_OPER);
1422 }
1423 if (rdev->wiphy.max_sched_scan_reqs)
1424 CMD(sched_scan_start, START_SCHED_SCAN);
1425 CMD(probe_client, PROBE_CLIENT);
1426 CMD(set_noack_map, SET_NOACK_MAP);
1427 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1428 i++;
1429 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1430 goto nla_put_failure;
1431 }
1432 CMD(start_p2p_device, START_P2P_DEVICE);
1433 CMD(set_mcast_rate, SET_MCAST_RATE);
1434 #ifdef CONFIG_NL80211_TESTMODE
1435 CMD(testmode_cmd, TESTMODE);
1436 #endif
1437
1438 if (rdev->ops->connect || rdev->ops->auth) {
1439 i++;
1440 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1441 goto nla_put_failure;
1442 }
1443
1444 if (rdev->ops->disconnect || rdev->ops->deauth) {
1445 i++;
1446 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1447 goto nla_put_failure;
1448 }
1449
1450 return i;
1451 nla_put_failure:
1452 return -ENOBUFS;
1453 }
1454
1455 struct nl80211_dump_wiphy_state {
1456 s64 filter_wiphy;
1457 long start;
1458 long split_start, band_start, chan_start, capa_start;
1459 bool split;
1460 };
1461
1462 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1463 enum nl80211_commands cmd,
1464 struct sk_buff *msg, u32 portid, u32 seq,
1465 int flags, struct nl80211_dump_wiphy_state *state)
1466 {
1467 void *hdr;
1468 struct nlattr *nl_bands, *nl_band;
1469 struct nlattr *nl_freqs, *nl_freq;
1470 struct nlattr *nl_cmds;
1471 enum nl80211_band band;
1472 struct ieee80211_channel *chan;
1473 int i;
1474 const struct ieee80211_txrx_stypes *mgmt_stypes =
1475 rdev->wiphy.mgmt_stypes;
1476 u32 features;
1477
1478 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1479 if (!hdr)
1480 return -ENOBUFS;
1481
1482 if (WARN_ON(!state))
1483 return -EINVAL;
1484
1485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1486 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1487 wiphy_name(&rdev->wiphy)) ||
1488 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1489 cfg80211_rdev_list_generation))
1490 goto nla_put_failure;
1491
1492 if (cmd != NL80211_CMD_NEW_WIPHY)
1493 goto finish;
1494
1495 switch (state->split_start) {
1496 case 0:
1497 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1498 rdev->wiphy.retry_short) ||
1499 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1500 rdev->wiphy.retry_long) ||
1501 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1502 rdev->wiphy.frag_threshold) ||
1503 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1504 rdev->wiphy.rts_threshold) ||
1505 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1506 rdev->wiphy.coverage_class) ||
1507 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1508 rdev->wiphy.max_scan_ssids) ||
1509 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1510 rdev->wiphy.max_sched_scan_ssids) ||
1511 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1512 rdev->wiphy.max_scan_ie_len) ||
1513 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1514 rdev->wiphy.max_sched_scan_ie_len) ||
1515 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1516 rdev->wiphy.max_match_sets) ||
1517 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1518 rdev->wiphy.max_sched_scan_plans) ||
1519 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1520 rdev->wiphy.max_sched_scan_plan_interval) ||
1521 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1522 rdev->wiphy.max_sched_scan_plan_iterations))
1523 goto nla_put_failure;
1524
1525 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1526 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1527 goto nla_put_failure;
1528 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1529 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1530 goto nla_put_failure;
1531 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1532 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1533 goto nla_put_failure;
1534 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1535 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1536 goto nla_put_failure;
1537 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1538 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1539 goto nla_put_failure;
1540 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1541 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1542 goto nla_put_failure;
1543 state->split_start++;
1544 if (state->split)
1545 break;
1546 case 1:
1547 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1548 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1549 rdev->wiphy.cipher_suites))
1550 goto nla_put_failure;
1551
1552 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1553 rdev->wiphy.max_num_pmkids))
1554 goto nla_put_failure;
1555
1556 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1557 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1558 goto nla_put_failure;
1559
1560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1561 rdev->wiphy.available_antennas_tx) ||
1562 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1563 rdev->wiphy.available_antennas_rx))
1564 goto nla_put_failure;
1565
1566 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1567 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1568 rdev->wiphy.probe_resp_offload))
1569 goto nla_put_failure;
1570
1571 if ((rdev->wiphy.available_antennas_tx ||
1572 rdev->wiphy.available_antennas_rx) &&
1573 rdev->ops->get_antenna) {
1574 u32 tx_ant = 0, rx_ant = 0;
1575 int res;
1576
1577 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1578 if (!res) {
1579 if (nla_put_u32(msg,
1580 NL80211_ATTR_WIPHY_ANTENNA_TX,
1581 tx_ant) ||
1582 nla_put_u32(msg,
1583 NL80211_ATTR_WIPHY_ANTENNA_RX,
1584 rx_ant))
1585 goto nla_put_failure;
1586 }
1587 }
1588
1589 state->split_start++;
1590 if (state->split)
1591 break;
1592 case 2:
1593 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1594 rdev->wiphy.interface_modes))
1595 goto nla_put_failure;
1596 state->split_start++;
1597 if (state->split)
1598 break;
1599 case 3:
1600 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1601 if (!nl_bands)
1602 goto nla_put_failure;
1603
1604 for (band = state->band_start;
1605 band < NUM_NL80211_BANDS; band++) {
1606 struct ieee80211_supported_band *sband;
1607
1608 sband = rdev->wiphy.bands[band];
1609
1610 if (!sband)
1611 continue;
1612
1613 nl_band = nla_nest_start(msg, band);
1614 if (!nl_band)
1615 goto nla_put_failure;
1616
1617 switch (state->chan_start) {
1618 case 0:
1619 if (nl80211_send_band_rateinfo(msg, sband))
1620 goto nla_put_failure;
1621 state->chan_start++;
1622 if (state->split)
1623 break;
1624 default:
1625 /* add frequencies */
1626 nl_freqs = nla_nest_start(
1627 msg, NL80211_BAND_ATTR_FREQS);
1628 if (!nl_freqs)
1629 goto nla_put_failure;
1630
1631 for (i = state->chan_start - 1;
1632 i < sband->n_channels;
1633 i++) {
1634 nl_freq = nla_nest_start(msg, i);
1635 if (!nl_freq)
1636 goto nla_put_failure;
1637
1638 chan = &sband->channels[i];
1639
1640 if (nl80211_msg_put_channel(
1641 msg, chan,
1642 state->split))
1643 goto nla_put_failure;
1644
1645 nla_nest_end(msg, nl_freq);
1646 if (state->split)
1647 break;
1648 }
1649 if (i < sband->n_channels)
1650 state->chan_start = i + 2;
1651 else
1652 state->chan_start = 0;
1653 nla_nest_end(msg, nl_freqs);
1654 }
1655
1656 nla_nest_end(msg, nl_band);
1657
1658 if (state->split) {
1659 /* start again here */
1660 if (state->chan_start)
1661 band--;
1662 break;
1663 }
1664 }
1665 nla_nest_end(msg, nl_bands);
1666
1667 if (band < NUM_NL80211_BANDS)
1668 state->band_start = band + 1;
1669 else
1670 state->band_start = 0;
1671
1672 /* if bands & channels are done, continue outside */
1673 if (state->band_start == 0 && state->chan_start == 0)
1674 state->split_start++;
1675 if (state->split)
1676 break;
1677 case 4:
1678 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1679 if (!nl_cmds)
1680 goto nla_put_failure;
1681
1682 i = nl80211_add_commands_unsplit(rdev, msg);
1683 if (i < 0)
1684 goto nla_put_failure;
1685 if (state->split) {
1686 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1687 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1688 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1689 CMD(channel_switch, CHANNEL_SWITCH);
1690 CMD(set_qos_map, SET_QOS_MAP);
1691 if (rdev->wiphy.features &
1692 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1693 CMD(add_tx_ts, ADD_TX_TS);
1694 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1695 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1696 }
1697 #undef CMD
1698
1699 nla_nest_end(msg, nl_cmds);
1700 state->split_start++;
1701 if (state->split)
1702 break;
1703 case 5:
1704 if (rdev->ops->remain_on_channel &&
1705 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1706 nla_put_u32(msg,
1707 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1708 rdev->wiphy.max_remain_on_channel_duration))
1709 goto nla_put_failure;
1710
1711 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1712 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1713 goto nla_put_failure;
1714
1715 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1716 goto nla_put_failure;
1717 state->split_start++;
1718 if (state->split)
1719 break;
1720 case 6:
1721 #ifdef CONFIG_PM
1722 if (nl80211_send_wowlan(msg, rdev, state->split))
1723 goto nla_put_failure;
1724 state->split_start++;
1725 if (state->split)
1726 break;
1727 #else
1728 state->split_start++;
1729 #endif
1730 case 7:
1731 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1732 rdev->wiphy.software_iftypes))
1733 goto nla_put_failure;
1734
1735 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1736 state->split))
1737 goto nla_put_failure;
1738
1739 state->split_start++;
1740 if (state->split)
1741 break;
1742 case 8:
1743 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1744 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1745 rdev->wiphy.ap_sme_capa))
1746 goto nla_put_failure;
1747
1748 features = rdev->wiphy.features;
1749 /*
1750 * We can only add the per-channel limit information if the
1751 * dump is split, otherwise it makes it too big. Therefore
1752 * only advertise it in that case.
1753 */
1754 if (state->split)
1755 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1756 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1757 goto nla_put_failure;
1758
1759 if (rdev->wiphy.ht_capa_mod_mask &&
1760 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1761 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1762 rdev->wiphy.ht_capa_mod_mask))
1763 goto nla_put_failure;
1764
1765 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1766 rdev->wiphy.max_acl_mac_addrs &&
1767 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1768 rdev->wiphy.max_acl_mac_addrs))
1769 goto nla_put_failure;
1770
1771 /*
1772 * Any information below this point is only available to
1773 * applications that can deal with it being split. This
1774 * helps ensure that newly added capabilities don't break
1775 * older tools by overrunning their buffers.
1776 *
1777 * We still increment split_start so that in the split
1778 * case we'll continue with more data in the next round,
1779 * but break unconditionally so unsplit data stops here.
1780 */
1781 state->split_start++;
1782 break;
1783 case 9:
1784 if (rdev->wiphy.extended_capabilities &&
1785 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1786 rdev->wiphy.extended_capabilities_len,
1787 rdev->wiphy.extended_capabilities) ||
1788 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1789 rdev->wiphy.extended_capabilities_len,
1790 rdev->wiphy.extended_capabilities_mask)))
1791 goto nla_put_failure;
1792
1793 if (rdev->wiphy.vht_capa_mod_mask &&
1794 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1795 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1796 rdev->wiphy.vht_capa_mod_mask))
1797 goto nla_put_failure;
1798
1799 state->split_start++;
1800 break;
1801 case 10:
1802 if (nl80211_send_coalesce(msg, rdev))
1803 goto nla_put_failure;
1804
1805 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1806 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1807 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1808 goto nla_put_failure;
1809
1810 if (rdev->wiphy.max_ap_assoc_sta &&
1811 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1812 rdev->wiphy.max_ap_assoc_sta))
1813 goto nla_put_failure;
1814
1815 state->split_start++;
1816 break;
1817 case 11:
1818 if (rdev->wiphy.n_vendor_commands) {
1819 const struct nl80211_vendor_cmd_info *info;
1820 struct nlattr *nested;
1821
1822 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1823 if (!nested)
1824 goto nla_put_failure;
1825
1826 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1827 info = &rdev->wiphy.vendor_commands[i].info;
1828 if (nla_put(msg, i + 1, sizeof(*info), info))
1829 goto nla_put_failure;
1830 }
1831 nla_nest_end(msg, nested);
1832 }
1833
1834 if (rdev->wiphy.n_vendor_events) {
1835 const struct nl80211_vendor_cmd_info *info;
1836 struct nlattr *nested;
1837
1838 nested = nla_nest_start(msg,
1839 NL80211_ATTR_VENDOR_EVENTS);
1840 if (!nested)
1841 goto nla_put_failure;
1842
1843 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1844 info = &rdev->wiphy.vendor_events[i];
1845 if (nla_put(msg, i + 1, sizeof(*info), info))
1846 goto nla_put_failure;
1847 }
1848 nla_nest_end(msg, nested);
1849 }
1850 state->split_start++;
1851 break;
1852 case 12:
1853 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1854 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1855 rdev->wiphy.max_num_csa_counters))
1856 goto nla_put_failure;
1857
1858 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1859 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1860 goto nla_put_failure;
1861
1862 if (rdev->wiphy.max_sched_scan_reqs &&
1863 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1864 rdev->wiphy.max_sched_scan_reqs))
1865 goto nla_put_failure;
1866
1867 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1868 sizeof(rdev->wiphy.ext_features),
1869 rdev->wiphy.ext_features))
1870 goto nla_put_failure;
1871
1872 if (rdev->wiphy.bss_select_support) {
1873 struct nlattr *nested;
1874 u32 bss_select_support = rdev->wiphy.bss_select_support;
1875
1876 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1877 if (!nested)
1878 goto nla_put_failure;
1879
1880 i = 0;
1881 while (bss_select_support) {
1882 if ((bss_select_support & 1) &&
1883 nla_put_flag(msg, i))
1884 goto nla_put_failure;
1885 i++;
1886 bss_select_support >>= 1;
1887 }
1888 nla_nest_end(msg, nested);
1889 }
1890
1891 state->split_start++;
1892 break;
1893 case 13:
1894 if (rdev->wiphy.num_iftype_ext_capab &&
1895 rdev->wiphy.iftype_ext_capab) {
1896 struct nlattr *nested_ext_capab, *nested;
1897
1898 nested = nla_nest_start(msg,
1899 NL80211_ATTR_IFTYPE_EXT_CAPA);
1900 if (!nested)
1901 goto nla_put_failure;
1902
1903 for (i = state->capa_start;
1904 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1905 const struct wiphy_iftype_ext_capab *capab;
1906
1907 capab = &rdev->wiphy.iftype_ext_capab[i];
1908
1909 nested_ext_capab = nla_nest_start(msg, i);
1910 if (!nested_ext_capab ||
1911 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1912 capab->iftype) ||
1913 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1914 capab->extended_capabilities_len,
1915 capab->extended_capabilities) ||
1916 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1917 capab->extended_capabilities_len,
1918 capab->extended_capabilities_mask))
1919 goto nla_put_failure;
1920
1921 nla_nest_end(msg, nested_ext_capab);
1922 if (state->split)
1923 break;
1924 }
1925 nla_nest_end(msg, nested);
1926 if (i < rdev->wiphy.num_iftype_ext_capab) {
1927 state->capa_start = i + 1;
1928 break;
1929 }
1930 }
1931
1932 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1933 rdev->wiphy.nan_supported_bands))
1934 goto nla_put_failure;
1935
1936 /* done */
1937 state->split_start = 0;
1938 break;
1939 }
1940 finish:
1941 genlmsg_end(msg, hdr);
1942 return 0;
1943
1944 nla_put_failure:
1945 genlmsg_cancel(msg, hdr);
1946 return -EMSGSIZE;
1947 }
1948
1949 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1950 struct netlink_callback *cb,
1951 struct nl80211_dump_wiphy_state *state)
1952 {
1953 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1954 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1955 nl80211_fam.maxattr, nl80211_policy, NULL);
1956 /* ignore parse errors for backward compatibility */
1957 if (ret)
1958 return 0;
1959
1960 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1961 if (tb[NL80211_ATTR_WIPHY])
1962 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1963 if (tb[NL80211_ATTR_WDEV])
1964 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1965 if (tb[NL80211_ATTR_IFINDEX]) {
1966 struct net_device *netdev;
1967 struct cfg80211_registered_device *rdev;
1968 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1969
1970 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1971 if (!netdev)
1972 return -ENODEV;
1973 if (netdev->ieee80211_ptr) {
1974 rdev = wiphy_to_rdev(
1975 netdev->ieee80211_ptr->wiphy);
1976 state->filter_wiphy = rdev->wiphy_idx;
1977 }
1978 }
1979
1980 return 0;
1981 }
1982
1983 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1984 {
1985 int idx = 0, ret;
1986 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1987 struct cfg80211_registered_device *rdev;
1988
1989 rtnl_lock();
1990 if (!state) {
1991 state = kzalloc(sizeof(*state), GFP_KERNEL);
1992 if (!state) {
1993 rtnl_unlock();
1994 return -ENOMEM;
1995 }
1996 state->filter_wiphy = -1;
1997 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1998 if (ret) {
1999 kfree(state);
2000 rtnl_unlock();
2001 return ret;
2002 }
2003 cb->args[0] = (long)state;
2004 }
2005
2006 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2007 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2008 continue;
2009 if (++idx <= state->start)
2010 continue;
2011 if (state->filter_wiphy != -1 &&
2012 state->filter_wiphy != rdev->wiphy_idx)
2013 continue;
2014 /* attempt to fit multiple wiphy data chunks into the skb */
2015 do {
2016 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2017 skb,
2018 NETLINK_CB(cb->skb).portid,
2019 cb->nlh->nlmsg_seq,
2020 NLM_F_MULTI, state);
2021 if (ret < 0) {
2022 /*
2023 * If sending the wiphy data didn't fit (ENOBUFS
2024 * or EMSGSIZE returned), this SKB is still
2025 * empty (so it's not too big because another
2026 * wiphy dataset is already in the skb) and
2027 * we've not tried to adjust the dump allocation
2028 * yet ... then adjust the alloc size to be
2029 * bigger, and return 1 but with the empty skb.
2030 * This results in an empty message being RX'ed
2031 * in userspace, but that is ignored.
2032 *
2033 * We can then retry with the larger buffer.
2034 */
2035 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2036 !skb->len && !state->split &&
2037 cb->min_dump_alloc < 4096) {
2038 cb->min_dump_alloc = 4096;
2039 state->split_start = 0;
2040 rtnl_unlock();
2041 return 1;
2042 }
2043 idx--;
2044 break;
2045 }
2046 } while (state->split_start > 0);
2047 break;
2048 }
2049 rtnl_unlock();
2050
2051 state->start = idx;
2052
2053 return skb->len;
2054 }
2055
2056 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2057 {
2058 kfree((void *)cb->args[0]);
2059 return 0;
2060 }
2061
2062 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2063 {
2064 struct sk_buff *msg;
2065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2066 struct nl80211_dump_wiphy_state state = {};
2067
2068 msg = nlmsg_new(4096, GFP_KERNEL);
2069 if (!msg)
2070 return -ENOMEM;
2071
2072 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2073 info->snd_portid, info->snd_seq, 0,
2074 &state) < 0) {
2075 nlmsg_free(msg);
2076 return -ENOBUFS;
2077 }
2078
2079 return genlmsg_reply(msg, info);
2080 }
2081
2082 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2083 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2084 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2085 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2086 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2087 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2088 };
2089
2090 static int parse_txq_params(struct nlattr *tb[],
2091 struct ieee80211_txq_params *txq_params)
2092 {
2093 u8 ac;
2094
2095 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2096 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2097 !tb[NL80211_TXQ_ATTR_AIFS])
2098 return -EINVAL;
2099
2100 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2101 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2102 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2103 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2104 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2105
2106 if (ac >= NL80211_NUM_ACS)
2107 return -EINVAL;
2108 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2109 return 0;
2110 }
2111
2112 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2113 {
2114 /*
2115 * You can only set the channel explicitly for WDS interfaces,
2116 * all others have their channel managed via their respective
2117 * "establish a connection" command (connect, join, ...)
2118 *
2119 * For AP/GO and mesh mode, the channel can be set with the
2120 * channel userspace API, but is only stored and passed to the
2121 * low-level driver when the AP starts or the mesh is joined.
2122 * This is for backward compatibility, userspace can also give
2123 * the channel in the start-ap or join-mesh commands instead.
2124 *
2125 * Monitors are special as they are normally slaved to
2126 * whatever else is going on, so they have their own special
2127 * operation to set the monitor channel if possible.
2128 */
2129 return !wdev ||
2130 wdev->iftype == NL80211_IFTYPE_AP ||
2131 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2132 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2133 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2134 }
2135
2136 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2137 struct genl_info *info,
2138 struct cfg80211_chan_def *chandef)
2139 {
2140 u32 control_freq;
2141
2142 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2143 return -EINVAL;
2144
2145 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2146
2147 memset(chandef, 0, sizeof(*chandef));
2148
2149 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2150 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2151 chandef->center_freq1 = control_freq;
2152 chandef->center_freq2 = 0;
2153
2154 /* Primary channel not allowed */
2155 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2156 return -EINVAL;
2157
2158 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2159 enum nl80211_channel_type chantype;
2160
2161 chantype = nla_get_u32(
2162 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2163
2164 switch (chantype) {
2165 case NL80211_CHAN_NO_HT:
2166 case NL80211_CHAN_HT20:
2167 case NL80211_CHAN_HT40PLUS:
2168 case NL80211_CHAN_HT40MINUS:
2169 cfg80211_chandef_create(chandef, chandef->chan,
2170 chantype);
2171 /* user input for center_freq is incorrect */
2172 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2173 chandef->center_freq1 != nla_get_u32(
2174 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2175 return -EINVAL;
2176 /* center_freq2 must be zero */
2177 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2178 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2179 return -EINVAL;
2180 break;
2181 default:
2182 return -EINVAL;
2183 }
2184 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2185 chandef->width =
2186 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2187 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2188 chandef->center_freq1 =
2189 nla_get_u32(
2190 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2191 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2192 chandef->center_freq2 =
2193 nla_get_u32(
2194 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2195 }
2196
2197 if (!cfg80211_chandef_valid(chandef))
2198 return -EINVAL;
2199
2200 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2201 IEEE80211_CHAN_DISABLED))
2202 return -EINVAL;
2203
2204 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2205 chandef->width == NL80211_CHAN_WIDTH_10) &&
2206 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2207 return -EINVAL;
2208
2209 return 0;
2210 }
2211
2212 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2213 struct net_device *dev,
2214 struct genl_info *info)
2215 {
2216 struct cfg80211_chan_def chandef;
2217 int result;
2218 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2219 struct wireless_dev *wdev = NULL;
2220
2221 if (dev)
2222 wdev = dev->ieee80211_ptr;
2223 if (!nl80211_can_set_dev_channel(wdev))
2224 return -EOPNOTSUPP;
2225 if (wdev)
2226 iftype = wdev->iftype;
2227
2228 result = nl80211_parse_chandef(rdev, info, &chandef);
2229 if (result)
2230 return result;
2231
2232 switch (iftype) {
2233 case NL80211_IFTYPE_AP:
2234 case NL80211_IFTYPE_P2P_GO:
2235 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2236 iftype)) {
2237 result = -EINVAL;
2238 break;
2239 }
2240 if (wdev->beacon_interval) {
2241 if (!dev || !rdev->ops->set_ap_chanwidth ||
2242 !(rdev->wiphy.features &
2243 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2244 result = -EBUSY;
2245 break;
2246 }
2247
2248 /* Only allow dynamic channel width changes */
2249 if (chandef.chan != wdev->preset_chandef.chan) {
2250 result = -EBUSY;
2251 break;
2252 }
2253 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2254 if (result)
2255 break;
2256 }
2257 wdev->preset_chandef = chandef;
2258 result = 0;
2259 break;
2260 case NL80211_IFTYPE_MESH_POINT:
2261 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2262 break;
2263 case NL80211_IFTYPE_MONITOR:
2264 result = cfg80211_set_monitor_channel(rdev, &chandef);
2265 break;
2266 default:
2267 result = -EINVAL;
2268 }
2269
2270 return result;
2271 }
2272
2273 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2274 {
2275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2276 struct net_device *netdev = info->user_ptr[1];
2277
2278 return __nl80211_set_channel(rdev, netdev, info);
2279 }
2280
2281 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2282 {
2283 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2284 struct net_device *dev = info->user_ptr[1];
2285 struct wireless_dev *wdev = dev->ieee80211_ptr;
2286 const u8 *bssid;
2287
2288 if (!info->attrs[NL80211_ATTR_MAC])
2289 return -EINVAL;
2290
2291 if (netif_running(dev))
2292 return -EBUSY;
2293
2294 if (!rdev->ops->set_wds_peer)
2295 return -EOPNOTSUPP;
2296
2297 if (wdev->iftype != NL80211_IFTYPE_WDS)
2298 return -EOPNOTSUPP;
2299
2300 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2301 return rdev_set_wds_peer(rdev, dev, bssid);
2302 }
2303
2304 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2305 {
2306 struct cfg80211_registered_device *rdev;
2307 struct net_device *netdev = NULL;
2308 struct wireless_dev *wdev;
2309 int result = 0, rem_txq_params = 0;
2310 struct nlattr *nl_txq_params;
2311 u32 changed;
2312 u8 retry_short = 0, retry_long = 0;
2313 u32 frag_threshold = 0, rts_threshold = 0;
2314 u8 coverage_class = 0;
2315
2316 ASSERT_RTNL();
2317
2318 /*
2319 * Try to find the wiphy and netdev. Normally this
2320 * function shouldn't need the netdev, but this is
2321 * done for backward compatibility -- previously
2322 * setting the channel was done per wiphy, but now
2323 * it is per netdev. Previous userland like hostapd
2324 * also passed a netdev to set_wiphy, so that it is
2325 * possible to let that go to the right netdev!
2326 */
2327
2328 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2329 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2330
2331 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2332 if (netdev && netdev->ieee80211_ptr)
2333 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2334 else
2335 netdev = NULL;
2336 }
2337
2338 if (!netdev) {
2339 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2340 info->attrs);
2341 if (IS_ERR(rdev))
2342 return PTR_ERR(rdev);
2343 wdev = NULL;
2344 netdev = NULL;
2345 result = 0;
2346 } else
2347 wdev = netdev->ieee80211_ptr;
2348
2349 /*
2350 * end workaround code, by now the rdev is available
2351 * and locked, and wdev may or may not be NULL.
2352 */
2353
2354 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2355 result = cfg80211_dev_rename(
2356 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2357
2358 if (result)
2359 return result;
2360
2361 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2362 struct ieee80211_txq_params txq_params;
2363 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2364
2365 if (!rdev->ops->set_txq_params)
2366 return -EOPNOTSUPP;
2367
2368 if (!netdev)
2369 return -EINVAL;
2370
2371 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2372 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2373 return -EINVAL;
2374
2375 if (!netif_running(netdev))
2376 return -ENETDOWN;
2377
2378 nla_for_each_nested(nl_txq_params,
2379 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2380 rem_txq_params) {
2381 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2382 nl_txq_params,
2383 txq_params_policy,
2384 info->extack);
2385 if (result)
2386 return result;
2387 result = parse_txq_params(tb, &txq_params);
2388 if (result)
2389 return result;
2390
2391 result = rdev_set_txq_params(rdev, netdev,
2392 &txq_params);
2393 if (result)
2394 return result;
2395 }
2396 }
2397
2398 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2399 result = __nl80211_set_channel(
2400 rdev,
2401 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2402 info);
2403 if (result)
2404 return result;
2405 }
2406
2407 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2408 struct wireless_dev *txp_wdev = wdev;
2409 enum nl80211_tx_power_setting type;
2410 int idx, mbm = 0;
2411
2412 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2413 txp_wdev = NULL;
2414
2415 if (!rdev->ops->set_tx_power)
2416 return -EOPNOTSUPP;
2417
2418 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2419 type = nla_get_u32(info->attrs[idx]);
2420
2421 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2422 (type != NL80211_TX_POWER_AUTOMATIC))
2423 return -EINVAL;
2424
2425 if (type != NL80211_TX_POWER_AUTOMATIC) {
2426 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2427 mbm = nla_get_u32(info->attrs[idx]);
2428 }
2429
2430 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2431 if (result)
2432 return result;
2433 }
2434
2435 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2436 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2437 u32 tx_ant, rx_ant;
2438
2439 if ((!rdev->wiphy.available_antennas_tx &&
2440 !rdev->wiphy.available_antennas_rx) ||
2441 !rdev->ops->set_antenna)
2442 return -EOPNOTSUPP;
2443
2444 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2445 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2446
2447 /* reject antenna configurations which don't match the
2448 * available antenna masks, except for the "all" mask */
2449 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2450 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2451 return -EINVAL;
2452
2453 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2454 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2455
2456 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2457 if (result)
2458 return result;
2459 }
2460
2461 changed = 0;
2462
2463 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2464 retry_short = nla_get_u8(
2465 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2466 if (retry_short == 0)
2467 return -EINVAL;
2468
2469 changed |= WIPHY_PARAM_RETRY_SHORT;
2470 }
2471
2472 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2473 retry_long = nla_get_u8(
2474 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2475 if (retry_long == 0)
2476 return -EINVAL;
2477
2478 changed |= WIPHY_PARAM_RETRY_LONG;
2479 }
2480
2481 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2482 frag_threshold = nla_get_u32(
2483 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2484 if (frag_threshold < 256)
2485 return -EINVAL;
2486
2487 if (frag_threshold != (u32) -1) {
2488 /*
2489 * Fragments (apart from the last one) are required to
2490 * have even length. Make the fragmentation code
2491 * simpler by stripping LSB should someone try to use
2492 * odd threshold value.
2493 */
2494 frag_threshold &= ~0x1;
2495 }
2496 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2497 }
2498
2499 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2500 rts_threshold = nla_get_u32(
2501 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2502 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2506 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2507 return -EINVAL;
2508
2509 coverage_class = nla_get_u8(
2510 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2511 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2512 }
2513
2514 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2515 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2516 return -EOPNOTSUPP;
2517
2518 changed |= WIPHY_PARAM_DYN_ACK;
2519 }
2520
2521 if (changed) {
2522 u8 old_retry_short, old_retry_long;
2523 u32 old_frag_threshold, old_rts_threshold;
2524 u8 old_coverage_class;
2525
2526 if (!rdev->ops->set_wiphy_params)
2527 return -EOPNOTSUPP;
2528
2529 old_retry_short = rdev->wiphy.retry_short;
2530 old_retry_long = rdev->wiphy.retry_long;
2531 old_frag_threshold = rdev->wiphy.frag_threshold;
2532 old_rts_threshold = rdev->wiphy.rts_threshold;
2533 old_coverage_class = rdev->wiphy.coverage_class;
2534
2535 if (changed & WIPHY_PARAM_RETRY_SHORT)
2536 rdev->wiphy.retry_short = retry_short;
2537 if (changed & WIPHY_PARAM_RETRY_LONG)
2538 rdev->wiphy.retry_long = retry_long;
2539 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2540 rdev->wiphy.frag_threshold = frag_threshold;
2541 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2542 rdev->wiphy.rts_threshold = rts_threshold;
2543 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2544 rdev->wiphy.coverage_class = coverage_class;
2545
2546 result = rdev_set_wiphy_params(rdev, changed);
2547 if (result) {
2548 rdev->wiphy.retry_short = old_retry_short;
2549 rdev->wiphy.retry_long = old_retry_long;
2550 rdev->wiphy.frag_threshold = old_frag_threshold;
2551 rdev->wiphy.rts_threshold = old_rts_threshold;
2552 rdev->wiphy.coverage_class = old_coverage_class;
2553 return result;
2554 }
2555 }
2556 return 0;
2557 }
2558
2559 static inline u64 wdev_id(struct wireless_dev *wdev)
2560 {
2561 return (u64)wdev->identifier |
2562 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2563 }
2564
2565 static int nl80211_send_chandef(struct sk_buff *msg,
2566 const struct cfg80211_chan_def *chandef)
2567 {
2568 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2569 return -EINVAL;
2570
2571 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2572 chandef->chan->center_freq))
2573 return -ENOBUFS;
2574 switch (chandef->width) {
2575 case NL80211_CHAN_WIDTH_20_NOHT:
2576 case NL80211_CHAN_WIDTH_20:
2577 case NL80211_CHAN_WIDTH_40:
2578 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2579 cfg80211_get_chandef_type(chandef)))
2580 return -ENOBUFS;
2581 break;
2582 default:
2583 break;
2584 }
2585 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2586 return -ENOBUFS;
2587 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2588 return -ENOBUFS;
2589 if (chandef->center_freq2 &&
2590 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2591 return -ENOBUFS;
2592 return 0;
2593 }
2594
2595 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2596 struct cfg80211_registered_device *rdev,
2597 struct wireless_dev *wdev, bool removal)
2598 {
2599 struct net_device *dev = wdev->netdev;
2600 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2601 void *hdr;
2602
2603 if (removal)
2604 cmd = NL80211_CMD_DEL_INTERFACE;
2605
2606 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2607 if (!hdr)
2608 return -1;
2609
2610 if (dev &&
2611 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2612 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2613 goto nla_put_failure;
2614
2615 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2616 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2617 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2618 NL80211_ATTR_PAD) ||
2619 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2620 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2621 rdev->devlist_generation ^
2622 (cfg80211_rdev_list_generation << 2)))
2623 goto nla_put_failure;
2624
2625 if (rdev->ops->get_channel) {
2626 int ret;
2627 struct cfg80211_chan_def chandef = {};
2628
2629 ret = rdev_get_channel(rdev, wdev, &chandef);
2630 if (ret == 0) {
2631 if (nl80211_send_chandef(msg, &chandef))
2632 goto nla_put_failure;
2633 }
2634 }
2635
2636 if (rdev->ops->get_tx_power) {
2637 int dbm, ret;
2638
2639 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2640 if (ret == 0 &&
2641 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2642 DBM_TO_MBM(dbm)))
2643 goto nla_put_failure;
2644 }
2645
2646 wdev_lock(wdev);
2647 switch (wdev->iftype) {
2648 case NL80211_IFTYPE_AP:
2649 if (wdev->ssid_len &&
2650 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2651 goto nla_put_failure_locked;
2652 break;
2653 case NL80211_IFTYPE_STATION:
2654 case NL80211_IFTYPE_P2P_CLIENT:
2655 case NL80211_IFTYPE_ADHOC: {
2656 const u8 *ssid_ie;
2657 if (!wdev->current_bss)
2658 break;
2659 rcu_read_lock();
2660 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2661 WLAN_EID_SSID);
2662 if (ssid_ie &&
2663 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2664 goto nla_put_failure_rcu_locked;
2665 rcu_read_unlock();
2666 break;
2667 }
2668 default:
2669 /* nothing */
2670 break;
2671 }
2672 wdev_unlock(wdev);
2673
2674 genlmsg_end(msg, hdr);
2675 return 0;
2676
2677 nla_put_failure_rcu_locked:
2678 rcu_read_unlock();
2679 nla_put_failure_locked:
2680 wdev_unlock(wdev);
2681 nla_put_failure:
2682 genlmsg_cancel(msg, hdr);
2683 return -EMSGSIZE;
2684 }
2685
2686 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2687 {
2688 int wp_idx = 0;
2689 int if_idx = 0;
2690 int wp_start = cb->args[0];
2691 int if_start = cb->args[1];
2692 int filter_wiphy = -1;
2693 struct cfg80211_registered_device *rdev;
2694 struct wireless_dev *wdev;
2695 int ret;
2696
2697 rtnl_lock();
2698 if (!cb->args[2]) {
2699 struct nl80211_dump_wiphy_state state = {
2700 .filter_wiphy = -1,
2701 };
2702
2703 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2704 if (ret)
2705 goto out_unlock;
2706
2707 filter_wiphy = state.filter_wiphy;
2708
2709 /*
2710 * if filtering, set cb->args[2] to +1 since 0 is the default
2711 * value needed to determine that parsing is necessary.
2712 */
2713 if (filter_wiphy >= 0)
2714 cb->args[2] = filter_wiphy + 1;
2715 else
2716 cb->args[2] = -1;
2717 } else if (cb->args[2] > 0) {
2718 filter_wiphy = cb->args[2] - 1;
2719 }
2720
2721 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2722 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2723 continue;
2724 if (wp_idx < wp_start) {
2725 wp_idx++;
2726 continue;
2727 }
2728
2729 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2730 continue;
2731
2732 if_idx = 0;
2733
2734 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2735 if (if_idx < if_start) {
2736 if_idx++;
2737 continue;
2738 }
2739 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2740 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2741 rdev, wdev, false) < 0) {
2742 goto out;
2743 }
2744 if_idx++;
2745 }
2746
2747 wp_idx++;
2748 }
2749 out:
2750 cb->args[0] = wp_idx;
2751 cb->args[1] = if_idx;
2752
2753 ret = skb->len;
2754 out_unlock:
2755 rtnl_unlock();
2756
2757 return ret;
2758 }
2759
2760 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2761 {
2762 struct sk_buff *msg;
2763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2764 struct wireless_dev *wdev = info->user_ptr[1];
2765
2766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2767 if (!msg)
2768 return -ENOMEM;
2769
2770 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2771 rdev, wdev, false) < 0) {
2772 nlmsg_free(msg);
2773 return -ENOBUFS;
2774 }
2775
2776 return genlmsg_reply(msg, info);
2777 }
2778
2779 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2780 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2781 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2782 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2783 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2784 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2785 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2786 };
2787
2788 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2789 {
2790 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2791 int flag;
2792
2793 *mntrflags = 0;
2794
2795 if (!nla)
2796 return -EINVAL;
2797
2798 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2799 mntr_flags_policy, NULL))
2800 return -EINVAL;
2801
2802 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2803 if (flags[flag])
2804 *mntrflags |= (1<<flag);
2805
2806 *mntrflags |= MONITOR_FLAG_CHANGED;
2807
2808 return 0;
2809 }
2810
2811 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2812 enum nl80211_iftype type,
2813 struct genl_info *info,
2814 struct vif_params *params)
2815 {
2816 bool change = false;
2817 int err;
2818
2819 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2820 if (type != NL80211_IFTYPE_MONITOR)
2821 return -EINVAL;
2822
2823 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2824 &params->flags);
2825 if (err)
2826 return err;
2827
2828 change = true;
2829 }
2830
2831 if (params->flags & MONITOR_FLAG_ACTIVE &&
2832 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2833 return -EOPNOTSUPP;
2834
2835 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2836 const u8 *mumimo_groups;
2837 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2838
2839 if (type != NL80211_IFTYPE_MONITOR)
2840 return -EINVAL;
2841
2842 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2843 return -EOPNOTSUPP;
2844
2845 mumimo_groups =
2846 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2847
2848 /* bits 0 and 63 are reserved and must be zero */
2849 if ((mumimo_groups[0] & BIT(0)) ||
2850 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2851 return -EINVAL;
2852
2853 params->vht_mumimo_groups = mumimo_groups;
2854 change = true;
2855 }
2856
2857 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2858 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2859
2860 if (type != NL80211_IFTYPE_MONITOR)
2861 return -EINVAL;
2862
2863 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2864 return -EOPNOTSUPP;
2865
2866 params->vht_mumimo_follow_addr =
2867 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2868 change = true;
2869 }
2870
2871 return change ? 1 : 0;
2872 }
2873
2874 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2875 struct net_device *netdev, u8 use_4addr,
2876 enum nl80211_iftype iftype)
2877 {
2878 if (!use_4addr) {
2879 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2880 return -EBUSY;
2881 return 0;
2882 }
2883
2884 switch (iftype) {
2885 case NL80211_IFTYPE_AP_VLAN:
2886 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2887 return 0;
2888 break;
2889 case NL80211_IFTYPE_STATION:
2890 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2891 return 0;
2892 break;
2893 default:
2894 break;
2895 }
2896
2897 return -EOPNOTSUPP;
2898 }
2899
2900 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2901 {
2902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2903 struct vif_params params;
2904 int err;
2905 enum nl80211_iftype otype, ntype;
2906 struct net_device *dev = info->user_ptr[1];
2907 bool change = false;
2908
2909 memset(&params, 0, sizeof(params));
2910
2911 otype = ntype = dev->ieee80211_ptr->iftype;
2912
2913 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2914 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2915 if (otype != ntype)
2916 change = true;
2917 if (ntype > NL80211_IFTYPE_MAX)
2918 return -EINVAL;
2919 }
2920
2921 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2922 struct wireless_dev *wdev = dev->ieee80211_ptr;
2923
2924 if (ntype != NL80211_IFTYPE_MESH_POINT)
2925 return -EINVAL;
2926 if (netif_running(dev))
2927 return -EBUSY;
2928
2929 wdev_lock(wdev);
2930 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2931 IEEE80211_MAX_MESH_ID_LEN);
2932 wdev->mesh_id_up_len =
2933 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2934 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2935 wdev->mesh_id_up_len);
2936 wdev_unlock(wdev);
2937 }
2938
2939 if (info->attrs[NL80211_ATTR_4ADDR]) {
2940 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2941 change = true;
2942 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2943 if (err)
2944 return err;
2945 } else {
2946 params.use_4addr = -1;
2947 }
2948
2949 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2950 if (err < 0)
2951 return err;
2952 if (err > 0)
2953 change = true;
2954
2955 if (change)
2956 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2957 else
2958 err = 0;
2959
2960 if (!err && params.use_4addr != -1)
2961 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2962
2963 return err;
2964 }
2965
2966 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2967 {
2968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2969 struct vif_params params;
2970 struct wireless_dev *wdev;
2971 struct sk_buff *msg;
2972 int err;
2973 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2974
2975 /* to avoid failing a new interface creation due to pending removal */
2976 cfg80211_destroy_ifaces(rdev);
2977
2978 memset(&params, 0, sizeof(params));
2979
2980 if (!info->attrs[NL80211_ATTR_IFNAME])
2981 return -EINVAL;
2982
2983 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2984 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2985 if (type > NL80211_IFTYPE_MAX)
2986 return -EINVAL;
2987 }
2988
2989 if (!rdev->ops->add_virtual_intf)
2990 return -EOPNOTSUPP;
2991
2992 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2993 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2994 info->attrs[NL80211_ATTR_MAC]) {
2995 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2996 ETH_ALEN);
2997 if (!is_valid_ether_addr(params.macaddr))
2998 return -EADDRNOTAVAIL;
2999 }
3000
3001 if (info->attrs[NL80211_ATTR_4ADDR]) {
3002 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3003 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3004 if (err)
3005 return err;
3006 }
3007
3008 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3009 return -EOPNOTSUPP;
3010
3011 err = nl80211_parse_mon_options(rdev, type, info, &params);
3012 if (err < 0)
3013 return err;
3014
3015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3016 if (!msg)
3017 return -ENOMEM;
3018
3019 wdev = rdev_add_virtual_intf(rdev,
3020 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3021 NET_NAME_USER, type, &params);
3022 if (WARN_ON(!wdev)) {
3023 nlmsg_free(msg);
3024 return -EPROTO;
3025 } else if (IS_ERR(wdev)) {
3026 nlmsg_free(msg);
3027 return PTR_ERR(wdev);
3028 }
3029
3030 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3031 wdev->owner_nlportid = info->snd_portid;
3032
3033 switch (type) {
3034 case NL80211_IFTYPE_MESH_POINT:
3035 if (!info->attrs[NL80211_ATTR_MESH_ID])
3036 break;
3037 wdev_lock(wdev);
3038 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3039 IEEE80211_MAX_MESH_ID_LEN);
3040 wdev->mesh_id_up_len =
3041 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3042 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3043 wdev->mesh_id_up_len);
3044 wdev_unlock(wdev);
3045 break;
3046 case NL80211_IFTYPE_NAN:
3047 case NL80211_IFTYPE_P2P_DEVICE:
3048 /*
3049 * P2P Device and NAN do not have a netdev, so don't go
3050 * through the netdev notifier and must be added here
3051 */
3052 mutex_init(&wdev->mtx);
3053 INIT_LIST_HEAD(&wdev->event_list);
3054 spin_lock_init(&wdev->event_lock);
3055 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3056 spin_lock_init(&wdev->mgmt_registrations_lock);
3057
3058 wdev->identifier = ++rdev->wdev_id;
3059 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3060 rdev->devlist_generation++;
3061 break;
3062 default:
3063 break;
3064 }
3065
3066 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3067 rdev, wdev, false) < 0) {
3068 nlmsg_free(msg);
3069 return -ENOBUFS;
3070 }
3071
3072 /*
3073 * For wdevs which have no associated netdev object (e.g. of type
3074 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3075 * For all other types, the event will be generated from the
3076 * netdev notifier
3077 */
3078 if (!wdev->netdev)
3079 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3080
3081 return genlmsg_reply(msg, info);
3082 }
3083
3084 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3085 {
3086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3087 struct wireless_dev *wdev = info->user_ptr[1];
3088
3089 if (!rdev->ops->del_virtual_intf)
3090 return -EOPNOTSUPP;
3091
3092 /*
3093 * If we remove a wireless device without a netdev then clear
3094 * user_ptr[1] so that nl80211_post_doit won't dereference it
3095 * to check if it needs to do dev_put(). Otherwise it crashes
3096 * since the wdev has been freed, unlike with a netdev where
3097 * we need the dev_put() for the netdev to really be freed.
3098 */
3099 if (!wdev->netdev)
3100 info->user_ptr[1] = NULL;
3101
3102 return rdev_del_virtual_intf(rdev, wdev);
3103 }
3104
3105 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3106 {
3107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3108 struct net_device *dev = info->user_ptr[1];
3109 u16 noack_map;
3110
3111 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3112 return -EINVAL;
3113
3114 if (!rdev->ops->set_noack_map)
3115 return -EOPNOTSUPP;
3116
3117 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3118
3119 return rdev_set_noack_map(rdev, dev, noack_map);
3120 }
3121
3122 struct get_key_cookie {
3123 struct sk_buff *msg;
3124 int error;
3125 int idx;
3126 };
3127
3128 static void get_key_callback(void *c, struct key_params *params)
3129 {
3130 struct nlattr *key;
3131 struct get_key_cookie *cookie = c;
3132
3133 if ((params->key &&
3134 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3135 params->key_len, params->key)) ||
3136 (params->seq &&
3137 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3138 params->seq_len, params->seq)) ||
3139 (params->cipher &&
3140 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3141 params->cipher)))
3142 goto nla_put_failure;
3143
3144 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3145 if (!key)
3146 goto nla_put_failure;
3147
3148 if ((params->key &&
3149 nla_put(cookie->msg, NL80211_KEY_DATA,
3150 params->key_len, params->key)) ||
3151 (params->seq &&
3152 nla_put(cookie->msg, NL80211_KEY_SEQ,
3153 params->seq_len, params->seq)) ||
3154 (params->cipher &&
3155 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3156 params->cipher)))
3157 goto nla_put_failure;
3158
3159 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3160 goto nla_put_failure;
3161
3162 nla_nest_end(cookie->msg, key);
3163
3164 return;
3165 nla_put_failure:
3166 cookie->error = 1;
3167 }
3168
3169 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3170 {
3171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3172 int err;
3173 struct net_device *dev = info->user_ptr[1];
3174 u8 key_idx = 0;
3175 const u8 *mac_addr = NULL;
3176 bool pairwise;
3177 struct get_key_cookie cookie = {
3178 .error = 0,
3179 };
3180 void *hdr;
3181 struct sk_buff *msg;
3182
3183 if (info->attrs[NL80211_ATTR_KEY_IDX])
3184 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3185
3186 if (key_idx > 5)
3187 return -EINVAL;
3188
3189 if (info->attrs[NL80211_ATTR_MAC])
3190 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3191
3192 pairwise = !!mac_addr;
3193 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3194 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3195
3196 if (kt >= NUM_NL80211_KEYTYPES)
3197 return -EINVAL;
3198 if (kt != NL80211_KEYTYPE_GROUP &&
3199 kt != NL80211_KEYTYPE_PAIRWISE)
3200 return -EINVAL;
3201 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3202 }
3203
3204 if (!rdev->ops->get_key)
3205 return -EOPNOTSUPP;
3206
3207 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3208 return -ENOENT;
3209
3210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3211 if (!msg)
3212 return -ENOMEM;
3213
3214 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3215 NL80211_CMD_NEW_KEY);
3216 if (!hdr)
3217 goto nla_put_failure;
3218
3219 cookie.msg = msg;
3220 cookie.idx = key_idx;
3221
3222 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3223 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3224 goto nla_put_failure;
3225 if (mac_addr &&
3226 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3227 goto nla_put_failure;
3228
3229 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3230 get_key_callback);
3231
3232 if (err)
3233 goto free_msg;
3234
3235 if (cookie.error)
3236 goto nla_put_failure;
3237
3238 genlmsg_end(msg, hdr);
3239 return genlmsg_reply(msg, info);
3240
3241 nla_put_failure:
3242 err = -ENOBUFS;
3243 free_msg:
3244 nlmsg_free(msg);
3245 return err;
3246 }
3247
3248 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3249 {
3250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3251 struct key_parse key;
3252 int err;
3253 struct net_device *dev = info->user_ptr[1];
3254
3255 err = nl80211_parse_key(info, &key);
3256 if (err)
3257 return err;
3258
3259 if (key.idx < 0)
3260 return -EINVAL;
3261
3262 /* only support setting default key */
3263 if (!key.def && !key.defmgmt)
3264 return -EINVAL;
3265
3266 wdev_lock(dev->ieee80211_ptr);
3267
3268 if (key.def) {
3269 if (!rdev->ops->set_default_key) {
3270 err = -EOPNOTSUPP;
3271 goto out;
3272 }
3273
3274 err = nl80211_key_allowed(dev->ieee80211_ptr);
3275 if (err)
3276 goto out;
3277
3278 err = rdev_set_default_key(rdev, dev, key.idx,
3279 key.def_uni, key.def_multi);
3280
3281 if (err)
3282 goto out;
3283
3284 #ifdef CONFIG_CFG80211_WEXT
3285 dev->ieee80211_ptr->wext.default_key = key.idx;
3286 #endif
3287 } else {
3288 if (key.def_uni || !key.def_multi) {
3289 err = -EINVAL;
3290 goto out;
3291 }
3292
3293 if (!rdev->ops->set_default_mgmt_key) {
3294 err = -EOPNOTSUPP;
3295 goto out;
3296 }
3297
3298 err = nl80211_key_allowed(dev->ieee80211_ptr);
3299 if (err)
3300 goto out;
3301
3302 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3303 if (err)
3304 goto out;
3305
3306 #ifdef CONFIG_CFG80211_WEXT
3307 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3308 #endif
3309 }
3310
3311 out:
3312 wdev_unlock(dev->ieee80211_ptr);
3313
3314 return err;
3315 }
3316
3317 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3318 {
3319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3320 int err;
3321 struct net_device *dev = info->user_ptr[1];
3322 struct key_parse key;
3323 const u8 *mac_addr = NULL;
3324
3325 err = nl80211_parse_key(info, &key);
3326 if (err)
3327 return err;
3328
3329 if (!key.p.key)
3330 return -EINVAL;
3331
3332 if (info->attrs[NL80211_ATTR_MAC])
3333 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3334
3335 if (key.type == -1) {
3336 if (mac_addr)
3337 key.type = NL80211_KEYTYPE_PAIRWISE;
3338 else
3339 key.type = NL80211_KEYTYPE_GROUP;
3340 }
3341
3342 /* for now */
3343 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3344 key.type != NL80211_KEYTYPE_GROUP)
3345 return -EINVAL;
3346
3347 if (!rdev->ops->add_key)
3348 return -EOPNOTSUPP;
3349
3350 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3351 key.type == NL80211_KEYTYPE_PAIRWISE,
3352 mac_addr))
3353 return -EINVAL;
3354
3355 wdev_lock(dev->ieee80211_ptr);
3356 err = nl80211_key_allowed(dev->ieee80211_ptr);
3357 if (!err)
3358 err = rdev_add_key(rdev, dev, key.idx,
3359 key.type == NL80211_KEYTYPE_PAIRWISE,
3360 mac_addr, &key.p);
3361 wdev_unlock(dev->ieee80211_ptr);
3362
3363 return err;
3364 }
3365
3366 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3367 {
3368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3369 int err;
3370 struct net_device *dev = info->user_ptr[1];
3371 u8 *mac_addr = NULL;
3372 struct key_parse key;
3373
3374 err = nl80211_parse_key(info, &key);
3375 if (err)
3376 return err;
3377
3378 if (info->attrs[NL80211_ATTR_MAC])
3379 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3380
3381 if (key.type == -1) {
3382 if (mac_addr)
3383 key.type = NL80211_KEYTYPE_PAIRWISE;
3384 else
3385 key.type = NL80211_KEYTYPE_GROUP;
3386 }
3387
3388 /* for now */
3389 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3390 key.type != NL80211_KEYTYPE_GROUP)
3391 return -EINVAL;
3392
3393 if (!rdev->ops->del_key)
3394 return -EOPNOTSUPP;
3395
3396 wdev_lock(dev->ieee80211_ptr);
3397 err = nl80211_key_allowed(dev->ieee80211_ptr);
3398
3399 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3400 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3401 err = -ENOENT;
3402
3403 if (!err)
3404 err = rdev_del_key(rdev, dev, key.idx,
3405 key.type == NL80211_KEYTYPE_PAIRWISE,
3406 mac_addr);
3407
3408 #ifdef CONFIG_CFG80211_WEXT
3409 if (!err) {
3410 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3411 dev->ieee80211_ptr->wext.default_key = -1;
3412 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3413 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3414 }
3415 #endif
3416 wdev_unlock(dev->ieee80211_ptr);
3417
3418 return err;
3419 }
3420
3421 /* This function returns an error or the number of nested attributes */
3422 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3423 {
3424 struct nlattr *attr;
3425 int n_entries = 0, tmp;
3426
3427 nla_for_each_nested(attr, nl_attr, tmp) {
3428 if (nla_len(attr) != ETH_ALEN)
3429 return -EINVAL;
3430
3431 n_entries++;
3432 }
3433
3434 return n_entries;
3435 }
3436
3437 /*
3438 * This function parses ACL information and allocates memory for ACL data.
3439 * On successful return, the calling function is responsible to free the
3440 * ACL buffer returned by this function.
3441 */
3442 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3443 struct genl_info *info)
3444 {
3445 enum nl80211_acl_policy acl_policy;
3446 struct nlattr *attr;
3447 struct cfg80211_acl_data *acl;
3448 int i = 0, n_entries, tmp;
3449
3450 if (!wiphy->max_acl_mac_addrs)
3451 return ERR_PTR(-EOPNOTSUPP);
3452
3453 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3454 return ERR_PTR(-EINVAL);
3455
3456 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3457 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3458 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3459 return ERR_PTR(-EINVAL);
3460
3461 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3462 return ERR_PTR(-EINVAL);
3463
3464 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3465 if (n_entries < 0)
3466 return ERR_PTR(n_entries);
3467
3468 if (n_entries > wiphy->max_acl_mac_addrs)
3469 return ERR_PTR(-ENOTSUPP);
3470
3471 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3472 GFP_KERNEL);
3473 if (!acl)
3474 return ERR_PTR(-ENOMEM);
3475
3476 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3477 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3478 i++;
3479 }
3480
3481 acl->n_acl_entries = n_entries;
3482 acl->acl_policy = acl_policy;
3483
3484 return acl;
3485 }
3486
3487 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3488 {
3489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3490 struct net_device *dev = info->user_ptr[1];
3491 struct cfg80211_acl_data *acl;
3492 int err;
3493
3494 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3495 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3496 return -EOPNOTSUPP;
3497
3498 if (!dev->ieee80211_ptr->beacon_interval)
3499 return -EINVAL;
3500
3501 acl = parse_acl_data(&rdev->wiphy, info);
3502 if (IS_ERR(acl))
3503 return PTR_ERR(acl);
3504
3505 err = rdev_set_mac_acl(rdev, dev, acl);
3506
3507 kfree(acl);
3508
3509 return err;
3510 }
3511
3512 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3513 u8 *rates, u8 rates_len)
3514 {
3515 u8 i;
3516 u32 mask = 0;
3517
3518 for (i = 0; i < rates_len; i++) {
3519 int rate = (rates[i] & 0x7f) * 5;
3520 int ridx;
3521
3522 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3523 struct ieee80211_rate *srate =
3524 &sband->bitrates[ridx];
3525 if (rate == srate->bitrate) {
3526 mask |= 1 << ridx;
3527 break;
3528 }
3529 }
3530 if (ridx == sband->n_bitrates)
3531 return 0; /* rate not found */
3532 }
3533
3534 return mask;
3535 }
3536
3537 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3538 u8 *rates, u8 rates_len,
3539 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3540 {
3541 u8 i;
3542
3543 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3544
3545 for (i = 0; i < rates_len; i++) {
3546 int ridx, rbit;
3547
3548 ridx = rates[i] / 8;
3549 rbit = BIT(rates[i] % 8);
3550
3551 /* check validity */
3552 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3553 return false;
3554
3555 /* check availability */
3556 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3557 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3558 mcs[ridx] |= rbit;
3559 else
3560 return false;
3561 }
3562
3563 return true;
3564 }
3565
3566 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3567 {
3568 u16 mcs_mask = 0;
3569
3570 switch (vht_mcs_map) {
3571 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3572 break;
3573 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3574 mcs_mask = 0x00FF;
3575 break;
3576 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3577 mcs_mask = 0x01FF;
3578 break;
3579 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3580 mcs_mask = 0x03FF;
3581 break;
3582 default:
3583 break;
3584 }
3585
3586 return mcs_mask;
3587 }
3588
3589 static void vht_build_mcs_mask(u16 vht_mcs_map,
3590 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3591 {
3592 u8 nss;
3593
3594 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3595 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3596 vht_mcs_map >>= 2;
3597 }
3598 }
3599
3600 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3601 struct nl80211_txrate_vht *txrate,
3602 u16 mcs[NL80211_VHT_NSS_MAX])
3603 {
3604 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3605 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3606 u8 i;
3607
3608 if (!sband->vht_cap.vht_supported)
3609 return false;
3610
3611 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3612
3613 /* Build vht_mcs_mask from VHT capabilities */
3614 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3615
3616 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3617 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3618 mcs[i] = txrate->mcs[i];
3619 else
3620 return false;
3621 }
3622
3623 return true;
3624 }
3625
3626 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3627 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3628 .len = NL80211_MAX_SUPP_RATES },
3629 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3630 .len = NL80211_MAX_SUPP_HT_RATES },
3631 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3632 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3633 };
3634
3635 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3636 struct cfg80211_bitrate_mask *mask)
3637 {
3638 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3640 int rem, i;
3641 struct nlattr *tx_rates;
3642 struct ieee80211_supported_band *sband;
3643 u16 vht_tx_mcs_map;
3644
3645 memset(mask, 0, sizeof(*mask));
3646 /* Default to all rates enabled */
3647 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3648 sband = rdev->wiphy.bands[i];
3649
3650 if (!sband)
3651 continue;
3652
3653 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3654 memcpy(mask->control[i].ht_mcs,
3655 sband->ht_cap.mcs.rx_mask,
3656 sizeof(mask->control[i].ht_mcs));
3657
3658 if (!sband->vht_cap.vht_supported)
3659 continue;
3660
3661 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3662 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3663 }
3664
3665 /* if no rates are given set it back to the defaults */
3666 if (!info->attrs[NL80211_ATTR_TX_RATES])
3667 goto out;
3668
3669 /* The nested attribute uses enum nl80211_band as the index. This maps
3670 * directly to the enum nl80211_band values used in cfg80211.
3671 */
3672 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3673 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3674 enum nl80211_band band = nla_type(tx_rates);
3675 int err;
3676
3677 if (band < 0 || band >= NUM_NL80211_BANDS)
3678 return -EINVAL;
3679 sband = rdev->wiphy.bands[band];
3680 if (sband == NULL)
3681 return -EINVAL;
3682 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3683 nl80211_txattr_policy, info->extack);
3684 if (err)
3685 return err;
3686 if (tb[NL80211_TXRATE_LEGACY]) {
3687 mask->control[band].legacy = rateset_to_mask(
3688 sband,
3689 nla_data(tb[NL80211_TXRATE_LEGACY]),
3690 nla_len(tb[NL80211_TXRATE_LEGACY]));
3691 if ((mask->control[band].legacy == 0) &&
3692 nla_len(tb[NL80211_TXRATE_LEGACY]))
3693 return -EINVAL;
3694 }
3695 if (tb[NL80211_TXRATE_HT]) {
3696 if (!ht_rateset_to_mask(
3697 sband,
3698 nla_data(tb[NL80211_TXRATE_HT]),
3699 nla_len(tb[NL80211_TXRATE_HT]),
3700 mask->control[band].ht_mcs))
3701 return -EINVAL;
3702 }
3703 if (tb[NL80211_TXRATE_VHT]) {
3704 if (!vht_set_mcs_mask(
3705 sband,
3706 nla_data(tb[NL80211_TXRATE_VHT]),
3707 mask->control[band].vht_mcs))
3708 return -EINVAL;
3709 }
3710 if (tb[NL80211_TXRATE_GI]) {
3711 mask->control[band].gi =
3712 nla_get_u8(tb[NL80211_TXRATE_GI]);
3713 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3714 return -EINVAL;
3715 }
3716
3717 if (mask->control[band].legacy == 0) {
3718 /* don't allow empty legacy rates if HT or VHT
3719 * are not even supported.
3720 */
3721 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3722 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3723 return -EINVAL;
3724
3725 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3726 if (mask->control[band].ht_mcs[i])
3727 goto out;
3728
3729 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3730 if (mask->control[band].vht_mcs[i])
3731 goto out;
3732
3733 /* legacy and mcs rates may not be both empty */
3734 return -EINVAL;
3735 }
3736 }
3737
3738 out:
3739 return 0;
3740 }
3741
3742 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3743 enum nl80211_band band,
3744 struct cfg80211_bitrate_mask *beacon_rate)
3745 {
3746 u32 count_ht, count_vht, i;
3747 u32 rate = beacon_rate->control[band].legacy;
3748
3749 /* Allow only one rate */
3750 if (hweight32(rate) > 1)
3751 return -EINVAL;
3752
3753 count_ht = 0;
3754 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3755 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3756 return -EINVAL;
3757 } else if (beacon_rate->control[band].ht_mcs[i]) {
3758 count_ht++;
3759 if (count_ht > 1)
3760 return -EINVAL;
3761 }
3762 if (count_ht && rate)
3763 return -EINVAL;
3764 }
3765
3766 count_vht = 0;
3767 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3768 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3769 return -EINVAL;
3770 } else if (beacon_rate->control[band].vht_mcs[i]) {
3771 count_vht++;
3772 if (count_vht > 1)
3773 return -EINVAL;
3774 }
3775 if (count_vht && rate)
3776 return -EINVAL;
3777 }
3778
3779 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3780 return -EINVAL;
3781
3782 if (rate &&
3783 !wiphy_ext_feature_isset(&rdev->wiphy,
3784 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3785 return -EINVAL;
3786 if (count_ht &&
3787 !wiphy_ext_feature_isset(&rdev->wiphy,
3788 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3789 return -EINVAL;
3790 if (count_vht &&
3791 !wiphy_ext_feature_isset(&rdev->wiphy,
3792 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3793 return -EINVAL;
3794
3795 return 0;
3796 }
3797
3798 static int nl80211_parse_beacon(struct nlattr *attrs[],
3799 struct cfg80211_beacon_data *bcn)
3800 {
3801 bool haveinfo = false;
3802
3803 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3804 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3805 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3806 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3807 return -EINVAL;
3808
3809 memset(bcn, 0, sizeof(*bcn));
3810
3811 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3812 int ret = validate_beacon_head(attrs[NL80211_ATTR_BEACON_HEAD],
3813 NULL);
3814
3815 if (ret)
3816 return ret;
3817
3818 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3819 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3820 if (!bcn->head_len)
3821 return -EINVAL;
3822 haveinfo = true;
3823 }
3824
3825 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3826 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3827 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3828 haveinfo = true;
3829 }
3830
3831 if (!haveinfo)
3832 return -EINVAL;
3833
3834 if (attrs[NL80211_ATTR_IE]) {
3835 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3836 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3837 }
3838
3839 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3840 bcn->proberesp_ies =
3841 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3842 bcn->proberesp_ies_len =
3843 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3844 }
3845
3846 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3847 bcn->assocresp_ies =
3848 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3849 bcn->assocresp_ies_len =
3850 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3851 }
3852
3853 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3854 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3855 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3856 }
3857
3858 return 0;
3859 }
3860
3861 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3862 const u8 *rates)
3863 {
3864 int i;
3865
3866 if (!rates)
3867 return;
3868
3869 for (i = 0; i < rates[1]; i++) {
3870 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3871 params->ht_required = true;
3872 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3873 params->vht_required = true;
3874 }
3875 }
3876
3877 /*
3878 * Since the nl80211 API didn't include, from the beginning, attributes about
3879 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3880 * benefit of drivers that rebuild IEs in the firmware.
3881 */
3882 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3883 {
3884 const struct cfg80211_beacon_data *bcn = &params->beacon;
3885 size_t ies_len = bcn->tail_len;
3886 const u8 *ies = bcn->tail;
3887 const u8 *rates;
3888 const u8 *cap;
3889
3890 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3891 nl80211_check_ap_rate_selectors(params, rates);
3892
3893 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3894 nl80211_check_ap_rate_selectors(params, rates);
3895
3896 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3897 if (cap && cap[1] >= sizeof(*params->ht_cap))
3898 params->ht_cap = (void *)(cap + 2);
3899 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3900 if (cap && cap[1] >= sizeof(*params->vht_cap))
3901 params->vht_cap = (void *)(cap + 2);
3902 }
3903
3904 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3905 struct cfg80211_ap_settings *params)
3906 {
3907 struct wireless_dev *wdev;
3908 bool ret = false;
3909
3910 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3911 if (wdev->iftype != NL80211_IFTYPE_AP &&
3912 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3913 continue;
3914
3915 if (!wdev->preset_chandef.chan)
3916 continue;
3917
3918 params->chandef = wdev->preset_chandef;
3919 ret = true;
3920 break;
3921 }
3922
3923 return ret;
3924 }
3925
3926 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3927 enum nl80211_auth_type auth_type,
3928 enum nl80211_commands cmd)
3929 {
3930 if (auth_type > NL80211_AUTHTYPE_MAX)
3931 return false;
3932
3933 switch (cmd) {
3934 case NL80211_CMD_AUTHENTICATE:
3935 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3936 auth_type == NL80211_AUTHTYPE_SAE)
3937 return false;
3938 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3939 NL80211_EXT_FEATURE_FILS_STA) &&
3940 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3941 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3942 auth_type == NL80211_AUTHTYPE_FILS_PK))
3943 return false;
3944 return true;
3945 case NL80211_CMD_CONNECT:
3946 /* SAE not supported yet */
3947 if (auth_type == NL80211_AUTHTYPE_SAE)
3948 return false;
3949 /* FILS with SK PFS or PK not supported yet */
3950 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3951 auth_type == NL80211_AUTHTYPE_FILS_PK)
3952 return false;
3953 if (!wiphy_ext_feature_isset(
3954 &rdev->wiphy,
3955 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3956 auth_type == NL80211_AUTHTYPE_FILS_SK)
3957 return false;
3958 return true;
3959 case NL80211_CMD_START_AP:
3960 /* SAE not supported yet */
3961 if (auth_type == NL80211_AUTHTYPE_SAE)
3962 return false;
3963 /* FILS not supported yet */
3964 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3965 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3966 auth_type == NL80211_AUTHTYPE_FILS_PK)
3967 return false;
3968 return true;
3969 default:
3970 return false;
3971 }
3972 }
3973
3974 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3975 {
3976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3977 struct net_device *dev = info->user_ptr[1];
3978 struct wireless_dev *wdev = dev->ieee80211_ptr;
3979 struct cfg80211_ap_settings params;
3980 int err;
3981
3982 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3983 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3984 return -EOPNOTSUPP;
3985
3986 if (!rdev->ops->start_ap)
3987 return -EOPNOTSUPP;
3988
3989 if (wdev->beacon_interval)
3990 return -EALREADY;
3991
3992 memset(&params, 0, sizeof(params));
3993
3994 /* these are required for START_AP */
3995 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3996 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3997 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3998 return -EINVAL;
3999
4000 err = nl80211_parse_beacon(info->attrs, &params.beacon);
4001 if (err)
4002 return err;
4003
4004 params.beacon_interval =
4005 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4006 params.dtim_period =
4007 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4008
4009 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4010 params.beacon_interval);
4011 if (err)
4012 return err;
4013
4014 /*
4015 * In theory, some of these attributes should be required here
4016 * but since they were not used when the command was originally
4017 * added, keep them optional for old user space programs to let
4018 * them continue to work with drivers that do not need the
4019 * additional information -- drivers must check!
4020 */
4021 if (info->attrs[NL80211_ATTR_SSID]) {
4022 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4023 params.ssid_len =
4024 nla_len(info->attrs[NL80211_ATTR_SSID]);
4025 if (params.ssid_len == 0 ||
4026 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4027 return -EINVAL;
4028 }
4029
4030 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4031 params.hidden_ssid = nla_get_u32(
4032 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4033 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4034 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4035 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4036 return -EINVAL;
4037 }
4038
4039 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4040
4041 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4042 params.auth_type = nla_get_u32(
4043 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4044 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4045 NL80211_CMD_START_AP))
4046 return -EINVAL;
4047 } else
4048 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4049
4050 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4051 NL80211_MAX_NR_CIPHER_SUITES);
4052 if (err)
4053 return err;
4054
4055 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4056 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4057 return -EOPNOTSUPP;
4058 params.inactivity_timeout = nla_get_u16(
4059 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4060 }
4061
4062 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4063 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4064 return -EINVAL;
4065 params.p2p_ctwindow =
4066 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4067 if (params.p2p_ctwindow > 127)
4068 return -EINVAL;
4069 if (params.p2p_ctwindow != 0 &&
4070 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4071 return -EINVAL;
4072 }
4073
4074 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4075 u8 tmp;
4076
4077 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4078 return -EINVAL;
4079 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4080 if (tmp > 1)
4081 return -EINVAL;
4082 params.p2p_opp_ps = tmp;
4083 if (params.p2p_opp_ps != 0 &&
4084 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4085 return -EINVAL;
4086 }
4087
4088 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4089 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4090 if (err)
4091 return err;
4092 } else if (wdev->preset_chandef.chan) {
4093 params.chandef = wdev->preset_chandef;
4094 } else if (!nl80211_get_ap_channel(rdev, &params))
4095 return -EINVAL;
4096
4097 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4098 wdev->iftype))
4099 return -EINVAL;
4100
4101 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4102 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4103 if (err)
4104 return err;
4105
4106 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4107 &params.beacon_rate);
4108 if (err)
4109 return err;
4110 }
4111
4112 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4113 params.smps_mode =
4114 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4115 switch (params.smps_mode) {
4116 case NL80211_SMPS_OFF:
4117 break;
4118 case NL80211_SMPS_STATIC:
4119 if (!(rdev->wiphy.features &
4120 NL80211_FEATURE_STATIC_SMPS))
4121 return -EINVAL;
4122 break;
4123 case NL80211_SMPS_DYNAMIC:
4124 if (!(rdev->wiphy.features &
4125 NL80211_FEATURE_DYNAMIC_SMPS))
4126 return -EINVAL;
4127 break;
4128 default:
4129 return -EINVAL;
4130 }
4131 } else {
4132 params.smps_mode = NL80211_SMPS_OFF;
4133 }
4134
4135 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4136 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4137 return -EOPNOTSUPP;
4138
4139 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4140 params.acl = parse_acl_data(&rdev->wiphy, info);
4141 if (IS_ERR(params.acl))
4142 return PTR_ERR(params.acl);
4143 }
4144
4145 nl80211_calculate_ap_params(&params);
4146
4147 wdev_lock(wdev);
4148 err = rdev_start_ap(rdev, dev, &params);
4149 if (!err) {
4150 wdev->preset_chandef = params.chandef;
4151 wdev->beacon_interval = params.beacon_interval;
4152 wdev->chandef = params.chandef;
4153 wdev->ssid_len = params.ssid_len;
4154 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4155 }
4156 wdev_unlock(wdev);
4157
4158 kfree(params.acl);
4159
4160 return err;
4161 }
4162
4163 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4164 {
4165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4166 struct net_device *dev = info->user_ptr[1];
4167 struct wireless_dev *wdev = dev->ieee80211_ptr;
4168 struct cfg80211_beacon_data params;
4169 int err;
4170
4171 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4172 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4173 return -EOPNOTSUPP;
4174
4175 if (!rdev->ops->change_beacon)
4176 return -EOPNOTSUPP;
4177
4178 if (!wdev->beacon_interval)
4179 return -EINVAL;
4180
4181 err = nl80211_parse_beacon(info->attrs, &params);
4182 if (err)
4183 return err;
4184
4185 wdev_lock(wdev);
4186 err = rdev_change_beacon(rdev, dev, &params);
4187 wdev_unlock(wdev);
4188
4189 return err;
4190 }
4191
4192 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4193 {
4194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4195 struct net_device *dev = info->user_ptr[1];
4196
4197 return cfg80211_stop_ap(rdev, dev, false);
4198 }
4199
4200 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4201 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4202 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4203 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4204 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4205 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4206 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4207 };
4208
4209 static int parse_station_flags(struct genl_info *info,
4210 enum nl80211_iftype iftype,
4211 struct station_parameters *params)
4212 {
4213 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4214 struct nlattr *nla;
4215 int flag;
4216
4217 /*
4218 * Try parsing the new attribute first so userspace
4219 * can specify both for older kernels.
4220 */
4221 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4222 if (nla) {
4223 struct nl80211_sta_flag_update *sta_flags;
4224
4225 sta_flags = nla_data(nla);
4226 params->sta_flags_mask = sta_flags->mask;
4227 params->sta_flags_set = sta_flags->set;
4228 params->sta_flags_set &= params->sta_flags_mask;
4229 if ((params->sta_flags_mask |
4230 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4231 return -EINVAL;
4232 return 0;
4233 }
4234
4235 /* if present, parse the old attribute */
4236
4237 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4238 if (!nla)
4239 return 0;
4240
4241 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4242 sta_flags_policy, info->extack))
4243 return -EINVAL;
4244
4245 /*
4246 * Only allow certain flags for interface types so that
4247 * other attributes are silently ignored. Remember that
4248 * this is backward compatibility code with old userspace
4249 * and shouldn't be hit in other cases anyway.
4250 */
4251 switch (iftype) {
4252 case NL80211_IFTYPE_AP:
4253 case NL80211_IFTYPE_AP_VLAN:
4254 case NL80211_IFTYPE_P2P_GO:
4255 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4256 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4257 BIT(NL80211_STA_FLAG_WME) |
4258 BIT(NL80211_STA_FLAG_MFP);
4259 break;
4260 case NL80211_IFTYPE_P2P_CLIENT:
4261 case NL80211_IFTYPE_STATION:
4262 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4263 BIT(NL80211_STA_FLAG_TDLS_PEER);
4264 break;
4265 case NL80211_IFTYPE_MESH_POINT:
4266 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4267 BIT(NL80211_STA_FLAG_MFP) |
4268 BIT(NL80211_STA_FLAG_AUTHORIZED);
4269 break;
4270 default:
4271 return -EINVAL;
4272 }
4273
4274 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4275 if (flags[flag]) {
4276 params->sta_flags_set |= (1<<flag);
4277
4278 /* no longer support new API additions in old API */
4279 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4280 return -EINVAL;
4281 }
4282 }
4283
4284 return 0;
4285 }
4286
4287 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4288 int attr)
4289 {
4290 struct nlattr *rate;
4291 u32 bitrate;
4292 u16 bitrate_compat;
4293 enum nl80211_rate_info rate_flg;
4294
4295 rate = nla_nest_start(msg, attr);
4296 if (!rate)
4297 return false;
4298
4299 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4300 bitrate = cfg80211_calculate_bitrate(info);
4301 /* report 16-bit bitrate only if we can */
4302 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4303 if (bitrate > 0 &&
4304 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4305 return false;
4306 if (bitrate_compat > 0 &&
4307 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4308 return false;
4309
4310 switch (info->bw) {
4311 case RATE_INFO_BW_5:
4312 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4313 break;
4314 case RATE_INFO_BW_10:
4315 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4316 break;
4317 default:
4318 WARN_ON(1);
4319 /* fall through */
4320 case RATE_INFO_BW_20:
4321 rate_flg = 0;
4322 break;
4323 case RATE_INFO_BW_40:
4324 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4325 break;
4326 case RATE_INFO_BW_80:
4327 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4328 break;
4329 case RATE_INFO_BW_160:
4330 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4331 break;
4332 }
4333
4334 if (rate_flg && nla_put_flag(msg, rate_flg))
4335 return false;
4336
4337 if (info->flags & RATE_INFO_FLAGS_MCS) {
4338 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4339 return false;
4340 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4341 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4342 return false;
4343 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4344 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4345 return false;
4346 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4347 return false;
4348 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4349 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4350 return false;
4351 }
4352
4353 nla_nest_end(msg, rate);
4354 return true;
4355 }
4356
4357 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4358 int id)
4359 {
4360 void *attr;
4361 int i = 0;
4362
4363 if (!mask)
4364 return true;
4365
4366 attr = nla_nest_start(msg, id);
4367 if (!attr)
4368 return false;
4369
4370 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4371 if (!(mask & BIT(i)))
4372 continue;
4373
4374 if (nla_put_u8(msg, i, signal[i]))
4375 return false;
4376 }
4377
4378 nla_nest_end(msg, attr);
4379
4380 return true;
4381 }
4382
4383 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4384 u32 seq, int flags,
4385 struct cfg80211_registered_device *rdev,
4386 struct net_device *dev,
4387 const u8 *mac_addr, struct station_info *sinfo)
4388 {
4389 void *hdr;
4390 struct nlattr *sinfoattr, *bss_param;
4391
4392 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4393 if (!hdr)
4394 return -1;
4395
4396 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4397 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4398 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4399 goto nla_put_failure;
4400
4401 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4402 if (!sinfoattr)
4403 goto nla_put_failure;
4404
4405 #define PUT_SINFO(attr, memb, type) do { \
4406 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4407 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4408 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4409 sinfo->memb)) \
4410 goto nla_put_failure; \
4411 } while (0)
4412 #define PUT_SINFO_U64(attr, memb) do { \
4413 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4414 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4415 sinfo->memb, NL80211_STA_INFO_PAD)) \
4416 goto nla_put_failure; \
4417 } while (0)
4418
4419 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4420 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4421
4422 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4423 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4424 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4425 (u32)sinfo->rx_bytes))
4426 goto nla_put_failure;
4427
4428 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4429 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4430 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4431 (u32)sinfo->tx_bytes))
4432 goto nla_put_failure;
4433
4434 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4435 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4436 PUT_SINFO(LLID, llid, u16);
4437 PUT_SINFO(PLID, plid, u16);
4438 PUT_SINFO(PLINK_STATE, plink_state, u8);
4439 PUT_SINFO_U64(RX_DURATION, rx_duration);
4440
4441 switch (rdev->wiphy.signal_type) {
4442 case CFG80211_SIGNAL_TYPE_MBM:
4443 PUT_SINFO(SIGNAL, signal, u8);
4444 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4445 break;
4446 default:
4447 break;
4448 }
4449 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4450 if (!nl80211_put_signal(msg, sinfo->chains,
4451 sinfo->chain_signal,
4452 NL80211_STA_INFO_CHAIN_SIGNAL))
4453 goto nla_put_failure;
4454 }
4455 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4456 if (!nl80211_put_signal(msg, sinfo->chains,
4457 sinfo->chain_signal_avg,
4458 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4459 goto nla_put_failure;
4460 }
4461 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4462 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4463 NL80211_STA_INFO_TX_BITRATE))
4464 goto nla_put_failure;
4465 }
4466 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4467 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4468 NL80211_STA_INFO_RX_BITRATE))
4469 goto nla_put_failure;
4470 }
4471
4472 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4473 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4474 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4475 PUT_SINFO(TX_FAILED, tx_failed, u32);
4476 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4477 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4478 PUT_SINFO(LOCAL_PM, local_pm, u32);
4479 PUT_SINFO(PEER_PM, peer_pm, u32);
4480 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4481
4482 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4483 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4484 if (!bss_param)
4485 goto nla_put_failure;
4486
4487 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4488 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4489 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4490 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4491 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4492 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4493 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4494 sinfo->bss_param.dtim_period) ||
4495 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4496 sinfo->bss_param.beacon_interval))
4497 goto nla_put_failure;
4498
4499 nla_nest_end(msg, bss_param);
4500 }
4501 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4502 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4503 sizeof(struct nl80211_sta_flag_update),
4504 &sinfo->sta_flags))
4505 goto nla_put_failure;
4506
4507 PUT_SINFO_U64(T_OFFSET, t_offset);
4508 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4509 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4510 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4511
4512 #undef PUT_SINFO
4513 #undef PUT_SINFO_U64
4514
4515 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4516 struct nlattr *tidsattr;
4517 int tid;
4518
4519 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4520 if (!tidsattr)
4521 goto nla_put_failure;
4522
4523 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4524 struct cfg80211_tid_stats *tidstats;
4525 struct nlattr *tidattr;
4526
4527 tidstats = &sinfo->pertid[tid];
4528
4529 if (!tidstats->filled)
4530 continue;
4531
4532 tidattr = nla_nest_start(msg, tid + 1);
4533 if (!tidattr)
4534 goto nla_put_failure;
4535
4536 #define PUT_TIDVAL_U64(attr, memb) do { \
4537 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4538 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4539 tidstats->memb, NL80211_TID_STATS_PAD)) \
4540 goto nla_put_failure; \
4541 } while (0)
4542
4543 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4544 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4545 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4546 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4547
4548 #undef PUT_TIDVAL_U64
4549 nla_nest_end(msg, tidattr);
4550 }
4551
4552 nla_nest_end(msg, tidsattr);
4553 }
4554
4555 nla_nest_end(msg, sinfoattr);
4556
4557 if (sinfo->assoc_req_ies_len &&
4558 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4559 sinfo->assoc_req_ies))
4560 goto nla_put_failure;
4561
4562 genlmsg_end(msg, hdr);
4563 return 0;
4564
4565 nla_put_failure:
4566 genlmsg_cancel(msg, hdr);
4567 return -EMSGSIZE;
4568 }
4569
4570 static int nl80211_dump_station(struct sk_buff *skb,
4571 struct netlink_callback *cb)
4572 {
4573 struct station_info sinfo;
4574 struct cfg80211_registered_device *rdev;
4575 struct wireless_dev *wdev;
4576 u8 mac_addr[ETH_ALEN];
4577 int sta_idx = cb->args[2];
4578 int err;
4579
4580 rtnl_lock();
4581 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4582 if (err)
4583 goto out_err;
4584
4585 if (!wdev->netdev) {
4586 err = -EINVAL;
4587 goto out_err;
4588 }
4589
4590 if (!rdev->ops->dump_station) {
4591 err = -EOPNOTSUPP;
4592 goto out_err;
4593 }
4594
4595 while (1) {
4596 memset(&sinfo, 0, sizeof(sinfo));
4597 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4598 mac_addr, &sinfo);
4599 if (err == -ENOENT)
4600 break;
4601 if (err)
4602 goto out_err;
4603
4604 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4605 NETLINK_CB(cb->skb).portid,
4606 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4607 rdev, wdev->netdev, mac_addr,
4608 &sinfo) < 0)
4609 goto out;
4610
4611 sta_idx++;
4612 }
4613
4614 out:
4615 cb->args[2] = sta_idx;
4616 err = skb->len;
4617 out_err:
4618 rtnl_unlock();
4619
4620 return err;
4621 }
4622
4623 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4624 {
4625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4626 struct net_device *dev = info->user_ptr[1];
4627 struct station_info sinfo;
4628 struct sk_buff *msg;
4629 u8 *mac_addr = NULL;
4630 int err;
4631
4632 memset(&sinfo, 0, sizeof(sinfo));
4633
4634 if (!info->attrs[NL80211_ATTR_MAC])
4635 return -EINVAL;
4636
4637 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4638
4639 if (!rdev->ops->get_station)
4640 return -EOPNOTSUPP;
4641
4642 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4643 if (err)
4644 return err;
4645
4646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4647 if (!msg)
4648 return -ENOMEM;
4649
4650 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4651 info->snd_portid, info->snd_seq, 0,
4652 rdev, dev, mac_addr, &sinfo) < 0) {
4653 nlmsg_free(msg);
4654 return -ENOBUFS;
4655 }
4656
4657 return genlmsg_reply(msg, info);
4658 }
4659
4660 int cfg80211_check_station_change(struct wiphy *wiphy,
4661 struct station_parameters *params,
4662 enum cfg80211_station_type statype)
4663 {
4664 if (params->listen_interval != -1 &&
4665 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4666 return -EINVAL;
4667
4668 if (params->support_p2p_ps != -1 &&
4669 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4670 return -EINVAL;
4671
4672 if (params->aid &&
4673 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4674 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4675 return -EINVAL;
4676
4677 /* When you run into this, adjust the code below for the new flag */
4678 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4679
4680 switch (statype) {
4681 case CFG80211_STA_MESH_PEER_KERNEL:
4682 case CFG80211_STA_MESH_PEER_USER:
4683 /*
4684 * No ignoring the TDLS flag here -- the userspace mesh
4685 * code doesn't have the bug of including TDLS in the
4686 * mask everywhere.
4687 */
4688 if (params->sta_flags_mask &
4689 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4690 BIT(NL80211_STA_FLAG_MFP) |
4691 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4692 return -EINVAL;
4693 break;
4694 case CFG80211_STA_TDLS_PEER_SETUP:
4695 case CFG80211_STA_TDLS_PEER_ACTIVE:
4696 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4697 return -EINVAL;
4698 /* ignore since it can't change */
4699 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4700 break;
4701 default:
4702 /* disallow mesh-specific things */
4703 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4704 return -EINVAL;
4705 if (params->local_pm)
4706 return -EINVAL;
4707 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4708 return -EINVAL;
4709 }
4710
4711 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4712 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4713 /* TDLS can't be set, ... */
4714 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4715 return -EINVAL;
4716 /*
4717 * ... but don't bother the driver with it. This works around
4718 * a hostapd/wpa_supplicant issue -- it always includes the
4719 * TLDS_PEER flag in the mask even for AP mode.
4720 */
4721 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4722 }
4723
4724 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4725 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4726 /* reject other things that can't change */
4727 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4728 return -EINVAL;
4729 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4730 return -EINVAL;
4731 if (params->supported_rates)
4732 return -EINVAL;
4733 if (params->ext_capab || params->ht_capa || params->vht_capa)
4734 return -EINVAL;
4735 }
4736
4737 if (statype != CFG80211_STA_AP_CLIENT &&
4738 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4739 if (params->vlan)
4740 return -EINVAL;
4741 }
4742
4743 switch (statype) {
4744 case CFG80211_STA_AP_MLME_CLIENT:
4745 /* Use this only for authorizing/unauthorizing a station */
4746 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4747 return -EOPNOTSUPP;
4748 break;
4749 case CFG80211_STA_AP_CLIENT:
4750 case CFG80211_STA_AP_CLIENT_UNASSOC:
4751 /* accept only the listed bits */
4752 if (params->sta_flags_mask &
4753 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4754 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4755 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4756 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4757 BIT(NL80211_STA_FLAG_WME) |
4758 BIT(NL80211_STA_FLAG_MFP)))
4759 return -EINVAL;
4760
4761 /* but authenticated/associated only if driver handles it */
4762 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4763 params->sta_flags_mask &
4764 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4765 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4766 return -EINVAL;
4767 break;
4768 case CFG80211_STA_IBSS:
4769 case CFG80211_STA_AP_STA:
4770 /* reject any changes other than AUTHORIZED */
4771 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4772 return -EINVAL;
4773 break;
4774 case CFG80211_STA_TDLS_PEER_SETUP:
4775 /* reject any changes other than AUTHORIZED or WME */
4776 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4777 BIT(NL80211_STA_FLAG_WME)))
4778 return -EINVAL;
4779 /* force (at least) rates when authorizing */
4780 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4781 !params->supported_rates)
4782 return -EINVAL;
4783 break;
4784 case CFG80211_STA_TDLS_PEER_ACTIVE:
4785 /* reject any changes */
4786 return -EINVAL;
4787 case CFG80211_STA_MESH_PEER_KERNEL:
4788 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4789 return -EINVAL;
4790 break;
4791 case CFG80211_STA_MESH_PEER_USER:
4792 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4793 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4794 return -EINVAL;
4795 break;
4796 }
4797
4798 /*
4799 * Older kernel versions ignored this attribute entirely, so don't
4800 * reject attempts to update it but mark it as unused instead so the
4801 * driver won't look at the data.
4802 */
4803 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4804 statype != CFG80211_STA_TDLS_PEER_SETUP)
4805 params->opmode_notif_used = false;
4806
4807 return 0;
4808 }
4809 EXPORT_SYMBOL(cfg80211_check_station_change);
4810
4811 /*
4812 * Get vlan interface making sure it is running and on the right wiphy.
4813 */
4814 static struct net_device *get_vlan(struct genl_info *info,
4815 struct cfg80211_registered_device *rdev)
4816 {
4817 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4818 struct net_device *v;
4819 int ret;
4820
4821 if (!vlanattr)
4822 return NULL;
4823
4824 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4825 if (!v)
4826 return ERR_PTR(-ENODEV);
4827
4828 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4829 ret = -EINVAL;
4830 goto error;
4831 }
4832
4833 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4834 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4835 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4836 ret = -EINVAL;
4837 goto error;
4838 }
4839
4840 if (!netif_running(v)) {
4841 ret = -ENETDOWN;
4842 goto error;
4843 }
4844
4845 return v;
4846 error:
4847 dev_put(v);
4848 return ERR_PTR(ret);
4849 }
4850
4851 static const struct nla_policy
4852 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4853 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4854 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4855 };
4856
4857 static int nl80211_parse_sta_wme(struct genl_info *info,
4858 struct station_parameters *params)
4859 {
4860 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4861 struct nlattr *nla;
4862 int err;
4863
4864 /* parse WME attributes if present */
4865 if (!info->attrs[NL80211_ATTR_STA_WME])
4866 return 0;
4867
4868 nla = info->attrs[NL80211_ATTR_STA_WME];
4869 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4870 nl80211_sta_wme_policy, info->extack);
4871 if (err)
4872 return err;
4873
4874 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4875 params->uapsd_queues = nla_get_u8(
4876 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4877 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4878 return -EINVAL;
4879
4880 if (tb[NL80211_STA_WME_MAX_SP])
4881 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4882
4883 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4884 return -EINVAL;
4885
4886 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4887
4888 return 0;
4889 }
4890
4891 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4892 struct station_parameters *params)
4893 {
4894 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4895 params->supported_channels =
4896 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4897 params->supported_channels_len =
4898 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4899 /*
4900 * Need to include at least one (first channel, number of
4901 * channels) tuple for each subband, and must have proper
4902 * tuples for the rest of the data as well.
4903 */
4904 if (params->supported_channels_len < 2)
4905 return -EINVAL;
4906 if (params->supported_channels_len % 2)
4907 return -EINVAL;
4908 }
4909
4910 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4911 params->supported_oper_classes =
4912 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4913 params->supported_oper_classes_len =
4914 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4915 /*
4916 * The value of the Length field of the Supported Operating
4917 * Classes element is between 2 and 253.
4918 */
4919 if (params->supported_oper_classes_len < 2 ||
4920 params->supported_oper_classes_len > 253)
4921 return -EINVAL;
4922 }
4923 return 0;
4924 }
4925
4926 static int nl80211_set_station_tdls(struct genl_info *info,
4927 struct station_parameters *params)
4928 {
4929 int err;
4930 /* Dummy STA entry gets updated once the peer capabilities are known */
4931 if (info->attrs[NL80211_ATTR_PEER_AID])
4932 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4933 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4934 params->ht_capa =
4935 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4936 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4937 params->vht_capa =
4938 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4939
4940 err = nl80211_parse_sta_channel_info(info, params);
4941 if (err)
4942 return err;
4943
4944 return nl80211_parse_sta_wme(info, params);
4945 }
4946
4947 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4948 {
4949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4950 struct net_device *dev = info->user_ptr[1];
4951 struct station_parameters params;
4952 u8 *mac_addr;
4953 int err;
4954
4955 memset(&params, 0, sizeof(params));
4956
4957 if (!rdev->ops->change_station)
4958 return -EOPNOTSUPP;
4959
4960 /*
4961 * AID and listen_interval properties can be set only for unassociated
4962 * station. Include these parameters here and will check them in
4963 * cfg80211_check_station_change().
4964 */
4965 if (info->attrs[NL80211_ATTR_STA_AID])
4966 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4967
4968 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4969 params.listen_interval =
4970 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4971 else
4972 params.listen_interval = -1;
4973
4974 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4975 u8 tmp;
4976
4977 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4978 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4979 return -EINVAL;
4980
4981 params.support_p2p_ps = tmp;
4982 } else {
4983 params.support_p2p_ps = -1;
4984 }
4985
4986 if (!info->attrs[NL80211_ATTR_MAC])
4987 return -EINVAL;
4988
4989 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4990
4991 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4992 params.supported_rates =
4993 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4994 params.supported_rates_len =
4995 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4996 }
4997
4998 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4999 params.capability =
5000 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5001 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5002 }
5003
5004 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5005 params.ext_capab =
5006 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5007 params.ext_capab_len =
5008 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5009 }
5010
5011 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5012 return -EINVAL;
5013
5014 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5015 params.plink_action =
5016 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5017 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5018 return -EINVAL;
5019 }
5020
5021 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5022 params.plink_state =
5023 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5024 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5025 return -EINVAL;
5026 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5027 params.peer_aid = nla_get_u16(
5028 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5029 if (params.peer_aid > IEEE80211_MAX_AID)
5030 return -EINVAL;
5031 }
5032 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5033 }
5034
5035 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5036 enum nl80211_mesh_power_mode pm = nla_get_u32(
5037 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5038
5039 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5040 pm > NL80211_MESH_POWER_MAX)
5041 return -EINVAL;
5042
5043 params.local_pm = pm;
5044 }
5045
5046 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5047 params.opmode_notif_used = true;
5048 params.opmode_notif =
5049 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5050 }
5051
5052 /* Include parameters for TDLS peer (will check later) */
5053 err = nl80211_set_station_tdls(info, &params);
5054 if (err)
5055 return err;
5056
5057 params.vlan = get_vlan(info, rdev);
5058 if (IS_ERR(params.vlan))
5059 return PTR_ERR(params.vlan);
5060
5061 switch (dev->ieee80211_ptr->iftype) {
5062 case NL80211_IFTYPE_AP:
5063 case NL80211_IFTYPE_AP_VLAN:
5064 case NL80211_IFTYPE_P2P_GO:
5065 case NL80211_IFTYPE_P2P_CLIENT:
5066 case NL80211_IFTYPE_STATION:
5067 case NL80211_IFTYPE_ADHOC:
5068 case NL80211_IFTYPE_MESH_POINT:
5069 break;
5070 default:
5071 err = -EOPNOTSUPP;
5072 goto out_put_vlan;
5073 }
5074
5075 /* driver will call cfg80211_check_station_change() */
5076 err = rdev_change_station(rdev, dev, mac_addr, &params);
5077
5078 out_put_vlan:
5079 if (params.vlan)
5080 dev_put(params.vlan);
5081
5082 return err;
5083 }
5084
5085 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5086 {
5087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5088 int err;
5089 struct net_device *dev = info->user_ptr[1];
5090 struct station_parameters params;
5091 u8 *mac_addr = NULL;
5092 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5093 BIT(NL80211_STA_FLAG_ASSOCIATED);
5094
5095 memset(&params, 0, sizeof(params));
5096
5097 if (!rdev->ops->add_station)
5098 return -EOPNOTSUPP;
5099
5100 if (!info->attrs[NL80211_ATTR_MAC])
5101 return -EINVAL;
5102
5103 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5104 return -EINVAL;
5105
5106 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5107 return -EINVAL;
5108
5109 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5110 !info->attrs[NL80211_ATTR_PEER_AID])
5111 return -EINVAL;
5112
5113 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5114 params.supported_rates =
5115 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5116 params.supported_rates_len =
5117 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5118 params.listen_interval =
5119 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5120
5121 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5122 u8 tmp;
5123
5124 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5125 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5126 return -EINVAL;
5127
5128 params.support_p2p_ps = tmp;
5129 } else {
5130 /*
5131 * if not specified, assume it's supported for P2P GO interface,
5132 * and is NOT supported for AP interface
5133 */
5134 params.support_p2p_ps =
5135 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5136 }
5137
5138 if (info->attrs[NL80211_ATTR_PEER_AID])
5139 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5140 else
5141 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5142 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5143 return -EINVAL;
5144
5145 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5146 params.capability =
5147 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5148 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5149 }
5150
5151 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5152 params.ext_capab =
5153 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5154 params.ext_capab_len =
5155 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5156 }
5157
5158 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5159 params.ht_capa =
5160 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5161
5162 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5163 params.vht_capa =
5164 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5165
5166 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5167 params.opmode_notif_used = true;
5168 params.opmode_notif =
5169 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5170 }
5171
5172 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5173 params.plink_action =
5174 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5175 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5176 return -EINVAL;
5177 }
5178
5179 err = nl80211_parse_sta_channel_info(info, &params);
5180 if (err)
5181 return err;
5182
5183 err = nl80211_parse_sta_wme(info, &params);
5184 if (err)
5185 return err;
5186
5187 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5188 return -EINVAL;
5189
5190 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5191 * as userspace might just pass through the capabilities from the IEs
5192 * directly, rather than enforcing this restriction and returning an
5193 * error in this case.
5194 */
5195 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5196 params.ht_capa = NULL;
5197 params.vht_capa = NULL;
5198 }
5199
5200 /* When you run into this, adjust the code below for the new flag */
5201 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5202
5203 switch (dev->ieee80211_ptr->iftype) {
5204 case NL80211_IFTYPE_AP:
5205 case NL80211_IFTYPE_AP_VLAN:
5206 case NL80211_IFTYPE_P2P_GO:
5207 /* ignore WME attributes if iface/sta is not capable */
5208 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5209 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5210 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5211
5212 /* TDLS peers cannot be added */
5213 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5214 info->attrs[NL80211_ATTR_PEER_AID])
5215 return -EINVAL;
5216 /* but don't bother the driver with it */
5217 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5218
5219 /* allow authenticated/associated only if driver handles it */
5220 if (!(rdev->wiphy.features &
5221 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5222 params.sta_flags_mask & auth_assoc)
5223 return -EINVAL;
5224
5225 /* Older userspace, or userspace wanting to be compatible with
5226 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5227 * and assoc flags in the mask, but assumes the station will be
5228 * added as associated anyway since this was the required driver
5229 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5230 * introduced.
5231 * In order to not bother drivers with this quirk in the API
5232 * set the flags in both the mask and set for new stations in
5233 * this case.
5234 */
5235 if (!(params.sta_flags_mask & auth_assoc)) {
5236 params.sta_flags_mask |= auth_assoc;
5237 params.sta_flags_set |= auth_assoc;
5238 }
5239
5240 /* must be last in here for error handling */
5241 params.vlan = get_vlan(info, rdev);
5242 if (IS_ERR(params.vlan))
5243 return PTR_ERR(params.vlan);
5244 break;
5245 case NL80211_IFTYPE_MESH_POINT:
5246 /* ignore uAPSD data */
5247 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5248
5249 /* associated is disallowed */
5250 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5251 return -EINVAL;
5252 /* TDLS peers cannot be added */
5253 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5254 info->attrs[NL80211_ATTR_PEER_AID])
5255 return -EINVAL;
5256 break;
5257 case NL80211_IFTYPE_STATION:
5258 case NL80211_IFTYPE_P2P_CLIENT:
5259 /* ignore uAPSD data */
5260 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5261
5262 /* these are disallowed */
5263 if (params.sta_flags_mask &
5264 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5265 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5266 return -EINVAL;
5267 /* Only TDLS peers can be added */
5268 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5269 return -EINVAL;
5270 /* Can only add if TDLS ... */
5271 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5272 return -EOPNOTSUPP;
5273 /* ... with external setup is supported */
5274 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5275 return -EOPNOTSUPP;
5276 /*
5277 * Older wpa_supplicant versions always mark the TDLS peer
5278 * as authorized, but it shouldn't yet be.
5279 */
5280 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5281 break;
5282 default:
5283 return -EOPNOTSUPP;
5284 }
5285
5286 /* be aware of params.vlan when changing code here */
5287
5288 err = rdev_add_station(rdev, dev, mac_addr, &params);
5289
5290 if (params.vlan)
5291 dev_put(params.vlan);
5292 return err;
5293 }
5294
5295 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5296 {
5297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5298 struct net_device *dev = info->user_ptr[1];
5299 struct station_del_parameters params;
5300
5301 memset(&params, 0, sizeof(params));
5302
5303 if (info->attrs[NL80211_ATTR_MAC])
5304 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5305
5306 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5307 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5308 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5309 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5310 return -EINVAL;
5311
5312 if (!rdev->ops->del_station)
5313 return -EOPNOTSUPP;
5314
5315 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5316 params.subtype =
5317 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5318 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5319 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5320 return -EINVAL;
5321 } else {
5322 /* Default to Deauthentication frame */
5323 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5324 }
5325
5326 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5327 params.reason_code =
5328 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5329 if (params.reason_code == 0)
5330 return -EINVAL; /* 0 is reserved */
5331 } else {
5332 /* Default to reason code 2 */
5333 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5334 }
5335
5336 return rdev_del_station(rdev, dev, &params);
5337 }
5338
5339 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5340 int flags, struct net_device *dev,
5341 u8 *dst, u8 *next_hop,
5342 struct mpath_info *pinfo)
5343 {
5344 void *hdr;
5345 struct nlattr *pinfoattr;
5346
5347 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5348 if (!hdr)
5349 return -1;
5350
5351 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5352 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5353 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5354 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5355 goto nla_put_failure;
5356
5357 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5358 if (!pinfoattr)
5359 goto nla_put_failure;
5360 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5361 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5362 pinfo->frame_qlen))
5363 goto nla_put_failure;
5364 if (((pinfo->filled & MPATH_INFO_SN) &&
5365 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5366 ((pinfo->filled & MPATH_INFO_METRIC) &&
5367 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5368 pinfo->metric)) ||
5369 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5370 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5371 pinfo->exptime)) ||
5372 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5373 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5374 pinfo->flags)) ||
5375 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5376 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5377 pinfo->discovery_timeout)) ||
5378 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5379 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5380 pinfo->discovery_retries)))
5381 goto nla_put_failure;
5382
5383 nla_nest_end(msg, pinfoattr);
5384
5385 genlmsg_end(msg, hdr);
5386 return 0;
5387
5388 nla_put_failure:
5389 genlmsg_cancel(msg, hdr);
5390 return -EMSGSIZE;
5391 }
5392
5393 static int nl80211_dump_mpath(struct sk_buff *skb,
5394 struct netlink_callback *cb)
5395 {
5396 struct mpath_info pinfo;
5397 struct cfg80211_registered_device *rdev;
5398 struct wireless_dev *wdev;
5399 u8 dst[ETH_ALEN];
5400 u8 next_hop[ETH_ALEN];
5401 int path_idx = cb->args[2];
5402 int err;
5403
5404 rtnl_lock();
5405 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5406 if (err)
5407 goto out_err;
5408
5409 if (!rdev->ops->dump_mpath) {
5410 err = -EOPNOTSUPP;
5411 goto out_err;
5412 }
5413
5414 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5415 err = -EOPNOTSUPP;
5416 goto out_err;
5417 }
5418
5419 while (1) {
5420 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5421 next_hop, &pinfo);
5422 if (err == -ENOENT)
5423 break;
5424 if (err)
5425 goto out_err;
5426
5427 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5428 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5429 wdev->netdev, dst, next_hop,
5430 &pinfo) < 0)
5431 goto out;
5432
5433 path_idx++;
5434 }
5435
5436 out:
5437 cb->args[2] = path_idx;
5438 err = skb->len;
5439 out_err:
5440 rtnl_unlock();
5441 return err;
5442 }
5443
5444 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5445 {
5446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5447 int err;
5448 struct net_device *dev = info->user_ptr[1];
5449 struct mpath_info pinfo;
5450 struct sk_buff *msg;
5451 u8 *dst = NULL;
5452 u8 next_hop[ETH_ALEN];
5453
5454 memset(&pinfo, 0, sizeof(pinfo));
5455
5456 if (!info->attrs[NL80211_ATTR_MAC])
5457 return -EINVAL;
5458
5459 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5460
5461 if (!rdev->ops->get_mpath)
5462 return -EOPNOTSUPP;
5463
5464 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5465 return -EOPNOTSUPP;
5466
5467 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5468 if (err)
5469 return err;
5470
5471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5472 if (!msg)
5473 return -ENOMEM;
5474
5475 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5476 dev, dst, next_hop, &pinfo) < 0) {
5477 nlmsg_free(msg);
5478 return -ENOBUFS;
5479 }
5480
5481 return genlmsg_reply(msg, info);
5482 }
5483
5484 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5485 {
5486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5487 struct net_device *dev = info->user_ptr[1];
5488 u8 *dst = NULL;
5489 u8 *next_hop = NULL;
5490
5491 if (!info->attrs[NL80211_ATTR_MAC])
5492 return -EINVAL;
5493
5494 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5495 return -EINVAL;
5496
5497 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5498 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5499
5500 if (!rdev->ops->change_mpath)
5501 return -EOPNOTSUPP;
5502
5503 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5504 return -EOPNOTSUPP;
5505
5506 return rdev_change_mpath(rdev, dev, dst, next_hop);
5507 }
5508
5509 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5510 {
5511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5512 struct net_device *dev = info->user_ptr[1];
5513 u8 *dst = NULL;
5514 u8 *next_hop = NULL;
5515
5516 if (!info->attrs[NL80211_ATTR_MAC])
5517 return -EINVAL;
5518
5519 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5520 return -EINVAL;
5521
5522 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5523 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5524
5525 if (!rdev->ops->add_mpath)
5526 return -EOPNOTSUPP;
5527
5528 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5529 return -EOPNOTSUPP;
5530
5531 return rdev_add_mpath(rdev, dev, dst, next_hop);
5532 }
5533
5534 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5535 {
5536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5537 struct net_device *dev = info->user_ptr[1];
5538 u8 *dst = NULL;
5539
5540 if (info->attrs[NL80211_ATTR_MAC])
5541 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5542
5543 if (!rdev->ops->del_mpath)
5544 return -EOPNOTSUPP;
5545
5546 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5547 return -EOPNOTSUPP;
5548
5549 return rdev_del_mpath(rdev, dev, dst);
5550 }
5551
5552 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5553 {
5554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5555 int err;
5556 struct net_device *dev = info->user_ptr[1];
5557 struct mpath_info pinfo;
5558 struct sk_buff *msg;
5559 u8 *dst = NULL;
5560 u8 mpp[ETH_ALEN];
5561
5562 memset(&pinfo, 0, sizeof(pinfo));
5563
5564 if (!info->attrs[NL80211_ATTR_MAC])
5565 return -EINVAL;
5566
5567 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5568
5569 if (!rdev->ops->get_mpp)
5570 return -EOPNOTSUPP;
5571
5572 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5573 return -EOPNOTSUPP;
5574
5575 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5576 if (err)
5577 return err;
5578
5579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5580 if (!msg)
5581 return -ENOMEM;
5582
5583 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5584 dev, dst, mpp, &pinfo) < 0) {
5585 nlmsg_free(msg);
5586 return -ENOBUFS;
5587 }
5588
5589 return genlmsg_reply(msg, info);
5590 }
5591
5592 static int nl80211_dump_mpp(struct sk_buff *skb,
5593 struct netlink_callback *cb)
5594 {
5595 struct mpath_info pinfo;
5596 struct cfg80211_registered_device *rdev;
5597 struct wireless_dev *wdev;
5598 u8 dst[ETH_ALEN];
5599 u8 mpp[ETH_ALEN];
5600 int path_idx = cb->args[2];
5601 int err;
5602
5603 rtnl_lock();
5604 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5605 if (err)
5606 goto out_err;
5607
5608 if (!rdev->ops->dump_mpp) {
5609 err = -EOPNOTSUPP;
5610 goto out_err;
5611 }
5612
5613 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5614 err = -EOPNOTSUPP;
5615 goto out_err;
5616 }
5617
5618 while (1) {
5619 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5620 mpp, &pinfo);
5621 if (err == -ENOENT)
5622 break;
5623 if (err)
5624 goto out_err;
5625
5626 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5627 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5628 wdev->netdev, dst, mpp,
5629 &pinfo) < 0)
5630 goto out;
5631
5632 path_idx++;
5633 }
5634
5635 out:
5636 cb->args[2] = path_idx;
5637 err = skb->len;
5638 out_err:
5639 rtnl_unlock();
5640 return err;
5641 }
5642
5643 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5644 {
5645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5646 struct net_device *dev = info->user_ptr[1];
5647 struct wireless_dev *wdev = dev->ieee80211_ptr;
5648 struct bss_parameters params;
5649 int err;
5650
5651 memset(&params, 0, sizeof(params));
5652 /* default to not changing parameters */
5653 params.use_cts_prot = -1;
5654 params.use_short_preamble = -1;
5655 params.use_short_slot_time = -1;
5656 params.ap_isolate = -1;
5657 params.ht_opmode = -1;
5658 params.p2p_ctwindow = -1;
5659 params.p2p_opp_ps = -1;
5660
5661 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5662 params.use_cts_prot =
5663 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5664 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5665 params.use_short_preamble =
5666 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5667 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5668 params.use_short_slot_time =
5669 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5670 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5671 params.basic_rates =
5672 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5673 params.basic_rates_len =
5674 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5675 }
5676 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5677 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5678 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5679 params.ht_opmode =
5680 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5681
5682 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5683 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5684 return -EINVAL;
5685 params.p2p_ctwindow =
5686 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5687 if (params.p2p_ctwindow < 0)
5688 return -EINVAL;
5689 if (params.p2p_ctwindow != 0 &&
5690 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5691 return -EINVAL;
5692 }
5693
5694 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5695 u8 tmp;
5696
5697 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5698 return -EINVAL;
5699 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5700 if (tmp > 1)
5701 return -EINVAL;
5702 params.p2p_opp_ps = tmp;
5703 if (params.p2p_opp_ps &&
5704 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5705 return -EINVAL;
5706 }
5707
5708 if (!rdev->ops->change_bss)
5709 return -EOPNOTSUPP;
5710
5711 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5712 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5713 return -EOPNOTSUPP;
5714
5715 wdev_lock(wdev);
5716 err = rdev_change_bss(rdev, dev, &params);
5717 wdev_unlock(wdev);
5718
5719 return err;
5720 }
5721
5722 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5723 {
5724 char *data = NULL;
5725 bool is_indoor;
5726 enum nl80211_user_reg_hint_type user_reg_hint_type;
5727 u32 owner_nlportid;
5728
5729 /*
5730 * You should only get this when cfg80211 hasn't yet initialized
5731 * completely when built-in to the kernel right between the time
5732 * window between nl80211_init() and regulatory_init(), if that is
5733 * even possible.
5734 */
5735 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5736 return -EINPROGRESS;
5737
5738 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5739 user_reg_hint_type =
5740 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5741 else
5742 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5743
5744 switch (user_reg_hint_type) {
5745 case NL80211_USER_REG_HINT_USER:
5746 case NL80211_USER_REG_HINT_CELL_BASE:
5747 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5748 return -EINVAL;
5749
5750 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5751 return regulatory_hint_user(data, user_reg_hint_type);
5752 case NL80211_USER_REG_HINT_INDOOR:
5753 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5754 owner_nlportid = info->snd_portid;
5755 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5756 } else {
5757 owner_nlportid = 0;
5758 is_indoor = true;
5759 }
5760
5761 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5762 default:
5763 return -EINVAL;
5764 }
5765 }
5766
5767 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5768 {
5769 return reg_reload_regdb();
5770 }
5771
5772 static int nl80211_get_mesh_config(struct sk_buff *skb,
5773 struct genl_info *info)
5774 {
5775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5776 struct net_device *dev = info->user_ptr[1];
5777 struct wireless_dev *wdev = dev->ieee80211_ptr;
5778 struct mesh_config cur_params;
5779 int err = 0;
5780 void *hdr;
5781 struct nlattr *pinfoattr;
5782 struct sk_buff *msg;
5783
5784 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5785 return -EOPNOTSUPP;
5786
5787 if (!rdev->ops->get_mesh_config)
5788 return -EOPNOTSUPP;
5789
5790 wdev_lock(wdev);
5791 /* If not connected, get default parameters */
5792 if (!wdev->mesh_id_len)
5793 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5794 else
5795 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5796 wdev_unlock(wdev);
5797
5798 if (err)
5799 return err;
5800
5801 /* Draw up a netlink message to send back */
5802 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5803 if (!msg)
5804 return -ENOMEM;
5805 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5806 NL80211_CMD_GET_MESH_CONFIG);
5807 if (!hdr)
5808 goto out;
5809 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5810 if (!pinfoattr)
5811 goto nla_put_failure;
5812 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5813 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5814 cur_params.dot11MeshRetryTimeout) ||
5815 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5816 cur_params.dot11MeshConfirmTimeout) ||
5817 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5818 cur_params.dot11MeshHoldingTimeout) ||
5819 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5820 cur_params.dot11MeshMaxPeerLinks) ||
5821 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5822 cur_params.dot11MeshMaxRetries) ||
5823 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5824 cur_params.dot11MeshTTL) ||
5825 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5826 cur_params.element_ttl) ||
5827 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5828 cur_params.auto_open_plinks) ||
5829 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5830 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5831 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5832 cur_params.dot11MeshHWMPmaxPREQretries) ||
5833 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5834 cur_params.path_refresh_time) ||
5835 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5836 cur_params.min_discovery_timeout) ||
5837 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5838 cur_params.dot11MeshHWMPactivePathTimeout) ||
5839 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5840 cur_params.dot11MeshHWMPpreqMinInterval) ||
5841 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5842 cur_params.dot11MeshHWMPperrMinInterval) ||
5843 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5844 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5845 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5846 cur_params.dot11MeshHWMPRootMode) ||
5847 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5848 cur_params.dot11MeshHWMPRannInterval) ||
5849 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5850 cur_params.dot11MeshGateAnnouncementProtocol) ||
5851 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5852 cur_params.dot11MeshForwarding) ||
5853 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5854 cur_params.rssi_threshold) ||
5855 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5856 cur_params.ht_opmode) ||
5857 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5858 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5859 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5860 cur_params.dot11MeshHWMProotInterval) ||
5861 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5862 cur_params.dot11MeshHWMPconfirmationInterval) ||
5863 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5864 cur_params.power_mode) ||
5865 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5866 cur_params.dot11MeshAwakeWindowDuration) ||
5867 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5868 cur_params.plink_timeout))
5869 goto nla_put_failure;
5870 nla_nest_end(msg, pinfoattr);
5871 genlmsg_end(msg, hdr);
5872 return genlmsg_reply(msg, info);
5873
5874 nla_put_failure:
5875 genlmsg_cancel(msg, hdr);
5876 out:
5877 nlmsg_free(msg);
5878 return -ENOBUFS;
5879 }
5880
5881 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5882 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5883 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5884 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5885 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5886 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5887 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5888 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5889 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5890 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5891 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5892 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5893 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5894 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5895 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5896 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5897 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5898 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5899 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5900 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5901 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5902 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5903 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5904 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5905 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5906 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5907 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5908 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5909 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5910 };
5911
5912 static const struct nla_policy
5913 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5914 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5915 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5916 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5917 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5918 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5919 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5920 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5921 .len = IEEE80211_MAX_DATA_LEN },
5922 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5923 };
5924
5925 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5926 {
5927 u8 val = nla_get_u8(nla);
5928 if (val < min || val > max)
5929 return -EINVAL;
5930 *out = val;
5931 return 0;
5932 }
5933
5934 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5935 {
5936 u8 val = nla_get_u8(nla);
5937 if (val < min || val > max)
5938 return -EINVAL;
5939 *out = val;
5940 return 0;
5941 }
5942
5943 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5944 {
5945 u16 val = nla_get_u16(nla);
5946 if (val < min || val > max)
5947 return -EINVAL;
5948 *out = val;
5949 return 0;
5950 }
5951
5952 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5953 {
5954 u32 val = nla_get_u32(nla);
5955 if (val < min || val > max)
5956 return -EINVAL;
5957 *out = val;
5958 return 0;
5959 }
5960
5961 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5962 {
5963 s32 val = nla_get_s32(nla);
5964 if (val < min || val > max)
5965 return -EINVAL;
5966 *out = val;
5967 return 0;
5968 }
5969
5970 static int nl80211_check_power_mode(const struct nlattr *nla,
5971 enum nl80211_mesh_power_mode min,
5972 enum nl80211_mesh_power_mode max,
5973 enum nl80211_mesh_power_mode *out)
5974 {
5975 u32 val = nla_get_u32(nla);
5976 if (val < min || val > max)
5977 return -EINVAL;
5978 *out = val;
5979 return 0;
5980 }
5981
5982 static int nl80211_parse_mesh_config(struct genl_info *info,
5983 struct mesh_config *cfg,
5984 u32 *mask_out)
5985 {
5986 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5987 u32 mask = 0;
5988 u16 ht_opmode;
5989
5990 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5991 do { \
5992 if (tb[attr]) { \
5993 if (fn(tb[attr], min, max, &cfg->param)) \
5994 return -EINVAL; \
5995 mask |= (1 << (attr - 1)); \
5996 } \
5997 } while (0)
5998
5999 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6000 return -EINVAL;
6001 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6002 info->attrs[NL80211_ATTR_MESH_CONFIG],
6003 nl80211_meshconf_params_policy, info->extack))
6004 return -EINVAL;
6005
6006 /* This makes sure that there aren't more than 32 mesh config
6007 * parameters (otherwise our bitfield scheme would not work.) */
6008 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6009
6010 /* Fill in the params struct */
6011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6012 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6013 nl80211_check_u16);
6014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6015 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6016 nl80211_check_u16);
6017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6018 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6019 nl80211_check_u16);
6020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6021 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6022 nl80211_check_u16);
6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6024 mask, NL80211_MESHCONF_MAX_RETRIES,
6025 nl80211_check_u8);
6026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6027 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6028 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6029 mask, NL80211_MESHCONF_ELEMENT_TTL,
6030 nl80211_check_u8);
6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6032 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6033 nl80211_check_bool);
6034 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6035 1, 255, mask,
6036 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6037 nl80211_check_u32);
6038 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6039 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6040 nl80211_check_u8);
6041 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6042 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6043 nl80211_check_u32);
6044 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6045 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6046 nl80211_check_u16);
6047 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6048 1, 65535, mask,
6049 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6050 nl80211_check_u32);
6051 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6052 1, 65535, mask,
6053 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6054 nl80211_check_u16);
6055 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6056 1, 65535, mask,
6057 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6058 nl80211_check_u16);
6059 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6060 dot11MeshHWMPnetDiameterTraversalTime,
6061 1, 65535, mask,
6062 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6063 nl80211_check_u16);
6064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6065 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6066 nl80211_check_u8);
6067 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6068 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6069 nl80211_check_u16);
6070 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6071 dot11MeshGateAnnouncementProtocol, 0, 1,
6072 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6073 nl80211_check_bool);
6074 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6075 mask, NL80211_MESHCONF_FORWARDING,
6076 nl80211_check_bool);
6077 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6078 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6079 nl80211_check_s32);
6080 /*
6081 * Check HT operation mode based on
6082 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6083 */
6084 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6085 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6086
6087 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6088 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6089 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6090 return -EINVAL;
6091
6092 /* NON_HT_STA bit is reserved, but some programs set it */
6093 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6094
6095 cfg->ht_opmode = ht_opmode;
6096 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6097 }
6098 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6099 1, 65535, mask,
6100 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6101 nl80211_check_u32);
6102 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6103 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6104 nl80211_check_u16);
6105 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6106 dot11MeshHWMPconfirmationInterval,
6107 1, 65535, mask,
6108 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6109 nl80211_check_u16);
6110 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6111 NL80211_MESH_POWER_ACTIVE,
6112 NL80211_MESH_POWER_MAX,
6113 mask, NL80211_MESHCONF_POWER_MODE,
6114 nl80211_check_power_mode);
6115 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6116 0, 65535, mask,
6117 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6118 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6119 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6120 nl80211_check_u32);
6121 if (mask_out)
6122 *mask_out = mask;
6123
6124 return 0;
6125
6126 #undef FILL_IN_MESH_PARAM_IF_SET
6127 }
6128
6129 static int nl80211_parse_mesh_setup(struct genl_info *info,
6130 struct mesh_setup *setup)
6131 {
6132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6133 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6134
6135 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6136 return -EINVAL;
6137 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6138 info->attrs[NL80211_ATTR_MESH_SETUP],
6139 nl80211_mesh_setup_params_policy, info->extack))
6140 return -EINVAL;
6141
6142 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6143 setup->sync_method =
6144 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6145 IEEE80211_SYNC_METHOD_VENDOR :
6146 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6147
6148 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6149 setup->path_sel_proto =
6150 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6151 IEEE80211_PATH_PROTOCOL_VENDOR :
6152 IEEE80211_PATH_PROTOCOL_HWMP;
6153
6154 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6155 setup->path_metric =
6156 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6157 IEEE80211_PATH_METRIC_VENDOR :
6158 IEEE80211_PATH_METRIC_AIRTIME;
6159
6160 if (tb[NL80211_MESH_SETUP_IE]) {
6161 struct nlattr *ieattr =
6162 tb[NL80211_MESH_SETUP_IE];
6163 if (!is_valid_ie_attr(ieattr))
6164 return -EINVAL;
6165 setup->ie = nla_data(ieattr);
6166 setup->ie_len = nla_len(ieattr);
6167 }
6168 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6169 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6170 return -EINVAL;
6171 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6172 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6173 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6174 if (setup->is_secure)
6175 setup->user_mpm = true;
6176
6177 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6178 if (!setup->user_mpm)
6179 return -EINVAL;
6180 setup->auth_id =
6181 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6182 }
6183
6184 return 0;
6185 }
6186
6187 static int nl80211_update_mesh_config(struct sk_buff *skb,
6188 struct genl_info *info)
6189 {
6190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6191 struct net_device *dev = info->user_ptr[1];
6192 struct wireless_dev *wdev = dev->ieee80211_ptr;
6193 struct mesh_config cfg;
6194 u32 mask;
6195 int err;
6196
6197 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6198 return -EOPNOTSUPP;
6199
6200 if (!rdev->ops->update_mesh_config)
6201 return -EOPNOTSUPP;
6202
6203 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6204 if (err)
6205 return err;
6206
6207 wdev_lock(wdev);
6208 if (!wdev->mesh_id_len)
6209 err = -ENOLINK;
6210
6211 if (!err)
6212 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6213
6214 wdev_unlock(wdev);
6215
6216 return err;
6217 }
6218
6219 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6220 struct sk_buff *msg)
6221 {
6222 struct nlattr *nl_reg_rules;
6223 unsigned int i;
6224
6225 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6226 (regdom->dfs_region &&
6227 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6228 goto nla_put_failure;
6229
6230 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6231 if (!nl_reg_rules)
6232 goto nla_put_failure;
6233
6234 for (i = 0; i < regdom->n_reg_rules; i++) {
6235 struct nlattr *nl_reg_rule;
6236 const struct ieee80211_reg_rule *reg_rule;
6237 const struct ieee80211_freq_range *freq_range;
6238 const struct ieee80211_power_rule *power_rule;
6239 unsigned int max_bandwidth_khz;
6240
6241 reg_rule = &regdom->reg_rules[i];
6242 freq_range = &reg_rule->freq_range;
6243 power_rule = &reg_rule->power_rule;
6244
6245 nl_reg_rule = nla_nest_start(msg, i);
6246 if (!nl_reg_rule)
6247 goto nla_put_failure;
6248
6249 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6250 if (!max_bandwidth_khz)
6251 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6252 reg_rule);
6253
6254 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6255 reg_rule->flags) ||
6256 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6257 freq_range->start_freq_khz) ||
6258 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6259 freq_range->end_freq_khz) ||
6260 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6261 max_bandwidth_khz) ||
6262 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6263 power_rule->max_antenna_gain) ||
6264 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6265 power_rule->max_eirp) ||
6266 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6267 reg_rule->dfs_cac_ms))
6268 goto nla_put_failure;
6269
6270 nla_nest_end(msg, nl_reg_rule);
6271 }
6272
6273 nla_nest_end(msg, nl_reg_rules);
6274 return 0;
6275
6276 nla_put_failure:
6277 return -EMSGSIZE;
6278 }
6279
6280 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6281 {
6282 const struct ieee80211_regdomain *regdom = NULL;
6283 struct cfg80211_registered_device *rdev;
6284 struct wiphy *wiphy = NULL;
6285 struct sk_buff *msg;
6286 void *hdr;
6287
6288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6289 if (!msg)
6290 return -ENOBUFS;
6291
6292 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6293 NL80211_CMD_GET_REG);
6294 if (!hdr)
6295 goto put_failure;
6296
6297 if (info->attrs[NL80211_ATTR_WIPHY]) {
6298 bool self_managed;
6299
6300 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6301 if (IS_ERR(rdev)) {
6302 nlmsg_free(msg);
6303 return PTR_ERR(rdev);
6304 }
6305
6306 wiphy = &rdev->wiphy;
6307 self_managed = wiphy->regulatory_flags &
6308 REGULATORY_WIPHY_SELF_MANAGED;
6309 regdom = get_wiphy_regdom(wiphy);
6310
6311 /* a self-managed-reg device must have a private regdom */
6312 if (WARN_ON(!regdom && self_managed)) {
6313 nlmsg_free(msg);
6314 return -EINVAL;
6315 }
6316
6317 if (regdom &&
6318 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6319 goto nla_put_failure;
6320 }
6321
6322 if (!wiphy && reg_last_request_cell_base() &&
6323 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6324 NL80211_USER_REG_HINT_CELL_BASE))
6325 goto nla_put_failure;
6326
6327 rcu_read_lock();
6328
6329 if (!regdom)
6330 regdom = rcu_dereference(cfg80211_regdomain);
6331
6332 if (nl80211_put_regdom(regdom, msg))
6333 goto nla_put_failure_rcu;
6334
6335 rcu_read_unlock();
6336
6337 genlmsg_end(msg, hdr);
6338 return genlmsg_reply(msg, info);
6339
6340 nla_put_failure_rcu:
6341 rcu_read_unlock();
6342 nla_put_failure:
6343 genlmsg_cancel(msg, hdr);
6344 put_failure:
6345 nlmsg_free(msg);
6346 return -EMSGSIZE;
6347 }
6348
6349 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6350 u32 seq, int flags, struct wiphy *wiphy,
6351 const struct ieee80211_regdomain *regdom)
6352 {
6353 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6354 NL80211_CMD_GET_REG);
6355
6356 if (!hdr)
6357 return -1;
6358
6359 genl_dump_check_consistent(cb, hdr);
6360
6361 if (nl80211_put_regdom(regdom, msg))
6362 goto nla_put_failure;
6363
6364 if (!wiphy && reg_last_request_cell_base() &&
6365 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6366 NL80211_USER_REG_HINT_CELL_BASE))
6367 goto nla_put_failure;
6368
6369 if (wiphy &&
6370 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6371 goto nla_put_failure;
6372
6373 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6374 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6375 goto nla_put_failure;
6376
6377 genlmsg_end(msg, hdr);
6378 return 0;
6379
6380 nla_put_failure:
6381 genlmsg_cancel(msg, hdr);
6382 return -EMSGSIZE;
6383 }
6384
6385 static int nl80211_get_reg_dump(struct sk_buff *skb,
6386 struct netlink_callback *cb)
6387 {
6388 const struct ieee80211_regdomain *regdom = NULL;
6389 struct cfg80211_registered_device *rdev;
6390 int err, reg_idx, start = cb->args[2];
6391
6392 rtnl_lock();
6393
6394 if (cfg80211_regdomain && start == 0) {
6395 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6396 NLM_F_MULTI, NULL,
6397 rtnl_dereference(cfg80211_regdomain));
6398 if (err < 0)
6399 goto out_err;
6400 }
6401
6402 /* the global regdom is idx 0 */
6403 reg_idx = 1;
6404 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6405 regdom = get_wiphy_regdom(&rdev->wiphy);
6406 if (!regdom)
6407 continue;
6408
6409 if (++reg_idx <= start)
6410 continue;
6411
6412 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6413 NLM_F_MULTI, &rdev->wiphy, regdom);
6414 if (err < 0) {
6415 reg_idx--;
6416 break;
6417 }
6418 }
6419
6420 cb->args[2] = reg_idx;
6421 err = skb->len;
6422 out_err:
6423 rtnl_unlock();
6424 return err;
6425 }
6426
6427 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6428 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6429 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6430 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6431 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6432 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6433 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6434 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6435 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6436 };
6437
6438 static int parse_reg_rule(struct nlattr *tb[],
6439 struct ieee80211_reg_rule *reg_rule)
6440 {
6441 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6442 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6443
6444 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6445 return -EINVAL;
6446 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6447 return -EINVAL;
6448 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6449 return -EINVAL;
6450 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6451 return -EINVAL;
6452 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6453 return -EINVAL;
6454
6455 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6456
6457 freq_range->start_freq_khz =
6458 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6459 freq_range->end_freq_khz =
6460 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6461 freq_range->max_bandwidth_khz =
6462 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6463
6464 power_rule->max_eirp =
6465 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6466
6467 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6468 power_rule->max_antenna_gain =
6469 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6470
6471 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6472 reg_rule->dfs_cac_ms =
6473 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6474
6475 return 0;
6476 }
6477
6478 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6479 {
6480 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6481 struct nlattr *nl_reg_rule;
6482 char *alpha2;
6483 int rem_reg_rules, r;
6484 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6485 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6486 struct ieee80211_regdomain *rd;
6487
6488 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6489 return -EINVAL;
6490
6491 if (!info->attrs[NL80211_ATTR_REG_RULES])
6492 return -EINVAL;
6493
6494 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6495
6496 if (info->attrs[NL80211_ATTR_DFS_REGION])
6497 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6498
6499 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6500 rem_reg_rules) {
6501 num_rules++;
6502 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6503 return -EINVAL;
6504 }
6505
6506 if (!reg_is_valid_request(alpha2))
6507 return -EINVAL;
6508
6509 size_of_regd = sizeof(struct ieee80211_regdomain) +
6510 num_rules * sizeof(struct ieee80211_reg_rule);
6511
6512 rd = kzalloc(size_of_regd, GFP_KERNEL);
6513 if (!rd)
6514 return -ENOMEM;
6515
6516 rd->n_reg_rules = num_rules;
6517 rd->alpha2[0] = alpha2[0];
6518 rd->alpha2[1] = alpha2[1];
6519
6520 /*
6521 * Disable DFS master mode if the DFS region was
6522 * not supported or known on this kernel.
6523 */
6524 if (reg_supported_dfs_region(dfs_region))
6525 rd->dfs_region = dfs_region;
6526
6527 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6528 rem_reg_rules) {
6529 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6530 nl_reg_rule, reg_rule_policy,
6531 info->extack);
6532 if (r)
6533 goto bad_reg;
6534 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6535 if (r)
6536 goto bad_reg;
6537
6538 rule_idx++;
6539
6540 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6541 r = -EINVAL;
6542 goto bad_reg;
6543 }
6544 }
6545
6546 /* set_regdom takes ownership of rd */
6547 return set_regdom(rd, REGD_SOURCE_CRDA);
6548 bad_reg:
6549 kfree(rd);
6550 return r;
6551 }
6552 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6553
6554 static int validate_scan_freqs(struct nlattr *freqs)
6555 {
6556 struct nlattr *attr1, *attr2;
6557 int n_channels = 0, tmp1, tmp2;
6558
6559 nla_for_each_nested(attr1, freqs, tmp1)
6560 if (nla_len(attr1) != sizeof(u32))
6561 return 0;
6562
6563 nla_for_each_nested(attr1, freqs, tmp1) {
6564 n_channels++;
6565 /*
6566 * Some hardware has a limited channel list for
6567 * scanning, and it is pretty much nonsensical
6568 * to scan for a channel twice, so disallow that
6569 * and don't require drivers to check that the
6570 * channel list they get isn't longer than what
6571 * they can scan, as long as they can scan all
6572 * the channels they registered at once.
6573 */
6574 nla_for_each_nested(attr2, freqs, tmp2)
6575 if (attr1 != attr2 &&
6576 nla_get_u32(attr1) == nla_get_u32(attr2))
6577 return 0;
6578 }
6579
6580 return n_channels;
6581 }
6582
6583 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6584 {
6585 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6586 }
6587
6588 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6589 struct cfg80211_bss_selection *bss_select)
6590 {
6591 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6592 struct nlattr *nest;
6593 int err;
6594 bool found = false;
6595 int i;
6596
6597 /* only process one nested attribute */
6598 nest = nla_data(nla);
6599 if (!nla_ok(nest, nla_len(nest)))
6600 return -EINVAL;
6601
6602 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6603 nl80211_bss_select_policy, NULL);
6604 if (err)
6605 return err;
6606
6607 /* only one attribute may be given */
6608 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6609 if (attr[i]) {
6610 if (found)
6611 return -EINVAL;
6612 found = true;
6613 }
6614 }
6615
6616 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6617
6618 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6619 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6620
6621 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6622 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6623 bss_select->param.band_pref =
6624 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6625 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6626 return -EINVAL;
6627 }
6628
6629 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6630 struct nl80211_bss_select_rssi_adjust *adj_param;
6631
6632 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6633 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6634 bss_select->param.adjust.band = adj_param->band;
6635 bss_select->param.adjust.delta = adj_param->delta;
6636 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6637 return -EINVAL;
6638 }
6639
6640 /* user-space did not provide behaviour attribute */
6641 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6642 return -EINVAL;
6643
6644 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6645 return -EINVAL;
6646
6647 return 0;
6648 }
6649
6650 static int nl80211_parse_random_mac(struct nlattr **attrs,
6651 u8 *mac_addr, u8 *mac_addr_mask)
6652 {
6653 int i;
6654
6655 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6656 eth_zero_addr(mac_addr);
6657 eth_zero_addr(mac_addr_mask);
6658 mac_addr[0] = 0x2;
6659 mac_addr_mask[0] = 0x3;
6660
6661 return 0;
6662 }
6663
6664 /* need both or none */
6665 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6666 return -EINVAL;
6667
6668 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6669 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6670
6671 /* don't allow or configure an mcast address */
6672 if (!is_multicast_ether_addr(mac_addr_mask) ||
6673 is_multicast_ether_addr(mac_addr))
6674 return -EINVAL;
6675
6676 /*
6677 * allow users to pass a MAC address that has bits set outside
6678 * of the mask, but don't bother drivers with having to deal
6679 * with such bits
6680 */
6681 for (i = 0; i < ETH_ALEN; i++)
6682 mac_addr[i] &= mac_addr_mask[i];
6683
6684 return 0;
6685 }
6686
6687 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6688 {
6689 ASSERT_WDEV_LOCK(wdev);
6690
6691 if (!cfg80211_beaconing_iface_active(wdev))
6692 return true;
6693
6694 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6695 return true;
6696
6697 return regulatory_pre_cac_allowed(wdev->wiphy);
6698 }
6699
6700 static int
6701 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6702 void *request, struct nlattr **attrs,
6703 bool is_sched_scan)
6704 {
6705 u8 *mac_addr, *mac_addr_mask;
6706 u32 *flags;
6707 enum nl80211_feature_flags randomness_flag;
6708
6709 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6710 return 0;
6711
6712 if (is_sched_scan) {
6713 struct cfg80211_sched_scan_request *req = request;
6714
6715 randomness_flag = wdev ?
6716 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6717 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6718 flags = &req->flags;
6719 mac_addr = req->mac_addr;
6720 mac_addr_mask = req->mac_addr_mask;
6721 } else {
6722 struct cfg80211_scan_request *req = request;
6723
6724 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6725 flags = &req->flags;
6726 mac_addr = req->mac_addr;
6727 mac_addr_mask = req->mac_addr_mask;
6728 }
6729
6730 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6731
6732 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6733 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6734 return -EOPNOTSUPP;
6735
6736 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6737 int err;
6738
6739 if (!(wiphy->features & randomness_flag) ||
6740 (wdev && wdev->current_bss))
6741 return -EOPNOTSUPP;
6742
6743 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6744 if (err)
6745 return err;
6746 }
6747
6748 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6749 !wiphy_ext_feature_isset(wiphy,
6750 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6751 return -EOPNOTSUPP;
6752
6753 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6754 !wiphy_ext_feature_isset(wiphy,
6755 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6756 return -EOPNOTSUPP;
6757
6758 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6759 !wiphy_ext_feature_isset(wiphy,
6760 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6761 return -EOPNOTSUPP;
6762
6763 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6764 !wiphy_ext_feature_isset(wiphy,
6765 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6766 return -EOPNOTSUPP;
6767
6768 return 0;
6769 }
6770
6771 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6772 {
6773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6774 struct wireless_dev *wdev = info->user_ptr[1];
6775 struct cfg80211_scan_request *request;
6776 struct nlattr *attr;
6777 struct wiphy *wiphy;
6778 int err, tmp, n_ssids = 0, n_channels, i;
6779 size_t ie_len;
6780
6781 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6782 return -EINVAL;
6783
6784 wiphy = &rdev->wiphy;
6785
6786 if (wdev->iftype == NL80211_IFTYPE_NAN)
6787 return -EOPNOTSUPP;
6788
6789 if (!rdev->ops->scan)
6790 return -EOPNOTSUPP;
6791
6792 if (rdev->scan_req || rdev->scan_msg) {
6793 err = -EBUSY;
6794 goto unlock;
6795 }
6796
6797 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6798 n_channels = validate_scan_freqs(
6799 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6800 if (!n_channels) {
6801 err = -EINVAL;
6802 goto unlock;
6803 }
6804 } else {
6805 n_channels = ieee80211_get_num_supported_channels(wiphy);
6806 }
6807
6808 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6809 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6810 n_ssids++;
6811
6812 if (n_ssids > wiphy->max_scan_ssids) {
6813 err = -EINVAL;
6814 goto unlock;
6815 }
6816
6817 if (info->attrs[NL80211_ATTR_IE])
6818 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6819 else
6820 ie_len = 0;
6821
6822 if (ie_len > wiphy->max_scan_ie_len) {
6823 err = -EINVAL;
6824 goto unlock;
6825 }
6826
6827 request = kzalloc(sizeof(*request)
6828 + sizeof(*request->ssids) * n_ssids
6829 + sizeof(*request->channels) * n_channels
6830 + ie_len, GFP_KERNEL);
6831 if (!request) {
6832 err = -ENOMEM;
6833 goto unlock;
6834 }
6835
6836 if (n_ssids)
6837 request->ssids = (void *)&request->channels[n_channels];
6838 request->n_ssids = n_ssids;
6839 if (ie_len) {
6840 if (n_ssids)
6841 request->ie = (void *)(request->ssids + n_ssids);
6842 else
6843 request->ie = (void *)(request->channels + n_channels);
6844 }
6845
6846 i = 0;
6847 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6848 /* user specified, bail out if channel not found */
6849 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6850 struct ieee80211_channel *chan;
6851
6852 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6853
6854 if (!chan) {
6855 err = -EINVAL;
6856 goto out_free;
6857 }
6858
6859 /* ignore disabled channels */
6860 if (chan->flags & IEEE80211_CHAN_DISABLED)
6861 continue;
6862
6863 request->channels[i] = chan;
6864 i++;
6865 }
6866 } else {
6867 enum nl80211_band band;
6868
6869 /* all channels */
6870 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6871 int j;
6872
6873 if (!wiphy->bands[band])
6874 continue;
6875 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6876 struct ieee80211_channel *chan;
6877
6878 chan = &wiphy->bands[band]->channels[j];
6879
6880 if (chan->flags & IEEE80211_CHAN_DISABLED)
6881 continue;
6882
6883 request->channels[i] = chan;
6884 i++;
6885 }
6886 }
6887 }
6888
6889 if (!i) {
6890 err = -EINVAL;
6891 goto out_free;
6892 }
6893
6894 request->n_channels = i;
6895
6896 wdev_lock(wdev);
6897 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6898 struct ieee80211_channel *chan;
6899
6900 if (request->n_channels != 1) {
6901 wdev_unlock(wdev);
6902 err = -EBUSY;
6903 goto out_free;
6904 }
6905
6906 chan = request->channels[0];
6907 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6908 wdev_unlock(wdev);
6909 err = -EBUSY;
6910 goto out_free;
6911 }
6912 }
6913 wdev_unlock(wdev);
6914
6915 i = 0;
6916 if (n_ssids) {
6917 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6918 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6919 err = -EINVAL;
6920 goto out_free;
6921 }
6922 request->ssids[i].ssid_len = nla_len(attr);
6923 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6924 i++;
6925 }
6926 }
6927
6928 if (info->attrs[NL80211_ATTR_IE]) {
6929 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6930 memcpy((void *)request->ie,
6931 nla_data(info->attrs[NL80211_ATTR_IE]),
6932 request->ie_len);
6933 }
6934
6935 for (i = 0; i < NUM_NL80211_BANDS; i++)
6936 if (wiphy->bands[i])
6937 request->rates[i] =
6938 (1 << wiphy->bands[i]->n_bitrates) - 1;
6939
6940 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6941 nla_for_each_nested(attr,
6942 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6943 tmp) {
6944 enum nl80211_band band = nla_type(attr);
6945
6946 if (band < 0 || band >= NUM_NL80211_BANDS) {
6947 err = -EINVAL;
6948 goto out_free;
6949 }
6950
6951 if (!wiphy->bands[band])
6952 continue;
6953
6954 err = ieee80211_get_ratemask(wiphy->bands[band],
6955 nla_data(attr),
6956 nla_len(attr),
6957 &request->rates[band]);
6958 if (err)
6959 goto out_free;
6960 }
6961 }
6962
6963 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6964 if (!wiphy_ext_feature_isset(wiphy,
6965 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6966 err = -EOPNOTSUPP;
6967 goto out_free;
6968 }
6969
6970 request->duration =
6971 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6972 request->duration_mandatory =
6973 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6974 }
6975
6976 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6977 false);
6978 if (err)
6979 goto out_free;
6980
6981 request->no_cck =
6982 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6983
6984 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6985 * BSSID to scan for. This was problematic because that same attribute
6986 * was already used for another purpose (local random MAC address). The
6987 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6988 * compatibility with older userspace components, also use the
6989 * NL80211_ATTR_MAC value here if it can be determined to be used for
6990 * the specific BSSID use case instead of the random MAC address
6991 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6992 */
6993 if (info->attrs[NL80211_ATTR_BSSID])
6994 memcpy(request->bssid,
6995 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6996 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6997 info->attrs[NL80211_ATTR_MAC])
6998 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6999 ETH_ALEN);
7000 else
7001 eth_broadcast_addr(request->bssid);
7002
7003 request->wdev = wdev;
7004 request->wiphy = &rdev->wiphy;
7005 request->scan_start = jiffies;
7006
7007 rdev->scan_req = request;
7008 err = rdev_scan(rdev, request);
7009
7010 if (!err) {
7011 nl80211_send_scan_start(rdev, wdev);
7012 if (wdev->netdev)
7013 dev_hold(wdev->netdev);
7014 } else {
7015 out_free:
7016 rdev->scan_req = NULL;
7017 kfree(request);
7018 }
7019
7020 unlock:
7021 return err;
7022 }
7023
7024 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7025 {
7026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7027 struct wireless_dev *wdev = info->user_ptr[1];
7028
7029 if (!rdev->ops->abort_scan)
7030 return -EOPNOTSUPP;
7031
7032 if (rdev->scan_msg)
7033 return 0;
7034
7035 if (!rdev->scan_req)
7036 return -ENOENT;
7037
7038 rdev_abort_scan(rdev, wdev);
7039 return 0;
7040 }
7041
7042 static int
7043 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7044 struct cfg80211_sched_scan_request *request,
7045 struct nlattr **attrs)
7046 {
7047 int tmp, err, i = 0;
7048 struct nlattr *attr;
7049
7050 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7051 u32 interval;
7052
7053 /*
7054 * If scan plans are not specified,
7055 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7056 * case one scan plan will be set with the specified scan
7057 * interval and infinite number of iterations.
7058 */
7059 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7060 if (!interval)
7061 return -EINVAL;
7062
7063 request->scan_plans[0].interval =
7064 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7065 if (!request->scan_plans[0].interval)
7066 return -EINVAL;
7067
7068 if (request->scan_plans[0].interval >
7069 wiphy->max_sched_scan_plan_interval)
7070 request->scan_plans[0].interval =
7071 wiphy->max_sched_scan_plan_interval;
7072
7073 return 0;
7074 }
7075
7076 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7077 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7078
7079 if (WARN_ON(i >= n_plans))
7080 return -EINVAL;
7081
7082 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7083 attr, nl80211_plan_policy, NULL);
7084 if (err)
7085 return err;
7086
7087 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7088 return -EINVAL;
7089
7090 request->scan_plans[i].interval =
7091 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7092 if (!request->scan_plans[i].interval ||
7093 request->scan_plans[i].interval >
7094 wiphy->max_sched_scan_plan_interval)
7095 return -EINVAL;
7096
7097 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7098 request->scan_plans[i].iterations =
7099 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7100 if (!request->scan_plans[i].iterations ||
7101 (request->scan_plans[i].iterations >
7102 wiphy->max_sched_scan_plan_iterations))
7103 return -EINVAL;
7104 } else if (i < n_plans - 1) {
7105 /*
7106 * All scan plans but the last one must specify
7107 * a finite number of iterations
7108 */
7109 return -EINVAL;
7110 }
7111
7112 i++;
7113 }
7114
7115 /*
7116 * The last scan plan must not specify the number of
7117 * iterations, it is supposed to run infinitely
7118 */
7119 if (request->scan_plans[n_plans - 1].iterations)
7120 return -EINVAL;
7121
7122 return 0;
7123 }
7124
7125 static struct cfg80211_sched_scan_request *
7126 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7127 struct nlattr **attrs, int max_match_sets)
7128 {
7129 struct cfg80211_sched_scan_request *request;
7130 struct nlattr *attr;
7131 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7132 enum nl80211_band band;
7133 size_t ie_len;
7134 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7135 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7136
7137 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7138 return ERR_PTR(-EINVAL);
7139
7140 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7141 n_channels = validate_scan_freqs(
7142 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7143 if (!n_channels)
7144 return ERR_PTR(-EINVAL);
7145 } else {
7146 n_channels = ieee80211_get_num_supported_channels(wiphy);
7147 }
7148
7149 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7150 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7151 tmp)
7152 n_ssids++;
7153
7154 if (n_ssids > wiphy->max_sched_scan_ssids)
7155 return ERR_PTR(-EINVAL);
7156
7157 /*
7158 * First, count the number of 'real' matchsets. Due to an issue with
7159 * the old implementation, matchsets containing only the RSSI attribute
7160 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7161 * RSSI for all matchsets, rather than their own matchset for reporting
7162 * all APs with a strong RSSI. This is needed to be compatible with
7163 * older userspace that treated a matchset with only the RSSI as the
7164 * global RSSI for all other matchsets - if there are other matchsets.
7165 */
7166 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7167 nla_for_each_nested(attr,
7168 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7169 tmp) {
7170 struct nlattr *rssi;
7171
7172 err = nla_parse_nested(tb,
7173 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7174 attr, nl80211_match_policy,
7175 NULL);
7176 if (err)
7177 return ERR_PTR(err);
7178
7179 /* SSID and BSSID are mutually exclusive */
7180 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7181 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7182 return ERR_PTR(-EINVAL);
7183
7184 /* add other standalone attributes here */
7185 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7186 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7187 n_match_sets++;
7188 continue;
7189 }
7190 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7191 if (rssi)
7192 default_match_rssi = nla_get_s32(rssi);
7193 }
7194 }
7195
7196 /* However, if there's no other matchset, add the RSSI one */
7197 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7198 n_match_sets = 1;
7199
7200 if (n_match_sets > max_match_sets)
7201 return ERR_PTR(-EINVAL);
7202
7203 if (attrs[NL80211_ATTR_IE])
7204 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7205 else
7206 ie_len = 0;
7207
7208 if (ie_len > wiphy->max_sched_scan_ie_len)
7209 return ERR_PTR(-EINVAL);
7210
7211 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7212 /*
7213 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7214 * each scan plan already specifies its own interval
7215 */
7216 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7217 return ERR_PTR(-EINVAL);
7218
7219 nla_for_each_nested(attr,
7220 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7221 n_plans++;
7222 } else {
7223 /*
7224 * The scan interval attribute is kept for backward
7225 * compatibility. If no scan plans are specified and sched scan
7226 * interval is specified, one scan plan will be set with this
7227 * scan interval and infinite number of iterations.
7228 */
7229 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7230 return ERR_PTR(-EINVAL);
7231
7232 n_plans = 1;
7233 }
7234
7235 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7236 return ERR_PTR(-EINVAL);
7237
7238 if (!wiphy_ext_feature_isset(
7239 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7240 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7241 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7242 return ERR_PTR(-EINVAL);
7243
7244 request = kzalloc(sizeof(*request)
7245 + sizeof(*request->ssids) * n_ssids
7246 + sizeof(*request->match_sets) * n_match_sets
7247 + sizeof(*request->scan_plans) * n_plans
7248 + sizeof(*request->channels) * n_channels
7249 + ie_len, GFP_KERNEL);
7250 if (!request)
7251 return ERR_PTR(-ENOMEM);
7252
7253 if (n_ssids)
7254 request->ssids = (void *)&request->channels[n_channels];
7255 request->n_ssids = n_ssids;
7256 if (ie_len) {
7257 if (n_ssids)
7258 request->ie = (void *)(request->ssids + n_ssids);
7259 else
7260 request->ie = (void *)(request->channels + n_channels);
7261 }
7262
7263 if (n_match_sets) {
7264 if (request->ie)
7265 request->match_sets = (void *)(request->ie + ie_len);
7266 else if (n_ssids)
7267 request->match_sets =
7268 (void *)(request->ssids + n_ssids);
7269 else
7270 request->match_sets =
7271 (void *)(request->channels + n_channels);
7272 }
7273 request->n_match_sets = n_match_sets;
7274
7275 if (n_match_sets)
7276 request->scan_plans = (void *)(request->match_sets +
7277 n_match_sets);
7278 else if (request->ie)
7279 request->scan_plans = (void *)(request->ie + ie_len);
7280 else if (n_ssids)
7281 request->scan_plans = (void *)(request->ssids + n_ssids);
7282 else
7283 request->scan_plans = (void *)(request->channels + n_channels);
7284
7285 request->n_scan_plans = n_plans;
7286
7287 i = 0;
7288 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7289 /* user specified, bail out if channel not found */
7290 nla_for_each_nested(attr,
7291 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7292 tmp) {
7293 struct ieee80211_channel *chan;
7294
7295 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7296
7297 if (!chan) {
7298 err = -EINVAL;
7299 goto out_free;
7300 }
7301
7302 /* ignore disabled channels */
7303 if (chan->flags & IEEE80211_CHAN_DISABLED)
7304 continue;
7305
7306 request->channels[i] = chan;
7307 i++;
7308 }
7309 } else {
7310 /* all channels */
7311 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7312 int j;
7313
7314 if (!wiphy->bands[band])
7315 continue;
7316 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7317 struct ieee80211_channel *chan;
7318
7319 chan = &wiphy->bands[band]->channels[j];
7320
7321 if (chan->flags & IEEE80211_CHAN_DISABLED)
7322 continue;
7323
7324 request->channels[i] = chan;
7325 i++;
7326 }
7327 }
7328 }
7329
7330 if (!i) {
7331 err = -EINVAL;
7332 goto out_free;
7333 }
7334
7335 request->n_channels = i;
7336
7337 i = 0;
7338 if (n_ssids) {
7339 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7340 tmp) {
7341 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7342 err = -EINVAL;
7343 goto out_free;
7344 }
7345 request->ssids[i].ssid_len = nla_len(attr);
7346 memcpy(request->ssids[i].ssid, nla_data(attr),
7347 nla_len(attr));
7348 i++;
7349 }
7350 }
7351
7352 i = 0;
7353 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7354 nla_for_each_nested(attr,
7355 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7356 tmp) {
7357 struct nlattr *ssid, *bssid, *rssi;
7358
7359 err = nla_parse_nested(tb,
7360 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7361 attr, nl80211_match_policy,
7362 NULL);
7363 if (err)
7364 goto out_free;
7365 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7366 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7367 if (ssid || bssid) {
7368 if (WARN_ON(i >= n_match_sets)) {
7369 /* this indicates a programming error,
7370 * the loop above should have verified
7371 * things properly
7372 */
7373 err = -EINVAL;
7374 goto out_free;
7375 }
7376
7377 if (ssid) {
7378 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7379 err = -EINVAL;
7380 goto out_free;
7381 }
7382 memcpy(request->match_sets[i].ssid.ssid,
7383 nla_data(ssid), nla_len(ssid));
7384 request->match_sets[i].ssid.ssid_len =
7385 nla_len(ssid);
7386 }
7387 if (bssid) {
7388 if (nla_len(bssid) != ETH_ALEN) {
7389 err = -EINVAL;
7390 goto out_free;
7391 }
7392 memcpy(request->match_sets[i].bssid,
7393 nla_data(bssid), ETH_ALEN);
7394 }
7395
7396 /* special attribute - old implementation w/a */
7397 request->match_sets[i].rssi_thold =
7398 default_match_rssi;
7399 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7400 if (rssi)
7401 request->match_sets[i].rssi_thold =
7402 nla_get_s32(rssi);
7403 }
7404 i++;
7405 }
7406
7407 /* there was no other matchset, so the RSSI one is alone */
7408 if (i == 0 && n_match_sets)
7409 request->match_sets[0].rssi_thold = default_match_rssi;
7410
7411 request->min_rssi_thold = INT_MAX;
7412 for (i = 0; i < n_match_sets; i++)
7413 request->min_rssi_thold =
7414 min(request->match_sets[i].rssi_thold,
7415 request->min_rssi_thold);
7416 } else {
7417 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7418 }
7419
7420 if (ie_len) {
7421 request->ie_len = ie_len;
7422 memcpy((void *)request->ie,
7423 nla_data(attrs[NL80211_ATTR_IE]),
7424 request->ie_len);
7425 }
7426
7427 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7428 if (err)
7429 goto out_free;
7430
7431 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7432 request->delay =
7433 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7434
7435 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7436 request->relative_rssi = nla_get_s8(
7437 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7438 request->relative_rssi_set = true;
7439 }
7440
7441 if (request->relative_rssi_set &&
7442 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7443 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7444
7445 rssi_adjust = nla_data(
7446 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7447 request->rssi_adjust.band = rssi_adjust->band;
7448 request->rssi_adjust.delta = rssi_adjust->delta;
7449 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7450 err = -EINVAL;
7451 goto out_free;
7452 }
7453 }
7454
7455 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7456 if (err)
7457 goto out_free;
7458
7459 request->scan_start = jiffies;
7460
7461 return request;
7462
7463 out_free:
7464 kfree(request);
7465 return ERR_PTR(err);
7466 }
7467
7468 static int nl80211_start_sched_scan(struct sk_buff *skb,
7469 struct genl_info *info)
7470 {
7471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7472 struct net_device *dev = info->user_ptr[1];
7473 struct wireless_dev *wdev = dev->ieee80211_ptr;
7474 struct cfg80211_sched_scan_request *sched_scan_req;
7475 bool want_multi;
7476 int err;
7477
7478 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7479 return -EOPNOTSUPP;
7480
7481 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7482 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7483 if (err)
7484 return err;
7485
7486 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7487 info->attrs,
7488 rdev->wiphy.max_match_sets);
7489
7490 err = PTR_ERR_OR_ZERO(sched_scan_req);
7491 if (err)
7492 goto out_err;
7493
7494 /* leave request id zero for legacy request
7495 * or if driver does not support multi-scheduled scan
7496 */
7497 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7498 while (!sched_scan_req->reqid)
7499 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7500 }
7501
7502 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7503 if (err)
7504 goto out_free;
7505
7506 sched_scan_req->dev = dev;
7507 sched_scan_req->wiphy = &rdev->wiphy;
7508
7509 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7510 sched_scan_req->owner_nlportid = info->snd_portid;
7511
7512 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7513
7514 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7515 return 0;
7516
7517 out_free:
7518 kfree(sched_scan_req);
7519 out_err:
7520 return err;
7521 }
7522
7523 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7524 struct genl_info *info)
7525 {
7526 struct cfg80211_sched_scan_request *req;
7527 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7528 u64 cookie;
7529
7530 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7531 return -EOPNOTSUPP;
7532
7533 if (info->attrs[NL80211_ATTR_COOKIE]) {
7534 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7535 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7536 }
7537
7538 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7539 struct cfg80211_sched_scan_request,
7540 list);
7541 if (!req || req->reqid ||
7542 (req->owner_nlportid &&
7543 req->owner_nlportid != info->snd_portid))
7544 return -ENOENT;
7545
7546 return cfg80211_stop_sched_scan_req(rdev, req, false);
7547 }
7548
7549 static int nl80211_start_radar_detection(struct sk_buff *skb,
7550 struct genl_info *info)
7551 {
7552 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7553 struct net_device *dev = info->user_ptr[1];
7554 struct wireless_dev *wdev = dev->ieee80211_ptr;
7555 struct cfg80211_chan_def chandef;
7556 enum nl80211_dfs_regions dfs_region;
7557 unsigned int cac_time_ms;
7558 int err;
7559
7560 dfs_region = reg_get_dfs_region(wdev->wiphy);
7561 if (dfs_region == NL80211_DFS_UNSET)
7562 return -EINVAL;
7563
7564 err = nl80211_parse_chandef(rdev, info, &chandef);
7565 if (err)
7566 return err;
7567
7568 if (netif_carrier_ok(dev))
7569 return -EBUSY;
7570
7571 if (wdev->cac_started)
7572 return -EBUSY;
7573
7574 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7575 wdev->iftype);
7576 if (err < 0)
7577 return err;
7578
7579 if (err == 0)
7580 return -EINVAL;
7581
7582 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7583 return -EINVAL;
7584
7585 if (!rdev->ops->start_radar_detection)
7586 return -EOPNOTSUPP;
7587
7588 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7589 if (WARN_ON(!cac_time_ms))
7590 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7591
7592 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7593 if (!err) {
7594 wdev->chandef = chandef;
7595 wdev->cac_started = true;
7596 wdev->cac_start_time = jiffies;
7597 wdev->cac_time_ms = cac_time_ms;
7598 }
7599 return err;
7600 }
7601
7602 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7603 {
7604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7605 struct net_device *dev = info->user_ptr[1];
7606 struct wireless_dev *wdev = dev->ieee80211_ptr;
7607 struct cfg80211_csa_settings params;
7608 /* csa_attrs is defined static to avoid waste of stack size - this
7609 * function is called under RTNL lock, so this should not be a problem.
7610 */
7611 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7612 int err;
7613 bool need_new_beacon = false;
7614 bool need_handle_dfs_flag = true;
7615 int len, i;
7616 u32 cs_count;
7617
7618 if (!rdev->ops->channel_switch ||
7619 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7620 return -EOPNOTSUPP;
7621
7622 switch (dev->ieee80211_ptr->iftype) {
7623 case NL80211_IFTYPE_AP:
7624 case NL80211_IFTYPE_P2P_GO:
7625 need_new_beacon = true;
7626 /* For all modes except AP the handle_dfs flag needs to be
7627 * supplied to tell the kernel that userspace will handle radar
7628 * events when they happen. Otherwise a switch to a channel
7629 * requiring DFS will be rejected.
7630 */
7631 need_handle_dfs_flag = false;
7632
7633 /* useless if AP is not running */
7634 if (!wdev->beacon_interval)
7635 return -ENOTCONN;
7636 break;
7637 case NL80211_IFTYPE_ADHOC:
7638 if (!wdev->ssid_len)
7639 return -ENOTCONN;
7640 break;
7641 case NL80211_IFTYPE_MESH_POINT:
7642 if (!wdev->mesh_id_len)
7643 return -ENOTCONN;
7644 break;
7645 default:
7646 return -EOPNOTSUPP;
7647 }
7648
7649 memset(&params, 0, sizeof(params));
7650
7651 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7652 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7653 return -EINVAL;
7654
7655 /* only important for AP, IBSS and mesh create IEs internally */
7656 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7657 return -EINVAL;
7658
7659 /* Even though the attribute is u32, the specification says
7660 * u8, so let's make sure we don't overflow.
7661 */
7662 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7663 if (cs_count > 255)
7664 return -EINVAL;
7665
7666 params.count = cs_count;
7667
7668 if (!need_new_beacon)
7669 goto skip_beacons;
7670
7671 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7672 if (err)
7673 return err;
7674
7675 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7676 info->attrs[NL80211_ATTR_CSA_IES],
7677 nl80211_policy, info->extack);
7678 if (err)
7679 return err;
7680
7681 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7682 if (err)
7683 return err;
7684
7685 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7686 return -EINVAL;
7687
7688 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7689 if (!len || (len % sizeof(u16)))
7690 return -EINVAL;
7691
7692 params.n_counter_offsets_beacon = len / sizeof(u16);
7693 if (rdev->wiphy.max_num_csa_counters &&
7694 (params.n_counter_offsets_beacon >
7695 rdev->wiphy.max_num_csa_counters))
7696 return -EINVAL;
7697
7698 params.counter_offsets_beacon =
7699 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7700
7701 /* sanity checks - counters should fit and be the same */
7702 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7703 u16 offset = params.counter_offsets_beacon[i];
7704
7705 if (offset >= params.beacon_csa.tail_len)
7706 return -EINVAL;
7707
7708 if (params.beacon_csa.tail[offset] != params.count)
7709 return -EINVAL;
7710 }
7711
7712 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7713 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7714 if (!len || (len % sizeof(u16)))
7715 return -EINVAL;
7716
7717 params.n_counter_offsets_presp = len / sizeof(u16);
7718 if (rdev->wiphy.max_num_csa_counters &&
7719 (params.n_counter_offsets_presp >
7720 rdev->wiphy.max_num_csa_counters))
7721 return -EINVAL;
7722
7723 params.counter_offsets_presp =
7724 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7725
7726 /* sanity checks - counters should fit and be the same */
7727 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7728 u16 offset = params.counter_offsets_presp[i];
7729
7730 if (offset >= params.beacon_csa.probe_resp_len)
7731 return -EINVAL;
7732
7733 if (params.beacon_csa.probe_resp[offset] !=
7734 params.count)
7735 return -EINVAL;
7736 }
7737 }
7738
7739 skip_beacons:
7740 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7741 if (err)
7742 return err;
7743
7744 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7745 wdev->iftype))
7746 return -EINVAL;
7747
7748 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7749 &params.chandef,
7750 wdev->iftype);
7751 if (err < 0)
7752 return err;
7753
7754 if (err > 0) {
7755 params.radar_required = true;
7756 if (need_handle_dfs_flag &&
7757 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7758 return -EINVAL;
7759 }
7760 }
7761
7762 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7763 params.block_tx = true;
7764
7765 wdev_lock(wdev);
7766 err = rdev_channel_switch(rdev, dev, &params);
7767 wdev_unlock(wdev);
7768
7769 return err;
7770 }
7771
7772 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7773 u32 seq, int flags,
7774 struct cfg80211_registered_device *rdev,
7775 struct wireless_dev *wdev,
7776 struct cfg80211_internal_bss *intbss)
7777 {
7778 struct cfg80211_bss *res = &intbss->pub;
7779 const struct cfg80211_bss_ies *ies;
7780 void *hdr;
7781 struct nlattr *bss;
7782
7783 ASSERT_WDEV_LOCK(wdev);
7784
7785 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7786 NL80211_CMD_NEW_SCAN_RESULTS);
7787 if (!hdr)
7788 return -1;
7789
7790 genl_dump_check_consistent(cb, hdr);
7791
7792 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7793 goto nla_put_failure;
7794 if (wdev->netdev &&
7795 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7796 goto nla_put_failure;
7797 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7798 NL80211_ATTR_PAD))
7799 goto nla_put_failure;
7800
7801 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7802 if (!bss)
7803 goto nla_put_failure;
7804 if ((!is_zero_ether_addr(res->bssid) &&
7805 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7806 goto nla_put_failure;
7807
7808 rcu_read_lock();
7809 /* indicate whether we have probe response data or not */
7810 if (rcu_access_pointer(res->proberesp_ies) &&
7811 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7812 goto fail_unlock_rcu;
7813
7814 /* this pointer prefers to be pointed to probe response data
7815 * but is always valid
7816 */
7817 ies = rcu_dereference(res->ies);
7818 if (ies) {
7819 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7820 NL80211_BSS_PAD))
7821 goto fail_unlock_rcu;
7822 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7823 ies->len, ies->data))
7824 goto fail_unlock_rcu;
7825 }
7826
7827 /* and this pointer is always (unless driver didn't know) beacon data */
7828 ies = rcu_dereference(res->beacon_ies);
7829 if (ies && ies->from_beacon) {
7830 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7831 NL80211_BSS_PAD))
7832 goto fail_unlock_rcu;
7833 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7834 ies->len, ies->data))
7835 goto fail_unlock_rcu;
7836 }
7837 rcu_read_unlock();
7838
7839 if (res->beacon_interval &&
7840 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7841 goto nla_put_failure;
7842 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7843 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7844 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7845 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7846 jiffies_to_msecs(jiffies - intbss->ts)))
7847 goto nla_put_failure;
7848
7849 if (intbss->parent_tsf &&
7850 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7851 intbss->parent_tsf, NL80211_BSS_PAD) ||
7852 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7853 intbss->parent_bssid)))
7854 goto nla_put_failure;
7855
7856 if (intbss->ts_boottime &&
7857 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7858 intbss->ts_boottime, NL80211_BSS_PAD))
7859 goto nla_put_failure;
7860
7861 switch (rdev->wiphy.signal_type) {
7862 case CFG80211_SIGNAL_TYPE_MBM:
7863 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7864 goto nla_put_failure;
7865 break;
7866 case CFG80211_SIGNAL_TYPE_UNSPEC:
7867 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7868 goto nla_put_failure;
7869 break;
7870 default:
7871 break;
7872 }
7873
7874 switch (wdev->iftype) {
7875 case NL80211_IFTYPE_P2P_CLIENT:
7876 case NL80211_IFTYPE_STATION:
7877 if (intbss == wdev->current_bss &&
7878 nla_put_u32(msg, NL80211_BSS_STATUS,
7879 NL80211_BSS_STATUS_ASSOCIATED))
7880 goto nla_put_failure;
7881 break;
7882 case NL80211_IFTYPE_ADHOC:
7883 if (intbss == wdev->current_bss &&
7884 nla_put_u32(msg, NL80211_BSS_STATUS,
7885 NL80211_BSS_STATUS_IBSS_JOINED))
7886 goto nla_put_failure;
7887 break;
7888 default:
7889 break;
7890 }
7891
7892 nla_nest_end(msg, bss);
7893
7894 genlmsg_end(msg, hdr);
7895 return 0;
7896
7897 fail_unlock_rcu:
7898 rcu_read_unlock();
7899 nla_put_failure:
7900 genlmsg_cancel(msg, hdr);
7901 return -EMSGSIZE;
7902 }
7903
7904 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7905 {
7906 struct cfg80211_registered_device *rdev;
7907 struct cfg80211_internal_bss *scan;
7908 struct wireless_dev *wdev;
7909 int start = cb->args[2], idx = 0;
7910 int err;
7911
7912 rtnl_lock();
7913 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7914 if (err) {
7915 rtnl_unlock();
7916 return err;
7917 }
7918
7919 wdev_lock(wdev);
7920 spin_lock_bh(&rdev->bss_lock);
7921 cfg80211_bss_expire(rdev);
7922
7923 cb->seq = rdev->bss_generation;
7924
7925 list_for_each_entry(scan, &rdev->bss_list, list) {
7926 if (++idx <= start)
7927 continue;
7928 if (nl80211_send_bss(skb, cb,
7929 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7930 rdev, wdev, scan) < 0) {
7931 idx--;
7932 break;
7933 }
7934 }
7935
7936 spin_unlock_bh(&rdev->bss_lock);
7937 wdev_unlock(wdev);
7938
7939 cb->args[2] = idx;
7940 rtnl_unlock();
7941
7942 return skb->len;
7943 }
7944
7945 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7946 int flags, struct net_device *dev,
7947 bool allow_radio_stats,
7948 struct survey_info *survey)
7949 {
7950 void *hdr;
7951 struct nlattr *infoattr;
7952
7953 /* skip radio stats if userspace didn't request them */
7954 if (!survey->channel && !allow_radio_stats)
7955 return 0;
7956
7957 hdr = nl80211hdr_put(msg, portid, seq, flags,
7958 NL80211_CMD_NEW_SURVEY_RESULTS);
7959 if (!hdr)
7960 return -ENOMEM;
7961
7962 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7963 goto nla_put_failure;
7964
7965 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7966 if (!infoattr)
7967 goto nla_put_failure;
7968
7969 if (survey->channel &&
7970 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7971 survey->channel->center_freq))
7972 goto nla_put_failure;
7973
7974 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7975 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7976 goto nla_put_failure;
7977 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7978 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7979 goto nla_put_failure;
7980 if ((survey->filled & SURVEY_INFO_TIME) &&
7981 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7982 survey->time, NL80211_SURVEY_INFO_PAD))
7983 goto nla_put_failure;
7984 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7985 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7986 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7987 goto nla_put_failure;
7988 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7989 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7990 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7991 goto nla_put_failure;
7992 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7993 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7994 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7995 goto nla_put_failure;
7996 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7997 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7998 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7999 goto nla_put_failure;
8000 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8001 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8002 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8003 goto nla_put_failure;
8004
8005 nla_nest_end(msg, infoattr);
8006
8007 genlmsg_end(msg, hdr);
8008 return 0;
8009
8010 nla_put_failure:
8011 genlmsg_cancel(msg, hdr);
8012 return -EMSGSIZE;
8013 }
8014
8015 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8016 {
8017 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8018 struct survey_info survey;
8019 struct cfg80211_registered_device *rdev;
8020 struct wireless_dev *wdev;
8021 int survey_idx = cb->args[2];
8022 int res;
8023 bool radio_stats;
8024
8025 rtnl_lock();
8026 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8027 if (res)
8028 goto out_err;
8029
8030 /* prepare_wdev_dump parsed the attributes */
8031 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8032
8033 if (!wdev->netdev) {
8034 res = -EINVAL;
8035 goto out_err;
8036 }
8037
8038 if (!rdev->ops->dump_survey) {
8039 res = -EOPNOTSUPP;
8040 goto out_err;
8041 }
8042
8043 while (1) {
8044 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8045 if (res == -ENOENT)
8046 break;
8047 if (res)
8048 goto out_err;
8049
8050 /* don't send disabled channels, but do send non-channel data */
8051 if (survey.channel &&
8052 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8053 survey_idx++;
8054 continue;
8055 }
8056
8057 if (nl80211_send_survey(skb,
8058 NETLINK_CB(cb->skb).portid,
8059 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8060 wdev->netdev, radio_stats, &survey) < 0)
8061 goto out;
8062 survey_idx++;
8063 }
8064
8065 out:
8066 cb->args[2] = survey_idx;
8067 res = skb->len;
8068 out_err:
8069 rtnl_unlock();
8070 return res;
8071 }
8072
8073 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8074 {
8075 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8076 NL80211_WPA_VERSION_2));
8077 }
8078
8079 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8080 {
8081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8082 struct net_device *dev = info->user_ptr[1];
8083 struct ieee80211_channel *chan;
8084 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8085 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8086 enum nl80211_auth_type auth_type;
8087 struct key_parse key;
8088 bool local_state_change;
8089
8090 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8091 return -EINVAL;
8092
8093 if (!info->attrs[NL80211_ATTR_MAC])
8094 return -EINVAL;
8095
8096 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8097 return -EINVAL;
8098
8099 if (!info->attrs[NL80211_ATTR_SSID])
8100 return -EINVAL;
8101
8102 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8103 return -EINVAL;
8104
8105 err = nl80211_parse_key(info, &key);
8106 if (err)
8107 return err;
8108
8109 if (key.idx >= 0) {
8110 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8111 return -EINVAL;
8112 if (!key.p.key || !key.p.key_len)
8113 return -EINVAL;
8114 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8115 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8116 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8117 key.p.key_len != WLAN_KEY_LEN_WEP104))
8118 return -EINVAL;
8119 if (key.idx > 3)
8120 return -EINVAL;
8121 } else {
8122 key.p.key_len = 0;
8123 key.p.key = NULL;
8124 }
8125
8126 if (key.idx >= 0) {
8127 int i;
8128 bool ok = false;
8129
8130 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8131 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8132 ok = true;
8133 break;
8134 }
8135 }
8136 if (!ok)
8137 return -EINVAL;
8138 }
8139
8140 if (!rdev->ops->auth)
8141 return -EOPNOTSUPP;
8142
8143 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8144 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8145 return -EOPNOTSUPP;
8146
8147 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8148 chan = nl80211_get_valid_chan(&rdev->wiphy,
8149 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8150 if (!chan)
8151 return -EINVAL;
8152
8153 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8154 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8155
8156 if (info->attrs[NL80211_ATTR_IE]) {
8157 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8158 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8159 }
8160
8161 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8162 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8163 return -EINVAL;
8164
8165 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8166 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8167 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8168 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8169 !info->attrs[NL80211_ATTR_AUTH_DATA])
8170 return -EINVAL;
8171
8172 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8173 if (auth_type != NL80211_AUTHTYPE_SAE &&
8174 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8175 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8176 auth_type != NL80211_AUTHTYPE_FILS_PK)
8177 return -EINVAL;
8178 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8179 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8180 /* need to include at least Auth Transaction and Status Code */
8181 if (auth_data_len < 4)
8182 return -EINVAL;
8183 }
8184
8185 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8186
8187 /*
8188 * Since we no longer track auth state, ignore
8189 * requests to only change local state.
8190 */
8191 if (local_state_change)
8192 return 0;
8193
8194 wdev_lock(dev->ieee80211_ptr);
8195 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8196 ssid, ssid_len, ie, ie_len,
8197 key.p.key, key.p.key_len, key.idx,
8198 auth_data, auth_data_len);
8199 wdev_unlock(dev->ieee80211_ptr);
8200 return err;
8201 }
8202
8203 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8204 struct genl_info *info,
8205 struct cfg80211_crypto_settings *settings,
8206 int cipher_limit)
8207 {
8208 memset(settings, 0, sizeof(*settings));
8209
8210 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8211
8212 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8213 u16 proto;
8214
8215 proto = nla_get_u16(
8216 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8217 settings->control_port_ethertype = cpu_to_be16(proto);
8218 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8219 proto != ETH_P_PAE)
8220 return -EINVAL;
8221 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8222 settings->control_port_no_encrypt = true;
8223 } else
8224 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8225
8226 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8227 void *data;
8228 int len, i;
8229
8230 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8231 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8232 settings->n_ciphers_pairwise = len / sizeof(u32);
8233
8234 if (len % sizeof(u32))
8235 return -EINVAL;
8236
8237 if (settings->n_ciphers_pairwise > cipher_limit)
8238 return -EINVAL;
8239
8240 memcpy(settings->ciphers_pairwise, data, len);
8241
8242 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8243 if (!cfg80211_supported_cipher_suite(
8244 &rdev->wiphy,
8245 settings->ciphers_pairwise[i]))
8246 return -EINVAL;
8247 }
8248
8249 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8250 settings->cipher_group =
8251 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8252 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8253 settings->cipher_group))
8254 return -EINVAL;
8255 }
8256
8257 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8258 settings->wpa_versions =
8259 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8260 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8261 return -EINVAL;
8262 }
8263
8264 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8265 void *data;
8266 int len;
8267
8268 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8269 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8270 settings->n_akm_suites = len / sizeof(u32);
8271
8272 if (len % sizeof(u32))
8273 return -EINVAL;
8274
8275 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8276 return -EINVAL;
8277
8278 memcpy(settings->akm_suites, data, len);
8279 }
8280
8281 if (info->attrs[NL80211_ATTR_PMK]) {
8282 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8283 return -EINVAL;
8284 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8285 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8286 return -EINVAL;
8287 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8288 }
8289
8290 return 0;
8291 }
8292
8293 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8294 {
8295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8296 struct net_device *dev = info->user_ptr[1];
8297 struct ieee80211_channel *chan;
8298 struct cfg80211_assoc_request req = {};
8299 const u8 *bssid, *ssid;
8300 int err, ssid_len = 0;
8301
8302 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8303 return -EINVAL;
8304
8305 if (!info->attrs[NL80211_ATTR_MAC] ||
8306 !info->attrs[NL80211_ATTR_SSID] ||
8307 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8308 return -EINVAL;
8309
8310 if (!rdev->ops->assoc)
8311 return -EOPNOTSUPP;
8312
8313 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8314 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8315 return -EOPNOTSUPP;
8316
8317 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8318
8319 chan = nl80211_get_valid_chan(&rdev->wiphy,
8320 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8321 if (!chan)
8322 return -EINVAL;
8323
8324 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8325 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8326
8327 if (info->attrs[NL80211_ATTR_IE]) {
8328 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8329 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8330 }
8331
8332 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8333 enum nl80211_mfp mfp =
8334 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8335 if (mfp == NL80211_MFP_REQUIRED)
8336 req.use_mfp = true;
8337 else if (mfp != NL80211_MFP_NO)
8338 return -EINVAL;
8339 }
8340
8341 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8342 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8343
8344 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8345 req.flags |= ASSOC_REQ_DISABLE_HT;
8346
8347 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8348 memcpy(&req.ht_capa_mask,
8349 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8350 sizeof(req.ht_capa_mask));
8351
8352 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8353 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8354 return -EINVAL;
8355 memcpy(&req.ht_capa,
8356 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8357 sizeof(req.ht_capa));
8358 }
8359
8360 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8361 req.flags |= ASSOC_REQ_DISABLE_VHT;
8362
8363 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8364 memcpy(&req.vht_capa_mask,
8365 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8366 sizeof(req.vht_capa_mask));
8367
8368 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8369 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8370 return -EINVAL;
8371 memcpy(&req.vht_capa,
8372 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8373 sizeof(req.vht_capa));
8374 }
8375
8376 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8377 if (!((rdev->wiphy.features &
8378 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8379 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8380 !wiphy_ext_feature_isset(&rdev->wiphy,
8381 NL80211_EXT_FEATURE_RRM))
8382 return -EINVAL;
8383 req.flags |= ASSOC_REQ_USE_RRM;
8384 }
8385
8386 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8387 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8388 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8389 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8390 return -EINVAL;
8391 req.fils_nonces =
8392 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8393 }
8394
8395 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8396 if (!err) {
8397 wdev_lock(dev->ieee80211_ptr);
8398
8399 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8400 ssid, ssid_len, &req);
8401
8402 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8403 dev->ieee80211_ptr->conn_owner_nlportid =
8404 info->snd_portid;
8405 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8406 bssid, ETH_ALEN);
8407 }
8408
8409 wdev_unlock(dev->ieee80211_ptr);
8410 }
8411
8412 return err;
8413 }
8414
8415 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8416 {
8417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8418 struct net_device *dev = info->user_ptr[1];
8419 const u8 *ie = NULL, *bssid;
8420 int ie_len = 0, err;
8421 u16 reason_code;
8422 bool local_state_change;
8423
8424 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8425 return -EINVAL;
8426
8427 if (!info->attrs[NL80211_ATTR_MAC])
8428 return -EINVAL;
8429
8430 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8431 return -EINVAL;
8432
8433 if (!rdev->ops->deauth)
8434 return -EOPNOTSUPP;
8435
8436 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8437 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8438 return -EOPNOTSUPP;
8439
8440 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8441
8442 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8443 if (reason_code == 0) {
8444 /* Reason Code 0 is reserved */
8445 return -EINVAL;
8446 }
8447
8448 if (info->attrs[NL80211_ATTR_IE]) {
8449 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8450 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8451 }
8452
8453 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8454
8455 wdev_lock(dev->ieee80211_ptr);
8456 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8457 local_state_change);
8458 wdev_unlock(dev->ieee80211_ptr);
8459 return err;
8460 }
8461
8462 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8463 {
8464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8465 struct net_device *dev = info->user_ptr[1];
8466 const u8 *ie = NULL, *bssid;
8467 int ie_len = 0, err;
8468 u16 reason_code;
8469 bool local_state_change;
8470
8471 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8472 return -EINVAL;
8473
8474 if (!info->attrs[NL80211_ATTR_MAC])
8475 return -EINVAL;
8476
8477 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8478 return -EINVAL;
8479
8480 if (!rdev->ops->disassoc)
8481 return -EOPNOTSUPP;
8482
8483 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8484 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8485 return -EOPNOTSUPP;
8486
8487 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8488
8489 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8490 if (reason_code == 0) {
8491 /* Reason Code 0 is reserved */
8492 return -EINVAL;
8493 }
8494
8495 if (info->attrs[NL80211_ATTR_IE]) {
8496 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8497 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8498 }
8499
8500 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8501
8502 wdev_lock(dev->ieee80211_ptr);
8503 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8504 local_state_change);
8505 wdev_unlock(dev->ieee80211_ptr);
8506 return err;
8507 }
8508
8509 static bool
8510 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8511 int mcast_rate[NUM_NL80211_BANDS],
8512 int rateval)
8513 {
8514 struct wiphy *wiphy = &rdev->wiphy;
8515 bool found = false;
8516 int band, i;
8517
8518 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8519 struct ieee80211_supported_band *sband;
8520
8521 sband = wiphy->bands[band];
8522 if (!sband)
8523 continue;
8524
8525 for (i = 0; i < sband->n_bitrates; i++) {
8526 if (sband->bitrates[i].bitrate == rateval) {
8527 mcast_rate[band] = i + 1;
8528 found = true;
8529 break;
8530 }
8531 }
8532 }
8533
8534 return found;
8535 }
8536
8537 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8538 {
8539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540 struct net_device *dev = info->user_ptr[1];
8541 struct cfg80211_ibss_params ibss;
8542 struct wiphy *wiphy;
8543 struct cfg80211_cached_keys *connkeys = NULL;
8544 int err;
8545
8546 memset(&ibss, 0, sizeof(ibss));
8547
8548 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8549 return -EINVAL;
8550
8551 if (!info->attrs[NL80211_ATTR_SSID] ||
8552 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8553 return -EINVAL;
8554
8555 ibss.beacon_interval = 100;
8556
8557 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8558 ibss.beacon_interval =
8559 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8560
8561 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8562 ibss.beacon_interval);
8563 if (err)
8564 return err;
8565
8566 if (!rdev->ops->join_ibss)
8567 return -EOPNOTSUPP;
8568
8569 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8570 return -EOPNOTSUPP;
8571
8572 wiphy = &rdev->wiphy;
8573
8574 if (info->attrs[NL80211_ATTR_MAC]) {
8575 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8576
8577 if (!is_valid_ether_addr(ibss.bssid))
8578 return -EINVAL;
8579 }
8580 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8581 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8582
8583 if (info->attrs[NL80211_ATTR_IE]) {
8584 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8585 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8586 }
8587
8588 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8589 if (err)
8590 return err;
8591
8592 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8593 NL80211_IFTYPE_ADHOC))
8594 return -EINVAL;
8595
8596 switch (ibss.chandef.width) {
8597 case NL80211_CHAN_WIDTH_5:
8598 case NL80211_CHAN_WIDTH_10:
8599 case NL80211_CHAN_WIDTH_20_NOHT:
8600 break;
8601 case NL80211_CHAN_WIDTH_20:
8602 case NL80211_CHAN_WIDTH_40:
8603 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8604 return -EINVAL;
8605 break;
8606 case NL80211_CHAN_WIDTH_80:
8607 case NL80211_CHAN_WIDTH_80P80:
8608 case NL80211_CHAN_WIDTH_160:
8609 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8610 return -EINVAL;
8611 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8612 NL80211_EXT_FEATURE_VHT_IBSS))
8613 return -EINVAL;
8614 break;
8615 default:
8616 return -EINVAL;
8617 }
8618
8619 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8620 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8621
8622 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8623 u8 *rates =
8624 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8625 int n_rates =
8626 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8627 struct ieee80211_supported_band *sband =
8628 wiphy->bands[ibss.chandef.chan->band];
8629
8630 err = ieee80211_get_ratemask(sband, rates, n_rates,
8631 &ibss.basic_rates);
8632 if (err)
8633 return err;
8634 }
8635
8636 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8637 memcpy(&ibss.ht_capa_mask,
8638 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8639 sizeof(ibss.ht_capa_mask));
8640
8641 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8642 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8643 return -EINVAL;
8644 memcpy(&ibss.ht_capa,
8645 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8646 sizeof(ibss.ht_capa));
8647 }
8648
8649 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8650 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8651 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8652 return -EINVAL;
8653
8654 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8655 bool no_ht = false;
8656
8657 connkeys = nl80211_parse_connkeys(rdev,
8658 info->attrs[NL80211_ATTR_KEYS],
8659 &no_ht);
8660 if (IS_ERR(connkeys))
8661 return PTR_ERR(connkeys);
8662
8663 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8664 no_ht) {
8665 kzfree(connkeys);
8666 return -EINVAL;
8667 }
8668 }
8669
8670 ibss.control_port =
8671 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8672
8673 ibss.userspace_handles_dfs =
8674 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8675
8676 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8677 if (err)
8678 kzfree(connkeys);
8679 return err;
8680 }
8681
8682 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8683 {
8684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8685 struct net_device *dev = info->user_ptr[1];
8686
8687 if (!rdev->ops->leave_ibss)
8688 return -EOPNOTSUPP;
8689
8690 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8691 return -EOPNOTSUPP;
8692
8693 return cfg80211_leave_ibss(rdev, dev, false);
8694 }
8695
8696 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8697 {
8698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8699 struct net_device *dev = info->user_ptr[1];
8700 int mcast_rate[NUM_NL80211_BANDS];
8701 u32 nla_rate;
8702 int err;
8703
8704 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8705 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8706 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8707 return -EOPNOTSUPP;
8708
8709 if (!rdev->ops->set_mcast_rate)
8710 return -EOPNOTSUPP;
8711
8712 memset(mcast_rate, 0, sizeof(mcast_rate));
8713
8714 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8715 return -EINVAL;
8716
8717 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8718 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8719 return -EINVAL;
8720
8721 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8722
8723 return err;
8724 }
8725
8726 static struct sk_buff *
8727 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8728 struct wireless_dev *wdev, int approxlen,
8729 u32 portid, u32 seq, enum nl80211_commands cmd,
8730 enum nl80211_attrs attr,
8731 const struct nl80211_vendor_cmd_info *info,
8732 gfp_t gfp)
8733 {
8734 struct sk_buff *skb;
8735 void *hdr;
8736 struct nlattr *data;
8737
8738 skb = nlmsg_new(approxlen + 100, gfp);
8739 if (!skb)
8740 return NULL;
8741
8742 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8743 if (!hdr) {
8744 kfree_skb(skb);
8745 return NULL;
8746 }
8747
8748 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8749 goto nla_put_failure;
8750
8751 if (info) {
8752 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8753 info->vendor_id))
8754 goto nla_put_failure;
8755 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8756 info->subcmd))
8757 goto nla_put_failure;
8758 }
8759
8760 if (wdev) {
8761 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8762 wdev_id(wdev), NL80211_ATTR_PAD))
8763 goto nla_put_failure;
8764 if (wdev->netdev &&
8765 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8766 wdev->netdev->ifindex))
8767 goto nla_put_failure;
8768 }
8769
8770 data = nla_nest_start(skb, attr);
8771 if (!data)
8772 goto nla_put_failure;
8773
8774 ((void **)skb->cb)[0] = rdev;
8775 ((void **)skb->cb)[1] = hdr;
8776 ((void **)skb->cb)[2] = data;
8777
8778 return skb;
8779
8780 nla_put_failure:
8781 kfree_skb(skb);
8782 return NULL;
8783 }
8784
8785 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8786 struct wireless_dev *wdev,
8787 enum nl80211_commands cmd,
8788 enum nl80211_attrs attr,
8789 int vendor_event_idx,
8790 int approxlen, gfp_t gfp)
8791 {
8792 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8793 const struct nl80211_vendor_cmd_info *info;
8794
8795 switch (cmd) {
8796 case NL80211_CMD_TESTMODE:
8797 if (WARN_ON(vendor_event_idx != -1))
8798 return NULL;
8799 info = NULL;
8800 break;
8801 case NL80211_CMD_VENDOR:
8802 if (WARN_ON(vendor_event_idx < 0 ||
8803 vendor_event_idx >= wiphy->n_vendor_events))
8804 return NULL;
8805 info = &wiphy->vendor_events[vendor_event_idx];
8806 break;
8807 default:
8808 WARN_ON(1);
8809 return NULL;
8810 }
8811
8812 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8813 cmd, attr, info, gfp);
8814 }
8815 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8816
8817 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8818 {
8819 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8820 void *hdr = ((void **)skb->cb)[1];
8821 struct nlattr *data = ((void **)skb->cb)[2];
8822 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8823
8824 /* clear CB data for netlink core to own from now on */
8825 memset(skb->cb, 0, sizeof(skb->cb));
8826
8827 nla_nest_end(skb, data);
8828 genlmsg_end(skb, hdr);
8829
8830 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8831 mcgrp = NL80211_MCGRP_VENDOR;
8832
8833 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8834 mcgrp, gfp);
8835 }
8836 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8837
8838 #ifdef CONFIG_NL80211_TESTMODE
8839 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8840 {
8841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8842 struct wireless_dev *wdev =
8843 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8844 int err;
8845
8846 if (!rdev->ops->testmode_cmd)
8847 return -EOPNOTSUPP;
8848
8849 if (IS_ERR(wdev)) {
8850 err = PTR_ERR(wdev);
8851 if (err != -EINVAL)
8852 return err;
8853 wdev = NULL;
8854 } else if (wdev->wiphy != &rdev->wiphy) {
8855 return -EINVAL;
8856 }
8857
8858 if (!info->attrs[NL80211_ATTR_TESTDATA])
8859 return -EINVAL;
8860
8861 rdev->cur_cmd_info = info;
8862 err = rdev_testmode_cmd(rdev, wdev,
8863 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8864 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8865 rdev->cur_cmd_info = NULL;
8866
8867 return err;
8868 }
8869
8870 static int nl80211_testmode_dump(struct sk_buff *skb,
8871 struct netlink_callback *cb)
8872 {
8873 struct cfg80211_registered_device *rdev;
8874 int err;
8875 long phy_idx;
8876 void *data = NULL;
8877 int data_len = 0;
8878
8879 rtnl_lock();
8880
8881 if (cb->args[0]) {
8882 /*
8883 * 0 is a valid index, but not valid for args[0],
8884 * so we need to offset by 1.
8885 */
8886 phy_idx = cb->args[0] - 1;
8887
8888 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8889 if (!rdev) {
8890 err = -ENOENT;
8891 goto out_err;
8892 }
8893 } else {
8894 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8895
8896 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8897 attrbuf, nl80211_fam.maxattr,
8898 nl80211_policy, NULL);
8899 if (err)
8900 goto out_err;
8901
8902 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8903 if (IS_ERR(rdev)) {
8904 err = PTR_ERR(rdev);
8905 goto out_err;
8906 }
8907 phy_idx = rdev->wiphy_idx;
8908
8909 if (attrbuf[NL80211_ATTR_TESTDATA])
8910 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8911 }
8912
8913 if (cb->args[1]) {
8914 data = nla_data((void *)cb->args[1]);
8915 data_len = nla_len((void *)cb->args[1]);
8916 }
8917
8918 if (!rdev->ops->testmode_dump) {
8919 err = -EOPNOTSUPP;
8920 goto out_err;
8921 }
8922
8923 while (1) {
8924 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8925 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8926 NL80211_CMD_TESTMODE);
8927 struct nlattr *tmdata;
8928
8929 if (!hdr)
8930 break;
8931
8932 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8933 genlmsg_cancel(skb, hdr);
8934 break;
8935 }
8936
8937 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8938 if (!tmdata) {
8939 genlmsg_cancel(skb, hdr);
8940 break;
8941 }
8942 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8943 nla_nest_end(skb, tmdata);
8944
8945 if (err == -ENOBUFS || err == -ENOENT) {
8946 genlmsg_cancel(skb, hdr);
8947 break;
8948 } else if (err) {
8949 genlmsg_cancel(skb, hdr);
8950 goto out_err;
8951 }
8952
8953 genlmsg_end(skb, hdr);
8954 }
8955
8956 err = skb->len;
8957 /* see above */
8958 cb->args[0] = phy_idx + 1;
8959 out_err:
8960 rtnl_unlock();
8961 return err;
8962 }
8963 #endif
8964
8965 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8966 {
8967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8968 struct net_device *dev = info->user_ptr[1];
8969 struct cfg80211_connect_params connect;
8970 struct wiphy *wiphy;
8971 struct cfg80211_cached_keys *connkeys = NULL;
8972 int err;
8973
8974 memset(&connect, 0, sizeof(connect));
8975
8976 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8977 return -EINVAL;
8978
8979 if (!info->attrs[NL80211_ATTR_SSID] ||
8980 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8981 return -EINVAL;
8982
8983 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8984 connect.auth_type =
8985 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8986 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8987 NL80211_CMD_CONNECT))
8988 return -EINVAL;
8989 } else
8990 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8991
8992 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8993
8994 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8995 !wiphy_ext_feature_isset(&rdev->wiphy,
8996 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8997 return -EINVAL;
8998 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8999
9000 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9001 NL80211_MAX_NR_CIPHER_SUITES);
9002 if (err)
9003 return err;
9004
9005 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9006 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9007 return -EOPNOTSUPP;
9008
9009 wiphy = &rdev->wiphy;
9010
9011 connect.bg_scan_period = -1;
9012 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9013 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9014 connect.bg_scan_period =
9015 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9016 }
9017
9018 if (info->attrs[NL80211_ATTR_MAC])
9019 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9020 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9021 connect.bssid_hint =
9022 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9023 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9024 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9025
9026 if (info->attrs[NL80211_ATTR_IE]) {
9027 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9028 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9029 }
9030
9031 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9032 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9033 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9034 !wiphy_ext_feature_isset(&rdev->wiphy,
9035 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9036 return -EOPNOTSUPP;
9037
9038 if (connect.mfp != NL80211_MFP_REQUIRED &&
9039 connect.mfp != NL80211_MFP_NO &&
9040 connect.mfp != NL80211_MFP_OPTIONAL)
9041 return -EINVAL;
9042 } else {
9043 connect.mfp = NL80211_MFP_NO;
9044 }
9045
9046 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9047 connect.prev_bssid =
9048 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9049
9050 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9051 connect.channel = nl80211_get_valid_chan(
9052 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9053 if (!connect.channel)
9054 return -EINVAL;
9055 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9056 connect.channel_hint = nl80211_get_valid_chan(
9057 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9058 if (!connect.channel_hint)
9059 return -EINVAL;
9060 }
9061
9062 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9063 connkeys = nl80211_parse_connkeys(rdev,
9064 info->attrs[NL80211_ATTR_KEYS], NULL);
9065 if (IS_ERR(connkeys))
9066 return PTR_ERR(connkeys);
9067 }
9068
9069 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9070 connect.flags |= ASSOC_REQ_DISABLE_HT;
9071
9072 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9073 memcpy(&connect.ht_capa_mask,
9074 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9075 sizeof(connect.ht_capa_mask));
9076
9077 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9078 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9079 kzfree(connkeys);
9080 return -EINVAL;
9081 }
9082 memcpy(&connect.ht_capa,
9083 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9084 sizeof(connect.ht_capa));
9085 }
9086
9087 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9088 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9089
9090 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9091 memcpy(&connect.vht_capa_mask,
9092 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9093 sizeof(connect.vht_capa_mask));
9094
9095 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9096 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9097 kzfree(connkeys);
9098 return -EINVAL;
9099 }
9100 memcpy(&connect.vht_capa,
9101 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9102 sizeof(connect.vht_capa));
9103 }
9104
9105 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9106 if (!((rdev->wiphy.features &
9107 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9108 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9109 !wiphy_ext_feature_isset(&rdev->wiphy,
9110 NL80211_EXT_FEATURE_RRM)) {
9111 kzfree(connkeys);
9112 return -EINVAL;
9113 }
9114 connect.flags |= ASSOC_REQ_USE_RRM;
9115 }
9116
9117 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9118 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9119 kzfree(connkeys);
9120 return -EOPNOTSUPP;
9121 }
9122
9123 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9124 /* bss selection makes no sense if bssid is set */
9125 if (connect.bssid) {
9126 kzfree(connkeys);
9127 return -EINVAL;
9128 }
9129
9130 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9131 wiphy, &connect.bss_select);
9132 if (err) {
9133 kzfree(connkeys);
9134 return err;
9135 }
9136 }
9137
9138 if (wiphy_ext_feature_isset(&rdev->wiphy,
9139 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9140 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9141 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9142 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9143 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9144 connect.fils_erp_username =
9145 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9146 connect.fils_erp_username_len =
9147 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9148 connect.fils_erp_realm =
9149 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9150 connect.fils_erp_realm_len =
9151 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9152 connect.fils_erp_next_seq_num =
9153 nla_get_u16(
9154 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9155 connect.fils_erp_rrk =
9156 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9157 connect.fils_erp_rrk_len =
9158 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9159 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9160 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9161 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9162 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9163 kzfree(connkeys);
9164 return -EINVAL;
9165 }
9166
9167 wdev_lock(dev->ieee80211_ptr);
9168
9169 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9170 connect.prev_bssid);
9171 if (err)
9172 kzfree(connkeys);
9173
9174 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9175 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9176 if (connect.bssid)
9177 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9178 connect.bssid, ETH_ALEN);
9179 else
9180 memset(dev->ieee80211_ptr->disconnect_bssid,
9181 0, ETH_ALEN);
9182 }
9183
9184 wdev_unlock(dev->ieee80211_ptr);
9185
9186 return err;
9187 }
9188
9189 static int nl80211_update_connect_params(struct sk_buff *skb,
9190 struct genl_info *info)
9191 {
9192 struct cfg80211_connect_params connect = {};
9193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9194 struct net_device *dev = info->user_ptr[1];
9195 struct wireless_dev *wdev = dev->ieee80211_ptr;
9196 u32 changed = 0;
9197 int ret;
9198
9199 if (!rdev->ops->update_connect_params)
9200 return -EOPNOTSUPP;
9201
9202 if (info->attrs[NL80211_ATTR_IE]) {
9203 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9204 return -EINVAL;
9205 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9206 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9207 changed |= UPDATE_ASSOC_IES;
9208 }
9209
9210 wdev_lock(dev->ieee80211_ptr);
9211 if (!wdev->current_bss)
9212 ret = -ENOLINK;
9213 else
9214 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9215 wdev_unlock(dev->ieee80211_ptr);
9216
9217 return ret;
9218 }
9219
9220 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9221 {
9222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9223 struct net_device *dev = info->user_ptr[1];
9224 u16 reason;
9225 int ret;
9226
9227 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9228 reason = WLAN_REASON_DEAUTH_LEAVING;
9229 else
9230 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9231
9232 if (reason == 0)
9233 return -EINVAL;
9234
9235 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9236 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9237 return -EOPNOTSUPP;
9238
9239 wdev_lock(dev->ieee80211_ptr);
9240 ret = cfg80211_disconnect(rdev, dev, reason, true);
9241 wdev_unlock(dev->ieee80211_ptr);
9242 return ret;
9243 }
9244
9245 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9246 {
9247 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9248 struct net *net;
9249 int err;
9250
9251 if (info->attrs[NL80211_ATTR_PID]) {
9252 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9253
9254 net = get_net_ns_by_pid(pid);
9255 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9256 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9257
9258 net = get_net_ns_by_fd(fd);
9259 } else {
9260 return -EINVAL;
9261 }
9262
9263 if (IS_ERR(net))
9264 return PTR_ERR(net);
9265
9266 err = 0;
9267
9268 /* check if anything to do */
9269 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9270 err = cfg80211_switch_netns(rdev, net);
9271
9272 put_net(net);
9273 return err;
9274 }
9275
9276 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9277 {
9278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9279 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9280 struct cfg80211_pmksa *pmksa) = NULL;
9281 struct net_device *dev = info->user_ptr[1];
9282 struct cfg80211_pmksa pmksa;
9283
9284 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9285
9286 if (!info->attrs[NL80211_ATTR_PMKID])
9287 return -EINVAL;
9288
9289 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9290
9291 if (info->attrs[NL80211_ATTR_MAC]) {
9292 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9293 } else if (info->attrs[NL80211_ATTR_SSID] &&
9294 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9295 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9296 info->attrs[NL80211_ATTR_PMK])) {
9297 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9298 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9299 pmksa.cache_id =
9300 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9301 } else {
9302 return -EINVAL;
9303 }
9304 if (info->attrs[NL80211_ATTR_PMK]) {
9305 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9306 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9307 }
9308
9309 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9310 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9311 return -EOPNOTSUPP;
9312
9313 switch (info->genlhdr->cmd) {
9314 case NL80211_CMD_SET_PMKSA:
9315 rdev_ops = rdev->ops->set_pmksa;
9316 break;
9317 case NL80211_CMD_DEL_PMKSA:
9318 rdev_ops = rdev->ops->del_pmksa;
9319 break;
9320 default:
9321 WARN_ON(1);
9322 break;
9323 }
9324
9325 if (!rdev_ops)
9326 return -EOPNOTSUPP;
9327
9328 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9329 }
9330
9331 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9332 {
9333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9334 struct net_device *dev = info->user_ptr[1];
9335
9336 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9337 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9338 return -EOPNOTSUPP;
9339
9340 if (!rdev->ops->flush_pmksa)
9341 return -EOPNOTSUPP;
9342
9343 return rdev_flush_pmksa(rdev, dev);
9344 }
9345
9346 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9347 {
9348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9349 struct net_device *dev = info->user_ptr[1];
9350 u8 action_code, dialog_token;
9351 u32 peer_capability = 0;
9352 u16 status_code;
9353 u8 *peer;
9354 bool initiator;
9355
9356 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9357 !rdev->ops->tdls_mgmt)
9358 return -EOPNOTSUPP;
9359
9360 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9361 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9362 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9363 !info->attrs[NL80211_ATTR_IE] ||
9364 !info->attrs[NL80211_ATTR_MAC])
9365 return -EINVAL;
9366
9367 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9368 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9369 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9370 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9371 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9372 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9373 peer_capability =
9374 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9375
9376 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9377 dialog_token, status_code, peer_capability,
9378 initiator,
9379 nla_data(info->attrs[NL80211_ATTR_IE]),
9380 nla_len(info->attrs[NL80211_ATTR_IE]));
9381 }
9382
9383 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9384 {
9385 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9386 struct net_device *dev = info->user_ptr[1];
9387 enum nl80211_tdls_operation operation;
9388 u8 *peer;
9389
9390 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9391 !rdev->ops->tdls_oper)
9392 return -EOPNOTSUPP;
9393
9394 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9395 !info->attrs[NL80211_ATTR_MAC])
9396 return -EINVAL;
9397
9398 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9399 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9400
9401 return rdev_tdls_oper(rdev, dev, peer, operation);
9402 }
9403
9404 static int nl80211_remain_on_channel(struct sk_buff *skb,
9405 struct genl_info *info)
9406 {
9407 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9408 struct wireless_dev *wdev = info->user_ptr[1];
9409 struct cfg80211_chan_def chandef;
9410 const struct cfg80211_chan_def *compat_chandef;
9411 struct sk_buff *msg;
9412 void *hdr;
9413 u64 cookie;
9414 u32 duration;
9415 int err;
9416
9417 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9418 !info->attrs[NL80211_ATTR_DURATION])
9419 return -EINVAL;
9420
9421 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9422
9423 if (!rdev->ops->remain_on_channel ||
9424 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9425 return -EOPNOTSUPP;
9426
9427 /*
9428 * We should be on that channel for at least a minimum amount of
9429 * time (10ms) but no longer than the driver supports.
9430 */
9431 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9432 duration > rdev->wiphy.max_remain_on_channel_duration)
9433 return -EINVAL;
9434
9435 err = nl80211_parse_chandef(rdev, info, &chandef);
9436 if (err)
9437 return err;
9438
9439 wdev_lock(wdev);
9440 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9441 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9442 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9443 &chandef);
9444 if (compat_chandef != &chandef) {
9445 wdev_unlock(wdev);
9446 return -EBUSY;
9447 }
9448 }
9449 wdev_unlock(wdev);
9450
9451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9452 if (!msg)
9453 return -ENOMEM;
9454
9455 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9456 NL80211_CMD_REMAIN_ON_CHANNEL);
9457 if (!hdr) {
9458 err = -ENOBUFS;
9459 goto free_msg;
9460 }
9461
9462 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9463 duration, &cookie);
9464
9465 if (err)
9466 goto free_msg;
9467
9468 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9469 NL80211_ATTR_PAD))
9470 goto nla_put_failure;
9471
9472 genlmsg_end(msg, hdr);
9473
9474 return genlmsg_reply(msg, info);
9475
9476 nla_put_failure:
9477 err = -ENOBUFS;
9478 free_msg:
9479 nlmsg_free(msg);
9480 return err;
9481 }
9482
9483 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9484 struct genl_info *info)
9485 {
9486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9487 struct wireless_dev *wdev = info->user_ptr[1];
9488 u64 cookie;
9489
9490 if (!info->attrs[NL80211_ATTR_COOKIE])
9491 return -EINVAL;
9492
9493 if (!rdev->ops->cancel_remain_on_channel)
9494 return -EOPNOTSUPP;
9495
9496 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9497
9498 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9499 }
9500
9501 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9502 struct genl_info *info)
9503 {
9504 struct cfg80211_bitrate_mask mask;
9505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9506 struct net_device *dev = info->user_ptr[1];
9507 int err;
9508
9509 if (!rdev->ops->set_bitrate_mask)
9510 return -EOPNOTSUPP;
9511
9512 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9513 if (err)
9514 return err;
9515
9516 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9517 }
9518
9519 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9520 {
9521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9522 struct wireless_dev *wdev = info->user_ptr[1];
9523 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9524
9525 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9526 return -EINVAL;
9527
9528 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9529 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9530
9531 switch (wdev->iftype) {
9532 case NL80211_IFTYPE_STATION:
9533 case NL80211_IFTYPE_ADHOC:
9534 case NL80211_IFTYPE_P2P_CLIENT:
9535 case NL80211_IFTYPE_AP:
9536 case NL80211_IFTYPE_AP_VLAN:
9537 case NL80211_IFTYPE_MESH_POINT:
9538 case NL80211_IFTYPE_P2P_GO:
9539 case NL80211_IFTYPE_P2P_DEVICE:
9540 break;
9541 case NL80211_IFTYPE_NAN:
9542 default:
9543 return -EOPNOTSUPP;
9544 }
9545
9546 /* not much point in registering if we can't reply */
9547 if (!rdev->ops->mgmt_tx)
9548 return -EOPNOTSUPP;
9549
9550 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9551 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9552 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9553 }
9554
9555 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9556 {
9557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9558 struct wireless_dev *wdev = info->user_ptr[1];
9559 struct cfg80211_chan_def chandef;
9560 int err;
9561 void *hdr = NULL;
9562 u64 cookie;
9563 struct sk_buff *msg = NULL;
9564 struct cfg80211_mgmt_tx_params params = {
9565 .dont_wait_for_ack =
9566 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9567 };
9568
9569 if (!info->attrs[NL80211_ATTR_FRAME])
9570 return -EINVAL;
9571
9572 if (!rdev->ops->mgmt_tx)
9573 return -EOPNOTSUPP;
9574
9575 switch (wdev->iftype) {
9576 case NL80211_IFTYPE_P2P_DEVICE:
9577 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9578 return -EINVAL;
9579 case NL80211_IFTYPE_STATION:
9580 case NL80211_IFTYPE_ADHOC:
9581 case NL80211_IFTYPE_P2P_CLIENT:
9582 case NL80211_IFTYPE_AP:
9583 case NL80211_IFTYPE_AP_VLAN:
9584 case NL80211_IFTYPE_MESH_POINT:
9585 case NL80211_IFTYPE_P2P_GO:
9586 break;
9587 case NL80211_IFTYPE_NAN:
9588 default:
9589 return -EOPNOTSUPP;
9590 }
9591
9592 if (info->attrs[NL80211_ATTR_DURATION]) {
9593 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9594 return -EINVAL;
9595 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9596
9597 /*
9598 * We should wait on the channel for at least a minimum amount
9599 * of time (10ms) but no longer than the driver supports.
9600 */
9601 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9602 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9603 return -EINVAL;
9604 }
9605
9606 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9607
9608 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9609 return -EINVAL;
9610
9611 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9612
9613 /* get the channel if any has been specified, otherwise pass NULL to
9614 * the driver. The latter will use the current one
9615 */
9616 chandef.chan = NULL;
9617 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9618 err = nl80211_parse_chandef(rdev, info, &chandef);
9619 if (err)
9620 return err;
9621 }
9622
9623 if (!chandef.chan && params.offchan)
9624 return -EINVAL;
9625
9626 wdev_lock(wdev);
9627 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9628 wdev_unlock(wdev);
9629 return -EBUSY;
9630 }
9631 wdev_unlock(wdev);
9632
9633 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9634 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9635
9636 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9637 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9638 int i;
9639
9640 if (len % sizeof(u16))
9641 return -EINVAL;
9642
9643 params.n_csa_offsets = len / sizeof(u16);
9644 params.csa_offsets =
9645 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9646
9647 /* check that all the offsets fit the frame */
9648 for (i = 0; i < params.n_csa_offsets; i++) {
9649 if (params.csa_offsets[i] >= params.len)
9650 return -EINVAL;
9651 }
9652 }
9653
9654 if (!params.dont_wait_for_ack) {
9655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9656 if (!msg)
9657 return -ENOMEM;
9658
9659 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9660 NL80211_CMD_FRAME);
9661 if (!hdr) {
9662 err = -ENOBUFS;
9663 goto free_msg;
9664 }
9665 }
9666
9667 params.chan = chandef.chan;
9668 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9669 if (err)
9670 goto free_msg;
9671
9672 if (msg) {
9673 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9674 NL80211_ATTR_PAD))
9675 goto nla_put_failure;
9676
9677 genlmsg_end(msg, hdr);
9678 return genlmsg_reply(msg, info);
9679 }
9680
9681 return 0;
9682
9683 nla_put_failure:
9684 err = -ENOBUFS;
9685 free_msg:
9686 nlmsg_free(msg);
9687 return err;
9688 }
9689
9690 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9691 {
9692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9693 struct wireless_dev *wdev = info->user_ptr[1];
9694 u64 cookie;
9695
9696 if (!info->attrs[NL80211_ATTR_COOKIE])
9697 return -EINVAL;
9698
9699 if (!rdev->ops->mgmt_tx_cancel_wait)
9700 return -EOPNOTSUPP;
9701
9702 switch (wdev->iftype) {
9703 case NL80211_IFTYPE_STATION:
9704 case NL80211_IFTYPE_ADHOC:
9705 case NL80211_IFTYPE_P2P_CLIENT:
9706 case NL80211_IFTYPE_AP:
9707 case NL80211_IFTYPE_AP_VLAN:
9708 case NL80211_IFTYPE_P2P_GO:
9709 case NL80211_IFTYPE_P2P_DEVICE:
9710 break;
9711 case NL80211_IFTYPE_NAN:
9712 default:
9713 return -EOPNOTSUPP;
9714 }
9715
9716 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9717
9718 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9719 }
9720
9721 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9722 {
9723 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9724 struct wireless_dev *wdev;
9725 struct net_device *dev = info->user_ptr[1];
9726 u8 ps_state;
9727 bool state;
9728 int err;
9729
9730 if (!info->attrs[NL80211_ATTR_PS_STATE])
9731 return -EINVAL;
9732
9733 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9734
9735 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9736 return -EINVAL;
9737
9738 wdev = dev->ieee80211_ptr;
9739
9740 if (!rdev->ops->set_power_mgmt)
9741 return -EOPNOTSUPP;
9742
9743 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9744
9745 if (state == wdev->ps)
9746 return 0;
9747
9748 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9749 if (!err)
9750 wdev->ps = state;
9751 return err;
9752 }
9753
9754 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9755 {
9756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9757 enum nl80211_ps_state ps_state;
9758 struct wireless_dev *wdev;
9759 struct net_device *dev = info->user_ptr[1];
9760 struct sk_buff *msg;
9761 void *hdr;
9762 int err;
9763
9764 wdev = dev->ieee80211_ptr;
9765
9766 if (!rdev->ops->set_power_mgmt)
9767 return -EOPNOTSUPP;
9768
9769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9770 if (!msg)
9771 return -ENOMEM;
9772
9773 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9774 NL80211_CMD_GET_POWER_SAVE);
9775 if (!hdr) {
9776 err = -ENOBUFS;
9777 goto free_msg;
9778 }
9779
9780 if (wdev->ps)
9781 ps_state = NL80211_PS_ENABLED;
9782 else
9783 ps_state = NL80211_PS_DISABLED;
9784
9785 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9786 goto nla_put_failure;
9787
9788 genlmsg_end(msg, hdr);
9789 return genlmsg_reply(msg, info);
9790
9791 nla_put_failure:
9792 err = -ENOBUFS;
9793 free_msg:
9794 nlmsg_free(msg);
9795 return err;
9796 }
9797
9798 static const struct nla_policy
9799 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9800 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9801 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9802 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9803 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9804 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9805 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9806 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9807 };
9808
9809 static int nl80211_set_cqm_txe(struct genl_info *info,
9810 u32 rate, u32 pkts, u32 intvl)
9811 {
9812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9813 struct net_device *dev = info->user_ptr[1];
9814 struct wireless_dev *wdev = dev->ieee80211_ptr;
9815
9816 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9817 return -EINVAL;
9818
9819 if (!rdev->ops->set_cqm_txe_config)
9820 return -EOPNOTSUPP;
9821
9822 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9823 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9824 return -EOPNOTSUPP;
9825
9826 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9827 }
9828
9829 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9830 struct net_device *dev)
9831 {
9832 struct wireless_dev *wdev = dev->ieee80211_ptr;
9833 s32 last, low, high;
9834 u32 hyst;
9835 int i, n, low_index;
9836 int err;
9837
9838 /* RSSI reporting disabled? */
9839 if (!wdev->cqm_config)
9840 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9841
9842 /*
9843 * Obtain current RSSI value if possible, if not and no RSSI threshold
9844 * event has been received yet, we should receive an event after a
9845 * connection is established and enough beacons received to calculate
9846 * the average.
9847 */
9848 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9849 rdev->ops->get_station) {
9850 struct station_info sinfo = {};
9851 u8 *mac_addr;
9852
9853 mac_addr = wdev->current_bss->pub.bssid;
9854
9855 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9856 if (err)
9857 return err;
9858
9859 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9860 wdev->cqm_config->last_rssi_event_value =
9861 (s8) sinfo.rx_beacon_signal_avg;
9862 }
9863
9864 last = wdev->cqm_config->last_rssi_event_value;
9865 hyst = wdev->cqm_config->rssi_hyst;
9866 n = wdev->cqm_config->n_rssi_thresholds;
9867
9868 for (i = 0; i < n; i++) {
9869 i = array_index_nospec(i, n);
9870 if (last < wdev->cqm_config->rssi_thresholds[i])
9871 break;
9872 }
9873
9874 low_index = i - 1;
9875 if (low_index >= 0) {
9876 low_index = array_index_nospec(low_index, n);
9877 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
9878 } else {
9879 low = S32_MIN;
9880 }
9881 if (i < n) {
9882 i = array_index_nospec(i, n);
9883 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
9884 } else {
9885 high = S32_MAX;
9886 }
9887
9888 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9889 }
9890
9891 static int nl80211_set_cqm_rssi(struct genl_info *info,
9892 const s32 *thresholds, int n_thresholds,
9893 u32 hysteresis)
9894 {
9895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9896 struct net_device *dev = info->user_ptr[1];
9897 struct wireless_dev *wdev = dev->ieee80211_ptr;
9898 int i, err;
9899 s32 prev = S32_MIN;
9900
9901 /* Check all values negative and sorted */
9902 for (i = 0; i < n_thresholds; i++) {
9903 if (thresholds[i] > 0 || thresholds[i] <= prev)
9904 return -EINVAL;
9905
9906 prev = thresholds[i];
9907 }
9908
9909 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9910 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9911 return -EOPNOTSUPP;
9912
9913 wdev_lock(wdev);
9914 cfg80211_cqm_config_free(wdev);
9915 wdev_unlock(wdev);
9916
9917 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9918 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9919 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9920
9921 return rdev_set_cqm_rssi_config(rdev, dev,
9922 thresholds[0], hysteresis);
9923 }
9924
9925 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9926 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9927 return -EOPNOTSUPP;
9928
9929 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9930 n_thresholds = 0;
9931
9932 wdev_lock(wdev);
9933 if (n_thresholds) {
9934 struct cfg80211_cqm_config *cqm_config;
9935
9936 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9937 n_thresholds * sizeof(s32), GFP_KERNEL);
9938 if (!cqm_config) {
9939 err = -ENOMEM;
9940 goto unlock;
9941 }
9942
9943 cqm_config->rssi_hyst = hysteresis;
9944 cqm_config->n_rssi_thresholds = n_thresholds;
9945 memcpy(cqm_config->rssi_thresholds, thresholds,
9946 n_thresholds * sizeof(s32));
9947
9948 wdev->cqm_config = cqm_config;
9949 }
9950
9951 err = cfg80211_cqm_rssi_update(rdev, dev);
9952
9953 unlock:
9954 wdev_unlock(wdev);
9955
9956 return err;
9957 }
9958
9959 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9960 {
9961 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9962 struct nlattr *cqm;
9963 int err;
9964
9965 cqm = info->attrs[NL80211_ATTR_CQM];
9966 if (!cqm)
9967 return -EINVAL;
9968
9969 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9970 nl80211_attr_cqm_policy, info->extack);
9971 if (err)
9972 return err;
9973
9974 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9975 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9976 const s32 *thresholds =
9977 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9978 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9979 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9980
9981 if (len % 4)
9982 return -EINVAL;
9983
9984 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9985 hysteresis);
9986 }
9987
9988 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9989 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9990 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9991 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9992 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9993 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9994
9995 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9996 }
9997
9998 return -EINVAL;
9999 }
10000
10001 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10002 {
10003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10004 struct net_device *dev = info->user_ptr[1];
10005 struct ocb_setup setup = {};
10006 int err;
10007
10008 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10009 if (err)
10010 return err;
10011
10012 return cfg80211_join_ocb(rdev, dev, &setup);
10013 }
10014
10015 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10016 {
10017 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10018 struct net_device *dev = info->user_ptr[1];
10019
10020 return cfg80211_leave_ocb(rdev, dev);
10021 }
10022
10023 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10024 {
10025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10026 struct net_device *dev = info->user_ptr[1];
10027 struct mesh_config cfg;
10028 struct mesh_setup setup;
10029 int err;
10030
10031 /* start with default */
10032 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10033 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10034
10035 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10036 /* and parse parameters if given */
10037 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10038 if (err)
10039 return err;
10040 }
10041
10042 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10043 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10044 return -EINVAL;
10045
10046 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10047 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10048
10049 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10050 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10051 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10052 return -EINVAL;
10053
10054 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10055 setup.beacon_interval =
10056 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10057
10058 err = cfg80211_validate_beacon_int(rdev,
10059 NL80211_IFTYPE_MESH_POINT,
10060 setup.beacon_interval);
10061 if (err)
10062 return err;
10063 }
10064
10065 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10066 setup.dtim_period =
10067 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10068 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10069 return -EINVAL;
10070 }
10071
10072 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10073 /* parse additional setup parameters if given */
10074 err = nl80211_parse_mesh_setup(info, &setup);
10075 if (err)
10076 return err;
10077 }
10078
10079 if (setup.user_mpm)
10080 cfg.auto_open_plinks = false;
10081
10082 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10083 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10084 if (err)
10085 return err;
10086 } else {
10087 /* cfg80211_join_mesh() will sort it out */
10088 setup.chandef.chan = NULL;
10089 }
10090
10091 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10092 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10093 int n_rates =
10094 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10095 struct ieee80211_supported_band *sband;
10096
10097 if (!setup.chandef.chan)
10098 return -EINVAL;
10099
10100 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10101
10102 err = ieee80211_get_ratemask(sband, rates, n_rates,
10103 &setup.basic_rates);
10104 if (err)
10105 return err;
10106 }
10107
10108 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10109 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10110 if (err)
10111 return err;
10112
10113 if (!setup.chandef.chan)
10114 return -EINVAL;
10115
10116 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10117 &setup.beacon_rate);
10118 if (err)
10119 return err;
10120 }
10121
10122 setup.userspace_handles_dfs =
10123 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10124
10125 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10126 }
10127
10128 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10129 {
10130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10131 struct net_device *dev = info->user_ptr[1];
10132
10133 return cfg80211_leave_mesh(rdev, dev);
10134 }
10135
10136 #ifdef CONFIG_PM
10137 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10138 struct cfg80211_registered_device *rdev)
10139 {
10140 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10141 struct nlattr *nl_pats, *nl_pat;
10142 int i, pat_len;
10143
10144 if (!wowlan->n_patterns)
10145 return 0;
10146
10147 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10148 if (!nl_pats)
10149 return -ENOBUFS;
10150
10151 for (i = 0; i < wowlan->n_patterns; i++) {
10152 nl_pat = nla_nest_start(msg, i + 1);
10153 if (!nl_pat)
10154 return -ENOBUFS;
10155 pat_len = wowlan->patterns[i].pattern_len;
10156 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10157 wowlan->patterns[i].mask) ||
10158 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10159 wowlan->patterns[i].pattern) ||
10160 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10161 wowlan->patterns[i].pkt_offset))
10162 return -ENOBUFS;
10163 nla_nest_end(msg, nl_pat);
10164 }
10165 nla_nest_end(msg, nl_pats);
10166
10167 return 0;
10168 }
10169
10170 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10171 struct cfg80211_wowlan_tcp *tcp)
10172 {
10173 struct nlattr *nl_tcp;
10174
10175 if (!tcp)
10176 return 0;
10177
10178 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10179 if (!nl_tcp)
10180 return -ENOBUFS;
10181
10182 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10183 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10184 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10185 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10186 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10187 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10188 tcp->payload_len, tcp->payload) ||
10189 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10190 tcp->data_interval) ||
10191 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10192 tcp->wake_len, tcp->wake_data) ||
10193 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10194 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10195 return -ENOBUFS;
10196
10197 if (tcp->payload_seq.len &&
10198 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10199 sizeof(tcp->payload_seq), &tcp->payload_seq))
10200 return -ENOBUFS;
10201
10202 if (tcp->payload_tok.len &&
10203 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10204 sizeof(tcp->payload_tok) + tcp->tokens_size,
10205 &tcp->payload_tok))
10206 return -ENOBUFS;
10207
10208 nla_nest_end(msg, nl_tcp);
10209
10210 return 0;
10211 }
10212
10213 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10214 struct cfg80211_sched_scan_request *req)
10215 {
10216 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10217 int i;
10218
10219 if (!req)
10220 return 0;
10221
10222 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10223 if (!nd)
10224 return -ENOBUFS;
10225
10226 if (req->n_scan_plans == 1 &&
10227 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10228 req->scan_plans[0].interval * 1000))
10229 return -ENOBUFS;
10230
10231 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10232 return -ENOBUFS;
10233
10234 if (req->relative_rssi_set) {
10235 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10236
10237 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10238 req->relative_rssi))
10239 return -ENOBUFS;
10240
10241 rssi_adjust.band = req->rssi_adjust.band;
10242 rssi_adjust.delta = req->rssi_adjust.delta;
10243 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10244 sizeof(rssi_adjust), &rssi_adjust))
10245 return -ENOBUFS;
10246 }
10247
10248 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10249 if (!freqs)
10250 return -ENOBUFS;
10251
10252 for (i = 0; i < req->n_channels; i++) {
10253 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10254 return -ENOBUFS;
10255 }
10256
10257 nla_nest_end(msg, freqs);
10258
10259 if (req->n_match_sets) {
10260 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10261 if (!matches)
10262 return -ENOBUFS;
10263
10264 for (i = 0; i < req->n_match_sets; i++) {
10265 match = nla_nest_start(msg, i);
10266 if (!match)
10267 return -ENOBUFS;
10268
10269 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10270 req->match_sets[i].ssid.ssid_len,
10271 req->match_sets[i].ssid.ssid))
10272 return -ENOBUFS;
10273 nla_nest_end(msg, match);
10274 }
10275 nla_nest_end(msg, matches);
10276 }
10277
10278 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10279 if (!scan_plans)
10280 return -ENOBUFS;
10281
10282 for (i = 0; i < req->n_scan_plans; i++) {
10283 scan_plan = nla_nest_start(msg, i + 1);
10284 if (!scan_plan)
10285 return -ENOBUFS;
10286
10287 if (!scan_plan ||
10288 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10289 req->scan_plans[i].interval) ||
10290 (req->scan_plans[i].iterations &&
10291 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10292 req->scan_plans[i].iterations)))
10293 return -ENOBUFS;
10294 nla_nest_end(msg, scan_plan);
10295 }
10296 nla_nest_end(msg, scan_plans);
10297
10298 nla_nest_end(msg, nd);
10299
10300 return 0;
10301 }
10302
10303 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10304 {
10305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10306 struct sk_buff *msg;
10307 void *hdr;
10308 u32 size = NLMSG_DEFAULT_SIZE;
10309
10310 if (!rdev->wiphy.wowlan)
10311 return -EOPNOTSUPP;
10312
10313 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10314 /* adjust size to have room for all the data */
10315 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10316 rdev->wiphy.wowlan_config->tcp->payload_len +
10317 rdev->wiphy.wowlan_config->tcp->wake_len +
10318 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10319 }
10320
10321 msg = nlmsg_new(size, GFP_KERNEL);
10322 if (!msg)
10323 return -ENOMEM;
10324
10325 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10326 NL80211_CMD_GET_WOWLAN);
10327 if (!hdr)
10328 goto nla_put_failure;
10329
10330 if (rdev->wiphy.wowlan_config) {
10331 struct nlattr *nl_wowlan;
10332
10333 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10334 if (!nl_wowlan)
10335 goto nla_put_failure;
10336
10337 if ((rdev->wiphy.wowlan_config->any &&
10338 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10339 (rdev->wiphy.wowlan_config->disconnect &&
10340 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10341 (rdev->wiphy.wowlan_config->magic_pkt &&
10342 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10343 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10344 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10345 (rdev->wiphy.wowlan_config->eap_identity_req &&
10346 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10347 (rdev->wiphy.wowlan_config->four_way_handshake &&
10348 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10349 (rdev->wiphy.wowlan_config->rfkill_release &&
10350 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10351 goto nla_put_failure;
10352
10353 if (nl80211_send_wowlan_patterns(msg, rdev))
10354 goto nla_put_failure;
10355
10356 if (nl80211_send_wowlan_tcp(msg,
10357 rdev->wiphy.wowlan_config->tcp))
10358 goto nla_put_failure;
10359
10360 if (nl80211_send_wowlan_nd(
10361 msg,
10362 rdev->wiphy.wowlan_config->nd_config))
10363 goto nla_put_failure;
10364
10365 nla_nest_end(msg, nl_wowlan);
10366 }
10367
10368 genlmsg_end(msg, hdr);
10369 return genlmsg_reply(msg, info);
10370
10371 nla_put_failure:
10372 nlmsg_free(msg);
10373 return -ENOBUFS;
10374 }
10375
10376 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10377 struct nlattr *attr,
10378 struct cfg80211_wowlan *trig)
10379 {
10380 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10381 struct cfg80211_wowlan_tcp *cfg;
10382 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10383 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10384 u32 size;
10385 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10386 int err, port;
10387
10388 if (!rdev->wiphy.wowlan->tcp)
10389 return -EINVAL;
10390
10391 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10392 nl80211_wowlan_tcp_policy, NULL);
10393 if (err)
10394 return err;
10395
10396 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10397 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10398 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10399 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10400 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10401 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10402 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10403 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10404 return -EINVAL;
10405
10406 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10407 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10408 return -EINVAL;
10409
10410 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10411 rdev->wiphy.wowlan->tcp->data_interval_max ||
10412 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10413 return -EINVAL;
10414
10415 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10416 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10417 return -EINVAL;
10418
10419 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10420 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10421 return -EINVAL;
10422
10423 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10424 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10425
10426 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10427 tokens_size = tokln - sizeof(*tok);
10428
10429 if (!tok->len || tokens_size % tok->len)
10430 return -EINVAL;
10431 if (!rdev->wiphy.wowlan->tcp->tok)
10432 return -EINVAL;
10433 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10434 return -EINVAL;
10435 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10436 return -EINVAL;
10437 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10438 return -EINVAL;
10439 if (tok->offset + tok->len > data_size)
10440 return -EINVAL;
10441 }
10442
10443 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10444 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10445 if (!rdev->wiphy.wowlan->tcp->seq)
10446 return -EINVAL;
10447 if (seq->len == 0 || seq->len > 4)
10448 return -EINVAL;
10449 if (seq->len + seq->offset > data_size)
10450 return -EINVAL;
10451 }
10452
10453 size = sizeof(*cfg);
10454 size += data_size;
10455 size += wake_size + wake_mask_size;
10456 size += tokens_size;
10457
10458 cfg = kzalloc(size, GFP_KERNEL);
10459 if (!cfg)
10460 return -ENOMEM;
10461 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10462 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10463 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10464 ETH_ALEN);
10465 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10466 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10467 else
10468 port = 0;
10469 #ifdef CONFIG_INET
10470 /* allocate a socket and port for it and use it */
10471 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10472 IPPROTO_TCP, &cfg->sock, 1);
10473 if (err) {
10474 kfree(cfg);
10475 return err;
10476 }
10477 if (inet_csk_get_port(cfg->sock->sk, port)) {
10478 sock_release(cfg->sock);
10479 kfree(cfg);
10480 return -EADDRINUSE;
10481 }
10482 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10483 #else
10484 if (!port) {
10485 kfree(cfg);
10486 return -EINVAL;
10487 }
10488 cfg->src_port = port;
10489 #endif
10490
10491 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10492 cfg->payload_len = data_size;
10493 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10494 memcpy((void *)cfg->payload,
10495 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10496 data_size);
10497 if (seq)
10498 cfg->payload_seq = *seq;
10499 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10500 cfg->wake_len = wake_size;
10501 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10502 memcpy((void *)cfg->wake_data,
10503 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10504 wake_size);
10505 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10506 data_size + wake_size;
10507 memcpy((void *)cfg->wake_mask,
10508 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10509 wake_mask_size);
10510 if (tok) {
10511 cfg->tokens_size = tokens_size;
10512 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10513 }
10514
10515 trig->tcp = cfg;
10516
10517 return 0;
10518 }
10519
10520 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10521 const struct wiphy_wowlan_support *wowlan,
10522 struct nlattr *attr,
10523 struct cfg80211_wowlan *trig)
10524 {
10525 struct nlattr **tb;
10526 int err;
10527
10528 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10529 if (!tb)
10530 return -ENOMEM;
10531
10532 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10533 err = -EOPNOTSUPP;
10534 goto out;
10535 }
10536
10537 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10538 NULL);
10539 if (err)
10540 goto out;
10541
10542 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10543 wowlan->max_nd_match_sets);
10544 err = PTR_ERR_OR_ZERO(trig->nd_config);
10545 if (err)
10546 trig->nd_config = NULL;
10547
10548 out:
10549 kfree(tb);
10550 return err;
10551 }
10552
10553 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10554 {
10555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10556 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10557 struct cfg80211_wowlan new_triggers = {};
10558 struct cfg80211_wowlan *ntrig;
10559 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10560 int err, i;
10561 bool prev_enabled = rdev->wiphy.wowlan_config;
10562 bool regular = false;
10563
10564 if (!wowlan)
10565 return -EOPNOTSUPP;
10566
10567 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10568 cfg80211_rdev_free_wowlan(rdev);
10569 rdev->wiphy.wowlan_config = NULL;
10570 goto set_wakeup;
10571 }
10572
10573 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10574 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10575 nl80211_wowlan_policy, info->extack);
10576 if (err)
10577 return err;
10578
10579 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10580 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10581 return -EINVAL;
10582 new_triggers.any = true;
10583 }
10584
10585 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10586 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10587 return -EINVAL;
10588 new_triggers.disconnect = true;
10589 regular = true;
10590 }
10591
10592 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10593 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10594 return -EINVAL;
10595 new_triggers.magic_pkt = true;
10596 regular = true;
10597 }
10598
10599 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10600 return -EINVAL;
10601
10602 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10603 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10604 return -EINVAL;
10605 new_triggers.gtk_rekey_failure = true;
10606 regular = true;
10607 }
10608
10609 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10610 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10611 return -EINVAL;
10612 new_triggers.eap_identity_req = true;
10613 regular = true;
10614 }
10615
10616 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10617 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10618 return -EINVAL;
10619 new_triggers.four_way_handshake = true;
10620 regular = true;
10621 }
10622
10623 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10624 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10625 return -EINVAL;
10626 new_triggers.rfkill_release = true;
10627 regular = true;
10628 }
10629
10630 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10631 struct nlattr *pat;
10632 int n_patterns = 0;
10633 int rem, pat_len, mask_len, pkt_offset;
10634 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10635
10636 regular = true;
10637
10638 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10639 rem)
10640 n_patterns++;
10641 if (n_patterns > wowlan->n_patterns)
10642 return -EINVAL;
10643
10644 new_triggers.patterns = kcalloc(n_patterns,
10645 sizeof(new_triggers.patterns[0]),
10646 GFP_KERNEL);
10647 if (!new_triggers.patterns)
10648 return -ENOMEM;
10649
10650 new_triggers.n_patterns = n_patterns;
10651 i = 0;
10652
10653 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10654 rem) {
10655 u8 *mask_pat;
10656
10657 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10658 nl80211_packet_pattern_policy,
10659 info->extack);
10660 if (err)
10661 goto error;
10662
10663 err = -EINVAL;
10664 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10665 !pat_tb[NL80211_PKTPAT_PATTERN])
10666 goto error;
10667 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10668 mask_len = DIV_ROUND_UP(pat_len, 8);
10669 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10670 goto error;
10671 if (pat_len > wowlan->pattern_max_len ||
10672 pat_len < wowlan->pattern_min_len)
10673 goto error;
10674
10675 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10676 pkt_offset = 0;
10677 else
10678 pkt_offset = nla_get_u32(
10679 pat_tb[NL80211_PKTPAT_OFFSET]);
10680 if (pkt_offset > wowlan->max_pkt_offset)
10681 goto error;
10682 new_triggers.patterns[i].pkt_offset = pkt_offset;
10683
10684 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10685 if (!mask_pat) {
10686 err = -ENOMEM;
10687 goto error;
10688 }
10689 new_triggers.patterns[i].mask = mask_pat;
10690 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10691 mask_len);
10692 mask_pat += mask_len;
10693 new_triggers.patterns[i].pattern = mask_pat;
10694 new_triggers.patterns[i].pattern_len = pat_len;
10695 memcpy(mask_pat,
10696 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10697 pat_len);
10698 i++;
10699 }
10700 }
10701
10702 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10703 regular = true;
10704 err = nl80211_parse_wowlan_tcp(
10705 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10706 &new_triggers);
10707 if (err)
10708 goto error;
10709 }
10710
10711 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10712 regular = true;
10713 err = nl80211_parse_wowlan_nd(
10714 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10715 &new_triggers);
10716 if (err)
10717 goto error;
10718 }
10719
10720 /* The 'any' trigger means the device continues operating more or less
10721 * as in its normal operation mode and wakes up the host on most of the
10722 * normal interrupts (like packet RX, ...)
10723 * It therefore makes little sense to combine with the more constrained
10724 * wakeup trigger modes.
10725 */
10726 if (new_triggers.any && regular) {
10727 err = -EINVAL;
10728 goto error;
10729 }
10730
10731 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10732 if (!ntrig) {
10733 err = -ENOMEM;
10734 goto error;
10735 }
10736 cfg80211_rdev_free_wowlan(rdev);
10737 rdev->wiphy.wowlan_config = ntrig;
10738
10739 set_wakeup:
10740 if (rdev->ops->set_wakeup &&
10741 prev_enabled != !!rdev->wiphy.wowlan_config)
10742 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10743
10744 return 0;
10745 error:
10746 for (i = 0; i < new_triggers.n_patterns; i++)
10747 kfree(new_triggers.patterns[i].mask);
10748 kfree(new_triggers.patterns);
10749 if (new_triggers.tcp && new_triggers.tcp->sock)
10750 sock_release(new_triggers.tcp->sock);
10751 kfree(new_triggers.tcp);
10752 kfree(new_triggers.nd_config);
10753 return err;
10754 }
10755 #endif
10756
10757 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10758 struct cfg80211_registered_device *rdev)
10759 {
10760 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10761 int i, j, pat_len;
10762 struct cfg80211_coalesce_rules *rule;
10763
10764 if (!rdev->coalesce->n_rules)
10765 return 0;
10766
10767 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10768 if (!nl_rules)
10769 return -ENOBUFS;
10770
10771 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10772 nl_rule = nla_nest_start(msg, i + 1);
10773 if (!nl_rule)
10774 return -ENOBUFS;
10775
10776 rule = &rdev->coalesce->rules[i];
10777 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10778 rule->delay))
10779 return -ENOBUFS;
10780
10781 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10782 rule->condition))
10783 return -ENOBUFS;
10784
10785 nl_pats = nla_nest_start(msg,
10786 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10787 if (!nl_pats)
10788 return -ENOBUFS;
10789
10790 for (j = 0; j < rule->n_patterns; j++) {
10791 nl_pat = nla_nest_start(msg, j + 1);
10792 if (!nl_pat)
10793 return -ENOBUFS;
10794 pat_len = rule->patterns[j].pattern_len;
10795 if (nla_put(msg, NL80211_PKTPAT_MASK,
10796 DIV_ROUND_UP(pat_len, 8),
10797 rule->patterns[j].mask) ||
10798 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10799 rule->patterns[j].pattern) ||
10800 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10801 rule->patterns[j].pkt_offset))
10802 return -ENOBUFS;
10803 nla_nest_end(msg, nl_pat);
10804 }
10805 nla_nest_end(msg, nl_pats);
10806 nla_nest_end(msg, nl_rule);
10807 }
10808 nla_nest_end(msg, nl_rules);
10809
10810 return 0;
10811 }
10812
10813 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10814 {
10815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10816 struct sk_buff *msg;
10817 void *hdr;
10818
10819 if (!rdev->wiphy.coalesce)
10820 return -EOPNOTSUPP;
10821
10822 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10823 if (!msg)
10824 return -ENOMEM;
10825
10826 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10827 NL80211_CMD_GET_COALESCE);
10828 if (!hdr)
10829 goto nla_put_failure;
10830
10831 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10832 goto nla_put_failure;
10833
10834 genlmsg_end(msg, hdr);
10835 return genlmsg_reply(msg, info);
10836
10837 nla_put_failure:
10838 nlmsg_free(msg);
10839 return -ENOBUFS;
10840 }
10841
10842 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10843 {
10844 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10845 int i, j;
10846 struct cfg80211_coalesce_rules *rule;
10847
10848 if (!coalesce)
10849 return;
10850
10851 for (i = 0; i < coalesce->n_rules; i++) {
10852 rule = &coalesce->rules[i];
10853 for (j = 0; j < rule->n_patterns; j++)
10854 kfree(rule->patterns[j].mask);
10855 kfree(rule->patterns);
10856 }
10857 kfree(coalesce->rules);
10858 kfree(coalesce);
10859 rdev->coalesce = NULL;
10860 }
10861
10862 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10863 struct nlattr *rule,
10864 struct cfg80211_coalesce_rules *new_rule)
10865 {
10866 int err, i;
10867 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10868 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10869 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10870 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10871
10872 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10873 nl80211_coalesce_policy, NULL);
10874 if (err)
10875 return err;
10876
10877 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10878 new_rule->delay =
10879 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10880 if (new_rule->delay > coalesce->max_delay)
10881 return -EINVAL;
10882
10883 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10884 new_rule->condition =
10885 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10886 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10887 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10888 return -EINVAL;
10889
10890 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10891 return -EINVAL;
10892
10893 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10894 rem)
10895 n_patterns++;
10896 if (n_patterns > coalesce->n_patterns)
10897 return -EINVAL;
10898
10899 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10900 GFP_KERNEL);
10901 if (!new_rule->patterns)
10902 return -ENOMEM;
10903
10904 new_rule->n_patterns = n_patterns;
10905 i = 0;
10906
10907 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10908 rem) {
10909 u8 *mask_pat;
10910
10911 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10912 nl80211_packet_pattern_policy, NULL);
10913 if (err)
10914 return err;
10915
10916 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10917 !pat_tb[NL80211_PKTPAT_PATTERN])
10918 return -EINVAL;
10919 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10920 mask_len = DIV_ROUND_UP(pat_len, 8);
10921 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10922 return -EINVAL;
10923 if (pat_len > coalesce->pattern_max_len ||
10924 pat_len < coalesce->pattern_min_len)
10925 return -EINVAL;
10926
10927 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10928 pkt_offset = 0;
10929 else
10930 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10931 if (pkt_offset > coalesce->max_pkt_offset)
10932 return -EINVAL;
10933 new_rule->patterns[i].pkt_offset = pkt_offset;
10934
10935 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10936 if (!mask_pat)
10937 return -ENOMEM;
10938
10939 new_rule->patterns[i].mask = mask_pat;
10940 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10941 mask_len);
10942
10943 mask_pat += mask_len;
10944 new_rule->patterns[i].pattern = mask_pat;
10945 new_rule->patterns[i].pattern_len = pat_len;
10946 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10947 pat_len);
10948 i++;
10949 }
10950
10951 return 0;
10952 }
10953
10954 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10955 {
10956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10957 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10958 struct cfg80211_coalesce new_coalesce = {};
10959 struct cfg80211_coalesce *n_coalesce;
10960 int err, rem_rule, n_rules = 0, i, j;
10961 struct nlattr *rule;
10962 struct cfg80211_coalesce_rules *tmp_rule;
10963
10964 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10965 return -EOPNOTSUPP;
10966
10967 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10968 cfg80211_rdev_free_coalesce(rdev);
10969 rdev_set_coalesce(rdev, NULL);
10970 return 0;
10971 }
10972
10973 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10974 rem_rule)
10975 n_rules++;
10976 if (n_rules > coalesce->n_rules)
10977 return -EINVAL;
10978
10979 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10980 GFP_KERNEL);
10981 if (!new_coalesce.rules)
10982 return -ENOMEM;
10983
10984 new_coalesce.n_rules = n_rules;
10985 i = 0;
10986
10987 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10988 rem_rule) {
10989 err = nl80211_parse_coalesce_rule(rdev, rule,
10990 &new_coalesce.rules[i]);
10991 if (err)
10992 goto error;
10993
10994 i++;
10995 }
10996
10997 err = rdev_set_coalesce(rdev, &new_coalesce);
10998 if (err)
10999 goto error;
11000
11001 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11002 if (!n_coalesce) {
11003 err = -ENOMEM;
11004 goto error;
11005 }
11006 cfg80211_rdev_free_coalesce(rdev);
11007 rdev->coalesce = n_coalesce;
11008
11009 return 0;
11010 error:
11011 for (i = 0; i < new_coalesce.n_rules; i++) {
11012 tmp_rule = &new_coalesce.rules[i];
11013 for (j = 0; j < tmp_rule->n_patterns; j++)
11014 kfree(tmp_rule->patterns[j].mask);
11015 kfree(tmp_rule->patterns);
11016 }
11017 kfree(new_coalesce.rules);
11018
11019 return err;
11020 }
11021
11022 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11023 {
11024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11025 struct net_device *dev = info->user_ptr[1];
11026 struct wireless_dev *wdev = dev->ieee80211_ptr;
11027 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11028 struct cfg80211_gtk_rekey_data rekey_data;
11029 int err;
11030
11031 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11032 return -EINVAL;
11033
11034 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11035 info->attrs[NL80211_ATTR_REKEY_DATA],
11036 nl80211_rekey_policy, info->extack);
11037 if (err)
11038 return err;
11039
11040 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11041 !tb[NL80211_REKEY_DATA_KCK])
11042 return -EINVAL;
11043 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11044 return -ERANGE;
11045 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11046 return -ERANGE;
11047 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11048 return -ERANGE;
11049
11050 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11051 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11052 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11053
11054 wdev_lock(wdev);
11055 if (!wdev->current_bss) {
11056 err = -ENOTCONN;
11057 goto out;
11058 }
11059
11060 if (!rdev->ops->set_rekey_data) {
11061 err = -EOPNOTSUPP;
11062 goto out;
11063 }
11064
11065 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11066 out:
11067 wdev_unlock(wdev);
11068 return err;
11069 }
11070
11071 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11072 struct genl_info *info)
11073 {
11074 struct net_device *dev = info->user_ptr[1];
11075 struct wireless_dev *wdev = dev->ieee80211_ptr;
11076
11077 if (wdev->iftype != NL80211_IFTYPE_AP &&
11078 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11079 return -EINVAL;
11080
11081 if (wdev->ap_unexpected_nlportid)
11082 return -EBUSY;
11083
11084 wdev->ap_unexpected_nlportid = info->snd_portid;
11085 return 0;
11086 }
11087
11088 static int nl80211_probe_client(struct sk_buff *skb,
11089 struct genl_info *info)
11090 {
11091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11092 struct net_device *dev = info->user_ptr[1];
11093 struct wireless_dev *wdev = dev->ieee80211_ptr;
11094 struct sk_buff *msg;
11095 void *hdr;
11096 const u8 *addr;
11097 u64 cookie;
11098 int err;
11099
11100 if (wdev->iftype != NL80211_IFTYPE_AP &&
11101 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11102 return -EOPNOTSUPP;
11103
11104 if (!info->attrs[NL80211_ATTR_MAC])
11105 return -EINVAL;
11106
11107 if (!rdev->ops->probe_client)
11108 return -EOPNOTSUPP;
11109
11110 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11111 if (!msg)
11112 return -ENOMEM;
11113
11114 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11115 NL80211_CMD_PROBE_CLIENT);
11116 if (!hdr) {
11117 err = -ENOBUFS;
11118 goto free_msg;
11119 }
11120
11121 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11122
11123 err = rdev_probe_client(rdev, dev, addr, &cookie);
11124 if (err)
11125 goto free_msg;
11126
11127 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11128 NL80211_ATTR_PAD))
11129 goto nla_put_failure;
11130
11131 genlmsg_end(msg, hdr);
11132
11133 return genlmsg_reply(msg, info);
11134
11135 nla_put_failure:
11136 err = -ENOBUFS;
11137 free_msg:
11138 nlmsg_free(msg);
11139 return err;
11140 }
11141
11142 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11143 {
11144 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11145 struct cfg80211_beacon_registration *reg, *nreg;
11146 int rv;
11147
11148 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11149 return -EOPNOTSUPP;
11150
11151 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11152 if (!nreg)
11153 return -ENOMEM;
11154
11155 /* First, check if already registered. */
11156 spin_lock_bh(&rdev->beacon_registrations_lock);
11157 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11158 if (reg->nlportid == info->snd_portid) {
11159 rv = -EALREADY;
11160 goto out_err;
11161 }
11162 }
11163 /* Add it to the list */
11164 nreg->nlportid = info->snd_portid;
11165 list_add(&nreg->list, &rdev->beacon_registrations);
11166
11167 spin_unlock_bh(&rdev->beacon_registrations_lock);
11168
11169 return 0;
11170 out_err:
11171 spin_unlock_bh(&rdev->beacon_registrations_lock);
11172 kfree(nreg);
11173 return rv;
11174 }
11175
11176 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11177 {
11178 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11179 struct wireless_dev *wdev = info->user_ptr[1];
11180 int err;
11181
11182 if (!rdev->ops->start_p2p_device)
11183 return -EOPNOTSUPP;
11184
11185 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11186 return -EOPNOTSUPP;
11187
11188 if (wdev_running(wdev))
11189 return 0;
11190
11191 if (rfkill_blocked(rdev->rfkill))
11192 return -ERFKILL;
11193
11194 err = rdev_start_p2p_device(rdev, wdev);
11195 if (err)
11196 return err;
11197
11198 wdev->is_running = true;
11199 rdev->opencount++;
11200
11201 return 0;
11202 }
11203
11204 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11205 {
11206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11207 struct wireless_dev *wdev = info->user_ptr[1];
11208
11209 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11210 return -EOPNOTSUPP;
11211
11212 if (!rdev->ops->stop_p2p_device)
11213 return -EOPNOTSUPP;
11214
11215 cfg80211_stop_p2p_device(rdev, wdev);
11216
11217 return 0;
11218 }
11219
11220 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11221 {
11222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11223 struct wireless_dev *wdev = info->user_ptr[1];
11224 struct cfg80211_nan_conf conf = {};
11225 int err;
11226
11227 if (wdev->iftype != NL80211_IFTYPE_NAN)
11228 return -EOPNOTSUPP;
11229
11230 if (wdev_running(wdev))
11231 return -EEXIST;
11232
11233 if (rfkill_blocked(rdev->rfkill))
11234 return -ERFKILL;
11235
11236 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11237 return -EINVAL;
11238
11239 conf.master_pref =
11240 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11241 if (!conf.master_pref)
11242 return -EINVAL;
11243
11244 if (info->attrs[NL80211_ATTR_BANDS]) {
11245 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11246
11247 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11248 return -EOPNOTSUPP;
11249
11250 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11251 return -EINVAL;
11252
11253 conf.bands = bands;
11254 }
11255
11256 err = rdev_start_nan(rdev, wdev, &conf);
11257 if (err)
11258 return err;
11259
11260 wdev->is_running = true;
11261 rdev->opencount++;
11262
11263 return 0;
11264 }
11265
11266 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11267 {
11268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11269 struct wireless_dev *wdev = info->user_ptr[1];
11270
11271 if (wdev->iftype != NL80211_IFTYPE_NAN)
11272 return -EOPNOTSUPP;
11273
11274 cfg80211_stop_nan(rdev, wdev);
11275
11276 return 0;
11277 }
11278
11279 static int validate_nan_filter(struct nlattr *filter_attr)
11280 {
11281 struct nlattr *attr;
11282 int len = 0, n_entries = 0, rem;
11283
11284 nla_for_each_nested(attr, filter_attr, rem) {
11285 len += nla_len(attr);
11286 n_entries++;
11287 }
11288
11289 if (len >= U8_MAX)
11290 return -EINVAL;
11291
11292 return n_entries;
11293 }
11294
11295 static int handle_nan_filter(struct nlattr *attr_filter,
11296 struct cfg80211_nan_func *func,
11297 bool tx)
11298 {
11299 struct nlattr *attr;
11300 int n_entries, rem, i;
11301 struct cfg80211_nan_func_filter *filter;
11302
11303 n_entries = validate_nan_filter(attr_filter);
11304 if (n_entries < 0)
11305 return n_entries;
11306
11307 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11308
11309 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11310 if (!filter)
11311 return -ENOMEM;
11312
11313 i = 0;
11314 nla_for_each_nested(attr, attr_filter, rem) {
11315 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11316 filter[i].len = nla_len(attr);
11317 i++;
11318 }
11319 if (tx) {
11320 func->num_tx_filters = n_entries;
11321 func->tx_filters = filter;
11322 } else {
11323 func->num_rx_filters = n_entries;
11324 func->rx_filters = filter;
11325 }
11326
11327 return 0;
11328 }
11329
11330 static int nl80211_nan_add_func(struct sk_buff *skb,
11331 struct genl_info *info)
11332 {
11333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11334 struct wireless_dev *wdev = info->user_ptr[1];
11335 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11336 struct cfg80211_nan_func *func;
11337 struct sk_buff *msg = NULL;
11338 void *hdr = NULL;
11339 int err = 0;
11340
11341 if (wdev->iftype != NL80211_IFTYPE_NAN)
11342 return -EOPNOTSUPP;
11343
11344 if (!wdev_running(wdev))
11345 return -ENOTCONN;
11346
11347 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11348 return -EINVAL;
11349
11350 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11351 info->attrs[NL80211_ATTR_NAN_FUNC],
11352 nl80211_nan_func_policy, info->extack);
11353 if (err)
11354 return err;
11355
11356 func = kzalloc(sizeof(*func), GFP_KERNEL);
11357 if (!func)
11358 return -ENOMEM;
11359
11360 func->cookie = wdev->wiphy->cookie_counter++;
11361
11362 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11363 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11364 err = -EINVAL;
11365 goto out;
11366 }
11367
11368
11369 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11370
11371 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11372 err = -EINVAL;
11373 goto out;
11374 }
11375
11376 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11377 sizeof(func->service_id));
11378
11379 func->close_range =
11380 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11381
11382 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11383 func->serv_spec_info_len =
11384 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11385 func->serv_spec_info =
11386 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11387 func->serv_spec_info_len,
11388 GFP_KERNEL);
11389 if (!func->serv_spec_info) {
11390 err = -ENOMEM;
11391 goto out;
11392 }
11393 }
11394
11395 if (tb[NL80211_NAN_FUNC_TTL])
11396 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11397
11398 switch (func->type) {
11399 case NL80211_NAN_FUNC_PUBLISH:
11400 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11401 err = -EINVAL;
11402 goto out;
11403 }
11404
11405 func->publish_type =
11406 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11407 func->publish_bcast =
11408 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11409
11410 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11411 func->publish_bcast) {
11412 err = -EINVAL;
11413 goto out;
11414 }
11415 break;
11416 case NL80211_NAN_FUNC_SUBSCRIBE:
11417 func->subscribe_active =
11418 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11419 break;
11420 case NL80211_NAN_FUNC_FOLLOW_UP:
11421 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11422 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11423 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11424 err = -EINVAL;
11425 goto out;
11426 }
11427
11428 func->followup_id =
11429 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11430 func->followup_reqid =
11431 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11432 memcpy(func->followup_dest.addr,
11433 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11434 sizeof(func->followup_dest.addr));
11435 if (func->ttl) {
11436 err = -EINVAL;
11437 goto out;
11438 }
11439 break;
11440 default:
11441 err = -EINVAL;
11442 goto out;
11443 }
11444
11445 if (tb[NL80211_NAN_FUNC_SRF]) {
11446 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11447
11448 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11449 tb[NL80211_NAN_FUNC_SRF],
11450 nl80211_nan_srf_policy, info->extack);
11451 if (err)
11452 goto out;
11453
11454 func->srf_include =
11455 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11456
11457 if (srf_tb[NL80211_NAN_SRF_BF]) {
11458 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11459 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11460 err = -EINVAL;
11461 goto out;
11462 }
11463
11464 func->srf_bf_len =
11465 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11466 func->srf_bf =
11467 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11468 func->srf_bf_len, GFP_KERNEL);
11469 if (!func->srf_bf) {
11470 err = -ENOMEM;
11471 goto out;
11472 }
11473
11474 func->srf_bf_idx =
11475 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11476 } else {
11477 struct nlattr *attr, *mac_attr =
11478 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11479 int n_entries, rem, i = 0;
11480
11481 if (!mac_attr) {
11482 err = -EINVAL;
11483 goto out;
11484 }
11485
11486 n_entries = validate_acl_mac_addrs(mac_attr);
11487 if (n_entries <= 0) {
11488 err = -EINVAL;
11489 goto out;
11490 }
11491
11492 func->srf_num_macs = n_entries;
11493 func->srf_macs =
11494 kzalloc(sizeof(*func->srf_macs) * n_entries,
11495 GFP_KERNEL);
11496 if (!func->srf_macs) {
11497 err = -ENOMEM;
11498 goto out;
11499 }
11500
11501 nla_for_each_nested(attr, mac_attr, rem)
11502 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11503 sizeof(*func->srf_macs));
11504 }
11505 }
11506
11507 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11508 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11509 func, true);
11510 if (err)
11511 goto out;
11512 }
11513
11514 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11515 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11516 func, false);
11517 if (err)
11518 goto out;
11519 }
11520
11521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11522 if (!msg) {
11523 err = -ENOMEM;
11524 goto out;
11525 }
11526
11527 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11528 NL80211_CMD_ADD_NAN_FUNCTION);
11529 /* This can't really happen - we just allocated 4KB */
11530 if (WARN_ON(!hdr)) {
11531 err = -ENOMEM;
11532 goto out;
11533 }
11534
11535 err = rdev_add_nan_func(rdev, wdev, func);
11536 out:
11537 if (err < 0) {
11538 cfg80211_free_nan_func(func);
11539 nlmsg_free(msg);
11540 return err;
11541 }
11542
11543 /* propagate the instance id and cookie to userspace */
11544 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11545 NL80211_ATTR_PAD))
11546 goto nla_put_failure;
11547
11548 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11549 if (!func_attr)
11550 goto nla_put_failure;
11551
11552 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11553 func->instance_id))
11554 goto nla_put_failure;
11555
11556 nla_nest_end(msg, func_attr);
11557
11558 genlmsg_end(msg, hdr);
11559 return genlmsg_reply(msg, info);
11560
11561 nla_put_failure:
11562 nlmsg_free(msg);
11563 return -ENOBUFS;
11564 }
11565
11566 static int nl80211_nan_del_func(struct sk_buff *skb,
11567 struct genl_info *info)
11568 {
11569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11570 struct wireless_dev *wdev = info->user_ptr[1];
11571 u64 cookie;
11572
11573 if (wdev->iftype != NL80211_IFTYPE_NAN)
11574 return -EOPNOTSUPP;
11575
11576 if (!wdev_running(wdev))
11577 return -ENOTCONN;
11578
11579 if (!info->attrs[NL80211_ATTR_COOKIE])
11580 return -EINVAL;
11581
11582 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11583
11584 rdev_del_nan_func(rdev, wdev, cookie);
11585
11586 return 0;
11587 }
11588
11589 static int nl80211_nan_change_config(struct sk_buff *skb,
11590 struct genl_info *info)
11591 {
11592 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11593 struct wireless_dev *wdev = info->user_ptr[1];
11594 struct cfg80211_nan_conf conf = {};
11595 u32 changed = 0;
11596
11597 if (wdev->iftype != NL80211_IFTYPE_NAN)
11598 return -EOPNOTSUPP;
11599
11600 if (!wdev_running(wdev))
11601 return -ENOTCONN;
11602
11603 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11604 conf.master_pref =
11605 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11606 if (conf.master_pref <= 1 || conf.master_pref == 255)
11607 return -EINVAL;
11608
11609 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11610 }
11611
11612 if (info->attrs[NL80211_ATTR_BANDS]) {
11613 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11614
11615 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11616 return -EOPNOTSUPP;
11617
11618 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11619 return -EINVAL;
11620
11621 conf.bands = bands;
11622 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11623 }
11624
11625 if (!changed)
11626 return -EINVAL;
11627
11628 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11629 }
11630
11631 void cfg80211_nan_match(struct wireless_dev *wdev,
11632 struct cfg80211_nan_match_params *match, gfp_t gfp)
11633 {
11634 struct wiphy *wiphy = wdev->wiphy;
11635 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11636 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11637 struct sk_buff *msg;
11638 void *hdr;
11639
11640 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11641 return;
11642
11643 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11644 if (!msg)
11645 return;
11646
11647 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11648 if (!hdr) {
11649 nlmsg_free(msg);
11650 return;
11651 }
11652
11653 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11654 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11655 wdev->netdev->ifindex)) ||
11656 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11657 NL80211_ATTR_PAD))
11658 goto nla_put_failure;
11659
11660 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11661 NL80211_ATTR_PAD) ||
11662 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11663 goto nla_put_failure;
11664
11665 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11666 if (!match_attr)
11667 goto nla_put_failure;
11668
11669 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11670 if (!local_func_attr)
11671 goto nla_put_failure;
11672
11673 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11674 goto nla_put_failure;
11675
11676 nla_nest_end(msg, local_func_attr);
11677
11678 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11679 if (!peer_func_attr)
11680 goto nla_put_failure;
11681
11682 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11683 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11684 goto nla_put_failure;
11685
11686 if (match->info && match->info_len &&
11687 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11688 match->info))
11689 goto nla_put_failure;
11690
11691 nla_nest_end(msg, peer_func_attr);
11692 nla_nest_end(msg, match_attr);
11693 genlmsg_end(msg, hdr);
11694
11695 if (!wdev->owner_nlportid)
11696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11697 msg, 0, NL80211_MCGRP_NAN, gfp);
11698 else
11699 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11700 wdev->owner_nlportid);
11701
11702 return;
11703
11704 nla_put_failure:
11705 nlmsg_free(msg);
11706 }
11707 EXPORT_SYMBOL(cfg80211_nan_match);
11708
11709 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11710 u8 inst_id,
11711 enum nl80211_nan_func_term_reason reason,
11712 u64 cookie, gfp_t gfp)
11713 {
11714 struct wiphy *wiphy = wdev->wiphy;
11715 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11716 struct sk_buff *msg;
11717 struct nlattr *func_attr;
11718 void *hdr;
11719
11720 if (WARN_ON(!inst_id))
11721 return;
11722
11723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11724 if (!msg)
11725 return;
11726
11727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11728 if (!hdr) {
11729 nlmsg_free(msg);
11730 return;
11731 }
11732
11733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11734 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11735 wdev->netdev->ifindex)) ||
11736 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11737 NL80211_ATTR_PAD))
11738 goto nla_put_failure;
11739
11740 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11741 NL80211_ATTR_PAD))
11742 goto nla_put_failure;
11743
11744 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11745 if (!func_attr)
11746 goto nla_put_failure;
11747
11748 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11749 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11750 goto nla_put_failure;
11751
11752 nla_nest_end(msg, func_attr);
11753 genlmsg_end(msg, hdr);
11754
11755 if (!wdev->owner_nlportid)
11756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11757 msg, 0, NL80211_MCGRP_NAN, gfp);
11758 else
11759 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11760 wdev->owner_nlportid);
11761
11762 return;
11763
11764 nla_put_failure:
11765 nlmsg_free(msg);
11766 }
11767 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11768
11769 static int nl80211_get_protocol_features(struct sk_buff *skb,
11770 struct genl_info *info)
11771 {
11772 void *hdr;
11773 struct sk_buff *msg;
11774
11775 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11776 if (!msg)
11777 return -ENOMEM;
11778
11779 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11780 NL80211_CMD_GET_PROTOCOL_FEATURES);
11781 if (!hdr)
11782 goto nla_put_failure;
11783
11784 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11785 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11786 goto nla_put_failure;
11787
11788 genlmsg_end(msg, hdr);
11789 return genlmsg_reply(msg, info);
11790
11791 nla_put_failure:
11792 kfree_skb(msg);
11793 return -ENOBUFS;
11794 }
11795
11796 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11797 {
11798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11799 struct cfg80211_update_ft_ies_params ft_params;
11800 struct net_device *dev = info->user_ptr[1];
11801
11802 if (!rdev->ops->update_ft_ies)
11803 return -EOPNOTSUPP;
11804
11805 if (!info->attrs[NL80211_ATTR_MDID] ||
11806 !info->attrs[NL80211_ATTR_IE] ||
11807 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11808 return -EINVAL;
11809
11810 memset(&ft_params, 0, sizeof(ft_params));
11811 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11812 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11813 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11814
11815 return rdev_update_ft_ies(rdev, dev, &ft_params);
11816 }
11817
11818 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11819 struct genl_info *info)
11820 {
11821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11822 struct wireless_dev *wdev = info->user_ptr[1];
11823 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11824 u16 duration;
11825 int ret;
11826
11827 if (!rdev->ops->crit_proto_start)
11828 return -EOPNOTSUPP;
11829
11830 if (WARN_ON(!rdev->ops->crit_proto_stop))
11831 return -EINVAL;
11832
11833 if (rdev->crit_proto_nlportid)
11834 return -EBUSY;
11835
11836 /* determine protocol if provided */
11837 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11838 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11839
11840 if (proto >= NUM_NL80211_CRIT_PROTO)
11841 return -EINVAL;
11842
11843 /* timeout must be provided */
11844 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11845 return -EINVAL;
11846
11847 duration =
11848 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11849
11850 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11851 return -ERANGE;
11852
11853 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11854 if (!ret)
11855 rdev->crit_proto_nlportid = info->snd_portid;
11856
11857 return ret;
11858 }
11859
11860 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11861 struct genl_info *info)
11862 {
11863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11864 struct wireless_dev *wdev = info->user_ptr[1];
11865
11866 if (!rdev->ops->crit_proto_stop)
11867 return -EOPNOTSUPP;
11868
11869 if (rdev->crit_proto_nlportid) {
11870 rdev->crit_proto_nlportid = 0;
11871 rdev_crit_proto_stop(rdev, wdev);
11872 }
11873 return 0;
11874 }
11875
11876 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11877 {
11878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11879 struct wireless_dev *wdev =
11880 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11881 int i, err;
11882 u32 vid, subcmd;
11883
11884 if (!rdev->wiphy.vendor_commands)
11885 return -EOPNOTSUPP;
11886
11887 if (IS_ERR(wdev)) {
11888 err = PTR_ERR(wdev);
11889 if (err != -EINVAL)
11890 return err;
11891 wdev = NULL;
11892 } else if (wdev->wiphy != &rdev->wiphy) {
11893 return -EINVAL;
11894 }
11895
11896 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11897 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11898 return -EINVAL;
11899
11900 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11901 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11902 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11903 const struct wiphy_vendor_command *vcmd;
11904 void *data = NULL;
11905 int len = 0;
11906
11907 vcmd = &rdev->wiphy.vendor_commands[i];
11908
11909 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11910 continue;
11911
11912 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11913 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11914 if (!wdev)
11915 return -EINVAL;
11916 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11917 !wdev->netdev)
11918 return -EINVAL;
11919
11920 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11921 if (!wdev_running(wdev))
11922 return -ENETDOWN;
11923 }
11924
11925 if (!vcmd->doit)
11926 return -EOPNOTSUPP;
11927 } else {
11928 wdev = NULL;
11929 }
11930
11931 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11932 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11933 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11934 }
11935
11936 rdev->cur_cmd_info = info;
11937 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11938 data, len);
11939 rdev->cur_cmd_info = NULL;
11940 return err;
11941 }
11942
11943 return -EOPNOTSUPP;
11944 }
11945
11946 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11947 struct netlink_callback *cb,
11948 struct cfg80211_registered_device **rdev,
11949 struct wireless_dev **wdev)
11950 {
11951 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11952 u32 vid, subcmd;
11953 unsigned int i;
11954 int vcmd_idx = -1;
11955 int err;
11956 void *data = NULL;
11957 unsigned int data_len = 0;
11958
11959 if (cb->args[0]) {
11960 /* subtract the 1 again here */
11961 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11962 struct wireless_dev *tmp;
11963
11964 if (!wiphy)
11965 return -ENODEV;
11966 *rdev = wiphy_to_rdev(wiphy);
11967 *wdev = NULL;
11968
11969 if (cb->args[1]) {
11970 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11971 if (tmp->identifier == cb->args[1] - 1) {
11972 *wdev = tmp;
11973 break;
11974 }
11975 }
11976 }
11977
11978 /* keep rtnl locked in successful case */
11979 return 0;
11980 }
11981
11982 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11983 nl80211_fam.maxattr, nl80211_policy, NULL);
11984 if (err)
11985 return err;
11986
11987 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11988 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11989 return -EINVAL;
11990
11991 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11992 if (IS_ERR(*wdev))
11993 *wdev = NULL;
11994
11995 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11996 if (IS_ERR(*rdev))
11997 return PTR_ERR(*rdev);
11998
11999 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12000 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12001
12002 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12003 const struct wiphy_vendor_command *vcmd;
12004
12005 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12006
12007 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12008 continue;
12009
12010 if (!vcmd->dumpit)
12011 return -EOPNOTSUPP;
12012
12013 vcmd_idx = i;
12014 break;
12015 }
12016
12017 if (vcmd_idx < 0)
12018 return -EOPNOTSUPP;
12019
12020 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12021 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12022 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12023 }
12024
12025 /* 0 is the first index - add 1 to parse only once */
12026 cb->args[0] = (*rdev)->wiphy_idx + 1;
12027 /* add 1 to know if it was NULL */
12028 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12029 cb->args[2] = vcmd_idx;
12030 cb->args[3] = (unsigned long)data;
12031 cb->args[4] = data_len;
12032
12033 /* keep rtnl locked in successful case */
12034 return 0;
12035 }
12036
12037 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12038 struct netlink_callback *cb)
12039 {
12040 struct cfg80211_registered_device *rdev;
12041 struct wireless_dev *wdev;
12042 unsigned int vcmd_idx;
12043 const struct wiphy_vendor_command *vcmd;
12044 void *data;
12045 int data_len;
12046 int err;
12047 struct nlattr *vendor_data;
12048
12049 rtnl_lock();
12050 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12051 if (err)
12052 goto out;
12053
12054 vcmd_idx = cb->args[2];
12055 data = (void *)cb->args[3];
12056 data_len = cb->args[4];
12057 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12058
12059 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12060 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12061 if (!wdev) {
12062 err = -EINVAL;
12063 goto out;
12064 }
12065 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12066 !wdev->netdev) {
12067 err = -EINVAL;
12068 goto out;
12069 }
12070
12071 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12072 if (!wdev_running(wdev)) {
12073 err = -ENETDOWN;
12074 goto out;
12075 }
12076 }
12077 }
12078
12079 while (1) {
12080 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12081 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12082 NL80211_CMD_VENDOR);
12083 if (!hdr)
12084 break;
12085
12086 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12087 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12088 wdev_id(wdev),
12089 NL80211_ATTR_PAD))) {
12090 genlmsg_cancel(skb, hdr);
12091 break;
12092 }
12093
12094 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12095 if (!vendor_data) {
12096 genlmsg_cancel(skb, hdr);
12097 break;
12098 }
12099
12100 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12101 (unsigned long *)&cb->args[5]);
12102 nla_nest_end(skb, vendor_data);
12103
12104 if (err == -ENOBUFS || err == -ENOENT) {
12105 genlmsg_cancel(skb, hdr);
12106 break;
12107 } else if (err) {
12108 genlmsg_cancel(skb, hdr);
12109 goto out;
12110 }
12111
12112 genlmsg_end(skb, hdr);
12113 }
12114
12115 err = skb->len;
12116 out:
12117 rtnl_unlock();
12118 return err;
12119 }
12120
12121 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12122 enum nl80211_commands cmd,
12123 enum nl80211_attrs attr,
12124 int approxlen)
12125 {
12126 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12127
12128 if (WARN_ON(!rdev->cur_cmd_info))
12129 return NULL;
12130
12131 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12132 rdev->cur_cmd_info->snd_portid,
12133 rdev->cur_cmd_info->snd_seq,
12134 cmd, attr, NULL, GFP_KERNEL);
12135 }
12136 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12137
12138 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12139 {
12140 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12141 void *hdr = ((void **)skb->cb)[1];
12142 struct nlattr *data = ((void **)skb->cb)[2];
12143
12144 /* clear CB data for netlink core to own from now on */
12145 memset(skb->cb, 0, sizeof(skb->cb));
12146
12147 if (WARN_ON(!rdev->cur_cmd_info)) {
12148 kfree_skb(skb);
12149 return -EINVAL;
12150 }
12151
12152 nla_nest_end(skb, data);
12153 genlmsg_end(skb, hdr);
12154 return genlmsg_reply(skb, rdev->cur_cmd_info);
12155 }
12156 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12157
12158 static int nl80211_set_qos_map(struct sk_buff *skb,
12159 struct genl_info *info)
12160 {
12161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12162 struct cfg80211_qos_map *qos_map = NULL;
12163 struct net_device *dev = info->user_ptr[1];
12164 u8 *pos, len, num_des, des_len, des;
12165 int ret;
12166
12167 if (!rdev->ops->set_qos_map)
12168 return -EOPNOTSUPP;
12169
12170 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12171 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12172 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12173
12174 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12175 len > IEEE80211_QOS_MAP_LEN_MAX)
12176 return -EINVAL;
12177
12178 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12179 if (!qos_map)
12180 return -ENOMEM;
12181
12182 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12183 if (num_des) {
12184 des_len = num_des *
12185 sizeof(struct cfg80211_dscp_exception);
12186 memcpy(qos_map->dscp_exception, pos, des_len);
12187 qos_map->num_des = num_des;
12188 for (des = 0; des < num_des; des++) {
12189 if (qos_map->dscp_exception[des].up > 7) {
12190 kfree(qos_map);
12191 return -EINVAL;
12192 }
12193 }
12194 pos += des_len;
12195 }
12196 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12197 }
12198
12199 wdev_lock(dev->ieee80211_ptr);
12200 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12201 if (!ret)
12202 ret = rdev_set_qos_map(rdev, dev, qos_map);
12203 wdev_unlock(dev->ieee80211_ptr);
12204
12205 kfree(qos_map);
12206 return ret;
12207 }
12208
12209 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12210 {
12211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12212 struct net_device *dev = info->user_ptr[1];
12213 struct wireless_dev *wdev = dev->ieee80211_ptr;
12214 const u8 *peer;
12215 u8 tsid, up;
12216 u16 admitted_time = 0;
12217 int err;
12218
12219 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12220 return -EOPNOTSUPP;
12221
12222 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12223 !info->attrs[NL80211_ATTR_USER_PRIO])
12224 return -EINVAL;
12225
12226 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12227 if (tsid >= IEEE80211_NUM_TIDS)
12228 return -EINVAL;
12229
12230 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12231 if (up >= IEEE80211_NUM_UPS)
12232 return -EINVAL;
12233
12234 /* WMM uses TIDs 0-7 even for TSPEC */
12235 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12236 /* TODO: handle 802.11 TSPEC/admission control
12237 * need more attributes for that (e.g. BA session requirement);
12238 * change the WMM adminssion test above to allow both then
12239 */
12240 return -EINVAL;
12241 }
12242
12243 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12244
12245 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12246 admitted_time =
12247 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12248 if (!admitted_time)
12249 return -EINVAL;
12250 }
12251
12252 wdev_lock(wdev);
12253 switch (wdev->iftype) {
12254 case NL80211_IFTYPE_STATION:
12255 case NL80211_IFTYPE_P2P_CLIENT:
12256 if (wdev->current_bss)
12257 break;
12258 err = -ENOTCONN;
12259 goto out;
12260 default:
12261 err = -EOPNOTSUPP;
12262 goto out;
12263 }
12264
12265 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12266
12267 out:
12268 wdev_unlock(wdev);
12269 return err;
12270 }
12271
12272 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12273 {
12274 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12275 struct net_device *dev = info->user_ptr[1];
12276 struct wireless_dev *wdev = dev->ieee80211_ptr;
12277 const u8 *peer;
12278 u8 tsid;
12279 int err;
12280
12281 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12282 return -EINVAL;
12283
12284 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12285 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12286
12287 wdev_lock(wdev);
12288 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12289 wdev_unlock(wdev);
12290
12291 return err;
12292 }
12293
12294 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12295 struct genl_info *info)
12296 {
12297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12298 struct net_device *dev = info->user_ptr[1];
12299 struct wireless_dev *wdev = dev->ieee80211_ptr;
12300 struct cfg80211_chan_def chandef = {};
12301 const u8 *addr;
12302 u8 oper_class;
12303 int err;
12304
12305 if (!rdev->ops->tdls_channel_switch ||
12306 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12307 return -EOPNOTSUPP;
12308
12309 switch (dev->ieee80211_ptr->iftype) {
12310 case NL80211_IFTYPE_STATION:
12311 case NL80211_IFTYPE_P2P_CLIENT:
12312 break;
12313 default:
12314 return -EOPNOTSUPP;
12315 }
12316
12317 if (!info->attrs[NL80211_ATTR_MAC] ||
12318 !info->attrs[NL80211_ATTR_OPER_CLASS])
12319 return -EINVAL;
12320
12321 err = nl80211_parse_chandef(rdev, info, &chandef);
12322 if (err)
12323 return err;
12324
12325 /*
12326 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12327 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12328 * specification is not defined for them.
12329 */
12330 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12331 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12332 chandef.width != NL80211_CHAN_WIDTH_20)
12333 return -EINVAL;
12334
12335 /* we will be active on the TDLS link */
12336 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12337 wdev->iftype))
12338 return -EINVAL;
12339
12340 /* don't allow switching to DFS channels */
12341 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12342 return -EINVAL;
12343
12344 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12345 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12346
12347 wdev_lock(wdev);
12348 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12349 wdev_unlock(wdev);
12350
12351 return err;
12352 }
12353
12354 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12355 struct genl_info *info)
12356 {
12357 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12358 struct net_device *dev = info->user_ptr[1];
12359 struct wireless_dev *wdev = dev->ieee80211_ptr;
12360 const u8 *addr;
12361
12362 if (!rdev->ops->tdls_channel_switch ||
12363 !rdev->ops->tdls_cancel_channel_switch ||
12364 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12365 return -EOPNOTSUPP;
12366
12367 switch (dev->ieee80211_ptr->iftype) {
12368 case NL80211_IFTYPE_STATION:
12369 case NL80211_IFTYPE_P2P_CLIENT:
12370 break;
12371 default:
12372 return -EOPNOTSUPP;
12373 }
12374
12375 if (!info->attrs[NL80211_ATTR_MAC])
12376 return -EINVAL;
12377
12378 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12379
12380 wdev_lock(wdev);
12381 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12382 wdev_unlock(wdev);
12383
12384 return 0;
12385 }
12386
12387 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12388 struct genl_info *info)
12389 {
12390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12391 struct net_device *dev = info->user_ptr[1];
12392 struct wireless_dev *wdev = dev->ieee80211_ptr;
12393 const struct nlattr *nla;
12394 bool enabled;
12395
12396 if (!rdev->ops->set_multicast_to_unicast)
12397 return -EOPNOTSUPP;
12398
12399 if (wdev->iftype != NL80211_IFTYPE_AP &&
12400 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12401 return -EOPNOTSUPP;
12402
12403 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12404 enabled = nla_get_flag(nla);
12405
12406 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12407 }
12408
12409 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12410 {
12411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12412 struct net_device *dev = info->user_ptr[1];
12413 struct wireless_dev *wdev = dev->ieee80211_ptr;
12414 struct cfg80211_pmk_conf pmk_conf = {};
12415 int ret;
12416
12417 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12418 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12419 return -EOPNOTSUPP;
12420
12421 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12422 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12423 return -EOPNOTSUPP;
12424
12425 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12426 return -EINVAL;
12427
12428 wdev_lock(wdev);
12429 if (!wdev->current_bss) {
12430 ret = -ENOTCONN;
12431 goto out;
12432 }
12433
12434 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12435 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12436 ret = -EINVAL;
12437 goto out;
12438 }
12439
12440 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12441 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12442 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12443 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12444 ret = -EINVAL;
12445 goto out;
12446 }
12447
12448 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12449 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12450
12451 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12452 ret = -EINVAL;
12453 goto out;
12454 }
12455
12456 pmk_conf.pmk_r0_name =
12457 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12458 }
12459
12460 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12461 out:
12462 wdev_unlock(wdev);
12463 return ret;
12464 }
12465
12466 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12467 {
12468 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12469 struct net_device *dev = info->user_ptr[1];
12470 struct wireless_dev *wdev = dev->ieee80211_ptr;
12471 const u8 *aa;
12472 int ret;
12473
12474 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12475 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12476 return -EOPNOTSUPP;
12477
12478 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12479 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12480 return -EOPNOTSUPP;
12481
12482 if (!info->attrs[NL80211_ATTR_MAC])
12483 return -EINVAL;
12484
12485 wdev_lock(wdev);
12486 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12487 ret = rdev_del_pmk(rdev, dev, aa);
12488 wdev_unlock(wdev);
12489
12490 return ret;
12491 }
12492
12493 #define NL80211_FLAG_NEED_WIPHY 0x01
12494 #define NL80211_FLAG_NEED_NETDEV 0x02
12495 #define NL80211_FLAG_NEED_RTNL 0x04
12496 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12497 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12498 NL80211_FLAG_CHECK_NETDEV_UP)
12499 #define NL80211_FLAG_NEED_WDEV 0x10
12500 /* If a netdev is associated, it must be UP, P2P must be started */
12501 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12502 NL80211_FLAG_CHECK_NETDEV_UP)
12503 #define NL80211_FLAG_CLEAR_SKB 0x20
12504
12505 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12506 struct genl_info *info)
12507 {
12508 struct cfg80211_registered_device *rdev;
12509 struct wireless_dev *wdev;
12510 struct net_device *dev;
12511 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12512
12513 if (rtnl)
12514 rtnl_lock();
12515
12516 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12517 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12518 if (IS_ERR(rdev)) {
12519 if (rtnl)
12520 rtnl_unlock();
12521 return PTR_ERR(rdev);
12522 }
12523 info->user_ptr[0] = rdev;
12524 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12525 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12526 ASSERT_RTNL();
12527
12528 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12529 info->attrs);
12530 if (IS_ERR(wdev)) {
12531 if (rtnl)
12532 rtnl_unlock();
12533 return PTR_ERR(wdev);
12534 }
12535
12536 dev = wdev->netdev;
12537 rdev = wiphy_to_rdev(wdev->wiphy);
12538
12539 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12540 if (!dev) {
12541 if (rtnl)
12542 rtnl_unlock();
12543 return -EINVAL;
12544 }
12545
12546 info->user_ptr[1] = dev;
12547 } else {
12548 info->user_ptr[1] = wdev;
12549 }
12550
12551 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12552 !wdev_running(wdev)) {
12553 if (rtnl)
12554 rtnl_unlock();
12555 return -ENETDOWN;
12556 }
12557
12558 if (dev)
12559 dev_hold(dev);
12560
12561 info->user_ptr[0] = rdev;
12562 }
12563
12564 return 0;
12565 }
12566
12567 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12568 struct genl_info *info)
12569 {
12570 if (info->user_ptr[1]) {
12571 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12572 struct wireless_dev *wdev = info->user_ptr[1];
12573
12574 if (wdev->netdev)
12575 dev_put(wdev->netdev);
12576 } else {
12577 dev_put(info->user_ptr[1]);
12578 }
12579 }
12580
12581 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12582 rtnl_unlock();
12583
12584 /* If needed, clear the netlink message payload from the SKB
12585 * as it might contain key data that shouldn't stick around on
12586 * the heap after the SKB is freed. The netlink message header
12587 * is still needed for further processing, so leave it intact.
12588 */
12589 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12590 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12591
12592 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12593 }
12594 }
12595
12596 static const struct genl_ops nl80211_ops[] = {
12597 {
12598 .cmd = NL80211_CMD_GET_WIPHY,
12599 .doit = nl80211_get_wiphy,
12600 .dumpit = nl80211_dump_wiphy,
12601 .done = nl80211_dump_wiphy_done,
12602 .policy = nl80211_policy,
12603 /* can be retrieved by unprivileged users */
12604 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12605 NL80211_FLAG_NEED_RTNL,
12606 },
12607 {
12608 .cmd = NL80211_CMD_SET_WIPHY,
12609 .doit = nl80211_set_wiphy,
12610 .policy = nl80211_policy,
12611 .flags = GENL_UNS_ADMIN_PERM,
12612 .internal_flags = NL80211_FLAG_NEED_RTNL,
12613 },
12614 {
12615 .cmd = NL80211_CMD_GET_INTERFACE,
12616 .doit = nl80211_get_interface,
12617 .dumpit = nl80211_dump_interface,
12618 .policy = nl80211_policy,
12619 /* can be retrieved by unprivileged users */
12620 .internal_flags = NL80211_FLAG_NEED_WDEV |
12621 NL80211_FLAG_NEED_RTNL,
12622 },
12623 {
12624 .cmd = NL80211_CMD_SET_INTERFACE,
12625 .doit = nl80211_set_interface,
12626 .policy = nl80211_policy,
12627 .flags = GENL_UNS_ADMIN_PERM,
12628 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12629 NL80211_FLAG_NEED_RTNL,
12630 },
12631 {
12632 .cmd = NL80211_CMD_NEW_INTERFACE,
12633 .doit = nl80211_new_interface,
12634 .policy = nl80211_policy,
12635 .flags = GENL_UNS_ADMIN_PERM,
12636 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12637 NL80211_FLAG_NEED_RTNL,
12638 },
12639 {
12640 .cmd = NL80211_CMD_DEL_INTERFACE,
12641 .doit = nl80211_del_interface,
12642 .policy = nl80211_policy,
12643 .flags = GENL_UNS_ADMIN_PERM,
12644 .internal_flags = NL80211_FLAG_NEED_WDEV |
12645 NL80211_FLAG_NEED_RTNL,
12646 },
12647 {
12648 .cmd = NL80211_CMD_GET_KEY,
12649 .doit = nl80211_get_key,
12650 .policy = nl80211_policy,
12651 .flags = GENL_UNS_ADMIN_PERM,
12652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12653 NL80211_FLAG_NEED_RTNL,
12654 },
12655 {
12656 .cmd = NL80211_CMD_SET_KEY,
12657 .doit = nl80211_set_key,
12658 .policy = nl80211_policy,
12659 .flags = GENL_UNS_ADMIN_PERM,
12660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12661 NL80211_FLAG_NEED_RTNL |
12662 NL80211_FLAG_CLEAR_SKB,
12663 },
12664 {
12665 .cmd = NL80211_CMD_NEW_KEY,
12666 .doit = nl80211_new_key,
12667 .policy = nl80211_policy,
12668 .flags = GENL_UNS_ADMIN_PERM,
12669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12670 NL80211_FLAG_NEED_RTNL |
12671 NL80211_FLAG_CLEAR_SKB,
12672 },
12673 {
12674 .cmd = NL80211_CMD_DEL_KEY,
12675 .doit = nl80211_del_key,
12676 .policy = nl80211_policy,
12677 .flags = GENL_UNS_ADMIN_PERM,
12678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12679 NL80211_FLAG_NEED_RTNL,
12680 },
12681 {
12682 .cmd = NL80211_CMD_SET_BEACON,
12683 .policy = nl80211_policy,
12684 .flags = GENL_UNS_ADMIN_PERM,
12685 .doit = nl80211_set_beacon,
12686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12687 NL80211_FLAG_NEED_RTNL,
12688 },
12689 {
12690 .cmd = NL80211_CMD_START_AP,
12691 .policy = nl80211_policy,
12692 .flags = GENL_UNS_ADMIN_PERM,
12693 .doit = nl80211_start_ap,
12694 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12695 NL80211_FLAG_NEED_RTNL,
12696 },
12697 {
12698 .cmd = NL80211_CMD_STOP_AP,
12699 .policy = nl80211_policy,
12700 .flags = GENL_UNS_ADMIN_PERM,
12701 .doit = nl80211_stop_ap,
12702 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12703 NL80211_FLAG_NEED_RTNL,
12704 },
12705 {
12706 .cmd = NL80211_CMD_GET_STATION,
12707 .doit = nl80211_get_station,
12708 .dumpit = nl80211_dump_station,
12709 .policy = nl80211_policy,
12710 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12711 NL80211_FLAG_NEED_RTNL,
12712 },
12713 {
12714 .cmd = NL80211_CMD_SET_STATION,
12715 .doit = nl80211_set_station,
12716 .policy = nl80211_policy,
12717 .flags = GENL_UNS_ADMIN_PERM,
12718 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12719 NL80211_FLAG_NEED_RTNL,
12720 },
12721 {
12722 .cmd = NL80211_CMD_NEW_STATION,
12723 .doit = nl80211_new_station,
12724 .policy = nl80211_policy,
12725 .flags = GENL_UNS_ADMIN_PERM,
12726 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12727 NL80211_FLAG_NEED_RTNL,
12728 },
12729 {
12730 .cmd = NL80211_CMD_DEL_STATION,
12731 .doit = nl80211_del_station,
12732 .policy = nl80211_policy,
12733 .flags = GENL_UNS_ADMIN_PERM,
12734 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12735 NL80211_FLAG_NEED_RTNL,
12736 },
12737 {
12738 .cmd = NL80211_CMD_GET_MPATH,
12739 .doit = nl80211_get_mpath,
12740 .dumpit = nl80211_dump_mpath,
12741 .policy = nl80211_policy,
12742 .flags = GENL_UNS_ADMIN_PERM,
12743 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12744 NL80211_FLAG_NEED_RTNL,
12745 },
12746 {
12747 .cmd = NL80211_CMD_GET_MPP,
12748 .doit = nl80211_get_mpp,
12749 .dumpit = nl80211_dump_mpp,
12750 .policy = nl80211_policy,
12751 .flags = GENL_UNS_ADMIN_PERM,
12752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12753 NL80211_FLAG_NEED_RTNL,
12754 },
12755 {
12756 .cmd = NL80211_CMD_SET_MPATH,
12757 .doit = nl80211_set_mpath,
12758 .policy = nl80211_policy,
12759 .flags = GENL_UNS_ADMIN_PERM,
12760 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12761 NL80211_FLAG_NEED_RTNL,
12762 },
12763 {
12764 .cmd = NL80211_CMD_NEW_MPATH,
12765 .doit = nl80211_new_mpath,
12766 .policy = nl80211_policy,
12767 .flags = GENL_UNS_ADMIN_PERM,
12768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12769 NL80211_FLAG_NEED_RTNL,
12770 },
12771 {
12772 .cmd = NL80211_CMD_DEL_MPATH,
12773 .doit = nl80211_del_mpath,
12774 .policy = nl80211_policy,
12775 .flags = GENL_UNS_ADMIN_PERM,
12776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12777 NL80211_FLAG_NEED_RTNL,
12778 },
12779 {
12780 .cmd = NL80211_CMD_SET_BSS,
12781 .doit = nl80211_set_bss,
12782 .policy = nl80211_policy,
12783 .flags = GENL_UNS_ADMIN_PERM,
12784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12785 NL80211_FLAG_NEED_RTNL,
12786 },
12787 {
12788 .cmd = NL80211_CMD_GET_REG,
12789 .doit = nl80211_get_reg_do,
12790 .dumpit = nl80211_get_reg_dump,
12791 .policy = nl80211_policy,
12792 .internal_flags = NL80211_FLAG_NEED_RTNL,
12793 /* can be retrieved by unprivileged users */
12794 },
12795 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12796 {
12797 .cmd = NL80211_CMD_SET_REG,
12798 .doit = nl80211_set_reg,
12799 .policy = nl80211_policy,
12800 .flags = GENL_ADMIN_PERM,
12801 .internal_flags = NL80211_FLAG_NEED_RTNL,
12802 },
12803 #endif
12804 {
12805 .cmd = NL80211_CMD_REQ_SET_REG,
12806 .doit = nl80211_req_set_reg,
12807 .policy = nl80211_policy,
12808 .flags = GENL_ADMIN_PERM,
12809 },
12810 {
12811 .cmd = NL80211_CMD_RELOAD_REGDB,
12812 .doit = nl80211_reload_regdb,
12813 .policy = nl80211_policy,
12814 .flags = GENL_ADMIN_PERM,
12815 },
12816 {
12817 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12818 .doit = nl80211_get_mesh_config,
12819 .policy = nl80211_policy,
12820 /* can be retrieved by unprivileged users */
12821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12822 NL80211_FLAG_NEED_RTNL,
12823 },
12824 {
12825 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12826 .doit = nl80211_update_mesh_config,
12827 .policy = nl80211_policy,
12828 .flags = GENL_UNS_ADMIN_PERM,
12829 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12830 NL80211_FLAG_NEED_RTNL,
12831 },
12832 {
12833 .cmd = NL80211_CMD_TRIGGER_SCAN,
12834 .doit = nl80211_trigger_scan,
12835 .policy = nl80211_policy,
12836 .flags = GENL_UNS_ADMIN_PERM,
12837 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12838 NL80211_FLAG_NEED_RTNL,
12839 },
12840 {
12841 .cmd = NL80211_CMD_ABORT_SCAN,
12842 .doit = nl80211_abort_scan,
12843 .policy = nl80211_policy,
12844 .flags = GENL_UNS_ADMIN_PERM,
12845 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12846 NL80211_FLAG_NEED_RTNL,
12847 },
12848 {
12849 .cmd = NL80211_CMD_GET_SCAN,
12850 .policy = nl80211_policy,
12851 .dumpit = nl80211_dump_scan,
12852 },
12853 {
12854 .cmd = NL80211_CMD_START_SCHED_SCAN,
12855 .doit = nl80211_start_sched_scan,
12856 .policy = nl80211_policy,
12857 .flags = GENL_UNS_ADMIN_PERM,
12858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12859 NL80211_FLAG_NEED_RTNL,
12860 },
12861 {
12862 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12863 .doit = nl80211_stop_sched_scan,
12864 .policy = nl80211_policy,
12865 .flags = GENL_UNS_ADMIN_PERM,
12866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12867 NL80211_FLAG_NEED_RTNL,
12868 },
12869 {
12870 .cmd = NL80211_CMD_AUTHENTICATE,
12871 .doit = nl80211_authenticate,
12872 .policy = nl80211_policy,
12873 .flags = GENL_UNS_ADMIN_PERM,
12874 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12875 NL80211_FLAG_NEED_RTNL |
12876 NL80211_FLAG_CLEAR_SKB,
12877 },
12878 {
12879 .cmd = NL80211_CMD_ASSOCIATE,
12880 .doit = nl80211_associate,
12881 .policy = nl80211_policy,
12882 .flags = GENL_UNS_ADMIN_PERM,
12883 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12884 NL80211_FLAG_NEED_RTNL |
12885 NL80211_FLAG_CLEAR_SKB,
12886 },
12887 {
12888 .cmd = NL80211_CMD_DEAUTHENTICATE,
12889 .doit = nl80211_deauthenticate,
12890 .policy = nl80211_policy,
12891 .flags = GENL_UNS_ADMIN_PERM,
12892 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12893 NL80211_FLAG_NEED_RTNL,
12894 },
12895 {
12896 .cmd = NL80211_CMD_DISASSOCIATE,
12897 .doit = nl80211_disassociate,
12898 .policy = nl80211_policy,
12899 .flags = GENL_UNS_ADMIN_PERM,
12900 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12901 NL80211_FLAG_NEED_RTNL,
12902 },
12903 {
12904 .cmd = NL80211_CMD_JOIN_IBSS,
12905 .doit = nl80211_join_ibss,
12906 .policy = nl80211_policy,
12907 .flags = GENL_UNS_ADMIN_PERM,
12908 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12909 NL80211_FLAG_NEED_RTNL,
12910 },
12911 {
12912 .cmd = NL80211_CMD_LEAVE_IBSS,
12913 .doit = nl80211_leave_ibss,
12914 .policy = nl80211_policy,
12915 .flags = GENL_UNS_ADMIN_PERM,
12916 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12917 NL80211_FLAG_NEED_RTNL,
12918 },
12919 #ifdef CONFIG_NL80211_TESTMODE
12920 {
12921 .cmd = NL80211_CMD_TESTMODE,
12922 .doit = nl80211_testmode_do,
12923 .dumpit = nl80211_testmode_dump,
12924 .policy = nl80211_policy,
12925 .flags = GENL_UNS_ADMIN_PERM,
12926 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12927 NL80211_FLAG_NEED_RTNL,
12928 },
12929 #endif
12930 {
12931 .cmd = NL80211_CMD_CONNECT,
12932 .doit = nl80211_connect,
12933 .policy = nl80211_policy,
12934 .flags = GENL_UNS_ADMIN_PERM,
12935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12936 NL80211_FLAG_NEED_RTNL |
12937 NL80211_FLAG_CLEAR_SKB,
12938 },
12939 {
12940 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12941 .doit = nl80211_update_connect_params,
12942 .policy = nl80211_policy,
12943 .flags = GENL_ADMIN_PERM,
12944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12945 NL80211_FLAG_NEED_RTNL |
12946 NL80211_FLAG_CLEAR_SKB,
12947 },
12948 {
12949 .cmd = NL80211_CMD_DISCONNECT,
12950 .doit = nl80211_disconnect,
12951 .policy = nl80211_policy,
12952 .flags = GENL_UNS_ADMIN_PERM,
12953 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12954 NL80211_FLAG_NEED_RTNL,
12955 },
12956 {
12957 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12958 .doit = nl80211_wiphy_netns,
12959 .policy = nl80211_policy,
12960 .flags = GENL_UNS_ADMIN_PERM,
12961 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12962 NL80211_FLAG_NEED_RTNL,
12963 },
12964 {
12965 .cmd = NL80211_CMD_GET_SURVEY,
12966 .policy = nl80211_policy,
12967 .dumpit = nl80211_dump_survey,
12968 },
12969 {
12970 .cmd = NL80211_CMD_SET_PMKSA,
12971 .doit = nl80211_setdel_pmksa,
12972 .policy = nl80211_policy,
12973 .flags = GENL_UNS_ADMIN_PERM,
12974 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12975 NL80211_FLAG_NEED_RTNL |
12976 NL80211_FLAG_CLEAR_SKB,
12977 },
12978 {
12979 .cmd = NL80211_CMD_DEL_PMKSA,
12980 .doit = nl80211_setdel_pmksa,
12981 .policy = nl80211_policy,
12982 .flags = GENL_UNS_ADMIN_PERM,
12983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12984 NL80211_FLAG_NEED_RTNL,
12985 },
12986 {
12987 .cmd = NL80211_CMD_FLUSH_PMKSA,
12988 .doit = nl80211_flush_pmksa,
12989 .policy = nl80211_policy,
12990 .flags = GENL_UNS_ADMIN_PERM,
12991 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12992 NL80211_FLAG_NEED_RTNL,
12993 },
12994 {
12995 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12996 .doit = nl80211_remain_on_channel,
12997 .policy = nl80211_policy,
12998 .flags = GENL_UNS_ADMIN_PERM,
12999 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13000 NL80211_FLAG_NEED_RTNL,
13001 },
13002 {
13003 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13004 .doit = nl80211_cancel_remain_on_channel,
13005 .policy = nl80211_policy,
13006 .flags = GENL_UNS_ADMIN_PERM,
13007 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13008 NL80211_FLAG_NEED_RTNL,
13009 },
13010 {
13011 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13012 .doit = nl80211_set_tx_bitrate_mask,
13013 .policy = nl80211_policy,
13014 .flags = GENL_UNS_ADMIN_PERM,
13015 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13016 NL80211_FLAG_NEED_RTNL,
13017 },
13018 {
13019 .cmd = NL80211_CMD_REGISTER_FRAME,
13020 .doit = nl80211_register_mgmt,
13021 .policy = nl80211_policy,
13022 .flags = GENL_UNS_ADMIN_PERM,
13023 .internal_flags = NL80211_FLAG_NEED_WDEV |
13024 NL80211_FLAG_NEED_RTNL,
13025 },
13026 {
13027 .cmd = NL80211_CMD_FRAME,
13028 .doit = nl80211_tx_mgmt,
13029 .policy = nl80211_policy,
13030 .flags = GENL_UNS_ADMIN_PERM,
13031 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13032 NL80211_FLAG_NEED_RTNL,
13033 },
13034 {
13035 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13036 .doit = nl80211_tx_mgmt_cancel_wait,
13037 .policy = nl80211_policy,
13038 .flags = GENL_UNS_ADMIN_PERM,
13039 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13040 NL80211_FLAG_NEED_RTNL,
13041 },
13042 {
13043 .cmd = NL80211_CMD_SET_POWER_SAVE,
13044 .doit = nl80211_set_power_save,
13045 .policy = nl80211_policy,
13046 .flags = GENL_UNS_ADMIN_PERM,
13047 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13048 NL80211_FLAG_NEED_RTNL,
13049 },
13050 {
13051 .cmd = NL80211_CMD_GET_POWER_SAVE,
13052 .doit = nl80211_get_power_save,
13053 .policy = nl80211_policy,
13054 /* can be retrieved by unprivileged users */
13055 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13056 NL80211_FLAG_NEED_RTNL,
13057 },
13058 {
13059 .cmd = NL80211_CMD_SET_CQM,
13060 .doit = nl80211_set_cqm,
13061 .policy = nl80211_policy,
13062 .flags = GENL_UNS_ADMIN_PERM,
13063 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13064 NL80211_FLAG_NEED_RTNL,
13065 },
13066 {
13067 .cmd = NL80211_CMD_SET_CHANNEL,
13068 .doit = nl80211_set_channel,
13069 .policy = nl80211_policy,
13070 .flags = GENL_UNS_ADMIN_PERM,
13071 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13072 NL80211_FLAG_NEED_RTNL,
13073 },
13074 {
13075 .cmd = NL80211_CMD_SET_WDS_PEER,
13076 .doit = nl80211_set_wds_peer,
13077 .policy = nl80211_policy,
13078 .flags = GENL_UNS_ADMIN_PERM,
13079 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13080 NL80211_FLAG_NEED_RTNL,
13081 },
13082 {
13083 .cmd = NL80211_CMD_JOIN_MESH,
13084 .doit = nl80211_join_mesh,
13085 .policy = nl80211_policy,
13086 .flags = GENL_UNS_ADMIN_PERM,
13087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13088 NL80211_FLAG_NEED_RTNL,
13089 },
13090 {
13091 .cmd = NL80211_CMD_LEAVE_MESH,
13092 .doit = nl80211_leave_mesh,
13093 .policy = nl80211_policy,
13094 .flags = GENL_UNS_ADMIN_PERM,
13095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13096 NL80211_FLAG_NEED_RTNL,
13097 },
13098 {
13099 .cmd = NL80211_CMD_JOIN_OCB,
13100 .doit = nl80211_join_ocb,
13101 .policy = nl80211_policy,
13102 .flags = GENL_UNS_ADMIN_PERM,
13103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13104 NL80211_FLAG_NEED_RTNL,
13105 },
13106 {
13107 .cmd = NL80211_CMD_LEAVE_OCB,
13108 .doit = nl80211_leave_ocb,
13109 .policy = nl80211_policy,
13110 .flags = GENL_UNS_ADMIN_PERM,
13111 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13112 NL80211_FLAG_NEED_RTNL,
13113 },
13114 #ifdef CONFIG_PM
13115 {
13116 .cmd = NL80211_CMD_GET_WOWLAN,
13117 .doit = nl80211_get_wowlan,
13118 .policy = nl80211_policy,
13119 /* can be retrieved by unprivileged users */
13120 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13121 NL80211_FLAG_NEED_RTNL,
13122 },
13123 {
13124 .cmd = NL80211_CMD_SET_WOWLAN,
13125 .doit = nl80211_set_wowlan,
13126 .policy = nl80211_policy,
13127 .flags = GENL_UNS_ADMIN_PERM,
13128 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13129 NL80211_FLAG_NEED_RTNL,
13130 },
13131 #endif
13132 {
13133 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13134 .doit = nl80211_set_rekey_data,
13135 .policy = nl80211_policy,
13136 .flags = GENL_UNS_ADMIN_PERM,
13137 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13138 NL80211_FLAG_NEED_RTNL |
13139 NL80211_FLAG_CLEAR_SKB,
13140 },
13141 {
13142 .cmd = NL80211_CMD_TDLS_MGMT,
13143 .doit = nl80211_tdls_mgmt,
13144 .policy = nl80211_policy,
13145 .flags = GENL_UNS_ADMIN_PERM,
13146 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13147 NL80211_FLAG_NEED_RTNL,
13148 },
13149 {
13150 .cmd = NL80211_CMD_TDLS_OPER,
13151 .doit = nl80211_tdls_oper,
13152 .policy = nl80211_policy,
13153 .flags = GENL_UNS_ADMIN_PERM,
13154 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13155 NL80211_FLAG_NEED_RTNL,
13156 },
13157 {
13158 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13159 .doit = nl80211_register_unexpected_frame,
13160 .policy = nl80211_policy,
13161 .flags = GENL_UNS_ADMIN_PERM,
13162 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13163 NL80211_FLAG_NEED_RTNL,
13164 },
13165 {
13166 .cmd = NL80211_CMD_PROBE_CLIENT,
13167 .doit = nl80211_probe_client,
13168 .policy = nl80211_policy,
13169 .flags = GENL_UNS_ADMIN_PERM,
13170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13171 NL80211_FLAG_NEED_RTNL,
13172 },
13173 {
13174 .cmd = NL80211_CMD_REGISTER_BEACONS,
13175 .doit = nl80211_register_beacons,
13176 .policy = nl80211_policy,
13177 .flags = GENL_UNS_ADMIN_PERM,
13178 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13179 NL80211_FLAG_NEED_RTNL,
13180 },
13181 {
13182 .cmd = NL80211_CMD_SET_NOACK_MAP,
13183 .doit = nl80211_set_noack_map,
13184 .policy = nl80211_policy,
13185 .flags = GENL_UNS_ADMIN_PERM,
13186 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13187 NL80211_FLAG_NEED_RTNL,
13188 },
13189 {
13190 .cmd = NL80211_CMD_START_P2P_DEVICE,
13191 .doit = nl80211_start_p2p_device,
13192 .policy = nl80211_policy,
13193 .flags = GENL_UNS_ADMIN_PERM,
13194 .internal_flags = NL80211_FLAG_NEED_WDEV |
13195 NL80211_FLAG_NEED_RTNL,
13196 },
13197 {
13198 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13199 .doit = nl80211_stop_p2p_device,
13200 .policy = nl80211_policy,
13201 .flags = GENL_UNS_ADMIN_PERM,
13202 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13203 NL80211_FLAG_NEED_RTNL,
13204 },
13205 {
13206 .cmd = NL80211_CMD_START_NAN,
13207 .doit = nl80211_start_nan,
13208 .policy = nl80211_policy,
13209 .flags = GENL_ADMIN_PERM,
13210 .internal_flags = NL80211_FLAG_NEED_WDEV |
13211 NL80211_FLAG_NEED_RTNL,
13212 },
13213 {
13214 .cmd = NL80211_CMD_STOP_NAN,
13215 .doit = nl80211_stop_nan,
13216 .policy = nl80211_policy,
13217 .flags = GENL_ADMIN_PERM,
13218 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13219 NL80211_FLAG_NEED_RTNL,
13220 },
13221 {
13222 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13223 .doit = nl80211_nan_add_func,
13224 .policy = nl80211_policy,
13225 .flags = GENL_ADMIN_PERM,
13226 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13227 NL80211_FLAG_NEED_RTNL,
13228 },
13229 {
13230 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13231 .doit = nl80211_nan_del_func,
13232 .policy = nl80211_policy,
13233 .flags = GENL_ADMIN_PERM,
13234 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13235 NL80211_FLAG_NEED_RTNL,
13236 },
13237 {
13238 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13239 .doit = nl80211_nan_change_config,
13240 .policy = nl80211_policy,
13241 .flags = GENL_ADMIN_PERM,
13242 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13243 NL80211_FLAG_NEED_RTNL,
13244 },
13245 {
13246 .cmd = NL80211_CMD_SET_MCAST_RATE,
13247 .doit = nl80211_set_mcast_rate,
13248 .policy = nl80211_policy,
13249 .flags = GENL_UNS_ADMIN_PERM,
13250 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13251 NL80211_FLAG_NEED_RTNL,
13252 },
13253 {
13254 .cmd = NL80211_CMD_SET_MAC_ACL,
13255 .doit = nl80211_set_mac_acl,
13256 .policy = nl80211_policy,
13257 .flags = GENL_UNS_ADMIN_PERM,
13258 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13259 NL80211_FLAG_NEED_RTNL,
13260 },
13261 {
13262 .cmd = NL80211_CMD_RADAR_DETECT,
13263 .doit = nl80211_start_radar_detection,
13264 .policy = nl80211_policy,
13265 .flags = GENL_UNS_ADMIN_PERM,
13266 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13267 NL80211_FLAG_NEED_RTNL,
13268 },
13269 {
13270 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13271 .doit = nl80211_get_protocol_features,
13272 .policy = nl80211_policy,
13273 },
13274 {
13275 .cmd = NL80211_CMD_UPDATE_FT_IES,
13276 .doit = nl80211_update_ft_ies,
13277 .policy = nl80211_policy,
13278 .flags = GENL_UNS_ADMIN_PERM,
13279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13280 NL80211_FLAG_NEED_RTNL,
13281 },
13282 {
13283 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13284 .doit = nl80211_crit_protocol_start,
13285 .policy = nl80211_policy,
13286 .flags = GENL_UNS_ADMIN_PERM,
13287 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13288 NL80211_FLAG_NEED_RTNL,
13289 },
13290 {
13291 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13292 .doit = nl80211_crit_protocol_stop,
13293 .policy = nl80211_policy,
13294 .flags = GENL_UNS_ADMIN_PERM,
13295 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13296 NL80211_FLAG_NEED_RTNL,
13297 },
13298 {
13299 .cmd = NL80211_CMD_GET_COALESCE,
13300 .doit = nl80211_get_coalesce,
13301 .policy = nl80211_policy,
13302 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13303 NL80211_FLAG_NEED_RTNL,
13304 },
13305 {
13306 .cmd = NL80211_CMD_SET_COALESCE,
13307 .doit = nl80211_set_coalesce,
13308 .policy = nl80211_policy,
13309 .flags = GENL_UNS_ADMIN_PERM,
13310 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13311 NL80211_FLAG_NEED_RTNL,
13312 },
13313 {
13314 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13315 .doit = nl80211_channel_switch,
13316 .policy = nl80211_policy,
13317 .flags = GENL_UNS_ADMIN_PERM,
13318 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13319 NL80211_FLAG_NEED_RTNL,
13320 },
13321 {
13322 .cmd = NL80211_CMD_VENDOR,
13323 .doit = nl80211_vendor_cmd,
13324 .dumpit = nl80211_vendor_cmd_dump,
13325 .policy = nl80211_policy,
13326 .flags = GENL_UNS_ADMIN_PERM,
13327 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13328 NL80211_FLAG_NEED_RTNL |
13329 NL80211_FLAG_CLEAR_SKB,
13330 },
13331 {
13332 .cmd = NL80211_CMD_SET_QOS_MAP,
13333 .doit = nl80211_set_qos_map,
13334 .policy = nl80211_policy,
13335 .flags = GENL_UNS_ADMIN_PERM,
13336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13337 NL80211_FLAG_NEED_RTNL,
13338 },
13339 {
13340 .cmd = NL80211_CMD_ADD_TX_TS,
13341 .doit = nl80211_add_tx_ts,
13342 .policy = nl80211_policy,
13343 .flags = GENL_UNS_ADMIN_PERM,
13344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13345 NL80211_FLAG_NEED_RTNL,
13346 },
13347 {
13348 .cmd = NL80211_CMD_DEL_TX_TS,
13349 .doit = nl80211_del_tx_ts,
13350 .policy = nl80211_policy,
13351 .flags = GENL_UNS_ADMIN_PERM,
13352 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13353 NL80211_FLAG_NEED_RTNL,
13354 },
13355 {
13356 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13357 .doit = nl80211_tdls_channel_switch,
13358 .policy = nl80211_policy,
13359 .flags = GENL_UNS_ADMIN_PERM,
13360 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13361 NL80211_FLAG_NEED_RTNL,
13362 },
13363 {
13364 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13365 .doit = nl80211_tdls_cancel_channel_switch,
13366 .policy = nl80211_policy,
13367 .flags = GENL_UNS_ADMIN_PERM,
13368 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13369 NL80211_FLAG_NEED_RTNL,
13370 },
13371 {
13372 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13373 .doit = nl80211_set_multicast_to_unicast,
13374 .policy = nl80211_policy,
13375 .flags = GENL_UNS_ADMIN_PERM,
13376 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13377 NL80211_FLAG_NEED_RTNL,
13378 },
13379 {
13380 .cmd = NL80211_CMD_SET_PMK,
13381 .doit = nl80211_set_pmk,
13382 .policy = nl80211_policy,
13383 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13384 NL80211_FLAG_NEED_RTNL |
13385 NL80211_FLAG_CLEAR_SKB,
13386 },
13387 {
13388 .cmd = NL80211_CMD_DEL_PMK,
13389 .doit = nl80211_del_pmk,
13390 .policy = nl80211_policy,
13391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13392 NL80211_FLAG_NEED_RTNL,
13393 },
13394
13395 };
13396
13397 static struct genl_family nl80211_fam __ro_after_init = {
13398 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13399 .hdrsize = 0, /* no private header */
13400 .version = 1, /* no particular meaning now */
13401 .maxattr = NL80211_ATTR_MAX,
13402 .netnsok = true,
13403 .pre_doit = nl80211_pre_doit,
13404 .post_doit = nl80211_post_doit,
13405 .module = THIS_MODULE,
13406 .ops = nl80211_ops,
13407 .n_ops = ARRAY_SIZE(nl80211_ops),
13408 .mcgrps = nl80211_mcgrps,
13409 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13410 };
13411
13412 /* notification functions */
13413
13414 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13415 enum nl80211_commands cmd)
13416 {
13417 struct sk_buff *msg;
13418 struct nl80211_dump_wiphy_state state = {};
13419
13420 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13421 cmd != NL80211_CMD_DEL_WIPHY);
13422
13423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13424 if (!msg)
13425 return;
13426
13427 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13428 nlmsg_free(msg);
13429 return;
13430 }
13431
13432 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13433 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13434 }
13435
13436 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13437 struct wireless_dev *wdev,
13438 enum nl80211_commands cmd)
13439 {
13440 struct sk_buff *msg;
13441
13442 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13443 cmd != NL80211_CMD_DEL_INTERFACE);
13444
13445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13446 if (!msg)
13447 return;
13448
13449 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13450 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13451 nlmsg_free(msg);
13452 return;
13453 }
13454
13455 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13456 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13457 }
13458
13459 static int nl80211_add_scan_req(struct sk_buff *msg,
13460 struct cfg80211_registered_device *rdev)
13461 {
13462 struct cfg80211_scan_request *req = rdev->scan_req;
13463 struct nlattr *nest;
13464 int i;
13465
13466 if (WARN_ON(!req))
13467 return 0;
13468
13469 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13470 if (!nest)
13471 goto nla_put_failure;
13472 for (i = 0; i < req->n_ssids; i++) {
13473 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13474 goto nla_put_failure;
13475 }
13476 nla_nest_end(msg, nest);
13477
13478 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13479 if (!nest)
13480 goto nla_put_failure;
13481 for (i = 0; i < req->n_channels; i++) {
13482 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13483 goto nla_put_failure;
13484 }
13485 nla_nest_end(msg, nest);
13486
13487 if (req->ie &&
13488 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13489 goto nla_put_failure;
13490
13491 if (req->flags &&
13492 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13493 goto nla_put_failure;
13494
13495 if (req->info.scan_start_tsf &&
13496 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13497 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13498 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13499 req->info.tsf_bssid)))
13500 goto nla_put_failure;
13501
13502 return 0;
13503 nla_put_failure:
13504 return -ENOBUFS;
13505 }
13506
13507 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13508 struct cfg80211_registered_device *rdev,
13509 struct wireless_dev *wdev,
13510 u32 portid, u32 seq, int flags,
13511 u32 cmd)
13512 {
13513 void *hdr;
13514
13515 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13516 if (!hdr)
13517 return -1;
13518
13519 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13520 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13521 wdev->netdev->ifindex)) ||
13522 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13523 NL80211_ATTR_PAD))
13524 goto nla_put_failure;
13525
13526 /* ignore errors and send incomplete event anyway */
13527 nl80211_add_scan_req(msg, rdev);
13528
13529 genlmsg_end(msg, hdr);
13530 return 0;
13531
13532 nla_put_failure:
13533 genlmsg_cancel(msg, hdr);
13534 return -EMSGSIZE;
13535 }
13536
13537 static int
13538 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13539 struct cfg80211_sched_scan_request *req, u32 cmd)
13540 {
13541 void *hdr;
13542
13543 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13544 if (!hdr)
13545 return -1;
13546
13547 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13548 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13549 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13550 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13551 NL80211_ATTR_PAD))
13552 goto nla_put_failure;
13553
13554 genlmsg_end(msg, hdr);
13555 return 0;
13556
13557 nla_put_failure:
13558 genlmsg_cancel(msg, hdr);
13559 return -EMSGSIZE;
13560 }
13561
13562 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13563 struct wireless_dev *wdev)
13564 {
13565 struct sk_buff *msg;
13566
13567 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13568 if (!msg)
13569 return;
13570
13571 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13572 NL80211_CMD_TRIGGER_SCAN) < 0) {
13573 nlmsg_free(msg);
13574 return;
13575 }
13576
13577 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13578 NL80211_MCGRP_SCAN, GFP_KERNEL);
13579 }
13580
13581 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13582 struct wireless_dev *wdev, bool aborted)
13583 {
13584 struct sk_buff *msg;
13585
13586 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13587 if (!msg)
13588 return NULL;
13589
13590 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13591 aborted ? NL80211_CMD_SCAN_ABORTED :
13592 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13593 nlmsg_free(msg);
13594 return NULL;
13595 }
13596
13597 return msg;
13598 }
13599
13600 /* send message created by nl80211_build_scan_msg() */
13601 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13602 struct sk_buff *msg)
13603 {
13604 if (!msg)
13605 return;
13606
13607 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13608 NL80211_MCGRP_SCAN, GFP_KERNEL);
13609 }
13610
13611 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13612 {
13613 struct sk_buff *msg;
13614
13615 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13616 if (!msg)
13617 return;
13618
13619 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13620 nlmsg_free(msg);
13621 return;
13622 }
13623
13624 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13625 NL80211_MCGRP_SCAN, GFP_KERNEL);
13626 }
13627
13628 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13629 struct regulatory_request *request)
13630 {
13631 /* Userspace can always count this one always being set */
13632 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13633 goto nla_put_failure;
13634
13635 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13636 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13637 NL80211_REGDOM_TYPE_WORLD))
13638 goto nla_put_failure;
13639 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13640 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13641 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13642 goto nla_put_failure;
13643 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13644 request->intersect) {
13645 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13646 NL80211_REGDOM_TYPE_INTERSECTION))
13647 goto nla_put_failure;
13648 } else {
13649 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13650 NL80211_REGDOM_TYPE_COUNTRY) ||
13651 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13652 request->alpha2))
13653 goto nla_put_failure;
13654 }
13655
13656 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13657 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13658
13659 if (wiphy &&
13660 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13661 goto nla_put_failure;
13662
13663 if (wiphy &&
13664 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13665 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13666 goto nla_put_failure;
13667 }
13668
13669 return true;
13670
13671 nla_put_failure:
13672 return false;
13673 }
13674
13675 /*
13676 * This can happen on global regulatory changes or device specific settings
13677 * based on custom regulatory domains.
13678 */
13679 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13680 struct regulatory_request *request)
13681 {
13682 struct sk_buff *msg;
13683 void *hdr;
13684
13685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13686 if (!msg)
13687 return;
13688
13689 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13690 if (!hdr) {
13691 nlmsg_free(msg);
13692 return;
13693 }
13694
13695 if (nl80211_reg_change_event_fill(msg, request) == false)
13696 goto nla_put_failure;
13697
13698 genlmsg_end(msg, hdr);
13699
13700 rcu_read_lock();
13701 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13702 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13703 rcu_read_unlock();
13704
13705 return;
13706
13707 nla_put_failure:
13708 genlmsg_cancel(msg, hdr);
13709 nlmsg_free(msg);
13710 }
13711
13712 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13713 struct net_device *netdev,
13714 const u8 *buf, size_t len,
13715 enum nl80211_commands cmd, gfp_t gfp,
13716 int uapsd_queues)
13717 {
13718 struct sk_buff *msg;
13719 void *hdr;
13720
13721 msg = nlmsg_new(100 + len, gfp);
13722 if (!msg)
13723 return;
13724
13725 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13726 if (!hdr) {
13727 nlmsg_free(msg);
13728 return;
13729 }
13730
13731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13732 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13733 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13734 goto nla_put_failure;
13735
13736 if (uapsd_queues >= 0) {
13737 struct nlattr *nla_wmm =
13738 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13739 if (!nla_wmm)
13740 goto nla_put_failure;
13741
13742 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13743 uapsd_queues))
13744 goto nla_put_failure;
13745
13746 nla_nest_end(msg, nla_wmm);
13747 }
13748
13749 genlmsg_end(msg, hdr);
13750
13751 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13752 NL80211_MCGRP_MLME, gfp);
13753 return;
13754
13755 nla_put_failure:
13756 genlmsg_cancel(msg, hdr);
13757 nlmsg_free(msg);
13758 }
13759
13760 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13761 struct net_device *netdev, const u8 *buf,
13762 size_t len, gfp_t gfp)
13763 {
13764 nl80211_send_mlme_event(rdev, netdev, buf, len,
13765 NL80211_CMD_AUTHENTICATE, gfp, -1);
13766 }
13767
13768 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13769 struct net_device *netdev, const u8 *buf,
13770 size_t len, gfp_t gfp, int uapsd_queues)
13771 {
13772 nl80211_send_mlme_event(rdev, netdev, buf, len,
13773 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13774 }
13775
13776 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13777 struct net_device *netdev, const u8 *buf,
13778 size_t len, gfp_t gfp)
13779 {
13780 nl80211_send_mlme_event(rdev, netdev, buf, len,
13781 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13782 }
13783
13784 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13785 struct net_device *netdev, const u8 *buf,
13786 size_t len, gfp_t gfp)
13787 {
13788 nl80211_send_mlme_event(rdev, netdev, buf, len,
13789 NL80211_CMD_DISASSOCIATE, gfp, -1);
13790 }
13791
13792 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13793 size_t len)
13794 {
13795 struct wireless_dev *wdev = dev->ieee80211_ptr;
13796 struct wiphy *wiphy = wdev->wiphy;
13797 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13798 const struct ieee80211_mgmt *mgmt = (void *)buf;
13799 u32 cmd;
13800
13801 if (WARN_ON(len < 2))
13802 return;
13803
13804 if (ieee80211_is_deauth(mgmt->frame_control))
13805 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13806 else
13807 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13808
13809 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13810 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13811 }
13812 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13813
13814 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13815 struct net_device *netdev, int cmd,
13816 const u8 *addr, gfp_t gfp)
13817 {
13818 struct sk_buff *msg;
13819 void *hdr;
13820
13821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13822 if (!msg)
13823 return;
13824
13825 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13826 if (!hdr) {
13827 nlmsg_free(msg);
13828 return;
13829 }
13830
13831 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13832 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13833 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13834 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13835 goto nla_put_failure;
13836
13837 genlmsg_end(msg, hdr);
13838
13839 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13840 NL80211_MCGRP_MLME, gfp);
13841 return;
13842
13843 nla_put_failure:
13844 genlmsg_cancel(msg, hdr);
13845 nlmsg_free(msg);
13846 }
13847
13848 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13849 struct net_device *netdev, const u8 *addr,
13850 gfp_t gfp)
13851 {
13852 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13853 addr, gfp);
13854 }
13855
13856 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13857 struct net_device *netdev, const u8 *addr,
13858 gfp_t gfp)
13859 {
13860 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13861 addr, gfp);
13862 }
13863
13864 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13865 struct net_device *netdev,
13866 struct cfg80211_connect_resp_params *cr,
13867 gfp_t gfp)
13868 {
13869 struct sk_buff *msg;
13870 void *hdr;
13871
13872 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13873 cr->fils_kek_len + cr->pmk_len +
13874 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13875 if (!msg)
13876 return;
13877
13878 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13879 if (!hdr) {
13880 nlmsg_free(msg);
13881 return;
13882 }
13883
13884 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13885 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13886 (cr->bssid &&
13887 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13888 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13889 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13890 cr->status) ||
13891 (cr->status < 0 &&
13892 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13893 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13894 cr->timeout_reason))) ||
13895 (cr->req_ie &&
13896 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13897 (cr->resp_ie &&
13898 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13899 cr->resp_ie)) ||
13900 (cr->update_erp_next_seq_num &&
13901 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13902 cr->fils_erp_next_seq_num)) ||
13903 (cr->status == WLAN_STATUS_SUCCESS &&
13904 ((cr->fils_kek &&
13905 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13906 cr->fils_kek)) ||
13907 (cr->pmk &&
13908 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13909 (cr->pmkid &&
13910 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13911 goto nla_put_failure;
13912
13913 genlmsg_end(msg, hdr);
13914
13915 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13916 NL80211_MCGRP_MLME, gfp);
13917 return;
13918
13919 nla_put_failure:
13920 genlmsg_cancel(msg, hdr);
13921 nlmsg_free(msg);
13922 }
13923
13924 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13925 struct net_device *netdev,
13926 struct cfg80211_roam_info *info, gfp_t gfp)
13927 {
13928 struct sk_buff *msg;
13929 void *hdr;
13930 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13931
13932 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13933 if (!msg)
13934 return;
13935
13936 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13937 if (!hdr) {
13938 nlmsg_free(msg);
13939 return;
13940 }
13941
13942 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13943 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13944 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13945 (info->req_ie &&
13946 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13947 info->req_ie)) ||
13948 (info->resp_ie &&
13949 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13950 info->resp_ie)))
13951 goto nla_put_failure;
13952
13953 genlmsg_end(msg, hdr);
13954
13955 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13956 NL80211_MCGRP_MLME, gfp);
13957 return;
13958
13959 nla_put_failure:
13960 genlmsg_cancel(msg, hdr);
13961 nlmsg_free(msg);
13962 }
13963
13964 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13965 struct net_device *netdev, const u8 *bssid)
13966 {
13967 struct sk_buff *msg;
13968 void *hdr;
13969
13970 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13971 if (!msg)
13972 return;
13973
13974 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13975 if (!hdr) {
13976 nlmsg_free(msg);
13977 return;
13978 }
13979
13980 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13981 goto nla_put_failure;
13982
13983 genlmsg_end(msg, hdr);
13984
13985 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13986 NL80211_MCGRP_MLME, GFP_KERNEL);
13987 return;
13988
13989 nla_put_failure:
13990 genlmsg_cancel(msg, hdr);
13991 nlmsg_free(msg);
13992 }
13993
13994 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13995 struct net_device *netdev, u16 reason,
13996 const u8 *ie, size_t ie_len, bool from_ap)
13997 {
13998 struct sk_buff *msg;
13999 void *hdr;
14000
14001 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14002 if (!msg)
14003 return;
14004
14005 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14006 if (!hdr) {
14007 nlmsg_free(msg);
14008 return;
14009 }
14010
14011 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14012 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14013 (from_ap && reason &&
14014 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14015 (from_ap &&
14016 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14017 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14018 goto nla_put_failure;
14019
14020 genlmsg_end(msg, hdr);
14021
14022 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14023 NL80211_MCGRP_MLME, GFP_KERNEL);
14024 return;
14025
14026 nla_put_failure:
14027 genlmsg_cancel(msg, hdr);
14028 nlmsg_free(msg);
14029 }
14030
14031 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14032 struct net_device *netdev, const u8 *bssid,
14033 gfp_t gfp)
14034 {
14035 struct sk_buff *msg;
14036 void *hdr;
14037
14038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14039 if (!msg)
14040 return;
14041
14042 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14043 if (!hdr) {
14044 nlmsg_free(msg);
14045 return;
14046 }
14047
14048 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14049 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14050 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14051 goto nla_put_failure;
14052
14053 genlmsg_end(msg, hdr);
14054
14055 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14056 NL80211_MCGRP_MLME, gfp);
14057 return;
14058
14059 nla_put_failure:
14060 genlmsg_cancel(msg, hdr);
14061 nlmsg_free(msg);
14062 }
14063
14064 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14065 const u8* ie, u8 ie_len, gfp_t gfp)
14066 {
14067 struct wireless_dev *wdev = dev->ieee80211_ptr;
14068 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14069 struct sk_buff *msg;
14070 void *hdr;
14071
14072 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14073 return;
14074
14075 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14076
14077 msg = nlmsg_new(100 + ie_len, gfp);
14078 if (!msg)
14079 return;
14080
14081 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14082 if (!hdr) {
14083 nlmsg_free(msg);
14084 return;
14085 }
14086
14087 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14088 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14089 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14090 (ie_len && ie &&
14091 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14092 goto nla_put_failure;
14093
14094 genlmsg_end(msg, hdr);
14095
14096 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14097 NL80211_MCGRP_MLME, gfp);
14098 return;
14099
14100 nla_put_failure:
14101 genlmsg_cancel(msg, hdr);
14102 nlmsg_free(msg);
14103 }
14104 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14105
14106 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14107 struct net_device *netdev, const u8 *addr,
14108 enum nl80211_key_type key_type, int key_id,
14109 const u8 *tsc, gfp_t gfp)
14110 {
14111 struct sk_buff *msg;
14112 void *hdr;
14113
14114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14115 if (!msg)
14116 return;
14117
14118 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14119 if (!hdr) {
14120 nlmsg_free(msg);
14121 return;
14122 }
14123
14124 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14125 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14126 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14127 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14128 (key_id != -1 &&
14129 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14130 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14131 goto nla_put_failure;
14132
14133 genlmsg_end(msg, hdr);
14134
14135 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14136 NL80211_MCGRP_MLME, gfp);
14137 return;
14138
14139 nla_put_failure:
14140 genlmsg_cancel(msg, hdr);
14141 nlmsg_free(msg);
14142 }
14143
14144 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14145 struct ieee80211_channel *channel_before,
14146 struct ieee80211_channel *channel_after)
14147 {
14148 struct sk_buff *msg;
14149 void *hdr;
14150 struct nlattr *nl_freq;
14151
14152 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14153 if (!msg)
14154 return;
14155
14156 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14157 if (!hdr) {
14158 nlmsg_free(msg);
14159 return;
14160 }
14161
14162 /*
14163 * Since we are applying the beacon hint to a wiphy we know its
14164 * wiphy_idx is valid
14165 */
14166 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14167 goto nla_put_failure;
14168
14169 /* Before */
14170 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14171 if (!nl_freq)
14172 goto nla_put_failure;
14173 if (nl80211_msg_put_channel(msg, channel_before, false))
14174 goto nla_put_failure;
14175 nla_nest_end(msg, nl_freq);
14176
14177 /* After */
14178 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14179 if (!nl_freq)
14180 goto nla_put_failure;
14181 if (nl80211_msg_put_channel(msg, channel_after, false))
14182 goto nla_put_failure;
14183 nla_nest_end(msg, nl_freq);
14184
14185 genlmsg_end(msg, hdr);
14186
14187 rcu_read_lock();
14188 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14189 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14190 rcu_read_unlock();
14191
14192 return;
14193
14194 nla_put_failure:
14195 genlmsg_cancel(msg, hdr);
14196 nlmsg_free(msg);
14197 }
14198
14199 static void nl80211_send_remain_on_chan_event(
14200 int cmd, struct cfg80211_registered_device *rdev,
14201 struct wireless_dev *wdev, u64 cookie,
14202 struct ieee80211_channel *chan,
14203 unsigned int duration, gfp_t gfp)
14204 {
14205 struct sk_buff *msg;
14206 void *hdr;
14207
14208 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14209 if (!msg)
14210 return;
14211
14212 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14213 if (!hdr) {
14214 nlmsg_free(msg);
14215 return;
14216 }
14217
14218 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14219 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14220 wdev->netdev->ifindex)) ||
14221 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14222 NL80211_ATTR_PAD) ||
14223 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14224 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14225 NL80211_CHAN_NO_HT) ||
14226 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14227 NL80211_ATTR_PAD))
14228 goto nla_put_failure;
14229
14230 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14231 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14232 goto nla_put_failure;
14233
14234 genlmsg_end(msg, hdr);
14235
14236 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14237 NL80211_MCGRP_MLME, gfp);
14238 return;
14239
14240 nla_put_failure:
14241 genlmsg_cancel(msg, hdr);
14242 nlmsg_free(msg);
14243 }
14244
14245 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14246 struct ieee80211_channel *chan,
14247 unsigned int duration, gfp_t gfp)
14248 {
14249 struct wiphy *wiphy = wdev->wiphy;
14250 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14251
14252 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14253 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14254 rdev, wdev, cookie, chan,
14255 duration, gfp);
14256 }
14257 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14258
14259 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14260 struct ieee80211_channel *chan,
14261 gfp_t gfp)
14262 {
14263 struct wiphy *wiphy = wdev->wiphy;
14264 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14265
14266 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14267 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14268 rdev, wdev, cookie, chan, 0, gfp);
14269 }
14270 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14271
14272 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14273 struct station_info *sinfo, gfp_t gfp)
14274 {
14275 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14276 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14277 struct sk_buff *msg;
14278
14279 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14280
14281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14282 if (!msg)
14283 return;
14284
14285 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14286 rdev, dev, mac_addr, sinfo) < 0) {
14287 nlmsg_free(msg);
14288 return;
14289 }
14290
14291 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14292 NL80211_MCGRP_MLME, gfp);
14293 }
14294 EXPORT_SYMBOL(cfg80211_new_sta);
14295
14296 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14297 struct station_info *sinfo, gfp_t gfp)
14298 {
14299 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14300 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14301 struct sk_buff *msg;
14302 struct station_info empty_sinfo = {};
14303
14304 if (!sinfo)
14305 sinfo = &empty_sinfo;
14306
14307 trace_cfg80211_del_sta(dev, mac_addr);
14308
14309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14310 if (!msg)
14311 return;
14312
14313 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14314 rdev, dev, mac_addr, sinfo) < 0) {
14315 nlmsg_free(msg);
14316 return;
14317 }
14318
14319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14320 NL80211_MCGRP_MLME, gfp);
14321 }
14322 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14323
14324 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14325 enum nl80211_connect_failed_reason reason,
14326 gfp_t gfp)
14327 {
14328 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14329 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14330 struct sk_buff *msg;
14331 void *hdr;
14332
14333 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14334 if (!msg)
14335 return;
14336
14337 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14338 if (!hdr) {
14339 nlmsg_free(msg);
14340 return;
14341 }
14342
14343 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14344 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14345 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14346 goto nla_put_failure;
14347
14348 genlmsg_end(msg, hdr);
14349
14350 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14351 NL80211_MCGRP_MLME, gfp);
14352 return;
14353
14354 nla_put_failure:
14355 genlmsg_cancel(msg, hdr);
14356 nlmsg_free(msg);
14357 }
14358 EXPORT_SYMBOL(cfg80211_conn_failed);
14359
14360 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14361 const u8 *addr, gfp_t gfp)
14362 {
14363 struct wireless_dev *wdev = dev->ieee80211_ptr;
14364 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14365 struct sk_buff *msg;
14366 void *hdr;
14367 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14368
14369 if (!nlportid)
14370 return false;
14371
14372 msg = nlmsg_new(100, gfp);
14373 if (!msg)
14374 return true;
14375
14376 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14377 if (!hdr) {
14378 nlmsg_free(msg);
14379 return true;
14380 }
14381
14382 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14383 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14384 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14385 goto nla_put_failure;
14386
14387 genlmsg_end(msg, hdr);
14388 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14389 return true;
14390
14391 nla_put_failure:
14392 genlmsg_cancel(msg, hdr);
14393 nlmsg_free(msg);
14394 return true;
14395 }
14396
14397 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14398 const u8 *addr, gfp_t gfp)
14399 {
14400 struct wireless_dev *wdev = dev->ieee80211_ptr;
14401 bool ret;
14402
14403 trace_cfg80211_rx_spurious_frame(dev, addr);
14404
14405 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14406 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14407 trace_cfg80211_return_bool(false);
14408 return false;
14409 }
14410 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14411 addr, gfp);
14412 trace_cfg80211_return_bool(ret);
14413 return ret;
14414 }
14415 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14416
14417 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14418 const u8 *addr, gfp_t gfp)
14419 {
14420 struct wireless_dev *wdev = dev->ieee80211_ptr;
14421 bool ret;
14422
14423 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14424
14425 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14426 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14427 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14428 trace_cfg80211_return_bool(false);
14429 return false;
14430 }
14431 ret = __nl80211_unexpected_frame(dev,
14432 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14433 addr, gfp);
14434 trace_cfg80211_return_bool(ret);
14435 return ret;
14436 }
14437 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14438
14439 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14440 struct wireless_dev *wdev, u32 nlportid,
14441 int freq, int sig_dbm,
14442 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14443 {
14444 struct net_device *netdev = wdev->netdev;
14445 struct sk_buff *msg;
14446 void *hdr;
14447
14448 msg = nlmsg_new(100 + len, gfp);
14449 if (!msg)
14450 return -ENOMEM;
14451
14452 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14453 if (!hdr) {
14454 nlmsg_free(msg);
14455 return -ENOMEM;
14456 }
14457
14458 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14459 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14460 netdev->ifindex)) ||
14461 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14462 NL80211_ATTR_PAD) ||
14463 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14464 (sig_dbm &&
14465 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14466 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14467 (flags &&
14468 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14469 goto nla_put_failure;
14470
14471 genlmsg_end(msg, hdr);
14472
14473 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14474
14475 nla_put_failure:
14476 genlmsg_cancel(msg, hdr);
14477 nlmsg_free(msg);
14478 return -ENOBUFS;
14479 }
14480
14481 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14482 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14483 {
14484 struct wiphy *wiphy = wdev->wiphy;
14485 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14486 struct net_device *netdev = wdev->netdev;
14487 struct sk_buff *msg;
14488 void *hdr;
14489
14490 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14491
14492 msg = nlmsg_new(100 + len, gfp);
14493 if (!msg)
14494 return;
14495
14496 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14497 if (!hdr) {
14498 nlmsg_free(msg);
14499 return;
14500 }
14501
14502 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14503 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14504 netdev->ifindex)) ||
14505 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14506 NL80211_ATTR_PAD) ||
14507 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14508 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14509 NL80211_ATTR_PAD) ||
14510 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14511 goto nla_put_failure;
14512
14513 genlmsg_end(msg, hdr);
14514
14515 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14516 NL80211_MCGRP_MLME, gfp);
14517 return;
14518
14519 nla_put_failure:
14520 genlmsg_cancel(msg, hdr);
14521 nlmsg_free(msg);
14522 }
14523 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14524
14525 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14526 const char *mac, gfp_t gfp)
14527 {
14528 struct wireless_dev *wdev = dev->ieee80211_ptr;
14529 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14530 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14531 void **cb;
14532
14533 if (!msg)
14534 return NULL;
14535
14536 cb = (void **)msg->cb;
14537
14538 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14539 if (!cb[0]) {
14540 nlmsg_free(msg);
14541 return NULL;
14542 }
14543
14544 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14545 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14546 goto nla_put_failure;
14547
14548 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14549 goto nla_put_failure;
14550
14551 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14552 if (!cb[1])
14553 goto nla_put_failure;
14554
14555 cb[2] = rdev;
14556
14557 return msg;
14558 nla_put_failure:
14559 nlmsg_free(msg);
14560 return NULL;
14561 }
14562
14563 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14564 {
14565 void **cb = (void **)msg->cb;
14566 struct cfg80211_registered_device *rdev = cb[2];
14567
14568 nla_nest_end(msg, cb[1]);
14569 genlmsg_end(msg, cb[0]);
14570
14571 memset(msg->cb, 0, sizeof(msg->cb));
14572
14573 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14574 NL80211_MCGRP_MLME, gfp);
14575 }
14576
14577 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14578 enum nl80211_cqm_rssi_threshold_event rssi_event,
14579 s32 rssi_level, gfp_t gfp)
14580 {
14581 struct sk_buff *msg;
14582 struct wireless_dev *wdev = dev->ieee80211_ptr;
14583 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14584
14585 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14586
14587 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14588 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14589 return;
14590
14591 if (wdev->cqm_config) {
14592 wdev->cqm_config->last_rssi_event_value = rssi_level;
14593
14594 cfg80211_cqm_rssi_update(rdev, dev);
14595
14596 if (rssi_level == 0)
14597 rssi_level = wdev->cqm_config->last_rssi_event_value;
14598 }
14599
14600 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14601 if (!msg)
14602 return;
14603
14604 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14605 rssi_event))
14606 goto nla_put_failure;
14607
14608 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14609 rssi_level))
14610 goto nla_put_failure;
14611
14612 cfg80211_send_cqm(msg, gfp);
14613
14614 return;
14615
14616 nla_put_failure:
14617 nlmsg_free(msg);
14618 }
14619 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14620
14621 void cfg80211_cqm_txe_notify(struct net_device *dev,
14622 const u8 *peer, u32 num_packets,
14623 u32 rate, u32 intvl, gfp_t gfp)
14624 {
14625 struct sk_buff *msg;
14626
14627 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14628 if (!msg)
14629 return;
14630
14631 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14632 goto nla_put_failure;
14633
14634 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14635 goto nla_put_failure;
14636
14637 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14638 goto nla_put_failure;
14639
14640 cfg80211_send_cqm(msg, gfp);
14641 return;
14642
14643 nla_put_failure:
14644 nlmsg_free(msg);
14645 }
14646 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14647
14648 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14649 const u8 *peer, u32 num_packets, gfp_t gfp)
14650 {
14651 struct sk_buff *msg;
14652
14653 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14654
14655 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14656 if (!msg)
14657 return;
14658
14659 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14660 goto nla_put_failure;
14661
14662 cfg80211_send_cqm(msg, gfp);
14663 return;
14664
14665 nla_put_failure:
14666 nlmsg_free(msg);
14667 }
14668 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14669
14670 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14671 {
14672 struct sk_buff *msg;
14673
14674 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14675 if (!msg)
14676 return;
14677
14678 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14679 goto nla_put_failure;
14680
14681 cfg80211_send_cqm(msg, gfp);
14682 return;
14683
14684 nla_put_failure:
14685 nlmsg_free(msg);
14686 }
14687 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14688
14689 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14690 struct net_device *netdev, const u8 *bssid,
14691 const u8 *replay_ctr, gfp_t gfp)
14692 {
14693 struct sk_buff *msg;
14694 struct nlattr *rekey_attr;
14695 void *hdr;
14696
14697 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14698 if (!msg)
14699 return;
14700
14701 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14702 if (!hdr) {
14703 nlmsg_free(msg);
14704 return;
14705 }
14706
14707 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14708 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14709 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14710 goto nla_put_failure;
14711
14712 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14713 if (!rekey_attr)
14714 goto nla_put_failure;
14715
14716 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14717 NL80211_REPLAY_CTR_LEN, replay_ctr))
14718 goto nla_put_failure;
14719
14720 nla_nest_end(msg, rekey_attr);
14721
14722 genlmsg_end(msg, hdr);
14723
14724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14725 NL80211_MCGRP_MLME, gfp);
14726 return;
14727
14728 nla_put_failure:
14729 genlmsg_cancel(msg, hdr);
14730 nlmsg_free(msg);
14731 }
14732
14733 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14734 const u8 *replay_ctr, gfp_t gfp)
14735 {
14736 struct wireless_dev *wdev = dev->ieee80211_ptr;
14737 struct wiphy *wiphy = wdev->wiphy;
14738 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14739
14740 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14741 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14742 }
14743 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14744
14745 static void
14746 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14747 struct net_device *netdev, int index,
14748 const u8 *bssid, bool preauth, gfp_t gfp)
14749 {
14750 struct sk_buff *msg;
14751 struct nlattr *attr;
14752 void *hdr;
14753
14754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14755 if (!msg)
14756 return;
14757
14758 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14759 if (!hdr) {
14760 nlmsg_free(msg);
14761 return;
14762 }
14763
14764 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14765 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14766 goto nla_put_failure;
14767
14768 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14769 if (!attr)
14770 goto nla_put_failure;
14771
14772 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14773 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14774 (preauth &&
14775 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14776 goto nla_put_failure;
14777
14778 nla_nest_end(msg, attr);
14779
14780 genlmsg_end(msg, hdr);
14781
14782 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14783 NL80211_MCGRP_MLME, gfp);
14784 return;
14785
14786 nla_put_failure:
14787 genlmsg_cancel(msg, hdr);
14788 nlmsg_free(msg);
14789 }
14790
14791 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14792 const u8 *bssid, bool preauth, gfp_t gfp)
14793 {
14794 struct wireless_dev *wdev = dev->ieee80211_ptr;
14795 struct wiphy *wiphy = wdev->wiphy;
14796 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14797
14798 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14799 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14800 }
14801 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14802
14803 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14804 struct net_device *netdev,
14805 struct cfg80211_chan_def *chandef,
14806 gfp_t gfp,
14807 enum nl80211_commands notif,
14808 u8 count)
14809 {
14810 struct sk_buff *msg;
14811 void *hdr;
14812
14813 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14814 if (!msg)
14815 return;
14816
14817 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14818 if (!hdr) {
14819 nlmsg_free(msg);
14820 return;
14821 }
14822
14823 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14824 goto nla_put_failure;
14825
14826 if (nl80211_send_chandef(msg, chandef))
14827 goto nla_put_failure;
14828
14829 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14830 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14831 goto nla_put_failure;
14832
14833 genlmsg_end(msg, hdr);
14834
14835 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14836 NL80211_MCGRP_MLME, gfp);
14837 return;
14838
14839 nla_put_failure:
14840 genlmsg_cancel(msg, hdr);
14841 nlmsg_free(msg);
14842 }
14843
14844 void cfg80211_ch_switch_notify(struct net_device *dev,
14845 struct cfg80211_chan_def *chandef)
14846 {
14847 struct wireless_dev *wdev = dev->ieee80211_ptr;
14848 struct wiphy *wiphy = wdev->wiphy;
14849 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14850
14851 ASSERT_WDEV_LOCK(wdev);
14852
14853 trace_cfg80211_ch_switch_notify(dev, chandef);
14854
14855 wdev->chandef = *chandef;
14856 wdev->preset_chandef = *chandef;
14857
14858 if (wdev->iftype == NL80211_IFTYPE_STATION &&
14859 !WARN_ON(!wdev->current_bss))
14860 wdev->current_bss->pub.channel = chandef->chan;
14861
14862 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14863 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14864 }
14865 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14866
14867 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14868 struct cfg80211_chan_def *chandef,
14869 u8 count)
14870 {
14871 struct wireless_dev *wdev = dev->ieee80211_ptr;
14872 struct wiphy *wiphy = wdev->wiphy;
14873 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14874
14875 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14876
14877 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14878 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14879 }
14880 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14881
14882 void
14883 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14884 const struct cfg80211_chan_def *chandef,
14885 enum nl80211_radar_event event,
14886 struct net_device *netdev, gfp_t gfp)
14887 {
14888 struct sk_buff *msg;
14889 void *hdr;
14890
14891 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14892 if (!msg)
14893 return;
14894
14895 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14896 if (!hdr) {
14897 nlmsg_free(msg);
14898 return;
14899 }
14900
14901 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14902 goto nla_put_failure;
14903
14904 /* NOP and radar events don't need a netdev parameter */
14905 if (netdev) {
14906 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14907
14908 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14909 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14910 NL80211_ATTR_PAD))
14911 goto nla_put_failure;
14912 }
14913
14914 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14915 goto nla_put_failure;
14916
14917 if (nl80211_send_chandef(msg, chandef))
14918 goto nla_put_failure;
14919
14920 genlmsg_end(msg, hdr);
14921
14922 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14923 NL80211_MCGRP_MLME, gfp);
14924 return;
14925
14926 nla_put_failure:
14927 genlmsg_cancel(msg, hdr);
14928 nlmsg_free(msg);
14929 }
14930
14931 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14932 u64 cookie, bool acked, gfp_t gfp)
14933 {
14934 struct wireless_dev *wdev = dev->ieee80211_ptr;
14935 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14936 struct sk_buff *msg;
14937 void *hdr;
14938
14939 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14940
14941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14942
14943 if (!msg)
14944 return;
14945
14946 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14947 if (!hdr) {
14948 nlmsg_free(msg);
14949 return;
14950 }
14951
14952 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14953 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14954 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14955 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14956 NL80211_ATTR_PAD) ||
14957 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14958 goto nla_put_failure;
14959
14960 genlmsg_end(msg, hdr);
14961
14962 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14963 NL80211_MCGRP_MLME, gfp);
14964 return;
14965
14966 nla_put_failure:
14967 genlmsg_cancel(msg, hdr);
14968 nlmsg_free(msg);
14969 }
14970 EXPORT_SYMBOL(cfg80211_probe_status);
14971
14972 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14973 const u8 *frame, size_t len,
14974 int freq, int sig_dbm)
14975 {
14976 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14977 struct sk_buff *msg;
14978 void *hdr;
14979 struct cfg80211_beacon_registration *reg;
14980
14981 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14982
14983 spin_lock_bh(&rdev->beacon_registrations_lock);
14984 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14985 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14986 if (!msg) {
14987 spin_unlock_bh(&rdev->beacon_registrations_lock);
14988 return;
14989 }
14990
14991 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14992 if (!hdr)
14993 goto nla_put_failure;
14994
14995 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14996 (freq &&
14997 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14998 (sig_dbm &&
14999 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15000 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15001 goto nla_put_failure;
15002
15003 genlmsg_end(msg, hdr);
15004
15005 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15006 }
15007 spin_unlock_bh(&rdev->beacon_registrations_lock);
15008 return;
15009
15010 nla_put_failure:
15011 spin_unlock_bh(&rdev->beacon_registrations_lock);
15012 if (hdr)
15013 genlmsg_cancel(msg, hdr);
15014 nlmsg_free(msg);
15015 }
15016 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15017
15018 #ifdef CONFIG_PM
15019 static int cfg80211_net_detect_results(struct sk_buff *msg,
15020 struct cfg80211_wowlan_wakeup *wakeup)
15021 {
15022 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15023 struct nlattr *nl_results, *nl_match, *nl_freqs;
15024 int i, j;
15025
15026 nl_results = nla_nest_start(
15027 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15028 if (!nl_results)
15029 return -EMSGSIZE;
15030
15031 for (i = 0; i < nd->n_matches; i++) {
15032 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15033
15034 nl_match = nla_nest_start(msg, i);
15035 if (!nl_match)
15036 break;
15037
15038 /* The SSID attribute is optional in nl80211, but for
15039 * simplicity reasons it's always present in the
15040 * cfg80211 structure. If a driver can't pass the
15041 * SSID, that needs to be changed. A zero length SSID
15042 * is still a valid SSID (wildcard), so it cannot be
15043 * used for this purpose.
15044 */
15045 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15046 match->ssid.ssid)) {
15047 nla_nest_cancel(msg, nl_match);
15048 goto out;
15049 }
15050
15051 if (match->n_channels) {
15052 nl_freqs = nla_nest_start(
15053 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15054 if (!nl_freqs) {
15055 nla_nest_cancel(msg, nl_match);
15056 goto out;
15057 }
15058
15059 for (j = 0; j < match->n_channels; j++) {
15060 if (nla_put_u32(msg, j, match->channels[j])) {
15061 nla_nest_cancel(msg, nl_freqs);
15062 nla_nest_cancel(msg, nl_match);
15063 goto out;
15064 }
15065 }
15066
15067 nla_nest_end(msg, nl_freqs);
15068 }
15069
15070 nla_nest_end(msg, nl_match);
15071 }
15072
15073 out:
15074 nla_nest_end(msg, nl_results);
15075 return 0;
15076 }
15077
15078 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15079 struct cfg80211_wowlan_wakeup *wakeup,
15080 gfp_t gfp)
15081 {
15082 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15083 struct sk_buff *msg;
15084 void *hdr;
15085 int size = 200;
15086
15087 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15088
15089 if (wakeup)
15090 size += wakeup->packet_present_len;
15091
15092 msg = nlmsg_new(size, gfp);
15093 if (!msg)
15094 return;
15095
15096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15097 if (!hdr)
15098 goto free_msg;
15099
15100 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15101 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15102 NL80211_ATTR_PAD))
15103 goto free_msg;
15104
15105 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15106 wdev->netdev->ifindex))
15107 goto free_msg;
15108
15109 if (wakeup) {
15110 struct nlattr *reasons;
15111
15112 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15113 if (!reasons)
15114 goto free_msg;
15115
15116 if (wakeup->disconnect &&
15117 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15118 goto free_msg;
15119 if (wakeup->magic_pkt &&
15120 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15121 goto free_msg;
15122 if (wakeup->gtk_rekey_failure &&
15123 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15124 goto free_msg;
15125 if (wakeup->eap_identity_req &&
15126 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15127 goto free_msg;
15128 if (wakeup->four_way_handshake &&
15129 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15130 goto free_msg;
15131 if (wakeup->rfkill_release &&
15132 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15133 goto free_msg;
15134
15135 if (wakeup->pattern_idx >= 0 &&
15136 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15137 wakeup->pattern_idx))
15138 goto free_msg;
15139
15140 if (wakeup->tcp_match &&
15141 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15142 goto free_msg;
15143
15144 if (wakeup->tcp_connlost &&
15145 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15146 goto free_msg;
15147
15148 if (wakeup->tcp_nomoretokens &&
15149 nla_put_flag(msg,
15150 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15151 goto free_msg;
15152
15153 if (wakeup->packet) {
15154 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15155 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15156
15157 if (!wakeup->packet_80211) {
15158 pkt_attr =
15159 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15160 len_attr =
15161 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15162 }
15163
15164 if (wakeup->packet_len &&
15165 nla_put_u32(msg, len_attr, wakeup->packet_len))
15166 goto free_msg;
15167
15168 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15169 wakeup->packet))
15170 goto free_msg;
15171 }
15172
15173 if (wakeup->net_detect &&
15174 cfg80211_net_detect_results(msg, wakeup))
15175 goto free_msg;
15176
15177 nla_nest_end(msg, reasons);
15178 }
15179
15180 genlmsg_end(msg, hdr);
15181
15182 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15183 NL80211_MCGRP_MLME, gfp);
15184 return;
15185
15186 free_msg:
15187 nlmsg_free(msg);
15188 }
15189 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15190 #endif
15191
15192 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15193 enum nl80211_tdls_operation oper,
15194 u16 reason_code, gfp_t gfp)
15195 {
15196 struct wireless_dev *wdev = dev->ieee80211_ptr;
15197 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15198 struct sk_buff *msg;
15199 void *hdr;
15200
15201 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15202 reason_code);
15203
15204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15205 if (!msg)
15206 return;
15207
15208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15209 if (!hdr) {
15210 nlmsg_free(msg);
15211 return;
15212 }
15213
15214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15216 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15217 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15218 (reason_code > 0 &&
15219 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15220 goto nla_put_failure;
15221
15222 genlmsg_end(msg, hdr);
15223
15224 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15225 NL80211_MCGRP_MLME, gfp);
15226 return;
15227
15228 nla_put_failure:
15229 genlmsg_cancel(msg, hdr);
15230 nlmsg_free(msg);
15231 }
15232 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15233
15234 static int nl80211_netlink_notify(struct notifier_block * nb,
15235 unsigned long state,
15236 void *_notify)
15237 {
15238 struct netlink_notify *notify = _notify;
15239 struct cfg80211_registered_device *rdev;
15240 struct wireless_dev *wdev;
15241 struct cfg80211_beacon_registration *reg, *tmp;
15242
15243 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15244 return NOTIFY_DONE;
15245
15246 rcu_read_lock();
15247
15248 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15249 struct cfg80211_sched_scan_request *sched_scan_req;
15250
15251 list_for_each_entry_rcu(sched_scan_req,
15252 &rdev->sched_scan_req_list,
15253 list) {
15254 if (sched_scan_req->owner_nlportid == notify->portid) {
15255 sched_scan_req->nl_owner_dead = true;
15256 schedule_work(&rdev->sched_scan_stop_wk);
15257 }
15258 }
15259
15260 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15261 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15262
15263 if (wdev->owner_nlportid == notify->portid) {
15264 wdev->nl_owner_dead = true;
15265 schedule_work(&rdev->destroy_work);
15266 } else if (wdev->conn_owner_nlportid == notify->portid) {
15267 schedule_work(&wdev->disconnect_wk);
15268 }
15269 }
15270
15271 spin_lock_bh(&rdev->beacon_registrations_lock);
15272 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15273 list) {
15274 if (reg->nlportid == notify->portid) {
15275 list_del(&reg->list);
15276 kfree(reg);
15277 break;
15278 }
15279 }
15280 spin_unlock_bh(&rdev->beacon_registrations_lock);
15281 }
15282
15283 rcu_read_unlock();
15284
15285 /*
15286 * It is possible that the user space process that is controlling the
15287 * indoor setting disappeared, so notify the regulatory core.
15288 */
15289 regulatory_netlink_notify(notify->portid);
15290 return NOTIFY_OK;
15291 }
15292
15293 static struct notifier_block nl80211_netlink_notifier = {
15294 .notifier_call = nl80211_netlink_notify,
15295 };
15296
15297 void cfg80211_ft_event(struct net_device *netdev,
15298 struct cfg80211_ft_event_params *ft_event)
15299 {
15300 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15301 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15302 struct sk_buff *msg;
15303 void *hdr;
15304
15305 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15306
15307 if (!ft_event->target_ap)
15308 return;
15309
15310 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15311 if (!msg)
15312 return;
15313
15314 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15315 if (!hdr)
15316 goto out;
15317
15318 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15319 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15320 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15321 goto out;
15322
15323 if (ft_event->ies &&
15324 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15325 goto out;
15326 if (ft_event->ric_ies &&
15327 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15328 ft_event->ric_ies))
15329 goto out;
15330
15331 genlmsg_end(msg, hdr);
15332
15333 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15334 NL80211_MCGRP_MLME, GFP_KERNEL);
15335 return;
15336 out:
15337 nlmsg_free(msg);
15338 }
15339 EXPORT_SYMBOL(cfg80211_ft_event);
15340
15341 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15342 {
15343 struct cfg80211_registered_device *rdev;
15344 struct sk_buff *msg;
15345 void *hdr;
15346 u32 nlportid;
15347
15348 rdev = wiphy_to_rdev(wdev->wiphy);
15349 if (!rdev->crit_proto_nlportid)
15350 return;
15351
15352 nlportid = rdev->crit_proto_nlportid;
15353 rdev->crit_proto_nlportid = 0;
15354
15355 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15356 if (!msg)
15357 return;
15358
15359 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15360 if (!hdr)
15361 goto nla_put_failure;
15362
15363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15364 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15365 NL80211_ATTR_PAD))
15366 goto nla_put_failure;
15367
15368 genlmsg_end(msg, hdr);
15369
15370 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15371 return;
15372
15373 nla_put_failure:
15374 if (hdr)
15375 genlmsg_cancel(msg, hdr);
15376 nlmsg_free(msg);
15377 }
15378 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15379
15380 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15381 {
15382 struct wiphy *wiphy = wdev->wiphy;
15383 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15384 struct sk_buff *msg;
15385 void *hdr;
15386
15387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15388 if (!msg)
15389 return;
15390
15391 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15392 if (!hdr)
15393 goto out;
15394
15395 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15396 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15397 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15398 NL80211_ATTR_PAD))
15399 goto out;
15400
15401 genlmsg_end(msg, hdr);
15402
15403 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15404 NL80211_MCGRP_MLME, GFP_KERNEL);
15405 return;
15406 out:
15407 nlmsg_free(msg);
15408 }
15409
15410 /* initialisation/exit functions */
15411
15412 int __init nl80211_init(void)
15413 {
15414 int err;
15415
15416 err = genl_register_family(&nl80211_fam);
15417 if (err)
15418 return err;
15419
15420 err = netlink_register_notifier(&nl80211_netlink_notifier);
15421 if (err)
15422 goto err_out;
15423
15424 return 0;
15425 err_out:
15426 genl_unregister_family(&nl80211_fam);
15427 return err;
15428 }
15429
15430 void nl80211_exit(void)
15431 {
15432 netlink_unregister_notifier(&nl80211_netlink_notifier);
15433 genl_unregister_family(&nl80211_fam);
15434 }
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