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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / net / wireless / nl80211.c
blob5fa402144cda460cf4ec8dee94d22cc4059f068e
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This is the new netlink-based wireless configuration interface.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2020 Intel Corporation
9 */
10
11 #include <linux/if.h>
12 #include <linux/module.h>
13 #include <linux/err.h>
14 #include <linux/slab.h>
15 #include <linux/list.h>
16 #include <linux/if_ether.h>
17 #include <linux/ieee80211.h>
18 #include <linux/nl80211.h>
19 #include <linux/rtnetlink.h>
20 #include <linux/netlink.h>
21 #include <linux/nospec.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <net/net_namespace.h>
25 #include <net/genetlink.h>
26 #include <net/cfg80211.h>
27 #include <net/sock.h>
28 #include <net/inet_connection_sock.h>
29 #include "core.h"
30 #include "nl80211.h"
31 #include "reg.h"
32 #include "rdev-ops.h"
33
34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
35 struct genl_info *info,
36 struct cfg80211_crypto_settings *settings,
37 int cipher_limit);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam;
41
42 /* multicast groups */
43 enum nl80211_multicast_groups {
44 NL80211_MCGRP_CONFIG,
45 NL80211_MCGRP_SCAN,
46 NL80211_MCGRP_REGULATORY,
47 NL80211_MCGRP_MLME,
48 NL80211_MCGRP_VENDOR,
49 NL80211_MCGRP_NAN,
50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
51 };
52
53 static const struct genl_multicast_group nl80211_mcgrps[] = {
54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
60 #ifdef CONFIG_NL80211_TESTMODE
61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
62 #endif
63 };
64
65 /* returns ERR_PTR values */
66 static struct wireless_dev *
67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
68 {
69 struct cfg80211_registered_device *rdev;
70 struct wireless_dev *result = NULL;
71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
73 u64 wdev_id;
74 int wiphy_idx = -1;
75 int ifidx = -1;
76
77 ASSERT_RTNL();
78
79 if (!have_ifidx && !have_wdev_id)
80 return ERR_PTR(-EINVAL);
81
82 if (have_ifidx)
83 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
84 if (have_wdev_id) {
85 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
86 wiphy_idx = wdev_id >> 32;
87 }
88
89 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
90 struct wireless_dev *wdev;
91
92 if (wiphy_net(&rdev->wiphy) != netns)
93 continue;
94
95 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
96 continue;
97
98 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
99 if (have_ifidx && wdev->netdev &&
100 wdev->netdev->ifindex == ifidx) {
101 result = wdev;
102 break;
103 }
104 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
105 result = wdev;
106 break;
107 }
108 }
109
110 if (result)
111 break;
112 }
113
114 if (result)
115 return result;
116 return ERR_PTR(-ENODEV);
117 }
118
119 static struct cfg80211_registered_device *
120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
121 {
122 struct cfg80211_registered_device *rdev = NULL, *tmp;
123 struct net_device *netdev;
124
125 ASSERT_RTNL();
126
127 if (!attrs[NL80211_ATTR_WIPHY] &&
128 !attrs[NL80211_ATTR_IFINDEX] &&
129 !attrs[NL80211_ATTR_WDEV])
130 return ERR_PTR(-EINVAL);
131
132 if (attrs[NL80211_ATTR_WIPHY])
133 rdev = cfg80211_rdev_by_wiphy_idx(
134 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
135
136 if (attrs[NL80211_ATTR_WDEV]) {
137 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
138 struct wireless_dev *wdev;
139 bool found = false;
140
141 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
142 if (tmp) {
143 /* make sure wdev exists */
144 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
145 if (wdev->identifier != (u32)wdev_id)
146 continue;
147 found = true;
148 break;
149 }
150
151 if (!found)
152 tmp = NULL;
153
154 if (rdev && tmp != rdev)
155 return ERR_PTR(-EINVAL);
156 rdev = tmp;
157 }
158 }
159
160 if (attrs[NL80211_ATTR_IFINDEX]) {
161 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
162
163 netdev = __dev_get_by_index(netns, ifindex);
164 if (netdev) {
165 if (netdev->ieee80211_ptr)
166 tmp = wiphy_to_rdev(
167 netdev->ieee80211_ptr->wiphy);
168 else
169 tmp = NULL;
170
171 /* not wireless device -- return error */
172 if (!tmp)
173 return ERR_PTR(-EINVAL);
174
175 /* mismatch -- return error */
176 if (rdev && tmp != rdev)
177 return ERR_PTR(-EINVAL);
178
179 rdev = tmp;
180 }
181 }
182
183 if (!rdev)
184 return ERR_PTR(-ENODEV);
185
186 if (netns != wiphy_net(&rdev->wiphy))
187 return ERR_PTR(-ENODEV);
188
189 return rdev;
190 }
191
192 /*
193 * This function returns a pointer to the driver
194 * that the genl_info item that is passed refers to.
195 *
196 * The result of this can be a PTR_ERR and hence must
197 * be checked with IS_ERR() for errors.
198 */
199 static struct cfg80211_registered_device *
200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
201 {
202 return __cfg80211_rdev_from_attrs(netns, info->attrs);
203 }
204
205 static int validate_beacon_head(const struct nlattr *attr,
206 struct netlink_ext_ack *extack)
207 {
208 const u8 *data = nla_data(attr);
209 unsigned int len = nla_len(attr);
210 const struct element *elem;
211 const struct ieee80211_mgmt *mgmt = (void *)data;
212 unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
213 u.beacon.variable);
214
215 if (len < fixedlen)
216 goto err;
217
218 if (ieee80211_hdrlen(mgmt->frame_control) !=
219 offsetof(struct ieee80211_mgmt, u.beacon))
220 goto err;
221
222 data += fixedlen;
223 len -= fixedlen;
224
225 for_each_element(elem, data, len) {
226 /* nothing */
227 }
228
229 if (for_each_element_completed(elem, data, len))
230 return 0;
231
232 err:
233 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
234 return -EINVAL;
235 }
236
237 static int validate_ie_attr(const struct nlattr *attr,
238 struct netlink_ext_ack *extack)
239 {
240 const u8 *data = nla_data(attr);
241 unsigned int len = nla_len(attr);
242 const struct element *elem;
243
244 for_each_element(elem, data, len) {
245 /* nothing */
246 }
247
248 if (for_each_element_completed(elem, data, len))
249 return 0;
250
251 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
252 return -EINVAL;
253 }
254
255 /* policy for the attributes */
256 static const struct nla_policy
257 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
258 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
259 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
260 .len = U8_MAX },
261 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
262 .len = U8_MAX },
263 };
264
265 static const struct nla_policy
266 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
267 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
268 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
269 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
270 NLA_POLICY_MAX(NLA_U8, 15),
271 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
272 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
273 NLA_POLICY_MAX(NLA_U8, 15),
274 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
275 NLA_POLICY_MAX(NLA_U8, 31),
276 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
277 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
278 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
279 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
280 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
281 };
282
283 static const struct nla_policy
284 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
285 [NL80211_PMSR_TYPE_FTM] =
286 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
287 };
288
289 static const struct nla_policy
290 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
291 [NL80211_PMSR_REQ_ATTR_DATA] =
292 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
293 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
294 };
295
296 static const struct nla_policy
297 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
298 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
299 /*
300 * we could specify this again to be the top-level policy,
301 * but that would open us up to recursion problems ...
302 */
303 [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
304 [NL80211_PMSR_PEER_ATTR_REQ] =
305 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
306 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
307 };
308
309 static const struct nla_policy
310 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
311 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
312 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
313 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
314 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
315 [NL80211_PMSR_ATTR_PEERS] =
316 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
317 };
318
319 static const struct nla_policy
320 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
321 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
322 NLA_POLICY_RANGE(NLA_U8, 1, 20),
323 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
324 NLA_POLICY_RANGE(NLA_U8, 1, 20),
325 };
326
327 static const struct nla_policy
328 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
329 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
330 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
331 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
332 };
333
334 static const struct nla_policy
335 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
336 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
337 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
338 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
339 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
340 [NL80211_TID_CONFIG_ATTR_NOACK] =
341 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
342 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
343 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
344 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
345 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
346 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
347 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
348 };
349
350 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
351 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
352 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
353 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
354 .len = 20-1 },
355 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
356
357 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
358 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
359 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
360 NL80211_EDMG_CHANNELS_MIN,
361 NL80211_EDMG_CHANNELS_MAX),
362 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
363 NL80211_EDMG_BW_CONFIG_MIN,
364 NL80211_EDMG_BW_CONFIG_MAX),
365
366 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
367 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
368 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
369
370 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
371 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
372 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
373 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
374 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
375 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
376
377 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
378 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
379 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
380
381 [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
382 [NL80211_ATTR_PREV_BSSID] = {
383 .type = NLA_EXACT_LEN_WARN,
384 .len = ETH_ALEN
385 },
386
387 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
388 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
389 .len = WLAN_MAX_KEY_LEN },
390 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
391 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
392 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
393 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
394 [NL80211_ATTR_KEY_TYPE] =
395 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
396
397 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
398 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
399 [NL80211_ATTR_BEACON_HEAD] =
400 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
401 IEEE80211_MAX_DATA_LEN),
402 [NL80211_ATTR_BEACON_TAIL] =
403 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
404 IEEE80211_MAX_DATA_LEN),
405 [NL80211_ATTR_STA_AID] =
406 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
407 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
408 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
409 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
410 .len = NL80211_MAX_SUPP_RATES },
411 [NL80211_ATTR_STA_PLINK_ACTION] =
412 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
413 [NL80211_ATTR_STA_TX_POWER_SETTING] =
414 NLA_POLICY_RANGE(NLA_U8,
415 NL80211_TX_POWER_AUTOMATIC,
416 NL80211_TX_POWER_FIXED),
417 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
418 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
419 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
420 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
421 .len = IEEE80211_MAX_MESH_ID_LEN },
422 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
423
424 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
425 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
426
427 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
428 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
429 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
430 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
431 .len = NL80211_MAX_SUPP_RATES },
432 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
433
434 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
435 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
436
437 [NL80211_ATTR_HT_CAPABILITY] = {
438 .type = NLA_EXACT_LEN_WARN,
439 .len = NL80211_HT_CAPABILITY_LEN
440 },
441
442 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
443 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
444 validate_ie_attr,
445 IEEE80211_MAX_DATA_LEN),
446 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
447 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
448
449 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
450 .len = IEEE80211_MAX_SSID_LEN },
451 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
452 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
453 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
454 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
455 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
456 NL80211_MFP_NO,
457 NL80211_MFP_OPTIONAL),
458 [NL80211_ATTR_STA_FLAGS2] = {
459 .len = sizeof(struct nl80211_sta_flag_update),
460 },
461 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
462 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
463 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
464 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
465 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
466 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
467 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
468 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
469 [NL80211_ATTR_PID] = { .type = NLA_U32 },
470 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
471 [NL80211_ATTR_PMKID] = {
472 .type = NLA_EXACT_LEN_WARN,
473 .len = WLAN_PMKID_LEN
474 },
475 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
476 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
477 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
478 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
479 .len = IEEE80211_MAX_DATA_LEN },
480 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
481 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
482 NL80211_PS_DISABLED,
483 NL80211_PS_ENABLED),
484 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
485 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
486 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
487 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
488 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
489 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
490 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
491 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
492 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
493 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
494 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
495 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
496 [NL80211_ATTR_STA_PLINK_STATE] =
497 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
498 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
499 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
500 [NL80211_ATTR_MESH_PEER_AID] =
501 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
502 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
503 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
504 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
505 [NL80211_ATTR_HIDDEN_SSID] =
506 NLA_POLICY_RANGE(NLA_U32,
507 NL80211_HIDDEN_SSID_NOT_IN_USE,
508 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
509 [NL80211_ATTR_IE_PROBE_RESP] =
510 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
511 IEEE80211_MAX_DATA_LEN),
512 [NL80211_ATTR_IE_ASSOC_RESP] =
513 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
514 IEEE80211_MAX_DATA_LEN),
515 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
516 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
517 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
518 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
519 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
520 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
521 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
522 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
523 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
524 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
525 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
526 .len = IEEE80211_MAX_DATA_LEN },
527 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
528 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
529 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
530 .len = NL80211_HT_CAPABILITY_LEN
531 },
532 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
533 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
534 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
535 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
536 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
537 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
538 [NL80211_ATTR_VHT_CAPABILITY] = {
539 .type = NLA_EXACT_LEN_WARN,
540 .len = NL80211_VHT_CAPABILITY_LEN
541 },
542 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
543 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
544 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
545 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
546 NLA_POLICY_RANGE(NLA_U32,
547 NL80211_MESH_POWER_UNKNOWN + 1,
548 NL80211_MESH_POWER_MAX),
549 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
550 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
551 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
552 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
553 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
554 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
555 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
556 .len = NL80211_VHT_CAPABILITY_LEN,
557 },
558 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
559 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
560 .len = IEEE80211_MAX_DATA_LEN },
561 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
562 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
563 [NL80211_ATTR_PEER_AID] =
564 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
565 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
566 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
567 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
568 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
569 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
570 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
571 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
572 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
573 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
574 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
575 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
576 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
577 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
578 .len = IEEE80211_QOS_MAP_LEN_MAX },
579 [NL80211_ATTR_MAC_HINT] = {
580 .type = NLA_EXACT_LEN_WARN,
581 .len = ETH_ALEN
582 },
583 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
584 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
585 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
586 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
587 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
588 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
589 [NL80211_ATTR_USER_PRIO] =
590 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
591 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
592 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
593 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
594 [NL80211_ATTR_MAC_MASK] = {
595 .type = NLA_EXACT_LEN_WARN,
596 .len = ETH_ALEN
597 },
598 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
599 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
600 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
601 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
602 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
603 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
604 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
605 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
606 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
607 .len = VHT_MUMIMO_GROUPS_DATA_LEN
608 },
609 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
610 .type = NLA_EXACT_LEN_WARN,
611 .len = ETH_ALEN
612 },
613 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
614 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
615 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
616 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
617 .len = FILS_MAX_KEK_LEN },
618 [NL80211_ATTR_FILS_NONCES] = {
619 .type = NLA_EXACT_LEN_WARN,
620 .len = 2 * FILS_NONCE_LEN
621 },
622 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
623 [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
624 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
625 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
626 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
627 },
628 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
629 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
630 .len = FILS_ERP_MAX_USERNAME_LEN },
631 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
632 .len = FILS_ERP_MAX_REALM_LEN },
633 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
634 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
635 .len = FILS_ERP_MAX_RRK_LEN },
636 [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
637 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
638 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
639 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
640
641 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
642 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
643 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
644 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
645 .len = NL80211_HE_MAX_CAPABILITY_LEN },
646
647 [NL80211_ATTR_FTM_RESPONDER] = {
648 .type = NLA_NESTED,
649 .validation_data = nl80211_ftm_responder_policy,
650 },
651 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
652 [NL80211_ATTR_PEER_MEASUREMENTS] =
653 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
654 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
655 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
656 .len = SAE_PASSWORD_MAX_LEN },
657 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
658 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
659 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
660 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
661 [NL80211_ATTR_TID_CONFIG] =
662 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
663 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
664 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
665 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
666 };
667
668 /* policy for the key attributes */
669 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
670 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
671 [NL80211_KEY_IDX] = { .type = NLA_U8 },
672 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
673 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
674 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
675 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
676 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
677 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
678 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
679 };
680
681 /* policy for the key default flags */
682 static const struct nla_policy
683 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
684 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
685 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
686 };
687
688 #ifdef CONFIG_PM
689 /* policy for WoWLAN attributes */
690 static const struct nla_policy
691 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
692 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
693 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
694 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
695 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
696 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
697 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
698 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
699 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
700 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
701 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
702 };
703
704 static const struct nla_policy
705 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
706 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
707 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
708 [NL80211_WOWLAN_TCP_DST_MAC] = {
709 .type = NLA_EXACT_LEN_WARN,
710 .len = ETH_ALEN
711 },
712 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
713 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
714 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
715 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
716 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
717 },
718 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
719 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
720 },
721 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
722 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
723 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
724 };
725 #endif /* CONFIG_PM */
726
727 /* policy for coalesce rule attributes */
728 static const struct nla_policy
729 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
730 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
731 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
732 NLA_POLICY_RANGE(NLA_U32,
733 NL80211_COALESCE_CONDITION_MATCH,
734 NL80211_COALESCE_CONDITION_NO_MATCH),
735 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
736 };
737
738 /* policy for GTK rekey offload attributes */
739 static const struct nla_policy
740 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
741 [NL80211_REKEY_DATA_KEK] = {
742 .type = NLA_EXACT_LEN_WARN,
743 .len = NL80211_KEK_LEN,
744 },
745 [NL80211_REKEY_DATA_KCK] = {
746 .type = NLA_EXACT_LEN_WARN,
747 .len = NL80211_KCK_LEN,
748 },
749 [NL80211_REKEY_DATA_REPLAY_CTR] = {
750 .type = NLA_EXACT_LEN_WARN,
751 .len = NL80211_REPLAY_CTR_LEN
752 },
753 };
754
755 static const struct nla_policy
756 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
757 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
758 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
759 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
760 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
761 };
762
763 static const struct nla_policy
764 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
765 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
766 .len = IEEE80211_MAX_SSID_LEN },
767 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
768 .type = NLA_EXACT_LEN_WARN,
769 .len = ETH_ALEN
770 },
771 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
772 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
773 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
774 };
775
776 static const struct nla_policy
777 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
778 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
779 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
780 };
781
782 static const struct nla_policy
783 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
784 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
785 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
786 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
787 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
788 },
789 };
790
791 /* policy for NAN function attributes */
792 static const struct nla_policy
793 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
794 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
795 [NL80211_NAN_FUNC_SERVICE_ID] = {
796 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
797 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
798 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
799 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
800 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
801 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
802 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
803 .type = NLA_EXACT_LEN_WARN,
804 .len = ETH_ALEN
805 },
806 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
807 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
808 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
809 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
810 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
811 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
812 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
813 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
814 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
815 };
816
817 /* policy for Service Response Filter attributes */
818 static const struct nla_policy
819 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
820 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
821 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
822 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
823 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
824 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
825 };
826
827 /* policy for packet pattern attributes */
828 static const struct nla_policy
829 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
830 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
831 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
832 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
833 };
834
835 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
836 struct cfg80211_registered_device **rdev,
837 struct wireless_dev **wdev)
838 {
839 int err;
840
841 if (!cb->args[0]) {
842 struct nlattr **attrbuf;
843
844 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
845 GFP_KERNEL);
846 if (!attrbuf)
847 return -ENOMEM;
848
849 err = nlmsg_parse_deprecated(cb->nlh,
850 GENL_HDRLEN + nl80211_fam.hdrsize,
851 attrbuf, nl80211_fam.maxattr,
852 nl80211_policy, NULL);
853 if (err) {
854 kfree(attrbuf);
855 return err;
856 }
857
858 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
859 attrbuf);
860 kfree(attrbuf);
861 if (IS_ERR(*wdev))
862 return PTR_ERR(*wdev);
863 *rdev = wiphy_to_rdev((*wdev)->wiphy);
864 /* 0 is the first index - add 1 to parse only once */
865 cb->args[0] = (*rdev)->wiphy_idx + 1;
866 cb->args[1] = (*wdev)->identifier;
867 } else {
868 /* subtract the 1 again here */
869 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
870 struct wireless_dev *tmp;
871
872 if (!wiphy)
873 return -ENODEV;
874 *rdev = wiphy_to_rdev(wiphy);
875 *wdev = NULL;
876
877 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
878 if (tmp->identifier == cb->args[1]) {
879 *wdev = tmp;
880 break;
881 }
882 }
883
884 if (!*wdev)
885 return -ENODEV;
886 }
887
888 return 0;
889 }
890
891 /* message building helper */
892 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
893 int flags, u8 cmd)
894 {
895 /* since there is no private header just add the generic one */
896 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
897 }
898
899 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
900 const struct ieee80211_reg_rule *rule)
901 {
902 int j;
903 struct nlattr *nl_wmm_rules =
904 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
905
906 if (!nl_wmm_rules)
907 goto nla_put_failure;
908
909 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
910 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
911
912 if (!nl_wmm_rule)
913 goto nla_put_failure;
914
915 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
916 rule->wmm_rule.client[j].cw_min) ||
917 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
918 rule->wmm_rule.client[j].cw_max) ||
919 nla_put_u8(msg, NL80211_WMMR_AIFSN,
920 rule->wmm_rule.client[j].aifsn) ||
921 nla_put_u16(msg, NL80211_WMMR_TXOP,
922 rule->wmm_rule.client[j].cot))
923 goto nla_put_failure;
924
925 nla_nest_end(msg, nl_wmm_rule);
926 }
927 nla_nest_end(msg, nl_wmm_rules);
928
929 return 0;
930
931 nla_put_failure:
932 return -ENOBUFS;
933 }
934
935 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
936 struct ieee80211_channel *chan,
937 bool large)
938 {
939 /* Some channels must be completely excluded from the
940 * list to protect old user-space tools from breaking
941 */
942 if (!large && chan->flags &
943 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
944 return 0;
945
946 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
947 chan->center_freq))
948 goto nla_put_failure;
949
950 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
951 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
952 goto nla_put_failure;
953 if (chan->flags & IEEE80211_CHAN_NO_IR) {
954 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
955 goto nla_put_failure;
956 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
957 goto nla_put_failure;
958 }
959 if (chan->flags & IEEE80211_CHAN_RADAR) {
960 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
961 goto nla_put_failure;
962 if (large) {
963 u32 time;
964
965 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
966
967 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
968 chan->dfs_state))
969 goto nla_put_failure;
970 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
971 time))
972 goto nla_put_failure;
973 if (nla_put_u32(msg,
974 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
975 chan->dfs_cac_ms))
976 goto nla_put_failure;
977 }
978 }
979
980 if (large) {
981 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
982 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
983 goto nla_put_failure;
984 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
985 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
986 goto nla_put_failure;
987 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
988 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
989 goto nla_put_failure;
990 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
991 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
992 goto nla_put_failure;
993 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
994 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
995 goto nla_put_failure;
996 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
997 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
998 goto nla_put_failure;
999 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1000 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1001 goto nla_put_failure;
1002 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1003 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1004 goto nla_put_failure;
1005 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1006 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1007 goto nla_put_failure;
1008 }
1009
1010 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1011 DBM_TO_MBM(chan->max_power)))
1012 goto nla_put_failure;
1013
1014 if (large) {
1015 const struct ieee80211_reg_rule *rule =
1016 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1017
1018 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1019 if (nl80211_msg_put_wmm_rules(msg, rule))
1020 goto nla_put_failure;
1021 }
1022 }
1023
1024 return 0;
1025
1026 nla_put_failure:
1027 return -ENOBUFS;
1028 }
1029
1030 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1031 struct cfg80211_txq_stats *txqstats,
1032 int attrtype)
1033 {
1034 struct nlattr *txqattr;
1035
1036 #define PUT_TXQVAL_U32(attr, memb) do { \
1037 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1038 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1039 return false; \
1040 } while (0)
1041
1042 txqattr = nla_nest_start_noflag(msg, attrtype);
1043 if (!txqattr)
1044 return false;
1045
1046 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1047 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1048 PUT_TXQVAL_U32(FLOWS, flows);
1049 PUT_TXQVAL_U32(DROPS, drops);
1050 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1051 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1052 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1053 PUT_TXQVAL_U32(COLLISIONS, collisions);
1054 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1055 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1056 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1057 nla_nest_end(msg, txqattr);
1058
1059 #undef PUT_TXQVAL_U32
1060 return true;
1061 }
1062
1063 /* netlink command implementations */
1064
1065 struct key_parse {
1066 struct key_params p;
1067 int idx;
1068 int type;
1069 bool def, defmgmt, defbeacon;
1070 bool def_uni, def_multi;
1071 };
1072
1073 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1074 struct key_parse *k)
1075 {
1076 struct nlattr *tb[NL80211_KEY_MAX + 1];
1077 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1078 nl80211_key_policy,
1079 info->extack);
1080 if (err)
1081 return err;
1082
1083 k->def = !!tb[NL80211_KEY_DEFAULT];
1084 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1085 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1086
1087 if (k->def) {
1088 k->def_uni = true;
1089 k->def_multi = true;
1090 }
1091 if (k->defmgmt || k->defbeacon)
1092 k->def_multi = true;
1093
1094 if (tb[NL80211_KEY_IDX])
1095 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1096
1097 if (tb[NL80211_KEY_DATA]) {
1098 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1099 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1100 }
1101
1102 if (tb[NL80211_KEY_SEQ]) {
1103 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1104 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1105 }
1106
1107 if (tb[NL80211_KEY_CIPHER])
1108 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1109
1110 if (tb[NL80211_KEY_TYPE])
1111 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1112
1113 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1114 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1115
1116 err = nla_parse_nested_deprecated(kdt,
1117 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1118 tb[NL80211_KEY_DEFAULT_TYPES],
1119 nl80211_key_default_policy,
1120 info->extack);
1121 if (err)
1122 return err;
1123
1124 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1125 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1126 }
1127
1128 if (tb[NL80211_KEY_MODE])
1129 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1130
1131 return 0;
1132 }
1133
1134 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1135 {
1136 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1137 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1138 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1139 }
1140
1141 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1142 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1143 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1144 }
1145
1146 if (info->attrs[NL80211_ATTR_KEY_IDX])
1147 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1148
1149 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1150 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1151
1152 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1153 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1154
1155 if (k->def) {
1156 k->def_uni = true;
1157 k->def_multi = true;
1158 }
1159 if (k->defmgmt)
1160 k->def_multi = true;
1161
1162 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1163 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1164
1165 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1166 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1167 int err = nla_parse_nested_deprecated(kdt,
1168 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1169 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1170 nl80211_key_default_policy,
1171 info->extack);
1172 if (err)
1173 return err;
1174
1175 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1176 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1177 }
1178
1179 return 0;
1180 }
1181
1182 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1183 {
1184 int err;
1185
1186 memset(k, 0, sizeof(*k));
1187 k->idx = -1;
1188 k->type = -1;
1189
1190 if (info->attrs[NL80211_ATTR_KEY])
1191 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1192 else
1193 err = nl80211_parse_key_old(info, k);
1194
1195 if (err)
1196 return err;
1197
1198 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1199 (k->defbeacon ? 1 : 0) > 1) {
1200 GENL_SET_ERR_MSG(info,
1201 "key with multiple default flags is invalid");
1202 return -EINVAL;
1203 }
1204
1205 if (k->defmgmt || k->defbeacon) {
1206 if (k->def_uni || !k->def_multi) {
1207 GENL_SET_ERR_MSG(info,
1208 "defmgmt/defbeacon key must be mcast");
1209 return -EINVAL;
1210 }
1211 }
1212
1213 if (k->idx != -1) {
1214 if (k->defmgmt) {
1215 if (k->idx < 4 || k->idx > 5) {
1216 GENL_SET_ERR_MSG(info,
1217 "defmgmt key idx not 4 or 5");
1218 return -EINVAL;
1219 }
1220 } else if (k->defbeacon) {
1221 if (k->idx < 6 || k->idx > 7) {
1222 GENL_SET_ERR_MSG(info,
1223 "defbeacon key idx not 6 or 7");
1224 return -EINVAL;
1225 }
1226 } else if (k->def) {
1227 if (k->idx < 0 || k->idx > 3) {
1228 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1229 return -EINVAL;
1230 }
1231 } else {
1232 if (k->idx < 0 || k->idx > 7) {
1233 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1234 return -EINVAL;
1235 }
1236 }
1237 }
1238
1239 return 0;
1240 }
1241
1242 static struct cfg80211_cached_keys *
1243 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1244 struct genl_info *info, bool *no_ht)
1245 {
1246 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1247 struct key_parse parse;
1248 struct nlattr *key;
1249 struct cfg80211_cached_keys *result;
1250 int rem, err, def = 0;
1251 bool have_key = false;
1252
1253 nla_for_each_nested(key, keys, rem) {
1254 have_key = true;
1255 break;
1256 }
1257
1258 if (!have_key)
1259 return NULL;
1260
1261 result = kzalloc(sizeof(*result), GFP_KERNEL);
1262 if (!result)
1263 return ERR_PTR(-ENOMEM);
1264
1265 result->def = -1;
1266
1267 nla_for_each_nested(key, keys, rem) {
1268 memset(&parse, 0, sizeof(parse));
1269 parse.idx = -1;
1270
1271 err = nl80211_parse_key_new(info, key, &parse);
1272 if (err)
1273 goto error;
1274 err = -EINVAL;
1275 if (!parse.p.key)
1276 goto error;
1277 if (parse.idx < 0 || parse.idx > 3) {
1278 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1279 goto error;
1280 }
1281 if (parse.def) {
1282 if (def) {
1283 GENL_SET_ERR_MSG(info,
1284 "only one key can be default");
1285 goto error;
1286 }
1287 def = 1;
1288 result->def = parse.idx;
1289 if (!parse.def_uni || !parse.def_multi)
1290 goto error;
1291 } else if (parse.defmgmt)
1292 goto error;
1293 err = cfg80211_validate_key_settings(rdev, &parse.p,
1294 parse.idx, false, NULL);
1295 if (err)
1296 goto error;
1297 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1298 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1299 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1300 err = -EINVAL;
1301 goto error;
1302 }
1303 result->params[parse.idx].cipher = parse.p.cipher;
1304 result->params[parse.idx].key_len = parse.p.key_len;
1305 result->params[parse.idx].key = result->data[parse.idx];
1306 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1307
1308 /* must be WEP key if we got here */
1309 if (no_ht)
1310 *no_ht = true;
1311 }
1312
1313 if (result->def < 0) {
1314 err = -EINVAL;
1315 GENL_SET_ERR_MSG(info, "need a default/TX key");
1316 goto error;
1317 }
1318
1319 return result;
1320 error:
1321 kfree(result);
1322 return ERR_PTR(err);
1323 }
1324
1325 static int nl80211_key_allowed(struct wireless_dev *wdev)
1326 {
1327 ASSERT_WDEV_LOCK(wdev);
1328
1329 switch (wdev->iftype) {
1330 case NL80211_IFTYPE_AP:
1331 case NL80211_IFTYPE_AP_VLAN:
1332 case NL80211_IFTYPE_P2P_GO:
1333 case NL80211_IFTYPE_MESH_POINT:
1334 break;
1335 case NL80211_IFTYPE_ADHOC:
1336 case NL80211_IFTYPE_STATION:
1337 case NL80211_IFTYPE_P2P_CLIENT:
1338 if (!wdev->current_bss)
1339 return -ENOLINK;
1340 break;
1341 case NL80211_IFTYPE_UNSPECIFIED:
1342 case NL80211_IFTYPE_OCB:
1343 case NL80211_IFTYPE_MONITOR:
1344 case NL80211_IFTYPE_NAN:
1345 case NL80211_IFTYPE_P2P_DEVICE:
1346 case NL80211_IFTYPE_WDS:
1347 case NUM_NL80211_IFTYPES:
1348 return -EINVAL;
1349 }
1350
1351 return 0;
1352 }
1353
1354 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1355 struct nlattr *tb)
1356 {
1357 struct ieee80211_channel *chan;
1358
1359 if (tb == NULL)
1360 return NULL;
1361 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1362 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1363 return NULL;
1364 return chan;
1365 }
1366
1367 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1368 {
1369 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1370 int i;
1371
1372 if (!nl_modes)
1373 goto nla_put_failure;
1374
1375 i = 0;
1376 while (ifmodes) {
1377 if ((ifmodes & 1) && nla_put_flag(msg, i))
1378 goto nla_put_failure;
1379 ifmodes >>= 1;
1380 i++;
1381 }
1382
1383 nla_nest_end(msg, nl_modes);
1384 return 0;
1385
1386 nla_put_failure:
1387 return -ENOBUFS;
1388 }
1389
1390 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1391 struct sk_buff *msg,
1392 bool large)
1393 {
1394 struct nlattr *nl_combis;
1395 int i, j;
1396
1397 nl_combis = nla_nest_start_noflag(msg,
1398 NL80211_ATTR_INTERFACE_COMBINATIONS);
1399 if (!nl_combis)
1400 goto nla_put_failure;
1401
1402 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1403 const struct ieee80211_iface_combination *c;
1404 struct nlattr *nl_combi, *nl_limits;
1405
1406 c = &wiphy->iface_combinations[i];
1407
1408 nl_combi = nla_nest_start_noflag(msg, i + 1);
1409 if (!nl_combi)
1410 goto nla_put_failure;
1411
1412 nl_limits = nla_nest_start_noflag(msg,
1413 NL80211_IFACE_COMB_LIMITS);
1414 if (!nl_limits)
1415 goto nla_put_failure;
1416
1417 for (j = 0; j < c->n_limits; j++) {
1418 struct nlattr *nl_limit;
1419
1420 nl_limit = nla_nest_start_noflag(msg, j + 1);
1421 if (!nl_limit)
1422 goto nla_put_failure;
1423 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1424 c->limits[j].max))
1425 goto nla_put_failure;
1426 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1427 c->limits[j].types))
1428 goto nla_put_failure;
1429 nla_nest_end(msg, nl_limit);
1430 }
1431
1432 nla_nest_end(msg, nl_limits);
1433
1434 if (c->beacon_int_infra_match &&
1435 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1436 goto nla_put_failure;
1437 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1438 c->num_different_channels) ||
1439 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1440 c->max_interfaces))
1441 goto nla_put_failure;
1442 if (large &&
1443 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1444 c->radar_detect_widths) ||
1445 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1446 c->radar_detect_regions)))
1447 goto nla_put_failure;
1448 if (c->beacon_int_min_gcd &&
1449 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1450 c->beacon_int_min_gcd))
1451 goto nla_put_failure;
1452
1453 nla_nest_end(msg, nl_combi);
1454 }
1455
1456 nla_nest_end(msg, nl_combis);
1457
1458 return 0;
1459 nla_put_failure:
1460 return -ENOBUFS;
1461 }
1462
1463 #ifdef CONFIG_PM
1464 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1465 struct sk_buff *msg)
1466 {
1467 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1468 struct nlattr *nl_tcp;
1469
1470 if (!tcp)
1471 return 0;
1472
1473 nl_tcp = nla_nest_start_noflag(msg,
1474 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1475 if (!nl_tcp)
1476 return -ENOBUFS;
1477
1478 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1479 tcp->data_payload_max))
1480 return -ENOBUFS;
1481
1482 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1483 tcp->data_payload_max))
1484 return -ENOBUFS;
1485
1486 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1487 return -ENOBUFS;
1488
1489 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1490 sizeof(*tcp->tok), tcp->tok))
1491 return -ENOBUFS;
1492
1493 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1494 tcp->data_interval_max))
1495 return -ENOBUFS;
1496
1497 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1498 tcp->wake_payload_max))
1499 return -ENOBUFS;
1500
1501 nla_nest_end(msg, nl_tcp);
1502 return 0;
1503 }
1504
1505 static int nl80211_send_wowlan(struct sk_buff *msg,
1506 struct cfg80211_registered_device *rdev,
1507 bool large)
1508 {
1509 struct nlattr *nl_wowlan;
1510
1511 if (!rdev->wiphy.wowlan)
1512 return 0;
1513
1514 nl_wowlan = nla_nest_start_noflag(msg,
1515 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1516 if (!nl_wowlan)
1517 return -ENOBUFS;
1518
1519 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1520 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1521 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1522 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1523 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1524 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1525 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1526 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1527 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1528 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1529 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1530 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1531 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1532 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1533 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1534 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1535 return -ENOBUFS;
1536
1537 if (rdev->wiphy.wowlan->n_patterns) {
1538 struct nl80211_pattern_support pat = {
1539 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1540 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1541 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1542 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1543 };
1544
1545 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1546 sizeof(pat), &pat))
1547 return -ENOBUFS;
1548 }
1549
1550 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1551 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1552 rdev->wiphy.wowlan->max_nd_match_sets))
1553 return -ENOBUFS;
1554
1555 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1556 return -ENOBUFS;
1557
1558 nla_nest_end(msg, nl_wowlan);
1559
1560 return 0;
1561 }
1562 #endif
1563
1564 static int nl80211_send_coalesce(struct sk_buff *msg,
1565 struct cfg80211_registered_device *rdev)
1566 {
1567 struct nl80211_coalesce_rule_support rule;
1568
1569 if (!rdev->wiphy.coalesce)
1570 return 0;
1571
1572 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1573 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1574 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1575 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1576 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1577 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1578
1579 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1580 return -ENOBUFS;
1581
1582 return 0;
1583 }
1584
1585 static int
1586 nl80211_send_iftype_data(struct sk_buff *msg,
1587 const struct ieee80211_sband_iftype_data *iftdata)
1588 {
1589 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1590
1591 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1592 iftdata->types_mask))
1593 return -ENOBUFS;
1594
1595 if (he_cap->has_he) {
1596 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1597 sizeof(he_cap->he_cap_elem.mac_cap_info),
1598 he_cap->he_cap_elem.mac_cap_info) ||
1599 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1600 sizeof(he_cap->he_cap_elem.phy_cap_info),
1601 he_cap->he_cap_elem.phy_cap_info) ||
1602 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1603 sizeof(he_cap->he_mcs_nss_supp),
1604 &he_cap->he_mcs_nss_supp) ||
1605 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1606 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1607 return -ENOBUFS;
1608 }
1609
1610 return 0;
1611 }
1612
1613 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1614 struct ieee80211_supported_band *sband)
1615 {
1616 struct nlattr *nl_rates, *nl_rate;
1617 struct ieee80211_rate *rate;
1618 int i;
1619
1620 /* add HT info */
1621 if (sband->ht_cap.ht_supported &&
1622 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1623 sizeof(sband->ht_cap.mcs),
1624 &sband->ht_cap.mcs) ||
1625 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1626 sband->ht_cap.cap) ||
1627 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1628 sband->ht_cap.ampdu_factor) ||
1629 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1630 sband->ht_cap.ampdu_density)))
1631 return -ENOBUFS;
1632
1633 /* add VHT info */
1634 if (sband->vht_cap.vht_supported &&
1635 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1636 sizeof(sband->vht_cap.vht_mcs),
1637 &sband->vht_cap.vht_mcs) ||
1638 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1639 sband->vht_cap.cap)))
1640 return -ENOBUFS;
1641
1642 if (sband->n_iftype_data) {
1643 struct nlattr *nl_iftype_data =
1644 nla_nest_start_noflag(msg,
1645 NL80211_BAND_ATTR_IFTYPE_DATA);
1646 int err;
1647
1648 if (!nl_iftype_data)
1649 return -ENOBUFS;
1650
1651 for (i = 0; i < sband->n_iftype_data; i++) {
1652 struct nlattr *iftdata;
1653
1654 iftdata = nla_nest_start_noflag(msg, i + 1);
1655 if (!iftdata)
1656 return -ENOBUFS;
1657
1658 err = nl80211_send_iftype_data(msg,
1659 &sband->iftype_data[i]);
1660 if (err)
1661 return err;
1662
1663 nla_nest_end(msg, iftdata);
1664 }
1665
1666 nla_nest_end(msg, nl_iftype_data);
1667 }
1668
1669 /* add EDMG info */
1670 if (sband->edmg_cap.channels &&
1671 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1672 sband->edmg_cap.channels) ||
1673 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1674 sband->edmg_cap.bw_config)))
1675
1676 return -ENOBUFS;
1677
1678 /* add bitrates */
1679 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1680 if (!nl_rates)
1681 return -ENOBUFS;
1682
1683 for (i = 0; i < sband->n_bitrates; i++) {
1684 nl_rate = nla_nest_start_noflag(msg, i);
1685 if (!nl_rate)
1686 return -ENOBUFS;
1687
1688 rate = &sband->bitrates[i];
1689 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1690 rate->bitrate))
1691 return -ENOBUFS;
1692 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1693 nla_put_flag(msg,
1694 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1695 return -ENOBUFS;
1696
1697 nla_nest_end(msg, nl_rate);
1698 }
1699
1700 nla_nest_end(msg, nl_rates);
1701
1702 return 0;
1703 }
1704
1705 static int
1706 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1707 const struct ieee80211_txrx_stypes *mgmt_stypes)
1708 {
1709 u16 stypes;
1710 struct nlattr *nl_ftypes, *nl_ifs;
1711 enum nl80211_iftype ift;
1712 int i;
1713
1714 if (!mgmt_stypes)
1715 return 0;
1716
1717 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1718 if (!nl_ifs)
1719 return -ENOBUFS;
1720
1721 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1722 nl_ftypes = nla_nest_start_noflag(msg, ift);
1723 if (!nl_ftypes)
1724 return -ENOBUFS;
1725 i = 0;
1726 stypes = mgmt_stypes[ift].tx;
1727 while (stypes) {
1728 if ((stypes & 1) &&
1729 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1730 (i << 4) | IEEE80211_FTYPE_MGMT))
1731 return -ENOBUFS;
1732 stypes >>= 1;
1733 i++;
1734 }
1735 nla_nest_end(msg, nl_ftypes);
1736 }
1737
1738 nla_nest_end(msg, nl_ifs);
1739
1740 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1741 if (!nl_ifs)
1742 return -ENOBUFS;
1743
1744 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1745 nl_ftypes = nla_nest_start_noflag(msg, ift);
1746 if (!nl_ftypes)
1747 return -ENOBUFS;
1748 i = 0;
1749 stypes = mgmt_stypes[ift].rx;
1750 while (stypes) {
1751 if ((stypes & 1) &&
1752 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1753 (i << 4) | IEEE80211_FTYPE_MGMT))
1754 return -ENOBUFS;
1755 stypes >>= 1;
1756 i++;
1757 }
1758 nla_nest_end(msg, nl_ftypes);
1759 }
1760 nla_nest_end(msg, nl_ifs);
1761
1762 return 0;
1763 }
1764
1765 #define CMD(op, n) \
1766 do { \
1767 if (rdev->ops->op) { \
1768 i++; \
1769 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1770 goto nla_put_failure; \
1771 } \
1772 } while (0)
1773
1774 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1775 struct sk_buff *msg)
1776 {
1777 int i = 0;
1778
1779 /*
1780 * do *NOT* add anything into this function, new things need to be
1781 * advertised only to new versions of userspace that can deal with
1782 * the split (and they can't possibly care about new features...
1783 */
1784 CMD(add_virtual_intf, NEW_INTERFACE);
1785 CMD(change_virtual_intf, SET_INTERFACE);
1786 CMD(add_key, NEW_KEY);
1787 CMD(start_ap, START_AP);
1788 CMD(add_station, NEW_STATION);
1789 CMD(add_mpath, NEW_MPATH);
1790 CMD(update_mesh_config, SET_MESH_CONFIG);
1791 CMD(change_bss, SET_BSS);
1792 CMD(auth, AUTHENTICATE);
1793 CMD(assoc, ASSOCIATE);
1794 CMD(deauth, DEAUTHENTICATE);
1795 CMD(disassoc, DISASSOCIATE);
1796 CMD(join_ibss, JOIN_IBSS);
1797 CMD(join_mesh, JOIN_MESH);
1798 CMD(set_pmksa, SET_PMKSA);
1799 CMD(del_pmksa, DEL_PMKSA);
1800 CMD(flush_pmksa, FLUSH_PMKSA);
1801 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1802 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1803 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1804 CMD(mgmt_tx, FRAME);
1805 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1806 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1807 i++;
1808 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1809 goto nla_put_failure;
1810 }
1811 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1812 rdev->ops->join_mesh) {
1813 i++;
1814 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1815 goto nla_put_failure;
1816 }
1817 CMD(set_wds_peer, SET_WDS_PEER);
1818 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1819 CMD(tdls_mgmt, TDLS_MGMT);
1820 CMD(tdls_oper, TDLS_OPER);
1821 }
1822 if (rdev->wiphy.max_sched_scan_reqs)
1823 CMD(sched_scan_start, START_SCHED_SCAN);
1824 CMD(probe_client, PROBE_CLIENT);
1825 CMD(set_noack_map, SET_NOACK_MAP);
1826 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1827 i++;
1828 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1829 goto nla_put_failure;
1830 }
1831 CMD(start_p2p_device, START_P2P_DEVICE);
1832 CMD(set_mcast_rate, SET_MCAST_RATE);
1833 #ifdef CONFIG_NL80211_TESTMODE
1834 CMD(testmode_cmd, TESTMODE);
1835 #endif
1836
1837 if (rdev->ops->connect || rdev->ops->auth) {
1838 i++;
1839 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1840 goto nla_put_failure;
1841 }
1842
1843 if (rdev->ops->disconnect || rdev->ops->deauth) {
1844 i++;
1845 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1846 goto nla_put_failure;
1847 }
1848
1849 return i;
1850 nla_put_failure:
1851 return -ENOBUFS;
1852 }
1853
1854 static int
1855 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1856 struct sk_buff *msg)
1857 {
1858 struct nlattr *ftm;
1859
1860 if (!cap->ftm.supported)
1861 return 0;
1862
1863 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1864 if (!ftm)
1865 return -ENOBUFS;
1866
1867 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1868 return -ENOBUFS;
1869 if (cap->ftm.non_asap &&
1870 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1871 return -ENOBUFS;
1872 if (cap->ftm.request_lci &&
1873 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1874 return -ENOBUFS;
1875 if (cap->ftm.request_civicloc &&
1876 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1877 return -ENOBUFS;
1878 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1879 cap->ftm.preambles))
1880 return -ENOBUFS;
1881 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1882 cap->ftm.bandwidths))
1883 return -ENOBUFS;
1884 if (cap->ftm.max_bursts_exponent >= 0 &&
1885 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1886 cap->ftm.max_bursts_exponent))
1887 return -ENOBUFS;
1888 if (cap->ftm.max_ftms_per_burst &&
1889 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1890 cap->ftm.max_ftms_per_burst))
1891 return -ENOBUFS;
1892 if (cap->ftm.trigger_based &&
1893 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1894 return -ENOBUFS;
1895 if (cap->ftm.non_trigger_based &&
1896 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1897 return -ENOBUFS;
1898
1899 nla_nest_end(msg, ftm);
1900 return 0;
1901 }
1902
1903 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1904 struct sk_buff *msg)
1905 {
1906 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1907 struct nlattr *pmsr, *caps;
1908
1909 if (!cap)
1910 return 0;
1911
1912 /*
1913 * we don't need to clean up anything here since the caller
1914 * will genlmsg_cancel() if we fail
1915 */
1916
1917 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1918 if (!pmsr)
1919 return -ENOBUFS;
1920
1921 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1922 return -ENOBUFS;
1923
1924 if (cap->report_ap_tsf &&
1925 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1926 return -ENOBUFS;
1927
1928 if (cap->randomize_mac_addr &&
1929 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1930 return -ENOBUFS;
1931
1932 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1933 if (!caps)
1934 return -ENOBUFS;
1935
1936 if (nl80211_send_pmsr_ftm_capa(cap, msg))
1937 return -ENOBUFS;
1938
1939 nla_nest_end(msg, caps);
1940 nla_nest_end(msg, pmsr);
1941
1942 return 0;
1943 }
1944
1945 static int
1946 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1947 struct sk_buff *msg)
1948 {
1949 int i;
1950 struct nlattr *nested, *nested_akms;
1951 const struct wiphy_iftype_akm_suites *iftype_akms;
1952
1953 if (!rdev->wiphy.num_iftype_akm_suites ||
1954 !rdev->wiphy.iftype_akm_suites)
1955 return 0;
1956
1957 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1958 if (!nested)
1959 return -ENOBUFS;
1960
1961 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1962 nested_akms = nla_nest_start(msg, i + 1);
1963 if (!nested_akms)
1964 return -ENOBUFS;
1965
1966 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1967
1968 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1969 iftype_akms->iftypes_mask))
1970 return -ENOBUFS;
1971
1972 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1973 sizeof(u32) * iftype_akms->n_akm_suites,
1974 iftype_akms->akm_suites)) {
1975 return -ENOBUFS;
1976 }
1977 nla_nest_end(msg, nested_akms);
1978 }
1979
1980 nla_nest_end(msg, nested);
1981
1982 return 0;
1983 }
1984
1985 static int
1986 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1987 struct sk_buff *msg)
1988 {
1989 struct nlattr *supp;
1990
1991 if (!rdev->wiphy.tid_config_support.vif &&
1992 !rdev->wiphy.tid_config_support.peer)
1993 return 0;
1994
1995 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1996 if (!supp)
1997 return -ENOSPC;
1998
1999 if (rdev->wiphy.tid_config_support.vif &&
2000 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2001 rdev->wiphy.tid_config_support.vif,
2002 NL80211_TID_CONFIG_ATTR_PAD))
2003 goto fail;
2004
2005 if (rdev->wiphy.tid_config_support.peer &&
2006 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2007 rdev->wiphy.tid_config_support.peer,
2008 NL80211_TID_CONFIG_ATTR_PAD))
2009 goto fail;
2010
2011 /* for now we just use the same value ... makes more sense */
2012 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2013 rdev->wiphy.tid_config_support.max_retry))
2014 goto fail;
2015 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2016 rdev->wiphy.tid_config_support.max_retry))
2017 goto fail;
2018
2019 nla_nest_end(msg, supp);
2020
2021 return 0;
2022 fail:
2023 nla_nest_cancel(msg, supp);
2024 return -ENOBUFS;
2025 }
2026
2027 struct nl80211_dump_wiphy_state {
2028 s64 filter_wiphy;
2029 long start;
2030 long split_start, band_start, chan_start, capa_start;
2031 bool split;
2032 };
2033
2034 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2035 enum nl80211_commands cmd,
2036 struct sk_buff *msg, u32 portid, u32 seq,
2037 int flags, struct nl80211_dump_wiphy_state *state)
2038 {
2039 void *hdr;
2040 struct nlattr *nl_bands, *nl_band;
2041 struct nlattr *nl_freqs, *nl_freq;
2042 struct nlattr *nl_cmds;
2043 enum nl80211_band band;
2044 struct ieee80211_channel *chan;
2045 int i;
2046 const struct ieee80211_txrx_stypes *mgmt_stypes =
2047 rdev->wiphy.mgmt_stypes;
2048 u32 features;
2049
2050 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2051 if (!hdr)
2052 return -ENOBUFS;
2053
2054 if (WARN_ON(!state))
2055 return -EINVAL;
2056
2057 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2058 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2059 wiphy_name(&rdev->wiphy)) ||
2060 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2061 cfg80211_rdev_list_generation))
2062 goto nla_put_failure;
2063
2064 if (cmd != NL80211_CMD_NEW_WIPHY)
2065 goto finish;
2066
2067 switch (state->split_start) {
2068 case 0:
2069 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2070 rdev->wiphy.retry_short) ||
2071 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2072 rdev->wiphy.retry_long) ||
2073 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2074 rdev->wiphy.frag_threshold) ||
2075 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2076 rdev->wiphy.rts_threshold) ||
2077 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2078 rdev->wiphy.coverage_class) ||
2079 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2080 rdev->wiphy.max_scan_ssids) ||
2081 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2082 rdev->wiphy.max_sched_scan_ssids) ||
2083 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2084 rdev->wiphy.max_scan_ie_len) ||
2085 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2086 rdev->wiphy.max_sched_scan_ie_len) ||
2087 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2088 rdev->wiphy.max_match_sets) ||
2089 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2090 rdev->wiphy.max_sched_scan_plans) ||
2091 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2092 rdev->wiphy.max_sched_scan_plan_interval) ||
2093 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2094 rdev->wiphy.max_sched_scan_plan_iterations))
2095 goto nla_put_failure;
2096
2097 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2098 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2099 goto nla_put_failure;
2100 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2101 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2102 goto nla_put_failure;
2103 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2104 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2105 goto nla_put_failure;
2106 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2107 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2108 goto nla_put_failure;
2109 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2110 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2111 goto nla_put_failure;
2112 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2113 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2114 goto nla_put_failure;
2115 state->split_start++;
2116 if (state->split)
2117 break;
2118 /* fall through */
2119 case 1:
2120 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2121 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2122 rdev->wiphy.cipher_suites))
2123 goto nla_put_failure;
2124
2125 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2126 rdev->wiphy.max_num_pmkids))
2127 goto nla_put_failure;
2128
2129 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2130 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2131 goto nla_put_failure;
2132
2133 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2134 rdev->wiphy.available_antennas_tx) ||
2135 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2136 rdev->wiphy.available_antennas_rx))
2137 goto nla_put_failure;
2138
2139 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2140 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2141 rdev->wiphy.probe_resp_offload))
2142 goto nla_put_failure;
2143
2144 if ((rdev->wiphy.available_antennas_tx ||
2145 rdev->wiphy.available_antennas_rx) &&
2146 rdev->ops->get_antenna) {
2147 u32 tx_ant = 0, rx_ant = 0;
2148 int res;
2149
2150 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2151 if (!res) {
2152 if (nla_put_u32(msg,
2153 NL80211_ATTR_WIPHY_ANTENNA_TX,
2154 tx_ant) ||
2155 nla_put_u32(msg,
2156 NL80211_ATTR_WIPHY_ANTENNA_RX,
2157 rx_ant))
2158 goto nla_put_failure;
2159 }
2160 }
2161
2162 state->split_start++;
2163 if (state->split)
2164 break;
2165 /* fall through */
2166 case 2:
2167 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2168 rdev->wiphy.interface_modes))
2169 goto nla_put_failure;
2170 state->split_start++;
2171 if (state->split)
2172 break;
2173 /* fall through */
2174 case 3:
2175 nl_bands = nla_nest_start_noflag(msg,
2176 NL80211_ATTR_WIPHY_BANDS);
2177 if (!nl_bands)
2178 goto nla_put_failure;
2179
2180 for (band = state->band_start;
2181 band < NUM_NL80211_BANDS; band++) {
2182 struct ieee80211_supported_band *sband;
2183
2184 sband = rdev->wiphy.bands[band];
2185
2186 if (!sband)
2187 continue;
2188
2189 nl_band = nla_nest_start_noflag(msg, band);
2190 if (!nl_band)
2191 goto nla_put_failure;
2192
2193 switch (state->chan_start) {
2194 case 0:
2195 if (nl80211_send_band_rateinfo(msg, sband))
2196 goto nla_put_failure;
2197 state->chan_start++;
2198 if (state->split)
2199 break;
2200 /* fall through */
2201 default:
2202 /* add frequencies */
2203 nl_freqs = nla_nest_start_noflag(msg,
2204 NL80211_BAND_ATTR_FREQS);
2205 if (!nl_freqs)
2206 goto nla_put_failure;
2207
2208 for (i = state->chan_start - 1;
2209 i < sband->n_channels;
2210 i++) {
2211 nl_freq = nla_nest_start_noflag(msg,
2212 i);
2213 if (!nl_freq)
2214 goto nla_put_failure;
2215
2216 chan = &sband->channels[i];
2217
2218 if (nl80211_msg_put_channel(
2219 msg, &rdev->wiphy, chan,
2220 state->split))
2221 goto nla_put_failure;
2222
2223 nla_nest_end(msg, nl_freq);
2224 if (state->split)
2225 break;
2226 }
2227 if (i < sband->n_channels)
2228 state->chan_start = i + 2;
2229 else
2230 state->chan_start = 0;
2231 nla_nest_end(msg, nl_freqs);
2232 }
2233
2234 nla_nest_end(msg, nl_band);
2235
2236 if (state->split) {
2237 /* start again here */
2238 if (state->chan_start)
2239 band--;
2240 break;
2241 }
2242 }
2243 nla_nest_end(msg, nl_bands);
2244
2245 if (band < NUM_NL80211_BANDS)
2246 state->band_start = band + 1;
2247 else
2248 state->band_start = 0;
2249
2250 /* if bands & channels are done, continue outside */
2251 if (state->band_start == 0 && state->chan_start == 0)
2252 state->split_start++;
2253 if (state->split)
2254 break;
2255 /* fall through */
2256 case 4:
2257 nl_cmds = nla_nest_start_noflag(msg,
2258 NL80211_ATTR_SUPPORTED_COMMANDS);
2259 if (!nl_cmds)
2260 goto nla_put_failure;
2261
2262 i = nl80211_add_commands_unsplit(rdev, msg);
2263 if (i < 0)
2264 goto nla_put_failure;
2265 if (state->split) {
2266 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2267 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2268 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2269 CMD(channel_switch, CHANNEL_SWITCH);
2270 CMD(set_qos_map, SET_QOS_MAP);
2271 if (rdev->wiphy.features &
2272 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2273 CMD(add_tx_ts, ADD_TX_TS);
2274 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2275 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2276 CMD(update_ft_ies, UPDATE_FT_IES);
2277 }
2278 #undef CMD
2279
2280 nla_nest_end(msg, nl_cmds);
2281 state->split_start++;
2282 if (state->split)
2283 break;
2284 /* fall through */
2285 case 5:
2286 if (rdev->ops->remain_on_channel &&
2287 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2288 nla_put_u32(msg,
2289 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2290 rdev->wiphy.max_remain_on_channel_duration))
2291 goto nla_put_failure;
2292
2293 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2294 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2295 goto nla_put_failure;
2296
2297 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2298 goto nla_put_failure;
2299 state->split_start++;
2300 if (state->split)
2301 break;
2302 /* fall through */
2303 case 6:
2304 #ifdef CONFIG_PM
2305 if (nl80211_send_wowlan(msg, rdev, state->split))
2306 goto nla_put_failure;
2307 state->split_start++;
2308 if (state->split)
2309 break;
2310 #else
2311 state->split_start++;
2312 #endif
2313 /* fall through */
2314 case 7:
2315 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2316 rdev->wiphy.software_iftypes))
2317 goto nla_put_failure;
2318
2319 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2320 state->split))
2321 goto nla_put_failure;
2322
2323 state->split_start++;
2324 if (state->split)
2325 break;
2326 /* fall through */
2327 case 8:
2328 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2329 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2330 rdev->wiphy.ap_sme_capa))
2331 goto nla_put_failure;
2332
2333 features = rdev->wiphy.features;
2334 /*
2335 * We can only add the per-channel limit information if the
2336 * dump is split, otherwise it makes it too big. Therefore
2337 * only advertise it in that case.
2338 */
2339 if (state->split)
2340 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2341 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2342 goto nla_put_failure;
2343
2344 if (rdev->wiphy.ht_capa_mod_mask &&
2345 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2346 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2347 rdev->wiphy.ht_capa_mod_mask))
2348 goto nla_put_failure;
2349
2350 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2351 rdev->wiphy.max_acl_mac_addrs &&
2352 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2353 rdev->wiphy.max_acl_mac_addrs))
2354 goto nla_put_failure;
2355
2356 /*
2357 * Any information below this point is only available to
2358 * applications that can deal with it being split. This
2359 * helps ensure that newly added capabilities don't break
2360 * older tools by overrunning their buffers.
2361 *
2362 * We still increment split_start so that in the split
2363 * case we'll continue with more data in the next round,
2364 * but break unconditionally so unsplit data stops here.
2365 */
2366 state->split_start++;
2367 break;
2368 case 9:
2369 if (rdev->wiphy.extended_capabilities &&
2370 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2371 rdev->wiphy.extended_capabilities_len,
2372 rdev->wiphy.extended_capabilities) ||
2373 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2374 rdev->wiphy.extended_capabilities_len,
2375 rdev->wiphy.extended_capabilities_mask)))
2376 goto nla_put_failure;
2377
2378 if (rdev->wiphy.vht_capa_mod_mask &&
2379 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2380 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2381 rdev->wiphy.vht_capa_mod_mask))
2382 goto nla_put_failure;
2383
2384 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2385 rdev->wiphy.perm_addr))
2386 goto nla_put_failure;
2387
2388 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2389 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2390 rdev->wiphy.addr_mask))
2391 goto nla_put_failure;
2392
2393 if (rdev->wiphy.n_addresses > 1) {
2394 void *attr;
2395
2396 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2397 if (!attr)
2398 goto nla_put_failure;
2399
2400 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2401 if (nla_put(msg, i + 1, ETH_ALEN,
2402 rdev->wiphy.addresses[i].addr))
2403 goto nla_put_failure;
2404
2405 nla_nest_end(msg, attr);
2406 }
2407
2408 state->split_start++;
2409 break;
2410 case 10:
2411 if (nl80211_send_coalesce(msg, rdev))
2412 goto nla_put_failure;
2413
2414 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2415 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2416 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2417 goto nla_put_failure;
2418
2419 if (rdev->wiphy.max_ap_assoc_sta &&
2420 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2421 rdev->wiphy.max_ap_assoc_sta))
2422 goto nla_put_failure;
2423
2424 state->split_start++;
2425 break;
2426 case 11:
2427 if (rdev->wiphy.n_vendor_commands) {
2428 const struct nl80211_vendor_cmd_info *info;
2429 struct nlattr *nested;
2430
2431 nested = nla_nest_start_noflag(msg,
2432 NL80211_ATTR_VENDOR_DATA);
2433 if (!nested)
2434 goto nla_put_failure;
2435
2436 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2437 info = &rdev->wiphy.vendor_commands[i].info;
2438 if (nla_put(msg, i + 1, sizeof(*info), info))
2439 goto nla_put_failure;
2440 }
2441 nla_nest_end(msg, nested);
2442 }
2443
2444 if (rdev->wiphy.n_vendor_events) {
2445 const struct nl80211_vendor_cmd_info *info;
2446 struct nlattr *nested;
2447
2448 nested = nla_nest_start_noflag(msg,
2449 NL80211_ATTR_VENDOR_EVENTS);
2450 if (!nested)
2451 goto nla_put_failure;
2452
2453 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2454 info = &rdev->wiphy.vendor_events[i];
2455 if (nla_put(msg, i + 1, sizeof(*info), info))
2456 goto nla_put_failure;
2457 }
2458 nla_nest_end(msg, nested);
2459 }
2460 state->split_start++;
2461 break;
2462 case 12:
2463 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2464 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2465 rdev->wiphy.max_num_csa_counters))
2466 goto nla_put_failure;
2467
2468 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2469 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2470 goto nla_put_failure;
2471
2472 if (rdev->wiphy.max_sched_scan_reqs &&
2473 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2474 rdev->wiphy.max_sched_scan_reqs))
2475 goto nla_put_failure;
2476
2477 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2478 sizeof(rdev->wiphy.ext_features),
2479 rdev->wiphy.ext_features))
2480 goto nla_put_failure;
2481
2482 if (rdev->wiphy.bss_select_support) {
2483 struct nlattr *nested;
2484 u32 bss_select_support = rdev->wiphy.bss_select_support;
2485
2486 nested = nla_nest_start_noflag(msg,
2487 NL80211_ATTR_BSS_SELECT);
2488 if (!nested)
2489 goto nla_put_failure;
2490
2491 i = 0;
2492 while (bss_select_support) {
2493 if ((bss_select_support & 1) &&
2494 nla_put_flag(msg, i))
2495 goto nla_put_failure;
2496 i++;
2497 bss_select_support >>= 1;
2498 }
2499 nla_nest_end(msg, nested);
2500 }
2501
2502 state->split_start++;
2503 break;
2504 case 13:
2505 if (rdev->wiphy.num_iftype_ext_capab &&
2506 rdev->wiphy.iftype_ext_capab) {
2507 struct nlattr *nested_ext_capab, *nested;
2508
2509 nested = nla_nest_start_noflag(msg,
2510 NL80211_ATTR_IFTYPE_EXT_CAPA);
2511 if (!nested)
2512 goto nla_put_failure;
2513
2514 for (i = state->capa_start;
2515 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2516 const struct wiphy_iftype_ext_capab *capab;
2517
2518 capab = &rdev->wiphy.iftype_ext_capab[i];
2519
2520 nested_ext_capab = nla_nest_start_noflag(msg,
2521 i);
2522 if (!nested_ext_capab ||
2523 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2524 capab->iftype) ||
2525 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2526 capab->extended_capabilities_len,
2527 capab->extended_capabilities) ||
2528 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2529 capab->extended_capabilities_len,
2530 capab->extended_capabilities_mask))
2531 goto nla_put_failure;
2532
2533 nla_nest_end(msg, nested_ext_capab);
2534 if (state->split)
2535 break;
2536 }
2537 nla_nest_end(msg, nested);
2538 if (i < rdev->wiphy.num_iftype_ext_capab) {
2539 state->capa_start = i + 1;
2540 break;
2541 }
2542 }
2543
2544 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2545 rdev->wiphy.nan_supported_bands))
2546 goto nla_put_failure;
2547
2548 if (wiphy_ext_feature_isset(&rdev->wiphy,
2549 NL80211_EXT_FEATURE_TXQS)) {
2550 struct cfg80211_txq_stats txqstats = {};
2551 int res;
2552
2553 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2554 if (!res &&
2555 !nl80211_put_txq_stats(msg, &txqstats,
2556 NL80211_ATTR_TXQ_STATS))
2557 goto nla_put_failure;
2558
2559 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2560 rdev->wiphy.txq_limit))
2561 goto nla_put_failure;
2562 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2563 rdev->wiphy.txq_memory_limit))
2564 goto nla_put_failure;
2565 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2566 rdev->wiphy.txq_quantum))
2567 goto nla_put_failure;
2568 }
2569
2570 state->split_start++;
2571 break;
2572 case 14:
2573 if (nl80211_send_pmsr_capa(rdev, msg))
2574 goto nla_put_failure;
2575
2576 state->split_start++;
2577 break;
2578 case 15:
2579 if (rdev->wiphy.akm_suites &&
2580 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2581 sizeof(u32) * rdev->wiphy.n_akm_suites,
2582 rdev->wiphy.akm_suites))
2583 goto nla_put_failure;
2584
2585 if (nl80211_put_iftype_akm_suites(rdev, msg))
2586 goto nla_put_failure;
2587
2588 if (nl80211_put_tid_config_support(rdev, msg))
2589 goto nla_put_failure;
2590
2591 /* done */
2592 state->split_start = 0;
2593 break;
2594 }
2595 finish:
2596 genlmsg_end(msg, hdr);
2597 return 0;
2598
2599 nla_put_failure:
2600 genlmsg_cancel(msg, hdr);
2601 return -EMSGSIZE;
2602 }
2603
2604 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2605 struct netlink_callback *cb,
2606 struct nl80211_dump_wiphy_state *state)
2607 {
2608 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2609 int ret;
2610
2611 if (!tb)
2612 return -ENOMEM;
2613
2614 ret = nlmsg_parse_deprecated(cb->nlh,
2615 GENL_HDRLEN + nl80211_fam.hdrsize,
2616 tb, nl80211_fam.maxattr,
2617 nl80211_policy, NULL);
2618 /* ignore parse errors for backward compatibility */
2619 if (ret) {
2620 ret = 0;
2621 goto out;
2622 }
2623
2624 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2625 if (tb[NL80211_ATTR_WIPHY])
2626 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2627 if (tb[NL80211_ATTR_WDEV])
2628 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2629 if (tb[NL80211_ATTR_IFINDEX]) {
2630 struct net_device *netdev;
2631 struct cfg80211_registered_device *rdev;
2632 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2633
2634 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2635 if (!netdev) {
2636 ret = -ENODEV;
2637 goto out;
2638 }
2639 if (netdev->ieee80211_ptr) {
2640 rdev = wiphy_to_rdev(
2641 netdev->ieee80211_ptr->wiphy);
2642 state->filter_wiphy = rdev->wiphy_idx;
2643 }
2644 }
2645
2646 ret = 0;
2647 out:
2648 kfree(tb);
2649 return ret;
2650 }
2651
2652 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2653 {
2654 int idx = 0, ret;
2655 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2656 struct cfg80211_registered_device *rdev;
2657
2658 rtnl_lock();
2659 if (!state) {
2660 state = kzalloc(sizeof(*state), GFP_KERNEL);
2661 if (!state) {
2662 rtnl_unlock();
2663 return -ENOMEM;
2664 }
2665 state->filter_wiphy = -1;
2666 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2667 if (ret) {
2668 kfree(state);
2669 rtnl_unlock();
2670 return ret;
2671 }
2672 cb->args[0] = (long)state;
2673 }
2674
2675 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2676 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2677 continue;
2678 if (++idx <= state->start)
2679 continue;
2680 if (state->filter_wiphy != -1 &&
2681 state->filter_wiphy != rdev->wiphy_idx)
2682 continue;
2683 /* attempt to fit multiple wiphy data chunks into the skb */
2684 do {
2685 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2686 skb,
2687 NETLINK_CB(cb->skb).portid,
2688 cb->nlh->nlmsg_seq,
2689 NLM_F_MULTI, state);
2690 if (ret < 0) {
2691 /*
2692 * If sending the wiphy data didn't fit (ENOBUFS
2693 * or EMSGSIZE returned), this SKB is still
2694 * empty (so it's not too big because another
2695 * wiphy dataset is already in the skb) and
2696 * we've not tried to adjust the dump allocation
2697 * yet ... then adjust the alloc size to be
2698 * bigger, and return 1 but with the empty skb.
2699 * This results in an empty message being RX'ed
2700 * in userspace, but that is ignored.
2701 *
2702 * We can then retry with the larger buffer.
2703 */
2704 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2705 !skb->len && !state->split &&
2706 cb->min_dump_alloc < 4096) {
2707 cb->min_dump_alloc = 4096;
2708 state->split_start = 0;
2709 rtnl_unlock();
2710 return 1;
2711 }
2712 idx--;
2713 break;
2714 }
2715 } while (state->split_start > 0);
2716 break;
2717 }
2718 rtnl_unlock();
2719
2720 state->start = idx;
2721
2722 return skb->len;
2723 }
2724
2725 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2726 {
2727 kfree((void *)cb->args[0]);
2728 return 0;
2729 }
2730
2731 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2732 {
2733 struct sk_buff *msg;
2734 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2735 struct nl80211_dump_wiphy_state state = {};
2736
2737 msg = nlmsg_new(4096, GFP_KERNEL);
2738 if (!msg)
2739 return -ENOMEM;
2740
2741 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2742 info->snd_portid, info->snd_seq, 0,
2743 &state) < 0) {
2744 nlmsg_free(msg);
2745 return -ENOBUFS;
2746 }
2747
2748 return genlmsg_reply(msg, info);
2749 }
2750
2751 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2752 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2753 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2754 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2755 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2756 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2757 };
2758
2759 static int parse_txq_params(struct nlattr *tb[],
2760 struct ieee80211_txq_params *txq_params)
2761 {
2762 u8 ac;
2763
2764 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2765 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2766 !tb[NL80211_TXQ_ATTR_AIFS])
2767 return -EINVAL;
2768
2769 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2770 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2771 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2772 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2773 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2774
2775 if (ac >= NL80211_NUM_ACS)
2776 return -EINVAL;
2777 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2778 return 0;
2779 }
2780
2781 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2782 {
2783 /*
2784 * You can only set the channel explicitly for WDS interfaces,
2785 * all others have their channel managed via their respective
2786 * "establish a connection" command (connect, join, ...)
2787 *
2788 * For AP/GO and mesh mode, the channel can be set with the
2789 * channel userspace API, but is only stored and passed to the
2790 * low-level driver when the AP starts or the mesh is joined.
2791 * This is for backward compatibility, userspace can also give
2792 * the channel in the start-ap or join-mesh commands instead.
2793 *
2794 * Monitors are special as they are normally slaved to
2795 * whatever else is going on, so they have their own special
2796 * operation to set the monitor channel if possible.
2797 */
2798 return !wdev ||
2799 wdev->iftype == NL80211_IFTYPE_AP ||
2800 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2801 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2802 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2803 }
2804
2805 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2806 struct genl_info *info,
2807 struct cfg80211_chan_def *chandef)
2808 {
2809 struct netlink_ext_ack *extack = info->extack;
2810 struct nlattr **attrs = info->attrs;
2811 u32 control_freq;
2812
2813 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2814 return -EINVAL;
2815
2816 control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2817
2818 memset(chandef, 0, sizeof(*chandef));
2819
2820 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2821 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2822 chandef->center_freq1 = control_freq;
2823 chandef->center_freq2 = 0;
2824
2825 /* Primary channel not allowed */
2826 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2827 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2828 "Channel is disabled");
2829 return -EINVAL;
2830 }
2831
2832 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2833 enum nl80211_channel_type chantype;
2834
2835 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2836
2837 switch (chantype) {
2838 case NL80211_CHAN_NO_HT:
2839 case NL80211_CHAN_HT20:
2840 case NL80211_CHAN_HT40PLUS:
2841 case NL80211_CHAN_HT40MINUS:
2842 cfg80211_chandef_create(chandef, chandef->chan,
2843 chantype);
2844 /* user input for center_freq is incorrect */
2845 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2846 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2847 NL_SET_ERR_MSG_ATTR(extack,
2848 attrs[NL80211_ATTR_CENTER_FREQ1],
2849 "bad center frequency 1");
2850 return -EINVAL;
2851 }
2852 /* center_freq2 must be zero */
2853 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2854 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2855 NL_SET_ERR_MSG_ATTR(extack,
2856 attrs[NL80211_ATTR_CENTER_FREQ2],
2857 "center frequency 2 can't be used");
2858 return -EINVAL;
2859 }
2860 break;
2861 default:
2862 NL_SET_ERR_MSG_ATTR(extack,
2863 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2864 "invalid channel type");
2865 return -EINVAL;
2866 }
2867 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2868 chandef->width =
2869 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2870 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2871 chandef->center_freq1 =
2872 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2873 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2874 chandef->center_freq2 =
2875 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2876 }
2877
2878 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2879 chandef->edmg.channels =
2880 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2881
2882 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2883 chandef->edmg.bw_config =
2884 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2885 } else {
2886 chandef->edmg.bw_config = 0;
2887 chandef->edmg.channels = 0;
2888 }
2889
2890 if (!cfg80211_chandef_valid(chandef)) {
2891 NL_SET_ERR_MSG(extack, "invalid channel definition");
2892 return -EINVAL;
2893 }
2894
2895 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2896 IEEE80211_CHAN_DISABLED)) {
2897 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2898 return -EINVAL;
2899 }
2900
2901 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2902 chandef->width == NL80211_CHAN_WIDTH_10) &&
2903 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2904 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2905 return -EINVAL;
2906 }
2907
2908 return 0;
2909 }
2910
2911 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2912 struct net_device *dev,
2913 struct genl_info *info)
2914 {
2915 struct cfg80211_chan_def chandef;
2916 int result;
2917 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2918 struct wireless_dev *wdev = NULL;
2919
2920 if (dev)
2921 wdev = dev->ieee80211_ptr;
2922 if (!nl80211_can_set_dev_channel(wdev))
2923 return -EOPNOTSUPP;
2924 if (wdev)
2925 iftype = wdev->iftype;
2926
2927 result = nl80211_parse_chandef(rdev, info, &chandef);
2928 if (result)
2929 return result;
2930
2931 switch (iftype) {
2932 case NL80211_IFTYPE_AP:
2933 case NL80211_IFTYPE_P2P_GO:
2934 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2935 iftype)) {
2936 result = -EINVAL;
2937 break;
2938 }
2939 if (wdev->beacon_interval) {
2940 if (!dev || !rdev->ops->set_ap_chanwidth ||
2941 !(rdev->wiphy.features &
2942 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2943 result = -EBUSY;
2944 break;
2945 }
2946
2947 /* Only allow dynamic channel width changes */
2948 if (chandef.chan != wdev->preset_chandef.chan) {
2949 result = -EBUSY;
2950 break;
2951 }
2952 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2953 if (result)
2954 break;
2955 }
2956 wdev->preset_chandef = chandef;
2957 result = 0;
2958 break;
2959 case NL80211_IFTYPE_MESH_POINT:
2960 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2961 break;
2962 case NL80211_IFTYPE_MONITOR:
2963 result = cfg80211_set_monitor_channel(rdev, &chandef);
2964 break;
2965 default:
2966 result = -EINVAL;
2967 }
2968
2969 return result;
2970 }
2971
2972 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2973 {
2974 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2975 struct net_device *netdev = info->user_ptr[1];
2976
2977 return __nl80211_set_channel(rdev, netdev, info);
2978 }
2979
2980 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2981 {
2982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2983 struct net_device *dev = info->user_ptr[1];
2984 struct wireless_dev *wdev = dev->ieee80211_ptr;
2985 const u8 *bssid;
2986
2987 if (!info->attrs[NL80211_ATTR_MAC])
2988 return -EINVAL;
2989
2990 if (netif_running(dev))
2991 return -EBUSY;
2992
2993 if (!rdev->ops->set_wds_peer)
2994 return -EOPNOTSUPP;
2995
2996 if (wdev->iftype != NL80211_IFTYPE_WDS)
2997 return -EOPNOTSUPP;
2998
2999 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3000 return rdev_set_wds_peer(rdev, dev, bssid);
3001 }
3002
3003 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3004 {
3005 struct cfg80211_registered_device *rdev;
3006 struct net_device *netdev = NULL;
3007 struct wireless_dev *wdev;
3008 int result = 0, rem_txq_params = 0;
3009 struct nlattr *nl_txq_params;
3010 u32 changed;
3011 u8 retry_short = 0, retry_long = 0;
3012 u32 frag_threshold = 0, rts_threshold = 0;
3013 u8 coverage_class = 0;
3014 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3015
3016 ASSERT_RTNL();
3017
3018 /*
3019 * Try to find the wiphy and netdev. Normally this
3020 * function shouldn't need the netdev, but this is
3021 * done for backward compatibility -- previously
3022 * setting the channel was done per wiphy, but now
3023 * it is per netdev. Previous userland like hostapd
3024 * also passed a netdev to set_wiphy, so that it is
3025 * possible to let that go to the right netdev!
3026 */
3027
3028 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3029 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3030
3031 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3032 if (netdev && netdev->ieee80211_ptr)
3033 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3034 else
3035 netdev = NULL;
3036 }
3037
3038 if (!netdev) {
3039 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3040 info->attrs);
3041 if (IS_ERR(rdev))
3042 return PTR_ERR(rdev);
3043 wdev = NULL;
3044 netdev = NULL;
3045 result = 0;
3046 } else
3047 wdev = netdev->ieee80211_ptr;
3048
3049 /*
3050 * end workaround code, by now the rdev is available
3051 * and locked, and wdev may or may not be NULL.
3052 */
3053
3054 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3055 result = cfg80211_dev_rename(
3056 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3057
3058 if (result)
3059 return result;
3060
3061 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3062 struct ieee80211_txq_params txq_params;
3063 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3064
3065 if (!rdev->ops->set_txq_params)
3066 return -EOPNOTSUPP;
3067
3068 if (!netdev)
3069 return -EINVAL;
3070
3071 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3072 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3073 return -EINVAL;
3074
3075 if (!netif_running(netdev))
3076 return -ENETDOWN;
3077
3078 nla_for_each_nested(nl_txq_params,
3079 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3080 rem_txq_params) {
3081 result = nla_parse_nested_deprecated(tb,
3082 NL80211_TXQ_ATTR_MAX,
3083 nl_txq_params,
3084 txq_params_policy,
3085 info->extack);
3086 if (result)
3087 return result;
3088 result = parse_txq_params(tb, &txq_params);
3089 if (result)
3090 return result;
3091
3092 result = rdev_set_txq_params(rdev, netdev,
3093 &txq_params);
3094 if (result)
3095 return result;
3096 }
3097 }
3098
3099 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3100 result = __nl80211_set_channel(
3101 rdev,
3102 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3103 info);
3104 if (result)
3105 return result;
3106 }
3107
3108 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3109 struct wireless_dev *txp_wdev = wdev;
3110 enum nl80211_tx_power_setting type;
3111 int idx, mbm = 0;
3112
3113 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3114 txp_wdev = NULL;
3115
3116 if (!rdev->ops->set_tx_power)
3117 return -EOPNOTSUPP;
3118
3119 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3120 type = nla_get_u32(info->attrs[idx]);
3121
3122 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3123 (type != NL80211_TX_POWER_AUTOMATIC))
3124 return -EINVAL;
3125
3126 if (type != NL80211_TX_POWER_AUTOMATIC) {
3127 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3128 mbm = nla_get_u32(info->attrs[idx]);
3129 }
3130
3131 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3132 if (result)
3133 return result;
3134 }
3135
3136 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3137 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3138 u32 tx_ant, rx_ant;
3139
3140 if ((!rdev->wiphy.available_antennas_tx &&
3141 !rdev->wiphy.available_antennas_rx) ||
3142 !rdev->ops->set_antenna)
3143 return -EOPNOTSUPP;
3144
3145 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3146 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3147
3148 /* reject antenna configurations which don't match the
3149 * available antenna masks, except for the "all" mask */
3150 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3151 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3152 return -EINVAL;
3153
3154 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3155 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3156
3157 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3158 if (result)
3159 return result;
3160 }
3161
3162 changed = 0;
3163
3164 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3165 retry_short = nla_get_u8(
3166 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3167
3168 changed |= WIPHY_PARAM_RETRY_SHORT;
3169 }
3170
3171 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3172 retry_long = nla_get_u8(
3173 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3174
3175 changed |= WIPHY_PARAM_RETRY_LONG;
3176 }
3177
3178 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3179 frag_threshold = nla_get_u32(
3180 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3181 if (frag_threshold < 256)
3182 return -EINVAL;
3183
3184 if (frag_threshold != (u32) -1) {
3185 /*
3186 * Fragments (apart from the last one) are required to
3187 * have even length. Make the fragmentation code
3188 * simpler by stripping LSB should someone try to use
3189 * odd threshold value.
3190 */
3191 frag_threshold &= ~0x1;
3192 }
3193 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3194 }
3195
3196 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3197 rts_threshold = nla_get_u32(
3198 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3199 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3200 }
3201
3202 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3203 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3204 return -EINVAL;
3205
3206 coverage_class = nla_get_u8(
3207 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3208 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3209 }
3210
3211 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3212 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3213 return -EOPNOTSUPP;
3214
3215 changed |= WIPHY_PARAM_DYN_ACK;
3216 }
3217
3218 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3219 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3220 NL80211_EXT_FEATURE_TXQS))
3221 return -EOPNOTSUPP;
3222 txq_limit = nla_get_u32(
3223 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3224 changed |= WIPHY_PARAM_TXQ_LIMIT;
3225 }
3226
3227 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3228 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3229 NL80211_EXT_FEATURE_TXQS))
3230 return -EOPNOTSUPP;
3231 txq_memory_limit = nla_get_u32(
3232 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3233 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3234 }
3235
3236 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3237 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3238 NL80211_EXT_FEATURE_TXQS))
3239 return -EOPNOTSUPP;
3240 txq_quantum = nla_get_u32(
3241 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3242 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3243 }
3244
3245 if (changed) {
3246 u8 old_retry_short, old_retry_long;
3247 u32 old_frag_threshold, old_rts_threshold;
3248 u8 old_coverage_class;
3249 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3250
3251 if (!rdev->ops->set_wiphy_params)
3252 return -EOPNOTSUPP;
3253
3254 old_retry_short = rdev->wiphy.retry_short;
3255 old_retry_long = rdev->wiphy.retry_long;
3256 old_frag_threshold = rdev->wiphy.frag_threshold;
3257 old_rts_threshold = rdev->wiphy.rts_threshold;
3258 old_coverage_class = rdev->wiphy.coverage_class;
3259 old_txq_limit = rdev->wiphy.txq_limit;
3260 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3261 old_txq_quantum = rdev->wiphy.txq_quantum;
3262
3263 if (changed & WIPHY_PARAM_RETRY_SHORT)
3264 rdev->wiphy.retry_short = retry_short;
3265 if (changed & WIPHY_PARAM_RETRY_LONG)
3266 rdev->wiphy.retry_long = retry_long;
3267 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3268 rdev->wiphy.frag_threshold = frag_threshold;
3269 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3270 rdev->wiphy.rts_threshold = rts_threshold;
3271 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3272 rdev->wiphy.coverage_class = coverage_class;
3273 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3274 rdev->wiphy.txq_limit = txq_limit;
3275 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3276 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3277 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3278 rdev->wiphy.txq_quantum = txq_quantum;
3279
3280 result = rdev_set_wiphy_params(rdev, changed);
3281 if (result) {
3282 rdev->wiphy.retry_short = old_retry_short;
3283 rdev->wiphy.retry_long = old_retry_long;
3284 rdev->wiphy.frag_threshold = old_frag_threshold;
3285 rdev->wiphy.rts_threshold = old_rts_threshold;
3286 rdev->wiphy.coverage_class = old_coverage_class;
3287 rdev->wiphy.txq_limit = old_txq_limit;
3288 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3289 rdev->wiphy.txq_quantum = old_txq_quantum;
3290 return result;
3291 }
3292 }
3293 return 0;
3294 }
3295
3296 static int nl80211_send_chandef(struct sk_buff *msg,
3297 const struct cfg80211_chan_def *chandef)
3298 {
3299 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3300 return -EINVAL;
3301
3302 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3303 chandef->chan->center_freq))
3304 return -ENOBUFS;
3305 switch (chandef->width) {
3306 case NL80211_CHAN_WIDTH_20_NOHT:
3307 case NL80211_CHAN_WIDTH_20:
3308 case NL80211_CHAN_WIDTH_40:
3309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3310 cfg80211_get_chandef_type(chandef)))
3311 return -ENOBUFS;
3312 break;
3313 default:
3314 break;
3315 }
3316 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3317 return -ENOBUFS;
3318 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3319 return -ENOBUFS;
3320 if (chandef->center_freq2 &&
3321 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3322 return -ENOBUFS;
3323 return 0;
3324 }
3325
3326 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3327 struct cfg80211_registered_device *rdev,
3328 struct wireless_dev *wdev,
3329 enum nl80211_commands cmd)
3330 {
3331 struct net_device *dev = wdev->netdev;
3332 void *hdr;
3333
3334 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3335 cmd != NL80211_CMD_DEL_INTERFACE &&
3336 cmd != NL80211_CMD_SET_INTERFACE);
3337
3338 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3339 if (!hdr)
3340 return -1;
3341
3342 if (dev &&
3343 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3344 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3345 goto nla_put_failure;
3346
3347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3348 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3349 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3350 NL80211_ATTR_PAD) ||
3351 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3352 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3353 rdev->devlist_generation ^
3354 (cfg80211_rdev_list_generation << 2)) ||
3355 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3356 goto nla_put_failure;
3357
3358 if (rdev->ops->get_channel) {
3359 int ret;
3360 struct cfg80211_chan_def chandef = {};
3361
3362 ret = rdev_get_channel(rdev, wdev, &chandef);
3363 if (ret == 0) {
3364 if (nl80211_send_chandef(msg, &chandef))
3365 goto nla_put_failure;
3366 }
3367 }
3368
3369 if (rdev->ops->get_tx_power) {
3370 int dbm, ret;
3371
3372 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3373 if (ret == 0 &&
3374 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3375 DBM_TO_MBM(dbm)))
3376 goto nla_put_failure;
3377 }
3378
3379 wdev_lock(wdev);
3380 switch (wdev->iftype) {
3381 case NL80211_IFTYPE_AP:
3382 if (wdev->ssid_len &&
3383 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3384 goto nla_put_failure_locked;
3385 break;
3386 case NL80211_IFTYPE_STATION:
3387 case NL80211_IFTYPE_P2P_CLIENT:
3388 case NL80211_IFTYPE_ADHOC: {
3389 const u8 *ssid_ie;
3390 if (!wdev->current_bss)
3391 break;
3392 rcu_read_lock();
3393 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3394 WLAN_EID_SSID);
3395 if (ssid_ie &&
3396 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3397 goto nla_put_failure_rcu_locked;
3398 rcu_read_unlock();
3399 break;
3400 }
3401 default:
3402 /* nothing */
3403 break;
3404 }
3405 wdev_unlock(wdev);
3406
3407 if (rdev->ops->get_txq_stats) {
3408 struct cfg80211_txq_stats txqstats = {};
3409 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3410
3411 if (ret == 0 &&
3412 !nl80211_put_txq_stats(msg, &txqstats,
3413 NL80211_ATTR_TXQ_STATS))
3414 goto nla_put_failure;
3415 }
3416
3417 genlmsg_end(msg, hdr);
3418 return 0;
3419
3420 nla_put_failure_rcu_locked:
3421 rcu_read_unlock();
3422 nla_put_failure_locked:
3423 wdev_unlock(wdev);
3424 nla_put_failure:
3425 genlmsg_cancel(msg, hdr);
3426 return -EMSGSIZE;
3427 }
3428
3429 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3430 {
3431 int wp_idx = 0;
3432 int if_idx = 0;
3433 int wp_start = cb->args[0];
3434 int if_start = cb->args[1];
3435 int filter_wiphy = -1;
3436 struct cfg80211_registered_device *rdev;
3437 struct wireless_dev *wdev;
3438 int ret;
3439
3440 rtnl_lock();
3441 if (!cb->args[2]) {
3442 struct nl80211_dump_wiphy_state state = {
3443 .filter_wiphy = -1,
3444 };
3445
3446 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3447 if (ret)
3448 goto out_unlock;
3449
3450 filter_wiphy = state.filter_wiphy;
3451
3452 /*
3453 * if filtering, set cb->args[2] to +1 since 0 is the default
3454 * value needed to determine that parsing is necessary.
3455 */
3456 if (filter_wiphy >= 0)
3457 cb->args[2] = filter_wiphy + 1;
3458 else
3459 cb->args[2] = -1;
3460 } else if (cb->args[2] > 0) {
3461 filter_wiphy = cb->args[2] - 1;
3462 }
3463
3464 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3465 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3466 continue;
3467 if (wp_idx < wp_start) {
3468 wp_idx++;
3469 continue;
3470 }
3471
3472 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3473 continue;
3474
3475 if_idx = 0;
3476
3477 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3478 if (if_idx < if_start) {
3479 if_idx++;
3480 continue;
3481 }
3482 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3483 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3484 rdev, wdev,
3485 NL80211_CMD_NEW_INTERFACE) < 0) {
3486 goto out;
3487 }
3488 if_idx++;
3489 }
3490
3491 wp_idx++;
3492 }
3493 out:
3494 cb->args[0] = wp_idx;
3495 cb->args[1] = if_idx;
3496
3497 ret = skb->len;
3498 out_unlock:
3499 rtnl_unlock();
3500
3501 return ret;
3502 }
3503
3504 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3505 {
3506 struct sk_buff *msg;
3507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3508 struct wireless_dev *wdev = info->user_ptr[1];
3509
3510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3511 if (!msg)
3512 return -ENOMEM;
3513
3514 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3515 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3516 nlmsg_free(msg);
3517 return -ENOBUFS;
3518 }
3519
3520 return genlmsg_reply(msg, info);
3521 }
3522
3523 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3524 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3525 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3526 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3527 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3528 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3529 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3530 };
3531
3532 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3533 {
3534 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3535 int flag;
3536
3537 *mntrflags = 0;
3538
3539 if (!nla)
3540 return -EINVAL;
3541
3542 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3543 return -EINVAL;
3544
3545 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3546 if (flags[flag])
3547 *mntrflags |= (1<<flag);
3548
3549 *mntrflags |= MONITOR_FLAG_CHANGED;
3550
3551 return 0;
3552 }
3553
3554 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3555 enum nl80211_iftype type,
3556 struct genl_info *info,
3557 struct vif_params *params)
3558 {
3559 bool change = false;
3560 int err;
3561
3562 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3563 if (type != NL80211_IFTYPE_MONITOR)
3564 return -EINVAL;
3565
3566 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3567 &params->flags);
3568 if (err)
3569 return err;
3570
3571 change = true;
3572 }
3573
3574 if (params->flags & MONITOR_FLAG_ACTIVE &&
3575 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3576 return -EOPNOTSUPP;
3577
3578 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3579 const u8 *mumimo_groups;
3580 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3581
3582 if (type != NL80211_IFTYPE_MONITOR)
3583 return -EINVAL;
3584
3585 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3586 return -EOPNOTSUPP;
3587
3588 mumimo_groups =
3589 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3590
3591 /* bits 0 and 63 are reserved and must be zero */
3592 if ((mumimo_groups[0] & BIT(0)) ||
3593 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3594 return -EINVAL;
3595
3596 params->vht_mumimo_groups = mumimo_groups;
3597 change = true;
3598 }
3599
3600 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3601 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3602
3603 if (type != NL80211_IFTYPE_MONITOR)
3604 return -EINVAL;
3605
3606 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3607 return -EOPNOTSUPP;
3608
3609 params->vht_mumimo_follow_addr =
3610 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3611 change = true;
3612 }
3613
3614 return change ? 1 : 0;
3615 }
3616
3617 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3618 struct net_device *netdev, u8 use_4addr,
3619 enum nl80211_iftype iftype)
3620 {
3621 if (!use_4addr) {
3622 if (netdev && netif_is_bridge_port(netdev))
3623 return -EBUSY;
3624 return 0;
3625 }
3626
3627 switch (iftype) {
3628 case NL80211_IFTYPE_AP_VLAN:
3629 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3630 return 0;
3631 break;
3632 case NL80211_IFTYPE_STATION:
3633 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3634 return 0;
3635 break;
3636 default:
3637 break;
3638 }
3639
3640 return -EOPNOTSUPP;
3641 }
3642
3643 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3644 {
3645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3646 struct vif_params params;
3647 int err;
3648 enum nl80211_iftype otype, ntype;
3649 struct net_device *dev = info->user_ptr[1];
3650 bool change = false;
3651
3652 memset(&params, 0, sizeof(params));
3653
3654 otype = ntype = dev->ieee80211_ptr->iftype;
3655
3656 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3657 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3658 if (otype != ntype)
3659 change = true;
3660 }
3661
3662 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3663 struct wireless_dev *wdev = dev->ieee80211_ptr;
3664
3665 if (ntype != NL80211_IFTYPE_MESH_POINT)
3666 return -EINVAL;
3667 if (netif_running(dev))
3668 return -EBUSY;
3669
3670 wdev_lock(wdev);
3671 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3672 IEEE80211_MAX_MESH_ID_LEN);
3673 wdev->mesh_id_up_len =
3674 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3675 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3676 wdev->mesh_id_up_len);
3677 wdev_unlock(wdev);
3678 }
3679
3680 if (info->attrs[NL80211_ATTR_4ADDR]) {
3681 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3682 change = true;
3683 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3684 if (err)
3685 return err;
3686 } else {
3687 params.use_4addr = -1;
3688 }
3689
3690 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3691 if (err < 0)
3692 return err;
3693 if (err > 0)
3694 change = true;
3695
3696 if (change)
3697 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3698 else
3699 err = 0;
3700
3701 if (!err && params.use_4addr != -1)
3702 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3703
3704 if (change && !err) {
3705 struct wireless_dev *wdev = dev->ieee80211_ptr;
3706
3707 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3708 }
3709
3710 return err;
3711 }
3712
3713 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3714 {
3715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3716 struct vif_params params;
3717 struct wireless_dev *wdev;
3718 struct sk_buff *msg;
3719 int err;
3720 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3721
3722 /* to avoid failing a new interface creation due to pending removal */
3723 cfg80211_destroy_ifaces(rdev);
3724
3725 memset(&params, 0, sizeof(params));
3726
3727 if (!info->attrs[NL80211_ATTR_IFNAME])
3728 return -EINVAL;
3729
3730 if (info->attrs[NL80211_ATTR_IFTYPE])
3731 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3732
3733 if (!rdev->ops->add_virtual_intf)
3734 return -EOPNOTSUPP;
3735
3736 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3737 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3738 info->attrs[NL80211_ATTR_MAC]) {
3739 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3740 ETH_ALEN);
3741 if (!is_valid_ether_addr(params.macaddr))
3742 return -EADDRNOTAVAIL;
3743 }
3744
3745 if (info->attrs[NL80211_ATTR_4ADDR]) {
3746 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3747 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3748 if (err)
3749 return err;
3750 }
3751
3752 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3753 return -EOPNOTSUPP;
3754
3755 err = nl80211_parse_mon_options(rdev, type, info, &params);
3756 if (err < 0)
3757 return err;
3758
3759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3760 if (!msg)
3761 return -ENOMEM;
3762
3763 wdev = rdev_add_virtual_intf(rdev,
3764 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3765 NET_NAME_USER, type, &params);
3766 if (WARN_ON(!wdev)) {
3767 nlmsg_free(msg);
3768 return -EPROTO;
3769 } else if (IS_ERR(wdev)) {
3770 nlmsg_free(msg);
3771 return PTR_ERR(wdev);
3772 }
3773
3774 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3775 wdev->owner_nlportid = info->snd_portid;
3776
3777 switch (type) {
3778 case NL80211_IFTYPE_MESH_POINT:
3779 if (!info->attrs[NL80211_ATTR_MESH_ID])
3780 break;
3781 wdev_lock(wdev);
3782 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3783 IEEE80211_MAX_MESH_ID_LEN);
3784 wdev->mesh_id_up_len =
3785 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3786 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3787 wdev->mesh_id_up_len);
3788 wdev_unlock(wdev);
3789 break;
3790 case NL80211_IFTYPE_NAN:
3791 case NL80211_IFTYPE_P2P_DEVICE:
3792 /*
3793 * P2P Device and NAN do not have a netdev, so don't go
3794 * through the netdev notifier and must be added here
3795 */
3796 cfg80211_init_wdev(rdev, wdev);
3797 break;
3798 default:
3799 break;
3800 }
3801
3802 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3803 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3804 nlmsg_free(msg);
3805 return -ENOBUFS;
3806 }
3807
3808 return genlmsg_reply(msg, info);
3809 }
3810
3811 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3812 {
3813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3814 struct wireless_dev *wdev = info->user_ptr[1];
3815
3816 if (!rdev->ops->del_virtual_intf)
3817 return -EOPNOTSUPP;
3818
3819 /*
3820 * If we remove a wireless device without a netdev then clear
3821 * user_ptr[1] so that nl80211_post_doit won't dereference it
3822 * to check if it needs to do dev_put(). Otherwise it crashes
3823 * since the wdev has been freed, unlike with a netdev where
3824 * we need the dev_put() for the netdev to really be freed.
3825 */
3826 if (!wdev->netdev)
3827 info->user_ptr[1] = NULL;
3828
3829 return rdev_del_virtual_intf(rdev, wdev);
3830 }
3831
3832 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3833 {
3834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3835 struct net_device *dev = info->user_ptr[1];
3836 u16 noack_map;
3837
3838 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3839 return -EINVAL;
3840
3841 if (!rdev->ops->set_noack_map)
3842 return -EOPNOTSUPP;
3843
3844 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3845
3846 return rdev_set_noack_map(rdev, dev, noack_map);
3847 }
3848
3849 struct get_key_cookie {
3850 struct sk_buff *msg;
3851 int error;
3852 int idx;
3853 };
3854
3855 static void get_key_callback(void *c, struct key_params *params)
3856 {
3857 struct nlattr *key;
3858 struct get_key_cookie *cookie = c;
3859
3860 if ((params->key &&
3861 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3862 params->key_len, params->key)) ||
3863 (params->seq &&
3864 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3865 params->seq_len, params->seq)) ||
3866 (params->cipher &&
3867 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3868 params->cipher)))
3869 goto nla_put_failure;
3870
3871 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3872 if (!key)
3873 goto nla_put_failure;
3874
3875 if ((params->key &&
3876 nla_put(cookie->msg, NL80211_KEY_DATA,
3877 params->key_len, params->key)) ||
3878 (params->seq &&
3879 nla_put(cookie->msg, NL80211_KEY_SEQ,
3880 params->seq_len, params->seq)) ||
3881 (params->cipher &&
3882 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3883 params->cipher)))
3884 goto nla_put_failure;
3885
3886 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3887 goto nla_put_failure;
3888
3889 nla_nest_end(cookie->msg, key);
3890
3891 return;
3892 nla_put_failure:
3893 cookie->error = 1;
3894 }
3895
3896 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3897 {
3898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3899 int err;
3900 struct net_device *dev = info->user_ptr[1];
3901 u8 key_idx = 0;
3902 const u8 *mac_addr = NULL;
3903 bool pairwise;
3904 struct get_key_cookie cookie = {
3905 .error = 0,
3906 };
3907 void *hdr;
3908 struct sk_buff *msg;
3909
3910 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3911 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3912 if (key_idx > 5 &&
3913 !wiphy_ext_feature_isset(
3914 &rdev->wiphy,
3915 NL80211_EXT_FEATURE_BEACON_PROTECTION))
3916 return -EINVAL;
3917 }
3918
3919 if (info->attrs[NL80211_ATTR_MAC])
3920 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3921
3922 pairwise = !!mac_addr;
3923 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3924 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3925
3926 if (kt != NL80211_KEYTYPE_GROUP &&
3927 kt != NL80211_KEYTYPE_PAIRWISE)
3928 return -EINVAL;
3929 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3930 }
3931
3932 if (!rdev->ops->get_key)
3933 return -EOPNOTSUPP;
3934
3935 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3936 return -ENOENT;
3937
3938 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3939 if (!msg)
3940 return -ENOMEM;
3941
3942 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3943 NL80211_CMD_NEW_KEY);
3944 if (!hdr)
3945 goto nla_put_failure;
3946
3947 cookie.msg = msg;
3948 cookie.idx = key_idx;
3949
3950 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3951 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3952 goto nla_put_failure;
3953 if (mac_addr &&
3954 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3955 goto nla_put_failure;
3956
3957 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3958 get_key_callback);
3959
3960 if (err)
3961 goto free_msg;
3962
3963 if (cookie.error)
3964 goto nla_put_failure;
3965
3966 genlmsg_end(msg, hdr);
3967 return genlmsg_reply(msg, info);
3968
3969 nla_put_failure:
3970 err = -ENOBUFS;
3971 free_msg:
3972 nlmsg_free(msg);
3973 return err;
3974 }
3975
3976 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3977 {
3978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3979 struct key_parse key;
3980 int err;
3981 struct net_device *dev = info->user_ptr[1];
3982
3983 err = nl80211_parse_key(info, &key);
3984 if (err)
3985 return err;
3986
3987 if (key.idx < 0)
3988 return -EINVAL;
3989
3990 /* Only support setting default key and
3991 * Extended Key ID action NL80211_KEY_SET_TX.
3992 */
3993 if (!key.def && !key.defmgmt && !key.defbeacon &&
3994 !(key.p.mode == NL80211_KEY_SET_TX))
3995 return -EINVAL;
3996
3997 wdev_lock(dev->ieee80211_ptr);
3998
3999 if (key.def) {
4000 if (!rdev->ops->set_default_key) {
4001 err = -EOPNOTSUPP;
4002 goto out;
4003 }
4004
4005 err = nl80211_key_allowed(dev->ieee80211_ptr);
4006 if (err)
4007 goto out;
4008
4009 err = rdev_set_default_key(rdev, dev, key.idx,
4010 key.def_uni, key.def_multi);
4011
4012 if (err)
4013 goto out;
4014
4015 #ifdef CONFIG_CFG80211_WEXT
4016 dev->ieee80211_ptr->wext.default_key = key.idx;
4017 #endif
4018 } else if (key.defmgmt) {
4019 if (key.def_uni || !key.def_multi) {
4020 err = -EINVAL;
4021 goto out;
4022 }
4023
4024 if (!rdev->ops->set_default_mgmt_key) {
4025 err = -EOPNOTSUPP;
4026 goto out;
4027 }
4028
4029 err = nl80211_key_allowed(dev->ieee80211_ptr);
4030 if (err)
4031 goto out;
4032
4033 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4034 if (err)
4035 goto out;
4036
4037 #ifdef CONFIG_CFG80211_WEXT
4038 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4039 #endif
4040 } else if (key.defbeacon) {
4041 if (key.def_uni || !key.def_multi) {
4042 err = -EINVAL;
4043 goto out;
4044 }
4045
4046 if (!rdev->ops->set_default_beacon_key) {
4047 err = -EOPNOTSUPP;
4048 goto out;
4049 }
4050
4051 err = nl80211_key_allowed(dev->ieee80211_ptr);
4052 if (err)
4053 goto out;
4054
4055 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4056 if (err)
4057 goto out;
4058 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4059 wiphy_ext_feature_isset(&rdev->wiphy,
4060 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4061 u8 *mac_addr = NULL;
4062
4063 if (info->attrs[NL80211_ATTR_MAC])
4064 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4065
4066 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4067 err = -EINVAL;
4068 goto out;
4069 }
4070
4071 err = rdev_add_key(rdev, dev, key.idx,
4072 NL80211_KEYTYPE_PAIRWISE,
4073 mac_addr, &key.p);
4074 } else {
4075 err = -EINVAL;
4076 }
4077 out:
4078 wdev_unlock(dev->ieee80211_ptr);
4079
4080 return err;
4081 }
4082
4083 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4084 {
4085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4086 int err;
4087 struct net_device *dev = info->user_ptr[1];
4088 struct key_parse key;
4089 const u8 *mac_addr = NULL;
4090
4091 err = nl80211_parse_key(info, &key);
4092 if (err)
4093 return err;
4094
4095 if (!key.p.key) {
4096 GENL_SET_ERR_MSG(info, "no key");
4097 return -EINVAL;
4098 }
4099
4100 if (info->attrs[NL80211_ATTR_MAC])
4101 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4102
4103 if (key.type == -1) {
4104 if (mac_addr)
4105 key.type = NL80211_KEYTYPE_PAIRWISE;
4106 else
4107 key.type = NL80211_KEYTYPE_GROUP;
4108 }
4109
4110 /* for now */
4111 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4112 key.type != NL80211_KEYTYPE_GROUP) {
4113 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4114 return -EINVAL;
4115 }
4116
4117 if (key.type == NL80211_KEYTYPE_GROUP &&
4118 info->attrs[NL80211_ATTR_VLAN_ID])
4119 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4120
4121 if (!rdev->ops->add_key)
4122 return -EOPNOTSUPP;
4123
4124 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4125 key.type == NL80211_KEYTYPE_PAIRWISE,
4126 mac_addr)) {
4127 GENL_SET_ERR_MSG(info, "key setting validation failed");
4128 return -EINVAL;
4129 }
4130
4131 wdev_lock(dev->ieee80211_ptr);
4132 err = nl80211_key_allowed(dev->ieee80211_ptr);
4133 if (err)
4134 GENL_SET_ERR_MSG(info, "key not allowed");
4135 if (!err) {
4136 err = rdev_add_key(rdev, dev, key.idx,
4137 key.type == NL80211_KEYTYPE_PAIRWISE,
4138 mac_addr, &key.p);
4139 if (err)
4140 GENL_SET_ERR_MSG(info, "key addition failed");
4141 }
4142 wdev_unlock(dev->ieee80211_ptr);
4143
4144 return err;
4145 }
4146
4147 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4148 {
4149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4150 int err;
4151 struct net_device *dev = info->user_ptr[1];
4152 u8 *mac_addr = NULL;
4153 struct key_parse key;
4154
4155 err = nl80211_parse_key(info, &key);
4156 if (err)
4157 return err;
4158
4159 if (info->attrs[NL80211_ATTR_MAC])
4160 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4161
4162 if (key.type == -1) {
4163 if (mac_addr)
4164 key.type = NL80211_KEYTYPE_PAIRWISE;
4165 else
4166 key.type = NL80211_KEYTYPE_GROUP;
4167 }
4168
4169 /* for now */
4170 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4171 key.type != NL80211_KEYTYPE_GROUP)
4172 return -EINVAL;
4173
4174 if (!rdev->ops->del_key)
4175 return -EOPNOTSUPP;
4176
4177 wdev_lock(dev->ieee80211_ptr);
4178 err = nl80211_key_allowed(dev->ieee80211_ptr);
4179
4180 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4181 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4182 err = -ENOENT;
4183
4184 if (!err)
4185 err = rdev_del_key(rdev, dev, key.idx,
4186 key.type == NL80211_KEYTYPE_PAIRWISE,
4187 mac_addr);
4188
4189 #ifdef CONFIG_CFG80211_WEXT
4190 if (!err) {
4191 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4192 dev->ieee80211_ptr->wext.default_key = -1;
4193 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4194 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4195 }
4196 #endif
4197 wdev_unlock(dev->ieee80211_ptr);
4198
4199 return err;
4200 }
4201
4202 /* This function returns an error or the number of nested attributes */
4203 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4204 {
4205 struct nlattr *attr;
4206 int n_entries = 0, tmp;
4207
4208 nla_for_each_nested(attr, nl_attr, tmp) {
4209 if (nla_len(attr) != ETH_ALEN)
4210 return -EINVAL;
4211
4212 n_entries++;
4213 }
4214
4215 return n_entries;
4216 }
4217
4218 /*
4219 * This function parses ACL information and allocates memory for ACL data.
4220 * On successful return, the calling function is responsible to free the
4221 * ACL buffer returned by this function.
4222 */
4223 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4224 struct genl_info *info)
4225 {
4226 enum nl80211_acl_policy acl_policy;
4227 struct nlattr *attr;
4228 struct cfg80211_acl_data *acl;
4229 int i = 0, n_entries, tmp;
4230
4231 if (!wiphy->max_acl_mac_addrs)
4232 return ERR_PTR(-EOPNOTSUPP);
4233
4234 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4235 return ERR_PTR(-EINVAL);
4236
4237 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4238 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4239 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4240 return ERR_PTR(-EINVAL);
4241
4242 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4243 return ERR_PTR(-EINVAL);
4244
4245 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4246 if (n_entries < 0)
4247 return ERR_PTR(n_entries);
4248
4249 if (n_entries > wiphy->max_acl_mac_addrs)
4250 return ERR_PTR(-ENOTSUPP);
4251
4252 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4253 if (!acl)
4254 return ERR_PTR(-ENOMEM);
4255
4256 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4257 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4258 i++;
4259 }
4260
4261 acl->n_acl_entries = n_entries;
4262 acl->acl_policy = acl_policy;
4263
4264 return acl;
4265 }
4266
4267 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4268 {
4269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4270 struct net_device *dev = info->user_ptr[1];
4271 struct cfg80211_acl_data *acl;
4272 int err;
4273
4274 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4276 return -EOPNOTSUPP;
4277
4278 if (!dev->ieee80211_ptr->beacon_interval)
4279 return -EINVAL;
4280
4281 acl = parse_acl_data(&rdev->wiphy, info);
4282 if (IS_ERR(acl))
4283 return PTR_ERR(acl);
4284
4285 err = rdev_set_mac_acl(rdev, dev, acl);
4286
4287 kfree(acl);
4288
4289 return err;
4290 }
4291
4292 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4293 u8 *rates, u8 rates_len)
4294 {
4295 u8 i;
4296 u32 mask = 0;
4297
4298 for (i = 0; i < rates_len; i++) {
4299 int rate = (rates[i] & 0x7f) * 5;
4300 int ridx;
4301
4302 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4303 struct ieee80211_rate *srate =
4304 &sband->bitrates[ridx];
4305 if (rate == srate->bitrate) {
4306 mask |= 1 << ridx;
4307 break;
4308 }
4309 }
4310 if (ridx == sband->n_bitrates)
4311 return 0; /* rate not found */
4312 }
4313
4314 return mask;
4315 }
4316
4317 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4318 u8 *rates, u8 rates_len,
4319 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4320 {
4321 u8 i;
4322
4323 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4324
4325 for (i = 0; i < rates_len; i++) {
4326 int ridx, rbit;
4327
4328 ridx = rates[i] / 8;
4329 rbit = BIT(rates[i] % 8);
4330
4331 /* check validity */
4332 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4333 return false;
4334
4335 /* check availability */
4336 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4337 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4338 mcs[ridx] |= rbit;
4339 else
4340 return false;
4341 }
4342
4343 return true;
4344 }
4345
4346 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4347 {
4348 u16 mcs_mask = 0;
4349
4350 switch (vht_mcs_map) {
4351 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4352 break;
4353 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4354 mcs_mask = 0x00FF;
4355 break;
4356 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4357 mcs_mask = 0x01FF;
4358 break;
4359 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4360 mcs_mask = 0x03FF;
4361 break;
4362 default:
4363 break;
4364 }
4365
4366 return mcs_mask;
4367 }
4368
4369 static void vht_build_mcs_mask(u16 vht_mcs_map,
4370 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4371 {
4372 u8 nss;
4373
4374 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4375 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4376 vht_mcs_map >>= 2;
4377 }
4378 }
4379
4380 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4381 struct nl80211_txrate_vht *txrate,
4382 u16 mcs[NL80211_VHT_NSS_MAX])
4383 {
4384 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4385 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4386 u8 i;
4387
4388 if (!sband->vht_cap.vht_supported)
4389 return false;
4390
4391 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4392
4393 /* Build vht_mcs_mask from VHT capabilities */
4394 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4395
4396 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4397 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4398 mcs[i] = txrate->mcs[i];
4399 else
4400 return false;
4401 }
4402
4403 return true;
4404 }
4405
4406 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4407 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4408 .len = NL80211_MAX_SUPP_RATES },
4409 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4410 .len = NL80211_MAX_SUPP_HT_RATES },
4411 [NL80211_TXRATE_VHT] = {
4412 .type = NLA_EXACT_LEN_WARN,
4413 .len = sizeof(struct nl80211_txrate_vht),
4414 },
4415 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4416 };
4417
4418 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4419 struct cfg80211_bitrate_mask *mask)
4420 {
4421 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4423 int rem, i;
4424 struct nlattr *tx_rates;
4425 struct ieee80211_supported_band *sband;
4426 u16 vht_tx_mcs_map;
4427
4428 memset(mask, 0, sizeof(*mask));
4429 /* Default to all rates enabled */
4430 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4431 sband = rdev->wiphy.bands[i];
4432
4433 if (!sband)
4434 continue;
4435
4436 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4437 memcpy(mask->control[i].ht_mcs,
4438 sband->ht_cap.mcs.rx_mask,
4439 sizeof(mask->control[i].ht_mcs));
4440
4441 if (!sband->vht_cap.vht_supported)
4442 continue;
4443
4444 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4445 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4446 }
4447
4448 /* if no rates are given set it back to the defaults */
4449 if (!info->attrs[NL80211_ATTR_TX_RATES])
4450 goto out;
4451
4452 /* The nested attribute uses enum nl80211_band as the index. This maps
4453 * directly to the enum nl80211_band values used in cfg80211.
4454 */
4455 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4456 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4457 enum nl80211_band band = nla_type(tx_rates);
4458 int err;
4459
4460 if (band < 0 || band >= NUM_NL80211_BANDS)
4461 return -EINVAL;
4462 sband = rdev->wiphy.bands[band];
4463 if (sband == NULL)
4464 return -EINVAL;
4465 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4466 tx_rates,
4467 nl80211_txattr_policy,
4468 info->extack);
4469 if (err)
4470 return err;
4471 if (tb[NL80211_TXRATE_LEGACY]) {
4472 mask->control[band].legacy = rateset_to_mask(
4473 sband,
4474 nla_data(tb[NL80211_TXRATE_LEGACY]),
4475 nla_len(tb[NL80211_TXRATE_LEGACY]));
4476 if ((mask->control[band].legacy == 0) &&
4477 nla_len(tb[NL80211_TXRATE_LEGACY]))
4478 return -EINVAL;
4479 }
4480 if (tb[NL80211_TXRATE_HT]) {
4481 if (!ht_rateset_to_mask(
4482 sband,
4483 nla_data(tb[NL80211_TXRATE_HT]),
4484 nla_len(tb[NL80211_TXRATE_HT]),
4485 mask->control[band].ht_mcs))
4486 return -EINVAL;
4487 }
4488 if (tb[NL80211_TXRATE_VHT]) {
4489 if (!vht_set_mcs_mask(
4490 sband,
4491 nla_data(tb[NL80211_TXRATE_VHT]),
4492 mask->control[band].vht_mcs))
4493 return -EINVAL;
4494 }
4495 if (tb[NL80211_TXRATE_GI]) {
4496 mask->control[band].gi =
4497 nla_get_u8(tb[NL80211_TXRATE_GI]);
4498 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4499 return -EINVAL;
4500 }
4501
4502 if (mask->control[band].legacy == 0) {
4503 /* don't allow empty legacy rates if HT or VHT
4504 * are not even supported.
4505 */
4506 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4507 rdev->wiphy.bands[band]->vht_cap.vht_supported))
4508 return -EINVAL;
4509
4510 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4511 if (mask->control[band].ht_mcs[i])
4512 goto out;
4513
4514 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4515 if (mask->control[band].vht_mcs[i])
4516 goto out;
4517
4518 /* legacy and mcs rates may not be both empty */
4519 return -EINVAL;
4520 }
4521 }
4522
4523 out:
4524 return 0;
4525 }
4526
4527 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4528 enum nl80211_band band,
4529 struct cfg80211_bitrate_mask *beacon_rate)
4530 {
4531 u32 count_ht, count_vht, i;
4532 u32 rate = beacon_rate->control[band].legacy;
4533
4534 /* Allow only one rate */
4535 if (hweight32(rate) > 1)
4536 return -EINVAL;
4537
4538 count_ht = 0;
4539 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4540 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4541 return -EINVAL;
4542 } else if (beacon_rate->control[band].ht_mcs[i]) {
4543 count_ht++;
4544 if (count_ht > 1)
4545 return -EINVAL;
4546 }
4547 if (count_ht && rate)
4548 return -EINVAL;
4549 }
4550
4551 count_vht = 0;
4552 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4553 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4554 return -EINVAL;
4555 } else if (beacon_rate->control[band].vht_mcs[i]) {
4556 count_vht++;
4557 if (count_vht > 1)
4558 return -EINVAL;
4559 }
4560 if (count_vht && rate)
4561 return -EINVAL;
4562 }
4563
4564 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4565 return -EINVAL;
4566
4567 if (rate &&
4568 !wiphy_ext_feature_isset(&rdev->wiphy,
4569 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4570 return -EINVAL;
4571 if (count_ht &&
4572 !wiphy_ext_feature_isset(&rdev->wiphy,
4573 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4574 return -EINVAL;
4575 if (count_vht &&
4576 !wiphy_ext_feature_isset(&rdev->wiphy,
4577 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4578 return -EINVAL;
4579
4580 return 0;
4581 }
4582
4583 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4584 struct nlattr *attrs[],
4585 struct cfg80211_beacon_data *bcn)
4586 {
4587 bool haveinfo = false;
4588 int err;
4589
4590 memset(bcn, 0, sizeof(*bcn));
4591
4592 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4593 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4594 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4595 if (!bcn->head_len)
4596 return -EINVAL;
4597 haveinfo = true;
4598 }
4599
4600 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4601 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4602 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4603 haveinfo = true;
4604 }
4605
4606 if (!haveinfo)
4607 return -EINVAL;
4608
4609 if (attrs[NL80211_ATTR_IE]) {
4610 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4611 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4612 }
4613
4614 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4615 bcn->proberesp_ies =
4616 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4617 bcn->proberesp_ies_len =
4618 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4619 }
4620
4621 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4622 bcn->assocresp_ies =
4623 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4624 bcn->assocresp_ies_len =
4625 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4626 }
4627
4628 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4629 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4630 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4631 }
4632
4633 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4634 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4635
4636 err = nla_parse_nested_deprecated(tb,
4637 NL80211_FTM_RESP_ATTR_MAX,
4638 attrs[NL80211_ATTR_FTM_RESPONDER],
4639 NULL, NULL);
4640 if (err)
4641 return err;
4642
4643 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4644 wiphy_ext_feature_isset(&rdev->wiphy,
4645 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4646 bcn->ftm_responder = 1;
4647 else
4648 return -EOPNOTSUPP;
4649
4650 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4651 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4652 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4653 }
4654
4655 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4656 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4657 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4658 }
4659 } else {
4660 bcn->ftm_responder = -1;
4661 }
4662
4663 return 0;
4664 }
4665
4666 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4667 struct ieee80211_he_obss_pd *he_obss_pd)
4668 {
4669 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4670 int err;
4671
4672 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4673 he_obss_pd_policy, NULL);
4674 if (err)
4675 return err;
4676
4677 if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4678 !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4679 return -EINVAL;
4680
4681 he_obss_pd->min_offset =
4682 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4683 he_obss_pd->max_offset =
4684 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4685
4686 if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4687 return -EINVAL;
4688
4689 he_obss_pd->enable = true;
4690
4691 return 0;
4692 }
4693
4694 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4695 struct cfg80211_he_bss_color *he_bss_color)
4696 {
4697 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4698 int err;
4699
4700 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4701 he_bss_color_policy, NULL);
4702 if (err)
4703 return err;
4704
4705 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4706 return -EINVAL;
4707
4708 he_bss_color->color =
4709 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4710 he_bss_color->disabled =
4711 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4712 he_bss_color->partial =
4713 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4714
4715 return 0;
4716 }
4717
4718 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4719 const u8 *rates)
4720 {
4721 int i;
4722
4723 if (!rates)
4724 return;
4725
4726 for (i = 0; i < rates[1]; i++) {
4727 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4728 params->ht_required = true;
4729 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4730 params->vht_required = true;
4731 }
4732 }
4733
4734 /*
4735 * Since the nl80211 API didn't include, from the beginning, attributes about
4736 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4737 * benefit of drivers that rebuild IEs in the firmware.
4738 */
4739 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4740 {
4741 const struct cfg80211_beacon_data *bcn = &params->beacon;
4742 size_t ies_len = bcn->tail_len;
4743 const u8 *ies = bcn->tail;
4744 const u8 *rates;
4745 const u8 *cap;
4746
4747 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4748 nl80211_check_ap_rate_selectors(params, rates);
4749
4750 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4751 nl80211_check_ap_rate_selectors(params, rates);
4752
4753 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4754 if (cap && cap[1] >= sizeof(*params->ht_cap))
4755 params->ht_cap = (void *)(cap + 2);
4756 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4757 if (cap && cap[1] >= sizeof(*params->vht_cap))
4758 params->vht_cap = (void *)(cap + 2);
4759 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4760 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4761 params->he_cap = (void *)(cap + 3);
4762 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4763 if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4764 params->he_oper = (void *)(cap + 3);
4765 }
4766
4767 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4768 struct cfg80211_ap_settings *params)
4769 {
4770 struct wireless_dev *wdev;
4771 bool ret = false;
4772
4773 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4774 if (wdev->iftype != NL80211_IFTYPE_AP &&
4775 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4776 continue;
4777
4778 if (!wdev->preset_chandef.chan)
4779 continue;
4780
4781 params->chandef = wdev->preset_chandef;
4782 ret = true;
4783 break;
4784 }
4785
4786 return ret;
4787 }
4788
4789 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4790 enum nl80211_auth_type auth_type,
4791 enum nl80211_commands cmd)
4792 {
4793 if (auth_type > NL80211_AUTHTYPE_MAX)
4794 return false;
4795
4796 switch (cmd) {
4797 case NL80211_CMD_AUTHENTICATE:
4798 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4799 auth_type == NL80211_AUTHTYPE_SAE)
4800 return false;
4801 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4802 NL80211_EXT_FEATURE_FILS_STA) &&
4803 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4804 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4805 auth_type == NL80211_AUTHTYPE_FILS_PK))
4806 return false;
4807 return true;
4808 case NL80211_CMD_CONNECT:
4809 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4810 !wiphy_ext_feature_isset(&rdev->wiphy,
4811 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4812 auth_type == NL80211_AUTHTYPE_SAE)
4813 return false;
4814
4815 /* FILS with SK PFS or PK not supported yet */
4816 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4817 auth_type == NL80211_AUTHTYPE_FILS_PK)
4818 return false;
4819 if (!wiphy_ext_feature_isset(
4820 &rdev->wiphy,
4821 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4822 auth_type == NL80211_AUTHTYPE_FILS_SK)
4823 return false;
4824 return true;
4825 case NL80211_CMD_START_AP:
4826 /* SAE not supported yet */
4827 if (auth_type == NL80211_AUTHTYPE_SAE)
4828 return false;
4829 /* FILS not supported yet */
4830 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4831 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4832 auth_type == NL80211_AUTHTYPE_FILS_PK)
4833 return false;
4834 return true;
4835 default:
4836 return false;
4837 }
4838 }
4839
4840 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4841 {
4842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4843 struct net_device *dev = info->user_ptr[1];
4844 struct wireless_dev *wdev = dev->ieee80211_ptr;
4845 struct cfg80211_ap_settings params;
4846 int err;
4847
4848 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4849 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4850 return -EOPNOTSUPP;
4851
4852 if (!rdev->ops->start_ap)
4853 return -EOPNOTSUPP;
4854
4855 if (wdev->beacon_interval)
4856 return -EALREADY;
4857
4858 memset(&params, 0, sizeof(params));
4859
4860 /* these are required for START_AP */
4861 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4862 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4863 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4864 return -EINVAL;
4865
4866 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4867 if (err)
4868 return err;
4869
4870 params.beacon_interval =
4871 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4872 params.dtim_period =
4873 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4874
4875 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4876 params.beacon_interval);
4877 if (err)
4878 return err;
4879
4880 /*
4881 * In theory, some of these attributes should be required here
4882 * but since they were not used when the command was originally
4883 * added, keep them optional for old user space programs to let
4884 * them continue to work with drivers that do not need the
4885 * additional information -- drivers must check!
4886 */
4887 if (info->attrs[NL80211_ATTR_SSID]) {
4888 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4889 params.ssid_len =
4890 nla_len(info->attrs[NL80211_ATTR_SSID]);
4891 if (params.ssid_len == 0 ||
4892 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4893 return -EINVAL;
4894 }
4895
4896 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4897 params.hidden_ssid = nla_get_u32(
4898 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4899
4900 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4901
4902 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4903 params.auth_type = nla_get_u32(
4904 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4905 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4906 NL80211_CMD_START_AP))
4907 return -EINVAL;
4908 } else
4909 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4910
4911 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4912 NL80211_MAX_NR_CIPHER_SUITES);
4913 if (err)
4914 return err;
4915
4916 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4917 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4918 return -EOPNOTSUPP;
4919 params.inactivity_timeout = nla_get_u16(
4920 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4921 }
4922
4923 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4924 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4925 return -EINVAL;
4926 params.p2p_ctwindow =
4927 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4928 if (params.p2p_ctwindow != 0 &&
4929 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4930 return -EINVAL;
4931 }
4932
4933 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4934 u8 tmp;
4935
4936 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4937 return -EINVAL;
4938 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4939 params.p2p_opp_ps = tmp;
4940 if (params.p2p_opp_ps != 0 &&
4941 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4942 return -EINVAL;
4943 }
4944
4945 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4946 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4947 if (err)
4948 return err;
4949 } else if (wdev->preset_chandef.chan) {
4950 params.chandef = wdev->preset_chandef;
4951 } else if (!nl80211_get_ap_channel(rdev, &params))
4952 return -EINVAL;
4953
4954 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4955 wdev->iftype))
4956 return -EINVAL;
4957
4958 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4959 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4960 if (err)
4961 return err;
4962
4963 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4964 &params.beacon_rate);
4965 if (err)
4966 return err;
4967 }
4968
4969 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4970 params.smps_mode =
4971 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4972 switch (params.smps_mode) {
4973 case NL80211_SMPS_OFF:
4974 break;
4975 case NL80211_SMPS_STATIC:
4976 if (!(rdev->wiphy.features &
4977 NL80211_FEATURE_STATIC_SMPS))
4978 return -EINVAL;
4979 break;
4980 case NL80211_SMPS_DYNAMIC:
4981 if (!(rdev->wiphy.features &
4982 NL80211_FEATURE_DYNAMIC_SMPS))
4983 return -EINVAL;
4984 break;
4985 default:
4986 return -EINVAL;
4987 }
4988 } else {
4989 params.smps_mode = NL80211_SMPS_OFF;
4990 }
4991
4992 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4993 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4994 return -EOPNOTSUPP;
4995
4996 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4997 params.acl = parse_acl_data(&rdev->wiphy, info);
4998 if (IS_ERR(params.acl))
4999 return PTR_ERR(params.acl);
5000 }
5001
5002 params.twt_responder =
5003 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5004
5005 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5006 err = nl80211_parse_he_obss_pd(
5007 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5008 &params.he_obss_pd);
5009 goto out;
5010 }
5011
5012 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5013 err = nl80211_parse_he_bss_color(
5014 info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5015 &params.he_bss_color);
5016 if (err)
5017 return err;
5018 }
5019
5020 nl80211_calculate_ap_params(&params);
5021
5022 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5023 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5024
5025 wdev_lock(wdev);
5026 err = rdev_start_ap(rdev, dev, &params);
5027 if (!err) {
5028 wdev->preset_chandef = params.chandef;
5029 wdev->beacon_interval = params.beacon_interval;
5030 wdev->chandef = params.chandef;
5031 wdev->ssid_len = params.ssid_len;
5032 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5033
5034 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5035 wdev->conn_owner_nlportid = info->snd_portid;
5036 }
5037 wdev_unlock(wdev);
5038
5039 out:
5040 kfree(params.acl);
5041
5042 return err;
5043 }
5044
5045 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5046 {
5047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5048 struct net_device *dev = info->user_ptr[1];
5049 struct wireless_dev *wdev = dev->ieee80211_ptr;
5050 struct cfg80211_beacon_data params;
5051 int err;
5052
5053 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5054 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5055 return -EOPNOTSUPP;
5056
5057 if (!rdev->ops->change_beacon)
5058 return -EOPNOTSUPP;
5059
5060 if (!wdev->beacon_interval)
5061 return -EINVAL;
5062
5063 err = nl80211_parse_beacon(rdev, info->attrs, &params);
5064 if (err)
5065 return err;
5066
5067 wdev_lock(wdev);
5068 err = rdev_change_beacon(rdev, dev, &params);
5069 wdev_unlock(wdev);
5070
5071 return err;
5072 }
5073
5074 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5075 {
5076 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5077 struct net_device *dev = info->user_ptr[1];
5078
5079 return cfg80211_stop_ap(rdev, dev, false);
5080 }
5081
5082 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5083 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5084 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5085 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5086 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5087 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5088 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5089 };
5090
5091 static int parse_station_flags(struct genl_info *info,
5092 enum nl80211_iftype iftype,
5093 struct station_parameters *params)
5094 {
5095 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5096 struct nlattr *nla;
5097 int flag;
5098
5099 /*
5100 * Try parsing the new attribute first so userspace
5101 * can specify both for older kernels.
5102 */
5103 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5104 if (nla) {
5105 struct nl80211_sta_flag_update *sta_flags;
5106
5107 sta_flags = nla_data(nla);
5108 params->sta_flags_mask = sta_flags->mask;
5109 params->sta_flags_set = sta_flags->set;
5110 params->sta_flags_set &= params->sta_flags_mask;
5111 if ((params->sta_flags_mask |
5112 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5113 return -EINVAL;
5114 return 0;
5115 }
5116
5117 /* if present, parse the old attribute */
5118
5119 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5120 if (!nla)
5121 return 0;
5122
5123 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5124 return -EINVAL;
5125
5126 /*
5127 * Only allow certain flags for interface types so that
5128 * other attributes are silently ignored. Remember that
5129 * this is backward compatibility code with old userspace
5130 * and shouldn't be hit in other cases anyway.
5131 */
5132 switch (iftype) {
5133 case NL80211_IFTYPE_AP:
5134 case NL80211_IFTYPE_AP_VLAN:
5135 case NL80211_IFTYPE_P2P_GO:
5136 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5137 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5138 BIT(NL80211_STA_FLAG_WME) |
5139 BIT(NL80211_STA_FLAG_MFP);
5140 break;
5141 case NL80211_IFTYPE_P2P_CLIENT:
5142 case NL80211_IFTYPE_STATION:
5143 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5144 BIT(NL80211_STA_FLAG_TDLS_PEER);
5145 break;
5146 case NL80211_IFTYPE_MESH_POINT:
5147 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5148 BIT(NL80211_STA_FLAG_MFP) |
5149 BIT(NL80211_STA_FLAG_AUTHORIZED);
5150 break;
5151 default:
5152 return -EINVAL;
5153 }
5154
5155 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5156 if (flags[flag]) {
5157 params->sta_flags_set |= (1<<flag);
5158
5159 /* no longer support new API additions in old API */
5160 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5161 return -EINVAL;
5162 }
5163 }
5164
5165 return 0;
5166 }
5167
5168 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5169 {
5170 struct nlattr *rate;
5171 u32 bitrate;
5172 u16 bitrate_compat;
5173 enum nl80211_rate_info rate_flg;
5174
5175 rate = nla_nest_start_noflag(msg, attr);
5176 if (!rate)
5177 return false;
5178
5179 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5180 bitrate = cfg80211_calculate_bitrate(info);
5181 /* report 16-bit bitrate only if we can */
5182 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5183 if (bitrate > 0 &&
5184 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5185 return false;
5186 if (bitrate_compat > 0 &&
5187 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5188 return false;
5189
5190 switch (info->bw) {
5191 case RATE_INFO_BW_5:
5192 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5193 break;
5194 case RATE_INFO_BW_10:
5195 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5196 break;
5197 default:
5198 WARN_ON(1);
5199 /* fall through */
5200 case RATE_INFO_BW_20:
5201 rate_flg = 0;
5202 break;
5203 case RATE_INFO_BW_40:
5204 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5205 break;
5206 case RATE_INFO_BW_80:
5207 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5208 break;
5209 case RATE_INFO_BW_160:
5210 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5211 break;
5212 case RATE_INFO_BW_HE_RU:
5213 rate_flg = 0;
5214 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5215 }
5216
5217 if (rate_flg && nla_put_flag(msg, rate_flg))
5218 return false;
5219
5220 if (info->flags & RATE_INFO_FLAGS_MCS) {
5221 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5222 return false;
5223 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5224 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5225 return false;
5226 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5227 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5228 return false;
5229 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5230 return false;
5231 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5232 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5233 return false;
5234 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5235 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5236 return false;
5237 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5238 return false;
5239 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5240 return false;
5241 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5242 return false;
5243 if (info->bw == RATE_INFO_BW_HE_RU &&
5244 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5245 info->he_ru_alloc))
5246 return false;
5247 }
5248
5249 nla_nest_end(msg, rate);
5250 return true;
5251 }
5252
5253 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5254 int id)
5255 {
5256 void *attr;
5257 int i = 0;
5258
5259 if (!mask)
5260 return true;
5261
5262 attr = nla_nest_start_noflag(msg, id);
5263 if (!attr)
5264 return false;
5265
5266 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5267 if (!(mask & BIT(i)))
5268 continue;
5269
5270 if (nla_put_u8(msg, i, signal[i]))
5271 return false;
5272 }
5273
5274 nla_nest_end(msg, attr);
5275
5276 return true;
5277 }
5278
5279 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5280 u32 seq, int flags,
5281 struct cfg80211_registered_device *rdev,
5282 struct net_device *dev,
5283 const u8 *mac_addr, struct station_info *sinfo)
5284 {
5285 void *hdr;
5286 struct nlattr *sinfoattr, *bss_param;
5287
5288 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5289 if (!hdr) {
5290 cfg80211_sinfo_release_content(sinfo);
5291 return -1;
5292 }
5293
5294 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5295 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5296 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5297 goto nla_put_failure;
5298
5299 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5300 if (!sinfoattr)
5301 goto nla_put_failure;
5302
5303 #define PUT_SINFO(attr, memb, type) do { \
5304 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5305 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5306 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5307 sinfo->memb)) \
5308 goto nla_put_failure; \
5309 } while (0)
5310 #define PUT_SINFO_U64(attr, memb) do { \
5311 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5312 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5313 sinfo->memb, NL80211_STA_INFO_PAD)) \
5314 goto nla_put_failure; \
5315 } while (0)
5316
5317 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5318 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5319 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5320
5321 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5322 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5323 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5324 (u32)sinfo->rx_bytes))
5325 goto nla_put_failure;
5326
5327 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5328 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5329 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5330 (u32)sinfo->tx_bytes))
5331 goto nla_put_failure;
5332
5333 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5334 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5335 PUT_SINFO(LLID, llid, u16);
5336 PUT_SINFO(PLID, plid, u16);
5337 PUT_SINFO(PLINK_STATE, plink_state, u8);
5338 PUT_SINFO_U64(RX_DURATION, rx_duration);
5339 PUT_SINFO_U64(TX_DURATION, tx_duration);
5340
5341 if (wiphy_ext_feature_isset(&rdev->wiphy,
5342 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5343 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5344
5345 switch (rdev->wiphy.signal_type) {
5346 case CFG80211_SIGNAL_TYPE_MBM:
5347 PUT_SINFO(SIGNAL, signal, u8);
5348 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5349 break;
5350 default:
5351 break;
5352 }
5353 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5354 if (!nl80211_put_signal(msg, sinfo->chains,
5355 sinfo->chain_signal,
5356 NL80211_STA_INFO_CHAIN_SIGNAL))
5357 goto nla_put_failure;
5358 }
5359 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5360 if (!nl80211_put_signal(msg, sinfo->chains,
5361 sinfo->chain_signal_avg,
5362 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5363 goto nla_put_failure;
5364 }
5365 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5366 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5367 NL80211_STA_INFO_TX_BITRATE))
5368 goto nla_put_failure;
5369 }
5370 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5371 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5372 NL80211_STA_INFO_RX_BITRATE))
5373 goto nla_put_failure;
5374 }
5375
5376 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5377 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5378 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5379 PUT_SINFO(TX_FAILED, tx_failed, u32);
5380 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5381 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5382 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5383 PUT_SINFO(LOCAL_PM, local_pm, u32);
5384 PUT_SINFO(PEER_PM, peer_pm, u32);
5385 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5386 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5387
5388 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5389 bss_param = nla_nest_start_noflag(msg,
5390 NL80211_STA_INFO_BSS_PARAM);
5391 if (!bss_param)
5392 goto nla_put_failure;
5393
5394 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5395 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5396 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5397 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5398 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5399 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5400 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5401 sinfo->bss_param.dtim_period) ||
5402 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5403 sinfo->bss_param.beacon_interval))
5404 goto nla_put_failure;
5405
5406 nla_nest_end(msg, bss_param);
5407 }
5408 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5409 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5410 sizeof(struct nl80211_sta_flag_update),
5411 &sinfo->sta_flags))
5412 goto nla_put_failure;
5413
5414 PUT_SINFO_U64(T_OFFSET, t_offset);
5415 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5416 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5417 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5418 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5419 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5420 if (wiphy_ext_feature_isset(&rdev->wiphy,
5421 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5422 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5423 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5424 }
5425
5426 #undef PUT_SINFO
5427 #undef PUT_SINFO_U64
5428
5429 if (sinfo->pertid) {
5430 struct nlattr *tidsattr;
5431 int tid;
5432
5433 tidsattr = nla_nest_start_noflag(msg,
5434 NL80211_STA_INFO_TID_STATS);
5435 if (!tidsattr)
5436 goto nla_put_failure;
5437
5438 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5439 struct cfg80211_tid_stats *tidstats;
5440 struct nlattr *tidattr;
5441
5442 tidstats = &sinfo->pertid[tid];
5443
5444 if (!tidstats->filled)
5445 continue;
5446
5447 tidattr = nla_nest_start_noflag(msg, tid + 1);
5448 if (!tidattr)
5449 goto nla_put_failure;
5450
5451 #define PUT_TIDVAL_U64(attr, memb) do { \
5452 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5453 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5454 tidstats->memb, NL80211_TID_STATS_PAD)) \
5455 goto nla_put_failure; \
5456 } while (0)
5457
5458 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5459 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5460 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5461 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5462
5463 #undef PUT_TIDVAL_U64
5464 if ((tidstats->filled &
5465 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5466 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5467 NL80211_TID_STATS_TXQ_STATS))
5468 goto nla_put_failure;
5469
5470 nla_nest_end(msg, tidattr);
5471 }
5472
5473 nla_nest_end(msg, tidsattr);
5474 }
5475
5476 nla_nest_end(msg, sinfoattr);
5477
5478 if (sinfo->assoc_req_ies_len &&
5479 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5480 sinfo->assoc_req_ies))
5481 goto nla_put_failure;
5482
5483 cfg80211_sinfo_release_content(sinfo);
5484 genlmsg_end(msg, hdr);
5485 return 0;
5486
5487 nla_put_failure:
5488 cfg80211_sinfo_release_content(sinfo);
5489 genlmsg_cancel(msg, hdr);
5490 return -EMSGSIZE;
5491 }
5492
5493 static int nl80211_dump_station(struct sk_buff *skb,
5494 struct netlink_callback *cb)
5495 {
5496 struct station_info sinfo;
5497 struct cfg80211_registered_device *rdev;
5498 struct wireless_dev *wdev;
5499 u8 mac_addr[ETH_ALEN];
5500 int sta_idx = cb->args[2];
5501 int err;
5502
5503 rtnl_lock();
5504 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5505 if (err)
5506 goto out_err;
5507
5508 if (!wdev->netdev) {
5509 err = -EINVAL;
5510 goto out_err;
5511 }
5512
5513 if (!rdev->ops->dump_station) {
5514 err = -EOPNOTSUPP;
5515 goto out_err;
5516 }
5517
5518 while (1) {
5519 memset(&sinfo, 0, sizeof(sinfo));
5520 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5521 mac_addr, &sinfo);
5522 if (err == -ENOENT)
5523 break;
5524 if (err)
5525 goto out_err;
5526
5527 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5528 NETLINK_CB(cb->skb).portid,
5529 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5530 rdev, wdev->netdev, mac_addr,
5531 &sinfo) < 0)
5532 goto out;
5533
5534 sta_idx++;
5535 }
5536
5537 out:
5538 cb->args[2] = sta_idx;
5539 err = skb->len;
5540 out_err:
5541 rtnl_unlock();
5542
5543 return err;
5544 }
5545
5546 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5547 {
5548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5549 struct net_device *dev = info->user_ptr[1];
5550 struct station_info sinfo;
5551 struct sk_buff *msg;
5552 u8 *mac_addr = NULL;
5553 int err;
5554
5555 memset(&sinfo, 0, sizeof(sinfo));
5556
5557 if (!info->attrs[NL80211_ATTR_MAC])
5558 return -EINVAL;
5559
5560 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5561
5562 if (!rdev->ops->get_station)
5563 return -EOPNOTSUPP;
5564
5565 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5566 if (err)
5567 return err;
5568
5569 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5570 if (!msg) {
5571 cfg80211_sinfo_release_content(&sinfo);
5572 return -ENOMEM;
5573 }
5574
5575 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5576 info->snd_portid, info->snd_seq, 0,
5577 rdev, dev, mac_addr, &sinfo) < 0) {
5578 nlmsg_free(msg);
5579 return -ENOBUFS;
5580 }
5581
5582 return genlmsg_reply(msg, info);
5583 }
5584
5585 int cfg80211_check_station_change(struct wiphy *wiphy,
5586 struct station_parameters *params,
5587 enum cfg80211_station_type statype)
5588 {
5589 if (params->listen_interval != -1 &&
5590 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5591 return -EINVAL;
5592
5593 if (params->support_p2p_ps != -1 &&
5594 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5595 return -EINVAL;
5596
5597 if (params->aid &&
5598 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5599 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5600 return -EINVAL;
5601
5602 /* When you run into this, adjust the code below for the new flag */
5603 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5604
5605 switch (statype) {
5606 case CFG80211_STA_MESH_PEER_KERNEL:
5607 case CFG80211_STA_MESH_PEER_USER:
5608 /*
5609 * No ignoring the TDLS flag here -- the userspace mesh
5610 * code doesn't have the bug of including TDLS in the
5611 * mask everywhere.
5612 */
5613 if (params->sta_flags_mask &
5614 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5615 BIT(NL80211_STA_FLAG_MFP) |
5616 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5617 return -EINVAL;
5618 break;
5619 case CFG80211_STA_TDLS_PEER_SETUP:
5620 case CFG80211_STA_TDLS_PEER_ACTIVE:
5621 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5622 return -EINVAL;
5623 /* ignore since it can't change */
5624 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5625 break;
5626 default:
5627 /* disallow mesh-specific things */
5628 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5629 return -EINVAL;
5630 if (params->local_pm)
5631 return -EINVAL;
5632 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5633 return -EINVAL;
5634 }
5635
5636 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5637 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5638 /* TDLS can't be set, ... */
5639 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5640 return -EINVAL;
5641 /*
5642 * ... but don't bother the driver with it. This works around
5643 * a hostapd/wpa_supplicant issue -- it always includes the
5644 * TLDS_PEER flag in the mask even for AP mode.
5645 */
5646 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5647 }
5648
5649 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5650 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5651 /* reject other things that can't change */
5652 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5653 return -EINVAL;
5654 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5655 return -EINVAL;
5656 if (params->supported_rates)
5657 return -EINVAL;
5658 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5659 params->he_capa)
5660 return -EINVAL;
5661 }
5662
5663 if (statype != CFG80211_STA_AP_CLIENT &&
5664 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5665 if (params->vlan)
5666 return -EINVAL;
5667 }
5668
5669 switch (statype) {
5670 case CFG80211_STA_AP_MLME_CLIENT:
5671 /* Use this only for authorizing/unauthorizing a station */
5672 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5673 return -EOPNOTSUPP;
5674 break;
5675 case CFG80211_STA_AP_CLIENT:
5676 case CFG80211_STA_AP_CLIENT_UNASSOC:
5677 /* accept only the listed bits */
5678 if (params->sta_flags_mask &
5679 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5680 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5681 BIT(NL80211_STA_FLAG_ASSOCIATED) |
5682 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5683 BIT(NL80211_STA_FLAG_WME) |
5684 BIT(NL80211_STA_FLAG_MFP)))
5685 return -EINVAL;
5686
5687 /* but authenticated/associated only if driver handles it */
5688 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5689 params->sta_flags_mask &
5690 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5691 BIT(NL80211_STA_FLAG_ASSOCIATED)))
5692 return -EINVAL;
5693 break;
5694 case CFG80211_STA_IBSS:
5695 case CFG80211_STA_AP_STA:
5696 /* reject any changes other than AUTHORIZED */
5697 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5698 return -EINVAL;
5699 break;
5700 case CFG80211_STA_TDLS_PEER_SETUP:
5701 /* reject any changes other than AUTHORIZED or WME */
5702 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5703 BIT(NL80211_STA_FLAG_WME)))
5704 return -EINVAL;
5705 /* force (at least) rates when authorizing */
5706 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5707 !params->supported_rates)
5708 return -EINVAL;
5709 break;
5710 case CFG80211_STA_TDLS_PEER_ACTIVE:
5711 /* reject any changes */
5712 return -EINVAL;
5713 case CFG80211_STA_MESH_PEER_KERNEL:
5714 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5715 return -EINVAL;
5716 break;
5717 case CFG80211_STA_MESH_PEER_USER:
5718 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5719 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5720 return -EINVAL;
5721 break;
5722 }
5723
5724 /*
5725 * Older kernel versions ignored this attribute entirely, so don't
5726 * reject attempts to update it but mark it as unused instead so the
5727 * driver won't look at the data.
5728 */
5729 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5730 statype != CFG80211_STA_TDLS_PEER_SETUP)
5731 params->opmode_notif_used = false;
5732
5733 return 0;
5734 }
5735 EXPORT_SYMBOL(cfg80211_check_station_change);
5736
5737 /*
5738 * Get vlan interface making sure it is running and on the right wiphy.
5739 */
5740 static struct net_device *get_vlan(struct genl_info *info,
5741 struct cfg80211_registered_device *rdev)
5742 {
5743 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5744 struct net_device *v;
5745 int ret;
5746
5747 if (!vlanattr)
5748 return NULL;
5749
5750 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5751 if (!v)
5752 return ERR_PTR(-ENODEV);
5753
5754 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5755 ret = -EINVAL;
5756 goto error;
5757 }
5758
5759 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5760 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5761 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5762 ret = -EINVAL;
5763 goto error;
5764 }
5765
5766 if (!netif_running(v)) {
5767 ret = -ENETDOWN;
5768 goto error;
5769 }
5770
5771 return v;
5772 error:
5773 dev_put(v);
5774 return ERR_PTR(ret);
5775 }
5776
5777 static const struct nla_policy
5778 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5779 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5780 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5781 };
5782
5783 static int nl80211_parse_sta_wme(struct genl_info *info,
5784 struct station_parameters *params)
5785 {
5786 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5787 struct nlattr *nla;
5788 int err;
5789
5790 /* parse WME attributes if present */
5791 if (!info->attrs[NL80211_ATTR_STA_WME])
5792 return 0;
5793
5794 nla = info->attrs[NL80211_ATTR_STA_WME];
5795 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5796 nl80211_sta_wme_policy,
5797 info->extack);
5798 if (err)
5799 return err;
5800
5801 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5802 params->uapsd_queues = nla_get_u8(
5803 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5804 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5805 return -EINVAL;
5806
5807 if (tb[NL80211_STA_WME_MAX_SP])
5808 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5809
5810 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5811 return -EINVAL;
5812
5813 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5814
5815 return 0;
5816 }
5817
5818 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5819 struct station_parameters *params)
5820 {
5821 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5822 params->supported_channels =
5823 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5824 params->supported_channels_len =
5825 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5826 /*
5827 * Need to include at least one (first channel, number of
5828 * channels) tuple for each subband, and must have proper
5829 * tuples for the rest of the data as well.
5830 */
5831 if (params->supported_channels_len < 2)
5832 return -EINVAL;
5833 if (params->supported_channels_len % 2)
5834 return -EINVAL;
5835 }
5836
5837 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5838 params->supported_oper_classes =
5839 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5840 params->supported_oper_classes_len =
5841 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5842 /*
5843 * The value of the Length field of the Supported Operating
5844 * Classes element is between 2 and 253.
5845 */
5846 if (params->supported_oper_classes_len < 2 ||
5847 params->supported_oper_classes_len > 253)
5848 return -EINVAL;
5849 }
5850 return 0;
5851 }
5852
5853 static int nl80211_set_station_tdls(struct genl_info *info,
5854 struct station_parameters *params)
5855 {
5856 int err;
5857 /* Dummy STA entry gets updated once the peer capabilities are known */
5858 if (info->attrs[NL80211_ATTR_PEER_AID])
5859 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5860 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5861 params->ht_capa =
5862 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5863 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5864 params->vht_capa =
5865 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5866 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5867 params->he_capa =
5868 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5869 params->he_capa_len =
5870 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5871
5872 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5873 return -EINVAL;
5874 }
5875
5876 err = nl80211_parse_sta_channel_info(info, params);
5877 if (err)
5878 return err;
5879
5880 return nl80211_parse_sta_wme(info, params);
5881 }
5882
5883 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5884 struct station_parameters *params)
5885 {
5886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5887 int idx;
5888
5889 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5890 if (!rdev->ops->set_tx_power ||
5891 !wiphy_ext_feature_isset(&rdev->wiphy,
5892 NL80211_EXT_FEATURE_STA_TX_PWR))
5893 return -EOPNOTSUPP;
5894
5895 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5896 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5897
5898 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5899 idx = NL80211_ATTR_STA_TX_POWER;
5900
5901 if (info->attrs[idx])
5902 params->txpwr.power =
5903 nla_get_s16(info->attrs[idx]);
5904 else
5905 return -EINVAL;
5906 }
5907 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5908 }
5909
5910 return 0;
5911 }
5912
5913 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5914 {
5915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5916 struct net_device *dev = info->user_ptr[1];
5917 struct station_parameters params;
5918 u8 *mac_addr;
5919 int err;
5920
5921 memset(&params, 0, sizeof(params));
5922
5923 if (!rdev->ops->change_station)
5924 return -EOPNOTSUPP;
5925
5926 /*
5927 * AID and listen_interval properties can be set only for unassociated
5928 * station. Include these parameters here and will check them in
5929 * cfg80211_check_station_change().
5930 */
5931 if (info->attrs[NL80211_ATTR_STA_AID])
5932 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5933
5934 if (info->attrs[NL80211_ATTR_VLAN_ID])
5935 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5936
5937 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5938 params.listen_interval =
5939 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5940 else
5941 params.listen_interval = -1;
5942
5943 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5944 params.support_p2p_ps =
5945 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5946 else
5947 params.support_p2p_ps = -1;
5948
5949 if (!info->attrs[NL80211_ATTR_MAC])
5950 return -EINVAL;
5951
5952 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5953
5954 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5955 params.supported_rates =
5956 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5957 params.supported_rates_len =
5958 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5959 }
5960
5961 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5962 params.capability =
5963 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5964 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5965 }
5966
5967 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5968 params.ext_capab =
5969 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5970 params.ext_capab_len =
5971 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5972 }
5973
5974 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5975 return -EINVAL;
5976
5977 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5978 params.plink_action =
5979 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5980
5981 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5982 params.plink_state =
5983 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5984 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5985 params.peer_aid = nla_get_u16(
5986 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5987 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5988 }
5989
5990 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5991 params.local_pm = nla_get_u32(
5992 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5993
5994 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5995 params.opmode_notif_used = true;
5996 params.opmode_notif =
5997 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5998 }
5999
6000 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6001 params.airtime_weight =
6002 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6003
6004 if (params.airtime_weight &&
6005 !wiphy_ext_feature_isset(&rdev->wiphy,
6006 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6007 return -EOPNOTSUPP;
6008
6009 err = nl80211_parse_sta_txpower_setting(info, &params);
6010 if (err)
6011 return err;
6012
6013 /* Include parameters for TDLS peer (will check later) */
6014 err = nl80211_set_station_tdls(info, &params);
6015 if (err)
6016 return err;
6017
6018 params.vlan = get_vlan(info, rdev);
6019 if (IS_ERR(params.vlan))
6020 return PTR_ERR(params.vlan);
6021
6022 switch (dev->ieee80211_ptr->iftype) {
6023 case NL80211_IFTYPE_AP:
6024 case NL80211_IFTYPE_AP_VLAN:
6025 case NL80211_IFTYPE_P2P_GO:
6026 case NL80211_IFTYPE_P2P_CLIENT:
6027 case NL80211_IFTYPE_STATION:
6028 case NL80211_IFTYPE_ADHOC:
6029 case NL80211_IFTYPE_MESH_POINT:
6030 break;
6031 default:
6032 err = -EOPNOTSUPP;
6033 goto out_put_vlan;
6034 }
6035
6036 /* driver will call cfg80211_check_station_change() */
6037 err = rdev_change_station(rdev, dev, mac_addr, &params);
6038
6039 out_put_vlan:
6040 if (params.vlan)
6041 dev_put(params.vlan);
6042
6043 return err;
6044 }
6045
6046 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6047 {
6048 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6049 int err;
6050 struct net_device *dev = info->user_ptr[1];
6051 struct station_parameters params;
6052 u8 *mac_addr = NULL;
6053 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6054 BIT(NL80211_STA_FLAG_ASSOCIATED);
6055
6056 memset(&params, 0, sizeof(params));
6057
6058 if (!rdev->ops->add_station)
6059 return -EOPNOTSUPP;
6060
6061 if (!info->attrs[NL80211_ATTR_MAC])
6062 return -EINVAL;
6063
6064 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6065 return -EINVAL;
6066
6067 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6068 return -EINVAL;
6069
6070 if (!info->attrs[NL80211_ATTR_STA_AID] &&
6071 !info->attrs[NL80211_ATTR_PEER_AID])
6072 return -EINVAL;
6073
6074 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6075 params.supported_rates =
6076 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6077 params.supported_rates_len =
6078 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6079 params.listen_interval =
6080 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6081
6082 if (info->attrs[NL80211_ATTR_VLAN_ID])
6083 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6084
6085 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6086 params.support_p2p_ps =
6087 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6088 } else {
6089 /*
6090 * if not specified, assume it's supported for P2P GO interface,
6091 * and is NOT supported for AP interface
6092 */
6093 params.support_p2p_ps =
6094 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6095 }
6096
6097 if (info->attrs[NL80211_ATTR_PEER_AID])
6098 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6099 else
6100 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6101
6102 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6103 params.capability =
6104 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6105 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6106 }
6107
6108 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6109 params.ext_capab =
6110 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6111 params.ext_capab_len =
6112 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6113 }
6114
6115 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6116 params.ht_capa =
6117 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6118
6119 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6120 params.vht_capa =
6121 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6122
6123 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6124 params.he_capa =
6125 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6126 params.he_capa_len =
6127 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6128
6129 /* max len is validated in nla policy */
6130 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6131 return -EINVAL;
6132 }
6133
6134 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6135 params.opmode_notif_used = true;
6136 params.opmode_notif =
6137 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6138 }
6139
6140 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6141 params.plink_action =
6142 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6143
6144 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6145 params.airtime_weight =
6146 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6147
6148 if (params.airtime_weight &&
6149 !wiphy_ext_feature_isset(&rdev->wiphy,
6150 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6151 return -EOPNOTSUPP;
6152
6153 err = nl80211_parse_sta_txpower_setting(info, &params);
6154 if (err)
6155 return err;
6156
6157 err = nl80211_parse_sta_channel_info(info, &params);
6158 if (err)
6159 return err;
6160
6161 err = nl80211_parse_sta_wme(info, &params);
6162 if (err)
6163 return err;
6164
6165 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6166 return -EINVAL;
6167
6168 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6169 * as userspace might just pass through the capabilities from the IEs
6170 * directly, rather than enforcing this restriction and returning an
6171 * error in this case.
6172 */
6173 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6174 params.ht_capa = NULL;
6175 params.vht_capa = NULL;
6176
6177 /* HE requires WME */
6178 if (params.he_capa_len)
6179 return -EINVAL;
6180 }
6181
6182 /* When you run into this, adjust the code below for the new flag */
6183 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6184
6185 switch (dev->ieee80211_ptr->iftype) {
6186 case NL80211_IFTYPE_AP:
6187 case NL80211_IFTYPE_AP_VLAN:
6188 case NL80211_IFTYPE_P2P_GO:
6189 /* ignore WME attributes if iface/sta is not capable */
6190 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6191 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6192 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6193
6194 /* TDLS peers cannot be added */
6195 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6196 info->attrs[NL80211_ATTR_PEER_AID])
6197 return -EINVAL;
6198 /* but don't bother the driver with it */
6199 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6200
6201 /* allow authenticated/associated only if driver handles it */
6202 if (!(rdev->wiphy.features &
6203 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6204 params.sta_flags_mask & auth_assoc)
6205 return -EINVAL;
6206
6207 /* Older userspace, or userspace wanting to be compatible with
6208 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6209 * and assoc flags in the mask, but assumes the station will be
6210 * added as associated anyway since this was the required driver
6211 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6212 * introduced.
6213 * In order to not bother drivers with this quirk in the API
6214 * set the flags in both the mask and set for new stations in
6215 * this case.
6216 */
6217 if (!(params.sta_flags_mask & auth_assoc)) {
6218 params.sta_flags_mask |= auth_assoc;
6219 params.sta_flags_set |= auth_assoc;
6220 }
6221
6222 /* must be last in here for error handling */
6223 params.vlan = get_vlan(info, rdev);
6224 if (IS_ERR(params.vlan))
6225 return PTR_ERR(params.vlan);
6226 break;
6227 case NL80211_IFTYPE_MESH_POINT:
6228 /* ignore uAPSD data */
6229 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6230
6231 /* associated is disallowed */
6232 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6233 return -EINVAL;
6234 /* TDLS peers cannot be added */
6235 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6236 info->attrs[NL80211_ATTR_PEER_AID])
6237 return -EINVAL;
6238 break;
6239 case NL80211_IFTYPE_STATION:
6240 case NL80211_IFTYPE_P2P_CLIENT:
6241 /* ignore uAPSD data */
6242 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6243
6244 /* these are disallowed */
6245 if (params.sta_flags_mask &
6246 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6247 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6248 return -EINVAL;
6249 /* Only TDLS peers can be added */
6250 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6251 return -EINVAL;
6252 /* Can only add if TDLS ... */
6253 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6254 return -EOPNOTSUPP;
6255 /* ... with external setup is supported */
6256 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6257 return -EOPNOTSUPP;
6258 /*
6259 * Older wpa_supplicant versions always mark the TDLS peer
6260 * as authorized, but it shouldn't yet be.
6261 */
6262 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6263 break;
6264 default:
6265 return -EOPNOTSUPP;
6266 }
6267
6268 /* be aware of params.vlan when changing code here */
6269
6270 err = rdev_add_station(rdev, dev, mac_addr, &params);
6271
6272 if (params.vlan)
6273 dev_put(params.vlan);
6274 return err;
6275 }
6276
6277 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6278 {
6279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6280 struct net_device *dev = info->user_ptr[1];
6281 struct station_del_parameters params;
6282
6283 memset(&params, 0, sizeof(params));
6284
6285 if (info->attrs[NL80211_ATTR_MAC])
6286 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6287
6288 switch (dev->ieee80211_ptr->iftype) {
6289 case NL80211_IFTYPE_AP:
6290 case NL80211_IFTYPE_AP_VLAN:
6291 case NL80211_IFTYPE_MESH_POINT:
6292 case NL80211_IFTYPE_P2P_GO:
6293 /* always accept these */
6294 break;
6295 case NL80211_IFTYPE_ADHOC:
6296 /* conditionally accept */
6297 if (wiphy_ext_feature_isset(&rdev->wiphy,
6298 NL80211_EXT_FEATURE_DEL_IBSS_STA))
6299 break;
6300 return -EINVAL;
6301 default:
6302 return -EINVAL;
6303 }
6304
6305 if (!rdev->ops->del_station)
6306 return -EOPNOTSUPP;
6307
6308 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6309 params.subtype =
6310 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6311 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6312 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6313 return -EINVAL;
6314 } else {
6315 /* Default to Deauthentication frame */
6316 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6317 }
6318
6319 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6320 params.reason_code =
6321 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6322 if (params.reason_code == 0)
6323 return -EINVAL; /* 0 is reserved */
6324 } else {
6325 /* Default to reason code 2 */
6326 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6327 }
6328
6329 return rdev_del_station(rdev, dev, &params);
6330 }
6331
6332 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6333 int flags, struct net_device *dev,
6334 u8 *dst, u8 *next_hop,
6335 struct mpath_info *pinfo)
6336 {
6337 void *hdr;
6338 struct nlattr *pinfoattr;
6339
6340 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6341 if (!hdr)
6342 return -1;
6343
6344 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6345 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6346 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6347 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6348 goto nla_put_failure;
6349
6350 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6351 if (!pinfoattr)
6352 goto nla_put_failure;
6353 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6354 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6355 pinfo->frame_qlen))
6356 goto nla_put_failure;
6357 if (((pinfo->filled & MPATH_INFO_SN) &&
6358 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6359 ((pinfo->filled & MPATH_INFO_METRIC) &&
6360 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6361 pinfo->metric)) ||
6362 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6363 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6364 pinfo->exptime)) ||
6365 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6366 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6367 pinfo->flags)) ||
6368 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6369 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6370 pinfo->discovery_timeout)) ||
6371 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6372 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6373 pinfo->discovery_retries)) ||
6374 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6375 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6376 pinfo->hop_count)) ||
6377 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6378 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6379 pinfo->path_change_count)))
6380 goto nla_put_failure;
6381
6382 nla_nest_end(msg, pinfoattr);
6383
6384 genlmsg_end(msg, hdr);
6385 return 0;
6386
6387 nla_put_failure:
6388 genlmsg_cancel(msg, hdr);
6389 return -EMSGSIZE;
6390 }
6391
6392 static int nl80211_dump_mpath(struct sk_buff *skb,
6393 struct netlink_callback *cb)
6394 {
6395 struct mpath_info pinfo;
6396 struct cfg80211_registered_device *rdev;
6397 struct wireless_dev *wdev;
6398 u8 dst[ETH_ALEN];
6399 u8 next_hop[ETH_ALEN];
6400 int path_idx = cb->args[2];
6401 int err;
6402
6403 rtnl_lock();
6404 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6405 if (err)
6406 goto out_err;
6407
6408 if (!rdev->ops->dump_mpath) {
6409 err = -EOPNOTSUPP;
6410 goto out_err;
6411 }
6412
6413 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6414 err = -EOPNOTSUPP;
6415 goto out_err;
6416 }
6417
6418 while (1) {
6419 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6420 next_hop, &pinfo);
6421 if (err == -ENOENT)
6422 break;
6423 if (err)
6424 goto out_err;
6425
6426 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6427 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6428 wdev->netdev, dst, next_hop,
6429 &pinfo) < 0)
6430 goto out;
6431
6432 path_idx++;
6433 }
6434
6435 out:
6436 cb->args[2] = path_idx;
6437 err = skb->len;
6438 out_err:
6439 rtnl_unlock();
6440 return err;
6441 }
6442
6443 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6444 {
6445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6446 int err;
6447 struct net_device *dev = info->user_ptr[1];
6448 struct mpath_info pinfo;
6449 struct sk_buff *msg;
6450 u8 *dst = NULL;
6451 u8 next_hop[ETH_ALEN];
6452
6453 memset(&pinfo, 0, sizeof(pinfo));
6454
6455 if (!info->attrs[NL80211_ATTR_MAC])
6456 return -EINVAL;
6457
6458 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6459
6460 if (!rdev->ops->get_mpath)
6461 return -EOPNOTSUPP;
6462
6463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6464 return -EOPNOTSUPP;
6465
6466 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6467 if (err)
6468 return err;
6469
6470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6471 if (!msg)
6472 return -ENOMEM;
6473
6474 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6475 dev, dst, next_hop, &pinfo) < 0) {
6476 nlmsg_free(msg);
6477 return -ENOBUFS;
6478 }
6479
6480 return genlmsg_reply(msg, info);
6481 }
6482
6483 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6484 {
6485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6486 struct net_device *dev = info->user_ptr[1];
6487 u8 *dst = NULL;
6488 u8 *next_hop = NULL;
6489
6490 if (!info->attrs[NL80211_ATTR_MAC])
6491 return -EINVAL;
6492
6493 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6494 return -EINVAL;
6495
6496 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6497 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6498
6499 if (!rdev->ops->change_mpath)
6500 return -EOPNOTSUPP;
6501
6502 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6503 return -EOPNOTSUPP;
6504
6505 return rdev_change_mpath(rdev, dev, dst, next_hop);
6506 }
6507
6508 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6509 {
6510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6511 struct net_device *dev = info->user_ptr[1];
6512 u8 *dst = NULL;
6513 u8 *next_hop = NULL;
6514
6515 if (!info->attrs[NL80211_ATTR_MAC])
6516 return -EINVAL;
6517
6518 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6519 return -EINVAL;
6520
6521 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6522 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6523
6524 if (!rdev->ops->add_mpath)
6525 return -EOPNOTSUPP;
6526
6527 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6528 return -EOPNOTSUPP;
6529
6530 return rdev_add_mpath(rdev, dev, dst, next_hop);
6531 }
6532
6533 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6534 {
6535 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6536 struct net_device *dev = info->user_ptr[1];
6537 u8 *dst = NULL;
6538
6539 if (info->attrs[NL80211_ATTR_MAC])
6540 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6541
6542 if (!rdev->ops->del_mpath)
6543 return -EOPNOTSUPP;
6544
6545 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6546 return -EOPNOTSUPP;
6547
6548 return rdev_del_mpath(rdev, dev, dst);
6549 }
6550
6551 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6552 {
6553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6554 int err;
6555 struct net_device *dev = info->user_ptr[1];
6556 struct mpath_info pinfo;
6557 struct sk_buff *msg;
6558 u8 *dst = NULL;
6559 u8 mpp[ETH_ALEN];
6560
6561 memset(&pinfo, 0, sizeof(pinfo));
6562
6563 if (!info->attrs[NL80211_ATTR_MAC])
6564 return -EINVAL;
6565
6566 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6567
6568 if (!rdev->ops->get_mpp)
6569 return -EOPNOTSUPP;
6570
6571 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6572 return -EOPNOTSUPP;
6573
6574 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6575 if (err)
6576 return err;
6577
6578 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6579 if (!msg)
6580 return -ENOMEM;
6581
6582 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6583 dev, dst, mpp, &pinfo) < 0) {
6584 nlmsg_free(msg);
6585 return -ENOBUFS;
6586 }
6587
6588 return genlmsg_reply(msg, info);
6589 }
6590
6591 static int nl80211_dump_mpp(struct sk_buff *skb,
6592 struct netlink_callback *cb)
6593 {
6594 struct mpath_info pinfo;
6595 struct cfg80211_registered_device *rdev;
6596 struct wireless_dev *wdev;
6597 u8 dst[ETH_ALEN];
6598 u8 mpp[ETH_ALEN];
6599 int path_idx = cb->args[2];
6600 int err;
6601
6602 rtnl_lock();
6603 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6604 if (err)
6605 goto out_err;
6606
6607 if (!rdev->ops->dump_mpp) {
6608 err = -EOPNOTSUPP;
6609 goto out_err;
6610 }
6611
6612 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6613 err = -EOPNOTSUPP;
6614 goto out_err;
6615 }
6616
6617 while (1) {
6618 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6619 mpp, &pinfo);
6620 if (err == -ENOENT)
6621 break;
6622 if (err)
6623 goto out_err;
6624
6625 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6626 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6627 wdev->netdev, dst, mpp,
6628 &pinfo) < 0)
6629 goto out;
6630
6631 path_idx++;
6632 }
6633
6634 out:
6635 cb->args[2] = path_idx;
6636 err = skb->len;
6637 out_err:
6638 rtnl_unlock();
6639 return err;
6640 }
6641
6642 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6643 {
6644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6645 struct net_device *dev = info->user_ptr[1];
6646 struct wireless_dev *wdev = dev->ieee80211_ptr;
6647 struct bss_parameters params;
6648 int err;
6649
6650 memset(&params, 0, sizeof(params));
6651 /* default to not changing parameters */
6652 params.use_cts_prot = -1;
6653 params.use_short_preamble = -1;
6654 params.use_short_slot_time = -1;
6655 params.ap_isolate = -1;
6656 params.ht_opmode = -1;
6657 params.p2p_ctwindow = -1;
6658 params.p2p_opp_ps = -1;
6659
6660 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6661 params.use_cts_prot =
6662 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6663 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6664 params.use_short_preamble =
6665 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6666 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6667 params.use_short_slot_time =
6668 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6669 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6670 params.basic_rates =
6671 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6672 params.basic_rates_len =
6673 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6674 }
6675 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6676 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6677 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6678 params.ht_opmode =
6679 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6680
6681 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6682 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6683 return -EINVAL;
6684 params.p2p_ctwindow =
6685 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6686 if (params.p2p_ctwindow != 0 &&
6687 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6688 return -EINVAL;
6689 }
6690
6691 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6692 u8 tmp;
6693
6694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6695 return -EINVAL;
6696 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6697 params.p2p_opp_ps = tmp;
6698 if (params.p2p_opp_ps &&
6699 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6700 return -EINVAL;
6701 }
6702
6703 if (!rdev->ops->change_bss)
6704 return -EOPNOTSUPP;
6705
6706 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6707 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6708 return -EOPNOTSUPP;
6709
6710 wdev_lock(wdev);
6711 err = rdev_change_bss(rdev, dev, &params);
6712 wdev_unlock(wdev);
6713
6714 return err;
6715 }
6716
6717 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6718 {
6719 char *data = NULL;
6720 bool is_indoor;
6721 enum nl80211_user_reg_hint_type user_reg_hint_type;
6722 u32 owner_nlportid;
6723
6724 /*
6725 * You should only get this when cfg80211 hasn't yet initialized
6726 * completely when built-in to the kernel right between the time
6727 * window between nl80211_init() and regulatory_init(), if that is
6728 * even possible.
6729 */
6730 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6731 return -EINPROGRESS;
6732
6733 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6734 user_reg_hint_type =
6735 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6736 else
6737 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6738
6739 switch (user_reg_hint_type) {
6740 case NL80211_USER_REG_HINT_USER:
6741 case NL80211_USER_REG_HINT_CELL_BASE:
6742 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6743 return -EINVAL;
6744
6745 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6746 return regulatory_hint_user(data, user_reg_hint_type);
6747 case NL80211_USER_REG_HINT_INDOOR:
6748 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6749 owner_nlportid = info->snd_portid;
6750 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6751 } else {
6752 owner_nlportid = 0;
6753 is_indoor = true;
6754 }
6755
6756 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6757 default:
6758 return -EINVAL;
6759 }
6760 }
6761
6762 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6763 {
6764 return reg_reload_regdb();
6765 }
6766
6767 static int nl80211_get_mesh_config(struct sk_buff *skb,
6768 struct genl_info *info)
6769 {
6770 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6771 struct net_device *dev = info->user_ptr[1];
6772 struct wireless_dev *wdev = dev->ieee80211_ptr;
6773 struct mesh_config cur_params;
6774 int err = 0;
6775 void *hdr;
6776 struct nlattr *pinfoattr;
6777 struct sk_buff *msg;
6778
6779 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6780 return -EOPNOTSUPP;
6781
6782 if (!rdev->ops->get_mesh_config)
6783 return -EOPNOTSUPP;
6784
6785 wdev_lock(wdev);
6786 /* If not connected, get default parameters */
6787 if (!wdev->mesh_id_len)
6788 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6789 else
6790 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6791 wdev_unlock(wdev);
6792
6793 if (err)
6794 return err;
6795
6796 /* Draw up a netlink message to send back */
6797 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6798 if (!msg)
6799 return -ENOMEM;
6800 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6801 NL80211_CMD_GET_MESH_CONFIG);
6802 if (!hdr)
6803 goto out;
6804 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6805 if (!pinfoattr)
6806 goto nla_put_failure;
6807 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6808 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6809 cur_params.dot11MeshRetryTimeout) ||
6810 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6811 cur_params.dot11MeshConfirmTimeout) ||
6812 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6813 cur_params.dot11MeshHoldingTimeout) ||
6814 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6815 cur_params.dot11MeshMaxPeerLinks) ||
6816 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6817 cur_params.dot11MeshMaxRetries) ||
6818 nla_put_u8(msg, NL80211_MESHCONF_TTL,
6819 cur_params.dot11MeshTTL) ||
6820 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6821 cur_params.element_ttl) ||
6822 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6823 cur_params.auto_open_plinks) ||
6824 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6825 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6826 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6827 cur_params.dot11MeshHWMPmaxPREQretries) ||
6828 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6829 cur_params.path_refresh_time) ||
6830 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6831 cur_params.min_discovery_timeout) ||
6832 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6833 cur_params.dot11MeshHWMPactivePathTimeout) ||
6834 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6835 cur_params.dot11MeshHWMPpreqMinInterval) ||
6836 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6837 cur_params.dot11MeshHWMPperrMinInterval) ||
6838 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6839 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6840 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6841 cur_params.dot11MeshHWMPRootMode) ||
6842 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6843 cur_params.dot11MeshHWMPRannInterval) ||
6844 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6845 cur_params.dot11MeshGateAnnouncementProtocol) ||
6846 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6847 cur_params.dot11MeshForwarding) ||
6848 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6849 cur_params.rssi_threshold) ||
6850 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6851 cur_params.ht_opmode) ||
6852 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6853 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6854 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6855 cur_params.dot11MeshHWMProotInterval) ||
6856 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6857 cur_params.dot11MeshHWMPconfirmationInterval) ||
6858 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6859 cur_params.power_mode) ||
6860 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6861 cur_params.dot11MeshAwakeWindowDuration) ||
6862 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6863 cur_params.plink_timeout) ||
6864 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6865 cur_params.dot11MeshConnectedToMeshGate))
6866 goto nla_put_failure;
6867 nla_nest_end(msg, pinfoattr);
6868 genlmsg_end(msg, hdr);
6869 return genlmsg_reply(msg, info);
6870
6871 nla_put_failure:
6872 out:
6873 nlmsg_free(msg);
6874 return -ENOBUFS;
6875 }
6876
6877 static const struct nla_policy
6878 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6879 [NL80211_MESHCONF_RETRY_TIMEOUT] =
6880 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6881 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6882 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6883 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6884 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6885 [NL80211_MESHCONF_MAX_PEER_LINKS] =
6886 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6887 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6888 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6889 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6890 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6891 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6892 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6893 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6894 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6895 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6896 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6897 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6898 NLA_POLICY_MIN(NLA_U16, 1),
6899 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6900 NLA_POLICY_MIN(NLA_U16, 1),
6901 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6902 NLA_POLICY_MIN(NLA_U16, 1),
6903 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6904 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6905 NLA_POLICY_MIN(NLA_U16, 1),
6906 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6907 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6908 [NL80211_MESHCONF_RSSI_THRESHOLD] =
6909 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6910 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6911 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6912 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6913 NLA_POLICY_MIN(NLA_U16, 1),
6914 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6915 NLA_POLICY_MIN(NLA_U16, 1),
6916 [NL80211_MESHCONF_POWER_MODE] =
6917 NLA_POLICY_RANGE(NLA_U32,
6918 NL80211_MESH_POWER_ACTIVE,
6919 NL80211_MESH_POWER_MAX),
6920 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6921 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6922 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6923 };
6924
6925 static const struct nla_policy
6926 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6927 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6928 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6929 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6930 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6931 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6932 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6933 [NL80211_MESH_SETUP_IE] =
6934 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6935 IEEE80211_MAX_DATA_LEN),
6936 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6937 };
6938
6939 static int nl80211_parse_mesh_config(struct genl_info *info,
6940 struct mesh_config *cfg,
6941 u32 *mask_out)
6942 {
6943 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6944 u32 mask = 0;
6945 u16 ht_opmode;
6946
6947 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
6948 do { \
6949 if (tb[attr]) { \
6950 cfg->param = fn(tb[attr]); \
6951 mask |= BIT((attr) - 1); \
6952 } \
6953 } while (0)
6954
6955 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6956 return -EINVAL;
6957 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6958 return -EINVAL;
6959
6960 /* This makes sure that there aren't more than 32 mesh config
6961 * parameters (otherwise our bitfield scheme would not work.) */
6962 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6963
6964 /* Fill in the params struct */
6965 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6966 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6968 NL80211_MESHCONF_CONFIRM_TIMEOUT,
6969 nla_get_u16);
6970 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6971 NL80211_MESHCONF_HOLDING_TIMEOUT,
6972 nla_get_u16);
6973 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6974 NL80211_MESHCONF_MAX_PEER_LINKS,
6975 nla_get_u16);
6976 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6977 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6978 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6979 NL80211_MESHCONF_TTL, nla_get_u8);
6980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6981 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6982 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6983 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6984 nla_get_u8);
6985 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6986 mask,
6987 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6988 nla_get_u32);
6989 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6990 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6991 nla_get_u8);
6992 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6993 NL80211_MESHCONF_PATH_REFRESH_TIME,
6994 nla_get_u32);
6995 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6996 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6997 return -EINVAL;
6998 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6999 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7000 nla_get_u16);
7001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7002 mask,
7003 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7004 nla_get_u32);
7005 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7006 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7007 cfg->dot11MeshHWMPactivePathTimeout > 65535))
7008 return -EINVAL;
7009 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7010 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7011 nla_get_u16);
7012 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7013 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7014 nla_get_u16);
7015 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7016 dot11MeshHWMPnetDiameterTraversalTime, mask,
7017 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7018 nla_get_u16);
7019 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7020 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7021 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7022 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7023 nla_get_u16);
7024 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7025 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7026 nla_get_u8);
7027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7028 NL80211_MESHCONF_FORWARDING, nla_get_u8);
7029 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7030 NL80211_MESHCONF_RSSI_THRESHOLD,
7031 nla_get_s32);
7032 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7033 NL80211_MESHCONF_CONNECTED_TO_GATE,
7034 nla_get_u8);
7035 /*
7036 * Check HT operation mode based on
7037 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7038 */
7039 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7040 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7041
7042 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7043 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7044 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7045 return -EINVAL;
7046
7047 /* NON_HT_STA bit is reserved, but some programs set it */
7048 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7049
7050 cfg->ht_opmode = ht_opmode;
7051 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7052 }
7053 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7054 dot11MeshHWMPactivePathToRootTimeout, mask,
7055 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7056 nla_get_u32);
7057 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7058 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7059 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7060 return -EINVAL;
7061 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7062 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7063 nla_get_u16);
7064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7065 mask,
7066 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7067 nla_get_u16);
7068 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7069 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7070 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7071 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7072 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7073 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7074 if (mask_out)
7075 *mask_out = mask;
7076
7077 return 0;
7078
7079 #undef FILL_IN_MESH_PARAM_IF_SET
7080 }
7081
7082 static int nl80211_parse_mesh_setup(struct genl_info *info,
7083 struct mesh_setup *setup)
7084 {
7085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7086 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7087
7088 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7089 return -EINVAL;
7090 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7091 return -EINVAL;
7092
7093 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7094 setup->sync_method =
7095 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7096 IEEE80211_SYNC_METHOD_VENDOR :
7097 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7098
7099 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7100 setup->path_sel_proto =
7101 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7102 IEEE80211_PATH_PROTOCOL_VENDOR :
7103 IEEE80211_PATH_PROTOCOL_HWMP;
7104
7105 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7106 setup->path_metric =
7107 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7108 IEEE80211_PATH_METRIC_VENDOR :
7109 IEEE80211_PATH_METRIC_AIRTIME;
7110
7111 if (tb[NL80211_MESH_SETUP_IE]) {
7112 struct nlattr *ieattr =
7113 tb[NL80211_MESH_SETUP_IE];
7114 setup->ie = nla_data(ieattr);
7115 setup->ie_len = nla_len(ieattr);
7116 }
7117 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7118 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7119 return -EINVAL;
7120 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7121 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7122 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7123 if (setup->is_secure)
7124 setup->user_mpm = true;
7125
7126 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7127 if (!setup->user_mpm)
7128 return -EINVAL;
7129 setup->auth_id =
7130 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7131 }
7132
7133 return 0;
7134 }
7135
7136 static int nl80211_update_mesh_config(struct sk_buff *skb,
7137 struct genl_info *info)
7138 {
7139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7140 struct net_device *dev = info->user_ptr[1];
7141 struct wireless_dev *wdev = dev->ieee80211_ptr;
7142 struct mesh_config cfg;
7143 u32 mask;
7144 int err;
7145
7146 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7147 return -EOPNOTSUPP;
7148
7149 if (!rdev->ops->update_mesh_config)
7150 return -EOPNOTSUPP;
7151
7152 err = nl80211_parse_mesh_config(info, &cfg, &mask);
7153 if (err)
7154 return err;
7155
7156 wdev_lock(wdev);
7157 if (!wdev->mesh_id_len)
7158 err = -ENOLINK;
7159
7160 if (!err)
7161 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7162
7163 wdev_unlock(wdev);
7164
7165 return err;
7166 }
7167
7168 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7169 struct sk_buff *msg)
7170 {
7171 struct nlattr *nl_reg_rules;
7172 unsigned int i;
7173
7174 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7175 (regdom->dfs_region &&
7176 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7177 goto nla_put_failure;
7178
7179 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7180 if (!nl_reg_rules)
7181 goto nla_put_failure;
7182
7183 for (i = 0; i < regdom->n_reg_rules; i++) {
7184 struct nlattr *nl_reg_rule;
7185 const struct ieee80211_reg_rule *reg_rule;
7186 const struct ieee80211_freq_range *freq_range;
7187 const struct ieee80211_power_rule *power_rule;
7188 unsigned int max_bandwidth_khz;
7189
7190 reg_rule = &regdom->reg_rules[i];
7191 freq_range = &reg_rule->freq_range;
7192 power_rule = &reg_rule->power_rule;
7193
7194 nl_reg_rule = nla_nest_start_noflag(msg, i);
7195 if (!nl_reg_rule)
7196 goto nla_put_failure;
7197
7198 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7199 if (!max_bandwidth_khz)
7200 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7201 reg_rule);
7202
7203 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7204 reg_rule->flags) ||
7205 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7206 freq_range->start_freq_khz) ||
7207 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7208 freq_range->end_freq_khz) ||
7209 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7210 max_bandwidth_khz) ||
7211 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7212 power_rule->max_antenna_gain) ||
7213 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7214 power_rule->max_eirp) ||
7215 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7216 reg_rule->dfs_cac_ms))
7217 goto nla_put_failure;
7218
7219 nla_nest_end(msg, nl_reg_rule);
7220 }
7221
7222 nla_nest_end(msg, nl_reg_rules);
7223 return 0;
7224
7225 nla_put_failure:
7226 return -EMSGSIZE;
7227 }
7228
7229 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7230 {
7231 const struct ieee80211_regdomain *regdom = NULL;
7232 struct cfg80211_registered_device *rdev;
7233 struct wiphy *wiphy = NULL;
7234 struct sk_buff *msg;
7235 void *hdr;
7236
7237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7238 if (!msg)
7239 return -ENOBUFS;
7240
7241 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7242 NL80211_CMD_GET_REG);
7243 if (!hdr)
7244 goto put_failure;
7245
7246 if (info->attrs[NL80211_ATTR_WIPHY]) {
7247 bool self_managed;
7248
7249 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7250 if (IS_ERR(rdev)) {
7251 nlmsg_free(msg);
7252 return PTR_ERR(rdev);
7253 }
7254
7255 wiphy = &rdev->wiphy;
7256 self_managed = wiphy->regulatory_flags &
7257 REGULATORY_WIPHY_SELF_MANAGED;
7258 regdom = get_wiphy_regdom(wiphy);
7259
7260 /* a self-managed-reg device must have a private regdom */
7261 if (WARN_ON(!regdom && self_managed)) {
7262 nlmsg_free(msg);
7263 return -EINVAL;
7264 }
7265
7266 if (regdom &&
7267 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7268 goto nla_put_failure;
7269 }
7270
7271 if (!wiphy && reg_last_request_cell_base() &&
7272 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7273 NL80211_USER_REG_HINT_CELL_BASE))
7274 goto nla_put_failure;
7275
7276 rcu_read_lock();
7277
7278 if (!regdom)
7279 regdom = rcu_dereference(cfg80211_regdomain);
7280
7281 if (nl80211_put_regdom(regdom, msg))
7282 goto nla_put_failure_rcu;
7283
7284 rcu_read_unlock();
7285
7286 genlmsg_end(msg, hdr);
7287 return genlmsg_reply(msg, info);
7288
7289 nla_put_failure_rcu:
7290 rcu_read_unlock();
7291 nla_put_failure:
7292 put_failure:
7293 nlmsg_free(msg);
7294 return -EMSGSIZE;
7295 }
7296
7297 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7298 u32 seq, int flags, struct wiphy *wiphy,
7299 const struct ieee80211_regdomain *regdom)
7300 {
7301 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7302 NL80211_CMD_GET_REG);
7303
7304 if (!hdr)
7305 return -1;
7306
7307 genl_dump_check_consistent(cb, hdr);
7308
7309 if (nl80211_put_regdom(regdom, msg))
7310 goto nla_put_failure;
7311
7312 if (!wiphy && reg_last_request_cell_base() &&
7313 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7314 NL80211_USER_REG_HINT_CELL_BASE))
7315 goto nla_put_failure;
7316
7317 if (wiphy &&
7318 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7319 goto nla_put_failure;
7320
7321 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7322 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7323 goto nla_put_failure;
7324
7325 genlmsg_end(msg, hdr);
7326 return 0;
7327
7328 nla_put_failure:
7329 genlmsg_cancel(msg, hdr);
7330 return -EMSGSIZE;
7331 }
7332
7333 static int nl80211_get_reg_dump(struct sk_buff *skb,
7334 struct netlink_callback *cb)
7335 {
7336 const struct ieee80211_regdomain *regdom = NULL;
7337 struct cfg80211_registered_device *rdev;
7338 int err, reg_idx, start = cb->args[2];
7339
7340 rtnl_lock();
7341
7342 if (cfg80211_regdomain && start == 0) {
7343 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7344 NLM_F_MULTI, NULL,
7345 rtnl_dereference(cfg80211_regdomain));
7346 if (err < 0)
7347 goto out_err;
7348 }
7349
7350 /* the global regdom is idx 0 */
7351 reg_idx = 1;
7352 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7353 regdom = get_wiphy_regdom(&rdev->wiphy);
7354 if (!regdom)
7355 continue;
7356
7357 if (++reg_idx <= start)
7358 continue;
7359
7360 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7361 NLM_F_MULTI, &rdev->wiphy, regdom);
7362 if (err < 0) {
7363 reg_idx--;
7364 break;
7365 }
7366 }
7367
7368 cb->args[2] = reg_idx;
7369 err = skb->len;
7370 out_err:
7371 rtnl_unlock();
7372 return err;
7373 }
7374
7375 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7376 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7377 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7378 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7379 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7380 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7381 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7382 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7383 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7384 };
7385
7386 static int parse_reg_rule(struct nlattr *tb[],
7387 struct ieee80211_reg_rule *reg_rule)
7388 {
7389 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7390 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7391
7392 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7393 return -EINVAL;
7394 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7395 return -EINVAL;
7396 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7397 return -EINVAL;
7398 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7399 return -EINVAL;
7400 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7401 return -EINVAL;
7402
7403 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7404
7405 freq_range->start_freq_khz =
7406 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7407 freq_range->end_freq_khz =
7408 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7409 freq_range->max_bandwidth_khz =
7410 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7411
7412 power_rule->max_eirp =
7413 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7414
7415 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7416 power_rule->max_antenna_gain =
7417 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7418
7419 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7420 reg_rule->dfs_cac_ms =
7421 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7422
7423 return 0;
7424 }
7425
7426 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7427 {
7428 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7429 struct nlattr *nl_reg_rule;
7430 char *alpha2;
7431 int rem_reg_rules, r;
7432 u32 num_rules = 0, rule_idx = 0;
7433 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7434 struct ieee80211_regdomain *rd;
7435
7436 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7437 return -EINVAL;
7438
7439 if (!info->attrs[NL80211_ATTR_REG_RULES])
7440 return -EINVAL;
7441
7442 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7443
7444 if (info->attrs[NL80211_ATTR_DFS_REGION])
7445 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7446
7447 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7448 rem_reg_rules) {
7449 num_rules++;
7450 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7451 return -EINVAL;
7452 }
7453
7454 if (!reg_is_valid_request(alpha2))
7455 return -EINVAL;
7456
7457 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7458 if (!rd)
7459 return -ENOMEM;
7460
7461 rd->n_reg_rules = num_rules;
7462 rd->alpha2[0] = alpha2[0];
7463 rd->alpha2[1] = alpha2[1];
7464
7465 /*
7466 * Disable DFS master mode if the DFS region was
7467 * not supported or known on this kernel.
7468 */
7469 if (reg_supported_dfs_region(dfs_region))
7470 rd->dfs_region = dfs_region;
7471
7472 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7473 rem_reg_rules) {
7474 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7475 nl_reg_rule, reg_rule_policy,
7476 info->extack);
7477 if (r)
7478 goto bad_reg;
7479 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7480 if (r)
7481 goto bad_reg;
7482
7483 rule_idx++;
7484
7485 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7486 r = -EINVAL;
7487 goto bad_reg;
7488 }
7489 }
7490
7491 /* set_regdom takes ownership of rd */
7492 return set_regdom(rd, REGD_SOURCE_CRDA);
7493 bad_reg:
7494 kfree(rd);
7495 return r;
7496 }
7497 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7498
7499 static int validate_scan_freqs(struct nlattr *freqs)
7500 {
7501 struct nlattr *attr1, *attr2;
7502 int n_channels = 0, tmp1, tmp2;
7503
7504 nla_for_each_nested(attr1, freqs, tmp1)
7505 if (nla_len(attr1) != sizeof(u32))
7506 return 0;
7507
7508 nla_for_each_nested(attr1, freqs, tmp1) {
7509 n_channels++;
7510 /*
7511 * Some hardware has a limited channel list for
7512 * scanning, and it is pretty much nonsensical
7513 * to scan for a channel twice, so disallow that
7514 * and don't require drivers to check that the
7515 * channel list they get isn't longer than what
7516 * they can scan, as long as they can scan all
7517 * the channels they registered at once.
7518 */
7519 nla_for_each_nested(attr2, freqs, tmp2)
7520 if (attr1 != attr2 &&
7521 nla_get_u32(attr1) == nla_get_u32(attr2))
7522 return 0;
7523 }
7524
7525 return n_channels;
7526 }
7527
7528 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7529 {
7530 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7531 }
7532
7533 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7534 struct cfg80211_bss_selection *bss_select)
7535 {
7536 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7537 struct nlattr *nest;
7538 int err;
7539 bool found = false;
7540 int i;
7541
7542 /* only process one nested attribute */
7543 nest = nla_data(nla);
7544 if (!nla_ok(nest, nla_len(nest)))
7545 return -EINVAL;
7546
7547 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7548 nest, nl80211_bss_select_policy,
7549 NULL);
7550 if (err)
7551 return err;
7552
7553 /* only one attribute may be given */
7554 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7555 if (attr[i]) {
7556 if (found)
7557 return -EINVAL;
7558 found = true;
7559 }
7560 }
7561
7562 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7563
7564 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7565 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7566
7567 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7568 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7569 bss_select->param.band_pref =
7570 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7571 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7572 return -EINVAL;
7573 }
7574
7575 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7576 struct nl80211_bss_select_rssi_adjust *adj_param;
7577
7578 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7579 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7580 bss_select->param.adjust.band = adj_param->band;
7581 bss_select->param.adjust.delta = adj_param->delta;
7582 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7583 return -EINVAL;
7584 }
7585
7586 /* user-space did not provide behaviour attribute */
7587 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7588 return -EINVAL;
7589
7590 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7591 return -EINVAL;
7592
7593 return 0;
7594 }
7595
7596 int nl80211_parse_random_mac(struct nlattr **attrs,
7597 u8 *mac_addr, u8 *mac_addr_mask)
7598 {
7599 int i;
7600
7601 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7602 eth_zero_addr(mac_addr);
7603 eth_zero_addr(mac_addr_mask);
7604 mac_addr[0] = 0x2;
7605 mac_addr_mask[0] = 0x3;
7606
7607 return 0;
7608 }
7609
7610 /* need both or none */
7611 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7612 return -EINVAL;
7613
7614 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7615 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7616
7617 /* don't allow or configure an mcast address */
7618 if (!is_multicast_ether_addr(mac_addr_mask) ||
7619 is_multicast_ether_addr(mac_addr))
7620 return -EINVAL;
7621
7622 /*
7623 * allow users to pass a MAC address that has bits set outside
7624 * of the mask, but don't bother drivers with having to deal
7625 * with such bits
7626 */
7627 for (i = 0; i < ETH_ALEN; i++)
7628 mac_addr[i] &= mac_addr_mask[i];
7629
7630 return 0;
7631 }
7632
7633 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7634 {
7635 ASSERT_WDEV_LOCK(wdev);
7636
7637 if (!cfg80211_beaconing_iface_active(wdev))
7638 return true;
7639
7640 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7641 return true;
7642
7643 return regulatory_pre_cac_allowed(wdev->wiphy);
7644 }
7645
7646 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7647 enum nl80211_ext_feature_index feat)
7648 {
7649 if (!(flags & flag))
7650 return true;
7651 if (wiphy_ext_feature_isset(wiphy, feat))
7652 return true;
7653 return false;
7654 }
7655
7656 static int
7657 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7658 void *request, struct nlattr **attrs,
7659 bool is_sched_scan)
7660 {
7661 u8 *mac_addr, *mac_addr_mask;
7662 u32 *flags;
7663 enum nl80211_feature_flags randomness_flag;
7664
7665 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7666 return 0;
7667
7668 if (is_sched_scan) {
7669 struct cfg80211_sched_scan_request *req = request;
7670
7671 randomness_flag = wdev ?
7672 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7673 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7674 flags = &req->flags;
7675 mac_addr = req->mac_addr;
7676 mac_addr_mask = req->mac_addr_mask;
7677 } else {
7678 struct cfg80211_scan_request *req = request;
7679
7680 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7681 flags = &req->flags;
7682 mac_addr = req->mac_addr;
7683 mac_addr_mask = req->mac_addr_mask;
7684 }
7685
7686 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7687
7688 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7689 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7690 !nl80211_check_scan_feat(wiphy, *flags,
7691 NL80211_SCAN_FLAG_LOW_SPAN,
7692 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7693 !nl80211_check_scan_feat(wiphy, *flags,
7694 NL80211_SCAN_FLAG_LOW_POWER,
7695 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7696 !nl80211_check_scan_feat(wiphy, *flags,
7697 NL80211_SCAN_FLAG_HIGH_ACCURACY,
7698 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7699 !nl80211_check_scan_feat(wiphy, *flags,
7700 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7701 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7702 !nl80211_check_scan_feat(wiphy, *flags,
7703 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7704 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7705 !nl80211_check_scan_feat(wiphy, *flags,
7706 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7707 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7708 !nl80211_check_scan_feat(wiphy, *flags,
7709 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7710 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7711 !nl80211_check_scan_feat(wiphy, *flags,
7712 NL80211_SCAN_FLAG_RANDOM_SN,
7713 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7714 !nl80211_check_scan_feat(wiphy, *flags,
7715 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7716 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7717 return -EOPNOTSUPP;
7718
7719 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7720 int err;
7721
7722 if (!(wiphy->features & randomness_flag) ||
7723 (wdev && wdev->current_bss))
7724 return -EOPNOTSUPP;
7725
7726 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7727 if (err)
7728 return err;
7729 }
7730
7731 return 0;
7732 }
7733
7734 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7735 {
7736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7737 struct wireless_dev *wdev = info->user_ptr[1];
7738 struct cfg80211_scan_request *request;
7739 struct nlattr *attr;
7740 struct wiphy *wiphy;
7741 int err, tmp, n_ssids = 0, n_channels, i;
7742 size_t ie_len;
7743
7744 wiphy = &rdev->wiphy;
7745
7746 if (wdev->iftype == NL80211_IFTYPE_NAN)
7747 return -EOPNOTSUPP;
7748
7749 if (!rdev->ops->scan)
7750 return -EOPNOTSUPP;
7751
7752 if (rdev->scan_req || rdev->scan_msg) {
7753 err = -EBUSY;
7754 goto unlock;
7755 }
7756
7757 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7758 n_channels = validate_scan_freqs(
7759 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7760 if (!n_channels) {
7761 err = -EINVAL;
7762 goto unlock;
7763 }
7764 } else {
7765 n_channels = ieee80211_get_num_supported_channels(wiphy);
7766 }
7767
7768 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7769 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7770 n_ssids++;
7771
7772 if (n_ssids > wiphy->max_scan_ssids) {
7773 err = -EINVAL;
7774 goto unlock;
7775 }
7776
7777 if (info->attrs[NL80211_ATTR_IE])
7778 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7779 else
7780 ie_len = 0;
7781
7782 if (ie_len > wiphy->max_scan_ie_len) {
7783 err = -EINVAL;
7784 goto unlock;
7785 }
7786
7787 request = kzalloc(sizeof(*request)
7788 + sizeof(*request->ssids) * n_ssids
7789 + sizeof(*request->channels) * n_channels
7790 + ie_len, GFP_KERNEL);
7791 if (!request) {
7792 err = -ENOMEM;
7793 goto unlock;
7794 }
7795
7796 if (n_ssids)
7797 request->ssids = (void *)&request->channels[n_channels];
7798 request->n_ssids = n_ssids;
7799 if (ie_len) {
7800 if (n_ssids)
7801 request->ie = (void *)(request->ssids + n_ssids);
7802 else
7803 request->ie = (void *)(request->channels + n_channels);
7804 }
7805
7806 i = 0;
7807 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7808 /* user specified, bail out if channel not found */
7809 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7810 struct ieee80211_channel *chan;
7811
7812 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7813
7814 if (!chan) {
7815 err = -EINVAL;
7816 goto out_free;
7817 }
7818
7819 /* ignore disabled channels */
7820 if (chan->flags & IEEE80211_CHAN_DISABLED)
7821 continue;
7822
7823 request->channels[i] = chan;
7824 i++;
7825 }
7826 } else {
7827 enum nl80211_band band;
7828
7829 /* all channels */
7830 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7831 int j;
7832
7833 if (!wiphy->bands[band])
7834 continue;
7835 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7836 struct ieee80211_channel *chan;
7837
7838 chan = &wiphy->bands[band]->channels[j];
7839
7840 if (chan->flags & IEEE80211_CHAN_DISABLED)
7841 continue;
7842
7843 request->channels[i] = chan;
7844 i++;
7845 }
7846 }
7847 }
7848
7849 if (!i) {
7850 err = -EINVAL;
7851 goto out_free;
7852 }
7853
7854 request->n_channels = i;
7855
7856 wdev_lock(wdev);
7857 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7858 struct ieee80211_channel *chan;
7859
7860 if (request->n_channels != 1) {
7861 wdev_unlock(wdev);
7862 err = -EBUSY;
7863 goto out_free;
7864 }
7865
7866 chan = request->channels[0];
7867 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7868 wdev_unlock(wdev);
7869 err = -EBUSY;
7870 goto out_free;
7871 }
7872 }
7873 wdev_unlock(wdev);
7874
7875 i = 0;
7876 if (n_ssids) {
7877 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7878 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7879 err = -EINVAL;
7880 goto out_free;
7881 }
7882 request->ssids[i].ssid_len = nla_len(attr);
7883 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7884 i++;
7885 }
7886 }
7887
7888 if (info->attrs[NL80211_ATTR_IE]) {
7889 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7890 memcpy((void *)request->ie,
7891 nla_data(info->attrs[NL80211_ATTR_IE]),
7892 request->ie_len);
7893 }
7894
7895 for (i = 0; i < NUM_NL80211_BANDS; i++)
7896 if (wiphy->bands[i])
7897 request->rates[i] =
7898 (1 << wiphy->bands[i]->n_bitrates) - 1;
7899
7900 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7901 nla_for_each_nested(attr,
7902 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7903 tmp) {
7904 enum nl80211_band band = nla_type(attr);
7905
7906 if (band < 0 || band >= NUM_NL80211_BANDS) {
7907 err = -EINVAL;
7908 goto out_free;
7909 }
7910
7911 if (!wiphy->bands[band])
7912 continue;
7913
7914 err = ieee80211_get_ratemask(wiphy->bands[band],
7915 nla_data(attr),
7916 nla_len(attr),
7917 &request->rates[band]);
7918 if (err)
7919 goto out_free;
7920 }
7921 }
7922
7923 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7924 if (!wiphy_ext_feature_isset(wiphy,
7925 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7926 err = -EOPNOTSUPP;
7927 goto out_free;
7928 }
7929
7930 request->duration =
7931 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7932 request->duration_mandatory =
7933 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7934 }
7935
7936 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7937 false);
7938 if (err)
7939 goto out_free;
7940
7941 request->no_cck =
7942 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7943
7944 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7945 * BSSID to scan for. This was problematic because that same attribute
7946 * was already used for another purpose (local random MAC address). The
7947 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7948 * compatibility with older userspace components, also use the
7949 * NL80211_ATTR_MAC value here if it can be determined to be used for
7950 * the specific BSSID use case instead of the random MAC address
7951 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7952 */
7953 if (info->attrs[NL80211_ATTR_BSSID])
7954 memcpy(request->bssid,
7955 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7956 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7957 info->attrs[NL80211_ATTR_MAC])
7958 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7959 ETH_ALEN);
7960 else
7961 eth_broadcast_addr(request->bssid);
7962
7963 request->wdev = wdev;
7964 request->wiphy = &rdev->wiphy;
7965 request->scan_start = jiffies;
7966
7967 rdev->scan_req = request;
7968 err = rdev_scan(rdev, request);
7969
7970 if (!err) {
7971 nl80211_send_scan_start(rdev, wdev);
7972 if (wdev->netdev)
7973 dev_hold(wdev->netdev);
7974 } else {
7975 out_free:
7976 rdev->scan_req = NULL;
7977 kfree(request);
7978 }
7979
7980 unlock:
7981 return err;
7982 }
7983
7984 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7985 {
7986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7987 struct wireless_dev *wdev = info->user_ptr[1];
7988
7989 if (!rdev->ops->abort_scan)
7990 return -EOPNOTSUPP;
7991
7992 if (rdev->scan_msg)
7993 return 0;
7994
7995 if (!rdev->scan_req)
7996 return -ENOENT;
7997
7998 rdev_abort_scan(rdev, wdev);
7999 return 0;
8000 }
8001
8002 static int
8003 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8004 struct cfg80211_sched_scan_request *request,
8005 struct nlattr **attrs)
8006 {
8007 int tmp, err, i = 0;
8008 struct nlattr *attr;
8009
8010 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8011 u32 interval;
8012
8013 /*
8014 * If scan plans are not specified,
8015 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8016 * case one scan plan will be set with the specified scan
8017 * interval and infinite number of iterations.
8018 */
8019 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8020 if (!interval)
8021 return -EINVAL;
8022
8023 request->scan_plans[0].interval =
8024 DIV_ROUND_UP(interval, MSEC_PER_SEC);
8025 if (!request->scan_plans[0].interval)
8026 return -EINVAL;
8027
8028 if (request->scan_plans[0].interval >
8029 wiphy->max_sched_scan_plan_interval)
8030 request->scan_plans[0].interval =
8031 wiphy->max_sched_scan_plan_interval;
8032
8033 return 0;
8034 }
8035
8036 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8037 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8038
8039 if (WARN_ON(i >= n_plans))
8040 return -EINVAL;
8041
8042 err = nla_parse_nested_deprecated(plan,
8043 NL80211_SCHED_SCAN_PLAN_MAX,
8044 attr, nl80211_plan_policy,
8045 NULL);
8046 if (err)
8047 return err;
8048
8049 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8050 return -EINVAL;
8051
8052 request->scan_plans[i].interval =
8053 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8054 if (!request->scan_plans[i].interval ||
8055 request->scan_plans[i].interval >
8056 wiphy->max_sched_scan_plan_interval)
8057 return -EINVAL;
8058
8059 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8060 request->scan_plans[i].iterations =
8061 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8062 if (!request->scan_plans[i].iterations ||
8063 (request->scan_plans[i].iterations >
8064 wiphy->max_sched_scan_plan_iterations))
8065 return -EINVAL;
8066 } else if (i < n_plans - 1) {
8067 /*
8068 * All scan plans but the last one must specify
8069 * a finite number of iterations
8070 */
8071 return -EINVAL;
8072 }
8073
8074 i++;
8075 }
8076
8077 /*
8078 * The last scan plan must not specify the number of
8079 * iterations, it is supposed to run infinitely
8080 */
8081 if (request->scan_plans[n_plans - 1].iterations)
8082 return -EINVAL;
8083
8084 return 0;
8085 }
8086
8087 static int
8088 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8089 struct cfg80211_match_set *match_sets,
8090 struct nlattr *tb_band_rssi,
8091 s32 rssi_thold)
8092 {
8093 struct nlattr *attr;
8094 int i, tmp, ret = 0;
8095
8096 if (!wiphy_ext_feature_isset(wiphy,
8097 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8098 if (tb_band_rssi)
8099 ret = -EOPNOTSUPP;
8100 else
8101 for (i = 0; i < NUM_NL80211_BANDS; i++)
8102 match_sets->per_band_rssi_thold[i] =
8103 NL80211_SCAN_RSSI_THOLD_OFF;
8104 return ret;
8105 }
8106
8107 for (i = 0; i < NUM_NL80211_BANDS; i++)
8108 match_sets->per_band_rssi_thold[i] = rssi_thold;
8109
8110 nla_for_each_nested(attr, tb_band_rssi, tmp) {
8111 enum nl80211_band band = nla_type(attr);
8112
8113 if (band < 0 || band >= NUM_NL80211_BANDS)
8114 return -EINVAL;
8115
8116 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8117 }
8118
8119 return 0;
8120 }
8121
8122 static struct cfg80211_sched_scan_request *
8123 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8124 struct nlattr **attrs, int max_match_sets)
8125 {
8126 struct cfg80211_sched_scan_request *request;
8127 struct nlattr *attr;
8128 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8129 enum nl80211_band band;
8130 size_t ie_len;
8131 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8132 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8133
8134 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8135 n_channels = validate_scan_freqs(
8136 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8137 if (!n_channels)
8138 return ERR_PTR(-EINVAL);
8139 } else {
8140 n_channels = ieee80211_get_num_supported_channels(wiphy);
8141 }
8142
8143 if (attrs[NL80211_ATTR_SCAN_SSIDS])
8144 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8145 tmp)
8146 n_ssids++;
8147
8148 if (n_ssids > wiphy->max_sched_scan_ssids)
8149 return ERR_PTR(-EINVAL);
8150
8151 /*
8152 * First, count the number of 'real' matchsets. Due to an issue with
8153 * the old implementation, matchsets containing only the RSSI attribute
8154 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8155 * RSSI for all matchsets, rather than their own matchset for reporting
8156 * all APs with a strong RSSI. This is needed to be compatible with
8157 * older userspace that treated a matchset with only the RSSI as the
8158 * global RSSI for all other matchsets - if there are other matchsets.
8159 */
8160 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8161 nla_for_each_nested(attr,
8162 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8163 tmp) {
8164 struct nlattr *rssi;
8165
8166 err = nla_parse_nested_deprecated(tb,
8167 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8168 attr,
8169 nl80211_match_policy,
8170 NULL);
8171 if (err)
8172 return ERR_PTR(err);
8173
8174 /* SSID and BSSID are mutually exclusive */
8175 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8176 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8177 return ERR_PTR(-EINVAL);
8178
8179 /* add other standalone attributes here */
8180 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8181 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8182 n_match_sets++;
8183 continue;
8184 }
8185 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8186 if (rssi)
8187 default_match_rssi = nla_get_s32(rssi);
8188 }
8189 }
8190
8191 /* However, if there's no other matchset, add the RSSI one */
8192 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8193 n_match_sets = 1;
8194
8195 if (n_match_sets > max_match_sets)
8196 return ERR_PTR(-EINVAL);
8197
8198 if (attrs[NL80211_ATTR_IE])
8199 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8200 else
8201 ie_len = 0;
8202
8203 if (ie_len > wiphy->max_sched_scan_ie_len)
8204 return ERR_PTR(-EINVAL);
8205
8206 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8207 /*
8208 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8209 * each scan plan already specifies its own interval
8210 */
8211 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8212 return ERR_PTR(-EINVAL);
8213
8214 nla_for_each_nested(attr,
8215 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8216 n_plans++;
8217 } else {
8218 /*
8219 * The scan interval attribute is kept for backward
8220 * compatibility. If no scan plans are specified and sched scan
8221 * interval is specified, one scan plan will be set with this
8222 * scan interval and infinite number of iterations.
8223 */
8224 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8225 return ERR_PTR(-EINVAL);
8226
8227 n_plans = 1;
8228 }
8229
8230 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8231 return ERR_PTR(-EINVAL);
8232
8233 if (!wiphy_ext_feature_isset(
8234 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8235 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8236 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8237 return ERR_PTR(-EINVAL);
8238
8239 request = kzalloc(sizeof(*request)
8240 + sizeof(*request->ssids) * n_ssids
8241 + sizeof(*request->match_sets) * n_match_sets
8242 + sizeof(*request->scan_plans) * n_plans
8243 + sizeof(*request->channels) * n_channels
8244 + ie_len, GFP_KERNEL);
8245 if (!request)
8246 return ERR_PTR(-ENOMEM);
8247
8248 if (n_ssids)
8249 request->ssids = (void *)&request->channels[n_channels];
8250 request->n_ssids = n_ssids;
8251 if (ie_len) {
8252 if (n_ssids)
8253 request->ie = (void *)(request->ssids + n_ssids);
8254 else
8255 request->ie = (void *)(request->channels + n_channels);
8256 }
8257
8258 if (n_match_sets) {
8259 if (request->ie)
8260 request->match_sets = (void *)(request->ie + ie_len);
8261 else if (n_ssids)
8262 request->match_sets =
8263 (void *)(request->ssids + n_ssids);
8264 else
8265 request->match_sets =
8266 (void *)(request->channels + n_channels);
8267 }
8268 request->n_match_sets = n_match_sets;
8269
8270 if (n_match_sets)
8271 request->scan_plans = (void *)(request->match_sets +
8272 n_match_sets);
8273 else if (request->ie)
8274 request->scan_plans = (void *)(request->ie + ie_len);
8275 else if (n_ssids)
8276 request->scan_plans = (void *)(request->ssids + n_ssids);
8277 else
8278 request->scan_plans = (void *)(request->channels + n_channels);
8279
8280 request->n_scan_plans = n_plans;
8281
8282 i = 0;
8283 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8284 /* user specified, bail out if channel not found */
8285 nla_for_each_nested(attr,
8286 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8287 tmp) {
8288 struct ieee80211_channel *chan;
8289
8290 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8291
8292 if (!chan) {
8293 err = -EINVAL;
8294 goto out_free;
8295 }
8296
8297 /* ignore disabled channels */
8298 if (chan->flags & IEEE80211_CHAN_DISABLED)
8299 continue;
8300
8301 request->channels[i] = chan;
8302 i++;
8303 }
8304 } else {
8305 /* all channels */
8306 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8307 int j;
8308
8309 if (!wiphy->bands[band])
8310 continue;
8311 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8312 struct ieee80211_channel *chan;
8313
8314 chan = &wiphy->bands[band]->channels[j];
8315
8316 if (chan->flags & IEEE80211_CHAN_DISABLED)
8317 continue;
8318
8319 request->channels[i] = chan;
8320 i++;
8321 }
8322 }
8323 }
8324
8325 if (!i) {
8326 err = -EINVAL;
8327 goto out_free;
8328 }
8329
8330 request->n_channels = i;
8331
8332 i = 0;
8333 if (n_ssids) {
8334 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8335 tmp) {
8336 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8337 err = -EINVAL;
8338 goto out_free;
8339 }
8340 request->ssids[i].ssid_len = nla_len(attr);
8341 memcpy(request->ssids[i].ssid, nla_data(attr),
8342 nla_len(attr));
8343 i++;
8344 }
8345 }
8346
8347 i = 0;
8348 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8349 nla_for_each_nested(attr,
8350 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8351 tmp) {
8352 struct nlattr *ssid, *bssid, *rssi;
8353
8354 err = nla_parse_nested_deprecated(tb,
8355 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8356 attr,
8357 nl80211_match_policy,
8358 NULL);
8359 if (err)
8360 goto out_free;
8361 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8362 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8363
8364 if (!ssid && !bssid) {
8365 i++;
8366 continue;
8367 }
8368
8369 if (WARN_ON(i >= n_match_sets)) {
8370 /* this indicates a programming error,
8371 * the loop above should have verified
8372 * things properly
8373 */
8374 err = -EINVAL;
8375 goto out_free;
8376 }
8377
8378 if (ssid) {
8379 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8380 err = -EINVAL;
8381 goto out_free;
8382 }
8383 memcpy(request->match_sets[i].ssid.ssid,
8384 nla_data(ssid), nla_len(ssid));
8385 request->match_sets[i].ssid.ssid_len =
8386 nla_len(ssid);
8387 }
8388 if (bssid) {
8389 if (nla_len(bssid) != ETH_ALEN) {
8390 err = -EINVAL;
8391 goto out_free;
8392 }
8393 memcpy(request->match_sets[i].bssid,
8394 nla_data(bssid), ETH_ALEN);
8395 }
8396
8397 /* special attribute - old implementation w/a */
8398 request->match_sets[i].rssi_thold = default_match_rssi;
8399 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8400 if (rssi)
8401 request->match_sets[i].rssi_thold =
8402 nla_get_s32(rssi);
8403
8404 /* Parse per band RSSI attribute */
8405 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8406 &request->match_sets[i],
8407 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8408 request->match_sets[i].rssi_thold);
8409 if (err)
8410 goto out_free;
8411
8412 i++;
8413 }
8414
8415 /* there was no other matchset, so the RSSI one is alone */
8416 if (i == 0 && n_match_sets)
8417 request->match_sets[0].rssi_thold = default_match_rssi;
8418
8419 request->min_rssi_thold = INT_MAX;
8420 for (i = 0; i < n_match_sets; i++)
8421 request->min_rssi_thold =
8422 min(request->match_sets[i].rssi_thold,
8423 request->min_rssi_thold);
8424 } else {
8425 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8426 }
8427
8428 if (ie_len) {
8429 request->ie_len = ie_len;
8430 memcpy((void *)request->ie,
8431 nla_data(attrs[NL80211_ATTR_IE]),
8432 request->ie_len);
8433 }
8434
8435 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8436 if (err)
8437 goto out_free;
8438
8439 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8440 request->delay =
8441 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8442
8443 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8444 request->relative_rssi = nla_get_s8(
8445 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8446 request->relative_rssi_set = true;
8447 }
8448
8449 if (request->relative_rssi_set &&
8450 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8451 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8452
8453 rssi_adjust = nla_data(
8454 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8455 request->rssi_adjust.band = rssi_adjust->band;
8456 request->rssi_adjust.delta = rssi_adjust->delta;
8457 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8458 err = -EINVAL;
8459 goto out_free;
8460 }
8461 }
8462
8463 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8464 if (err)
8465 goto out_free;
8466
8467 request->scan_start = jiffies;
8468
8469 return request;
8470
8471 out_free:
8472 kfree(request);
8473 return ERR_PTR(err);
8474 }
8475
8476 static int nl80211_start_sched_scan(struct sk_buff *skb,
8477 struct genl_info *info)
8478 {
8479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8480 struct net_device *dev = info->user_ptr[1];
8481 struct wireless_dev *wdev = dev->ieee80211_ptr;
8482 struct cfg80211_sched_scan_request *sched_scan_req;
8483 bool want_multi;
8484 int err;
8485
8486 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8487 return -EOPNOTSUPP;
8488
8489 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8490 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8491 if (err)
8492 return err;
8493
8494 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8495 info->attrs,
8496 rdev->wiphy.max_match_sets);
8497
8498 err = PTR_ERR_OR_ZERO(sched_scan_req);
8499 if (err)
8500 goto out_err;
8501
8502 /* leave request id zero for legacy request
8503 * or if driver does not support multi-scheduled scan
8504 */
8505 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8506 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8507
8508 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8509 if (err)
8510 goto out_free;
8511
8512 sched_scan_req->dev = dev;
8513 sched_scan_req->wiphy = &rdev->wiphy;
8514
8515 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8516 sched_scan_req->owner_nlportid = info->snd_portid;
8517
8518 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8519
8520 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8521 return 0;
8522
8523 out_free:
8524 kfree(sched_scan_req);
8525 out_err:
8526 return err;
8527 }
8528
8529 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8530 struct genl_info *info)
8531 {
8532 struct cfg80211_sched_scan_request *req;
8533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8534 u64 cookie;
8535
8536 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8537 return -EOPNOTSUPP;
8538
8539 if (info->attrs[NL80211_ATTR_COOKIE]) {
8540 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8541 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8542 }
8543
8544 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8545 struct cfg80211_sched_scan_request,
8546 list);
8547 if (!req || req->reqid ||
8548 (req->owner_nlportid &&
8549 req->owner_nlportid != info->snd_portid))
8550 return -ENOENT;
8551
8552 return cfg80211_stop_sched_scan_req(rdev, req, false);
8553 }
8554
8555 static int nl80211_start_radar_detection(struct sk_buff *skb,
8556 struct genl_info *info)
8557 {
8558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8559 struct net_device *dev = info->user_ptr[1];
8560 struct wireless_dev *wdev = dev->ieee80211_ptr;
8561 struct wiphy *wiphy = wdev->wiphy;
8562 struct cfg80211_chan_def chandef;
8563 enum nl80211_dfs_regions dfs_region;
8564 unsigned int cac_time_ms;
8565 int err;
8566
8567 dfs_region = reg_get_dfs_region(wiphy);
8568 if (dfs_region == NL80211_DFS_UNSET)
8569 return -EINVAL;
8570
8571 err = nl80211_parse_chandef(rdev, info, &chandef);
8572 if (err)
8573 return err;
8574
8575 if (netif_carrier_ok(dev))
8576 return -EBUSY;
8577
8578 if (wdev->cac_started)
8579 return -EBUSY;
8580
8581 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8582 if (err < 0)
8583 return err;
8584
8585 if (err == 0)
8586 return -EINVAL;
8587
8588 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8589 return -EINVAL;
8590
8591 /* CAC start is offloaded to HW and can't be started manually */
8592 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8593 return -EOPNOTSUPP;
8594
8595 if (!rdev->ops->start_radar_detection)
8596 return -EOPNOTSUPP;
8597
8598 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8599 if (WARN_ON(!cac_time_ms))
8600 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8601
8602 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8603 if (!err) {
8604 wdev->chandef = chandef;
8605 wdev->cac_started = true;
8606 wdev->cac_start_time = jiffies;
8607 wdev->cac_time_ms = cac_time_ms;
8608 }
8609 return err;
8610 }
8611
8612 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8613 struct genl_info *info)
8614 {
8615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8616 struct net_device *dev = info->user_ptr[1];
8617 struct wireless_dev *wdev = dev->ieee80211_ptr;
8618 struct wiphy *wiphy = wdev->wiphy;
8619 struct cfg80211_chan_def chandef;
8620 enum nl80211_dfs_regions dfs_region;
8621 int err;
8622
8623 dfs_region = reg_get_dfs_region(wiphy);
8624 if (dfs_region == NL80211_DFS_UNSET) {
8625 GENL_SET_ERR_MSG(info,
8626 "DFS Region is not set. Unexpected Radar indication");
8627 return -EINVAL;
8628 }
8629
8630 err = nl80211_parse_chandef(rdev, info, &chandef);
8631 if (err) {
8632 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8633 return err;
8634 }
8635
8636 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8637 if (err < 0) {
8638 GENL_SET_ERR_MSG(info, "chandef is invalid");
8639 return err;
8640 }
8641
8642 if (err == 0) {
8643 GENL_SET_ERR_MSG(info,
8644 "Unexpected Radar indication for chandef/iftype");
8645 return -EINVAL;
8646 }
8647
8648 /* Do not process this notification if radar is already detected
8649 * by kernel on this channel, and return success.
8650 */
8651 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8652 return 0;
8653
8654 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8655
8656 cfg80211_sched_dfs_chan_update(rdev);
8657
8658 rdev->radar_chandef = chandef;
8659
8660 /* Propagate this notification to other radios as well */
8661 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8662
8663 return 0;
8664 }
8665
8666 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8667 {
8668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8669 struct net_device *dev = info->user_ptr[1];
8670 struct wireless_dev *wdev = dev->ieee80211_ptr;
8671 struct cfg80211_csa_settings params;
8672 /* csa_attrs is defined static to avoid waste of stack size - this
8673 * function is called under RTNL lock, so this should not be a problem.
8674 */
8675 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8676 int err;
8677 bool need_new_beacon = false;
8678 bool need_handle_dfs_flag = true;
8679 int len, i;
8680 u32 cs_count;
8681
8682 if (!rdev->ops->channel_switch ||
8683 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8684 return -EOPNOTSUPP;
8685
8686 switch (dev->ieee80211_ptr->iftype) {
8687 case NL80211_IFTYPE_AP:
8688 case NL80211_IFTYPE_P2P_GO:
8689 need_new_beacon = true;
8690 /* For all modes except AP the handle_dfs flag needs to be
8691 * supplied to tell the kernel that userspace will handle radar
8692 * events when they happen. Otherwise a switch to a channel
8693 * requiring DFS will be rejected.
8694 */
8695 need_handle_dfs_flag = false;
8696
8697 /* useless if AP is not running */
8698 if (!wdev->beacon_interval)
8699 return -ENOTCONN;
8700 break;
8701 case NL80211_IFTYPE_ADHOC:
8702 if (!wdev->ssid_len)
8703 return -ENOTCONN;
8704 break;
8705 case NL80211_IFTYPE_MESH_POINT:
8706 if (!wdev->mesh_id_len)
8707 return -ENOTCONN;
8708 break;
8709 default:
8710 return -EOPNOTSUPP;
8711 }
8712
8713 memset(&params, 0, sizeof(params));
8714 params.beacon_csa.ftm_responder = -1;
8715
8716 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8717 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8718 return -EINVAL;
8719
8720 /* only important for AP, IBSS and mesh create IEs internally */
8721 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8722 return -EINVAL;
8723
8724 /* Even though the attribute is u32, the specification says
8725 * u8, so let's make sure we don't overflow.
8726 */
8727 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8728 if (cs_count > 255)
8729 return -EINVAL;
8730
8731 params.count = cs_count;
8732
8733 if (!need_new_beacon)
8734 goto skip_beacons;
8735
8736 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8737 if (err)
8738 return err;
8739
8740 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8741 info->attrs[NL80211_ATTR_CSA_IES],
8742 nl80211_policy, info->extack);
8743 if (err)
8744 return err;
8745
8746 err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8747 if (err)
8748 return err;
8749
8750 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8751 return -EINVAL;
8752
8753 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8754 if (!len || (len % sizeof(u16)))
8755 return -EINVAL;
8756
8757 params.n_counter_offsets_beacon = len / sizeof(u16);
8758 if (rdev->wiphy.max_num_csa_counters &&
8759 (params.n_counter_offsets_beacon >
8760 rdev->wiphy.max_num_csa_counters))
8761 return -EINVAL;
8762
8763 params.counter_offsets_beacon =
8764 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8765
8766 /* sanity checks - counters should fit and be the same */
8767 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8768 u16 offset = params.counter_offsets_beacon[i];
8769
8770 if (offset >= params.beacon_csa.tail_len)
8771 return -EINVAL;
8772
8773 if (params.beacon_csa.tail[offset] != params.count)
8774 return -EINVAL;
8775 }
8776
8777 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8778 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8779 if (!len || (len % sizeof(u16)))
8780 return -EINVAL;
8781
8782 params.n_counter_offsets_presp = len / sizeof(u16);
8783 if (rdev->wiphy.max_num_csa_counters &&
8784 (params.n_counter_offsets_presp >
8785 rdev->wiphy.max_num_csa_counters))
8786 return -EINVAL;
8787
8788 params.counter_offsets_presp =
8789 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8790
8791 /* sanity checks - counters should fit and be the same */
8792 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8793 u16 offset = params.counter_offsets_presp[i];
8794
8795 if (offset >= params.beacon_csa.probe_resp_len)
8796 return -EINVAL;
8797
8798 if (params.beacon_csa.probe_resp[offset] !=
8799 params.count)
8800 return -EINVAL;
8801 }
8802 }
8803
8804 skip_beacons:
8805 err = nl80211_parse_chandef(rdev, info, &params.chandef);
8806 if (err)
8807 return err;
8808
8809 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8810 wdev->iftype))
8811 return -EINVAL;
8812
8813 err = cfg80211_chandef_dfs_required(wdev->wiphy,
8814 &params.chandef,
8815 wdev->iftype);
8816 if (err < 0)
8817 return err;
8818
8819 if (err > 0) {
8820 params.radar_required = true;
8821 if (need_handle_dfs_flag &&
8822 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8823 return -EINVAL;
8824 }
8825 }
8826
8827 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8828 params.block_tx = true;
8829
8830 wdev_lock(wdev);
8831 err = rdev_channel_switch(rdev, dev, &params);
8832 wdev_unlock(wdev);
8833
8834 return err;
8835 }
8836
8837 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8838 u32 seq, int flags,
8839 struct cfg80211_registered_device *rdev,
8840 struct wireless_dev *wdev,
8841 struct cfg80211_internal_bss *intbss)
8842 {
8843 struct cfg80211_bss *res = &intbss->pub;
8844 const struct cfg80211_bss_ies *ies;
8845 void *hdr;
8846 struct nlattr *bss;
8847
8848 ASSERT_WDEV_LOCK(wdev);
8849
8850 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8851 NL80211_CMD_NEW_SCAN_RESULTS);
8852 if (!hdr)
8853 return -1;
8854
8855 genl_dump_check_consistent(cb, hdr);
8856
8857 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8858 goto nla_put_failure;
8859 if (wdev->netdev &&
8860 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8861 goto nla_put_failure;
8862 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8863 NL80211_ATTR_PAD))
8864 goto nla_put_failure;
8865
8866 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8867 if (!bss)
8868 goto nla_put_failure;
8869 if ((!is_zero_ether_addr(res->bssid) &&
8870 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8871 goto nla_put_failure;
8872
8873 rcu_read_lock();
8874 /* indicate whether we have probe response data or not */
8875 if (rcu_access_pointer(res->proberesp_ies) &&
8876 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8877 goto fail_unlock_rcu;
8878
8879 /* this pointer prefers to be pointed to probe response data
8880 * but is always valid
8881 */
8882 ies = rcu_dereference(res->ies);
8883 if (ies) {
8884 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8885 NL80211_BSS_PAD))
8886 goto fail_unlock_rcu;
8887 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8888 ies->len, ies->data))
8889 goto fail_unlock_rcu;
8890 }
8891
8892 /* and this pointer is always (unless driver didn't know) beacon data */
8893 ies = rcu_dereference(res->beacon_ies);
8894 if (ies && ies->from_beacon) {
8895 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8896 NL80211_BSS_PAD))
8897 goto fail_unlock_rcu;
8898 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8899 ies->len, ies->data))
8900 goto fail_unlock_rcu;
8901 }
8902 rcu_read_unlock();
8903
8904 if (res->beacon_interval &&
8905 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8906 goto nla_put_failure;
8907 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8908 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8909 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8910 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8911 jiffies_to_msecs(jiffies - intbss->ts)))
8912 goto nla_put_failure;
8913
8914 if (intbss->parent_tsf &&
8915 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8916 intbss->parent_tsf, NL80211_BSS_PAD) ||
8917 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8918 intbss->parent_bssid)))
8919 goto nla_put_failure;
8920
8921 if (intbss->ts_boottime &&
8922 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8923 intbss->ts_boottime, NL80211_BSS_PAD))
8924 goto nla_put_failure;
8925
8926 if (!nl80211_put_signal(msg, intbss->pub.chains,
8927 intbss->pub.chain_signal,
8928 NL80211_BSS_CHAIN_SIGNAL))
8929 goto nla_put_failure;
8930
8931 switch (rdev->wiphy.signal_type) {
8932 case CFG80211_SIGNAL_TYPE_MBM:
8933 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8934 goto nla_put_failure;
8935 break;
8936 case CFG80211_SIGNAL_TYPE_UNSPEC:
8937 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8938 goto nla_put_failure;
8939 break;
8940 default:
8941 break;
8942 }
8943
8944 switch (wdev->iftype) {
8945 case NL80211_IFTYPE_P2P_CLIENT:
8946 case NL80211_IFTYPE_STATION:
8947 if (intbss == wdev->current_bss &&
8948 nla_put_u32(msg, NL80211_BSS_STATUS,
8949 NL80211_BSS_STATUS_ASSOCIATED))
8950 goto nla_put_failure;
8951 break;
8952 case NL80211_IFTYPE_ADHOC:
8953 if (intbss == wdev->current_bss &&
8954 nla_put_u32(msg, NL80211_BSS_STATUS,
8955 NL80211_BSS_STATUS_IBSS_JOINED))
8956 goto nla_put_failure;
8957 break;
8958 default:
8959 break;
8960 }
8961
8962 nla_nest_end(msg, bss);
8963
8964 genlmsg_end(msg, hdr);
8965 return 0;
8966
8967 fail_unlock_rcu:
8968 rcu_read_unlock();
8969 nla_put_failure:
8970 genlmsg_cancel(msg, hdr);
8971 return -EMSGSIZE;
8972 }
8973
8974 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8975 {
8976 struct cfg80211_registered_device *rdev;
8977 struct cfg80211_internal_bss *scan;
8978 struct wireless_dev *wdev;
8979 int start = cb->args[2], idx = 0;
8980 int err;
8981
8982 rtnl_lock();
8983 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8984 if (err) {
8985 rtnl_unlock();
8986 return err;
8987 }
8988
8989 wdev_lock(wdev);
8990 spin_lock_bh(&rdev->bss_lock);
8991
8992 /*
8993 * dump_scan will be called multiple times to break up the scan results
8994 * into multiple messages. It is unlikely that any more bss-es will be
8995 * expired after the first call, so only call only call this on the
8996 * first dump_scan invocation.
8997 */
8998 if (start == 0)
8999 cfg80211_bss_expire(rdev);
9000
9001 cb->seq = rdev->bss_generation;
9002
9003 list_for_each_entry(scan, &rdev->bss_list, list) {
9004 if (++idx <= start)
9005 continue;
9006 if (nl80211_send_bss(skb, cb,
9007 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9008 rdev, wdev, scan) < 0) {
9009 idx--;
9010 break;
9011 }
9012 }
9013
9014 spin_unlock_bh(&rdev->bss_lock);
9015 wdev_unlock(wdev);
9016
9017 cb->args[2] = idx;
9018 rtnl_unlock();
9019
9020 return skb->len;
9021 }
9022
9023 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9024 int flags, struct net_device *dev,
9025 bool allow_radio_stats,
9026 struct survey_info *survey)
9027 {
9028 void *hdr;
9029 struct nlattr *infoattr;
9030
9031 /* skip radio stats if userspace didn't request them */
9032 if (!survey->channel && !allow_radio_stats)
9033 return 0;
9034
9035 hdr = nl80211hdr_put(msg, portid, seq, flags,
9036 NL80211_CMD_NEW_SURVEY_RESULTS);
9037 if (!hdr)
9038 return -ENOMEM;
9039
9040 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9041 goto nla_put_failure;
9042
9043 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9044 if (!infoattr)
9045 goto nla_put_failure;
9046
9047 if (survey->channel &&
9048 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9049 survey->channel->center_freq))
9050 goto nla_put_failure;
9051
9052 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9053 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9054 goto nla_put_failure;
9055 if ((survey->filled & SURVEY_INFO_IN_USE) &&
9056 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9057 goto nla_put_failure;
9058 if ((survey->filled & SURVEY_INFO_TIME) &&
9059 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9060 survey->time, NL80211_SURVEY_INFO_PAD))
9061 goto nla_put_failure;
9062 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9063 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9064 survey->time_busy, NL80211_SURVEY_INFO_PAD))
9065 goto nla_put_failure;
9066 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9067 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9068 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9069 goto nla_put_failure;
9070 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9071 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9072 survey->time_rx, NL80211_SURVEY_INFO_PAD))
9073 goto nla_put_failure;
9074 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9075 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9076 survey->time_tx, NL80211_SURVEY_INFO_PAD))
9077 goto nla_put_failure;
9078 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9079 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9080 survey->time_scan, NL80211_SURVEY_INFO_PAD))
9081 goto nla_put_failure;
9082 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9083 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9084 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9085 goto nla_put_failure;
9086
9087 nla_nest_end(msg, infoattr);
9088
9089 genlmsg_end(msg, hdr);
9090 return 0;
9091
9092 nla_put_failure:
9093 genlmsg_cancel(msg, hdr);
9094 return -EMSGSIZE;
9095 }
9096
9097 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9098 {
9099 struct nlattr **attrbuf;
9100 struct survey_info survey;
9101 struct cfg80211_registered_device *rdev;
9102 struct wireless_dev *wdev;
9103 int survey_idx = cb->args[2];
9104 int res;
9105 bool radio_stats;
9106
9107 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9108 if (!attrbuf)
9109 return -ENOMEM;
9110
9111 rtnl_lock();
9112 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9113 if (res)
9114 goto out_err;
9115
9116 /* prepare_wdev_dump parsed the attributes */
9117 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9118
9119 if (!wdev->netdev) {
9120 res = -EINVAL;
9121 goto out_err;
9122 }
9123
9124 if (!rdev->ops->dump_survey) {
9125 res = -EOPNOTSUPP;
9126 goto out_err;
9127 }
9128
9129 while (1) {
9130 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9131 if (res == -ENOENT)
9132 break;
9133 if (res)
9134 goto out_err;
9135
9136 /* don't send disabled channels, but do send non-channel data */
9137 if (survey.channel &&
9138 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9139 survey_idx++;
9140 continue;
9141 }
9142
9143 if (nl80211_send_survey(skb,
9144 NETLINK_CB(cb->skb).portid,
9145 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9146 wdev->netdev, radio_stats, &survey) < 0)
9147 goto out;
9148 survey_idx++;
9149 }
9150
9151 out:
9152 cb->args[2] = survey_idx;
9153 res = skb->len;
9154 out_err:
9155 kfree(attrbuf);
9156 rtnl_unlock();
9157 return res;
9158 }
9159
9160 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9161 {
9162 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9163 NL80211_WPA_VERSION_2 |
9164 NL80211_WPA_VERSION_3));
9165 }
9166
9167 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9168 {
9169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9170 struct net_device *dev = info->user_ptr[1];
9171 struct ieee80211_channel *chan;
9172 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9173 int err, ssid_len, ie_len = 0, auth_data_len = 0;
9174 enum nl80211_auth_type auth_type;
9175 struct key_parse key;
9176 bool local_state_change;
9177
9178 if (!info->attrs[NL80211_ATTR_MAC])
9179 return -EINVAL;
9180
9181 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9182 return -EINVAL;
9183
9184 if (!info->attrs[NL80211_ATTR_SSID])
9185 return -EINVAL;
9186
9187 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9188 return -EINVAL;
9189
9190 err = nl80211_parse_key(info, &key);
9191 if (err)
9192 return err;
9193
9194 if (key.idx >= 0) {
9195 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9196 return -EINVAL;
9197 if (!key.p.key || !key.p.key_len)
9198 return -EINVAL;
9199 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9200 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9201 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9202 key.p.key_len != WLAN_KEY_LEN_WEP104))
9203 return -EINVAL;
9204 if (key.idx > 3)
9205 return -EINVAL;
9206 } else {
9207 key.p.key_len = 0;
9208 key.p.key = NULL;
9209 }
9210
9211 if (key.idx >= 0) {
9212 int i;
9213 bool ok = false;
9214
9215 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9216 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9217 ok = true;
9218 break;
9219 }
9220 }
9221 if (!ok)
9222 return -EINVAL;
9223 }
9224
9225 if (!rdev->ops->auth)
9226 return -EOPNOTSUPP;
9227
9228 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9229 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9230 return -EOPNOTSUPP;
9231
9232 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9233 chan = nl80211_get_valid_chan(&rdev->wiphy,
9234 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9235 if (!chan)
9236 return -EINVAL;
9237
9238 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9239 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9240
9241 if (info->attrs[NL80211_ATTR_IE]) {
9242 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9243 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9244 }
9245
9246 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9247 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9248 return -EINVAL;
9249
9250 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9251 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9252 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9253 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9254 !info->attrs[NL80211_ATTR_AUTH_DATA])
9255 return -EINVAL;
9256
9257 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9258 if (auth_type != NL80211_AUTHTYPE_SAE &&
9259 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9260 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9261 auth_type != NL80211_AUTHTYPE_FILS_PK)
9262 return -EINVAL;
9263 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9264 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9265 /* need to include at least Auth Transaction and Status Code */
9266 if (auth_data_len < 4)
9267 return -EINVAL;
9268 }
9269
9270 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9271
9272 /*
9273 * Since we no longer track auth state, ignore
9274 * requests to only change local state.
9275 */
9276 if (local_state_change)
9277 return 0;
9278
9279 wdev_lock(dev->ieee80211_ptr);
9280 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9281 ssid, ssid_len, ie, ie_len,
9282 key.p.key, key.p.key_len, key.idx,
9283 auth_data, auth_data_len);
9284 wdev_unlock(dev->ieee80211_ptr);
9285 return err;
9286 }
9287
9288 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9289 struct genl_info *info)
9290 {
9291 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9292 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9293 return -EINVAL;
9294 }
9295
9296 if (!rdev->ops->tx_control_port ||
9297 !wiphy_ext_feature_isset(&rdev->wiphy,
9298 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9299 return -EOPNOTSUPP;
9300
9301 return 0;
9302 }
9303
9304 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9305 struct genl_info *info,
9306 struct cfg80211_crypto_settings *settings,
9307 int cipher_limit)
9308 {
9309 memset(settings, 0, sizeof(*settings));
9310
9311 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9312
9313 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9314 u16 proto;
9315
9316 proto = nla_get_u16(
9317 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9318 settings->control_port_ethertype = cpu_to_be16(proto);
9319 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9320 proto != ETH_P_PAE)
9321 return -EINVAL;
9322 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9323 settings->control_port_no_encrypt = true;
9324 } else
9325 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9326
9327 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9328 int r = validate_pae_over_nl80211(rdev, info);
9329
9330 if (r < 0)
9331 return r;
9332
9333 settings->control_port_over_nl80211 = true;
9334
9335 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9336 settings->control_port_no_preauth = true;
9337 }
9338
9339 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9340 void *data;
9341 int len, i;
9342
9343 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9344 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9345 settings->n_ciphers_pairwise = len / sizeof(u32);
9346
9347 if (len % sizeof(u32))
9348 return -EINVAL;
9349
9350 if (settings->n_ciphers_pairwise > cipher_limit)
9351 return -EINVAL;
9352
9353 memcpy(settings->ciphers_pairwise, data, len);
9354
9355 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9356 if (!cfg80211_supported_cipher_suite(
9357 &rdev->wiphy,
9358 settings->ciphers_pairwise[i]))
9359 return -EINVAL;
9360 }
9361
9362 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9363 settings->cipher_group =
9364 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9365 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9366 settings->cipher_group))
9367 return -EINVAL;
9368 }
9369
9370 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9371 settings->wpa_versions =
9372 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9373 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9374 return -EINVAL;
9375 }
9376
9377 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9378 void *data;
9379 int len;
9380
9381 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9382 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9383 settings->n_akm_suites = len / sizeof(u32);
9384
9385 if (len % sizeof(u32))
9386 return -EINVAL;
9387
9388 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9389 return -EINVAL;
9390
9391 memcpy(settings->akm_suites, data, len);
9392 }
9393
9394 if (info->attrs[NL80211_ATTR_PMK]) {
9395 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9396 return -EINVAL;
9397 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9398 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9399 return -EINVAL;
9400 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9401 }
9402
9403 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9404 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9405 NL80211_EXT_FEATURE_SAE_OFFLOAD))
9406 return -EINVAL;
9407 settings->sae_pwd =
9408 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9409 settings->sae_pwd_len =
9410 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9411 }
9412
9413 return 0;
9414 }
9415
9416 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9417 {
9418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9419 struct net_device *dev = info->user_ptr[1];
9420 struct ieee80211_channel *chan;
9421 struct cfg80211_assoc_request req = {};
9422 const u8 *bssid, *ssid;
9423 int err, ssid_len = 0;
9424
9425 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9426 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9427 return -EPERM;
9428
9429 if (!info->attrs[NL80211_ATTR_MAC] ||
9430 !info->attrs[NL80211_ATTR_SSID] ||
9431 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9432 return -EINVAL;
9433
9434 if (!rdev->ops->assoc)
9435 return -EOPNOTSUPP;
9436
9437 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9438 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9439 return -EOPNOTSUPP;
9440
9441 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9442
9443 chan = nl80211_get_valid_chan(&rdev->wiphy,
9444 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9445 if (!chan)
9446 return -EINVAL;
9447
9448 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9449 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9450
9451 if (info->attrs[NL80211_ATTR_IE]) {
9452 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9453 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9454 }
9455
9456 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9457 enum nl80211_mfp mfp =
9458 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9459 if (mfp == NL80211_MFP_REQUIRED)
9460 req.use_mfp = true;
9461 else if (mfp != NL80211_MFP_NO)
9462 return -EINVAL;
9463 }
9464
9465 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9466 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9467
9468 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9469 req.flags |= ASSOC_REQ_DISABLE_HT;
9470
9471 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9472 memcpy(&req.ht_capa_mask,
9473 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9474 sizeof(req.ht_capa_mask));
9475
9476 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9477 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9478 return -EINVAL;
9479 memcpy(&req.ht_capa,
9480 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9481 sizeof(req.ht_capa));
9482 }
9483
9484 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9485 req.flags |= ASSOC_REQ_DISABLE_VHT;
9486
9487 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9488 memcpy(&req.vht_capa_mask,
9489 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9490 sizeof(req.vht_capa_mask));
9491
9492 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9493 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9494 return -EINVAL;
9495 memcpy(&req.vht_capa,
9496 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9497 sizeof(req.vht_capa));
9498 }
9499
9500 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9501 if (!((rdev->wiphy.features &
9502 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9503 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9504 !wiphy_ext_feature_isset(&rdev->wiphy,
9505 NL80211_EXT_FEATURE_RRM))
9506 return -EINVAL;
9507 req.flags |= ASSOC_REQ_USE_RRM;
9508 }
9509
9510 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9511 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9512 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9513 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9514 return -EINVAL;
9515 req.fils_nonces =
9516 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9517 }
9518
9519 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9520 if (!err) {
9521 wdev_lock(dev->ieee80211_ptr);
9522
9523 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9524 ssid, ssid_len, &req);
9525
9526 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9527 dev->ieee80211_ptr->conn_owner_nlportid =
9528 info->snd_portid;
9529 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9530 bssid, ETH_ALEN);
9531 }
9532
9533 wdev_unlock(dev->ieee80211_ptr);
9534 }
9535
9536 return err;
9537 }
9538
9539 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9540 {
9541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9542 struct net_device *dev = info->user_ptr[1];
9543 const u8 *ie = NULL, *bssid;
9544 int ie_len = 0, err;
9545 u16 reason_code;
9546 bool local_state_change;
9547
9548 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9549 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9550 return -EPERM;
9551
9552 if (!info->attrs[NL80211_ATTR_MAC])
9553 return -EINVAL;
9554
9555 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9556 return -EINVAL;
9557
9558 if (!rdev->ops->deauth)
9559 return -EOPNOTSUPP;
9560
9561 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9562 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9563 return -EOPNOTSUPP;
9564
9565 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9566
9567 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9568 if (reason_code == 0) {
9569 /* Reason Code 0 is reserved */
9570 return -EINVAL;
9571 }
9572
9573 if (info->attrs[NL80211_ATTR_IE]) {
9574 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9575 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9576 }
9577
9578 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9579
9580 wdev_lock(dev->ieee80211_ptr);
9581 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9582 local_state_change);
9583 wdev_unlock(dev->ieee80211_ptr);
9584 return err;
9585 }
9586
9587 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9588 {
9589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9590 struct net_device *dev = info->user_ptr[1];
9591 const u8 *ie = NULL, *bssid;
9592 int ie_len = 0, err;
9593 u16 reason_code;
9594 bool local_state_change;
9595
9596 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9597 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9598 return -EPERM;
9599
9600 if (!info->attrs[NL80211_ATTR_MAC])
9601 return -EINVAL;
9602
9603 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9604 return -EINVAL;
9605
9606 if (!rdev->ops->disassoc)
9607 return -EOPNOTSUPP;
9608
9609 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9610 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9611 return -EOPNOTSUPP;
9612
9613 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9614
9615 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9616 if (reason_code == 0) {
9617 /* Reason Code 0 is reserved */
9618 return -EINVAL;
9619 }
9620
9621 if (info->attrs[NL80211_ATTR_IE]) {
9622 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9623 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9624 }
9625
9626 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9627
9628 wdev_lock(dev->ieee80211_ptr);
9629 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9630 local_state_change);
9631 wdev_unlock(dev->ieee80211_ptr);
9632 return err;
9633 }
9634
9635 static bool
9636 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9637 int mcast_rate[NUM_NL80211_BANDS],
9638 int rateval)
9639 {
9640 struct wiphy *wiphy = &rdev->wiphy;
9641 bool found = false;
9642 int band, i;
9643
9644 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9645 struct ieee80211_supported_band *sband;
9646
9647 sband = wiphy->bands[band];
9648 if (!sband)
9649 continue;
9650
9651 for (i = 0; i < sband->n_bitrates; i++) {
9652 if (sband->bitrates[i].bitrate == rateval) {
9653 mcast_rate[band] = i + 1;
9654 found = true;
9655 break;
9656 }
9657 }
9658 }
9659
9660 return found;
9661 }
9662
9663 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9664 {
9665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9666 struct net_device *dev = info->user_ptr[1];
9667 struct cfg80211_ibss_params ibss;
9668 struct wiphy *wiphy;
9669 struct cfg80211_cached_keys *connkeys = NULL;
9670 int err;
9671
9672 memset(&ibss, 0, sizeof(ibss));
9673
9674 if (!info->attrs[NL80211_ATTR_SSID] ||
9675 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9676 return -EINVAL;
9677
9678 ibss.beacon_interval = 100;
9679
9680 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9681 ibss.beacon_interval =
9682 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9683
9684 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9685 ibss.beacon_interval);
9686 if (err)
9687 return err;
9688
9689 if (!rdev->ops->join_ibss)
9690 return -EOPNOTSUPP;
9691
9692 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9693 return -EOPNOTSUPP;
9694
9695 wiphy = &rdev->wiphy;
9696
9697 if (info->attrs[NL80211_ATTR_MAC]) {
9698 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9699
9700 if (!is_valid_ether_addr(ibss.bssid))
9701 return -EINVAL;
9702 }
9703 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9704 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9705
9706 if (info->attrs[NL80211_ATTR_IE]) {
9707 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9708 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9709 }
9710
9711 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9712 if (err)
9713 return err;
9714
9715 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9716 NL80211_IFTYPE_ADHOC))
9717 return -EINVAL;
9718
9719 switch (ibss.chandef.width) {
9720 case NL80211_CHAN_WIDTH_5:
9721 case NL80211_CHAN_WIDTH_10:
9722 case NL80211_CHAN_WIDTH_20_NOHT:
9723 break;
9724 case NL80211_CHAN_WIDTH_20:
9725 case NL80211_CHAN_WIDTH_40:
9726 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9727 return -EINVAL;
9728 break;
9729 case NL80211_CHAN_WIDTH_80:
9730 case NL80211_CHAN_WIDTH_80P80:
9731 case NL80211_CHAN_WIDTH_160:
9732 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9733 return -EINVAL;
9734 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9735 NL80211_EXT_FEATURE_VHT_IBSS))
9736 return -EINVAL;
9737 break;
9738 default:
9739 return -EINVAL;
9740 }
9741
9742 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9743 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9744
9745 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9746 u8 *rates =
9747 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9748 int n_rates =
9749 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9750 struct ieee80211_supported_band *sband =
9751 wiphy->bands[ibss.chandef.chan->band];
9752
9753 err = ieee80211_get_ratemask(sband, rates, n_rates,
9754 &ibss.basic_rates);
9755 if (err)
9756 return err;
9757 }
9758
9759 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9760 memcpy(&ibss.ht_capa_mask,
9761 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9762 sizeof(ibss.ht_capa_mask));
9763
9764 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9765 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9766 return -EINVAL;
9767 memcpy(&ibss.ht_capa,
9768 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9769 sizeof(ibss.ht_capa));
9770 }
9771
9772 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9773 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9774 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9775 return -EINVAL;
9776
9777 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9778 bool no_ht = false;
9779
9780 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9781 if (IS_ERR(connkeys))
9782 return PTR_ERR(connkeys);
9783
9784 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9785 no_ht) {
9786 kzfree(connkeys);
9787 return -EINVAL;
9788 }
9789 }
9790
9791 ibss.control_port =
9792 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9793
9794 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9795 int r = validate_pae_over_nl80211(rdev, info);
9796
9797 if (r < 0) {
9798 kzfree(connkeys);
9799 return r;
9800 }
9801
9802 ibss.control_port_over_nl80211 = true;
9803 }
9804
9805 ibss.userspace_handles_dfs =
9806 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9807
9808 wdev_lock(dev->ieee80211_ptr);
9809 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9810 if (err)
9811 kzfree(connkeys);
9812 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9813 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9814 wdev_unlock(dev->ieee80211_ptr);
9815
9816 return err;
9817 }
9818
9819 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9820 {
9821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9822 struct net_device *dev = info->user_ptr[1];
9823
9824 if (!rdev->ops->leave_ibss)
9825 return -EOPNOTSUPP;
9826
9827 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9828 return -EOPNOTSUPP;
9829
9830 return cfg80211_leave_ibss(rdev, dev, false);
9831 }
9832
9833 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9834 {
9835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836 struct net_device *dev = info->user_ptr[1];
9837 int mcast_rate[NUM_NL80211_BANDS];
9838 u32 nla_rate;
9839 int err;
9840
9841 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9842 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9843 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9844 return -EOPNOTSUPP;
9845
9846 if (!rdev->ops->set_mcast_rate)
9847 return -EOPNOTSUPP;
9848
9849 memset(mcast_rate, 0, sizeof(mcast_rate));
9850
9851 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9852 return -EINVAL;
9853
9854 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9855 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9856 return -EINVAL;
9857
9858 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9859
9860 return err;
9861 }
9862
9863 static struct sk_buff *
9864 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9865 struct wireless_dev *wdev, int approxlen,
9866 u32 portid, u32 seq, enum nl80211_commands cmd,
9867 enum nl80211_attrs attr,
9868 const struct nl80211_vendor_cmd_info *info,
9869 gfp_t gfp)
9870 {
9871 struct sk_buff *skb;
9872 void *hdr;
9873 struct nlattr *data;
9874
9875 skb = nlmsg_new(approxlen + 100, gfp);
9876 if (!skb)
9877 return NULL;
9878
9879 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9880 if (!hdr) {
9881 kfree_skb(skb);
9882 return NULL;
9883 }
9884
9885 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9886 goto nla_put_failure;
9887
9888 if (info) {
9889 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9890 info->vendor_id))
9891 goto nla_put_failure;
9892 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9893 info->subcmd))
9894 goto nla_put_failure;
9895 }
9896
9897 if (wdev) {
9898 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9899 wdev_id(wdev), NL80211_ATTR_PAD))
9900 goto nla_put_failure;
9901 if (wdev->netdev &&
9902 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9903 wdev->netdev->ifindex))
9904 goto nla_put_failure;
9905 }
9906
9907 data = nla_nest_start_noflag(skb, attr);
9908 if (!data)
9909 goto nla_put_failure;
9910
9911 ((void **)skb->cb)[0] = rdev;
9912 ((void **)skb->cb)[1] = hdr;
9913 ((void **)skb->cb)[2] = data;
9914
9915 return skb;
9916
9917 nla_put_failure:
9918 kfree_skb(skb);
9919 return NULL;
9920 }
9921
9922 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9923 struct wireless_dev *wdev,
9924 enum nl80211_commands cmd,
9925 enum nl80211_attrs attr,
9926 unsigned int portid,
9927 int vendor_event_idx,
9928 int approxlen, gfp_t gfp)
9929 {
9930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9931 const struct nl80211_vendor_cmd_info *info;
9932
9933 switch (cmd) {
9934 case NL80211_CMD_TESTMODE:
9935 if (WARN_ON(vendor_event_idx != -1))
9936 return NULL;
9937 info = NULL;
9938 break;
9939 case NL80211_CMD_VENDOR:
9940 if (WARN_ON(vendor_event_idx < 0 ||
9941 vendor_event_idx >= wiphy->n_vendor_events))
9942 return NULL;
9943 info = &wiphy->vendor_events[vendor_event_idx];
9944 break;
9945 default:
9946 WARN_ON(1);
9947 return NULL;
9948 }
9949
9950 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9951 cmd, attr, info, gfp);
9952 }
9953 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9954
9955 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9956 {
9957 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9958 void *hdr = ((void **)skb->cb)[1];
9959 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9960 struct nlattr *data = ((void **)skb->cb)[2];
9961 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9962
9963 /* clear CB data for netlink core to own from now on */
9964 memset(skb->cb, 0, sizeof(skb->cb));
9965
9966 nla_nest_end(skb, data);
9967 genlmsg_end(skb, hdr);
9968
9969 if (nlhdr->nlmsg_pid) {
9970 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9971 nlhdr->nlmsg_pid);
9972 } else {
9973 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9974 mcgrp = NL80211_MCGRP_VENDOR;
9975
9976 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9977 skb, 0, mcgrp, gfp);
9978 }
9979 }
9980 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9981
9982 #ifdef CONFIG_NL80211_TESTMODE
9983 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9984 {
9985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9986 struct wireless_dev *wdev =
9987 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9988 int err;
9989
9990 if (!rdev->ops->testmode_cmd)
9991 return -EOPNOTSUPP;
9992
9993 if (IS_ERR(wdev)) {
9994 err = PTR_ERR(wdev);
9995 if (err != -EINVAL)
9996 return err;
9997 wdev = NULL;
9998 } else if (wdev->wiphy != &rdev->wiphy) {
9999 return -EINVAL;
10000 }
10001
10002 if (!info->attrs[NL80211_ATTR_TESTDATA])
10003 return -EINVAL;
10004
10005 rdev->cur_cmd_info = info;
10006 err = rdev_testmode_cmd(rdev, wdev,
10007 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10008 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10009 rdev->cur_cmd_info = NULL;
10010
10011 return err;
10012 }
10013
10014 static int nl80211_testmode_dump(struct sk_buff *skb,
10015 struct netlink_callback *cb)
10016 {
10017 struct cfg80211_registered_device *rdev;
10018 struct nlattr **attrbuf = NULL;
10019 int err;
10020 long phy_idx;
10021 void *data = NULL;
10022 int data_len = 0;
10023
10024 rtnl_lock();
10025
10026 if (cb->args[0]) {
10027 /*
10028 * 0 is a valid index, but not valid for args[0],
10029 * so we need to offset by 1.
10030 */
10031 phy_idx = cb->args[0] - 1;
10032
10033 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10034 if (!rdev) {
10035 err = -ENOENT;
10036 goto out_err;
10037 }
10038 } else {
10039 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10040 GFP_KERNEL);
10041 if (!attrbuf) {
10042 err = -ENOMEM;
10043 goto out_err;
10044 }
10045
10046 err = nlmsg_parse_deprecated(cb->nlh,
10047 GENL_HDRLEN + nl80211_fam.hdrsize,
10048 attrbuf, nl80211_fam.maxattr,
10049 nl80211_policy, NULL);
10050 if (err)
10051 goto out_err;
10052
10053 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10054 if (IS_ERR(rdev)) {
10055 err = PTR_ERR(rdev);
10056 goto out_err;
10057 }
10058 phy_idx = rdev->wiphy_idx;
10059
10060 if (attrbuf[NL80211_ATTR_TESTDATA])
10061 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10062 }
10063
10064 if (cb->args[1]) {
10065 data = nla_data((void *)cb->args[1]);
10066 data_len = nla_len((void *)cb->args[1]);
10067 }
10068
10069 if (!rdev->ops->testmode_dump) {
10070 err = -EOPNOTSUPP;
10071 goto out_err;
10072 }
10073
10074 while (1) {
10075 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10076 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10077 NL80211_CMD_TESTMODE);
10078 struct nlattr *tmdata;
10079
10080 if (!hdr)
10081 break;
10082
10083 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10084 genlmsg_cancel(skb, hdr);
10085 break;
10086 }
10087
10088 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10089 if (!tmdata) {
10090 genlmsg_cancel(skb, hdr);
10091 break;
10092 }
10093 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10094 nla_nest_end(skb, tmdata);
10095
10096 if (err == -ENOBUFS || err == -ENOENT) {
10097 genlmsg_cancel(skb, hdr);
10098 break;
10099 } else if (err) {
10100 genlmsg_cancel(skb, hdr);
10101 goto out_err;
10102 }
10103
10104 genlmsg_end(skb, hdr);
10105 }
10106
10107 err = skb->len;
10108 /* see above */
10109 cb->args[0] = phy_idx + 1;
10110 out_err:
10111 kfree(attrbuf);
10112 rtnl_unlock();
10113 return err;
10114 }
10115 #endif
10116
10117 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10118 {
10119 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10120 struct net_device *dev = info->user_ptr[1];
10121 struct cfg80211_connect_params connect;
10122 struct wiphy *wiphy;
10123 struct cfg80211_cached_keys *connkeys = NULL;
10124 int err;
10125
10126 memset(&connect, 0, sizeof(connect));
10127
10128 if (!info->attrs[NL80211_ATTR_SSID] ||
10129 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10130 return -EINVAL;
10131
10132 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10133 connect.auth_type =
10134 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10135 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10136 NL80211_CMD_CONNECT))
10137 return -EINVAL;
10138 } else
10139 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10140
10141 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10142
10143 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10144 !wiphy_ext_feature_isset(&rdev->wiphy,
10145 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10146 return -EINVAL;
10147 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10148
10149 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10150 NL80211_MAX_NR_CIPHER_SUITES);
10151 if (err)
10152 return err;
10153
10154 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10155 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10156 return -EOPNOTSUPP;
10157
10158 wiphy = &rdev->wiphy;
10159
10160 connect.bg_scan_period = -1;
10161 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10162 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10163 connect.bg_scan_period =
10164 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10165 }
10166
10167 if (info->attrs[NL80211_ATTR_MAC])
10168 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10169 else if (info->attrs[NL80211_ATTR_MAC_HINT])
10170 connect.bssid_hint =
10171 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10172 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10173 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10174
10175 if (info->attrs[NL80211_ATTR_IE]) {
10176 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10177 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10178 }
10179
10180 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10181 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10182 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10183 !wiphy_ext_feature_isset(&rdev->wiphy,
10184 NL80211_EXT_FEATURE_MFP_OPTIONAL))
10185 return -EOPNOTSUPP;
10186 } else {
10187 connect.mfp = NL80211_MFP_NO;
10188 }
10189
10190 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10191 connect.prev_bssid =
10192 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10193
10194 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10195 connect.channel = nl80211_get_valid_chan(
10196 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
10197 if (!connect.channel)
10198 return -EINVAL;
10199 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10200 connect.channel_hint = nl80211_get_valid_chan(
10201 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10202 if (!connect.channel_hint)
10203 return -EINVAL;
10204 }
10205
10206 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10207 connect.edmg.channels =
10208 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10209
10210 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10211 connect.edmg.bw_config =
10212 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10213 }
10214
10215 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10216 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10217 if (IS_ERR(connkeys))
10218 return PTR_ERR(connkeys);
10219 }
10220
10221 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10222 connect.flags |= ASSOC_REQ_DISABLE_HT;
10223
10224 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10225 memcpy(&connect.ht_capa_mask,
10226 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10227 sizeof(connect.ht_capa_mask));
10228
10229 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10230 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10231 kzfree(connkeys);
10232 return -EINVAL;
10233 }
10234 memcpy(&connect.ht_capa,
10235 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10236 sizeof(connect.ht_capa));
10237 }
10238
10239 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10240 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10241
10242 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10243 memcpy(&connect.vht_capa_mask,
10244 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10245 sizeof(connect.vht_capa_mask));
10246
10247 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10248 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10249 kzfree(connkeys);
10250 return -EINVAL;
10251 }
10252 memcpy(&connect.vht_capa,
10253 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10254 sizeof(connect.vht_capa));
10255 }
10256
10257 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10258 if (!((rdev->wiphy.features &
10259 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10260 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10261 !wiphy_ext_feature_isset(&rdev->wiphy,
10262 NL80211_EXT_FEATURE_RRM)) {
10263 kzfree(connkeys);
10264 return -EINVAL;
10265 }
10266 connect.flags |= ASSOC_REQ_USE_RRM;
10267 }
10268
10269 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10270 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10271 kzfree(connkeys);
10272 return -EOPNOTSUPP;
10273 }
10274
10275 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10276 /* bss selection makes no sense if bssid is set */
10277 if (connect.bssid) {
10278 kzfree(connkeys);
10279 return -EINVAL;
10280 }
10281
10282 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10283 wiphy, &connect.bss_select);
10284 if (err) {
10285 kzfree(connkeys);
10286 return err;
10287 }
10288 }
10289
10290 if (wiphy_ext_feature_isset(&rdev->wiphy,
10291 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10292 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10293 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10294 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10295 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10296 connect.fils_erp_username =
10297 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10298 connect.fils_erp_username_len =
10299 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10300 connect.fils_erp_realm =
10301 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10302 connect.fils_erp_realm_len =
10303 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10304 connect.fils_erp_next_seq_num =
10305 nla_get_u16(
10306 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10307 connect.fils_erp_rrk =
10308 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10309 connect.fils_erp_rrk_len =
10310 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10311 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10312 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10313 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10314 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10315 kzfree(connkeys);
10316 return -EINVAL;
10317 }
10318
10319 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10320 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10321 kzfree(connkeys);
10322 GENL_SET_ERR_MSG(info,
10323 "external auth requires connection ownership");
10324 return -EINVAL;
10325 }
10326 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10327 }
10328
10329 wdev_lock(dev->ieee80211_ptr);
10330
10331 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10332 connect.prev_bssid);
10333 if (err)
10334 kzfree(connkeys);
10335
10336 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10337 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10338 if (connect.bssid)
10339 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10340 connect.bssid, ETH_ALEN);
10341 else
10342 memset(dev->ieee80211_ptr->disconnect_bssid,
10343 0, ETH_ALEN);
10344 }
10345
10346 wdev_unlock(dev->ieee80211_ptr);
10347
10348 return err;
10349 }
10350
10351 static int nl80211_update_connect_params(struct sk_buff *skb,
10352 struct genl_info *info)
10353 {
10354 struct cfg80211_connect_params connect = {};
10355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10356 struct net_device *dev = info->user_ptr[1];
10357 struct wireless_dev *wdev = dev->ieee80211_ptr;
10358 bool fils_sk_offload;
10359 u32 auth_type;
10360 u32 changed = 0;
10361 int ret;
10362
10363 if (!rdev->ops->update_connect_params)
10364 return -EOPNOTSUPP;
10365
10366 if (info->attrs[NL80211_ATTR_IE]) {
10367 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10368 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10369 changed |= UPDATE_ASSOC_IES;
10370 }
10371
10372 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10373 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10374
10375 /*
10376 * when driver supports fils-sk offload all attributes must be
10377 * provided. So the else covers "fils-sk-not-all" and
10378 * "no-fils-sk-any".
10379 */
10380 if (fils_sk_offload &&
10381 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10382 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10383 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10384 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10385 connect.fils_erp_username =
10386 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10387 connect.fils_erp_username_len =
10388 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10389 connect.fils_erp_realm =
10390 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10391 connect.fils_erp_realm_len =
10392 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10393 connect.fils_erp_next_seq_num =
10394 nla_get_u16(
10395 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10396 connect.fils_erp_rrk =
10397 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10398 connect.fils_erp_rrk_len =
10399 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10400 changed |= UPDATE_FILS_ERP_INFO;
10401 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10402 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10403 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10404 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10405 return -EINVAL;
10406 }
10407
10408 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10409 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10410 if (!nl80211_valid_auth_type(rdev, auth_type,
10411 NL80211_CMD_CONNECT))
10412 return -EINVAL;
10413
10414 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10415 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10416 return -EINVAL;
10417
10418 connect.auth_type = auth_type;
10419 changed |= UPDATE_AUTH_TYPE;
10420 }
10421
10422 wdev_lock(dev->ieee80211_ptr);
10423 if (!wdev->current_bss)
10424 ret = -ENOLINK;
10425 else
10426 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10427 wdev_unlock(dev->ieee80211_ptr);
10428
10429 return ret;
10430 }
10431
10432 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10433 {
10434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10435 struct net_device *dev = info->user_ptr[1];
10436 u16 reason;
10437 int ret;
10438
10439 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10440 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10441 return -EPERM;
10442
10443 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10444 reason = WLAN_REASON_DEAUTH_LEAVING;
10445 else
10446 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10447
10448 if (reason == 0)
10449 return -EINVAL;
10450
10451 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10452 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10453 return -EOPNOTSUPP;
10454
10455 wdev_lock(dev->ieee80211_ptr);
10456 ret = cfg80211_disconnect(rdev, dev, reason, true);
10457 wdev_unlock(dev->ieee80211_ptr);
10458 return ret;
10459 }
10460
10461 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10462 {
10463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10464 struct net *net;
10465 int err;
10466
10467 if (info->attrs[NL80211_ATTR_PID]) {
10468 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10469
10470 net = get_net_ns_by_pid(pid);
10471 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10472 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10473
10474 net = get_net_ns_by_fd(fd);
10475 } else {
10476 return -EINVAL;
10477 }
10478
10479 if (IS_ERR(net))
10480 return PTR_ERR(net);
10481
10482 err = 0;
10483
10484 /* check if anything to do */
10485 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10486 err = cfg80211_switch_netns(rdev, net);
10487
10488 put_net(net);
10489 return err;
10490 }
10491
10492 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10493 {
10494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10495 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10496 struct cfg80211_pmksa *pmksa) = NULL;
10497 struct net_device *dev = info->user_ptr[1];
10498 struct cfg80211_pmksa pmksa;
10499
10500 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10501
10502 if (!info->attrs[NL80211_ATTR_PMKID])
10503 return -EINVAL;
10504
10505 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10506
10507 if (info->attrs[NL80211_ATTR_MAC]) {
10508 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10509 } else if (info->attrs[NL80211_ATTR_SSID] &&
10510 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10511 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10512 info->attrs[NL80211_ATTR_PMK])) {
10513 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10514 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10515 pmksa.cache_id =
10516 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10517 } else {
10518 return -EINVAL;
10519 }
10520 if (info->attrs[NL80211_ATTR_PMK]) {
10521 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10522 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10523 }
10524
10525 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10526 pmksa.pmk_lifetime =
10527 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10528
10529 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10530 pmksa.pmk_reauth_threshold =
10531 nla_get_u8(
10532 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10533
10534 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10535 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10536 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10537 wiphy_ext_feature_isset(&rdev->wiphy,
10538 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10539 return -EOPNOTSUPP;
10540
10541 switch (info->genlhdr->cmd) {
10542 case NL80211_CMD_SET_PMKSA:
10543 rdev_ops = rdev->ops->set_pmksa;
10544 break;
10545 case NL80211_CMD_DEL_PMKSA:
10546 rdev_ops = rdev->ops->del_pmksa;
10547 break;
10548 default:
10549 WARN_ON(1);
10550 break;
10551 }
10552
10553 if (!rdev_ops)
10554 return -EOPNOTSUPP;
10555
10556 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10557 }
10558
10559 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10560 {
10561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10562 struct net_device *dev = info->user_ptr[1];
10563
10564 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10565 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10566 return -EOPNOTSUPP;
10567
10568 if (!rdev->ops->flush_pmksa)
10569 return -EOPNOTSUPP;
10570
10571 return rdev_flush_pmksa(rdev, dev);
10572 }
10573
10574 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10575 {
10576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10577 struct net_device *dev = info->user_ptr[1];
10578 u8 action_code, dialog_token;
10579 u32 peer_capability = 0;
10580 u16 status_code;
10581 u8 *peer;
10582 bool initiator;
10583
10584 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10585 !rdev->ops->tdls_mgmt)
10586 return -EOPNOTSUPP;
10587
10588 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10589 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10590 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10591 !info->attrs[NL80211_ATTR_IE] ||
10592 !info->attrs[NL80211_ATTR_MAC])
10593 return -EINVAL;
10594
10595 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10596 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10597 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10598 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10599 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10600 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10601 peer_capability =
10602 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10603
10604 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10605 dialog_token, status_code, peer_capability,
10606 initiator,
10607 nla_data(info->attrs[NL80211_ATTR_IE]),
10608 nla_len(info->attrs[NL80211_ATTR_IE]));
10609 }
10610
10611 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10612 {
10613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10614 struct net_device *dev = info->user_ptr[1];
10615 enum nl80211_tdls_operation operation;
10616 u8 *peer;
10617
10618 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10619 !rdev->ops->tdls_oper)
10620 return -EOPNOTSUPP;
10621
10622 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10623 !info->attrs[NL80211_ATTR_MAC])
10624 return -EINVAL;
10625
10626 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10627 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10628
10629 return rdev_tdls_oper(rdev, dev, peer, operation);
10630 }
10631
10632 static int nl80211_remain_on_channel(struct sk_buff *skb,
10633 struct genl_info *info)
10634 {
10635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10636 struct wireless_dev *wdev = info->user_ptr[1];
10637 struct cfg80211_chan_def chandef;
10638 const struct cfg80211_chan_def *compat_chandef;
10639 struct sk_buff *msg;
10640 void *hdr;
10641 u64 cookie;
10642 u32 duration;
10643 int err;
10644
10645 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10646 !info->attrs[NL80211_ATTR_DURATION])
10647 return -EINVAL;
10648
10649 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10650
10651 if (!rdev->ops->remain_on_channel ||
10652 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10653 return -EOPNOTSUPP;
10654
10655 /*
10656 * We should be on that channel for at least a minimum amount of
10657 * time (10ms) but no longer than the driver supports.
10658 */
10659 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10660 duration > rdev->wiphy.max_remain_on_channel_duration)
10661 return -EINVAL;
10662
10663 err = nl80211_parse_chandef(rdev, info, &chandef);
10664 if (err)
10665 return err;
10666
10667 wdev_lock(wdev);
10668 if (!cfg80211_off_channel_oper_allowed(wdev) &&
10669 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10670 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10671 &chandef);
10672 if (compat_chandef != &chandef) {
10673 wdev_unlock(wdev);
10674 return -EBUSY;
10675 }
10676 }
10677 wdev_unlock(wdev);
10678
10679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10680 if (!msg)
10681 return -ENOMEM;
10682
10683 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10684 NL80211_CMD_REMAIN_ON_CHANNEL);
10685 if (!hdr) {
10686 err = -ENOBUFS;
10687 goto free_msg;
10688 }
10689
10690 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10691 duration, &cookie);
10692
10693 if (err)
10694 goto free_msg;
10695
10696 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10697 NL80211_ATTR_PAD))
10698 goto nla_put_failure;
10699
10700 genlmsg_end(msg, hdr);
10701
10702 return genlmsg_reply(msg, info);
10703
10704 nla_put_failure:
10705 err = -ENOBUFS;
10706 free_msg:
10707 nlmsg_free(msg);
10708 return err;
10709 }
10710
10711 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10712 struct genl_info *info)
10713 {
10714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10715 struct wireless_dev *wdev = info->user_ptr[1];
10716 u64 cookie;
10717
10718 if (!info->attrs[NL80211_ATTR_COOKIE])
10719 return -EINVAL;
10720
10721 if (!rdev->ops->cancel_remain_on_channel)
10722 return -EOPNOTSUPP;
10723
10724 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10725
10726 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10727 }
10728
10729 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10730 struct genl_info *info)
10731 {
10732 struct cfg80211_bitrate_mask mask;
10733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10734 struct net_device *dev = info->user_ptr[1];
10735 int err;
10736
10737 if (!rdev->ops->set_bitrate_mask)
10738 return -EOPNOTSUPP;
10739
10740 err = nl80211_parse_tx_bitrate_mask(info, &mask);
10741 if (err)
10742 return err;
10743
10744 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10745 }
10746
10747 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10748 {
10749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10750 struct wireless_dev *wdev = info->user_ptr[1];
10751 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10752
10753 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10754 return -EINVAL;
10755
10756 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10757 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10758
10759 switch (wdev->iftype) {
10760 case NL80211_IFTYPE_STATION:
10761 case NL80211_IFTYPE_ADHOC:
10762 case NL80211_IFTYPE_P2P_CLIENT:
10763 case NL80211_IFTYPE_AP:
10764 case NL80211_IFTYPE_AP_VLAN:
10765 case NL80211_IFTYPE_MESH_POINT:
10766 case NL80211_IFTYPE_P2P_GO:
10767 case NL80211_IFTYPE_P2P_DEVICE:
10768 break;
10769 case NL80211_IFTYPE_NAN:
10770 default:
10771 return -EOPNOTSUPP;
10772 }
10773
10774 /* not much point in registering if we can't reply */
10775 if (!rdev->ops->mgmt_tx)
10776 return -EOPNOTSUPP;
10777
10778 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10779 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10780 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10781 info->extack);
10782 }
10783
10784 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10785 {
10786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10787 struct wireless_dev *wdev = info->user_ptr[1];
10788 struct cfg80211_chan_def chandef;
10789 int err;
10790 void *hdr = NULL;
10791 u64 cookie;
10792 struct sk_buff *msg = NULL;
10793 struct cfg80211_mgmt_tx_params params = {
10794 .dont_wait_for_ack =
10795 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10796 };
10797
10798 if (!info->attrs[NL80211_ATTR_FRAME])
10799 return -EINVAL;
10800
10801 if (!rdev->ops->mgmt_tx)
10802 return -EOPNOTSUPP;
10803
10804 switch (wdev->iftype) {
10805 case NL80211_IFTYPE_P2P_DEVICE:
10806 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10807 return -EINVAL;
10808 case NL80211_IFTYPE_STATION:
10809 case NL80211_IFTYPE_ADHOC:
10810 case NL80211_IFTYPE_P2P_CLIENT:
10811 case NL80211_IFTYPE_AP:
10812 case NL80211_IFTYPE_AP_VLAN:
10813 case NL80211_IFTYPE_MESH_POINT:
10814 case NL80211_IFTYPE_P2P_GO:
10815 break;
10816 case NL80211_IFTYPE_NAN:
10817 default:
10818 return -EOPNOTSUPP;
10819 }
10820
10821 if (info->attrs[NL80211_ATTR_DURATION]) {
10822 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10823 return -EINVAL;
10824 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10825
10826 /*
10827 * We should wait on the channel for at least a minimum amount
10828 * of time (10ms) but no longer than the driver supports.
10829 */
10830 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10831 params.wait > rdev->wiphy.max_remain_on_channel_duration)
10832 return -EINVAL;
10833 }
10834
10835 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10836
10837 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10838 return -EINVAL;
10839
10840 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10841
10842 /* get the channel if any has been specified, otherwise pass NULL to
10843 * the driver. The latter will use the current one
10844 */
10845 chandef.chan = NULL;
10846 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10847 err = nl80211_parse_chandef(rdev, info, &chandef);
10848 if (err)
10849 return err;
10850 }
10851
10852 if (!chandef.chan && params.offchan)
10853 return -EINVAL;
10854
10855 wdev_lock(wdev);
10856 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10857 wdev_unlock(wdev);
10858 return -EBUSY;
10859 }
10860 wdev_unlock(wdev);
10861
10862 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10863 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10864
10865 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10866 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10867 int i;
10868
10869 if (len % sizeof(u16))
10870 return -EINVAL;
10871
10872 params.n_csa_offsets = len / sizeof(u16);
10873 params.csa_offsets =
10874 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10875
10876 /* check that all the offsets fit the frame */
10877 for (i = 0; i < params.n_csa_offsets; i++) {
10878 if (params.csa_offsets[i] >= params.len)
10879 return -EINVAL;
10880 }
10881 }
10882
10883 if (!params.dont_wait_for_ack) {
10884 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10885 if (!msg)
10886 return -ENOMEM;
10887
10888 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10889 NL80211_CMD_FRAME);
10890 if (!hdr) {
10891 err = -ENOBUFS;
10892 goto free_msg;
10893 }
10894 }
10895
10896 params.chan = chandef.chan;
10897 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10898 if (err)
10899 goto free_msg;
10900
10901 if (msg) {
10902 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10903 NL80211_ATTR_PAD))
10904 goto nla_put_failure;
10905
10906 genlmsg_end(msg, hdr);
10907 return genlmsg_reply(msg, info);
10908 }
10909
10910 return 0;
10911
10912 nla_put_failure:
10913 err = -ENOBUFS;
10914 free_msg:
10915 nlmsg_free(msg);
10916 return err;
10917 }
10918
10919 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10920 {
10921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10922 struct wireless_dev *wdev = info->user_ptr[1];
10923 u64 cookie;
10924
10925 if (!info->attrs[NL80211_ATTR_COOKIE])
10926 return -EINVAL;
10927
10928 if (!rdev->ops->mgmt_tx_cancel_wait)
10929 return -EOPNOTSUPP;
10930
10931 switch (wdev->iftype) {
10932 case NL80211_IFTYPE_STATION:
10933 case NL80211_IFTYPE_ADHOC:
10934 case NL80211_IFTYPE_P2P_CLIENT:
10935 case NL80211_IFTYPE_AP:
10936 case NL80211_IFTYPE_AP_VLAN:
10937 case NL80211_IFTYPE_P2P_GO:
10938 case NL80211_IFTYPE_P2P_DEVICE:
10939 break;
10940 case NL80211_IFTYPE_NAN:
10941 default:
10942 return -EOPNOTSUPP;
10943 }
10944
10945 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10946
10947 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10948 }
10949
10950 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10951 {
10952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10953 struct wireless_dev *wdev;
10954 struct net_device *dev = info->user_ptr[1];
10955 u8 ps_state;
10956 bool state;
10957 int err;
10958
10959 if (!info->attrs[NL80211_ATTR_PS_STATE])
10960 return -EINVAL;
10961
10962 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10963
10964 wdev = dev->ieee80211_ptr;
10965
10966 if (!rdev->ops->set_power_mgmt)
10967 return -EOPNOTSUPP;
10968
10969 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10970
10971 if (state == wdev->ps)
10972 return 0;
10973
10974 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10975 if (!err)
10976 wdev->ps = state;
10977 return err;
10978 }
10979
10980 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10981 {
10982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10983 enum nl80211_ps_state ps_state;
10984 struct wireless_dev *wdev;
10985 struct net_device *dev = info->user_ptr[1];
10986 struct sk_buff *msg;
10987 void *hdr;
10988 int err;
10989
10990 wdev = dev->ieee80211_ptr;
10991
10992 if (!rdev->ops->set_power_mgmt)
10993 return -EOPNOTSUPP;
10994
10995 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10996 if (!msg)
10997 return -ENOMEM;
10998
10999 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11000 NL80211_CMD_GET_POWER_SAVE);
11001 if (!hdr) {
11002 err = -ENOBUFS;
11003 goto free_msg;
11004 }
11005
11006 if (wdev->ps)
11007 ps_state = NL80211_PS_ENABLED;
11008 else
11009 ps_state = NL80211_PS_DISABLED;
11010
11011 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11012 goto nla_put_failure;
11013
11014 genlmsg_end(msg, hdr);
11015 return genlmsg_reply(msg, info);
11016
11017 nla_put_failure:
11018 err = -ENOBUFS;
11019 free_msg:
11020 nlmsg_free(msg);
11021 return err;
11022 }
11023
11024 static const struct nla_policy
11025 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11026 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11027 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11028 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11029 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11030 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11031 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11032 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11033 };
11034
11035 static int nl80211_set_cqm_txe(struct genl_info *info,
11036 u32 rate, u32 pkts, u32 intvl)
11037 {
11038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11039 struct net_device *dev = info->user_ptr[1];
11040 struct wireless_dev *wdev = dev->ieee80211_ptr;
11041
11042 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11043 return -EINVAL;
11044
11045 if (!rdev->ops->set_cqm_txe_config)
11046 return -EOPNOTSUPP;
11047
11048 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11049 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11050 return -EOPNOTSUPP;
11051
11052 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11053 }
11054
11055 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11056 struct net_device *dev)
11057 {
11058 struct wireless_dev *wdev = dev->ieee80211_ptr;
11059 s32 last, low, high;
11060 u32 hyst;
11061 int i, n, low_index;
11062 int err;
11063
11064 /* RSSI reporting disabled? */
11065 if (!wdev->cqm_config)
11066 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11067
11068 /*
11069 * Obtain current RSSI value if possible, if not and no RSSI threshold
11070 * event has been received yet, we should receive an event after a
11071 * connection is established and enough beacons received to calculate
11072 * the average.
11073 */
11074 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11075 rdev->ops->get_station) {
11076 struct station_info sinfo = {};
11077 u8 *mac_addr;
11078
11079 mac_addr = wdev->current_bss->pub.bssid;
11080
11081 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11082 if (err)
11083 return err;
11084
11085 cfg80211_sinfo_release_content(&sinfo);
11086 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11087 wdev->cqm_config->last_rssi_event_value =
11088 (s8) sinfo.rx_beacon_signal_avg;
11089 }
11090
11091 last = wdev->cqm_config->last_rssi_event_value;
11092 hyst = wdev->cqm_config->rssi_hyst;
11093 n = wdev->cqm_config->n_rssi_thresholds;
11094
11095 for (i = 0; i < n; i++) {
11096 i = array_index_nospec(i, n);
11097 if (last < wdev->cqm_config->rssi_thresholds[i])
11098 break;
11099 }
11100
11101 low_index = i - 1;
11102 if (low_index >= 0) {
11103 low_index = array_index_nospec(low_index, n);
11104 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11105 } else {
11106 low = S32_MIN;
11107 }
11108 if (i < n) {
11109 i = array_index_nospec(i, n);
11110 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11111 } else {
11112 high = S32_MAX;
11113 }
11114
11115 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11116 }
11117
11118 static int nl80211_set_cqm_rssi(struct genl_info *info,
11119 const s32 *thresholds, int n_thresholds,
11120 u32 hysteresis)
11121 {
11122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11123 struct net_device *dev = info->user_ptr[1];
11124 struct wireless_dev *wdev = dev->ieee80211_ptr;
11125 int i, err;
11126 s32 prev = S32_MIN;
11127
11128 /* Check all values negative and sorted */
11129 for (i = 0; i < n_thresholds; i++) {
11130 if (thresholds[i] > 0 || thresholds[i] <= prev)
11131 return -EINVAL;
11132
11133 prev = thresholds[i];
11134 }
11135
11136 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11137 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11138 return -EOPNOTSUPP;
11139
11140 wdev_lock(wdev);
11141 cfg80211_cqm_config_free(wdev);
11142 wdev_unlock(wdev);
11143
11144 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11145 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11146 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11147
11148 return rdev_set_cqm_rssi_config(rdev, dev,
11149 thresholds[0], hysteresis);
11150 }
11151
11152 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11153 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11154 return -EOPNOTSUPP;
11155
11156 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11157 n_thresholds = 0;
11158
11159 wdev_lock(wdev);
11160 if (n_thresholds) {
11161 struct cfg80211_cqm_config *cqm_config;
11162
11163 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11164 n_thresholds * sizeof(s32), GFP_KERNEL);
11165 if (!cqm_config) {
11166 err = -ENOMEM;
11167 goto unlock;
11168 }
11169
11170 cqm_config->rssi_hyst = hysteresis;
11171 cqm_config->n_rssi_thresholds = n_thresholds;
11172 memcpy(cqm_config->rssi_thresholds, thresholds,
11173 n_thresholds * sizeof(s32));
11174
11175 wdev->cqm_config = cqm_config;
11176 }
11177
11178 err = cfg80211_cqm_rssi_update(rdev, dev);
11179
11180 unlock:
11181 wdev_unlock(wdev);
11182
11183 return err;
11184 }
11185
11186 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11187 {
11188 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11189 struct nlattr *cqm;
11190 int err;
11191
11192 cqm = info->attrs[NL80211_ATTR_CQM];
11193 if (!cqm)
11194 return -EINVAL;
11195
11196 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11197 nl80211_attr_cqm_policy,
11198 info->extack);
11199 if (err)
11200 return err;
11201
11202 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11203 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11204 const s32 *thresholds =
11205 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11206 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11207 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11208
11209 if (len % 4)
11210 return -EINVAL;
11211
11212 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11213 hysteresis);
11214 }
11215
11216 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11217 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11218 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11219 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11220 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11221 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11222
11223 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11224 }
11225
11226 return -EINVAL;
11227 }
11228
11229 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11230 {
11231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11232 struct net_device *dev = info->user_ptr[1];
11233 struct ocb_setup setup = {};
11234 int err;
11235
11236 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11237 if (err)
11238 return err;
11239
11240 return cfg80211_join_ocb(rdev, dev, &setup);
11241 }
11242
11243 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11244 {
11245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11246 struct net_device *dev = info->user_ptr[1];
11247
11248 return cfg80211_leave_ocb(rdev, dev);
11249 }
11250
11251 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11252 {
11253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11254 struct net_device *dev = info->user_ptr[1];
11255 struct mesh_config cfg;
11256 struct mesh_setup setup;
11257 int err;
11258
11259 /* start with default */
11260 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11261 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11262
11263 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11264 /* and parse parameters if given */
11265 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11266 if (err)
11267 return err;
11268 }
11269
11270 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11271 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11272 return -EINVAL;
11273
11274 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11275 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11276
11277 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11278 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11279 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11280 return -EINVAL;
11281
11282 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11283 setup.beacon_interval =
11284 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11285
11286 err = cfg80211_validate_beacon_int(rdev,
11287 NL80211_IFTYPE_MESH_POINT,
11288 setup.beacon_interval);
11289 if (err)
11290 return err;
11291 }
11292
11293 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11294 setup.dtim_period =
11295 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11296 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11297 return -EINVAL;
11298 }
11299
11300 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11301 /* parse additional setup parameters if given */
11302 err = nl80211_parse_mesh_setup(info, &setup);
11303 if (err)
11304 return err;
11305 }
11306
11307 if (setup.user_mpm)
11308 cfg.auto_open_plinks = false;
11309
11310 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11311 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11312 if (err)
11313 return err;
11314 } else {
11315 /* __cfg80211_join_mesh() will sort it out */
11316 setup.chandef.chan = NULL;
11317 }
11318
11319 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11320 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11321 int n_rates =
11322 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11323 struct ieee80211_supported_band *sband;
11324
11325 if (!setup.chandef.chan)
11326 return -EINVAL;
11327
11328 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11329
11330 err = ieee80211_get_ratemask(sband, rates, n_rates,
11331 &setup.basic_rates);
11332 if (err)
11333 return err;
11334 }
11335
11336 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11337 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11338 if (err)
11339 return err;
11340
11341 if (!setup.chandef.chan)
11342 return -EINVAL;
11343
11344 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11345 &setup.beacon_rate);
11346 if (err)
11347 return err;
11348 }
11349
11350 setup.userspace_handles_dfs =
11351 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11352
11353 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11354 int r = validate_pae_over_nl80211(rdev, info);
11355
11356 if (r < 0)
11357 return r;
11358
11359 setup.control_port_over_nl80211 = true;
11360 }
11361
11362 wdev_lock(dev->ieee80211_ptr);
11363 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11364 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11365 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11366 wdev_unlock(dev->ieee80211_ptr);
11367
11368 return err;
11369 }
11370
11371 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11372 {
11373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11374 struct net_device *dev = info->user_ptr[1];
11375
11376 return cfg80211_leave_mesh(rdev, dev);
11377 }
11378
11379 #ifdef CONFIG_PM
11380 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11381 struct cfg80211_registered_device *rdev)
11382 {
11383 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11384 struct nlattr *nl_pats, *nl_pat;
11385 int i, pat_len;
11386
11387 if (!wowlan->n_patterns)
11388 return 0;
11389
11390 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11391 if (!nl_pats)
11392 return -ENOBUFS;
11393
11394 for (i = 0; i < wowlan->n_patterns; i++) {
11395 nl_pat = nla_nest_start_noflag(msg, i + 1);
11396 if (!nl_pat)
11397 return -ENOBUFS;
11398 pat_len = wowlan->patterns[i].pattern_len;
11399 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11400 wowlan->patterns[i].mask) ||
11401 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11402 wowlan->patterns[i].pattern) ||
11403 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11404 wowlan->patterns[i].pkt_offset))
11405 return -ENOBUFS;
11406 nla_nest_end(msg, nl_pat);
11407 }
11408 nla_nest_end(msg, nl_pats);
11409
11410 return 0;
11411 }
11412
11413 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11414 struct cfg80211_wowlan_tcp *tcp)
11415 {
11416 struct nlattr *nl_tcp;
11417
11418 if (!tcp)
11419 return 0;
11420
11421 nl_tcp = nla_nest_start_noflag(msg,
11422 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11423 if (!nl_tcp)
11424 return -ENOBUFS;
11425
11426 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11427 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11428 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11429 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11430 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11431 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11432 tcp->payload_len, tcp->payload) ||
11433 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11434 tcp->data_interval) ||
11435 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11436 tcp->wake_len, tcp->wake_data) ||
11437 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11438 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11439 return -ENOBUFS;
11440
11441 if (tcp->payload_seq.len &&
11442 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11443 sizeof(tcp->payload_seq), &tcp->payload_seq))
11444 return -ENOBUFS;
11445
11446 if (tcp->payload_tok.len &&
11447 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11448 sizeof(tcp->payload_tok) + tcp->tokens_size,
11449 &tcp->payload_tok))
11450 return -ENOBUFS;
11451
11452 nla_nest_end(msg, nl_tcp);
11453
11454 return 0;
11455 }
11456
11457 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11458 struct cfg80211_sched_scan_request *req)
11459 {
11460 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11461 int i;
11462
11463 if (!req)
11464 return 0;
11465
11466 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11467 if (!nd)
11468 return -ENOBUFS;
11469
11470 if (req->n_scan_plans == 1 &&
11471 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11472 req->scan_plans[0].interval * 1000))
11473 return -ENOBUFS;
11474
11475 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11476 return -ENOBUFS;
11477
11478 if (req->relative_rssi_set) {
11479 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11480
11481 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11482 req->relative_rssi))
11483 return -ENOBUFS;
11484
11485 rssi_adjust.band = req->rssi_adjust.band;
11486 rssi_adjust.delta = req->rssi_adjust.delta;
11487 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11488 sizeof(rssi_adjust), &rssi_adjust))
11489 return -ENOBUFS;
11490 }
11491
11492 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11493 if (!freqs)
11494 return -ENOBUFS;
11495
11496 for (i = 0; i < req->n_channels; i++) {
11497 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11498 return -ENOBUFS;
11499 }
11500
11501 nla_nest_end(msg, freqs);
11502
11503 if (req->n_match_sets) {
11504 matches = nla_nest_start_noflag(msg,
11505 NL80211_ATTR_SCHED_SCAN_MATCH);
11506 if (!matches)
11507 return -ENOBUFS;
11508
11509 for (i = 0; i < req->n_match_sets; i++) {
11510 match = nla_nest_start_noflag(msg, i);
11511 if (!match)
11512 return -ENOBUFS;
11513
11514 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11515 req->match_sets[i].ssid.ssid_len,
11516 req->match_sets[i].ssid.ssid))
11517 return -ENOBUFS;
11518 nla_nest_end(msg, match);
11519 }
11520 nla_nest_end(msg, matches);
11521 }
11522
11523 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11524 if (!scan_plans)
11525 return -ENOBUFS;
11526
11527 for (i = 0; i < req->n_scan_plans; i++) {
11528 scan_plan = nla_nest_start_noflag(msg, i + 1);
11529 if (!scan_plan)
11530 return -ENOBUFS;
11531
11532 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11533 req->scan_plans[i].interval) ||
11534 (req->scan_plans[i].iterations &&
11535 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11536 req->scan_plans[i].iterations)))
11537 return -ENOBUFS;
11538 nla_nest_end(msg, scan_plan);
11539 }
11540 nla_nest_end(msg, scan_plans);
11541
11542 nla_nest_end(msg, nd);
11543
11544 return 0;
11545 }
11546
11547 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11548 {
11549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11550 struct sk_buff *msg;
11551 void *hdr;
11552 u32 size = NLMSG_DEFAULT_SIZE;
11553
11554 if (!rdev->wiphy.wowlan)
11555 return -EOPNOTSUPP;
11556
11557 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11558 /* adjust size to have room for all the data */
11559 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11560 rdev->wiphy.wowlan_config->tcp->payload_len +
11561 rdev->wiphy.wowlan_config->tcp->wake_len +
11562 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11563 }
11564
11565 msg = nlmsg_new(size, GFP_KERNEL);
11566 if (!msg)
11567 return -ENOMEM;
11568
11569 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11570 NL80211_CMD_GET_WOWLAN);
11571 if (!hdr)
11572 goto nla_put_failure;
11573
11574 if (rdev->wiphy.wowlan_config) {
11575 struct nlattr *nl_wowlan;
11576
11577 nl_wowlan = nla_nest_start_noflag(msg,
11578 NL80211_ATTR_WOWLAN_TRIGGERS);
11579 if (!nl_wowlan)
11580 goto nla_put_failure;
11581
11582 if ((rdev->wiphy.wowlan_config->any &&
11583 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11584 (rdev->wiphy.wowlan_config->disconnect &&
11585 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11586 (rdev->wiphy.wowlan_config->magic_pkt &&
11587 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11588 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11590 (rdev->wiphy.wowlan_config->eap_identity_req &&
11591 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11592 (rdev->wiphy.wowlan_config->four_way_handshake &&
11593 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11594 (rdev->wiphy.wowlan_config->rfkill_release &&
11595 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11596 goto nla_put_failure;
11597
11598 if (nl80211_send_wowlan_patterns(msg, rdev))
11599 goto nla_put_failure;
11600
11601 if (nl80211_send_wowlan_tcp(msg,
11602 rdev->wiphy.wowlan_config->tcp))
11603 goto nla_put_failure;
11604
11605 if (nl80211_send_wowlan_nd(
11606 msg,
11607 rdev->wiphy.wowlan_config->nd_config))
11608 goto nla_put_failure;
11609
11610 nla_nest_end(msg, nl_wowlan);
11611 }
11612
11613 genlmsg_end(msg, hdr);
11614 return genlmsg_reply(msg, info);
11615
11616 nla_put_failure:
11617 nlmsg_free(msg);
11618 return -ENOBUFS;
11619 }
11620
11621 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11622 struct nlattr *attr,
11623 struct cfg80211_wowlan *trig)
11624 {
11625 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11626 struct cfg80211_wowlan_tcp *cfg;
11627 struct nl80211_wowlan_tcp_data_token *tok = NULL;
11628 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11629 u32 size;
11630 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11631 int err, port;
11632
11633 if (!rdev->wiphy.wowlan->tcp)
11634 return -EINVAL;
11635
11636 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11637 nl80211_wowlan_tcp_policy, NULL);
11638 if (err)
11639 return err;
11640
11641 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11642 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11643 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11644 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11645 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11646 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11647 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11648 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11649 return -EINVAL;
11650
11651 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11652 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11653 return -EINVAL;
11654
11655 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11656 rdev->wiphy.wowlan->tcp->data_interval_max ||
11657 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11658 return -EINVAL;
11659
11660 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11661 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11662 return -EINVAL;
11663
11664 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11665 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11666 return -EINVAL;
11667
11668 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11669 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11670
11671 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11672 tokens_size = tokln - sizeof(*tok);
11673
11674 if (!tok->len || tokens_size % tok->len)
11675 return -EINVAL;
11676 if (!rdev->wiphy.wowlan->tcp->tok)
11677 return -EINVAL;
11678 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11679 return -EINVAL;
11680 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11681 return -EINVAL;
11682 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11683 return -EINVAL;
11684 if (tok->offset + tok->len > data_size)
11685 return -EINVAL;
11686 }
11687
11688 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11689 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11690 if (!rdev->wiphy.wowlan->tcp->seq)
11691 return -EINVAL;
11692 if (seq->len == 0 || seq->len > 4)
11693 return -EINVAL;
11694 if (seq->len + seq->offset > data_size)
11695 return -EINVAL;
11696 }
11697
11698 size = sizeof(*cfg);
11699 size += data_size;
11700 size += wake_size + wake_mask_size;
11701 size += tokens_size;
11702
11703 cfg = kzalloc(size, GFP_KERNEL);
11704 if (!cfg)
11705 return -ENOMEM;
11706 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11707 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11708 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11709 ETH_ALEN);
11710 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11711 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11712 else
11713 port = 0;
11714 #ifdef CONFIG_INET
11715 /* allocate a socket and port for it and use it */
11716 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11717 IPPROTO_TCP, &cfg->sock, 1);
11718 if (err) {
11719 kfree(cfg);
11720 return err;
11721 }
11722 if (inet_csk_get_port(cfg->sock->sk, port)) {
11723 sock_release(cfg->sock);
11724 kfree(cfg);
11725 return -EADDRINUSE;
11726 }
11727 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11728 #else
11729 if (!port) {
11730 kfree(cfg);
11731 return -EINVAL;
11732 }
11733 cfg->src_port = port;
11734 #endif
11735
11736 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11737 cfg->payload_len = data_size;
11738 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11739 memcpy((void *)cfg->payload,
11740 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11741 data_size);
11742 if (seq)
11743 cfg->payload_seq = *seq;
11744 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11745 cfg->wake_len = wake_size;
11746 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11747 memcpy((void *)cfg->wake_data,
11748 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11749 wake_size);
11750 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11751 data_size + wake_size;
11752 memcpy((void *)cfg->wake_mask,
11753 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11754 wake_mask_size);
11755 if (tok) {
11756 cfg->tokens_size = tokens_size;
11757 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11758 }
11759
11760 trig->tcp = cfg;
11761
11762 return 0;
11763 }
11764
11765 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11766 const struct wiphy_wowlan_support *wowlan,
11767 struct nlattr *attr,
11768 struct cfg80211_wowlan *trig)
11769 {
11770 struct nlattr **tb;
11771 int err;
11772
11773 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11774 if (!tb)
11775 return -ENOMEM;
11776
11777 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11778 err = -EOPNOTSUPP;
11779 goto out;
11780 }
11781
11782 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11783 nl80211_policy, NULL);
11784 if (err)
11785 goto out;
11786
11787 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11788 wowlan->max_nd_match_sets);
11789 err = PTR_ERR_OR_ZERO(trig->nd_config);
11790 if (err)
11791 trig->nd_config = NULL;
11792
11793 out:
11794 kfree(tb);
11795 return err;
11796 }
11797
11798 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11799 {
11800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11801 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11802 struct cfg80211_wowlan new_triggers = {};
11803 struct cfg80211_wowlan *ntrig;
11804 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11805 int err, i;
11806 bool prev_enabled = rdev->wiphy.wowlan_config;
11807 bool regular = false;
11808
11809 if (!wowlan)
11810 return -EOPNOTSUPP;
11811
11812 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11813 cfg80211_rdev_free_wowlan(rdev);
11814 rdev->wiphy.wowlan_config = NULL;
11815 goto set_wakeup;
11816 }
11817
11818 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11819 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11820 nl80211_wowlan_policy, info->extack);
11821 if (err)
11822 return err;
11823
11824 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11825 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11826 return -EINVAL;
11827 new_triggers.any = true;
11828 }
11829
11830 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11831 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11832 return -EINVAL;
11833 new_triggers.disconnect = true;
11834 regular = true;
11835 }
11836
11837 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11838 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11839 return -EINVAL;
11840 new_triggers.magic_pkt = true;
11841 regular = true;
11842 }
11843
11844 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11845 return -EINVAL;
11846
11847 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11848 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11849 return -EINVAL;
11850 new_triggers.gtk_rekey_failure = true;
11851 regular = true;
11852 }
11853
11854 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11855 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11856 return -EINVAL;
11857 new_triggers.eap_identity_req = true;
11858 regular = true;
11859 }
11860
11861 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11862 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11863 return -EINVAL;
11864 new_triggers.four_way_handshake = true;
11865 regular = true;
11866 }
11867
11868 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11869 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11870 return -EINVAL;
11871 new_triggers.rfkill_release = true;
11872 regular = true;
11873 }
11874
11875 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11876 struct nlattr *pat;
11877 int n_patterns = 0;
11878 int rem, pat_len, mask_len, pkt_offset;
11879 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11880
11881 regular = true;
11882
11883 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11884 rem)
11885 n_patterns++;
11886 if (n_patterns > wowlan->n_patterns)
11887 return -EINVAL;
11888
11889 new_triggers.patterns = kcalloc(n_patterns,
11890 sizeof(new_triggers.patterns[0]),
11891 GFP_KERNEL);
11892 if (!new_triggers.patterns)
11893 return -ENOMEM;
11894
11895 new_triggers.n_patterns = n_patterns;
11896 i = 0;
11897
11898 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11899 rem) {
11900 u8 *mask_pat;
11901
11902 err = nla_parse_nested_deprecated(pat_tb,
11903 MAX_NL80211_PKTPAT,
11904 pat,
11905 nl80211_packet_pattern_policy,
11906 info->extack);
11907 if (err)
11908 goto error;
11909
11910 err = -EINVAL;
11911 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11912 !pat_tb[NL80211_PKTPAT_PATTERN])
11913 goto error;
11914 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11915 mask_len = DIV_ROUND_UP(pat_len, 8);
11916 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11917 goto error;
11918 if (pat_len > wowlan->pattern_max_len ||
11919 pat_len < wowlan->pattern_min_len)
11920 goto error;
11921
11922 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11923 pkt_offset = 0;
11924 else
11925 pkt_offset = nla_get_u32(
11926 pat_tb[NL80211_PKTPAT_OFFSET]);
11927 if (pkt_offset > wowlan->max_pkt_offset)
11928 goto error;
11929 new_triggers.patterns[i].pkt_offset = pkt_offset;
11930
11931 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11932 if (!mask_pat) {
11933 err = -ENOMEM;
11934 goto error;
11935 }
11936 new_triggers.patterns[i].mask = mask_pat;
11937 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11938 mask_len);
11939 mask_pat += mask_len;
11940 new_triggers.patterns[i].pattern = mask_pat;
11941 new_triggers.patterns[i].pattern_len = pat_len;
11942 memcpy(mask_pat,
11943 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11944 pat_len);
11945 i++;
11946 }
11947 }
11948
11949 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11950 regular = true;
11951 err = nl80211_parse_wowlan_tcp(
11952 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11953 &new_triggers);
11954 if (err)
11955 goto error;
11956 }
11957
11958 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11959 regular = true;
11960 err = nl80211_parse_wowlan_nd(
11961 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11962 &new_triggers);
11963 if (err)
11964 goto error;
11965 }
11966
11967 /* The 'any' trigger means the device continues operating more or less
11968 * as in its normal operation mode and wakes up the host on most of the
11969 * normal interrupts (like packet RX, ...)
11970 * It therefore makes little sense to combine with the more constrained
11971 * wakeup trigger modes.
11972 */
11973 if (new_triggers.any && regular) {
11974 err = -EINVAL;
11975 goto error;
11976 }
11977
11978 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11979 if (!ntrig) {
11980 err = -ENOMEM;
11981 goto error;
11982 }
11983 cfg80211_rdev_free_wowlan(rdev);
11984 rdev->wiphy.wowlan_config = ntrig;
11985
11986 set_wakeup:
11987 if (rdev->ops->set_wakeup &&
11988 prev_enabled != !!rdev->wiphy.wowlan_config)
11989 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11990
11991 return 0;
11992 error:
11993 for (i = 0; i < new_triggers.n_patterns; i++)
11994 kfree(new_triggers.patterns[i].mask);
11995 kfree(new_triggers.patterns);
11996 if (new_triggers.tcp && new_triggers.tcp->sock)
11997 sock_release(new_triggers.tcp->sock);
11998 kfree(new_triggers.tcp);
11999 kfree(new_triggers.nd_config);
12000 return err;
12001 }
12002 #endif
12003
12004 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12005 struct cfg80211_registered_device *rdev)
12006 {
12007 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12008 int i, j, pat_len;
12009 struct cfg80211_coalesce_rules *rule;
12010
12011 if (!rdev->coalesce->n_rules)
12012 return 0;
12013
12014 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12015 if (!nl_rules)
12016 return -ENOBUFS;
12017
12018 for (i = 0; i < rdev->coalesce->n_rules; i++) {
12019 nl_rule = nla_nest_start_noflag(msg, i + 1);
12020 if (!nl_rule)
12021 return -ENOBUFS;
12022
12023 rule = &rdev->coalesce->rules[i];
12024 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12025 rule->delay))
12026 return -ENOBUFS;
12027
12028 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12029 rule->condition))
12030 return -ENOBUFS;
12031
12032 nl_pats = nla_nest_start_noflag(msg,
12033 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12034 if (!nl_pats)
12035 return -ENOBUFS;
12036
12037 for (j = 0; j < rule->n_patterns; j++) {
12038 nl_pat = nla_nest_start_noflag(msg, j + 1);
12039 if (!nl_pat)
12040 return -ENOBUFS;
12041 pat_len = rule->patterns[j].pattern_len;
12042 if (nla_put(msg, NL80211_PKTPAT_MASK,
12043 DIV_ROUND_UP(pat_len, 8),
12044 rule->patterns[j].mask) ||
12045 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12046 rule->patterns[j].pattern) ||
12047 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12048 rule->patterns[j].pkt_offset))
12049 return -ENOBUFS;
12050 nla_nest_end(msg, nl_pat);
12051 }
12052 nla_nest_end(msg, nl_pats);
12053 nla_nest_end(msg, nl_rule);
12054 }
12055 nla_nest_end(msg, nl_rules);
12056
12057 return 0;
12058 }
12059
12060 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12061 {
12062 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12063 struct sk_buff *msg;
12064 void *hdr;
12065
12066 if (!rdev->wiphy.coalesce)
12067 return -EOPNOTSUPP;
12068
12069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12070 if (!msg)
12071 return -ENOMEM;
12072
12073 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12074 NL80211_CMD_GET_COALESCE);
12075 if (!hdr)
12076 goto nla_put_failure;
12077
12078 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12079 goto nla_put_failure;
12080
12081 genlmsg_end(msg, hdr);
12082 return genlmsg_reply(msg, info);
12083
12084 nla_put_failure:
12085 nlmsg_free(msg);
12086 return -ENOBUFS;
12087 }
12088
12089 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12090 {
12091 struct cfg80211_coalesce *coalesce = rdev->coalesce;
12092 int i, j;
12093 struct cfg80211_coalesce_rules *rule;
12094
12095 if (!coalesce)
12096 return;
12097
12098 for (i = 0; i < coalesce->n_rules; i++) {
12099 rule = &coalesce->rules[i];
12100 for (j = 0; j < rule->n_patterns; j++)
12101 kfree(rule->patterns[j].mask);
12102 kfree(rule->patterns);
12103 }
12104 kfree(coalesce->rules);
12105 kfree(coalesce);
12106 rdev->coalesce = NULL;
12107 }
12108
12109 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12110 struct nlattr *rule,
12111 struct cfg80211_coalesce_rules *new_rule)
12112 {
12113 int err, i;
12114 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12115 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12116 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12117 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12118
12119 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12120 rule, nl80211_coalesce_policy, NULL);
12121 if (err)
12122 return err;
12123
12124 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12125 new_rule->delay =
12126 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12127 if (new_rule->delay > coalesce->max_delay)
12128 return -EINVAL;
12129
12130 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12131 new_rule->condition =
12132 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12133
12134 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12135 return -EINVAL;
12136
12137 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12138 rem)
12139 n_patterns++;
12140 if (n_patterns > coalesce->n_patterns)
12141 return -EINVAL;
12142
12143 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12144 GFP_KERNEL);
12145 if (!new_rule->patterns)
12146 return -ENOMEM;
12147
12148 new_rule->n_patterns = n_patterns;
12149 i = 0;
12150
12151 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12152 rem) {
12153 u8 *mask_pat;
12154
12155 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12156 pat,
12157 nl80211_packet_pattern_policy,
12158 NULL);
12159 if (err)
12160 return err;
12161
12162 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12163 !pat_tb[NL80211_PKTPAT_PATTERN])
12164 return -EINVAL;
12165 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12166 mask_len = DIV_ROUND_UP(pat_len, 8);
12167 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12168 return -EINVAL;
12169 if (pat_len > coalesce->pattern_max_len ||
12170 pat_len < coalesce->pattern_min_len)
12171 return -EINVAL;
12172
12173 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12174 pkt_offset = 0;
12175 else
12176 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12177 if (pkt_offset > coalesce->max_pkt_offset)
12178 return -EINVAL;
12179 new_rule->patterns[i].pkt_offset = pkt_offset;
12180
12181 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12182 if (!mask_pat)
12183 return -ENOMEM;
12184
12185 new_rule->patterns[i].mask = mask_pat;
12186 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12187 mask_len);
12188
12189 mask_pat += mask_len;
12190 new_rule->patterns[i].pattern = mask_pat;
12191 new_rule->patterns[i].pattern_len = pat_len;
12192 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12193 pat_len);
12194 i++;
12195 }
12196
12197 return 0;
12198 }
12199
12200 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12201 {
12202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12203 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12204 struct cfg80211_coalesce new_coalesce = {};
12205 struct cfg80211_coalesce *n_coalesce;
12206 int err, rem_rule, n_rules = 0, i, j;
12207 struct nlattr *rule;
12208 struct cfg80211_coalesce_rules *tmp_rule;
12209
12210 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12211 return -EOPNOTSUPP;
12212
12213 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12214 cfg80211_rdev_free_coalesce(rdev);
12215 rdev_set_coalesce(rdev, NULL);
12216 return 0;
12217 }
12218
12219 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12220 rem_rule)
12221 n_rules++;
12222 if (n_rules > coalesce->n_rules)
12223 return -EINVAL;
12224
12225 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12226 GFP_KERNEL);
12227 if (!new_coalesce.rules)
12228 return -ENOMEM;
12229
12230 new_coalesce.n_rules = n_rules;
12231 i = 0;
12232
12233 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12234 rem_rule) {
12235 err = nl80211_parse_coalesce_rule(rdev, rule,
12236 &new_coalesce.rules[i]);
12237 if (err)
12238 goto error;
12239
12240 i++;
12241 }
12242
12243 err = rdev_set_coalesce(rdev, &new_coalesce);
12244 if (err)
12245 goto error;
12246
12247 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12248 if (!n_coalesce) {
12249 err = -ENOMEM;
12250 goto error;
12251 }
12252 cfg80211_rdev_free_coalesce(rdev);
12253 rdev->coalesce = n_coalesce;
12254
12255 return 0;
12256 error:
12257 for (i = 0; i < new_coalesce.n_rules; i++) {
12258 tmp_rule = &new_coalesce.rules[i];
12259 for (j = 0; j < tmp_rule->n_patterns; j++)
12260 kfree(tmp_rule->patterns[j].mask);
12261 kfree(tmp_rule->patterns);
12262 }
12263 kfree(new_coalesce.rules);
12264
12265 return err;
12266 }
12267
12268 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12269 {
12270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12271 struct net_device *dev = info->user_ptr[1];
12272 struct wireless_dev *wdev = dev->ieee80211_ptr;
12273 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12274 struct cfg80211_gtk_rekey_data rekey_data;
12275 int err;
12276
12277 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12278 return -EINVAL;
12279
12280 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12281 info->attrs[NL80211_ATTR_REKEY_DATA],
12282 nl80211_rekey_policy, info->extack);
12283 if (err)
12284 return err;
12285
12286 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12287 !tb[NL80211_REKEY_DATA_KCK])
12288 return -EINVAL;
12289 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12290 return -ERANGE;
12291 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12292 return -ERANGE;
12293 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12294 return -ERANGE;
12295
12296 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12297 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12298 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12299
12300 wdev_lock(wdev);
12301 if (!wdev->current_bss) {
12302 err = -ENOTCONN;
12303 goto out;
12304 }
12305
12306 if (!rdev->ops->set_rekey_data) {
12307 err = -EOPNOTSUPP;
12308 goto out;
12309 }
12310
12311 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12312 out:
12313 wdev_unlock(wdev);
12314 return err;
12315 }
12316
12317 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12318 struct genl_info *info)
12319 {
12320 struct net_device *dev = info->user_ptr[1];
12321 struct wireless_dev *wdev = dev->ieee80211_ptr;
12322
12323 if (wdev->iftype != NL80211_IFTYPE_AP &&
12324 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12325 return -EINVAL;
12326
12327 if (wdev->ap_unexpected_nlportid)
12328 return -EBUSY;
12329
12330 wdev->ap_unexpected_nlportid = info->snd_portid;
12331 return 0;
12332 }
12333
12334 static int nl80211_probe_client(struct sk_buff *skb,
12335 struct genl_info *info)
12336 {
12337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338 struct net_device *dev = info->user_ptr[1];
12339 struct wireless_dev *wdev = dev->ieee80211_ptr;
12340 struct sk_buff *msg;
12341 void *hdr;
12342 const u8 *addr;
12343 u64 cookie;
12344 int err;
12345
12346 if (wdev->iftype != NL80211_IFTYPE_AP &&
12347 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12348 return -EOPNOTSUPP;
12349
12350 if (!info->attrs[NL80211_ATTR_MAC])
12351 return -EINVAL;
12352
12353 if (!rdev->ops->probe_client)
12354 return -EOPNOTSUPP;
12355
12356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12357 if (!msg)
12358 return -ENOMEM;
12359
12360 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12361 NL80211_CMD_PROBE_CLIENT);
12362 if (!hdr) {
12363 err = -ENOBUFS;
12364 goto free_msg;
12365 }
12366
12367 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12368
12369 err = rdev_probe_client(rdev, dev, addr, &cookie);
12370 if (err)
12371 goto free_msg;
12372
12373 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12374 NL80211_ATTR_PAD))
12375 goto nla_put_failure;
12376
12377 genlmsg_end(msg, hdr);
12378
12379 return genlmsg_reply(msg, info);
12380
12381 nla_put_failure:
12382 err = -ENOBUFS;
12383 free_msg:
12384 nlmsg_free(msg);
12385 return err;
12386 }
12387
12388 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12389 {
12390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12391 struct cfg80211_beacon_registration *reg, *nreg;
12392 int rv;
12393
12394 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12395 return -EOPNOTSUPP;
12396
12397 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12398 if (!nreg)
12399 return -ENOMEM;
12400
12401 /* First, check if already registered. */
12402 spin_lock_bh(&rdev->beacon_registrations_lock);
12403 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12404 if (reg->nlportid == info->snd_portid) {
12405 rv = -EALREADY;
12406 goto out_err;
12407 }
12408 }
12409 /* Add it to the list */
12410 nreg->nlportid = info->snd_portid;
12411 list_add(&nreg->list, &rdev->beacon_registrations);
12412
12413 spin_unlock_bh(&rdev->beacon_registrations_lock);
12414
12415 return 0;
12416 out_err:
12417 spin_unlock_bh(&rdev->beacon_registrations_lock);
12418 kfree(nreg);
12419 return rv;
12420 }
12421
12422 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12423 {
12424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12425 struct wireless_dev *wdev = info->user_ptr[1];
12426 int err;
12427
12428 if (!rdev->ops->start_p2p_device)
12429 return -EOPNOTSUPP;
12430
12431 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12432 return -EOPNOTSUPP;
12433
12434 if (wdev_running(wdev))
12435 return 0;
12436
12437 if (rfkill_blocked(rdev->rfkill))
12438 return -ERFKILL;
12439
12440 err = rdev_start_p2p_device(rdev, wdev);
12441 if (err)
12442 return err;
12443
12444 wdev->is_running = true;
12445 rdev->opencount++;
12446
12447 return 0;
12448 }
12449
12450 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12451 {
12452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12453 struct wireless_dev *wdev = info->user_ptr[1];
12454
12455 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12456 return -EOPNOTSUPP;
12457
12458 if (!rdev->ops->stop_p2p_device)
12459 return -EOPNOTSUPP;
12460
12461 cfg80211_stop_p2p_device(rdev, wdev);
12462
12463 return 0;
12464 }
12465
12466 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12467 {
12468 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12469 struct wireless_dev *wdev = info->user_ptr[1];
12470 struct cfg80211_nan_conf conf = {};
12471 int err;
12472
12473 if (wdev->iftype != NL80211_IFTYPE_NAN)
12474 return -EOPNOTSUPP;
12475
12476 if (wdev_running(wdev))
12477 return -EEXIST;
12478
12479 if (rfkill_blocked(rdev->rfkill))
12480 return -ERFKILL;
12481
12482 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12483 return -EINVAL;
12484
12485 conf.master_pref =
12486 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12487
12488 if (info->attrs[NL80211_ATTR_BANDS]) {
12489 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12490
12491 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12492 return -EOPNOTSUPP;
12493
12494 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12495 return -EINVAL;
12496
12497 conf.bands = bands;
12498 }
12499
12500 err = rdev_start_nan(rdev, wdev, &conf);
12501 if (err)
12502 return err;
12503
12504 wdev->is_running = true;
12505 rdev->opencount++;
12506
12507 return 0;
12508 }
12509
12510 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12511 {
12512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12513 struct wireless_dev *wdev = info->user_ptr[1];
12514
12515 if (wdev->iftype != NL80211_IFTYPE_NAN)
12516 return -EOPNOTSUPP;
12517
12518 cfg80211_stop_nan(rdev, wdev);
12519
12520 return 0;
12521 }
12522
12523 static int validate_nan_filter(struct nlattr *filter_attr)
12524 {
12525 struct nlattr *attr;
12526 int len = 0, n_entries = 0, rem;
12527
12528 nla_for_each_nested(attr, filter_attr, rem) {
12529 len += nla_len(attr);
12530 n_entries++;
12531 }
12532
12533 if (len >= U8_MAX)
12534 return -EINVAL;
12535
12536 return n_entries;
12537 }
12538
12539 static int handle_nan_filter(struct nlattr *attr_filter,
12540 struct cfg80211_nan_func *func,
12541 bool tx)
12542 {
12543 struct nlattr *attr;
12544 int n_entries, rem, i;
12545 struct cfg80211_nan_func_filter *filter;
12546
12547 n_entries = validate_nan_filter(attr_filter);
12548 if (n_entries < 0)
12549 return n_entries;
12550
12551 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12552
12553 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12554 if (!filter)
12555 return -ENOMEM;
12556
12557 i = 0;
12558 nla_for_each_nested(attr, attr_filter, rem) {
12559 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12560 filter[i].len = nla_len(attr);
12561 i++;
12562 }
12563 if (tx) {
12564 func->num_tx_filters = n_entries;
12565 func->tx_filters = filter;
12566 } else {
12567 func->num_rx_filters = n_entries;
12568 func->rx_filters = filter;
12569 }
12570
12571 return 0;
12572 }
12573
12574 static int nl80211_nan_add_func(struct sk_buff *skb,
12575 struct genl_info *info)
12576 {
12577 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12578 struct wireless_dev *wdev = info->user_ptr[1];
12579 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12580 struct cfg80211_nan_func *func;
12581 struct sk_buff *msg = NULL;
12582 void *hdr = NULL;
12583 int err = 0;
12584
12585 if (wdev->iftype != NL80211_IFTYPE_NAN)
12586 return -EOPNOTSUPP;
12587
12588 if (!wdev_running(wdev))
12589 return -ENOTCONN;
12590
12591 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12592 return -EINVAL;
12593
12594 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12595 info->attrs[NL80211_ATTR_NAN_FUNC],
12596 nl80211_nan_func_policy,
12597 info->extack);
12598 if (err)
12599 return err;
12600
12601 func = kzalloc(sizeof(*func), GFP_KERNEL);
12602 if (!func)
12603 return -ENOMEM;
12604
12605 func->cookie = cfg80211_assign_cookie(rdev);
12606
12607 if (!tb[NL80211_NAN_FUNC_TYPE] ||
12608 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12609 err = -EINVAL;
12610 goto out;
12611 }
12612
12613
12614 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12615
12616 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12617 err = -EINVAL;
12618 goto out;
12619 }
12620
12621 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12622 sizeof(func->service_id));
12623
12624 func->close_range =
12625 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12626
12627 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12628 func->serv_spec_info_len =
12629 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12630 func->serv_spec_info =
12631 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12632 func->serv_spec_info_len,
12633 GFP_KERNEL);
12634 if (!func->serv_spec_info) {
12635 err = -ENOMEM;
12636 goto out;
12637 }
12638 }
12639
12640 if (tb[NL80211_NAN_FUNC_TTL])
12641 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12642
12643 switch (func->type) {
12644 case NL80211_NAN_FUNC_PUBLISH:
12645 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12646 err = -EINVAL;
12647 goto out;
12648 }
12649
12650 func->publish_type =
12651 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12652 func->publish_bcast =
12653 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12654
12655 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12656 func->publish_bcast) {
12657 err = -EINVAL;
12658 goto out;
12659 }
12660 break;
12661 case NL80211_NAN_FUNC_SUBSCRIBE:
12662 func->subscribe_active =
12663 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12664 break;
12665 case NL80211_NAN_FUNC_FOLLOW_UP:
12666 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12667 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12668 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12669 err = -EINVAL;
12670 goto out;
12671 }
12672
12673 func->followup_id =
12674 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12675 func->followup_reqid =
12676 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12677 memcpy(func->followup_dest.addr,
12678 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12679 sizeof(func->followup_dest.addr));
12680 if (func->ttl) {
12681 err = -EINVAL;
12682 goto out;
12683 }
12684 break;
12685 default:
12686 err = -EINVAL;
12687 goto out;
12688 }
12689
12690 if (tb[NL80211_NAN_FUNC_SRF]) {
12691 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12692
12693 err = nla_parse_nested_deprecated(srf_tb,
12694 NL80211_NAN_SRF_ATTR_MAX,
12695 tb[NL80211_NAN_FUNC_SRF],
12696 nl80211_nan_srf_policy,
12697 info->extack);
12698 if (err)
12699 goto out;
12700
12701 func->srf_include =
12702 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12703
12704 if (srf_tb[NL80211_NAN_SRF_BF]) {
12705 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12706 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12707 err = -EINVAL;
12708 goto out;
12709 }
12710
12711 func->srf_bf_len =
12712 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12713 func->srf_bf =
12714 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12715 func->srf_bf_len, GFP_KERNEL);
12716 if (!func->srf_bf) {
12717 err = -ENOMEM;
12718 goto out;
12719 }
12720
12721 func->srf_bf_idx =
12722 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12723 } else {
12724 struct nlattr *attr, *mac_attr =
12725 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12726 int n_entries, rem, i = 0;
12727
12728 if (!mac_attr) {
12729 err = -EINVAL;
12730 goto out;
12731 }
12732
12733 n_entries = validate_acl_mac_addrs(mac_attr);
12734 if (n_entries <= 0) {
12735 err = -EINVAL;
12736 goto out;
12737 }
12738
12739 func->srf_num_macs = n_entries;
12740 func->srf_macs =
12741 kcalloc(n_entries, sizeof(*func->srf_macs),
12742 GFP_KERNEL);
12743 if (!func->srf_macs) {
12744 err = -ENOMEM;
12745 goto out;
12746 }
12747
12748 nla_for_each_nested(attr, mac_attr, rem)
12749 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12750 sizeof(*func->srf_macs));
12751 }
12752 }
12753
12754 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12755 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12756 func, true);
12757 if (err)
12758 goto out;
12759 }
12760
12761 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12762 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12763 func, false);
12764 if (err)
12765 goto out;
12766 }
12767
12768 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12769 if (!msg) {
12770 err = -ENOMEM;
12771 goto out;
12772 }
12773
12774 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12775 NL80211_CMD_ADD_NAN_FUNCTION);
12776 /* This can't really happen - we just allocated 4KB */
12777 if (WARN_ON(!hdr)) {
12778 err = -ENOMEM;
12779 goto out;
12780 }
12781
12782 err = rdev_add_nan_func(rdev, wdev, func);
12783 out:
12784 if (err < 0) {
12785 cfg80211_free_nan_func(func);
12786 nlmsg_free(msg);
12787 return err;
12788 }
12789
12790 /* propagate the instance id and cookie to userspace */
12791 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12792 NL80211_ATTR_PAD))
12793 goto nla_put_failure;
12794
12795 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12796 if (!func_attr)
12797 goto nla_put_failure;
12798
12799 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12800 func->instance_id))
12801 goto nla_put_failure;
12802
12803 nla_nest_end(msg, func_attr);
12804
12805 genlmsg_end(msg, hdr);
12806 return genlmsg_reply(msg, info);
12807
12808 nla_put_failure:
12809 nlmsg_free(msg);
12810 return -ENOBUFS;
12811 }
12812
12813 static int nl80211_nan_del_func(struct sk_buff *skb,
12814 struct genl_info *info)
12815 {
12816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12817 struct wireless_dev *wdev = info->user_ptr[1];
12818 u64 cookie;
12819
12820 if (wdev->iftype != NL80211_IFTYPE_NAN)
12821 return -EOPNOTSUPP;
12822
12823 if (!wdev_running(wdev))
12824 return -ENOTCONN;
12825
12826 if (!info->attrs[NL80211_ATTR_COOKIE])
12827 return -EINVAL;
12828
12829 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12830
12831 rdev_del_nan_func(rdev, wdev, cookie);
12832
12833 return 0;
12834 }
12835
12836 static int nl80211_nan_change_config(struct sk_buff *skb,
12837 struct genl_info *info)
12838 {
12839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12840 struct wireless_dev *wdev = info->user_ptr[1];
12841 struct cfg80211_nan_conf conf = {};
12842 u32 changed = 0;
12843
12844 if (wdev->iftype != NL80211_IFTYPE_NAN)
12845 return -EOPNOTSUPP;
12846
12847 if (!wdev_running(wdev))
12848 return -ENOTCONN;
12849
12850 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12851 conf.master_pref =
12852 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12853 if (conf.master_pref <= 1 || conf.master_pref == 255)
12854 return -EINVAL;
12855
12856 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12857 }
12858
12859 if (info->attrs[NL80211_ATTR_BANDS]) {
12860 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12861
12862 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12863 return -EOPNOTSUPP;
12864
12865 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12866 return -EINVAL;
12867
12868 conf.bands = bands;
12869 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12870 }
12871
12872 if (!changed)
12873 return -EINVAL;
12874
12875 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12876 }
12877
12878 void cfg80211_nan_match(struct wireless_dev *wdev,
12879 struct cfg80211_nan_match_params *match, gfp_t gfp)
12880 {
12881 struct wiphy *wiphy = wdev->wiphy;
12882 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12883 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12884 struct sk_buff *msg;
12885 void *hdr;
12886
12887 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12888 return;
12889
12890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12891 if (!msg)
12892 return;
12893
12894 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12895 if (!hdr) {
12896 nlmsg_free(msg);
12897 return;
12898 }
12899
12900 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12901 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12902 wdev->netdev->ifindex)) ||
12903 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12904 NL80211_ATTR_PAD))
12905 goto nla_put_failure;
12906
12907 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12908 NL80211_ATTR_PAD) ||
12909 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12910 goto nla_put_failure;
12911
12912 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12913 if (!match_attr)
12914 goto nla_put_failure;
12915
12916 local_func_attr = nla_nest_start_noflag(msg,
12917 NL80211_NAN_MATCH_FUNC_LOCAL);
12918 if (!local_func_attr)
12919 goto nla_put_failure;
12920
12921 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12922 goto nla_put_failure;
12923
12924 nla_nest_end(msg, local_func_attr);
12925
12926 peer_func_attr = nla_nest_start_noflag(msg,
12927 NL80211_NAN_MATCH_FUNC_PEER);
12928 if (!peer_func_attr)
12929 goto nla_put_failure;
12930
12931 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12932 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12933 goto nla_put_failure;
12934
12935 if (match->info && match->info_len &&
12936 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12937 match->info))
12938 goto nla_put_failure;
12939
12940 nla_nest_end(msg, peer_func_attr);
12941 nla_nest_end(msg, match_attr);
12942 genlmsg_end(msg, hdr);
12943
12944 if (!wdev->owner_nlportid)
12945 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12946 msg, 0, NL80211_MCGRP_NAN, gfp);
12947 else
12948 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12949 wdev->owner_nlportid);
12950
12951 return;
12952
12953 nla_put_failure:
12954 nlmsg_free(msg);
12955 }
12956 EXPORT_SYMBOL(cfg80211_nan_match);
12957
12958 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12959 u8 inst_id,
12960 enum nl80211_nan_func_term_reason reason,
12961 u64 cookie, gfp_t gfp)
12962 {
12963 struct wiphy *wiphy = wdev->wiphy;
12964 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12965 struct sk_buff *msg;
12966 struct nlattr *func_attr;
12967 void *hdr;
12968
12969 if (WARN_ON(!inst_id))
12970 return;
12971
12972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12973 if (!msg)
12974 return;
12975
12976 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12977 if (!hdr) {
12978 nlmsg_free(msg);
12979 return;
12980 }
12981
12982 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12983 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12984 wdev->netdev->ifindex)) ||
12985 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12986 NL80211_ATTR_PAD))
12987 goto nla_put_failure;
12988
12989 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12990 NL80211_ATTR_PAD))
12991 goto nla_put_failure;
12992
12993 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12994 if (!func_attr)
12995 goto nla_put_failure;
12996
12997 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12998 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12999 goto nla_put_failure;
13000
13001 nla_nest_end(msg, func_attr);
13002 genlmsg_end(msg, hdr);
13003
13004 if (!wdev->owner_nlportid)
13005 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13006 msg, 0, NL80211_MCGRP_NAN, gfp);
13007 else
13008 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13009 wdev->owner_nlportid);
13010
13011 return;
13012
13013 nla_put_failure:
13014 nlmsg_free(msg);
13015 }
13016 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13017
13018 static int nl80211_get_protocol_features(struct sk_buff *skb,
13019 struct genl_info *info)
13020 {
13021 void *hdr;
13022 struct sk_buff *msg;
13023
13024 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13025 if (!msg)
13026 return -ENOMEM;
13027
13028 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13029 NL80211_CMD_GET_PROTOCOL_FEATURES);
13030 if (!hdr)
13031 goto nla_put_failure;
13032
13033 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13034 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13035 goto nla_put_failure;
13036
13037 genlmsg_end(msg, hdr);
13038 return genlmsg_reply(msg, info);
13039
13040 nla_put_failure:
13041 kfree_skb(msg);
13042 return -ENOBUFS;
13043 }
13044
13045 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13046 {
13047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13048 struct cfg80211_update_ft_ies_params ft_params;
13049 struct net_device *dev = info->user_ptr[1];
13050
13051 if (!rdev->ops->update_ft_ies)
13052 return -EOPNOTSUPP;
13053
13054 if (!info->attrs[NL80211_ATTR_MDID] ||
13055 !info->attrs[NL80211_ATTR_IE])
13056 return -EINVAL;
13057
13058 memset(&ft_params, 0, sizeof(ft_params));
13059 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13060 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13061 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13062
13063 return rdev_update_ft_ies(rdev, dev, &ft_params);
13064 }
13065
13066 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13067 struct genl_info *info)
13068 {
13069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13070 struct wireless_dev *wdev = info->user_ptr[1];
13071 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13072 u16 duration;
13073 int ret;
13074
13075 if (!rdev->ops->crit_proto_start)
13076 return -EOPNOTSUPP;
13077
13078 if (WARN_ON(!rdev->ops->crit_proto_stop))
13079 return -EINVAL;
13080
13081 if (rdev->crit_proto_nlportid)
13082 return -EBUSY;
13083
13084 /* determine protocol if provided */
13085 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13086 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13087
13088 if (proto >= NUM_NL80211_CRIT_PROTO)
13089 return -EINVAL;
13090
13091 /* timeout must be provided */
13092 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13093 return -EINVAL;
13094
13095 duration =
13096 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13097
13098 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13099 return -ERANGE;
13100
13101 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13102 if (!ret)
13103 rdev->crit_proto_nlportid = info->snd_portid;
13104
13105 return ret;
13106 }
13107
13108 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13109 struct genl_info *info)
13110 {
13111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13112 struct wireless_dev *wdev = info->user_ptr[1];
13113
13114 if (!rdev->ops->crit_proto_stop)
13115 return -EOPNOTSUPP;
13116
13117 if (rdev->crit_proto_nlportid) {
13118 rdev->crit_proto_nlportid = 0;
13119 rdev_crit_proto_stop(rdev, wdev);
13120 }
13121 return 0;
13122 }
13123
13124 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13125 struct nlattr *attr,
13126 struct netlink_ext_ack *extack)
13127 {
13128 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13129 if (attr->nla_type & NLA_F_NESTED) {
13130 NL_SET_ERR_MSG_ATTR(extack, attr,
13131 "unexpected nested data");
13132 return -EINVAL;
13133 }
13134
13135 return 0;
13136 }
13137
13138 if (!(attr->nla_type & NLA_F_NESTED)) {
13139 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13140 return -EINVAL;
13141 }
13142
13143 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13144 }
13145
13146 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13147 {
13148 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13149 struct wireless_dev *wdev =
13150 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13151 int i, err;
13152 u32 vid, subcmd;
13153
13154 if (!rdev->wiphy.vendor_commands)
13155 return -EOPNOTSUPP;
13156
13157 if (IS_ERR(wdev)) {
13158 err = PTR_ERR(wdev);
13159 if (err != -EINVAL)
13160 return err;
13161 wdev = NULL;
13162 } else if (wdev->wiphy != &rdev->wiphy) {
13163 return -EINVAL;
13164 }
13165
13166 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13167 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13168 return -EINVAL;
13169
13170 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13171 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13172 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13173 const struct wiphy_vendor_command *vcmd;
13174 void *data = NULL;
13175 int len = 0;
13176
13177 vcmd = &rdev->wiphy.vendor_commands[i];
13178
13179 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13180 continue;
13181
13182 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13183 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13184 if (!wdev)
13185 return -EINVAL;
13186 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13187 !wdev->netdev)
13188 return -EINVAL;
13189
13190 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13191 if (!wdev_running(wdev))
13192 return -ENETDOWN;
13193 }
13194
13195 if (!vcmd->doit)
13196 return -EOPNOTSUPP;
13197 } else {
13198 wdev = NULL;
13199 }
13200
13201 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13202 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13203 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13204
13205 err = nl80211_vendor_check_policy(vcmd,
13206 info->attrs[NL80211_ATTR_VENDOR_DATA],
13207 info->extack);
13208 if (err)
13209 return err;
13210 }
13211
13212 rdev->cur_cmd_info = info;
13213 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13214 rdev->cur_cmd_info = NULL;
13215 return err;
13216 }
13217
13218 return -EOPNOTSUPP;
13219 }
13220
13221 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13222 struct netlink_callback *cb,
13223 struct cfg80211_registered_device **rdev,
13224 struct wireless_dev **wdev)
13225 {
13226 struct nlattr **attrbuf;
13227 u32 vid, subcmd;
13228 unsigned int i;
13229 int vcmd_idx = -1;
13230 int err;
13231 void *data = NULL;
13232 unsigned int data_len = 0;
13233
13234 if (cb->args[0]) {
13235 /* subtract the 1 again here */
13236 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13237 struct wireless_dev *tmp;
13238
13239 if (!wiphy)
13240 return -ENODEV;
13241 *rdev = wiphy_to_rdev(wiphy);
13242 *wdev = NULL;
13243
13244 if (cb->args[1]) {
13245 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13246 if (tmp->identifier == cb->args[1] - 1) {
13247 *wdev = tmp;
13248 break;
13249 }
13250 }
13251 }
13252
13253 /* keep rtnl locked in successful case */
13254 return 0;
13255 }
13256
13257 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13258 if (!attrbuf)
13259 return -ENOMEM;
13260
13261 err = nlmsg_parse_deprecated(cb->nlh,
13262 GENL_HDRLEN + nl80211_fam.hdrsize,
13263 attrbuf, nl80211_fam.maxattr,
13264 nl80211_policy, NULL);
13265 if (err)
13266 goto out;
13267
13268 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13269 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13270 err = -EINVAL;
13271 goto out;
13272 }
13273
13274 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13275 if (IS_ERR(*wdev))
13276 *wdev = NULL;
13277
13278 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13279 if (IS_ERR(*rdev)) {
13280 err = PTR_ERR(*rdev);
13281 goto out;
13282 }
13283
13284 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13285 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13286
13287 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13288 const struct wiphy_vendor_command *vcmd;
13289
13290 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13291
13292 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13293 continue;
13294
13295 if (!vcmd->dumpit) {
13296 err = -EOPNOTSUPP;
13297 goto out;
13298 }
13299
13300 vcmd_idx = i;
13301 break;
13302 }
13303
13304 if (vcmd_idx < 0) {
13305 err = -EOPNOTSUPP;
13306 goto out;
13307 }
13308
13309 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13310 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13311 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13312
13313 err = nl80211_vendor_check_policy(
13314 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13315 attrbuf[NL80211_ATTR_VENDOR_DATA],
13316 cb->extack);
13317 if (err)
13318 goto out;
13319 }
13320
13321 /* 0 is the first index - add 1 to parse only once */
13322 cb->args[0] = (*rdev)->wiphy_idx + 1;
13323 /* add 1 to know if it was NULL */
13324 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13325 cb->args[2] = vcmd_idx;
13326 cb->args[3] = (unsigned long)data;
13327 cb->args[4] = data_len;
13328
13329 /* keep rtnl locked in successful case */
13330 err = 0;
13331 out:
13332 kfree(attrbuf);
13333 return err;
13334 }
13335
13336 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13337 struct netlink_callback *cb)
13338 {
13339 struct cfg80211_registered_device *rdev;
13340 struct wireless_dev *wdev;
13341 unsigned int vcmd_idx;
13342 const struct wiphy_vendor_command *vcmd;
13343 void *data;
13344 int data_len;
13345 int err;
13346 struct nlattr *vendor_data;
13347
13348 rtnl_lock();
13349 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13350 if (err)
13351 goto out;
13352
13353 vcmd_idx = cb->args[2];
13354 data = (void *)cb->args[3];
13355 data_len = cb->args[4];
13356 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13357
13358 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13359 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13360 if (!wdev) {
13361 err = -EINVAL;
13362 goto out;
13363 }
13364 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13365 !wdev->netdev) {
13366 err = -EINVAL;
13367 goto out;
13368 }
13369
13370 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13371 if (!wdev_running(wdev)) {
13372 err = -ENETDOWN;
13373 goto out;
13374 }
13375 }
13376 }
13377
13378 while (1) {
13379 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13380 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13381 NL80211_CMD_VENDOR);
13382 if (!hdr)
13383 break;
13384
13385 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13386 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13387 wdev_id(wdev),
13388 NL80211_ATTR_PAD))) {
13389 genlmsg_cancel(skb, hdr);
13390 break;
13391 }
13392
13393 vendor_data = nla_nest_start_noflag(skb,
13394 NL80211_ATTR_VENDOR_DATA);
13395 if (!vendor_data) {
13396 genlmsg_cancel(skb, hdr);
13397 break;
13398 }
13399
13400 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13401 (unsigned long *)&cb->args[5]);
13402 nla_nest_end(skb, vendor_data);
13403
13404 if (err == -ENOBUFS || err == -ENOENT) {
13405 genlmsg_cancel(skb, hdr);
13406 break;
13407 } else if (err) {
13408 genlmsg_cancel(skb, hdr);
13409 goto out;
13410 }
13411
13412 genlmsg_end(skb, hdr);
13413 }
13414
13415 err = skb->len;
13416 out:
13417 rtnl_unlock();
13418 return err;
13419 }
13420
13421 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13422 enum nl80211_commands cmd,
13423 enum nl80211_attrs attr,
13424 int approxlen)
13425 {
13426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13427
13428 if (WARN_ON(!rdev->cur_cmd_info))
13429 return NULL;
13430
13431 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13432 rdev->cur_cmd_info->snd_portid,
13433 rdev->cur_cmd_info->snd_seq,
13434 cmd, attr, NULL, GFP_KERNEL);
13435 }
13436 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13437
13438 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13439 {
13440 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13441 void *hdr = ((void **)skb->cb)[1];
13442 struct nlattr *data = ((void **)skb->cb)[2];
13443
13444 /* clear CB data for netlink core to own from now on */
13445 memset(skb->cb, 0, sizeof(skb->cb));
13446
13447 if (WARN_ON(!rdev->cur_cmd_info)) {
13448 kfree_skb(skb);
13449 return -EINVAL;
13450 }
13451
13452 nla_nest_end(skb, data);
13453 genlmsg_end(skb, hdr);
13454 return genlmsg_reply(skb, rdev->cur_cmd_info);
13455 }
13456 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13457
13458 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13459 {
13460 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13461
13462 if (WARN_ON(!rdev->cur_cmd_info))
13463 return 0;
13464
13465 return rdev->cur_cmd_info->snd_portid;
13466 }
13467 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13468
13469 static int nl80211_set_qos_map(struct sk_buff *skb,
13470 struct genl_info *info)
13471 {
13472 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13473 struct cfg80211_qos_map *qos_map = NULL;
13474 struct net_device *dev = info->user_ptr[1];
13475 u8 *pos, len, num_des, des_len, des;
13476 int ret;
13477
13478 if (!rdev->ops->set_qos_map)
13479 return -EOPNOTSUPP;
13480
13481 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13482 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13483 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13484
13485 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13486 len > IEEE80211_QOS_MAP_LEN_MAX)
13487 return -EINVAL;
13488
13489 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13490 if (!qos_map)
13491 return -ENOMEM;
13492
13493 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13494 if (num_des) {
13495 des_len = num_des *
13496 sizeof(struct cfg80211_dscp_exception);
13497 memcpy(qos_map->dscp_exception, pos, des_len);
13498 qos_map->num_des = num_des;
13499 for (des = 0; des < num_des; des++) {
13500 if (qos_map->dscp_exception[des].up > 7) {
13501 kfree(qos_map);
13502 return -EINVAL;
13503 }
13504 }
13505 pos += des_len;
13506 }
13507 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13508 }
13509
13510 wdev_lock(dev->ieee80211_ptr);
13511 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13512 if (!ret)
13513 ret = rdev_set_qos_map(rdev, dev, qos_map);
13514 wdev_unlock(dev->ieee80211_ptr);
13515
13516 kfree(qos_map);
13517 return ret;
13518 }
13519
13520 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13521 {
13522 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13523 struct net_device *dev = info->user_ptr[1];
13524 struct wireless_dev *wdev = dev->ieee80211_ptr;
13525 const u8 *peer;
13526 u8 tsid, up;
13527 u16 admitted_time = 0;
13528 int err;
13529
13530 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13531 return -EOPNOTSUPP;
13532
13533 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13534 !info->attrs[NL80211_ATTR_USER_PRIO])
13535 return -EINVAL;
13536
13537 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13538 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13539
13540 /* WMM uses TIDs 0-7 even for TSPEC */
13541 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13542 /* TODO: handle 802.11 TSPEC/admission control
13543 * need more attributes for that (e.g. BA session requirement);
13544 * change the WMM adminssion test above to allow both then
13545 */
13546 return -EINVAL;
13547 }
13548
13549 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13550
13551 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13552 admitted_time =
13553 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13554 if (!admitted_time)
13555 return -EINVAL;
13556 }
13557
13558 wdev_lock(wdev);
13559 switch (wdev->iftype) {
13560 case NL80211_IFTYPE_STATION:
13561 case NL80211_IFTYPE_P2P_CLIENT:
13562 if (wdev->current_bss)
13563 break;
13564 err = -ENOTCONN;
13565 goto out;
13566 default:
13567 err = -EOPNOTSUPP;
13568 goto out;
13569 }
13570
13571 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13572
13573 out:
13574 wdev_unlock(wdev);
13575 return err;
13576 }
13577
13578 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13579 {
13580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13581 struct net_device *dev = info->user_ptr[1];
13582 struct wireless_dev *wdev = dev->ieee80211_ptr;
13583 const u8 *peer;
13584 u8 tsid;
13585 int err;
13586
13587 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13588 return -EINVAL;
13589
13590 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13591 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13592
13593 wdev_lock(wdev);
13594 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13595 wdev_unlock(wdev);
13596
13597 return err;
13598 }
13599
13600 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13601 struct genl_info *info)
13602 {
13603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13604 struct net_device *dev = info->user_ptr[1];
13605 struct wireless_dev *wdev = dev->ieee80211_ptr;
13606 struct cfg80211_chan_def chandef = {};
13607 const u8 *addr;
13608 u8 oper_class;
13609 int err;
13610
13611 if (!rdev->ops->tdls_channel_switch ||
13612 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13613 return -EOPNOTSUPP;
13614
13615 switch (dev->ieee80211_ptr->iftype) {
13616 case NL80211_IFTYPE_STATION:
13617 case NL80211_IFTYPE_P2P_CLIENT:
13618 break;
13619 default:
13620 return -EOPNOTSUPP;
13621 }
13622
13623 if (!info->attrs[NL80211_ATTR_MAC] ||
13624 !info->attrs[NL80211_ATTR_OPER_CLASS])
13625 return -EINVAL;
13626
13627 err = nl80211_parse_chandef(rdev, info, &chandef);
13628 if (err)
13629 return err;
13630
13631 /*
13632 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13633 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13634 * specification is not defined for them.
13635 */
13636 if (chandef.chan->band == NL80211_BAND_2GHZ &&
13637 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13638 chandef.width != NL80211_CHAN_WIDTH_20)
13639 return -EINVAL;
13640
13641 /* we will be active on the TDLS link */
13642 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13643 wdev->iftype))
13644 return -EINVAL;
13645
13646 /* don't allow switching to DFS channels */
13647 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13648 return -EINVAL;
13649
13650 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13651 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13652
13653 wdev_lock(wdev);
13654 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13655 wdev_unlock(wdev);
13656
13657 return err;
13658 }
13659
13660 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13661 struct genl_info *info)
13662 {
13663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13664 struct net_device *dev = info->user_ptr[1];
13665 struct wireless_dev *wdev = dev->ieee80211_ptr;
13666 const u8 *addr;
13667
13668 if (!rdev->ops->tdls_channel_switch ||
13669 !rdev->ops->tdls_cancel_channel_switch ||
13670 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13671 return -EOPNOTSUPP;
13672
13673 switch (dev->ieee80211_ptr->iftype) {
13674 case NL80211_IFTYPE_STATION:
13675 case NL80211_IFTYPE_P2P_CLIENT:
13676 break;
13677 default:
13678 return -EOPNOTSUPP;
13679 }
13680
13681 if (!info->attrs[NL80211_ATTR_MAC])
13682 return -EINVAL;
13683
13684 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13685
13686 wdev_lock(wdev);
13687 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13688 wdev_unlock(wdev);
13689
13690 return 0;
13691 }
13692
13693 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13694 struct genl_info *info)
13695 {
13696 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13697 struct net_device *dev = info->user_ptr[1];
13698 struct wireless_dev *wdev = dev->ieee80211_ptr;
13699 const struct nlattr *nla;
13700 bool enabled;
13701
13702 if (!rdev->ops->set_multicast_to_unicast)
13703 return -EOPNOTSUPP;
13704
13705 if (wdev->iftype != NL80211_IFTYPE_AP &&
13706 wdev->iftype != NL80211_IFTYPE_P2P_GO)
13707 return -EOPNOTSUPP;
13708
13709 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13710 enabled = nla_get_flag(nla);
13711
13712 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13713 }
13714
13715 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13716 {
13717 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13718 struct net_device *dev = info->user_ptr[1];
13719 struct wireless_dev *wdev = dev->ieee80211_ptr;
13720 struct cfg80211_pmk_conf pmk_conf = {};
13721 int ret;
13722
13723 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13724 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13725 return -EOPNOTSUPP;
13726
13727 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13728 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13729 return -EOPNOTSUPP;
13730
13731 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13732 return -EINVAL;
13733
13734 wdev_lock(wdev);
13735 if (!wdev->current_bss) {
13736 ret = -ENOTCONN;
13737 goto out;
13738 }
13739
13740 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13741 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13742 ret = -EINVAL;
13743 goto out;
13744 }
13745
13746 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13747 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13748 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13749 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13750 ret = -EINVAL;
13751 goto out;
13752 }
13753
13754 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13755 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13756
13757 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13758 ret = -EINVAL;
13759 goto out;
13760 }
13761
13762 pmk_conf.pmk_r0_name =
13763 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13764 }
13765
13766 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13767 out:
13768 wdev_unlock(wdev);
13769 return ret;
13770 }
13771
13772 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13773 {
13774 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13775 struct net_device *dev = info->user_ptr[1];
13776 struct wireless_dev *wdev = dev->ieee80211_ptr;
13777 const u8 *aa;
13778 int ret;
13779
13780 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13781 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13782 return -EOPNOTSUPP;
13783
13784 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13785 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13786 return -EOPNOTSUPP;
13787
13788 if (!info->attrs[NL80211_ATTR_MAC])
13789 return -EINVAL;
13790
13791 wdev_lock(wdev);
13792 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13793 ret = rdev_del_pmk(rdev, dev, aa);
13794 wdev_unlock(wdev);
13795
13796 return ret;
13797 }
13798
13799 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13800 {
13801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13802 struct net_device *dev = info->user_ptr[1];
13803 struct cfg80211_external_auth_params params;
13804
13805 if (!rdev->ops->external_auth)
13806 return -EOPNOTSUPP;
13807
13808 if (!info->attrs[NL80211_ATTR_SSID] &&
13809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13810 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13811 return -EINVAL;
13812
13813 if (!info->attrs[NL80211_ATTR_BSSID])
13814 return -EINVAL;
13815
13816 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13817 return -EINVAL;
13818
13819 memset(&params, 0, sizeof(params));
13820
13821 if (info->attrs[NL80211_ATTR_SSID]) {
13822 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13823 if (params.ssid.ssid_len == 0 ||
13824 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13825 return -EINVAL;
13826 memcpy(params.ssid.ssid,
13827 nla_data(info->attrs[NL80211_ATTR_SSID]),
13828 params.ssid.ssid_len);
13829 }
13830
13831 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13832 ETH_ALEN);
13833
13834 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13835
13836 if (info->attrs[NL80211_ATTR_PMKID])
13837 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13838
13839 return rdev_external_auth(rdev, dev, &params);
13840 }
13841
13842 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13843 {
13844 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13845 struct net_device *dev = info->user_ptr[1];
13846 struct wireless_dev *wdev = dev->ieee80211_ptr;
13847 const u8 *buf;
13848 size_t len;
13849 u8 *dest;
13850 u16 proto;
13851 bool noencrypt;
13852 int err;
13853
13854 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13855 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13856 return -EOPNOTSUPP;
13857
13858 if (!rdev->ops->tx_control_port)
13859 return -EOPNOTSUPP;
13860
13861 if (!info->attrs[NL80211_ATTR_FRAME] ||
13862 !info->attrs[NL80211_ATTR_MAC] ||
13863 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13864 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13865 return -EINVAL;
13866 }
13867
13868 wdev_lock(wdev);
13869
13870 switch (wdev->iftype) {
13871 case NL80211_IFTYPE_AP:
13872 case NL80211_IFTYPE_P2P_GO:
13873 case NL80211_IFTYPE_MESH_POINT:
13874 break;
13875 case NL80211_IFTYPE_ADHOC:
13876 case NL80211_IFTYPE_STATION:
13877 case NL80211_IFTYPE_P2P_CLIENT:
13878 if (wdev->current_bss)
13879 break;
13880 err = -ENOTCONN;
13881 goto out;
13882 default:
13883 err = -EOPNOTSUPP;
13884 goto out;
13885 }
13886
13887 wdev_unlock(wdev);
13888
13889 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13890 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13891 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13892 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13893 noencrypt =
13894 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13895
13896 return rdev_tx_control_port(rdev, dev, buf, len,
13897 dest, cpu_to_be16(proto), noencrypt);
13898
13899 out:
13900 wdev_unlock(wdev);
13901 return err;
13902 }
13903
13904 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13905 struct genl_info *info)
13906 {
13907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13908 struct net_device *dev = info->user_ptr[1];
13909 struct wireless_dev *wdev = dev->ieee80211_ptr;
13910 struct cfg80211_ftm_responder_stats ftm_stats = {};
13911 struct sk_buff *msg;
13912 void *hdr;
13913 struct nlattr *ftm_stats_attr;
13914 int err;
13915
13916 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13917 return -EOPNOTSUPP;
13918
13919 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13920 if (err)
13921 return err;
13922
13923 if (!ftm_stats.filled)
13924 return -ENODATA;
13925
13926 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13927 if (!msg)
13928 return -ENOMEM;
13929
13930 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13931 NL80211_CMD_GET_FTM_RESPONDER_STATS);
13932 if (!hdr)
13933 goto nla_put_failure;
13934
13935 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13936 goto nla_put_failure;
13937
13938 ftm_stats_attr = nla_nest_start_noflag(msg,
13939 NL80211_ATTR_FTM_RESPONDER_STATS);
13940 if (!ftm_stats_attr)
13941 goto nla_put_failure;
13942
13943 #define SET_FTM(field, name, type) \
13944 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13945 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
13946 ftm_stats.field)) \
13947 goto nla_put_failure; } while (0)
13948 #define SET_FTM_U64(field, name) \
13949 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13950 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
13951 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
13952 goto nla_put_failure; } while (0)
13953
13954 SET_FTM(success_num, SUCCESS_NUM, u32);
13955 SET_FTM(partial_num, PARTIAL_NUM, u32);
13956 SET_FTM(failed_num, FAILED_NUM, u32);
13957 SET_FTM(asap_num, ASAP_NUM, u32);
13958 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13959 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13960 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13961 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13962 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13963 #undef SET_FTM
13964
13965 nla_nest_end(msg, ftm_stats_attr);
13966
13967 genlmsg_end(msg, hdr);
13968 return genlmsg_reply(msg, info);
13969
13970 nla_put_failure:
13971 nlmsg_free(msg);
13972 return -ENOBUFS;
13973 }
13974
13975 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13976 {
13977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13978 struct cfg80211_update_owe_info owe_info;
13979 struct net_device *dev = info->user_ptr[1];
13980
13981 if (!rdev->ops->update_owe_info)
13982 return -EOPNOTSUPP;
13983
13984 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13985 !info->attrs[NL80211_ATTR_MAC])
13986 return -EINVAL;
13987
13988 memset(&owe_info, 0, sizeof(owe_info));
13989 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13990 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13991
13992 if (info->attrs[NL80211_ATTR_IE]) {
13993 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13994 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13995 }
13996
13997 return rdev_update_owe_info(rdev, dev, &owe_info);
13998 }
13999
14000 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14001 {
14002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14003 struct net_device *dev = info->user_ptr[1];
14004 struct wireless_dev *wdev = dev->ieee80211_ptr;
14005 struct station_info sinfo = {};
14006 const u8 *buf;
14007 size_t len;
14008 u8 *dest;
14009 int err;
14010
14011 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14012 return -EOPNOTSUPP;
14013
14014 if (!info->attrs[NL80211_ATTR_MAC] ||
14015 !info->attrs[NL80211_ATTR_FRAME]) {
14016 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14017 return -EINVAL;
14018 }
14019
14020 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14021 return -EOPNOTSUPP;
14022
14023 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14024 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14025 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14026
14027 if (len < sizeof(struct ethhdr))
14028 return -EINVAL;
14029
14030 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14031 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14032 return -EINVAL;
14033
14034 err = rdev_get_station(rdev, dev, dest, &sinfo);
14035 if (err)
14036 return err;
14037
14038 cfg80211_sinfo_release_content(&sinfo);
14039
14040 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14041 }
14042
14043 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14044 struct nlattr *attrs[], struct net_device *dev,
14045 struct cfg80211_tid_cfg *tid_conf,
14046 struct genl_info *info, const u8 *peer)
14047 {
14048 struct netlink_ext_ack *extack = info->extack;
14049 u64 mask;
14050 int err;
14051
14052 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14053 return -EINVAL;
14054
14055 tid_conf->config_override =
14056 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14057 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14058
14059 if (tid_conf->config_override) {
14060 if (rdev->ops->reset_tid_config) {
14061 err = rdev_reset_tid_config(rdev, dev, peer,
14062 tid_conf->tids);
14063 /* If peer is there no other configuration will be
14064 * allowed
14065 */
14066 if (err || peer)
14067 return err;
14068 } else {
14069 return -EINVAL;
14070 }
14071 }
14072
14073 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14074 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14075 tid_conf->noack =
14076 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14077 }
14078
14079 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14080 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14081 tid_conf->retry_short =
14082 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14083
14084 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14085 return -EINVAL;
14086 }
14087
14088 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14089 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14090 tid_conf->retry_long =
14091 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14092
14093 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14094 return -EINVAL;
14095 }
14096
14097 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14098 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14099 tid_conf->ampdu =
14100 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14101 }
14102
14103 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14104 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14105 tid_conf->rtscts =
14106 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14107 }
14108
14109 if (peer)
14110 mask = rdev->wiphy.tid_config_support.peer;
14111 else
14112 mask = rdev->wiphy.tid_config_support.vif;
14113
14114 if (tid_conf->mask & ~mask) {
14115 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14116 return -ENOTSUPP;
14117 }
14118
14119 return 0;
14120 }
14121
14122 static int nl80211_set_tid_config(struct sk_buff *skb,
14123 struct genl_info *info)
14124 {
14125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14126 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14127 struct net_device *dev = info->user_ptr[1];
14128 struct cfg80211_tid_config *tid_config;
14129 struct nlattr *tid;
14130 int conf_idx = 0, rem_conf;
14131 int ret = -EINVAL;
14132 u32 num_conf = 0;
14133
14134 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14135 return -EINVAL;
14136
14137 if (!rdev->ops->set_tid_config)
14138 return -EOPNOTSUPP;
14139
14140 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14141 rem_conf)
14142 num_conf++;
14143
14144 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14145 GFP_KERNEL);
14146 if (!tid_config)
14147 return -ENOMEM;
14148
14149 tid_config->n_tid_conf = num_conf;
14150
14151 if (info->attrs[NL80211_ATTR_MAC])
14152 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14153
14154 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14155 rem_conf) {
14156 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14157 tid, NULL, NULL);
14158
14159 if (ret)
14160 goto bad_tid_conf;
14161
14162 ret = parse_tid_conf(rdev, attrs, dev,
14163 &tid_config->tid_conf[conf_idx],
14164 info, tid_config->peer);
14165 if (ret)
14166 goto bad_tid_conf;
14167
14168 conf_idx++;
14169 }
14170
14171 ret = rdev_set_tid_config(rdev, dev, tid_config);
14172
14173 bad_tid_conf:
14174 kfree(tid_config);
14175 return ret;
14176 }
14177
14178 #define NL80211_FLAG_NEED_WIPHY 0x01
14179 #define NL80211_FLAG_NEED_NETDEV 0x02
14180 #define NL80211_FLAG_NEED_RTNL 0x04
14181 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
14182 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
14183 NL80211_FLAG_CHECK_NETDEV_UP)
14184 #define NL80211_FLAG_NEED_WDEV 0x10
14185 /* If a netdev is associated, it must be UP, P2P must be started */
14186 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
14187 NL80211_FLAG_CHECK_NETDEV_UP)
14188 #define NL80211_FLAG_CLEAR_SKB 0x20
14189
14190 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14191 struct genl_info *info)
14192 {
14193 struct cfg80211_registered_device *rdev;
14194 struct wireless_dev *wdev;
14195 struct net_device *dev;
14196 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14197
14198 if (rtnl)
14199 rtnl_lock();
14200
14201 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14202 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14203 if (IS_ERR(rdev)) {
14204 if (rtnl)
14205 rtnl_unlock();
14206 return PTR_ERR(rdev);
14207 }
14208 info->user_ptr[0] = rdev;
14209 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14210 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14211 ASSERT_RTNL();
14212
14213 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14214 info->attrs);
14215 if (IS_ERR(wdev)) {
14216 if (rtnl)
14217 rtnl_unlock();
14218 return PTR_ERR(wdev);
14219 }
14220
14221 dev = wdev->netdev;
14222 rdev = wiphy_to_rdev(wdev->wiphy);
14223
14224 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14225 if (!dev) {
14226 if (rtnl)
14227 rtnl_unlock();
14228 return -EINVAL;
14229 }
14230
14231 info->user_ptr[1] = dev;
14232 } else {
14233 info->user_ptr[1] = wdev;
14234 }
14235
14236 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14237 !wdev_running(wdev)) {
14238 if (rtnl)
14239 rtnl_unlock();
14240 return -ENETDOWN;
14241 }
14242
14243 if (dev)
14244 dev_hold(dev);
14245
14246 info->user_ptr[0] = rdev;
14247 }
14248
14249 return 0;
14250 }
14251
14252 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14253 struct genl_info *info)
14254 {
14255 if (info->user_ptr[1]) {
14256 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14257 struct wireless_dev *wdev = info->user_ptr[1];
14258
14259 if (wdev->netdev)
14260 dev_put(wdev->netdev);
14261 } else {
14262 dev_put(info->user_ptr[1]);
14263 }
14264 }
14265
14266 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14267 rtnl_unlock();
14268
14269 /* If needed, clear the netlink message payload from the SKB
14270 * as it might contain key data that shouldn't stick around on
14271 * the heap after the SKB is freed. The netlink message header
14272 * is still needed for further processing, so leave it intact.
14273 */
14274 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14275 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14276
14277 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14278 }
14279 }
14280
14281 static const struct genl_ops nl80211_ops[] = {
14282 {
14283 .cmd = NL80211_CMD_GET_WIPHY,
14284 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285 .doit = nl80211_get_wiphy,
14286 .dumpit = nl80211_dump_wiphy,
14287 .done = nl80211_dump_wiphy_done,
14288 /* can be retrieved by unprivileged users */
14289 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14290 NL80211_FLAG_NEED_RTNL,
14291 },
14292 {
14293 .cmd = NL80211_CMD_SET_WIPHY,
14294 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14295 .doit = nl80211_set_wiphy,
14296 .flags = GENL_UNS_ADMIN_PERM,
14297 .internal_flags = NL80211_FLAG_NEED_RTNL,
14298 },
14299 {
14300 .cmd = NL80211_CMD_GET_INTERFACE,
14301 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14302 .doit = nl80211_get_interface,
14303 .dumpit = nl80211_dump_interface,
14304 /* can be retrieved by unprivileged users */
14305 .internal_flags = NL80211_FLAG_NEED_WDEV |
14306 NL80211_FLAG_NEED_RTNL,
14307 },
14308 {
14309 .cmd = NL80211_CMD_SET_INTERFACE,
14310 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14311 .doit = nl80211_set_interface,
14312 .flags = GENL_UNS_ADMIN_PERM,
14313 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14314 NL80211_FLAG_NEED_RTNL,
14315 },
14316 {
14317 .cmd = NL80211_CMD_NEW_INTERFACE,
14318 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14319 .doit = nl80211_new_interface,
14320 .flags = GENL_UNS_ADMIN_PERM,
14321 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14322 NL80211_FLAG_NEED_RTNL,
14323 },
14324 {
14325 .cmd = NL80211_CMD_DEL_INTERFACE,
14326 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14327 .doit = nl80211_del_interface,
14328 .flags = GENL_UNS_ADMIN_PERM,
14329 .internal_flags = NL80211_FLAG_NEED_WDEV |
14330 NL80211_FLAG_NEED_RTNL,
14331 },
14332 {
14333 .cmd = NL80211_CMD_GET_KEY,
14334 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14335 .doit = nl80211_get_key,
14336 .flags = GENL_UNS_ADMIN_PERM,
14337 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14338 NL80211_FLAG_NEED_RTNL,
14339 },
14340 {
14341 .cmd = NL80211_CMD_SET_KEY,
14342 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14343 .doit = nl80211_set_key,
14344 .flags = GENL_UNS_ADMIN_PERM,
14345 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14346 NL80211_FLAG_NEED_RTNL |
14347 NL80211_FLAG_CLEAR_SKB,
14348 },
14349 {
14350 .cmd = NL80211_CMD_NEW_KEY,
14351 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14352 .doit = nl80211_new_key,
14353 .flags = GENL_UNS_ADMIN_PERM,
14354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14355 NL80211_FLAG_NEED_RTNL |
14356 NL80211_FLAG_CLEAR_SKB,
14357 },
14358 {
14359 .cmd = NL80211_CMD_DEL_KEY,
14360 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14361 .doit = nl80211_del_key,
14362 .flags = GENL_UNS_ADMIN_PERM,
14363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14364 NL80211_FLAG_NEED_RTNL,
14365 },
14366 {
14367 .cmd = NL80211_CMD_SET_BEACON,
14368 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14369 .flags = GENL_UNS_ADMIN_PERM,
14370 .doit = nl80211_set_beacon,
14371 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14372 NL80211_FLAG_NEED_RTNL,
14373 },
14374 {
14375 .cmd = NL80211_CMD_START_AP,
14376 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14377 .flags = GENL_UNS_ADMIN_PERM,
14378 .doit = nl80211_start_ap,
14379 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14380 NL80211_FLAG_NEED_RTNL,
14381 },
14382 {
14383 .cmd = NL80211_CMD_STOP_AP,
14384 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14385 .flags = GENL_UNS_ADMIN_PERM,
14386 .doit = nl80211_stop_ap,
14387 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14388 NL80211_FLAG_NEED_RTNL,
14389 },
14390 {
14391 .cmd = NL80211_CMD_GET_STATION,
14392 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14393 .doit = nl80211_get_station,
14394 .dumpit = nl80211_dump_station,
14395 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14396 NL80211_FLAG_NEED_RTNL,
14397 },
14398 {
14399 .cmd = NL80211_CMD_SET_STATION,
14400 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401 .doit = nl80211_set_station,
14402 .flags = GENL_UNS_ADMIN_PERM,
14403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14404 NL80211_FLAG_NEED_RTNL,
14405 },
14406 {
14407 .cmd = NL80211_CMD_NEW_STATION,
14408 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409 .doit = nl80211_new_station,
14410 .flags = GENL_UNS_ADMIN_PERM,
14411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14412 NL80211_FLAG_NEED_RTNL,
14413 },
14414 {
14415 .cmd = NL80211_CMD_DEL_STATION,
14416 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14417 .doit = nl80211_del_station,
14418 .flags = GENL_UNS_ADMIN_PERM,
14419 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14420 NL80211_FLAG_NEED_RTNL,
14421 },
14422 {
14423 .cmd = NL80211_CMD_GET_MPATH,
14424 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14425 .doit = nl80211_get_mpath,
14426 .dumpit = nl80211_dump_mpath,
14427 .flags = GENL_UNS_ADMIN_PERM,
14428 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14429 NL80211_FLAG_NEED_RTNL,
14430 },
14431 {
14432 .cmd = NL80211_CMD_GET_MPP,
14433 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14434 .doit = nl80211_get_mpp,
14435 .dumpit = nl80211_dump_mpp,
14436 .flags = GENL_UNS_ADMIN_PERM,
14437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438 NL80211_FLAG_NEED_RTNL,
14439 },
14440 {
14441 .cmd = NL80211_CMD_SET_MPATH,
14442 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14443 .doit = nl80211_set_mpath,
14444 .flags = GENL_UNS_ADMIN_PERM,
14445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14446 NL80211_FLAG_NEED_RTNL,
14447 },
14448 {
14449 .cmd = NL80211_CMD_NEW_MPATH,
14450 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14451 .doit = nl80211_new_mpath,
14452 .flags = GENL_UNS_ADMIN_PERM,
14453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14454 NL80211_FLAG_NEED_RTNL,
14455 },
14456 {
14457 .cmd = NL80211_CMD_DEL_MPATH,
14458 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14459 .doit = nl80211_del_mpath,
14460 .flags = GENL_UNS_ADMIN_PERM,
14461 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14462 NL80211_FLAG_NEED_RTNL,
14463 },
14464 {
14465 .cmd = NL80211_CMD_SET_BSS,
14466 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14467 .doit = nl80211_set_bss,
14468 .flags = GENL_UNS_ADMIN_PERM,
14469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14470 NL80211_FLAG_NEED_RTNL,
14471 },
14472 {
14473 .cmd = NL80211_CMD_GET_REG,
14474 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14475 .doit = nl80211_get_reg_do,
14476 .dumpit = nl80211_get_reg_dump,
14477 .internal_flags = NL80211_FLAG_NEED_RTNL,
14478 /* can be retrieved by unprivileged users */
14479 },
14480 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14481 {
14482 .cmd = NL80211_CMD_SET_REG,
14483 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14484 .doit = nl80211_set_reg,
14485 .flags = GENL_ADMIN_PERM,
14486 .internal_flags = NL80211_FLAG_NEED_RTNL,
14487 },
14488 #endif
14489 {
14490 .cmd = NL80211_CMD_REQ_SET_REG,
14491 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14492 .doit = nl80211_req_set_reg,
14493 .flags = GENL_ADMIN_PERM,
14494 },
14495 {
14496 .cmd = NL80211_CMD_RELOAD_REGDB,
14497 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14498 .doit = nl80211_reload_regdb,
14499 .flags = GENL_ADMIN_PERM,
14500 },
14501 {
14502 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14503 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14504 .doit = nl80211_get_mesh_config,
14505 /* can be retrieved by unprivileged users */
14506 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14507 NL80211_FLAG_NEED_RTNL,
14508 },
14509 {
14510 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14511 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14512 .doit = nl80211_update_mesh_config,
14513 .flags = GENL_UNS_ADMIN_PERM,
14514 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14515 NL80211_FLAG_NEED_RTNL,
14516 },
14517 {
14518 .cmd = NL80211_CMD_TRIGGER_SCAN,
14519 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14520 .doit = nl80211_trigger_scan,
14521 .flags = GENL_UNS_ADMIN_PERM,
14522 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14523 NL80211_FLAG_NEED_RTNL,
14524 },
14525 {
14526 .cmd = NL80211_CMD_ABORT_SCAN,
14527 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14528 .doit = nl80211_abort_scan,
14529 .flags = GENL_UNS_ADMIN_PERM,
14530 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14531 NL80211_FLAG_NEED_RTNL,
14532 },
14533 {
14534 .cmd = NL80211_CMD_GET_SCAN,
14535 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14536 .dumpit = nl80211_dump_scan,
14537 },
14538 {
14539 .cmd = NL80211_CMD_START_SCHED_SCAN,
14540 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14541 .doit = nl80211_start_sched_scan,
14542 .flags = GENL_UNS_ADMIN_PERM,
14543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14544 NL80211_FLAG_NEED_RTNL,
14545 },
14546 {
14547 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14548 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14549 .doit = nl80211_stop_sched_scan,
14550 .flags = GENL_UNS_ADMIN_PERM,
14551 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14552 NL80211_FLAG_NEED_RTNL,
14553 },
14554 {
14555 .cmd = NL80211_CMD_AUTHENTICATE,
14556 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14557 .doit = nl80211_authenticate,
14558 .flags = GENL_UNS_ADMIN_PERM,
14559 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14560 NL80211_FLAG_NEED_RTNL |
14561 NL80211_FLAG_CLEAR_SKB,
14562 },
14563 {
14564 .cmd = NL80211_CMD_ASSOCIATE,
14565 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14566 .doit = nl80211_associate,
14567 .flags = GENL_UNS_ADMIN_PERM,
14568 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14569 NL80211_FLAG_NEED_RTNL |
14570 NL80211_FLAG_CLEAR_SKB,
14571 },
14572 {
14573 .cmd = NL80211_CMD_DEAUTHENTICATE,
14574 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14575 .doit = nl80211_deauthenticate,
14576 .flags = GENL_UNS_ADMIN_PERM,
14577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14578 NL80211_FLAG_NEED_RTNL,
14579 },
14580 {
14581 .cmd = NL80211_CMD_DISASSOCIATE,
14582 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14583 .doit = nl80211_disassociate,
14584 .flags = GENL_UNS_ADMIN_PERM,
14585 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14586 NL80211_FLAG_NEED_RTNL,
14587 },
14588 {
14589 .cmd = NL80211_CMD_JOIN_IBSS,
14590 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14591 .doit = nl80211_join_ibss,
14592 .flags = GENL_UNS_ADMIN_PERM,
14593 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14594 NL80211_FLAG_NEED_RTNL,
14595 },
14596 {
14597 .cmd = NL80211_CMD_LEAVE_IBSS,
14598 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14599 .doit = nl80211_leave_ibss,
14600 .flags = GENL_UNS_ADMIN_PERM,
14601 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14602 NL80211_FLAG_NEED_RTNL,
14603 },
14604 #ifdef CONFIG_NL80211_TESTMODE
14605 {
14606 .cmd = NL80211_CMD_TESTMODE,
14607 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14608 .doit = nl80211_testmode_do,
14609 .dumpit = nl80211_testmode_dump,
14610 .flags = GENL_UNS_ADMIN_PERM,
14611 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14612 NL80211_FLAG_NEED_RTNL,
14613 },
14614 #endif
14615 {
14616 .cmd = NL80211_CMD_CONNECT,
14617 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14618 .doit = nl80211_connect,
14619 .flags = GENL_UNS_ADMIN_PERM,
14620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14621 NL80211_FLAG_NEED_RTNL |
14622 NL80211_FLAG_CLEAR_SKB,
14623 },
14624 {
14625 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14626 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14627 .doit = nl80211_update_connect_params,
14628 .flags = GENL_ADMIN_PERM,
14629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14630 NL80211_FLAG_NEED_RTNL |
14631 NL80211_FLAG_CLEAR_SKB,
14632 },
14633 {
14634 .cmd = NL80211_CMD_DISCONNECT,
14635 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636 .doit = nl80211_disconnect,
14637 .flags = GENL_UNS_ADMIN_PERM,
14638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14639 NL80211_FLAG_NEED_RTNL,
14640 },
14641 {
14642 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14643 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14644 .doit = nl80211_wiphy_netns,
14645 .flags = GENL_UNS_ADMIN_PERM,
14646 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14647 NL80211_FLAG_NEED_RTNL,
14648 },
14649 {
14650 .cmd = NL80211_CMD_GET_SURVEY,
14651 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14652 .dumpit = nl80211_dump_survey,
14653 },
14654 {
14655 .cmd = NL80211_CMD_SET_PMKSA,
14656 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14657 .doit = nl80211_setdel_pmksa,
14658 .flags = GENL_UNS_ADMIN_PERM,
14659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14660 NL80211_FLAG_NEED_RTNL |
14661 NL80211_FLAG_CLEAR_SKB,
14662 },
14663 {
14664 .cmd = NL80211_CMD_DEL_PMKSA,
14665 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14666 .doit = nl80211_setdel_pmksa,
14667 .flags = GENL_UNS_ADMIN_PERM,
14668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14669 NL80211_FLAG_NEED_RTNL,
14670 },
14671 {
14672 .cmd = NL80211_CMD_FLUSH_PMKSA,
14673 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674 .doit = nl80211_flush_pmksa,
14675 .flags = GENL_UNS_ADMIN_PERM,
14676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14677 NL80211_FLAG_NEED_RTNL,
14678 },
14679 {
14680 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14681 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682 .doit = nl80211_remain_on_channel,
14683 .flags = GENL_UNS_ADMIN_PERM,
14684 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14685 NL80211_FLAG_NEED_RTNL,
14686 },
14687 {
14688 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14689 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690 .doit = nl80211_cancel_remain_on_channel,
14691 .flags = GENL_UNS_ADMIN_PERM,
14692 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14693 NL80211_FLAG_NEED_RTNL,
14694 },
14695 {
14696 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14697 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14698 .doit = nl80211_set_tx_bitrate_mask,
14699 .flags = GENL_UNS_ADMIN_PERM,
14700 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14701 NL80211_FLAG_NEED_RTNL,
14702 },
14703 {
14704 .cmd = NL80211_CMD_REGISTER_FRAME,
14705 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14706 .doit = nl80211_register_mgmt,
14707 .flags = GENL_UNS_ADMIN_PERM,
14708 .internal_flags = NL80211_FLAG_NEED_WDEV |
14709 NL80211_FLAG_NEED_RTNL,
14710 },
14711 {
14712 .cmd = NL80211_CMD_FRAME,
14713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14714 .doit = nl80211_tx_mgmt,
14715 .flags = GENL_UNS_ADMIN_PERM,
14716 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14717 NL80211_FLAG_NEED_RTNL,
14718 },
14719 {
14720 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14722 .doit = nl80211_tx_mgmt_cancel_wait,
14723 .flags = GENL_UNS_ADMIN_PERM,
14724 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14725 NL80211_FLAG_NEED_RTNL,
14726 },
14727 {
14728 .cmd = NL80211_CMD_SET_POWER_SAVE,
14729 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14730 .doit = nl80211_set_power_save,
14731 .flags = GENL_UNS_ADMIN_PERM,
14732 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14733 NL80211_FLAG_NEED_RTNL,
14734 },
14735 {
14736 .cmd = NL80211_CMD_GET_POWER_SAVE,
14737 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14738 .doit = nl80211_get_power_save,
14739 /* can be retrieved by unprivileged users */
14740 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14741 NL80211_FLAG_NEED_RTNL,
14742 },
14743 {
14744 .cmd = NL80211_CMD_SET_CQM,
14745 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14746 .doit = nl80211_set_cqm,
14747 .flags = GENL_UNS_ADMIN_PERM,
14748 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14749 NL80211_FLAG_NEED_RTNL,
14750 },
14751 {
14752 .cmd = NL80211_CMD_SET_CHANNEL,
14753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14754 .doit = nl80211_set_channel,
14755 .flags = GENL_UNS_ADMIN_PERM,
14756 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14757 NL80211_FLAG_NEED_RTNL,
14758 },
14759 {
14760 .cmd = NL80211_CMD_SET_WDS_PEER,
14761 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14762 .doit = nl80211_set_wds_peer,
14763 .flags = GENL_UNS_ADMIN_PERM,
14764 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14765 NL80211_FLAG_NEED_RTNL,
14766 },
14767 {
14768 .cmd = NL80211_CMD_JOIN_MESH,
14769 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14770 .doit = nl80211_join_mesh,
14771 .flags = GENL_UNS_ADMIN_PERM,
14772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14773 NL80211_FLAG_NEED_RTNL,
14774 },
14775 {
14776 .cmd = NL80211_CMD_LEAVE_MESH,
14777 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14778 .doit = nl80211_leave_mesh,
14779 .flags = GENL_UNS_ADMIN_PERM,
14780 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14781 NL80211_FLAG_NEED_RTNL,
14782 },
14783 {
14784 .cmd = NL80211_CMD_JOIN_OCB,
14785 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14786 .doit = nl80211_join_ocb,
14787 .flags = GENL_UNS_ADMIN_PERM,
14788 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14789 NL80211_FLAG_NEED_RTNL,
14790 },
14791 {
14792 .cmd = NL80211_CMD_LEAVE_OCB,
14793 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14794 .doit = nl80211_leave_ocb,
14795 .flags = GENL_UNS_ADMIN_PERM,
14796 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14797 NL80211_FLAG_NEED_RTNL,
14798 },
14799 #ifdef CONFIG_PM
14800 {
14801 .cmd = NL80211_CMD_GET_WOWLAN,
14802 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14803 .doit = nl80211_get_wowlan,
14804 /* can be retrieved by unprivileged users */
14805 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14806 NL80211_FLAG_NEED_RTNL,
14807 },
14808 {
14809 .cmd = NL80211_CMD_SET_WOWLAN,
14810 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14811 .doit = nl80211_set_wowlan,
14812 .flags = GENL_UNS_ADMIN_PERM,
14813 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14814 NL80211_FLAG_NEED_RTNL,
14815 },
14816 #endif
14817 {
14818 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14820 .doit = nl80211_set_rekey_data,
14821 .flags = GENL_UNS_ADMIN_PERM,
14822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14823 NL80211_FLAG_NEED_RTNL |
14824 NL80211_FLAG_CLEAR_SKB,
14825 },
14826 {
14827 .cmd = NL80211_CMD_TDLS_MGMT,
14828 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14829 .doit = nl80211_tdls_mgmt,
14830 .flags = GENL_UNS_ADMIN_PERM,
14831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14832 NL80211_FLAG_NEED_RTNL,
14833 },
14834 {
14835 .cmd = NL80211_CMD_TDLS_OPER,
14836 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14837 .doit = nl80211_tdls_oper,
14838 .flags = GENL_UNS_ADMIN_PERM,
14839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14840 NL80211_FLAG_NEED_RTNL,
14841 },
14842 {
14843 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14844 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14845 .doit = nl80211_register_unexpected_frame,
14846 .flags = GENL_UNS_ADMIN_PERM,
14847 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14848 NL80211_FLAG_NEED_RTNL,
14849 },
14850 {
14851 .cmd = NL80211_CMD_PROBE_CLIENT,
14852 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14853 .doit = nl80211_probe_client,
14854 .flags = GENL_UNS_ADMIN_PERM,
14855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14856 NL80211_FLAG_NEED_RTNL,
14857 },
14858 {
14859 .cmd = NL80211_CMD_REGISTER_BEACONS,
14860 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14861 .doit = nl80211_register_beacons,
14862 .flags = GENL_UNS_ADMIN_PERM,
14863 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14864 NL80211_FLAG_NEED_RTNL,
14865 },
14866 {
14867 .cmd = NL80211_CMD_SET_NOACK_MAP,
14868 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14869 .doit = nl80211_set_noack_map,
14870 .flags = GENL_UNS_ADMIN_PERM,
14871 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14872 NL80211_FLAG_NEED_RTNL,
14873 },
14874 {
14875 .cmd = NL80211_CMD_START_P2P_DEVICE,
14876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14877 .doit = nl80211_start_p2p_device,
14878 .flags = GENL_UNS_ADMIN_PERM,
14879 .internal_flags = NL80211_FLAG_NEED_WDEV |
14880 NL80211_FLAG_NEED_RTNL,
14881 },
14882 {
14883 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14884 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14885 .doit = nl80211_stop_p2p_device,
14886 .flags = GENL_UNS_ADMIN_PERM,
14887 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14888 NL80211_FLAG_NEED_RTNL,
14889 },
14890 {
14891 .cmd = NL80211_CMD_START_NAN,
14892 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14893 .doit = nl80211_start_nan,
14894 .flags = GENL_ADMIN_PERM,
14895 .internal_flags = NL80211_FLAG_NEED_WDEV |
14896 NL80211_FLAG_NEED_RTNL,
14897 },
14898 {
14899 .cmd = NL80211_CMD_STOP_NAN,
14900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14901 .doit = nl80211_stop_nan,
14902 .flags = GENL_ADMIN_PERM,
14903 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14904 NL80211_FLAG_NEED_RTNL,
14905 },
14906 {
14907 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14908 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14909 .doit = nl80211_nan_add_func,
14910 .flags = GENL_ADMIN_PERM,
14911 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14912 NL80211_FLAG_NEED_RTNL,
14913 },
14914 {
14915 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14916 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14917 .doit = nl80211_nan_del_func,
14918 .flags = GENL_ADMIN_PERM,
14919 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14920 NL80211_FLAG_NEED_RTNL,
14921 },
14922 {
14923 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14924 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14925 .doit = nl80211_nan_change_config,
14926 .flags = GENL_ADMIN_PERM,
14927 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14928 NL80211_FLAG_NEED_RTNL,
14929 },
14930 {
14931 .cmd = NL80211_CMD_SET_MCAST_RATE,
14932 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14933 .doit = nl80211_set_mcast_rate,
14934 .flags = GENL_UNS_ADMIN_PERM,
14935 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14936 NL80211_FLAG_NEED_RTNL,
14937 },
14938 {
14939 .cmd = NL80211_CMD_SET_MAC_ACL,
14940 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14941 .doit = nl80211_set_mac_acl,
14942 .flags = GENL_UNS_ADMIN_PERM,
14943 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14944 NL80211_FLAG_NEED_RTNL,
14945 },
14946 {
14947 .cmd = NL80211_CMD_RADAR_DETECT,
14948 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14949 .doit = nl80211_start_radar_detection,
14950 .flags = GENL_UNS_ADMIN_PERM,
14951 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14952 NL80211_FLAG_NEED_RTNL,
14953 },
14954 {
14955 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14956 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14957 .doit = nl80211_get_protocol_features,
14958 },
14959 {
14960 .cmd = NL80211_CMD_UPDATE_FT_IES,
14961 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14962 .doit = nl80211_update_ft_ies,
14963 .flags = GENL_UNS_ADMIN_PERM,
14964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14965 NL80211_FLAG_NEED_RTNL,
14966 },
14967 {
14968 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14969 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14970 .doit = nl80211_crit_protocol_start,
14971 .flags = GENL_UNS_ADMIN_PERM,
14972 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14973 NL80211_FLAG_NEED_RTNL,
14974 },
14975 {
14976 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14978 .doit = nl80211_crit_protocol_stop,
14979 .flags = GENL_UNS_ADMIN_PERM,
14980 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14981 NL80211_FLAG_NEED_RTNL,
14982 },
14983 {
14984 .cmd = NL80211_CMD_GET_COALESCE,
14985 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14986 .doit = nl80211_get_coalesce,
14987 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14988 NL80211_FLAG_NEED_RTNL,
14989 },
14990 {
14991 .cmd = NL80211_CMD_SET_COALESCE,
14992 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993 .doit = nl80211_set_coalesce,
14994 .flags = GENL_UNS_ADMIN_PERM,
14995 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14996 NL80211_FLAG_NEED_RTNL,
14997 },
14998 {
14999 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15000 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001 .doit = nl80211_channel_switch,
15002 .flags = GENL_UNS_ADMIN_PERM,
15003 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15004 NL80211_FLAG_NEED_RTNL,
15005 },
15006 {
15007 .cmd = NL80211_CMD_VENDOR,
15008 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009 .doit = nl80211_vendor_cmd,
15010 .dumpit = nl80211_vendor_cmd_dump,
15011 .flags = GENL_UNS_ADMIN_PERM,
15012 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15013 NL80211_FLAG_NEED_RTNL |
15014 NL80211_FLAG_CLEAR_SKB,
15015 },
15016 {
15017 .cmd = NL80211_CMD_SET_QOS_MAP,
15018 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15019 .doit = nl80211_set_qos_map,
15020 .flags = GENL_UNS_ADMIN_PERM,
15021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15022 NL80211_FLAG_NEED_RTNL,
15023 },
15024 {
15025 .cmd = NL80211_CMD_ADD_TX_TS,
15026 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027 .doit = nl80211_add_tx_ts,
15028 .flags = GENL_UNS_ADMIN_PERM,
15029 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15030 NL80211_FLAG_NEED_RTNL,
15031 },
15032 {
15033 .cmd = NL80211_CMD_DEL_TX_TS,
15034 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15035 .doit = nl80211_del_tx_ts,
15036 .flags = GENL_UNS_ADMIN_PERM,
15037 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15038 NL80211_FLAG_NEED_RTNL,
15039 },
15040 {
15041 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15042 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15043 .doit = nl80211_tdls_channel_switch,
15044 .flags = GENL_UNS_ADMIN_PERM,
15045 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15046 NL80211_FLAG_NEED_RTNL,
15047 },
15048 {
15049 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15050 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15051 .doit = nl80211_tdls_cancel_channel_switch,
15052 .flags = GENL_UNS_ADMIN_PERM,
15053 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15054 NL80211_FLAG_NEED_RTNL,
15055 },
15056 {
15057 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15058 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15059 .doit = nl80211_set_multicast_to_unicast,
15060 .flags = GENL_UNS_ADMIN_PERM,
15061 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15062 NL80211_FLAG_NEED_RTNL,
15063 },
15064 {
15065 .cmd = NL80211_CMD_SET_PMK,
15066 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15067 .doit = nl80211_set_pmk,
15068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15069 NL80211_FLAG_NEED_RTNL |
15070 NL80211_FLAG_CLEAR_SKB,
15071 },
15072 {
15073 .cmd = NL80211_CMD_DEL_PMK,
15074 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15075 .doit = nl80211_del_pmk,
15076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15077 NL80211_FLAG_NEED_RTNL,
15078 },
15079 {
15080 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15081 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15082 .doit = nl80211_external_auth,
15083 .flags = GENL_ADMIN_PERM,
15084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15085 NL80211_FLAG_NEED_RTNL,
15086 },
15087 {
15088 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15089 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15090 .doit = nl80211_tx_control_port,
15091 .flags = GENL_UNS_ADMIN_PERM,
15092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15093 NL80211_FLAG_NEED_RTNL,
15094 },
15095 {
15096 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15097 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15098 .doit = nl80211_get_ftm_responder_stats,
15099 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15100 NL80211_FLAG_NEED_RTNL,
15101 },
15102 {
15103 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15104 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15105 .doit = nl80211_pmsr_start,
15106 .flags = GENL_UNS_ADMIN_PERM,
15107 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15108 NL80211_FLAG_NEED_RTNL,
15109 },
15110 {
15111 .cmd = NL80211_CMD_NOTIFY_RADAR,
15112 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15113 .doit = nl80211_notify_radar_detection,
15114 .flags = GENL_UNS_ADMIN_PERM,
15115 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15116 NL80211_FLAG_NEED_RTNL,
15117 },
15118 {
15119 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15120 .doit = nl80211_update_owe_info,
15121 .flags = GENL_ADMIN_PERM,
15122 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15123 NL80211_FLAG_NEED_RTNL,
15124 },
15125 {
15126 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15127 .doit = nl80211_probe_mesh_link,
15128 .flags = GENL_UNS_ADMIN_PERM,
15129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15130 NL80211_FLAG_NEED_RTNL,
15131 },
15132 {
15133 .cmd = NL80211_CMD_SET_TID_CONFIG,
15134 .doit = nl80211_set_tid_config,
15135 .flags = GENL_UNS_ADMIN_PERM,
15136 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15137 NL80211_FLAG_NEED_RTNL,
15138 },
15139 };
15140
15141 static struct genl_family nl80211_fam __ro_after_init = {
15142 .name = NL80211_GENL_NAME, /* have users key off the name instead */
15143 .hdrsize = 0, /* no private header */
15144 .version = 1, /* no particular meaning now */
15145 .maxattr = NL80211_ATTR_MAX,
15146 .policy = nl80211_policy,
15147 .netnsok = true,
15148 .pre_doit = nl80211_pre_doit,
15149 .post_doit = nl80211_post_doit,
15150 .module = THIS_MODULE,
15151 .ops = nl80211_ops,
15152 .n_ops = ARRAY_SIZE(nl80211_ops),
15153 .mcgrps = nl80211_mcgrps,
15154 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15155 .parallel_ops = true,
15156 };
15157
15158 /* notification functions */
15159
15160 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15161 enum nl80211_commands cmd)
15162 {
15163 struct sk_buff *msg;
15164 struct nl80211_dump_wiphy_state state = {};
15165
15166 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15167 cmd != NL80211_CMD_DEL_WIPHY);
15168
15169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15170 if (!msg)
15171 return;
15172
15173 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15174 nlmsg_free(msg);
15175 return;
15176 }
15177
15178 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15179 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15180 }
15181
15182 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15183 struct wireless_dev *wdev,
15184 enum nl80211_commands cmd)
15185 {
15186 struct sk_buff *msg;
15187
15188 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15189 if (!msg)
15190 return;
15191
15192 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15193 nlmsg_free(msg);
15194 return;
15195 }
15196
15197 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15198 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15199 }
15200
15201 static int nl80211_add_scan_req(struct sk_buff *msg,
15202 struct cfg80211_registered_device *rdev)
15203 {
15204 struct cfg80211_scan_request *req = rdev->scan_req;
15205 struct nlattr *nest;
15206 int i;
15207
15208 if (WARN_ON(!req))
15209 return 0;
15210
15211 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15212 if (!nest)
15213 goto nla_put_failure;
15214 for (i = 0; i < req->n_ssids; i++) {
15215 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15216 goto nla_put_failure;
15217 }
15218 nla_nest_end(msg, nest);
15219
15220 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
15221 if (!nest)
15222 goto nla_put_failure;
15223 for (i = 0; i < req->n_channels; i++) {
15224 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15225 goto nla_put_failure;
15226 }
15227 nla_nest_end(msg, nest);
15228
15229 if (req->ie &&
15230 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15231 goto nla_put_failure;
15232
15233 if (req->flags &&
15234 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15235 goto nla_put_failure;
15236
15237 if (req->info.scan_start_tsf &&
15238 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15239 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15240 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15241 req->info.tsf_bssid)))
15242 goto nla_put_failure;
15243
15244 return 0;
15245 nla_put_failure:
15246 return -ENOBUFS;
15247 }
15248
15249 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15250 struct cfg80211_registered_device *rdev,
15251 struct wireless_dev *wdev,
15252 u32 portid, u32 seq, int flags,
15253 u32 cmd)
15254 {
15255 void *hdr;
15256
15257 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15258 if (!hdr)
15259 return -1;
15260
15261 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15262 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15263 wdev->netdev->ifindex)) ||
15264 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15265 NL80211_ATTR_PAD))
15266 goto nla_put_failure;
15267
15268 /* ignore errors and send incomplete event anyway */
15269 nl80211_add_scan_req(msg, rdev);
15270
15271 genlmsg_end(msg, hdr);
15272 return 0;
15273
15274 nla_put_failure:
15275 genlmsg_cancel(msg, hdr);
15276 return -EMSGSIZE;
15277 }
15278
15279 static int
15280 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15281 struct cfg80211_sched_scan_request *req, u32 cmd)
15282 {
15283 void *hdr;
15284
15285 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15286 if (!hdr)
15287 return -1;
15288
15289 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15290 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15291 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15292 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15293 NL80211_ATTR_PAD))
15294 goto nla_put_failure;
15295
15296 genlmsg_end(msg, hdr);
15297 return 0;
15298
15299 nla_put_failure:
15300 genlmsg_cancel(msg, hdr);
15301 return -EMSGSIZE;
15302 }
15303
15304 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15305 struct wireless_dev *wdev)
15306 {
15307 struct sk_buff *msg;
15308
15309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15310 if (!msg)
15311 return;
15312
15313 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15314 NL80211_CMD_TRIGGER_SCAN) < 0) {
15315 nlmsg_free(msg);
15316 return;
15317 }
15318
15319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15320 NL80211_MCGRP_SCAN, GFP_KERNEL);
15321 }
15322
15323 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15324 struct wireless_dev *wdev, bool aborted)
15325 {
15326 struct sk_buff *msg;
15327
15328 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15329 if (!msg)
15330 return NULL;
15331
15332 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15333 aborted ? NL80211_CMD_SCAN_ABORTED :
15334 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15335 nlmsg_free(msg);
15336 return NULL;
15337 }
15338
15339 return msg;
15340 }
15341
15342 /* send message created by nl80211_build_scan_msg() */
15343 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15344 struct sk_buff *msg)
15345 {
15346 if (!msg)
15347 return;
15348
15349 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15350 NL80211_MCGRP_SCAN, GFP_KERNEL);
15351 }
15352
15353 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15354 {
15355 struct sk_buff *msg;
15356
15357 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15358 if (!msg)
15359 return;
15360
15361 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15362 nlmsg_free(msg);
15363 return;
15364 }
15365
15366 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15367 NL80211_MCGRP_SCAN, GFP_KERNEL);
15368 }
15369
15370 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15371 struct regulatory_request *request)
15372 {
15373 /* Userspace can always count this one always being set */
15374 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15375 goto nla_put_failure;
15376
15377 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15378 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15379 NL80211_REGDOM_TYPE_WORLD))
15380 goto nla_put_failure;
15381 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15382 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15383 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15384 goto nla_put_failure;
15385 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15386 request->intersect) {
15387 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15388 NL80211_REGDOM_TYPE_INTERSECTION))
15389 goto nla_put_failure;
15390 } else {
15391 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15392 NL80211_REGDOM_TYPE_COUNTRY) ||
15393 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15394 request->alpha2))
15395 goto nla_put_failure;
15396 }
15397
15398 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15399 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15400
15401 if (wiphy &&
15402 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15403 goto nla_put_failure;
15404
15405 if (wiphy &&
15406 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15407 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15408 goto nla_put_failure;
15409 }
15410
15411 return true;
15412
15413 nla_put_failure:
15414 return false;
15415 }
15416
15417 /*
15418 * This can happen on global regulatory changes or device specific settings
15419 * based on custom regulatory domains.
15420 */
15421 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15422 struct regulatory_request *request)
15423 {
15424 struct sk_buff *msg;
15425 void *hdr;
15426
15427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15428 if (!msg)
15429 return;
15430
15431 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15432 if (!hdr)
15433 goto nla_put_failure;
15434
15435 if (!nl80211_reg_change_event_fill(msg, request))
15436 goto nla_put_failure;
15437
15438 genlmsg_end(msg, hdr);
15439
15440 rcu_read_lock();
15441 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15442 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15443 rcu_read_unlock();
15444
15445 return;
15446
15447 nla_put_failure:
15448 nlmsg_free(msg);
15449 }
15450
15451 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15452 struct net_device *netdev,
15453 const u8 *buf, size_t len,
15454 enum nl80211_commands cmd, gfp_t gfp,
15455 int uapsd_queues, const u8 *req_ies,
15456 size_t req_ies_len)
15457 {
15458 struct sk_buff *msg;
15459 void *hdr;
15460
15461 msg = nlmsg_new(100 + len + req_ies_len, gfp);
15462 if (!msg)
15463 return;
15464
15465 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15466 if (!hdr) {
15467 nlmsg_free(msg);
15468 return;
15469 }
15470
15471 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15472 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15473 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15474 (req_ies &&
15475 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15476 goto nla_put_failure;
15477
15478 if (uapsd_queues >= 0) {
15479 struct nlattr *nla_wmm =
15480 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15481 if (!nla_wmm)
15482 goto nla_put_failure;
15483
15484 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15485 uapsd_queues))
15486 goto nla_put_failure;
15487
15488 nla_nest_end(msg, nla_wmm);
15489 }
15490
15491 genlmsg_end(msg, hdr);
15492
15493 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15494 NL80211_MCGRP_MLME, gfp);
15495 return;
15496
15497 nla_put_failure:
15498 nlmsg_free(msg);
15499 }
15500
15501 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15502 struct net_device *netdev, const u8 *buf,
15503 size_t len, gfp_t gfp)
15504 {
15505 nl80211_send_mlme_event(rdev, netdev, buf, len,
15506 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15507 }
15508
15509 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15510 struct net_device *netdev, const u8 *buf,
15511 size_t len, gfp_t gfp, int uapsd_queues,
15512 const u8 *req_ies, size_t req_ies_len)
15513 {
15514 nl80211_send_mlme_event(rdev, netdev, buf, len,
15515 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15516 req_ies, req_ies_len);
15517 }
15518
15519 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15520 struct net_device *netdev, const u8 *buf,
15521 size_t len, gfp_t gfp)
15522 {
15523 nl80211_send_mlme_event(rdev, netdev, buf, len,
15524 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15525 }
15526
15527 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15528 struct net_device *netdev, const u8 *buf,
15529 size_t len, gfp_t gfp)
15530 {
15531 nl80211_send_mlme_event(rdev, netdev, buf, len,
15532 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15533 }
15534
15535 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15536 size_t len)
15537 {
15538 struct wireless_dev *wdev = dev->ieee80211_ptr;
15539 struct wiphy *wiphy = wdev->wiphy;
15540 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15541 const struct ieee80211_mgmt *mgmt = (void *)buf;
15542 u32 cmd;
15543
15544 if (WARN_ON(len < 2))
15545 return;
15546
15547 if (ieee80211_is_deauth(mgmt->frame_control))
15548 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15549 else
15550 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15551
15552 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15553 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15554 NULL, 0);
15555 }
15556 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15557
15558 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15559 struct net_device *netdev, int cmd,
15560 const u8 *addr, gfp_t gfp)
15561 {
15562 struct sk_buff *msg;
15563 void *hdr;
15564
15565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15566 if (!msg)
15567 return;
15568
15569 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15570 if (!hdr) {
15571 nlmsg_free(msg);
15572 return;
15573 }
15574
15575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15576 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15577 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15578 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15579 goto nla_put_failure;
15580
15581 genlmsg_end(msg, hdr);
15582
15583 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15584 NL80211_MCGRP_MLME, gfp);
15585 return;
15586
15587 nla_put_failure:
15588 nlmsg_free(msg);
15589 }
15590
15591 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15592 struct net_device *netdev, const u8 *addr,
15593 gfp_t gfp)
15594 {
15595 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15596 addr, gfp);
15597 }
15598
15599 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15600 struct net_device *netdev, const u8 *addr,
15601 gfp_t gfp)
15602 {
15603 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15604 addr, gfp);
15605 }
15606
15607 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15608 struct net_device *netdev,
15609 struct cfg80211_connect_resp_params *cr,
15610 gfp_t gfp)
15611 {
15612 struct sk_buff *msg;
15613 void *hdr;
15614
15615 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15616 cr->fils.kek_len + cr->fils.pmk_len +
15617 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15618 if (!msg)
15619 return;
15620
15621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15622 if (!hdr) {
15623 nlmsg_free(msg);
15624 return;
15625 }
15626
15627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15628 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15629 (cr->bssid &&
15630 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15631 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15632 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15633 cr->status) ||
15634 (cr->status < 0 &&
15635 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15636 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15637 cr->timeout_reason))) ||
15638 (cr->req_ie &&
15639 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15640 (cr->resp_ie &&
15641 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15642 cr->resp_ie)) ||
15643 (cr->fils.update_erp_next_seq_num &&
15644 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15645 cr->fils.erp_next_seq_num)) ||
15646 (cr->status == WLAN_STATUS_SUCCESS &&
15647 ((cr->fils.kek &&
15648 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15649 cr->fils.kek)) ||
15650 (cr->fils.pmk &&
15651 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15652 (cr->fils.pmkid &&
15653 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15654 goto nla_put_failure;
15655
15656 genlmsg_end(msg, hdr);
15657
15658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15659 NL80211_MCGRP_MLME, gfp);
15660 return;
15661
15662 nla_put_failure:
15663 nlmsg_free(msg);
15664 }
15665
15666 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15667 struct net_device *netdev,
15668 struct cfg80211_roam_info *info, gfp_t gfp)
15669 {
15670 struct sk_buff *msg;
15671 void *hdr;
15672 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15673
15674 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15675 info->fils.kek_len + info->fils.pmk_len +
15676 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15677 if (!msg)
15678 return;
15679
15680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15681 if (!hdr) {
15682 nlmsg_free(msg);
15683 return;
15684 }
15685
15686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15689 (info->req_ie &&
15690 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15691 info->req_ie)) ||
15692 (info->resp_ie &&
15693 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15694 info->resp_ie)) ||
15695 (info->fils.update_erp_next_seq_num &&
15696 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15697 info->fils.erp_next_seq_num)) ||
15698 (info->fils.kek &&
15699 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15700 info->fils.kek)) ||
15701 (info->fils.pmk &&
15702 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15703 (info->fils.pmkid &&
15704 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15705 goto nla_put_failure;
15706
15707 genlmsg_end(msg, hdr);
15708
15709 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15710 NL80211_MCGRP_MLME, gfp);
15711 return;
15712
15713 nla_put_failure:
15714 nlmsg_free(msg);
15715 }
15716
15717 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15718 struct net_device *netdev, const u8 *bssid)
15719 {
15720 struct sk_buff *msg;
15721 void *hdr;
15722
15723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15724 if (!msg)
15725 return;
15726
15727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15728 if (!hdr) {
15729 nlmsg_free(msg);
15730 return;
15731 }
15732
15733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15734 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15735 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15736 goto nla_put_failure;
15737
15738 genlmsg_end(msg, hdr);
15739
15740 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15741 NL80211_MCGRP_MLME, GFP_KERNEL);
15742 return;
15743
15744 nla_put_failure:
15745 nlmsg_free(msg);
15746 }
15747
15748 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15749 struct net_device *netdev, u16 reason,
15750 const u8 *ie, size_t ie_len, bool from_ap)
15751 {
15752 struct sk_buff *msg;
15753 void *hdr;
15754
15755 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15756 if (!msg)
15757 return;
15758
15759 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15760 if (!hdr) {
15761 nlmsg_free(msg);
15762 return;
15763 }
15764
15765 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15766 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15767 (reason &&
15768 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15769 (from_ap &&
15770 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15771 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15772 goto nla_put_failure;
15773
15774 genlmsg_end(msg, hdr);
15775
15776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15777 NL80211_MCGRP_MLME, GFP_KERNEL);
15778 return;
15779
15780 nla_put_failure:
15781 nlmsg_free(msg);
15782 }
15783
15784 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15785 struct net_device *netdev, const u8 *bssid,
15786 gfp_t gfp)
15787 {
15788 struct sk_buff *msg;
15789 void *hdr;
15790
15791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15792 if (!msg)
15793 return;
15794
15795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15796 if (!hdr) {
15797 nlmsg_free(msg);
15798 return;
15799 }
15800
15801 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15802 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15804 goto nla_put_failure;
15805
15806 genlmsg_end(msg, hdr);
15807
15808 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15809 NL80211_MCGRP_MLME, gfp);
15810 return;
15811
15812 nla_put_failure:
15813 nlmsg_free(msg);
15814 }
15815
15816 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15817 const u8 *ie, u8 ie_len,
15818 int sig_dbm, gfp_t gfp)
15819 {
15820 struct wireless_dev *wdev = dev->ieee80211_ptr;
15821 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15822 struct sk_buff *msg;
15823 void *hdr;
15824
15825 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15826 return;
15827
15828 trace_cfg80211_notify_new_peer_candidate(dev, addr);
15829
15830 msg = nlmsg_new(100 + ie_len, gfp);
15831 if (!msg)
15832 return;
15833
15834 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15835 if (!hdr) {
15836 nlmsg_free(msg);
15837 return;
15838 }
15839
15840 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15841 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15842 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15843 (ie_len && ie &&
15844 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15845 (sig_dbm &&
15846 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15847 goto nla_put_failure;
15848
15849 genlmsg_end(msg, hdr);
15850
15851 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15852 NL80211_MCGRP_MLME, gfp);
15853 return;
15854
15855 nla_put_failure:
15856 nlmsg_free(msg);
15857 }
15858 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15859
15860 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15861 struct net_device *netdev, const u8 *addr,
15862 enum nl80211_key_type key_type, int key_id,
15863 const u8 *tsc, gfp_t gfp)
15864 {
15865 struct sk_buff *msg;
15866 void *hdr;
15867
15868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15869 if (!msg)
15870 return;
15871
15872 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15873 if (!hdr) {
15874 nlmsg_free(msg);
15875 return;
15876 }
15877
15878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15880 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15881 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15882 (key_id != -1 &&
15883 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15884 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15885 goto nla_put_failure;
15886
15887 genlmsg_end(msg, hdr);
15888
15889 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15890 NL80211_MCGRP_MLME, gfp);
15891 return;
15892
15893 nla_put_failure:
15894 nlmsg_free(msg);
15895 }
15896
15897 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15898 struct ieee80211_channel *channel_before,
15899 struct ieee80211_channel *channel_after)
15900 {
15901 struct sk_buff *msg;
15902 void *hdr;
15903 struct nlattr *nl_freq;
15904
15905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15906 if (!msg)
15907 return;
15908
15909 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15910 if (!hdr) {
15911 nlmsg_free(msg);
15912 return;
15913 }
15914
15915 /*
15916 * Since we are applying the beacon hint to a wiphy we know its
15917 * wiphy_idx is valid
15918 */
15919 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15920 goto nla_put_failure;
15921
15922 /* Before */
15923 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15924 if (!nl_freq)
15925 goto nla_put_failure;
15926
15927 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15928 goto nla_put_failure;
15929 nla_nest_end(msg, nl_freq);
15930
15931 /* After */
15932 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15933 if (!nl_freq)
15934 goto nla_put_failure;
15935
15936 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15937 goto nla_put_failure;
15938 nla_nest_end(msg, nl_freq);
15939
15940 genlmsg_end(msg, hdr);
15941
15942 rcu_read_lock();
15943 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15944 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15945 rcu_read_unlock();
15946
15947 return;
15948
15949 nla_put_failure:
15950 nlmsg_free(msg);
15951 }
15952
15953 static void nl80211_send_remain_on_chan_event(
15954 int cmd, struct cfg80211_registered_device *rdev,
15955 struct wireless_dev *wdev, u64 cookie,
15956 struct ieee80211_channel *chan,
15957 unsigned int duration, gfp_t gfp)
15958 {
15959 struct sk_buff *msg;
15960 void *hdr;
15961
15962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15963 if (!msg)
15964 return;
15965
15966 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15967 if (!hdr) {
15968 nlmsg_free(msg);
15969 return;
15970 }
15971
15972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15973 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15974 wdev->netdev->ifindex)) ||
15975 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15976 NL80211_ATTR_PAD) ||
15977 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15978 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15979 NL80211_CHAN_NO_HT) ||
15980 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15981 NL80211_ATTR_PAD))
15982 goto nla_put_failure;
15983
15984 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15985 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15986 goto nla_put_failure;
15987
15988 genlmsg_end(msg, hdr);
15989
15990 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15991 NL80211_MCGRP_MLME, gfp);
15992 return;
15993
15994 nla_put_failure:
15995 nlmsg_free(msg);
15996 }
15997
15998 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15999 struct ieee80211_channel *chan,
16000 unsigned int duration, gfp_t gfp)
16001 {
16002 struct wiphy *wiphy = wdev->wiphy;
16003 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16004
16005 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16006 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16007 rdev, wdev, cookie, chan,
16008 duration, gfp);
16009 }
16010 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16011
16012 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16013 struct ieee80211_channel *chan,
16014 gfp_t gfp)
16015 {
16016 struct wiphy *wiphy = wdev->wiphy;
16017 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16018
16019 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16020 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16021 rdev, wdev, cookie, chan, 0, gfp);
16022 }
16023 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16024
16025 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16026 struct ieee80211_channel *chan,
16027 gfp_t gfp)
16028 {
16029 struct wiphy *wiphy = wdev->wiphy;
16030 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16031
16032 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16033 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16034 rdev, wdev, cookie, chan, 0, gfp);
16035 }
16036 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16037
16038 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16039 struct station_info *sinfo, gfp_t gfp)
16040 {
16041 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16042 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16043 struct sk_buff *msg;
16044
16045 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16046
16047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16048 if (!msg)
16049 return;
16050
16051 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16052 rdev, dev, mac_addr, sinfo) < 0) {
16053 nlmsg_free(msg);
16054 return;
16055 }
16056
16057 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16058 NL80211_MCGRP_MLME, gfp);
16059 }
16060 EXPORT_SYMBOL(cfg80211_new_sta);
16061
16062 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16063 struct station_info *sinfo, gfp_t gfp)
16064 {
16065 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16066 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16067 struct sk_buff *msg;
16068 struct station_info empty_sinfo = {};
16069
16070 if (!sinfo)
16071 sinfo = &empty_sinfo;
16072
16073 trace_cfg80211_del_sta(dev, mac_addr);
16074
16075 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16076 if (!msg) {
16077 cfg80211_sinfo_release_content(sinfo);
16078 return;
16079 }
16080
16081 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16082 rdev, dev, mac_addr, sinfo) < 0) {
16083 nlmsg_free(msg);
16084 return;
16085 }
16086
16087 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16088 NL80211_MCGRP_MLME, gfp);
16089 }
16090 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16091
16092 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16093 enum nl80211_connect_failed_reason reason,
16094 gfp_t gfp)
16095 {
16096 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16097 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16098 struct sk_buff *msg;
16099 void *hdr;
16100
16101 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16102 if (!msg)
16103 return;
16104
16105 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16106 if (!hdr) {
16107 nlmsg_free(msg);
16108 return;
16109 }
16110
16111 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16112 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16113 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16114 goto nla_put_failure;
16115
16116 genlmsg_end(msg, hdr);
16117
16118 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16119 NL80211_MCGRP_MLME, gfp);
16120 return;
16121
16122 nla_put_failure:
16123 nlmsg_free(msg);
16124 }
16125 EXPORT_SYMBOL(cfg80211_conn_failed);
16126
16127 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16128 const u8 *addr, gfp_t gfp)
16129 {
16130 struct wireless_dev *wdev = dev->ieee80211_ptr;
16131 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16132 struct sk_buff *msg;
16133 void *hdr;
16134 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16135
16136 if (!nlportid)
16137 return false;
16138
16139 msg = nlmsg_new(100, gfp);
16140 if (!msg)
16141 return true;
16142
16143 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16144 if (!hdr) {
16145 nlmsg_free(msg);
16146 return true;
16147 }
16148
16149 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16150 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16151 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16152 goto nla_put_failure;
16153
16154 genlmsg_end(msg, hdr);
16155 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16156 return true;
16157
16158 nla_put_failure:
16159 nlmsg_free(msg);
16160 return true;
16161 }
16162
16163 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16164 const u8 *addr, gfp_t gfp)
16165 {
16166 struct wireless_dev *wdev = dev->ieee80211_ptr;
16167 bool ret;
16168
16169 trace_cfg80211_rx_spurious_frame(dev, addr);
16170
16171 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16172 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16173 trace_cfg80211_return_bool(false);
16174 return false;
16175 }
16176 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16177 addr, gfp);
16178 trace_cfg80211_return_bool(ret);
16179 return ret;
16180 }
16181 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16182
16183 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16184 const u8 *addr, gfp_t gfp)
16185 {
16186 struct wireless_dev *wdev = dev->ieee80211_ptr;
16187 bool ret;
16188
16189 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16190
16191 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16192 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16193 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16194 trace_cfg80211_return_bool(false);
16195 return false;
16196 }
16197 ret = __nl80211_unexpected_frame(dev,
16198 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16199 addr, gfp);
16200 trace_cfg80211_return_bool(ret);
16201 return ret;
16202 }
16203 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16204
16205 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16206 struct wireless_dev *wdev, u32 nlportid,
16207 int freq, int sig_dbm,
16208 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16209 {
16210 struct net_device *netdev = wdev->netdev;
16211 struct sk_buff *msg;
16212 void *hdr;
16213
16214 msg = nlmsg_new(100 + len, gfp);
16215 if (!msg)
16216 return -ENOMEM;
16217
16218 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16219 if (!hdr) {
16220 nlmsg_free(msg);
16221 return -ENOMEM;
16222 }
16223
16224 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16225 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16226 netdev->ifindex)) ||
16227 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16228 NL80211_ATTR_PAD) ||
16229 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
16230 (sig_dbm &&
16231 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16232 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16233 (flags &&
16234 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16235 goto nla_put_failure;
16236
16237 genlmsg_end(msg, hdr);
16238
16239 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16240
16241 nla_put_failure:
16242 nlmsg_free(msg);
16243 return -ENOBUFS;
16244 }
16245
16246 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16247 const u8 *buf, size_t len, bool ack, gfp_t gfp)
16248 {
16249 struct wiphy *wiphy = wdev->wiphy;
16250 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16251 struct net_device *netdev = wdev->netdev;
16252 struct sk_buff *msg;
16253 void *hdr;
16254
16255 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16256
16257 msg = nlmsg_new(100 + len, gfp);
16258 if (!msg)
16259 return;
16260
16261 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
16262 if (!hdr) {
16263 nlmsg_free(msg);
16264 return;
16265 }
16266
16267 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16268 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16269 netdev->ifindex)) ||
16270 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16271 NL80211_ATTR_PAD) ||
16272 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16273 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16274 NL80211_ATTR_PAD) ||
16275 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16276 goto nla_put_failure;
16277
16278 genlmsg_end(msg, hdr);
16279
16280 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16281 NL80211_MCGRP_MLME, gfp);
16282 return;
16283
16284 nla_put_failure:
16285 nlmsg_free(msg);
16286 }
16287 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16288
16289 static int __nl80211_rx_control_port(struct net_device *dev,
16290 struct sk_buff *skb,
16291 bool unencrypted, gfp_t gfp)
16292 {
16293 struct wireless_dev *wdev = dev->ieee80211_ptr;
16294 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16295 struct ethhdr *ehdr = eth_hdr(skb);
16296 const u8 *addr = ehdr->h_source;
16297 u16 proto = be16_to_cpu(skb->protocol);
16298 struct sk_buff *msg;
16299 void *hdr;
16300 struct nlattr *frame;
16301
16302 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16303
16304 if (!nlportid)
16305 return -ENOENT;
16306
16307 msg = nlmsg_new(100 + skb->len, gfp);
16308 if (!msg)
16309 return -ENOMEM;
16310
16311 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16312 if (!hdr) {
16313 nlmsg_free(msg);
16314 return -ENOBUFS;
16315 }
16316
16317 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16318 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16319 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16320 NL80211_ATTR_PAD) ||
16321 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16322 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16323 (unencrypted && nla_put_flag(msg,
16324 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16325 goto nla_put_failure;
16326
16327 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16328 if (!frame)
16329 goto nla_put_failure;
16330
16331 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16332 genlmsg_end(msg, hdr);
16333
16334 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16335
16336 nla_put_failure:
16337 nlmsg_free(msg);
16338 return -ENOBUFS;
16339 }
16340
16341 bool cfg80211_rx_control_port(struct net_device *dev,
16342 struct sk_buff *skb, bool unencrypted)
16343 {
16344 int ret;
16345
16346 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16347 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16348 trace_cfg80211_return_bool(ret == 0);
16349 return ret == 0;
16350 }
16351 EXPORT_SYMBOL(cfg80211_rx_control_port);
16352
16353 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16354 const char *mac, gfp_t gfp)
16355 {
16356 struct wireless_dev *wdev = dev->ieee80211_ptr;
16357 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16358 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16359 void **cb;
16360
16361 if (!msg)
16362 return NULL;
16363
16364 cb = (void **)msg->cb;
16365
16366 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16367 if (!cb[0]) {
16368 nlmsg_free(msg);
16369 return NULL;
16370 }
16371
16372 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16373 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16374 goto nla_put_failure;
16375
16376 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16377 goto nla_put_failure;
16378
16379 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16380 if (!cb[1])
16381 goto nla_put_failure;
16382
16383 cb[2] = rdev;
16384
16385 return msg;
16386 nla_put_failure:
16387 nlmsg_free(msg);
16388 return NULL;
16389 }
16390
16391 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16392 {
16393 void **cb = (void **)msg->cb;
16394 struct cfg80211_registered_device *rdev = cb[2];
16395
16396 nla_nest_end(msg, cb[1]);
16397 genlmsg_end(msg, cb[0]);
16398
16399 memset(msg->cb, 0, sizeof(msg->cb));
16400
16401 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16402 NL80211_MCGRP_MLME, gfp);
16403 }
16404
16405 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16406 enum nl80211_cqm_rssi_threshold_event rssi_event,
16407 s32 rssi_level, gfp_t gfp)
16408 {
16409 struct sk_buff *msg;
16410 struct wireless_dev *wdev = dev->ieee80211_ptr;
16411 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16412
16413 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16414
16415 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16416 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16417 return;
16418
16419 if (wdev->cqm_config) {
16420 wdev->cqm_config->last_rssi_event_value = rssi_level;
16421
16422 cfg80211_cqm_rssi_update(rdev, dev);
16423
16424 if (rssi_level == 0)
16425 rssi_level = wdev->cqm_config->last_rssi_event_value;
16426 }
16427
16428 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16429 if (!msg)
16430 return;
16431
16432 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16433 rssi_event))
16434 goto nla_put_failure;
16435
16436 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16437 rssi_level))
16438 goto nla_put_failure;
16439
16440 cfg80211_send_cqm(msg, gfp);
16441
16442 return;
16443
16444 nla_put_failure:
16445 nlmsg_free(msg);
16446 }
16447 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16448
16449 void cfg80211_cqm_txe_notify(struct net_device *dev,
16450 const u8 *peer, u32 num_packets,
16451 u32 rate, u32 intvl, gfp_t gfp)
16452 {
16453 struct sk_buff *msg;
16454
16455 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16456 if (!msg)
16457 return;
16458
16459 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16460 goto nla_put_failure;
16461
16462 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16463 goto nla_put_failure;
16464
16465 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16466 goto nla_put_failure;
16467
16468 cfg80211_send_cqm(msg, gfp);
16469 return;
16470
16471 nla_put_failure:
16472 nlmsg_free(msg);
16473 }
16474 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16475
16476 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16477 const u8 *peer, u32 num_packets, gfp_t gfp)
16478 {
16479 struct sk_buff *msg;
16480
16481 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16482
16483 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16484 if (!msg)
16485 return;
16486
16487 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16488 goto nla_put_failure;
16489
16490 cfg80211_send_cqm(msg, gfp);
16491 return;
16492
16493 nla_put_failure:
16494 nlmsg_free(msg);
16495 }
16496 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16497
16498 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16499 {
16500 struct sk_buff *msg;
16501
16502 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16503 if (!msg)
16504 return;
16505
16506 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16507 goto nla_put_failure;
16508
16509 cfg80211_send_cqm(msg, gfp);
16510 return;
16511
16512 nla_put_failure:
16513 nlmsg_free(msg);
16514 }
16515 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16516
16517 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16518 struct net_device *netdev, const u8 *bssid,
16519 const u8 *replay_ctr, gfp_t gfp)
16520 {
16521 struct sk_buff *msg;
16522 struct nlattr *rekey_attr;
16523 void *hdr;
16524
16525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16526 if (!msg)
16527 return;
16528
16529 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16530 if (!hdr) {
16531 nlmsg_free(msg);
16532 return;
16533 }
16534
16535 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16536 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16537 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16538 goto nla_put_failure;
16539
16540 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16541 if (!rekey_attr)
16542 goto nla_put_failure;
16543
16544 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16545 NL80211_REPLAY_CTR_LEN, replay_ctr))
16546 goto nla_put_failure;
16547
16548 nla_nest_end(msg, rekey_attr);
16549
16550 genlmsg_end(msg, hdr);
16551
16552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16553 NL80211_MCGRP_MLME, gfp);
16554 return;
16555
16556 nla_put_failure:
16557 nlmsg_free(msg);
16558 }
16559
16560 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16561 const u8 *replay_ctr, gfp_t gfp)
16562 {
16563 struct wireless_dev *wdev = dev->ieee80211_ptr;
16564 struct wiphy *wiphy = wdev->wiphy;
16565 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16566
16567 trace_cfg80211_gtk_rekey_notify(dev, bssid);
16568 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16569 }
16570 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16571
16572 static void
16573 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16574 struct net_device *netdev, int index,
16575 const u8 *bssid, bool preauth, gfp_t gfp)
16576 {
16577 struct sk_buff *msg;
16578 struct nlattr *attr;
16579 void *hdr;
16580
16581 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16582 if (!msg)
16583 return;
16584
16585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16586 if (!hdr) {
16587 nlmsg_free(msg);
16588 return;
16589 }
16590
16591 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16592 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16593 goto nla_put_failure;
16594
16595 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16596 if (!attr)
16597 goto nla_put_failure;
16598
16599 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16600 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16601 (preauth &&
16602 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16603 goto nla_put_failure;
16604
16605 nla_nest_end(msg, attr);
16606
16607 genlmsg_end(msg, hdr);
16608
16609 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16610 NL80211_MCGRP_MLME, gfp);
16611 return;
16612
16613 nla_put_failure:
16614 nlmsg_free(msg);
16615 }
16616
16617 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16618 const u8 *bssid, bool preauth, gfp_t gfp)
16619 {
16620 struct wireless_dev *wdev = dev->ieee80211_ptr;
16621 struct wiphy *wiphy = wdev->wiphy;
16622 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16623
16624 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16625 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16626 }
16627 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16628
16629 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16630 struct net_device *netdev,
16631 struct cfg80211_chan_def *chandef,
16632 gfp_t gfp,
16633 enum nl80211_commands notif,
16634 u8 count)
16635 {
16636 struct sk_buff *msg;
16637 void *hdr;
16638
16639 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16640 if (!msg)
16641 return;
16642
16643 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16644 if (!hdr) {
16645 nlmsg_free(msg);
16646 return;
16647 }
16648
16649 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16650 goto nla_put_failure;
16651
16652 if (nl80211_send_chandef(msg, chandef))
16653 goto nla_put_failure;
16654
16655 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16656 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16657 goto nla_put_failure;
16658
16659 genlmsg_end(msg, hdr);
16660
16661 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16662 NL80211_MCGRP_MLME, gfp);
16663 return;
16664
16665 nla_put_failure:
16666 nlmsg_free(msg);
16667 }
16668
16669 void cfg80211_ch_switch_notify(struct net_device *dev,
16670 struct cfg80211_chan_def *chandef)
16671 {
16672 struct wireless_dev *wdev = dev->ieee80211_ptr;
16673 struct wiphy *wiphy = wdev->wiphy;
16674 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16675
16676 ASSERT_WDEV_LOCK(wdev);
16677
16678 trace_cfg80211_ch_switch_notify(dev, chandef);
16679
16680 wdev->chandef = *chandef;
16681 wdev->preset_chandef = *chandef;
16682
16683 if (wdev->iftype == NL80211_IFTYPE_STATION &&
16684 !WARN_ON(!wdev->current_bss))
16685 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16686
16687 cfg80211_sched_dfs_chan_update(rdev);
16688
16689 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16690 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16691 }
16692 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16693
16694 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16695 struct cfg80211_chan_def *chandef,
16696 u8 count)
16697 {
16698 struct wireless_dev *wdev = dev->ieee80211_ptr;
16699 struct wiphy *wiphy = wdev->wiphy;
16700 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16701
16702 trace_cfg80211_ch_switch_started_notify(dev, chandef);
16703
16704 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16705 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16706 }
16707 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16708
16709 void
16710 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16711 const struct cfg80211_chan_def *chandef,
16712 enum nl80211_radar_event event,
16713 struct net_device *netdev, gfp_t gfp)
16714 {
16715 struct sk_buff *msg;
16716 void *hdr;
16717
16718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16719 if (!msg)
16720 return;
16721
16722 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16723 if (!hdr) {
16724 nlmsg_free(msg);
16725 return;
16726 }
16727
16728 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16729 goto nla_put_failure;
16730
16731 /* NOP and radar events don't need a netdev parameter */
16732 if (netdev) {
16733 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16734
16735 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16736 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16737 NL80211_ATTR_PAD))
16738 goto nla_put_failure;
16739 }
16740
16741 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16742 goto nla_put_failure;
16743
16744 if (nl80211_send_chandef(msg, chandef))
16745 goto nla_put_failure;
16746
16747 genlmsg_end(msg, hdr);
16748
16749 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16750 NL80211_MCGRP_MLME, gfp);
16751 return;
16752
16753 nla_put_failure:
16754 nlmsg_free(msg);
16755 }
16756
16757 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16758 struct sta_opmode_info *sta_opmode,
16759 gfp_t gfp)
16760 {
16761 struct sk_buff *msg;
16762 struct wireless_dev *wdev = dev->ieee80211_ptr;
16763 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16764 void *hdr;
16765
16766 if (WARN_ON(!mac))
16767 return;
16768
16769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16770 if (!msg)
16771 return;
16772
16773 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16774 if (!hdr) {
16775 nlmsg_free(msg);
16776 return;
16777 }
16778
16779 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16780 goto nla_put_failure;
16781
16782 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16783 goto nla_put_failure;
16784
16785 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16786 goto nla_put_failure;
16787
16788 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16789 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16790 goto nla_put_failure;
16791
16792 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16793 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16794 goto nla_put_failure;
16795
16796 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16797 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16798 goto nla_put_failure;
16799
16800 genlmsg_end(msg, hdr);
16801
16802 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16803 NL80211_MCGRP_MLME, gfp);
16804
16805 return;
16806
16807 nla_put_failure:
16808 nlmsg_free(msg);
16809 }
16810 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16811
16812 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16813 u64 cookie, bool acked, s32 ack_signal,
16814 bool is_valid_ack_signal, gfp_t gfp)
16815 {
16816 struct wireless_dev *wdev = dev->ieee80211_ptr;
16817 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16818 struct sk_buff *msg;
16819 void *hdr;
16820
16821 trace_cfg80211_probe_status(dev, addr, cookie, acked);
16822
16823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16824
16825 if (!msg)
16826 return;
16827
16828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16829 if (!hdr) {
16830 nlmsg_free(msg);
16831 return;
16832 }
16833
16834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16835 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16836 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16837 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16838 NL80211_ATTR_PAD) ||
16839 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16840 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16841 ack_signal)))
16842 goto nla_put_failure;
16843
16844 genlmsg_end(msg, hdr);
16845
16846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16847 NL80211_MCGRP_MLME, gfp);
16848 return;
16849
16850 nla_put_failure:
16851 nlmsg_free(msg);
16852 }
16853 EXPORT_SYMBOL(cfg80211_probe_status);
16854
16855 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16856 const u8 *frame, size_t len,
16857 int freq, int sig_dbm)
16858 {
16859 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16860 struct sk_buff *msg;
16861 void *hdr;
16862 struct cfg80211_beacon_registration *reg;
16863
16864 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16865
16866 spin_lock_bh(&rdev->beacon_registrations_lock);
16867 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16868 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16869 if (!msg) {
16870 spin_unlock_bh(&rdev->beacon_registrations_lock);
16871 return;
16872 }
16873
16874 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16875 if (!hdr)
16876 goto nla_put_failure;
16877
16878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16879 (freq &&
16880 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16881 (sig_dbm &&
16882 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16883 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16884 goto nla_put_failure;
16885
16886 genlmsg_end(msg, hdr);
16887
16888 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16889 }
16890 spin_unlock_bh(&rdev->beacon_registrations_lock);
16891 return;
16892
16893 nla_put_failure:
16894 spin_unlock_bh(&rdev->beacon_registrations_lock);
16895 nlmsg_free(msg);
16896 }
16897 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16898
16899 #ifdef CONFIG_PM
16900 static int cfg80211_net_detect_results(struct sk_buff *msg,
16901 struct cfg80211_wowlan_wakeup *wakeup)
16902 {
16903 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16904 struct nlattr *nl_results, *nl_match, *nl_freqs;
16905 int i, j;
16906
16907 nl_results = nla_nest_start_noflag(msg,
16908 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16909 if (!nl_results)
16910 return -EMSGSIZE;
16911
16912 for (i = 0; i < nd->n_matches; i++) {
16913 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16914
16915 nl_match = nla_nest_start_noflag(msg, i);
16916 if (!nl_match)
16917 break;
16918
16919 /* The SSID attribute is optional in nl80211, but for
16920 * simplicity reasons it's always present in the
16921 * cfg80211 structure. If a driver can't pass the
16922 * SSID, that needs to be changed. A zero length SSID
16923 * is still a valid SSID (wildcard), so it cannot be
16924 * used for this purpose.
16925 */
16926 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16927 match->ssid.ssid)) {
16928 nla_nest_cancel(msg, nl_match);
16929 goto out;
16930 }
16931
16932 if (match->n_channels) {
16933 nl_freqs = nla_nest_start_noflag(msg,
16934 NL80211_ATTR_SCAN_FREQUENCIES);
16935 if (!nl_freqs) {
16936 nla_nest_cancel(msg, nl_match);
16937 goto out;
16938 }
16939
16940 for (j = 0; j < match->n_channels; j++) {
16941 if (nla_put_u32(msg, j, match->channels[j])) {
16942 nla_nest_cancel(msg, nl_freqs);
16943 nla_nest_cancel(msg, nl_match);
16944 goto out;
16945 }
16946 }
16947
16948 nla_nest_end(msg, nl_freqs);
16949 }
16950
16951 nla_nest_end(msg, nl_match);
16952 }
16953
16954 out:
16955 nla_nest_end(msg, nl_results);
16956 return 0;
16957 }
16958
16959 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16960 struct cfg80211_wowlan_wakeup *wakeup,
16961 gfp_t gfp)
16962 {
16963 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16964 struct sk_buff *msg;
16965 void *hdr;
16966 int size = 200;
16967
16968 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16969
16970 if (wakeup)
16971 size += wakeup->packet_present_len;
16972
16973 msg = nlmsg_new(size, gfp);
16974 if (!msg)
16975 return;
16976
16977 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16978 if (!hdr)
16979 goto free_msg;
16980
16981 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16982 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16983 NL80211_ATTR_PAD))
16984 goto free_msg;
16985
16986 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16987 wdev->netdev->ifindex))
16988 goto free_msg;
16989
16990 if (wakeup) {
16991 struct nlattr *reasons;
16992
16993 reasons = nla_nest_start_noflag(msg,
16994 NL80211_ATTR_WOWLAN_TRIGGERS);
16995 if (!reasons)
16996 goto free_msg;
16997
16998 if (wakeup->disconnect &&
16999 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17000 goto free_msg;
17001 if (wakeup->magic_pkt &&
17002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17003 goto free_msg;
17004 if (wakeup->gtk_rekey_failure &&
17005 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17006 goto free_msg;
17007 if (wakeup->eap_identity_req &&
17008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17009 goto free_msg;
17010 if (wakeup->four_way_handshake &&
17011 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17012 goto free_msg;
17013 if (wakeup->rfkill_release &&
17014 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17015 goto free_msg;
17016
17017 if (wakeup->pattern_idx >= 0 &&
17018 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17019 wakeup->pattern_idx))
17020 goto free_msg;
17021
17022 if (wakeup->tcp_match &&
17023 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17024 goto free_msg;
17025
17026 if (wakeup->tcp_connlost &&
17027 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17028 goto free_msg;
17029
17030 if (wakeup->tcp_nomoretokens &&
17031 nla_put_flag(msg,
17032 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17033 goto free_msg;
17034
17035 if (wakeup->packet) {
17036 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17037 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17038
17039 if (!wakeup->packet_80211) {
17040 pkt_attr =
17041 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17042 len_attr =
17043 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17044 }
17045
17046 if (wakeup->packet_len &&
17047 nla_put_u32(msg, len_attr, wakeup->packet_len))
17048 goto free_msg;
17049
17050 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17051 wakeup->packet))
17052 goto free_msg;
17053 }
17054
17055 if (wakeup->net_detect &&
17056 cfg80211_net_detect_results(msg, wakeup))
17057 goto free_msg;
17058
17059 nla_nest_end(msg, reasons);
17060 }
17061
17062 genlmsg_end(msg, hdr);
17063
17064 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17065 NL80211_MCGRP_MLME, gfp);
17066 return;
17067
17068 free_msg:
17069 nlmsg_free(msg);
17070 }
17071 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17072 #endif
17073
17074 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17075 enum nl80211_tdls_operation oper,
17076 u16 reason_code, gfp_t gfp)
17077 {
17078 struct wireless_dev *wdev = dev->ieee80211_ptr;
17079 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17080 struct sk_buff *msg;
17081 void *hdr;
17082
17083 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17084 reason_code);
17085
17086 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17087 if (!msg)
17088 return;
17089
17090 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17091 if (!hdr) {
17092 nlmsg_free(msg);
17093 return;
17094 }
17095
17096 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17097 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17098 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17099 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17100 (reason_code > 0 &&
17101 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17102 goto nla_put_failure;
17103
17104 genlmsg_end(msg, hdr);
17105
17106 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17107 NL80211_MCGRP_MLME, gfp);
17108 return;
17109
17110 nla_put_failure:
17111 nlmsg_free(msg);
17112 }
17113 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17114
17115 static int nl80211_netlink_notify(struct notifier_block * nb,
17116 unsigned long state,
17117 void *_notify)
17118 {
17119 struct netlink_notify *notify = _notify;
17120 struct cfg80211_registered_device *rdev;
17121 struct wireless_dev *wdev;
17122 struct cfg80211_beacon_registration *reg, *tmp;
17123
17124 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17125 return NOTIFY_DONE;
17126
17127 rcu_read_lock();
17128
17129 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17130 struct cfg80211_sched_scan_request *sched_scan_req;
17131
17132 list_for_each_entry_rcu(sched_scan_req,
17133 &rdev->sched_scan_req_list,
17134 list) {
17135 if (sched_scan_req->owner_nlportid == notify->portid) {
17136 sched_scan_req->nl_owner_dead = true;
17137 schedule_work(&rdev->sched_scan_stop_wk);
17138 }
17139 }
17140
17141 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17142 cfg80211_mlme_unregister_socket(wdev, notify->portid);
17143
17144 if (wdev->owner_nlportid == notify->portid) {
17145 wdev->nl_owner_dead = true;
17146 schedule_work(&rdev->destroy_work);
17147 } else if (wdev->conn_owner_nlportid == notify->portid) {
17148 schedule_work(&wdev->disconnect_wk);
17149 }
17150
17151 cfg80211_release_pmsr(wdev, notify->portid);
17152 }
17153
17154 spin_lock_bh(&rdev->beacon_registrations_lock);
17155 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17156 list) {
17157 if (reg->nlportid == notify->portid) {
17158 list_del(&reg->list);
17159 kfree(reg);
17160 break;
17161 }
17162 }
17163 spin_unlock_bh(&rdev->beacon_registrations_lock);
17164 }
17165
17166 rcu_read_unlock();
17167
17168 /*
17169 * It is possible that the user space process that is controlling the
17170 * indoor setting disappeared, so notify the regulatory core.
17171 */
17172 regulatory_netlink_notify(notify->portid);
17173 return NOTIFY_OK;
17174 }
17175
17176 static struct notifier_block nl80211_netlink_notifier = {
17177 .notifier_call = nl80211_netlink_notify,
17178 };
17179
17180 void cfg80211_ft_event(struct net_device *netdev,
17181 struct cfg80211_ft_event_params *ft_event)
17182 {
17183 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17184 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17185 struct sk_buff *msg;
17186 void *hdr;
17187
17188 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17189
17190 if (!ft_event->target_ap)
17191 return;
17192
17193 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17194 GFP_KERNEL);
17195 if (!msg)
17196 return;
17197
17198 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17199 if (!hdr)
17200 goto out;
17201
17202 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17203 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17204 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17205 goto out;
17206
17207 if (ft_event->ies &&
17208 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17209 goto out;
17210 if (ft_event->ric_ies &&
17211 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17212 ft_event->ric_ies))
17213 goto out;
17214
17215 genlmsg_end(msg, hdr);
17216
17217 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17218 NL80211_MCGRP_MLME, GFP_KERNEL);
17219 return;
17220 out:
17221 nlmsg_free(msg);
17222 }
17223 EXPORT_SYMBOL(cfg80211_ft_event);
17224
17225 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17226 {
17227 struct cfg80211_registered_device *rdev;
17228 struct sk_buff *msg;
17229 void *hdr;
17230 u32 nlportid;
17231
17232 rdev = wiphy_to_rdev(wdev->wiphy);
17233 if (!rdev->crit_proto_nlportid)
17234 return;
17235
17236 nlportid = rdev->crit_proto_nlportid;
17237 rdev->crit_proto_nlportid = 0;
17238
17239 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17240 if (!msg)
17241 return;
17242
17243 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17244 if (!hdr)
17245 goto nla_put_failure;
17246
17247 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17248 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17249 NL80211_ATTR_PAD))
17250 goto nla_put_failure;
17251
17252 genlmsg_end(msg, hdr);
17253
17254 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17255 return;
17256
17257 nla_put_failure:
17258 nlmsg_free(msg);
17259 }
17260 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17261
17262 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17263 {
17264 struct wiphy *wiphy = wdev->wiphy;
17265 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17266 struct sk_buff *msg;
17267 void *hdr;
17268
17269 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17270 if (!msg)
17271 return;
17272
17273 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17274 if (!hdr)
17275 goto out;
17276
17277 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17278 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17279 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17280 NL80211_ATTR_PAD))
17281 goto out;
17282
17283 genlmsg_end(msg, hdr);
17284
17285 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17286 NL80211_MCGRP_MLME, GFP_KERNEL);
17287 return;
17288 out:
17289 nlmsg_free(msg);
17290 }
17291
17292 int cfg80211_external_auth_request(struct net_device *dev,
17293 struct cfg80211_external_auth_params *params,
17294 gfp_t gfp)
17295 {
17296 struct wireless_dev *wdev = dev->ieee80211_ptr;
17297 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17298 struct sk_buff *msg;
17299 void *hdr;
17300
17301 if (!wdev->conn_owner_nlportid)
17302 return -EINVAL;
17303
17304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17305 if (!msg)
17306 return -ENOMEM;
17307
17308 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17309 if (!hdr)
17310 goto nla_put_failure;
17311
17312 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17313 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17314 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17315 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17316 params->action) ||
17317 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17318 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17319 params->ssid.ssid))
17320 goto nla_put_failure;
17321
17322 genlmsg_end(msg, hdr);
17323 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17324 wdev->conn_owner_nlportid);
17325 return 0;
17326
17327 nla_put_failure:
17328 nlmsg_free(msg);
17329 return -ENOBUFS;
17330 }
17331 EXPORT_SYMBOL(cfg80211_external_auth_request);
17332
17333 void cfg80211_update_owe_info_event(struct net_device *netdev,
17334 struct cfg80211_update_owe_info *owe_info,
17335 gfp_t gfp)
17336 {
17337 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17338 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17339 struct sk_buff *msg;
17340 void *hdr;
17341
17342 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17343
17344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17345 if (!msg)
17346 return;
17347
17348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17349 if (!hdr)
17350 goto nla_put_failure;
17351
17352 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17353 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17354 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17355 goto nla_put_failure;
17356
17357 if (!owe_info->ie_len ||
17358 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17359 goto nla_put_failure;
17360
17361 genlmsg_end(msg, hdr);
17362
17363 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17364 NL80211_MCGRP_MLME, gfp);
17365 return;
17366
17367 nla_put_failure:
17368 genlmsg_cancel(msg, hdr);
17369 nlmsg_free(msg);
17370 }
17371 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17372
17373 /* initialisation/exit functions */
17374
17375 int __init nl80211_init(void)
17376 {
17377 int err;
17378
17379 err = genl_register_family(&nl80211_fam);
17380 if (err)
17381 return err;
17382
17383 err = netlink_register_notifier(&nl80211_netlink_notifier);
17384 if (err)
17385 goto err_out;
17386
17387 return 0;
17388 err_out:
17389 genl_unregister_family(&nl80211_fam);
17390 return err;
17391 }
17392
17393 void nl80211_exit(void)
17394 {
17395 netlink_unregister_notifier(&nl80211_netlink_notifier);
17396 genl_unregister_family(&nl80211_fam);
17397 }
Linux with added FPC-III support