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Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[mirror_ubuntu-jammy-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 * Copyright (C) 2018-2019 Intel Corporation
8 */
9
10 #include <linux/if.h>
11 #include <linux/module.h>
12 #include <linux/err.h>
13 #include <linux/slab.h>
14 #include <linux/list.h>
15 #include <linux/if_ether.h>
16 #include <linux/ieee80211.h>
17 #include <linux/nl80211.h>
18 #include <linux/rtnetlink.h>
19 #include <linux/netlink.h>
20 #include <linux/nospec.h>
21 #include <linux/etherdevice.h>
22 #include <net/net_namespace.h>
23 #include <net/genetlink.h>
24 #include <net/cfg80211.h>
25 #include <net/sock.h>
26 #include <net/inet_connection_sock.h>
27 #include "core.h"
28 #include "nl80211.h"
29 #include "reg.h"
30 #include "rdev-ops.h"
31
32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
33 struct genl_info *info,
34 struct cfg80211_crypto_settings *settings,
35 int cipher_limit);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam;
39
40 /* multicast groups */
41 enum nl80211_multicast_groups {
42 NL80211_MCGRP_CONFIG,
43 NL80211_MCGRP_SCAN,
44 NL80211_MCGRP_REGULATORY,
45 NL80211_MCGRP_MLME,
46 NL80211_MCGRP_VENDOR,
47 NL80211_MCGRP_NAN,
48 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
49 };
50
51 static const struct genl_multicast_group nl80211_mcgrps[] = {
52 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
53 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
54 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
55 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
56 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
57 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
58 #ifdef CONFIG_NL80211_TESTMODE
59 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
60 #endif
61 };
62
63 /* returns ERR_PTR values */
64 static struct wireless_dev *
65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
66 {
67 struct cfg80211_registered_device *rdev;
68 struct wireless_dev *result = NULL;
69 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
70 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
71 u64 wdev_id;
72 int wiphy_idx = -1;
73 int ifidx = -1;
74
75 ASSERT_RTNL();
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
88 struct wireless_dev *wdev;
89
90 if (wiphy_net(&rdev->wiphy) != netns)
91 continue;
92
93 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
94 continue;
95
96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
97 if (have_ifidx && wdev->netdev &&
98 wdev->netdev->ifindex == ifidx) {
99 result = wdev;
100 break;
101 }
102 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
103 result = wdev;
104 break;
105 }
106 }
107
108 if (result)
109 break;
110 }
111
112 if (result)
113 return result;
114 return ERR_PTR(-ENODEV);
115 }
116
117 static struct cfg80211_registered_device *
118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
119 {
120 struct cfg80211_registered_device *rdev = NULL, *tmp;
121 struct net_device *netdev;
122
123 ASSERT_RTNL();
124
125 if (!attrs[NL80211_ATTR_WIPHY] &&
126 !attrs[NL80211_ATTR_IFINDEX] &&
127 !attrs[NL80211_ATTR_WDEV])
128 return ERR_PTR(-EINVAL);
129
130 if (attrs[NL80211_ATTR_WIPHY])
131 rdev = cfg80211_rdev_by_wiphy_idx(
132 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
133
134 if (attrs[NL80211_ATTR_WDEV]) {
135 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
136 struct wireless_dev *wdev;
137 bool found = false;
138
139 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
140 if (tmp) {
141 /* make sure wdev exists */
142 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
143 if (wdev->identifier != (u32)wdev_id)
144 continue;
145 found = true;
146 break;
147 }
148
149 if (!found)
150 tmp = NULL;
151
152 if (rdev && tmp != rdev)
153 return ERR_PTR(-EINVAL);
154 rdev = tmp;
155 }
156 }
157
158 if (attrs[NL80211_ATTR_IFINDEX]) {
159 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
160
161 netdev = __dev_get_by_index(netns, ifindex);
162 if (netdev) {
163 if (netdev->ieee80211_ptr)
164 tmp = wiphy_to_rdev(
165 netdev->ieee80211_ptr->wiphy);
166 else
167 tmp = NULL;
168
169 /* not wireless device -- return error */
170 if (!tmp)
171 return ERR_PTR(-EINVAL);
172
173 /* mismatch -- return error */
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176
177 rdev = tmp;
178 }
179 }
180
181 if (!rdev)
182 return ERR_PTR(-ENODEV);
183
184 if (netns != wiphy_net(&rdev->wiphy))
185 return ERR_PTR(-ENODEV);
186
187 return rdev;
188 }
189
190 /*
191 * This function returns a pointer to the driver
192 * that the genl_info item that is passed refers to.
193 *
194 * The result of this can be a PTR_ERR and hence must
195 * be checked with IS_ERR() for errors.
196 */
197 static struct cfg80211_registered_device *
198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
199 {
200 return __cfg80211_rdev_from_attrs(netns, info->attrs);
201 }
202
203 static int validate_ie_attr(const struct nlattr *attr,
204 struct netlink_ext_ack *extack)
205 {
206 const u8 *data = nla_data(attr);
207 unsigned int len = nla_len(attr);
208 const struct element *elem;
209
210 for_each_element(elem, data, len) {
211 /* nothing */
212 }
213
214 if (for_each_element_completed(elem, data, len))
215 return 0;
216
217 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
218 return -EINVAL;
219 }
220
221 /* policy for the attributes */
222 static const struct nla_policy
223 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
224 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
225 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
226 .len = U8_MAX },
227 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
228 .len = U8_MAX },
229 };
230
231 static const struct nla_policy
232 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
233 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
234 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
235 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
236 NLA_POLICY_MAX(NLA_U8, 15),
237 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
238 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
239 NLA_POLICY_MAX(NLA_U8, 15),
240 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
241 NLA_POLICY_MAX(NLA_U8, 31),
242 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
243 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
244 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
245 };
246
247 static const struct nla_policy
248 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
249 [NL80211_PMSR_TYPE_FTM] =
250 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
251 };
252
253 static const struct nla_policy
254 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
255 [NL80211_PMSR_REQ_ATTR_DATA] =
256 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
257 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
258 };
259
260 static const struct nla_policy
261 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
262 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
263 /*
264 * we could specify this again to be the top-level policy,
265 * but that would open us up to recursion problems ...
266 */
267 [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
268 [NL80211_PMSR_PEER_ATTR_REQ] =
269 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
270 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
271 };
272
273 static const struct nla_policy
274 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
275 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
276 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
277 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
278 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
279 [NL80211_PMSR_ATTR_PEERS] =
280 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
281 };
282
283 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
284 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
285 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
286 .len = 20-1 },
287 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
288
289 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
290 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
291 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
292 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
293 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
294
295 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
296 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
297 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
298 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
299 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
300 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
301
302 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
303 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
304 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
305
306 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
307 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
308
309 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
310 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
311 .len = WLAN_MAX_KEY_LEN },
312 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
313 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
314 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
315 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
316 [NL80211_ATTR_KEY_TYPE] =
317 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
318
319 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
320 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
321 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
322 .len = IEEE80211_MAX_DATA_LEN },
323 [NL80211_ATTR_BEACON_TAIL] =
324 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
325 IEEE80211_MAX_DATA_LEN),
326 [NL80211_ATTR_STA_AID] =
327 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
328 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
329 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
330 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
331 .len = NL80211_MAX_SUPP_RATES },
332 [NL80211_ATTR_STA_PLINK_ACTION] =
333 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
334 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
335 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
336 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
337 .len = IEEE80211_MAX_MESH_ID_LEN },
338 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
339
340 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
341 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
342
343 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
344 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
345 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
346 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
347 .len = NL80211_MAX_SUPP_RATES },
348 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
349
350 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
351 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
352
353 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
354
355 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
356 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
357 validate_ie_attr,
358 IEEE80211_MAX_DATA_LEN),
359 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
360 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
361
362 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
363 .len = IEEE80211_MAX_SSID_LEN },
364 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
365 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
366 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
367 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
368 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
369 NL80211_MFP_NO,
370 NL80211_MFP_OPTIONAL),
371 [NL80211_ATTR_STA_FLAGS2] = {
372 .len = sizeof(struct nl80211_sta_flag_update),
373 },
374 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
375 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
376 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
377 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
378 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
379 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
380 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
381 [NL80211_ATTR_PID] = { .type = NLA_U32 },
382 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
383 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
384 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
385 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
386 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
387 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
388 .len = IEEE80211_MAX_DATA_LEN },
389 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
390 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
391 NL80211_PS_DISABLED,
392 NL80211_PS_ENABLED),
393 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
394 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
395 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
396 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
397 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
398 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
399 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
400 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
401 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
402 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
403 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
404 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
405 [NL80211_ATTR_STA_PLINK_STATE] =
406 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
407 [NL80211_ATTR_MESH_PEER_AID] =
408 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
409 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
410 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
411 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
412 [NL80211_ATTR_HIDDEN_SSID] =
413 NLA_POLICY_RANGE(NLA_U32,
414 NL80211_HIDDEN_SSID_NOT_IN_USE,
415 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
416 [NL80211_ATTR_IE_PROBE_RESP] =
417 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
418 IEEE80211_MAX_DATA_LEN),
419 [NL80211_ATTR_IE_ASSOC_RESP] =
420 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
421 IEEE80211_MAX_DATA_LEN),
422 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
423 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
424 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
425 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
426 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
427 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
428 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
429 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
430 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
431 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
432 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
433 .len = IEEE80211_MAX_DATA_LEN },
434 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
435 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
436 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
437 .len = NL80211_HT_CAPABILITY_LEN
438 },
439 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
440 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
441 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
442 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
443 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
444 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
445 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
446 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
447 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
448 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
449 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
450 NLA_POLICY_RANGE(NLA_U32,
451 NL80211_MESH_POWER_UNKNOWN + 1,
452 NL80211_MESH_POWER_MAX),
453 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
454 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
455 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
456 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
457 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
458 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
459 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
460 .len = NL80211_VHT_CAPABILITY_LEN,
461 },
462 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
463 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
464 .len = IEEE80211_MAX_DATA_LEN },
465 [NL80211_ATTR_PEER_AID] =
466 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
467 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
468 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
469 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
470 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
471 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
472 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
473 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
474 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
475 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
476 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
477 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
478 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
479 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
480 .len = IEEE80211_QOS_MAP_LEN_MAX },
481 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
482 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
483 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
484 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
485 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
486 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
487 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
488 [NL80211_ATTR_USER_PRIO] =
489 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
490 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
491 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
492 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
493 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
494 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
495 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
496 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
497 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
498 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
499 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
500 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
501 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
502 .len = VHT_MUMIMO_GROUPS_DATA_LEN
503 },
504 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
505 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
506 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
507 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
508 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
509 .len = FILS_MAX_KEK_LEN },
510 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
511 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
512 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
513 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
514 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
515 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
516 },
517 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
518 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
519 .len = FILS_ERP_MAX_USERNAME_LEN },
520 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
521 .len = FILS_ERP_MAX_REALM_LEN },
522 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
523 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
524 .len = FILS_ERP_MAX_RRK_LEN },
525 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
526 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
527 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
528 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
529
530 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
531 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
532 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
533 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
534 .len = NL80211_HE_MAX_CAPABILITY_LEN },
535
536 [NL80211_ATTR_FTM_RESPONDER] = {
537 .type = NLA_NESTED,
538 .validation_data = nl80211_ftm_responder_policy,
539 },
540 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
541 [NL80211_ATTR_PEER_MEASUREMENTS] =
542 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
543 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
544 };
545
546 /* policy for the key attributes */
547 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
548 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
549 [NL80211_KEY_IDX] = { .type = NLA_U8 },
550 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
551 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
552 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
553 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
554 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
555 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
556 };
557
558 /* policy for the key default flags */
559 static const struct nla_policy
560 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
561 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
562 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
563 };
564
565 #ifdef CONFIG_PM
566 /* policy for WoWLAN attributes */
567 static const struct nla_policy
568 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
569 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
570 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
571 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
572 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
573 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
574 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
575 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
576 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
577 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
578 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
579 };
580
581 static const struct nla_policy
582 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
583 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
584 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
585 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
586 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
587 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
588 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
589 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
590 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
591 },
592 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
593 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
594 },
595 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
596 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
597 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
598 };
599 #endif /* CONFIG_PM */
600
601 /* policy for coalesce rule attributes */
602 static const struct nla_policy
603 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
604 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
605 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
606 NLA_POLICY_RANGE(NLA_U32,
607 NL80211_COALESCE_CONDITION_MATCH,
608 NL80211_COALESCE_CONDITION_NO_MATCH),
609 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
610 };
611
612 /* policy for GTK rekey offload attributes */
613 static const struct nla_policy
614 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
615 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
616 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
617 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
618 };
619
620 static const struct nla_policy
621 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
622 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
623 .len = IEEE80211_MAX_SSID_LEN },
624 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
625 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
626 };
627
628 static const struct nla_policy
629 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
630 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
631 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
632 };
633
634 static const struct nla_policy
635 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
636 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
637 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
638 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
639 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
640 },
641 };
642
643 /* policy for NAN function attributes */
644 static const struct nla_policy
645 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
646 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
647 [NL80211_NAN_FUNC_SERVICE_ID] = {
648 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
649 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
650 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
651 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
652 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
653 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
654 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
655 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
656 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
657 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
658 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
659 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
660 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
661 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
662 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
663 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
664 };
665
666 /* policy for Service Response Filter attributes */
667 static const struct nla_policy
668 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
669 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
670 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
671 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
672 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
673 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
674 };
675
676 /* policy for packet pattern attributes */
677 static const struct nla_policy
678 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
679 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
680 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
681 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
682 };
683
684 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
685 struct cfg80211_registered_device **rdev,
686 struct wireless_dev **wdev)
687 {
688 int err;
689
690 if (!cb->args[0]) {
691 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
692 genl_family_attrbuf(&nl80211_fam),
693 nl80211_fam.maxattr, nl80211_policy, NULL);
694 if (err)
695 return err;
696
697 *wdev = __cfg80211_wdev_from_attrs(
698 sock_net(cb->skb->sk),
699 genl_family_attrbuf(&nl80211_fam));
700 if (IS_ERR(*wdev))
701 return PTR_ERR(*wdev);
702 *rdev = wiphy_to_rdev((*wdev)->wiphy);
703 /* 0 is the first index - add 1 to parse only once */
704 cb->args[0] = (*rdev)->wiphy_idx + 1;
705 cb->args[1] = (*wdev)->identifier;
706 } else {
707 /* subtract the 1 again here */
708 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
709 struct wireless_dev *tmp;
710
711 if (!wiphy)
712 return -ENODEV;
713 *rdev = wiphy_to_rdev(wiphy);
714 *wdev = NULL;
715
716 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
717 if (tmp->identifier == cb->args[1]) {
718 *wdev = tmp;
719 break;
720 }
721 }
722
723 if (!*wdev)
724 return -ENODEV;
725 }
726
727 return 0;
728 }
729
730 /* message building helper */
731 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
732 int flags, u8 cmd)
733 {
734 /* since there is no private header just add the generic one */
735 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
736 }
737
738 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
739 const struct ieee80211_reg_rule *rule)
740 {
741 int j;
742 struct nlattr *nl_wmm_rules =
743 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
744
745 if (!nl_wmm_rules)
746 goto nla_put_failure;
747
748 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
749 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
750
751 if (!nl_wmm_rule)
752 goto nla_put_failure;
753
754 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
755 rule->wmm_rule.client[j].cw_min) ||
756 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
757 rule->wmm_rule.client[j].cw_max) ||
758 nla_put_u8(msg, NL80211_WMMR_AIFSN,
759 rule->wmm_rule.client[j].aifsn) ||
760 nla_put_u16(msg, NL80211_WMMR_TXOP,
761 rule->wmm_rule.client[j].cot))
762 goto nla_put_failure;
763
764 nla_nest_end(msg, nl_wmm_rule);
765 }
766 nla_nest_end(msg, nl_wmm_rules);
767
768 return 0;
769
770 nla_put_failure:
771 return -ENOBUFS;
772 }
773
774 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
775 struct ieee80211_channel *chan,
776 bool large)
777 {
778 /* Some channels must be completely excluded from the
779 * list to protect old user-space tools from breaking
780 */
781 if (!large && chan->flags &
782 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
783 return 0;
784
785 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
786 chan->center_freq))
787 goto nla_put_failure;
788
789 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
790 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
791 goto nla_put_failure;
792 if (chan->flags & IEEE80211_CHAN_NO_IR) {
793 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
794 goto nla_put_failure;
795 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
796 goto nla_put_failure;
797 }
798 if (chan->flags & IEEE80211_CHAN_RADAR) {
799 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
800 goto nla_put_failure;
801 if (large) {
802 u32 time;
803
804 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
805
806 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
807 chan->dfs_state))
808 goto nla_put_failure;
809 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
810 time))
811 goto nla_put_failure;
812 if (nla_put_u32(msg,
813 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
814 chan->dfs_cac_ms))
815 goto nla_put_failure;
816 }
817 }
818
819 if (large) {
820 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
821 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
822 goto nla_put_failure;
823 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
824 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
825 goto nla_put_failure;
826 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
827 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
828 goto nla_put_failure;
829 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
830 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
831 goto nla_put_failure;
832 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
833 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
834 goto nla_put_failure;
835 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
836 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
837 goto nla_put_failure;
838 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
839 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
840 goto nla_put_failure;
841 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
842 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
843 goto nla_put_failure;
844 }
845
846 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
847 DBM_TO_MBM(chan->max_power)))
848 goto nla_put_failure;
849
850 if (large) {
851 const struct ieee80211_reg_rule *rule =
852 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
853
854 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
855 if (nl80211_msg_put_wmm_rules(msg, rule))
856 goto nla_put_failure;
857 }
858 }
859
860 return 0;
861
862 nla_put_failure:
863 return -ENOBUFS;
864 }
865
866 static bool nl80211_put_txq_stats(struct sk_buff *msg,
867 struct cfg80211_txq_stats *txqstats,
868 int attrtype)
869 {
870 struct nlattr *txqattr;
871
872 #define PUT_TXQVAL_U32(attr, memb) do { \
873 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
874 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
875 return false; \
876 } while (0)
877
878 txqattr = nla_nest_start(msg, attrtype);
879 if (!txqattr)
880 return false;
881
882 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
883 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
884 PUT_TXQVAL_U32(FLOWS, flows);
885 PUT_TXQVAL_U32(DROPS, drops);
886 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
887 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
888 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
889 PUT_TXQVAL_U32(COLLISIONS, collisions);
890 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
891 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
892 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
893 nla_nest_end(msg, txqattr);
894
895 #undef PUT_TXQVAL_U32
896 return true;
897 }
898
899 /* netlink command implementations */
900
901 struct key_parse {
902 struct key_params p;
903 int idx;
904 int type;
905 bool def, defmgmt;
906 bool def_uni, def_multi;
907 };
908
909 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
910 struct key_parse *k)
911 {
912 struct nlattr *tb[NL80211_KEY_MAX + 1];
913 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
914 nl80211_key_policy, info->extack);
915 if (err)
916 return err;
917
918 k->def = !!tb[NL80211_KEY_DEFAULT];
919 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
920
921 if (k->def) {
922 k->def_uni = true;
923 k->def_multi = true;
924 }
925 if (k->defmgmt)
926 k->def_multi = true;
927
928 if (tb[NL80211_KEY_IDX])
929 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
930
931 if (tb[NL80211_KEY_DATA]) {
932 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
933 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
934 }
935
936 if (tb[NL80211_KEY_SEQ]) {
937 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
938 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
939 }
940
941 if (tb[NL80211_KEY_CIPHER])
942 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
943
944 if (tb[NL80211_KEY_TYPE])
945 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
946
947 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
948 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
949
950 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
951 tb[NL80211_KEY_DEFAULT_TYPES],
952 nl80211_key_default_policy,
953 info->extack);
954 if (err)
955 return err;
956
957 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
958 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
959 }
960
961 return 0;
962 }
963
964 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
965 {
966 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
967 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
968 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
969 }
970
971 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
972 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
973 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
974 }
975
976 if (info->attrs[NL80211_ATTR_KEY_IDX])
977 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
978
979 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
980 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
981
982 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
983 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
984
985 if (k->def) {
986 k->def_uni = true;
987 k->def_multi = true;
988 }
989 if (k->defmgmt)
990 k->def_multi = true;
991
992 if (info->attrs[NL80211_ATTR_KEY_TYPE])
993 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
994
995 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
996 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
997 int err = nla_parse_nested(kdt,
998 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
999 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1000 nl80211_key_default_policy,
1001 info->extack);
1002 if (err)
1003 return err;
1004
1005 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1006 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1007 }
1008
1009 return 0;
1010 }
1011
1012 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1013 {
1014 int err;
1015
1016 memset(k, 0, sizeof(*k));
1017 k->idx = -1;
1018 k->type = -1;
1019
1020 if (info->attrs[NL80211_ATTR_KEY])
1021 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1022 else
1023 err = nl80211_parse_key_old(info, k);
1024
1025 if (err)
1026 return err;
1027
1028 if (k->def && k->defmgmt) {
1029 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1030 return -EINVAL;
1031 }
1032
1033 if (k->defmgmt) {
1034 if (k->def_uni || !k->def_multi) {
1035 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1036 return -EINVAL;
1037 }
1038 }
1039
1040 if (k->idx != -1) {
1041 if (k->defmgmt) {
1042 if (k->idx < 4 || k->idx > 5) {
1043 GENL_SET_ERR_MSG(info,
1044 "defmgmt key idx not 4 or 5");
1045 return -EINVAL;
1046 }
1047 } else if (k->def) {
1048 if (k->idx < 0 || k->idx > 3) {
1049 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1050 return -EINVAL;
1051 }
1052 } else {
1053 if (k->idx < 0 || k->idx > 5) {
1054 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1055 return -EINVAL;
1056 }
1057 }
1058 }
1059
1060 return 0;
1061 }
1062
1063 static struct cfg80211_cached_keys *
1064 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1065 struct genl_info *info, bool *no_ht)
1066 {
1067 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1068 struct key_parse parse;
1069 struct nlattr *key;
1070 struct cfg80211_cached_keys *result;
1071 int rem, err, def = 0;
1072 bool have_key = false;
1073
1074 nla_for_each_nested(key, keys, rem) {
1075 have_key = true;
1076 break;
1077 }
1078
1079 if (!have_key)
1080 return NULL;
1081
1082 result = kzalloc(sizeof(*result), GFP_KERNEL);
1083 if (!result)
1084 return ERR_PTR(-ENOMEM);
1085
1086 result->def = -1;
1087
1088 nla_for_each_nested(key, keys, rem) {
1089 memset(&parse, 0, sizeof(parse));
1090 parse.idx = -1;
1091
1092 err = nl80211_parse_key_new(info, key, &parse);
1093 if (err)
1094 goto error;
1095 err = -EINVAL;
1096 if (!parse.p.key)
1097 goto error;
1098 if (parse.idx < 0 || parse.idx > 3) {
1099 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1100 goto error;
1101 }
1102 if (parse.def) {
1103 if (def) {
1104 GENL_SET_ERR_MSG(info,
1105 "only one key can be default");
1106 goto error;
1107 }
1108 def = 1;
1109 result->def = parse.idx;
1110 if (!parse.def_uni || !parse.def_multi)
1111 goto error;
1112 } else if (parse.defmgmt)
1113 goto error;
1114 err = cfg80211_validate_key_settings(rdev, &parse.p,
1115 parse.idx, false, NULL);
1116 if (err)
1117 goto error;
1118 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1119 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1120 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1121 err = -EINVAL;
1122 goto error;
1123 }
1124 result->params[parse.idx].cipher = parse.p.cipher;
1125 result->params[parse.idx].key_len = parse.p.key_len;
1126 result->params[parse.idx].key = result->data[parse.idx];
1127 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1128
1129 /* must be WEP key if we got here */
1130 if (no_ht)
1131 *no_ht = true;
1132 }
1133
1134 if (result->def < 0) {
1135 err = -EINVAL;
1136 GENL_SET_ERR_MSG(info, "need a default/TX key");
1137 goto error;
1138 }
1139
1140 return result;
1141 error:
1142 kfree(result);
1143 return ERR_PTR(err);
1144 }
1145
1146 static int nl80211_key_allowed(struct wireless_dev *wdev)
1147 {
1148 ASSERT_WDEV_LOCK(wdev);
1149
1150 switch (wdev->iftype) {
1151 case NL80211_IFTYPE_AP:
1152 case NL80211_IFTYPE_AP_VLAN:
1153 case NL80211_IFTYPE_P2P_GO:
1154 case NL80211_IFTYPE_MESH_POINT:
1155 break;
1156 case NL80211_IFTYPE_ADHOC:
1157 case NL80211_IFTYPE_STATION:
1158 case NL80211_IFTYPE_P2P_CLIENT:
1159 if (!wdev->current_bss)
1160 return -ENOLINK;
1161 break;
1162 case NL80211_IFTYPE_UNSPECIFIED:
1163 case NL80211_IFTYPE_OCB:
1164 case NL80211_IFTYPE_MONITOR:
1165 case NL80211_IFTYPE_NAN:
1166 case NL80211_IFTYPE_P2P_DEVICE:
1167 case NL80211_IFTYPE_WDS:
1168 case NUM_NL80211_IFTYPES:
1169 return -EINVAL;
1170 }
1171
1172 return 0;
1173 }
1174
1175 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1176 struct nlattr *tb)
1177 {
1178 struct ieee80211_channel *chan;
1179
1180 if (tb == NULL)
1181 return NULL;
1182 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1183 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1184 return NULL;
1185 return chan;
1186 }
1187
1188 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1189 {
1190 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1191 int i;
1192
1193 if (!nl_modes)
1194 goto nla_put_failure;
1195
1196 i = 0;
1197 while (ifmodes) {
1198 if ((ifmodes & 1) && nla_put_flag(msg, i))
1199 goto nla_put_failure;
1200 ifmodes >>= 1;
1201 i++;
1202 }
1203
1204 nla_nest_end(msg, nl_modes);
1205 return 0;
1206
1207 nla_put_failure:
1208 return -ENOBUFS;
1209 }
1210
1211 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1212 struct sk_buff *msg,
1213 bool large)
1214 {
1215 struct nlattr *nl_combis;
1216 int i, j;
1217
1218 nl_combis = nla_nest_start(msg,
1219 NL80211_ATTR_INTERFACE_COMBINATIONS);
1220 if (!nl_combis)
1221 goto nla_put_failure;
1222
1223 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1224 const struct ieee80211_iface_combination *c;
1225 struct nlattr *nl_combi, *nl_limits;
1226
1227 c = &wiphy->iface_combinations[i];
1228
1229 nl_combi = nla_nest_start(msg, i + 1);
1230 if (!nl_combi)
1231 goto nla_put_failure;
1232
1233 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1234 if (!nl_limits)
1235 goto nla_put_failure;
1236
1237 for (j = 0; j < c->n_limits; j++) {
1238 struct nlattr *nl_limit;
1239
1240 nl_limit = nla_nest_start(msg, j + 1);
1241 if (!nl_limit)
1242 goto nla_put_failure;
1243 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1244 c->limits[j].max))
1245 goto nla_put_failure;
1246 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1247 c->limits[j].types))
1248 goto nla_put_failure;
1249 nla_nest_end(msg, nl_limit);
1250 }
1251
1252 nla_nest_end(msg, nl_limits);
1253
1254 if (c->beacon_int_infra_match &&
1255 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1256 goto nla_put_failure;
1257 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1258 c->num_different_channels) ||
1259 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1260 c->max_interfaces))
1261 goto nla_put_failure;
1262 if (large &&
1263 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1264 c->radar_detect_widths) ||
1265 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1266 c->radar_detect_regions)))
1267 goto nla_put_failure;
1268 if (c->beacon_int_min_gcd &&
1269 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1270 c->beacon_int_min_gcd))
1271 goto nla_put_failure;
1272
1273 nla_nest_end(msg, nl_combi);
1274 }
1275
1276 nla_nest_end(msg, nl_combis);
1277
1278 return 0;
1279 nla_put_failure:
1280 return -ENOBUFS;
1281 }
1282
1283 #ifdef CONFIG_PM
1284 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1285 struct sk_buff *msg)
1286 {
1287 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1288 struct nlattr *nl_tcp;
1289
1290 if (!tcp)
1291 return 0;
1292
1293 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1294 if (!nl_tcp)
1295 return -ENOBUFS;
1296
1297 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1298 tcp->data_payload_max))
1299 return -ENOBUFS;
1300
1301 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1302 tcp->data_payload_max))
1303 return -ENOBUFS;
1304
1305 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1306 return -ENOBUFS;
1307
1308 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1309 sizeof(*tcp->tok), tcp->tok))
1310 return -ENOBUFS;
1311
1312 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1313 tcp->data_interval_max))
1314 return -ENOBUFS;
1315
1316 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1317 tcp->wake_payload_max))
1318 return -ENOBUFS;
1319
1320 nla_nest_end(msg, nl_tcp);
1321 return 0;
1322 }
1323
1324 static int nl80211_send_wowlan(struct sk_buff *msg,
1325 struct cfg80211_registered_device *rdev,
1326 bool large)
1327 {
1328 struct nlattr *nl_wowlan;
1329
1330 if (!rdev->wiphy.wowlan)
1331 return 0;
1332
1333 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1334 if (!nl_wowlan)
1335 return -ENOBUFS;
1336
1337 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1338 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1339 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1340 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1341 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1342 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1343 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1344 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1345 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1346 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1347 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1348 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1349 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1350 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1351 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1352 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1353 return -ENOBUFS;
1354
1355 if (rdev->wiphy.wowlan->n_patterns) {
1356 struct nl80211_pattern_support pat = {
1357 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1358 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1359 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1360 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1361 };
1362
1363 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1364 sizeof(pat), &pat))
1365 return -ENOBUFS;
1366 }
1367
1368 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1369 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1370 rdev->wiphy.wowlan->max_nd_match_sets))
1371 return -ENOBUFS;
1372
1373 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1374 return -ENOBUFS;
1375
1376 nla_nest_end(msg, nl_wowlan);
1377
1378 return 0;
1379 }
1380 #endif
1381
1382 static int nl80211_send_coalesce(struct sk_buff *msg,
1383 struct cfg80211_registered_device *rdev)
1384 {
1385 struct nl80211_coalesce_rule_support rule;
1386
1387 if (!rdev->wiphy.coalesce)
1388 return 0;
1389
1390 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1391 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1392 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1393 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1394 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1395 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1396
1397 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1398 return -ENOBUFS;
1399
1400 return 0;
1401 }
1402
1403 static int
1404 nl80211_send_iftype_data(struct sk_buff *msg,
1405 const struct ieee80211_sband_iftype_data *iftdata)
1406 {
1407 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1408
1409 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1410 iftdata->types_mask))
1411 return -ENOBUFS;
1412
1413 if (he_cap->has_he) {
1414 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1415 sizeof(he_cap->he_cap_elem.mac_cap_info),
1416 he_cap->he_cap_elem.mac_cap_info) ||
1417 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1418 sizeof(he_cap->he_cap_elem.phy_cap_info),
1419 he_cap->he_cap_elem.phy_cap_info) ||
1420 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1421 sizeof(he_cap->he_mcs_nss_supp),
1422 &he_cap->he_mcs_nss_supp) ||
1423 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1424 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1425 return -ENOBUFS;
1426 }
1427
1428 return 0;
1429 }
1430
1431 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1432 struct ieee80211_supported_band *sband)
1433 {
1434 struct nlattr *nl_rates, *nl_rate;
1435 struct ieee80211_rate *rate;
1436 int i;
1437
1438 /* add HT info */
1439 if (sband->ht_cap.ht_supported &&
1440 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1441 sizeof(sband->ht_cap.mcs),
1442 &sband->ht_cap.mcs) ||
1443 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1444 sband->ht_cap.cap) ||
1445 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1446 sband->ht_cap.ampdu_factor) ||
1447 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1448 sband->ht_cap.ampdu_density)))
1449 return -ENOBUFS;
1450
1451 /* add VHT info */
1452 if (sband->vht_cap.vht_supported &&
1453 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1454 sizeof(sband->vht_cap.vht_mcs),
1455 &sband->vht_cap.vht_mcs) ||
1456 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1457 sband->vht_cap.cap)))
1458 return -ENOBUFS;
1459
1460 if (sband->n_iftype_data) {
1461 struct nlattr *nl_iftype_data =
1462 nla_nest_start(msg, NL80211_BAND_ATTR_IFTYPE_DATA);
1463 int err;
1464
1465 if (!nl_iftype_data)
1466 return -ENOBUFS;
1467
1468 for (i = 0; i < sband->n_iftype_data; i++) {
1469 struct nlattr *iftdata;
1470
1471 iftdata = nla_nest_start(msg, i + 1);
1472 if (!iftdata)
1473 return -ENOBUFS;
1474
1475 err = nl80211_send_iftype_data(msg,
1476 &sband->iftype_data[i]);
1477 if (err)
1478 return err;
1479
1480 nla_nest_end(msg, iftdata);
1481 }
1482
1483 nla_nest_end(msg, nl_iftype_data);
1484 }
1485
1486 /* add bitrates */
1487 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1488 if (!nl_rates)
1489 return -ENOBUFS;
1490
1491 for (i = 0; i < sband->n_bitrates; i++) {
1492 nl_rate = nla_nest_start(msg, i);
1493 if (!nl_rate)
1494 return -ENOBUFS;
1495
1496 rate = &sband->bitrates[i];
1497 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1498 rate->bitrate))
1499 return -ENOBUFS;
1500 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1501 nla_put_flag(msg,
1502 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1503 return -ENOBUFS;
1504
1505 nla_nest_end(msg, nl_rate);
1506 }
1507
1508 nla_nest_end(msg, nl_rates);
1509
1510 return 0;
1511 }
1512
1513 static int
1514 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1515 const struct ieee80211_txrx_stypes *mgmt_stypes)
1516 {
1517 u16 stypes;
1518 struct nlattr *nl_ftypes, *nl_ifs;
1519 enum nl80211_iftype ift;
1520 int i;
1521
1522 if (!mgmt_stypes)
1523 return 0;
1524
1525 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1526 if (!nl_ifs)
1527 return -ENOBUFS;
1528
1529 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1530 nl_ftypes = nla_nest_start(msg, ift);
1531 if (!nl_ftypes)
1532 return -ENOBUFS;
1533 i = 0;
1534 stypes = mgmt_stypes[ift].tx;
1535 while (stypes) {
1536 if ((stypes & 1) &&
1537 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1538 (i << 4) | IEEE80211_FTYPE_MGMT))
1539 return -ENOBUFS;
1540 stypes >>= 1;
1541 i++;
1542 }
1543 nla_nest_end(msg, nl_ftypes);
1544 }
1545
1546 nla_nest_end(msg, nl_ifs);
1547
1548 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1549 if (!nl_ifs)
1550 return -ENOBUFS;
1551
1552 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1553 nl_ftypes = nla_nest_start(msg, ift);
1554 if (!nl_ftypes)
1555 return -ENOBUFS;
1556 i = 0;
1557 stypes = mgmt_stypes[ift].rx;
1558 while (stypes) {
1559 if ((stypes & 1) &&
1560 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1561 (i << 4) | IEEE80211_FTYPE_MGMT))
1562 return -ENOBUFS;
1563 stypes >>= 1;
1564 i++;
1565 }
1566 nla_nest_end(msg, nl_ftypes);
1567 }
1568 nla_nest_end(msg, nl_ifs);
1569
1570 return 0;
1571 }
1572
1573 #define CMD(op, n) \
1574 do { \
1575 if (rdev->ops->op) { \
1576 i++; \
1577 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1578 goto nla_put_failure; \
1579 } \
1580 } while (0)
1581
1582 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1583 struct sk_buff *msg)
1584 {
1585 int i = 0;
1586
1587 /*
1588 * do *NOT* add anything into this function, new things need to be
1589 * advertised only to new versions of userspace that can deal with
1590 * the split (and they can't possibly care about new features...
1591 */
1592 CMD(add_virtual_intf, NEW_INTERFACE);
1593 CMD(change_virtual_intf, SET_INTERFACE);
1594 CMD(add_key, NEW_KEY);
1595 CMD(start_ap, START_AP);
1596 CMD(add_station, NEW_STATION);
1597 CMD(add_mpath, NEW_MPATH);
1598 CMD(update_mesh_config, SET_MESH_CONFIG);
1599 CMD(change_bss, SET_BSS);
1600 CMD(auth, AUTHENTICATE);
1601 CMD(assoc, ASSOCIATE);
1602 CMD(deauth, DEAUTHENTICATE);
1603 CMD(disassoc, DISASSOCIATE);
1604 CMD(join_ibss, JOIN_IBSS);
1605 CMD(join_mesh, JOIN_MESH);
1606 CMD(set_pmksa, SET_PMKSA);
1607 CMD(del_pmksa, DEL_PMKSA);
1608 CMD(flush_pmksa, FLUSH_PMKSA);
1609 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1610 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1611 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1612 CMD(mgmt_tx, FRAME);
1613 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1614 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1615 i++;
1616 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1617 goto nla_put_failure;
1618 }
1619 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1620 rdev->ops->join_mesh) {
1621 i++;
1622 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1623 goto nla_put_failure;
1624 }
1625 CMD(set_wds_peer, SET_WDS_PEER);
1626 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1627 CMD(tdls_mgmt, TDLS_MGMT);
1628 CMD(tdls_oper, TDLS_OPER);
1629 }
1630 if (rdev->wiphy.max_sched_scan_reqs)
1631 CMD(sched_scan_start, START_SCHED_SCAN);
1632 CMD(probe_client, PROBE_CLIENT);
1633 CMD(set_noack_map, SET_NOACK_MAP);
1634 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1635 i++;
1636 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1637 goto nla_put_failure;
1638 }
1639 CMD(start_p2p_device, START_P2P_DEVICE);
1640 CMD(set_mcast_rate, SET_MCAST_RATE);
1641 #ifdef CONFIG_NL80211_TESTMODE
1642 CMD(testmode_cmd, TESTMODE);
1643 #endif
1644
1645 if (rdev->ops->connect || rdev->ops->auth) {
1646 i++;
1647 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1648 goto nla_put_failure;
1649 }
1650
1651 if (rdev->ops->disconnect || rdev->ops->deauth) {
1652 i++;
1653 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1654 goto nla_put_failure;
1655 }
1656
1657 return i;
1658 nla_put_failure:
1659 return -ENOBUFS;
1660 }
1661
1662 static int
1663 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1664 struct sk_buff *msg)
1665 {
1666 struct nlattr *ftm;
1667
1668 if (!cap->ftm.supported)
1669 return 0;
1670
1671 ftm = nla_nest_start(msg, NL80211_PMSR_TYPE_FTM);
1672 if (!ftm)
1673 return -ENOBUFS;
1674
1675 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1676 return -ENOBUFS;
1677 if (cap->ftm.non_asap &&
1678 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1679 return -ENOBUFS;
1680 if (cap->ftm.request_lci &&
1681 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1682 return -ENOBUFS;
1683 if (cap->ftm.request_civicloc &&
1684 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1685 return -ENOBUFS;
1686 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1687 cap->ftm.preambles))
1688 return -ENOBUFS;
1689 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1690 cap->ftm.bandwidths))
1691 return -ENOBUFS;
1692 if (cap->ftm.max_bursts_exponent >= 0 &&
1693 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1694 cap->ftm.max_bursts_exponent))
1695 return -ENOBUFS;
1696 if (cap->ftm.max_ftms_per_burst &&
1697 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1698 cap->ftm.max_ftms_per_burst))
1699 return -ENOBUFS;
1700
1701 nla_nest_end(msg, ftm);
1702 return 0;
1703 }
1704
1705 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1706 struct sk_buff *msg)
1707 {
1708 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1709 struct nlattr *pmsr, *caps;
1710
1711 if (!cap)
1712 return 0;
1713
1714 /*
1715 * we don't need to clean up anything here since the caller
1716 * will genlmsg_cancel() if we fail
1717 */
1718
1719 pmsr = nla_nest_start(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1720 if (!pmsr)
1721 return -ENOBUFS;
1722
1723 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1724 return -ENOBUFS;
1725
1726 if (cap->report_ap_tsf &&
1727 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1728 return -ENOBUFS;
1729
1730 if (cap->randomize_mac_addr &&
1731 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1732 return -ENOBUFS;
1733
1734 caps = nla_nest_start(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1735 if (!caps)
1736 return -ENOBUFS;
1737
1738 if (nl80211_send_pmsr_ftm_capa(cap, msg))
1739 return -ENOBUFS;
1740
1741 nla_nest_end(msg, caps);
1742 nla_nest_end(msg, pmsr);
1743
1744 return 0;
1745 }
1746
1747 struct nl80211_dump_wiphy_state {
1748 s64 filter_wiphy;
1749 long start;
1750 long split_start, band_start, chan_start, capa_start;
1751 bool split;
1752 };
1753
1754 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1755 enum nl80211_commands cmd,
1756 struct sk_buff *msg, u32 portid, u32 seq,
1757 int flags, struct nl80211_dump_wiphy_state *state)
1758 {
1759 void *hdr;
1760 struct nlattr *nl_bands, *nl_band;
1761 struct nlattr *nl_freqs, *nl_freq;
1762 struct nlattr *nl_cmds;
1763 enum nl80211_band band;
1764 struct ieee80211_channel *chan;
1765 int i;
1766 const struct ieee80211_txrx_stypes *mgmt_stypes =
1767 rdev->wiphy.mgmt_stypes;
1768 u32 features;
1769
1770 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1771 if (!hdr)
1772 return -ENOBUFS;
1773
1774 if (WARN_ON(!state))
1775 return -EINVAL;
1776
1777 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1778 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1779 wiphy_name(&rdev->wiphy)) ||
1780 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1781 cfg80211_rdev_list_generation))
1782 goto nla_put_failure;
1783
1784 if (cmd != NL80211_CMD_NEW_WIPHY)
1785 goto finish;
1786
1787 switch (state->split_start) {
1788 case 0:
1789 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1790 rdev->wiphy.retry_short) ||
1791 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1792 rdev->wiphy.retry_long) ||
1793 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1794 rdev->wiphy.frag_threshold) ||
1795 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1796 rdev->wiphy.rts_threshold) ||
1797 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1798 rdev->wiphy.coverage_class) ||
1799 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1800 rdev->wiphy.max_scan_ssids) ||
1801 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1802 rdev->wiphy.max_sched_scan_ssids) ||
1803 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1804 rdev->wiphy.max_scan_ie_len) ||
1805 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1806 rdev->wiphy.max_sched_scan_ie_len) ||
1807 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1808 rdev->wiphy.max_match_sets) ||
1809 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1810 rdev->wiphy.max_sched_scan_plans) ||
1811 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1812 rdev->wiphy.max_sched_scan_plan_interval) ||
1813 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1814 rdev->wiphy.max_sched_scan_plan_iterations))
1815 goto nla_put_failure;
1816
1817 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1818 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1819 goto nla_put_failure;
1820 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1821 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1822 goto nla_put_failure;
1823 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1824 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1825 goto nla_put_failure;
1826 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1827 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1828 goto nla_put_failure;
1829 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1830 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1831 goto nla_put_failure;
1832 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1833 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1834 goto nla_put_failure;
1835 state->split_start++;
1836 if (state->split)
1837 break;
1838 /* fall through */
1839 case 1:
1840 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1841 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1842 rdev->wiphy.cipher_suites))
1843 goto nla_put_failure;
1844
1845 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1846 rdev->wiphy.max_num_pmkids))
1847 goto nla_put_failure;
1848
1849 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1850 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1851 goto nla_put_failure;
1852
1853 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1854 rdev->wiphy.available_antennas_tx) ||
1855 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1856 rdev->wiphy.available_antennas_rx))
1857 goto nla_put_failure;
1858
1859 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1860 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1861 rdev->wiphy.probe_resp_offload))
1862 goto nla_put_failure;
1863
1864 if ((rdev->wiphy.available_antennas_tx ||
1865 rdev->wiphy.available_antennas_rx) &&
1866 rdev->ops->get_antenna) {
1867 u32 tx_ant = 0, rx_ant = 0;
1868 int res;
1869
1870 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1871 if (!res) {
1872 if (nla_put_u32(msg,
1873 NL80211_ATTR_WIPHY_ANTENNA_TX,
1874 tx_ant) ||
1875 nla_put_u32(msg,
1876 NL80211_ATTR_WIPHY_ANTENNA_RX,
1877 rx_ant))
1878 goto nla_put_failure;
1879 }
1880 }
1881
1882 state->split_start++;
1883 if (state->split)
1884 break;
1885 /* fall through */
1886 case 2:
1887 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1888 rdev->wiphy.interface_modes))
1889 goto nla_put_failure;
1890 state->split_start++;
1891 if (state->split)
1892 break;
1893 /* fall through */
1894 case 3:
1895 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1896 if (!nl_bands)
1897 goto nla_put_failure;
1898
1899 for (band = state->band_start;
1900 band < NUM_NL80211_BANDS; band++) {
1901 struct ieee80211_supported_band *sband;
1902
1903 sband = rdev->wiphy.bands[band];
1904
1905 if (!sband)
1906 continue;
1907
1908 nl_band = nla_nest_start(msg, band);
1909 if (!nl_band)
1910 goto nla_put_failure;
1911
1912 switch (state->chan_start) {
1913 case 0:
1914 if (nl80211_send_band_rateinfo(msg, sband))
1915 goto nla_put_failure;
1916 state->chan_start++;
1917 if (state->split)
1918 break;
1919 /* fall through */
1920 default:
1921 /* add frequencies */
1922 nl_freqs = nla_nest_start(
1923 msg, NL80211_BAND_ATTR_FREQS);
1924 if (!nl_freqs)
1925 goto nla_put_failure;
1926
1927 for (i = state->chan_start - 1;
1928 i < sband->n_channels;
1929 i++) {
1930 nl_freq = nla_nest_start(msg, i);
1931 if (!nl_freq)
1932 goto nla_put_failure;
1933
1934 chan = &sband->channels[i];
1935
1936 if (nl80211_msg_put_channel(
1937 msg, &rdev->wiphy, chan,
1938 state->split))
1939 goto nla_put_failure;
1940
1941 nla_nest_end(msg, nl_freq);
1942 if (state->split)
1943 break;
1944 }
1945 if (i < sband->n_channels)
1946 state->chan_start = i + 2;
1947 else
1948 state->chan_start = 0;
1949 nla_nest_end(msg, nl_freqs);
1950 }
1951
1952 nla_nest_end(msg, nl_band);
1953
1954 if (state->split) {
1955 /* start again here */
1956 if (state->chan_start)
1957 band--;
1958 break;
1959 }
1960 }
1961 nla_nest_end(msg, nl_bands);
1962
1963 if (band < NUM_NL80211_BANDS)
1964 state->band_start = band + 1;
1965 else
1966 state->band_start = 0;
1967
1968 /* if bands & channels are done, continue outside */
1969 if (state->band_start == 0 && state->chan_start == 0)
1970 state->split_start++;
1971 if (state->split)
1972 break;
1973 /* fall through */
1974 case 4:
1975 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1976 if (!nl_cmds)
1977 goto nla_put_failure;
1978
1979 i = nl80211_add_commands_unsplit(rdev, msg);
1980 if (i < 0)
1981 goto nla_put_failure;
1982 if (state->split) {
1983 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1984 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1985 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1986 CMD(channel_switch, CHANNEL_SWITCH);
1987 CMD(set_qos_map, SET_QOS_MAP);
1988 if (rdev->wiphy.features &
1989 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1990 CMD(add_tx_ts, ADD_TX_TS);
1991 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1992 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1993 }
1994 #undef CMD
1995
1996 nla_nest_end(msg, nl_cmds);
1997 state->split_start++;
1998 if (state->split)
1999 break;
2000 /* fall through */
2001 case 5:
2002 if (rdev->ops->remain_on_channel &&
2003 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2004 nla_put_u32(msg,
2005 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2006 rdev->wiphy.max_remain_on_channel_duration))
2007 goto nla_put_failure;
2008
2009 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2010 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2011 goto nla_put_failure;
2012
2013 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2014 goto nla_put_failure;
2015 state->split_start++;
2016 if (state->split)
2017 break;
2018 /* fall through */
2019 case 6:
2020 #ifdef CONFIG_PM
2021 if (nl80211_send_wowlan(msg, rdev, state->split))
2022 goto nla_put_failure;
2023 state->split_start++;
2024 if (state->split)
2025 break;
2026 #else
2027 state->split_start++;
2028 #endif
2029 /* fall through */
2030 case 7:
2031 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2032 rdev->wiphy.software_iftypes))
2033 goto nla_put_failure;
2034
2035 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2036 state->split))
2037 goto nla_put_failure;
2038
2039 state->split_start++;
2040 if (state->split)
2041 break;
2042 /* fall through */
2043 case 8:
2044 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2045 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2046 rdev->wiphy.ap_sme_capa))
2047 goto nla_put_failure;
2048
2049 features = rdev->wiphy.features;
2050 /*
2051 * We can only add the per-channel limit information if the
2052 * dump is split, otherwise it makes it too big. Therefore
2053 * only advertise it in that case.
2054 */
2055 if (state->split)
2056 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2057 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2058 goto nla_put_failure;
2059
2060 if (rdev->wiphy.ht_capa_mod_mask &&
2061 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2062 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2063 rdev->wiphy.ht_capa_mod_mask))
2064 goto nla_put_failure;
2065
2066 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2067 rdev->wiphy.max_acl_mac_addrs &&
2068 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2069 rdev->wiphy.max_acl_mac_addrs))
2070 goto nla_put_failure;
2071
2072 /*
2073 * Any information below this point is only available to
2074 * applications that can deal with it being split. This
2075 * helps ensure that newly added capabilities don't break
2076 * older tools by overrunning their buffers.
2077 *
2078 * We still increment split_start so that in the split
2079 * case we'll continue with more data in the next round,
2080 * but break unconditionally so unsplit data stops here.
2081 */
2082 state->split_start++;
2083 break;
2084 case 9:
2085 if (rdev->wiphy.extended_capabilities &&
2086 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2087 rdev->wiphy.extended_capabilities_len,
2088 rdev->wiphy.extended_capabilities) ||
2089 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2090 rdev->wiphy.extended_capabilities_len,
2091 rdev->wiphy.extended_capabilities_mask)))
2092 goto nla_put_failure;
2093
2094 if (rdev->wiphy.vht_capa_mod_mask &&
2095 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2096 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2097 rdev->wiphy.vht_capa_mod_mask))
2098 goto nla_put_failure;
2099
2100 state->split_start++;
2101 break;
2102 case 10:
2103 if (nl80211_send_coalesce(msg, rdev))
2104 goto nla_put_failure;
2105
2106 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2107 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2108 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2109 goto nla_put_failure;
2110
2111 if (rdev->wiphy.max_ap_assoc_sta &&
2112 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2113 rdev->wiphy.max_ap_assoc_sta))
2114 goto nla_put_failure;
2115
2116 state->split_start++;
2117 break;
2118 case 11:
2119 if (rdev->wiphy.n_vendor_commands) {
2120 const struct nl80211_vendor_cmd_info *info;
2121 struct nlattr *nested;
2122
2123 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
2124 if (!nested)
2125 goto nla_put_failure;
2126
2127 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2128 info = &rdev->wiphy.vendor_commands[i].info;
2129 if (nla_put(msg, i + 1, sizeof(*info), info))
2130 goto nla_put_failure;
2131 }
2132 nla_nest_end(msg, nested);
2133 }
2134
2135 if (rdev->wiphy.n_vendor_events) {
2136 const struct nl80211_vendor_cmd_info *info;
2137 struct nlattr *nested;
2138
2139 nested = nla_nest_start(msg,
2140 NL80211_ATTR_VENDOR_EVENTS);
2141 if (!nested)
2142 goto nla_put_failure;
2143
2144 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2145 info = &rdev->wiphy.vendor_events[i];
2146 if (nla_put(msg, i + 1, sizeof(*info), info))
2147 goto nla_put_failure;
2148 }
2149 nla_nest_end(msg, nested);
2150 }
2151 state->split_start++;
2152 break;
2153 case 12:
2154 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2155 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2156 rdev->wiphy.max_num_csa_counters))
2157 goto nla_put_failure;
2158
2159 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2160 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2161 goto nla_put_failure;
2162
2163 if (rdev->wiphy.max_sched_scan_reqs &&
2164 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2165 rdev->wiphy.max_sched_scan_reqs))
2166 goto nla_put_failure;
2167
2168 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2169 sizeof(rdev->wiphy.ext_features),
2170 rdev->wiphy.ext_features))
2171 goto nla_put_failure;
2172
2173 if (rdev->wiphy.bss_select_support) {
2174 struct nlattr *nested;
2175 u32 bss_select_support = rdev->wiphy.bss_select_support;
2176
2177 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
2178 if (!nested)
2179 goto nla_put_failure;
2180
2181 i = 0;
2182 while (bss_select_support) {
2183 if ((bss_select_support & 1) &&
2184 nla_put_flag(msg, i))
2185 goto nla_put_failure;
2186 i++;
2187 bss_select_support >>= 1;
2188 }
2189 nla_nest_end(msg, nested);
2190 }
2191
2192 state->split_start++;
2193 break;
2194 case 13:
2195 if (rdev->wiphy.num_iftype_ext_capab &&
2196 rdev->wiphy.iftype_ext_capab) {
2197 struct nlattr *nested_ext_capab, *nested;
2198
2199 nested = nla_nest_start(msg,
2200 NL80211_ATTR_IFTYPE_EXT_CAPA);
2201 if (!nested)
2202 goto nla_put_failure;
2203
2204 for (i = state->capa_start;
2205 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2206 const struct wiphy_iftype_ext_capab *capab;
2207
2208 capab = &rdev->wiphy.iftype_ext_capab[i];
2209
2210 nested_ext_capab = nla_nest_start(msg, i);
2211 if (!nested_ext_capab ||
2212 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2213 capab->iftype) ||
2214 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2215 capab->extended_capabilities_len,
2216 capab->extended_capabilities) ||
2217 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2218 capab->extended_capabilities_len,
2219 capab->extended_capabilities_mask))
2220 goto nla_put_failure;
2221
2222 nla_nest_end(msg, nested_ext_capab);
2223 if (state->split)
2224 break;
2225 }
2226 nla_nest_end(msg, nested);
2227 if (i < rdev->wiphy.num_iftype_ext_capab) {
2228 state->capa_start = i + 1;
2229 break;
2230 }
2231 }
2232
2233 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2234 rdev->wiphy.nan_supported_bands))
2235 goto nla_put_failure;
2236
2237 if (wiphy_ext_feature_isset(&rdev->wiphy,
2238 NL80211_EXT_FEATURE_TXQS)) {
2239 struct cfg80211_txq_stats txqstats = {};
2240 int res;
2241
2242 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2243 if (!res &&
2244 !nl80211_put_txq_stats(msg, &txqstats,
2245 NL80211_ATTR_TXQ_STATS))
2246 goto nla_put_failure;
2247
2248 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2249 rdev->wiphy.txq_limit))
2250 goto nla_put_failure;
2251 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2252 rdev->wiphy.txq_memory_limit))
2253 goto nla_put_failure;
2254 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2255 rdev->wiphy.txq_quantum))
2256 goto nla_put_failure;
2257 }
2258
2259 state->split_start++;
2260 break;
2261 case 14:
2262 if (nl80211_send_pmsr_capa(rdev, msg))
2263 goto nla_put_failure;
2264
2265 state->split_start++;
2266 break;
2267 case 15:
2268 if (rdev->wiphy.akm_suites &&
2269 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2270 sizeof(u32) * rdev->wiphy.n_akm_suites,
2271 rdev->wiphy.akm_suites))
2272 goto nla_put_failure;
2273
2274 /* done */
2275 state->split_start = 0;
2276 break;
2277 }
2278 finish:
2279 genlmsg_end(msg, hdr);
2280 return 0;
2281
2282 nla_put_failure:
2283 genlmsg_cancel(msg, hdr);
2284 return -EMSGSIZE;
2285 }
2286
2287 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2288 struct netlink_callback *cb,
2289 struct nl80211_dump_wiphy_state *state)
2290 {
2291 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2292 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2293 nl80211_fam.maxattr, nl80211_policy, NULL);
2294 /* ignore parse errors for backward compatibility */
2295 if (ret)
2296 return 0;
2297
2298 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2299 if (tb[NL80211_ATTR_WIPHY])
2300 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2301 if (tb[NL80211_ATTR_WDEV])
2302 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2303 if (tb[NL80211_ATTR_IFINDEX]) {
2304 struct net_device *netdev;
2305 struct cfg80211_registered_device *rdev;
2306 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2307
2308 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2309 if (!netdev)
2310 return -ENODEV;
2311 if (netdev->ieee80211_ptr) {
2312 rdev = wiphy_to_rdev(
2313 netdev->ieee80211_ptr->wiphy);
2314 state->filter_wiphy = rdev->wiphy_idx;
2315 }
2316 }
2317
2318 return 0;
2319 }
2320
2321 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2322 {
2323 int idx = 0, ret;
2324 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2325 struct cfg80211_registered_device *rdev;
2326
2327 rtnl_lock();
2328 if (!state) {
2329 state = kzalloc(sizeof(*state), GFP_KERNEL);
2330 if (!state) {
2331 rtnl_unlock();
2332 return -ENOMEM;
2333 }
2334 state->filter_wiphy = -1;
2335 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2336 if (ret) {
2337 kfree(state);
2338 rtnl_unlock();
2339 return ret;
2340 }
2341 cb->args[0] = (long)state;
2342 }
2343
2344 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2345 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2346 continue;
2347 if (++idx <= state->start)
2348 continue;
2349 if (state->filter_wiphy != -1 &&
2350 state->filter_wiphy != rdev->wiphy_idx)
2351 continue;
2352 /* attempt to fit multiple wiphy data chunks into the skb */
2353 do {
2354 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2355 skb,
2356 NETLINK_CB(cb->skb).portid,
2357 cb->nlh->nlmsg_seq,
2358 NLM_F_MULTI, state);
2359 if (ret < 0) {
2360 /*
2361 * If sending the wiphy data didn't fit (ENOBUFS
2362 * or EMSGSIZE returned), this SKB is still
2363 * empty (so it's not too big because another
2364 * wiphy dataset is already in the skb) and
2365 * we've not tried to adjust the dump allocation
2366 * yet ... then adjust the alloc size to be
2367 * bigger, and return 1 but with the empty skb.
2368 * This results in an empty message being RX'ed
2369 * in userspace, but that is ignored.
2370 *
2371 * We can then retry with the larger buffer.
2372 */
2373 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2374 !skb->len && !state->split &&
2375 cb->min_dump_alloc < 4096) {
2376 cb->min_dump_alloc = 4096;
2377 state->split_start = 0;
2378 rtnl_unlock();
2379 return 1;
2380 }
2381 idx--;
2382 break;
2383 }
2384 } while (state->split_start > 0);
2385 break;
2386 }
2387 rtnl_unlock();
2388
2389 state->start = idx;
2390
2391 return skb->len;
2392 }
2393
2394 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2395 {
2396 kfree((void *)cb->args[0]);
2397 return 0;
2398 }
2399
2400 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2401 {
2402 struct sk_buff *msg;
2403 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2404 struct nl80211_dump_wiphy_state state = {};
2405
2406 msg = nlmsg_new(4096, GFP_KERNEL);
2407 if (!msg)
2408 return -ENOMEM;
2409
2410 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2411 info->snd_portid, info->snd_seq, 0,
2412 &state) < 0) {
2413 nlmsg_free(msg);
2414 return -ENOBUFS;
2415 }
2416
2417 return genlmsg_reply(msg, info);
2418 }
2419
2420 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2421 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2422 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2423 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2424 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2425 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2426 };
2427
2428 static int parse_txq_params(struct nlattr *tb[],
2429 struct ieee80211_txq_params *txq_params)
2430 {
2431 u8 ac;
2432
2433 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2434 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2435 !tb[NL80211_TXQ_ATTR_AIFS])
2436 return -EINVAL;
2437
2438 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2439 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2440 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2441 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2442 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2443
2444 if (ac >= NL80211_NUM_ACS)
2445 return -EINVAL;
2446 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2447 return 0;
2448 }
2449
2450 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2451 {
2452 /*
2453 * You can only set the channel explicitly for WDS interfaces,
2454 * all others have their channel managed via their respective
2455 * "establish a connection" command (connect, join, ...)
2456 *
2457 * For AP/GO and mesh mode, the channel can be set with the
2458 * channel userspace API, but is only stored and passed to the
2459 * low-level driver when the AP starts or the mesh is joined.
2460 * This is for backward compatibility, userspace can also give
2461 * the channel in the start-ap or join-mesh commands instead.
2462 *
2463 * Monitors are special as they are normally slaved to
2464 * whatever else is going on, so they have their own special
2465 * operation to set the monitor channel if possible.
2466 */
2467 return !wdev ||
2468 wdev->iftype == NL80211_IFTYPE_AP ||
2469 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2470 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2471 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2472 }
2473
2474 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2475 struct genl_info *info,
2476 struct cfg80211_chan_def *chandef)
2477 {
2478 struct netlink_ext_ack *extack = info->extack;
2479 struct nlattr **attrs = info->attrs;
2480 u32 control_freq;
2481
2482 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2483 return -EINVAL;
2484
2485 control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2486
2487 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2488 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2489 chandef->center_freq1 = control_freq;
2490 chandef->center_freq2 = 0;
2491
2492 /* Primary channel not allowed */
2493 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2494 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2495 "Channel is disabled");
2496 return -EINVAL;
2497 }
2498
2499 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2500 enum nl80211_channel_type chantype;
2501
2502 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2503
2504 switch (chantype) {
2505 case NL80211_CHAN_NO_HT:
2506 case NL80211_CHAN_HT20:
2507 case NL80211_CHAN_HT40PLUS:
2508 case NL80211_CHAN_HT40MINUS:
2509 cfg80211_chandef_create(chandef, chandef->chan,
2510 chantype);
2511 /* user input for center_freq is incorrect */
2512 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2513 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2514 NL_SET_ERR_MSG_ATTR(extack,
2515 attrs[NL80211_ATTR_CENTER_FREQ1],
2516 "bad center frequency 1");
2517 return -EINVAL;
2518 }
2519 /* center_freq2 must be zero */
2520 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2521 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2522 NL_SET_ERR_MSG_ATTR(extack,
2523 attrs[NL80211_ATTR_CENTER_FREQ2],
2524 "center frequency 2 can't be used");
2525 return -EINVAL;
2526 }
2527 break;
2528 default:
2529 NL_SET_ERR_MSG_ATTR(extack,
2530 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2531 "invalid channel type");
2532 return -EINVAL;
2533 }
2534 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2535 chandef->width =
2536 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2537 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2538 chandef->center_freq1 =
2539 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2540 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2541 chandef->center_freq2 =
2542 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2543 }
2544
2545 if (!cfg80211_chandef_valid(chandef)) {
2546 NL_SET_ERR_MSG(extack, "invalid channel definition");
2547 return -EINVAL;
2548 }
2549
2550 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2551 IEEE80211_CHAN_DISABLED)) {
2552 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2553 return -EINVAL;
2554 }
2555
2556 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2557 chandef->width == NL80211_CHAN_WIDTH_10) &&
2558 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2559 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2560 return -EINVAL;
2561 }
2562
2563 return 0;
2564 }
2565
2566 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2567 struct net_device *dev,
2568 struct genl_info *info)
2569 {
2570 struct cfg80211_chan_def chandef;
2571 int result;
2572 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2573 struct wireless_dev *wdev = NULL;
2574
2575 if (dev)
2576 wdev = dev->ieee80211_ptr;
2577 if (!nl80211_can_set_dev_channel(wdev))
2578 return -EOPNOTSUPP;
2579 if (wdev)
2580 iftype = wdev->iftype;
2581
2582 result = nl80211_parse_chandef(rdev, info, &chandef);
2583 if (result)
2584 return result;
2585
2586 switch (iftype) {
2587 case NL80211_IFTYPE_AP:
2588 case NL80211_IFTYPE_P2P_GO:
2589 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2590 iftype)) {
2591 result = -EINVAL;
2592 break;
2593 }
2594 if (wdev->beacon_interval) {
2595 if (!dev || !rdev->ops->set_ap_chanwidth ||
2596 !(rdev->wiphy.features &
2597 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2598 result = -EBUSY;
2599 break;
2600 }
2601
2602 /* Only allow dynamic channel width changes */
2603 if (chandef.chan != wdev->preset_chandef.chan) {
2604 result = -EBUSY;
2605 break;
2606 }
2607 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2608 if (result)
2609 break;
2610 }
2611 wdev->preset_chandef = chandef;
2612 result = 0;
2613 break;
2614 case NL80211_IFTYPE_MESH_POINT:
2615 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2616 break;
2617 case NL80211_IFTYPE_MONITOR:
2618 result = cfg80211_set_monitor_channel(rdev, &chandef);
2619 break;
2620 default:
2621 result = -EINVAL;
2622 }
2623
2624 return result;
2625 }
2626
2627 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2628 {
2629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2630 struct net_device *netdev = info->user_ptr[1];
2631
2632 return __nl80211_set_channel(rdev, netdev, info);
2633 }
2634
2635 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2636 {
2637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2638 struct net_device *dev = info->user_ptr[1];
2639 struct wireless_dev *wdev = dev->ieee80211_ptr;
2640 const u8 *bssid;
2641
2642 if (!info->attrs[NL80211_ATTR_MAC])
2643 return -EINVAL;
2644
2645 if (netif_running(dev))
2646 return -EBUSY;
2647
2648 if (!rdev->ops->set_wds_peer)
2649 return -EOPNOTSUPP;
2650
2651 if (wdev->iftype != NL80211_IFTYPE_WDS)
2652 return -EOPNOTSUPP;
2653
2654 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2655 return rdev_set_wds_peer(rdev, dev, bssid);
2656 }
2657
2658 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2659 {
2660 struct cfg80211_registered_device *rdev;
2661 struct net_device *netdev = NULL;
2662 struct wireless_dev *wdev;
2663 int result = 0, rem_txq_params = 0;
2664 struct nlattr *nl_txq_params;
2665 u32 changed;
2666 u8 retry_short = 0, retry_long = 0;
2667 u32 frag_threshold = 0, rts_threshold = 0;
2668 u8 coverage_class = 0;
2669 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2670
2671 ASSERT_RTNL();
2672
2673 /*
2674 * Try to find the wiphy and netdev. Normally this
2675 * function shouldn't need the netdev, but this is
2676 * done for backward compatibility -- previously
2677 * setting the channel was done per wiphy, but now
2678 * it is per netdev. Previous userland like hostapd
2679 * also passed a netdev to set_wiphy, so that it is
2680 * possible to let that go to the right netdev!
2681 */
2682
2683 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2684 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2685
2686 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2687 if (netdev && netdev->ieee80211_ptr)
2688 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2689 else
2690 netdev = NULL;
2691 }
2692
2693 if (!netdev) {
2694 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2695 info->attrs);
2696 if (IS_ERR(rdev))
2697 return PTR_ERR(rdev);
2698 wdev = NULL;
2699 netdev = NULL;
2700 result = 0;
2701 } else
2702 wdev = netdev->ieee80211_ptr;
2703
2704 /*
2705 * end workaround code, by now the rdev is available
2706 * and locked, and wdev may or may not be NULL.
2707 */
2708
2709 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2710 result = cfg80211_dev_rename(
2711 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2712
2713 if (result)
2714 return result;
2715
2716 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2717 struct ieee80211_txq_params txq_params;
2718 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2719
2720 if (!rdev->ops->set_txq_params)
2721 return -EOPNOTSUPP;
2722
2723 if (!netdev)
2724 return -EINVAL;
2725
2726 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2727 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2728 return -EINVAL;
2729
2730 if (!netif_running(netdev))
2731 return -ENETDOWN;
2732
2733 nla_for_each_nested(nl_txq_params,
2734 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2735 rem_txq_params) {
2736 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2737 nl_txq_params,
2738 txq_params_policy,
2739 info->extack);
2740 if (result)
2741 return result;
2742 result = parse_txq_params(tb, &txq_params);
2743 if (result)
2744 return result;
2745
2746 result = rdev_set_txq_params(rdev, netdev,
2747 &txq_params);
2748 if (result)
2749 return result;
2750 }
2751 }
2752
2753 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2754 result = __nl80211_set_channel(
2755 rdev,
2756 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2757 info);
2758 if (result)
2759 return result;
2760 }
2761
2762 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2763 struct wireless_dev *txp_wdev = wdev;
2764 enum nl80211_tx_power_setting type;
2765 int idx, mbm = 0;
2766
2767 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2768 txp_wdev = NULL;
2769
2770 if (!rdev->ops->set_tx_power)
2771 return -EOPNOTSUPP;
2772
2773 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2774 type = nla_get_u32(info->attrs[idx]);
2775
2776 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2777 (type != NL80211_TX_POWER_AUTOMATIC))
2778 return -EINVAL;
2779
2780 if (type != NL80211_TX_POWER_AUTOMATIC) {
2781 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2782 mbm = nla_get_u32(info->attrs[idx]);
2783 }
2784
2785 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2786 if (result)
2787 return result;
2788 }
2789
2790 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2791 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2792 u32 tx_ant, rx_ant;
2793
2794 if ((!rdev->wiphy.available_antennas_tx &&
2795 !rdev->wiphy.available_antennas_rx) ||
2796 !rdev->ops->set_antenna)
2797 return -EOPNOTSUPP;
2798
2799 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2800 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2801
2802 /* reject antenna configurations which don't match the
2803 * available antenna masks, except for the "all" mask */
2804 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2805 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2806 return -EINVAL;
2807
2808 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2809 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2810
2811 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2812 if (result)
2813 return result;
2814 }
2815
2816 changed = 0;
2817
2818 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2819 retry_short = nla_get_u8(
2820 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2821
2822 changed |= WIPHY_PARAM_RETRY_SHORT;
2823 }
2824
2825 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2826 retry_long = nla_get_u8(
2827 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2828
2829 changed |= WIPHY_PARAM_RETRY_LONG;
2830 }
2831
2832 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2833 frag_threshold = nla_get_u32(
2834 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2835 if (frag_threshold < 256)
2836 return -EINVAL;
2837
2838 if (frag_threshold != (u32) -1) {
2839 /*
2840 * Fragments (apart from the last one) are required to
2841 * have even length. Make the fragmentation code
2842 * simpler by stripping LSB should someone try to use
2843 * odd threshold value.
2844 */
2845 frag_threshold &= ~0x1;
2846 }
2847 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2848 }
2849
2850 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2851 rts_threshold = nla_get_u32(
2852 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2853 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2854 }
2855
2856 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2857 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2858 return -EINVAL;
2859
2860 coverage_class = nla_get_u8(
2861 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2862 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2863 }
2864
2865 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2866 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2867 return -EOPNOTSUPP;
2868
2869 changed |= WIPHY_PARAM_DYN_ACK;
2870 }
2871
2872 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2873 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2874 NL80211_EXT_FEATURE_TXQS))
2875 return -EOPNOTSUPP;
2876 txq_limit = nla_get_u32(
2877 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2878 changed |= WIPHY_PARAM_TXQ_LIMIT;
2879 }
2880
2881 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2882 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2883 NL80211_EXT_FEATURE_TXQS))
2884 return -EOPNOTSUPP;
2885 txq_memory_limit = nla_get_u32(
2886 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2887 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2888 }
2889
2890 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2891 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2892 NL80211_EXT_FEATURE_TXQS))
2893 return -EOPNOTSUPP;
2894 txq_quantum = nla_get_u32(
2895 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2896 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2897 }
2898
2899 if (changed) {
2900 u8 old_retry_short, old_retry_long;
2901 u32 old_frag_threshold, old_rts_threshold;
2902 u8 old_coverage_class;
2903 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2904
2905 if (!rdev->ops->set_wiphy_params)
2906 return -EOPNOTSUPP;
2907
2908 old_retry_short = rdev->wiphy.retry_short;
2909 old_retry_long = rdev->wiphy.retry_long;
2910 old_frag_threshold = rdev->wiphy.frag_threshold;
2911 old_rts_threshold = rdev->wiphy.rts_threshold;
2912 old_coverage_class = rdev->wiphy.coverage_class;
2913 old_txq_limit = rdev->wiphy.txq_limit;
2914 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2915 old_txq_quantum = rdev->wiphy.txq_quantum;
2916
2917 if (changed & WIPHY_PARAM_RETRY_SHORT)
2918 rdev->wiphy.retry_short = retry_short;
2919 if (changed & WIPHY_PARAM_RETRY_LONG)
2920 rdev->wiphy.retry_long = retry_long;
2921 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2922 rdev->wiphy.frag_threshold = frag_threshold;
2923 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2924 rdev->wiphy.rts_threshold = rts_threshold;
2925 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2926 rdev->wiphy.coverage_class = coverage_class;
2927 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2928 rdev->wiphy.txq_limit = txq_limit;
2929 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2930 rdev->wiphy.txq_memory_limit = txq_memory_limit;
2931 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2932 rdev->wiphy.txq_quantum = txq_quantum;
2933
2934 result = rdev_set_wiphy_params(rdev, changed);
2935 if (result) {
2936 rdev->wiphy.retry_short = old_retry_short;
2937 rdev->wiphy.retry_long = old_retry_long;
2938 rdev->wiphy.frag_threshold = old_frag_threshold;
2939 rdev->wiphy.rts_threshold = old_rts_threshold;
2940 rdev->wiphy.coverage_class = old_coverage_class;
2941 rdev->wiphy.txq_limit = old_txq_limit;
2942 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2943 rdev->wiphy.txq_quantum = old_txq_quantum;
2944 return result;
2945 }
2946 }
2947 return 0;
2948 }
2949
2950 static int nl80211_send_chandef(struct sk_buff *msg,
2951 const struct cfg80211_chan_def *chandef)
2952 {
2953 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2954 return -EINVAL;
2955
2956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2957 chandef->chan->center_freq))
2958 return -ENOBUFS;
2959 switch (chandef->width) {
2960 case NL80211_CHAN_WIDTH_20_NOHT:
2961 case NL80211_CHAN_WIDTH_20:
2962 case NL80211_CHAN_WIDTH_40:
2963 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2964 cfg80211_get_chandef_type(chandef)))
2965 return -ENOBUFS;
2966 break;
2967 default:
2968 break;
2969 }
2970 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2971 return -ENOBUFS;
2972 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2973 return -ENOBUFS;
2974 if (chandef->center_freq2 &&
2975 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2976 return -ENOBUFS;
2977 return 0;
2978 }
2979
2980 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2981 struct cfg80211_registered_device *rdev,
2982 struct wireless_dev *wdev,
2983 enum nl80211_commands cmd)
2984 {
2985 struct net_device *dev = wdev->netdev;
2986 void *hdr;
2987
2988 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
2989 cmd != NL80211_CMD_DEL_INTERFACE &&
2990 cmd != NL80211_CMD_SET_INTERFACE);
2991
2992 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2993 if (!hdr)
2994 return -1;
2995
2996 if (dev &&
2997 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2998 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2999 goto nla_put_failure;
3000
3001 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3002 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3003 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3004 NL80211_ATTR_PAD) ||
3005 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3006 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3007 rdev->devlist_generation ^
3008 (cfg80211_rdev_list_generation << 2)) ||
3009 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3010 goto nla_put_failure;
3011
3012 if (rdev->ops->get_channel) {
3013 int ret;
3014 struct cfg80211_chan_def chandef;
3015
3016 ret = rdev_get_channel(rdev, wdev, &chandef);
3017 if (ret == 0) {
3018 if (nl80211_send_chandef(msg, &chandef))
3019 goto nla_put_failure;
3020 }
3021 }
3022
3023 if (rdev->ops->get_tx_power) {
3024 int dbm, ret;
3025
3026 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3027 if (ret == 0 &&
3028 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3029 DBM_TO_MBM(dbm)))
3030 goto nla_put_failure;
3031 }
3032
3033 wdev_lock(wdev);
3034 switch (wdev->iftype) {
3035 case NL80211_IFTYPE_AP:
3036 if (wdev->ssid_len &&
3037 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3038 goto nla_put_failure_locked;
3039 break;
3040 case NL80211_IFTYPE_STATION:
3041 case NL80211_IFTYPE_P2P_CLIENT:
3042 case NL80211_IFTYPE_ADHOC: {
3043 const u8 *ssid_ie;
3044 if (!wdev->current_bss)
3045 break;
3046 rcu_read_lock();
3047 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3048 WLAN_EID_SSID);
3049 if (ssid_ie &&
3050 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3051 goto nla_put_failure_rcu_locked;
3052 rcu_read_unlock();
3053 break;
3054 }
3055 default:
3056 /* nothing */
3057 break;
3058 }
3059 wdev_unlock(wdev);
3060
3061 if (rdev->ops->get_txq_stats) {
3062 struct cfg80211_txq_stats txqstats = {};
3063 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3064
3065 if (ret == 0 &&
3066 !nl80211_put_txq_stats(msg, &txqstats,
3067 NL80211_ATTR_TXQ_STATS))
3068 goto nla_put_failure;
3069 }
3070
3071 genlmsg_end(msg, hdr);
3072 return 0;
3073
3074 nla_put_failure_rcu_locked:
3075 rcu_read_unlock();
3076 nla_put_failure_locked:
3077 wdev_unlock(wdev);
3078 nla_put_failure:
3079 genlmsg_cancel(msg, hdr);
3080 return -EMSGSIZE;
3081 }
3082
3083 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3084 {
3085 int wp_idx = 0;
3086 int if_idx = 0;
3087 int wp_start = cb->args[0];
3088 int if_start = cb->args[1];
3089 int filter_wiphy = -1;
3090 struct cfg80211_registered_device *rdev;
3091 struct wireless_dev *wdev;
3092 int ret;
3093
3094 rtnl_lock();
3095 if (!cb->args[2]) {
3096 struct nl80211_dump_wiphy_state state = {
3097 .filter_wiphy = -1,
3098 };
3099
3100 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3101 if (ret)
3102 goto out_unlock;
3103
3104 filter_wiphy = state.filter_wiphy;
3105
3106 /*
3107 * if filtering, set cb->args[2] to +1 since 0 is the default
3108 * value needed to determine that parsing is necessary.
3109 */
3110 if (filter_wiphy >= 0)
3111 cb->args[2] = filter_wiphy + 1;
3112 else
3113 cb->args[2] = -1;
3114 } else if (cb->args[2] > 0) {
3115 filter_wiphy = cb->args[2] - 1;
3116 }
3117
3118 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3119 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3120 continue;
3121 if (wp_idx < wp_start) {
3122 wp_idx++;
3123 continue;
3124 }
3125
3126 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3127 continue;
3128
3129 if_idx = 0;
3130
3131 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3132 if (if_idx < if_start) {
3133 if_idx++;
3134 continue;
3135 }
3136 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3137 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3138 rdev, wdev,
3139 NL80211_CMD_NEW_INTERFACE) < 0) {
3140 goto out;
3141 }
3142 if_idx++;
3143 }
3144
3145 wp_idx++;
3146 }
3147 out:
3148 cb->args[0] = wp_idx;
3149 cb->args[1] = if_idx;
3150
3151 ret = skb->len;
3152 out_unlock:
3153 rtnl_unlock();
3154
3155 return ret;
3156 }
3157
3158 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3159 {
3160 struct sk_buff *msg;
3161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3162 struct wireless_dev *wdev = info->user_ptr[1];
3163
3164 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3165 if (!msg)
3166 return -ENOMEM;
3167
3168 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3169 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3170 nlmsg_free(msg);
3171 return -ENOBUFS;
3172 }
3173
3174 return genlmsg_reply(msg, info);
3175 }
3176
3177 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3178 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3179 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3180 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3181 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3182 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3183 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3184 };
3185
3186 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3187 {
3188 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3189 int flag;
3190
3191 *mntrflags = 0;
3192
3193 if (!nla)
3194 return -EINVAL;
3195
3196 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
3197 mntr_flags_policy, NULL))
3198 return -EINVAL;
3199
3200 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3201 if (flags[flag])
3202 *mntrflags |= (1<<flag);
3203
3204 *mntrflags |= MONITOR_FLAG_CHANGED;
3205
3206 return 0;
3207 }
3208
3209 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3210 enum nl80211_iftype type,
3211 struct genl_info *info,
3212 struct vif_params *params)
3213 {
3214 bool change = false;
3215 int err;
3216
3217 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3218 if (type != NL80211_IFTYPE_MONITOR)
3219 return -EINVAL;
3220
3221 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3222 &params->flags);
3223 if (err)
3224 return err;
3225
3226 change = true;
3227 }
3228
3229 if (params->flags & MONITOR_FLAG_ACTIVE &&
3230 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3231 return -EOPNOTSUPP;
3232
3233 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3234 const u8 *mumimo_groups;
3235 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3236
3237 if (type != NL80211_IFTYPE_MONITOR)
3238 return -EINVAL;
3239
3240 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3241 return -EOPNOTSUPP;
3242
3243 mumimo_groups =
3244 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3245
3246 /* bits 0 and 63 are reserved and must be zero */
3247 if ((mumimo_groups[0] & BIT(0)) ||
3248 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3249 return -EINVAL;
3250
3251 params->vht_mumimo_groups = mumimo_groups;
3252 change = true;
3253 }
3254
3255 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3256 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3257
3258 if (type != NL80211_IFTYPE_MONITOR)
3259 return -EINVAL;
3260
3261 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3262 return -EOPNOTSUPP;
3263
3264 params->vht_mumimo_follow_addr =
3265 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3266 change = true;
3267 }
3268
3269 return change ? 1 : 0;
3270 }
3271
3272 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3273 struct net_device *netdev, u8 use_4addr,
3274 enum nl80211_iftype iftype)
3275 {
3276 if (!use_4addr) {
3277 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3278 return -EBUSY;
3279 return 0;
3280 }
3281
3282 switch (iftype) {
3283 case NL80211_IFTYPE_AP_VLAN:
3284 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3285 return 0;
3286 break;
3287 case NL80211_IFTYPE_STATION:
3288 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3289 return 0;
3290 break;
3291 default:
3292 break;
3293 }
3294
3295 return -EOPNOTSUPP;
3296 }
3297
3298 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3299 {
3300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3301 struct vif_params params;
3302 int err;
3303 enum nl80211_iftype otype, ntype;
3304 struct net_device *dev = info->user_ptr[1];
3305 bool change = false;
3306
3307 memset(&params, 0, sizeof(params));
3308
3309 otype = ntype = dev->ieee80211_ptr->iftype;
3310
3311 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3312 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3313 if (otype != ntype)
3314 change = true;
3315 }
3316
3317 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3318 struct wireless_dev *wdev = dev->ieee80211_ptr;
3319
3320 if (ntype != NL80211_IFTYPE_MESH_POINT)
3321 return -EINVAL;
3322 if (netif_running(dev))
3323 return -EBUSY;
3324
3325 wdev_lock(wdev);
3326 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3327 IEEE80211_MAX_MESH_ID_LEN);
3328 wdev->mesh_id_up_len =
3329 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3330 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3331 wdev->mesh_id_up_len);
3332 wdev_unlock(wdev);
3333 }
3334
3335 if (info->attrs[NL80211_ATTR_4ADDR]) {
3336 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3337 change = true;
3338 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3339 if (err)
3340 return err;
3341 } else {
3342 params.use_4addr = -1;
3343 }
3344
3345 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3346 if (err < 0)
3347 return err;
3348 if (err > 0)
3349 change = true;
3350
3351 if (change)
3352 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3353 else
3354 err = 0;
3355
3356 if (!err && params.use_4addr != -1)
3357 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3358
3359 if (change && !err) {
3360 struct wireless_dev *wdev = dev->ieee80211_ptr;
3361
3362 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3363 }
3364
3365 return err;
3366 }
3367
3368 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3369 {
3370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3371 struct vif_params params;
3372 struct wireless_dev *wdev;
3373 struct sk_buff *msg;
3374 int err;
3375 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3376
3377 /* to avoid failing a new interface creation due to pending removal */
3378 cfg80211_destroy_ifaces(rdev);
3379
3380 memset(&params, 0, sizeof(params));
3381
3382 if (!info->attrs[NL80211_ATTR_IFNAME])
3383 return -EINVAL;
3384
3385 if (info->attrs[NL80211_ATTR_IFTYPE])
3386 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3387
3388 if (!rdev->ops->add_virtual_intf ||
3389 !(rdev->wiphy.interface_modes & (1 << type)))
3390 return -EOPNOTSUPP;
3391
3392 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3393 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3394 info->attrs[NL80211_ATTR_MAC]) {
3395 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3396 ETH_ALEN);
3397 if (!is_valid_ether_addr(params.macaddr))
3398 return -EADDRNOTAVAIL;
3399 }
3400
3401 if (info->attrs[NL80211_ATTR_4ADDR]) {
3402 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3403 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3404 if (err)
3405 return err;
3406 }
3407
3408 err = nl80211_parse_mon_options(rdev, type, info, &params);
3409 if (err < 0)
3410 return err;
3411
3412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3413 if (!msg)
3414 return -ENOMEM;
3415
3416 wdev = rdev_add_virtual_intf(rdev,
3417 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3418 NET_NAME_USER, type, &params);
3419 if (WARN_ON(!wdev)) {
3420 nlmsg_free(msg);
3421 return -EPROTO;
3422 } else if (IS_ERR(wdev)) {
3423 nlmsg_free(msg);
3424 return PTR_ERR(wdev);
3425 }
3426
3427 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3428 wdev->owner_nlportid = info->snd_portid;
3429
3430 switch (type) {
3431 case NL80211_IFTYPE_MESH_POINT:
3432 if (!info->attrs[NL80211_ATTR_MESH_ID])
3433 break;
3434 wdev_lock(wdev);
3435 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3436 IEEE80211_MAX_MESH_ID_LEN);
3437 wdev->mesh_id_up_len =
3438 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3439 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3440 wdev->mesh_id_up_len);
3441 wdev_unlock(wdev);
3442 break;
3443 case NL80211_IFTYPE_NAN:
3444 case NL80211_IFTYPE_P2P_DEVICE:
3445 /*
3446 * P2P Device and NAN do not have a netdev, so don't go
3447 * through the netdev notifier and must be added here
3448 */
3449 cfg80211_init_wdev(rdev, wdev);
3450 break;
3451 default:
3452 break;
3453 }
3454
3455 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3456 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3457 nlmsg_free(msg);
3458 return -ENOBUFS;
3459 }
3460
3461 return genlmsg_reply(msg, info);
3462 }
3463
3464 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3465 {
3466 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3467 struct wireless_dev *wdev = info->user_ptr[1];
3468
3469 if (!rdev->ops->del_virtual_intf)
3470 return -EOPNOTSUPP;
3471
3472 /*
3473 * If we remove a wireless device without a netdev then clear
3474 * user_ptr[1] so that nl80211_post_doit won't dereference it
3475 * to check if it needs to do dev_put(). Otherwise it crashes
3476 * since the wdev has been freed, unlike with a netdev where
3477 * we need the dev_put() for the netdev to really be freed.
3478 */
3479 if (!wdev->netdev)
3480 info->user_ptr[1] = NULL;
3481
3482 return rdev_del_virtual_intf(rdev, wdev);
3483 }
3484
3485 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3486 {
3487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3488 struct net_device *dev = info->user_ptr[1];
3489 u16 noack_map;
3490
3491 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3492 return -EINVAL;
3493
3494 if (!rdev->ops->set_noack_map)
3495 return -EOPNOTSUPP;
3496
3497 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3498
3499 return rdev_set_noack_map(rdev, dev, noack_map);
3500 }
3501
3502 struct get_key_cookie {
3503 struct sk_buff *msg;
3504 int error;
3505 int idx;
3506 };
3507
3508 static void get_key_callback(void *c, struct key_params *params)
3509 {
3510 struct nlattr *key;
3511 struct get_key_cookie *cookie = c;
3512
3513 if ((params->key &&
3514 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3515 params->key_len, params->key)) ||
3516 (params->seq &&
3517 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3518 params->seq_len, params->seq)) ||
3519 (params->cipher &&
3520 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3521 params->cipher)))
3522 goto nla_put_failure;
3523
3524 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3525 if (!key)
3526 goto nla_put_failure;
3527
3528 if ((params->key &&
3529 nla_put(cookie->msg, NL80211_KEY_DATA,
3530 params->key_len, params->key)) ||
3531 (params->seq &&
3532 nla_put(cookie->msg, NL80211_KEY_SEQ,
3533 params->seq_len, params->seq)) ||
3534 (params->cipher &&
3535 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3536 params->cipher)))
3537 goto nla_put_failure;
3538
3539 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3540 goto nla_put_failure;
3541
3542 nla_nest_end(cookie->msg, key);
3543
3544 return;
3545 nla_put_failure:
3546 cookie->error = 1;
3547 }
3548
3549 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3550 {
3551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3552 int err;
3553 struct net_device *dev = info->user_ptr[1];
3554 u8 key_idx = 0;
3555 const u8 *mac_addr = NULL;
3556 bool pairwise;
3557 struct get_key_cookie cookie = {
3558 .error = 0,
3559 };
3560 void *hdr;
3561 struct sk_buff *msg;
3562
3563 if (info->attrs[NL80211_ATTR_KEY_IDX])
3564 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3565
3566 if (info->attrs[NL80211_ATTR_MAC])
3567 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3568
3569 pairwise = !!mac_addr;
3570 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3571 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3572
3573 if (kt != NL80211_KEYTYPE_GROUP &&
3574 kt != NL80211_KEYTYPE_PAIRWISE)
3575 return -EINVAL;
3576 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3577 }
3578
3579 if (!rdev->ops->get_key)
3580 return -EOPNOTSUPP;
3581
3582 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3583 return -ENOENT;
3584
3585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3586 if (!msg)
3587 return -ENOMEM;
3588
3589 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3590 NL80211_CMD_NEW_KEY);
3591 if (!hdr)
3592 goto nla_put_failure;
3593
3594 cookie.msg = msg;
3595 cookie.idx = key_idx;
3596
3597 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3598 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3599 goto nla_put_failure;
3600 if (mac_addr &&
3601 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3602 goto nla_put_failure;
3603
3604 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3605 get_key_callback);
3606
3607 if (err)
3608 goto free_msg;
3609
3610 if (cookie.error)
3611 goto nla_put_failure;
3612
3613 genlmsg_end(msg, hdr);
3614 return genlmsg_reply(msg, info);
3615
3616 nla_put_failure:
3617 err = -ENOBUFS;
3618 free_msg:
3619 nlmsg_free(msg);
3620 return err;
3621 }
3622
3623 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3624 {
3625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3626 struct key_parse key;
3627 int err;
3628 struct net_device *dev = info->user_ptr[1];
3629
3630 err = nl80211_parse_key(info, &key);
3631 if (err)
3632 return err;
3633
3634 if (key.idx < 0)
3635 return -EINVAL;
3636
3637 /* only support setting default key */
3638 if (!key.def && !key.defmgmt)
3639 return -EINVAL;
3640
3641 wdev_lock(dev->ieee80211_ptr);
3642
3643 if (key.def) {
3644 if (!rdev->ops->set_default_key) {
3645 err = -EOPNOTSUPP;
3646 goto out;
3647 }
3648
3649 err = nl80211_key_allowed(dev->ieee80211_ptr);
3650 if (err)
3651 goto out;
3652
3653 err = rdev_set_default_key(rdev, dev, key.idx,
3654 key.def_uni, key.def_multi);
3655
3656 if (err)
3657 goto out;
3658
3659 #ifdef CONFIG_CFG80211_WEXT
3660 dev->ieee80211_ptr->wext.default_key = key.idx;
3661 #endif
3662 } else {
3663 if (key.def_uni || !key.def_multi) {
3664 err = -EINVAL;
3665 goto out;
3666 }
3667
3668 if (!rdev->ops->set_default_mgmt_key) {
3669 err = -EOPNOTSUPP;
3670 goto out;
3671 }
3672
3673 err = nl80211_key_allowed(dev->ieee80211_ptr);
3674 if (err)
3675 goto out;
3676
3677 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3678 if (err)
3679 goto out;
3680
3681 #ifdef CONFIG_CFG80211_WEXT
3682 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3683 #endif
3684 }
3685
3686 out:
3687 wdev_unlock(dev->ieee80211_ptr);
3688
3689 return err;
3690 }
3691
3692 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3693 {
3694 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3695 int err;
3696 struct net_device *dev = info->user_ptr[1];
3697 struct key_parse key;
3698 const u8 *mac_addr = NULL;
3699
3700 err = nl80211_parse_key(info, &key);
3701 if (err)
3702 return err;
3703
3704 if (!key.p.key)
3705 return -EINVAL;
3706
3707 if (info->attrs[NL80211_ATTR_MAC])
3708 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3709
3710 if (key.type == -1) {
3711 if (mac_addr)
3712 key.type = NL80211_KEYTYPE_PAIRWISE;
3713 else
3714 key.type = NL80211_KEYTYPE_GROUP;
3715 }
3716
3717 /* for now */
3718 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3719 key.type != NL80211_KEYTYPE_GROUP)
3720 return -EINVAL;
3721
3722 if (!rdev->ops->add_key)
3723 return -EOPNOTSUPP;
3724
3725 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3726 key.type == NL80211_KEYTYPE_PAIRWISE,
3727 mac_addr))
3728 return -EINVAL;
3729
3730 wdev_lock(dev->ieee80211_ptr);
3731 err = nl80211_key_allowed(dev->ieee80211_ptr);
3732 if (!err)
3733 err = rdev_add_key(rdev, dev, key.idx,
3734 key.type == NL80211_KEYTYPE_PAIRWISE,
3735 mac_addr, &key.p);
3736 wdev_unlock(dev->ieee80211_ptr);
3737
3738 return err;
3739 }
3740
3741 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3742 {
3743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3744 int err;
3745 struct net_device *dev = info->user_ptr[1];
3746 u8 *mac_addr = NULL;
3747 struct key_parse key;
3748
3749 err = nl80211_parse_key(info, &key);
3750 if (err)
3751 return err;
3752
3753 if (info->attrs[NL80211_ATTR_MAC])
3754 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3755
3756 if (key.type == -1) {
3757 if (mac_addr)
3758 key.type = NL80211_KEYTYPE_PAIRWISE;
3759 else
3760 key.type = NL80211_KEYTYPE_GROUP;
3761 }
3762
3763 /* for now */
3764 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3765 key.type != NL80211_KEYTYPE_GROUP)
3766 return -EINVAL;
3767
3768 if (!rdev->ops->del_key)
3769 return -EOPNOTSUPP;
3770
3771 wdev_lock(dev->ieee80211_ptr);
3772 err = nl80211_key_allowed(dev->ieee80211_ptr);
3773
3774 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3775 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3776 err = -ENOENT;
3777
3778 if (!err)
3779 err = rdev_del_key(rdev, dev, key.idx,
3780 key.type == NL80211_KEYTYPE_PAIRWISE,
3781 mac_addr);
3782
3783 #ifdef CONFIG_CFG80211_WEXT
3784 if (!err) {
3785 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3786 dev->ieee80211_ptr->wext.default_key = -1;
3787 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3788 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3789 }
3790 #endif
3791 wdev_unlock(dev->ieee80211_ptr);
3792
3793 return err;
3794 }
3795
3796 /* This function returns an error or the number of nested attributes */
3797 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3798 {
3799 struct nlattr *attr;
3800 int n_entries = 0, tmp;
3801
3802 nla_for_each_nested(attr, nl_attr, tmp) {
3803 if (nla_len(attr) != ETH_ALEN)
3804 return -EINVAL;
3805
3806 n_entries++;
3807 }
3808
3809 return n_entries;
3810 }
3811
3812 /*
3813 * This function parses ACL information and allocates memory for ACL data.
3814 * On successful return, the calling function is responsible to free the
3815 * ACL buffer returned by this function.
3816 */
3817 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3818 struct genl_info *info)
3819 {
3820 enum nl80211_acl_policy acl_policy;
3821 struct nlattr *attr;
3822 struct cfg80211_acl_data *acl;
3823 int i = 0, n_entries, tmp;
3824
3825 if (!wiphy->max_acl_mac_addrs)
3826 return ERR_PTR(-EOPNOTSUPP);
3827
3828 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3829 return ERR_PTR(-EINVAL);
3830
3831 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3832 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3833 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3834 return ERR_PTR(-EINVAL);
3835
3836 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3837 return ERR_PTR(-EINVAL);
3838
3839 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3840 if (n_entries < 0)
3841 return ERR_PTR(n_entries);
3842
3843 if (n_entries > wiphy->max_acl_mac_addrs)
3844 return ERR_PTR(-ENOTSUPP);
3845
3846 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3847 GFP_KERNEL);
3848 if (!acl)
3849 return ERR_PTR(-ENOMEM);
3850
3851 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3852 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3853 i++;
3854 }
3855
3856 acl->n_acl_entries = n_entries;
3857 acl->acl_policy = acl_policy;
3858
3859 return acl;
3860 }
3861
3862 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3863 {
3864 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3865 struct net_device *dev = info->user_ptr[1];
3866 struct cfg80211_acl_data *acl;
3867 int err;
3868
3869 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3870 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3871 return -EOPNOTSUPP;
3872
3873 if (!dev->ieee80211_ptr->beacon_interval)
3874 return -EINVAL;
3875
3876 acl = parse_acl_data(&rdev->wiphy, info);
3877 if (IS_ERR(acl))
3878 return PTR_ERR(acl);
3879
3880 err = rdev_set_mac_acl(rdev, dev, acl);
3881
3882 kfree(acl);
3883
3884 return err;
3885 }
3886
3887 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3888 u8 *rates, u8 rates_len)
3889 {
3890 u8 i;
3891 u32 mask = 0;
3892
3893 for (i = 0; i < rates_len; i++) {
3894 int rate = (rates[i] & 0x7f) * 5;
3895 int ridx;
3896
3897 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3898 struct ieee80211_rate *srate =
3899 &sband->bitrates[ridx];
3900 if (rate == srate->bitrate) {
3901 mask |= 1 << ridx;
3902 break;
3903 }
3904 }
3905 if (ridx == sband->n_bitrates)
3906 return 0; /* rate not found */
3907 }
3908
3909 return mask;
3910 }
3911
3912 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3913 u8 *rates, u8 rates_len,
3914 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3915 {
3916 u8 i;
3917
3918 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3919
3920 for (i = 0; i < rates_len; i++) {
3921 int ridx, rbit;
3922
3923 ridx = rates[i] / 8;
3924 rbit = BIT(rates[i] % 8);
3925
3926 /* check validity */
3927 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3928 return false;
3929
3930 /* check availability */
3931 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3932 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3933 mcs[ridx] |= rbit;
3934 else
3935 return false;
3936 }
3937
3938 return true;
3939 }
3940
3941 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3942 {
3943 u16 mcs_mask = 0;
3944
3945 switch (vht_mcs_map) {
3946 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3947 break;
3948 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3949 mcs_mask = 0x00FF;
3950 break;
3951 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3952 mcs_mask = 0x01FF;
3953 break;
3954 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3955 mcs_mask = 0x03FF;
3956 break;
3957 default:
3958 break;
3959 }
3960
3961 return mcs_mask;
3962 }
3963
3964 static void vht_build_mcs_mask(u16 vht_mcs_map,
3965 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3966 {
3967 u8 nss;
3968
3969 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3970 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3971 vht_mcs_map >>= 2;
3972 }
3973 }
3974
3975 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3976 struct nl80211_txrate_vht *txrate,
3977 u16 mcs[NL80211_VHT_NSS_MAX])
3978 {
3979 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3980 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3981 u8 i;
3982
3983 if (!sband->vht_cap.vht_supported)
3984 return false;
3985
3986 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3987
3988 /* Build vht_mcs_mask from VHT capabilities */
3989 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3990
3991 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3992 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3993 mcs[i] = txrate->mcs[i];
3994 else
3995 return false;
3996 }
3997
3998 return true;
3999 }
4000
4001 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4002 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4003 .len = NL80211_MAX_SUPP_RATES },
4004 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4005 .len = NL80211_MAX_SUPP_HT_RATES },
4006 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
4007 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4008 };
4009
4010 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4011 struct cfg80211_bitrate_mask *mask)
4012 {
4013 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4015 int rem, i;
4016 struct nlattr *tx_rates;
4017 struct ieee80211_supported_band *sband;
4018 u16 vht_tx_mcs_map;
4019
4020 memset(mask, 0, sizeof(*mask));
4021 /* Default to all rates enabled */
4022 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4023 sband = rdev->wiphy.bands[i];
4024
4025 if (!sband)
4026 continue;
4027
4028 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4029 memcpy(mask->control[i].ht_mcs,
4030 sband->ht_cap.mcs.rx_mask,
4031 sizeof(mask->control[i].ht_mcs));
4032
4033 if (!sband->vht_cap.vht_supported)
4034 continue;
4035
4036 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4037 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4038 }
4039
4040 /* if no rates are given set it back to the defaults */
4041 if (!info->attrs[NL80211_ATTR_TX_RATES])
4042 goto out;
4043
4044 /* The nested attribute uses enum nl80211_band as the index. This maps
4045 * directly to the enum nl80211_band values used in cfg80211.
4046 */
4047 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4048 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4049 enum nl80211_band band = nla_type(tx_rates);
4050 int err;
4051
4052 if (band < 0 || band >= NUM_NL80211_BANDS)
4053 return -EINVAL;
4054 sband = rdev->wiphy.bands[band];
4055 if (sband == NULL)
4056 return -EINVAL;
4057 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
4058 nl80211_txattr_policy, info->extack);
4059 if (err)
4060 return err;
4061 if (tb[NL80211_TXRATE_LEGACY]) {
4062 mask->control[band].legacy = rateset_to_mask(
4063 sband,
4064 nla_data(tb[NL80211_TXRATE_LEGACY]),
4065 nla_len(tb[NL80211_TXRATE_LEGACY]));
4066 if ((mask->control[band].legacy == 0) &&
4067 nla_len(tb[NL80211_TXRATE_LEGACY]))
4068 return -EINVAL;
4069 }
4070 if (tb[NL80211_TXRATE_HT]) {
4071 if (!ht_rateset_to_mask(
4072 sband,
4073 nla_data(tb[NL80211_TXRATE_HT]),
4074 nla_len(tb[NL80211_TXRATE_HT]),
4075 mask->control[band].ht_mcs))
4076 return -EINVAL;
4077 }
4078 if (tb[NL80211_TXRATE_VHT]) {
4079 if (!vht_set_mcs_mask(
4080 sband,
4081 nla_data(tb[NL80211_TXRATE_VHT]),
4082 mask->control[band].vht_mcs))
4083 return -EINVAL;
4084 }
4085 if (tb[NL80211_TXRATE_GI]) {
4086 mask->control[band].gi =
4087 nla_get_u8(tb[NL80211_TXRATE_GI]);
4088 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4089 return -EINVAL;
4090 }
4091
4092 if (mask->control[band].legacy == 0) {
4093 /* don't allow empty legacy rates if HT or VHT
4094 * are not even supported.
4095 */
4096 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4097 rdev->wiphy.bands[band]->vht_cap.vht_supported))
4098 return -EINVAL;
4099
4100 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4101 if (mask->control[band].ht_mcs[i])
4102 goto out;
4103
4104 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4105 if (mask->control[band].vht_mcs[i])
4106 goto out;
4107
4108 /* legacy and mcs rates may not be both empty */
4109 return -EINVAL;
4110 }
4111 }
4112
4113 out:
4114 return 0;
4115 }
4116
4117 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4118 enum nl80211_band band,
4119 struct cfg80211_bitrate_mask *beacon_rate)
4120 {
4121 u32 count_ht, count_vht, i;
4122 u32 rate = beacon_rate->control[band].legacy;
4123
4124 /* Allow only one rate */
4125 if (hweight32(rate) > 1)
4126 return -EINVAL;
4127
4128 count_ht = 0;
4129 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4130 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4131 return -EINVAL;
4132 } else if (beacon_rate->control[band].ht_mcs[i]) {
4133 count_ht++;
4134 if (count_ht > 1)
4135 return -EINVAL;
4136 }
4137 if (count_ht && rate)
4138 return -EINVAL;
4139 }
4140
4141 count_vht = 0;
4142 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4143 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4144 return -EINVAL;
4145 } else if (beacon_rate->control[band].vht_mcs[i]) {
4146 count_vht++;
4147 if (count_vht > 1)
4148 return -EINVAL;
4149 }
4150 if (count_vht && rate)
4151 return -EINVAL;
4152 }
4153
4154 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4155 return -EINVAL;
4156
4157 if (rate &&
4158 !wiphy_ext_feature_isset(&rdev->wiphy,
4159 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4160 return -EINVAL;
4161 if (count_ht &&
4162 !wiphy_ext_feature_isset(&rdev->wiphy,
4163 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4164 return -EINVAL;
4165 if (count_vht &&
4166 !wiphy_ext_feature_isset(&rdev->wiphy,
4167 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4168 return -EINVAL;
4169
4170 return 0;
4171 }
4172
4173 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4174 struct nlattr *attrs[],
4175 struct cfg80211_beacon_data *bcn)
4176 {
4177 bool haveinfo = false;
4178 int err;
4179
4180 memset(bcn, 0, sizeof(*bcn));
4181
4182 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4183 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4184 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4185 if (!bcn->head_len)
4186 return -EINVAL;
4187 haveinfo = true;
4188 }
4189
4190 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4191 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4192 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4193 haveinfo = true;
4194 }
4195
4196 if (!haveinfo)
4197 return -EINVAL;
4198
4199 if (attrs[NL80211_ATTR_IE]) {
4200 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4201 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4202 }
4203
4204 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4205 bcn->proberesp_ies =
4206 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4207 bcn->proberesp_ies_len =
4208 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4209 }
4210
4211 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4212 bcn->assocresp_ies =
4213 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4214 bcn->assocresp_ies_len =
4215 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4216 }
4217
4218 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4219 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4220 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4221 }
4222
4223 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4224 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4225
4226 err = nla_parse_nested(tb, NL80211_FTM_RESP_ATTR_MAX,
4227 attrs[NL80211_ATTR_FTM_RESPONDER],
4228 NULL, NULL);
4229 if (err)
4230 return err;
4231
4232 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4233 wiphy_ext_feature_isset(&rdev->wiphy,
4234 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4235 bcn->ftm_responder = 1;
4236 else
4237 return -EOPNOTSUPP;
4238
4239 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4240 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4241 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4242 }
4243
4244 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4245 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4246 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4247 }
4248 } else {
4249 bcn->ftm_responder = -1;
4250 }
4251
4252 return 0;
4253 }
4254
4255 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4256 const u8 *rates)
4257 {
4258 int i;
4259
4260 if (!rates)
4261 return;
4262
4263 for (i = 0; i < rates[1]; i++) {
4264 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4265 params->ht_required = true;
4266 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4267 params->vht_required = true;
4268 }
4269 }
4270
4271 /*
4272 * Since the nl80211 API didn't include, from the beginning, attributes about
4273 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4274 * benefit of drivers that rebuild IEs in the firmware.
4275 */
4276 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4277 {
4278 const struct cfg80211_beacon_data *bcn = &params->beacon;
4279 size_t ies_len = bcn->tail_len;
4280 const u8 *ies = bcn->tail;
4281 const u8 *rates;
4282 const u8 *cap;
4283
4284 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4285 nl80211_check_ap_rate_selectors(params, rates);
4286
4287 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4288 nl80211_check_ap_rate_selectors(params, rates);
4289
4290 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4291 if (cap && cap[1] >= sizeof(*params->ht_cap))
4292 params->ht_cap = (void *)(cap + 2);
4293 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4294 if (cap && cap[1] >= sizeof(*params->vht_cap))
4295 params->vht_cap = (void *)(cap + 2);
4296 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4297 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4298 params->he_cap = (void *)(cap + 3);
4299 }
4300
4301 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4302 struct cfg80211_ap_settings *params)
4303 {
4304 struct wireless_dev *wdev;
4305 bool ret = false;
4306
4307 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4308 if (wdev->iftype != NL80211_IFTYPE_AP &&
4309 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4310 continue;
4311
4312 if (!wdev->preset_chandef.chan)
4313 continue;
4314
4315 params->chandef = wdev->preset_chandef;
4316 ret = true;
4317 break;
4318 }
4319
4320 return ret;
4321 }
4322
4323 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4324 enum nl80211_auth_type auth_type,
4325 enum nl80211_commands cmd)
4326 {
4327 if (auth_type > NL80211_AUTHTYPE_MAX)
4328 return false;
4329
4330 switch (cmd) {
4331 case NL80211_CMD_AUTHENTICATE:
4332 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4333 auth_type == NL80211_AUTHTYPE_SAE)
4334 return false;
4335 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4336 NL80211_EXT_FEATURE_FILS_STA) &&
4337 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4338 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4339 auth_type == NL80211_AUTHTYPE_FILS_PK))
4340 return false;
4341 return true;
4342 case NL80211_CMD_CONNECT:
4343 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4344 auth_type == NL80211_AUTHTYPE_SAE)
4345 return false;
4346
4347 /* FILS with SK PFS or PK not supported yet */
4348 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4349 auth_type == NL80211_AUTHTYPE_FILS_PK)
4350 return false;
4351 if (!wiphy_ext_feature_isset(
4352 &rdev->wiphy,
4353 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4354 auth_type == NL80211_AUTHTYPE_FILS_SK)
4355 return false;
4356 return true;
4357 case NL80211_CMD_START_AP:
4358 /* SAE not supported yet */
4359 if (auth_type == NL80211_AUTHTYPE_SAE)
4360 return false;
4361 /* FILS not supported yet */
4362 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4363 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4364 auth_type == NL80211_AUTHTYPE_FILS_PK)
4365 return false;
4366 return true;
4367 default:
4368 return false;
4369 }
4370 }
4371
4372 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4373 {
4374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4375 struct net_device *dev = info->user_ptr[1];
4376 struct wireless_dev *wdev = dev->ieee80211_ptr;
4377 struct cfg80211_ap_settings params;
4378 int err;
4379
4380 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4381 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4382 return -EOPNOTSUPP;
4383
4384 if (!rdev->ops->start_ap)
4385 return -EOPNOTSUPP;
4386
4387 if (wdev->beacon_interval)
4388 return -EALREADY;
4389
4390 memset(&params, 0, sizeof(params));
4391
4392 /* these are required for START_AP */
4393 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4394 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4395 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4396 return -EINVAL;
4397
4398 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4399 if (err)
4400 return err;
4401
4402 params.beacon_interval =
4403 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4404 params.dtim_period =
4405 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4406
4407 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4408 params.beacon_interval);
4409 if (err)
4410 return err;
4411
4412 /*
4413 * In theory, some of these attributes should be required here
4414 * but since they were not used when the command was originally
4415 * added, keep them optional for old user space programs to let
4416 * them continue to work with drivers that do not need the
4417 * additional information -- drivers must check!
4418 */
4419 if (info->attrs[NL80211_ATTR_SSID]) {
4420 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4421 params.ssid_len =
4422 nla_len(info->attrs[NL80211_ATTR_SSID]);
4423 if (params.ssid_len == 0 ||
4424 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4425 return -EINVAL;
4426 }
4427
4428 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4429 params.hidden_ssid = nla_get_u32(
4430 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4431
4432 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4433
4434 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4435 params.auth_type = nla_get_u32(
4436 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4437 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4438 NL80211_CMD_START_AP))
4439 return -EINVAL;
4440 } else
4441 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4442
4443 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4444 NL80211_MAX_NR_CIPHER_SUITES);
4445 if (err)
4446 return err;
4447
4448 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4449 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4450 return -EOPNOTSUPP;
4451 params.inactivity_timeout = nla_get_u16(
4452 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4453 }
4454
4455 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4456 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4457 return -EINVAL;
4458 params.p2p_ctwindow =
4459 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4460 if (params.p2p_ctwindow != 0 &&
4461 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4462 return -EINVAL;
4463 }
4464
4465 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4466 u8 tmp;
4467
4468 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4469 return -EINVAL;
4470 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4471 params.p2p_opp_ps = tmp;
4472 if (params.p2p_opp_ps != 0 &&
4473 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4474 return -EINVAL;
4475 }
4476
4477 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4478 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4479 if (err)
4480 return err;
4481 } else if (wdev->preset_chandef.chan) {
4482 params.chandef = wdev->preset_chandef;
4483 } else if (!nl80211_get_ap_channel(rdev, &params))
4484 return -EINVAL;
4485
4486 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4487 wdev->iftype))
4488 return -EINVAL;
4489
4490 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4491 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4492 if (err)
4493 return err;
4494
4495 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4496 &params.beacon_rate);
4497 if (err)
4498 return err;
4499 }
4500
4501 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4502 params.smps_mode =
4503 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4504 switch (params.smps_mode) {
4505 case NL80211_SMPS_OFF:
4506 break;
4507 case NL80211_SMPS_STATIC:
4508 if (!(rdev->wiphy.features &
4509 NL80211_FEATURE_STATIC_SMPS))
4510 return -EINVAL;
4511 break;
4512 case NL80211_SMPS_DYNAMIC:
4513 if (!(rdev->wiphy.features &
4514 NL80211_FEATURE_DYNAMIC_SMPS))
4515 return -EINVAL;
4516 break;
4517 default:
4518 return -EINVAL;
4519 }
4520 } else {
4521 params.smps_mode = NL80211_SMPS_OFF;
4522 }
4523
4524 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4525 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4526 return -EOPNOTSUPP;
4527
4528 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4529 params.acl = parse_acl_data(&rdev->wiphy, info);
4530 if (IS_ERR(params.acl))
4531 return PTR_ERR(params.acl);
4532 }
4533
4534 nl80211_calculate_ap_params(&params);
4535
4536 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4537 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4538
4539 wdev_lock(wdev);
4540 err = rdev_start_ap(rdev, dev, &params);
4541 if (!err) {
4542 wdev->preset_chandef = params.chandef;
4543 wdev->beacon_interval = params.beacon_interval;
4544 wdev->chandef = params.chandef;
4545 wdev->ssid_len = params.ssid_len;
4546 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4547
4548 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4549 wdev->conn_owner_nlportid = info->snd_portid;
4550 }
4551 wdev_unlock(wdev);
4552
4553 kfree(params.acl);
4554
4555 return err;
4556 }
4557
4558 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4559 {
4560 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4561 struct net_device *dev = info->user_ptr[1];
4562 struct wireless_dev *wdev = dev->ieee80211_ptr;
4563 struct cfg80211_beacon_data params;
4564 int err;
4565
4566 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4568 return -EOPNOTSUPP;
4569
4570 if (!rdev->ops->change_beacon)
4571 return -EOPNOTSUPP;
4572
4573 if (!wdev->beacon_interval)
4574 return -EINVAL;
4575
4576 err = nl80211_parse_beacon(rdev, info->attrs, &params);
4577 if (err)
4578 return err;
4579
4580 wdev_lock(wdev);
4581 err = rdev_change_beacon(rdev, dev, &params);
4582 wdev_unlock(wdev);
4583
4584 return err;
4585 }
4586
4587 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4588 {
4589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4590 struct net_device *dev = info->user_ptr[1];
4591
4592 return cfg80211_stop_ap(rdev, dev, false);
4593 }
4594
4595 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4596 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4597 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4598 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4599 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4600 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4601 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4602 };
4603
4604 static int parse_station_flags(struct genl_info *info,
4605 enum nl80211_iftype iftype,
4606 struct station_parameters *params)
4607 {
4608 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4609 struct nlattr *nla;
4610 int flag;
4611
4612 /*
4613 * Try parsing the new attribute first so userspace
4614 * can specify both for older kernels.
4615 */
4616 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4617 if (nla) {
4618 struct nl80211_sta_flag_update *sta_flags;
4619
4620 sta_flags = nla_data(nla);
4621 params->sta_flags_mask = sta_flags->mask;
4622 params->sta_flags_set = sta_flags->set;
4623 params->sta_flags_set &= params->sta_flags_mask;
4624 if ((params->sta_flags_mask |
4625 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4626 return -EINVAL;
4627 return 0;
4628 }
4629
4630 /* if present, parse the old attribute */
4631
4632 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4633 if (!nla)
4634 return 0;
4635
4636 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4637 sta_flags_policy, info->extack))
4638 return -EINVAL;
4639
4640 /*
4641 * Only allow certain flags for interface types so that
4642 * other attributes are silently ignored. Remember that
4643 * this is backward compatibility code with old userspace
4644 * and shouldn't be hit in other cases anyway.
4645 */
4646 switch (iftype) {
4647 case NL80211_IFTYPE_AP:
4648 case NL80211_IFTYPE_AP_VLAN:
4649 case NL80211_IFTYPE_P2P_GO:
4650 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4651 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4652 BIT(NL80211_STA_FLAG_WME) |
4653 BIT(NL80211_STA_FLAG_MFP);
4654 break;
4655 case NL80211_IFTYPE_P2P_CLIENT:
4656 case NL80211_IFTYPE_STATION:
4657 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4658 BIT(NL80211_STA_FLAG_TDLS_PEER);
4659 break;
4660 case NL80211_IFTYPE_MESH_POINT:
4661 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4662 BIT(NL80211_STA_FLAG_MFP) |
4663 BIT(NL80211_STA_FLAG_AUTHORIZED);
4664 break;
4665 default:
4666 return -EINVAL;
4667 }
4668
4669 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4670 if (flags[flag]) {
4671 params->sta_flags_set |= (1<<flag);
4672
4673 /* no longer support new API additions in old API */
4674 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4675 return -EINVAL;
4676 }
4677 }
4678
4679 return 0;
4680 }
4681
4682 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4683 {
4684 struct nlattr *rate;
4685 u32 bitrate;
4686 u16 bitrate_compat;
4687 enum nl80211_rate_info rate_flg;
4688
4689 rate = nla_nest_start(msg, attr);
4690 if (!rate)
4691 return false;
4692
4693 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4694 bitrate = cfg80211_calculate_bitrate(info);
4695 /* report 16-bit bitrate only if we can */
4696 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4697 if (bitrate > 0 &&
4698 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4699 return false;
4700 if (bitrate_compat > 0 &&
4701 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4702 return false;
4703
4704 switch (info->bw) {
4705 case RATE_INFO_BW_5:
4706 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4707 break;
4708 case RATE_INFO_BW_10:
4709 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4710 break;
4711 default:
4712 WARN_ON(1);
4713 /* fall through */
4714 case RATE_INFO_BW_20:
4715 rate_flg = 0;
4716 break;
4717 case RATE_INFO_BW_40:
4718 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4719 break;
4720 case RATE_INFO_BW_80:
4721 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4722 break;
4723 case RATE_INFO_BW_160:
4724 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4725 break;
4726 case RATE_INFO_BW_HE_RU:
4727 rate_flg = 0;
4728 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4729 }
4730
4731 if (rate_flg && nla_put_flag(msg, rate_flg))
4732 return false;
4733
4734 if (info->flags & RATE_INFO_FLAGS_MCS) {
4735 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4736 return false;
4737 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4738 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4739 return false;
4740 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4741 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4742 return false;
4743 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4744 return false;
4745 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4746 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4747 return false;
4748 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4749 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4750 return false;
4751 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4752 return false;
4753 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4754 return false;
4755 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4756 return false;
4757 if (info->bw == RATE_INFO_BW_HE_RU &&
4758 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4759 info->he_ru_alloc))
4760 return false;
4761 }
4762
4763 nla_nest_end(msg, rate);
4764 return true;
4765 }
4766
4767 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4768 int id)
4769 {
4770 void *attr;
4771 int i = 0;
4772
4773 if (!mask)
4774 return true;
4775
4776 attr = nla_nest_start(msg, id);
4777 if (!attr)
4778 return false;
4779
4780 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4781 if (!(mask & BIT(i)))
4782 continue;
4783
4784 if (nla_put_u8(msg, i, signal[i]))
4785 return false;
4786 }
4787
4788 nla_nest_end(msg, attr);
4789
4790 return true;
4791 }
4792
4793 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4794 u32 seq, int flags,
4795 struct cfg80211_registered_device *rdev,
4796 struct net_device *dev,
4797 const u8 *mac_addr, struct station_info *sinfo)
4798 {
4799 void *hdr;
4800 struct nlattr *sinfoattr, *bss_param;
4801
4802 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4803 if (!hdr)
4804 return -1;
4805
4806 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4807 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4808 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4809 goto nla_put_failure;
4810
4811 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4812 if (!sinfoattr)
4813 goto nla_put_failure;
4814
4815 #define PUT_SINFO(attr, memb, type) do { \
4816 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4817 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
4818 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4819 sinfo->memb)) \
4820 goto nla_put_failure; \
4821 } while (0)
4822 #define PUT_SINFO_U64(attr, memb) do { \
4823 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
4824 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4825 sinfo->memb, NL80211_STA_INFO_PAD)) \
4826 goto nla_put_failure; \
4827 } while (0)
4828
4829 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4830 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4831
4832 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
4833 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
4834 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4835 (u32)sinfo->rx_bytes))
4836 goto nla_put_failure;
4837
4838 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
4839 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
4840 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4841 (u32)sinfo->tx_bytes))
4842 goto nla_put_failure;
4843
4844 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4845 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4846 PUT_SINFO(LLID, llid, u16);
4847 PUT_SINFO(PLID, plid, u16);
4848 PUT_SINFO(PLINK_STATE, plink_state, u8);
4849 PUT_SINFO_U64(RX_DURATION, rx_duration);
4850 PUT_SINFO_U64(TX_DURATION, tx_duration);
4851
4852 if (wiphy_ext_feature_isset(&rdev->wiphy,
4853 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
4854 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
4855
4856 switch (rdev->wiphy.signal_type) {
4857 case CFG80211_SIGNAL_TYPE_MBM:
4858 PUT_SINFO(SIGNAL, signal, u8);
4859 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4860 break;
4861 default:
4862 break;
4863 }
4864 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4865 if (!nl80211_put_signal(msg, sinfo->chains,
4866 sinfo->chain_signal,
4867 NL80211_STA_INFO_CHAIN_SIGNAL))
4868 goto nla_put_failure;
4869 }
4870 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4871 if (!nl80211_put_signal(msg, sinfo->chains,
4872 sinfo->chain_signal_avg,
4873 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4874 goto nla_put_failure;
4875 }
4876 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
4877 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4878 NL80211_STA_INFO_TX_BITRATE))
4879 goto nla_put_failure;
4880 }
4881 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
4882 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4883 NL80211_STA_INFO_RX_BITRATE))
4884 goto nla_put_failure;
4885 }
4886
4887 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4888 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4889 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4890 PUT_SINFO(TX_FAILED, tx_failed, u32);
4891 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4892 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4893 PUT_SINFO(LOCAL_PM, local_pm, u32);
4894 PUT_SINFO(PEER_PM, peer_pm, u32);
4895 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4896 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
4897
4898 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
4899 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4900 if (!bss_param)
4901 goto nla_put_failure;
4902
4903 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4904 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4905 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4906 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4907 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4908 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4909 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4910 sinfo->bss_param.dtim_period) ||
4911 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4912 sinfo->bss_param.beacon_interval))
4913 goto nla_put_failure;
4914
4915 nla_nest_end(msg, bss_param);
4916 }
4917 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
4918 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4919 sizeof(struct nl80211_sta_flag_update),
4920 &sinfo->sta_flags))
4921 goto nla_put_failure;
4922
4923 PUT_SINFO_U64(T_OFFSET, t_offset);
4924 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4925 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4926 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4927 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
4928 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
4929 if (wiphy_ext_feature_isset(&rdev->wiphy,
4930 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
4931 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4932 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
4933 }
4934
4935 #undef PUT_SINFO
4936 #undef PUT_SINFO_U64
4937
4938 if (sinfo->pertid) {
4939 struct nlattr *tidsattr;
4940 int tid;
4941
4942 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4943 if (!tidsattr)
4944 goto nla_put_failure;
4945
4946 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4947 struct cfg80211_tid_stats *tidstats;
4948 struct nlattr *tidattr;
4949
4950 tidstats = &sinfo->pertid[tid];
4951
4952 if (!tidstats->filled)
4953 continue;
4954
4955 tidattr = nla_nest_start(msg, tid + 1);
4956 if (!tidattr)
4957 goto nla_put_failure;
4958
4959 #define PUT_TIDVAL_U64(attr, memb) do { \
4960 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4961 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4962 tidstats->memb, NL80211_TID_STATS_PAD)) \
4963 goto nla_put_failure; \
4964 } while (0)
4965
4966 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4967 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4968 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4969 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4970
4971 #undef PUT_TIDVAL_U64
4972 if ((tidstats->filled &
4973 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4974 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4975 NL80211_TID_STATS_TXQ_STATS))
4976 goto nla_put_failure;
4977
4978 nla_nest_end(msg, tidattr);
4979 }
4980
4981 nla_nest_end(msg, tidsattr);
4982 }
4983
4984 nla_nest_end(msg, sinfoattr);
4985
4986 if (sinfo->assoc_req_ies_len &&
4987 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4988 sinfo->assoc_req_ies))
4989 goto nla_put_failure;
4990
4991 cfg80211_sinfo_release_content(sinfo);
4992 genlmsg_end(msg, hdr);
4993 return 0;
4994
4995 nla_put_failure:
4996 cfg80211_sinfo_release_content(sinfo);
4997 genlmsg_cancel(msg, hdr);
4998 return -EMSGSIZE;
4999 }
5000
5001 static int nl80211_dump_station(struct sk_buff *skb,
5002 struct netlink_callback *cb)
5003 {
5004 struct station_info sinfo;
5005 struct cfg80211_registered_device *rdev;
5006 struct wireless_dev *wdev;
5007 u8 mac_addr[ETH_ALEN];
5008 int sta_idx = cb->args[2];
5009 int err;
5010
5011 rtnl_lock();
5012 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5013 if (err)
5014 goto out_err;
5015
5016 if (!wdev->netdev) {
5017 err = -EINVAL;
5018 goto out_err;
5019 }
5020
5021 if (!rdev->ops->dump_station) {
5022 err = -EOPNOTSUPP;
5023 goto out_err;
5024 }
5025
5026 while (1) {
5027 memset(&sinfo, 0, sizeof(sinfo));
5028 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5029 mac_addr, &sinfo);
5030 if (err == -ENOENT)
5031 break;
5032 if (err)
5033 goto out_err;
5034
5035 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5036 NETLINK_CB(cb->skb).portid,
5037 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5038 rdev, wdev->netdev, mac_addr,
5039 &sinfo) < 0)
5040 goto out;
5041
5042 sta_idx++;
5043 }
5044
5045 out:
5046 cb->args[2] = sta_idx;
5047 err = skb->len;
5048 out_err:
5049 rtnl_unlock();
5050
5051 return err;
5052 }
5053
5054 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5055 {
5056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5057 struct net_device *dev = info->user_ptr[1];
5058 struct station_info sinfo;
5059 struct sk_buff *msg;
5060 u8 *mac_addr = NULL;
5061 int err;
5062
5063 memset(&sinfo, 0, sizeof(sinfo));
5064
5065 if (!info->attrs[NL80211_ATTR_MAC])
5066 return -EINVAL;
5067
5068 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5069
5070 if (!rdev->ops->get_station)
5071 return -EOPNOTSUPP;
5072
5073 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5074 if (err)
5075 return err;
5076
5077 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5078 if (!msg) {
5079 cfg80211_sinfo_release_content(&sinfo);
5080 return -ENOMEM;
5081 }
5082
5083 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5084 info->snd_portid, info->snd_seq, 0,
5085 rdev, dev, mac_addr, &sinfo) < 0) {
5086 nlmsg_free(msg);
5087 return -ENOBUFS;
5088 }
5089
5090 return genlmsg_reply(msg, info);
5091 }
5092
5093 int cfg80211_check_station_change(struct wiphy *wiphy,
5094 struct station_parameters *params,
5095 enum cfg80211_station_type statype)
5096 {
5097 if (params->listen_interval != -1 &&
5098 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5099 return -EINVAL;
5100
5101 if (params->support_p2p_ps != -1 &&
5102 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5103 return -EINVAL;
5104
5105 if (params->aid &&
5106 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5107 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5108 return -EINVAL;
5109
5110 /* When you run into this, adjust the code below for the new flag */
5111 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5112
5113 switch (statype) {
5114 case CFG80211_STA_MESH_PEER_KERNEL:
5115 case CFG80211_STA_MESH_PEER_USER:
5116 /*
5117 * No ignoring the TDLS flag here -- the userspace mesh
5118 * code doesn't have the bug of including TDLS in the
5119 * mask everywhere.
5120 */
5121 if (params->sta_flags_mask &
5122 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5123 BIT(NL80211_STA_FLAG_MFP) |
5124 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5125 return -EINVAL;
5126 break;
5127 case CFG80211_STA_TDLS_PEER_SETUP:
5128 case CFG80211_STA_TDLS_PEER_ACTIVE:
5129 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5130 return -EINVAL;
5131 /* ignore since it can't change */
5132 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5133 break;
5134 default:
5135 /* disallow mesh-specific things */
5136 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5137 return -EINVAL;
5138 if (params->local_pm)
5139 return -EINVAL;
5140 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5141 return -EINVAL;
5142 }
5143
5144 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5145 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5146 /* TDLS can't be set, ... */
5147 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5148 return -EINVAL;
5149 /*
5150 * ... but don't bother the driver with it. This works around
5151 * a hostapd/wpa_supplicant issue -- it always includes the
5152 * TLDS_PEER flag in the mask even for AP mode.
5153 */
5154 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5155 }
5156
5157 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5158 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5159 /* reject other things that can't change */
5160 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5161 return -EINVAL;
5162 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5163 return -EINVAL;
5164 if (params->supported_rates)
5165 return -EINVAL;
5166 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5167 params->he_capa)
5168 return -EINVAL;
5169 }
5170
5171 if (statype != CFG80211_STA_AP_CLIENT &&
5172 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5173 if (params->vlan)
5174 return -EINVAL;
5175 }
5176
5177 switch (statype) {
5178 case CFG80211_STA_AP_MLME_CLIENT:
5179 /* Use this only for authorizing/unauthorizing a station */
5180 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5181 return -EOPNOTSUPP;
5182 break;
5183 case CFG80211_STA_AP_CLIENT:
5184 case CFG80211_STA_AP_CLIENT_UNASSOC:
5185 /* accept only the listed bits */
5186 if (params->sta_flags_mask &
5187 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5188 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5189 BIT(NL80211_STA_FLAG_ASSOCIATED) |
5190 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5191 BIT(NL80211_STA_FLAG_WME) |
5192 BIT(NL80211_STA_FLAG_MFP)))
5193 return -EINVAL;
5194
5195 /* but authenticated/associated only if driver handles it */
5196 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5197 params->sta_flags_mask &
5198 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5199 BIT(NL80211_STA_FLAG_ASSOCIATED)))
5200 return -EINVAL;
5201 break;
5202 case CFG80211_STA_IBSS:
5203 case CFG80211_STA_AP_STA:
5204 /* reject any changes other than AUTHORIZED */
5205 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5206 return -EINVAL;
5207 break;
5208 case CFG80211_STA_TDLS_PEER_SETUP:
5209 /* reject any changes other than AUTHORIZED or WME */
5210 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5211 BIT(NL80211_STA_FLAG_WME)))
5212 return -EINVAL;
5213 /* force (at least) rates when authorizing */
5214 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5215 !params->supported_rates)
5216 return -EINVAL;
5217 break;
5218 case CFG80211_STA_TDLS_PEER_ACTIVE:
5219 /* reject any changes */
5220 return -EINVAL;
5221 case CFG80211_STA_MESH_PEER_KERNEL:
5222 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5223 return -EINVAL;
5224 break;
5225 case CFG80211_STA_MESH_PEER_USER:
5226 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5227 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5228 return -EINVAL;
5229 break;
5230 }
5231
5232 /*
5233 * Older kernel versions ignored this attribute entirely, so don't
5234 * reject attempts to update it but mark it as unused instead so the
5235 * driver won't look at the data.
5236 */
5237 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5238 statype != CFG80211_STA_TDLS_PEER_SETUP)
5239 params->opmode_notif_used = false;
5240
5241 return 0;
5242 }
5243 EXPORT_SYMBOL(cfg80211_check_station_change);
5244
5245 /*
5246 * Get vlan interface making sure it is running and on the right wiphy.
5247 */
5248 static struct net_device *get_vlan(struct genl_info *info,
5249 struct cfg80211_registered_device *rdev)
5250 {
5251 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5252 struct net_device *v;
5253 int ret;
5254
5255 if (!vlanattr)
5256 return NULL;
5257
5258 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5259 if (!v)
5260 return ERR_PTR(-ENODEV);
5261
5262 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5263 ret = -EINVAL;
5264 goto error;
5265 }
5266
5267 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5268 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5269 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5270 ret = -EINVAL;
5271 goto error;
5272 }
5273
5274 if (!netif_running(v)) {
5275 ret = -ENETDOWN;
5276 goto error;
5277 }
5278
5279 return v;
5280 error:
5281 dev_put(v);
5282 return ERR_PTR(ret);
5283 }
5284
5285 static const struct nla_policy
5286 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5287 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5288 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5289 };
5290
5291 static int nl80211_parse_sta_wme(struct genl_info *info,
5292 struct station_parameters *params)
5293 {
5294 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5295 struct nlattr *nla;
5296 int err;
5297
5298 /* parse WME attributes if present */
5299 if (!info->attrs[NL80211_ATTR_STA_WME])
5300 return 0;
5301
5302 nla = info->attrs[NL80211_ATTR_STA_WME];
5303 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5304 nl80211_sta_wme_policy, info->extack);
5305 if (err)
5306 return err;
5307
5308 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5309 params->uapsd_queues = nla_get_u8(
5310 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5311 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5312 return -EINVAL;
5313
5314 if (tb[NL80211_STA_WME_MAX_SP])
5315 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5316
5317 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5318 return -EINVAL;
5319
5320 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5321
5322 return 0;
5323 }
5324
5325 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5326 struct station_parameters *params)
5327 {
5328 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5329 params->supported_channels =
5330 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5331 params->supported_channels_len =
5332 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5333 /*
5334 * Need to include at least one (first channel, number of
5335 * channels) tuple for each subband, and must have proper
5336 * tuples for the rest of the data as well.
5337 */
5338 if (params->supported_channels_len < 2)
5339 return -EINVAL;
5340 if (params->supported_channels_len % 2)
5341 return -EINVAL;
5342 }
5343
5344 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5345 params->supported_oper_classes =
5346 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5347 params->supported_oper_classes_len =
5348 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5349 /*
5350 * The value of the Length field of the Supported Operating
5351 * Classes element is between 2 and 253.
5352 */
5353 if (params->supported_oper_classes_len < 2 ||
5354 params->supported_oper_classes_len > 253)
5355 return -EINVAL;
5356 }
5357 return 0;
5358 }
5359
5360 static int nl80211_set_station_tdls(struct genl_info *info,
5361 struct station_parameters *params)
5362 {
5363 int err;
5364 /* Dummy STA entry gets updated once the peer capabilities are known */
5365 if (info->attrs[NL80211_ATTR_PEER_AID])
5366 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5367 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5368 params->ht_capa =
5369 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5370 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5371 params->vht_capa =
5372 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5373 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5374 params->he_capa =
5375 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5376 params->he_capa_len =
5377 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5378
5379 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5380 return -EINVAL;
5381 }
5382
5383 err = nl80211_parse_sta_channel_info(info, params);
5384 if (err)
5385 return err;
5386
5387 return nl80211_parse_sta_wme(info, params);
5388 }
5389
5390 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5391 {
5392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5393 struct net_device *dev = info->user_ptr[1];
5394 struct station_parameters params;
5395 u8 *mac_addr;
5396 int err;
5397
5398 memset(&params, 0, sizeof(params));
5399
5400 if (!rdev->ops->change_station)
5401 return -EOPNOTSUPP;
5402
5403 /*
5404 * AID and listen_interval properties can be set only for unassociated
5405 * station. Include these parameters here and will check them in
5406 * cfg80211_check_station_change().
5407 */
5408 if (info->attrs[NL80211_ATTR_STA_AID])
5409 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5410
5411 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5412 params.listen_interval =
5413 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5414 else
5415 params.listen_interval = -1;
5416
5417 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5418 params.support_p2p_ps =
5419 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5420 else
5421 params.support_p2p_ps = -1;
5422
5423 if (!info->attrs[NL80211_ATTR_MAC])
5424 return -EINVAL;
5425
5426 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5427
5428 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5429 params.supported_rates =
5430 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5431 params.supported_rates_len =
5432 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5433 }
5434
5435 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5436 params.capability =
5437 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5438 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5439 }
5440
5441 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5442 params.ext_capab =
5443 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5444 params.ext_capab_len =
5445 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5446 }
5447
5448 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5449 return -EINVAL;
5450
5451 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5452 params.plink_action =
5453 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5454
5455 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5456 params.plink_state =
5457 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5458 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5459 params.peer_aid = nla_get_u16(
5460 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5461 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5462 }
5463
5464 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5465 params.local_pm = nla_get_u32(
5466 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5467
5468 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5469 params.opmode_notif_used = true;
5470 params.opmode_notif =
5471 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5472 }
5473
5474 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5475 params.airtime_weight =
5476 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5477
5478 if (params.airtime_weight &&
5479 !wiphy_ext_feature_isset(&rdev->wiphy,
5480 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5481 return -EOPNOTSUPP;
5482
5483 /* Include parameters for TDLS peer (will check later) */
5484 err = nl80211_set_station_tdls(info, &params);
5485 if (err)
5486 return err;
5487
5488 params.vlan = get_vlan(info, rdev);
5489 if (IS_ERR(params.vlan))
5490 return PTR_ERR(params.vlan);
5491
5492 switch (dev->ieee80211_ptr->iftype) {
5493 case NL80211_IFTYPE_AP:
5494 case NL80211_IFTYPE_AP_VLAN:
5495 case NL80211_IFTYPE_P2P_GO:
5496 case NL80211_IFTYPE_P2P_CLIENT:
5497 case NL80211_IFTYPE_STATION:
5498 case NL80211_IFTYPE_ADHOC:
5499 case NL80211_IFTYPE_MESH_POINT:
5500 break;
5501 default:
5502 err = -EOPNOTSUPP;
5503 goto out_put_vlan;
5504 }
5505
5506 /* driver will call cfg80211_check_station_change() */
5507 err = rdev_change_station(rdev, dev, mac_addr, &params);
5508
5509 out_put_vlan:
5510 if (params.vlan)
5511 dev_put(params.vlan);
5512
5513 return err;
5514 }
5515
5516 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5517 {
5518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5519 int err;
5520 struct net_device *dev = info->user_ptr[1];
5521 struct station_parameters params;
5522 u8 *mac_addr = NULL;
5523 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5524 BIT(NL80211_STA_FLAG_ASSOCIATED);
5525
5526 memset(&params, 0, sizeof(params));
5527
5528 if (!rdev->ops->add_station)
5529 return -EOPNOTSUPP;
5530
5531 if (!info->attrs[NL80211_ATTR_MAC])
5532 return -EINVAL;
5533
5534 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5535 return -EINVAL;
5536
5537 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5538 return -EINVAL;
5539
5540 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5541 !info->attrs[NL80211_ATTR_PEER_AID])
5542 return -EINVAL;
5543
5544 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5545 params.supported_rates =
5546 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5547 params.supported_rates_len =
5548 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5549 params.listen_interval =
5550 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5551
5552 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5553 params.support_p2p_ps =
5554 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5555 } else {
5556 /*
5557 * if not specified, assume it's supported for P2P GO interface,
5558 * and is NOT supported for AP interface
5559 */
5560 params.support_p2p_ps =
5561 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5562 }
5563
5564 if (info->attrs[NL80211_ATTR_PEER_AID])
5565 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5566 else
5567 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5568
5569 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5570 params.capability =
5571 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5572 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5573 }
5574
5575 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5576 params.ext_capab =
5577 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5578 params.ext_capab_len =
5579 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5580 }
5581
5582 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5583 params.ht_capa =
5584 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5585
5586 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5587 params.vht_capa =
5588 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5589
5590 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5591 params.he_capa =
5592 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5593 params.he_capa_len =
5594 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5595
5596 /* max len is validated in nla policy */
5597 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5598 return -EINVAL;
5599 }
5600
5601 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5602 params.opmode_notif_used = true;
5603 params.opmode_notif =
5604 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5605 }
5606
5607 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5608 params.plink_action =
5609 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5610
5611 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5612 params.airtime_weight =
5613 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5614
5615 if (params.airtime_weight &&
5616 !wiphy_ext_feature_isset(&rdev->wiphy,
5617 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5618 return -EOPNOTSUPP;
5619
5620 err = nl80211_parse_sta_channel_info(info, &params);
5621 if (err)
5622 return err;
5623
5624 err = nl80211_parse_sta_wme(info, &params);
5625 if (err)
5626 return err;
5627
5628 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5629 return -EINVAL;
5630
5631 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5632 * as userspace might just pass through the capabilities from the IEs
5633 * directly, rather than enforcing this restriction and returning an
5634 * error in this case.
5635 */
5636 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5637 params.ht_capa = NULL;
5638 params.vht_capa = NULL;
5639
5640 /* HE requires WME */
5641 if (params.he_capa_len)
5642 return -EINVAL;
5643 }
5644
5645 /* When you run into this, adjust the code below for the new flag */
5646 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5647
5648 switch (dev->ieee80211_ptr->iftype) {
5649 case NL80211_IFTYPE_AP:
5650 case NL80211_IFTYPE_AP_VLAN:
5651 case NL80211_IFTYPE_P2P_GO:
5652 /* ignore WME attributes if iface/sta is not capable */
5653 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5654 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5655 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5656
5657 /* TDLS peers cannot be added */
5658 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5659 info->attrs[NL80211_ATTR_PEER_AID])
5660 return -EINVAL;
5661 /* but don't bother the driver with it */
5662 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5663
5664 /* allow authenticated/associated only if driver handles it */
5665 if (!(rdev->wiphy.features &
5666 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5667 params.sta_flags_mask & auth_assoc)
5668 return -EINVAL;
5669
5670 /* Older userspace, or userspace wanting to be compatible with
5671 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5672 * and assoc flags in the mask, but assumes the station will be
5673 * added as associated anyway since this was the required driver
5674 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5675 * introduced.
5676 * In order to not bother drivers with this quirk in the API
5677 * set the flags in both the mask and set for new stations in
5678 * this case.
5679 */
5680 if (!(params.sta_flags_mask & auth_assoc)) {
5681 params.sta_flags_mask |= auth_assoc;
5682 params.sta_flags_set |= auth_assoc;
5683 }
5684
5685 /* must be last in here for error handling */
5686 params.vlan = get_vlan(info, rdev);
5687 if (IS_ERR(params.vlan))
5688 return PTR_ERR(params.vlan);
5689 break;
5690 case NL80211_IFTYPE_MESH_POINT:
5691 /* ignore uAPSD data */
5692 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5693
5694 /* associated is disallowed */
5695 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5696 return -EINVAL;
5697 /* TDLS peers cannot be added */
5698 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5699 info->attrs[NL80211_ATTR_PEER_AID])
5700 return -EINVAL;
5701 break;
5702 case NL80211_IFTYPE_STATION:
5703 case NL80211_IFTYPE_P2P_CLIENT:
5704 /* ignore uAPSD data */
5705 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5706
5707 /* these are disallowed */
5708 if (params.sta_flags_mask &
5709 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5710 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5711 return -EINVAL;
5712 /* Only TDLS peers can be added */
5713 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5714 return -EINVAL;
5715 /* Can only add if TDLS ... */
5716 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5717 return -EOPNOTSUPP;
5718 /* ... with external setup is supported */
5719 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5720 return -EOPNOTSUPP;
5721 /*
5722 * Older wpa_supplicant versions always mark the TDLS peer
5723 * as authorized, but it shouldn't yet be.
5724 */
5725 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5726 break;
5727 default:
5728 return -EOPNOTSUPP;
5729 }
5730
5731 /* be aware of params.vlan when changing code here */
5732
5733 err = rdev_add_station(rdev, dev, mac_addr, &params);
5734
5735 if (params.vlan)
5736 dev_put(params.vlan);
5737 return err;
5738 }
5739
5740 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5741 {
5742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5743 struct net_device *dev = info->user_ptr[1];
5744 struct station_del_parameters params;
5745
5746 memset(&params, 0, sizeof(params));
5747
5748 if (info->attrs[NL80211_ATTR_MAC])
5749 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5750
5751 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5752 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5753 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5754 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5755 return -EINVAL;
5756
5757 if (!rdev->ops->del_station)
5758 return -EOPNOTSUPP;
5759
5760 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5761 params.subtype =
5762 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5763 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5764 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5765 return -EINVAL;
5766 } else {
5767 /* Default to Deauthentication frame */
5768 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5769 }
5770
5771 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5772 params.reason_code =
5773 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5774 if (params.reason_code == 0)
5775 return -EINVAL; /* 0 is reserved */
5776 } else {
5777 /* Default to reason code 2 */
5778 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5779 }
5780
5781 return rdev_del_station(rdev, dev, &params);
5782 }
5783
5784 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5785 int flags, struct net_device *dev,
5786 u8 *dst, u8 *next_hop,
5787 struct mpath_info *pinfo)
5788 {
5789 void *hdr;
5790 struct nlattr *pinfoattr;
5791
5792 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5793 if (!hdr)
5794 return -1;
5795
5796 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5797 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5798 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5799 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5800 goto nla_put_failure;
5801
5802 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5803 if (!pinfoattr)
5804 goto nla_put_failure;
5805 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5806 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5807 pinfo->frame_qlen))
5808 goto nla_put_failure;
5809 if (((pinfo->filled & MPATH_INFO_SN) &&
5810 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5811 ((pinfo->filled & MPATH_INFO_METRIC) &&
5812 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5813 pinfo->metric)) ||
5814 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5815 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5816 pinfo->exptime)) ||
5817 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5818 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5819 pinfo->flags)) ||
5820 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5821 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5822 pinfo->discovery_timeout)) ||
5823 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5824 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5825 pinfo->discovery_retries)) ||
5826 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
5827 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
5828 pinfo->hop_count)) ||
5829 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
5830 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
5831 pinfo->path_change_count)))
5832 goto nla_put_failure;
5833
5834 nla_nest_end(msg, pinfoattr);
5835
5836 genlmsg_end(msg, hdr);
5837 return 0;
5838
5839 nla_put_failure:
5840 genlmsg_cancel(msg, hdr);
5841 return -EMSGSIZE;
5842 }
5843
5844 static int nl80211_dump_mpath(struct sk_buff *skb,
5845 struct netlink_callback *cb)
5846 {
5847 struct mpath_info pinfo;
5848 struct cfg80211_registered_device *rdev;
5849 struct wireless_dev *wdev;
5850 u8 dst[ETH_ALEN];
5851 u8 next_hop[ETH_ALEN];
5852 int path_idx = cb->args[2];
5853 int err;
5854
5855 rtnl_lock();
5856 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5857 if (err)
5858 goto out_err;
5859
5860 if (!rdev->ops->dump_mpath) {
5861 err = -EOPNOTSUPP;
5862 goto out_err;
5863 }
5864
5865 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5866 err = -EOPNOTSUPP;
5867 goto out_err;
5868 }
5869
5870 while (1) {
5871 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5872 next_hop, &pinfo);
5873 if (err == -ENOENT)
5874 break;
5875 if (err)
5876 goto out_err;
5877
5878 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5879 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5880 wdev->netdev, dst, next_hop,
5881 &pinfo) < 0)
5882 goto out;
5883
5884 path_idx++;
5885 }
5886
5887 out:
5888 cb->args[2] = path_idx;
5889 err = skb->len;
5890 out_err:
5891 rtnl_unlock();
5892 return err;
5893 }
5894
5895 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5896 {
5897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5898 int err;
5899 struct net_device *dev = info->user_ptr[1];
5900 struct mpath_info pinfo;
5901 struct sk_buff *msg;
5902 u8 *dst = NULL;
5903 u8 next_hop[ETH_ALEN];
5904
5905 memset(&pinfo, 0, sizeof(pinfo));
5906
5907 if (!info->attrs[NL80211_ATTR_MAC])
5908 return -EINVAL;
5909
5910 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5911
5912 if (!rdev->ops->get_mpath)
5913 return -EOPNOTSUPP;
5914
5915 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5916 return -EOPNOTSUPP;
5917
5918 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5919 if (err)
5920 return err;
5921
5922 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5923 if (!msg)
5924 return -ENOMEM;
5925
5926 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5927 dev, dst, next_hop, &pinfo) < 0) {
5928 nlmsg_free(msg);
5929 return -ENOBUFS;
5930 }
5931
5932 return genlmsg_reply(msg, info);
5933 }
5934
5935 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5936 {
5937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5938 struct net_device *dev = info->user_ptr[1];
5939 u8 *dst = NULL;
5940 u8 *next_hop = NULL;
5941
5942 if (!info->attrs[NL80211_ATTR_MAC])
5943 return -EINVAL;
5944
5945 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5946 return -EINVAL;
5947
5948 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5949 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5950
5951 if (!rdev->ops->change_mpath)
5952 return -EOPNOTSUPP;
5953
5954 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5955 return -EOPNOTSUPP;
5956
5957 return rdev_change_mpath(rdev, dev, dst, next_hop);
5958 }
5959
5960 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5961 {
5962 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5963 struct net_device *dev = info->user_ptr[1];
5964 u8 *dst = NULL;
5965 u8 *next_hop = NULL;
5966
5967 if (!info->attrs[NL80211_ATTR_MAC])
5968 return -EINVAL;
5969
5970 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5971 return -EINVAL;
5972
5973 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5974 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5975
5976 if (!rdev->ops->add_mpath)
5977 return -EOPNOTSUPP;
5978
5979 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5980 return -EOPNOTSUPP;
5981
5982 return rdev_add_mpath(rdev, dev, dst, next_hop);
5983 }
5984
5985 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5986 {
5987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5988 struct net_device *dev = info->user_ptr[1];
5989 u8 *dst = NULL;
5990
5991 if (info->attrs[NL80211_ATTR_MAC])
5992 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5993
5994 if (!rdev->ops->del_mpath)
5995 return -EOPNOTSUPP;
5996
5997 return rdev_del_mpath(rdev, dev, dst);
5998 }
5999
6000 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6001 {
6002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6003 int err;
6004 struct net_device *dev = info->user_ptr[1];
6005 struct mpath_info pinfo;
6006 struct sk_buff *msg;
6007 u8 *dst = NULL;
6008 u8 mpp[ETH_ALEN];
6009
6010 memset(&pinfo, 0, sizeof(pinfo));
6011
6012 if (!info->attrs[NL80211_ATTR_MAC])
6013 return -EINVAL;
6014
6015 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6016
6017 if (!rdev->ops->get_mpp)
6018 return -EOPNOTSUPP;
6019
6020 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6021 return -EOPNOTSUPP;
6022
6023 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6024 if (err)
6025 return err;
6026
6027 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6028 if (!msg)
6029 return -ENOMEM;
6030
6031 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6032 dev, dst, mpp, &pinfo) < 0) {
6033 nlmsg_free(msg);
6034 return -ENOBUFS;
6035 }
6036
6037 return genlmsg_reply(msg, info);
6038 }
6039
6040 static int nl80211_dump_mpp(struct sk_buff *skb,
6041 struct netlink_callback *cb)
6042 {
6043 struct mpath_info pinfo;
6044 struct cfg80211_registered_device *rdev;
6045 struct wireless_dev *wdev;
6046 u8 dst[ETH_ALEN];
6047 u8 mpp[ETH_ALEN];
6048 int path_idx = cb->args[2];
6049 int err;
6050
6051 rtnl_lock();
6052 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6053 if (err)
6054 goto out_err;
6055
6056 if (!rdev->ops->dump_mpp) {
6057 err = -EOPNOTSUPP;
6058 goto out_err;
6059 }
6060
6061 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6062 err = -EOPNOTSUPP;
6063 goto out_err;
6064 }
6065
6066 while (1) {
6067 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6068 mpp, &pinfo);
6069 if (err == -ENOENT)
6070 break;
6071 if (err)
6072 goto out_err;
6073
6074 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6075 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6076 wdev->netdev, dst, mpp,
6077 &pinfo) < 0)
6078 goto out;
6079
6080 path_idx++;
6081 }
6082
6083 out:
6084 cb->args[2] = path_idx;
6085 err = skb->len;
6086 out_err:
6087 rtnl_unlock();
6088 return err;
6089 }
6090
6091 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6092 {
6093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6094 struct net_device *dev = info->user_ptr[1];
6095 struct wireless_dev *wdev = dev->ieee80211_ptr;
6096 struct bss_parameters params;
6097 int err;
6098
6099 memset(&params, 0, sizeof(params));
6100 /* default to not changing parameters */
6101 params.use_cts_prot = -1;
6102 params.use_short_preamble = -1;
6103 params.use_short_slot_time = -1;
6104 params.ap_isolate = -1;
6105 params.ht_opmode = -1;
6106 params.p2p_ctwindow = -1;
6107 params.p2p_opp_ps = -1;
6108
6109 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6110 params.use_cts_prot =
6111 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6112 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6113 params.use_short_preamble =
6114 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6115 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6116 params.use_short_slot_time =
6117 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6118 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6119 params.basic_rates =
6120 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6121 params.basic_rates_len =
6122 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6123 }
6124 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6125 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6126 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6127 params.ht_opmode =
6128 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6129
6130 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6132 return -EINVAL;
6133 params.p2p_ctwindow =
6134 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6135 if (params.p2p_ctwindow != 0 &&
6136 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6137 return -EINVAL;
6138 }
6139
6140 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6141 u8 tmp;
6142
6143 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6144 return -EINVAL;
6145 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6146 params.p2p_opp_ps = tmp;
6147 if (params.p2p_opp_ps &&
6148 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6149 return -EINVAL;
6150 }
6151
6152 if (!rdev->ops->change_bss)
6153 return -EOPNOTSUPP;
6154
6155 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6156 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6157 return -EOPNOTSUPP;
6158
6159 wdev_lock(wdev);
6160 err = rdev_change_bss(rdev, dev, &params);
6161 wdev_unlock(wdev);
6162
6163 return err;
6164 }
6165
6166 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6167 {
6168 char *data = NULL;
6169 bool is_indoor;
6170 enum nl80211_user_reg_hint_type user_reg_hint_type;
6171 u32 owner_nlportid;
6172
6173 /*
6174 * You should only get this when cfg80211 hasn't yet initialized
6175 * completely when built-in to the kernel right between the time
6176 * window between nl80211_init() and regulatory_init(), if that is
6177 * even possible.
6178 */
6179 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6180 return -EINPROGRESS;
6181
6182 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6183 user_reg_hint_type =
6184 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6185 else
6186 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6187
6188 switch (user_reg_hint_type) {
6189 case NL80211_USER_REG_HINT_USER:
6190 case NL80211_USER_REG_HINT_CELL_BASE:
6191 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6192 return -EINVAL;
6193
6194 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6195 return regulatory_hint_user(data, user_reg_hint_type);
6196 case NL80211_USER_REG_HINT_INDOOR:
6197 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6198 owner_nlportid = info->snd_portid;
6199 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6200 } else {
6201 owner_nlportid = 0;
6202 is_indoor = true;
6203 }
6204
6205 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6206 default:
6207 return -EINVAL;
6208 }
6209 }
6210
6211 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6212 {
6213 return reg_reload_regdb();
6214 }
6215
6216 static int nl80211_get_mesh_config(struct sk_buff *skb,
6217 struct genl_info *info)
6218 {
6219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6220 struct net_device *dev = info->user_ptr[1];
6221 struct wireless_dev *wdev = dev->ieee80211_ptr;
6222 struct mesh_config cur_params;
6223 int err = 0;
6224 void *hdr;
6225 struct nlattr *pinfoattr;
6226 struct sk_buff *msg;
6227
6228 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6229 return -EOPNOTSUPP;
6230
6231 if (!rdev->ops->get_mesh_config)
6232 return -EOPNOTSUPP;
6233
6234 wdev_lock(wdev);
6235 /* If not connected, get default parameters */
6236 if (!wdev->mesh_id_len)
6237 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6238 else
6239 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6240 wdev_unlock(wdev);
6241
6242 if (err)
6243 return err;
6244
6245 /* Draw up a netlink message to send back */
6246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6247 if (!msg)
6248 return -ENOMEM;
6249 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6250 NL80211_CMD_GET_MESH_CONFIG);
6251 if (!hdr)
6252 goto out;
6253 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
6254 if (!pinfoattr)
6255 goto nla_put_failure;
6256 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6257 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6258 cur_params.dot11MeshRetryTimeout) ||
6259 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6260 cur_params.dot11MeshConfirmTimeout) ||
6261 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6262 cur_params.dot11MeshHoldingTimeout) ||
6263 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6264 cur_params.dot11MeshMaxPeerLinks) ||
6265 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6266 cur_params.dot11MeshMaxRetries) ||
6267 nla_put_u8(msg, NL80211_MESHCONF_TTL,
6268 cur_params.dot11MeshTTL) ||
6269 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6270 cur_params.element_ttl) ||
6271 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6272 cur_params.auto_open_plinks) ||
6273 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6274 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6275 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6276 cur_params.dot11MeshHWMPmaxPREQretries) ||
6277 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6278 cur_params.path_refresh_time) ||
6279 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6280 cur_params.min_discovery_timeout) ||
6281 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6282 cur_params.dot11MeshHWMPactivePathTimeout) ||
6283 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6284 cur_params.dot11MeshHWMPpreqMinInterval) ||
6285 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6286 cur_params.dot11MeshHWMPperrMinInterval) ||
6287 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6288 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6289 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6290 cur_params.dot11MeshHWMPRootMode) ||
6291 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6292 cur_params.dot11MeshHWMPRannInterval) ||
6293 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6294 cur_params.dot11MeshGateAnnouncementProtocol) ||
6295 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6296 cur_params.dot11MeshForwarding) ||
6297 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6298 cur_params.rssi_threshold) ||
6299 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6300 cur_params.ht_opmode) ||
6301 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6302 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6303 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6304 cur_params.dot11MeshHWMProotInterval) ||
6305 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6306 cur_params.dot11MeshHWMPconfirmationInterval) ||
6307 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6308 cur_params.power_mode) ||
6309 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6310 cur_params.dot11MeshAwakeWindowDuration) ||
6311 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6312 cur_params.plink_timeout) ||
6313 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6314 cur_params.dot11MeshConnectedToMeshGate))
6315 goto nla_put_failure;
6316 nla_nest_end(msg, pinfoattr);
6317 genlmsg_end(msg, hdr);
6318 return genlmsg_reply(msg, info);
6319
6320 nla_put_failure:
6321 out:
6322 nlmsg_free(msg);
6323 return -ENOBUFS;
6324 }
6325
6326 static const struct nla_policy
6327 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6328 [NL80211_MESHCONF_RETRY_TIMEOUT] =
6329 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6330 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6331 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6332 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6333 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6334 [NL80211_MESHCONF_MAX_PEER_LINKS] =
6335 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6336 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6337 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6338 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6339 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6340 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6341 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6342 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6343 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6344 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6345 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6346 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6347 NLA_POLICY_MIN(NLA_U16, 1),
6348 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6349 NLA_POLICY_MIN(NLA_U16, 1),
6350 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6351 NLA_POLICY_MIN(NLA_U16, 1),
6352 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6353 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6354 NLA_POLICY_MIN(NLA_U16, 1),
6355 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6356 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6357 [NL80211_MESHCONF_RSSI_THRESHOLD] =
6358 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6359 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6360 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6361 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6362 NLA_POLICY_MIN(NLA_U16, 1),
6363 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6364 NLA_POLICY_MIN(NLA_U16, 1),
6365 [NL80211_MESHCONF_POWER_MODE] =
6366 NLA_POLICY_RANGE(NLA_U32,
6367 NL80211_MESH_POWER_ACTIVE,
6368 NL80211_MESH_POWER_MAX),
6369 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6370 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6371 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6372 };
6373
6374 static const struct nla_policy
6375 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6376 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6377 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6378 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6379 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6380 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6381 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6382 [NL80211_MESH_SETUP_IE] =
6383 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6384 IEEE80211_MAX_DATA_LEN),
6385 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6386 };
6387
6388 static int nl80211_parse_mesh_config(struct genl_info *info,
6389 struct mesh_config *cfg,
6390 u32 *mask_out)
6391 {
6392 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6393 u32 mask = 0;
6394 u16 ht_opmode;
6395
6396 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
6397 do { \
6398 if (tb[attr]) { \
6399 cfg->param = fn(tb[attr]); \
6400 mask |= BIT((attr) - 1); \
6401 } \
6402 } while (0)
6403
6404 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6405 return -EINVAL;
6406 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6407 info->attrs[NL80211_ATTR_MESH_CONFIG],
6408 nl80211_meshconf_params_policy, info->extack))
6409 return -EINVAL;
6410
6411 /* This makes sure that there aren't more than 32 mesh config
6412 * parameters (otherwise our bitfield scheme would not work.) */
6413 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6414
6415 /* Fill in the params struct */
6416 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6417 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6418 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6419 NL80211_MESHCONF_CONFIRM_TIMEOUT,
6420 nla_get_u16);
6421 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6422 NL80211_MESHCONF_HOLDING_TIMEOUT,
6423 nla_get_u16);
6424 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6425 NL80211_MESHCONF_MAX_PEER_LINKS,
6426 nla_get_u16);
6427 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6428 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6429 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6430 NL80211_MESHCONF_TTL, nla_get_u8);
6431 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6432 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6433 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6434 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6435 nla_get_u8);
6436 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6437 mask,
6438 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6439 nla_get_u32);
6440 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6441 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6442 nla_get_u8);
6443 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6444 NL80211_MESHCONF_PATH_REFRESH_TIME,
6445 nla_get_u32);
6446 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6447 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6448 return -EINVAL;
6449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6450 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6451 nla_get_u16);
6452 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6453 mask,
6454 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6455 nla_get_u32);
6456 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6457 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6458 cfg->dot11MeshHWMPactivePathTimeout > 65535))
6459 return -EINVAL;
6460 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6461 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6462 nla_get_u16);
6463 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6464 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6465 nla_get_u16);
6466 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6467 dot11MeshHWMPnetDiameterTraversalTime, mask,
6468 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6469 nla_get_u16);
6470 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6471 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6472 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6473 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6474 nla_get_u16);
6475 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6476 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6477 nla_get_u8);
6478 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6479 NL80211_MESHCONF_FORWARDING, nla_get_u8);
6480 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6481 NL80211_MESHCONF_RSSI_THRESHOLD,
6482 nla_get_s32);
6483 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6484 NL80211_MESHCONF_CONNECTED_TO_GATE,
6485 nla_get_u8);
6486 /*
6487 * Check HT operation mode based on
6488 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6489 */
6490 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6491 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6492
6493 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6494 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6495 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6496 return -EINVAL;
6497
6498 /* NON_HT_STA bit is reserved, but some programs set it */
6499 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6500
6501 cfg->ht_opmode = ht_opmode;
6502 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6503 }
6504 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6505 dot11MeshHWMPactivePathToRootTimeout, mask,
6506 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6507 nla_get_u32);
6508 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6509 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6510 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6511 return -EINVAL;
6512 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6513 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6514 nla_get_u16);
6515 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6516 mask,
6517 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6518 nla_get_u16);
6519 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6520 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6521 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6522 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6523 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6524 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6525 if (mask_out)
6526 *mask_out = mask;
6527
6528 return 0;
6529
6530 #undef FILL_IN_MESH_PARAM_IF_SET
6531 }
6532
6533 static int nl80211_parse_mesh_setup(struct genl_info *info,
6534 struct mesh_setup *setup)
6535 {
6536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6537 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6538
6539 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6540 return -EINVAL;
6541 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6542 info->attrs[NL80211_ATTR_MESH_SETUP],
6543 nl80211_mesh_setup_params_policy, info->extack))
6544 return -EINVAL;
6545
6546 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6547 setup->sync_method =
6548 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6549 IEEE80211_SYNC_METHOD_VENDOR :
6550 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6551
6552 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6553 setup->path_sel_proto =
6554 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6555 IEEE80211_PATH_PROTOCOL_VENDOR :
6556 IEEE80211_PATH_PROTOCOL_HWMP;
6557
6558 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6559 setup->path_metric =
6560 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6561 IEEE80211_PATH_METRIC_VENDOR :
6562 IEEE80211_PATH_METRIC_AIRTIME;
6563
6564 if (tb[NL80211_MESH_SETUP_IE]) {
6565 struct nlattr *ieattr =
6566 tb[NL80211_MESH_SETUP_IE];
6567 setup->ie = nla_data(ieattr);
6568 setup->ie_len = nla_len(ieattr);
6569 }
6570 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6571 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6572 return -EINVAL;
6573 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6574 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6575 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6576 if (setup->is_secure)
6577 setup->user_mpm = true;
6578
6579 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6580 if (!setup->user_mpm)
6581 return -EINVAL;
6582 setup->auth_id =
6583 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6584 }
6585
6586 return 0;
6587 }
6588
6589 static int nl80211_update_mesh_config(struct sk_buff *skb,
6590 struct genl_info *info)
6591 {
6592 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6593 struct net_device *dev = info->user_ptr[1];
6594 struct wireless_dev *wdev = dev->ieee80211_ptr;
6595 struct mesh_config cfg;
6596 u32 mask;
6597 int err;
6598
6599 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6600 return -EOPNOTSUPP;
6601
6602 if (!rdev->ops->update_mesh_config)
6603 return -EOPNOTSUPP;
6604
6605 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6606 if (err)
6607 return err;
6608
6609 wdev_lock(wdev);
6610 if (!wdev->mesh_id_len)
6611 err = -ENOLINK;
6612
6613 if (!err)
6614 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6615
6616 wdev_unlock(wdev);
6617
6618 return err;
6619 }
6620
6621 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6622 struct sk_buff *msg)
6623 {
6624 struct nlattr *nl_reg_rules;
6625 unsigned int i;
6626
6627 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6628 (regdom->dfs_region &&
6629 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6630 goto nla_put_failure;
6631
6632 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6633 if (!nl_reg_rules)
6634 goto nla_put_failure;
6635
6636 for (i = 0; i < regdom->n_reg_rules; i++) {
6637 struct nlattr *nl_reg_rule;
6638 const struct ieee80211_reg_rule *reg_rule;
6639 const struct ieee80211_freq_range *freq_range;
6640 const struct ieee80211_power_rule *power_rule;
6641 unsigned int max_bandwidth_khz;
6642
6643 reg_rule = &regdom->reg_rules[i];
6644 freq_range = &reg_rule->freq_range;
6645 power_rule = &reg_rule->power_rule;
6646
6647 nl_reg_rule = nla_nest_start(msg, i);
6648 if (!nl_reg_rule)
6649 goto nla_put_failure;
6650
6651 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6652 if (!max_bandwidth_khz)
6653 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6654 reg_rule);
6655
6656 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6657 reg_rule->flags) ||
6658 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6659 freq_range->start_freq_khz) ||
6660 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6661 freq_range->end_freq_khz) ||
6662 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6663 max_bandwidth_khz) ||
6664 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6665 power_rule->max_antenna_gain) ||
6666 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6667 power_rule->max_eirp) ||
6668 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6669 reg_rule->dfs_cac_ms))
6670 goto nla_put_failure;
6671
6672 nla_nest_end(msg, nl_reg_rule);
6673 }
6674
6675 nla_nest_end(msg, nl_reg_rules);
6676 return 0;
6677
6678 nla_put_failure:
6679 return -EMSGSIZE;
6680 }
6681
6682 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6683 {
6684 const struct ieee80211_regdomain *regdom = NULL;
6685 struct cfg80211_registered_device *rdev;
6686 struct wiphy *wiphy = NULL;
6687 struct sk_buff *msg;
6688 void *hdr;
6689
6690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6691 if (!msg)
6692 return -ENOBUFS;
6693
6694 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6695 NL80211_CMD_GET_REG);
6696 if (!hdr)
6697 goto put_failure;
6698
6699 if (info->attrs[NL80211_ATTR_WIPHY]) {
6700 bool self_managed;
6701
6702 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6703 if (IS_ERR(rdev)) {
6704 nlmsg_free(msg);
6705 return PTR_ERR(rdev);
6706 }
6707
6708 wiphy = &rdev->wiphy;
6709 self_managed = wiphy->regulatory_flags &
6710 REGULATORY_WIPHY_SELF_MANAGED;
6711 regdom = get_wiphy_regdom(wiphy);
6712
6713 /* a self-managed-reg device must have a private regdom */
6714 if (WARN_ON(!regdom && self_managed)) {
6715 nlmsg_free(msg);
6716 return -EINVAL;
6717 }
6718
6719 if (regdom &&
6720 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6721 goto nla_put_failure;
6722 }
6723
6724 if (!wiphy && reg_last_request_cell_base() &&
6725 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6726 NL80211_USER_REG_HINT_CELL_BASE))
6727 goto nla_put_failure;
6728
6729 rcu_read_lock();
6730
6731 if (!regdom)
6732 regdom = rcu_dereference(cfg80211_regdomain);
6733
6734 if (nl80211_put_regdom(regdom, msg))
6735 goto nla_put_failure_rcu;
6736
6737 rcu_read_unlock();
6738
6739 genlmsg_end(msg, hdr);
6740 return genlmsg_reply(msg, info);
6741
6742 nla_put_failure_rcu:
6743 rcu_read_unlock();
6744 nla_put_failure:
6745 put_failure:
6746 nlmsg_free(msg);
6747 return -EMSGSIZE;
6748 }
6749
6750 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6751 u32 seq, int flags, struct wiphy *wiphy,
6752 const struct ieee80211_regdomain *regdom)
6753 {
6754 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6755 NL80211_CMD_GET_REG);
6756
6757 if (!hdr)
6758 return -1;
6759
6760 genl_dump_check_consistent(cb, hdr);
6761
6762 if (nl80211_put_regdom(regdom, msg))
6763 goto nla_put_failure;
6764
6765 if (!wiphy && reg_last_request_cell_base() &&
6766 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6767 NL80211_USER_REG_HINT_CELL_BASE))
6768 goto nla_put_failure;
6769
6770 if (wiphy &&
6771 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6772 goto nla_put_failure;
6773
6774 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6775 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6776 goto nla_put_failure;
6777
6778 genlmsg_end(msg, hdr);
6779 return 0;
6780
6781 nla_put_failure:
6782 genlmsg_cancel(msg, hdr);
6783 return -EMSGSIZE;
6784 }
6785
6786 static int nl80211_get_reg_dump(struct sk_buff *skb,
6787 struct netlink_callback *cb)
6788 {
6789 const struct ieee80211_regdomain *regdom = NULL;
6790 struct cfg80211_registered_device *rdev;
6791 int err, reg_idx, start = cb->args[2];
6792
6793 rtnl_lock();
6794
6795 if (cfg80211_regdomain && start == 0) {
6796 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6797 NLM_F_MULTI, NULL,
6798 rtnl_dereference(cfg80211_regdomain));
6799 if (err < 0)
6800 goto out_err;
6801 }
6802
6803 /* the global regdom is idx 0 */
6804 reg_idx = 1;
6805 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6806 regdom = get_wiphy_regdom(&rdev->wiphy);
6807 if (!regdom)
6808 continue;
6809
6810 if (++reg_idx <= start)
6811 continue;
6812
6813 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6814 NLM_F_MULTI, &rdev->wiphy, regdom);
6815 if (err < 0) {
6816 reg_idx--;
6817 break;
6818 }
6819 }
6820
6821 cb->args[2] = reg_idx;
6822 err = skb->len;
6823 out_err:
6824 rtnl_unlock();
6825 return err;
6826 }
6827
6828 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6829 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6830 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6831 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6832 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6833 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6834 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6835 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6836 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6837 };
6838
6839 static int parse_reg_rule(struct nlattr *tb[],
6840 struct ieee80211_reg_rule *reg_rule)
6841 {
6842 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6843 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6844
6845 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6846 return -EINVAL;
6847 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6848 return -EINVAL;
6849 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6850 return -EINVAL;
6851 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6852 return -EINVAL;
6853 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6854 return -EINVAL;
6855
6856 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6857
6858 freq_range->start_freq_khz =
6859 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6860 freq_range->end_freq_khz =
6861 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6862 freq_range->max_bandwidth_khz =
6863 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6864
6865 power_rule->max_eirp =
6866 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6867
6868 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6869 power_rule->max_antenna_gain =
6870 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6871
6872 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6873 reg_rule->dfs_cac_ms =
6874 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6875
6876 return 0;
6877 }
6878
6879 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6880 {
6881 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6882 struct nlattr *nl_reg_rule;
6883 char *alpha2;
6884 int rem_reg_rules, r;
6885 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6886 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6887 struct ieee80211_regdomain *rd;
6888
6889 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6890 return -EINVAL;
6891
6892 if (!info->attrs[NL80211_ATTR_REG_RULES])
6893 return -EINVAL;
6894
6895 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6896
6897 if (info->attrs[NL80211_ATTR_DFS_REGION])
6898 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6899
6900 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6901 rem_reg_rules) {
6902 num_rules++;
6903 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6904 return -EINVAL;
6905 }
6906
6907 if (!reg_is_valid_request(alpha2))
6908 return -EINVAL;
6909
6910 size_of_regd = sizeof(struct ieee80211_regdomain) +
6911 num_rules * sizeof(struct ieee80211_reg_rule);
6912
6913 rd = kzalloc(size_of_regd, GFP_KERNEL);
6914 if (!rd)
6915 return -ENOMEM;
6916
6917 rd->n_reg_rules = num_rules;
6918 rd->alpha2[0] = alpha2[0];
6919 rd->alpha2[1] = alpha2[1];
6920
6921 /*
6922 * Disable DFS master mode if the DFS region was
6923 * not supported or known on this kernel.
6924 */
6925 if (reg_supported_dfs_region(dfs_region))
6926 rd->dfs_region = dfs_region;
6927
6928 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6929 rem_reg_rules) {
6930 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6931 nl_reg_rule, reg_rule_policy,
6932 info->extack);
6933 if (r)
6934 goto bad_reg;
6935 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6936 if (r)
6937 goto bad_reg;
6938
6939 rule_idx++;
6940
6941 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6942 r = -EINVAL;
6943 goto bad_reg;
6944 }
6945 }
6946
6947 /* set_regdom takes ownership of rd */
6948 return set_regdom(rd, REGD_SOURCE_CRDA);
6949 bad_reg:
6950 kfree(rd);
6951 return r;
6952 }
6953 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6954
6955 static int validate_scan_freqs(struct nlattr *freqs)
6956 {
6957 struct nlattr *attr1, *attr2;
6958 int n_channels = 0, tmp1, tmp2;
6959
6960 nla_for_each_nested(attr1, freqs, tmp1)
6961 if (nla_len(attr1) != sizeof(u32))
6962 return 0;
6963
6964 nla_for_each_nested(attr1, freqs, tmp1) {
6965 n_channels++;
6966 /*
6967 * Some hardware has a limited channel list for
6968 * scanning, and it is pretty much nonsensical
6969 * to scan for a channel twice, so disallow that
6970 * and don't require drivers to check that the
6971 * channel list they get isn't longer than what
6972 * they can scan, as long as they can scan all
6973 * the channels they registered at once.
6974 */
6975 nla_for_each_nested(attr2, freqs, tmp2)
6976 if (attr1 != attr2 &&
6977 nla_get_u32(attr1) == nla_get_u32(attr2))
6978 return 0;
6979 }
6980
6981 return n_channels;
6982 }
6983
6984 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6985 {
6986 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6987 }
6988
6989 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6990 struct cfg80211_bss_selection *bss_select)
6991 {
6992 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6993 struct nlattr *nest;
6994 int err;
6995 bool found = false;
6996 int i;
6997
6998 /* only process one nested attribute */
6999 nest = nla_data(nla);
7000 if (!nla_ok(nest, nla_len(nest)))
7001 return -EINVAL;
7002
7003 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
7004 nl80211_bss_select_policy, NULL);
7005 if (err)
7006 return err;
7007
7008 /* only one attribute may be given */
7009 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7010 if (attr[i]) {
7011 if (found)
7012 return -EINVAL;
7013 found = true;
7014 }
7015 }
7016
7017 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7018
7019 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7020 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7021
7022 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7023 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7024 bss_select->param.band_pref =
7025 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7026 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7027 return -EINVAL;
7028 }
7029
7030 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7031 struct nl80211_bss_select_rssi_adjust *adj_param;
7032
7033 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7034 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7035 bss_select->param.adjust.band = adj_param->band;
7036 bss_select->param.adjust.delta = adj_param->delta;
7037 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7038 return -EINVAL;
7039 }
7040
7041 /* user-space did not provide behaviour attribute */
7042 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7043 return -EINVAL;
7044
7045 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7046 return -EINVAL;
7047
7048 return 0;
7049 }
7050
7051 int nl80211_parse_random_mac(struct nlattr **attrs,
7052 u8 *mac_addr, u8 *mac_addr_mask)
7053 {
7054 int i;
7055
7056 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7057 eth_zero_addr(mac_addr);
7058 eth_zero_addr(mac_addr_mask);
7059 mac_addr[0] = 0x2;
7060 mac_addr_mask[0] = 0x3;
7061
7062 return 0;
7063 }
7064
7065 /* need both or none */
7066 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7067 return -EINVAL;
7068
7069 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7070 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7071
7072 /* don't allow or configure an mcast address */
7073 if (!is_multicast_ether_addr(mac_addr_mask) ||
7074 is_multicast_ether_addr(mac_addr))
7075 return -EINVAL;
7076
7077 /*
7078 * allow users to pass a MAC address that has bits set outside
7079 * of the mask, but don't bother drivers with having to deal
7080 * with such bits
7081 */
7082 for (i = 0; i < ETH_ALEN; i++)
7083 mac_addr[i] &= mac_addr_mask[i];
7084
7085 return 0;
7086 }
7087
7088 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7089 {
7090 ASSERT_WDEV_LOCK(wdev);
7091
7092 if (!cfg80211_beaconing_iface_active(wdev))
7093 return true;
7094
7095 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7096 return true;
7097
7098 return regulatory_pre_cac_allowed(wdev->wiphy);
7099 }
7100
7101 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7102 enum nl80211_ext_feature_index feat)
7103 {
7104 if (!(flags & flag))
7105 return true;
7106 if (wiphy_ext_feature_isset(wiphy, feat))
7107 return true;
7108 return false;
7109 }
7110
7111 static int
7112 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7113 void *request, struct nlattr **attrs,
7114 bool is_sched_scan)
7115 {
7116 u8 *mac_addr, *mac_addr_mask;
7117 u32 *flags;
7118 enum nl80211_feature_flags randomness_flag;
7119
7120 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7121 return 0;
7122
7123 if (is_sched_scan) {
7124 struct cfg80211_sched_scan_request *req = request;
7125
7126 randomness_flag = wdev ?
7127 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7128 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7129 flags = &req->flags;
7130 mac_addr = req->mac_addr;
7131 mac_addr_mask = req->mac_addr_mask;
7132 } else {
7133 struct cfg80211_scan_request *req = request;
7134
7135 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7136 flags = &req->flags;
7137 mac_addr = req->mac_addr;
7138 mac_addr_mask = req->mac_addr_mask;
7139 }
7140
7141 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7142
7143 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7144 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7145 !nl80211_check_scan_feat(wiphy, *flags,
7146 NL80211_SCAN_FLAG_LOW_SPAN,
7147 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7148 !nl80211_check_scan_feat(wiphy, *flags,
7149 NL80211_SCAN_FLAG_LOW_POWER,
7150 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7151 !nl80211_check_scan_feat(wiphy, *flags,
7152 NL80211_SCAN_FLAG_HIGH_ACCURACY,
7153 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7154 !nl80211_check_scan_feat(wiphy, *flags,
7155 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7156 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7157 !nl80211_check_scan_feat(wiphy, *flags,
7158 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7159 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7160 !nl80211_check_scan_feat(wiphy, *flags,
7161 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7162 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7163 !nl80211_check_scan_feat(wiphy, *flags,
7164 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7165 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7166 !nl80211_check_scan_feat(wiphy, *flags,
7167 NL80211_SCAN_FLAG_RANDOM_SN,
7168 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7169 !nl80211_check_scan_feat(wiphy, *flags,
7170 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7171 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7172 return -EOPNOTSUPP;
7173
7174 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7175 int err;
7176
7177 if (!(wiphy->features & randomness_flag) ||
7178 (wdev && wdev->current_bss))
7179 return -EOPNOTSUPP;
7180
7181 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7182 if (err)
7183 return err;
7184 }
7185
7186 return 0;
7187 }
7188
7189 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7190 {
7191 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7192 struct wireless_dev *wdev = info->user_ptr[1];
7193 struct cfg80211_scan_request *request;
7194 struct nlattr *attr;
7195 struct wiphy *wiphy;
7196 int err, tmp, n_ssids = 0, n_channels, i;
7197 size_t ie_len;
7198
7199 wiphy = &rdev->wiphy;
7200
7201 if (wdev->iftype == NL80211_IFTYPE_NAN)
7202 return -EOPNOTSUPP;
7203
7204 if (!rdev->ops->scan)
7205 return -EOPNOTSUPP;
7206
7207 if (rdev->scan_req || rdev->scan_msg) {
7208 err = -EBUSY;
7209 goto unlock;
7210 }
7211
7212 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7213 n_channels = validate_scan_freqs(
7214 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7215 if (!n_channels) {
7216 err = -EINVAL;
7217 goto unlock;
7218 }
7219 } else {
7220 n_channels = ieee80211_get_num_supported_channels(wiphy);
7221 }
7222
7223 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7224 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7225 n_ssids++;
7226
7227 if (n_ssids > wiphy->max_scan_ssids) {
7228 err = -EINVAL;
7229 goto unlock;
7230 }
7231
7232 if (info->attrs[NL80211_ATTR_IE])
7233 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7234 else
7235 ie_len = 0;
7236
7237 if (ie_len > wiphy->max_scan_ie_len) {
7238 err = -EINVAL;
7239 goto unlock;
7240 }
7241
7242 request = kzalloc(sizeof(*request)
7243 + sizeof(*request->ssids) * n_ssids
7244 + sizeof(*request->channels) * n_channels
7245 + ie_len, GFP_KERNEL);
7246 if (!request) {
7247 err = -ENOMEM;
7248 goto unlock;
7249 }
7250
7251 if (n_ssids)
7252 request->ssids = (void *)&request->channels[n_channels];
7253 request->n_ssids = n_ssids;
7254 if (ie_len) {
7255 if (n_ssids)
7256 request->ie = (void *)(request->ssids + n_ssids);
7257 else
7258 request->ie = (void *)(request->channels + n_channels);
7259 }
7260
7261 i = 0;
7262 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7263 /* user specified, bail out if channel not found */
7264 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7265 struct ieee80211_channel *chan;
7266
7267 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7268
7269 if (!chan) {
7270 err = -EINVAL;
7271 goto out_free;
7272 }
7273
7274 /* ignore disabled channels */
7275 if (chan->flags & IEEE80211_CHAN_DISABLED)
7276 continue;
7277
7278 request->channels[i] = chan;
7279 i++;
7280 }
7281 } else {
7282 enum nl80211_band band;
7283
7284 /* all channels */
7285 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7286 int j;
7287
7288 if (!wiphy->bands[band])
7289 continue;
7290 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7291 struct ieee80211_channel *chan;
7292
7293 chan = &wiphy->bands[band]->channels[j];
7294
7295 if (chan->flags & IEEE80211_CHAN_DISABLED)
7296 continue;
7297
7298 request->channels[i] = chan;
7299 i++;
7300 }
7301 }
7302 }
7303
7304 if (!i) {
7305 err = -EINVAL;
7306 goto out_free;
7307 }
7308
7309 request->n_channels = i;
7310
7311 wdev_lock(wdev);
7312 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7313 struct ieee80211_channel *chan;
7314
7315 if (request->n_channels != 1) {
7316 wdev_unlock(wdev);
7317 err = -EBUSY;
7318 goto out_free;
7319 }
7320
7321 chan = request->channels[0];
7322 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7323 wdev_unlock(wdev);
7324 err = -EBUSY;
7325 goto out_free;
7326 }
7327 }
7328 wdev_unlock(wdev);
7329
7330 i = 0;
7331 if (n_ssids) {
7332 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7333 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7334 err = -EINVAL;
7335 goto out_free;
7336 }
7337 request->ssids[i].ssid_len = nla_len(attr);
7338 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7339 i++;
7340 }
7341 }
7342
7343 if (info->attrs[NL80211_ATTR_IE]) {
7344 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7345 memcpy((void *)request->ie,
7346 nla_data(info->attrs[NL80211_ATTR_IE]),
7347 request->ie_len);
7348 }
7349
7350 for (i = 0; i < NUM_NL80211_BANDS; i++)
7351 if (wiphy->bands[i])
7352 request->rates[i] =
7353 (1 << wiphy->bands[i]->n_bitrates) - 1;
7354
7355 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7356 nla_for_each_nested(attr,
7357 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7358 tmp) {
7359 enum nl80211_band band = nla_type(attr);
7360
7361 if (band < 0 || band >= NUM_NL80211_BANDS) {
7362 err = -EINVAL;
7363 goto out_free;
7364 }
7365
7366 if (!wiphy->bands[band])
7367 continue;
7368
7369 err = ieee80211_get_ratemask(wiphy->bands[band],
7370 nla_data(attr),
7371 nla_len(attr),
7372 &request->rates[band]);
7373 if (err)
7374 goto out_free;
7375 }
7376 }
7377
7378 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7379 if (!wiphy_ext_feature_isset(wiphy,
7380 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7381 err = -EOPNOTSUPP;
7382 goto out_free;
7383 }
7384
7385 request->duration =
7386 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7387 request->duration_mandatory =
7388 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7389 }
7390
7391 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7392 false);
7393 if (err)
7394 goto out_free;
7395
7396 request->no_cck =
7397 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7398
7399 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7400 * BSSID to scan for. This was problematic because that same attribute
7401 * was already used for another purpose (local random MAC address). The
7402 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7403 * compatibility with older userspace components, also use the
7404 * NL80211_ATTR_MAC value here if it can be determined to be used for
7405 * the specific BSSID use case instead of the random MAC address
7406 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7407 */
7408 if (info->attrs[NL80211_ATTR_BSSID])
7409 memcpy(request->bssid,
7410 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7411 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7412 info->attrs[NL80211_ATTR_MAC])
7413 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7414 ETH_ALEN);
7415 else
7416 eth_broadcast_addr(request->bssid);
7417
7418 request->wdev = wdev;
7419 request->wiphy = &rdev->wiphy;
7420 request->scan_start = jiffies;
7421
7422 rdev->scan_req = request;
7423 err = rdev_scan(rdev, request);
7424
7425 if (!err) {
7426 nl80211_send_scan_start(rdev, wdev);
7427 if (wdev->netdev)
7428 dev_hold(wdev->netdev);
7429 } else {
7430 out_free:
7431 rdev->scan_req = NULL;
7432 kfree(request);
7433 }
7434
7435 unlock:
7436 return err;
7437 }
7438
7439 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7440 {
7441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7442 struct wireless_dev *wdev = info->user_ptr[1];
7443
7444 if (!rdev->ops->abort_scan)
7445 return -EOPNOTSUPP;
7446
7447 if (rdev->scan_msg)
7448 return 0;
7449
7450 if (!rdev->scan_req)
7451 return -ENOENT;
7452
7453 rdev_abort_scan(rdev, wdev);
7454 return 0;
7455 }
7456
7457 static int
7458 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7459 struct cfg80211_sched_scan_request *request,
7460 struct nlattr **attrs)
7461 {
7462 int tmp, err, i = 0;
7463 struct nlattr *attr;
7464
7465 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7466 u32 interval;
7467
7468 /*
7469 * If scan plans are not specified,
7470 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7471 * case one scan plan will be set with the specified scan
7472 * interval and infinite number of iterations.
7473 */
7474 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7475 if (!interval)
7476 return -EINVAL;
7477
7478 request->scan_plans[0].interval =
7479 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7480 if (!request->scan_plans[0].interval)
7481 return -EINVAL;
7482
7483 if (request->scan_plans[0].interval >
7484 wiphy->max_sched_scan_plan_interval)
7485 request->scan_plans[0].interval =
7486 wiphy->max_sched_scan_plan_interval;
7487
7488 return 0;
7489 }
7490
7491 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7492 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7493
7494 if (WARN_ON(i >= n_plans))
7495 return -EINVAL;
7496
7497 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7498 attr, nl80211_plan_policy, NULL);
7499 if (err)
7500 return err;
7501
7502 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7503 return -EINVAL;
7504
7505 request->scan_plans[i].interval =
7506 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7507 if (!request->scan_plans[i].interval ||
7508 request->scan_plans[i].interval >
7509 wiphy->max_sched_scan_plan_interval)
7510 return -EINVAL;
7511
7512 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7513 request->scan_plans[i].iterations =
7514 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7515 if (!request->scan_plans[i].iterations ||
7516 (request->scan_plans[i].iterations >
7517 wiphy->max_sched_scan_plan_iterations))
7518 return -EINVAL;
7519 } else if (i < n_plans - 1) {
7520 /*
7521 * All scan plans but the last one must specify
7522 * a finite number of iterations
7523 */
7524 return -EINVAL;
7525 }
7526
7527 i++;
7528 }
7529
7530 /*
7531 * The last scan plan must not specify the number of
7532 * iterations, it is supposed to run infinitely
7533 */
7534 if (request->scan_plans[n_plans - 1].iterations)
7535 return -EINVAL;
7536
7537 return 0;
7538 }
7539
7540 static struct cfg80211_sched_scan_request *
7541 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7542 struct nlattr **attrs, int max_match_sets)
7543 {
7544 struct cfg80211_sched_scan_request *request;
7545 struct nlattr *attr;
7546 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7547 enum nl80211_band band;
7548 size_t ie_len;
7549 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7550 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7551
7552 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7553 n_channels = validate_scan_freqs(
7554 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7555 if (!n_channels)
7556 return ERR_PTR(-EINVAL);
7557 } else {
7558 n_channels = ieee80211_get_num_supported_channels(wiphy);
7559 }
7560
7561 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7562 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7563 tmp)
7564 n_ssids++;
7565
7566 if (n_ssids > wiphy->max_sched_scan_ssids)
7567 return ERR_PTR(-EINVAL);
7568
7569 /*
7570 * First, count the number of 'real' matchsets. Due to an issue with
7571 * the old implementation, matchsets containing only the RSSI attribute
7572 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7573 * RSSI for all matchsets, rather than their own matchset for reporting
7574 * all APs with a strong RSSI. This is needed to be compatible with
7575 * older userspace that treated a matchset with only the RSSI as the
7576 * global RSSI for all other matchsets - if there are other matchsets.
7577 */
7578 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7579 nla_for_each_nested(attr,
7580 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7581 tmp) {
7582 struct nlattr *rssi;
7583
7584 err = nla_parse_nested(tb,
7585 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7586 attr, nl80211_match_policy,
7587 NULL);
7588 if (err)
7589 return ERR_PTR(err);
7590
7591 /* SSID and BSSID are mutually exclusive */
7592 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7593 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7594 return ERR_PTR(-EINVAL);
7595
7596 /* add other standalone attributes here */
7597 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7598 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7599 n_match_sets++;
7600 continue;
7601 }
7602 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7603 if (rssi)
7604 default_match_rssi = nla_get_s32(rssi);
7605 }
7606 }
7607
7608 /* However, if there's no other matchset, add the RSSI one */
7609 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7610 n_match_sets = 1;
7611
7612 if (n_match_sets > max_match_sets)
7613 return ERR_PTR(-EINVAL);
7614
7615 if (attrs[NL80211_ATTR_IE])
7616 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7617 else
7618 ie_len = 0;
7619
7620 if (ie_len > wiphy->max_sched_scan_ie_len)
7621 return ERR_PTR(-EINVAL);
7622
7623 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7624 /*
7625 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7626 * each scan plan already specifies its own interval
7627 */
7628 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7629 return ERR_PTR(-EINVAL);
7630
7631 nla_for_each_nested(attr,
7632 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7633 n_plans++;
7634 } else {
7635 /*
7636 * The scan interval attribute is kept for backward
7637 * compatibility. If no scan plans are specified and sched scan
7638 * interval is specified, one scan plan will be set with this
7639 * scan interval and infinite number of iterations.
7640 */
7641 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7642 return ERR_PTR(-EINVAL);
7643
7644 n_plans = 1;
7645 }
7646
7647 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7648 return ERR_PTR(-EINVAL);
7649
7650 if (!wiphy_ext_feature_isset(
7651 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7652 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7653 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7654 return ERR_PTR(-EINVAL);
7655
7656 request = kzalloc(sizeof(*request)
7657 + sizeof(*request->ssids) * n_ssids
7658 + sizeof(*request->match_sets) * n_match_sets
7659 + sizeof(*request->scan_plans) * n_plans
7660 + sizeof(*request->channels) * n_channels
7661 + ie_len, GFP_KERNEL);
7662 if (!request)
7663 return ERR_PTR(-ENOMEM);
7664
7665 if (n_ssids)
7666 request->ssids = (void *)&request->channels[n_channels];
7667 request->n_ssids = n_ssids;
7668 if (ie_len) {
7669 if (n_ssids)
7670 request->ie = (void *)(request->ssids + n_ssids);
7671 else
7672 request->ie = (void *)(request->channels + n_channels);
7673 }
7674
7675 if (n_match_sets) {
7676 if (request->ie)
7677 request->match_sets = (void *)(request->ie + ie_len);
7678 else if (n_ssids)
7679 request->match_sets =
7680 (void *)(request->ssids + n_ssids);
7681 else
7682 request->match_sets =
7683 (void *)(request->channels + n_channels);
7684 }
7685 request->n_match_sets = n_match_sets;
7686
7687 if (n_match_sets)
7688 request->scan_plans = (void *)(request->match_sets +
7689 n_match_sets);
7690 else if (request->ie)
7691 request->scan_plans = (void *)(request->ie + ie_len);
7692 else if (n_ssids)
7693 request->scan_plans = (void *)(request->ssids + n_ssids);
7694 else
7695 request->scan_plans = (void *)(request->channels + n_channels);
7696
7697 request->n_scan_plans = n_plans;
7698
7699 i = 0;
7700 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7701 /* user specified, bail out if channel not found */
7702 nla_for_each_nested(attr,
7703 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7704 tmp) {
7705 struct ieee80211_channel *chan;
7706
7707 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7708
7709 if (!chan) {
7710 err = -EINVAL;
7711 goto out_free;
7712 }
7713
7714 /* ignore disabled channels */
7715 if (chan->flags & IEEE80211_CHAN_DISABLED)
7716 continue;
7717
7718 request->channels[i] = chan;
7719 i++;
7720 }
7721 } else {
7722 /* all channels */
7723 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7724 int j;
7725
7726 if (!wiphy->bands[band])
7727 continue;
7728 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7729 struct ieee80211_channel *chan;
7730
7731 chan = &wiphy->bands[band]->channels[j];
7732
7733 if (chan->flags & IEEE80211_CHAN_DISABLED)
7734 continue;
7735
7736 request->channels[i] = chan;
7737 i++;
7738 }
7739 }
7740 }
7741
7742 if (!i) {
7743 err = -EINVAL;
7744 goto out_free;
7745 }
7746
7747 request->n_channels = i;
7748
7749 i = 0;
7750 if (n_ssids) {
7751 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7752 tmp) {
7753 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7754 err = -EINVAL;
7755 goto out_free;
7756 }
7757 request->ssids[i].ssid_len = nla_len(attr);
7758 memcpy(request->ssids[i].ssid, nla_data(attr),
7759 nla_len(attr));
7760 i++;
7761 }
7762 }
7763
7764 i = 0;
7765 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7766 nla_for_each_nested(attr,
7767 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7768 tmp) {
7769 struct nlattr *ssid, *bssid, *rssi;
7770
7771 err = nla_parse_nested(tb,
7772 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7773 attr, nl80211_match_policy,
7774 NULL);
7775 if (err)
7776 goto out_free;
7777 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7778 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7779 if (ssid || bssid) {
7780 if (WARN_ON(i >= n_match_sets)) {
7781 /* this indicates a programming error,
7782 * the loop above should have verified
7783 * things properly
7784 */
7785 err = -EINVAL;
7786 goto out_free;
7787 }
7788
7789 if (ssid) {
7790 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7791 err = -EINVAL;
7792 goto out_free;
7793 }
7794 memcpy(request->match_sets[i].ssid.ssid,
7795 nla_data(ssid), nla_len(ssid));
7796 request->match_sets[i].ssid.ssid_len =
7797 nla_len(ssid);
7798 }
7799 if (bssid) {
7800 if (nla_len(bssid) != ETH_ALEN) {
7801 err = -EINVAL;
7802 goto out_free;
7803 }
7804 memcpy(request->match_sets[i].bssid,
7805 nla_data(bssid), ETH_ALEN);
7806 }
7807
7808 /* special attribute - old implementation w/a */
7809 request->match_sets[i].rssi_thold =
7810 default_match_rssi;
7811 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7812 if (rssi)
7813 request->match_sets[i].rssi_thold =
7814 nla_get_s32(rssi);
7815 }
7816 i++;
7817 }
7818
7819 /* there was no other matchset, so the RSSI one is alone */
7820 if (i == 0 && n_match_sets)
7821 request->match_sets[0].rssi_thold = default_match_rssi;
7822
7823 request->min_rssi_thold = INT_MAX;
7824 for (i = 0; i < n_match_sets; i++)
7825 request->min_rssi_thold =
7826 min(request->match_sets[i].rssi_thold,
7827 request->min_rssi_thold);
7828 } else {
7829 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7830 }
7831
7832 if (ie_len) {
7833 request->ie_len = ie_len;
7834 memcpy((void *)request->ie,
7835 nla_data(attrs[NL80211_ATTR_IE]),
7836 request->ie_len);
7837 }
7838
7839 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7840 if (err)
7841 goto out_free;
7842
7843 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7844 request->delay =
7845 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7846
7847 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7848 request->relative_rssi = nla_get_s8(
7849 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7850 request->relative_rssi_set = true;
7851 }
7852
7853 if (request->relative_rssi_set &&
7854 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7855 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7856
7857 rssi_adjust = nla_data(
7858 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7859 request->rssi_adjust.band = rssi_adjust->band;
7860 request->rssi_adjust.delta = rssi_adjust->delta;
7861 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7862 err = -EINVAL;
7863 goto out_free;
7864 }
7865 }
7866
7867 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7868 if (err)
7869 goto out_free;
7870
7871 request->scan_start = jiffies;
7872
7873 return request;
7874
7875 out_free:
7876 kfree(request);
7877 return ERR_PTR(err);
7878 }
7879
7880 static int nl80211_start_sched_scan(struct sk_buff *skb,
7881 struct genl_info *info)
7882 {
7883 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7884 struct net_device *dev = info->user_ptr[1];
7885 struct wireless_dev *wdev = dev->ieee80211_ptr;
7886 struct cfg80211_sched_scan_request *sched_scan_req;
7887 bool want_multi;
7888 int err;
7889
7890 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7891 return -EOPNOTSUPP;
7892
7893 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7894 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7895 if (err)
7896 return err;
7897
7898 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7899 info->attrs,
7900 rdev->wiphy.max_match_sets);
7901
7902 err = PTR_ERR_OR_ZERO(sched_scan_req);
7903 if (err)
7904 goto out_err;
7905
7906 /* leave request id zero for legacy request
7907 * or if driver does not support multi-scheduled scan
7908 */
7909 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7910 while (!sched_scan_req->reqid)
7911 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
7912 }
7913
7914 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7915 if (err)
7916 goto out_free;
7917
7918 sched_scan_req->dev = dev;
7919 sched_scan_req->wiphy = &rdev->wiphy;
7920
7921 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7922 sched_scan_req->owner_nlportid = info->snd_portid;
7923
7924 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7925
7926 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7927 return 0;
7928
7929 out_free:
7930 kfree(sched_scan_req);
7931 out_err:
7932 return err;
7933 }
7934
7935 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7936 struct genl_info *info)
7937 {
7938 struct cfg80211_sched_scan_request *req;
7939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7940 u64 cookie;
7941
7942 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7943 return -EOPNOTSUPP;
7944
7945 if (info->attrs[NL80211_ATTR_COOKIE]) {
7946 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7947 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7948 }
7949
7950 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7951 struct cfg80211_sched_scan_request,
7952 list);
7953 if (!req || req->reqid ||
7954 (req->owner_nlportid &&
7955 req->owner_nlportid != info->snd_portid))
7956 return -ENOENT;
7957
7958 return cfg80211_stop_sched_scan_req(rdev, req, false);
7959 }
7960
7961 static int nl80211_start_radar_detection(struct sk_buff *skb,
7962 struct genl_info *info)
7963 {
7964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7965 struct net_device *dev = info->user_ptr[1];
7966 struct wireless_dev *wdev = dev->ieee80211_ptr;
7967 struct wiphy *wiphy = wdev->wiphy;
7968 struct cfg80211_chan_def chandef;
7969 enum nl80211_dfs_regions dfs_region;
7970 unsigned int cac_time_ms;
7971 int err;
7972
7973 dfs_region = reg_get_dfs_region(wiphy);
7974 if (dfs_region == NL80211_DFS_UNSET)
7975 return -EINVAL;
7976
7977 err = nl80211_parse_chandef(rdev, info, &chandef);
7978 if (err)
7979 return err;
7980
7981 if (netif_carrier_ok(dev))
7982 return -EBUSY;
7983
7984 if (wdev->cac_started)
7985 return -EBUSY;
7986
7987 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7988 if (err < 0)
7989 return err;
7990
7991 if (err == 0)
7992 return -EINVAL;
7993
7994 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7995 return -EINVAL;
7996
7997 /* CAC start is offloaded to HW and can't be started manually */
7998 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7999 return -EOPNOTSUPP;
8000
8001 if (!rdev->ops->start_radar_detection)
8002 return -EOPNOTSUPP;
8003
8004 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8005 if (WARN_ON(!cac_time_ms))
8006 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8007
8008 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8009 if (!err) {
8010 wdev->chandef = chandef;
8011 wdev->cac_started = true;
8012 wdev->cac_start_time = jiffies;
8013 wdev->cac_time_ms = cac_time_ms;
8014 }
8015 return err;
8016 }
8017
8018 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8019 struct genl_info *info)
8020 {
8021 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8022 struct net_device *dev = info->user_ptr[1];
8023 struct wireless_dev *wdev = dev->ieee80211_ptr;
8024 struct wiphy *wiphy = wdev->wiphy;
8025 struct cfg80211_chan_def chandef;
8026 enum nl80211_dfs_regions dfs_region;
8027 int err;
8028
8029 dfs_region = reg_get_dfs_region(wiphy);
8030 if (dfs_region == NL80211_DFS_UNSET) {
8031 GENL_SET_ERR_MSG(info,
8032 "DFS Region is not set. Unexpected Radar indication");
8033 return -EINVAL;
8034 }
8035
8036 err = nl80211_parse_chandef(rdev, info, &chandef);
8037 if (err) {
8038 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8039 return err;
8040 }
8041
8042 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8043 if (err < 0) {
8044 GENL_SET_ERR_MSG(info, "chandef is invalid");
8045 return err;
8046 }
8047
8048 if (err == 0) {
8049 GENL_SET_ERR_MSG(info,
8050 "Unexpected Radar indication for chandef/iftype");
8051 return -EINVAL;
8052 }
8053
8054 /* Do not process this notification if radar is already detected
8055 * by kernel on this channel, and return success.
8056 */
8057 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8058 return 0;
8059
8060 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8061
8062 cfg80211_sched_dfs_chan_update(rdev);
8063
8064 memcpy(&rdev->radar_chandef, &chandef, sizeof(chandef));
8065
8066 /* Propagate this notification to other radios as well */
8067 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8068
8069 return 0;
8070 }
8071
8072 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8073 {
8074 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8075 struct net_device *dev = info->user_ptr[1];
8076 struct wireless_dev *wdev = dev->ieee80211_ptr;
8077 struct cfg80211_csa_settings params;
8078 /* csa_attrs is defined static to avoid waste of stack size - this
8079 * function is called under RTNL lock, so this should not be a problem.
8080 */
8081 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8082 int err;
8083 bool need_new_beacon = false;
8084 bool need_handle_dfs_flag = true;
8085 int len, i;
8086 u32 cs_count;
8087
8088 if (!rdev->ops->channel_switch ||
8089 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8090 return -EOPNOTSUPP;
8091
8092 switch (dev->ieee80211_ptr->iftype) {
8093 case NL80211_IFTYPE_AP:
8094 case NL80211_IFTYPE_P2P_GO:
8095 need_new_beacon = true;
8096 /* For all modes except AP the handle_dfs flag needs to be
8097 * supplied to tell the kernel that userspace will handle radar
8098 * events when they happen. Otherwise a switch to a channel
8099 * requiring DFS will be rejected.
8100 */
8101 need_handle_dfs_flag = false;
8102
8103 /* useless if AP is not running */
8104 if (!wdev->beacon_interval)
8105 return -ENOTCONN;
8106 break;
8107 case NL80211_IFTYPE_ADHOC:
8108 if (!wdev->ssid_len)
8109 return -ENOTCONN;
8110 break;
8111 case NL80211_IFTYPE_MESH_POINT:
8112 if (!wdev->mesh_id_len)
8113 return -ENOTCONN;
8114 break;
8115 default:
8116 return -EOPNOTSUPP;
8117 }
8118
8119 memset(&params, 0, sizeof(params));
8120 params.beacon_csa.ftm_responder = -1;
8121
8122 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8123 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8124 return -EINVAL;
8125
8126 /* only important for AP, IBSS and mesh create IEs internally */
8127 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8128 return -EINVAL;
8129
8130 /* Even though the attribute is u32, the specification says
8131 * u8, so let's make sure we don't overflow.
8132 */
8133 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8134 if (cs_count > 255)
8135 return -EINVAL;
8136
8137 params.count = cs_count;
8138
8139 if (!need_new_beacon)
8140 goto skip_beacons;
8141
8142 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8143 if (err)
8144 return err;
8145
8146 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
8147 info->attrs[NL80211_ATTR_CSA_IES],
8148 nl80211_policy, info->extack);
8149 if (err)
8150 return err;
8151
8152 err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8153 if (err)
8154 return err;
8155
8156 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8157 return -EINVAL;
8158
8159 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8160 if (!len || (len % sizeof(u16)))
8161 return -EINVAL;
8162
8163 params.n_counter_offsets_beacon = len / sizeof(u16);
8164 if (rdev->wiphy.max_num_csa_counters &&
8165 (params.n_counter_offsets_beacon >
8166 rdev->wiphy.max_num_csa_counters))
8167 return -EINVAL;
8168
8169 params.counter_offsets_beacon =
8170 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8171
8172 /* sanity checks - counters should fit and be the same */
8173 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8174 u16 offset = params.counter_offsets_beacon[i];
8175
8176 if (offset >= params.beacon_csa.tail_len)
8177 return -EINVAL;
8178
8179 if (params.beacon_csa.tail[offset] != params.count)
8180 return -EINVAL;
8181 }
8182
8183 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8184 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8185 if (!len || (len % sizeof(u16)))
8186 return -EINVAL;
8187
8188 params.n_counter_offsets_presp = len / sizeof(u16);
8189 if (rdev->wiphy.max_num_csa_counters &&
8190 (params.n_counter_offsets_presp >
8191 rdev->wiphy.max_num_csa_counters))
8192 return -EINVAL;
8193
8194 params.counter_offsets_presp =
8195 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8196
8197 /* sanity checks - counters should fit and be the same */
8198 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8199 u16 offset = params.counter_offsets_presp[i];
8200
8201 if (offset >= params.beacon_csa.probe_resp_len)
8202 return -EINVAL;
8203
8204 if (params.beacon_csa.probe_resp[offset] !=
8205 params.count)
8206 return -EINVAL;
8207 }
8208 }
8209
8210 skip_beacons:
8211 err = nl80211_parse_chandef(rdev, info, &params.chandef);
8212 if (err)
8213 return err;
8214
8215 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8216 wdev->iftype))
8217 return -EINVAL;
8218
8219 err = cfg80211_chandef_dfs_required(wdev->wiphy,
8220 &params.chandef,
8221 wdev->iftype);
8222 if (err < 0)
8223 return err;
8224
8225 if (err > 0) {
8226 params.radar_required = true;
8227 if (need_handle_dfs_flag &&
8228 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8229 return -EINVAL;
8230 }
8231 }
8232
8233 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8234 params.block_tx = true;
8235
8236 wdev_lock(wdev);
8237 err = rdev_channel_switch(rdev, dev, &params);
8238 wdev_unlock(wdev);
8239
8240 return err;
8241 }
8242
8243 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8244 u32 seq, int flags,
8245 struct cfg80211_registered_device *rdev,
8246 struct wireless_dev *wdev,
8247 struct cfg80211_internal_bss *intbss)
8248 {
8249 struct cfg80211_bss *res = &intbss->pub;
8250 const struct cfg80211_bss_ies *ies;
8251 void *hdr;
8252 struct nlattr *bss;
8253
8254 ASSERT_WDEV_LOCK(wdev);
8255
8256 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8257 NL80211_CMD_NEW_SCAN_RESULTS);
8258 if (!hdr)
8259 return -1;
8260
8261 genl_dump_check_consistent(cb, hdr);
8262
8263 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8264 goto nla_put_failure;
8265 if (wdev->netdev &&
8266 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8267 goto nla_put_failure;
8268 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8269 NL80211_ATTR_PAD))
8270 goto nla_put_failure;
8271
8272 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
8273 if (!bss)
8274 goto nla_put_failure;
8275 if ((!is_zero_ether_addr(res->bssid) &&
8276 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8277 goto nla_put_failure;
8278
8279 rcu_read_lock();
8280 /* indicate whether we have probe response data or not */
8281 if (rcu_access_pointer(res->proberesp_ies) &&
8282 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8283 goto fail_unlock_rcu;
8284
8285 /* this pointer prefers to be pointed to probe response data
8286 * but is always valid
8287 */
8288 ies = rcu_dereference(res->ies);
8289 if (ies) {
8290 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8291 NL80211_BSS_PAD))
8292 goto fail_unlock_rcu;
8293 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8294 ies->len, ies->data))
8295 goto fail_unlock_rcu;
8296 }
8297
8298 /* and this pointer is always (unless driver didn't know) beacon data */
8299 ies = rcu_dereference(res->beacon_ies);
8300 if (ies && ies->from_beacon) {
8301 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8302 NL80211_BSS_PAD))
8303 goto fail_unlock_rcu;
8304 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8305 ies->len, ies->data))
8306 goto fail_unlock_rcu;
8307 }
8308 rcu_read_unlock();
8309
8310 if (res->beacon_interval &&
8311 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8312 goto nla_put_failure;
8313 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8314 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8315 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8316 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8317 jiffies_to_msecs(jiffies - intbss->ts)))
8318 goto nla_put_failure;
8319
8320 if (intbss->parent_tsf &&
8321 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8322 intbss->parent_tsf, NL80211_BSS_PAD) ||
8323 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8324 intbss->parent_bssid)))
8325 goto nla_put_failure;
8326
8327 if (intbss->ts_boottime &&
8328 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8329 intbss->ts_boottime, NL80211_BSS_PAD))
8330 goto nla_put_failure;
8331
8332 if (!nl80211_put_signal(msg, intbss->pub.chains,
8333 intbss->pub.chain_signal,
8334 NL80211_BSS_CHAIN_SIGNAL))
8335 goto nla_put_failure;
8336
8337 switch (rdev->wiphy.signal_type) {
8338 case CFG80211_SIGNAL_TYPE_MBM:
8339 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8340 goto nla_put_failure;
8341 break;
8342 case CFG80211_SIGNAL_TYPE_UNSPEC:
8343 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8344 goto nla_put_failure;
8345 break;
8346 default:
8347 break;
8348 }
8349
8350 switch (wdev->iftype) {
8351 case NL80211_IFTYPE_P2P_CLIENT:
8352 case NL80211_IFTYPE_STATION:
8353 if (intbss == wdev->current_bss &&
8354 nla_put_u32(msg, NL80211_BSS_STATUS,
8355 NL80211_BSS_STATUS_ASSOCIATED))
8356 goto nla_put_failure;
8357 break;
8358 case NL80211_IFTYPE_ADHOC:
8359 if (intbss == wdev->current_bss &&
8360 nla_put_u32(msg, NL80211_BSS_STATUS,
8361 NL80211_BSS_STATUS_IBSS_JOINED))
8362 goto nla_put_failure;
8363 break;
8364 default:
8365 break;
8366 }
8367
8368 nla_nest_end(msg, bss);
8369
8370 genlmsg_end(msg, hdr);
8371 return 0;
8372
8373 fail_unlock_rcu:
8374 rcu_read_unlock();
8375 nla_put_failure:
8376 genlmsg_cancel(msg, hdr);
8377 return -EMSGSIZE;
8378 }
8379
8380 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8381 {
8382 struct cfg80211_registered_device *rdev;
8383 struct cfg80211_internal_bss *scan;
8384 struct wireless_dev *wdev;
8385 int start = cb->args[2], idx = 0;
8386 int err;
8387
8388 rtnl_lock();
8389 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8390 if (err) {
8391 rtnl_unlock();
8392 return err;
8393 }
8394
8395 wdev_lock(wdev);
8396 spin_lock_bh(&rdev->bss_lock);
8397
8398 /*
8399 * dump_scan will be called multiple times to break up the scan results
8400 * into multiple messages. It is unlikely that any more bss-es will be
8401 * expired after the first call, so only call only call this on the
8402 * first dump_scan invocation.
8403 */
8404 if (start == 0)
8405 cfg80211_bss_expire(rdev);
8406
8407 cb->seq = rdev->bss_generation;
8408
8409 list_for_each_entry(scan, &rdev->bss_list, list) {
8410 if (++idx <= start)
8411 continue;
8412 if (nl80211_send_bss(skb, cb,
8413 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8414 rdev, wdev, scan) < 0) {
8415 idx--;
8416 break;
8417 }
8418 }
8419
8420 spin_unlock_bh(&rdev->bss_lock);
8421 wdev_unlock(wdev);
8422
8423 cb->args[2] = idx;
8424 rtnl_unlock();
8425
8426 return skb->len;
8427 }
8428
8429 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8430 int flags, struct net_device *dev,
8431 bool allow_radio_stats,
8432 struct survey_info *survey)
8433 {
8434 void *hdr;
8435 struct nlattr *infoattr;
8436
8437 /* skip radio stats if userspace didn't request them */
8438 if (!survey->channel && !allow_radio_stats)
8439 return 0;
8440
8441 hdr = nl80211hdr_put(msg, portid, seq, flags,
8442 NL80211_CMD_NEW_SURVEY_RESULTS);
8443 if (!hdr)
8444 return -ENOMEM;
8445
8446 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8447 goto nla_put_failure;
8448
8449 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8450 if (!infoattr)
8451 goto nla_put_failure;
8452
8453 if (survey->channel &&
8454 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8455 survey->channel->center_freq))
8456 goto nla_put_failure;
8457
8458 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8459 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8460 goto nla_put_failure;
8461 if ((survey->filled & SURVEY_INFO_IN_USE) &&
8462 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8463 goto nla_put_failure;
8464 if ((survey->filled & SURVEY_INFO_TIME) &&
8465 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8466 survey->time, NL80211_SURVEY_INFO_PAD))
8467 goto nla_put_failure;
8468 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8469 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8470 survey->time_busy, NL80211_SURVEY_INFO_PAD))
8471 goto nla_put_failure;
8472 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8473 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8474 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8475 goto nla_put_failure;
8476 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8477 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8478 survey->time_rx, NL80211_SURVEY_INFO_PAD))
8479 goto nla_put_failure;
8480 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8481 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8482 survey->time_tx, NL80211_SURVEY_INFO_PAD))
8483 goto nla_put_failure;
8484 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8485 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8486 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8487 goto nla_put_failure;
8488
8489 nla_nest_end(msg, infoattr);
8490
8491 genlmsg_end(msg, hdr);
8492 return 0;
8493
8494 nla_put_failure:
8495 genlmsg_cancel(msg, hdr);
8496 return -EMSGSIZE;
8497 }
8498
8499 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8500 {
8501 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8502 struct survey_info survey;
8503 struct cfg80211_registered_device *rdev;
8504 struct wireless_dev *wdev;
8505 int survey_idx = cb->args[2];
8506 int res;
8507 bool radio_stats;
8508
8509 rtnl_lock();
8510 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8511 if (res)
8512 goto out_err;
8513
8514 /* prepare_wdev_dump parsed the attributes */
8515 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8516
8517 if (!wdev->netdev) {
8518 res = -EINVAL;
8519 goto out_err;
8520 }
8521
8522 if (!rdev->ops->dump_survey) {
8523 res = -EOPNOTSUPP;
8524 goto out_err;
8525 }
8526
8527 while (1) {
8528 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8529 if (res == -ENOENT)
8530 break;
8531 if (res)
8532 goto out_err;
8533
8534 /* don't send disabled channels, but do send non-channel data */
8535 if (survey.channel &&
8536 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8537 survey_idx++;
8538 continue;
8539 }
8540
8541 if (nl80211_send_survey(skb,
8542 NETLINK_CB(cb->skb).portid,
8543 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8544 wdev->netdev, radio_stats, &survey) < 0)
8545 goto out;
8546 survey_idx++;
8547 }
8548
8549 out:
8550 cb->args[2] = survey_idx;
8551 res = skb->len;
8552 out_err:
8553 rtnl_unlock();
8554 return res;
8555 }
8556
8557 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8558 {
8559 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8560 NL80211_WPA_VERSION_2));
8561 }
8562
8563 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8564 {
8565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8566 struct net_device *dev = info->user_ptr[1];
8567 struct ieee80211_channel *chan;
8568 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8569 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8570 enum nl80211_auth_type auth_type;
8571 struct key_parse key;
8572 bool local_state_change;
8573
8574 if (!info->attrs[NL80211_ATTR_MAC])
8575 return -EINVAL;
8576
8577 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8578 return -EINVAL;
8579
8580 if (!info->attrs[NL80211_ATTR_SSID])
8581 return -EINVAL;
8582
8583 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8584 return -EINVAL;
8585
8586 err = nl80211_parse_key(info, &key);
8587 if (err)
8588 return err;
8589
8590 if (key.idx >= 0) {
8591 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8592 return -EINVAL;
8593 if (!key.p.key || !key.p.key_len)
8594 return -EINVAL;
8595 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8596 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8597 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8598 key.p.key_len != WLAN_KEY_LEN_WEP104))
8599 return -EINVAL;
8600 if (key.idx > 3)
8601 return -EINVAL;
8602 } else {
8603 key.p.key_len = 0;
8604 key.p.key = NULL;
8605 }
8606
8607 if (key.idx >= 0) {
8608 int i;
8609 bool ok = false;
8610
8611 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8612 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8613 ok = true;
8614 break;
8615 }
8616 }
8617 if (!ok)
8618 return -EINVAL;
8619 }
8620
8621 if (!rdev->ops->auth)
8622 return -EOPNOTSUPP;
8623
8624 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8625 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8626 return -EOPNOTSUPP;
8627
8628 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8629 chan = nl80211_get_valid_chan(&rdev->wiphy,
8630 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8631 if (!chan)
8632 return -EINVAL;
8633
8634 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8635 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8636
8637 if (info->attrs[NL80211_ATTR_IE]) {
8638 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8639 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8640 }
8641
8642 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8643 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8644 return -EINVAL;
8645
8646 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8647 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8648 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8649 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8650 !info->attrs[NL80211_ATTR_AUTH_DATA])
8651 return -EINVAL;
8652
8653 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8654 if (auth_type != NL80211_AUTHTYPE_SAE &&
8655 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8656 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8657 auth_type != NL80211_AUTHTYPE_FILS_PK)
8658 return -EINVAL;
8659 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8660 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8661 /* need to include at least Auth Transaction and Status Code */
8662 if (auth_data_len < 4)
8663 return -EINVAL;
8664 }
8665
8666 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8667
8668 /*
8669 * Since we no longer track auth state, ignore
8670 * requests to only change local state.
8671 */
8672 if (local_state_change)
8673 return 0;
8674
8675 wdev_lock(dev->ieee80211_ptr);
8676 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8677 ssid, ssid_len, ie, ie_len,
8678 key.p.key, key.p.key_len, key.idx,
8679 auth_data, auth_data_len);
8680 wdev_unlock(dev->ieee80211_ptr);
8681 return err;
8682 }
8683
8684 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8685 struct genl_info *info)
8686 {
8687 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8688 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8689 return -EINVAL;
8690 }
8691
8692 if (!rdev->ops->tx_control_port ||
8693 !wiphy_ext_feature_isset(&rdev->wiphy,
8694 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8695 return -EOPNOTSUPP;
8696
8697 return 0;
8698 }
8699
8700 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8701 struct genl_info *info,
8702 struct cfg80211_crypto_settings *settings,
8703 int cipher_limit)
8704 {
8705 memset(settings, 0, sizeof(*settings));
8706
8707 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8708
8709 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8710 u16 proto;
8711
8712 proto = nla_get_u16(
8713 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8714 settings->control_port_ethertype = cpu_to_be16(proto);
8715 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8716 proto != ETH_P_PAE)
8717 return -EINVAL;
8718 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8719 settings->control_port_no_encrypt = true;
8720 } else
8721 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8722
8723 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8724 int r = validate_pae_over_nl80211(rdev, info);
8725
8726 if (r < 0)
8727 return r;
8728
8729 settings->control_port_over_nl80211 = true;
8730 }
8731
8732 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8733 void *data;
8734 int len, i;
8735
8736 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8737 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8738 settings->n_ciphers_pairwise = len / sizeof(u32);
8739
8740 if (len % sizeof(u32))
8741 return -EINVAL;
8742
8743 if (settings->n_ciphers_pairwise > cipher_limit)
8744 return -EINVAL;
8745
8746 memcpy(settings->ciphers_pairwise, data, len);
8747
8748 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8749 if (!cfg80211_supported_cipher_suite(
8750 &rdev->wiphy,
8751 settings->ciphers_pairwise[i]))
8752 return -EINVAL;
8753 }
8754
8755 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8756 settings->cipher_group =
8757 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8758 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8759 settings->cipher_group))
8760 return -EINVAL;
8761 }
8762
8763 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8764 settings->wpa_versions =
8765 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8766 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8767 return -EINVAL;
8768 }
8769
8770 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8771 void *data;
8772 int len;
8773
8774 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8775 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8776 settings->n_akm_suites = len / sizeof(u32);
8777
8778 if (len % sizeof(u32))
8779 return -EINVAL;
8780
8781 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8782 return -EINVAL;
8783
8784 memcpy(settings->akm_suites, data, len);
8785 }
8786
8787 if (info->attrs[NL80211_ATTR_PMK]) {
8788 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8789 return -EINVAL;
8790 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8791 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8792 return -EINVAL;
8793 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8794 }
8795
8796 return 0;
8797 }
8798
8799 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8800 {
8801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8802 struct net_device *dev = info->user_ptr[1];
8803 struct ieee80211_channel *chan;
8804 struct cfg80211_assoc_request req = {};
8805 const u8 *bssid, *ssid;
8806 int err, ssid_len = 0;
8807
8808 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8809 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8810 return -EPERM;
8811
8812 if (!info->attrs[NL80211_ATTR_MAC] ||
8813 !info->attrs[NL80211_ATTR_SSID] ||
8814 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8815 return -EINVAL;
8816
8817 if (!rdev->ops->assoc)
8818 return -EOPNOTSUPP;
8819
8820 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8821 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8822 return -EOPNOTSUPP;
8823
8824 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8825
8826 chan = nl80211_get_valid_chan(&rdev->wiphy,
8827 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8828 if (!chan)
8829 return -EINVAL;
8830
8831 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8832 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8833
8834 if (info->attrs[NL80211_ATTR_IE]) {
8835 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8836 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8837 }
8838
8839 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8840 enum nl80211_mfp mfp =
8841 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8842 if (mfp == NL80211_MFP_REQUIRED)
8843 req.use_mfp = true;
8844 else if (mfp != NL80211_MFP_NO)
8845 return -EINVAL;
8846 }
8847
8848 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8849 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8850
8851 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8852 req.flags |= ASSOC_REQ_DISABLE_HT;
8853
8854 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8855 memcpy(&req.ht_capa_mask,
8856 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8857 sizeof(req.ht_capa_mask));
8858
8859 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8860 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8861 return -EINVAL;
8862 memcpy(&req.ht_capa,
8863 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8864 sizeof(req.ht_capa));
8865 }
8866
8867 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8868 req.flags |= ASSOC_REQ_DISABLE_VHT;
8869
8870 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8871 memcpy(&req.vht_capa_mask,
8872 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8873 sizeof(req.vht_capa_mask));
8874
8875 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8876 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8877 return -EINVAL;
8878 memcpy(&req.vht_capa,
8879 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8880 sizeof(req.vht_capa));
8881 }
8882
8883 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8884 if (!((rdev->wiphy.features &
8885 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8886 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8887 !wiphy_ext_feature_isset(&rdev->wiphy,
8888 NL80211_EXT_FEATURE_RRM))
8889 return -EINVAL;
8890 req.flags |= ASSOC_REQ_USE_RRM;
8891 }
8892
8893 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8894 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8895 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8896 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8897 return -EINVAL;
8898 req.fils_nonces =
8899 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8900 }
8901
8902 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8903 if (!err) {
8904 wdev_lock(dev->ieee80211_ptr);
8905
8906 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8907 ssid, ssid_len, &req);
8908
8909 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8910 dev->ieee80211_ptr->conn_owner_nlportid =
8911 info->snd_portid;
8912 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8913 bssid, ETH_ALEN);
8914 }
8915
8916 wdev_unlock(dev->ieee80211_ptr);
8917 }
8918
8919 return err;
8920 }
8921
8922 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8923 {
8924 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8925 struct net_device *dev = info->user_ptr[1];
8926 const u8 *ie = NULL, *bssid;
8927 int ie_len = 0, err;
8928 u16 reason_code;
8929 bool local_state_change;
8930
8931 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8932 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8933 return -EPERM;
8934
8935 if (!info->attrs[NL80211_ATTR_MAC])
8936 return -EINVAL;
8937
8938 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8939 return -EINVAL;
8940
8941 if (!rdev->ops->deauth)
8942 return -EOPNOTSUPP;
8943
8944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8945 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8946 return -EOPNOTSUPP;
8947
8948 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8949
8950 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8951 if (reason_code == 0) {
8952 /* Reason Code 0 is reserved */
8953 return -EINVAL;
8954 }
8955
8956 if (info->attrs[NL80211_ATTR_IE]) {
8957 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8958 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8959 }
8960
8961 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8962
8963 wdev_lock(dev->ieee80211_ptr);
8964 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8965 local_state_change);
8966 wdev_unlock(dev->ieee80211_ptr);
8967 return err;
8968 }
8969
8970 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8971 {
8972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8973 struct net_device *dev = info->user_ptr[1];
8974 const u8 *ie = NULL, *bssid;
8975 int ie_len = 0, err;
8976 u16 reason_code;
8977 bool local_state_change;
8978
8979 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8980 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8981 return -EPERM;
8982
8983 if (!info->attrs[NL80211_ATTR_MAC])
8984 return -EINVAL;
8985
8986 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8987 return -EINVAL;
8988
8989 if (!rdev->ops->disassoc)
8990 return -EOPNOTSUPP;
8991
8992 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8993 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8994 return -EOPNOTSUPP;
8995
8996 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8997
8998 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8999 if (reason_code == 0) {
9000 /* Reason Code 0 is reserved */
9001 return -EINVAL;
9002 }
9003
9004 if (info->attrs[NL80211_ATTR_IE]) {
9005 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9006 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9007 }
9008
9009 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9010
9011 wdev_lock(dev->ieee80211_ptr);
9012 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9013 local_state_change);
9014 wdev_unlock(dev->ieee80211_ptr);
9015 return err;
9016 }
9017
9018 static bool
9019 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9020 int mcast_rate[NUM_NL80211_BANDS],
9021 int rateval)
9022 {
9023 struct wiphy *wiphy = &rdev->wiphy;
9024 bool found = false;
9025 int band, i;
9026
9027 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9028 struct ieee80211_supported_band *sband;
9029
9030 sband = wiphy->bands[band];
9031 if (!sband)
9032 continue;
9033
9034 for (i = 0; i < sband->n_bitrates; i++) {
9035 if (sband->bitrates[i].bitrate == rateval) {
9036 mcast_rate[band] = i + 1;
9037 found = true;
9038 break;
9039 }
9040 }
9041 }
9042
9043 return found;
9044 }
9045
9046 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9047 {
9048 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9049 struct net_device *dev = info->user_ptr[1];
9050 struct cfg80211_ibss_params ibss;
9051 struct wiphy *wiphy;
9052 struct cfg80211_cached_keys *connkeys = NULL;
9053 int err;
9054
9055 memset(&ibss, 0, sizeof(ibss));
9056
9057 if (!info->attrs[NL80211_ATTR_SSID] ||
9058 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9059 return -EINVAL;
9060
9061 ibss.beacon_interval = 100;
9062
9063 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9064 ibss.beacon_interval =
9065 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9066
9067 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9068 ibss.beacon_interval);
9069 if (err)
9070 return err;
9071
9072 if (!rdev->ops->join_ibss)
9073 return -EOPNOTSUPP;
9074
9075 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9076 return -EOPNOTSUPP;
9077
9078 wiphy = &rdev->wiphy;
9079
9080 if (info->attrs[NL80211_ATTR_MAC]) {
9081 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9082
9083 if (!is_valid_ether_addr(ibss.bssid))
9084 return -EINVAL;
9085 }
9086 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9087 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9088
9089 if (info->attrs[NL80211_ATTR_IE]) {
9090 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9091 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9092 }
9093
9094 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9095 if (err)
9096 return err;
9097
9098 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9099 NL80211_IFTYPE_ADHOC))
9100 return -EINVAL;
9101
9102 switch (ibss.chandef.width) {
9103 case NL80211_CHAN_WIDTH_5:
9104 case NL80211_CHAN_WIDTH_10:
9105 case NL80211_CHAN_WIDTH_20_NOHT:
9106 break;
9107 case NL80211_CHAN_WIDTH_20:
9108 case NL80211_CHAN_WIDTH_40:
9109 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9110 return -EINVAL;
9111 break;
9112 case NL80211_CHAN_WIDTH_80:
9113 case NL80211_CHAN_WIDTH_80P80:
9114 case NL80211_CHAN_WIDTH_160:
9115 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9116 return -EINVAL;
9117 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9118 NL80211_EXT_FEATURE_VHT_IBSS))
9119 return -EINVAL;
9120 break;
9121 default:
9122 return -EINVAL;
9123 }
9124
9125 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9126 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9127
9128 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9129 u8 *rates =
9130 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9131 int n_rates =
9132 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9133 struct ieee80211_supported_band *sband =
9134 wiphy->bands[ibss.chandef.chan->band];
9135
9136 err = ieee80211_get_ratemask(sband, rates, n_rates,
9137 &ibss.basic_rates);
9138 if (err)
9139 return err;
9140 }
9141
9142 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9143 memcpy(&ibss.ht_capa_mask,
9144 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9145 sizeof(ibss.ht_capa_mask));
9146
9147 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9148 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9149 return -EINVAL;
9150 memcpy(&ibss.ht_capa,
9151 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9152 sizeof(ibss.ht_capa));
9153 }
9154
9155 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9156 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9157 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9158 return -EINVAL;
9159
9160 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9161 bool no_ht = false;
9162
9163 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9164 if (IS_ERR(connkeys))
9165 return PTR_ERR(connkeys);
9166
9167 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9168 no_ht) {
9169 kzfree(connkeys);
9170 return -EINVAL;
9171 }
9172 }
9173
9174 ibss.control_port =
9175 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9176
9177 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9178 int r = validate_pae_over_nl80211(rdev, info);
9179
9180 if (r < 0) {
9181 kzfree(connkeys);
9182 return r;
9183 }
9184
9185 ibss.control_port_over_nl80211 = true;
9186 }
9187
9188 ibss.userspace_handles_dfs =
9189 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9190
9191 wdev_lock(dev->ieee80211_ptr);
9192 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9193 if (err)
9194 kzfree(connkeys);
9195 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9196 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9197 wdev_unlock(dev->ieee80211_ptr);
9198
9199 return err;
9200 }
9201
9202 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9203 {
9204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9205 struct net_device *dev = info->user_ptr[1];
9206
9207 if (!rdev->ops->leave_ibss)
9208 return -EOPNOTSUPP;
9209
9210 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9211 return -EOPNOTSUPP;
9212
9213 return cfg80211_leave_ibss(rdev, dev, false);
9214 }
9215
9216 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9217 {
9218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9219 struct net_device *dev = info->user_ptr[1];
9220 int mcast_rate[NUM_NL80211_BANDS];
9221 u32 nla_rate;
9222 int err;
9223
9224 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9225 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9227 return -EOPNOTSUPP;
9228
9229 if (!rdev->ops->set_mcast_rate)
9230 return -EOPNOTSUPP;
9231
9232 memset(mcast_rate, 0, sizeof(mcast_rate));
9233
9234 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9235 return -EINVAL;
9236
9237 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9238 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9239 return -EINVAL;
9240
9241 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9242
9243 return err;
9244 }
9245
9246 static struct sk_buff *
9247 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9248 struct wireless_dev *wdev, int approxlen,
9249 u32 portid, u32 seq, enum nl80211_commands cmd,
9250 enum nl80211_attrs attr,
9251 const struct nl80211_vendor_cmd_info *info,
9252 gfp_t gfp)
9253 {
9254 struct sk_buff *skb;
9255 void *hdr;
9256 struct nlattr *data;
9257
9258 skb = nlmsg_new(approxlen + 100, gfp);
9259 if (!skb)
9260 return NULL;
9261
9262 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9263 if (!hdr) {
9264 kfree_skb(skb);
9265 return NULL;
9266 }
9267
9268 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9269 goto nla_put_failure;
9270
9271 if (info) {
9272 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9273 info->vendor_id))
9274 goto nla_put_failure;
9275 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9276 info->subcmd))
9277 goto nla_put_failure;
9278 }
9279
9280 if (wdev) {
9281 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9282 wdev_id(wdev), NL80211_ATTR_PAD))
9283 goto nla_put_failure;
9284 if (wdev->netdev &&
9285 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9286 wdev->netdev->ifindex))
9287 goto nla_put_failure;
9288 }
9289
9290 data = nla_nest_start(skb, attr);
9291 if (!data)
9292 goto nla_put_failure;
9293
9294 ((void **)skb->cb)[0] = rdev;
9295 ((void **)skb->cb)[1] = hdr;
9296 ((void **)skb->cb)[2] = data;
9297
9298 return skb;
9299
9300 nla_put_failure:
9301 kfree_skb(skb);
9302 return NULL;
9303 }
9304
9305 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9306 struct wireless_dev *wdev,
9307 enum nl80211_commands cmd,
9308 enum nl80211_attrs attr,
9309 unsigned int portid,
9310 int vendor_event_idx,
9311 int approxlen, gfp_t gfp)
9312 {
9313 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9314 const struct nl80211_vendor_cmd_info *info;
9315
9316 switch (cmd) {
9317 case NL80211_CMD_TESTMODE:
9318 if (WARN_ON(vendor_event_idx != -1))
9319 return NULL;
9320 info = NULL;
9321 break;
9322 case NL80211_CMD_VENDOR:
9323 if (WARN_ON(vendor_event_idx < 0 ||
9324 vendor_event_idx >= wiphy->n_vendor_events))
9325 return NULL;
9326 info = &wiphy->vendor_events[vendor_event_idx];
9327 break;
9328 default:
9329 WARN_ON(1);
9330 return NULL;
9331 }
9332
9333 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9334 cmd, attr, info, gfp);
9335 }
9336 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9337
9338 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9339 {
9340 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9341 void *hdr = ((void **)skb->cb)[1];
9342 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9343 struct nlattr *data = ((void **)skb->cb)[2];
9344 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9345
9346 /* clear CB data for netlink core to own from now on */
9347 memset(skb->cb, 0, sizeof(skb->cb));
9348
9349 nla_nest_end(skb, data);
9350 genlmsg_end(skb, hdr);
9351
9352 if (nlhdr->nlmsg_pid) {
9353 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9354 nlhdr->nlmsg_pid);
9355 } else {
9356 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9357 mcgrp = NL80211_MCGRP_VENDOR;
9358
9359 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9360 skb, 0, mcgrp, gfp);
9361 }
9362 }
9363 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9364
9365 #ifdef CONFIG_NL80211_TESTMODE
9366 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9367 {
9368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9369 struct wireless_dev *wdev =
9370 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9371 int err;
9372
9373 if (!rdev->ops->testmode_cmd)
9374 return -EOPNOTSUPP;
9375
9376 if (IS_ERR(wdev)) {
9377 err = PTR_ERR(wdev);
9378 if (err != -EINVAL)
9379 return err;
9380 wdev = NULL;
9381 } else if (wdev->wiphy != &rdev->wiphy) {
9382 return -EINVAL;
9383 }
9384
9385 if (!info->attrs[NL80211_ATTR_TESTDATA])
9386 return -EINVAL;
9387
9388 rdev->cur_cmd_info = info;
9389 err = rdev_testmode_cmd(rdev, wdev,
9390 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9391 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9392 rdev->cur_cmd_info = NULL;
9393
9394 return err;
9395 }
9396
9397 static int nl80211_testmode_dump(struct sk_buff *skb,
9398 struct netlink_callback *cb)
9399 {
9400 struct cfg80211_registered_device *rdev;
9401 int err;
9402 long phy_idx;
9403 void *data = NULL;
9404 int data_len = 0;
9405
9406 rtnl_lock();
9407
9408 if (cb->args[0]) {
9409 /*
9410 * 0 is a valid index, but not valid for args[0],
9411 * so we need to offset by 1.
9412 */
9413 phy_idx = cb->args[0] - 1;
9414
9415 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9416 if (!rdev) {
9417 err = -ENOENT;
9418 goto out_err;
9419 }
9420 } else {
9421 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9422
9423 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9424 attrbuf, nl80211_fam.maxattr,
9425 nl80211_policy, NULL);
9426 if (err)
9427 goto out_err;
9428
9429 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9430 if (IS_ERR(rdev)) {
9431 err = PTR_ERR(rdev);
9432 goto out_err;
9433 }
9434 phy_idx = rdev->wiphy_idx;
9435
9436 if (attrbuf[NL80211_ATTR_TESTDATA])
9437 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9438 }
9439
9440 if (cb->args[1]) {
9441 data = nla_data((void *)cb->args[1]);
9442 data_len = nla_len((void *)cb->args[1]);
9443 }
9444
9445 if (!rdev->ops->testmode_dump) {
9446 err = -EOPNOTSUPP;
9447 goto out_err;
9448 }
9449
9450 while (1) {
9451 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9452 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9453 NL80211_CMD_TESTMODE);
9454 struct nlattr *tmdata;
9455
9456 if (!hdr)
9457 break;
9458
9459 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9460 genlmsg_cancel(skb, hdr);
9461 break;
9462 }
9463
9464 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9465 if (!tmdata) {
9466 genlmsg_cancel(skb, hdr);
9467 break;
9468 }
9469 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9470 nla_nest_end(skb, tmdata);
9471
9472 if (err == -ENOBUFS || err == -ENOENT) {
9473 genlmsg_cancel(skb, hdr);
9474 break;
9475 } else if (err) {
9476 genlmsg_cancel(skb, hdr);
9477 goto out_err;
9478 }
9479
9480 genlmsg_end(skb, hdr);
9481 }
9482
9483 err = skb->len;
9484 /* see above */
9485 cb->args[0] = phy_idx + 1;
9486 out_err:
9487 rtnl_unlock();
9488 return err;
9489 }
9490 #endif
9491
9492 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9493 {
9494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9495 struct net_device *dev = info->user_ptr[1];
9496 struct cfg80211_connect_params connect;
9497 struct wiphy *wiphy;
9498 struct cfg80211_cached_keys *connkeys = NULL;
9499 int err;
9500
9501 memset(&connect, 0, sizeof(connect));
9502
9503 if (!info->attrs[NL80211_ATTR_SSID] ||
9504 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9505 return -EINVAL;
9506
9507 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9508 connect.auth_type =
9509 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9510 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9511 NL80211_CMD_CONNECT))
9512 return -EINVAL;
9513 } else
9514 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9515
9516 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9517
9518 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9519 !wiphy_ext_feature_isset(&rdev->wiphy,
9520 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9521 return -EINVAL;
9522 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9523
9524 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9525 NL80211_MAX_NR_CIPHER_SUITES);
9526 if (err)
9527 return err;
9528
9529 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9530 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9531 return -EOPNOTSUPP;
9532
9533 wiphy = &rdev->wiphy;
9534
9535 connect.bg_scan_period = -1;
9536 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9537 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9538 connect.bg_scan_period =
9539 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9540 }
9541
9542 if (info->attrs[NL80211_ATTR_MAC])
9543 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9544 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9545 connect.bssid_hint =
9546 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9547 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9548 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9549
9550 if (info->attrs[NL80211_ATTR_IE]) {
9551 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9552 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9553 }
9554
9555 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9556 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9557 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9558 !wiphy_ext_feature_isset(&rdev->wiphy,
9559 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9560 return -EOPNOTSUPP;
9561 } else {
9562 connect.mfp = NL80211_MFP_NO;
9563 }
9564
9565 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9566 connect.prev_bssid =
9567 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9568
9569 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9570 connect.channel = nl80211_get_valid_chan(
9571 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9572 if (!connect.channel)
9573 return -EINVAL;
9574 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9575 connect.channel_hint = nl80211_get_valid_chan(
9576 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9577 if (!connect.channel_hint)
9578 return -EINVAL;
9579 }
9580
9581 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9582 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9583 if (IS_ERR(connkeys))
9584 return PTR_ERR(connkeys);
9585 }
9586
9587 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9588 connect.flags |= ASSOC_REQ_DISABLE_HT;
9589
9590 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9591 memcpy(&connect.ht_capa_mask,
9592 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9593 sizeof(connect.ht_capa_mask));
9594
9595 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9596 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9597 kzfree(connkeys);
9598 return -EINVAL;
9599 }
9600 memcpy(&connect.ht_capa,
9601 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9602 sizeof(connect.ht_capa));
9603 }
9604
9605 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9606 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9607
9608 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9609 memcpy(&connect.vht_capa_mask,
9610 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9611 sizeof(connect.vht_capa_mask));
9612
9613 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9614 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9615 kzfree(connkeys);
9616 return -EINVAL;
9617 }
9618 memcpy(&connect.vht_capa,
9619 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9620 sizeof(connect.vht_capa));
9621 }
9622
9623 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9624 if (!((rdev->wiphy.features &
9625 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9626 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9627 !wiphy_ext_feature_isset(&rdev->wiphy,
9628 NL80211_EXT_FEATURE_RRM)) {
9629 kzfree(connkeys);
9630 return -EINVAL;
9631 }
9632 connect.flags |= ASSOC_REQ_USE_RRM;
9633 }
9634
9635 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9636 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9637 kzfree(connkeys);
9638 return -EOPNOTSUPP;
9639 }
9640
9641 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9642 /* bss selection makes no sense if bssid is set */
9643 if (connect.bssid) {
9644 kzfree(connkeys);
9645 return -EINVAL;
9646 }
9647
9648 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9649 wiphy, &connect.bss_select);
9650 if (err) {
9651 kzfree(connkeys);
9652 return err;
9653 }
9654 }
9655
9656 if (wiphy_ext_feature_isset(&rdev->wiphy,
9657 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9658 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9659 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9660 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9661 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9662 connect.fils_erp_username =
9663 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9664 connect.fils_erp_username_len =
9665 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9666 connect.fils_erp_realm =
9667 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9668 connect.fils_erp_realm_len =
9669 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9670 connect.fils_erp_next_seq_num =
9671 nla_get_u16(
9672 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9673 connect.fils_erp_rrk =
9674 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9675 connect.fils_erp_rrk_len =
9676 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9677 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9678 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9679 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9680 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9681 kzfree(connkeys);
9682 return -EINVAL;
9683 }
9684
9685 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9686 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9687 kzfree(connkeys);
9688 GENL_SET_ERR_MSG(info,
9689 "external auth requires connection ownership");
9690 return -EINVAL;
9691 }
9692 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9693 }
9694
9695 wdev_lock(dev->ieee80211_ptr);
9696
9697 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9698 connect.prev_bssid);
9699 if (err)
9700 kzfree(connkeys);
9701
9702 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9703 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9704 if (connect.bssid)
9705 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9706 connect.bssid, ETH_ALEN);
9707 else
9708 memset(dev->ieee80211_ptr->disconnect_bssid,
9709 0, ETH_ALEN);
9710 }
9711
9712 wdev_unlock(dev->ieee80211_ptr);
9713
9714 return err;
9715 }
9716
9717 static int nl80211_update_connect_params(struct sk_buff *skb,
9718 struct genl_info *info)
9719 {
9720 struct cfg80211_connect_params connect = {};
9721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9722 struct net_device *dev = info->user_ptr[1];
9723 struct wireless_dev *wdev = dev->ieee80211_ptr;
9724 bool fils_sk_offload;
9725 u32 auth_type;
9726 u32 changed = 0;
9727 int ret;
9728
9729 if (!rdev->ops->update_connect_params)
9730 return -EOPNOTSUPP;
9731
9732 if (info->attrs[NL80211_ATTR_IE]) {
9733 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9734 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9735 changed |= UPDATE_ASSOC_IES;
9736 }
9737
9738 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9739 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9740
9741 /*
9742 * when driver supports fils-sk offload all attributes must be
9743 * provided. So the else covers "fils-sk-not-all" and
9744 * "no-fils-sk-any".
9745 */
9746 if (fils_sk_offload &&
9747 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9748 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9749 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9750 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9751 connect.fils_erp_username =
9752 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9753 connect.fils_erp_username_len =
9754 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9755 connect.fils_erp_realm =
9756 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9757 connect.fils_erp_realm_len =
9758 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9759 connect.fils_erp_next_seq_num =
9760 nla_get_u16(
9761 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9762 connect.fils_erp_rrk =
9763 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9764 connect.fils_erp_rrk_len =
9765 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9766 changed |= UPDATE_FILS_ERP_INFO;
9767 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9768 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9769 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9770 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9771 return -EINVAL;
9772 }
9773
9774 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9775 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9776 if (!nl80211_valid_auth_type(rdev, auth_type,
9777 NL80211_CMD_CONNECT))
9778 return -EINVAL;
9779
9780 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9781 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9782 return -EINVAL;
9783
9784 connect.auth_type = auth_type;
9785 changed |= UPDATE_AUTH_TYPE;
9786 }
9787
9788 wdev_lock(dev->ieee80211_ptr);
9789 if (!wdev->current_bss)
9790 ret = -ENOLINK;
9791 else
9792 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9793 wdev_unlock(dev->ieee80211_ptr);
9794
9795 return ret;
9796 }
9797
9798 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9799 {
9800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9801 struct net_device *dev = info->user_ptr[1];
9802 u16 reason;
9803 int ret;
9804
9805 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9806 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9807 return -EPERM;
9808
9809 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9810 reason = WLAN_REASON_DEAUTH_LEAVING;
9811 else
9812 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9813
9814 if (reason == 0)
9815 return -EINVAL;
9816
9817 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9818 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9819 return -EOPNOTSUPP;
9820
9821 wdev_lock(dev->ieee80211_ptr);
9822 ret = cfg80211_disconnect(rdev, dev, reason, true);
9823 wdev_unlock(dev->ieee80211_ptr);
9824 return ret;
9825 }
9826
9827 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9828 {
9829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9830 struct net *net;
9831 int err;
9832
9833 if (info->attrs[NL80211_ATTR_PID]) {
9834 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9835
9836 net = get_net_ns_by_pid(pid);
9837 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9838 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9839
9840 net = get_net_ns_by_fd(fd);
9841 } else {
9842 return -EINVAL;
9843 }
9844
9845 if (IS_ERR(net))
9846 return PTR_ERR(net);
9847
9848 err = 0;
9849
9850 /* check if anything to do */
9851 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9852 err = cfg80211_switch_netns(rdev, net);
9853
9854 put_net(net);
9855 return err;
9856 }
9857
9858 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9859 {
9860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9861 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9862 struct cfg80211_pmksa *pmksa) = NULL;
9863 struct net_device *dev = info->user_ptr[1];
9864 struct cfg80211_pmksa pmksa;
9865
9866 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9867
9868 if (!info->attrs[NL80211_ATTR_PMKID])
9869 return -EINVAL;
9870
9871 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9872
9873 if (info->attrs[NL80211_ATTR_MAC]) {
9874 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9875 } else if (info->attrs[NL80211_ATTR_SSID] &&
9876 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9877 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9878 info->attrs[NL80211_ATTR_PMK])) {
9879 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9880 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9881 pmksa.cache_id =
9882 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9883 } else {
9884 return -EINVAL;
9885 }
9886 if (info->attrs[NL80211_ATTR_PMK]) {
9887 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9888 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9889 }
9890
9891 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9892 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
9893 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
9894 wiphy_ext_feature_isset(&rdev->wiphy,
9895 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
9896 return -EOPNOTSUPP;
9897
9898 switch (info->genlhdr->cmd) {
9899 case NL80211_CMD_SET_PMKSA:
9900 rdev_ops = rdev->ops->set_pmksa;
9901 break;
9902 case NL80211_CMD_DEL_PMKSA:
9903 rdev_ops = rdev->ops->del_pmksa;
9904 break;
9905 default:
9906 WARN_ON(1);
9907 break;
9908 }
9909
9910 if (!rdev_ops)
9911 return -EOPNOTSUPP;
9912
9913 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9914 }
9915
9916 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9917 {
9918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9919 struct net_device *dev = info->user_ptr[1];
9920
9921 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9923 return -EOPNOTSUPP;
9924
9925 if (!rdev->ops->flush_pmksa)
9926 return -EOPNOTSUPP;
9927
9928 return rdev_flush_pmksa(rdev, dev);
9929 }
9930
9931 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9932 {
9933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9934 struct net_device *dev = info->user_ptr[1];
9935 u8 action_code, dialog_token;
9936 u32 peer_capability = 0;
9937 u16 status_code;
9938 u8 *peer;
9939 bool initiator;
9940
9941 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9942 !rdev->ops->tdls_mgmt)
9943 return -EOPNOTSUPP;
9944
9945 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9946 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9947 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9948 !info->attrs[NL80211_ATTR_IE] ||
9949 !info->attrs[NL80211_ATTR_MAC])
9950 return -EINVAL;
9951
9952 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9953 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9954 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9955 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9956 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9957 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9958 peer_capability =
9959 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9960
9961 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9962 dialog_token, status_code, peer_capability,
9963 initiator,
9964 nla_data(info->attrs[NL80211_ATTR_IE]),
9965 nla_len(info->attrs[NL80211_ATTR_IE]));
9966 }
9967
9968 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9969 {
9970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9971 struct net_device *dev = info->user_ptr[1];
9972 enum nl80211_tdls_operation operation;
9973 u8 *peer;
9974
9975 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9976 !rdev->ops->tdls_oper)
9977 return -EOPNOTSUPP;
9978
9979 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9980 !info->attrs[NL80211_ATTR_MAC])
9981 return -EINVAL;
9982
9983 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9984 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9985
9986 return rdev_tdls_oper(rdev, dev, peer, operation);
9987 }
9988
9989 static int nl80211_remain_on_channel(struct sk_buff *skb,
9990 struct genl_info *info)
9991 {
9992 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9993 struct wireless_dev *wdev = info->user_ptr[1];
9994 struct cfg80211_chan_def chandef;
9995 const struct cfg80211_chan_def *compat_chandef;
9996 struct sk_buff *msg;
9997 void *hdr;
9998 u64 cookie;
9999 u32 duration;
10000 int err;
10001
10002 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10003 !info->attrs[NL80211_ATTR_DURATION])
10004 return -EINVAL;
10005
10006 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10007
10008 if (!rdev->ops->remain_on_channel ||
10009 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10010 return -EOPNOTSUPP;
10011
10012 /*
10013 * We should be on that channel for at least a minimum amount of
10014 * time (10ms) but no longer than the driver supports.
10015 */
10016 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10017 duration > rdev->wiphy.max_remain_on_channel_duration)
10018 return -EINVAL;
10019
10020 err = nl80211_parse_chandef(rdev, info, &chandef);
10021 if (err)
10022 return err;
10023
10024 wdev_lock(wdev);
10025 if (!cfg80211_off_channel_oper_allowed(wdev) &&
10026 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10027 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10028 &chandef);
10029 if (compat_chandef != &chandef) {
10030 wdev_unlock(wdev);
10031 return -EBUSY;
10032 }
10033 }
10034 wdev_unlock(wdev);
10035
10036 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10037 if (!msg)
10038 return -ENOMEM;
10039
10040 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10041 NL80211_CMD_REMAIN_ON_CHANNEL);
10042 if (!hdr) {
10043 err = -ENOBUFS;
10044 goto free_msg;
10045 }
10046
10047 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10048 duration, &cookie);
10049
10050 if (err)
10051 goto free_msg;
10052
10053 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10054 NL80211_ATTR_PAD))
10055 goto nla_put_failure;
10056
10057 genlmsg_end(msg, hdr);
10058
10059 return genlmsg_reply(msg, info);
10060
10061 nla_put_failure:
10062 err = -ENOBUFS;
10063 free_msg:
10064 nlmsg_free(msg);
10065 return err;
10066 }
10067
10068 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10069 struct genl_info *info)
10070 {
10071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10072 struct wireless_dev *wdev = info->user_ptr[1];
10073 u64 cookie;
10074
10075 if (!info->attrs[NL80211_ATTR_COOKIE])
10076 return -EINVAL;
10077
10078 if (!rdev->ops->cancel_remain_on_channel)
10079 return -EOPNOTSUPP;
10080
10081 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10082
10083 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10084 }
10085
10086 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10087 struct genl_info *info)
10088 {
10089 struct cfg80211_bitrate_mask mask;
10090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10091 struct net_device *dev = info->user_ptr[1];
10092 int err;
10093
10094 if (!rdev->ops->set_bitrate_mask)
10095 return -EOPNOTSUPP;
10096
10097 err = nl80211_parse_tx_bitrate_mask(info, &mask);
10098 if (err)
10099 return err;
10100
10101 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10102 }
10103
10104 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10105 {
10106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10107 struct wireless_dev *wdev = info->user_ptr[1];
10108 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10109
10110 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10111 return -EINVAL;
10112
10113 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10114 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10115
10116 switch (wdev->iftype) {
10117 case NL80211_IFTYPE_STATION:
10118 case NL80211_IFTYPE_ADHOC:
10119 case NL80211_IFTYPE_P2P_CLIENT:
10120 case NL80211_IFTYPE_AP:
10121 case NL80211_IFTYPE_AP_VLAN:
10122 case NL80211_IFTYPE_MESH_POINT:
10123 case NL80211_IFTYPE_P2P_GO:
10124 case NL80211_IFTYPE_P2P_DEVICE:
10125 break;
10126 case NL80211_IFTYPE_NAN:
10127 default:
10128 return -EOPNOTSUPP;
10129 }
10130
10131 /* not much point in registering if we can't reply */
10132 if (!rdev->ops->mgmt_tx)
10133 return -EOPNOTSUPP;
10134
10135 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10136 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10137 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10138 }
10139
10140 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10141 {
10142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10143 struct wireless_dev *wdev = info->user_ptr[1];
10144 struct cfg80211_chan_def chandef;
10145 int err;
10146 void *hdr = NULL;
10147 u64 cookie;
10148 struct sk_buff *msg = NULL;
10149 struct cfg80211_mgmt_tx_params params = {
10150 .dont_wait_for_ack =
10151 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10152 };
10153
10154 if (!info->attrs[NL80211_ATTR_FRAME])
10155 return -EINVAL;
10156
10157 if (!rdev->ops->mgmt_tx)
10158 return -EOPNOTSUPP;
10159
10160 switch (wdev->iftype) {
10161 case NL80211_IFTYPE_P2P_DEVICE:
10162 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10163 return -EINVAL;
10164 case NL80211_IFTYPE_STATION:
10165 case NL80211_IFTYPE_ADHOC:
10166 case NL80211_IFTYPE_P2P_CLIENT:
10167 case NL80211_IFTYPE_AP:
10168 case NL80211_IFTYPE_AP_VLAN:
10169 case NL80211_IFTYPE_MESH_POINT:
10170 case NL80211_IFTYPE_P2P_GO:
10171 break;
10172 case NL80211_IFTYPE_NAN:
10173 default:
10174 return -EOPNOTSUPP;
10175 }
10176
10177 if (info->attrs[NL80211_ATTR_DURATION]) {
10178 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10179 return -EINVAL;
10180 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10181
10182 /*
10183 * We should wait on the channel for at least a minimum amount
10184 * of time (10ms) but no longer than the driver supports.
10185 */
10186 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10187 params.wait > rdev->wiphy.max_remain_on_channel_duration)
10188 return -EINVAL;
10189 }
10190
10191 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10192
10193 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10194 return -EINVAL;
10195
10196 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10197
10198 /* get the channel if any has been specified, otherwise pass NULL to
10199 * the driver. The latter will use the current one
10200 */
10201 chandef.chan = NULL;
10202 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10203 err = nl80211_parse_chandef(rdev, info, &chandef);
10204 if (err)
10205 return err;
10206 }
10207
10208 if (!chandef.chan && params.offchan)
10209 return -EINVAL;
10210
10211 wdev_lock(wdev);
10212 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10213 wdev_unlock(wdev);
10214 return -EBUSY;
10215 }
10216 wdev_unlock(wdev);
10217
10218 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10219 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10220
10221 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10222 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10223 int i;
10224
10225 if (len % sizeof(u16))
10226 return -EINVAL;
10227
10228 params.n_csa_offsets = len / sizeof(u16);
10229 params.csa_offsets =
10230 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10231
10232 /* check that all the offsets fit the frame */
10233 for (i = 0; i < params.n_csa_offsets; i++) {
10234 if (params.csa_offsets[i] >= params.len)
10235 return -EINVAL;
10236 }
10237 }
10238
10239 if (!params.dont_wait_for_ack) {
10240 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10241 if (!msg)
10242 return -ENOMEM;
10243
10244 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10245 NL80211_CMD_FRAME);
10246 if (!hdr) {
10247 err = -ENOBUFS;
10248 goto free_msg;
10249 }
10250 }
10251
10252 params.chan = chandef.chan;
10253 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10254 if (err)
10255 goto free_msg;
10256
10257 if (msg) {
10258 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10259 NL80211_ATTR_PAD))
10260 goto nla_put_failure;
10261
10262 genlmsg_end(msg, hdr);
10263 return genlmsg_reply(msg, info);
10264 }
10265
10266 return 0;
10267
10268 nla_put_failure:
10269 err = -ENOBUFS;
10270 free_msg:
10271 nlmsg_free(msg);
10272 return err;
10273 }
10274
10275 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10276 {
10277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10278 struct wireless_dev *wdev = info->user_ptr[1];
10279 u64 cookie;
10280
10281 if (!info->attrs[NL80211_ATTR_COOKIE])
10282 return -EINVAL;
10283
10284 if (!rdev->ops->mgmt_tx_cancel_wait)
10285 return -EOPNOTSUPP;
10286
10287 switch (wdev->iftype) {
10288 case NL80211_IFTYPE_STATION:
10289 case NL80211_IFTYPE_ADHOC:
10290 case NL80211_IFTYPE_P2P_CLIENT:
10291 case NL80211_IFTYPE_AP:
10292 case NL80211_IFTYPE_AP_VLAN:
10293 case NL80211_IFTYPE_P2P_GO:
10294 case NL80211_IFTYPE_P2P_DEVICE:
10295 break;
10296 case NL80211_IFTYPE_NAN:
10297 default:
10298 return -EOPNOTSUPP;
10299 }
10300
10301 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10302
10303 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10304 }
10305
10306 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10307 {
10308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10309 struct wireless_dev *wdev;
10310 struct net_device *dev = info->user_ptr[1];
10311 u8 ps_state;
10312 bool state;
10313 int err;
10314
10315 if (!info->attrs[NL80211_ATTR_PS_STATE])
10316 return -EINVAL;
10317
10318 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10319
10320 wdev = dev->ieee80211_ptr;
10321
10322 if (!rdev->ops->set_power_mgmt)
10323 return -EOPNOTSUPP;
10324
10325 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10326
10327 if (state == wdev->ps)
10328 return 0;
10329
10330 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10331 if (!err)
10332 wdev->ps = state;
10333 return err;
10334 }
10335
10336 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10337 {
10338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10339 enum nl80211_ps_state ps_state;
10340 struct wireless_dev *wdev;
10341 struct net_device *dev = info->user_ptr[1];
10342 struct sk_buff *msg;
10343 void *hdr;
10344 int err;
10345
10346 wdev = dev->ieee80211_ptr;
10347
10348 if (!rdev->ops->set_power_mgmt)
10349 return -EOPNOTSUPP;
10350
10351 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10352 if (!msg)
10353 return -ENOMEM;
10354
10355 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10356 NL80211_CMD_GET_POWER_SAVE);
10357 if (!hdr) {
10358 err = -ENOBUFS;
10359 goto free_msg;
10360 }
10361
10362 if (wdev->ps)
10363 ps_state = NL80211_PS_ENABLED;
10364 else
10365 ps_state = NL80211_PS_DISABLED;
10366
10367 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10368 goto nla_put_failure;
10369
10370 genlmsg_end(msg, hdr);
10371 return genlmsg_reply(msg, info);
10372
10373 nla_put_failure:
10374 err = -ENOBUFS;
10375 free_msg:
10376 nlmsg_free(msg);
10377 return err;
10378 }
10379
10380 static const struct nla_policy
10381 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10382 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10383 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10384 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10385 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10386 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10387 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10388 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10389 };
10390
10391 static int nl80211_set_cqm_txe(struct genl_info *info,
10392 u32 rate, u32 pkts, u32 intvl)
10393 {
10394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10395 struct net_device *dev = info->user_ptr[1];
10396 struct wireless_dev *wdev = dev->ieee80211_ptr;
10397
10398 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10399 return -EINVAL;
10400
10401 if (!rdev->ops->set_cqm_txe_config)
10402 return -EOPNOTSUPP;
10403
10404 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10405 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10406 return -EOPNOTSUPP;
10407
10408 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10409 }
10410
10411 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10412 struct net_device *dev)
10413 {
10414 struct wireless_dev *wdev = dev->ieee80211_ptr;
10415 s32 last, low, high;
10416 u32 hyst;
10417 int i, n, low_index;
10418 int err;
10419
10420 /* RSSI reporting disabled? */
10421 if (!wdev->cqm_config)
10422 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10423
10424 /*
10425 * Obtain current RSSI value if possible, if not and no RSSI threshold
10426 * event has been received yet, we should receive an event after a
10427 * connection is established and enough beacons received to calculate
10428 * the average.
10429 */
10430 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10431 rdev->ops->get_station) {
10432 struct station_info sinfo = {};
10433 u8 *mac_addr;
10434
10435 mac_addr = wdev->current_bss->pub.bssid;
10436
10437 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10438 if (err)
10439 return err;
10440
10441 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10442 wdev->cqm_config->last_rssi_event_value =
10443 (s8) sinfo.rx_beacon_signal_avg;
10444 }
10445
10446 last = wdev->cqm_config->last_rssi_event_value;
10447 hyst = wdev->cqm_config->rssi_hyst;
10448 n = wdev->cqm_config->n_rssi_thresholds;
10449
10450 for (i = 0; i < n; i++)
10451 if (last < wdev->cqm_config->rssi_thresholds[i])
10452 break;
10453
10454 low_index = i - 1;
10455 if (low_index >= 0) {
10456 low_index = array_index_nospec(low_index, n);
10457 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10458 } else {
10459 low = S32_MIN;
10460 }
10461 if (i < n) {
10462 i = array_index_nospec(i, n);
10463 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10464 } else {
10465 high = S32_MAX;
10466 }
10467
10468 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10469 }
10470
10471 static int nl80211_set_cqm_rssi(struct genl_info *info,
10472 const s32 *thresholds, int n_thresholds,
10473 u32 hysteresis)
10474 {
10475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10476 struct net_device *dev = info->user_ptr[1];
10477 struct wireless_dev *wdev = dev->ieee80211_ptr;
10478 int i, err;
10479 s32 prev = S32_MIN;
10480
10481 /* Check all values negative and sorted */
10482 for (i = 0; i < n_thresholds; i++) {
10483 if (thresholds[i] > 0 || thresholds[i] <= prev)
10484 return -EINVAL;
10485
10486 prev = thresholds[i];
10487 }
10488
10489 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10490 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10491 return -EOPNOTSUPP;
10492
10493 wdev_lock(wdev);
10494 cfg80211_cqm_config_free(wdev);
10495 wdev_unlock(wdev);
10496
10497 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10498 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10499 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10500
10501 return rdev_set_cqm_rssi_config(rdev, dev,
10502 thresholds[0], hysteresis);
10503 }
10504
10505 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10506 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10507 return -EOPNOTSUPP;
10508
10509 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10510 n_thresholds = 0;
10511
10512 wdev_lock(wdev);
10513 if (n_thresholds) {
10514 struct cfg80211_cqm_config *cqm_config;
10515
10516 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10517 n_thresholds * sizeof(s32), GFP_KERNEL);
10518 if (!cqm_config) {
10519 err = -ENOMEM;
10520 goto unlock;
10521 }
10522
10523 cqm_config->rssi_hyst = hysteresis;
10524 cqm_config->n_rssi_thresholds = n_thresholds;
10525 memcpy(cqm_config->rssi_thresholds, thresholds,
10526 n_thresholds * sizeof(s32));
10527
10528 wdev->cqm_config = cqm_config;
10529 }
10530
10531 err = cfg80211_cqm_rssi_update(rdev, dev);
10532
10533 unlock:
10534 wdev_unlock(wdev);
10535
10536 return err;
10537 }
10538
10539 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10540 {
10541 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10542 struct nlattr *cqm;
10543 int err;
10544
10545 cqm = info->attrs[NL80211_ATTR_CQM];
10546 if (!cqm)
10547 return -EINVAL;
10548
10549 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10550 nl80211_attr_cqm_policy, info->extack);
10551 if (err)
10552 return err;
10553
10554 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10555 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10556 const s32 *thresholds =
10557 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10558 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10559 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10560
10561 if (len % 4)
10562 return -EINVAL;
10563
10564 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10565 hysteresis);
10566 }
10567
10568 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10569 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10570 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10571 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10572 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10573 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10574
10575 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10576 }
10577
10578 return -EINVAL;
10579 }
10580
10581 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10582 {
10583 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10584 struct net_device *dev = info->user_ptr[1];
10585 struct ocb_setup setup = {};
10586 int err;
10587
10588 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10589 if (err)
10590 return err;
10591
10592 return cfg80211_join_ocb(rdev, dev, &setup);
10593 }
10594
10595 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10596 {
10597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10598 struct net_device *dev = info->user_ptr[1];
10599
10600 return cfg80211_leave_ocb(rdev, dev);
10601 }
10602
10603 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10604 {
10605 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10606 struct net_device *dev = info->user_ptr[1];
10607 struct mesh_config cfg;
10608 struct mesh_setup setup;
10609 int err;
10610
10611 /* start with default */
10612 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10613 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10614
10615 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10616 /* and parse parameters if given */
10617 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10618 if (err)
10619 return err;
10620 }
10621
10622 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10623 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10624 return -EINVAL;
10625
10626 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10627 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10628
10629 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10630 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10631 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10632 return -EINVAL;
10633
10634 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10635 setup.beacon_interval =
10636 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10637
10638 err = cfg80211_validate_beacon_int(rdev,
10639 NL80211_IFTYPE_MESH_POINT,
10640 setup.beacon_interval);
10641 if (err)
10642 return err;
10643 }
10644
10645 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10646 setup.dtim_period =
10647 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10648 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10649 return -EINVAL;
10650 }
10651
10652 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10653 /* parse additional setup parameters if given */
10654 err = nl80211_parse_mesh_setup(info, &setup);
10655 if (err)
10656 return err;
10657 }
10658
10659 if (setup.user_mpm)
10660 cfg.auto_open_plinks = false;
10661
10662 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10663 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10664 if (err)
10665 return err;
10666 } else {
10667 /* __cfg80211_join_mesh() will sort it out */
10668 setup.chandef.chan = NULL;
10669 }
10670
10671 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10672 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10673 int n_rates =
10674 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10675 struct ieee80211_supported_band *sband;
10676
10677 if (!setup.chandef.chan)
10678 return -EINVAL;
10679
10680 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10681
10682 err = ieee80211_get_ratemask(sband, rates, n_rates,
10683 &setup.basic_rates);
10684 if (err)
10685 return err;
10686 }
10687
10688 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10689 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10690 if (err)
10691 return err;
10692
10693 if (!setup.chandef.chan)
10694 return -EINVAL;
10695
10696 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10697 &setup.beacon_rate);
10698 if (err)
10699 return err;
10700 }
10701
10702 setup.userspace_handles_dfs =
10703 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10704
10705 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10706 int r = validate_pae_over_nl80211(rdev, info);
10707
10708 if (r < 0)
10709 return r;
10710
10711 setup.control_port_over_nl80211 = true;
10712 }
10713
10714 wdev_lock(dev->ieee80211_ptr);
10715 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10716 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10717 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10718 wdev_unlock(dev->ieee80211_ptr);
10719
10720 return err;
10721 }
10722
10723 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10724 {
10725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10726 struct net_device *dev = info->user_ptr[1];
10727
10728 return cfg80211_leave_mesh(rdev, dev);
10729 }
10730
10731 #ifdef CONFIG_PM
10732 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10733 struct cfg80211_registered_device *rdev)
10734 {
10735 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10736 struct nlattr *nl_pats, *nl_pat;
10737 int i, pat_len;
10738
10739 if (!wowlan->n_patterns)
10740 return 0;
10741
10742 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10743 if (!nl_pats)
10744 return -ENOBUFS;
10745
10746 for (i = 0; i < wowlan->n_patterns; i++) {
10747 nl_pat = nla_nest_start(msg, i + 1);
10748 if (!nl_pat)
10749 return -ENOBUFS;
10750 pat_len = wowlan->patterns[i].pattern_len;
10751 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10752 wowlan->patterns[i].mask) ||
10753 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10754 wowlan->patterns[i].pattern) ||
10755 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10756 wowlan->patterns[i].pkt_offset))
10757 return -ENOBUFS;
10758 nla_nest_end(msg, nl_pat);
10759 }
10760 nla_nest_end(msg, nl_pats);
10761
10762 return 0;
10763 }
10764
10765 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10766 struct cfg80211_wowlan_tcp *tcp)
10767 {
10768 struct nlattr *nl_tcp;
10769
10770 if (!tcp)
10771 return 0;
10772
10773 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10774 if (!nl_tcp)
10775 return -ENOBUFS;
10776
10777 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10778 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10779 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10780 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10781 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10782 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10783 tcp->payload_len, tcp->payload) ||
10784 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10785 tcp->data_interval) ||
10786 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10787 tcp->wake_len, tcp->wake_data) ||
10788 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10789 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10790 return -ENOBUFS;
10791
10792 if (tcp->payload_seq.len &&
10793 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10794 sizeof(tcp->payload_seq), &tcp->payload_seq))
10795 return -ENOBUFS;
10796
10797 if (tcp->payload_tok.len &&
10798 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10799 sizeof(tcp->payload_tok) + tcp->tokens_size,
10800 &tcp->payload_tok))
10801 return -ENOBUFS;
10802
10803 nla_nest_end(msg, nl_tcp);
10804
10805 return 0;
10806 }
10807
10808 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10809 struct cfg80211_sched_scan_request *req)
10810 {
10811 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10812 int i;
10813
10814 if (!req)
10815 return 0;
10816
10817 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10818 if (!nd)
10819 return -ENOBUFS;
10820
10821 if (req->n_scan_plans == 1 &&
10822 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10823 req->scan_plans[0].interval * 1000))
10824 return -ENOBUFS;
10825
10826 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10827 return -ENOBUFS;
10828
10829 if (req->relative_rssi_set) {
10830 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10831
10832 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10833 req->relative_rssi))
10834 return -ENOBUFS;
10835
10836 rssi_adjust.band = req->rssi_adjust.band;
10837 rssi_adjust.delta = req->rssi_adjust.delta;
10838 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10839 sizeof(rssi_adjust), &rssi_adjust))
10840 return -ENOBUFS;
10841 }
10842
10843 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10844 if (!freqs)
10845 return -ENOBUFS;
10846
10847 for (i = 0; i < req->n_channels; i++) {
10848 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10849 return -ENOBUFS;
10850 }
10851
10852 nla_nest_end(msg, freqs);
10853
10854 if (req->n_match_sets) {
10855 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10856 if (!matches)
10857 return -ENOBUFS;
10858
10859 for (i = 0; i < req->n_match_sets; i++) {
10860 match = nla_nest_start(msg, i);
10861 if (!match)
10862 return -ENOBUFS;
10863
10864 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10865 req->match_sets[i].ssid.ssid_len,
10866 req->match_sets[i].ssid.ssid))
10867 return -ENOBUFS;
10868 nla_nest_end(msg, match);
10869 }
10870 nla_nest_end(msg, matches);
10871 }
10872
10873 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10874 if (!scan_plans)
10875 return -ENOBUFS;
10876
10877 for (i = 0; i < req->n_scan_plans; i++) {
10878 scan_plan = nla_nest_start(msg, i + 1);
10879 if (!scan_plan)
10880 return -ENOBUFS;
10881
10882 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10883 req->scan_plans[i].interval) ||
10884 (req->scan_plans[i].iterations &&
10885 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10886 req->scan_plans[i].iterations)))
10887 return -ENOBUFS;
10888 nla_nest_end(msg, scan_plan);
10889 }
10890 nla_nest_end(msg, scan_plans);
10891
10892 nla_nest_end(msg, nd);
10893
10894 return 0;
10895 }
10896
10897 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10898 {
10899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10900 struct sk_buff *msg;
10901 void *hdr;
10902 u32 size = NLMSG_DEFAULT_SIZE;
10903
10904 if (!rdev->wiphy.wowlan)
10905 return -EOPNOTSUPP;
10906
10907 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10908 /* adjust size to have room for all the data */
10909 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10910 rdev->wiphy.wowlan_config->tcp->payload_len +
10911 rdev->wiphy.wowlan_config->tcp->wake_len +
10912 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10913 }
10914
10915 msg = nlmsg_new(size, GFP_KERNEL);
10916 if (!msg)
10917 return -ENOMEM;
10918
10919 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10920 NL80211_CMD_GET_WOWLAN);
10921 if (!hdr)
10922 goto nla_put_failure;
10923
10924 if (rdev->wiphy.wowlan_config) {
10925 struct nlattr *nl_wowlan;
10926
10927 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10928 if (!nl_wowlan)
10929 goto nla_put_failure;
10930
10931 if ((rdev->wiphy.wowlan_config->any &&
10932 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10933 (rdev->wiphy.wowlan_config->disconnect &&
10934 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10935 (rdev->wiphy.wowlan_config->magic_pkt &&
10936 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10937 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10938 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10939 (rdev->wiphy.wowlan_config->eap_identity_req &&
10940 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10941 (rdev->wiphy.wowlan_config->four_way_handshake &&
10942 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10943 (rdev->wiphy.wowlan_config->rfkill_release &&
10944 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10945 goto nla_put_failure;
10946
10947 if (nl80211_send_wowlan_patterns(msg, rdev))
10948 goto nla_put_failure;
10949
10950 if (nl80211_send_wowlan_tcp(msg,
10951 rdev->wiphy.wowlan_config->tcp))
10952 goto nla_put_failure;
10953
10954 if (nl80211_send_wowlan_nd(
10955 msg,
10956 rdev->wiphy.wowlan_config->nd_config))
10957 goto nla_put_failure;
10958
10959 nla_nest_end(msg, nl_wowlan);
10960 }
10961
10962 genlmsg_end(msg, hdr);
10963 return genlmsg_reply(msg, info);
10964
10965 nla_put_failure:
10966 nlmsg_free(msg);
10967 return -ENOBUFS;
10968 }
10969
10970 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10971 struct nlattr *attr,
10972 struct cfg80211_wowlan *trig)
10973 {
10974 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10975 struct cfg80211_wowlan_tcp *cfg;
10976 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10977 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10978 u32 size;
10979 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10980 int err, port;
10981
10982 if (!rdev->wiphy.wowlan->tcp)
10983 return -EINVAL;
10984
10985 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10986 nl80211_wowlan_tcp_policy, NULL);
10987 if (err)
10988 return err;
10989
10990 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10991 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10992 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10993 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10994 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10995 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10996 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10997 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10998 return -EINVAL;
10999
11000 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11001 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11002 return -EINVAL;
11003
11004 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11005 rdev->wiphy.wowlan->tcp->data_interval_max ||
11006 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11007 return -EINVAL;
11008
11009 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11010 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11011 return -EINVAL;
11012
11013 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11014 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11015 return -EINVAL;
11016
11017 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11018 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11019
11020 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11021 tokens_size = tokln - sizeof(*tok);
11022
11023 if (!tok->len || tokens_size % tok->len)
11024 return -EINVAL;
11025 if (!rdev->wiphy.wowlan->tcp->tok)
11026 return -EINVAL;
11027 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11028 return -EINVAL;
11029 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11030 return -EINVAL;
11031 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11032 return -EINVAL;
11033 if (tok->offset + tok->len > data_size)
11034 return -EINVAL;
11035 }
11036
11037 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11038 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11039 if (!rdev->wiphy.wowlan->tcp->seq)
11040 return -EINVAL;
11041 if (seq->len == 0 || seq->len > 4)
11042 return -EINVAL;
11043 if (seq->len + seq->offset > data_size)
11044 return -EINVAL;
11045 }
11046
11047 size = sizeof(*cfg);
11048 size += data_size;
11049 size += wake_size + wake_mask_size;
11050 size += tokens_size;
11051
11052 cfg = kzalloc(size, GFP_KERNEL);
11053 if (!cfg)
11054 return -ENOMEM;
11055 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11056 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11057 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11058 ETH_ALEN);
11059 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11060 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11061 else
11062 port = 0;
11063 #ifdef CONFIG_INET
11064 /* allocate a socket and port for it and use it */
11065 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11066 IPPROTO_TCP, &cfg->sock, 1);
11067 if (err) {
11068 kfree(cfg);
11069 return err;
11070 }
11071 if (inet_csk_get_port(cfg->sock->sk, port)) {
11072 sock_release(cfg->sock);
11073 kfree(cfg);
11074 return -EADDRINUSE;
11075 }
11076 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11077 #else
11078 if (!port) {
11079 kfree(cfg);
11080 return -EINVAL;
11081 }
11082 cfg->src_port = port;
11083 #endif
11084
11085 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11086 cfg->payload_len = data_size;
11087 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11088 memcpy((void *)cfg->payload,
11089 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11090 data_size);
11091 if (seq)
11092 cfg->payload_seq = *seq;
11093 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11094 cfg->wake_len = wake_size;
11095 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11096 memcpy((void *)cfg->wake_data,
11097 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11098 wake_size);
11099 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11100 data_size + wake_size;
11101 memcpy((void *)cfg->wake_mask,
11102 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11103 wake_mask_size);
11104 if (tok) {
11105 cfg->tokens_size = tokens_size;
11106 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11107 }
11108
11109 trig->tcp = cfg;
11110
11111 return 0;
11112 }
11113
11114 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11115 const struct wiphy_wowlan_support *wowlan,
11116 struct nlattr *attr,
11117 struct cfg80211_wowlan *trig)
11118 {
11119 struct nlattr **tb;
11120 int err;
11121
11122 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11123 if (!tb)
11124 return -ENOMEM;
11125
11126 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11127 err = -EOPNOTSUPP;
11128 goto out;
11129 }
11130
11131 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
11132 NULL);
11133 if (err)
11134 goto out;
11135
11136 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11137 wowlan->max_nd_match_sets);
11138 err = PTR_ERR_OR_ZERO(trig->nd_config);
11139 if (err)
11140 trig->nd_config = NULL;
11141
11142 out:
11143 kfree(tb);
11144 return err;
11145 }
11146
11147 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11148 {
11149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11150 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11151 struct cfg80211_wowlan new_triggers = {};
11152 struct cfg80211_wowlan *ntrig;
11153 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11154 int err, i;
11155 bool prev_enabled = rdev->wiphy.wowlan_config;
11156 bool regular = false;
11157
11158 if (!wowlan)
11159 return -EOPNOTSUPP;
11160
11161 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11162 cfg80211_rdev_free_wowlan(rdev);
11163 rdev->wiphy.wowlan_config = NULL;
11164 goto set_wakeup;
11165 }
11166
11167 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
11168 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11169 nl80211_wowlan_policy, info->extack);
11170 if (err)
11171 return err;
11172
11173 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11174 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11175 return -EINVAL;
11176 new_triggers.any = true;
11177 }
11178
11179 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11180 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11181 return -EINVAL;
11182 new_triggers.disconnect = true;
11183 regular = true;
11184 }
11185
11186 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11187 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11188 return -EINVAL;
11189 new_triggers.magic_pkt = true;
11190 regular = true;
11191 }
11192
11193 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11194 return -EINVAL;
11195
11196 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11197 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11198 return -EINVAL;
11199 new_triggers.gtk_rekey_failure = true;
11200 regular = true;
11201 }
11202
11203 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11204 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11205 return -EINVAL;
11206 new_triggers.eap_identity_req = true;
11207 regular = true;
11208 }
11209
11210 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11211 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11212 return -EINVAL;
11213 new_triggers.four_way_handshake = true;
11214 regular = true;
11215 }
11216
11217 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11218 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11219 return -EINVAL;
11220 new_triggers.rfkill_release = true;
11221 regular = true;
11222 }
11223
11224 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11225 struct nlattr *pat;
11226 int n_patterns = 0;
11227 int rem, pat_len, mask_len, pkt_offset;
11228 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11229
11230 regular = true;
11231
11232 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11233 rem)
11234 n_patterns++;
11235 if (n_patterns > wowlan->n_patterns)
11236 return -EINVAL;
11237
11238 new_triggers.patterns = kcalloc(n_patterns,
11239 sizeof(new_triggers.patterns[0]),
11240 GFP_KERNEL);
11241 if (!new_triggers.patterns)
11242 return -ENOMEM;
11243
11244 new_triggers.n_patterns = n_patterns;
11245 i = 0;
11246
11247 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11248 rem) {
11249 u8 *mask_pat;
11250
11251 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11252 nl80211_packet_pattern_policy,
11253 info->extack);
11254 if (err)
11255 goto error;
11256
11257 err = -EINVAL;
11258 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11259 !pat_tb[NL80211_PKTPAT_PATTERN])
11260 goto error;
11261 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11262 mask_len = DIV_ROUND_UP(pat_len, 8);
11263 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11264 goto error;
11265 if (pat_len > wowlan->pattern_max_len ||
11266 pat_len < wowlan->pattern_min_len)
11267 goto error;
11268
11269 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11270 pkt_offset = 0;
11271 else
11272 pkt_offset = nla_get_u32(
11273 pat_tb[NL80211_PKTPAT_OFFSET]);
11274 if (pkt_offset > wowlan->max_pkt_offset)
11275 goto error;
11276 new_triggers.patterns[i].pkt_offset = pkt_offset;
11277
11278 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11279 if (!mask_pat) {
11280 err = -ENOMEM;
11281 goto error;
11282 }
11283 new_triggers.patterns[i].mask = mask_pat;
11284 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11285 mask_len);
11286 mask_pat += mask_len;
11287 new_triggers.patterns[i].pattern = mask_pat;
11288 new_triggers.patterns[i].pattern_len = pat_len;
11289 memcpy(mask_pat,
11290 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11291 pat_len);
11292 i++;
11293 }
11294 }
11295
11296 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11297 regular = true;
11298 err = nl80211_parse_wowlan_tcp(
11299 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11300 &new_triggers);
11301 if (err)
11302 goto error;
11303 }
11304
11305 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11306 regular = true;
11307 err = nl80211_parse_wowlan_nd(
11308 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11309 &new_triggers);
11310 if (err)
11311 goto error;
11312 }
11313
11314 /* The 'any' trigger means the device continues operating more or less
11315 * as in its normal operation mode and wakes up the host on most of the
11316 * normal interrupts (like packet RX, ...)
11317 * It therefore makes little sense to combine with the more constrained
11318 * wakeup trigger modes.
11319 */
11320 if (new_triggers.any && regular) {
11321 err = -EINVAL;
11322 goto error;
11323 }
11324
11325 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11326 if (!ntrig) {
11327 err = -ENOMEM;
11328 goto error;
11329 }
11330 cfg80211_rdev_free_wowlan(rdev);
11331 rdev->wiphy.wowlan_config = ntrig;
11332
11333 set_wakeup:
11334 if (rdev->ops->set_wakeup &&
11335 prev_enabled != !!rdev->wiphy.wowlan_config)
11336 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11337
11338 return 0;
11339 error:
11340 for (i = 0; i < new_triggers.n_patterns; i++)
11341 kfree(new_triggers.patterns[i].mask);
11342 kfree(new_triggers.patterns);
11343 if (new_triggers.tcp && new_triggers.tcp->sock)
11344 sock_release(new_triggers.tcp->sock);
11345 kfree(new_triggers.tcp);
11346 kfree(new_triggers.nd_config);
11347 return err;
11348 }
11349 #endif
11350
11351 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11352 struct cfg80211_registered_device *rdev)
11353 {
11354 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11355 int i, j, pat_len;
11356 struct cfg80211_coalesce_rules *rule;
11357
11358 if (!rdev->coalesce->n_rules)
11359 return 0;
11360
11361 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11362 if (!nl_rules)
11363 return -ENOBUFS;
11364
11365 for (i = 0; i < rdev->coalesce->n_rules; i++) {
11366 nl_rule = nla_nest_start(msg, i + 1);
11367 if (!nl_rule)
11368 return -ENOBUFS;
11369
11370 rule = &rdev->coalesce->rules[i];
11371 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11372 rule->delay))
11373 return -ENOBUFS;
11374
11375 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11376 rule->condition))
11377 return -ENOBUFS;
11378
11379 nl_pats = nla_nest_start(msg,
11380 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11381 if (!nl_pats)
11382 return -ENOBUFS;
11383
11384 for (j = 0; j < rule->n_patterns; j++) {
11385 nl_pat = nla_nest_start(msg, j + 1);
11386 if (!nl_pat)
11387 return -ENOBUFS;
11388 pat_len = rule->patterns[j].pattern_len;
11389 if (nla_put(msg, NL80211_PKTPAT_MASK,
11390 DIV_ROUND_UP(pat_len, 8),
11391 rule->patterns[j].mask) ||
11392 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11393 rule->patterns[j].pattern) ||
11394 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11395 rule->patterns[j].pkt_offset))
11396 return -ENOBUFS;
11397 nla_nest_end(msg, nl_pat);
11398 }
11399 nla_nest_end(msg, nl_pats);
11400 nla_nest_end(msg, nl_rule);
11401 }
11402 nla_nest_end(msg, nl_rules);
11403
11404 return 0;
11405 }
11406
11407 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11408 {
11409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11410 struct sk_buff *msg;
11411 void *hdr;
11412
11413 if (!rdev->wiphy.coalesce)
11414 return -EOPNOTSUPP;
11415
11416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11417 if (!msg)
11418 return -ENOMEM;
11419
11420 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11421 NL80211_CMD_GET_COALESCE);
11422 if (!hdr)
11423 goto nla_put_failure;
11424
11425 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11426 goto nla_put_failure;
11427
11428 genlmsg_end(msg, hdr);
11429 return genlmsg_reply(msg, info);
11430
11431 nla_put_failure:
11432 nlmsg_free(msg);
11433 return -ENOBUFS;
11434 }
11435
11436 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11437 {
11438 struct cfg80211_coalesce *coalesce = rdev->coalesce;
11439 int i, j;
11440 struct cfg80211_coalesce_rules *rule;
11441
11442 if (!coalesce)
11443 return;
11444
11445 for (i = 0; i < coalesce->n_rules; i++) {
11446 rule = &coalesce->rules[i];
11447 for (j = 0; j < rule->n_patterns; j++)
11448 kfree(rule->patterns[j].mask);
11449 kfree(rule->patterns);
11450 }
11451 kfree(coalesce->rules);
11452 kfree(coalesce);
11453 rdev->coalesce = NULL;
11454 }
11455
11456 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11457 struct nlattr *rule,
11458 struct cfg80211_coalesce_rules *new_rule)
11459 {
11460 int err, i;
11461 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11462 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11463 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11464 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11465
11466 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11467 nl80211_coalesce_policy, NULL);
11468 if (err)
11469 return err;
11470
11471 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11472 new_rule->delay =
11473 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11474 if (new_rule->delay > coalesce->max_delay)
11475 return -EINVAL;
11476
11477 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11478 new_rule->condition =
11479 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11480
11481 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11482 return -EINVAL;
11483
11484 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11485 rem)
11486 n_patterns++;
11487 if (n_patterns > coalesce->n_patterns)
11488 return -EINVAL;
11489
11490 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11491 GFP_KERNEL);
11492 if (!new_rule->patterns)
11493 return -ENOMEM;
11494
11495 new_rule->n_patterns = n_patterns;
11496 i = 0;
11497
11498 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11499 rem) {
11500 u8 *mask_pat;
11501
11502 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11503 nl80211_packet_pattern_policy, NULL);
11504 if (err)
11505 return err;
11506
11507 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11508 !pat_tb[NL80211_PKTPAT_PATTERN])
11509 return -EINVAL;
11510 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11511 mask_len = DIV_ROUND_UP(pat_len, 8);
11512 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11513 return -EINVAL;
11514 if (pat_len > coalesce->pattern_max_len ||
11515 pat_len < coalesce->pattern_min_len)
11516 return -EINVAL;
11517
11518 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11519 pkt_offset = 0;
11520 else
11521 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11522 if (pkt_offset > coalesce->max_pkt_offset)
11523 return -EINVAL;
11524 new_rule->patterns[i].pkt_offset = pkt_offset;
11525
11526 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11527 if (!mask_pat)
11528 return -ENOMEM;
11529
11530 new_rule->patterns[i].mask = mask_pat;
11531 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11532 mask_len);
11533
11534 mask_pat += mask_len;
11535 new_rule->patterns[i].pattern = mask_pat;
11536 new_rule->patterns[i].pattern_len = pat_len;
11537 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11538 pat_len);
11539 i++;
11540 }
11541
11542 return 0;
11543 }
11544
11545 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11546 {
11547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11548 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11549 struct cfg80211_coalesce new_coalesce = {};
11550 struct cfg80211_coalesce *n_coalesce;
11551 int err, rem_rule, n_rules = 0, i, j;
11552 struct nlattr *rule;
11553 struct cfg80211_coalesce_rules *tmp_rule;
11554
11555 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11556 return -EOPNOTSUPP;
11557
11558 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11559 cfg80211_rdev_free_coalesce(rdev);
11560 rdev_set_coalesce(rdev, NULL);
11561 return 0;
11562 }
11563
11564 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11565 rem_rule)
11566 n_rules++;
11567 if (n_rules > coalesce->n_rules)
11568 return -EINVAL;
11569
11570 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11571 GFP_KERNEL);
11572 if (!new_coalesce.rules)
11573 return -ENOMEM;
11574
11575 new_coalesce.n_rules = n_rules;
11576 i = 0;
11577
11578 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11579 rem_rule) {
11580 err = nl80211_parse_coalesce_rule(rdev, rule,
11581 &new_coalesce.rules[i]);
11582 if (err)
11583 goto error;
11584
11585 i++;
11586 }
11587
11588 err = rdev_set_coalesce(rdev, &new_coalesce);
11589 if (err)
11590 goto error;
11591
11592 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11593 if (!n_coalesce) {
11594 err = -ENOMEM;
11595 goto error;
11596 }
11597 cfg80211_rdev_free_coalesce(rdev);
11598 rdev->coalesce = n_coalesce;
11599
11600 return 0;
11601 error:
11602 for (i = 0; i < new_coalesce.n_rules; i++) {
11603 tmp_rule = &new_coalesce.rules[i];
11604 for (j = 0; j < tmp_rule->n_patterns; j++)
11605 kfree(tmp_rule->patterns[j].mask);
11606 kfree(tmp_rule->patterns);
11607 }
11608 kfree(new_coalesce.rules);
11609
11610 return err;
11611 }
11612
11613 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11614 {
11615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11616 struct net_device *dev = info->user_ptr[1];
11617 struct wireless_dev *wdev = dev->ieee80211_ptr;
11618 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11619 struct cfg80211_gtk_rekey_data rekey_data;
11620 int err;
11621
11622 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11623 return -EINVAL;
11624
11625 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11626 info->attrs[NL80211_ATTR_REKEY_DATA],
11627 nl80211_rekey_policy, info->extack);
11628 if (err)
11629 return err;
11630
11631 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11632 !tb[NL80211_REKEY_DATA_KCK])
11633 return -EINVAL;
11634 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11635 return -ERANGE;
11636 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11637 return -ERANGE;
11638 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11639 return -ERANGE;
11640
11641 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11642 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11643 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11644
11645 wdev_lock(wdev);
11646 if (!wdev->current_bss) {
11647 err = -ENOTCONN;
11648 goto out;
11649 }
11650
11651 if (!rdev->ops->set_rekey_data) {
11652 err = -EOPNOTSUPP;
11653 goto out;
11654 }
11655
11656 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11657 out:
11658 wdev_unlock(wdev);
11659 return err;
11660 }
11661
11662 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11663 struct genl_info *info)
11664 {
11665 struct net_device *dev = info->user_ptr[1];
11666 struct wireless_dev *wdev = dev->ieee80211_ptr;
11667
11668 if (wdev->iftype != NL80211_IFTYPE_AP &&
11669 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11670 return -EINVAL;
11671
11672 if (wdev->ap_unexpected_nlportid)
11673 return -EBUSY;
11674
11675 wdev->ap_unexpected_nlportid = info->snd_portid;
11676 return 0;
11677 }
11678
11679 static int nl80211_probe_client(struct sk_buff *skb,
11680 struct genl_info *info)
11681 {
11682 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11683 struct net_device *dev = info->user_ptr[1];
11684 struct wireless_dev *wdev = dev->ieee80211_ptr;
11685 struct sk_buff *msg;
11686 void *hdr;
11687 const u8 *addr;
11688 u64 cookie;
11689 int err;
11690
11691 if (wdev->iftype != NL80211_IFTYPE_AP &&
11692 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11693 return -EOPNOTSUPP;
11694
11695 if (!info->attrs[NL80211_ATTR_MAC])
11696 return -EINVAL;
11697
11698 if (!rdev->ops->probe_client)
11699 return -EOPNOTSUPP;
11700
11701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11702 if (!msg)
11703 return -ENOMEM;
11704
11705 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11706 NL80211_CMD_PROBE_CLIENT);
11707 if (!hdr) {
11708 err = -ENOBUFS;
11709 goto free_msg;
11710 }
11711
11712 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11713
11714 err = rdev_probe_client(rdev, dev, addr, &cookie);
11715 if (err)
11716 goto free_msg;
11717
11718 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11719 NL80211_ATTR_PAD))
11720 goto nla_put_failure;
11721
11722 genlmsg_end(msg, hdr);
11723
11724 return genlmsg_reply(msg, info);
11725
11726 nla_put_failure:
11727 err = -ENOBUFS;
11728 free_msg:
11729 nlmsg_free(msg);
11730 return err;
11731 }
11732
11733 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11734 {
11735 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11736 struct cfg80211_beacon_registration *reg, *nreg;
11737 int rv;
11738
11739 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11740 return -EOPNOTSUPP;
11741
11742 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11743 if (!nreg)
11744 return -ENOMEM;
11745
11746 /* First, check if already registered. */
11747 spin_lock_bh(&rdev->beacon_registrations_lock);
11748 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11749 if (reg->nlportid == info->snd_portid) {
11750 rv = -EALREADY;
11751 goto out_err;
11752 }
11753 }
11754 /* Add it to the list */
11755 nreg->nlportid = info->snd_portid;
11756 list_add(&nreg->list, &rdev->beacon_registrations);
11757
11758 spin_unlock_bh(&rdev->beacon_registrations_lock);
11759
11760 return 0;
11761 out_err:
11762 spin_unlock_bh(&rdev->beacon_registrations_lock);
11763 kfree(nreg);
11764 return rv;
11765 }
11766
11767 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11768 {
11769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11770 struct wireless_dev *wdev = info->user_ptr[1];
11771 int err;
11772
11773 if (!rdev->ops->start_p2p_device)
11774 return -EOPNOTSUPP;
11775
11776 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11777 return -EOPNOTSUPP;
11778
11779 if (wdev_running(wdev))
11780 return 0;
11781
11782 if (rfkill_blocked(rdev->rfkill))
11783 return -ERFKILL;
11784
11785 err = rdev_start_p2p_device(rdev, wdev);
11786 if (err)
11787 return err;
11788
11789 wdev->is_running = true;
11790 rdev->opencount++;
11791
11792 return 0;
11793 }
11794
11795 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11796 {
11797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11798 struct wireless_dev *wdev = info->user_ptr[1];
11799
11800 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11801 return -EOPNOTSUPP;
11802
11803 if (!rdev->ops->stop_p2p_device)
11804 return -EOPNOTSUPP;
11805
11806 cfg80211_stop_p2p_device(rdev, wdev);
11807
11808 return 0;
11809 }
11810
11811 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11812 {
11813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11814 struct wireless_dev *wdev = info->user_ptr[1];
11815 struct cfg80211_nan_conf conf = {};
11816 int err;
11817
11818 if (wdev->iftype != NL80211_IFTYPE_NAN)
11819 return -EOPNOTSUPP;
11820
11821 if (wdev_running(wdev))
11822 return -EEXIST;
11823
11824 if (rfkill_blocked(rdev->rfkill))
11825 return -ERFKILL;
11826
11827 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11828 return -EINVAL;
11829
11830 conf.master_pref =
11831 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11832
11833 if (info->attrs[NL80211_ATTR_BANDS]) {
11834 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11835
11836 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11837 return -EOPNOTSUPP;
11838
11839 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11840 return -EINVAL;
11841
11842 conf.bands = bands;
11843 }
11844
11845 err = rdev_start_nan(rdev, wdev, &conf);
11846 if (err)
11847 return err;
11848
11849 wdev->is_running = true;
11850 rdev->opencount++;
11851
11852 return 0;
11853 }
11854
11855 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11856 {
11857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11858 struct wireless_dev *wdev = info->user_ptr[1];
11859
11860 if (wdev->iftype != NL80211_IFTYPE_NAN)
11861 return -EOPNOTSUPP;
11862
11863 cfg80211_stop_nan(rdev, wdev);
11864
11865 return 0;
11866 }
11867
11868 static int validate_nan_filter(struct nlattr *filter_attr)
11869 {
11870 struct nlattr *attr;
11871 int len = 0, n_entries = 0, rem;
11872
11873 nla_for_each_nested(attr, filter_attr, rem) {
11874 len += nla_len(attr);
11875 n_entries++;
11876 }
11877
11878 if (len >= U8_MAX)
11879 return -EINVAL;
11880
11881 return n_entries;
11882 }
11883
11884 static int handle_nan_filter(struct nlattr *attr_filter,
11885 struct cfg80211_nan_func *func,
11886 bool tx)
11887 {
11888 struct nlattr *attr;
11889 int n_entries, rem, i;
11890 struct cfg80211_nan_func_filter *filter;
11891
11892 n_entries = validate_nan_filter(attr_filter);
11893 if (n_entries < 0)
11894 return n_entries;
11895
11896 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11897
11898 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11899 if (!filter)
11900 return -ENOMEM;
11901
11902 i = 0;
11903 nla_for_each_nested(attr, attr_filter, rem) {
11904 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11905 filter[i].len = nla_len(attr);
11906 i++;
11907 }
11908 if (tx) {
11909 func->num_tx_filters = n_entries;
11910 func->tx_filters = filter;
11911 } else {
11912 func->num_rx_filters = n_entries;
11913 func->rx_filters = filter;
11914 }
11915
11916 return 0;
11917 }
11918
11919 static int nl80211_nan_add_func(struct sk_buff *skb,
11920 struct genl_info *info)
11921 {
11922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11923 struct wireless_dev *wdev = info->user_ptr[1];
11924 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11925 struct cfg80211_nan_func *func;
11926 struct sk_buff *msg = NULL;
11927 void *hdr = NULL;
11928 int err = 0;
11929
11930 if (wdev->iftype != NL80211_IFTYPE_NAN)
11931 return -EOPNOTSUPP;
11932
11933 if (!wdev_running(wdev))
11934 return -ENOTCONN;
11935
11936 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11937 return -EINVAL;
11938
11939 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11940 info->attrs[NL80211_ATTR_NAN_FUNC],
11941 nl80211_nan_func_policy, info->extack);
11942 if (err)
11943 return err;
11944
11945 func = kzalloc(sizeof(*func), GFP_KERNEL);
11946 if (!func)
11947 return -ENOMEM;
11948
11949 func->cookie = cfg80211_assign_cookie(rdev);
11950
11951 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11952 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11953 err = -EINVAL;
11954 goto out;
11955 }
11956
11957
11958 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11959
11960 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11961 err = -EINVAL;
11962 goto out;
11963 }
11964
11965 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11966 sizeof(func->service_id));
11967
11968 func->close_range =
11969 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11970
11971 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11972 func->serv_spec_info_len =
11973 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11974 func->serv_spec_info =
11975 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11976 func->serv_spec_info_len,
11977 GFP_KERNEL);
11978 if (!func->serv_spec_info) {
11979 err = -ENOMEM;
11980 goto out;
11981 }
11982 }
11983
11984 if (tb[NL80211_NAN_FUNC_TTL])
11985 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11986
11987 switch (func->type) {
11988 case NL80211_NAN_FUNC_PUBLISH:
11989 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11990 err = -EINVAL;
11991 goto out;
11992 }
11993
11994 func->publish_type =
11995 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11996 func->publish_bcast =
11997 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11998
11999 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12000 func->publish_bcast) {
12001 err = -EINVAL;
12002 goto out;
12003 }
12004 break;
12005 case NL80211_NAN_FUNC_SUBSCRIBE:
12006 func->subscribe_active =
12007 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12008 break;
12009 case NL80211_NAN_FUNC_FOLLOW_UP:
12010 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12011 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12012 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12013 err = -EINVAL;
12014 goto out;
12015 }
12016
12017 func->followup_id =
12018 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12019 func->followup_reqid =
12020 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12021 memcpy(func->followup_dest.addr,
12022 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12023 sizeof(func->followup_dest.addr));
12024 if (func->ttl) {
12025 err = -EINVAL;
12026 goto out;
12027 }
12028 break;
12029 default:
12030 err = -EINVAL;
12031 goto out;
12032 }
12033
12034 if (tb[NL80211_NAN_FUNC_SRF]) {
12035 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12036
12037 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
12038 tb[NL80211_NAN_FUNC_SRF],
12039 nl80211_nan_srf_policy, info->extack);
12040 if (err)
12041 goto out;
12042
12043 func->srf_include =
12044 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12045
12046 if (srf_tb[NL80211_NAN_SRF_BF]) {
12047 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12048 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12049 err = -EINVAL;
12050 goto out;
12051 }
12052
12053 func->srf_bf_len =
12054 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12055 func->srf_bf =
12056 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12057 func->srf_bf_len, GFP_KERNEL);
12058 if (!func->srf_bf) {
12059 err = -ENOMEM;
12060 goto out;
12061 }
12062
12063 func->srf_bf_idx =
12064 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12065 } else {
12066 struct nlattr *attr, *mac_attr =
12067 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12068 int n_entries, rem, i = 0;
12069
12070 if (!mac_attr) {
12071 err = -EINVAL;
12072 goto out;
12073 }
12074
12075 n_entries = validate_acl_mac_addrs(mac_attr);
12076 if (n_entries <= 0) {
12077 err = -EINVAL;
12078 goto out;
12079 }
12080
12081 func->srf_num_macs = n_entries;
12082 func->srf_macs =
12083 kcalloc(n_entries, sizeof(*func->srf_macs),
12084 GFP_KERNEL);
12085 if (!func->srf_macs) {
12086 err = -ENOMEM;
12087 goto out;
12088 }
12089
12090 nla_for_each_nested(attr, mac_attr, rem)
12091 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12092 sizeof(*func->srf_macs));
12093 }
12094 }
12095
12096 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12097 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12098 func, true);
12099 if (err)
12100 goto out;
12101 }
12102
12103 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12104 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12105 func, false);
12106 if (err)
12107 goto out;
12108 }
12109
12110 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12111 if (!msg) {
12112 err = -ENOMEM;
12113 goto out;
12114 }
12115
12116 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12117 NL80211_CMD_ADD_NAN_FUNCTION);
12118 /* This can't really happen - we just allocated 4KB */
12119 if (WARN_ON(!hdr)) {
12120 err = -ENOMEM;
12121 goto out;
12122 }
12123
12124 err = rdev_add_nan_func(rdev, wdev, func);
12125 out:
12126 if (err < 0) {
12127 cfg80211_free_nan_func(func);
12128 nlmsg_free(msg);
12129 return err;
12130 }
12131
12132 /* propagate the instance id and cookie to userspace */
12133 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12134 NL80211_ATTR_PAD))
12135 goto nla_put_failure;
12136
12137 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12138 if (!func_attr)
12139 goto nla_put_failure;
12140
12141 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12142 func->instance_id))
12143 goto nla_put_failure;
12144
12145 nla_nest_end(msg, func_attr);
12146
12147 genlmsg_end(msg, hdr);
12148 return genlmsg_reply(msg, info);
12149
12150 nla_put_failure:
12151 nlmsg_free(msg);
12152 return -ENOBUFS;
12153 }
12154
12155 static int nl80211_nan_del_func(struct sk_buff *skb,
12156 struct genl_info *info)
12157 {
12158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159 struct wireless_dev *wdev = info->user_ptr[1];
12160 u64 cookie;
12161
12162 if (wdev->iftype != NL80211_IFTYPE_NAN)
12163 return -EOPNOTSUPP;
12164
12165 if (!wdev_running(wdev))
12166 return -ENOTCONN;
12167
12168 if (!info->attrs[NL80211_ATTR_COOKIE])
12169 return -EINVAL;
12170
12171 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12172
12173 rdev_del_nan_func(rdev, wdev, cookie);
12174
12175 return 0;
12176 }
12177
12178 static int nl80211_nan_change_config(struct sk_buff *skb,
12179 struct genl_info *info)
12180 {
12181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12182 struct wireless_dev *wdev = info->user_ptr[1];
12183 struct cfg80211_nan_conf conf = {};
12184 u32 changed = 0;
12185
12186 if (wdev->iftype != NL80211_IFTYPE_NAN)
12187 return -EOPNOTSUPP;
12188
12189 if (!wdev_running(wdev))
12190 return -ENOTCONN;
12191
12192 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12193 conf.master_pref =
12194 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12195 if (conf.master_pref <= 1 || conf.master_pref == 255)
12196 return -EINVAL;
12197
12198 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12199 }
12200
12201 if (info->attrs[NL80211_ATTR_BANDS]) {
12202 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12203
12204 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12205 return -EOPNOTSUPP;
12206
12207 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12208 return -EINVAL;
12209
12210 conf.bands = bands;
12211 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12212 }
12213
12214 if (!changed)
12215 return -EINVAL;
12216
12217 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12218 }
12219
12220 void cfg80211_nan_match(struct wireless_dev *wdev,
12221 struct cfg80211_nan_match_params *match, gfp_t gfp)
12222 {
12223 struct wiphy *wiphy = wdev->wiphy;
12224 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12225 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12226 struct sk_buff *msg;
12227 void *hdr;
12228
12229 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12230 return;
12231
12232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12233 if (!msg)
12234 return;
12235
12236 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12237 if (!hdr) {
12238 nlmsg_free(msg);
12239 return;
12240 }
12241
12242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12243 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12244 wdev->netdev->ifindex)) ||
12245 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12246 NL80211_ATTR_PAD))
12247 goto nla_put_failure;
12248
12249 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12250 NL80211_ATTR_PAD) ||
12251 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12252 goto nla_put_failure;
12253
12254 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
12255 if (!match_attr)
12256 goto nla_put_failure;
12257
12258 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
12259 if (!local_func_attr)
12260 goto nla_put_failure;
12261
12262 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12263 goto nla_put_failure;
12264
12265 nla_nest_end(msg, local_func_attr);
12266
12267 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
12268 if (!peer_func_attr)
12269 goto nla_put_failure;
12270
12271 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12272 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12273 goto nla_put_failure;
12274
12275 if (match->info && match->info_len &&
12276 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12277 match->info))
12278 goto nla_put_failure;
12279
12280 nla_nest_end(msg, peer_func_attr);
12281 nla_nest_end(msg, match_attr);
12282 genlmsg_end(msg, hdr);
12283
12284 if (!wdev->owner_nlportid)
12285 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12286 msg, 0, NL80211_MCGRP_NAN, gfp);
12287 else
12288 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12289 wdev->owner_nlportid);
12290
12291 return;
12292
12293 nla_put_failure:
12294 nlmsg_free(msg);
12295 }
12296 EXPORT_SYMBOL(cfg80211_nan_match);
12297
12298 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12299 u8 inst_id,
12300 enum nl80211_nan_func_term_reason reason,
12301 u64 cookie, gfp_t gfp)
12302 {
12303 struct wiphy *wiphy = wdev->wiphy;
12304 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12305 struct sk_buff *msg;
12306 struct nlattr *func_attr;
12307 void *hdr;
12308
12309 if (WARN_ON(!inst_id))
12310 return;
12311
12312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12313 if (!msg)
12314 return;
12315
12316 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12317 if (!hdr) {
12318 nlmsg_free(msg);
12319 return;
12320 }
12321
12322 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12323 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12324 wdev->netdev->ifindex)) ||
12325 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12326 NL80211_ATTR_PAD))
12327 goto nla_put_failure;
12328
12329 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12330 NL80211_ATTR_PAD))
12331 goto nla_put_failure;
12332
12333 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12334 if (!func_attr)
12335 goto nla_put_failure;
12336
12337 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12338 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12339 goto nla_put_failure;
12340
12341 nla_nest_end(msg, func_attr);
12342 genlmsg_end(msg, hdr);
12343
12344 if (!wdev->owner_nlportid)
12345 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12346 msg, 0, NL80211_MCGRP_NAN, gfp);
12347 else
12348 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12349 wdev->owner_nlportid);
12350
12351 return;
12352
12353 nla_put_failure:
12354 nlmsg_free(msg);
12355 }
12356 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12357
12358 static int nl80211_get_protocol_features(struct sk_buff *skb,
12359 struct genl_info *info)
12360 {
12361 void *hdr;
12362 struct sk_buff *msg;
12363
12364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12365 if (!msg)
12366 return -ENOMEM;
12367
12368 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12369 NL80211_CMD_GET_PROTOCOL_FEATURES);
12370 if (!hdr)
12371 goto nla_put_failure;
12372
12373 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12374 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12375 goto nla_put_failure;
12376
12377 genlmsg_end(msg, hdr);
12378 return genlmsg_reply(msg, info);
12379
12380 nla_put_failure:
12381 kfree_skb(msg);
12382 return -ENOBUFS;
12383 }
12384
12385 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12386 {
12387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12388 struct cfg80211_update_ft_ies_params ft_params;
12389 struct net_device *dev = info->user_ptr[1];
12390
12391 if (!rdev->ops->update_ft_ies)
12392 return -EOPNOTSUPP;
12393
12394 if (!info->attrs[NL80211_ATTR_MDID] ||
12395 !info->attrs[NL80211_ATTR_IE])
12396 return -EINVAL;
12397
12398 memset(&ft_params, 0, sizeof(ft_params));
12399 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12400 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12401 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12402
12403 return rdev_update_ft_ies(rdev, dev, &ft_params);
12404 }
12405
12406 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12407 struct genl_info *info)
12408 {
12409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12410 struct wireless_dev *wdev = info->user_ptr[1];
12411 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12412 u16 duration;
12413 int ret;
12414
12415 if (!rdev->ops->crit_proto_start)
12416 return -EOPNOTSUPP;
12417
12418 if (WARN_ON(!rdev->ops->crit_proto_stop))
12419 return -EINVAL;
12420
12421 if (rdev->crit_proto_nlportid)
12422 return -EBUSY;
12423
12424 /* determine protocol if provided */
12425 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12426 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12427
12428 if (proto >= NUM_NL80211_CRIT_PROTO)
12429 return -EINVAL;
12430
12431 /* timeout must be provided */
12432 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12433 return -EINVAL;
12434
12435 duration =
12436 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12437
12438 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12439 return -ERANGE;
12440
12441 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12442 if (!ret)
12443 rdev->crit_proto_nlportid = info->snd_portid;
12444
12445 return ret;
12446 }
12447
12448 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12449 struct genl_info *info)
12450 {
12451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12452 struct wireless_dev *wdev = info->user_ptr[1];
12453
12454 if (!rdev->ops->crit_proto_stop)
12455 return -EOPNOTSUPP;
12456
12457 if (rdev->crit_proto_nlportid) {
12458 rdev->crit_proto_nlportid = 0;
12459 rdev_crit_proto_stop(rdev, wdev);
12460 }
12461 return 0;
12462 }
12463
12464 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12465 {
12466 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12467 struct wireless_dev *wdev =
12468 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12469 int i, err;
12470 u32 vid, subcmd;
12471
12472 if (!rdev->wiphy.vendor_commands)
12473 return -EOPNOTSUPP;
12474
12475 if (IS_ERR(wdev)) {
12476 err = PTR_ERR(wdev);
12477 if (err != -EINVAL)
12478 return err;
12479 wdev = NULL;
12480 } else if (wdev->wiphy != &rdev->wiphy) {
12481 return -EINVAL;
12482 }
12483
12484 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12485 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12486 return -EINVAL;
12487
12488 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12489 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12490 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12491 const struct wiphy_vendor_command *vcmd;
12492 void *data = NULL;
12493 int len = 0;
12494
12495 vcmd = &rdev->wiphy.vendor_commands[i];
12496
12497 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12498 continue;
12499
12500 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12501 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12502 if (!wdev)
12503 return -EINVAL;
12504 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12505 !wdev->netdev)
12506 return -EINVAL;
12507
12508 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12509 if (!wdev_running(wdev))
12510 return -ENETDOWN;
12511 }
12512
12513 if (!vcmd->doit)
12514 return -EOPNOTSUPP;
12515 } else {
12516 wdev = NULL;
12517 }
12518
12519 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12520 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12521 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12522 }
12523
12524 rdev->cur_cmd_info = info;
12525 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12526 data, len);
12527 rdev->cur_cmd_info = NULL;
12528 return err;
12529 }
12530
12531 return -EOPNOTSUPP;
12532 }
12533
12534 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12535 struct netlink_callback *cb,
12536 struct cfg80211_registered_device **rdev,
12537 struct wireless_dev **wdev)
12538 {
12539 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12540 u32 vid, subcmd;
12541 unsigned int i;
12542 int vcmd_idx = -1;
12543 int err;
12544 void *data = NULL;
12545 unsigned int data_len = 0;
12546
12547 if (cb->args[0]) {
12548 /* subtract the 1 again here */
12549 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12550 struct wireless_dev *tmp;
12551
12552 if (!wiphy)
12553 return -ENODEV;
12554 *rdev = wiphy_to_rdev(wiphy);
12555 *wdev = NULL;
12556
12557 if (cb->args[1]) {
12558 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12559 if (tmp->identifier == cb->args[1] - 1) {
12560 *wdev = tmp;
12561 break;
12562 }
12563 }
12564 }
12565
12566 /* keep rtnl locked in successful case */
12567 return 0;
12568 }
12569
12570 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12571 nl80211_fam.maxattr, nl80211_policy, NULL);
12572 if (err)
12573 return err;
12574
12575 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12576 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12577 return -EINVAL;
12578
12579 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12580 if (IS_ERR(*wdev))
12581 *wdev = NULL;
12582
12583 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12584 if (IS_ERR(*rdev))
12585 return PTR_ERR(*rdev);
12586
12587 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12588 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12589
12590 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12591 const struct wiphy_vendor_command *vcmd;
12592
12593 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12594
12595 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12596 continue;
12597
12598 if (!vcmd->dumpit)
12599 return -EOPNOTSUPP;
12600
12601 vcmd_idx = i;
12602 break;
12603 }
12604
12605 if (vcmd_idx < 0)
12606 return -EOPNOTSUPP;
12607
12608 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12609 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12610 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12611 }
12612
12613 /* 0 is the first index - add 1 to parse only once */
12614 cb->args[0] = (*rdev)->wiphy_idx + 1;
12615 /* add 1 to know if it was NULL */
12616 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12617 cb->args[2] = vcmd_idx;
12618 cb->args[3] = (unsigned long)data;
12619 cb->args[4] = data_len;
12620
12621 /* keep rtnl locked in successful case */
12622 return 0;
12623 }
12624
12625 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12626 struct netlink_callback *cb)
12627 {
12628 struct cfg80211_registered_device *rdev;
12629 struct wireless_dev *wdev;
12630 unsigned int vcmd_idx;
12631 const struct wiphy_vendor_command *vcmd;
12632 void *data;
12633 int data_len;
12634 int err;
12635 struct nlattr *vendor_data;
12636
12637 rtnl_lock();
12638 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12639 if (err)
12640 goto out;
12641
12642 vcmd_idx = cb->args[2];
12643 data = (void *)cb->args[3];
12644 data_len = cb->args[4];
12645 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12646
12647 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12648 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12649 if (!wdev) {
12650 err = -EINVAL;
12651 goto out;
12652 }
12653 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12654 !wdev->netdev) {
12655 err = -EINVAL;
12656 goto out;
12657 }
12658
12659 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12660 if (!wdev_running(wdev)) {
12661 err = -ENETDOWN;
12662 goto out;
12663 }
12664 }
12665 }
12666
12667 while (1) {
12668 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12669 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12670 NL80211_CMD_VENDOR);
12671 if (!hdr)
12672 break;
12673
12674 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12675 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12676 wdev_id(wdev),
12677 NL80211_ATTR_PAD))) {
12678 genlmsg_cancel(skb, hdr);
12679 break;
12680 }
12681
12682 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12683 if (!vendor_data) {
12684 genlmsg_cancel(skb, hdr);
12685 break;
12686 }
12687
12688 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12689 (unsigned long *)&cb->args[5]);
12690 nla_nest_end(skb, vendor_data);
12691
12692 if (err == -ENOBUFS || err == -ENOENT) {
12693 genlmsg_cancel(skb, hdr);
12694 break;
12695 } else if (err) {
12696 genlmsg_cancel(skb, hdr);
12697 goto out;
12698 }
12699
12700 genlmsg_end(skb, hdr);
12701 }
12702
12703 err = skb->len;
12704 out:
12705 rtnl_unlock();
12706 return err;
12707 }
12708
12709 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12710 enum nl80211_commands cmd,
12711 enum nl80211_attrs attr,
12712 int approxlen)
12713 {
12714 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12715
12716 if (WARN_ON(!rdev->cur_cmd_info))
12717 return NULL;
12718
12719 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12720 rdev->cur_cmd_info->snd_portid,
12721 rdev->cur_cmd_info->snd_seq,
12722 cmd, attr, NULL, GFP_KERNEL);
12723 }
12724 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12725
12726 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12727 {
12728 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12729 void *hdr = ((void **)skb->cb)[1];
12730 struct nlattr *data = ((void **)skb->cb)[2];
12731
12732 /* clear CB data for netlink core to own from now on */
12733 memset(skb->cb, 0, sizeof(skb->cb));
12734
12735 if (WARN_ON(!rdev->cur_cmd_info)) {
12736 kfree_skb(skb);
12737 return -EINVAL;
12738 }
12739
12740 nla_nest_end(skb, data);
12741 genlmsg_end(skb, hdr);
12742 return genlmsg_reply(skb, rdev->cur_cmd_info);
12743 }
12744 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12745
12746 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
12747 {
12748 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12749
12750 if (WARN_ON(!rdev->cur_cmd_info))
12751 return 0;
12752
12753 return rdev->cur_cmd_info->snd_portid;
12754 }
12755 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
12756
12757 static int nl80211_set_qos_map(struct sk_buff *skb,
12758 struct genl_info *info)
12759 {
12760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12761 struct cfg80211_qos_map *qos_map = NULL;
12762 struct net_device *dev = info->user_ptr[1];
12763 u8 *pos, len, num_des, des_len, des;
12764 int ret;
12765
12766 if (!rdev->ops->set_qos_map)
12767 return -EOPNOTSUPP;
12768
12769 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12770 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12771 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12772
12773 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12774 len > IEEE80211_QOS_MAP_LEN_MAX)
12775 return -EINVAL;
12776
12777 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12778 if (!qos_map)
12779 return -ENOMEM;
12780
12781 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12782 if (num_des) {
12783 des_len = num_des *
12784 sizeof(struct cfg80211_dscp_exception);
12785 memcpy(qos_map->dscp_exception, pos, des_len);
12786 qos_map->num_des = num_des;
12787 for (des = 0; des < num_des; des++) {
12788 if (qos_map->dscp_exception[des].up > 7) {
12789 kfree(qos_map);
12790 return -EINVAL;
12791 }
12792 }
12793 pos += des_len;
12794 }
12795 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12796 }
12797
12798 wdev_lock(dev->ieee80211_ptr);
12799 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12800 if (!ret)
12801 ret = rdev_set_qos_map(rdev, dev, qos_map);
12802 wdev_unlock(dev->ieee80211_ptr);
12803
12804 kfree(qos_map);
12805 return ret;
12806 }
12807
12808 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12809 {
12810 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12811 struct net_device *dev = info->user_ptr[1];
12812 struct wireless_dev *wdev = dev->ieee80211_ptr;
12813 const u8 *peer;
12814 u8 tsid, up;
12815 u16 admitted_time = 0;
12816 int err;
12817
12818 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12819 return -EOPNOTSUPP;
12820
12821 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12822 !info->attrs[NL80211_ATTR_USER_PRIO])
12823 return -EINVAL;
12824
12825 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12826 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12827
12828 /* WMM uses TIDs 0-7 even for TSPEC */
12829 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12830 /* TODO: handle 802.11 TSPEC/admission control
12831 * need more attributes for that (e.g. BA session requirement);
12832 * change the WMM adminssion test above to allow both then
12833 */
12834 return -EINVAL;
12835 }
12836
12837 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12838
12839 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12840 admitted_time =
12841 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12842 if (!admitted_time)
12843 return -EINVAL;
12844 }
12845
12846 wdev_lock(wdev);
12847 switch (wdev->iftype) {
12848 case NL80211_IFTYPE_STATION:
12849 case NL80211_IFTYPE_P2P_CLIENT:
12850 if (wdev->current_bss)
12851 break;
12852 err = -ENOTCONN;
12853 goto out;
12854 default:
12855 err = -EOPNOTSUPP;
12856 goto out;
12857 }
12858
12859 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12860
12861 out:
12862 wdev_unlock(wdev);
12863 return err;
12864 }
12865
12866 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12867 {
12868 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12869 struct net_device *dev = info->user_ptr[1];
12870 struct wireless_dev *wdev = dev->ieee80211_ptr;
12871 const u8 *peer;
12872 u8 tsid;
12873 int err;
12874
12875 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12876 return -EINVAL;
12877
12878 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12879 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12880
12881 wdev_lock(wdev);
12882 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12883 wdev_unlock(wdev);
12884
12885 return err;
12886 }
12887
12888 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12889 struct genl_info *info)
12890 {
12891 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12892 struct net_device *dev = info->user_ptr[1];
12893 struct wireless_dev *wdev = dev->ieee80211_ptr;
12894 struct cfg80211_chan_def chandef = {};
12895 const u8 *addr;
12896 u8 oper_class;
12897 int err;
12898
12899 if (!rdev->ops->tdls_channel_switch ||
12900 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12901 return -EOPNOTSUPP;
12902
12903 switch (dev->ieee80211_ptr->iftype) {
12904 case NL80211_IFTYPE_STATION:
12905 case NL80211_IFTYPE_P2P_CLIENT:
12906 break;
12907 default:
12908 return -EOPNOTSUPP;
12909 }
12910
12911 if (!info->attrs[NL80211_ATTR_MAC] ||
12912 !info->attrs[NL80211_ATTR_OPER_CLASS])
12913 return -EINVAL;
12914
12915 err = nl80211_parse_chandef(rdev, info, &chandef);
12916 if (err)
12917 return err;
12918
12919 /*
12920 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12921 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12922 * specification is not defined for them.
12923 */
12924 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12925 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12926 chandef.width != NL80211_CHAN_WIDTH_20)
12927 return -EINVAL;
12928
12929 /* we will be active on the TDLS link */
12930 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12931 wdev->iftype))
12932 return -EINVAL;
12933
12934 /* don't allow switching to DFS channels */
12935 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12936 return -EINVAL;
12937
12938 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12939 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12940
12941 wdev_lock(wdev);
12942 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12943 wdev_unlock(wdev);
12944
12945 return err;
12946 }
12947
12948 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12949 struct genl_info *info)
12950 {
12951 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12952 struct net_device *dev = info->user_ptr[1];
12953 struct wireless_dev *wdev = dev->ieee80211_ptr;
12954 const u8 *addr;
12955
12956 if (!rdev->ops->tdls_channel_switch ||
12957 !rdev->ops->tdls_cancel_channel_switch ||
12958 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12959 return -EOPNOTSUPP;
12960
12961 switch (dev->ieee80211_ptr->iftype) {
12962 case NL80211_IFTYPE_STATION:
12963 case NL80211_IFTYPE_P2P_CLIENT:
12964 break;
12965 default:
12966 return -EOPNOTSUPP;
12967 }
12968
12969 if (!info->attrs[NL80211_ATTR_MAC])
12970 return -EINVAL;
12971
12972 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12973
12974 wdev_lock(wdev);
12975 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12976 wdev_unlock(wdev);
12977
12978 return 0;
12979 }
12980
12981 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12982 struct genl_info *info)
12983 {
12984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12985 struct net_device *dev = info->user_ptr[1];
12986 struct wireless_dev *wdev = dev->ieee80211_ptr;
12987 const struct nlattr *nla;
12988 bool enabled;
12989
12990 if (!rdev->ops->set_multicast_to_unicast)
12991 return -EOPNOTSUPP;
12992
12993 if (wdev->iftype != NL80211_IFTYPE_AP &&
12994 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12995 return -EOPNOTSUPP;
12996
12997 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12998 enabled = nla_get_flag(nla);
12999
13000 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13001 }
13002
13003 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13004 {
13005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13006 struct net_device *dev = info->user_ptr[1];
13007 struct wireless_dev *wdev = dev->ieee80211_ptr;
13008 struct cfg80211_pmk_conf pmk_conf = {};
13009 int ret;
13010
13011 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13012 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13013 return -EOPNOTSUPP;
13014
13015 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13016 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13017 return -EOPNOTSUPP;
13018
13019 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13020 return -EINVAL;
13021
13022 wdev_lock(wdev);
13023 if (!wdev->current_bss) {
13024 ret = -ENOTCONN;
13025 goto out;
13026 }
13027
13028 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13029 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13030 ret = -EINVAL;
13031 goto out;
13032 }
13033
13034 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13035 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13036 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13037 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13038 ret = -EINVAL;
13039 goto out;
13040 }
13041
13042 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13043 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13044
13045 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13046 ret = -EINVAL;
13047 goto out;
13048 }
13049
13050 pmk_conf.pmk_r0_name =
13051 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13052 }
13053
13054 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13055 out:
13056 wdev_unlock(wdev);
13057 return ret;
13058 }
13059
13060 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13061 {
13062 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13063 struct net_device *dev = info->user_ptr[1];
13064 struct wireless_dev *wdev = dev->ieee80211_ptr;
13065 const u8 *aa;
13066 int ret;
13067
13068 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13069 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13070 return -EOPNOTSUPP;
13071
13072 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13073 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13074 return -EOPNOTSUPP;
13075
13076 if (!info->attrs[NL80211_ATTR_MAC])
13077 return -EINVAL;
13078
13079 wdev_lock(wdev);
13080 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13081 ret = rdev_del_pmk(rdev, dev, aa);
13082 wdev_unlock(wdev);
13083
13084 return ret;
13085 }
13086
13087 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13088 {
13089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13090 struct net_device *dev = info->user_ptr[1];
13091 struct cfg80211_external_auth_params params;
13092
13093 if (!rdev->ops->external_auth)
13094 return -EOPNOTSUPP;
13095
13096 if (!info->attrs[NL80211_ATTR_SSID] &&
13097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13098 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13099 return -EINVAL;
13100
13101 if (!info->attrs[NL80211_ATTR_BSSID])
13102 return -EINVAL;
13103
13104 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13105 return -EINVAL;
13106
13107 memset(&params, 0, sizeof(params));
13108
13109 if (info->attrs[NL80211_ATTR_SSID]) {
13110 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13111 if (params.ssid.ssid_len == 0 ||
13112 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13113 return -EINVAL;
13114 memcpy(params.ssid.ssid,
13115 nla_data(info->attrs[NL80211_ATTR_SSID]),
13116 params.ssid.ssid_len);
13117 }
13118
13119 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13120 ETH_ALEN);
13121
13122 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13123
13124 if (info->attrs[NL80211_ATTR_PMKID])
13125 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13126
13127 return rdev_external_auth(rdev, dev, &params);
13128 }
13129
13130 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13131 {
13132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13133 struct net_device *dev = info->user_ptr[1];
13134 struct wireless_dev *wdev = dev->ieee80211_ptr;
13135 const u8 *buf;
13136 size_t len;
13137 u8 *dest;
13138 u16 proto;
13139 bool noencrypt;
13140 int err;
13141
13142 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13143 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13144 return -EOPNOTSUPP;
13145
13146 if (!rdev->ops->tx_control_port)
13147 return -EOPNOTSUPP;
13148
13149 if (!info->attrs[NL80211_ATTR_FRAME] ||
13150 !info->attrs[NL80211_ATTR_MAC] ||
13151 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13152 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13153 return -EINVAL;
13154 }
13155
13156 wdev_lock(wdev);
13157
13158 switch (wdev->iftype) {
13159 case NL80211_IFTYPE_AP:
13160 case NL80211_IFTYPE_P2P_GO:
13161 case NL80211_IFTYPE_MESH_POINT:
13162 break;
13163 case NL80211_IFTYPE_ADHOC:
13164 case NL80211_IFTYPE_STATION:
13165 case NL80211_IFTYPE_P2P_CLIENT:
13166 if (wdev->current_bss)
13167 break;
13168 err = -ENOTCONN;
13169 goto out;
13170 default:
13171 err = -EOPNOTSUPP;
13172 goto out;
13173 }
13174
13175 wdev_unlock(wdev);
13176
13177 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13178 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13179 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13180 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13181 noencrypt =
13182 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13183
13184 return rdev_tx_control_port(rdev, dev, buf, len,
13185 dest, cpu_to_be16(proto), noencrypt);
13186
13187 out:
13188 wdev_unlock(wdev);
13189 return err;
13190 }
13191
13192 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13193 struct genl_info *info)
13194 {
13195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13196 struct net_device *dev = info->user_ptr[1];
13197 struct wireless_dev *wdev = dev->ieee80211_ptr;
13198 struct cfg80211_ftm_responder_stats ftm_stats = {};
13199 struct sk_buff *msg;
13200 void *hdr;
13201 struct nlattr *ftm_stats_attr;
13202 int err;
13203
13204 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13205 return -EOPNOTSUPP;
13206
13207 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13208 if (err)
13209 return err;
13210
13211 if (!ftm_stats.filled)
13212 return -ENODATA;
13213
13214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13215 if (!msg)
13216 return -ENOMEM;
13217
13218 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13219 NL80211_CMD_GET_FTM_RESPONDER_STATS);
13220 if (!hdr)
13221 return -ENOBUFS;
13222
13223 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13224 goto nla_put_failure;
13225
13226 ftm_stats_attr = nla_nest_start(msg, NL80211_ATTR_FTM_RESPONDER_STATS);
13227 if (!ftm_stats_attr)
13228 goto nla_put_failure;
13229
13230 #define SET_FTM(field, name, type) \
13231 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13232 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
13233 ftm_stats.field)) \
13234 goto nla_put_failure; } while (0)
13235 #define SET_FTM_U64(field, name) \
13236 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13237 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
13238 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
13239 goto nla_put_failure; } while (0)
13240
13241 SET_FTM(success_num, SUCCESS_NUM, u32);
13242 SET_FTM(partial_num, PARTIAL_NUM, u32);
13243 SET_FTM(failed_num, FAILED_NUM, u32);
13244 SET_FTM(asap_num, ASAP_NUM, u32);
13245 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13246 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13247 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13248 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13249 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13250 #undef SET_FTM
13251
13252 nla_nest_end(msg, ftm_stats_attr);
13253
13254 genlmsg_end(msg, hdr);
13255 return genlmsg_reply(msg, info);
13256
13257 nla_put_failure:
13258 nlmsg_free(msg);
13259 return -ENOBUFS;
13260 }
13261
13262 #define NL80211_FLAG_NEED_WIPHY 0x01
13263 #define NL80211_FLAG_NEED_NETDEV 0x02
13264 #define NL80211_FLAG_NEED_RTNL 0x04
13265 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
13266 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
13267 NL80211_FLAG_CHECK_NETDEV_UP)
13268 #define NL80211_FLAG_NEED_WDEV 0x10
13269 /* If a netdev is associated, it must be UP, P2P must be started */
13270 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
13271 NL80211_FLAG_CHECK_NETDEV_UP)
13272 #define NL80211_FLAG_CLEAR_SKB 0x20
13273
13274 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13275 struct genl_info *info)
13276 {
13277 struct cfg80211_registered_device *rdev;
13278 struct wireless_dev *wdev;
13279 struct net_device *dev;
13280 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13281
13282 if (rtnl)
13283 rtnl_lock();
13284
13285 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13286 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13287 if (IS_ERR(rdev)) {
13288 if (rtnl)
13289 rtnl_unlock();
13290 return PTR_ERR(rdev);
13291 }
13292 info->user_ptr[0] = rdev;
13293 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13294 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13295 ASSERT_RTNL();
13296
13297 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13298 info->attrs);
13299 if (IS_ERR(wdev)) {
13300 if (rtnl)
13301 rtnl_unlock();
13302 return PTR_ERR(wdev);
13303 }
13304
13305 dev = wdev->netdev;
13306 rdev = wiphy_to_rdev(wdev->wiphy);
13307
13308 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13309 if (!dev) {
13310 if (rtnl)
13311 rtnl_unlock();
13312 return -EINVAL;
13313 }
13314
13315 info->user_ptr[1] = dev;
13316 } else {
13317 info->user_ptr[1] = wdev;
13318 }
13319
13320 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13321 !wdev_running(wdev)) {
13322 if (rtnl)
13323 rtnl_unlock();
13324 return -ENETDOWN;
13325 }
13326
13327 if (dev)
13328 dev_hold(dev);
13329
13330 info->user_ptr[0] = rdev;
13331 }
13332
13333 return 0;
13334 }
13335
13336 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13337 struct genl_info *info)
13338 {
13339 if (info->user_ptr[1]) {
13340 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13341 struct wireless_dev *wdev = info->user_ptr[1];
13342
13343 if (wdev->netdev)
13344 dev_put(wdev->netdev);
13345 } else {
13346 dev_put(info->user_ptr[1]);
13347 }
13348 }
13349
13350 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13351 rtnl_unlock();
13352
13353 /* If needed, clear the netlink message payload from the SKB
13354 * as it might contain key data that shouldn't stick around on
13355 * the heap after the SKB is freed. The netlink message header
13356 * is still needed for further processing, so leave it intact.
13357 */
13358 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13359 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13360
13361 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13362 }
13363 }
13364
13365 static const struct genl_ops nl80211_ops[] = {
13366 {
13367 .cmd = NL80211_CMD_GET_WIPHY,
13368 .doit = nl80211_get_wiphy,
13369 .dumpit = nl80211_dump_wiphy,
13370 .done = nl80211_dump_wiphy_done,
13371 .policy = nl80211_policy,
13372 /* can be retrieved by unprivileged users */
13373 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13374 NL80211_FLAG_NEED_RTNL,
13375 },
13376 {
13377 .cmd = NL80211_CMD_SET_WIPHY,
13378 .doit = nl80211_set_wiphy,
13379 .policy = nl80211_policy,
13380 .flags = GENL_UNS_ADMIN_PERM,
13381 .internal_flags = NL80211_FLAG_NEED_RTNL,
13382 },
13383 {
13384 .cmd = NL80211_CMD_GET_INTERFACE,
13385 .doit = nl80211_get_interface,
13386 .dumpit = nl80211_dump_interface,
13387 .policy = nl80211_policy,
13388 /* can be retrieved by unprivileged users */
13389 .internal_flags = NL80211_FLAG_NEED_WDEV |
13390 NL80211_FLAG_NEED_RTNL,
13391 },
13392 {
13393 .cmd = NL80211_CMD_SET_INTERFACE,
13394 .doit = nl80211_set_interface,
13395 .policy = nl80211_policy,
13396 .flags = GENL_UNS_ADMIN_PERM,
13397 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13398 NL80211_FLAG_NEED_RTNL,
13399 },
13400 {
13401 .cmd = NL80211_CMD_NEW_INTERFACE,
13402 .doit = nl80211_new_interface,
13403 .policy = nl80211_policy,
13404 .flags = GENL_UNS_ADMIN_PERM,
13405 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13406 NL80211_FLAG_NEED_RTNL,
13407 },
13408 {
13409 .cmd = NL80211_CMD_DEL_INTERFACE,
13410 .doit = nl80211_del_interface,
13411 .policy = nl80211_policy,
13412 .flags = GENL_UNS_ADMIN_PERM,
13413 .internal_flags = NL80211_FLAG_NEED_WDEV |
13414 NL80211_FLAG_NEED_RTNL,
13415 },
13416 {
13417 .cmd = NL80211_CMD_GET_KEY,
13418 .doit = nl80211_get_key,
13419 .policy = nl80211_policy,
13420 .flags = GENL_UNS_ADMIN_PERM,
13421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13422 NL80211_FLAG_NEED_RTNL,
13423 },
13424 {
13425 .cmd = NL80211_CMD_SET_KEY,
13426 .doit = nl80211_set_key,
13427 .policy = nl80211_policy,
13428 .flags = GENL_UNS_ADMIN_PERM,
13429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13430 NL80211_FLAG_NEED_RTNL |
13431 NL80211_FLAG_CLEAR_SKB,
13432 },
13433 {
13434 .cmd = NL80211_CMD_NEW_KEY,
13435 .doit = nl80211_new_key,
13436 .policy = nl80211_policy,
13437 .flags = GENL_UNS_ADMIN_PERM,
13438 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13439 NL80211_FLAG_NEED_RTNL |
13440 NL80211_FLAG_CLEAR_SKB,
13441 },
13442 {
13443 .cmd = NL80211_CMD_DEL_KEY,
13444 .doit = nl80211_del_key,
13445 .policy = nl80211_policy,
13446 .flags = GENL_UNS_ADMIN_PERM,
13447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13448 NL80211_FLAG_NEED_RTNL,
13449 },
13450 {
13451 .cmd = NL80211_CMD_SET_BEACON,
13452 .policy = nl80211_policy,
13453 .flags = GENL_UNS_ADMIN_PERM,
13454 .doit = nl80211_set_beacon,
13455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13456 NL80211_FLAG_NEED_RTNL,
13457 },
13458 {
13459 .cmd = NL80211_CMD_START_AP,
13460 .policy = nl80211_policy,
13461 .flags = GENL_UNS_ADMIN_PERM,
13462 .doit = nl80211_start_ap,
13463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13464 NL80211_FLAG_NEED_RTNL,
13465 },
13466 {
13467 .cmd = NL80211_CMD_STOP_AP,
13468 .policy = nl80211_policy,
13469 .flags = GENL_UNS_ADMIN_PERM,
13470 .doit = nl80211_stop_ap,
13471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13472 NL80211_FLAG_NEED_RTNL,
13473 },
13474 {
13475 .cmd = NL80211_CMD_GET_STATION,
13476 .doit = nl80211_get_station,
13477 .dumpit = nl80211_dump_station,
13478 .policy = nl80211_policy,
13479 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13480 NL80211_FLAG_NEED_RTNL,
13481 },
13482 {
13483 .cmd = NL80211_CMD_SET_STATION,
13484 .doit = nl80211_set_station,
13485 .policy = nl80211_policy,
13486 .flags = GENL_UNS_ADMIN_PERM,
13487 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13488 NL80211_FLAG_NEED_RTNL,
13489 },
13490 {
13491 .cmd = NL80211_CMD_NEW_STATION,
13492 .doit = nl80211_new_station,
13493 .policy = nl80211_policy,
13494 .flags = GENL_UNS_ADMIN_PERM,
13495 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13496 NL80211_FLAG_NEED_RTNL,
13497 },
13498 {
13499 .cmd = NL80211_CMD_DEL_STATION,
13500 .doit = nl80211_del_station,
13501 .policy = nl80211_policy,
13502 .flags = GENL_UNS_ADMIN_PERM,
13503 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13504 NL80211_FLAG_NEED_RTNL,
13505 },
13506 {
13507 .cmd = NL80211_CMD_GET_MPATH,
13508 .doit = nl80211_get_mpath,
13509 .dumpit = nl80211_dump_mpath,
13510 .policy = nl80211_policy,
13511 .flags = GENL_UNS_ADMIN_PERM,
13512 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13513 NL80211_FLAG_NEED_RTNL,
13514 },
13515 {
13516 .cmd = NL80211_CMD_GET_MPP,
13517 .doit = nl80211_get_mpp,
13518 .dumpit = nl80211_dump_mpp,
13519 .policy = nl80211_policy,
13520 .flags = GENL_UNS_ADMIN_PERM,
13521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13522 NL80211_FLAG_NEED_RTNL,
13523 },
13524 {
13525 .cmd = NL80211_CMD_SET_MPATH,
13526 .doit = nl80211_set_mpath,
13527 .policy = nl80211_policy,
13528 .flags = GENL_UNS_ADMIN_PERM,
13529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13530 NL80211_FLAG_NEED_RTNL,
13531 },
13532 {
13533 .cmd = NL80211_CMD_NEW_MPATH,
13534 .doit = nl80211_new_mpath,
13535 .policy = nl80211_policy,
13536 .flags = GENL_UNS_ADMIN_PERM,
13537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13538 NL80211_FLAG_NEED_RTNL,
13539 },
13540 {
13541 .cmd = NL80211_CMD_DEL_MPATH,
13542 .doit = nl80211_del_mpath,
13543 .policy = nl80211_policy,
13544 .flags = GENL_UNS_ADMIN_PERM,
13545 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13546 NL80211_FLAG_NEED_RTNL,
13547 },
13548 {
13549 .cmd = NL80211_CMD_SET_BSS,
13550 .doit = nl80211_set_bss,
13551 .policy = nl80211_policy,
13552 .flags = GENL_UNS_ADMIN_PERM,
13553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13554 NL80211_FLAG_NEED_RTNL,
13555 },
13556 {
13557 .cmd = NL80211_CMD_GET_REG,
13558 .doit = nl80211_get_reg_do,
13559 .dumpit = nl80211_get_reg_dump,
13560 .policy = nl80211_policy,
13561 .internal_flags = NL80211_FLAG_NEED_RTNL,
13562 /* can be retrieved by unprivileged users */
13563 },
13564 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13565 {
13566 .cmd = NL80211_CMD_SET_REG,
13567 .doit = nl80211_set_reg,
13568 .policy = nl80211_policy,
13569 .flags = GENL_ADMIN_PERM,
13570 .internal_flags = NL80211_FLAG_NEED_RTNL,
13571 },
13572 #endif
13573 {
13574 .cmd = NL80211_CMD_REQ_SET_REG,
13575 .doit = nl80211_req_set_reg,
13576 .policy = nl80211_policy,
13577 .flags = GENL_ADMIN_PERM,
13578 },
13579 {
13580 .cmd = NL80211_CMD_RELOAD_REGDB,
13581 .doit = nl80211_reload_regdb,
13582 .policy = nl80211_policy,
13583 .flags = GENL_ADMIN_PERM,
13584 },
13585 {
13586 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13587 .doit = nl80211_get_mesh_config,
13588 .policy = nl80211_policy,
13589 /* can be retrieved by unprivileged users */
13590 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13591 NL80211_FLAG_NEED_RTNL,
13592 },
13593 {
13594 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13595 .doit = nl80211_update_mesh_config,
13596 .policy = nl80211_policy,
13597 .flags = GENL_UNS_ADMIN_PERM,
13598 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13599 NL80211_FLAG_NEED_RTNL,
13600 },
13601 {
13602 .cmd = NL80211_CMD_TRIGGER_SCAN,
13603 .doit = nl80211_trigger_scan,
13604 .policy = nl80211_policy,
13605 .flags = GENL_UNS_ADMIN_PERM,
13606 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13607 NL80211_FLAG_NEED_RTNL,
13608 },
13609 {
13610 .cmd = NL80211_CMD_ABORT_SCAN,
13611 .doit = nl80211_abort_scan,
13612 .policy = nl80211_policy,
13613 .flags = GENL_UNS_ADMIN_PERM,
13614 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13615 NL80211_FLAG_NEED_RTNL,
13616 },
13617 {
13618 .cmd = NL80211_CMD_GET_SCAN,
13619 .policy = nl80211_policy,
13620 .dumpit = nl80211_dump_scan,
13621 },
13622 {
13623 .cmd = NL80211_CMD_START_SCHED_SCAN,
13624 .doit = nl80211_start_sched_scan,
13625 .policy = nl80211_policy,
13626 .flags = GENL_UNS_ADMIN_PERM,
13627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13628 NL80211_FLAG_NEED_RTNL,
13629 },
13630 {
13631 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13632 .doit = nl80211_stop_sched_scan,
13633 .policy = nl80211_policy,
13634 .flags = GENL_UNS_ADMIN_PERM,
13635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13636 NL80211_FLAG_NEED_RTNL,
13637 },
13638 {
13639 .cmd = NL80211_CMD_AUTHENTICATE,
13640 .doit = nl80211_authenticate,
13641 .policy = nl80211_policy,
13642 .flags = GENL_UNS_ADMIN_PERM,
13643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13644 NL80211_FLAG_NEED_RTNL |
13645 NL80211_FLAG_CLEAR_SKB,
13646 },
13647 {
13648 .cmd = NL80211_CMD_ASSOCIATE,
13649 .doit = nl80211_associate,
13650 .policy = nl80211_policy,
13651 .flags = GENL_UNS_ADMIN_PERM,
13652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13653 NL80211_FLAG_NEED_RTNL,
13654 },
13655 {
13656 .cmd = NL80211_CMD_DEAUTHENTICATE,
13657 .doit = nl80211_deauthenticate,
13658 .policy = nl80211_policy,
13659 .flags = GENL_UNS_ADMIN_PERM,
13660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13661 NL80211_FLAG_NEED_RTNL,
13662 },
13663 {
13664 .cmd = NL80211_CMD_DISASSOCIATE,
13665 .doit = nl80211_disassociate,
13666 .policy = nl80211_policy,
13667 .flags = GENL_UNS_ADMIN_PERM,
13668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13669 NL80211_FLAG_NEED_RTNL,
13670 },
13671 {
13672 .cmd = NL80211_CMD_JOIN_IBSS,
13673 .doit = nl80211_join_ibss,
13674 .policy = nl80211_policy,
13675 .flags = GENL_UNS_ADMIN_PERM,
13676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13677 NL80211_FLAG_NEED_RTNL,
13678 },
13679 {
13680 .cmd = NL80211_CMD_LEAVE_IBSS,
13681 .doit = nl80211_leave_ibss,
13682 .policy = nl80211_policy,
13683 .flags = GENL_UNS_ADMIN_PERM,
13684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13685 NL80211_FLAG_NEED_RTNL,
13686 },
13687 #ifdef CONFIG_NL80211_TESTMODE
13688 {
13689 .cmd = NL80211_CMD_TESTMODE,
13690 .doit = nl80211_testmode_do,
13691 .dumpit = nl80211_testmode_dump,
13692 .policy = nl80211_policy,
13693 .flags = GENL_UNS_ADMIN_PERM,
13694 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13695 NL80211_FLAG_NEED_RTNL,
13696 },
13697 #endif
13698 {
13699 .cmd = NL80211_CMD_CONNECT,
13700 .doit = nl80211_connect,
13701 .policy = nl80211_policy,
13702 .flags = GENL_UNS_ADMIN_PERM,
13703 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13704 NL80211_FLAG_NEED_RTNL,
13705 },
13706 {
13707 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13708 .doit = nl80211_update_connect_params,
13709 .policy = nl80211_policy,
13710 .flags = GENL_ADMIN_PERM,
13711 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13712 NL80211_FLAG_NEED_RTNL,
13713 },
13714 {
13715 .cmd = NL80211_CMD_DISCONNECT,
13716 .doit = nl80211_disconnect,
13717 .policy = nl80211_policy,
13718 .flags = GENL_UNS_ADMIN_PERM,
13719 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13720 NL80211_FLAG_NEED_RTNL,
13721 },
13722 {
13723 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13724 .doit = nl80211_wiphy_netns,
13725 .policy = nl80211_policy,
13726 .flags = GENL_UNS_ADMIN_PERM,
13727 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13728 NL80211_FLAG_NEED_RTNL,
13729 },
13730 {
13731 .cmd = NL80211_CMD_GET_SURVEY,
13732 .policy = nl80211_policy,
13733 .dumpit = nl80211_dump_survey,
13734 },
13735 {
13736 .cmd = NL80211_CMD_SET_PMKSA,
13737 .doit = nl80211_setdel_pmksa,
13738 .policy = nl80211_policy,
13739 .flags = GENL_UNS_ADMIN_PERM,
13740 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13741 NL80211_FLAG_NEED_RTNL,
13742 },
13743 {
13744 .cmd = NL80211_CMD_DEL_PMKSA,
13745 .doit = nl80211_setdel_pmksa,
13746 .policy = nl80211_policy,
13747 .flags = GENL_UNS_ADMIN_PERM,
13748 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13749 NL80211_FLAG_NEED_RTNL,
13750 },
13751 {
13752 .cmd = NL80211_CMD_FLUSH_PMKSA,
13753 .doit = nl80211_flush_pmksa,
13754 .policy = nl80211_policy,
13755 .flags = GENL_UNS_ADMIN_PERM,
13756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13757 NL80211_FLAG_NEED_RTNL,
13758 },
13759 {
13760 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13761 .doit = nl80211_remain_on_channel,
13762 .policy = nl80211_policy,
13763 .flags = GENL_UNS_ADMIN_PERM,
13764 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13765 NL80211_FLAG_NEED_RTNL,
13766 },
13767 {
13768 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13769 .doit = nl80211_cancel_remain_on_channel,
13770 .policy = nl80211_policy,
13771 .flags = GENL_UNS_ADMIN_PERM,
13772 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13773 NL80211_FLAG_NEED_RTNL,
13774 },
13775 {
13776 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13777 .doit = nl80211_set_tx_bitrate_mask,
13778 .policy = nl80211_policy,
13779 .flags = GENL_UNS_ADMIN_PERM,
13780 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13781 NL80211_FLAG_NEED_RTNL,
13782 },
13783 {
13784 .cmd = NL80211_CMD_REGISTER_FRAME,
13785 .doit = nl80211_register_mgmt,
13786 .policy = nl80211_policy,
13787 .flags = GENL_UNS_ADMIN_PERM,
13788 .internal_flags = NL80211_FLAG_NEED_WDEV |
13789 NL80211_FLAG_NEED_RTNL,
13790 },
13791 {
13792 .cmd = NL80211_CMD_FRAME,
13793 .doit = nl80211_tx_mgmt,
13794 .policy = nl80211_policy,
13795 .flags = GENL_UNS_ADMIN_PERM,
13796 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13797 NL80211_FLAG_NEED_RTNL,
13798 },
13799 {
13800 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13801 .doit = nl80211_tx_mgmt_cancel_wait,
13802 .policy = nl80211_policy,
13803 .flags = GENL_UNS_ADMIN_PERM,
13804 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13805 NL80211_FLAG_NEED_RTNL,
13806 },
13807 {
13808 .cmd = NL80211_CMD_SET_POWER_SAVE,
13809 .doit = nl80211_set_power_save,
13810 .policy = nl80211_policy,
13811 .flags = GENL_UNS_ADMIN_PERM,
13812 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13813 NL80211_FLAG_NEED_RTNL,
13814 },
13815 {
13816 .cmd = NL80211_CMD_GET_POWER_SAVE,
13817 .doit = nl80211_get_power_save,
13818 .policy = nl80211_policy,
13819 /* can be retrieved by unprivileged users */
13820 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13821 NL80211_FLAG_NEED_RTNL,
13822 },
13823 {
13824 .cmd = NL80211_CMD_SET_CQM,
13825 .doit = nl80211_set_cqm,
13826 .policy = nl80211_policy,
13827 .flags = GENL_UNS_ADMIN_PERM,
13828 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13829 NL80211_FLAG_NEED_RTNL,
13830 },
13831 {
13832 .cmd = NL80211_CMD_SET_CHANNEL,
13833 .doit = nl80211_set_channel,
13834 .policy = nl80211_policy,
13835 .flags = GENL_UNS_ADMIN_PERM,
13836 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13837 NL80211_FLAG_NEED_RTNL,
13838 },
13839 {
13840 .cmd = NL80211_CMD_SET_WDS_PEER,
13841 .doit = nl80211_set_wds_peer,
13842 .policy = nl80211_policy,
13843 .flags = GENL_UNS_ADMIN_PERM,
13844 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13845 NL80211_FLAG_NEED_RTNL,
13846 },
13847 {
13848 .cmd = NL80211_CMD_JOIN_MESH,
13849 .doit = nl80211_join_mesh,
13850 .policy = nl80211_policy,
13851 .flags = GENL_UNS_ADMIN_PERM,
13852 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13853 NL80211_FLAG_NEED_RTNL,
13854 },
13855 {
13856 .cmd = NL80211_CMD_LEAVE_MESH,
13857 .doit = nl80211_leave_mesh,
13858 .policy = nl80211_policy,
13859 .flags = GENL_UNS_ADMIN_PERM,
13860 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13861 NL80211_FLAG_NEED_RTNL,
13862 },
13863 {
13864 .cmd = NL80211_CMD_JOIN_OCB,
13865 .doit = nl80211_join_ocb,
13866 .policy = nl80211_policy,
13867 .flags = GENL_UNS_ADMIN_PERM,
13868 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13869 NL80211_FLAG_NEED_RTNL,
13870 },
13871 {
13872 .cmd = NL80211_CMD_LEAVE_OCB,
13873 .doit = nl80211_leave_ocb,
13874 .policy = nl80211_policy,
13875 .flags = GENL_UNS_ADMIN_PERM,
13876 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13877 NL80211_FLAG_NEED_RTNL,
13878 },
13879 #ifdef CONFIG_PM
13880 {
13881 .cmd = NL80211_CMD_GET_WOWLAN,
13882 .doit = nl80211_get_wowlan,
13883 .policy = nl80211_policy,
13884 /* can be retrieved by unprivileged users */
13885 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13886 NL80211_FLAG_NEED_RTNL,
13887 },
13888 {
13889 .cmd = NL80211_CMD_SET_WOWLAN,
13890 .doit = nl80211_set_wowlan,
13891 .policy = nl80211_policy,
13892 .flags = GENL_UNS_ADMIN_PERM,
13893 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13894 NL80211_FLAG_NEED_RTNL,
13895 },
13896 #endif
13897 {
13898 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13899 .doit = nl80211_set_rekey_data,
13900 .policy = nl80211_policy,
13901 .flags = GENL_UNS_ADMIN_PERM,
13902 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13903 NL80211_FLAG_NEED_RTNL |
13904 NL80211_FLAG_CLEAR_SKB,
13905 },
13906 {
13907 .cmd = NL80211_CMD_TDLS_MGMT,
13908 .doit = nl80211_tdls_mgmt,
13909 .policy = nl80211_policy,
13910 .flags = GENL_UNS_ADMIN_PERM,
13911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13912 NL80211_FLAG_NEED_RTNL,
13913 },
13914 {
13915 .cmd = NL80211_CMD_TDLS_OPER,
13916 .doit = nl80211_tdls_oper,
13917 .policy = nl80211_policy,
13918 .flags = GENL_UNS_ADMIN_PERM,
13919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13920 NL80211_FLAG_NEED_RTNL,
13921 },
13922 {
13923 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13924 .doit = nl80211_register_unexpected_frame,
13925 .policy = nl80211_policy,
13926 .flags = GENL_UNS_ADMIN_PERM,
13927 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13928 NL80211_FLAG_NEED_RTNL,
13929 },
13930 {
13931 .cmd = NL80211_CMD_PROBE_CLIENT,
13932 .doit = nl80211_probe_client,
13933 .policy = nl80211_policy,
13934 .flags = GENL_UNS_ADMIN_PERM,
13935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13936 NL80211_FLAG_NEED_RTNL,
13937 },
13938 {
13939 .cmd = NL80211_CMD_REGISTER_BEACONS,
13940 .doit = nl80211_register_beacons,
13941 .policy = nl80211_policy,
13942 .flags = GENL_UNS_ADMIN_PERM,
13943 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13944 NL80211_FLAG_NEED_RTNL,
13945 },
13946 {
13947 .cmd = NL80211_CMD_SET_NOACK_MAP,
13948 .doit = nl80211_set_noack_map,
13949 .policy = nl80211_policy,
13950 .flags = GENL_UNS_ADMIN_PERM,
13951 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13952 NL80211_FLAG_NEED_RTNL,
13953 },
13954 {
13955 .cmd = NL80211_CMD_START_P2P_DEVICE,
13956 .doit = nl80211_start_p2p_device,
13957 .policy = nl80211_policy,
13958 .flags = GENL_UNS_ADMIN_PERM,
13959 .internal_flags = NL80211_FLAG_NEED_WDEV |
13960 NL80211_FLAG_NEED_RTNL,
13961 },
13962 {
13963 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13964 .doit = nl80211_stop_p2p_device,
13965 .policy = nl80211_policy,
13966 .flags = GENL_UNS_ADMIN_PERM,
13967 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13968 NL80211_FLAG_NEED_RTNL,
13969 },
13970 {
13971 .cmd = NL80211_CMD_START_NAN,
13972 .doit = nl80211_start_nan,
13973 .policy = nl80211_policy,
13974 .flags = GENL_ADMIN_PERM,
13975 .internal_flags = NL80211_FLAG_NEED_WDEV |
13976 NL80211_FLAG_NEED_RTNL,
13977 },
13978 {
13979 .cmd = NL80211_CMD_STOP_NAN,
13980 .doit = nl80211_stop_nan,
13981 .policy = nl80211_policy,
13982 .flags = GENL_ADMIN_PERM,
13983 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13984 NL80211_FLAG_NEED_RTNL,
13985 },
13986 {
13987 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13988 .doit = nl80211_nan_add_func,
13989 .policy = nl80211_policy,
13990 .flags = GENL_ADMIN_PERM,
13991 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13992 NL80211_FLAG_NEED_RTNL,
13993 },
13994 {
13995 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13996 .doit = nl80211_nan_del_func,
13997 .policy = nl80211_policy,
13998 .flags = GENL_ADMIN_PERM,
13999 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14000 NL80211_FLAG_NEED_RTNL,
14001 },
14002 {
14003 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14004 .doit = nl80211_nan_change_config,
14005 .policy = nl80211_policy,
14006 .flags = GENL_ADMIN_PERM,
14007 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14008 NL80211_FLAG_NEED_RTNL,
14009 },
14010 {
14011 .cmd = NL80211_CMD_SET_MCAST_RATE,
14012 .doit = nl80211_set_mcast_rate,
14013 .policy = nl80211_policy,
14014 .flags = GENL_UNS_ADMIN_PERM,
14015 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14016 NL80211_FLAG_NEED_RTNL,
14017 },
14018 {
14019 .cmd = NL80211_CMD_SET_MAC_ACL,
14020 .doit = nl80211_set_mac_acl,
14021 .policy = nl80211_policy,
14022 .flags = GENL_UNS_ADMIN_PERM,
14023 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14024 NL80211_FLAG_NEED_RTNL,
14025 },
14026 {
14027 .cmd = NL80211_CMD_RADAR_DETECT,
14028 .doit = nl80211_start_radar_detection,
14029 .policy = nl80211_policy,
14030 .flags = GENL_UNS_ADMIN_PERM,
14031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14032 NL80211_FLAG_NEED_RTNL,
14033 },
14034 {
14035 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14036 .doit = nl80211_get_protocol_features,
14037 .policy = nl80211_policy,
14038 },
14039 {
14040 .cmd = NL80211_CMD_UPDATE_FT_IES,
14041 .doit = nl80211_update_ft_ies,
14042 .policy = nl80211_policy,
14043 .flags = GENL_UNS_ADMIN_PERM,
14044 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14045 NL80211_FLAG_NEED_RTNL,
14046 },
14047 {
14048 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14049 .doit = nl80211_crit_protocol_start,
14050 .policy = nl80211_policy,
14051 .flags = GENL_UNS_ADMIN_PERM,
14052 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14053 NL80211_FLAG_NEED_RTNL,
14054 },
14055 {
14056 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14057 .doit = nl80211_crit_protocol_stop,
14058 .policy = nl80211_policy,
14059 .flags = GENL_UNS_ADMIN_PERM,
14060 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14061 NL80211_FLAG_NEED_RTNL,
14062 },
14063 {
14064 .cmd = NL80211_CMD_GET_COALESCE,
14065 .doit = nl80211_get_coalesce,
14066 .policy = nl80211_policy,
14067 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14068 NL80211_FLAG_NEED_RTNL,
14069 },
14070 {
14071 .cmd = NL80211_CMD_SET_COALESCE,
14072 .doit = nl80211_set_coalesce,
14073 .policy = nl80211_policy,
14074 .flags = GENL_UNS_ADMIN_PERM,
14075 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14076 NL80211_FLAG_NEED_RTNL,
14077 },
14078 {
14079 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14080 .doit = nl80211_channel_switch,
14081 .policy = nl80211_policy,
14082 .flags = GENL_UNS_ADMIN_PERM,
14083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14084 NL80211_FLAG_NEED_RTNL,
14085 },
14086 {
14087 .cmd = NL80211_CMD_VENDOR,
14088 .doit = nl80211_vendor_cmd,
14089 .dumpit = nl80211_vendor_cmd_dump,
14090 .policy = nl80211_policy,
14091 .flags = GENL_UNS_ADMIN_PERM,
14092 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14093 NL80211_FLAG_NEED_RTNL,
14094 },
14095 {
14096 .cmd = NL80211_CMD_SET_QOS_MAP,
14097 .doit = nl80211_set_qos_map,
14098 .policy = nl80211_policy,
14099 .flags = GENL_UNS_ADMIN_PERM,
14100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14101 NL80211_FLAG_NEED_RTNL,
14102 },
14103 {
14104 .cmd = NL80211_CMD_ADD_TX_TS,
14105 .doit = nl80211_add_tx_ts,
14106 .policy = nl80211_policy,
14107 .flags = GENL_UNS_ADMIN_PERM,
14108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14109 NL80211_FLAG_NEED_RTNL,
14110 },
14111 {
14112 .cmd = NL80211_CMD_DEL_TX_TS,
14113 .doit = nl80211_del_tx_ts,
14114 .policy = nl80211_policy,
14115 .flags = GENL_UNS_ADMIN_PERM,
14116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14117 NL80211_FLAG_NEED_RTNL,
14118 },
14119 {
14120 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14121 .doit = nl80211_tdls_channel_switch,
14122 .policy = nl80211_policy,
14123 .flags = GENL_UNS_ADMIN_PERM,
14124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14125 NL80211_FLAG_NEED_RTNL,
14126 },
14127 {
14128 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14129 .doit = nl80211_tdls_cancel_channel_switch,
14130 .policy = nl80211_policy,
14131 .flags = GENL_UNS_ADMIN_PERM,
14132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14133 NL80211_FLAG_NEED_RTNL,
14134 },
14135 {
14136 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14137 .doit = nl80211_set_multicast_to_unicast,
14138 .policy = nl80211_policy,
14139 .flags = GENL_UNS_ADMIN_PERM,
14140 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14141 NL80211_FLAG_NEED_RTNL,
14142 },
14143 {
14144 .cmd = NL80211_CMD_SET_PMK,
14145 .doit = nl80211_set_pmk,
14146 .policy = nl80211_policy,
14147 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14148 NL80211_FLAG_NEED_RTNL,
14149 },
14150 {
14151 .cmd = NL80211_CMD_DEL_PMK,
14152 .doit = nl80211_del_pmk,
14153 .policy = nl80211_policy,
14154 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14155 NL80211_FLAG_NEED_RTNL,
14156 },
14157 {
14158 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14159 .doit = nl80211_external_auth,
14160 .policy = nl80211_policy,
14161 .flags = GENL_ADMIN_PERM,
14162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14163 NL80211_FLAG_NEED_RTNL,
14164 },
14165 {
14166 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14167 .doit = nl80211_tx_control_port,
14168 .policy = nl80211_policy,
14169 .flags = GENL_UNS_ADMIN_PERM,
14170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14171 NL80211_FLAG_NEED_RTNL,
14172 },
14173 {
14174 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14175 .doit = nl80211_get_ftm_responder_stats,
14176 .policy = nl80211_policy,
14177 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14178 NL80211_FLAG_NEED_RTNL,
14179 },
14180 {
14181 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14182 .doit = nl80211_pmsr_start,
14183 .policy = nl80211_policy,
14184 .flags = GENL_UNS_ADMIN_PERM,
14185 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14186 NL80211_FLAG_NEED_RTNL,
14187 },
14188 {
14189 .cmd = NL80211_CMD_NOTIFY_RADAR,
14190 .doit = nl80211_notify_radar_detection,
14191 .policy = nl80211_policy,
14192 .flags = GENL_UNS_ADMIN_PERM,
14193 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14194 NL80211_FLAG_NEED_RTNL,
14195 },
14196 };
14197
14198 static struct genl_family nl80211_fam __ro_after_init = {
14199 .name = NL80211_GENL_NAME, /* have users key off the name instead */
14200 .hdrsize = 0, /* no private header */
14201 .version = 1, /* no particular meaning now */
14202 .maxattr = NL80211_ATTR_MAX,
14203 .netnsok = true,
14204 .pre_doit = nl80211_pre_doit,
14205 .post_doit = nl80211_post_doit,
14206 .module = THIS_MODULE,
14207 .ops = nl80211_ops,
14208 .n_ops = ARRAY_SIZE(nl80211_ops),
14209 .mcgrps = nl80211_mcgrps,
14210 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14211 };
14212
14213 /* notification functions */
14214
14215 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14216 enum nl80211_commands cmd)
14217 {
14218 struct sk_buff *msg;
14219 struct nl80211_dump_wiphy_state state = {};
14220
14221 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14222 cmd != NL80211_CMD_DEL_WIPHY);
14223
14224 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14225 if (!msg)
14226 return;
14227
14228 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14229 nlmsg_free(msg);
14230 return;
14231 }
14232
14233 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14234 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14235 }
14236
14237 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14238 struct wireless_dev *wdev,
14239 enum nl80211_commands cmd)
14240 {
14241 struct sk_buff *msg;
14242
14243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14244 if (!msg)
14245 return;
14246
14247 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14248 nlmsg_free(msg);
14249 return;
14250 }
14251
14252 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14253 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14254 }
14255
14256 static int nl80211_add_scan_req(struct sk_buff *msg,
14257 struct cfg80211_registered_device *rdev)
14258 {
14259 struct cfg80211_scan_request *req = rdev->scan_req;
14260 struct nlattr *nest;
14261 int i;
14262
14263 if (WARN_ON(!req))
14264 return 0;
14265
14266 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
14267 if (!nest)
14268 goto nla_put_failure;
14269 for (i = 0; i < req->n_ssids; i++) {
14270 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14271 goto nla_put_failure;
14272 }
14273 nla_nest_end(msg, nest);
14274
14275 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14276 if (!nest)
14277 goto nla_put_failure;
14278 for (i = 0; i < req->n_channels; i++) {
14279 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14280 goto nla_put_failure;
14281 }
14282 nla_nest_end(msg, nest);
14283
14284 if (req->ie &&
14285 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14286 goto nla_put_failure;
14287
14288 if (req->flags &&
14289 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14290 goto nla_put_failure;
14291
14292 if (req->info.scan_start_tsf &&
14293 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14294 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14295 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14296 req->info.tsf_bssid)))
14297 goto nla_put_failure;
14298
14299 return 0;
14300 nla_put_failure:
14301 return -ENOBUFS;
14302 }
14303
14304 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14305 struct cfg80211_registered_device *rdev,
14306 struct wireless_dev *wdev,
14307 u32 portid, u32 seq, int flags,
14308 u32 cmd)
14309 {
14310 void *hdr;
14311
14312 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14313 if (!hdr)
14314 return -1;
14315
14316 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14317 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14318 wdev->netdev->ifindex)) ||
14319 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14320 NL80211_ATTR_PAD))
14321 goto nla_put_failure;
14322
14323 /* ignore errors and send incomplete event anyway */
14324 nl80211_add_scan_req(msg, rdev);
14325
14326 genlmsg_end(msg, hdr);
14327 return 0;
14328
14329 nla_put_failure:
14330 genlmsg_cancel(msg, hdr);
14331 return -EMSGSIZE;
14332 }
14333
14334 static int
14335 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14336 struct cfg80211_sched_scan_request *req, u32 cmd)
14337 {
14338 void *hdr;
14339
14340 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14341 if (!hdr)
14342 return -1;
14343
14344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14345 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14346 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14347 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14348 NL80211_ATTR_PAD))
14349 goto nla_put_failure;
14350
14351 genlmsg_end(msg, hdr);
14352 return 0;
14353
14354 nla_put_failure:
14355 genlmsg_cancel(msg, hdr);
14356 return -EMSGSIZE;
14357 }
14358
14359 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14360 struct wireless_dev *wdev)
14361 {
14362 struct sk_buff *msg;
14363
14364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14365 if (!msg)
14366 return;
14367
14368 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14369 NL80211_CMD_TRIGGER_SCAN) < 0) {
14370 nlmsg_free(msg);
14371 return;
14372 }
14373
14374 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14375 NL80211_MCGRP_SCAN, GFP_KERNEL);
14376 }
14377
14378 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14379 struct wireless_dev *wdev, bool aborted)
14380 {
14381 struct sk_buff *msg;
14382
14383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14384 if (!msg)
14385 return NULL;
14386
14387 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14388 aborted ? NL80211_CMD_SCAN_ABORTED :
14389 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14390 nlmsg_free(msg);
14391 return NULL;
14392 }
14393
14394 return msg;
14395 }
14396
14397 /* send message created by nl80211_build_scan_msg() */
14398 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14399 struct sk_buff *msg)
14400 {
14401 if (!msg)
14402 return;
14403
14404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14405 NL80211_MCGRP_SCAN, GFP_KERNEL);
14406 }
14407
14408 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14409 {
14410 struct sk_buff *msg;
14411
14412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14413 if (!msg)
14414 return;
14415
14416 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14417 nlmsg_free(msg);
14418 return;
14419 }
14420
14421 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14422 NL80211_MCGRP_SCAN, GFP_KERNEL);
14423 }
14424
14425 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14426 struct regulatory_request *request)
14427 {
14428 /* Userspace can always count this one always being set */
14429 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14430 goto nla_put_failure;
14431
14432 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14433 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14434 NL80211_REGDOM_TYPE_WORLD))
14435 goto nla_put_failure;
14436 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14437 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14438 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14439 goto nla_put_failure;
14440 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14441 request->intersect) {
14442 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14443 NL80211_REGDOM_TYPE_INTERSECTION))
14444 goto nla_put_failure;
14445 } else {
14446 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14447 NL80211_REGDOM_TYPE_COUNTRY) ||
14448 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14449 request->alpha2))
14450 goto nla_put_failure;
14451 }
14452
14453 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14454 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14455
14456 if (wiphy &&
14457 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14458 goto nla_put_failure;
14459
14460 if (wiphy &&
14461 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14462 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14463 goto nla_put_failure;
14464 }
14465
14466 return true;
14467
14468 nla_put_failure:
14469 return false;
14470 }
14471
14472 /*
14473 * This can happen on global regulatory changes or device specific settings
14474 * based on custom regulatory domains.
14475 */
14476 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14477 struct regulatory_request *request)
14478 {
14479 struct sk_buff *msg;
14480 void *hdr;
14481
14482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14483 if (!msg)
14484 return;
14485
14486 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14487 if (!hdr) {
14488 nlmsg_free(msg);
14489 return;
14490 }
14491
14492 if (nl80211_reg_change_event_fill(msg, request) == false)
14493 goto nla_put_failure;
14494
14495 genlmsg_end(msg, hdr);
14496
14497 rcu_read_lock();
14498 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14499 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14500 rcu_read_unlock();
14501
14502 return;
14503
14504 nla_put_failure:
14505 nlmsg_free(msg);
14506 }
14507
14508 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14509 struct net_device *netdev,
14510 const u8 *buf, size_t len,
14511 enum nl80211_commands cmd, gfp_t gfp,
14512 int uapsd_queues, const u8 *req_ies,
14513 size_t req_ies_len)
14514 {
14515 struct sk_buff *msg;
14516 void *hdr;
14517
14518 msg = nlmsg_new(100 + len + req_ies_len, gfp);
14519 if (!msg)
14520 return;
14521
14522 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14523 if (!hdr) {
14524 nlmsg_free(msg);
14525 return;
14526 }
14527
14528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14530 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14531 (req_ies &&
14532 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
14533 goto nla_put_failure;
14534
14535 if (uapsd_queues >= 0) {
14536 struct nlattr *nla_wmm =
14537 nla_nest_start(msg, NL80211_ATTR_STA_WME);
14538 if (!nla_wmm)
14539 goto nla_put_failure;
14540
14541 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14542 uapsd_queues))
14543 goto nla_put_failure;
14544
14545 nla_nest_end(msg, nla_wmm);
14546 }
14547
14548 genlmsg_end(msg, hdr);
14549
14550 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14551 NL80211_MCGRP_MLME, gfp);
14552 return;
14553
14554 nla_put_failure:
14555 nlmsg_free(msg);
14556 }
14557
14558 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14559 struct net_device *netdev, const u8 *buf,
14560 size_t len, gfp_t gfp)
14561 {
14562 nl80211_send_mlme_event(rdev, netdev, buf, len,
14563 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
14564 }
14565
14566 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14567 struct net_device *netdev, const u8 *buf,
14568 size_t len, gfp_t gfp, int uapsd_queues,
14569 const u8 *req_ies, size_t req_ies_len)
14570 {
14571 nl80211_send_mlme_event(rdev, netdev, buf, len,
14572 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
14573 req_ies, req_ies_len);
14574 }
14575
14576 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14577 struct net_device *netdev, const u8 *buf,
14578 size_t len, gfp_t gfp)
14579 {
14580 nl80211_send_mlme_event(rdev, netdev, buf, len,
14581 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
14582 }
14583
14584 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14585 struct net_device *netdev, const u8 *buf,
14586 size_t len, gfp_t gfp)
14587 {
14588 nl80211_send_mlme_event(rdev, netdev, buf, len,
14589 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
14590 }
14591
14592 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14593 size_t len)
14594 {
14595 struct wireless_dev *wdev = dev->ieee80211_ptr;
14596 struct wiphy *wiphy = wdev->wiphy;
14597 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14598 const struct ieee80211_mgmt *mgmt = (void *)buf;
14599 u32 cmd;
14600
14601 if (WARN_ON(len < 2))
14602 return;
14603
14604 if (ieee80211_is_deauth(mgmt->frame_control))
14605 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14606 else
14607 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14608
14609 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14610 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
14611 NULL, 0);
14612 }
14613 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14614
14615 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14616 struct net_device *netdev, int cmd,
14617 const u8 *addr, gfp_t gfp)
14618 {
14619 struct sk_buff *msg;
14620 void *hdr;
14621
14622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14623 if (!msg)
14624 return;
14625
14626 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14627 if (!hdr) {
14628 nlmsg_free(msg);
14629 return;
14630 }
14631
14632 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14633 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14634 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14635 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14636 goto nla_put_failure;
14637
14638 genlmsg_end(msg, hdr);
14639
14640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14641 NL80211_MCGRP_MLME, gfp);
14642 return;
14643
14644 nla_put_failure:
14645 nlmsg_free(msg);
14646 }
14647
14648 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14649 struct net_device *netdev, const u8 *addr,
14650 gfp_t gfp)
14651 {
14652 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14653 addr, gfp);
14654 }
14655
14656 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14657 struct net_device *netdev, const u8 *addr,
14658 gfp_t gfp)
14659 {
14660 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14661 addr, gfp);
14662 }
14663
14664 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14665 struct net_device *netdev,
14666 struct cfg80211_connect_resp_params *cr,
14667 gfp_t gfp)
14668 {
14669 struct sk_buff *msg;
14670 void *hdr;
14671
14672 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14673 cr->fils.kek_len + cr->fils.pmk_len +
14674 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14675 if (!msg)
14676 return;
14677
14678 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14679 if (!hdr) {
14680 nlmsg_free(msg);
14681 return;
14682 }
14683
14684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14685 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14686 (cr->bssid &&
14687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14688 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14689 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14690 cr->status) ||
14691 (cr->status < 0 &&
14692 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14693 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14694 cr->timeout_reason))) ||
14695 (cr->req_ie &&
14696 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14697 (cr->resp_ie &&
14698 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14699 cr->resp_ie)) ||
14700 (cr->fils.update_erp_next_seq_num &&
14701 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14702 cr->fils.erp_next_seq_num)) ||
14703 (cr->status == WLAN_STATUS_SUCCESS &&
14704 ((cr->fils.kek &&
14705 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14706 cr->fils.kek)) ||
14707 (cr->fils.pmk &&
14708 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14709 (cr->fils.pmkid &&
14710 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14711 goto nla_put_failure;
14712
14713 genlmsg_end(msg, hdr);
14714
14715 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14716 NL80211_MCGRP_MLME, gfp);
14717 return;
14718
14719 nla_put_failure:
14720 nlmsg_free(msg);
14721 }
14722
14723 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14724 struct net_device *netdev,
14725 struct cfg80211_roam_info *info, gfp_t gfp)
14726 {
14727 struct sk_buff *msg;
14728 void *hdr;
14729 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14730
14731 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14732 info->fils.kek_len + info->fils.pmk_len +
14733 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14734 if (!msg)
14735 return;
14736
14737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14738 if (!hdr) {
14739 nlmsg_free(msg);
14740 return;
14741 }
14742
14743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14744 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14745 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14746 (info->req_ie &&
14747 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14748 info->req_ie)) ||
14749 (info->resp_ie &&
14750 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14751 info->resp_ie)) ||
14752 (info->fils.update_erp_next_seq_num &&
14753 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14754 info->fils.erp_next_seq_num)) ||
14755 (info->fils.kek &&
14756 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14757 info->fils.kek)) ||
14758 (info->fils.pmk &&
14759 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14760 (info->fils.pmkid &&
14761 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14762 goto nla_put_failure;
14763
14764 genlmsg_end(msg, hdr);
14765
14766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14767 NL80211_MCGRP_MLME, gfp);
14768 return;
14769
14770 nla_put_failure:
14771 nlmsg_free(msg);
14772 }
14773
14774 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14775 struct net_device *netdev, const u8 *bssid)
14776 {
14777 struct sk_buff *msg;
14778 void *hdr;
14779
14780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14781 if (!msg)
14782 return;
14783
14784 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14785 if (!hdr) {
14786 nlmsg_free(msg);
14787 return;
14788 }
14789
14790 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14791 goto nla_put_failure;
14792
14793 genlmsg_end(msg, hdr);
14794
14795 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14796 NL80211_MCGRP_MLME, GFP_KERNEL);
14797 return;
14798
14799 nla_put_failure:
14800 nlmsg_free(msg);
14801 }
14802
14803 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14804 struct net_device *netdev, u16 reason,
14805 const u8 *ie, size_t ie_len, bool from_ap)
14806 {
14807 struct sk_buff *msg;
14808 void *hdr;
14809
14810 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14811 if (!msg)
14812 return;
14813
14814 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14815 if (!hdr) {
14816 nlmsg_free(msg);
14817 return;
14818 }
14819
14820 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14821 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14822 (reason &&
14823 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14824 (from_ap &&
14825 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14826 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14827 goto nla_put_failure;
14828
14829 genlmsg_end(msg, hdr);
14830
14831 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14832 NL80211_MCGRP_MLME, GFP_KERNEL);
14833 return;
14834
14835 nla_put_failure:
14836 nlmsg_free(msg);
14837 }
14838
14839 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14840 struct net_device *netdev, const u8 *bssid,
14841 gfp_t gfp)
14842 {
14843 struct sk_buff *msg;
14844 void *hdr;
14845
14846 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14847 if (!msg)
14848 return;
14849
14850 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14851 if (!hdr) {
14852 nlmsg_free(msg);
14853 return;
14854 }
14855
14856 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14857 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14858 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14859 goto nla_put_failure;
14860
14861 genlmsg_end(msg, hdr);
14862
14863 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14864 NL80211_MCGRP_MLME, gfp);
14865 return;
14866
14867 nla_put_failure:
14868 nlmsg_free(msg);
14869 }
14870
14871 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14872 const u8 *ie, u8 ie_len,
14873 int sig_dbm, gfp_t gfp)
14874 {
14875 struct wireless_dev *wdev = dev->ieee80211_ptr;
14876 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14877 struct sk_buff *msg;
14878 void *hdr;
14879
14880 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14881 return;
14882
14883 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14884
14885 msg = nlmsg_new(100 + ie_len, gfp);
14886 if (!msg)
14887 return;
14888
14889 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14890 if (!hdr) {
14891 nlmsg_free(msg);
14892 return;
14893 }
14894
14895 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14896 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14897 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14898 (ie_len && ie &&
14899 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
14900 (sig_dbm &&
14901 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
14902 goto nla_put_failure;
14903
14904 genlmsg_end(msg, hdr);
14905
14906 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14907 NL80211_MCGRP_MLME, gfp);
14908 return;
14909
14910 nla_put_failure:
14911 nlmsg_free(msg);
14912 }
14913 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14914
14915 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14916 struct net_device *netdev, const u8 *addr,
14917 enum nl80211_key_type key_type, int key_id,
14918 const u8 *tsc, gfp_t gfp)
14919 {
14920 struct sk_buff *msg;
14921 void *hdr;
14922
14923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14924 if (!msg)
14925 return;
14926
14927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14928 if (!hdr) {
14929 nlmsg_free(msg);
14930 return;
14931 }
14932
14933 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14934 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14935 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14936 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14937 (key_id != -1 &&
14938 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14939 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14940 goto nla_put_failure;
14941
14942 genlmsg_end(msg, hdr);
14943
14944 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14945 NL80211_MCGRP_MLME, gfp);
14946 return;
14947
14948 nla_put_failure:
14949 nlmsg_free(msg);
14950 }
14951
14952 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14953 struct ieee80211_channel *channel_before,
14954 struct ieee80211_channel *channel_after)
14955 {
14956 struct sk_buff *msg;
14957 void *hdr;
14958 struct nlattr *nl_freq;
14959
14960 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14961 if (!msg)
14962 return;
14963
14964 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14965 if (!hdr) {
14966 nlmsg_free(msg);
14967 return;
14968 }
14969
14970 /*
14971 * Since we are applying the beacon hint to a wiphy we know its
14972 * wiphy_idx is valid
14973 */
14974 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14975 goto nla_put_failure;
14976
14977 /* Before */
14978 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14979 if (!nl_freq)
14980 goto nla_put_failure;
14981
14982 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14983 goto nla_put_failure;
14984 nla_nest_end(msg, nl_freq);
14985
14986 /* After */
14987 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14988 if (!nl_freq)
14989 goto nla_put_failure;
14990
14991 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14992 goto nla_put_failure;
14993 nla_nest_end(msg, nl_freq);
14994
14995 genlmsg_end(msg, hdr);
14996
14997 rcu_read_lock();
14998 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14999 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15000 rcu_read_unlock();
15001
15002 return;
15003
15004 nla_put_failure:
15005 nlmsg_free(msg);
15006 }
15007
15008 static void nl80211_send_remain_on_chan_event(
15009 int cmd, struct cfg80211_registered_device *rdev,
15010 struct wireless_dev *wdev, u64 cookie,
15011 struct ieee80211_channel *chan,
15012 unsigned int duration, gfp_t gfp)
15013 {
15014 struct sk_buff *msg;
15015 void *hdr;
15016
15017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15018 if (!msg)
15019 return;
15020
15021 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15022 if (!hdr) {
15023 nlmsg_free(msg);
15024 return;
15025 }
15026
15027 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15028 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15029 wdev->netdev->ifindex)) ||
15030 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15031 NL80211_ATTR_PAD) ||
15032 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15033 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15034 NL80211_CHAN_NO_HT) ||
15035 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15036 NL80211_ATTR_PAD))
15037 goto nla_put_failure;
15038
15039 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15040 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15041 goto nla_put_failure;
15042
15043 genlmsg_end(msg, hdr);
15044
15045 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15046 NL80211_MCGRP_MLME, gfp);
15047 return;
15048
15049 nla_put_failure:
15050 nlmsg_free(msg);
15051 }
15052
15053 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15054 struct ieee80211_channel *chan,
15055 unsigned int duration, gfp_t gfp)
15056 {
15057 struct wiphy *wiphy = wdev->wiphy;
15058 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15059
15060 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15061 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15062 rdev, wdev, cookie, chan,
15063 duration, gfp);
15064 }
15065 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15066
15067 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15068 struct ieee80211_channel *chan,
15069 gfp_t gfp)
15070 {
15071 struct wiphy *wiphy = wdev->wiphy;
15072 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15073
15074 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15075 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15076 rdev, wdev, cookie, chan, 0, gfp);
15077 }
15078 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15079
15080 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15081 struct station_info *sinfo, gfp_t gfp)
15082 {
15083 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15084 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15085 struct sk_buff *msg;
15086
15087 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15088
15089 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15090 if (!msg)
15091 return;
15092
15093 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15094 rdev, dev, mac_addr, sinfo) < 0) {
15095 nlmsg_free(msg);
15096 return;
15097 }
15098
15099 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15100 NL80211_MCGRP_MLME, gfp);
15101 }
15102 EXPORT_SYMBOL(cfg80211_new_sta);
15103
15104 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15105 struct station_info *sinfo, gfp_t gfp)
15106 {
15107 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15108 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15109 struct sk_buff *msg;
15110 struct station_info empty_sinfo = {};
15111
15112 if (!sinfo)
15113 sinfo = &empty_sinfo;
15114
15115 trace_cfg80211_del_sta(dev, mac_addr);
15116
15117 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15118 if (!msg) {
15119 cfg80211_sinfo_release_content(sinfo);
15120 return;
15121 }
15122
15123 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15124 rdev, dev, mac_addr, sinfo) < 0) {
15125 nlmsg_free(msg);
15126 return;
15127 }
15128
15129 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15130 NL80211_MCGRP_MLME, gfp);
15131 }
15132 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15133
15134 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15135 enum nl80211_connect_failed_reason reason,
15136 gfp_t gfp)
15137 {
15138 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15139 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15140 struct sk_buff *msg;
15141 void *hdr;
15142
15143 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15144 if (!msg)
15145 return;
15146
15147 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15148 if (!hdr) {
15149 nlmsg_free(msg);
15150 return;
15151 }
15152
15153 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15154 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15155 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15156 goto nla_put_failure;
15157
15158 genlmsg_end(msg, hdr);
15159
15160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15161 NL80211_MCGRP_MLME, gfp);
15162 return;
15163
15164 nla_put_failure:
15165 nlmsg_free(msg);
15166 }
15167 EXPORT_SYMBOL(cfg80211_conn_failed);
15168
15169 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15170 const u8 *addr, gfp_t gfp)
15171 {
15172 struct wireless_dev *wdev = dev->ieee80211_ptr;
15173 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15174 struct sk_buff *msg;
15175 void *hdr;
15176 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15177
15178 if (!nlportid)
15179 return false;
15180
15181 msg = nlmsg_new(100, gfp);
15182 if (!msg)
15183 return true;
15184
15185 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15186 if (!hdr) {
15187 nlmsg_free(msg);
15188 return true;
15189 }
15190
15191 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15192 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15193 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15194 goto nla_put_failure;
15195
15196 genlmsg_end(msg, hdr);
15197 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15198 return true;
15199
15200 nla_put_failure:
15201 nlmsg_free(msg);
15202 return true;
15203 }
15204
15205 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15206 const u8 *addr, gfp_t gfp)
15207 {
15208 struct wireless_dev *wdev = dev->ieee80211_ptr;
15209 bool ret;
15210
15211 trace_cfg80211_rx_spurious_frame(dev, addr);
15212
15213 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15214 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15215 trace_cfg80211_return_bool(false);
15216 return false;
15217 }
15218 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15219 addr, gfp);
15220 trace_cfg80211_return_bool(ret);
15221 return ret;
15222 }
15223 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15224
15225 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15226 const u8 *addr, gfp_t gfp)
15227 {
15228 struct wireless_dev *wdev = dev->ieee80211_ptr;
15229 bool ret;
15230
15231 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15232
15233 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15234 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15235 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15236 trace_cfg80211_return_bool(false);
15237 return false;
15238 }
15239 ret = __nl80211_unexpected_frame(dev,
15240 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15241 addr, gfp);
15242 trace_cfg80211_return_bool(ret);
15243 return ret;
15244 }
15245 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15246
15247 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15248 struct wireless_dev *wdev, u32 nlportid,
15249 int freq, int sig_dbm,
15250 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15251 {
15252 struct net_device *netdev = wdev->netdev;
15253 struct sk_buff *msg;
15254 void *hdr;
15255
15256 msg = nlmsg_new(100 + len, gfp);
15257 if (!msg)
15258 return -ENOMEM;
15259
15260 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15261 if (!hdr) {
15262 nlmsg_free(msg);
15263 return -ENOMEM;
15264 }
15265
15266 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15267 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15268 netdev->ifindex)) ||
15269 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15270 NL80211_ATTR_PAD) ||
15271 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15272 (sig_dbm &&
15273 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15274 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15275 (flags &&
15276 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15277 goto nla_put_failure;
15278
15279 genlmsg_end(msg, hdr);
15280
15281 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15282
15283 nla_put_failure:
15284 nlmsg_free(msg);
15285 return -ENOBUFS;
15286 }
15287
15288 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15289 const u8 *buf, size_t len, bool ack, gfp_t gfp)
15290 {
15291 struct wiphy *wiphy = wdev->wiphy;
15292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15293 struct net_device *netdev = wdev->netdev;
15294 struct sk_buff *msg;
15295 void *hdr;
15296
15297 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15298
15299 msg = nlmsg_new(100 + len, gfp);
15300 if (!msg)
15301 return;
15302
15303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15304 if (!hdr) {
15305 nlmsg_free(msg);
15306 return;
15307 }
15308
15309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15310 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15311 netdev->ifindex)) ||
15312 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15313 NL80211_ATTR_PAD) ||
15314 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15315 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15316 NL80211_ATTR_PAD) ||
15317 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15318 goto nla_put_failure;
15319
15320 genlmsg_end(msg, hdr);
15321
15322 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15323 NL80211_MCGRP_MLME, gfp);
15324 return;
15325
15326 nla_put_failure:
15327 nlmsg_free(msg);
15328 }
15329 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15330
15331 static int __nl80211_rx_control_port(struct net_device *dev,
15332 struct sk_buff *skb,
15333 bool unencrypted, gfp_t gfp)
15334 {
15335 struct wireless_dev *wdev = dev->ieee80211_ptr;
15336 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15337 struct ethhdr *ehdr = eth_hdr(skb);
15338 const u8 *addr = ehdr->h_source;
15339 u16 proto = be16_to_cpu(skb->protocol);
15340 struct sk_buff *msg;
15341 void *hdr;
15342 struct nlattr *frame;
15343
15344 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15345
15346 if (!nlportid)
15347 return -ENOENT;
15348
15349 msg = nlmsg_new(100 + skb->len, gfp);
15350 if (!msg)
15351 return -ENOMEM;
15352
15353 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15354 if (!hdr) {
15355 nlmsg_free(msg);
15356 return -ENOBUFS;
15357 }
15358
15359 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15360 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15361 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15362 NL80211_ATTR_PAD) ||
15363 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15364 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15365 (unencrypted && nla_put_flag(msg,
15366 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15367 goto nla_put_failure;
15368
15369 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15370 if (!frame)
15371 goto nla_put_failure;
15372
15373 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15374 genlmsg_end(msg, hdr);
15375
15376 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15377
15378 nla_put_failure:
15379 nlmsg_free(msg);
15380 return -ENOBUFS;
15381 }
15382
15383 bool cfg80211_rx_control_port(struct net_device *dev,
15384 struct sk_buff *skb, bool unencrypted)
15385 {
15386 int ret;
15387
15388 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15389 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15390 trace_cfg80211_return_bool(ret == 0);
15391 return ret == 0;
15392 }
15393 EXPORT_SYMBOL(cfg80211_rx_control_port);
15394
15395 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15396 const char *mac, gfp_t gfp)
15397 {
15398 struct wireless_dev *wdev = dev->ieee80211_ptr;
15399 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15400 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15401 void **cb;
15402
15403 if (!msg)
15404 return NULL;
15405
15406 cb = (void **)msg->cb;
15407
15408 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15409 if (!cb[0]) {
15410 nlmsg_free(msg);
15411 return NULL;
15412 }
15413
15414 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15415 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15416 goto nla_put_failure;
15417
15418 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15419 goto nla_put_failure;
15420
15421 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15422 if (!cb[1])
15423 goto nla_put_failure;
15424
15425 cb[2] = rdev;
15426
15427 return msg;
15428 nla_put_failure:
15429 nlmsg_free(msg);
15430 return NULL;
15431 }
15432
15433 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15434 {
15435 void **cb = (void **)msg->cb;
15436 struct cfg80211_registered_device *rdev = cb[2];
15437
15438 nla_nest_end(msg, cb[1]);
15439 genlmsg_end(msg, cb[0]);
15440
15441 memset(msg->cb, 0, sizeof(msg->cb));
15442
15443 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15444 NL80211_MCGRP_MLME, gfp);
15445 }
15446
15447 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15448 enum nl80211_cqm_rssi_threshold_event rssi_event,
15449 s32 rssi_level, gfp_t gfp)
15450 {
15451 struct sk_buff *msg;
15452 struct wireless_dev *wdev = dev->ieee80211_ptr;
15453 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15454
15455 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15456
15457 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15458 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15459 return;
15460
15461 if (wdev->cqm_config) {
15462 wdev->cqm_config->last_rssi_event_value = rssi_level;
15463
15464 cfg80211_cqm_rssi_update(rdev, dev);
15465
15466 if (rssi_level == 0)
15467 rssi_level = wdev->cqm_config->last_rssi_event_value;
15468 }
15469
15470 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15471 if (!msg)
15472 return;
15473
15474 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15475 rssi_event))
15476 goto nla_put_failure;
15477
15478 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15479 rssi_level))
15480 goto nla_put_failure;
15481
15482 cfg80211_send_cqm(msg, gfp);
15483
15484 return;
15485
15486 nla_put_failure:
15487 nlmsg_free(msg);
15488 }
15489 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15490
15491 void cfg80211_cqm_txe_notify(struct net_device *dev,
15492 const u8 *peer, u32 num_packets,
15493 u32 rate, u32 intvl, gfp_t gfp)
15494 {
15495 struct sk_buff *msg;
15496
15497 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15498 if (!msg)
15499 return;
15500
15501 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15502 goto nla_put_failure;
15503
15504 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15505 goto nla_put_failure;
15506
15507 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15508 goto nla_put_failure;
15509
15510 cfg80211_send_cqm(msg, gfp);
15511 return;
15512
15513 nla_put_failure:
15514 nlmsg_free(msg);
15515 }
15516 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15517
15518 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15519 const u8 *peer, u32 num_packets, gfp_t gfp)
15520 {
15521 struct sk_buff *msg;
15522
15523 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15524
15525 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15526 if (!msg)
15527 return;
15528
15529 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15530 goto nla_put_failure;
15531
15532 cfg80211_send_cqm(msg, gfp);
15533 return;
15534
15535 nla_put_failure:
15536 nlmsg_free(msg);
15537 }
15538 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15539
15540 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15541 {
15542 struct sk_buff *msg;
15543
15544 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15545 if (!msg)
15546 return;
15547
15548 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15549 goto nla_put_failure;
15550
15551 cfg80211_send_cqm(msg, gfp);
15552 return;
15553
15554 nla_put_failure:
15555 nlmsg_free(msg);
15556 }
15557 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15558
15559 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15560 struct net_device *netdev, const u8 *bssid,
15561 const u8 *replay_ctr, gfp_t gfp)
15562 {
15563 struct sk_buff *msg;
15564 struct nlattr *rekey_attr;
15565 void *hdr;
15566
15567 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15568 if (!msg)
15569 return;
15570
15571 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15572 if (!hdr) {
15573 nlmsg_free(msg);
15574 return;
15575 }
15576
15577 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15578 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15579 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15580 goto nla_put_failure;
15581
15582 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15583 if (!rekey_attr)
15584 goto nla_put_failure;
15585
15586 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15587 NL80211_REPLAY_CTR_LEN, replay_ctr))
15588 goto nla_put_failure;
15589
15590 nla_nest_end(msg, rekey_attr);
15591
15592 genlmsg_end(msg, hdr);
15593
15594 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15595 NL80211_MCGRP_MLME, gfp);
15596 return;
15597
15598 nla_put_failure:
15599 nlmsg_free(msg);
15600 }
15601
15602 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15603 const u8 *replay_ctr, gfp_t gfp)
15604 {
15605 struct wireless_dev *wdev = dev->ieee80211_ptr;
15606 struct wiphy *wiphy = wdev->wiphy;
15607 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15608
15609 trace_cfg80211_gtk_rekey_notify(dev, bssid);
15610 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15611 }
15612 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15613
15614 static void
15615 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15616 struct net_device *netdev, int index,
15617 const u8 *bssid, bool preauth, gfp_t gfp)
15618 {
15619 struct sk_buff *msg;
15620 struct nlattr *attr;
15621 void *hdr;
15622
15623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15624 if (!msg)
15625 return;
15626
15627 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15628 if (!hdr) {
15629 nlmsg_free(msg);
15630 return;
15631 }
15632
15633 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15634 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15635 goto nla_put_failure;
15636
15637 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15638 if (!attr)
15639 goto nla_put_failure;
15640
15641 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15642 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15643 (preauth &&
15644 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15645 goto nla_put_failure;
15646
15647 nla_nest_end(msg, attr);
15648
15649 genlmsg_end(msg, hdr);
15650
15651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15652 NL80211_MCGRP_MLME, gfp);
15653 return;
15654
15655 nla_put_failure:
15656 nlmsg_free(msg);
15657 }
15658
15659 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15660 const u8 *bssid, bool preauth, gfp_t gfp)
15661 {
15662 struct wireless_dev *wdev = dev->ieee80211_ptr;
15663 struct wiphy *wiphy = wdev->wiphy;
15664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15665
15666 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15667 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15668 }
15669 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15670
15671 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15672 struct net_device *netdev,
15673 struct cfg80211_chan_def *chandef,
15674 gfp_t gfp,
15675 enum nl80211_commands notif,
15676 u8 count)
15677 {
15678 struct sk_buff *msg;
15679 void *hdr;
15680
15681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15682 if (!msg)
15683 return;
15684
15685 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15686 if (!hdr) {
15687 nlmsg_free(msg);
15688 return;
15689 }
15690
15691 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15692 goto nla_put_failure;
15693
15694 if (nl80211_send_chandef(msg, chandef))
15695 goto nla_put_failure;
15696
15697 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15698 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15699 goto nla_put_failure;
15700
15701 genlmsg_end(msg, hdr);
15702
15703 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15704 NL80211_MCGRP_MLME, gfp);
15705 return;
15706
15707 nla_put_failure:
15708 nlmsg_free(msg);
15709 }
15710
15711 void cfg80211_ch_switch_notify(struct net_device *dev,
15712 struct cfg80211_chan_def *chandef)
15713 {
15714 struct wireless_dev *wdev = dev->ieee80211_ptr;
15715 struct wiphy *wiphy = wdev->wiphy;
15716 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15717
15718 ASSERT_WDEV_LOCK(wdev);
15719
15720 trace_cfg80211_ch_switch_notify(dev, chandef);
15721
15722 wdev->chandef = *chandef;
15723 wdev->preset_chandef = *chandef;
15724 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15725 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15726 }
15727 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15728
15729 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15730 struct cfg80211_chan_def *chandef,
15731 u8 count)
15732 {
15733 struct wireless_dev *wdev = dev->ieee80211_ptr;
15734 struct wiphy *wiphy = wdev->wiphy;
15735 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15736
15737 trace_cfg80211_ch_switch_started_notify(dev, chandef);
15738
15739 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15740 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15741 }
15742 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15743
15744 void
15745 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15746 const struct cfg80211_chan_def *chandef,
15747 enum nl80211_radar_event event,
15748 struct net_device *netdev, gfp_t gfp)
15749 {
15750 struct sk_buff *msg;
15751 void *hdr;
15752
15753 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15754 if (!msg)
15755 return;
15756
15757 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15758 if (!hdr) {
15759 nlmsg_free(msg);
15760 return;
15761 }
15762
15763 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15764 goto nla_put_failure;
15765
15766 /* NOP and radar events don't need a netdev parameter */
15767 if (netdev) {
15768 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15769
15770 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15771 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15772 NL80211_ATTR_PAD))
15773 goto nla_put_failure;
15774 }
15775
15776 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15777 goto nla_put_failure;
15778
15779 if (nl80211_send_chandef(msg, chandef))
15780 goto nla_put_failure;
15781
15782 genlmsg_end(msg, hdr);
15783
15784 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15785 NL80211_MCGRP_MLME, gfp);
15786 return;
15787
15788 nla_put_failure:
15789 nlmsg_free(msg);
15790 }
15791
15792 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15793 struct sta_opmode_info *sta_opmode,
15794 gfp_t gfp)
15795 {
15796 struct sk_buff *msg;
15797 struct wireless_dev *wdev = dev->ieee80211_ptr;
15798 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15799 void *hdr;
15800
15801 if (WARN_ON(!mac))
15802 return;
15803
15804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15805 if (!msg)
15806 return;
15807
15808 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15809 if (!hdr) {
15810 nlmsg_free(msg);
15811 return;
15812 }
15813
15814 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15815 goto nla_put_failure;
15816
15817 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15818 goto nla_put_failure;
15819
15820 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15821 goto nla_put_failure;
15822
15823 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15824 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15825 goto nla_put_failure;
15826
15827 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15828 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15829 goto nla_put_failure;
15830
15831 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15832 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15833 goto nla_put_failure;
15834
15835 genlmsg_end(msg, hdr);
15836
15837 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15838 NL80211_MCGRP_MLME, gfp);
15839
15840 return;
15841
15842 nla_put_failure:
15843 nlmsg_free(msg);
15844 }
15845 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15846
15847 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15848 u64 cookie, bool acked, s32 ack_signal,
15849 bool is_valid_ack_signal, gfp_t gfp)
15850 {
15851 struct wireless_dev *wdev = dev->ieee80211_ptr;
15852 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15853 struct sk_buff *msg;
15854 void *hdr;
15855
15856 trace_cfg80211_probe_status(dev, addr, cookie, acked);
15857
15858 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15859
15860 if (!msg)
15861 return;
15862
15863 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15864 if (!hdr) {
15865 nlmsg_free(msg);
15866 return;
15867 }
15868
15869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15871 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15872 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15873 NL80211_ATTR_PAD) ||
15874 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15875 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15876 ack_signal)))
15877 goto nla_put_failure;
15878
15879 genlmsg_end(msg, hdr);
15880
15881 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15882 NL80211_MCGRP_MLME, gfp);
15883 return;
15884
15885 nla_put_failure:
15886 nlmsg_free(msg);
15887 }
15888 EXPORT_SYMBOL(cfg80211_probe_status);
15889
15890 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15891 const u8 *frame, size_t len,
15892 int freq, int sig_dbm)
15893 {
15894 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15895 struct sk_buff *msg;
15896 void *hdr;
15897 struct cfg80211_beacon_registration *reg;
15898
15899 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15900
15901 spin_lock_bh(&rdev->beacon_registrations_lock);
15902 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15903 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15904 if (!msg) {
15905 spin_unlock_bh(&rdev->beacon_registrations_lock);
15906 return;
15907 }
15908
15909 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15910 if (!hdr)
15911 goto nla_put_failure;
15912
15913 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15914 (freq &&
15915 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15916 (sig_dbm &&
15917 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15918 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15919 goto nla_put_failure;
15920
15921 genlmsg_end(msg, hdr);
15922
15923 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15924 }
15925 spin_unlock_bh(&rdev->beacon_registrations_lock);
15926 return;
15927
15928 nla_put_failure:
15929 spin_unlock_bh(&rdev->beacon_registrations_lock);
15930 nlmsg_free(msg);
15931 }
15932 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15933
15934 #ifdef CONFIG_PM
15935 static int cfg80211_net_detect_results(struct sk_buff *msg,
15936 struct cfg80211_wowlan_wakeup *wakeup)
15937 {
15938 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15939 struct nlattr *nl_results, *nl_match, *nl_freqs;
15940 int i, j;
15941
15942 nl_results = nla_nest_start(
15943 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15944 if (!nl_results)
15945 return -EMSGSIZE;
15946
15947 for (i = 0; i < nd->n_matches; i++) {
15948 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15949
15950 nl_match = nla_nest_start(msg, i);
15951 if (!nl_match)
15952 break;
15953
15954 /* The SSID attribute is optional in nl80211, but for
15955 * simplicity reasons it's always present in the
15956 * cfg80211 structure. If a driver can't pass the
15957 * SSID, that needs to be changed. A zero length SSID
15958 * is still a valid SSID (wildcard), so it cannot be
15959 * used for this purpose.
15960 */
15961 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15962 match->ssid.ssid)) {
15963 nla_nest_cancel(msg, nl_match);
15964 goto out;
15965 }
15966
15967 if (match->n_channels) {
15968 nl_freqs = nla_nest_start(
15969 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15970 if (!nl_freqs) {
15971 nla_nest_cancel(msg, nl_match);
15972 goto out;
15973 }
15974
15975 for (j = 0; j < match->n_channels; j++) {
15976 if (nla_put_u32(msg, j, match->channels[j])) {
15977 nla_nest_cancel(msg, nl_freqs);
15978 nla_nest_cancel(msg, nl_match);
15979 goto out;
15980 }
15981 }
15982
15983 nla_nest_end(msg, nl_freqs);
15984 }
15985
15986 nla_nest_end(msg, nl_match);
15987 }
15988
15989 out:
15990 nla_nest_end(msg, nl_results);
15991 return 0;
15992 }
15993
15994 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15995 struct cfg80211_wowlan_wakeup *wakeup,
15996 gfp_t gfp)
15997 {
15998 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15999 struct sk_buff *msg;
16000 void *hdr;
16001 int size = 200;
16002
16003 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16004
16005 if (wakeup)
16006 size += wakeup->packet_present_len;
16007
16008 msg = nlmsg_new(size, gfp);
16009 if (!msg)
16010 return;
16011
16012 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16013 if (!hdr)
16014 goto free_msg;
16015
16016 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16017 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16018 NL80211_ATTR_PAD))
16019 goto free_msg;
16020
16021 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16022 wdev->netdev->ifindex))
16023 goto free_msg;
16024
16025 if (wakeup) {
16026 struct nlattr *reasons;
16027
16028 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
16029 if (!reasons)
16030 goto free_msg;
16031
16032 if (wakeup->disconnect &&
16033 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16034 goto free_msg;
16035 if (wakeup->magic_pkt &&
16036 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16037 goto free_msg;
16038 if (wakeup->gtk_rekey_failure &&
16039 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16040 goto free_msg;
16041 if (wakeup->eap_identity_req &&
16042 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16043 goto free_msg;
16044 if (wakeup->four_way_handshake &&
16045 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16046 goto free_msg;
16047 if (wakeup->rfkill_release &&
16048 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16049 goto free_msg;
16050
16051 if (wakeup->pattern_idx >= 0 &&
16052 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16053 wakeup->pattern_idx))
16054 goto free_msg;
16055
16056 if (wakeup->tcp_match &&
16057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16058 goto free_msg;
16059
16060 if (wakeup->tcp_connlost &&
16061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16062 goto free_msg;
16063
16064 if (wakeup->tcp_nomoretokens &&
16065 nla_put_flag(msg,
16066 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16067 goto free_msg;
16068
16069 if (wakeup->packet) {
16070 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16071 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16072
16073 if (!wakeup->packet_80211) {
16074 pkt_attr =
16075 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16076 len_attr =
16077 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16078 }
16079
16080 if (wakeup->packet_len &&
16081 nla_put_u32(msg, len_attr, wakeup->packet_len))
16082 goto free_msg;
16083
16084 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16085 wakeup->packet))
16086 goto free_msg;
16087 }
16088
16089 if (wakeup->net_detect &&
16090 cfg80211_net_detect_results(msg, wakeup))
16091 goto free_msg;
16092
16093 nla_nest_end(msg, reasons);
16094 }
16095
16096 genlmsg_end(msg, hdr);
16097
16098 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16099 NL80211_MCGRP_MLME, gfp);
16100 return;
16101
16102 free_msg:
16103 nlmsg_free(msg);
16104 }
16105 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16106 #endif
16107
16108 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16109 enum nl80211_tdls_operation oper,
16110 u16 reason_code, gfp_t gfp)
16111 {
16112 struct wireless_dev *wdev = dev->ieee80211_ptr;
16113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16114 struct sk_buff *msg;
16115 void *hdr;
16116
16117 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16118 reason_code);
16119
16120 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16121 if (!msg)
16122 return;
16123
16124 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16125 if (!hdr) {
16126 nlmsg_free(msg);
16127 return;
16128 }
16129
16130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16131 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16132 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16133 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16134 (reason_code > 0 &&
16135 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16136 goto nla_put_failure;
16137
16138 genlmsg_end(msg, hdr);
16139
16140 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16141 NL80211_MCGRP_MLME, gfp);
16142 return;
16143
16144 nla_put_failure:
16145 nlmsg_free(msg);
16146 }
16147 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16148
16149 static int nl80211_netlink_notify(struct notifier_block * nb,
16150 unsigned long state,
16151 void *_notify)
16152 {
16153 struct netlink_notify *notify = _notify;
16154 struct cfg80211_registered_device *rdev;
16155 struct wireless_dev *wdev;
16156 struct cfg80211_beacon_registration *reg, *tmp;
16157
16158 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16159 return NOTIFY_DONE;
16160
16161 rcu_read_lock();
16162
16163 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16164 struct cfg80211_sched_scan_request *sched_scan_req;
16165
16166 list_for_each_entry_rcu(sched_scan_req,
16167 &rdev->sched_scan_req_list,
16168 list) {
16169 if (sched_scan_req->owner_nlportid == notify->portid) {
16170 sched_scan_req->nl_owner_dead = true;
16171 schedule_work(&rdev->sched_scan_stop_wk);
16172 }
16173 }
16174
16175 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16176 cfg80211_mlme_unregister_socket(wdev, notify->portid);
16177
16178 if (wdev->owner_nlportid == notify->portid) {
16179 wdev->nl_owner_dead = true;
16180 schedule_work(&rdev->destroy_work);
16181 } else if (wdev->conn_owner_nlportid == notify->portid) {
16182 schedule_work(&wdev->disconnect_wk);
16183 }
16184
16185 cfg80211_release_pmsr(wdev, notify->portid);
16186 }
16187
16188 spin_lock_bh(&rdev->beacon_registrations_lock);
16189 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16190 list) {
16191 if (reg->nlportid == notify->portid) {
16192 list_del(&reg->list);
16193 kfree(reg);
16194 break;
16195 }
16196 }
16197 spin_unlock_bh(&rdev->beacon_registrations_lock);
16198 }
16199
16200 rcu_read_unlock();
16201
16202 /*
16203 * It is possible that the user space process that is controlling the
16204 * indoor setting disappeared, so notify the regulatory core.
16205 */
16206 regulatory_netlink_notify(notify->portid);
16207 return NOTIFY_OK;
16208 }
16209
16210 static struct notifier_block nl80211_netlink_notifier = {
16211 .notifier_call = nl80211_netlink_notify,
16212 };
16213
16214 void cfg80211_ft_event(struct net_device *netdev,
16215 struct cfg80211_ft_event_params *ft_event)
16216 {
16217 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16218 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16219 struct sk_buff *msg;
16220 void *hdr;
16221
16222 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16223
16224 if (!ft_event->target_ap)
16225 return;
16226
16227 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16228 GFP_KERNEL);
16229 if (!msg)
16230 return;
16231
16232 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16233 if (!hdr)
16234 goto out;
16235
16236 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16237 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16238 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16239 goto out;
16240
16241 if (ft_event->ies &&
16242 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16243 goto out;
16244 if (ft_event->ric_ies &&
16245 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16246 ft_event->ric_ies))
16247 goto out;
16248
16249 genlmsg_end(msg, hdr);
16250
16251 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16252 NL80211_MCGRP_MLME, GFP_KERNEL);
16253 return;
16254 out:
16255 nlmsg_free(msg);
16256 }
16257 EXPORT_SYMBOL(cfg80211_ft_event);
16258
16259 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16260 {
16261 struct cfg80211_registered_device *rdev;
16262 struct sk_buff *msg;
16263 void *hdr;
16264 u32 nlportid;
16265
16266 rdev = wiphy_to_rdev(wdev->wiphy);
16267 if (!rdev->crit_proto_nlportid)
16268 return;
16269
16270 nlportid = rdev->crit_proto_nlportid;
16271 rdev->crit_proto_nlportid = 0;
16272
16273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16274 if (!msg)
16275 return;
16276
16277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16278 if (!hdr)
16279 goto nla_put_failure;
16280
16281 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16282 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16283 NL80211_ATTR_PAD))
16284 goto nla_put_failure;
16285
16286 genlmsg_end(msg, hdr);
16287
16288 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16289 return;
16290
16291 nla_put_failure:
16292 nlmsg_free(msg);
16293 }
16294 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16295
16296 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16297 {
16298 struct wiphy *wiphy = wdev->wiphy;
16299 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16300 struct sk_buff *msg;
16301 void *hdr;
16302
16303 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16304 if (!msg)
16305 return;
16306
16307 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16308 if (!hdr)
16309 goto out;
16310
16311 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16312 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16313 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16314 NL80211_ATTR_PAD))
16315 goto out;
16316
16317 genlmsg_end(msg, hdr);
16318
16319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16320 NL80211_MCGRP_MLME, GFP_KERNEL);
16321 return;
16322 out:
16323 nlmsg_free(msg);
16324 }
16325
16326 int cfg80211_external_auth_request(struct net_device *dev,
16327 struct cfg80211_external_auth_params *params,
16328 gfp_t gfp)
16329 {
16330 struct wireless_dev *wdev = dev->ieee80211_ptr;
16331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16332 struct sk_buff *msg;
16333 void *hdr;
16334
16335 if (!wdev->conn_owner_nlportid)
16336 return -EINVAL;
16337
16338 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16339 if (!msg)
16340 return -ENOMEM;
16341
16342 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16343 if (!hdr)
16344 goto nla_put_failure;
16345
16346 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16347 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16348 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16349 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16350 params->action) ||
16351 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16352 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16353 params->ssid.ssid))
16354 goto nla_put_failure;
16355
16356 genlmsg_end(msg, hdr);
16357 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16358 wdev->conn_owner_nlportid);
16359 return 0;
16360
16361 nla_put_failure:
16362 nlmsg_free(msg);
16363 return -ENOBUFS;
16364 }
16365 EXPORT_SYMBOL(cfg80211_external_auth_request);
16366
16367 /* initialisation/exit functions */
16368
16369 int __init nl80211_init(void)
16370 {
16371 int err;
16372
16373 err = genl_register_family(&nl80211_fam);
16374 if (err)
16375 return err;
16376
16377 err = netlink_register_notifier(&nl80211_netlink_notifier);
16378 if (err)
16379 goto err_out;
16380
16381 return 0;
16382 err_out:
16383 genl_unregister_family(&nl80211_fam);
16384 return err;
16385 }
16386
16387 void nl80211_exit(void)
16388 {
16389 netlink_unregister_notifier(&nl80211_netlink_notifier);
16390 genl_unregister_family(&nl80211_fam);
16391 }
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