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Merge tag 'trace-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[linux/fpc-iii.git] / net / wireless / nl80211.c
blob775d0c4d86c362edfed94f3b37ce79211f1587dd
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 bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
213 unsigned int fixedlen, hdrlen;
214
215 if (s1g_bcn) {
216 fixedlen = offsetof(struct ieee80211_ext,
217 u.s1g_beacon.variable);
218 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
219 } else {
220 fixedlen = offsetof(struct ieee80211_mgmt,
221 u.beacon.variable);
222 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
223 }
224
225 if (len < fixedlen)
226 goto err;
227
228 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
229 goto err;
230
231 data += fixedlen;
232 len -= fixedlen;
233
234 for_each_element(elem, data, len) {
235 /* nothing */
236 }
237
238 if (for_each_element_completed(elem, data, len))
239 return 0;
240
241 err:
242 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
243 return -EINVAL;
244 }
245
246 static int validate_ie_attr(const struct nlattr *attr,
247 struct netlink_ext_ack *extack)
248 {
249 const u8 *data = nla_data(attr);
250 unsigned int len = nla_len(attr);
251 const struct element *elem;
252
253 for_each_element(elem, data, len) {
254 /* nothing */
255 }
256
257 if (for_each_element_completed(elem, data, len))
258 return 0;
259
260 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
261 return -EINVAL;
262 }
263
264 /* policy for the attributes */
265 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
266
267 static const struct nla_policy
268 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
269 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
270 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
271 .len = U8_MAX },
272 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
273 .len = U8_MAX },
274 };
275
276 static const struct nla_policy
277 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
278 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
279 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
280 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
281 NLA_POLICY_MAX(NLA_U8, 15),
282 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
283 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
284 NLA_POLICY_MAX(NLA_U8, 15),
285 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
286 NLA_POLICY_MAX(NLA_U8, 31),
287 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
288 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
289 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
290 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
291 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
292 };
293
294 static const struct nla_policy
295 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
296 [NL80211_PMSR_TYPE_FTM] =
297 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
298 };
299
300 static const struct nla_policy
301 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
302 [NL80211_PMSR_REQ_ATTR_DATA] =
303 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
304 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
305 };
306
307 static const struct nla_policy
308 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
309 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
310 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
311 [NL80211_PMSR_PEER_ATTR_REQ] =
312 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
313 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
314 };
315
316 static const struct nla_policy
317 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
318 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
319 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
320 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
321 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
322 [NL80211_PMSR_ATTR_PEERS] =
323 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
324 };
325
326 static const struct nla_policy
327 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
328 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
329 NLA_POLICY_RANGE(NLA_U8, 1, 20),
330 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
331 NLA_POLICY_RANGE(NLA_U8, 1, 20),
332 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
333 NLA_POLICY_RANGE(NLA_U8, 1, 20),
334 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
335 NLA_POLICY_EXACT_LEN(8),
336 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
337 NLA_POLICY_EXACT_LEN(8),
338 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
339 };
340
341 static const struct nla_policy
342 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
343 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
344 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
345 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
346 };
347
348 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
349 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
350 .len = NL80211_MAX_SUPP_RATES },
351 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
352 .len = NL80211_MAX_SUPP_HT_RATES },
353 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
354 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
355 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
356 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
357 NL80211_RATE_INFO_HE_GI_0_8,
358 NL80211_RATE_INFO_HE_GI_3_2),
359 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
360 NL80211_RATE_INFO_HE_1XLTF,
361 NL80211_RATE_INFO_HE_4XLTF),
362 };
363
364 static const struct nla_policy
365 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
366 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
367 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
368 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
369 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
370 [NL80211_TID_CONFIG_ATTR_NOACK] =
371 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
372 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
373 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
374 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
375 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
376 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
377 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
378 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
379 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
380 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
381 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
382 [NL80211_TID_CONFIG_ATTR_TX_RATE] =
383 NLA_POLICY_NESTED(nl80211_txattr_policy),
384 };
385
386 static const struct nla_policy
387 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
388 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
389 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
390 NLA_POLICY_RANGE(NLA_BINARY,
391 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
392 IEEE80211_MAX_DATA_LEN),
393 };
394
395 static const struct nla_policy
396 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
397 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
398 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
399 .len = IEEE80211_MAX_DATA_LEN }
400 };
401
402 static const struct nla_policy
403 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
404 [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
405 [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
406 };
407
408 static const struct nla_policy
409 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
410 [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
411 [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
412 };
413
414 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
415 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
416 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
417 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
418 .len = 20-1 },
419 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
420
421 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
422 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
423 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
424 NL80211_EDMG_CHANNELS_MIN,
425 NL80211_EDMG_CHANNELS_MAX),
426 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
427 NL80211_EDMG_BW_CONFIG_MIN,
428 NL80211_EDMG_BW_CONFIG_MAX),
429
430 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
431 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
432 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
433 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
434
435 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
436 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
437 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
438 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
439 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
440 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
441
442 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
443 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
444 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
445
446 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
447 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
448
449 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
450 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
451 .len = WLAN_MAX_KEY_LEN },
452 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
453 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
454 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
455 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
456 [NL80211_ATTR_KEY_TYPE] =
457 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
458
459 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
460 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
461 [NL80211_ATTR_BEACON_HEAD] =
462 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
463 IEEE80211_MAX_DATA_LEN),
464 [NL80211_ATTR_BEACON_TAIL] =
465 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
466 IEEE80211_MAX_DATA_LEN),
467 [NL80211_ATTR_STA_AID] =
468 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
469 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
470 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
471 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
472 .len = NL80211_MAX_SUPP_RATES },
473 [NL80211_ATTR_STA_PLINK_ACTION] =
474 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
475 [NL80211_ATTR_STA_TX_POWER_SETTING] =
476 NLA_POLICY_RANGE(NLA_U8,
477 NL80211_TX_POWER_AUTOMATIC,
478 NL80211_TX_POWER_FIXED),
479 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
480 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
481 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
482 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
483 .len = IEEE80211_MAX_MESH_ID_LEN },
484 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
485
486 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
487 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
488
489 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
490 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
491 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
492 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
493 .len = NL80211_MAX_SUPP_RATES },
494 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
495
496 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
497 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
498
499 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
500
501 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
502 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
503 validate_ie_attr,
504 IEEE80211_MAX_DATA_LEN),
505 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
506 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
507
508 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
509 .len = IEEE80211_MAX_SSID_LEN },
510 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
511 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
512 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
513 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
514 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
515 NL80211_MFP_NO,
516 NL80211_MFP_OPTIONAL),
517 [NL80211_ATTR_STA_FLAGS2] = {
518 .len = sizeof(struct nl80211_sta_flag_update),
519 },
520 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
521 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
522 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
523 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
524 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
525 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
526 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
527 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
528 [NL80211_ATTR_PID] = { .type = NLA_U32 },
529 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
530 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
531 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
532 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
533 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
534 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
535 .len = IEEE80211_MAX_DATA_LEN },
536 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
537 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
538 NL80211_PS_DISABLED,
539 NL80211_PS_ENABLED),
540 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
541 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
542 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
543 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
544 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
545 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
546 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
547 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
548 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
549 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
550 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
551 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
552 [NL80211_ATTR_STA_PLINK_STATE] =
553 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
554 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
555 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
556 [NL80211_ATTR_MESH_PEER_AID] =
557 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
558 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
559 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
560 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
561 [NL80211_ATTR_HIDDEN_SSID] =
562 NLA_POLICY_RANGE(NLA_U32,
563 NL80211_HIDDEN_SSID_NOT_IN_USE,
564 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
565 [NL80211_ATTR_IE_PROBE_RESP] =
566 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
567 IEEE80211_MAX_DATA_LEN),
568 [NL80211_ATTR_IE_ASSOC_RESP] =
569 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
570 IEEE80211_MAX_DATA_LEN),
571 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
572 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
573 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
574 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
575 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
576 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
577 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
578 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
579 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
580 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
581 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
582 .len = IEEE80211_MAX_DATA_LEN },
583 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
584 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
585 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
586 .len = NL80211_HT_CAPABILITY_LEN
587 },
588 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
589 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
590 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
591 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
592 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
593
594 /* need to include at least Auth Transaction and Status Code */
595 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
596
597 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
598 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
599 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
600 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
601 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
602 NLA_POLICY_RANGE(NLA_U32,
603 NL80211_MESH_POWER_UNKNOWN + 1,
604 NL80211_MESH_POWER_MAX),
605 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
606 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
607 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
608 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
609 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
610 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
611 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
612 .len = NL80211_VHT_CAPABILITY_LEN,
613 },
614 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
615 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
616 .len = IEEE80211_MAX_DATA_LEN },
617 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
618 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
619 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
620 [NL80211_ATTR_PEER_AID] =
621 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
622 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
623 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
624 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
625 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
626 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
627 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
628 /*
629 * The value of the Length field of the Supported Operating
630 * Classes element is between 2 and 253.
631 */
632 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
633 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
634 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
635 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
636 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
637 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
638 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
639 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
640 IEEE80211_QOS_MAP_LEN_MIN,
641 IEEE80211_QOS_MAP_LEN_MAX),
642 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
643 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
644 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
645 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
646 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
647 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
648 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
649 [NL80211_ATTR_USER_PRIO] =
650 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
651 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
652 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
653 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
654 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
655 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
656 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
657 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
658 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
659 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
660 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
661 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
662 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
663 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
664 .len = VHT_MUMIMO_GROUPS_DATA_LEN
665 },
666 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
667 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
668 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
669 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
670 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
671 .len = FILS_MAX_KEK_LEN },
672 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
673 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
674 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
675 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
676 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
677 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
678 },
679 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
680 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
681 .len = FILS_ERP_MAX_USERNAME_LEN },
682 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
683 .len = FILS_ERP_MAX_REALM_LEN },
684 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
685 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
686 .len = FILS_ERP_MAX_RRK_LEN },
687 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
688 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
689 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
690 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
691 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
692
693 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
694 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
695 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
696 [NL80211_ATTR_HE_CAPABILITY] =
697 NLA_POLICY_RANGE(NLA_BINARY,
698 NL80211_HE_MIN_CAPABILITY_LEN,
699 NL80211_HE_MAX_CAPABILITY_LEN),
700 [NL80211_ATTR_FTM_RESPONDER] =
701 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
702 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
703 [NL80211_ATTR_PEER_MEASUREMENTS] =
704 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
705 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
706 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
707 .len = SAE_PASSWORD_MAX_LEN },
708 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
709 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
710 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
711 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
712 [NL80211_ATTR_TID_CONFIG] =
713 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
714 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
715 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
716 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
717 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
718 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
719 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
720 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
721 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
722 [NL80211_ATTR_FILS_DISCOVERY] =
723 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
724 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
725 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
726 [NL80211_ATTR_S1G_CAPABILITY] =
727 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
728 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
729 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
730 [NL80211_ATTR_SAE_PWE] =
731 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
732 NL80211_SAE_PWE_BOTH),
733 [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
734 [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
735 };
736
737 /* policy for the key attributes */
738 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
739 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
740 [NL80211_KEY_IDX] = { .type = NLA_U8 },
741 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
742 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
743 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
744 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
745 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
746 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
747 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
748 };
749
750 /* policy for the key default flags */
751 static const struct nla_policy
752 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
753 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
754 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
755 };
756
757 #ifdef CONFIG_PM
758 /* policy for WoWLAN attributes */
759 static const struct nla_policy
760 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
761 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
762 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
763 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
764 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
765 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
766 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
767 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
768 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
769 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
770 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
771 };
772
773 static const struct nla_policy
774 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
775 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
776 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
777 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
778 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
779 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
780 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
781 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
782 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
783 },
784 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
785 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
786 },
787 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
788 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
789 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
790 };
791 #endif /* CONFIG_PM */
792
793 /* policy for coalesce rule attributes */
794 static const struct nla_policy
795 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
796 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
797 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
798 NLA_POLICY_RANGE(NLA_U32,
799 NL80211_COALESCE_CONDITION_MATCH,
800 NL80211_COALESCE_CONDITION_NO_MATCH),
801 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
802 };
803
804 /* policy for GTK rekey offload attributes */
805 static const struct nla_policy
806 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
807 [NL80211_REKEY_DATA_KEK] = {
808 .type = NLA_BINARY,
809 .len = NL80211_KEK_EXT_LEN
810 },
811 [NL80211_REKEY_DATA_KCK] = {
812 .type = NLA_BINARY,
813 .len = NL80211_KCK_EXT_LEN
814 },
815 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
816 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
817 };
818
819 static const struct nla_policy
820 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
821 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
822 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
823 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
824 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
825 };
826
827 static const struct nla_policy
828 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
829 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
830 .len = IEEE80211_MAX_SSID_LEN },
831 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
832 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
833 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
834 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
835 };
836
837 static const struct nla_policy
838 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
839 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
840 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
841 };
842
843 static const struct nla_policy
844 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
845 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
846 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
847 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
848 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
849 },
850 };
851
852 /* policy for NAN function attributes */
853 static const struct nla_policy
854 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
855 [NL80211_NAN_FUNC_TYPE] =
856 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
857 [NL80211_NAN_FUNC_SERVICE_ID] = {
858 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
859 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
860 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
861 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
862 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
863 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
864 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
865 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
866 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
867 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
868 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
869 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
870 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
871 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
872 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
873 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
874 };
875
876 /* policy for Service Response Filter attributes */
877 static const struct nla_policy
878 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
879 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
880 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
881 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
882 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
883 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
884 };
885
886 /* policy for packet pattern attributes */
887 static const struct nla_policy
888 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
889 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
890 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
891 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
892 };
893
894 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
895 struct cfg80211_registered_device **rdev,
896 struct wireless_dev **wdev)
897 {
898 int err;
899
900 if (!cb->args[0]) {
901 struct nlattr **attrbuf;
902
903 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
904 GFP_KERNEL);
905 if (!attrbuf)
906 return -ENOMEM;
907
908 err = nlmsg_parse_deprecated(cb->nlh,
909 GENL_HDRLEN + nl80211_fam.hdrsize,
910 attrbuf, nl80211_fam.maxattr,
911 nl80211_policy, NULL);
912 if (err) {
913 kfree(attrbuf);
914 return err;
915 }
916
917 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
918 attrbuf);
919 kfree(attrbuf);
920 if (IS_ERR(*wdev))
921 return PTR_ERR(*wdev);
922 *rdev = wiphy_to_rdev((*wdev)->wiphy);
923 /* 0 is the first index - add 1 to parse only once */
924 cb->args[0] = (*rdev)->wiphy_idx + 1;
925 cb->args[1] = (*wdev)->identifier;
926 } else {
927 /* subtract the 1 again here */
928 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
929 struct wireless_dev *tmp;
930
931 if (!wiphy)
932 return -ENODEV;
933 *rdev = wiphy_to_rdev(wiphy);
934 *wdev = NULL;
935
936 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
937 if (tmp->identifier == cb->args[1]) {
938 *wdev = tmp;
939 break;
940 }
941 }
942
943 if (!*wdev)
944 return -ENODEV;
945 }
946
947 return 0;
948 }
949
950 /* message building helper */
951 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
952 int flags, u8 cmd)
953 {
954 /* since there is no private header just add the generic one */
955 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
956 }
957
958 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
959 const struct ieee80211_reg_rule *rule)
960 {
961 int j;
962 struct nlattr *nl_wmm_rules =
963 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
964
965 if (!nl_wmm_rules)
966 goto nla_put_failure;
967
968 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
969 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
970
971 if (!nl_wmm_rule)
972 goto nla_put_failure;
973
974 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
975 rule->wmm_rule.client[j].cw_min) ||
976 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
977 rule->wmm_rule.client[j].cw_max) ||
978 nla_put_u8(msg, NL80211_WMMR_AIFSN,
979 rule->wmm_rule.client[j].aifsn) ||
980 nla_put_u16(msg, NL80211_WMMR_TXOP,
981 rule->wmm_rule.client[j].cot))
982 goto nla_put_failure;
983
984 nla_nest_end(msg, nl_wmm_rule);
985 }
986 nla_nest_end(msg, nl_wmm_rules);
987
988 return 0;
989
990 nla_put_failure:
991 return -ENOBUFS;
992 }
993
994 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
995 struct ieee80211_channel *chan,
996 bool large)
997 {
998 /* Some channels must be completely excluded from the
999 * list to protect old user-space tools from breaking
1000 */
1001 if (!large && chan->flags &
1002 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1003 return 0;
1004 if (!large && chan->freq_offset)
1005 return 0;
1006
1007 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1008 chan->center_freq))
1009 goto nla_put_failure;
1010
1011 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1012 goto nla_put_failure;
1013
1014 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1015 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1016 goto nla_put_failure;
1017 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1018 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1019 goto nla_put_failure;
1020 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1021 goto nla_put_failure;
1022 }
1023 if (chan->flags & IEEE80211_CHAN_RADAR) {
1024 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1025 goto nla_put_failure;
1026 if (large) {
1027 u32 time;
1028
1029 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1030
1031 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1032 chan->dfs_state))
1033 goto nla_put_failure;
1034 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1035 time))
1036 goto nla_put_failure;
1037 if (nla_put_u32(msg,
1038 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1039 chan->dfs_cac_ms))
1040 goto nla_put_failure;
1041 }
1042 }
1043
1044 if (large) {
1045 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1046 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1047 goto nla_put_failure;
1048 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1049 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1050 goto nla_put_failure;
1051 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1052 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1053 goto nla_put_failure;
1054 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1055 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1056 goto nla_put_failure;
1057 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1058 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1059 goto nla_put_failure;
1060 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1061 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1062 goto nla_put_failure;
1063 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1064 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1065 goto nla_put_failure;
1066 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1067 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1068 goto nla_put_failure;
1069 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1070 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1071 goto nla_put_failure;
1072 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1073 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1074 goto nla_put_failure;
1075 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1076 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1077 goto nla_put_failure;
1078 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1079 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1080 goto nla_put_failure;
1081 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1082 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1083 goto nla_put_failure;
1084 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1085 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1086 goto nla_put_failure;
1087 }
1088
1089 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1090 DBM_TO_MBM(chan->max_power)))
1091 goto nla_put_failure;
1092
1093 if (large) {
1094 const struct ieee80211_reg_rule *rule =
1095 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1096
1097 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1098 if (nl80211_msg_put_wmm_rules(msg, rule))
1099 goto nla_put_failure;
1100 }
1101 }
1102
1103 return 0;
1104
1105 nla_put_failure:
1106 return -ENOBUFS;
1107 }
1108
1109 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1110 struct cfg80211_txq_stats *txqstats,
1111 int attrtype)
1112 {
1113 struct nlattr *txqattr;
1114
1115 #define PUT_TXQVAL_U32(attr, memb) do { \
1116 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1117 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1118 return false; \
1119 } while (0)
1120
1121 txqattr = nla_nest_start_noflag(msg, attrtype);
1122 if (!txqattr)
1123 return false;
1124
1125 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1126 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1127 PUT_TXQVAL_U32(FLOWS, flows);
1128 PUT_TXQVAL_U32(DROPS, drops);
1129 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1130 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1131 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1132 PUT_TXQVAL_U32(COLLISIONS, collisions);
1133 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1134 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1135 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1136 nla_nest_end(msg, txqattr);
1137
1138 #undef PUT_TXQVAL_U32
1139 return true;
1140 }
1141
1142 /* netlink command implementations */
1143
1144 struct key_parse {
1145 struct key_params p;
1146 int idx;
1147 int type;
1148 bool def, defmgmt, defbeacon;
1149 bool def_uni, def_multi;
1150 };
1151
1152 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1153 struct key_parse *k)
1154 {
1155 struct nlattr *tb[NL80211_KEY_MAX + 1];
1156 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1157 nl80211_key_policy,
1158 info->extack);
1159 if (err)
1160 return err;
1161
1162 k->def = !!tb[NL80211_KEY_DEFAULT];
1163 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1164 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1165
1166 if (k->def) {
1167 k->def_uni = true;
1168 k->def_multi = true;
1169 }
1170 if (k->defmgmt || k->defbeacon)
1171 k->def_multi = true;
1172
1173 if (tb[NL80211_KEY_IDX])
1174 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1175
1176 if (tb[NL80211_KEY_DATA]) {
1177 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1178 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1179 }
1180
1181 if (tb[NL80211_KEY_SEQ]) {
1182 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1183 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1184 }
1185
1186 if (tb[NL80211_KEY_CIPHER])
1187 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1188
1189 if (tb[NL80211_KEY_TYPE])
1190 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1191
1192 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1193 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1194
1195 err = nla_parse_nested_deprecated(kdt,
1196 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1197 tb[NL80211_KEY_DEFAULT_TYPES],
1198 nl80211_key_default_policy,
1199 info->extack);
1200 if (err)
1201 return err;
1202
1203 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1204 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1205 }
1206
1207 if (tb[NL80211_KEY_MODE])
1208 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1209
1210 return 0;
1211 }
1212
1213 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1214 {
1215 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1216 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1217 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1218 }
1219
1220 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1221 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1222 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1223 }
1224
1225 if (info->attrs[NL80211_ATTR_KEY_IDX])
1226 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1227
1228 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1229 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1230
1231 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1232 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1233
1234 if (k->def) {
1235 k->def_uni = true;
1236 k->def_multi = true;
1237 }
1238 if (k->defmgmt)
1239 k->def_multi = true;
1240
1241 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1242 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1243
1244 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1245 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1246 int err = nla_parse_nested_deprecated(kdt,
1247 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1248 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1249 nl80211_key_default_policy,
1250 info->extack);
1251 if (err)
1252 return err;
1253
1254 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1255 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1256 }
1257
1258 return 0;
1259 }
1260
1261 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1262 {
1263 int err;
1264
1265 memset(k, 0, sizeof(*k));
1266 k->idx = -1;
1267 k->type = -1;
1268
1269 if (info->attrs[NL80211_ATTR_KEY])
1270 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1271 else
1272 err = nl80211_parse_key_old(info, k);
1273
1274 if (err)
1275 return err;
1276
1277 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1278 (k->defbeacon ? 1 : 0) > 1) {
1279 GENL_SET_ERR_MSG(info,
1280 "key with multiple default flags is invalid");
1281 return -EINVAL;
1282 }
1283
1284 if (k->defmgmt || k->defbeacon) {
1285 if (k->def_uni || !k->def_multi) {
1286 GENL_SET_ERR_MSG(info,
1287 "defmgmt/defbeacon key must be mcast");
1288 return -EINVAL;
1289 }
1290 }
1291
1292 if (k->idx != -1) {
1293 if (k->defmgmt) {
1294 if (k->idx < 4 || k->idx > 5) {
1295 GENL_SET_ERR_MSG(info,
1296 "defmgmt key idx not 4 or 5");
1297 return -EINVAL;
1298 }
1299 } else if (k->defbeacon) {
1300 if (k->idx < 6 || k->idx > 7) {
1301 GENL_SET_ERR_MSG(info,
1302 "defbeacon key idx not 6 or 7");
1303 return -EINVAL;
1304 }
1305 } else if (k->def) {
1306 if (k->idx < 0 || k->idx > 3) {
1307 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1308 return -EINVAL;
1309 }
1310 } else {
1311 if (k->idx < 0 || k->idx > 7) {
1312 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1313 return -EINVAL;
1314 }
1315 }
1316 }
1317
1318 return 0;
1319 }
1320
1321 static struct cfg80211_cached_keys *
1322 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1323 struct genl_info *info, bool *no_ht)
1324 {
1325 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1326 struct key_parse parse;
1327 struct nlattr *key;
1328 struct cfg80211_cached_keys *result;
1329 int rem, err, def = 0;
1330 bool have_key = false;
1331
1332 nla_for_each_nested(key, keys, rem) {
1333 have_key = true;
1334 break;
1335 }
1336
1337 if (!have_key)
1338 return NULL;
1339
1340 result = kzalloc(sizeof(*result), GFP_KERNEL);
1341 if (!result)
1342 return ERR_PTR(-ENOMEM);
1343
1344 result->def = -1;
1345
1346 nla_for_each_nested(key, keys, rem) {
1347 memset(&parse, 0, sizeof(parse));
1348 parse.idx = -1;
1349
1350 err = nl80211_parse_key_new(info, key, &parse);
1351 if (err)
1352 goto error;
1353 err = -EINVAL;
1354 if (!parse.p.key)
1355 goto error;
1356 if (parse.idx < 0 || parse.idx > 3) {
1357 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1358 goto error;
1359 }
1360 if (parse.def) {
1361 if (def) {
1362 GENL_SET_ERR_MSG(info,
1363 "only one key can be default");
1364 goto error;
1365 }
1366 def = 1;
1367 result->def = parse.idx;
1368 if (!parse.def_uni || !parse.def_multi)
1369 goto error;
1370 } else if (parse.defmgmt)
1371 goto error;
1372 err = cfg80211_validate_key_settings(rdev, &parse.p,
1373 parse.idx, false, NULL);
1374 if (err)
1375 goto error;
1376 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1377 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1378 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1379 err = -EINVAL;
1380 goto error;
1381 }
1382 result->params[parse.idx].cipher = parse.p.cipher;
1383 result->params[parse.idx].key_len = parse.p.key_len;
1384 result->params[parse.idx].key = result->data[parse.idx];
1385 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1386
1387 /* must be WEP key if we got here */
1388 if (no_ht)
1389 *no_ht = true;
1390 }
1391
1392 if (result->def < 0) {
1393 err = -EINVAL;
1394 GENL_SET_ERR_MSG(info, "need a default/TX key");
1395 goto error;
1396 }
1397
1398 return result;
1399 error:
1400 kfree(result);
1401 return ERR_PTR(err);
1402 }
1403
1404 static int nl80211_key_allowed(struct wireless_dev *wdev)
1405 {
1406 ASSERT_WDEV_LOCK(wdev);
1407
1408 switch (wdev->iftype) {
1409 case NL80211_IFTYPE_AP:
1410 case NL80211_IFTYPE_AP_VLAN:
1411 case NL80211_IFTYPE_P2P_GO:
1412 case NL80211_IFTYPE_MESH_POINT:
1413 break;
1414 case NL80211_IFTYPE_ADHOC:
1415 case NL80211_IFTYPE_STATION:
1416 case NL80211_IFTYPE_P2P_CLIENT:
1417 if (!wdev->current_bss)
1418 return -ENOLINK;
1419 break;
1420 case NL80211_IFTYPE_UNSPECIFIED:
1421 case NL80211_IFTYPE_OCB:
1422 case NL80211_IFTYPE_MONITOR:
1423 case NL80211_IFTYPE_NAN:
1424 case NL80211_IFTYPE_P2P_DEVICE:
1425 case NL80211_IFTYPE_WDS:
1426 case NUM_NL80211_IFTYPES:
1427 return -EINVAL;
1428 }
1429
1430 return 0;
1431 }
1432
1433 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1434 u32 freq)
1435 {
1436 struct ieee80211_channel *chan;
1437
1438 chan = ieee80211_get_channel_khz(wiphy, freq);
1439 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1440 return NULL;
1441 return chan;
1442 }
1443
1444 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1445 {
1446 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1447 int i;
1448
1449 if (!nl_modes)
1450 goto nla_put_failure;
1451
1452 i = 0;
1453 while (ifmodes) {
1454 if ((ifmodes & 1) && nla_put_flag(msg, i))
1455 goto nla_put_failure;
1456 ifmodes >>= 1;
1457 i++;
1458 }
1459
1460 nla_nest_end(msg, nl_modes);
1461 return 0;
1462
1463 nla_put_failure:
1464 return -ENOBUFS;
1465 }
1466
1467 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1468 struct sk_buff *msg,
1469 bool large)
1470 {
1471 struct nlattr *nl_combis;
1472 int i, j;
1473
1474 nl_combis = nla_nest_start_noflag(msg,
1475 NL80211_ATTR_INTERFACE_COMBINATIONS);
1476 if (!nl_combis)
1477 goto nla_put_failure;
1478
1479 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1480 const struct ieee80211_iface_combination *c;
1481 struct nlattr *nl_combi, *nl_limits;
1482
1483 c = &wiphy->iface_combinations[i];
1484
1485 nl_combi = nla_nest_start_noflag(msg, i + 1);
1486 if (!nl_combi)
1487 goto nla_put_failure;
1488
1489 nl_limits = nla_nest_start_noflag(msg,
1490 NL80211_IFACE_COMB_LIMITS);
1491 if (!nl_limits)
1492 goto nla_put_failure;
1493
1494 for (j = 0; j < c->n_limits; j++) {
1495 struct nlattr *nl_limit;
1496
1497 nl_limit = nla_nest_start_noflag(msg, j + 1);
1498 if (!nl_limit)
1499 goto nla_put_failure;
1500 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1501 c->limits[j].max))
1502 goto nla_put_failure;
1503 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1504 c->limits[j].types))
1505 goto nla_put_failure;
1506 nla_nest_end(msg, nl_limit);
1507 }
1508
1509 nla_nest_end(msg, nl_limits);
1510
1511 if (c->beacon_int_infra_match &&
1512 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1513 goto nla_put_failure;
1514 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1515 c->num_different_channels) ||
1516 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1517 c->max_interfaces))
1518 goto nla_put_failure;
1519 if (large &&
1520 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1521 c->radar_detect_widths) ||
1522 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1523 c->radar_detect_regions)))
1524 goto nla_put_failure;
1525 if (c->beacon_int_min_gcd &&
1526 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1527 c->beacon_int_min_gcd))
1528 goto nla_put_failure;
1529
1530 nla_nest_end(msg, nl_combi);
1531 }
1532
1533 nla_nest_end(msg, nl_combis);
1534
1535 return 0;
1536 nla_put_failure:
1537 return -ENOBUFS;
1538 }
1539
1540 #ifdef CONFIG_PM
1541 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1542 struct sk_buff *msg)
1543 {
1544 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1545 struct nlattr *nl_tcp;
1546
1547 if (!tcp)
1548 return 0;
1549
1550 nl_tcp = nla_nest_start_noflag(msg,
1551 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1552 if (!nl_tcp)
1553 return -ENOBUFS;
1554
1555 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1556 tcp->data_payload_max))
1557 return -ENOBUFS;
1558
1559 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1560 tcp->data_payload_max))
1561 return -ENOBUFS;
1562
1563 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1564 return -ENOBUFS;
1565
1566 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1567 sizeof(*tcp->tok), tcp->tok))
1568 return -ENOBUFS;
1569
1570 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1571 tcp->data_interval_max))
1572 return -ENOBUFS;
1573
1574 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1575 tcp->wake_payload_max))
1576 return -ENOBUFS;
1577
1578 nla_nest_end(msg, nl_tcp);
1579 return 0;
1580 }
1581
1582 static int nl80211_send_wowlan(struct sk_buff *msg,
1583 struct cfg80211_registered_device *rdev,
1584 bool large)
1585 {
1586 struct nlattr *nl_wowlan;
1587
1588 if (!rdev->wiphy.wowlan)
1589 return 0;
1590
1591 nl_wowlan = nla_nest_start_noflag(msg,
1592 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1593 if (!nl_wowlan)
1594 return -ENOBUFS;
1595
1596 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1597 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1598 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1599 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1600 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1601 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1602 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1603 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1604 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1605 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1606 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1607 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1608 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1609 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1610 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1611 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1612 return -ENOBUFS;
1613
1614 if (rdev->wiphy.wowlan->n_patterns) {
1615 struct nl80211_pattern_support pat = {
1616 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1617 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1618 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1619 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1620 };
1621
1622 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1623 sizeof(pat), &pat))
1624 return -ENOBUFS;
1625 }
1626
1627 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1628 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1629 rdev->wiphy.wowlan->max_nd_match_sets))
1630 return -ENOBUFS;
1631
1632 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1633 return -ENOBUFS;
1634
1635 nla_nest_end(msg, nl_wowlan);
1636
1637 return 0;
1638 }
1639 #endif
1640
1641 static int nl80211_send_coalesce(struct sk_buff *msg,
1642 struct cfg80211_registered_device *rdev)
1643 {
1644 struct nl80211_coalesce_rule_support rule;
1645
1646 if (!rdev->wiphy.coalesce)
1647 return 0;
1648
1649 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1650 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1651 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1652 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1653 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1654 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1655
1656 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1657 return -ENOBUFS;
1658
1659 return 0;
1660 }
1661
1662 static int
1663 nl80211_send_iftype_data(struct sk_buff *msg,
1664 const struct ieee80211_supported_band *sband,
1665 const struct ieee80211_sband_iftype_data *iftdata)
1666 {
1667 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1668
1669 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1670 iftdata->types_mask))
1671 return -ENOBUFS;
1672
1673 if (he_cap->has_he) {
1674 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1675 sizeof(he_cap->he_cap_elem.mac_cap_info),
1676 he_cap->he_cap_elem.mac_cap_info) ||
1677 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1678 sizeof(he_cap->he_cap_elem.phy_cap_info),
1679 he_cap->he_cap_elem.phy_cap_info) ||
1680 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1681 sizeof(he_cap->he_mcs_nss_supp),
1682 &he_cap->he_mcs_nss_supp) ||
1683 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1684 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1685 return -ENOBUFS;
1686 }
1687
1688 if (sband->band == NL80211_BAND_6GHZ &&
1689 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1690 sizeof(iftdata->he_6ghz_capa),
1691 &iftdata->he_6ghz_capa))
1692 return -ENOBUFS;
1693
1694 return 0;
1695 }
1696
1697 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1698 struct ieee80211_supported_band *sband,
1699 bool large)
1700 {
1701 struct nlattr *nl_rates, *nl_rate;
1702 struct ieee80211_rate *rate;
1703 int i;
1704
1705 /* add HT info */
1706 if (sband->ht_cap.ht_supported &&
1707 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1708 sizeof(sband->ht_cap.mcs),
1709 &sband->ht_cap.mcs) ||
1710 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1711 sband->ht_cap.cap) ||
1712 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1713 sband->ht_cap.ampdu_factor) ||
1714 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1715 sband->ht_cap.ampdu_density)))
1716 return -ENOBUFS;
1717
1718 /* add VHT info */
1719 if (sband->vht_cap.vht_supported &&
1720 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1721 sizeof(sband->vht_cap.vht_mcs),
1722 &sband->vht_cap.vht_mcs) ||
1723 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1724 sband->vht_cap.cap)))
1725 return -ENOBUFS;
1726
1727 if (large && sband->n_iftype_data) {
1728 struct nlattr *nl_iftype_data =
1729 nla_nest_start_noflag(msg,
1730 NL80211_BAND_ATTR_IFTYPE_DATA);
1731 int err;
1732
1733 if (!nl_iftype_data)
1734 return -ENOBUFS;
1735
1736 for (i = 0; i < sband->n_iftype_data; i++) {
1737 struct nlattr *iftdata;
1738
1739 iftdata = nla_nest_start_noflag(msg, i + 1);
1740 if (!iftdata)
1741 return -ENOBUFS;
1742
1743 err = nl80211_send_iftype_data(msg, sband,
1744 &sband->iftype_data[i]);
1745 if (err)
1746 return err;
1747
1748 nla_nest_end(msg, iftdata);
1749 }
1750
1751 nla_nest_end(msg, nl_iftype_data);
1752 }
1753
1754 /* add EDMG info */
1755 if (large && sband->edmg_cap.channels &&
1756 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1757 sband->edmg_cap.channels) ||
1758 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1759 sband->edmg_cap.bw_config)))
1760
1761 return -ENOBUFS;
1762
1763 /* add bitrates */
1764 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1765 if (!nl_rates)
1766 return -ENOBUFS;
1767
1768 for (i = 0; i < sband->n_bitrates; i++) {
1769 nl_rate = nla_nest_start_noflag(msg, i);
1770 if (!nl_rate)
1771 return -ENOBUFS;
1772
1773 rate = &sband->bitrates[i];
1774 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1775 rate->bitrate))
1776 return -ENOBUFS;
1777 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1778 nla_put_flag(msg,
1779 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1780 return -ENOBUFS;
1781
1782 nla_nest_end(msg, nl_rate);
1783 }
1784
1785 nla_nest_end(msg, nl_rates);
1786
1787 return 0;
1788 }
1789
1790 static int
1791 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1792 const struct ieee80211_txrx_stypes *mgmt_stypes)
1793 {
1794 u16 stypes;
1795 struct nlattr *nl_ftypes, *nl_ifs;
1796 enum nl80211_iftype ift;
1797 int i;
1798
1799 if (!mgmt_stypes)
1800 return 0;
1801
1802 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1803 if (!nl_ifs)
1804 return -ENOBUFS;
1805
1806 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1807 nl_ftypes = nla_nest_start_noflag(msg, ift);
1808 if (!nl_ftypes)
1809 return -ENOBUFS;
1810 i = 0;
1811 stypes = mgmt_stypes[ift].tx;
1812 while (stypes) {
1813 if ((stypes & 1) &&
1814 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1815 (i << 4) | IEEE80211_FTYPE_MGMT))
1816 return -ENOBUFS;
1817 stypes >>= 1;
1818 i++;
1819 }
1820 nla_nest_end(msg, nl_ftypes);
1821 }
1822
1823 nla_nest_end(msg, nl_ifs);
1824
1825 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1826 if (!nl_ifs)
1827 return -ENOBUFS;
1828
1829 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1830 nl_ftypes = nla_nest_start_noflag(msg, ift);
1831 if (!nl_ftypes)
1832 return -ENOBUFS;
1833 i = 0;
1834 stypes = mgmt_stypes[ift].rx;
1835 while (stypes) {
1836 if ((stypes & 1) &&
1837 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1838 (i << 4) | IEEE80211_FTYPE_MGMT))
1839 return -ENOBUFS;
1840 stypes >>= 1;
1841 i++;
1842 }
1843 nla_nest_end(msg, nl_ftypes);
1844 }
1845 nla_nest_end(msg, nl_ifs);
1846
1847 return 0;
1848 }
1849
1850 #define CMD(op, n) \
1851 do { \
1852 if (rdev->ops->op) { \
1853 i++; \
1854 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1855 goto nla_put_failure; \
1856 } \
1857 } while (0)
1858
1859 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1860 struct sk_buff *msg)
1861 {
1862 int i = 0;
1863
1864 /*
1865 * do *NOT* add anything into this function, new things need to be
1866 * advertised only to new versions of userspace that can deal with
1867 * the split (and they can't possibly care about new features...
1868 */
1869 CMD(add_virtual_intf, NEW_INTERFACE);
1870 CMD(change_virtual_intf, SET_INTERFACE);
1871 CMD(add_key, NEW_KEY);
1872 CMD(start_ap, START_AP);
1873 CMD(add_station, NEW_STATION);
1874 CMD(add_mpath, NEW_MPATH);
1875 CMD(update_mesh_config, SET_MESH_CONFIG);
1876 CMD(change_bss, SET_BSS);
1877 CMD(auth, AUTHENTICATE);
1878 CMD(assoc, ASSOCIATE);
1879 CMD(deauth, DEAUTHENTICATE);
1880 CMD(disassoc, DISASSOCIATE);
1881 CMD(join_ibss, JOIN_IBSS);
1882 CMD(join_mesh, JOIN_MESH);
1883 CMD(set_pmksa, SET_PMKSA);
1884 CMD(del_pmksa, DEL_PMKSA);
1885 CMD(flush_pmksa, FLUSH_PMKSA);
1886 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1887 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1888 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1889 CMD(mgmt_tx, FRAME);
1890 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1891 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1892 i++;
1893 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1894 goto nla_put_failure;
1895 }
1896 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1897 rdev->ops->join_mesh) {
1898 i++;
1899 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1900 goto nla_put_failure;
1901 }
1902 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1903 CMD(tdls_mgmt, TDLS_MGMT);
1904 CMD(tdls_oper, TDLS_OPER);
1905 }
1906 if (rdev->wiphy.max_sched_scan_reqs)
1907 CMD(sched_scan_start, START_SCHED_SCAN);
1908 CMD(probe_client, PROBE_CLIENT);
1909 CMD(set_noack_map, SET_NOACK_MAP);
1910 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1911 i++;
1912 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1913 goto nla_put_failure;
1914 }
1915 CMD(start_p2p_device, START_P2P_DEVICE);
1916 CMD(set_mcast_rate, SET_MCAST_RATE);
1917 #ifdef CONFIG_NL80211_TESTMODE
1918 CMD(testmode_cmd, TESTMODE);
1919 #endif
1920
1921 if (rdev->ops->connect || rdev->ops->auth) {
1922 i++;
1923 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1924 goto nla_put_failure;
1925 }
1926
1927 if (rdev->ops->disconnect || rdev->ops->deauth) {
1928 i++;
1929 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1930 goto nla_put_failure;
1931 }
1932
1933 return i;
1934 nla_put_failure:
1935 return -ENOBUFS;
1936 }
1937
1938 static int
1939 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1940 struct sk_buff *msg)
1941 {
1942 struct nlattr *ftm;
1943
1944 if (!cap->ftm.supported)
1945 return 0;
1946
1947 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1948 if (!ftm)
1949 return -ENOBUFS;
1950
1951 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1952 return -ENOBUFS;
1953 if (cap->ftm.non_asap &&
1954 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1955 return -ENOBUFS;
1956 if (cap->ftm.request_lci &&
1957 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1958 return -ENOBUFS;
1959 if (cap->ftm.request_civicloc &&
1960 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1961 return -ENOBUFS;
1962 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1963 cap->ftm.preambles))
1964 return -ENOBUFS;
1965 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1966 cap->ftm.bandwidths))
1967 return -ENOBUFS;
1968 if (cap->ftm.max_bursts_exponent >= 0 &&
1969 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1970 cap->ftm.max_bursts_exponent))
1971 return -ENOBUFS;
1972 if (cap->ftm.max_ftms_per_burst &&
1973 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1974 cap->ftm.max_ftms_per_burst))
1975 return -ENOBUFS;
1976 if (cap->ftm.trigger_based &&
1977 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1978 return -ENOBUFS;
1979 if (cap->ftm.non_trigger_based &&
1980 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1981 return -ENOBUFS;
1982
1983 nla_nest_end(msg, ftm);
1984 return 0;
1985 }
1986
1987 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1988 struct sk_buff *msg)
1989 {
1990 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1991 struct nlattr *pmsr, *caps;
1992
1993 if (!cap)
1994 return 0;
1995
1996 /*
1997 * we don't need to clean up anything here since the caller
1998 * will genlmsg_cancel() if we fail
1999 */
2000
2001 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2002 if (!pmsr)
2003 return -ENOBUFS;
2004
2005 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2006 return -ENOBUFS;
2007
2008 if (cap->report_ap_tsf &&
2009 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2010 return -ENOBUFS;
2011
2012 if (cap->randomize_mac_addr &&
2013 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2014 return -ENOBUFS;
2015
2016 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2017 if (!caps)
2018 return -ENOBUFS;
2019
2020 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2021 return -ENOBUFS;
2022
2023 nla_nest_end(msg, caps);
2024 nla_nest_end(msg, pmsr);
2025
2026 return 0;
2027 }
2028
2029 static int
2030 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2031 struct sk_buff *msg)
2032 {
2033 int i;
2034 struct nlattr *nested, *nested_akms;
2035 const struct wiphy_iftype_akm_suites *iftype_akms;
2036
2037 if (!rdev->wiphy.num_iftype_akm_suites ||
2038 !rdev->wiphy.iftype_akm_suites)
2039 return 0;
2040
2041 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2042 if (!nested)
2043 return -ENOBUFS;
2044
2045 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2046 nested_akms = nla_nest_start(msg, i + 1);
2047 if (!nested_akms)
2048 return -ENOBUFS;
2049
2050 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2051
2052 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2053 iftype_akms->iftypes_mask))
2054 return -ENOBUFS;
2055
2056 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2057 sizeof(u32) * iftype_akms->n_akm_suites,
2058 iftype_akms->akm_suites)) {
2059 return -ENOBUFS;
2060 }
2061 nla_nest_end(msg, nested_akms);
2062 }
2063
2064 nla_nest_end(msg, nested);
2065
2066 return 0;
2067 }
2068
2069 static int
2070 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2071 struct sk_buff *msg)
2072 {
2073 struct nlattr *supp;
2074
2075 if (!rdev->wiphy.tid_config_support.vif &&
2076 !rdev->wiphy.tid_config_support.peer)
2077 return 0;
2078
2079 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2080 if (!supp)
2081 return -ENOSPC;
2082
2083 if (rdev->wiphy.tid_config_support.vif &&
2084 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2085 rdev->wiphy.tid_config_support.vif,
2086 NL80211_TID_CONFIG_ATTR_PAD))
2087 goto fail;
2088
2089 if (rdev->wiphy.tid_config_support.peer &&
2090 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2091 rdev->wiphy.tid_config_support.peer,
2092 NL80211_TID_CONFIG_ATTR_PAD))
2093 goto fail;
2094
2095 /* for now we just use the same value ... makes more sense */
2096 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2097 rdev->wiphy.tid_config_support.max_retry))
2098 goto fail;
2099 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2100 rdev->wiphy.tid_config_support.max_retry))
2101 goto fail;
2102
2103 nla_nest_end(msg, supp);
2104
2105 return 0;
2106 fail:
2107 nla_nest_cancel(msg, supp);
2108 return -ENOBUFS;
2109 }
2110
2111 static int
2112 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2113 struct sk_buff *msg)
2114 {
2115 struct nlattr *sar_capa, *specs, *sub_freq_range;
2116 u8 num_freq_ranges;
2117 int i;
2118
2119 if (!rdev->wiphy.sar_capa)
2120 return 0;
2121
2122 num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2123
2124 sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2125 if (!sar_capa)
2126 return -ENOSPC;
2127
2128 if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2129 goto fail;
2130
2131 specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2132 if (!specs)
2133 goto fail;
2134
2135 /* report supported freq_ranges */
2136 for (i = 0; i < num_freq_ranges; i++) {
2137 sub_freq_range = nla_nest_start(msg, i + 1);
2138 if (!sub_freq_range)
2139 goto fail;
2140
2141 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2142 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2143 goto fail;
2144
2145 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2146 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2147 goto fail;
2148
2149 nla_nest_end(msg, sub_freq_range);
2150 }
2151
2152 nla_nest_end(msg, specs);
2153 nla_nest_end(msg, sar_capa);
2154
2155 return 0;
2156 fail:
2157 nla_nest_cancel(msg, sar_capa);
2158 return -ENOBUFS;
2159 }
2160
2161 struct nl80211_dump_wiphy_state {
2162 s64 filter_wiphy;
2163 long start;
2164 long split_start, band_start, chan_start, capa_start;
2165 bool split;
2166 };
2167
2168 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2169 enum nl80211_commands cmd,
2170 struct sk_buff *msg, u32 portid, u32 seq,
2171 int flags, struct nl80211_dump_wiphy_state *state)
2172 {
2173 void *hdr;
2174 struct nlattr *nl_bands, *nl_band;
2175 struct nlattr *nl_freqs, *nl_freq;
2176 struct nlattr *nl_cmds;
2177 enum nl80211_band band;
2178 struct ieee80211_channel *chan;
2179 int i;
2180 const struct ieee80211_txrx_stypes *mgmt_stypes =
2181 rdev->wiphy.mgmt_stypes;
2182 u32 features;
2183
2184 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2185 if (!hdr)
2186 return -ENOBUFS;
2187
2188 if (WARN_ON(!state))
2189 return -EINVAL;
2190
2191 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2192 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2193 wiphy_name(&rdev->wiphy)) ||
2194 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2195 cfg80211_rdev_list_generation))
2196 goto nla_put_failure;
2197
2198 if (cmd != NL80211_CMD_NEW_WIPHY)
2199 goto finish;
2200
2201 switch (state->split_start) {
2202 case 0:
2203 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2204 rdev->wiphy.retry_short) ||
2205 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2206 rdev->wiphy.retry_long) ||
2207 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2208 rdev->wiphy.frag_threshold) ||
2209 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2210 rdev->wiphy.rts_threshold) ||
2211 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2212 rdev->wiphy.coverage_class) ||
2213 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2214 rdev->wiphy.max_scan_ssids) ||
2215 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2216 rdev->wiphy.max_sched_scan_ssids) ||
2217 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2218 rdev->wiphy.max_scan_ie_len) ||
2219 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2220 rdev->wiphy.max_sched_scan_ie_len) ||
2221 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2222 rdev->wiphy.max_match_sets))
2223 goto nla_put_failure;
2224
2225 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2226 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2227 goto nla_put_failure;
2228 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2229 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2230 goto nla_put_failure;
2231 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2232 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2233 goto nla_put_failure;
2234 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2235 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2236 goto nla_put_failure;
2237 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2238 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2239 goto nla_put_failure;
2240 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2241 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2242 goto nla_put_failure;
2243 state->split_start++;
2244 if (state->split)
2245 break;
2246 fallthrough;
2247 case 1:
2248 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2249 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2250 rdev->wiphy.cipher_suites))
2251 goto nla_put_failure;
2252
2253 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2254 rdev->wiphy.max_num_pmkids))
2255 goto nla_put_failure;
2256
2257 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2258 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2259 goto nla_put_failure;
2260
2261 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2262 rdev->wiphy.available_antennas_tx) ||
2263 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2264 rdev->wiphy.available_antennas_rx))
2265 goto nla_put_failure;
2266
2267 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2268 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2269 rdev->wiphy.probe_resp_offload))
2270 goto nla_put_failure;
2271
2272 if ((rdev->wiphy.available_antennas_tx ||
2273 rdev->wiphy.available_antennas_rx) &&
2274 rdev->ops->get_antenna) {
2275 u32 tx_ant = 0, rx_ant = 0;
2276 int res;
2277
2278 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2279 if (!res) {
2280 if (nla_put_u32(msg,
2281 NL80211_ATTR_WIPHY_ANTENNA_TX,
2282 tx_ant) ||
2283 nla_put_u32(msg,
2284 NL80211_ATTR_WIPHY_ANTENNA_RX,
2285 rx_ant))
2286 goto nla_put_failure;
2287 }
2288 }
2289
2290 state->split_start++;
2291 if (state->split)
2292 break;
2293 fallthrough;
2294 case 2:
2295 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2296 rdev->wiphy.interface_modes))
2297 goto nla_put_failure;
2298 state->split_start++;
2299 if (state->split)
2300 break;
2301 fallthrough;
2302 case 3:
2303 nl_bands = nla_nest_start_noflag(msg,
2304 NL80211_ATTR_WIPHY_BANDS);
2305 if (!nl_bands)
2306 goto nla_put_failure;
2307
2308 for (band = state->band_start;
2309 band < NUM_NL80211_BANDS; band++) {
2310 struct ieee80211_supported_band *sband;
2311
2312 /* omit higher bands for ancient software */
2313 if (band > NL80211_BAND_5GHZ && !state->split)
2314 break;
2315
2316 sband = rdev->wiphy.bands[band];
2317
2318 if (!sband)
2319 continue;
2320
2321 nl_band = nla_nest_start_noflag(msg, band);
2322 if (!nl_band)
2323 goto nla_put_failure;
2324
2325 switch (state->chan_start) {
2326 case 0:
2327 if (nl80211_send_band_rateinfo(msg, sband,
2328 state->split))
2329 goto nla_put_failure;
2330 state->chan_start++;
2331 if (state->split)
2332 break;
2333 fallthrough;
2334 default:
2335 /* add frequencies */
2336 nl_freqs = nla_nest_start_noflag(msg,
2337 NL80211_BAND_ATTR_FREQS);
2338 if (!nl_freqs)
2339 goto nla_put_failure;
2340
2341 for (i = state->chan_start - 1;
2342 i < sband->n_channels;
2343 i++) {
2344 nl_freq = nla_nest_start_noflag(msg,
2345 i);
2346 if (!nl_freq)
2347 goto nla_put_failure;
2348
2349 chan = &sband->channels[i];
2350
2351 if (nl80211_msg_put_channel(
2352 msg, &rdev->wiphy, chan,
2353 state->split))
2354 goto nla_put_failure;
2355
2356 nla_nest_end(msg, nl_freq);
2357 if (state->split)
2358 break;
2359 }
2360 if (i < sband->n_channels)
2361 state->chan_start = i + 2;
2362 else
2363 state->chan_start = 0;
2364 nla_nest_end(msg, nl_freqs);
2365 }
2366
2367 nla_nest_end(msg, nl_band);
2368
2369 if (state->split) {
2370 /* start again here */
2371 if (state->chan_start)
2372 band--;
2373 break;
2374 }
2375 }
2376 nla_nest_end(msg, nl_bands);
2377
2378 if (band < NUM_NL80211_BANDS)
2379 state->band_start = band + 1;
2380 else
2381 state->band_start = 0;
2382
2383 /* if bands & channels are done, continue outside */
2384 if (state->band_start == 0 && state->chan_start == 0)
2385 state->split_start++;
2386 if (state->split)
2387 break;
2388 fallthrough;
2389 case 4:
2390 nl_cmds = nla_nest_start_noflag(msg,
2391 NL80211_ATTR_SUPPORTED_COMMANDS);
2392 if (!nl_cmds)
2393 goto nla_put_failure;
2394
2395 i = nl80211_add_commands_unsplit(rdev, msg);
2396 if (i < 0)
2397 goto nla_put_failure;
2398 if (state->split) {
2399 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2400 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2401 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2402 CMD(channel_switch, CHANNEL_SWITCH);
2403 CMD(set_qos_map, SET_QOS_MAP);
2404 if (rdev->wiphy.features &
2405 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2406 CMD(add_tx_ts, ADD_TX_TS);
2407 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2408 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2409 CMD(update_ft_ies, UPDATE_FT_IES);
2410 if (rdev->wiphy.sar_capa)
2411 CMD(set_sar_specs, SET_SAR_SPECS);
2412 }
2413 #undef CMD
2414
2415 nla_nest_end(msg, nl_cmds);
2416 state->split_start++;
2417 if (state->split)
2418 break;
2419 fallthrough;
2420 case 5:
2421 if (rdev->ops->remain_on_channel &&
2422 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2423 nla_put_u32(msg,
2424 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2425 rdev->wiphy.max_remain_on_channel_duration))
2426 goto nla_put_failure;
2427
2428 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2429 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2430 goto nla_put_failure;
2431
2432 state->split_start++;
2433 if (state->split)
2434 break;
2435 fallthrough;
2436 case 6:
2437 #ifdef CONFIG_PM
2438 if (nl80211_send_wowlan(msg, rdev, state->split))
2439 goto nla_put_failure;
2440 state->split_start++;
2441 if (state->split)
2442 break;
2443 #else
2444 state->split_start++;
2445 #endif
2446 fallthrough;
2447 case 7:
2448 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2449 rdev->wiphy.software_iftypes))
2450 goto nla_put_failure;
2451
2452 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2453 state->split))
2454 goto nla_put_failure;
2455
2456 state->split_start++;
2457 if (state->split)
2458 break;
2459 fallthrough;
2460 case 8:
2461 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2462 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2463 rdev->wiphy.ap_sme_capa))
2464 goto nla_put_failure;
2465
2466 features = rdev->wiphy.features;
2467 /*
2468 * We can only add the per-channel limit information if the
2469 * dump is split, otherwise it makes it too big. Therefore
2470 * only advertise it in that case.
2471 */
2472 if (state->split)
2473 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2474 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2475 goto nla_put_failure;
2476
2477 if (rdev->wiphy.ht_capa_mod_mask &&
2478 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2479 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2480 rdev->wiphy.ht_capa_mod_mask))
2481 goto nla_put_failure;
2482
2483 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2484 rdev->wiphy.max_acl_mac_addrs &&
2485 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2486 rdev->wiphy.max_acl_mac_addrs))
2487 goto nla_put_failure;
2488
2489 /*
2490 * Any information below this point is only available to
2491 * applications that can deal with it being split. This
2492 * helps ensure that newly added capabilities don't break
2493 * older tools by overrunning their buffers.
2494 *
2495 * We still increment split_start so that in the split
2496 * case we'll continue with more data in the next round,
2497 * but break unconditionally so unsplit data stops here.
2498 */
2499 if (state->split)
2500 state->split_start++;
2501 else
2502 state->split_start = 0;
2503 break;
2504 case 9:
2505 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2506 goto nla_put_failure;
2507
2508 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2509 rdev->wiphy.max_sched_scan_plans) ||
2510 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2511 rdev->wiphy.max_sched_scan_plan_interval) ||
2512 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2513 rdev->wiphy.max_sched_scan_plan_iterations))
2514 goto nla_put_failure;
2515
2516 if (rdev->wiphy.extended_capabilities &&
2517 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2518 rdev->wiphy.extended_capabilities_len,
2519 rdev->wiphy.extended_capabilities) ||
2520 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2521 rdev->wiphy.extended_capabilities_len,
2522 rdev->wiphy.extended_capabilities_mask)))
2523 goto nla_put_failure;
2524
2525 if (rdev->wiphy.vht_capa_mod_mask &&
2526 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2527 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2528 rdev->wiphy.vht_capa_mod_mask))
2529 goto nla_put_failure;
2530
2531 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2532 rdev->wiphy.perm_addr))
2533 goto nla_put_failure;
2534
2535 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2536 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2537 rdev->wiphy.addr_mask))
2538 goto nla_put_failure;
2539
2540 if (rdev->wiphy.n_addresses > 1) {
2541 void *attr;
2542
2543 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2544 if (!attr)
2545 goto nla_put_failure;
2546
2547 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2548 if (nla_put(msg, i + 1, ETH_ALEN,
2549 rdev->wiphy.addresses[i].addr))
2550 goto nla_put_failure;
2551
2552 nla_nest_end(msg, attr);
2553 }
2554
2555 state->split_start++;
2556 break;
2557 case 10:
2558 if (nl80211_send_coalesce(msg, rdev))
2559 goto nla_put_failure;
2560
2561 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2562 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2563 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2564 goto nla_put_failure;
2565
2566 if (rdev->wiphy.max_ap_assoc_sta &&
2567 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2568 rdev->wiphy.max_ap_assoc_sta))
2569 goto nla_put_failure;
2570
2571 state->split_start++;
2572 break;
2573 case 11:
2574 if (rdev->wiphy.n_vendor_commands) {
2575 const struct nl80211_vendor_cmd_info *info;
2576 struct nlattr *nested;
2577
2578 nested = nla_nest_start_noflag(msg,
2579 NL80211_ATTR_VENDOR_DATA);
2580 if (!nested)
2581 goto nla_put_failure;
2582
2583 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2584 info = &rdev->wiphy.vendor_commands[i].info;
2585 if (nla_put(msg, i + 1, sizeof(*info), info))
2586 goto nla_put_failure;
2587 }
2588 nla_nest_end(msg, nested);
2589 }
2590
2591 if (rdev->wiphy.n_vendor_events) {
2592 const struct nl80211_vendor_cmd_info *info;
2593 struct nlattr *nested;
2594
2595 nested = nla_nest_start_noflag(msg,
2596 NL80211_ATTR_VENDOR_EVENTS);
2597 if (!nested)
2598 goto nla_put_failure;
2599
2600 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2601 info = &rdev->wiphy.vendor_events[i];
2602 if (nla_put(msg, i + 1, sizeof(*info), info))
2603 goto nla_put_failure;
2604 }
2605 nla_nest_end(msg, nested);
2606 }
2607 state->split_start++;
2608 break;
2609 case 12:
2610 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2611 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2612 rdev->wiphy.max_num_csa_counters))
2613 goto nla_put_failure;
2614
2615 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2616 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2617 goto nla_put_failure;
2618
2619 if (rdev->wiphy.max_sched_scan_reqs &&
2620 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2621 rdev->wiphy.max_sched_scan_reqs))
2622 goto nla_put_failure;
2623
2624 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2625 sizeof(rdev->wiphy.ext_features),
2626 rdev->wiphy.ext_features))
2627 goto nla_put_failure;
2628
2629 if (rdev->wiphy.bss_select_support) {
2630 struct nlattr *nested;
2631 u32 bss_select_support = rdev->wiphy.bss_select_support;
2632
2633 nested = nla_nest_start_noflag(msg,
2634 NL80211_ATTR_BSS_SELECT);
2635 if (!nested)
2636 goto nla_put_failure;
2637
2638 i = 0;
2639 while (bss_select_support) {
2640 if ((bss_select_support & 1) &&
2641 nla_put_flag(msg, i))
2642 goto nla_put_failure;
2643 i++;
2644 bss_select_support >>= 1;
2645 }
2646 nla_nest_end(msg, nested);
2647 }
2648
2649 state->split_start++;
2650 break;
2651 case 13:
2652 if (rdev->wiphy.num_iftype_ext_capab &&
2653 rdev->wiphy.iftype_ext_capab) {
2654 struct nlattr *nested_ext_capab, *nested;
2655
2656 nested = nla_nest_start_noflag(msg,
2657 NL80211_ATTR_IFTYPE_EXT_CAPA);
2658 if (!nested)
2659 goto nla_put_failure;
2660
2661 for (i = state->capa_start;
2662 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2663 const struct wiphy_iftype_ext_capab *capab;
2664
2665 capab = &rdev->wiphy.iftype_ext_capab[i];
2666
2667 nested_ext_capab = nla_nest_start_noflag(msg,
2668 i);
2669 if (!nested_ext_capab ||
2670 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2671 capab->iftype) ||
2672 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2673 capab->extended_capabilities_len,
2674 capab->extended_capabilities) ||
2675 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2676 capab->extended_capabilities_len,
2677 capab->extended_capabilities_mask))
2678 goto nla_put_failure;
2679
2680 nla_nest_end(msg, nested_ext_capab);
2681 if (state->split)
2682 break;
2683 }
2684 nla_nest_end(msg, nested);
2685 if (i < rdev->wiphy.num_iftype_ext_capab) {
2686 state->capa_start = i + 1;
2687 break;
2688 }
2689 }
2690
2691 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2692 rdev->wiphy.nan_supported_bands))
2693 goto nla_put_failure;
2694
2695 if (wiphy_ext_feature_isset(&rdev->wiphy,
2696 NL80211_EXT_FEATURE_TXQS)) {
2697 struct cfg80211_txq_stats txqstats = {};
2698 int res;
2699
2700 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2701 if (!res &&
2702 !nl80211_put_txq_stats(msg, &txqstats,
2703 NL80211_ATTR_TXQ_STATS))
2704 goto nla_put_failure;
2705
2706 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2707 rdev->wiphy.txq_limit))
2708 goto nla_put_failure;
2709 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2710 rdev->wiphy.txq_memory_limit))
2711 goto nla_put_failure;
2712 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2713 rdev->wiphy.txq_quantum))
2714 goto nla_put_failure;
2715 }
2716
2717 state->split_start++;
2718 break;
2719 case 14:
2720 if (nl80211_send_pmsr_capa(rdev, msg))
2721 goto nla_put_failure;
2722
2723 state->split_start++;
2724 break;
2725 case 15:
2726 if (rdev->wiphy.akm_suites &&
2727 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2728 sizeof(u32) * rdev->wiphy.n_akm_suites,
2729 rdev->wiphy.akm_suites))
2730 goto nla_put_failure;
2731
2732 if (nl80211_put_iftype_akm_suites(rdev, msg))
2733 goto nla_put_failure;
2734
2735 if (nl80211_put_tid_config_support(rdev, msg))
2736 goto nla_put_failure;
2737 state->split_start++;
2738 break;
2739 case 16:
2740 if (nl80211_put_sar_specs(rdev, msg))
2741 goto nla_put_failure;
2742
2743 /* done */
2744 state->split_start = 0;
2745 break;
2746 }
2747 finish:
2748 genlmsg_end(msg, hdr);
2749 return 0;
2750
2751 nla_put_failure:
2752 genlmsg_cancel(msg, hdr);
2753 return -EMSGSIZE;
2754 }
2755
2756 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2757 struct netlink_callback *cb,
2758 struct nl80211_dump_wiphy_state *state)
2759 {
2760 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2761 int ret;
2762
2763 if (!tb)
2764 return -ENOMEM;
2765
2766 ret = nlmsg_parse_deprecated(cb->nlh,
2767 GENL_HDRLEN + nl80211_fam.hdrsize,
2768 tb, nl80211_fam.maxattr,
2769 nl80211_policy, NULL);
2770 /* ignore parse errors for backward compatibility */
2771 if (ret) {
2772 ret = 0;
2773 goto out;
2774 }
2775
2776 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2777 if (tb[NL80211_ATTR_WIPHY])
2778 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2779 if (tb[NL80211_ATTR_WDEV])
2780 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2781 if (tb[NL80211_ATTR_IFINDEX]) {
2782 struct net_device *netdev;
2783 struct cfg80211_registered_device *rdev;
2784 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2785
2786 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2787 if (!netdev) {
2788 ret = -ENODEV;
2789 goto out;
2790 }
2791 if (netdev->ieee80211_ptr) {
2792 rdev = wiphy_to_rdev(
2793 netdev->ieee80211_ptr->wiphy);
2794 state->filter_wiphy = rdev->wiphy_idx;
2795 }
2796 }
2797
2798 ret = 0;
2799 out:
2800 kfree(tb);
2801 return ret;
2802 }
2803
2804 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2805 {
2806 int idx = 0, ret;
2807 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2808 struct cfg80211_registered_device *rdev;
2809
2810 rtnl_lock();
2811 if (!state) {
2812 state = kzalloc(sizeof(*state), GFP_KERNEL);
2813 if (!state) {
2814 rtnl_unlock();
2815 return -ENOMEM;
2816 }
2817 state->filter_wiphy = -1;
2818 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2819 if (ret) {
2820 kfree(state);
2821 rtnl_unlock();
2822 return ret;
2823 }
2824 cb->args[0] = (long)state;
2825 }
2826
2827 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2828 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2829 continue;
2830 if (++idx <= state->start)
2831 continue;
2832 if (state->filter_wiphy != -1 &&
2833 state->filter_wiphy != rdev->wiphy_idx)
2834 continue;
2835 /* attempt to fit multiple wiphy data chunks into the skb */
2836 do {
2837 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2838 skb,
2839 NETLINK_CB(cb->skb).portid,
2840 cb->nlh->nlmsg_seq,
2841 NLM_F_MULTI, state);
2842 if (ret < 0) {
2843 /*
2844 * If sending the wiphy data didn't fit (ENOBUFS
2845 * or EMSGSIZE returned), this SKB is still
2846 * empty (so it's not too big because another
2847 * wiphy dataset is already in the skb) and
2848 * we've not tried to adjust the dump allocation
2849 * yet ... then adjust the alloc size to be
2850 * bigger, and return 1 but with the empty skb.
2851 * This results in an empty message being RX'ed
2852 * in userspace, but that is ignored.
2853 *
2854 * We can then retry with the larger buffer.
2855 */
2856 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2857 !skb->len && !state->split &&
2858 cb->min_dump_alloc < 4096) {
2859 cb->min_dump_alloc = 4096;
2860 state->split_start = 0;
2861 rtnl_unlock();
2862 return 1;
2863 }
2864 idx--;
2865 break;
2866 }
2867 } while (state->split_start > 0);
2868 break;
2869 }
2870 rtnl_unlock();
2871
2872 state->start = idx;
2873
2874 return skb->len;
2875 }
2876
2877 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2878 {
2879 kfree((void *)cb->args[0]);
2880 return 0;
2881 }
2882
2883 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2884 {
2885 struct sk_buff *msg;
2886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2887 struct nl80211_dump_wiphy_state state = {};
2888
2889 msg = nlmsg_new(4096, GFP_KERNEL);
2890 if (!msg)
2891 return -ENOMEM;
2892
2893 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2894 info->snd_portid, info->snd_seq, 0,
2895 &state) < 0) {
2896 nlmsg_free(msg);
2897 return -ENOBUFS;
2898 }
2899
2900 return genlmsg_reply(msg, info);
2901 }
2902
2903 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2904 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2905 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2906 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2907 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2908 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2909 };
2910
2911 static int parse_txq_params(struct nlattr *tb[],
2912 struct ieee80211_txq_params *txq_params)
2913 {
2914 u8 ac;
2915
2916 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2917 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2918 !tb[NL80211_TXQ_ATTR_AIFS])
2919 return -EINVAL;
2920
2921 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2922 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2923 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2924 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2925 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2926
2927 if (ac >= NL80211_NUM_ACS)
2928 return -EINVAL;
2929 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2930 return 0;
2931 }
2932
2933 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2934 {
2935 /*
2936 * You can only set the channel explicitly for some interfaces,
2937 * most have their channel managed via their respective
2938 * "establish a connection" command (connect, join, ...)
2939 *
2940 * For AP/GO and mesh mode, the channel can be set with the
2941 * channel userspace API, but is only stored and passed to the
2942 * low-level driver when the AP starts or the mesh is joined.
2943 * This is for backward compatibility, userspace can also give
2944 * the channel in the start-ap or join-mesh commands instead.
2945 *
2946 * Monitors are special as they are normally slaved to
2947 * whatever else is going on, so they have their own special
2948 * operation to set the monitor channel if possible.
2949 */
2950 return !wdev ||
2951 wdev->iftype == NL80211_IFTYPE_AP ||
2952 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2953 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2954 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2955 }
2956
2957 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2958 struct genl_info *info,
2959 struct cfg80211_chan_def *chandef)
2960 {
2961 struct netlink_ext_ack *extack = info->extack;
2962 struct nlattr **attrs = info->attrs;
2963 u32 control_freq;
2964
2965 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2966 return -EINVAL;
2967
2968 control_freq = MHZ_TO_KHZ(
2969 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2970 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2971 control_freq +=
2972 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2973
2974 memset(chandef, 0, sizeof(*chandef));
2975 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2976 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2977 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2978 chandef->freq1_offset = control_freq % 1000;
2979 chandef->center_freq2 = 0;
2980
2981 /* Primary channel not allowed */
2982 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2983 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2984 "Channel is disabled");
2985 return -EINVAL;
2986 }
2987
2988 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2989 enum nl80211_channel_type chantype;
2990
2991 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2992
2993 switch (chantype) {
2994 case NL80211_CHAN_NO_HT:
2995 case NL80211_CHAN_HT20:
2996 case NL80211_CHAN_HT40PLUS:
2997 case NL80211_CHAN_HT40MINUS:
2998 cfg80211_chandef_create(chandef, chandef->chan,
2999 chantype);
3000 /* user input for center_freq is incorrect */
3001 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3002 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3003 NL_SET_ERR_MSG_ATTR(extack,
3004 attrs[NL80211_ATTR_CENTER_FREQ1],
3005 "bad center frequency 1");
3006 return -EINVAL;
3007 }
3008 /* center_freq2 must be zero */
3009 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3010 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3011 NL_SET_ERR_MSG_ATTR(extack,
3012 attrs[NL80211_ATTR_CENTER_FREQ2],
3013 "center frequency 2 can't be used");
3014 return -EINVAL;
3015 }
3016 break;
3017 default:
3018 NL_SET_ERR_MSG_ATTR(extack,
3019 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3020 "invalid channel type");
3021 return -EINVAL;
3022 }
3023 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3024 chandef->width =
3025 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3026 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3027 chandef->center_freq1 =
3028 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3029 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3030 chandef->freq1_offset = nla_get_u32(
3031 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3032 else
3033 chandef->freq1_offset = 0;
3034 }
3035 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3036 chandef->center_freq2 =
3037 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3038 }
3039
3040 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3041 chandef->edmg.channels =
3042 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3043
3044 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3045 chandef->edmg.bw_config =
3046 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3047 } else {
3048 chandef->edmg.bw_config = 0;
3049 chandef->edmg.channels = 0;
3050 }
3051
3052 if (!cfg80211_chandef_valid(chandef)) {
3053 NL_SET_ERR_MSG(extack, "invalid channel definition");
3054 return -EINVAL;
3055 }
3056
3057 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3058 IEEE80211_CHAN_DISABLED)) {
3059 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3060 return -EINVAL;
3061 }
3062
3063 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3064 chandef->width == NL80211_CHAN_WIDTH_10) &&
3065 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3066 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3067 return -EINVAL;
3068 }
3069
3070 return 0;
3071 }
3072
3073 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3074 struct net_device *dev,
3075 struct genl_info *info)
3076 {
3077 struct cfg80211_chan_def chandef;
3078 int result;
3079 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3080 struct wireless_dev *wdev = NULL;
3081
3082 if (dev)
3083 wdev = dev->ieee80211_ptr;
3084 if (!nl80211_can_set_dev_channel(wdev))
3085 return -EOPNOTSUPP;
3086 if (wdev)
3087 iftype = wdev->iftype;
3088
3089 result = nl80211_parse_chandef(rdev, info, &chandef);
3090 if (result)
3091 return result;
3092
3093 switch (iftype) {
3094 case NL80211_IFTYPE_AP:
3095 case NL80211_IFTYPE_P2P_GO:
3096 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3097 iftype)) {
3098 result = -EINVAL;
3099 break;
3100 }
3101 if (wdev->beacon_interval) {
3102 if (!dev || !rdev->ops->set_ap_chanwidth ||
3103 !(rdev->wiphy.features &
3104 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3105 result = -EBUSY;
3106 break;
3107 }
3108
3109 /* Only allow dynamic channel width changes */
3110 if (chandef.chan != wdev->preset_chandef.chan) {
3111 result = -EBUSY;
3112 break;
3113 }
3114 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3115 if (result)
3116 break;
3117 }
3118 wdev->preset_chandef = chandef;
3119 result = 0;
3120 break;
3121 case NL80211_IFTYPE_MESH_POINT:
3122 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3123 break;
3124 case NL80211_IFTYPE_MONITOR:
3125 result = cfg80211_set_monitor_channel(rdev, &chandef);
3126 break;
3127 default:
3128 result = -EINVAL;
3129 }
3130
3131 return result;
3132 }
3133
3134 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3135 {
3136 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3137 struct net_device *netdev = info->user_ptr[1];
3138
3139 return __nl80211_set_channel(rdev, netdev, info);
3140 }
3141
3142 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3143 {
3144 struct cfg80211_registered_device *rdev;
3145 struct net_device *netdev = NULL;
3146 struct wireless_dev *wdev;
3147 int result = 0, rem_txq_params = 0;
3148 struct nlattr *nl_txq_params;
3149 u32 changed;
3150 u8 retry_short = 0, retry_long = 0;
3151 u32 frag_threshold = 0, rts_threshold = 0;
3152 u8 coverage_class = 0;
3153 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3154
3155 ASSERT_RTNL();
3156
3157 /*
3158 * Try to find the wiphy and netdev. Normally this
3159 * function shouldn't need the netdev, but this is
3160 * done for backward compatibility -- previously
3161 * setting the channel was done per wiphy, but now
3162 * it is per netdev. Previous userland like hostapd
3163 * also passed a netdev to set_wiphy, so that it is
3164 * possible to let that go to the right netdev!
3165 */
3166
3167 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3168 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3169
3170 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3171 if (netdev && netdev->ieee80211_ptr)
3172 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3173 else
3174 netdev = NULL;
3175 }
3176
3177 if (!netdev) {
3178 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3179 info->attrs);
3180 if (IS_ERR(rdev))
3181 return PTR_ERR(rdev);
3182 wdev = NULL;
3183 netdev = NULL;
3184 result = 0;
3185 } else
3186 wdev = netdev->ieee80211_ptr;
3187
3188 /*
3189 * end workaround code, by now the rdev is available
3190 * and locked, and wdev may or may not be NULL.
3191 */
3192
3193 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3194 result = cfg80211_dev_rename(
3195 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3196
3197 if (result)
3198 return result;
3199
3200 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3201 struct ieee80211_txq_params txq_params;
3202 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3203
3204 if (!rdev->ops->set_txq_params)
3205 return -EOPNOTSUPP;
3206
3207 if (!netdev)
3208 return -EINVAL;
3209
3210 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3211 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3212 return -EINVAL;
3213
3214 if (!netif_running(netdev))
3215 return -ENETDOWN;
3216
3217 nla_for_each_nested(nl_txq_params,
3218 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3219 rem_txq_params) {
3220 result = nla_parse_nested_deprecated(tb,
3221 NL80211_TXQ_ATTR_MAX,
3222 nl_txq_params,
3223 txq_params_policy,
3224 info->extack);
3225 if (result)
3226 return result;
3227 result = parse_txq_params(tb, &txq_params);
3228 if (result)
3229 return result;
3230
3231 result = rdev_set_txq_params(rdev, netdev,
3232 &txq_params);
3233 if (result)
3234 return result;
3235 }
3236 }
3237
3238 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3239 result = __nl80211_set_channel(
3240 rdev,
3241 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3242 info);
3243 if (result)
3244 return result;
3245 }
3246
3247 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3248 struct wireless_dev *txp_wdev = wdev;
3249 enum nl80211_tx_power_setting type;
3250 int idx, mbm = 0;
3251
3252 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3253 txp_wdev = NULL;
3254
3255 if (!rdev->ops->set_tx_power)
3256 return -EOPNOTSUPP;
3257
3258 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3259 type = nla_get_u32(info->attrs[idx]);
3260
3261 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3262 (type != NL80211_TX_POWER_AUTOMATIC))
3263 return -EINVAL;
3264
3265 if (type != NL80211_TX_POWER_AUTOMATIC) {
3266 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3267 mbm = nla_get_u32(info->attrs[idx]);
3268 }
3269
3270 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3271 if (result)
3272 return result;
3273 }
3274
3275 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3276 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3277 u32 tx_ant, rx_ant;
3278
3279 if ((!rdev->wiphy.available_antennas_tx &&
3280 !rdev->wiphy.available_antennas_rx) ||
3281 !rdev->ops->set_antenna)
3282 return -EOPNOTSUPP;
3283
3284 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3285 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3286
3287 /* reject antenna configurations which don't match the
3288 * available antenna masks, except for the "all" mask */
3289 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3290 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3291 return -EINVAL;
3292
3293 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3294 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3295
3296 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3297 if (result)
3298 return result;
3299 }
3300
3301 changed = 0;
3302
3303 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3304 retry_short = nla_get_u8(
3305 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3306
3307 changed |= WIPHY_PARAM_RETRY_SHORT;
3308 }
3309
3310 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3311 retry_long = nla_get_u8(
3312 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3313
3314 changed |= WIPHY_PARAM_RETRY_LONG;
3315 }
3316
3317 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3318 frag_threshold = nla_get_u32(
3319 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3320 if (frag_threshold < 256)
3321 return -EINVAL;
3322
3323 if (frag_threshold != (u32) -1) {
3324 /*
3325 * Fragments (apart from the last one) are required to
3326 * have even length. Make the fragmentation code
3327 * simpler by stripping LSB should someone try to use
3328 * odd threshold value.
3329 */
3330 frag_threshold &= ~0x1;
3331 }
3332 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3333 }
3334
3335 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3336 rts_threshold = nla_get_u32(
3337 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3338 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3339 }
3340
3341 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3342 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3343 return -EINVAL;
3344
3345 coverage_class = nla_get_u8(
3346 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3347 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3348 }
3349
3350 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3351 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3352 return -EOPNOTSUPP;
3353
3354 changed |= WIPHY_PARAM_DYN_ACK;
3355 }
3356
3357 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3358 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3359 NL80211_EXT_FEATURE_TXQS))
3360 return -EOPNOTSUPP;
3361 txq_limit = nla_get_u32(
3362 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3363 changed |= WIPHY_PARAM_TXQ_LIMIT;
3364 }
3365
3366 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3367 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3368 NL80211_EXT_FEATURE_TXQS))
3369 return -EOPNOTSUPP;
3370 txq_memory_limit = nla_get_u32(
3371 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3372 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3373 }
3374
3375 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3376 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3377 NL80211_EXT_FEATURE_TXQS))
3378 return -EOPNOTSUPP;
3379 txq_quantum = nla_get_u32(
3380 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3381 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3382 }
3383
3384 if (changed) {
3385 u8 old_retry_short, old_retry_long;
3386 u32 old_frag_threshold, old_rts_threshold;
3387 u8 old_coverage_class;
3388 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3389
3390 if (!rdev->ops->set_wiphy_params)
3391 return -EOPNOTSUPP;
3392
3393 old_retry_short = rdev->wiphy.retry_short;
3394 old_retry_long = rdev->wiphy.retry_long;
3395 old_frag_threshold = rdev->wiphy.frag_threshold;
3396 old_rts_threshold = rdev->wiphy.rts_threshold;
3397 old_coverage_class = rdev->wiphy.coverage_class;
3398 old_txq_limit = rdev->wiphy.txq_limit;
3399 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3400 old_txq_quantum = rdev->wiphy.txq_quantum;
3401
3402 if (changed & WIPHY_PARAM_RETRY_SHORT)
3403 rdev->wiphy.retry_short = retry_short;
3404 if (changed & WIPHY_PARAM_RETRY_LONG)
3405 rdev->wiphy.retry_long = retry_long;
3406 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3407 rdev->wiphy.frag_threshold = frag_threshold;
3408 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3409 rdev->wiphy.rts_threshold = rts_threshold;
3410 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3411 rdev->wiphy.coverage_class = coverage_class;
3412 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3413 rdev->wiphy.txq_limit = txq_limit;
3414 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3415 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3416 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3417 rdev->wiphy.txq_quantum = txq_quantum;
3418
3419 result = rdev_set_wiphy_params(rdev, changed);
3420 if (result) {
3421 rdev->wiphy.retry_short = old_retry_short;
3422 rdev->wiphy.retry_long = old_retry_long;
3423 rdev->wiphy.frag_threshold = old_frag_threshold;
3424 rdev->wiphy.rts_threshold = old_rts_threshold;
3425 rdev->wiphy.coverage_class = old_coverage_class;
3426 rdev->wiphy.txq_limit = old_txq_limit;
3427 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3428 rdev->wiphy.txq_quantum = old_txq_quantum;
3429 return result;
3430 }
3431 }
3432 return 0;
3433 }
3434
3435 static int nl80211_send_chandef(struct sk_buff *msg,
3436 const struct cfg80211_chan_def *chandef)
3437 {
3438 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3439 return -EINVAL;
3440
3441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3442 chandef->chan->center_freq))
3443 return -ENOBUFS;
3444 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3445 chandef->chan->freq_offset))
3446 return -ENOBUFS;
3447 switch (chandef->width) {
3448 case NL80211_CHAN_WIDTH_20_NOHT:
3449 case NL80211_CHAN_WIDTH_20:
3450 case NL80211_CHAN_WIDTH_40:
3451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3452 cfg80211_get_chandef_type(chandef)))
3453 return -ENOBUFS;
3454 break;
3455 default:
3456 break;
3457 }
3458 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3459 return -ENOBUFS;
3460 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3461 return -ENOBUFS;
3462 if (chandef->center_freq2 &&
3463 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3464 return -ENOBUFS;
3465 return 0;
3466 }
3467
3468 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3469 struct cfg80211_registered_device *rdev,
3470 struct wireless_dev *wdev,
3471 enum nl80211_commands cmd)
3472 {
3473 struct net_device *dev = wdev->netdev;
3474 void *hdr;
3475
3476 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3477 cmd != NL80211_CMD_DEL_INTERFACE &&
3478 cmd != NL80211_CMD_SET_INTERFACE);
3479
3480 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3481 if (!hdr)
3482 return -1;
3483
3484 if (dev &&
3485 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3486 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3487 goto nla_put_failure;
3488
3489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3490 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3491 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3492 NL80211_ATTR_PAD) ||
3493 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3494 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3495 rdev->devlist_generation ^
3496 (cfg80211_rdev_list_generation << 2)) ||
3497 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3498 goto nla_put_failure;
3499
3500 if (rdev->ops->get_channel) {
3501 int ret;
3502 struct cfg80211_chan_def chandef = {};
3503
3504 ret = rdev_get_channel(rdev, wdev, &chandef);
3505 if (ret == 0) {
3506 if (nl80211_send_chandef(msg, &chandef))
3507 goto nla_put_failure;
3508 }
3509 }
3510
3511 if (rdev->ops->get_tx_power) {
3512 int dbm, ret;
3513
3514 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3515 if (ret == 0 &&
3516 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3517 DBM_TO_MBM(dbm)))
3518 goto nla_put_failure;
3519 }
3520
3521 wdev_lock(wdev);
3522 switch (wdev->iftype) {
3523 case NL80211_IFTYPE_AP:
3524 if (wdev->ssid_len &&
3525 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3526 goto nla_put_failure_locked;
3527 break;
3528 case NL80211_IFTYPE_STATION:
3529 case NL80211_IFTYPE_P2P_CLIENT:
3530 case NL80211_IFTYPE_ADHOC: {
3531 const u8 *ssid_ie;
3532 if (!wdev->current_bss)
3533 break;
3534 rcu_read_lock();
3535 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3536 WLAN_EID_SSID);
3537 if (ssid_ie &&
3538 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3539 goto nla_put_failure_rcu_locked;
3540 rcu_read_unlock();
3541 break;
3542 }
3543 default:
3544 /* nothing */
3545 break;
3546 }
3547 wdev_unlock(wdev);
3548
3549 if (rdev->ops->get_txq_stats) {
3550 struct cfg80211_txq_stats txqstats = {};
3551 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3552
3553 if (ret == 0 &&
3554 !nl80211_put_txq_stats(msg, &txqstats,
3555 NL80211_ATTR_TXQ_STATS))
3556 goto nla_put_failure;
3557 }
3558
3559 genlmsg_end(msg, hdr);
3560 return 0;
3561
3562 nla_put_failure_rcu_locked:
3563 rcu_read_unlock();
3564 nla_put_failure_locked:
3565 wdev_unlock(wdev);
3566 nla_put_failure:
3567 genlmsg_cancel(msg, hdr);
3568 return -EMSGSIZE;
3569 }
3570
3571 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3572 {
3573 int wp_idx = 0;
3574 int if_idx = 0;
3575 int wp_start = cb->args[0];
3576 int if_start = cb->args[1];
3577 int filter_wiphy = -1;
3578 struct cfg80211_registered_device *rdev;
3579 struct wireless_dev *wdev;
3580 int ret;
3581
3582 rtnl_lock();
3583 if (!cb->args[2]) {
3584 struct nl80211_dump_wiphy_state state = {
3585 .filter_wiphy = -1,
3586 };
3587
3588 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3589 if (ret)
3590 goto out_unlock;
3591
3592 filter_wiphy = state.filter_wiphy;
3593
3594 /*
3595 * if filtering, set cb->args[2] to +1 since 0 is the default
3596 * value needed to determine that parsing is necessary.
3597 */
3598 if (filter_wiphy >= 0)
3599 cb->args[2] = filter_wiphy + 1;
3600 else
3601 cb->args[2] = -1;
3602 } else if (cb->args[2] > 0) {
3603 filter_wiphy = cb->args[2] - 1;
3604 }
3605
3606 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3607 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3608 continue;
3609 if (wp_idx < wp_start) {
3610 wp_idx++;
3611 continue;
3612 }
3613
3614 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3615 continue;
3616
3617 if_idx = 0;
3618
3619 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3620 if (if_idx < if_start) {
3621 if_idx++;
3622 continue;
3623 }
3624 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3625 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3626 rdev, wdev,
3627 NL80211_CMD_NEW_INTERFACE) < 0) {
3628 goto out;
3629 }
3630 if_idx++;
3631 }
3632
3633 wp_idx++;
3634 }
3635 out:
3636 cb->args[0] = wp_idx;
3637 cb->args[1] = if_idx;
3638
3639 ret = skb->len;
3640 out_unlock:
3641 rtnl_unlock();
3642
3643 return ret;
3644 }
3645
3646 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3647 {
3648 struct sk_buff *msg;
3649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3650 struct wireless_dev *wdev = info->user_ptr[1];
3651
3652 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3653 if (!msg)
3654 return -ENOMEM;
3655
3656 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3657 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3658 nlmsg_free(msg);
3659 return -ENOBUFS;
3660 }
3661
3662 return genlmsg_reply(msg, info);
3663 }
3664
3665 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3666 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3667 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3668 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3669 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3670 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3671 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3672 };
3673
3674 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3675 {
3676 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3677 int flag;
3678
3679 *mntrflags = 0;
3680
3681 if (!nla)
3682 return -EINVAL;
3683
3684 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3685 return -EINVAL;
3686
3687 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3688 if (flags[flag])
3689 *mntrflags |= (1<<flag);
3690
3691 *mntrflags |= MONITOR_FLAG_CHANGED;
3692
3693 return 0;
3694 }
3695
3696 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3697 enum nl80211_iftype type,
3698 struct genl_info *info,
3699 struct vif_params *params)
3700 {
3701 bool change = false;
3702 int err;
3703
3704 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3705 if (type != NL80211_IFTYPE_MONITOR)
3706 return -EINVAL;
3707
3708 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3709 &params->flags);
3710 if (err)
3711 return err;
3712
3713 change = true;
3714 }
3715
3716 if (params->flags & MONITOR_FLAG_ACTIVE &&
3717 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3718 return -EOPNOTSUPP;
3719
3720 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3721 const u8 *mumimo_groups;
3722 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3723
3724 if (type != NL80211_IFTYPE_MONITOR)
3725 return -EINVAL;
3726
3727 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3728 return -EOPNOTSUPP;
3729
3730 mumimo_groups =
3731 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3732
3733 /* bits 0 and 63 are reserved and must be zero */
3734 if ((mumimo_groups[0] & BIT(0)) ||
3735 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3736 return -EINVAL;
3737
3738 params->vht_mumimo_groups = mumimo_groups;
3739 change = true;
3740 }
3741
3742 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3743 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3744
3745 if (type != NL80211_IFTYPE_MONITOR)
3746 return -EINVAL;
3747
3748 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3749 return -EOPNOTSUPP;
3750
3751 params->vht_mumimo_follow_addr =
3752 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3753 change = true;
3754 }
3755
3756 return change ? 1 : 0;
3757 }
3758
3759 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3760 struct net_device *netdev, u8 use_4addr,
3761 enum nl80211_iftype iftype)
3762 {
3763 if (!use_4addr) {
3764 if (netdev && netif_is_bridge_port(netdev))
3765 return -EBUSY;
3766 return 0;
3767 }
3768
3769 switch (iftype) {
3770 case NL80211_IFTYPE_AP_VLAN:
3771 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3772 return 0;
3773 break;
3774 case NL80211_IFTYPE_STATION:
3775 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3776 return 0;
3777 break;
3778 default:
3779 break;
3780 }
3781
3782 return -EOPNOTSUPP;
3783 }
3784
3785 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3786 {
3787 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3788 struct vif_params params;
3789 int err;
3790 enum nl80211_iftype otype, ntype;
3791 struct net_device *dev = info->user_ptr[1];
3792 bool change = false;
3793
3794 memset(&params, 0, sizeof(params));
3795
3796 otype = ntype = dev->ieee80211_ptr->iftype;
3797
3798 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3799 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3800 if (otype != ntype)
3801 change = true;
3802 }
3803
3804 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3805 struct wireless_dev *wdev = dev->ieee80211_ptr;
3806
3807 if (ntype != NL80211_IFTYPE_MESH_POINT)
3808 return -EINVAL;
3809 if (netif_running(dev))
3810 return -EBUSY;
3811
3812 wdev_lock(wdev);
3813 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3814 IEEE80211_MAX_MESH_ID_LEN);
3815 wdev->mesh_id_up_len =
3816 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3817 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3818 wdev->mesh_id_up_len);
3819 wdev_unlock(wdev);
3820 }
3821
3822 if (info->attrs[NL80211_ATTR_4ADDR]) {
3823 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3824 change = true;
3825 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3826 if (err)
3827 return err;
3828 } else {
3829 params.use_4addr = -1;
3830 }
3831
3832 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3833 if (err < 0)
3834 return err;
3835 if (err > 0)
3836 change = true;
3837
3838 if (change)
3839 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3840 else
3841 err = 0;
3842
3843 if (!err && params.use_4addr != -1)
3844 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3845
3846 if (change && !err) {
3847 struct wireless_dev *wdev = dev->ieee80211_ptr;
3848
3849 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3850 }
3851
3852 return err;
3853 }
3854
3855 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3856 {
3857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3858 struct vif_params params;
3859 struct wireless_dev *wdev;
3860 struct sk_buff *msg;
3861 int err;
3862 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3863
3864 /* to avoid failing a new interface creation due to pending removal */
3865 cfg80211_destroy_ifaces(rdev);
3866
3867 memset(&params, 0, sizeof(params));
3868
3869 if (!info->attrs[NL80211_ATTR_IFNAME])
3870 return -EINVAL;
3871
3872 if (info->attrs[NL80211_ATTR_IFTYPE])
3873 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3874
3875 if (!rdev->ops->add_virtual_intf)
3876 return -EOPNOTSUPP;
3877
3878 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3879 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3880 info->attrs[NL80211_ATTR_MAC]) {
3881 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3882 ETH_ALEN);
3883 if (!is_valid_ether_addr(params.macaddr))
3884 return -EADDRNOTAVAIL;
3885 }
3886
3887 if (info->attrs[NL80211_ATTR_4ADDR]) {
3888 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3889 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3890 if (err)
3891 return err;
3892 }
3893
3894 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3895 return -EOPNOTSUPP;
3896
3897 err = nl80211_parse_mon_options(rdev, type, info, &params);
3898 if (err < 0)
3899 return err;
3900
3901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3902 if (!msg)
3903 return -ENOMEM;
3904
3905 wdev = rdev_add_virtual_intf(rdev,
3906 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3907 NET_NAME_USER, type, &params);
3908 if (WARN_ON(!wdev)) {
3909 nlmsg_free(msg);
3910 return -EPROTO;
3911 } else if (IS_ERR(wdev)) {
3912 nlmsg_free(msg);
3913 return PTR_ERR(wdev);
3914 }
3915
3916 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3917 wdev->owner_nlportid = info->snd_portid;
3918
3919 switch (type) {
3920 case NL80211_IFTYPE_MESH_POINT:
3921 if (!info->attrs[NL80211_ATTR_MESH_ID])
3922 break;
3923 wdev_lock(wdev);
3924 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3925 IEEE80211_MAX_MESH_ID_LEN);
3926 wdev->mesh_id_up_len =
3927 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3928 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3929 wdev->mesh_id_up_len);
3930 wdev_unlock(wdev);
3931 break;
3932 case NL80211_IFTYPE_NAN:
3933 case NL80211_IFTYPE_P2P_DEVICE:
3934 /*
3935 * P2P Device and NAN do not have a netdev, so don't go
3936 * through the netdev notifier and must be added here
3937 */
3938 cfg80211_init_wdev(wdev);
3939 cfg80211_register_wdev(rdev, wdev);
3940 break;
3941 default:
3942 break;
3943 }
3944
3945 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3946 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3947 nlmsg_free(msg);
3948 return -ENOBUFS;
3949 }
3950
3951 return genlmsg_reply(msg, info);
3952 }
3953
3954 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3955 {
3956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3957 struct wireless_dev *wdev = info->user_ptr[1];
3958
3959 if (!rdev->ops->del_virtual_intf)
3960 return -EOPNOTSUPP;
3961
3962 /*
3963 * If we remove a wireless device without a netdev then clear
3964 * user_ptr[1] so that nl80211_post_doit won't dereference it
3965 * to check if it needs to do dev_put(). Otherwise it crashes
3966 * since the wdev has been freed, unlike with a netdev where
3967 * we need the dev_put() for the netdev to really be freed.
3968 */
3969 if (!wdev->netdev)
3970 info->user_ptr[1] = NULL;
3971
3972 return rdev_del_virtual_intf(rdev, wdev);
3973 }
3974
3975 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3976 {
3977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3978 struct net_device *dev = info->user_ptr[1];
3979 u16 noack_map;
3980
3981 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3982 return -EINVAL;
3983
3984 if (!rdev->ops->set_noack_map)
3985 return -EOPNOTSUPP;
3986
3987 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3988
3989 return rdev_set_noack_map(rdev, dev, noack_map);
3990 }
3991
3992 struct get_key_cookie {
3993 struct sk_buff *msg;
3994 int error;
3995 int idx;
3996 };
3997
3998 static void get_key_callback(void *c, struct key_params *params)
3999 {
4000 struct nlattr *key;
4001 struct get_key_cookie *cookie = c;
4002
4003 if ((params->key &&
4004 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4005 params->key_len, params->key)) ||
4006 (params->seq &&
4007 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4008 params->seq_len, params->seq)) ||
4009 (params->cipher &&
4010 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4011 params->cipher)))
4012 goto nla_put_failure;
4013
4014 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4015 if (!key)
4016 goto nla_put_failure;
4017
4018 if ((params->key &&
4019 nla_put(cookie->msg, NL80211_KEY_DATA,
4020 params->key_len, params->key)) ||
4021 (params->seq &&
4022 nla_put(cookie->msg, NL80211_KEY_SEQ,
4023 params->seq_len, params->seq)) ||
4024 (params->cipher &&
4025 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4026 params->cipher)))
4027 goto nla_put_failure;
4028
4029 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4030 goto nla_put_failure;
4031
4032 nla_nest_end(cookie->msg, key);
4033
4034 return;
4035 nla_put_failure:
4036 cookie->error = 1;
4037 }
4038
4039 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4040 {
4041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4042 int err;
4043 struct net_device *dev = info->user_ptr[1];
4044 u8 key_idx = 0;
4045 const u8 *mac_addr = NULL;
4046 bool pairwise;
4047 struct get_key_cookie cookie = {
4048 .error = 0,
4049 };
4050 void *hdr;
4051 struct sk_buff *msg;
4052 bool bigtk_support = false;
4053
4054 if (wiphy_ext_feature_isset(&rdev->wiphy,
4055 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4056 bigtk_support = true;
4057
4058 if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4059 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4060 wiphy_ext_feature_isset(&rdev->wiphy,
4061 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4062 bigtk_support = true;
4063
4064 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4065 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4066
4067 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4068 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4069 return -EINVAL;
4070 }
4071 }
4072
4073 if (info->attrs[NL80211_ATTR_MAC])
4074 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4075
4076 pairwise = !!mac_addr;
4077 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4078 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4079
4080 if (kt != NL80211_KEYTYPE_GROUP &&
4081 kt != NL80211_KEYTYPE_PAIRWISE)
4082 return -EINVAL;
4083 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4084 }
4085
4086 if (!rdev->ops->get_key)
4087 return -EOPNOTSUPP;
4088
4089 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4090 return -ENOENT;
4091
4092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4093 if (!msg)
4094 return -ENOMEM;
4095
4096 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4097 NL80211_CMD_NEW_KEY);
4098 if (!hdr)
4099 goto nla_put_failure;
4100
4101 cookie.msg = msg;
4102 cookie.idx = key_idx;
4103
4104 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4105 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4106 goto nla_put_failure;
4107 if (mac_addr &&
4108 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4109 goto nla_put_failure;
4110
4111 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4112 get_key_callback);
4113
4114 if (err)
4115 goto free_msg;
4116
4117 if (cookie.error)
4118 goto nla_put_failure;
4119
4120 genlmsg_end(msg, hdr);
4121 return genlmsg_reply(msg, info);
4122
4123 nla_put_failure:
4124 err = -ENOBUFS;
4125 free_msg:
4126 nlmsg_free(msg);
4127 return err;
4128 }
4129
4130 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4131 {
4132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4133 struct key_parse key;
4134 int err;
4135 struct net_device *dev = info->user_ptr[1];
4136
4137 err = nl80211_parse_key(info, &key);
4138 if (err)
4139 return err;
4140
4141 if (key.idx < 0)
4142 return -EINVAL;
4143
4144 /* Only support setting default key and
4145 * Extended Key ID action NL80211_KEY_SET_TX.
4146 */
4147 if (!key.def && !key.defmgmt && !key.defbeacon &&
4148 !(key.p.mode == NL80211_KEY_SET_TX))
4149 return -EINVAL;
4150
4151 wdev_lock(dev->ieee80211_ptr);
4152
4153 if (key.def) {
4154 if (!rdev->ops->set_default_key) {
4155 err = -EOPNOTSUPP;
4156 goto out;
4157 }
4158
4159 err = nl80211_key_allowed(dev->ieee80211_ptr);
4160 if (err)
4161 goto out;
4162
4163 err = rdev_set_default_key(rdev, dev, key.idx,
4164 key.def_uni, key.def_multi);
4165
4166 if (err)
4167 goto out;
4168
4169 #ifdef CONFIG_CFG80211_WEXT
4170 dev->ieee80211_ptr->wext.default_key = key.idx;
4171 #endif
4172 } else if (key.defmgmt) {
4173 if (key.def_uni || !key.def_multi) {
4174 err = -EINVAL;
4175 goto out;
4176 }
4177
4178 if (!rdev->ops->set_default_mgmt_key) {
4179 err = -EOPNOTSUPP;
4180 goto out;
4181 }
4182
4183 err = nl80211_key_allowed(dev->ieee80211_ptr);
4184 if (err)
4185 goto out;
4186
4187 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4188 if (err)
4189 goto out;
4190
4191 #ifdef CONFIG_CFG80211_WEXT
4192 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4193 #endif
4194 } else if (key.defbeacon) {
4195 if (key.def_uni || !key.def_multi) {
4196 err = -EINVAL;
4197 goto out;
4198 }
4199
4200 if (!rdev->ops->set_default_beacon_key) {
4201 err = -EOPNOTSUPP;
4202 goto out;
4203 }
4204
4205 err = nl80211_key_allowed(dev->ieee80211_ptr);
4206 if (err)
4207 goto out;
4208
4209 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4210 if (err)
4211 goto out;
4212 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4213 wiphy_ext_feature_isset(&rdev->wiphy,
4214 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4215 u8 *mac_addr = NULL;
4216
4217 if (info->attrs[NL80211_ATTR_MAC])
4218 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4219
4220 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4221 err = -EINVAL;
4222 goto out;
4223 }
4224
4225 err = rdev_add_key(rdev, dev, key.idx,
4226 NL80211_KEYTYPE_PAIRWISE,
4227 mac_addr, &key.p);
4228 } else {
4229 err = -EINVAL;
4230 }
4231 out:
4232 wdev_unlock(dev->ieee80211_ptr);
4233
4234 return err;
4235 }
4236
4237 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4238 {
4239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4240 int err;
4241 struct net_device *dev = info->user_ptr[1];
4242 struct key_parse key;
4243 const u8 *mac_addr = NULL;
4244
4245 err = nl80211_parse_key(info, &key);
4246 if (err)
4247 return err;
4248
4249 if (!key.p.key) {
4250 GENL_SET_ERR_MSG(info, "no key");
4251 return -EINVAL;
4252 }
4253
4254 if (info->attrs[NL80211_ATTR_MAC])
4255 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4256
4257 if (key.type == -1) {
4258 if (mac_addr)
4259 key.type = NL80211_KEYTYPE_PAIRWISE;
4260 else
4261 key.type = NL80211_KEYTYPE_GROUP;
4262 }
4263
4264 /* for now */
4265 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4266 key.type != NL80211_KEYTYPE_GROUP) {
4267 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4268 return -EINVAL;
4269 }
4270
4271 if (key.type == NL80211_KEYTYPE_GROUP &&
4272 info->attrs[NL80211_ATTR_VLAN_ID])
4273 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4274
4275 if (!rdev->ops->add_key)
4276 return -EOPNOTSUPP;
4277
4278 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4279 key.type == NL80211_KEYTYPE_PAIRWISE,
4280 mac_addr)) {
4281 GENL_SET_ERR_MSG(info, "key setting validation failed");
4282 return -EINVAL;
4283 }
4284
4285 wdev_lock(dev->ieee80211_ptr);
4286 err = nl80211_key_allowed(dev->ieee80211_ptr);
4287 if (err)
4288 GENL_SET_ERR_MSG(info, "key not allowed");
4289 if (!err) {
4290 err = rdev_add_key(rdev, dev, key.idx,
4291 key.type == NL80211_KEYTYPE_PAIRWISE,
4292 mac_addr, &key.p);
4293 if (err)
4294 GENL_SET_ERR_MSG(info, "key addition failed");
4295 }
4296 wdev_unlock(dev->ieee80211_ptr);
4297
4298 return err;
4299 }
4300
4301 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4302 {
4303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4304 int err;
4305 struct net_device *dev = info->user_ptr[1];
4306 u8 *mac_addr = NULL;
4307 struct key_parse key;
4308
4309 err = nl80211_parse_key(info, &key);
4310 if (err)
4311 return err;
4312
4313 if (info->attrs[NL80211_ATTR_MAC])
4314 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4315
4316 if (key.type == -1) {
4317 if (mac_addr)
4318 key.type = NL80211_KEYTYPE_PAIRWISE;
4319 else
4320 key.type = NL80211_KEYTYPE_GROUP;
4321 }
4322
4323 /* for now */
4324 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4325 key.type != NL80211_KEYTYPE_GROUP)
4326 return -EINVAL;
4327
4328 if (!cfg80211_valid_key_idx(rdev, key.idx,
4329 key.type == NL80211_KEYTYPE_PAIRWISE))
4330 return -EINVAL;
4331
4332 if (!rdev->ops->del_key)
4333 return -EOPNOTSUPP;
4334
4335 wdev_lock(dev->ieee80211_ptr);
4336 err = nl80211_key_allowed(dev->ieee80211_ptr);
4337
4338 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4339 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4340 err = -ENOENT;
4341
4342 if (!err)
4343 err = rdev_del_key(rdev, dev, key.idx,
4344 key.type == NL80211_KEYTYPE_PAIRWISE,
4345 mac_addr);
4346
4347 #ifdef CONFIG_CFG80211_WEXT
4348 if (!err) {
4349 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4350 dev->ieee80211_ptr->wext.default_key = -1;
4351 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4352 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4353 }
4354 #endif
4355 wdev_unlock(dev->ieee80211_ptr);
4356
4357 return err;
4358 }
4359
4360 /* This function returns an error or the number of nested attributes */
4361 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4362 {
4363 struct nlattr *attr;
4364 int n_entries = 0, tmp;
4365
4366 nla_for_each_nested(attr, nl_attr, tmp) {
4367 if (nla_len(attr) != ETH_ALEN)
4368 return -EINVAL;
4369
4370 n_entries++;
4371 }
4372
4373 return n_entries;
4374 }
4375
4376 /*
4377 * This function parses ACL information and allocates memory for ACL data.
4378 * On successful return, the calling function is responsible to free the
4379 * ACL buffer returned by this function.
4380 */
4381 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4382 struct genl_info *info)
4383 {
4384 enum nl80211_acl_policy acl_policy;
4385 struct nlattr *attr;
4386 struct cfg80211_acl_data *acl;
4387 int i = 0, n_entries, tmp;
4388
4389 if (!wiphy->max_acl_mac_addrs)
4390 return ERR_PTR(-EOPNOTSUPP);
4391
4392 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4393 return ERR_PTR(-EINVAL);
4394
4395 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4396 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4397 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4398 return ERR_PTR(-EINVAL);
4399
4400 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4401 return ERR_PTR(-EINVAL);
4402
4403 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4404 if (n_entries < 0)
4405 return ERR_PTR(n_entries);
4406
4407 if (n_entries > wiphy->max_acl_mac_addrs)
4408 return ERR_PTR(-ENOTSUPP);
4409
4410 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4411 if (!acl)
4412 return ERR_PTR(-ENOMEM);
4413
4414 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4415 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4416 i++;
4417 }
4418
4419 acl->n_acl_entries = n_entries;
4420 acl->acl_policy = acl_policy;
4421
4422 return acl;
4423 }
4424
4425 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4426 {
4427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4428 struct net_device *dev = info->user_ptr[1];
4429 struct cfg80211_acl_data *acl;
4430 int err;
4431
4432 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4433 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4434 return -EOPNOTSUPP;
4435
4436 if (!dev->ieee80211_ptr->beacon_interval)
4437 return -EINVAL;
4438
4439 acl = parse_acl_data(&rdev->wiphy, info);
4440 if (IS_ERR(acl))
4441 return PTR_ERR(acl);
4442
4443 err = rdev_set_mac_acl(rdev, dev, acl);
4444
4445 kfree(acl);
4446
4447 return err;
4448 }
4449
4450 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4451 u8 *rates, u8 rates_len)
4452 {
4453 u8 i;
4454 u32 mask = 0;
4455
4456 for (i = 0; i < rates_len; i++) {
4457 int rate = (rates[i] & 0x7f) * 5;
4458 int ridx;
4459
4460 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4461 struct ieee80211_rate *srate =
4462 &sband->bitrates[ridx];
4463 if (rate == srate->bitrate) {
4464 mask |= 1 << ridx;
4465 break;
4466 }
4467 }
4468 if (ridx == sband->n_bitrates)
4469 return 0; /* rate not found */
4470 }
4471
4472 return mask;
4473 }
4474
4475 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4476 u8 *rates, u8 rates_len,
4477 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4478 {
4479 u8 i;
4480
4481 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4482
4483 for (i = 0; i < rates_len; i++) {
4484 int ridx, rbit;
4485
4486 ridx = rates[i] / 8;
4487 rbit = BIT(rates[i] % 8);
4488
4489 /* check validity */
4490 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4491 return false;
4492
4493 /* check availability */
4494 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4495 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4496 mcs[ridx] |= rbit;
4497 else
4498 return false;
4499 }
4500
4501 return true;
4502 }
4503
4504 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4505 {
4506 u16 mcs_mask = 0;
4507
4508 switch (vht_mcs_map) {
4509 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4510 break;
4511 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4512 mcs_mask = 0x00FF;
4513 break;
4514 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4515 mcs_mask = 0x01FF;
4516 break;
4517 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4518 mcs_mask = 0x03FF;
4519 break;
4520 default:
4521 break;
4522 }
4523
4524 return mcs_mask;
4525 }
4526
4527 static void vht_build_mcs_mask(u16 vht_mcs_map,
4528 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4529 {
4530 u8 nss;
4531
4532 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4533 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4534 vht_mcs_map >>= 2;
4535 }
4536 }
4537
4538 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4539 struct nl80211_txrate_vht *txrate,
4540 u16 mcs[NL80211_VHT_NSS_MAX])
4541 {
4542 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4543 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4544 u8 i;
4545
4546 if (!sband->vht_cap.vht_supported)
4547 return false;
4548
4549 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4550
4551 /* Build vht_mcs_mask from VHT capabilities */
4552 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4553
4554 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4555 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4556 mcs[i] = txrate->mcs[i];
4557 else
4558 return false;
4559 }
4560
4561 return true;
4562 }
4563
4564 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4565 {
4566 switch (he_mcs_map) {
4567 case IEEE80211_HE_MCS_NOT_SUPPORTED:
4568 return 0;
4569 case IEEE80211_HE_MCS_SUPPORT_0_7:
4570 return 0x00FF;
4571 case IEEE80211_HE_MCS_SUPPORT_0_9:
4572 return 0x03FF;
4573 case IEEE80211_HE_MCS_SUPPORT_0_11:
4574 return 0xFFF;
4575 default:
4576 break;
4577 }
4578 return 0;
4579 }
4580
4581 static void he_build_mcs_mask(u16 he_mcs_map,
4582 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4583 {
4584 u8 nss;
4585
4586 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4587 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4588 he_mcs_map >>= 2;
4589 }
4590 }
4591
4592 static u16 he_get_txmcsmap(struct genl_info *info,
4593 const struct ieee80211_sta_he_cap *he_cap)
4594 {
4595 struct net_device *dev = info->user_ptr[1];
4596 struct wireless_dev *wdev = dev->ieee80211_ptr;
4597 __le16 tx_mcs;
4598
4599 switch (wdev->chandef.width) {
4600 case NL80211_CHAN_WIDTH_80P80:
4601 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4602 break;
4603 case NL80211_CHAN_WIDTH_160:
4604 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4605 break;
4606 default:
4607 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4608 break;
4609 }
4610 return le16_to_cpu(tx_mcs);
4611 }
4612
4613 static bool he_set_mcs_mask(struct genl_info *info,
4614 struct wireless_dev *wdev,
4615 struct ieee80211_supported_band *sband,
4616 struct nl80211_txrate_he *txrate,
4617 u16 mcs[NL80211_HE_NSS_MAX])
4618 {
4619 const struct ieee80211_sta_he_cap *he_cap;
4620 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4621 u16 tx_mcs_map = 0;
4622 u8 i;
4623
4624 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4625 if (!he_cap)
4626 return false;
4627
4628 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4629
4630 tx_mcs_map = he_get_txmcsmap(info, he_cap);
4631
4632 /* Build he_mcs_mask from HE capabilities */
4633 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4634
4635 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4636 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4637 mcs[i] = txrate->mcs[i];
4638 else
4639 return false;
4640 }
4641
4642 return true;
4643 }
4644
4645 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4646 struct nlattr *attrs[],
4647 enum nl80211_attrs attr,
4648 struct cfg80211_bitrate_mask *mask,
4649 struct net_device *dev,
4650 bool default_all_enabled)
4651 {
4652 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4654 struct wireless_dev *wdev = dev->ieee80211_ptr;
4655 int rem, i;
4656 struct nlattr *tx_rates;
4657 struct ieee80211_supported_band *sband;
4658 u16 vht_tx_mcs_map, he_tx_mcs_map;
4659
4660 memset(mask, 0, sizeof(*mask));
4661 /* Default to all rates enabled */
4662 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4663 const struct ieee80211_sta_he_cap *he_cap;
4664
4665 if (!default_all_enabled)
4666 break;
4667
4668 sband = rdev->wiphy.bands[i];
4669
4670 if (!sband)
4671 continue;
4672
4673 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4674 memcpy(mask->control[i].ht_mcs,
4675 sband->ht_cap.mcs.rx_mask,
4676 sizeof(mask->control[i].ht_mcs));
4677
4678 if (!sband->vht_cap.vht_supported)
4679 continue;
4680
4681 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4682 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4683
4684 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4685 if (!he_cap)
4686 continue;
4687
4688 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4689 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4690
4691 mask->control[i].he_gi = 0xFF;
4692 mask->control[i].he_ltf = 0xFF;
4693 }
4694
4695 /* if no rates are given set it back to the defaults */
4696 if (!attrs[attr])
4697 goto out;
4698
4699 /* The nested attribute uses enum nl80211_band as the index. This maps
4700 * directly to the enum nl80211_band values used in cfg80211.
4701 */
4702 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4703 nla_for_each_nested(tx_rates, attrs[attr], rem) {
4704 enum nl80211_band band = nla_type(tx_rates);
4705 int err;
4706
4707 if (band < 0 || band >= NUM_NL80211_BANDS)
4708 return -EINVAL;
4709 sband = rdev->wiphy.bands[band];
4710 if (sband == NULL)
4711 return -EINVAL;
4712 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4713 tx_rates,
4714 nl80211_txattr_policy,
4715 info->extack);
4716 if (err)
4717 return err;
4718 if (tb[NL80211_TXRATE_LEGACY]) {
4719 mask->control[band].legacy = rateset_to_mask(
4720 sband,
4721 nla_data(tb[NL80211_TXRATE_LEGACY]),
4722 nla_len(tb[NL80211_TXRATE_LEGACY]));
4723 if ((mask->control[band].legacy == 0) &&
4724 nla_len(tb[NL80211_TXRATE_LEGACY]))
4725 return -EINVAL;
4726 }
4727 if (tb[NL80211_TXRATE_HT]) {
4728 if (!ht_rateset_to_mask(
4729 sband,
4730 nla_data(tb[NL80211_TXRATE_HT]),
4731 nla_len(tb[NL80211_TXRATE_HT]),
4732 mask->control[band].ht_mcs))
4733 return -EINVAL;
4734 }
4735
4736 if (tb[NL80211_TXRATE_VHT]) {
4737 if (!vht_set_mcs_mask(
4738 sband,
4739 nla_data(tb[NL80211_TXRATE_VHT]),
4740 mask->control[band].vht_mcs))
4741 return -EINVAL;
4742 }
4743
4744 if (tb[NL80211_TXRATE_GI]) {
4745 mask->control[band].gi =
4746 nla_get_u8(tb[NL80211_TXRATE_GI]);
4747 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4748 return -EINVAL;
4749 }
4750 if (tb[NL80211_TXRATE_HE] &&
4751 !he_set_mcs_mask(info, wdev, sband,
4752 nla_data(tb[NL80211_TXRATE_HE]),
4753 mask->control[band].he_mcs))
4754 return -EINVAL;
4755
4756 if (tb[NL80211_TXRATE_HE_GI])
4757 mask->control[band].he_gi =
4758 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4759 if (tb[NL80211_TXRATE_HE_LTF])
4760 mask->control[band].he_ltf =
4761 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4762
4763 if (mask->control[band].legacy == 0) {
4764 /* don't allow empty legacy rates if HT, VHT or HE
4765 * are not even supported.
4766 */
4767 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4768 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4769 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4770 return -EINVAL;
4771
4772 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4773 if (mask->control[band].ht_mcs[i])
4774 goto out;
4775
4776 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4777 if (mask->control[band].vht_mcs[i])
4778 goto out;
4779
4780 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4781 if (mask->control[band].he_mcs[i])
4782 goto out;
4783
4784 /* legacy and mcs rates may not be both empty */
4785 return -EINVAL;
4786 }
4787 }
4788
4789 out:
4790 return 0;
4791 }
4792
4793 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4794 enum nl80211_band band,
4795 struct cfg80211_bitrate_mask *beacon_rate)
4796 {
4797 u32 count_ht, count_vht, count_he, i;
4798 u32 rate = beacon_rate->control[band].legacy;
4799
4800 /* Allow only one rate */
4801 if (hweight32(rate) > 1)
4802 return -EINVAL;
4803
4804 count_ht = 0;
4805 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4806 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4807 return -EINVAL;
4808 } else if (beacon_rate->control[band].ht_mcs[i]) {
4809 count_ht++;
4810 if (count_ht > 1)
4811 return -EINVAL;
4812 }
4813 if (count_ht && rate)
4814 return -EINVAL;
4815 }
4816
4817 count_vht = 0;
4818 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4819 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4820 return -EINVAL;
4821 } else if (beacon_rate->control[band].vht_mcs[i]) {
4822 count_vht++;
4823 if (count_vht > 1)
4824 return -EINVAL;
4825 }
4826 if (count_vht && rate)
4827 return -EINVAL;
4828 }
4829
4830 count_he = 0;
4831 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4832 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4833 return -EINVAL;
4834 } else if (beacon_rate->control[band].he_mcs[i]) {
4835 count_he++;
4836 if (count_he > 1)
4837 return -EINVAL;
4838 }
4839 if (count_he && rate)
4840 return -EINVAL;
4841 }
4842
4843 if ((count_ht && count_vht && count_he) ||
4844 (!rate && !count_ht && !count_vht && !count_he))
4845 return -EINVAL;
4846
4847 if (rate &&
4848 !wiphy_ext_feature_isset(&rdev->wiphy,
4849 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4850 return -EINVAL;
4851 if (count_ht &&
4852 !wiphy_ext_feature_isset(&rdev->wiphy,
4853 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4854 return -EINVAL;
4855 if (count_vht &&
4856 !wiphy_ext_feature_isset(&rdev->wiphy,
4857 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4858 return -EINVAL;
4859 if (count_he &&
4860 !wiphy_ext_feature_isset(&rdev->wiphy,
4861 NL80211_EXT_FEATURE_BEACON_RATE_HE))
4862 return -EINVAL;
4863
4864 return 0;
4865 }
4866
4867 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4868 struct nlattr *attrs[],
4869 struct cfg80211_beacon_data *bcn)
4870 {
4871 bool haveinfo = false;
4872 int err;
4873
4874 memset(bcn, 0, sizeof(*bcn));
4875
4876 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4877 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4878 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4879 if (!bcn->head_len)
4880 return -EINVAL;
4881 haveinfo = true;
4882 }
4883
4884 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4885 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4886 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4887 haveinfo = true;
4888 }
4889
4890 if (!haveinfo)
4891 return -EINVAL;
4892
4893 if (attrs[NL80211_ATTR_IE]) {
4894 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4895 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4896 }
4897
4898 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4899 bcn->proberesp_ies =
4900 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4901 bcn->proberesp_ies_len =
4902 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4903 }
4904
4905 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4906 bcn->assocresp_ies =
4907 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4908 bcn->assocresp_ies_len =
4909 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4910 }
4911
4912 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4913 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4914 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4915 }
4916
4917 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4918 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4919
4920 err = nla_parse_nested_deprecated(tb,
4921 NL80211_FTM_RESP_ATTR_MAX,
4922 attrs[NL80211_ATTR_FTM_RESPONDER],
4923 NULL, NULL);
4924 if (err)
4925 return err;
4926
4927 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4928 wiphy_ext_feature_isset(&rdev->wiphy,
4929 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4930 bcn->ftm_responder = 1;
4931 else
4932 return -EOPNOTSUPP;
4933
4934 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4935 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4936 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4937 }
4938
4939 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4940 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4941 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4942 }
4943 } else {
4944 bcn->ftm_responder = -1;
4945 }
4946
4947 return 0;
4948 }
4949
4950 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4951 struct ieee80211_he_obss_pd *he_obss_pd)
4952 {
4953 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4954 int err;
4955
4956 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4957 he_obss_pd_policy, NULL);
4958 if (err)
4959 return err;
4960
4961 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4962 return -EINVAL;
4963
4964 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4965
4966 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4967 he_obss_pd->min_offset =
4968 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4969 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4970 he_obss_pd->max_offset =
4971 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4972 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4973 he_obss_pd->non_srg_max_offset =
4974 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4975
4976 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4977 return -EINVAL;
4978
4979 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4980 memcpy(he_obss_pd->bss_color_bitmap,
4981 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4982 sizeof(he_obss_pd->bss_color_bitmap));
4983
4984 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4985 memcpy(he_obss_pd->partial_bssid_bitmap,
4986 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4987 sizeof(he_obss_pd->partial_bssid_bitmap));
4988
4989 he_obss_pd->enable = true;
4990
4991 return 0;
4992 }
4993
4994 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4995 struct cfg80211_he_bss_color *he_bss_color)
4996 {
4997 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4998 int err;
4999
5000 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5001 he_bss_color_policy, NULL);
5002 if (err)
5003 return err;
5004
5005 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5006 return -EINVAL;
5007
5008 he_bss_color->color =
5009 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5010 he_bss_color->enabled =
5011 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5012 he_bss_color->partial =
5013 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5014
5015 return 0;
5016 }
5017
5018 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5019 struct nlattr *attrs,
5020 struct cfg80211_ap_settings *params)
5021 {
5022 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5023 int ret;
5024 struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5025
5026 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5027 NL80211_EXT_FEATURE_FILS_DISCOVERY))
5028 return -EINVAL;
5029
5030 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5031 NULL, NULL);
5032 if (ret)
5033 return ret;
5034
5035 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5036 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5037 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5038 return -EINVAL;
5039
5040 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5041 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5042 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5043 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5044
5045 return 0;
5046 }
5047
5048 static int
5049 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5050 struct nlattr *attrs,
5051 struct cfg80211_ap_settings *params)
5052 {
5053 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5054 int ret;
5055 struct cfg80211_unsol_bcast_probe_resp *presp =
5056 &params->unsol_bcast_probe_resp;
5057
5058 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5059 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5060 return -EINVAL;
5061
5062 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5063 attrs, NULL, NULL);
5064 if (ret)
5065 return ret;
5066
5067 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5068 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5069 return -EINVAL;
5070
5071 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5072 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5073 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5074 return 0;
5075 }
5076
5077 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5078 const u8 *rates)
5079 {
5080 int i;
5081
5082 if (!rates)
5083 return;
5084
5085 for (i = 0; i < rates[1]; i++) {
5086 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5087 params->ht_required = true;
5088 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5089 params->vht_required = true;
5090 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5091 params->he_required = true;
5092 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5093 params->sae_h2e_required = true;
5094 }
5095 }
5096
5097 /*
5098 * Since the nl80211 API didn't include, from the beginning, attributes about
5099 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5100 * benefit of drivers that rebuild IEs in the firmware.
5101 */
5102 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5103 {
5104 const struct cfg80211_beacon_data *bcn = &params->beacon;
5105 size_t ies_len = bcn->tail_len;
5106 const u8 *ies = bcn->tail;
5107 const u8 *rates;
5108 const u8 *cap;
5109
5110 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5111 nl80211_check_ap_rate_selectors(params, rates);
5112
5113 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5114 nl80211_check_ap_rate_selectors(params, rates);
5115
5116 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5117 if (cap && cap[1] >= sizeof(*params->ht_cap))
5118 params->ht_cap = (void *)(cap + 2);
5119 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5120 if (cap && cap[1] >= sizeof(*params->vht_cap))
5121 params->vht_cap = (void *)(cap + 2);
5122 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5123 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5124 params->he_cap = (void *)(cap + 3);
5125 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5126 if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5127 params->he_oper = (void *)(cap + 3);
5128 }
5129
5130 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5131 struct cfg80211_ap_settings *params)
5132 {
5133 struct wireless_dev *wdev;
5134 bool ret = false;
5135
5136 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5137 if (wdev->iftype != NL80211_IFTYPE_AP &&
5138 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5139 continue;
5140
5141 if (!wdev->preset_chandef.chan)
5142 continue;
5143
5144 params->chandef = wdev->preset_chandef;
5145 ret = true;
5146 break;
5147 }
5148
5149 return ret;
5150 }
5151
5152 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5153 enum nl80211_auth_type auth_type,
5154 enum nl80211_commands cmd)
5155 {
5156 if (auth_type > NL80211_AUTHTYPE_MAX)
5157 return false;
5158
5159 switch (cmd) {
5160 case NL80211_CMD_AUTHENTICATE:
5161 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5162 auth_type == NL80211_AUTHTYPE_SAE)
5163 return false;
5164 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5165 NL80211_EXT_FEATURE_FILS_STA) &&
5166 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5167 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5168 auth_type == NL80211_AUTHTYPE_FILS_PK))
5169 return false;
5170 return true;
5171 case NL80211_CMD_CONNECT:
5172 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5173 !wiphy_ext_feature_isset(&rdev->wiphy,
5174 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5175 auth_type == NL80211_AUTHTYPE_SAE)
5176 return false;
5177
5178 /* FILS with SK PFS or PK not supported yet */
5179 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5180 auth_type == NL80211_AUTHTYPE_FILS_PK)
5181 return false;
5182 if (!wiphy_ext_feature_isset(
5183 &rdev->wiphy,
5184 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5185 auth_type == NL80211_AUTHTYPE_FILS_SK)
5186 return false;
5187 return true;
5188 case NL80211_CMD_START_AP:
5189 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5190 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5191 auth_type == NL80211_AUTHTYPE_SAE)
5192 return false;
5193 /* FILS not supported yet */
5194 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5195 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5196 auth_type == NL80211_AUTHTYPE_FILS_PK)
5197 return false;
5198 return true;
5199 default:
5200 return false;
5201 }
5202 }
5203
5204 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5205 {
5206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5207 struct net_device *dev = info->user_ptr[1];
5208 struct wireless_dev *wdev = dev->ieee80211_ptr;
5209 struct cfg80211_ap_settings params;
5210 int err;
5211
5212 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5213 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5214 return -EOPNOTSUPP;
5215
5216 if (!rdev->ops->start_ap)
5217 return -EOPNOTSUPP;
5218
5219 if (wdev->beacon_interval)
5220 return -EALREADY;
5221
5222 memset(&params, 0, sizeof(params));
5223
5224 /* these are required for START_AP */
5225 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5226 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5227 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5228 return -EINVAL;
5229
5230 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5231 if (err)
5232 return err;
5233
5234 params.beacon_interval =
5235 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5236 params.dtim_period =
5237 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5238
5239 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5240 params.beacon_interval);
5241 if (err)
5242 return err;
5243
5244 /*
5245 * In theory, some of these attributes should be required here
5246 * but since they were not used when the command was originally
5247 * added, keep them optional for old user space programs to let
5248 * them continue to work with drivers that do not need the
5249 * additional information -- drivers must check!
5250 */
5251 if (info->attrs[NL80211_ATTR_SSID]) {
5252 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5253 params.ssid_len =
5254 nla_len(info->attrs[NL80211_ATTR_SSID]);
5255 if (params.ssid_len == 0)
5256 return -EINVAL;
5257 }
5258
5259 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5260 params.hidden_ssid = nla_get_u32(
5261 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5262
5263 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5264
5265 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5266 params.auth_type = nla_get_u32(
5267 info->attrs[NL80211_ATTR_AUTH_TYPE]);
5268 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5269 NL80211_CMD_START_AP))
5270 return -EINVAL;
5271 } else
5272 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5273
5274 err = nl80211_crypto_settings(rdev, info, &params.crypto,
5275 NL80211_MAX_NR_CIPHER_SUITES);
5276 if (err)
5277 return err;
5278
5279 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5280 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5281 return -EOPNOTSUPP;
5282 params.inactivity_timeout = nla_get_u16(
5283 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5284 }
5285
5286 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5287 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5288 return -EINVAL;
5289 params.p2p_ctwindow =
5290 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5291 if (params.p2p_ctwindow != 0 &&
5292 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5293 return -EINVAL;
5294 }
5295
5296 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5297 u8 tmp;
5298
5299 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5300 return -EINVAL;
5301 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5302 params.p2p_opp_ps = tmp;
5303 if (params.p2p_opp_ps != 0 &&
5304 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5305 return -EINVAL;
5306 }
5307
5308 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5309 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5310 if (err)
5311 return err;
5312 } else if (wdev->preset_chandef.chan) {
5313 params.chandef = wdev->preset_chandef;
5314 } else if (!nl80211_get_ap_channel(rdev, &params))
5315 return -EINVAL;
5316
5317 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5318 wdev->iftype))
5319 return -EINVAL;
5320
5321 if (info->attrs[NL80211_ATTR_TX_RATES]) {
5322 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5323 NL80211_ATTR_TX_RATES,
5324 &params.beacon_rate,
5325 dev, false);
5326 if (err)
5327 return err;
5328
5329 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5330 &params.beacon_rate);
5331 if (err)
5332 return err;
5333 }
5334
5335 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5336 params.smps_mode =
5337 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5338 switch (params.smps_mode) {
5339 case NL80211_SMPS_OFF:
5340 break;
5341 case NL80211_SMPS_STATIC:
5342 if (!(rdev->wiphy.features &
5343 NL80211_FEATURE_STATIC_SMPS))
5344 return -EINVAL;
5345 break;
5346 case NL80211_SMPS_DYNAMIC:
5347 if (!(rdev->wiphy.features &
5348 NL80211_FEATURE_DYNAMIC_SMPS))
5349 return -EINVAL;
5350 break;
5351 default:
5352 return -EINVAL;
5353 }
5354 } else {
5355 params.smps_mode = NL80211_SMPS_OFF;
5356 }
5357
5358 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5359 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5360 return -EOPNOTSUPP;
5361
5362 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5363 params.acl = parse_acl_data(&rdev->wiphy, info);
5364 if (IS_ERR(params.acl))
5365 return PTR_ERR(params.acl);
5366 }
5367
5368 params.twt_responder =
5369 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5370
5371 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5372 err = nl80211_parse_he_obss_pd(
5373 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5374 &params.he_obss_pd);
5375 if (err)
5376 goto out;
5377 }
5378
5379 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5380 err = nl80211_parse_he_bss_color(
5381 info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5382 &params.he_bss_color);
5383 if (err)
5384 goto out;
5385 }
5386
5387 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5388 err = nl80211_parse_fils_discovery(rdev,
5389 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5390 &params);
5391 if (err)
5392 goto out;
5393 }
5394
5395 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5396 err = nl80211_parse_unsol_bcast_probe_resp(
5397 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5398 &params);
5399 if (err)
5400 return err;
5401 }
5402
5403 nl80211_calculate_ap_params(&params);
5404
5405 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5406 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5407
5408 wdev_lock(wdev);
5409 err = rdev_start_ap(rdev, dev, &params);
5410 if (!err) {
5411 wdev->preset_chandef = params.chandef;
5412 wdev->beacon_interval = params.beacon_interval;
5413 wdev->chandef = params.chandef;
5414 wdev->ssid_len = params.ssid_len;
5415 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5416
5417 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5418 wdev->conn_owner_nlportid = info->snd_portid;
5419 }
5420 wdev_unlock(wdev);
5421
5422 out:
5423 kfree(params.acl);
5424
5425 return err;
5426 }
5427
5428 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5429 {
5430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5431 struct net_device *dev = info->user_ptr[1];
5432 struct wireless_dev *wdev = dev->ieee80211_ptr;
5433 struct cfg80211_beacon_data params;
5434 int err;
5435
5436 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5437 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5438 return -EOPNOTSUPP;
5439
5440 if (!rdev->ops->change_beacon)
5441 return -EOPNOTSUPP;
5442
5443 if (!wdev->beacon_interval)
5444 return -EINVAL;
5445
5446 err = nl80211_parse_beacon(rdev, info->attrs, &params);
5447 if (err)
5448 return err;
5449
5450 wdev_lock(wdev);
5451 err = rdev_change_beacon(rdev, dev, &params);
5452 wdev_unlock(wdev);
5453
5454 return err;
5455 }
5456
5457 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5458 {
5459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5460 struct net_device *dev = info->user_ptr[1];
5461
5462 return cfg80211_stop_ap(rdev, dev, false);
5463 }
5464
5465 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5466 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5467 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5468 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5469 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5470 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5471 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5472 };
5473
5474 static int parse_station_flags(struct genl_info *info,
5475 enum nl80211_iftype iftype,
5476 struct station_parameters *params)
5477 {
5478 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5479 struct nlattr *nla;
5480 int flag;
5481
5482 /*
5483 * Try parsing the new attribute first so userspace
5484 * can specify both for older kernels.
5485 */
5486 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5487 if (nla) {
5488 struct nl80211_sta_flag_update *sta_flags;
5489
5490 sta_flags = nla_data(nla);
5491 params->sta_flags_mask = sta_flags->mask;
5492 params->sta_flags_set = sta_flags->set;
5493 params->sta_flags_set &= params->sta_flags_mask;
5494 if ((params->sta_flags_mask |
5495 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5496 return -EINVAL;
5497 return 0;
5498 }
5499
5500 /* if present, parse the old attribute */
5501
5502 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5503 if (!nla)
5504 return 0;
5505
5506 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5507 return -EINVAL;
5508
5509 /*
5510 * Only allow certain flags for interface types so that
5511 * other attributes are silently ignored. Remember that
5512 * this is backward compatibility code with old userspace
5513 * and shouldn't be hit in other cases anyway.
5514 */
5515 switch (iftype) {
5516 case NL80211_IFTYPE_AP:
5517 case NL80211_IFTYPE_AP_VLAN:
5518 case NL80211_IFTYPE_P2P_GO:
5519 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5520 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5521 BIT(NL80211_STA_FLAG_WME) |
5522 BIT(NL80211_STA_FLAG_MFP);
5523 break;
5524 case NL80211_IFTYPE_P2P_CLIENT:
5525 case NL80211_IFTYPE_STATION:
5526 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5527 BIT(NL80211_STA_FLAG_TDLS_PEER);
5528 break;
5529 case NL80211_IFTYPE_MESH_POINT:
5530 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5531 BIT(NL80211_STA_FLAG_MFP) |
5532 BIT(NL80211_STA_FLAG_AUTHORIZED);
5533 break;
5534 default:
5535 return -EINVAL;
5536 }
5537
5538 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5539 if (flags[flag]) {
5540 params->sta_flags_set |= (1<<flag);
5541
5542 /* no longer support new API additions in old API */
5543 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5544 return -EINVAL;
5545 }
5546 }
5547
5548 return 0;
5549 }
5550
5551 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5552 {
5553 struct nlattr *rate;
5554 u32 bitrate;
5555 u16 bitrate_compat;
5556 enum nl80211_rate_info rate_flg;
5557
5558 rate = nla_nest_start_noflag(msg, attr);
5559 if (!rate)
5560 return false;
5561
5562 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5563 bitrate = cfg80211_calculate_bitrate(info);
5564 /* report 16-bit bitrate only if we can */
5565 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5566 if (bitrate > 0 &&
5567 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5568 return false;
5569 if (bitrate_compat > 0 &&
5570 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5571 return false;
5572
5573 switch (info->bw) {
5574 case RATE_INFO_BW_5:
5575 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5576 break;
5577 case RATE_INFO_BW_10:
5578 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5579 break;
5580 default:
5581 WARN_ON(1);
5582 fallthrough;
5583 case RATE_INFO_BW_20:
5584 rate_flg = 0;
5585 break;
5586 case RATE_INFO_BW_40:
5587 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5588 break;
5589 case RATE_INFO_BW_80:
5590 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5591 break;
5592 case RATE_INFO_BW_160:
5593 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5594 break;
5595 case RATE_INFO_BW_HE_RU:
5596 rate_flg = 0;
5597 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5598 }
5599
5600 if (rate_flg && nla_put_flag(msg, rate_flg))
5601 return false;
5602
5603 if (info->flags & RATE_INFO_FLAGS_MCS) {
5604 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5605 return false;
5606 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5607 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5608 return false;
5609 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5610 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5611 return false;
5612 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5613 return false;
5614 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5615 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5616 return false;
5617 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5618 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5619 return false;
5620 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5621 return false;
5622 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5623 return false;
5624 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5625 return false;
5626 if (info->bw == RATE_INFO_BW_HE_RU &&
5627 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5628 info->he_ru_alloc))
5629 return false;
5630 }
5631
5632 nla_nest_end(msg, rate);
5633 return true;
5634 }
5635
5636 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5637 int id)
5638 {
5639 void *attr;
5640 int i = 0;
5641
5642 if (!mask)
5643 return true;
5644
5645 attr = nla_nest_start_noflag(msg, id);
5646 if (!attr)
5647 return false;
5648
5649 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5650 if (!(mask & BIT(i)))
5651 continue;
5652
5653 if (nla_put_u8(msg, i, signal[i]))
5654 return false;
5655 }
5656
5657 nla_nest_end(msg, attr);
5658
5659 return true;
5660 }
5661
5662 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5663 u32 seq, int flags,
5664 struct cfg80211_registered_device *rdev,
5665 struct net_device *dev,
5666 const u8 *mac_addr, struct station_info *sinfo)
5667 {
5668 void *hdr;
5669 struct nlattr *sinfoattr, *bss_param;
5670
5671 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5672 if (!hdr) {
5673 cfg80211_sinfo_release_content(sinfo);
5674 return -1;
5675 }
5676
5677 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5678 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5679 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5680 goto nla_put_failure;
5681
5682 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5683 if (!sinfoattr)
5684 goto nla_put_failure;
5685
5686 #define PUT_SINFO(attr, memb, type) do { \
5687 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5688 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5689 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5690 sinfo->memb)) \
5691 goto nla_put_failure; \
5692 } while (0)
5693 #define PUT_SINFO_U64(attr, memb) do { \
5694 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5695 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5696 sinfo->memb, NL80211_STA_INFO_PAD)) \
5697 goto nla_put_failure; \
5698 } while (0)
5699
5700 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5701 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5702 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5703
5704 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5705 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5706 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5707 (u32)sinfo->rx_bytes))
5708 goto nla_put_failure;
5709
5710 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5711 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5712 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5713 (u32)sinfo->tx_bytes))
5714 goto nla_put_failure;
5715
5716 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5717 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5718 PUT_SINFO(LLID, llid, u16);
5719 PUT_SINFO(PLID, plid, u16);
5720 PUT_SINFO(PLINK_STATE, plink_state, u8);
5721 PUT_SINFO_U64(RX_DURATION, rx_duration);
5722 PUT_SINFO_U64(TX_DURATION, tx_duration);
5723
5724 if (wiphy_ext_feature_isset(&rdev->wiphy,
5725 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5726 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5727
5728 switch (rdev->wiphy.signal_type) {
5729 case CFG80211_SIGNAL_TYPE_MBM:
5730 PUT_SINFO(SIGNAL, signal, u8);
5731 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5732 break;
5733 default:
5734 break;
5735 }
5736 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5737 if (!nl80211_put_signal(msg, sinfo->chains,
5738 sinfo->chain_signal,
5739 NL80211_STA_INFO_CHAIN_SIGNAL))
5740 goto nla_put_failure;
5741 }
5742 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5743 if (!nl80211_put_signal(msg, sinfo->chains,
5744 sinfo->chain_signal_avg,
5745 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5746 goto nla_put_failure;
5747 }
5748 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5749 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5750 NL80211_STA_INFO_TX_BITRATE))
5751 goto nla_put_failure;
5752 }
5753 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5754 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5755 NL80211_STA_INFO_RX_BITRATE))
5756 goto nla_put_failure;
5757 }
5758
5759 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5760 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5761 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5762 PUT_SINFO(TX_FAILED, tx_failed, u32);
5763 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5764 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5765 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5766 PUT_SINFO(LOCAL_PM, local_pm, u32);
5767 PUT_SINFO(PEER_PM, peer_pm, u32);
5768 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5769 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5770 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5771
5772 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5773 bss_param = nla_nest_start_noflag(msg,
5774 NL80211_STA_INFO_BSS_PARAM);
5775 if (!bss_param)
5776 goto nla_put_failure;
5777
5778 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5779 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5780 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5781 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5782 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5783 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5784 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5785 sinfo->bss_param.dtim_period) ||
5786 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5787 sinfo->bss_param.beacon_interval))
5788 goto nla_put_failure;
5789
5790 nla_nest_end(msg, bss_param);
5791 }
5792 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5793 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5794 sizeof(struct nl80211_sta_flag_update),
5795 &sinfo->sta_flags))
5796 goto nla_put_failure;
5797
5798 PUT_SINFO_U64(T_OFFSET, t_offset);
5799 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5800 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5801 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5802 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5803 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5804 if (wiphy_ext_feature_isset(&rdev->wiphy,
5805 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5806 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5807 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5808 }
5809
5810 #undef PUT_SINFO
5811 #undef PUT_SINFO_U64
5812
5813 if (sinfo->pertid) {
5814 struct nlattr *tidsattr;
5815 int tid;
5816
5817 tidsattr = nla_nest_start_noflag(msg,
5818 NL80211_STA_INFO_TID_STATS);
5819 if (!tidsattr)
5820 goto nla_put_failure;
5821
5822 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5823 struct cfg80211_tid_stats *tidstats;
5824 struct nlattr *tidattr;
5825
5826 tidstats = &sinfo->pertid[tid];
5827
5828 if (!tidstats->filled)
5829 continue;
5830
5831 tidattr = nla_nest_start_noflag(msg, tid + 1);
5832 if (!tidattr)
5833 goto nla_put_failure;
5834
5835 #define PUT_TIDVAL_U64(attr, memb) do { \
5836 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5837 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5838 tidstats->memb, NL80211_TID_STATS_PAD)) \
5839 goto nla_put_failure; \
5840 } while (0)
5841
5842 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5843 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5844 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5845 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5846
5847 #undef PUT_TIDVAL_U64
5848 if ((tidstats->filled &
5849 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5850 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5851 NL80211_TID_STATS_TXQ_STATS))
5852 goto nla_put_failure;
5853
5854 nla_nest_end(msg, tidattr);
5855 }
5856
5857 nla_nest_end(msg, tidsattr);
5858 }
5859
5860 nla_nest_end(msg, sinfoattr);
5861
5862 if (sinfo->assoc_req_ies_len &&
5863 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5864 sinfo->assoc_req_ies))
5865 goto nla_put_failure;
5866
5867 cfg80211_sinfo_release_content(sinfo);
5868 genlmsg_end(msg, hdr);
5869 return 0;
5870
5871 nla_put_failure:
5872 cfg80211_sinfo_release_content(sinfo);
5873 genlmsg_cancel(msg, hdr);
5874 return -EMSGSIZE;
5875 }
5876
5877 static int nl80211_dump_station(struct sk_buff *skb,
5878 struct netlink_callback *cb)
5879 {
5880 struct station_info sinfo;
5881 struct cfg80211_registered_device *rdev;
5882 struct wireless_dev *wdev;
5883 u8 mac_addr[ETH_ALEN];
5884 int sta_idx = cb->args[2];
5885 int err;
5886
5887 rtnl_lock();
5888 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5889 if (err)
5890 goto out_err;
5891
5892 if (!wdev->netdev) {
5893 err = -EINVAL;
5894 goto out_err;
5895 }
5896
5897 if (!rdev->ops->dump_station) {
5898 err = -EOPNOTSUPP;
5899 goto out_err;
5900 }
5901
5902 while (1) {
5903 memset(&sinfo, 0, sizeof(sinfo));
5904 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5905 mac_addr, &sinfo);
5906 if (err == -ENOENT)
5907 break;
5908 if (err)
5909 goto out_err;
5910
5911 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5912 NETLINK_CB(cb->skb).portid,
5913 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5914 rdev, wdev->netdev, mac_addr,
5915 &sinfo) < 0)
5916 goto out;
5917
5918 sta_idx++;
5919 }
5920
5921 out:
5922 cb->args[2] = sta_idx;
5923 err = skb->len;
5924 out_err:
5925 rtnl_unlock();
5926
5927 return err;
5928 }
5929
5930 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5931 {
5932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5933 struct net_device *dev = info->user_ptr[1];
5934 struct station_info sinfo;
5935 struct sk_buff *msg;
5936 u8 *mac_addr = NULL;
5937 int err;
5938
5939 memset(&sinfo, 0, sizeof(sinfo));
5940
5941 if (!info->attrs[NL80211_ATTR_MAC])
5942 return -EINVAL;
5943
5944 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5945
5946 if (!rdev->ops->get_station)
5947 return -EOPNOTSUPP;
5948
5949 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5950 if (err)
5951 return err;
5952
5953 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5954 if (!msg) {
5955 cfg80211_sinfo_release_content(&sinfo);
5956 return -ENOMEM;
5957 }
5958
5959 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5960 info->snd_portid, info->snd_seq, 0,
5961 rdev, dev, mac_addr, &sinfo) < 0) {
5962 nlmsg_free(msg);
5963 return -ENOBUFS;
5964 }
5965
5966 return genlmsg_reply(msg, info);
5967 }
5968
5969 int cfg80211_check_station_change(struct wiphy *wiphy,
5970 struct station_parameters *params,
5971 enum cfg80211_station_type statype)
5972 {
5973 if (params->listen_interval != -1 &&
5974 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5975 return -EINVAL;
5976
5977 if (params->support_p2p_ps != -1 &&
5978 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5979 return -EINVAL;
5980
5981 if (params->aid &&
5982 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5983 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5984 return -EINVAL;
5985
5986 /* When you run into this, adjust the code below for the new flag */
5987 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5988
5989 switch (statype) {
5990 case CFG80211_STA_MESH_PEER_KERNEL:
5991 case CFG80211_STA_MESH_PEER_USER:
5992 /*
5993 * No ignoring the TDLS flag here -- the userspace mesh
5994 * code doesn't have the bug of including TDLS in the
5995 * mask everywhere.
5996 */
5997 if (params->sta_flags_mask &
5998 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5999 BIT(NL80211_STA_FLAG_MFP) |
6000 BIT(NL80211_STA_FLAG_AUTHORIZED)))
6001 return -EINVAL;
6002 break;
6003 case CFG80211_STA_TDLS_PEER_SETUP:
6004 case CFG80211_STA_TDLS_PEER_ACTIVE:
6005 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6006 return -EINVAL;
6007 /* ignore since it can't change */
6008 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6009 break;
6010 default:
6011 /* disallow mesh-specific things */
6012 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6013 return -EINVAL;
6014 if (params->local_pm)
6015 return -EINVAL;
6016 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6017 return -EINVAL;
6018 }
6019
6020 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6021 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6022 /* TDLS can't be set, ... */
6023 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6024 return -EINVAL;
6025 /*
6026 * ... but don't bother the driver with it. This works around
6027 * a hostapd/wpa_supplicant issue -- it always includes the
6028 * TLDS_PEER flag in the mask even for AP mode.
6029 */
6030 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6031 }
6032
6033 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6034 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6035 /* reject other things that can't change */
6036 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6037 return -EINVAL;
6038 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6039 return -EINVAL;
6040 if (params->supported_rates)
6041 return -EINVAL;
6042 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6043 params->he_capa)
6044 return -EINVAL;
6045 }
6046
6047 if (statype != CFG80211_STA_AP_CLIENT &&
6048 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6049 if (params->vlan)
6050 return -EINVAL;
6051 }
6052
6053 switch (statype) {
6054 case CFG80211_STA_AP_MLME_CLIENT:
6055 /* Use this only for authorizing/unauthorizing a station */
6056 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6057 return -EOPNOTSUPP;
6058 break;
6059 case CFG80211_STA_AP_CLIENT:
6060 case CFG80211_STA_AP_CLIENT_UNASSOC:
6061 /* accept only the listed bits */
6062 if (params->sta_flags_mask &
6063 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6064 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6065 BIT(NL80211_STA_FLAG_ASSOCIATED) |
6066 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6067 BIT(NL80211_STA_FLAG_WME) |
6068 BIT(NL80211_STA_FLAG_MFP)))
6069 return -EINVAL;
6070
6071 /* but authenticated/associated only if driver handles it */
6072 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6073 params->sta_flags_mask &
6074 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6075 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6076 return -EINVAL;
6077 break;
6078 case CFG80211_STA_IBSS:
6079 case CFG80211_STA_AP_STA:
6080 /* reject any changes other than AUTHORIZED */
6081 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6082 return -EINVAL;
6083 break;
6084 case CFG80211_STA_TDLS_PEER_SETUP:
6085 /* reject any changes other than AUTHORIZED or WME */
6086 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6087 BIT(NL80211_STA_FLAG_WME)))
6088 return -EINVAL;
6089 /* force (at least) rates when authorizing */
6090 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6091 !params->supported_rates)
6092 return -EINVAL;
6093 break;
6094 case CFG80211_STA_TDLS_PEER_ACTIVE:
6095 /* reject any changes */
6096 return -EINVAL;
6097 case CFG80211_STA_MESH_PEER_KERNEL:
6098 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6099 return -EINVAL;
6100 break;
6101 case CFG80211_STA_MESH_PEER_USER:
6102 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6103 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6104 return -EINVAL;
6105 break;
6106 }
6107
6108 /*
6109 * Older kernel versions ignored this attribute entirely, so don't
6110 * reject attempts to update it but mark it as unused instead so the
6111 * driver won't look at the data.
6112 */
6113 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6114 statype != CFG80211_STA_TDLS_PEER_SETUP)
6115 params->opmode_notif_used = false;
6116
6117 return 0;
6118 }
6119 EXPORT_SYMBOL(cfg80211_check_station_change);
6120
6121 /*
6122 * Get vlan interface making sure it is running and on the right wiphy.
6123 */
6124 static struct net_device *get_vlan(struct genl_info *info,
6125 struct cfg80211_registered_device *rdev)
6126 {
6127 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6128 struct net_device *v;
6129 int ret;
6130
6131 if (!vlanattr)
6132 return NULL;
6133
6134 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6135 if (!v)
6136 return ERR_PTR(-ENODEV);
6137
6138 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6139 ret = -EINVAL;
6140 goto error;
6141 }
6142
6143 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6144 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6145 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6146 ret = -EINVAL;
6147 goto error;
6148 }
6149
6150 if (!netif_running(v)) {
6151 ret = -ENETDOWN;
6152 goto error;
6153 }
6154
6155 return v;
6156 error:
6157 dev_put(v);
6158 return ERR_PTR(ret);
6159 }
6160
6161 static const struct nla_policy
6162 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6163 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6164 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6165 };
6166
6167 static int nl80211_parse_sta_wme(struct genl_info *info,
6168 struct station_parameters *params)
6169 {
6170 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6171 struct nlattr *nla;
6172 int err;
6173
6174 /* parse WME attributes if present */
6175 if (!info->attrs[NL80211_ATTR_STA_WME])
6176 return 0;
6177
6178 nla = info->attrs[NL80211_ATTR_STA_WME];
6179 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6180 nl80211_sta_wme_policy,
6181 info->extack);
6182 if (err)
6183 return err;
6184
6185 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6186 params->uapsd_queues = nla_get_u8(
6187 tb[NL80211_STA_WME_UAPSD_QUEUES]);
6188 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6189 return -EINVAL;
6190
6191 if (tb[NL80211_STA_WME_MAX_SP])
6192 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6193
6194 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6195 return -EINVAL;
6196
6197 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6198
6199 return 0;
6200 }
6201
6202 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6203 struct station_parameters *params)
6204 {
6205 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6206 params->supported_channels =
6207 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6208 params->supported_channels_len =
6209 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6210 /*
6211 * Need to include at least one (first channel, number of
6212 * channels) tuple for each subband (checked in policy),
6213 * and must have proper tuples for the rest of the data as well.
6214 */
6215 if (params->supported_channels_len % 2)
6216 return -EINVAL;
6217 }
6218
6219 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6220 params->supported_oper_classes =
6221 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6222 params->supported_oper_classes_len =
6223 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6224 }
6225 return 0;
6226 }
6227
6228 static int nl80211_set_station_tdls(struct genl_info *info,
6229 struct station_parameters *params)
6230 {
6231 int err;
6232 /* Dummy STA entry gets updated once the peer capabilities are known */
6233 if (info->attrs[NL80211_ATTR_PEER_AID])
6234 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6235 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6236 params->ht_capa =
6237 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6238 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6239 params->vht_capa =
6240 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6241 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6242 params->he_capa =
6243 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6244 params->he_capa_len =
6245 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6246 }
6247
6248 err = nl80211_parse_sta_channel_info(info, params);
6249 if (err)
6250 return err;
6251
6252 return nl80211_parse_sta_wme(info, params);
6253 }
6254
6255 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6256 struct station_parameters *params)
6257 {
6258 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6259 int idx;
6260
6261 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6262 if (!rdev->ops->set_tx_power ||
6263 !wiphy_ext_feature_isset(&rdev->wiphy,
6264 NL80211_EXT_FEATURE_STA_TX_PWR))
6265 return -EOPNOTSUPP;
6266
6267 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6268 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6269
6270 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6271 idx = NL80211_ATTR_STA_TX_POWER;
6272
6273 if (info->attrs[idx])
6274 params->txpwr.power =
6275 nla_get_s16(info->attrs[idx]);
6276 else
6277 return -EINVAL;
6278 }
6279 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6280 }
6281
6282 return 0;
6283 }
6284
6285 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6286 {
6287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6288 struct net_device *dev = info->user_ptr[1];
6289 struct station_parameters params;
6290 u8 *mac_addr;
6291 int err;
6292
6293 memset(&params, 0, sizeof(params));
6294
6295 if (!rdev->ops->change_station)
6296 return -EOPNOTSUPP;
6297
6298 /*
6299 * AID and listen_interval properties can be set only for unassociated
6300 * station. Include these parameters here and will check them in
6301 * cfg80211_check_station_change().
6302 */
6303 if (info->attrs[NL80211_ATTR_STA_AID])
6304 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6305
6306 if (info->attrs[NL80211_ATTR_VLAN_ID])
6307 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6308
6309 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6310 params.listen_interval =
6311 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6312 else
6313 params.listen_interval = -1;
6314
6315 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6316 params.support_p2p_ps =
6317 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6318 else
6319 params.support_p2p_ps = -1;
6320
6321 if (!info->attrs[NL80211_ATTR_MAC])
6322 return -EINVAL;
6323
6324 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6325
6326 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6327 params.supported_rates =
6328 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6329 params.supported_rates_len =
6330 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6331 }
6332
6333 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6334 params.capability =
6335 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6336 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6337 }
6338
6339 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6340 params.ext_capab =
6341 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6342 params.ext_capab_len =
6343 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6344 }
6345
6346 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6347 return -EINVAL;
6348
6349 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6350 params.plink_action =
6351 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6352
6353 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6354 params.plink_state =
6355 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6356 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6357 params.peer_aid = nla_get_u16(
6358 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6359 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6360 }
6361
6362 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6363 params.local_pm = nla_get_u32(
6364 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6365
6366 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6367 params.opmode_notif_used = true;
6368 params.opmode_notif =
6369 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6370 }
6371
6372 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6373 params.he_6ghz_capa =
6374 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6375
6376 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6377 params.airtime_weight =
6378 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6379
6380 if (params.airtime_weight &&
6381 !wiphy_ext_feature_isset(&rdev->wiphy,
6382 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6383 return -EOPNOTSUPP;
6384
6385 err = nl80211_parse_sta_txpower_setting(info, &params);
6386 if (err)
6387 return err;
6388
6389 /* Include parameters for TDLS peer (will check later) */
6390 err = nl80211_set_station_tdls(info, &params);
6391 if (err)
6392 return err;
6393
6394 params.vlan = get_vlan(info, rdev);
6395 if (IS_ERR(params.vlan))
6396 return PTR_ERR(params.vlan);
6397
6398 switch (dev->ieee80211_ptr->iftype) {
6399 case NL80211_IFTYPE_AP:
6400 case NL80211_IFTYPE_AP_VLAN:
6401 case NL80211_IFTYPE_P2P_GO:
6402 case NL80211_IFTYPE_P2P_CLIENT:
6403 case NL80211_IFTYPE_STATION:
6404 case NL80211_IFTYPE_ADHOC:
6405 case NL80211_IFTYPE_MESH_POINT:
6406 break;
6407 default:
6408 err = -EOPNOTSUPP;
6409 goto out_put_vlan;
6410 }
6411
6412 /* driver will call cfg80211_check_station_change() */
6413 err = rdev_change_station(rdev, dev, mac_addr, &params);
6414
6415 out_put_vlan:
6416 if (params.vlan)
6417 dev_put(params.vlan);
6418
6419 return err;
6420 }
6421
6422 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6423 {
6424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6425 int err;
6426 struct net_device *dev = info->user_ptr[1];
6427 struct station_parameters params;
6428 u8 *mac_addr = NULL;
6429 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6430 BIT(NL80211_STA_FLAG_ASSOCIATED);
6431
6432 memset(&params, 0, sizeof(params));
6433
6434 if (!rdev->ops->add_station)
6435 return -EOPNOTSUPP;
6436
6437 if (!info->attrs[NL80211_ATTR_MAC])
6438 return -EINVAL;
6439
6440 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6441 return -EINVAL;
6442
6443 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6444 return -EINVAL;
6445
6446 if (!info->attrs[NL80211_ATTR_STA_AID] &&
6447 !info->attrs[NL80211_ATTR_PEER_AID])
6448 return -EINVAL;
6449
6450 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6451 params.supported_rates =
6452 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6453 params.supported_rates_len =
6454 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6455 params.listen_interval =
6456 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6457
6458 if (info->attrs[NL80211_ATTR_VLAN_ID])
6459 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6460
6461 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6462 params.support_p2p_ps =
6463 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6464 } else {
6465 /*
6466 * if not specified, assume it's supported for P2P GO interface,
6467 * and is NOT supported for AP interface
6468 */
6469 params.support_p2p_ps =
6470 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6471 }
6472
6473 if (info->attrs[NL80211_ATTR_PEER_AID])
6474 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6475 else
6476 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6477
6478 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6479 params.capability =
6480 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6481 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6482 }
6483
6484 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6485 params.ext_capab =
6486 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6487 params.ext_capab_len =
6488 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6489 }
6490
6491 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6492 params.ht_capa =
6493 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6494
6495 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6496 params.vht_capa =
6497 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6498
6499 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6500 params.he_capa =
6501 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6502 params.he_capa_len =
6503 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6504 }
6505
6506 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6507 params.he_6ghz_capa =
6508 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6509
6510 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6511 params.opmode_notif_used = true;
6512 params.opmode_notif =
6513 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6514 }
6515
6516 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6517 params.plink_action =
6518 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6519
6520 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6521 params.airtime_weight =
6522 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6523
6524 if (params.airtime_weight &&
6525 !wiphy_ext_feature_isset(&rdev->wiphy,
6526 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6527 return -EOPNOTSUPP;
6528
6529 err = nl80211_parse_sta_txpower_setting(info, &params);
6530 if (err)
6531 return err;
6532
6533 err = nl80211_parse_sta_channel_info(info, &params);
6534 if (err)
6535 return err;
6536
6537 err = nl80211_parse_sta_wme(info, &params);
6538 if (err)
6539 return err;
6540
6541 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6542 return -EINVAL;
6543
6544 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6545 * as userspace might just pass through the capabilities from the IEs
6546 * directly, rather than enforcing this restriction and returning an
6547 * error in this case.
6548 */
6549 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6550 params.ht_capa = NULL;
6551 params.vht_capa = NULL;
6552
6553 /* HE requires WME */
6554 if (params.he_capa_len || params.he_6ghz_capa)
6555 return -EINVAL;
6556 }
6557
6558 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6559 if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6560 return -EINVAL;
6561
6562 /* When you run into this, adjust the code below for the new flag */
6563 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6564
6565 switch (dev->ieee80211_ptr->iftype) {
6566 case NL80211_IFTYPE_AP:
6567 case NL80211_IFTYPE_AP_VLAN:
6568 case NL80211_IFTYPE_P2P_GO:
6569 /* ignore WME attributes if iface/sta is not capable */
6570 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6571 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6572 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6573
6574 /* TDLS peers cannot be added */
6575 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6576 info->attrs[NL80211_ATTR_PEER_AID])
6577 return -EINVAL;
6578 /* but don't bother the driver with it */
6579 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6580
6581 /* allow authenticated/associated only if driver handles it */
6582 if (!(rdev->wiphy.features &
6583 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6584 params.sta_flags_mask & auth_assoc)
6585 return -EINVAL;
6586
6587 /* Older userspace, or userspace wanting to be compatible with
6588 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6589 * and assoc flags in the mask, but assumes the station will be
6590 * added as associated anyway since this was the required driver
6591 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6592 * introduced.
6593 * In order to not bother drivers with this quirk in the API
6594 * set the flags in both the mask and set for new stations in
6595 * this case.
6596 */
6597 if (!(params.sta_flags_mask & auth_assoc)) {
6598 params.sta_flags_mask |= auth_assoc;
6599 params.sta_flags_set |= auth_assoc;
6600 }
6601
6602 /* must be last in here for error handling */
6603 params.vlan = get_vlan(info, rdev);
6604 if (IS_ERR(params.vlan))
6605 return PTR_ERR(params.vlan);
6606 break;
6607 case NL80211_IFTYPE_MESH_POINT:
6608 /* ignore uAPSD data */
6609 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6610
6611 /* associated is disallowed */
6612 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6613 return -EINVAL;
6614 /* TDLS peers cannot be added */
6615 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6616 info->attrs[NL80211_ATTR_PEER_AID])
6617 return -EINVAL;
6618 break;
6619 case NL80211_IFTYPE_STATION:
6620 case NL80211_IFTYPE_P2P_CLIENT:
6621 /* ignore uAPSD data */
6622 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6623
6624 /* these are disallowed */
6625 if (params.sta_flags_mask &
6626 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6627 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6628 return -EINVAL;
6629 /* Only TDLS peers can be added */
6630 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6631 return -EINVAL;
6632 /* Can only add if TDLS ... */
6633 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6634 return -EOPNOTSUPP;
6635 /* ... with external setup is supported */
6636 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6637 return -EOPNOTSUPP;
6638 /*
6639 * Older wpa_supplicant versions always mark the TDLS peer
6640 * as authorized, but it shouldn't yet be.
6641 */
6642 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6643 break;
6644 default:
6645 return -EOPNOTSUPP;
6646 }
6647
6648 /* be aware of params.vlan when changing code here */
6649
6650 err = rdev_add_station(rdev, dev, mac_addr, &params);
6651
6652 if (params.vlan)
6653 dev_put(params.vlan);
6654 return err;
6655 }
6656
6657 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6658 {
6659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6660 struct net_device *dev = info->user_ptr[1];
6661 struct station_del_parameters params;
6662
6663 memset(&params, 0, sizeof(params));
6664
6665 if (info->attrs[NL80211_ATTR_MAC])
6666 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6667
6668 switch (dev->ieee80211_ptr->iftype) {
6669 case NL80211_IFTYPE_AP:
6670 case NL80211_IFTYPE_AP_VLAN:
6671 case NL80211_IFTYPE_MESH_POINT:
6672 case NL80211_IFTYPE_P2P_GO:
6673 /* always accept these */
6674 break;
6675 case NL80211_IFTYPE_ADHOC:
6676 /* conditionally accept */
6677 if (wiphy_ext_feature_isset(&rdev->wiphy,
6678 NL80211_EXT_FEATURE_DEL_IBSS_STA))
6679 break;
6680 return -EINVAL;
6681 default:
6682 return -EINVAL;
6683 }
6684
6685 if (!rdev->ops->del_station)
6686 return -EOPNOTSUPP;
6687
6688 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6689 params.subtype =
6690 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6691 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6692 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6693 return -EINVAL;
6694 } else {
6695 /* Default to Deauthentication frame */
6696 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6697 }
6698
6699 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6700 params.reason_code =
6701 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6702 if (params.reason_code == 0)
6703 return -EINVAL; /* 0 is reserved */
6704 } else {
6705 /* Default to reason code 2 */
6706 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6707 }
6708
6709 return rdev_del_station(rdev, dev, &params);
6710 }
6711
6712 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6713 int flags, struct net_device *dev,
6714 u8 *dst, u8 *next_hop,
6715 struct mpath_info *pinfo)
6716 {
6717 void *hdr;
6718 struct nlattr *pinfoattr;
6719
6720 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6721 if (!hdr)
6722 return -1;
6723
6724 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6725 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6726 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6727 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6728 goto nla_put_failure;
6729
6730 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6731 if (!pinfoattr)
6732 goto nla_put_failure;
6733 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6734 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6735 pinfo->frame_qlen))
6736 goto nla_put_failure;
6737 if (((pinfo->filled & MPATH_INFO_SN) &&
6738 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6739 ((pinfo->filled & MPATH_INFO_METRIC) &&
6740 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6741 pinfo->metric)) ||
6742 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6743 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6744 pinfo->exptime)) ||
6745 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6746 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6747 pinfo->flags)) ||
6748 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6749 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6750 pinfo->discovery_timeout)) ||
6751 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6752 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6753 pinfo->discovery_retries)) ||
6754 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6755 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6756 pinfo->hop_count)) ||
6757 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6758 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6759 pinfo->path_change_count)))
6760 goto nla_put_failure;
6761
6762 nla_nest_end(msg, pinfoattr);
6763
6764 genlmsg_end(msg, hdr);
6765 return 0;
6766
6767 nla_put_failure:
6768 genlmsg_cancel(msg, hdr);
6769 return -EMSGSIZE;
6770 }
6771
6772 static int nl80211_dump_mpath(struct sk_buff *skb,
6773 struct netlink_callback *cb)
6774 {
6775 struct mpath_info pinfo;
6776 struct cfg80211_registered_device *rdev;
6777 struct wireless_dev *wdev;
6778 u8 dst[ETH_ALEN];
6779 u8 next_hop[ETH_ALEN];
6780 int path_idx = cb->args[2];
6781 int err;
6782
6783 rtnl_lock();
6784 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6785 if (err)
6786 goto out_err;
6787
6788 if (!rdev->ops->dump_mpath) {
6789 err = -EOPNOTSUPP;
6790 goto out_err;
6791 }
6792
6793 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6794 err = -EOPNOTSUPP;
6795 goto out_err;
6796 }
6797
6798 while (1) {
6799 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6800 next_hop, &pinfo);
6801 if (err == -ENOENT)
6802 break;
6803 if (err)
6804 goto out_err;
6805
6806 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6807 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6808 wdev->netdev, dst, next_hop,
6809 &pinfo) < 0)
6810 goto out;
6811
6812 path_idx++;
6813 }
6814
6815 out:
6816 cb->args[2] = path_idx;
6817 err = skb->len;
6818 out_err:
6819 rtnl_unlock();
6820 return err;
6821 }
6822
6823 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6824 {
6825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6826 int err;
6827 struct net_device *dev = info->user_ptr[1];
6828 struct mpath_info pinfo;
6829 struct sk_buff *msg;
6830 u8 *dst = NULL;
6831 u8 next_hop[ETH_ALEN];
6832
6833 memset(&pinfo, 0, sizeof(pinfo));
6834
6835 if (!info->attrs[NL80211_ATTR_MAC])
6836 return -EINVAL;
6837
6838 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6839
6840 if (!rdev->ops->get_mpath)
6841 return -EOPNOTSUPP;
6842
6843 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6844 return -EOPNOTSUPP;
6845
6846 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6847 if (err)
6848 return err;
6849
6850 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6851 if (!msg)
6852 return -ENOMEM;
6853
6854 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6855 dev, dst, next_hop, &pinfo) < 0) {
6856 nlmsg_free(msg);
6857 return -ENOBUFS;
6858 }
6859
6860 return genlmsg_reply(msg, info);
6861 }
6862
6863 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6864 {
6865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6866 struct net_device *dev = info->user_ptr[1];
6867 u8 *dst = NULL;
6868 u8 *next_hop = NULL;
6869
6870 if (!info->attrs[NL80211_ATTR_MAC])
6871 return -EINVAL;
6872
6873 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6874 return -EINVAL;
6875
6876 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6877 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6878
6879 if (!rdev->ops->change_mpath)
6880 return -EOPNOTSUPP;
6881
6882 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6883 return -EOPNOTSUPP;
6884
6885 return rdev_change_mpath(rdev, dev, dst, next_hop);
6886 }
6887
6888 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6889 {
6890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6891 struct net_device *dev = info->user_ptr[1];
6892 u8 *dst = NULL;
6893 u8 *next_hop = NULL;
6894
6895 if (!info->attrs[NL80211_ATTR_MAC])
6896 return -EINVAL;
6897
6898 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6899 return -EINVAL;
6900
6901 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6902 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6903
6904 if (!rdev->ops->add_mpath)
6905 return -EOPNOTSUPP;
6906
6907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6908 return -EOPNOTSUPP;
6909
6910 return rdev_add_mpath(rdev, dev, dst, next_hop);
6911 }
6912
6913 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6914 {
6915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6916 struct net_device *dev = info->user_ptr[1];
6917 u8 *dst = NULL;
6918
6919 if (info->attrs[NL80211_ATTR_MAC])
6920 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6921
6922 if (!rdev->ops->del_mpath)
6923 return -EOPNOTSUPP;
6924
6925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6926 return -EOPNOTSUPP;
6927
6928 return rdev_del_mpath(rdev, dev, dst);
6929 }
6930
6931 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6932 {
6933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6934 int err;
6935 struct net_device *dev = info->user_ptr[1];
6936 struct mpath_info pinfo;
6937 struct sk_buff *msg;
6938 u8 *dst = NULL;
6939 u8 mpp[ETH_ALEN];
6940
6941 memset(&pinfo, 0, sizeof(pinfo));
6942
6943 if (!info->attrs[NL80211_ATTR_MAC])
6944 return -EINVAL;
6945
6946 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6947
6948 if (!rdev->ops->get_mpp)
6949 return -EOPNOTSUPP;
6950
6951 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6952 return -EOPNOTSUPP;
6953
6954 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6955 if (err)
6956 return err;
6957
6958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6959 if (!msg)
6960 return -ENOMEM;
6961
6962 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6963 dev, dst, mpp, &pinfo) < 0) {
6964 nlmsg_free(msg);
6965 return -ENOBUFS;
6966 }
6967
6968 return genlmsg_reply(msg, info);
6969 }
6970
6971 static int nl80211_dump_mpp(struct sk_buff *skb,
6972 struct netlink_callback *cb)
6973 {
6974 struct mpath_info pinfo;
6975 struct cfg80211_registered_device *rdev;
6976 struct wireless_dev *wdev;
6977 u8 dst[ETH_ALEN];
6978 u8 mpp[ETH_ALEN];
6979 int path_idx = cb->args[2];
6980 int err;
6981
6982 rtnl_lock();
6983 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6984 if (err)
6985 goto out_err;
6986
6987 if (!rdev->ops->dump_mpp) {
6988 err = -EOPNOTSUPP;
6989 goto out_err;
6990 }
6991
6992 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6993 err = -EOPNOTSUPP;
6994 goto out_err;
6995 }
6996
6997 while (1) {
6998 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6999 mpp, &pinfo);
7000 if (err == -ENOENT)
7001 break;
7002 if (err)
7003 goto out_err;
7004
7005 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7006 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7007 wdev->netdev, dst, mpp,
7008 &pinfo) < 0)
7009 goto out;
7010
7011 path_idx++;
7012 }
7013
7014 out:
7015 cb->args[2] = path_idx;
7016 err = skb->len;
7017 out_err:
7018 rtnl_unlock();
7019 return err;
7020 }
7021
7022 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7023 {
7024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7025 struct net_device *dev = info->user_ptr[1];
7026 struct wireless_dev *wdev = dev->ieee80211_ptr;
7027 struct bss_parameters params;
7028 int err;
7029
7030 memset(&params, 0, sizeof(params));
7031 /* default to not changing parameters */
7032 params.use_cts_prot = -1;
7033 params.use_short_preamble = -1;
7034 params.use_short_slot_time = -1;
7035 params.ap_isolate = -1;
7036 params.ht_opmode = -1;
7037 params.p2p_ctwindow = -1;
7038 params.p2p_opp_ps = -1;
7039
7040 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7041 params.use_cts_prot =
7042 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7043 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7044 params.use_short_preamble =
7045 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7046 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7047 params.use_short_slot_time =
7048 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7049 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7050 params.basic_rates =
7051 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7052 params.basic_rates_len =
7053 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7054 }
7055 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7056 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7057 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7058 params.ht_opmode =
7059 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7060
7061 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7062 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7063 return -EINVAL;
7064 params.p2p_ctwindow =
7065 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7066 if (params.p2p_ctwindow != 0 &&
7067 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7068 return -EINVAL;
7069 }
7070
7071 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7072 u8 tmp;
7073
7074 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7075 return -EINVAL;
7076 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7077 params.p2p_opp_ps = tmp;
7078 if (params.p2p_opp_ps &&
7079 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7080 return -EINVAL;
7081 }
7082
7083 if (!rdev->ops->change_bss)
7084 return -EOPNOTSUPP;
7085
7086 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7087 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7088 return -EOPNOTSUPP;
7089
7090 wdev_lock(wdev);
7091 err = rdev_change_bss(rdev, dev, &params);
7092 wdev_unlock(wdev);
7093
7094 return err;
7095 }
7096
7097 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7098 {
7099 char *data = NULL;
7100 bool is_indoor;
7101 enum nl80211_user_reg_hint_type user_reg_hint_type;
7102 u32 owner_nlportid;
7103
7104 /*
7105 * You should only get this when cfg80211 hasn't yet initialized
7106 * completely when built-in to the kernel right between the time
7107 * window between nl80211_init() and regulatory_init(), if that is
7108 * even possible.
7109 */
7110 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7111 return -EINPROGRESS;
7112
7113 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7114 user_reg_hint_type =
7115 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7116 else
7117 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7118
7119 switch (user_reg_hint_type) {
7120 case NL80211_USER_REG_HINT_USER:
7121 case NL80211_USER_REG_HINT_CELL_BASE:
7122 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7123 return -EINVAL;
7124
7125 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7126 return regulatory_hint_user(data, user_reg_hint_type);
7127 case NL80211_USER_REG_HINT_INDOOR:
7128 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7129 owner_nlportid = info->snd_portid;
7130 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7131 } else {
7132 owner_nlportid = 0;
7133 is_indoor = true;
7134 }
7135
7136 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7137 default:
7138 return -EINVAL;
7139 }
7140 }
7141
7142 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7143 {
7144 return reg_reload_regdb();
7145 }
7146
7147 static int nl80211_get_mesh_config(struct sk_buff *skb,
7148 struct genl_info *info)
7149 {
7150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7151 struct net_device *dev = info->user_ptr[1];
7152 struct wireless_dev *wdev = dev->ieee80211_ptr;
7153 struct mesh_config cur_params;
7154 int err = 0;
7155 void *hdr;
7156 struct nlattr *pinfoattr;
7157 struct sk_buff *msg;
7158
7159 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7160 return -EOPNOTSUPP;
7161
7162 if (!rdev->ops->get_mesh_config)
7163 return -EOPNOTSUPP;
7164
7165 wdev_lock(wdev);
7166 /* If not connected, get default parameters */
7167 if (!wdev->mesh_id_len)
7168 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7169 else
7170 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7171 wdev_unlock(wdev);
7172
7173 if (err)
7174 return err;
7175
7176 /* Draw up a netlink message to send back */
7177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7178 if (!msg)
7179 return -ENOMEM;
7180 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7181 NL80211_CMD_GET_MESH_CONFIG);
7182 if (!hdr)
7183 goto out;
7184 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7185 if (!pinfoattr)
7186 goto nla_put_failure;
7187 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7188 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7189 cur_params.dot11MeshRetryTimeout) ||
7190 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7191 cur_params.dot11MeshConfirmTimeout) ||
7192 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7193 cur_params.dot11MeshHoldingTimeout) ||
7194 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7195 cur_params.dot11MeshMaxPeerLinks) ||
7196 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7197 cur_params.dot11MeshMaxRetries) ||
7198 nla_put_u8(msg, NL80211_MESHCONF_TTL,
7199 cur_params.dot11MeshTTL) ||
7200 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7201 cur_params.element_ttl) ||
7202 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7203 cur_params.auto_open_plinks) ||
7204 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7205 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7206 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7207 cur_params.dot11MeshHWMPmaxPREQretries) ||
7208 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7209 cur_params.path_refresh_time) ||
7210 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7211 cur_params.min_discovery_timeout) ||
7212 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7213 cur_params.dot11MeshHWMPactivePathTimeout) ||
7214 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7215 cur_params.dot11MeshHWMPpreqMinInterval) ||
7216 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7217 cur_params.dot11MeshHWMPperrMinInterval) ||
7218 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7219 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7220 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7221 cur_params.dot11MeshHWMPRootMode) ||
7222 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7223 cur_params.dot11MeshHWMPRannInterval) ||
7224 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7225 cur_params.dot11MeshGateAnnouncementProtocol) ||
7226 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7227 cur_params.dot11MeshForwarding) ||
7228 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7229 cur_params.rssi_threshold) ||
7230 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7231 cur_params.ht_opmode) ||
7232 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7233 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7234 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7235 cur_params.dot11MeshHWMProotInterval) ||
7236 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7237 cur_params.dot11MeshHWMPconfirmationInterval) ||
7238 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7239 cur_params.power_mode) ||
7240 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7241 cur_params.dot11MeshAwakeWindowDuration) ||
7242 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7243 cur_params.plink_timeout) ||
7244 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7245 cur_params.dot11MeshConnectedToMeshGate) ||
7246 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7247 cur_params.dot11MeshNolearn) ||
7248 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7249 cur_params.dot11MeshConnectedToAuthServer))
7250 goto nla_put_failure;
7251 nla_nest_end(msg, pinfoattr);
7252 genlmsg_end(msg, hdr);
7253 return genlmsg_reply(msg, info);
7254
7255 nla_put_failure:
7256 out:
7257 nlmsg_free(msg);
7258 return -ENOBUFS;
7259 }
7260
7261 static const struct nla_policy
7262 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7263 [NL80211_MESHCONF_RETRY_TIMEOUT] =
7264 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7265 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7266 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7267 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7268 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7269 [NL80211_MESHCONF_MAX_PEER_LINKS] =
7270 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7271 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7272 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7273 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7274 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7275 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7276 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7277 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7278 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7279 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7280 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7281 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7282 NLA_POLICY_MIN(NLA_U16, 1),
7283 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7284 NLA_POLICY_MIN(NLA_U16, 1),
7285 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7286 NLA_POLICY_MIN(NLA_U16, 1),
7287 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7288 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7289 NLA_POLICY_MIN(NLA_U16, 1),
7290 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7291 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7292 [NL80211_MESHCONF_RSSI_THRESHOLD] =
7293 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7294 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7295 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7296 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7297 NLA_POLICY_MIN(NLA_U16, 1),
7298 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7299 NLA_POLICY_MIN(NLA_U16, 1),
7300 [NL80211_MESHCONF_POWER_MODE] =
7301 NLA_POLICY_RANGE(NLA_U32,
7302 NL80211_MESH_POWER_ACTIVE,
7303 NL80211_MESH_POWER_MAX),
7304 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7305 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7306 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7307 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7308 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7309 };
7310
7311 static const struct nla_policy
7312 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7313 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7314 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7315 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7316 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7317 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7318 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7319 [NL80211_MESH_SETUP_IE] =
7320 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7321 IEEE80211_MAX_DATA_LEN),
7322 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7323 };
7324
7325 static int nl80211_parse_mesh_config(struct genl_info *info,
7326 struct mesh_config *cfg,
7327 u32 *mask_out)
7328 {
7329 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7330 u32 mask = 0;
7331 u16 ht_opmode;
7332
7333 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
7334 do { \
7335 if (tb[attr]) { \
7336 cfg->param = fn(tb[attr]); \
7337 mask |= BIT((attr) - 1); \
7338 } \
7339 } while (0)
7340
7341 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7342 return -EINVAL;
7343 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7344 return -EINVAL;
7345
7346 /* This makes sure that there aren't more than 32 mesh config
7347 * parameters (otherwise our bitfield scheme would not work.) */
7348 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7349
7350 /* Fill in the params struct */
7351 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7352 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7353 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7354 NL80211_MESHCONF_CONFIRM_TIMEOUT,
7355 nla_get_u16);
7356 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7357 NL80211_MESHCONF_HOLDING_TIMEOUT,
7358 nla_get_u16);
7359 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7360 NL80211_MESHCONF_MAX_PEER_LINKS,
7361 nla_get_u16);
7362 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7363 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7364 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7365 NL80211_MESHCONF_TTL, nla_get_u8);
7366 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7367 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7368 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7369 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7370 nla_get_u8);
7371 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7372 mask,
7373 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7374 nla_get_u32);
7375 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7376 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7377 nla_get_u8);
7378 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7379 NL80211_MESHCONF_PATH_REFRESH_TIME,
7380 nla_get_u32);
7381 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7382 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7383 return -EINVAL;
7384 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7385 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7386 nla_get_u16);
7387 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7388 mask,
7389 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7390 nla_get_u32);
7391 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7392 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7393 cfg->dot11MeshHWMPactivePathTimeout > 65535))
7394 return -EINVAL;
7395 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7396 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7397 nla_get_u16);
7398 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7399 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7400 nla_get_u16);
7401 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7402 dot11MeshHWMPnetDiameterTraversalTime, mask,
7403 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7404 nla_get_u16);
7405 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7406 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7407 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7408 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7409 nla_get_u16);
7410 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7411 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7412 nla_get_u8);
7413 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7414 NL80211_MESHCONF_FORWARDING, nla_get_u8);
7415 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7416 NL80211_MESHCONF_RSSI_THRESHOLD,
7417 nla_get_s32);
7418 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7419 NL80211_MESHCONF_CONNECTED_TO_GATE,
7420 nla_get_u8);
7421 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7422 NL80211_MESHCONF_CONNECTED_TO_AS,
7423 nla_get_u8);
7424 /*
7425 * Check HT operation mode based on
7426 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7427 */
7428 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7429 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7430
7431 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7432 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7433 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7434 return -EINVAL;
7435
7436 /* NON_HT_STA bit is reserved, but some programs set it */
7437 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7438
7439 cfg->ht_opmode = ht_opmode;
7440 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7441 }
7442 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7443 dot11MeshHWMPactivePathToRootTimeout, mask,
7444 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7445 nla_get_u32);
7446 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7447 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7448 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7449 return -EINVAL;
7450 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7451 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7452 nla_get_u16);
7453 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7454 mask,
7455 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7456 nla_get_u16);
7457 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7458 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7459 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7460 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7461 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7462 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7463 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7464 NL80211_MESHCONF_NOLEARN, nla_get_u8);
7465 if (mask_out)
7466 *mask_out = mask;
7467
7468 return 0;
7469
7470 #undef FILL_IN_MESH_PARAM_IF_SET
7471 }
7472
7473 static int nl80211_parse_mesh_setup(struct genl_info *info,
7474 struct mesh_setup *setup)
7475 {
7476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7477 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7478
7479 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7480 return -EINVAL;
7481 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7482 return -EINVAL;
7483
7484 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7485 setup->sync_method =
7486 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7487 IEEE80211_SYNC_METHOD_VENDOR :
7488 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7489
7490 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7491 setup->path_sel_proto =
7492 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7493 IEEE80211_PATH_PROTOCOL_VENDOR :
7494 IEEE80211_PATH_PROTOCOL_HWMP;
7495
7496 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7497 setup->path_metric =
7498 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7499 IEEE80211_PATH_METRIC_VENDOR :
7500 IEEE80211_PATH_METRIC_AIRTIME;
7501
7502 if (tb[NL80211_MESH_SETUP_IE]) {
7503 struct nlattr *ieattr =
7504 tb[NL80211_MESH_SETUP_IE];
7505 setup->ie = nla_data(ieattr);
7506 setup->ie_len = nla_len(ieattr);
7507 }
7508 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7509 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7510 return -EINVAL;
7511 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7512 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7513 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7514 if (setup->is_secure)
7515 setup->user_mpm = true;
7516
7517 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7518 if (!setup->user_mpm)
7519 return -EINVAL;
7520 setup->auth_id =
7521 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7522 }
7523
7524 return 0;
7525 }
7526
7527 static int nl80211_update_mesh_config(struct sk_buff *skb,
7528 struct genl_info *info)
7529 {
7530 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7531 struct net_device *dev = info->user_ptr[1];
7532 struct wireless_dev *wdev = dev->ieee80211_ptr;
7533 struct mesh_config cfg;
7534 u32 mask;
7535 int err;
7536
7537 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7538 return -EOPNOTSUPP;
7539
7540 if (!rdev->ops->update_mesh_config)
7541 return -EOPNOTSUPP;
7542
7543 err = nl80211_parse_mesh_config(info, &cfg, &mask);
7544 if (err)
7545 return err;
7546
7547 wdev_lock(wdev);
7548 if (!wdev->mesh_id_len)
7549 err = -ENOLINK;
7550
7551 if (!err)
7552 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7553
7554 wdev_unlock(wdev);
7555
7556 return err;
7557 }
7558
7559 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7560 struct sk_buff *msg)
7561 {
7562 struct nlattr *nl_reg_rules;
7563 unsigned int i;
7564
7565 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7566 (regdom->dfs_region &&
7567 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7568 goto nla_put_failure;
7569
7570 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7571 if (!nl_reg_rules)
7572 goto nla_put_failure;
7573
7574 for (i = 0; i < regdom->n_reg_rules; i++) {
7575 struct nlattr *nl_reg_rule;
7576 const struct ieee80211_reg_rule *reg_rule;
7577 const struct ieee80211_freq_range *freq_range;
7578 const struct ieee80211_power_rule *power_rule;
7579 unsigned int max_bandwidth_khz;
7580
7581 reg_rule = &regdom->reg_rules[i];
7582 freq_range = &reg_rule->freq_range;
7583 power_rule = &reg_rule->power_rule;
7584
7585 nl_reg_rule = nla_nest_start_noflag(msg, i);
7586 if (!nl_reg_rule)
7587 goto nla_put_failure;
7588
7589 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7590 if (!max_bandwidth_khz)
7591 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7592 reg_rule);
7593
7594 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7595 reg_rule->flags) ||
7596 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7597 freq_range->start_freq_khz) ||
7598 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7599 freq_range->end_freq_khz) ||
7600 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7601 max_bandwidth_khz) ||
7602 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7603 power_rule->max_antenna_gain) ||
7604 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7605 power_rule->max_eirp) ||
7606 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7607 reg_rule->dfs_cac_ms))
7608 goto nla_put_failure;
7609
7610 nla_nest_end(msg, nl_reg_rule);
7611 }
7612
7613 nla_nest_end(msg, nl_reg_rules);
7614 return 0;
7615
7616 nla_put_failure:
7617 return -EMSGSIZE;
7618 }
7619
7620 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7621 {
7622 const struct ieee80211_regdomain *regdom = NULL;
7623 struct cfg80211_registered_device *rdev;
7624 struct wiphy *wiphy = NULL;
7625 struct sk_buff *msg;
7626 void *hdr;
7627
7628 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7629 if (!msg)
7630 return -ENOBUFS;
7631
7632 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7633 NL80211_CMD_GET_REG);
7634 if (!hdr)
7635 goto put_failure;
7636
7637 if (info->attrs[NL80211_ATTR_WIPHY]) {
7638 bool self_managed;
7639
7640 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7641 if (IS_ERR(rdev)) {
7642 nlmsg_free(msg);
7643 return PTR_ERR(rdev);
7644 }
7645
7646 wiphy = &rdev->wiphy;
7647 self_managed = wiphy->regulatory_flags &
7648 REGULATORY_WIPHY_SELF_MANAGED;
7649 regdom = get_wiphy_regdom(wiphy);
7650
7651 /* a self-managed-reg device must have a private regdom */
7652 if (WARN_ON(!regdom && self_managed)) {
7653 nlmsg_free(msg);
7654 return -EINVAL;
7655 }
7656
7657 if (regdom &&
7658 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7659 goto nla_put_failure;
7660 }
7661
7662 if (!wiphy && reg_last_request_cell_base() &&
7663 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7664 NL80211_USER_REG_HINT_CELL_BASE))
7665 goto nla_put_failure;
7666
7667 rcu_read_lock();
7668
7669 if (!regdom)
7670 regdom = rcu_dereference(cfg80211_regdomain);
7671
7672 if (nl80211_put_regdom(regdom, msg))
7673 goto nla_put_failure_rcu;
7674
7675 rcu_read_unlock();
7676
7677 genlmsg_end(msg, hdr);
7678 return genlmsg_reply(msg, info);
7679
7680 nla_put_failure_rcu:
7681 rcu_read_unlock();
7682 nla_put_failure:
7683 put_failure:
7684 nlmsg_free(msg);
7685 return -EMSGSIZE;
7686 }
7687
7688 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7689 u32 seq, int flags, struct wiphy *wiphy,
7690 const struct ieee80211_regdomain *regdom)
7691 {
7692 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7693 NL80211_CMD_GET_REG);
7694
7695 if (!hdr)
7696 return -1;
7697
7698 genl_dump_check_consistent(cb, hdr);
7699
7700 if (nl80211_put_regdom(regdom, msg))
7701 goto nla_put_failure;
7702
7703 if (!wiphy && reg_last_request_cell_base() &&
7704 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7705 NL80211_USER_REG_HINT_CELL_BASE))
7706 goto nla_put_failure;
7707
7708 if (wiphy &&
7709 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7710 goto nla_put_failure;
7711
7712 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7713 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7714 goto nla_put_failure;
7715
7716 genlmsg_end(msg, hdr);
7717 return 0;
7718
7719 nla_put_failure:
7720 genlmsg_cancel(msg, hdr);
7721 return -EMSGSIZE;
7722 }
7723
7724 static int nl80211_get_reg_dump(struct sk_buff *skb,
7725 struct netlink_callback *cb)
7726 {
7727 const struct ieee80211_regdomain *regdom = NULL;
7728 struct cfg80211_registered_device *rdev;
7729 int err, reg_idx, start = cb->args[2];
7730
7731 rtnl_lock();
7732
7733 if (cfg80211_regdomain && start == 0) {
7734 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7735 NLM_F_MULTI, NULL,
7736 rtnl_dereference(cfg80211_regdomain));
7737 if (err < 0)
7738 goto out_err;
7739 }
7740
7741 /* the global regdom is idx 0 */
7742 reg_idx = 1;
7743 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7744 regdom = get_wiphy_regdom(&rdev->wiphy);
7745 if (!regdom)
7746 continue;
7747
7748 if (++reg_idx <= start)
7749 continue;
7750
7751 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7752 NLM_F_MULTI, &rdev->wiphy, regdom);
7753 if (err < 0) {
7754 reg_idx--;
7755 break;
7756 }
7757 }
7758
7759 cb->args[2] = reg_idx;
7760 err = skb->len;
7761 out_err:
7762 rtnl_unlock();
7763 return err;
7764 }
7765
7766 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7767 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7768 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7769 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7770 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7771 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7772 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7773 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7774 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7775 };
7776
7777 static int parse_reg_rule(struct nlattr *tb[],
7778 struct ieee80211_reg_rule *reg_rule)
7779 {
7780 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7781 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7782
7783 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7784 return -EINVAL;
7785 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7786 return -EINVAL;
7787 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7788 return -EINVAL;
7789 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7790 return -EINVAL;
7791 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7792 return -EINVAL;
7793
7794 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7795
7796 freq_range->start_freq_khz =
7797 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7798 freq_range->end_freq_khz =
7799 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7800 freq_range->max_bandwidth_khz =
7801 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7802
7803 power_rule->max_eirp =
7804 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7805
7806 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7807 power_rule->max_antenna_gain =
7808 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7809
7810 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7811 reg_rule->dfs_cac_ms =
7812 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7813
7814 return 0;
7815 }
7816
7817 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7818 {
7819 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7820 struct nlattr *nl_reg_rule;
7821 char *alpha2;
7822 int rem_reg_rules, r;
7823 u32 num_rules = 0, rule_idx = 0;
7824 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7825 struct ieee80211_regdomain *rd;
7826
7827 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7828 return -EINVAL;
7829
7830 if (!info->attrs[NL80211_ATTR_REG_RULES])
7831 return -EINVAL;
7832
7833 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7834
7835 if (info->attrs[NL80211_ATTR_DFS_REGION])
7836 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7837
7838 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7839 rem_reg_rules) {
7840 num_rules++;
7841 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7842 return -EINVAL;
7843 }
7844
7845 if (!reg_is_valid_request(alpha2))
7846 return -EINVAL;
7847
7848 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7849 if (!rd)
7850 return -ENOMEM;
7851
7852 rd->n_reg_rules = num_rules;
7853 rd->alpha2[0] = alpha2[0];
7854 rd->alpha2[1] = alpha2[1];
7855
7856 /*
7857 * Disable DFS master mode if the DFS region was
7858 * not supported or known on this kernel.
7859 */
7860 if (reg_supported_dfs_region(dfs_region))
7861 rd->dfs_region = dfs_region;
7862
7863 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7864 rem_reg_rules) {
7865 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7866 nl_reg_rule, reg_rule_policy,
7867 info->extack);
7868 if (r)
7869 goto bad_reg;
7870 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7871 if (r)
7872 goto bad_reg;
7873
7874 rule_idx++;
7875
7876 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7877 r = -EINVAL;
7878 goto bad_reg;
7879 }
7880 }
7881
7882 /* set_regdom takes ownership of rd */
7883 return set_regdom(rd, REGD_SOURCE_CRDA);
7884 bad_reg:
7885 kfree(rd);
7886 return r;
7887 }
7888 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7889
7890 static int validate_scan_freqs(struct nlattr *freqs)
7891 {
7892 struct nlattr *attr1, *attr2;
7893 int n_channels = 0, tmp1, tmp2;
7894
7895 nla_for_each_nested(attr1, freqs, tmp1)
7896 if (nla_len(attr1) != sizeof(u32))
7897 return 0;
7898
7899 nla_for_each_nested(attr1, freqs, tmp1) {
7900 n_channels++;
7901 /*
7902 * Some hardware has a limited channel list for
7903 * scanning, and it is pretty much nonsensical
7904 * to scan for a channel twice, so disallow that
7905 * and don't require drivers to check that the
7906 * channel list they get isn't longer than what
7907 * they can scan, as long as they can scan all
7908 * the channels they registered at once.
7909 */
7910 nla_for_each_nested(attr2, freqs, tmp2)
7911 if (attr1 != attr2 &&
7912 nla_get_u32(attr1) == nla_get_u32(attr2))
7913 return 0;
7914 }
7915
7916 return n_channels;
7917 }
7918
7919 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7920 {
7921 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7922 }
7923
7924 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7925 struct cfg80211_bss_selection *bss_select)
7926 {
7927 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7928 struct nlattr *nest;
7929 int err;
7930 bool found = false;
7931 int i;
7932
7933 /* only process one nested attribute */
7934 nest = nla_data(nla);
7935 if (!nla_ok(nest, nla_len(nest)))
7936 return -EINVAL;
7937
7938 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7939 nest, nl80211_bss_select_policy,
7940 NULL);
7941 if (err)
7942 return err;
7943
7944 /* only one attribute may be given */
7945 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7946 if (attr[i]) {
7947 if (found)
7948 return -EINVAL;
7949 found = true;
7950 }
7951 }
7952
7953 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7954
7955 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7956 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7957
7958 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7959 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7960 bss_select->param.band_pref =
7961 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7962 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7963 return -EINVAL;
7964 }
7965
7966 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7967 struct nl80211_bss_select_rssi_adjust *adj_param;
7968
7969 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7970 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7971 bss_select->param.adjust.band = adj_param->band;
7972 bss_select->param.adjust.delta = adj_param->delta;
7973 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7974 return -EINVAL;
7975 }
7976
7977 /* user-space did not provide behaviour attribute */
7978 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7979 return -EINVAL;
7980
7981 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7982 return -EINVAL;
7983
7984 return 0;
7985 }
7986
7987 int nl80211_parse_random_mac(struct nlattr **attrs,
7988 u8 *mac_addr, u8 *mac_addr_mask)
7989 {
7990 int i;
7991
7992 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7993 eth_zero_addr(mac_addr);
7994 eth_zero_addr(mac_addr_mask);
7995 mac_addr[0] = 0x2;
7996 mac_addr_mask[0] = 0x3;
7997
7998 return 0;
7999 }
8000
8001 /* need both or none */
8002 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8003 return -EINVAL;
8004
8005 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8006 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8007
8008 /* don't allow or configure an mcast address */
8009 if (!is_multicast_ether_addr(mac_addr_mask) ||
8010 is_multicast_ether_addr(mac_addr))
8011 return -EINVAL;
8012
8013 /*
8014 * allow users to pass a MAC address that has bits set outside
8015 * of the mask, but don't bother drivers with having to deal
8016 * with such bits
8017 */
8018 for (i = 0; i < ETH_ALEN; i++)
8019 mac_addr[i] &= mac_addr_mask[i];
8020
8021 return 0;
8022 }
8023
8024 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8025 {
8026 ASSERT_WDEV_LOCK(wdev);
8027
8028 if (!cfg80211_beaconing_iface_active(wdev))
8029 return true;
8030
8031 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8032 return true;
8033
8034 return regulatory_pre_cac_allowed(wdev->wiphy);
8035 }
8036
8037 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8038 enum nl80211_ext_feature_index feat)
8039 {
8040 if (!(flags & flag))
8041 return true;
8042 if (wiphy_ext_feature_isset(wiphy, feat))
8043 return true;
8044 return false;
8045 }
8046
8047 static int
8048 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8049 void *request, struct nlattr **attrs,
8050 bool is_sched_scan)
8051 {
8052 u8 *mac_addr, *mac_addr_mask;
8053 u32 *flags;
8054 enum nl80211_feature_flags randomness_flag;
8055
8056 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8057 return 0;
8058
8059 if (is_sched_scan) {
8060 struct cfg80211_sched_scan_request *req = request;
8061
8062 randomness_flag = wdev ?
8063 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8064 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8065 flags = &req->flags;
8066 mac_addr = req->mac_addr;
8067 mac_addr_mask = req->mac_addr_mask;
8068 } else {
8069 struct cfg80211_scan_request *req = request;
8070
8071 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8072 flags = &req->flags;
8073 mac_addr = req->mac_addr;
8074 mac_addr_mask = req->mac_addr_mask;
8075 }
8076
8077 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8078
8079 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8080 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8081 !nl80211_check_scan_feat(wiphy, *flags,
8082 NL80211_SCAN_FLAG_LOW_SPAN,
8083 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8084 !nl80211_check_scan_feat(wiphy, *flags,
8085 NL80211_SCAN_FLAG_LOW_POWER,
8086 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8087 !nl80211_check_scan_feat(wiphy, *flags,
8088 NL80211_SCAN_FLAG_HIGH_ACCURACY,
8089 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8090 !nl80211_check_scan_feat(wiphy, *flags,
8091 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8092 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8093 !nl80211_check_scan_feat(wiphy, *flags,
8094 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8095 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8096 !nl80211_check_scan_feat(wiphy, *flags,
8097 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8098 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8099 !nl80211_check_scan_feat(wiphy, *flags,
8100 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8101 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8102 !nl80211_check_scan_feat(wiphy, *flags,
8103 NL80211_SCAN_FLAG_RANDOM_SN,
8104 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8105 !nl80211_check_scan_feat(wiphy, *flags,
8106 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8107 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8108 return -EOPNOTSUPP;
8109
8110 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8111 int err;
8112
8113 if (!(wiphy->features & randomness_flag) ||
8114 (wdev && wdev->current_bss))
8115 return -EOPNOTSUPP;
8116
8117 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8118 if (err)
8119 return err;
8120 }
8121
8122 return 0;
8123 }
8124
8125 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8126 {
8127 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8128 struct wireless_dev *wdev = info->user_ptr[1];
8129 struct cfg80211_scan_request *request;
8130 struct nlattr *scan_freqs = NULL;
8131 bool scan_freqs_khz = false;
8132 struct nlattr *attr;
8133 struct wiphy *wiphy;
8134 int err, tmp, n_ssids = 0, n_channels, i;
8135 size_t ie_len;
8136
8137 wiphy = &rdev->wiphy;
8138
8139 if (wdev->iftype == NL80211_IFTYPE_NAN)
8140 return -EOPNOTSUPP;
8141
8142 if (!rdev->ops->scan)
8143 return -EOPNOTSUPP;
8144
8145 if (rdev->scan_req || rdev->scan_msg)
8146 return -EBUSY;
8147
8148 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8149 if (!wiphy_ext_feature_isset(wiphy,
8150 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8151 return -EOPNOTSUPP;
8152 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8153 scan_freqs_khz = true;
8154 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8155 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8156
8157 if (scan_freqs) {
8158 n_channels = validate_scan_freqs(scan_freqs);
8159 if (!n_channels)
8160 return -EINVAL;
8161 } else {
8162 n_channels = ieee80211_get_num_supported_channels(wiphy);
8163 }
8164
8165 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8166 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8167 n_ssids++;
8168
8169 if (n_ssids > wiphy->max_scan_ssids)
8170 return -EINVAL;
8171
8172 if (info->attrs[NL80211_ATTR_IE])
8173 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8174 else
8175 ie_len = 0;
8176
8177 if (ie_len > wiphy->max_scan_ie_len)
8178 return -EINVAL;
8179
8180 request = kzalloc(sizeof(*request)
8181 + sizeof(*request->ssids) * n_ssids
8182 + sizeof(*request->channels) * n_channels
8183 + ie_len, GFP_KERNEL);
8184 if (!request)
8185 return -ENOMEM;
8186
8187 if (n_ssids)
8188 request->ssids = (void *)&request->channels[n_channels];
8189 request->n_ssids = n_ssids;
8190 if (ie_len) {
8191 if (n_ssids)
8192 request->ie = (void *)(request->ssids + n_ssids);
8193 else
8194 request->ie = (void *)(request->channels + n_channels);
8195 }
8196
8197 i = 0;
8198 if (scan_freqs) {
8199 /* user specified, bail out if channel not found */
8200 nla_for_each_nested(attr, scan_freqs, tmp) {
8201 struct ieee80211_channel *chan;
8202 int freq = nla_get_u32(attr);
8203
8204 if (!scan_freqs_khz)
8205 freq = MHZ_TO_KHZ(freq);
8206
8207 chan = ieee80211_get_channel_khz(wiphy, freq);
8208 if (!chan) {
8209 err = -EINVAL;
8210 goto out_free;
8211 }
8212
8213 /* ignore disabled channels */
8214 if (chan->flags & IEEE80211_CHAN_DISABLED)
8215 continue;
8216
8217 request->channels[i] = chan;
8218 i++;
8219 }
8220 } else {
8221 enum nl80211_band band;
8222
8223 /* all channels */
8224 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8225 int j;
8226
8227 if (!wiphy->bands[band])
8228 continue;
8229 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8230 struct ieee80211_channel *chan;
8231
8232 chan = &wiphy->bands[band]->channels[j];
8233
8234 if (chan->flags & IEEE80211_CHAN_DISABLED)
8235 continue;
8236
8237 request->channels[i] = chan;
8238 i++;
8239 }
8240 }
8241 }
8242
8243 if (!i) {
8244 err = -EINVAL;
8245 goto out_free;
8246 }
8247
8248 request->n_channels = i;
8249
8250 wdev_lock(wdev);
8251 if (!cfg80211_off_channel_oper_allowed(wdev)) {
8252 struct ieee80211_channel *chan;
8253
8254 if (request->n_channels != 1) {
8255 wdev_unlock(wdev);
8256 err = -EBUSY;
8257 goto out_free;
8258 }
8259
8260 chan = request->channels[0];
8261 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8262 wdev_unlock(wdev);
8263 err = -EBUSY;
8264 goto out_free;
8265 }
8266 }
8267 wdev_unlock(wdev);
8268
8269 i = 0;
8270 if (n_ssids) {
8271 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8272 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8273 err = -EINVAL;
8274 goto out_free;
8275 }
8276 request->ssids[i].ssid_len = nla_len(attr);
8277 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8278 i++;
8279 }
8280 }
8281
8282 if (info->attrs[NL80211_ATTR_IE]) {
8283 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8284 memcpy((void *)request->ie,
8285 nla_data(info->attrs[NL80211_ATTR_IE]),
8286 request->ie_len);
8287 }
8288
8289 for (i = 0; i < NUM_NL80211_BANDS; i++)
8290 if (wiphy->bands[i])
8291 request->rates[i] =
8292 (1 << wiphy->bands[i]->n_bitrates) - 1;
8293
8294 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8295 nla_for_each_nested(attr,
8296 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8297 tmp) {
8298 enum nl80211_band band = nla_type(attr);
8299
8300 if (band < 0 || band >= NUM_NL80211_BANDS) {
8301 err = -EINVAL;
8302 goto out_free;
8303 }
8304
8305 if (!wiphy->bands[band])
8306 continue;
8307
8308 err = ieee80211_get_ratemask(wiphy->bands[band],
8309 nla_data(attr),
8310 nla_len(attr),
8311 &request->rates[band]);
8312 if (err)
8313 goto out_free;
8314 }
8315 }
8316
8317 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8318 request->duration =
8319 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8320 request->duration_mandatory =
8321 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8322 }
8323
8324 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8325 false);
8326 if (err)
8327 goto out_free;
8328
8329 request->no_cck =
8330 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8331
8332 /* Initial implementation used NL80211_ATTR_MAC to set the specific
8333 * BSSID to scan for. This was problematic because that same attribute
8334 * was already used for another purpose (local random MAC address). The
8335 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8336 * compatibility with older userspace components, also use the
8337 * NL80211_ATTR_MAC value here if it can be determined to be used for
8338 * the specific BSSID use case instead of the random MAC address
8339 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8340 */
8341 if (info->attrs[NL80211_ATTR_BSSID])
8342 memcpy(request->bssid,
8343 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8344 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8345 info->attrs[NL80211_ATTR_MAC])
8346 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8347 ETH_ALEN);
8348 else
8349 eth_broadcast_addr(request->bssid);
8350
8351 request->wdev = wdev;
8352 request->wiphy = &rdev->wiphy;
8353 request->scan_start = jiffies;
8354
8355 rdev->scan_req = request;
8356 err = cfg80211_scan(rdev);
8357
8358 if (err)
8359 goto out_free;
8360
8361 nl80211_send_scan_start(rdev, wdev);
8362 if (wdev->netdev)
8363 dev_hold(wdev->netdev);
8364
8365 return 0;
8366
8367 out_free:
8368 rdev->scan_req = NULL;
8369 kfree(request);
8370
8371 return err;
8372 }
8373
8374 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8375 {
8376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8377 struct wireless_dev *wdev = info->user_ptr[1];
8378
8379 if (!rdev->ops->abort_scan)
8380 return -EOPNOTSUPP;
8381
8382 if (rdev->scan_msg)
8383 return 0;
8384
8385 if (!rdev->scan_req)
8386 return -ENOENT;
8387
8388 rdev_abort_scan(rdev, wdev);
8389 return 0;
8390 }
8391
8392 static int
8393 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8394 struct cfg80211_sched_scan_request *request,
8395 struct nlattr **attrs)
8396 {
8397 int tmp, err, i = 0;
8398 struct nlattr *attr;
8399
8400 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8401 u32 interval;
8402
8403 /*
8404 * If scan plans are not specified,
8405 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8406 * case one scan plan will be set with the specified scan
8407 * interval and infinite number of iterations.
8408 */
8409 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8410 if (!interval)
8411 return -EINVAL;
8412
8413 request->scan_plans[0].interval =
8414 DIV_ROUND_UP(interval, MSEC_PER_SEC);
8415 if (!request->scan_plans[0].interval)
8416 return -EINVAL;
8417
8418 if (request->scan_plans[0].interval >
8419 wiphy->max_sched_scan_plan_interval)
8420 request->scan_plans[0].interval =
8421 wiphy->max_sched_scan_plan_interval;
8422
8423 return 0;
8424 }
8425
8426 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8427 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8428
8429 if (WARN_ON(i >= n_plans))
8430 return -EINVAL;
8431
8432 err = nla_parse_nested_deprecated(plan,
8433 NL80211_SCHED_SCAN_PLAN_MAX,
8434 attr, nl80211_plan_policy,
8435 NULL);
8436 if (err)
8437 return err;
8438
8439 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8440 return -EINVAL;
8441
8442 request->scan_plans[i].interval =
8443 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8444 if (!request->scan_plans[i].interval ||
8445 request->scan_plans[i].interval >
8446 wiphy->max_sched_scan_plan_interval)
8447 return -EINVAL;
8448
8449 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8450 request->scan_plans[i].iterations =
8451 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8452 if (!request->scan_plans[i].iterations ||
8453 (request->scan_plans[i].iterations >
8454 wiphy->max_sched_scan_plan_iterations))
8455 return -EINVAL;
8456 } else if (i < n_plans - 1) {
8457 /*
8458 * All scan plans but the last one must specify
8459 * a finite number of iterations
8460 */
8461 return -EINVAL;
8462 }
8463
8464 i++;
8465 }
8466
8467 /*
8468 * The last scan plan must not specify the number of
8469 * iterations, it is supposed to run infinitely
8470 */
8471 if (request->scan_plans[n_plans - 1].iterations)
8472 return -EINVAL;
8473
8474 return 0;
8475 }
8476
8477 static int
8478 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8479 struct cfg80211_match_set *match_sets,
8480 struct nlattr *tb_band_rssi,
8481 s32 rssi_thold)
8482 {
8483 struct nlattr *attr;
8484 int i, tmp, ret = 0;
8485
8486 if (!wiphy_ext_feature_isset(wiphy,
8487 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8488 if (tb_band_rssi)
8489 ret = -EOPNOTSUPP;
8490 else
8491 for (i = 0; i < NUM_NL80211_BANDS; i++)
8492 match_sets->per_band_rssi_thold[i] =
8493 NL80211_SCAN_RSSI_THOLD_OFF;
8494 return ret;
8495 }
8496
8497 for (i = 0; i < NUM_NL80211_BANDS; i++)
8498 match_sets->per_band_rssi_thold[i] = rssi_thold;
8499
8500 nla_for_each_nested(attr, tb_band_rssi, tmp) {
8501 enum nl80211_band band = nla_type(attr);
8502
8503 if (band < 0 || band >= NUM_NL80211_BANDS)
8504 return -EINVAL;
8505
8506 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8507 }
8508
8509 return 0;
8510 }
8511
8512 static struct cfg80211_sched_scan_request *
8513 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8514 struct nlattr **attrs, int max_match_sets)
8515 {
8516 struct cfg80211_sched_scan_request *request;
8517 struct nlattr *attr;
8518 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8519 enum nl80211_band band;
8520 size_t ie_len;
8521 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8522 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8523
8524 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8525 n_channels = validate_scan_freqs(
8526 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8527 if (!n_channels)
8528 return ERR_PTR(-EINVAL);
8529 } else {
8530 n_channels = ieee80211_get_num_supported_channels(wiphy);
8531 }
8532
8533 if (attrs[NL80211_ATTR_SCAN_SSIDS])
8534 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8535 tmp)
8536 n_ssids++;
8537
8538 if (n_ssids > wiphy->max_sched_scan_ssids)
8539 return ERR_PTR(-EINVAL);
8540
8541 /*
8542 * First, count the number of 'real' matchsets. Due to an issue with
8543 * the old implementation, matchsets containing only the RSSI attribute
8544 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8545 * RSSI for all matchsets, rather than their own matchset for reporting
8546 * all APs with a strong RSSI. This is needed to be compatible with
8547 * older userspace that treated a matchset with only the RSSI as the
8548 * global RSSI for all other matchsets - if there are other matchsets.
8549 */
8550 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8551 nla_for_each_nested(attr,
8552 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8553 tmp) {
8554 struct nlattr *rssi;
8555
8556 err = nla_parse_nested_deprecated(tb,
8557 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8558 attr,
8559 nl80211_match_policy,
8560 NULL);
8561 if (err)
8562 return ERR_PTR(err);
8563
8564 /* SSID and BSSID are mutually exclusive */
8565 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8566 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8567 return ERR_PTR(-EINVAL);
8568
8569 /* add other standalone attributes here */
8570 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8571 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8572 n_match_sets++;
8573 continue;
8574 }
8575 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8576 if (rssi)
8577 default_match_rssi = nla_get_s32(rssi);
8578 }
8579 }
8580
8581 /* However, if there's no other matchset, add the RSSI one */
8582 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8583 n_match_sets = 1;
8584
8585 if (n_match_sets > max_match_sets)
8586 return ERR_PTR(-EINVAL);
8587
8588 if (attrs[NL80211_ATTR_IE])
8589 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8590 else
8591 ie_len = 0;
8592
8593 if (ie_len > wiphy->max_sched_scan_ie_len)
8594 return ERR_PTR(-EINVAL);
8595
8596 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8597 /*
8598 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8599 * each scan plan already specifies its own interval
8600 */
8601 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8602 return ERR_PTR(-EINVAL);
8603
8604 nla_for_each_nested(attr,
8605 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8606 n_plans++;
8607 } else {
8608 /*
8609 * The scan interval attribute is kept for backward
8610 * compatibility. If no scan plans are specified and sched scan
8611 * interval is specified, one scan plan will be set with this
8612 * scan interval and infinite number of iterations.
8613 */
8614 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8615 return ERR_PTR(-EINVAL);
8616
8617 n_plans = 1;
8618 }
8619
8620 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8621 return ERR_PTR(-EINVAL);
8622
8623 if (!wiphy_ext_feature_isset(
8624 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8625 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8626 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8627 return ERR_PTR(-EINVAL);
8628
8629 request = kzalloc(sizeof(*request)
8630 + sizeof(*request->ssids) * n_ssids
8631 + sizeof(*request->match_sets) * n_match_sets
8632 + sizeof(*request->scan_plans) * n_plans
8633 + sizeof(*request->channels) * n_channels
8634 + ie_len, GFP_KERNEL);
8635 if (!request)
8636 return ERR_PTR(-ENOMEM);
8637
8638 if (n_ssids)
8639 request->ssids = (void *)&request->channels[n_channels];
8640 request->n_ssids = n_ssids;
8641 if (ie_len) {
8642 if (n_ssids)
8643 request->ie = (void *)(request->ssids + n_ssids);
8644 else
8645 request->ie = (void *)(request->channels + n_channels);
8646 }
8647
8648 if (n_match_sets) {
8649 if (request->ie)
8650 request->match_sets = (void *)(request->ie + ie_len);
8651 else if (n_ssids)
8652 request->match_sets =
8653 (void *)(request->ssids + n_ssids);
8654 else
8655 request->match_sets =
8656 (void *)(request->channels + n_channels);
8657 }
8658 request->n_match_sets = n_match_sets;
8659
8660 if (n_match_sets)
8661 request->scan_plans = (void *)(request->match_sets +
8662 n_match_sets);
8663 else if (request->ie)
8664 request->scan_plans = (void *)(request->ie + ie_len);
8665 else if (n_ssids)
8666 request->scan_plans = (void *)(request->ssids + n_ssids);
8667 else
8668 request->scan_plans = (void *)(request->channels + n_channels);
8669
8670 request->n_scan_plans = n_plans;
8671
8672 i = 0;
8673 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8674 /* user specified, bail out if channel not found */
8675 nla_for_each_nested(attr,
8676 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8677 tmp) {
8678 struct ieee80211_channel *chan;
8679
8680 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8681
8682 if (!chan) {
8683 err = -EINVAL;
8684 goto out_free;
8685 }
8686
8687 /* ignore disabled channels */
8688 if (chan->flags & IEEE80211_CHAN_DISABLED)
8689 continue;
8690
8691 request->channels[i] = chan;
8692 i++;
8693 }
8694 } else {
8695 /* all channels */
8696 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8697 int j;
8698
8699 if (!wiphy->bands[band])
8700 continue;
8701 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8702 struct ieee80211_channel *chan;
8703
8704 chan = &wiphy->bands[band]->channels[j];
8705
8706 if (chan->flags & IEEE80211_CHAN_DISABLED)
8707 continue;
8708
8709 request->channels[i] = chan;
8710 i++;
8711 }
8712 }
8713 }
8714
8715 if (!i) {
8716 err = -EINVAL;
8717 goto out_free;
8718 }
8719
8720 request->n_channels = i;
8721
8722 i = 0;
8723 if (n_ssids) {
8724 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8725 tmp) {
8726 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8727 err = -EINVAL;
8728 goto out_free;
8729 }
8730 request->ssids[i].ssid_len = nla_len(attr);
8731 memcpy(request->ssids[i].ssid, nla_data(attr),
8732 nla_len(attr));
8733 i++;
8734 }
8735 }
8736
8737 i = 0;
8738 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8739 nla_for_each_nested(attr,
8740 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8741 tmp) {
8742 struct nlattr *ssid, *bssid, *rssi;
8743
8744 err = nla_parse_nested_deprecated(tb,
8745 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8746 attr,
8747 nl80211_match_policy,
8748 NULL);
8749 if (err)
8750 goto out_free;
8751 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8752 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8753
8754 if (!ssid && !bssid) {
8755 i++;
8756 continue;
8757 }
8758
8759 if (WARN_ON(i >= n_match_sets)) {
8760 /* this indicates a programming error,
8761 * the loop above should have verified
8762 * things properly
8763 */
8764 err = -EINVAL;
8765 goto out_free;
8766 }
8767
8768 if (ssid) {
8769 memcpy(request->match_sets[i].ssid.ssid,
8770 nla_data(ssid), nla_len(ssid));
8771 request->match_sets[i].ssid.ssid_len =
8772 nla_len(ssid);
8773 }
8774 if (bssid)
8775 memcpy(request->match_sets[i].bssid,
8776 nla_data(bssid), ETH_ALEN);
8777
8778 /* special attribute - old implementation w/a */
8779 request->match_sets[i].rssi_thold = default_match_rssi;
8780 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8781 if (rssi)
8782 request->match_sets[i].rssi_thold =
8783 nla_get_s32(rssi);
8784
8785 /* Parse per band RSSI attribute */
8786 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8787 &request->match_sets[i],
8788 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8789 request->match_sets[i].rssi_thold);
8790 if (err)
8791 goto out_free;
8792
8793 i++;
8794 }
8795
8796 /* there was no other matchset, so the RSSI one is alone */
8797 if (i == 0 && n_match_sets)
8798 request->match_sets[0].rssi_thold = default_match_rssi;
8799
8800 request->min_rssi_thold = INT_MAX;
8801 for (i = 0; i < n_match_sets; i++)
8802 request->min_rssi_thold =
8803 min(request->match_sets[i].rssi_thold,
8804 request->min_rssi_thold);
8805 } else {
8806 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8807 }
8808
8809 if (ie_len) {
8810 request->ie_len = ie_len;
8811 memcpy((void *)request->ie,
8812 nla_data(attrs[NL80211_ATTR_IE]),
8813 request->ie_len);
8814 }
8815
8816 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8817 if (err)
8818 goto out_free;
8819
8820 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8821 request->delay =
8822 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8823
8824 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8825 request->relative_rssi = nla_get_s8(
8826 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8827 request->relative_rssi_set = true;
8828 }
8829
8830 if (request->relative_rssi_set &&
8831 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8832 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8833
8834 rssi_adjust = nla_data(
8835 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8836 request->rssi_adjust.band = rssi_adjust->band;
8837 request->rssi_adjust.delta = rssi_adjust->delta;
8838 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8839 err = -EINVAL;
8840 goto out_free;
8841 }
8842 }
8843
8844 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8845 if (err)
8846 goto out_free;
8847
8848 request->scan_start = jiffies;
8849
8850 return request;
8851
8852 out_free:
8853 kfree(request);
8854 return ERR_PTR(err);
8855 }
8856
8857 static int nl80211_start_sched_scan(struct sk_buff *skb,
8858 struct genl_info *info)
8859 {
8860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8861 struct net_device *dev = info->user_ptr[1];
8862 struct wireless_dev *wdev = dev->ieee80211_ptr;
8863 struct cfg80211_sched_scan_request *sched_scan_req;
8864 bool want_multi;
8865 int err;
8866
8867 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8868 return -EOPNOTSUPP;
8869
8870 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8871 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8872 if (err)
8873 return err;
8874
8875 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8876 info->attrs,
8877 rdev->wiphy.max_match_sets);
8878
8879 err = PTR_ERR_OR_ZERO(sched_scan_req);
8880 if (err)
8881 goto out_err;
8882
8883 /* leave request id zero for legacy request
8884 * or if driver does not support multi-scheduled scan
8885 */
8886 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8887 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8888
8889 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8890 if (err)
8891 goto out_free;
8892
8893 sched_scan_req->dev = dev;
8894 sched_scan_req->wiphy = &rdev->wiphy;
8895
8896 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8897 sched_scan_req->owner_nlportid = info->snd_portid;
8898
8899 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8900
8901 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8902 return 0;
8903
8904 out_free:
8905 kfree(sched_scan_req);
8906 out_err:
8907 return err;
8908 }
8909
8910 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8911 struct genl_info *info)
8912 {
8913 struct cfg80211_sched_scan_request *req;
8914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8915 u64 cookie;
8916
8917 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8918 return -EOPNOTSUPP;
8919
8920 if (info->attrs[NL80211_ATTR_COOKIE]) {
8921 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8922 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8923 }
8924
8925 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8926 struct cfg80211_sched_scan_request,
8927 list);
8928 if (!req || req->reqid ||
8929 (req->owner_nlportid &&
8930 req->owner_nlportid != info->snd_portid))
8931 return -ENOENT;
8932
8933 return cfg80211_stop_sched_scan_req(rdev, req, false);
8934 }
8935
8936 static int nl80211_start_radar_detection(struct sk_buff *skb,
8937 struct genl_info *info)
8938 {
8939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8940 struct net_device *dev = info->user_ptr[1];
8941 struct wireless_dev *wdev = dev->ieee80211_ptr;
8942 struct wiphy *wiphy = wdev->wiphy;
8943 struct cfg80211_chan_def chandef;
8944 enum nl80211_dfs_regions dfs_region;
8945 unsigned int cac_time_ms;
8946 int err;
8947
8948 dfs_region = reg_get_dfs_region(wiphy);
8949 if (dfs_region == NL80211_DFS_UNSET)
8950 return -EINVAL;
8951
8952 err = nl80211_parse_chandef(rdev, info, &chandef);
8953 if (err)
8954 return err;
8955
8956 if (netif_carrier_ok(dev))
8957 return -EBUSY;
8958
8959 if (wdev->cac_started)
8960 return -EBUSY;
8961
8962 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8963 if (err < 0)
8964 return err;
8965
8966 if (err == 0)
8967 return -EINVAL;
8968
8969 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8970 return -EINVAL;
8971
8972 /* CAC start is offloaded to HW and can't be started manually */
8973 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8974 return -EOPNOTSUPP;
8975
8976 if (!rdev->ops->start_radar_detection)
8977 return -EOPNOTSUPP;
8978
8979 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8980 if (WARN_ON(!cac_time_ms))
8981 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8982
8983 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8984 if (!err) {
8985 wdev->chandef = chandef;
8986 wdev->cac_started = true;
8987 wdev->cac_start_time = jiffies;
8988 wdev->cac_time_ms = cac_time_ms;
8989 }
8990 return err;
8991 }
8992
8993 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8994 struct genl_info *info)
8995 {
8996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8997 struct net_device *dev = info->user_ptr[1];
8998 struct wireless_dev *wdev = dev->ieee80211_ptr;
8999 struct wiphy *wiphy = wdev->wiphy;
9000 struct cfg80211_chan_def chandef;
9001 enum nl80211_dfs_regions dfs_region;
9002 int err;
9003
9004 dfs_region = reg_get_dfs_region(wiphy);
9005 if (dfs_region == NL80211_DFS_UNSET) {
9006 GENL_SET_ERR_MSG(info,
9007 "DFS Region is not set. Unexpected Radar indication");
9008 return -EINVAL;
9009 }
9010
9011 err = nl80211_parse_chandef(rdev, info, &chandef);
9012 if (err) {
9013 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9014 return err;
9015 }
9016
9017 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9018 if (err < 0) {
9019 GENL_SET_ERR_MSG(info, "chandef is invalid");
9020 return err;
9021 }
9022
9023 if (err == 0) {
9024 GENL_SET_ERR_MSG(info,
9025 "Unexpected Radar indication for chandef/iftype");
9026 return -EINVAL;
9027 }
9028
9029 /* Do not process this notification if radar is already detected
9030 * by kernel on this channel, and return success.
9031 */
9032 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9033 return 0;
9034
9035 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9036
9037 cfg80211_sched_dfs_chan_update(rdev);
9038
9039 rdev->radar_chandef = chandef;
9040
9041 /* Propagate this notification to other radios as well */
9042 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9043
9044 return 0;
9045 }
9046
9047 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9048 {
9049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9050 struct net_device *dev = info->user_ptr[1];
9051 struct wireless_dev *wdev = dev->ieee80211_ptr;
9052 struct cfg80211_csa_settings params;
9053 /* csa_attrs is defined static to avoid waste of stack size - this
9054 * function is called under RTNL lock, so this should not be a problem.
9055 */
9056 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
9057 int err;
9058 bool need_new_beacon = false;
9059 bool need_handle_dfs_flag = true;
9060 int len, i;
9061 u32 cs_count;
9062
9063 if (!rdev->ops->channel_switch ||
9064 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9065 return -EOPNOTSUPP;
9066
9067 switch (dev->ieee80211_ptr->iftype) {
9068 case NL80211_IFTYPE_AP:
9069 case NL80211_IFTYPE_P2P_GO:
9070 need_new_beacon = true;
9071 /* For all modes except AP the handle_dfs flag needs to be
9072 * supplied to tell the kernel that userspace will handle radar
9073 * events when they happen. Otherwise a switch to a channel
9074 * requiring DFS will be rejected.
9075 */
9076 need_handle_dfs_flag = false;
9077
9078 /* useless if AP is not running */
9079 if (!wdev->beacon_interval)
9080 return -ENOTCONN;
9081 break;
9082 case NL80211_IFTYPE_ADHOC:
9083 if (!wdev->ssid_len)
9084 return -ENOTCONN;
9085 break;
9086 case NL80211_IFTYPE_MESH_POINT:
9087 if (!wdev->mesh_id_len)
9088 return -ENOTCONN;
9089 break;
9090 default:
9091 return -EOPNOTSUPP;
9092 }
9093
9094 memset(&params, 0, sizeof(params));
9095 params.beacon_csa.ftm_responder = -1;
9096
9097 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9098 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9099 return -EINVAL;
9100
9101 /* only important for AP, IBSS and mesh create IEs internally */
9102 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9103 return -EINVAL;
9104
9105 /* Even though the attribute is u32, the specification says
9106 * u8, so let's make sure we don't overflow.
9107 */
9108 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9109 if (cs_count > 255)
9110 return -EINVAL;
9111
9112 params.count = cs_count;
9113
9114 if (!need_new_beacon)
9115 goto skip_beacons;
9116
9117 err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9118 if (err)
9119 return err;
9120
9121 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9122 info->attrs[NL80211_ATTR_CSA_IES],
9123 nl80211_policy, info->extack);
9124 if (err)
9125 return err;
9126
9127 err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9128 if (err)
9129 return err;
9130
9131 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9132 return -EINVAL;
9133
9134 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9135 if (!len || (len % sizeof(u16)))
9136 return -EINVAL;
9137
9138 params.n_counter_offsets_beacon = len / sizeof(u16);
9139 if (rdev->wiphy.max_num_csa_counters &&
9140 (params.n_counter_offsets_beacon >
9141 rdev->wiphy.max_num_csa_counters))
9142 return -EINVAL;
9143
9144 params.counter_offsets_beacon =
9145 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9146
9147 /* sanity checks - counters should fit and be the same */
9148 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9149 u16 offset = params.counter_offsets_beacon[i];
9150
9151 if (offset >= params.beacon_csa.tail_len)
9152 return -EINVAL;
9153
9154 if (params.beacon_csa.tail[offset] != params.count)
9155 return -EINVAL;
9156 }
9157
9158 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9159 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9160 if (!len || (len % sizeof(u16)))
9161 return -EINVAL;
9162
9163 params.n_counter_offsets_presp = len / sizeof(u16);
9164 if (rdev->wiphy.max_num_csa_counters &&
9165 (params.n_counter_offsets_presp >
9166 rdev->wiphy.max_num_csa_counters))
9167 return -EINVAL;
9168
9169 params.counter_offsets_presp =
9170 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9171
9172 /* sanity checks - counters should fit and be the same */
9173 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9174 u16 offset = params.counter_offsets_presp[i];
9175
9176 if (offset >= params.beacon_csa.probe_resp_len)
9177 return -EINVAL;
9178
9179 if (params.beacon_csa.probe_resp[offset] !=
9180 params.count)
9181 return -EINVAL;
9182 }
9183 }
9184
9185 skip_beacons:
9186 err = nl80211_parse_chandef(rdev, info, &params.chandef);
9187 if (err)
9188 return err;
9189
9190 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9191 wdev->iftype))
9192 return -EINVAL;
9193
9194 err = cfg80211_chandef_dfs_required(wdev->wiphy,
9195 &params.chandef,
9196 wdev->iftype);
9197 if (err < 0)
9198 return err;
9199
9200 if (err > 0) {
9201 params.radar_required = true;
9202 if (need_handle_dfs_flag &&
9203 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9204 return -EINVAL;
9205 }
9206 }
9207
9208 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9209 params.block_tx = true;
9210
9211 wdev_lock(wdev);
9212 err = rdev_channel_switch(rdev, dev, &params);
9213 wdev_unlock(wdev);
9214
9215 return err;
9216 }
9217
9218 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9219 u32 seq, int flags,
9220 struct cfg80211_registered_device *rdev,
9221 struct wireless_dev *wdev,
9222 struct cfg80211_internal_bss *intbss)
9223 {
9224 struct cfg80211_bss *res = &intbss->pub;
9225 const struct cfg80211_bss_ies *ies;
9226 void *hdr;
9227 struct nlattr *bss;
9228
9229 ASSERT_WDEV_LOCK(wdev);
9230
9231 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9232 NL80211_CMD_NEW_SCAN_RESULTS);
9233 if (!hdr)
9234 return -1;
9235
9236 genl_dump_check_consistent(cb, hdr);
9237
9238 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9239 goto nla_put_failure;
9240 if (wdev->netdev &&
9241 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9242 goto nla_put_failure;
9243 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9244 NL80211_ATTR_PAD))
9245 goto nla_put_failure;
9246
9247 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9248 if (!bss)
9249 goto nla_put_failure;
9250 if ((!is_zero_ether_addr(res->bssid) &&
9251 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9252 goto nla_put_failure;
9253
9254 rcu_read_lock();
9255 /* indicate whether we have probe response data or not */
9256 if (rcu_access_pointer(res->proberesp_ies) &&
9257 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9258 goto fail_unlock_rcu;
9259
9260 /* this pointer prefers to be pointed to probe response data
9261 * but is always valid
9262 */
9263 ies = rcu_dereference(res->ies);
9264 if (ies) {
9265 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9266 NL80211_BSS_PAD))
9267 goto fail_unlock_rcu;
9268 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9269 ies->len, ies->data))
9270 goto fail_unlock_rcu;
9271 }
9272
9273 /* and this pointer is always (unless driver didn't know) beacon data */
9274 ies = rcu_dereference(res->beacon_ies);
9275 if (ies && ies->from_beacon) {
9276 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9277 NL80211_BSS_PAD))
9278 goto fail_unlock_rcu;
9279 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9280 ies->len, ies->data))
9281 goto fail_unlock_rcu;
9282 }
9283 rcu_read_unlock();
9284
9285 if (res->beacon_interval &&
9286 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9287 goto nla_put_failure;
9288 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9289 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9290 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9291 res->channel->freq_offset) ||
9292 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9293 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9294 jiffies_to_msecs(jiffies - intbss->ts)))
9295 goto nla_put_failure;
9296
9297 if (intbss->parent_tsf &&
9298 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9299 intbss->parent_tsf, NL80211_BSS_PAD) ||
9300 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9301 intbss->parent_bssid)))
9302 goto nla_put_failure;
9303
9304 if (intbss->ts_boottime &&
9305 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9306 intbss->ts_boottime, NL80211_BSS_PAD))
9307 goto nla_put_failure;
9308
9309 if (!nl80211_put_signal(msg, intbss->pub.chains,
9310 intbss->pub.chain_signal,
9311 NL80211_BSS_CHAIN_SIGNAL))
9312 goto nla_put_failure;
9313
9314 switch (rdev->wiphy.signal_type) {
9315 case CFG80211_SIGNAL_TYPE_MBM:
9316 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9317 goto nla_put_failure;
9318 break;
9319 case CFG80211_SIGNAL_TYPE_UNSPEC:
9320 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9321 goto nla_put_failure;
9322 break;
9323 default:
9324 break;
9325 }
9326
9327 switch (wdev->iftype) {
9328 case NL80211_IFTYPE_P2P_CLIENT:
9329 case NL80211_IFTYPE_STATION:
9330 if (intbss == wdev->current_bss &&
9331 nla_put_u32(msg, NL80211_BSS_STATUS,
9332 NL80211_BSS_STATUS_ASSOCIATED))
9333 goto nla_put_failure;
9334 break;
9335 case NL80211_IFTYPE_ADHOC:
9336 if (intbss == wdev->current_bss &&
9337 nla_put_u32(msg, NL80211_BSS_STATUS,
9338 NL80211_BSS_STATUS_IBSS_JOINED))
9339 goto nla_put_failure;
9340 break;
9341 default:
9342 break;
9343 }
9344
9345 nla_nest_end(msg, bss);
9346
9347 genlmsg_end(msg, hdr);
9348 return 0;
9349
9350 fail_unlock_rcu:
9351 rcu_read_unlock();
9352 nla_put_failure:
9353 genlmsg_cancel(msg, hdr);
9354 return -EMSGSIZE;
9355 }
9356
9357 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9358 {
9359 struct cfg80211_registered_device *rdev;
9360 struct cfg80211_internal_bss *scan;
9361 struct wireless_dev *wdev;
9362 int start = cb->args[2], idx = 0;
9363 int err;
9364
9365 rtnl_lock();
9366 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9367 if (err) {
9368 rtnl_unlock();
9369 return err;
9370 }
9371
9372 wdev_lock(wdev);
9373 spin_lock_bh(&rdev->bss_lock);
9374
9375 /*
9376 * dump_scan will be called multiple times to break up the scan results
9377 * into multiple messages. It is unlikely that any more bss-es will be
9378 * expired after the first call, so only call only call this on the
9379 * first dump_scan invocation.
9380 */
9381 if (start == 0)
9382 cfg80211_bss_expire(rdev);
9383
9384 cb->seq = rdev->bss_generation;
9385
9386 list_for_each_entry(scan, &rdev->bss_list, list) {
9387 if (++idx <= start)
9388 continue;
9389 if (nl80211_send_bss(skb, cb,
9390 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9391 rdev, wdev, scan) < 0) {
9392 idx--;
9393 break;
9394 }
9395 }
9396
9397 spin_unlock_bh(&rdev->bss_lock);
9398 wdev_unlock(wdev);
9399
9400 cb->args[2] = idx;
9401 rtnl_unlock();
9402
9403 return skb->len;
9404 }
9405
9406 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9407 int flags, struct net_device *dev,
9408 bool allow_radio_stats,
9409 struct survey_info *survey)
9410 {
9411 void *hdr;
9412 struct nlattr *infoattr;
9413
9414 /* skip radio stats if userspace didn't request them */
9415 if (!survey->channel && !allow_radio_stats)
9416 return 0;
9417
9418 hdr = nl80211hdr_put(msg, portid, seq, flags,
9419 NL80211_CMD_NEW_SURVEY_RESULTS);
9420 if (!hdr)
9421 return -ENOMEM;
9422
9423 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9424 goto nla_put_failure;
9425
9426 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9427 if (!infoattr)
9428 goto nla_put_failure;
9429
9430 if (survey->channel &&
9431 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9432 survey->channel->center_freq))
9433 goto nla_put_failure;
9434
9435 if (survey->channel && survey->channel->freq_offset &&
9436 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9437 survey->channel->freq_offset))
9438 goto nla_put_failure;
9439
9440 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9441 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9442 goto nla_put_failure;
9443 if ((survey->filled & SURVEY_INFO_IN_USE) &&
9444 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9445 goto nla_put_failure;
9446 if ((survey->filled & SURVEY_INFO_TIME) &&
9447 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9448 survey->time, NL80211_SURVEY_INFO_PAD))
9449 goto nla_put_failure;
9450 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9451 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9452 survey->time_busy, NL80211_SURVEY_INFO_PAD))
9453 goto nla_put_failure;
9454 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9455 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9456 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9457 goto nla_put_failure;
9458 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9459 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9460 survey->time_rx, NL80211_SURVEY_INFO_PAD))
9461 goto nla_put_failure;
9462 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9463 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9464 survey->time_tx, NL80211_SURVEY_INFO_PAD))
9465 goto nla_put_failure;
9466 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9467 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9468 survey->time_scan, NL80211_SURVEY_INFO_PAD))
9469 goto nla_put_failure;
9470 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9471 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9472 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9473 goto nla_put_failure;
9474
9475 nla_nest_end(msg, infoattr);
9476
9477 genlmsg_end(msg, hdr);
9478 return 0;
9479
9480 nla_put_failure:
9481 genlmsg_cancel(msg, hdr);
9482 return -EMSGSIZE;
9483 }
9484
9485 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9486 {
9487 struct nlattr **attrbuf;
9488 struct survey_info survey;
9489 struct cfg80211_registered_device *rdev;
9490 struct wireless_dev *wdev;
9491 int survey_idx = cb->args[2];
9492 int res;
9493 bool radio_stats;
9494
9495 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9496 if (!attrbuf)
9497 return -ENOMEM;
9498
9499 rtnl_lock();
9500 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9501 if (res)
9502 goto out_err;
9503
9504 /* prepare_wdev_dump parsed the attributes */
9505 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9506
9507 if (!wdev->netdev) {
9508 res = -EINVAL;
9509 goto out_err;
9510 }
9511
9512 if (!rdev->ops->dump_survey) {
9513 res = -EOPNOTSUPP;
9514 goto out_err;
9515 }
9516
9517 while (1) {
9518 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9519 if (res == -ENOENT)
9520 break;
9521 if (res)
9522 goto out_err;
9523
9524 /* don't send disabled channels, but do send non-channel data */
9525 if (survey.channel &&
9526 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9527 survey_idx++;
9528 continue;
9529 }
9530
9531 if (nl80211_send_survey(skb,
9532 NETLINK_CB(cb->skb).portid,
9533 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9534 wdev->netdev, radio_stats, &survey) < 0)
9535 goto out;
9536 survey_idx++;
9537 }
9538
9539 out:
9540 cb->args[2] = survey_idx;
9541 res = skb->len;
9542 out_err:
9543 kfree(attrbuf);
9544 rtnl_unlock();
9545 return res;
9546 }
9547
9548 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9549 {
9550 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9551 NL80211_WPA_VERSION_2 |
9552 NL80211_WPA_VERSION_3));
9553 }
9554
9555 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9556 {
9557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9558 struct net_device *dev = info->user_ptr[1];
9559 struct ieee80211_channel *chan;
9560 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9561 int err, ssid_len, ie_len = 0, auth_data_len = 0;
9562 enum nl80211_auth_type auth_type;
9563 struct key_parse key;
9564 bool local_state_change;
9565 u32 freq;
9566
9567 if (!info->attrs[NL80211_ATTR_MAC])
9568 return -EINVAL;
9569
9570 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9571 return -EINVAL;
9572
9573 if (!info->attrs[NL80211_ATTR_SSID])
9574 return -EINVAL;
9575
9576 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9577 return -EINVAL;
9578
9579 err = nl80211_parse_key(info, &key);
9580 if (err)
9581 return err;
9582
9583 if (key.idx >= 0) {
9584 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9585 return -EINVAL;
9586 if (!key.p.key || !key.p.key_len)
9587 return -EINVAL;
9588 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9589 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9590 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9591 key.p.key_len != WLAN_KEY_LEN_WEP104))
9592 return -EINVAL;
9593 if (key.idx > 3)
9594 return -EINVAL;
9595 } else {
9596 key.p.key_len = 0;
9597 key.p.key = NULL;
9598 }
9599
9600 if (key.idx >= 0) {
9601 int i;
9602 bool ok = false;
9603
9604 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9605 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9606 ok = true;
9607 break;
9608 }
9609 }
9610 if (!ok)
9611 return -EINVAL;
9612 }
9613
9614 if (!rdev->ops->auth)
9615 return -EOPNOTSUPP;
9616
9617 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9618 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9619 return -EOPNOTSUPP;
9620
9621 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9622 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9623 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9624 freq +=
9625 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9626
9627 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9628 if (!chan)
9629 return -EINVAL;
9630
9631 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9632 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9633
9634 if (info->attrs[NL80211_ATTR_IE]) {
9635 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9636 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9637 }
9638
9639 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9640 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9641 return -EINVAL;
9642
9643 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9644 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9645 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9646 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9647 !info->attrs[NL80211_ATTR_AUTH_DATA])
9648 return -EINVAL;
9649
9650 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9651 if (auth_type != NL80211_AUTHTYPE_SAE &&
9652 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9653 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9654 auth_type != NL80211_AUTHTYPE_FILS_PK)
9655 return -EINVAL;
9656 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9657 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9658 }
9659
9660 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9661
9662 /*
9663 * Since we no longer track auth state, ignore
9664 * requests to only change local state.
9665 */
9666 if (local_state_change)
9667 return 0;
9668
9669 wdev_lock(dev->ieee80211_ptr);
9670 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9671 ssid, ssid_len, ie, ie_len,
9672 key.p.key, key.p.key_len, key.idx,
9673 auth_data, auth_data_len);
9674 wdev_unlock(dev->ieee80211_ptr);
9675 return err;
9676 }
9677
9678 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9679 struct genl_info *info)
9680 {
9681 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9682 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9683 return -EINVAL;
9684 }
9685
9686 if (!rdev->ops->tx_control_port ||
9687 !wiphy_ext_feature_isset(&rdev->wiphy,
9688 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9689 return -EOPNOTSUPP;
9690
9691 return 0;
9692 }
9693
9694 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9695 struct genl_info *info,
9696 struct cfg80211_crypto_settings *settings,
9697 int cipher_limit)
9698 {
9699 memset(settings, 0, sizeof(*settings));
9700
9701 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9702
9703 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9704 u16 proto;
9705
9706 proto = nla_get_u16(
9707 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9708 settings->control_port_ethertype = cpu_to_be16(proto);
9709 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9710 proto != ETH_P_PAE)
9711 return -EINVAL;
9712 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9713 settings->control_port_no_encrypt = true;
9714 } else
9715 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9716
9717 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9718 int r = validate_pae_over_nl80211(rdev, info);
9719
9720 if (r < 0)
9721 return r;
9722
9723 settings->control_port_over_nl80211 = true;
9724
9725 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9726 settings->control_port_no_preauth = true;
9727 }
9728
9729 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9730 void *data;
9731 int len, i;
9732
9733 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9734 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9735 settings->n_ciphers_pairwise = len / sizeof(u32);
9736
9737 if (len % sizeof(u32))
9738 return -EINVAL;
9739
9740 if (settings->n_ciphers_pairwise > cipher_limit)
9741 return -EINVAL;
9742
9743 memcpy(settings->ciphers_pairwise, data, len);
9744
9745 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9746 if (!cfg80211_supported_cipher_suite(
9747 &rdev->wiphy,
9748 settings->ciphers_pairwise[i]))
9749 return -EINVAL;
9750 }
9751
9752 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9753 settings->cipher_group =
9754 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9755 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9756 settings->cipher_group))
9757 return -EINVAL;
9758 }
9759
9760 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9761 settings->wpa_versions =
9762 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9763 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9764 return -EINVAL;
9765 }
9766
9767 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9768 void *data;
9769 int len;
9770
9771 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9772 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9773 settings->n_akm_suites = len / sizeof(u32);
9774
9775 if (len % sizeof(u32))
9776 return -EINVAL;
9777
9778 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9779 return -EINVAL;
9780
9781 memcpy(settings->akm_suites, data, len);
9782 }
9783
9784 if (info->attrs[NL80211_ATTR_PMK]) {
9785 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9786 return -EINVAL;
9787 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9788 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9789 !wiphy_ext_feature_isset(&rdev->wiphy,
9790 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9791 return -EINVAL;
9792 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9793 }
9794
9795 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9796 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9797 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9798 !wiphy_ext_feature_isset(&rdev->wiphy,
9799 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9800 return -EINVAL;
9801 settings->sae_pwd =
9802 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9803 settings->sae_pwd_len =
9804 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9805 }
9806
9807 if (info->attrs[NL80211_ATTR_SAE_PWE])
9808 settings->sae_pwe =
9809 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9810 else
9811 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9812
9813 return 0;
9814 }
9815
9816 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9817 {
9818 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9819 struct net_device *dev = info->user_ptr[1];
9820 struct ieee80211_channel *chan;
9821 struct cfg80211_assoc_request req = {};
9822 const u8 *bssid, *ssid;
9823 int err, ssid_len = 0;
9824 u32 freq;
9825
9826 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9827 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9828 return -EPERM;
9829
9830 if (!info->attrs[NL80211_ATTR_MAC] ||
9831 !info->attrs[NL80211_ATTR_SSID] ||
9832 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9833 return -EINVAL;
9834
9835 if (!rdev->ops->assoc)
9836 return -EOPNOTSUPP;
9837
9838 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9839 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9840 return -EOPNOTSUPP;
9841
9842 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9843
9844 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9845 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9846 freq +=
9847 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9848 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9849 if (!chan)
9850 return -EINVAL;
9851
9852 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9853 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9854
9855 if (info->attrs[NL80211_ATTR_IE]) {
9856 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9857 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9858 }
9859
9860 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9861 enum nl80211_mfp mfp =
9862 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9863 if (mfp == NL80211_MFP_REQUIRED)
9864 req.use_mfp = true;
9865 else if (mfp != NL80211_MFP_NO)
9866 return -EINVAL;
9867 }
9868
9869 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9870 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9871
9872 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9873 req.flags |= ASSOC_REQ_DISABLE_HT;
9874
9875 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9876 memcpy(&req.ht_capa_mask,
9877 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9878 sizeof(req.ht_capa_mask));
9879
9880 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9881 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9882 return -EINVAL;
9883 memcpy(&req.ht_capa,
9884 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9885 sizeof(req.ht_capa));
9886 }
9887
9888 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9889 req.flags |= ASSOC_REQ_DISABLE_VHT;
9890
9891 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9892 memcpy(&req.vht_capa_mask,
9893 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9894 sizeof(req.vht_capa_mask));
9895
9896 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9897 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9898 return -EINVAL;
9899 memcpy(&req.vht_capa,
9900 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9901 sizeof(req.vht_capa));
9902 }
9903
9904 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9905 if (!((rdev->wiphy.features &
9906 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9907 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9908 !wiphy_ext_feature_isset(&rdev->wiphy,
9909 NL80211_EXT_FEATURE_RRM))
9910 return -EINVAL;
9911 req.flags |= ASSOC_REQ_USE_RRM;
9912 }
9913
9914 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9915 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9916 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9917 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9918 return -EINVAL;
9919 req.fils_nonces =
9920 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9921 }
9922
9923 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9924 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9925 return -EINVAL;
9926 memcpy(&req.s1g_capa_mask,
9927 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9928 sizeof(req.s1g_capa_mask));
9929 }
9930
9931 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9932 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9933 return -EINVAL;
9934 memcpy(&req.s1g_capa,
9935 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9936 sizeof(req.s1g_capa));
9937 }
9938
9939 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9940 if (!err) {
9941 wdev_lock(dev->ieee80211_ptr);
9942
9943 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9944 ssid, ssid_len, &req);
9945
9946 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9947 dev->ieee80211_ptr->conn_owner_nlportid =
9948 info->snd_portid;
9949 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9950 bssid, ETH_ALEN);
9951 }
9952
9953 wdev_unlock(dev->ieee80211_ptr);
9954 }
9955
9956 return err;
9957 }
9958
9959 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9960 {
9961 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9962 struct net_device *dev = info->user_ptr[1];
9963 const u8 *ie = NULL, *bssid;
9964 int ie_len = 0, err;
9965 u16 reason_code;
9966 bool local_state_change;
9967
9968 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9969 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9970 return -EPERM;
9971
9972 if (!info->attrs[NL80211_ATTR_MAC])
9973 return -EINVAL;
9974
9975 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9976 return -EINVAL;
9977
9978 if (!rdev->ops->deauth)
9979 return -EOPNOTSUPP;
9980
9981 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9982 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9983 return -EOPNOTSUPP;
9984
9985 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9986
9987 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9988 if (reason_code == 0) {
9989 /* Reason Code 0 is reserved */
9990 return -EINVAL;
9991 }
9992
9993 if (info->attrs[NL80211_ATTR_IE]) {
9994 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9995 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9996 }
9997
9998 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9999
10000 wdev_lock(dev->ieee80211_ptr);
10001 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10002 local_state_change);
10003 wdev_unlock(dev->ieee80211_ptr);
10004 return err;
10005 }
10006
10007 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10008 {
10009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10010 struct net_device *dev = info->user_ptr[1];
10011 const u8 *ie = NULL, *bssid;
10012 int ie_len = 0, err;
10013 u16 reason_code;
10014 bool local_state_change;
10015
10016 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10017 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10018 return -EPERM;
10019
10020 if (!info->attrs[NL80211_ATTR_MAC])
10021 return -EINVAL;
10022
10023 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10024 return -EINVAL;
10025
10026 if (!rdev->ops->disassoc)
10027 return -EOPNOTSUPP;
10028
10029 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10030 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10031 return -EOPNOTSUPP;
10032
10033 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10034
10035 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10036 if (reason_code == 0) {
10037 /* Reason Code 0 is reserved */
10038 return -EINVAL;
10039 }
10040
10041 if (info->attrs[NL80211_ATTR_IE]) {
10042 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10043 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10044 }
10045
10046 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10047
10048 wdev_lock(dev->ieee80211_ptr);
10049 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10050 local_state_change);
10051 wdev_unlock(dev->ieee80211_ptr);
10052 return err;
10053 }
10054
10055 static bool
10056 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10057 int mcast_rate[NUM_NL80211_BANDS],
10058 int rateval)
10059 {
10060 struct wiphy *wiphy = &rdev->wiphy;
10061 bool found = false;
10062 int band, i;
10063
10064 for (band = 0; band < NUM_NL80211_BANDS; band++) {
10065 struct ieee80211_supported_band *sband;
10066
10067 sband = wiphy->bands[band];
10068 if (!sband)
10069 continue;
10070
10071 for (i = 0; i < sband->n_bitrates; i++) {
10072 if (sband->bitrates[i].bitrate == rateval) {
10073 mcast_rate[band] = i + 1;
10074 found = true;
10075 break;
10076 }
10077 }
10078 }
10079
10080 return found;
10081 }
10082
10083 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10084 {
10085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10086 struct net_device *dev = info->user_ptr[1];
10087 struct cfg80211_ibss_params ibss;
10088 struct wiphy *wiphy;
10089 struct cfg80211_cached_keys *connkeys = NULL;
10090 int err;
10091
10092 memset(&ibss, 0, sizeof(ibss));
10093
10094 if (!info->attrs[NL80211_ATTR_SSID] ||
10095 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10096 return -EINVAL;
10097
10098 ibss.beacon_interval = 100;
10099
10100 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10101 ibss.beacon_interval =
10102 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10103
10104 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10105 ibss.beacon_interval);
10106 if (err)
10107 return err;
10108
10109 if (!rdev->ops->join_ibss)
10110 return -EOPNOTSUPP;
10111
10112 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10113 return -EOPNOTSUPP;
10114
10115 wiphy = &rdev->wiphy;
10116
10117 if (info->attrs[NL80211_ATTR_MAC]) {
10118 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10119
10120 if (!is_valid_ether_addr(ibss.bssid))
10121 return -EINVAL;
10122 }
10123 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10124 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10125
10126 if (info->attrs[NL80211_ATTR_IE]) {
10127 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10128 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10129 }
10130
10131 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10132 if (err)
10133 return err;
10134
10135 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10136 NL80211_IFTYPE_ADHOC))
10137 return -EINVAL;
10138
10139 switch (ibss.chandef.width) {
10140 case NL80211_CHAN_WIDTH_5:
10141 case NL80211_CHAN_WIDTH_10:
10142 case NL80211_CHAN_WIDTH_20_NOHT:
10143 break;
10144 case NL80211_CHAN_WIDTH_20:
10145 case NL80211_CHAN_WIDTH_40:
10146 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10147 return -EINVAL;
10148 break;
10149 case NL80211_CHAN_WIDTH_80:
10150 case NL80211_CHAN_WIDTH_80P80:
10151 case NL80211_CHAN_WIDTH_160:
10152 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10153 return -EINVAL;
10154 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10155 NL80211_EXT_FEATURE_VHT_IBSS))
10156 return -EINVAL;
10157 break;
10158 default:
10159 return -EINVAL;
10160 }
10161
10162 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10163 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10164
10165 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10166 u8 *rates =
10167 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10168 int n_rates =
10169 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10170 struct ieee80211_supported_band *sband =
10171 wiphy->bands[ibss.chandef.chan->band];
10172
10173 err = ieee80211_get_ratemask(sband, rates, n_rates,
10174 &ibss.basic_rates);
10175 if (err)
10176 return err;
10177 }
10178
10179 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10180 memcpy(&ibss.ht_capa_mask,
10181 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10182 sizeof(ibss.ht_capa_mask));
10183
10184 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10185 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10186 return -EINVAL;
10187 memcpy(&ibss.ht_capa,
10188 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10189 sizeof(ibss.ht_capa));
10190 }
10191
10192 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10193 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10194 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10195 return -EINVAL;
10196
10197 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10198 bool no_ht = false;
10199
10200 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10201 if (IS_ERR(connkeys))
10202 return PTR_ERR(connkeys);
10203
10204 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10205 no_ht) {
10206 kfree_sensitive(connkeys);
10207 return -EINVAL;
10208 }
10209 }
10210
10211 ibss.control_port =
10212 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10213
10214 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10215 int r = validate_pae_over_nl80211(rdev, info);
10216
10217 if (r < 0) {
10218 kfree_sensitive(connkeys);
10219 return r;
10220 }
10221
10222 ibss.control_port_over_nl80211 = true;
10223 }
10224
10225 ibss.userspace_handles_dfs =
10226 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10227
10228 wdev_lock(dev->ieee80211_ptr);
10229 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10230 if (err)
10231 kfree_sensitive(connkeys);
10232 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10233 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10234 wdev_unlock(dev->ieee80211_ptr);
10235
10236 return err;
10237 }
10238
10239 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10240 {
10241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10242 struct net_device *dev = info->user_ptr[1];
10243
10244 if (!rdev->ops->leave_ibss)
10245 return -EOPNOTSUPP;
10246
10247 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10248 return -EOPNOTSUPP;
10249
10250 return cfg80211_leave_ibss(rdev, dev, false);
10251 }
10252
10253 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10254 {
10255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10256 struct net_device *dev = info->user_ptr[1];
10257 int mcast_rate[NUM_NL80211_BANDS];
10258 u32 nla_rate;
10259 int err;
10260
10261 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10264 return -EOPNOTSUPP;
10265
10266 if (!rdev->ops->set_mcast_rate)
10267 return -EOPNOTSUPP;
10268
10269 memset(mcast_rate, 0, sizeof(mcast_rate));
10270
10271 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10272 return -EINVAL;
10273
10274 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10275 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10276 return -EINVAL;
10277
10278 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10279
10280 return err;
10281 }
10282
10283 static struct sk_buff *
10284 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10285 struct wireless_dev *wdev, int approxlen,
10286 u32 portid, u32 seq, enum nl80211_commands cmd,
10287 enum nl80211_attrs attr,
10288 const struct nl80211_vendor_cmd_info *info,
10289 gfp_t gfp)
10290 {
10291 struct sk_buff *skb;
10292 void *hdr;
10293 struct nlattr *data;
10294
10295 skb = nlmsg_new(approxlen + 100, gfp);
10296 if (!skb)
10297 return NULL;
10298
10299 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10300 if (!hdr) {
10301 kfree_skb(skb);
10302 return NULL;
10303 }
10304
10305 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10306 goto nla_put_failure;
10307
10308 if (info) {
10309 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10310 info->vendor_id))
10311 goto nla_put_failure;
10312 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10313 info->subcmd))
10314 goto nla_put_failure;
10315 }
10316
10317 if (wdev) {
10318 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10319 wdev_id(wdev), NL80211_ATTR_PAD))
10320 goto nla_put_failure;
10321 if (wdev->netdev &&
10322 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10323 wdev->netdev->ifindex))
10324 goto nla_put_failure;
10325 }
10326
10327 data = nla_nest_start_noflag(skb, attr);
10328 if (!data)
10329 goto nla_put_failure;
10330
10331 ((void **)skb->cb)[0] = rdev;
10332 ((void **)skb->cb)[1] = hdr;
10333 ((void **)skb->cb)[2] = data;
10334
10335 return skb;
10336
10337 nla_put_failure:
10338 kfree_skb(skb);
10339 return NULL;
10340 }
10341
10342 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10343 struct wireless_dev *wdev,
10344 enum nl80211_commands cmd,
10345 enum nl80211_attrs attr,
10346 unsigned int portid,
10347 int vendor_event_idx,
10348 int approxlen, gfp_t gfp)
10349 {
10350 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10351 const struct nl80211_vendor_cmd_info *info;
10352
10353 switch (cmd) {
10354 case NL80211_CMD_TESTMODE:
10355 if (WARN_ON(vendor_event_idx != -1))
10356 return NULL;
10357 info = NULL;
10358 break;
10359 case NL80211_CMD_VENDOR:
10360 if (WARN_ON(vendor_event_idx < 0 ||
10361 vendor_event_idx >= wiphy->n_vendor_events))
10362 return NULL;
10363 info = &wiphy->vendor_events[vendor_event_idx];
10364 break;
10365 default:
10366 WARN_ON(1);
10367 return NULL;
10368 }
10369
10370 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10371 cmd, attr, info, gfp);
10372 }
10373 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10374
10375 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10376 {
10377 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10378 void *hdr = ((void **)skb->cb)[1];
10379 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10380 struct nlattr *data = ((void **)skb->cb)[2];
10381 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10382
10383 /* clear CB data for netlink core to own from now on */
10384 memset(skb->cb, 0, sizeof(skb->cb));
10385
10386 nla_nest_end(skb, data);
10387 genlmsg_end(skb, hdr);
10388
10389 if (nlhdr->nlmsg_pid) {
10390 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10391 nlhdr->nlmsg_pid);
10392 } else {
10393 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10394 mcgrp = NL80211_MCGRP_VENDOR;
10395
10396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10397 skb, 0, mcgrp, gfp);
10398 }
10399 }
10400 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10401
10402 #ifdef CONFIG_NL80211_TESTMODE
10403 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10404 {
10405 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10406 struct wireless_dev *wdev =
10407 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10408 int err;
10409
10410 if (!rdev->ops->testmode_cmd)
10411 return -EOPNOTSUPP;
10412
10413 if (IS_ERR(wdev)) {
10414 err = PTR_ERR(wdev);
10415 if (err != -EINVAL)
10416 return err;
10417 wdev = NULL;
10418 } else if (wdev->wiphy != &rdev->wiphy) {
10419 return -EINVAL;
10420 }
10421
10422 if (!info->attrs[NL80211_ATTR_TESTDATA])
10423 return -EINVAL;
10424
10425 rdev->cur_cmd_info = info;
10426 err = rdev_testmode_cmd(rdev, wdev,
10427 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10428 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10429 rdev->cur_cmd_info = NULL;
10430
10431 return err;
10432 }
10433
10434 static int nl80211_testmode_dump(struct sk_buff *skb,
10435 struct netlink_callback *cb)
10436 {
10437 struct cfg80211_registered_device *rdev;
10438 struct nlattr **attrbuf = NULL;
10439 int err;
10440 long phy_idx;
10441 void *data = NULL;
10442 int data_len = 0;
10443
10444 rtnl_lock();
10445
10446 if (cb->args[0]) {
10447 /*
10448 * 0 is a valid index, but not valid for args[0],
10449 * so we need to offset by 1.
10450 */
10451 phy_idx = cb->args[0] - 1;
10452
10453 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10454 if (!rdev) {
10455 err = -ENOENT;
10456 goto out_err;
10457 }
10458 } else {
10459 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10460 GFP_KERNEL);
10461 if (!attrbuf) {
10462 err = -ENOMEM;
10463 goto out_err;
10464 }
10465
10466 err = nlmsg_parse_deprecated(cb->nlh,
10467 GENL_HDRLEN + nl80211_fam.hdrsize,
10468 attrbuf, nl80211_fam.maxattr,
10469 nl80211_policy, NULL);
10470 if (err)
10471 goto out_err;
10472
10473 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10474 if (IS_ERR(rdev)) {
10475 err = PTR_ERR(rdev);
10476 goto out_err;
10477 }
10478 phy_idx = rdev->wiphy_idx;
10479
10480 if (attrbuf[NL80211_ATTR_TESTDATA])
10481 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10482 }
10483
10484 if (cb->args[1]) {
10485 data = nla_data((void *)cb->args[1]);
10486 data_len = nla_len((void *)cb->args[1]);
10487 }
10488
10489 if (!rdev->ops->testmode_dump) {
10490 err = -EOPNOTSUPP;
10491 goto out_err;
10492 }
10493
10494 while (1) {
10495 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10496 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10497 NL80211_CMD_TESTMODE);
10498 struct nlattr *tmdata;
10499
10500 if (!hdr)
10501 break;
10502
10503 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10504 genlmsg_cancel(skb, hdr);
10505 break;
10506 }
10507
10508 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10509 if (!tmdata) {
10510 genlmsg_cancel(skb, hdr);
10511 break;
10512 }
10513 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10514 nla_nest_end(skb, tmdata);
10515
10516 if (err == -ENOBUFS || err == -ENOENT) {
10517 genlmsg_cancel(skb, hdr);
10518 break;
10519 } else if (err) {
10520 genlmsg_cancel(skb, hdr);
10521 goto out_err;
10522 }
10523
10524 genlmsg_end(skb, hdr);
10525 }
10526
10527 err = skb->len;
10528 /* see above */
10529 cb->args[0] = phy_idx + 1;
10530 out_err:
10531 kfree(attrbuf);
10532 rtnl_unlock();
10533 return err;
10534 }
10535 #endif
10536
10537 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10538 {
10539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10540 struct net_device *dev = info->user_ptr[1];
10541 struct cfg80211_connect_params connect;
10542 struct wiphy *wiphy;
10543 struct cfg80211_cached_keys *connkeys = NULL;
10544 u32 freq = 0;
10545 int err;
10546
10547 memset(&connect, 0, sizeof(connect));
10548
10549 if (!info->attrs[NL80211_ATTR_SSID] ||
10550 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10551 return -EINVAL;
10552
10553 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10554 connect.auth_type =
10555 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10556 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10557 NL80211_CMD_CONNECT))
10558 return -EINVAL;
10559 } else
10560 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10561
10562 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10563
10564 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10565 !wiphy_ext_feature_isset(&rdev->wiphy,
10566 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10567 return -EINVAL;
10568 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10569
10570 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10571 NL80211_MAX_NR_CIPHER_SUITES);
10572 if (err)
10573 return err;
10574
10575 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10576 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10577 return -EOPNOTSUPP;
10578
10579 wiphy = &rdev->wiphy;
10580
10581 connect.bg_scan_period = -1;
10582 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10583 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10584 connect.bg_scan_period =
10585 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10586 }
10587
10588 if (info->attrs[NL80211_ATTR_MAC])
10589 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10590 else if (info->attrs[NL80211_ATTR_MAC_HINT])
10591 connect.bssid_hint =
10592 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10593 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10594 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10595
10596 if (info->attrs[NL80211_ATTR_IE]) {
10597 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10598 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10599 }
10600
10601 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10602 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10603 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10604 !wiphy_ext_feature_isset(&rdev->wiphy,
10605 NL80211_EXT_FEATURE_MFP_OPTIONAL))
10606 return -EOPNOTSUPP;
10607 } else {
10608 connect.mfp = NL80211_MFP_NO;
10609 }
10610
10611 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10612 connect.prev_bssid =
10613 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10614
10615 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10616 freq = MHZ_TO_KHZ(nla_get_u32(
10617 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10618 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10619 freq +=
10620 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10621
10622 if (freq) {
10623 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10624 if (!connect.channel)
10625 return -EINVAL;
10626 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10627 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10628 freq = MHZ_TO_KHZ(freq);
10629 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10630 if (!connect.channel_hint)
10631 return -EINVAL;
10632 }
10633
10634 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10635 connect.edmg.channels =
10636 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10637
10638 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10639 connect.edmg.bw_config =
10640 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10641 }
10642
10643 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10644 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10645 if (IS_ERR(connkeys))
10646 return PTR_ERR(connkeys);
10647 }
10648
10649 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10650 connect.flags |= ASSOC_REQ_DISABLE_HT;
10651
10652 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10653 memcpy(&connect.ht_capa_mask,
10654 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10655 sizeof(connect.ht_capa_mask));
10656
10657 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10658 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10659 kfree_sensitive(connkeys);
10660 return -EINVAL;
10661 }
10662 memcpy(&connect.ht_capa,
10663 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10664 sizeof(connect.ht_capa));
10665 }
10666
10667 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10668 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10669
10670 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10671 memcpy(&connect.vht_capa_mask,
10672 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10673 sizeof(connect.vht_capa_mask));
10674
10675 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10676 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10677 kfree_sensitive(connkeys);
10678 return -EINVAL;
10679 }
10680 memcpy(&connect.vht_capa,
10681 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10682 sizeof(connect.vht_capa));
10683 }
10684
10685 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10686 if (!((rdev->wiphy.features &
10687 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10688 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10689 !wiphy_ext_feature_isset(&rdev->wiphy,
10690 NL80211_EXT_FEATURE_RRM)) {
10691 kfree_sensitive(connkeys);
10692 return -EINVAL;
10693 }
10694 connect.flags |= ASSOC_REQ_USE_RRM;
10695 }
10696
10697 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10698 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10699 kfree_sensitive(connkeys);
10700 return -EOPNOTSUPP;
10701 }
10702
10703 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10704 /* bss selection makes no sense if bssid is set */
10705 if (connect.bssid) {
10706 kfree_sensitive(connkeys);
10707 return -EINVAL;
10708 }
10709
10710 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10711 wiphy, &connect.bss_select);
10712 if (err) {
10713 kfree_sensitive(connkeys);
10714 return err;
10715 }
10716 }
10717
10718 if (wiphy_ext_feature_isset(&rdev->wiphy,
10719 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10720 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10721 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10722 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10723 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10724 connect.fils_erp_username =
10725 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10726 connect.fils_erp_username_len =
10727 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10728 connect.fils_erp_realm =
10729 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10730 connect.fils_erp_realm_len =
10731 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10732 connect.fils_erp_next_seq_num =
10733 nla_get_u16(
10734 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10735 connect.fils_erp_rrk =
10736 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10737 connect.fils_erp_rrk_len =
10738 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10739 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10740 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10741 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10742 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10743 kfree_sensitive(connkeys);
10744 return -EINVAL;
10745 }
10746
10747 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10748 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10749 kfree_sensitive(connkeys);
10750 GENL_SET_ERR_MSG(info,
10751 "external auth requires connection ownership");
10752 return -EINVAL;
10753 }
10754 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10755 }
10756
10757 wdev_lock(dev->ieee80211_ptr);
10758
10759 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10760 connect.prev_bssid);
10761 if (err)
10762 kfree_sensitive(connkeys);
10763
10764 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10765 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10766 if (connect.bssid)
10767 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10768 connect.bssid, ETH_ALEN);
10769 else
10770 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10771 }
10772
10773 wdev_unlock(dev->ieee80211_ptr);
10774
10775 return err;
10776 }
10777
10778 static int nl80211_update_connect_params(struct sk_buff *skb,
10779 struct genl_info *info)
10780 {
10781 struct cfg80211_connect_params connect = {};
10782 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10783 struct net_device *dev = info->user_ptr[1];
10784 struct wireless_dev *wdev = dev->ieee80211_ptr;
10785 bool fils_sk_offload;
10786 u32 auth_type;
10787 u32 changed = 0;
10788 int ret;
10789
10790 if (!rdev->ops->update_connect_params)
10791 return -EOPNOTSUPP;
10792
10793 if (info->attrs[NL80211_ATTR_IE]) {
10794 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10795 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10796 changed |= UPDATE_ASSOC_IES;
10797 }
10798
10799 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10800 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10801
10802 /*
10803 * when driver supports fils-sk offload all attributes must be
10804 * provided. So the else covers "fils-sk-not-all" and
10805 * "no-fils-sk-any".
10806 */
10807 if (fils_sk_offload &&
10808 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10809 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10810 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10811 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10812 connect.fils_erp_username =
10813 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10814 connect.fils_erp_username_len =
10815 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10816 connect.fils_erp_realm =
10817 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10818 connect.fils_erp_realm_len =
10819 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10820 connect.fils_erp_next_seq_num =
10821 nla_get_u16(
10822 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10823 connect.fils_erp_rrk =
10824 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10825 connect.fils_erp_rrk_len =
10826 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10827 changed |= UPDATE_FILS_ERP_INFO;
10828 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10829 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10830 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10831 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10832 return -EINVAL;
10833 }
10834
10835 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10836 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10837 if (!nl80211_valid_auth_type(rdev, auth_type,
10838 NL80211_CMD_CONNECT))
10839 return -EINVAL;
10840
10841 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10842 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10843 return -EINVAL;
10844
10845 connect.auth_type = auth_type;
10846 changed |= UPDATE_AUTH_TYPE;
10847 }
10848
10849 wdev_lock(dev->ieee80211_ptr);
10850 if (!wdev->current_bss)
10851 ret = -ENOLINK;
10852 else
10853 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10854 wdev_unlock(dev->ieee80211_ptr);
10855
10856 return ret;
10857 }
10858
10859 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10860 {
10861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10862 struct net_device *dev = info->user_ptr[1];
10863 u16 reason;
10864 int ret;
10865
10866 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10867 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10868 return -EPERM;
10869
10870 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10871 reason = WLAN_REASON_DEAUTH_LEAVING;
10872 else
10873 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10874
10875 if (reason == 0)
10876 return -EINVAL;
10877
10878 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10879 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10880 return -EOPNOTSUPP;
10881
10882 wdev_lock(dev->ieee80211_ptr);
10883 ret = cfg80211_disconnect(rdev, dev, reason, true);
10884 wdev_unlock(dev->ieee80211_ptr);
10885 return ret;
10886 }
10887
10888 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10889 {
10890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10891 struct net *net;
10892 int err;
10893
10894 if (info->attrs[NL80211_ATTR_PID]) {
10895 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10896
10897 net = get_net_ns_by_pid(pid);
10898 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10899 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10900
10901 net = get_net_ns_by_fd(fd);
10902 } else {
10903 return -EINVAL;
10904 }
10905
10906 if (IS_ERR(net))
10907 return PTR_ERR(net);
10908
10909 err = 0;
10910
10911 /* check if anything to do */
10912 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10913 err = cfg80211_switch_netns(rdev, net);
10914
10915 put_net(net);
10916 return err;
10917 }
10918
10919 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10920 {
10921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10922 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10923 struct cfg80211_pmksa *pmksa) = NULL;
10924 struct net_device *dev = info->user_ptr[1];
10925 struct cfg80211_pmksa pmksa;
10926
10927 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10928
10929 if (!info->attrs[NL80211_ATTR_PMKID])
10930 return -EINVAL;
10931
10932 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10933
10934 if (info->attrs[NL80211_ATTR_MAC]) {
10935 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10936 } else if (info->attrs[NL80211_ATTR_SSID] &&
10937 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10938 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10939 info->attrs[NL80211_ATTR_PMK])) {
10940 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10941 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10942 pmksa.cache_id =
10943 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10944 } else {
10945 return -EINVAL;
10946 }
10947 if (info->attrs[NL80211_ATTR_PMK]) {
10948 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10949 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10950 }
10951
10952 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10953 pmksa.pmk_lifetime =
10954 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10955
10956 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10957 pmksa.pmk_reauth_threshold =
10958 nla_get_u8(
10959 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10960
10961 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10962 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10963 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10964 wiphy_ext_feature_isset(&rdev->wiphy,
10965 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10966 return -EOPNOTSUPP;
10967
10968 switch (info->genlhdr->cmd) {
10969 case NL80211_CMD_SET_PMKSA:
10970 rdev_ops = rdev->ops->set_pmksa;
10971 break;
10972 case NL80211_CMD_DEL_PMKSA:
10973 rdev_ops = rdev->ops->del_pmksa;
10974 break;
10975 default:
10976 WARN_ON(1);
10977 break;
10978 }
10979
10980 if (!rdev_ops)
10981 return -EOPNOTSUPP;
10982
10983 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10984 }
10985
10986 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10987 {
10988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10989 struct net_device *dev = info->user_ptr[1];
10990
10991 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10992 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10993 return -EOPNOTSUPP;
10994
10995 if (!rdev->ops->flush_pmksa)
10996 return -EOPNOTSUPP;
10997
10998 return rdev_flush_pmksa(rdev, dev);
10999 }
11000
11001 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11002 {
11003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11004 struct net_device *dev = info->user_ptr[1];
11005 u8 action_code, dialog_token;
11006 u32 peer_capability = 0;
11007 u16 status_code;
11008 u8 *peer;
11009 bool initiator;
11010
11011 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11012 !rdev->ops->tdls_mgmt)
11013 return -EOPNOTSUPP;
11014
11015 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11016 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11017 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11018 !info->attrs[NL80211_ATTR_IE] ||
11019 !info->attrs[NL80211_ATTR_MAC])
11020 return -EINVAL;
11021
11022 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11023 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11024 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11025 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11026 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11027 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11028 peer_capability =
11029 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11030
11031 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11032 dialog_token, status_code, peer_capability,
11033 initiator,
11034 nla_data(info->attrs[NL80211_ATTR_IE]),
11035 nla_len(info->attrs[NL80211_ATTR_IE]));
11036 }
11037
11038 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11039 {
11040 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11041 struct net_device *dev = info->user_ptr[1];
11042 enum nl80211_tdls_operation operation;
11043 u8 *peer;
11044
11045 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11046 !rdev->ops->tdls_oper)
11047 return -EOPNOTSUPP;
11048
11049 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11050 !info->attrs[NL80211_ATTR_MAC])
11051 return -EINVAL;
11052
11053 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11054 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11055
11056 return rdev_tdls_oper(rdev, dev, peer, operation);
11057 }
11058
11059 static int nl80211_remain_on_channel(struct sk_buff *skb,
11060 struct genl_info *info)
11061 {
11062 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11063 struct wireless_dev *wdev = info->user_ptr[1];
11064 struct cfg80211_chan_def chandef;
11065 const struct cfg80211_chan_def *compat_chandef;
11066 struct sk_buff *msg;
11067 void *hdr;
11068 u64 cookie;
11069 u32 duration;
11070 int err;
11071
11072 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11073 !info->attrs[NL80211_ATTR_DURATION])
11074 return -EINVAL;
11075
11076 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11077
11078 if (!rdev->ops->remain_on_channel ||
11079 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11080 return -EOPNOTSUPP;
11081
11082 /*
11083 * We should be on that channel for at least a minimum amount of
11084 * time (10ms) but no longer than the driver supports.
11085 */
11086 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11087 duration > rdev->wiphy.max_remain_on_channel_duration)
11088 return -EINVAL;
11089
11090 err = nl80211_parse_chandef(rdev, info, &chandef);
11091 if (err)
11092 return err;
11093
11094 wdev_lock(wdev);
11095 if (!cfg80211_off_channel_oper_allowed(wdev) &&
11096 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11097 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11098 &chandef);
11099 if (compat_chandef != &chandef) {
11100 wdev_unlock(wdev);
11101 return -EBUSY;
11102 }
11103 }
11104 wdev_unlock(wdev);
11105
11106 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11107 if (!msg)
11108 return -ENOMEM;
11109
11110 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11111 NL80211_CMD_REMAIN_ON_CHANNEL);
11112 if (!hdr) {
11113 err = -ENOBUFS;
11114 goto free_msg;
11115 }
11116
11117 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11118 duration, &cookie);
11119
11120 if (err)
11121 goto free_msg;
11122
11123 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11124 NL80211_ATTR_PAD))
11125 goto nla_put_failure;
11126
11127 genlmsg_end(msg, hdr);
11128
11129 return genlmsg_reply(msg, info);
11130
11131 nla_put_failure:
11132 err = -ENOBUFS;
11133 free_msg:
11134 nlmsg_free(msg);
11135 return err;
11136 }
11137
11138 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11139 struct genl_info *info)
11140 {
11141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11142 struct wireless_dev *wdev = info->user_ptr[1];
11143 u64 cookie;
11144
11145 if (!info->attrs[NL80211_ATTR_COOKIE])
11146 return -EINVAL;
11147
11148 if (!rdev->ops->cancel_remain_on_channel)
11149 return -EOPNOTSUPP;
11150
11151 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11152
11153 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11154 }
11155
11156 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11157 struct genl_info *info)
11158 {
11159 struct cfg80211_bitrate_mask mask;
11160 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11161 struct net_device *dev = info->user_ptr[1];
11162 int err;
11163
11164 if (!rdev->ops->set_bitrate_mask)
11165 return -EOPNOTSUPP;
11166
11167 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11168 NL80211_ATTR_TX_RATES, &mask,
11169 dev, true);
11170 if (err)
11171 return err;
11172
11173 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11174 }
11175
11176 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11177 {
11178 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11179 struct wireless_dev *wdev = info->user_ptr[1];
11180 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11181
11182 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11183 return -EINVAL;
11184
11185 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11186 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11187
11188 switch (wdev->iftype) {
11189 case NL80211_IFTYPE_STATION:
11190 case NL80211_IFTYPE_ADHOC:
11191 case NL80211_IFTYPE_P2P_CLIENT:
11192 case NL80211_IFTYPE_AP:
11193 case NL80211_IFTYPE_AP_VLAN:
11194 case NL80211_IFTYPE_MESH_POINT:
11195 case NL80211_IFTYPE_P2P_GO:
11196 case NL80211_IFTYPE_P2P_DEVICE:
11197 break;
11198 case NL80211_IFTYPE_NAN:
11199 default:
11200 return -EOPNOTSUPP;
11201 }
11202
11203 /* not much point in registering if we can't reply */
11204 if (!rdev->ops->mgmt_tx)
11205 return -EOPNOTSUPP;
11206
11207 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11208 !wiphy_ext_feature_isset(&rdev->wiphy,
11209 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11210 GENL_SET_ERR_MSG(info,
11211 "multicast RX registrations are not supported");
11212 return -EOPNOTSUPP;
11213 }
11214
11215 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11216 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11217 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11218 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11219 info->extack);
11220 }
11221
11222 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11223 {
11224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11225 struct wireless_dev *wdev = info->user_ptr[1];
11226 struct cfg80211_chan_def chandef;
11227 int err;
11228 void *hdr = NULL;
11229 u64 cookie;
11230 struct sk_buff *msg = NULL;
11231 struct cfg80211_mgmt_tx_params params = {
11232 .dont_wait_for_ack =
11233 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11234 };
11235
11236 if (!info->attrs[NL80211_ATTR_FRAME])
11237 return -EINVAL;
11238
11239 if (!rdev->ops->mgmt_tx)
11240 return -EOPNOTSUPP;
11241
11242 switch (wdev->iftype) {
11243 case NL80211_IFTYPE_P2P_DEVICE:
11244 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11245 return -EINVAL;
11246 break;
11247 case NL80211_IFTYPE_STATION:
11248 case NL80211_IFTYPE_ADHOC:
11249 case NL80211_IFTYPE_P2P_CLIENT:
11250 case NL80211_IFTYPE_AP:
11251 case NL80211_IFTYPE_AP_VLAN:
11252 case NL80211_IFTYPE_MESH_POINT:
11253 case NL80211_IFTYPE_P2P_GO:
11254 break;
11255 case NL80211_IFTYPE_NAN:
11256 default:
11257 return -EOPNOTSUPP;
11258 }
11259
11260 if (info->attrs[NL80211_ATTR_DURATION]) {
11261 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11262 return -EINVAL;
11263 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11264
11265 /*
11266 * We should wait on the channel for at least a minimum amount
11267 * of time (10ms) but no longer than the driver supports.
11268 */
11269 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11270 params.wait > rdev->wiphy.max_remain_on_channel_duration)
11271 return -EINVAL;
11272 }
11273
11274 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11275
11276 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11277 return -EINVAL;
11278
11279 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11280
11281 /* get the channel if any has been specified, otherwise pass NULL to
11282 * the driver. The latter will use the current one
11283 */
11284 chandef.chan = NULL;
11285 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11286 err = nl80211_parse_chandef(rdev, info, &chandef);
11287 if (err)
11288 return err;
11289 }
11290
11291 if (!chandef.chan && params.offchan)
11292 return -EINVAL;
11293
11294 wdev_lock(wdev);
11295 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11296 wdev_unlock(wdev);
11297 return -EBUSY;
11298 }
11299 wdev_unlock(wdev);
11300
11301 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11302 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11303
11304 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11305 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11306 int i;
11307
11308 if (len % sizeof(u16))
11309 return -EINVAL;
11310
11311 params.n_csa_offsets = len / sizeof(u16);
11312 params.csa_offsets =
11313 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11314
11315 /* check that all the offsets fit the frame */
11316 for (i = 0; i < params.n_csa_offsets; i++) {
11317 if (params.csa_offsets[i] >= params.len)
11318 return -EINVAL;
11319 }
11320 }
11321
11322 if (!params.dont_wait_for_ack) {
11323 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11324 if (!msg)
11325 return -ENOMEM;
11326
11327 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11328 NL80211_CMD_FRAME);
11329 if (!hdr) {
11330 err = -ENOBUFS;
11331 goto free_msg;
11332 }
11333 }
11334
11335 params.chan = chandef.chan;
11336 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11337 if (err)
11338 goto free_msg;
11339
11340 if (msg) {
11341 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11342 NL80211_ATTR_PAD))
11343 goto nla_put_failure;
11344
11345 genlmsg_end(msg, hdr);
11346 return genlmsg_reply(msg, info);
11347 }
11348
11349 return 0;
11350
11351 nla_put_failure:
11352 err = -ENOBUFS;
11353 free_msg:
11354 nlmsg_free(msg);
11355 return err;
11356 }
11357
11358 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11359 {
11360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11361 struct wireless_dev *wdev = info->user_ptr[1];
11362 u64 cookie;
11363
11364 if (!info->attrs[NL80211_ATTR_COOKIE])
11365 return -EINVAL;
11366
11367 if (!rdev->ops->mgmt_tx_cancel_wait)
11368 return -EOPNOTSUPP;
11369
11370 switch (wdev->iftype) {
11371 case NL80211_IFTYPE_STATION:
11372 case NL80211_IFTYPE_ADHOC:
11373 case NL80211_IFTYPE_P2P_CLIENT:
11374 case NL80211_IFTYPE_AP:
11375 case NL80211_IFTYPE_AP_VLAN:
11376 case NL80211_IFTYPE_P2P_GO:
11377 case NL80211_IFTYPE_P2P_DEVICE:
11378 break;
11379 case NL80211_IFTYPE_NAN:
11380 default:
11381 return -EOPNOTSUPP;
11382 }
11383
11384 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11385
11386 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11387 }
11388
11389 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11390 {
11391 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11392 struct wireless_dev *wdev;
11393 struct net_device *dev = info->user_ptr[1];
11394 u8 ps_state;
11395 bool state;
11396 int err;
11397
11398 if (!info->attrs[NL80211_ATTR_PS_STATE])
11399 return -EINVAL;
11400
11401 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11402
11403 wdev = dev->ieee80211_ptr;
11404
11405 if (!rdev->ops->set_power_mgmt)
11406 return -EOPNOTSUPP;
11407
11408 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11409
11410 if (state == wdev->ps)
11411 return 0;
11412
11413 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11414 if (!err)
11415 wdev->ps = state;
11416 return err;
11417 }
11418
11419 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11420 {
11421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11422 enum nl80211_ps_state ps_state;
11423 struct wireless_dev *wdev;
11424 struct net_device *dev = info->user_ptr[1];
11425 struct sk_buff *msg;
11426 void *hdr;
11427 int err;
11428
11429 wdev = dev->ieee80211_ptr;
11430
11431 if (!rdev->ops->set_power_mgmt)
11432 return -EOPNOTSUPP;
11433
11434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11435 if (!msg)
11436 return -ENOMEM;
11437
11438 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11439 NL80211_CMD_GET_POWER_SAVE);
11440 if (!hdr) {
11441 err = -ENOBUFS;
11442 goto free_msg;
11443 }
11444
11445 if (wdev->ps)
11446 ps_state = NL80211_PS_ENABLED;
11447 else
11448 ps_state = NL80211_PS_DISABLED;
11449
11450 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11451 goto nla_put_failure;
11452
11453 genlmsg_end(msg, hdr);
11454 return genlmsg_reply(msg, info);
11455
11456 nla_put_failure:
11457 err = -ENOBUFS;
11458 free_msg:
11459 nlmsg_free(msg);
11460 return err;
11461 }
11462
11463 static const struct nla_policy
11464 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11465 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11466 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11467 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11468 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11469 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11470 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11471 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11472 };
11473
11474 static int nl80211_set_cqm_txe(struct genl_info *info,
11475 u32 rate, u32 pkts, u32 intvl)
11476 {
11477 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11478 struct net_device *dev = info->user_ptr[1];
11479 struct wireless_dev *wdev = dev->ieee80211_ptr;
11480
11481 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11482 return -EINVAL;
11483
11484 if (!rdev->ops->set_cqm_txe_config)
11485 return -EOPNOTSUPP;
11486
11487 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11488 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11489 return -EOPNOTSUPP;
11490
11491 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11492 }
11493
11494 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11495 struct net_device *dev)
11496 {
11497 struct wireless_dev *wdev = dev->ieee80211_ptr;
11498 s32 last, low, high;
11499 u32 hyst;
11500 int i, n, low_index;
11501 int err;
11502
11503 /* RSSI reporting disabled? */
11504 if (!wdev->cqm_config)
11505 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11506
11507 /*
11508 * Obtain current RSSI value if possible, if not and no RSSI threshold
11509 * event has been received yet, we should receive an event after a
11510 * connection is established and enough beacons received to calculate
11511 * the average.
11512 */
11513 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11514 rdev->ops->get_station) {
11515 struct station_info sinfo = {};
11516 u8 *mac_addr;
11517
11518 mac_addr = wdev->current_bss->pub.bssid;
11519
11520 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11521 if (err)
11522 return err;
11523
11524 cfg80211_sinfo_release_content(&sinfo);
11525 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11526 wdev->cqm_config->last_rssi_event_value =
11527 (s8) sinfo.rx_beacon_signal_avg;
11528 }
11529
11530 last = wdev->cqm_config->last_rssi_event_value;
11531 hyst = wdev->cqm_config->rssi_hyst;
11532 n = wdev->cqm_config->n_rssi_thresholds;
11533
11534 for (i = 0; i < n; i++) {
11535 i = array_index_nospec(i, n);
11536 if (last < wdev->cqm_config->rssi_thresholds[i])
11537 break;
11538 }
11539
11540 low_index = i - 1;
11541 if (low_index >= 0) {
11542 low_index = array_index_nospec(low_index, n);
11543 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11544 } else {
11545 low = S32_MIN;
11546 }
11547 if (i < n) {
11548 i = array_index_nospec(i, n);
11549 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11550 } else {
11551 high = S32_MAX;
11552 }
11553
11554 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11555 }
11556
11557 static int nl80211_set_cqm_rssi(struct genl_info *info,
11558 const s32 *thresholds, int n_thresholds,
11559 u32 hysteresis)
11560 {
11561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11562 struct net_device *dev = info->user_ptr[1];
11563 struct wireless_dev *wdev = dev->ieee80211_ptr;
11564 int i, err;
11565 s32 prev = S32_MIN;
11566
11567 /* Check all values negative and sorted */
11568 for (i = 0; i < n_thresholds; i++) {
11569 if (thresholds[i] > 0 || thresholds[i] <= prev)
11570 return -EINVAL;
11571
11572 prev = thresholds[i];
11573 }
11574
11575 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11576 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11577 return -EOPNOTSUPP;
11578
11579 wdev_lock(wdev);
11580 cfg80211_cqm_config_free(wdev);
11581 wdev_unlock(wdev);
11582
11583 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11584 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11585 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11586
11587 return rdev_set_cqm_rssi_config(rdev, dev,
11588 thresholds[0], hysteresis);
11589 }
11590
11591 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11592 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11593 return -EOPNOTSUPP;
11594
11595 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11596 n_thresholds = 0;
11597
11598 wdev_lock(wdev);
11599 if (n_thresholds) {
11600 struct cfg80211_cqm_config *cqm_config;
11601
11602 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11603 n_thresholds * sizeof(s32), GFP_KERNEL);
11604 if (!cqm_config) {
11605 err = -ENOMEM;
11606 goto unlock;
11607 }
11608
11609 cqm_config->rssi_hyst = hysteresis;
11610 cqm_config->n_rssi_thresholds = n_thresholds;
11611 memcpy(cqm_config->rssi_thresholds, thresholds,
11612 n_thresholds * sizeof(s32));
11613
11614 wdev->cqm_config = cqm_config;
11615 }
11616
11617 err = cfg80211_cqm_rssi_update(rdev, dev);
11618
11619 unlock:
11620 wdev_unlock(wdev);
11621
11622 return err;
11623 }
11624
11625 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11626 {
11627 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11628 struct nlattr *cqm;
11629 int err;
11630
11631 cqm = info->attrs[NL80211_ATTR_CQM];
11632 if (!cqm)
11633 return -EINVAL;
11634
11635 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11636 nl80211_attr_cqm_policy,
11637 info->extack);
11638 if (err)
11639 return err;
11640
11641 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11642 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11643 const s32 *thresholds =
11644 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11645 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11646 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11647
11648 if (len % 4)
11649 return -EINVAL;
11650
11651 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11652 hysteresis);
11653 }
11654
11655 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11656 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11657 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11658 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11659 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11660 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11661
11662 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11663 }
11664
11665 return -EINVAL;
11666 }
11667
11668 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11669 {
11670 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11671 struct net_device *dev = info->user_ptr[1];
11672 struct ocb_setup setup = {};
11673 int err;
11674
11675 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11676 if (err)
11677 return err;
11678
11679 return cfg80211_join_ocb(rdev, dev, &setup);
11680 }
11681
11682 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11683 {
11684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11685 struct net_device *dev = info->user_ptr[1];
11686
11687 return cfg80211_leave_ocb(rdev, dev);
11688 }
11689
11690 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11691 {
11692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11693 struct net_device *dev = info->user_ptr[1];
11694 struct mesh_config cfg;
11695 struct mesh_setup setup;
11696 int err;
11697
11698 /* start with default */
11699 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11700 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11701
11702 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11703 /* and parse parameters if given */
11704 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11705 if (err)
11706 return err;
11707 }
11708
11709 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11710 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11711 return -EINVAL;
11712
11713 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11714 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11715
11716 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11717 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11718 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11719 return -EINVAL;
11720
11721 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11722 setup.beacon_interval =
11723 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11724
11725 err = cfg80211_validate_beacon_int(rdev,
11726 NL80211_IFTYPE_MESH_POINT,
11727 setup.beacon_interval);
11728 if (err)
11729 return err;
11730 }
11731
11732 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11733 setup.dtim_period =
11734 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11735 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11736 return -EINVAL;
11737 }
11738
11739 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11740 /* parse additional setup parameters if given */
11741 err = nl80211_parse_mesh_setup(info, &setup);
11742 if (err)
11743 return err;
11744 }
11745
11746 if (setup.user_mpm)
11747 cfg.auto_open_plinks = false;
11748
11749 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11750 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11751 if (err)
11752 return err;
11753 } else {
11754 /* __cfg80211_join_mesh() will sort it out */
11755 setup.chandef.chan = NULL;
11756 }
11757
11758 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11759 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11760 int n_rates =
11761 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11762 struct ieee80211_supported_band *sband;
11763
11764 if (!setup.chandef.chan)
11765 return -EINVAL;
11766
11767 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11768
11769 err = ieee80211_get_ratemask(sband, rates, n_rates,
11770 &setup.basic_rates);
11771 if (err)
11772 return err;
11773 }
11774
11775 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11776 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11777 NL80211_ATTR_TX_RATES,
11778 &setup.beacon_rate,
11779 dev, false);
11780 if (err)
11781 return err;
11782
11783 if (!setup.chandef.chan)
11784 return -EINVAL;
11785
11786 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11787 &setup.beacon_rate);
11788 if (err)
11789 return err;
11790 }
11791
11792 setup.userspace_handles_dfs =
11793 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11794
11795 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11796 int r = validate_pae_over_nl80211(rdev, info);
11797
11798 if (r < 0)
11799 return r;
11800
11801 setup.control_port_over_nl80211 = true;
11802 }
11803
11804 wdev_lock(dev->ieee80211_ptr);
11805 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11806 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11807 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11808 wdev_unlock(dev->ieee80211_ptr);
11809
11810 return err;
11811 }
11812
11813 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11814 {
11815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11816 struct net_device *dev = info->user_ptr[1];
11817
11818 return cfg80211_leave_mesh(rdev, dev);
11819 }
11820
11821 #ifdef CONFIG_PM
11822 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11823 struct cfg80211_registered_device *rdev)
11824 {
11825 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11826 struct nlattr *nl_pats, *nl_pat;
11827 int i, pat_len;
11828
11829 if (!wowlan->n_patterns)
11830 return 0;
11831
11832 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11833 if (!nl_pats)
11834 return -ENOBUFS;
11835
11836 for (i = 0; i < wowlan->n_patterns; i++) {
11837 nl_pat = nla_nest_start_noflag(msg, i + 1);
11838 if (!nl_pat)
11839 return -ENOBUFS;
11840 pat_len = wowlan->patterns[i].pattern_len;
11841 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11842 wowlan->patterns[i].mask) ||
11843 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11844 wowlan->patterns[i].pattern) ||
11845 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11846 wowlan->patterns[i].pkt_offset))
11847 return -ENOBUFS;
11848 nla_nest_end(msg, nl_pat);
11849 }
11850 nla_nest_end(msg, nl_pats);
11851
11852 return 0;
11853 }
11854
11855 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11856 struct cfg80211_wowlan_tcp *tcp)
11857 {
11858 struct nlattr *nl_tcp;
11859
11860 if (!tcp)
11861 return 0;
11862
11863 nl_tcp = nla_nest_start_noflag(msg,
11864 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11865 if (!nl_tcp)
11866 return -ENOBUFS;
11867
11868 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11869 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11870 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11871 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11872 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11873 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11874 tcp->payload_len, tcp->payload) ||
11875 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11876 tcp->data_interval) ||
11877 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11878 tcp->wake_len, tcp->wake_data) ||
11879 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11880 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11881 return -ENOBUFS;
11882
11883 if (tcp->payload_seq.len &&
11884 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11885 sizeof(tcp->payload_seq), &tcp->payload_seq))
11886 return -ENOBUFS;
11887
11888 if (tcp->payload_tok.len &&
11889 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11890 sizeof(tcp->payload_tok) + tcp->tokens_size,
11891 &tcp->payload_tok))
11892 return -ENOBUFS;
11893
11894 nla_nest_end(msg, nl_tcp);
11895
11896 return 0;
11897 }
11898
11899 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11900 struct cfg80211_sched_scan_request *req)
11901 {
11902 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11903 int i;
11904
11905 if (!req)
11906 return 0;
11907
11908 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11909 if (!nd)
11910 return -ENOBUFS;
11911
11912 if (req->n_scan_plans == 1 &&
11913 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11914 req->scan_plans[0].interval * 1000))
11915 return -ENOBUFS;
11916
11917 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11918 return -ENOBUFS;
11919
11920 if (req->relative_rssi_set) {
11921 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11922
11923 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11924 req->relative_rssi))
11925 return -ENOBUFS;
11926
11927 rssi_adjust.band = req->rssi_adjust.band;
11928 rssi_adjust.delta = req->rssi_adjust.delta;
11929 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11930 sizeof(rssi_adjust), &rssi_adjust))
11931 return -ENOBUFS;
11932 }
11933
11934 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11935 if (!freqs)
11936 return -ENOBUFS;
11937
11938 for (i = 0; i < req->n_channels; i++) {
11939 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11940 return -ENOBUFS;
11941 }
11942
11943 nla_nest_end(msg, freqs);
11944
11945 if (req->n_match_sets) {
11946 matches = nla_nest_start_noflag(msg,
11947 NL80211_ATTR_SCHED_SCAN_MATCH);
11948 if (!matches)
11949 return -ENOBUFS;
11950
11951 for (i = 0; i < req->n_match_sets; i++) {
11952 match = nla_nest_start_noflag(msg, i);
11953 if (!match)
11954 return -ENOBUFS;
11955
11956 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11957 req->match_sets[i].ssid.ssid_len,
11958 req->match_sets[i].ssid.ssid))
11959 return -ENOBUFS;
11960 nla_nest_end(msg, match);
11961 }
11962 nla_nest_end(msg, matches);
11963 }
11964
11965 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11966 if (!scan_plans)
11967 return -ENOBUFS;
11968
11969 for (i = 0; i < req->n_scan_plans; i++) {
11970 scan_plan = nla_nest_start_noflag(msg, i + 1);
11971 if (!scan_plan)
11972 return -ENOBUFS;
11973
11974 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11975 req->scan_plans[i].interval) ||
11976 (req->scan_plans[i].iterations &&
11977 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11978 req->scan_plans[i].iterations)))
11979 return -ENOBUFS;
11980 nla_nest_end(msg, scan_plan);
11981 }
11982 nla_nest_end(msg, scan_plans);
11983
11984 nla_nest_end(msg, nd);
11985
11986 return 0;
11987 }
11988
11989 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11990 {
11991 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11992 struct sk_buff *msg;
11993 void *hdr;
11994 u32 size = NLMSG_DEFAULT_SIZE;
11995
11996 if (!rdev->wiphy.wowlan)
11997 return -EOPNOTSUPP;
11998
11999 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12000 /* adjust size to have room for all the data */
12001 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12002 rdev->wiphy.wowlan_config->tcp->payload_len +
12003 rdev->wiphy.wowlan_config->tcp->wake_len +
12004 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12005 }
12006
12007 msg = nlmsg_new(size, GFP_KERNEL);
12008 if (!msg)
12009 return -ENOMEM;
12010
12011 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12012 NL80211_CMD_GET_WOWLAN);
12013 if (!hdr)
12014 goto nla_put_failure;
12015
12016 if (rdev->wiphy.wowlan_config) {
12017 struct nlattr *nl_wowlan;
12018
12019 nl_wowlan = nla_nest_start_noflag(msg,
12020 NL80211_ATTR_WOWLAN_TRIGGERS);
12021 if (!nl_wowlan)
12022 goto nla_put_failure;
12023
12024 if ((rdev->wiphy.wowlan_config->any &&
12025 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12026 (rdev->wiphy.wowlan_config->disconnect &&
12027 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12028 (rdev->wiphy.wowlan_config->magic_pkt &&
12029 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12030 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12031 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12032 (rdev->wiphy.wowlan_config->eap_identity_req &&
12033 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12034 (rdev->wiphy.wowlan_config->four_way_handshake &&
12035 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12036 (rdev->wiphy.wowlan_config->rfkill_release &&
12037 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12038 goto nla_put_failure;
12039
12040 if (nl80211_send_wowlan_patterns(msg, rdev))
12041 goto nla_put_failure;
12042
12043 if (nl80211_send_wowlan_tcp(msg,
12044 rdev->wiphy.wowlan_config->tcp))
12045 goto nla_put_failure;
12046
12047 if (nl80211_send_wowlan_nd(
12048 msg,
12049 rdev->wiphy.wowlan_config->nd_config))
12050 goto nla_put_failure;
12051
12052 nla_nest_end(msg, nl_wowlan);
12053 }
12054
12055 genlmsg_end(msg, hdr);
12056 return genlmsg_reply(msg, info);
12057
12058 nla_put_failure:
12059 nlmsg_free(msg);
12060 return -ENOBUFS;
12061 }
12062
12063 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12064 struct nlattr *attr,
12065 struct cfg80211_wowlan *trig)
12066 {
12067 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12068 struct cfg80211_wowlan_tcp *cfg;
12069 struct nl80211_wowlan_tcp_data_token *tok = NULL;
12070 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12071 u32 size;
12072 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12073 int err, port;
12074
12075 if (!rdev->wiphy.wowlan->tcp)
12076 return -EINVAL;
12077
12078 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12079 nl80211_wowlan_tcp_policy, NULL);
12080 if (err)
12081 return err;
12082
12083 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12084 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12085 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12086 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12087 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12088 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12089 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12090 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12091 return -EINVAL;
12092
12093 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12094 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12095 return -EINVAL;
12096
12097 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12098 rdev->wiphy.wowlan->tcp->data_interval_max ||
12099 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12100 return -EINVAL;
12101
12102 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12103 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12104 return -EINVAL;
12105
12106 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12107 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12108 return -EINVAL;
12109
12110 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12111 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12112
12113 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12114 tokens_size = tokln - sizeof(*tok);
12115
12116 if (!tok->len || tokens_size % tok->len)
12117 return -EINVAL;
12118 if (!rdev->wiphy.wowlan->tcp->tok)
12119 return -EINVAL;
12120 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12121 return -EINVAL;
12122 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12123 return -EINVAL;
12124 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12125 return -EINVAL;
12126 if (tok->offset + tok->len > data_size)
12127 return -EINVAL;
12128 }
12129
12130 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12131 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12132 if (!rdev->wiphy.wowlan->tcp->seq)
12133 return -EINVAL;
12134 if (seq->len == 0 || seq->len > 4)
12135 return -EINVAL;
12136 if (seq->len + seq->offset > data_size)
12137 return -EINVAL;
12138 }
12139
12140 size = sizeof(*cfg);
12141 size += data_size;
12142 size += wake_size + wake_mask_size;
12143 size += tokens_size;
12144
12145 cfg = kzalloc(size, GFP_KERNEL);
12146 if (!cfg)
12147 return -ENOMEM;
12148 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12149 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12150 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12151 ETH_ALEN);
12152 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12153 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12154 else
12155 port = 0;
12156 #ifdef CONFIG_INET
12157 /* allocate a socket and port for it and use it */
12158 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12159 IPPROTO_TCP, &cfg->sock, 1);
12160 if (err) {
12161 kfree(cfg);
12162 return err;
12163 }
12164 if (inet_csk_get_port(cfg->sock->sk, port)) {
12165 sock_release(cfg->sock);
12166 kfree(cfg);
12167 return -EADDRINUSE;
12168 }
12169 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12170 #else
12171 if (!port) {
12172 kfree(cfg);
12173 return -EINVAL;
12174 }
12175 cfg->src_port = port;
12176 #endif
12177
12178 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12179 cfg->payload_len = data_size;
12180 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12181 memcpy((void *)cfg->payload,
12182 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12183 data_size);
12184 if (seq)
12185 cfg->payload_seq = *seq;
12186 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12187 cfg->wake_len = wake_size;
12188 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12189 memcpy((void *)cfg->wake_data,
12190 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12191 wake_size);
12192 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12193 data_size + wake_size;
12194 memcpy((void *)cfg->wake_mask,
12195 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12196 wake_mask_size);
12197 if (tok) {
12198 cfg->tokens_size = tokens_size;
12199 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12200 }
12201
12202 trig->tcp = cfg;
12203
12204 return 0;
12205 }
12206
12207 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12208 const struct wiphy_wowlan_support *wowlan,
12209 struct nlattr *attr,
12210 struct cfg80211_wowlan *trig)
12211 {
12212 struct nlattr **tb;
12213 int err;
12214
12215 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12216 if (!tb)
12217 return -ENOMEM;
12218
12219 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12220 err = -EOPNOTSUPP;
12221 goto out;
12222 }
12223
12224 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12225 nl80211_policy, NULL);
12226 if (err)
12227 goto out;
12228
12229 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12230 wowlan->max_nd_match_sets);
12231 err = PTR_ERR_OR_ZERO(trig->nd_config);
12232 if (err)
12233 trig->nd_config = NULL;
12234
12235 out:
12236 kfree(tb);
12237 return err;
12238 }
12239
12240 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12241 {
12242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12243 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12244 struct cfg80211_wowlan new_triggers = {};
12245 struct cfg80211_wowlan *ntrig;
12246 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12247 int err, i;
12248 bool prev_enabled = rdev->wiphy.wowlan_config;
12249 bool regular = false;
12250
12251 if (!wowlan)
12252 return -EOPNOTSUPP;
12253
12254 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12255 cfg80211_rdev_free_wowlan(rdev);
12256 rdev->wiphy.wowlan_config = NULL;
12257 goto set_wakeup;
12258 }
12259
12260 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12261 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12262 nl80211_wowlan_policy, info->extack);
12263 if (err)
12264 return err;
12265
12266 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12267 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12268 return -EINVAL;
12269 new_triggers.any = true;
12270 }
12271
12272 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12273 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12274 return -EINVAL;
12275 new_triggers.disconnect = true;
12276 regular = true;
12277 }
12278
12279 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12280 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12281 return -EINVAL;
12282 new_triggers.magic_pkt = true;
12283 regular = true;
12284 }
12285
12286 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12287 return -EINVAL;
12288
12289 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12290 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12291 return -EINVAL;
12292 new_triggers.gtk_rekey_failure = true;
12293 regular = true;
12294 }
12295
12296 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12297 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12298 return -EINVAL;
12299 new_triggers.eap_identity_req = true;
12300 regular = true;
12301 }
12302
12303 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12304 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12305 return -EINVAL;
12306 new_triggers.four_way_handshake = true;
12307 regular = true;
12308 }
12309
12310 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12311 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12312 return -EINVAL;
12313 new_triggers.rfkill_release = true;
12314 regular = true;
12315 }
12316
12317 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12318 struct nlattr *pat;
12319 int n_patterns = 0;
12320 int rem, pat_len, mask_len, pkt_offset;
12321 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12322
12323 regular = true;
12324
12325 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12326 rem)
12327 n_patterns++;
12328 if (n_patterns > wowlan->n_patterns)
12329 return -EINVAL;
12330
12331 new_triggers.patterns = kcalloc(n_patterns,
12332 sizeof(new_triggers.patterns[0]),
12333 GFP_KERNEL);
12334 if (!new_triggers.patterns)
12335 return -ENOMEM;
12336
12337 new_triggers.n_patterns = n_patterns;
12338 i = 0;
12339
12340 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12341 rem) {
12342 u8 *mask_pat;
12343
12344 err = nla_parse_nested_deprecated(pat_tb,
12345 MAX_NL80211_PKTPAT,
12346 pat,
12347 nl80211_packet_pattern_policy,
12348 info->extack);
12349 if (err)
12350 goto error;
12351
12352 err = -EINVAL;
12353 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12354 !pat_tb[NL80211_PKTPAT_PATTERN])
12355 goto error;
12356 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12357 mask_len = DIV_ROUND_UP(pat_len, 8);
12358 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12359 goto error;
12360 if (pat_len > wowlan->pattern_max_len ||
12361 pat_len < wowlan->pattern_min_len)
12362 goto error;
12363
12364 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12365 pkt_offset = 0;
12366 else
12367 pkt_offset = nla_get_u32(
12368 pat_tb[NL80211_PKTPAT_OFFSET]);
12369 if (pkt_offset > wowlan->max_pkt_offset)
12370 goto error;
12371 new_triggers.patterns[i].pkt_offset = pkt_offset;
12372
12373 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12374 if (!mask_pat) {
12375 err = -ENOMEM;
12376 goto error;
12377 }
12378 new_triggers.patterns[i].mask = mask_pat;
12379 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12380 mask_len);
12381 mask_pat += mask_len;
12382 new_triggers.patterns[i].pattern = mask_pat;
12383 new_triggers.patterns[i].pattern_len = pat_len;
12384 memcpy(mask_pat,
12385 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12386 pat_len);
12387 i++;
12388 }
12389 }
12390
12391 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12392 regular = true;
12393 err = nl80211_parse_wowlan_tcp(
12394 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12395 &new_triggers);
12396 if (err)
12397 goto error;
12398 }
12399
12400 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12401 regular = true;
12402 err = nl80211_parse_wowlan_nd(
12403 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12404 &new_triggers);
12405 if (err)
12406 goto error;
12407 }
12408
12409 /* The 'any' trigger means the device continues operating more or less
12410 * as in its normal operation mode and wakes up the host on most of the
12411 * normal interrupts (like packet RX, ...)
12412 * It therefore makes little sense to combine with the more constrained
12413 * wakeup trigger modes.
12414 */
12415 if (new_triggers.any && regular) {
12416 err = -EINVAL;
12417 goto error;
12418 }
12419
12420 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12421 if (!ntrig) {
12422 err = -ENOMEM;
12423 goto error;
12424 }
12425 cfg80211_rdev_free_wowlan(rdev);
12426 rdev->wiphy.wowlan_config = ntrig;
12427
12428 set_wakeup:
12429 if (rdev->ops->set_wakeup &&
12430 prev_enabled != !!rdev->wiphy.wowlan_config)
12431 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12432
12433 return 0;
12434 error:
12435 for (i = 0; i < new_triggers.n_patterns; i++)
12436 kfree(new_triggers.patterns[i].mask);
12437 kfree(new_triggers.patterns);
12438 if (new_triggers.tcp && new_triggers.tcp->sock)
12439 sock_release(new_triggers.tcp->sock);
12440 kfree(new_triggers.tcp);
12441 kfree(new_triggers.nd_config);
12442 return err;
12443 }
12444 #endif
12445
12446 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12447 struct cfg80211_registered_device *rdev)
12448 {
12449 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12450 int i, j, pat_len;
12451 struct cfg80211_coalesce_rules *rule;
12452
12453 if (!rdev->coalesce->n_rules)
12454 return 0;
12455
12456 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12457 if (!nl_rules)
12458 return -ENOBUFS;
12459
12460 for (i = 0; i < rdev->coalesce->n_rules; i++) {
12461 nl_rule = nla_nest_start_noflag(msg, i + 1);
12462 if (!nl_rule)
12463 return -ENOBUFS;
12464
12465 rule = &rdev->coalesce->rules[i];
12466 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12467 rule->delay))
12468 return -ENOBUFS;
12469
12470 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12471 rule->condition))
12472 return -ENOBUFS;
12473
12474 nl_pats = nla_nest_start_noflag(msg,
12475 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12476 if (!nl_pats)
12477 return -ENOBUFS;
12478
12479 for (j = 0; j < rule->n_patterns; j++) {
12480 nl_pat = nla_nest_start_noflag(msg, j + 1);
12481 if (!nl_pat)
12482 return -ENOBUFS;
12483 pat_len = rule->patterns[j].pattern_len;
12484 if (nla_put(msg, NL80211_PKTPAT_MASK,
12485 DIV_ROUND_UP(pat_len, 8),
12486 rule->patterns[j].mask) ||
12487 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12488 rule->patterns[j].pattern) ||
12489 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12490 rule->patterns[j].pkt_offset))
12491 return -ENOBUFS;
12492 nla_nest_end(msg, nl_pat);
12493 }
12494 nla_nest_end(msg, nl_pats);
12495 nla_nest_end(msg, nl_rule);
12496 }
12497 nla_nest_end(msg, nl_rules);
12498
12499 return 0;
12500 }
12501
12502 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12503 {
12504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12505 struct sk_buff *msg;
12506 void *hdr;
12507
12508 if (!rdev->wiphy.coalesce)
12509 return -EOPNOTSUPP;
12510
12511 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12512 if (!msg)
12513 return -ENOMEM;
12514
12515 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12516 NL80211_CMD_GET_COALESCE);
12517 if (!hdr)
12518 goto nla_put_failure;
12519
12520 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12521 goto nla_put_failure;
12522
12523 genlmsg_end(msg, hdr);
12524 return genlmsg_reply(msg, info);
12525
12526 nla_put_failure:
12527 nlmsg_free(msg);
12528 return -ENOBUFS;
12529 }
12530
12531 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12532 {
12533 struct cfg80211_coalesce *coalesce = rdev->coalesce;
12534 int i, j;
12535 struct cfg80211_coalesce_rules *rule;
12536
12537 if (!coalesce)
12538 return;
12539
12540 for (i = 0; i < coalesce->n_rules; i++) {
12541 rule = &coalesce->rules[i];
12542 for (j = 0; j < rule->n_patterns; j++)
12543 kfree(rule->patterns[j].mask);
12544 kfree(rule->patterns);
12545 }
12546 kfree(coalesce->rules);
12547 kfree(coalesce);
12548 rdev->coalesce = NULL;
12549 }
12550
12551 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12552 struct nlattr *rule,
12553 struct cfg80211_coalesce_rules *new_rule)
12554 {
12555 int err, i;
12556 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12557 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12558 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12559 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12560
12561 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12562 rule, nl80211_coalesce_policy, NULL);
12563 if (err)
12564 return err;
12565
12566 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12567 new_rule->delay =
12568 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12569 if (new_rule->delay > coalesce->max_delay)
12570 return -EINVAL;
12571
12572 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12573 new_rule->condition =
12574 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12575
12576 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12577 return -EINVAL;
12578
12579 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12580 rem)
12581 n_patterns++;
12582 if (n_patterns > coalesce->n_patterns)
12583 return -EINVAL;
12584
12585 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12586 GFP_KERNEL);
12587 if (!new_rule->patterns)
12588 return -ENOMEM;
12589
12590 new_rule->n_patterns = n_patterns;
12591 i = 0;
12592
12593 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12594 rem) {
12595 u8 *mask_pat;
12596
12597 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12598 pat,
12599 nl80211_packet_pattern_policy,
12600 NULL);
12601 if (err)
12602 return err;
12603
12604 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12605 !pat_tb[NL80211_PKTPAT_PATTERN])
12606 return -EINVAL;
12607 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12608 mask_len = DIV_ROUND_UP(pat_len, 8);
12609 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12610 return -EINVAL;
12611 if (pat_len > coalesce->pattern_max_len ||
12612 pat_len < coalesce->pattern_min_len)
12613 return -EINVAL;
12614
12615 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12616 pkt_offset = 0;
12617 else
12618 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12619 if (pkt_offset > coalesce->max_pkt_offset)
12620 return -EINVAL;
12621 new_rule->patterns[i].pkt_offset = pkt_offset;
12622
12623 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12624 if (!mask_pat)
12625 return -ENOMEM;
12626
12627 new_rule->patterns[i].mask = mask_pat;
12628 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12629 mask_len);
12630
12631 mask_pat += mask_len;
12632 new_rule->patterns[i].pattern = mask_pat;
12633 new_rule->patterns[i].pattern_len = pat_len;
12634 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12635 pat_len);
12636 i++;
12637 }
12638
12639 return 0;
12640 }
12641
12642 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12643 {
12644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12645 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12646 struct cfg80211_coalesce new_coalesce = {};
12647 struct cfg80211_coalesce *n_coalesce;
12648 int err, rem_rule, n_rules = 0, i, j;
12649 struct nlattr *rule;
12650 struct cfg80211_coalesce_rules *tmp_rule;
12651
12652 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12653 return -EOPNOTSUPP;
12654
12655 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12656 cfg80211_rdev_free_coalesce(rdev);
12657 rdev_set_coalesce(rdev, NULL);
12658 return 0;
12659 }
12660
12661 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12662 rem_rule)
12663 n_rules++;
12664 if (n_rules > coalesce->n_rules)
12665 return -EINVAL;
12666
12667 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12668 GFP_KERNEL);
12669 if (!new_coalesce.rules)
12670 return -ENOMEM;
12671
12672 new_coalesce.n_rules = n_rules;
12673 i = 0;
12674
12675 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12676 rem_rule) {
12677 err = nl80211_parse_coalesce_rule(rdev, rule,
12678 &new_coalesce.rules[i]);
12679 if (err)
12680 goto error;
12681
12682 i++;
12683 }
12684
12685 err = rdev_set_coalesce(rdev, &new_coalesce);
12686 if (err)
12687 goto error;
12688
12689 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12690 if (!n_coalesce) {
12691 err = -ENOMEM;
12692 goto error;
12693 }
12694 cfg80211_rdev_free_coalesce(rdev);
12695 rdev->coalesce = n_coalesce;
12696
12697 return 0;
12698 error:
12699 for (i = 0; i < new_coalesce.n_rules; i++) {
12700 tmp_rule = &new_coalesce.rules[i];
12701 for (j = 0; j < tmp_rule->n_patterns; j++)
12702 kfree(tmp_rule->patterns[j].mask);
12703 kfree(tmp_rule->patterns);
12704 }
12705 kfree(new_coalesce.rules);
12706
12707 return err;
12708 }
12709
12710 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12711 {
12712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12713 struct net_device *dev = info->user_ptr[1];
12714 struct wireless_dev *wdev = dev->ieee80211_ptr;
12715 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12716 struct cfg80211_gtk_rekey_data rekey_data = {};
12717 int err;
12718
12719 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12720 return -EINVAL;
12721
12722 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12723 info->attrs[NL80211_ATTR_REKEY_DATA],
12724 nl80211_rekey_policy, info->extack);
12725 if (err)
12726 return err;
12727
12728 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12729 !tb[NL80211_REKEY_DATA_KCK])
12730 return -EINVAL;
12731 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12732 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12733 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12734 return -ERANGE;
12735 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12736 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12737 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12738 return -ERANGE;
12739
12740 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12741 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12742 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12743 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12744 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12745 if (tb[NL80211_REKEY_DATA_AKM])
12746 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12747
12748 wdev_lock(wdev);
12749 if (!wdev->current_bss) {
12750 err = -ENOTCONN;
12751 goto out;
12752 }
12753
12754 if (!rdev->ops->set_rekey_data) {
12755 err = -EOPNOTSUPP;
12756 goto out;
12757 }
12758
12759 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12760 out:
12761 wdev_unlock(wdev);
12762 return err;
12763 }
12764
12765 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12766 struct genl_info *info)
12767 {
12768 struct net_device *dev = info->user_ptr[1];
12769 struct wireless_dev *wdev = dev->ieee80211_ptr;
12770
12771 if (wdev->iftype != NL80211_IFTYPE_AP &&
12772 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12773 return -EINVAL;
12774
12775 if (wdev->ap_unexpected_nlportid)
12776 return -EBUSY;
12777
12778 wdev->ap_unexpected_nlportid = info->snd_portid;
12779 return 0;
12780 }
12781
12782 static int nl80211_probe_client(struct sk_buff *skb,
12783 struct genl_info *info)
12784 {
12785 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12786 struct net_device *dev = info->user_ptr[1];
12787 struct wireless_dev *wdev = dev->ieee80211_ptr;
12788 struct sk_buff *msg;
12789 void *hdr;
12790 const u8 *addr;
12791 u64 cookie;
12792 int err;
12793
12794 if (wdev->iftype != NL80211_IFTYPE_AP &&
12795 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12796 return -EOPNOTSUPP;
12797
12798 if (!info->attrs[NL80211_ATTR_MAC])
12799 return -EINVAL;
12800
12801 if (!rdev->ops->probe_client)
12802 return -EOPNOTSUPP;
12803
12804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12805 if (!msg)
12806 return -ENOMEM;
12807
12808 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12809 NL80211_CMD_PROBE_CLIENT);
12810 if (!hdr) {
12811 err = -ENOBUFS;
12812 goto free_msg;
12813 }
12814
12815 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12816
12817 err = rdev_probe_client(rdev, dev, addr, &cookie);
12818 if (err)
12819 goto free_msg;
12820
12821 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12822 NL80211_ATTR_PAD))
12823 goto nla_put_failure;
12824
12825 genlmsg_end(msg, hdr);
12826
12827 return genlmsg_reply(msg, info);
12828
12829 nla_put_failure:
12830 err = -ENOBUFS;
12831 free_msg:
12832 nlmsg_free(msg);
12833 return err;
12834 }
12835
12836 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12837 {
12838 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12839 struct cfg80211_beacon_registration *reg, *nreg;
12840 int rv;
12841
12842 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12843 return -EOPNOTSUPP;
12844
12845 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12846 if (!nreg)
12847 return -ENOMEM;
12848
12849 /* First, check if already registered. */
12850 spin_lock_bh(&rdev->beacon_registrations_lock);
12851 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12852 if (reg->nlportid == info->snd_portid) {
12853 rv = -EALREADY;
12854 goto out_err;
12855 }
12856 }
12857 /* Add it to the list */
12858 nreg->nlportid = info->snd_portid;
12859 list_add(&nreg->list, &rdev->beacon_registrations);
12860
12861 spin_unlock_bh(&rdev->beacon_registrations_lock);
12862
12863 return 0;
12864 out_err:
12865 spin_unlock_bh(&rdev->beacon_registrations_lock);
12866 kfree(nreg);
12867 return rv;
12868 }
12869
12870 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12871 {
12872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12873 struct wireless_dev *wdev = info->user_ptr[1];
12874 int err;
12875
12876 if (!rdev->ops->start_p2p_device)
12877 return -EOPNOTSUPP;
12878
12879 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12880 return -EOPNOTSUPP;
12881
12882 if (wdev_running(wdev))
12883 return 0;
12884
12885 if (rfkill_blocked(rdev->rfkill))
12886 return -ERFKILL;
12887
12888 err = rdev_start_p2p_device(rdev, wdev);
12889 if (err)
12890 return err;
12891
12892 wdev->is_running = true;
12893 rdev->opencount++;
12894
12895 return 0;
12896 }
12897
12898 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12899 {
12900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12901 struct wireless_dev *wdev = info->user_ptr[1];
12902
12903 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12904 return -EOPNOTSUPP;
12905
12906 if (!rdev->ops->stop_p2p_device)
12907 return -EOPNOTSUPP;
12908
12909 cfg80211_stop_p2p_device(rdev, wdev);
12910
12911 return 0;
12912 }
12913
12914 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12915 {
12916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12917 struct wireless_dev *wdev = info->user_ptr[1];
12918 struct cfg80211_nan_conf conf = {};
12919 int err;
12920
12921 if (wdev->iftype != NL80211_IFTYPE_NAN)
12922 return -EOPNOTSUPP;
12923
12924 if (wdev_running(wdev))
12925 return -EEXIST;
12926
12927 if (rfkill_blocked(rdev->rfkill))
12928 return -ERFKILL;
12929
12930 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12931 return -EINVAL;
12932
12933 conf.master_pref =
12934 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12935
12936 if (info->attrs[NL80211_ATTR_BANDS]) {
12937 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12938
12939 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12940 return -EOPNOTSUPP;
12941
12942 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12943 return -EINVAL;
12944
12945 conf.bands = bands;
12946 }
12947
12948 err = rdev_start_nan(rdev, wdev, &conf);
12949 if (err)
12950 return err;
12951
12952 wdev->is_running = true;
12953 rdev->opencount++;
12954
12955 return 0;
12956 }
12957
12958 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12959 {
12960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12961 struct wireless_dev *wdev = info->user_ptr[1];
12962
12963 if (wdev->iftype != NL80211_IFTYPE_NAN)
12964 return -EOPNOTSUPP;
12965
12966 cfg80211_stop_nan(rdev, wdev);
12967
12968 return 0;
12969 }
12970
12971 static int validate_nan_filter(struct nlattr *filter_attr)
12972 {
12973 struct nlattr *attr;
12974 int len = 0, n_entries = 0, rem;
12975
12976 nla_for_each_nested(attr, filter_attr, rem) {
12977 len += nla_len(attr);
12978 n_entries++;
12979 }
12980
12981 if (len >= U8_MAX)
12982 return -EINVAL;
12983
12984 return n_entries;
12985 }
12986
12987 static int handle_nan_filter(struct nlattr *attr_filter,
12988 struct cfg80211_nan_func *func,
12989 bool tx)
12990 {
12991 struct nlattr *attr;
12992 int n_entries, rem, i;
12993 struct cfg80211_nan_func_filter *filter;
12994
12995 n_entries = validate_nan_filter(attr_filter);
12996 if (n_entries < 0)
12997 return n_entries;
12998
12999 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13000
13001 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13002 if (!filter)
13003 return -ENOMEM;
13004
13005 i = 0;
13006 nla_for_each_nested(attr, attr_filter, rem) {
13007 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13008 filter[i].len = nla_len(attr);
13009 i++;
13010 }
13011 if (tx) {
13012 func->num_tx_filters = n_entries;
13013 func->tx_filters = filter;
13014 } else {
13015 func->num_rx_filters = n_entries;
13016 func->rx_filters = filter;
13017 }
13018
13019 return 0;
13020 }
13021
13022 static int nl80211_nan_add_func(struct sk_buff *skb,
13023 struct genl_info *info)
13024 {
13025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13026 struct wireless_dev *wdev = info->user_ptr[1];
13027 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13028 struct cfg80211_nan_func *func;
13029 struct sk_buff *msg = NULL;
13030 void *hdr = NULL;
13031 int err = 0;
13032
13033 if (wdev->iftype != NL80211_IFTYPE_NAN)
13034 return -EOPNOTSUPP;
13035
13036 if (!wdev_running(wdev))
13037 return -ENOTCONN;
13038
13039 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13040 return -EINVAL;
13041
13042 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13043 info->attrs[NL80211_ATTR_NAN_FUNC],
13044 nl80211_nan_func_policy,
13045 info->extack);
13046 if (err)
13047 return err;
13048
13049 func = kzalloc(sizeof(*func), GFP_KERNEL);
13050 if (!func)
13051 return -ENOMEM;
13052
13053 func->cookie = cfg80211_assign_cookie(rdev);
13054
13055 if (!tb[NL80211_NAN_FUNC_TYPE]) {
13056 err = -EINVAL;
13057 goto out;
13058 }
13059
13060
13061 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13062
13063 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13064 err = -EINVAL;
13065 goto out;
13066 }
13067
13068 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13069 sizeof(func->service_id));
13070
13071 func->close_range =
13072 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13073
13074 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13075 func->serv_spec_info_len =
13076 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13077 func->serv_spec_info =
13078 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13079 func->serv_spec_info_len,
13080 GFP_KERNEL);
13081 if (!func->serv_spec_info) {
13082 err = -ENOMEM;
13083 goto out;
13084 }
13085 }
13086
13087 if (tb[NL80211_NAN_FUNC_TTL])
13088 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13089
13090 switch (func->type) {
13091 case NL80211_NAN_FUNC_PUBLISH:
13092 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13093 err = -EINVAL;
13094 goto out;
13095 }
13096
13097 func->publish_type =
13098 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13099 func->publish_bcast =
13100 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13101
13102 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13103 func->publish_bcast) {
13104 err = -EINVAL;
13105 goto out;
13106 }
13107 break;
13108 case NL80211_NAN_FUNC_SUBSCRIBE:
13109 func->subscribe_active =
13110 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13111 break;
13112 case NL80211_NAN_FUNC_FOLLOW_UP:
13113 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13114 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13115 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13116 err = -EINVAL;
13117 goto out;
13118 }
13119
13120 func->followup_id =
13121 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13122 func->followup_reqid =
13123 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13124 memcpy(func->followup_dest.addr,
13125 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13126 sizeof(func->followup_dest.addr));
13127 if (func->ttl) {
13128 err = -EINVAL;
13129 goto out;
13130 }
13131 break;
13132 default:
13133 err = -EINVAL;
13134 goto out;
13135 }
13136
13137 if (tb[NL80211_NAN_FUNC_SRF]) {
13138 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13139
13140 err = nla_parse_nested_deprecated(srf_tb,
13141 NL80211_NAN_SRF_ATTR_MAX,
13142 tb[NL80211_NAN_FUNC_SRF],
13143 nl80211_nan_srf_policy,
13144 info->extack);
13145 if (err)
13146 goto out;
13147
13148 func->srf_include =
13149 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13150
13151 if (srf_tb[NL80211_NAN_SRF_BF]) {
13152 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13153 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13154 err = -EINVAL;
13155 goto out;
13156 }
13157
13158 func->srf_bf_len =
13159 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13160 func->srf_bf =
13161 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13162 func->srf_bf_len, GFP_KERNEL);
13163 if (!func->srf_bf) {
13164 err = -ENOMEM;
13165 goto out;
13166 }
13167
13168 func->srf_bf_idx =
13169 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13170 } else {
13171 struct nlattr *attr, *mac_attr =
13172 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13173 int n_entries, rem, i = 0;
13174
13175 if (!mac_attr) {
13176 err = -EINVAL;
13177 goto out;
13178 }
13179
13180 n_entries = validate_acl_mac_addrs(mac_attr);
13181 if (n_entries <= 0) {
13182 err = -EINVAL;
13183 goto out;
13184 }
13185
13186 func->srf_num_macs = n_entries;
13187 func->srf_macs =
13188 kcalloc(n_entries, sizeof(*func->srf_macs),
13189 GFP_KERNEL);
13190 if (!func->srf_macs) {
13191 err = -ENOMEM;
13192 goto out;
13193 }
13194
13195 nla_for_each_nested(attr, mac_attr, rem)
13196 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13197 sizeof(*func->srf_macs));
13198 }
13199 }
13200
13201 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13202 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13203 func, true);
13204 if (err)
13205 goto out;
13206 }
13207
13208 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13209 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13210 func, false);
13211 if (err)
13212 goto out;
13213 }
13214
13215 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13216 if (!msg) {
13217 err = -ENOMEM;
13218 goto out;
13219 }
13220
13221 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13222 NL80211_CMD_ADD_NAN_FUNCTION);
13223 /* This can't really happen - we just allocated 4KB */
13224 if (WARN_ON(!hdr)) {
13225 err = -ENOMEM;
13226 goto out;
13227 }
13228
13229 err = rdev_add_nan_func(rdev, wdev, func);
13230 out:
13231 if (err < 0) {
13232 cfg80211_free_nan_func(func);
13233 nlmsg_free(msg);
13234 return err;
13235 }
13236
13237 /* propagate the instance id and cookie to userspace */
13238 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13239 NL80211_ATTR_PAD))
13240 goto nla_put_failure;
13241
13242 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13243 if (!func_attr)
13244 goto nla_put_failure;
13245
13246 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13247 func->instance_id))
13248 goto nla_put_failure;
13249
13250 nla_nest_end(msg, func_attr);
13251
13252 genlmsg_end(msg, hdr);
13253 return genlmsg_reply(msg, info);
13254
13255 nla_put_failure:
13256 nlmsg_free(msg);
13257 return -ENOBUFS;
13258 }
13259
13260 static int nl80211_nan_del_func(struct sk_buff *skb,
13261 struct genl_info *info)
13262 {
13263 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13264 struct wireless_dev *wdev = info->user_ptr[1];
13265 u64 cookie;
13266
13267 if (wdev->iftype != NL80211_IFTYPE_NAN)
13268 return -EOPNOTSUPP;
13269
13270 if (!wdev_running(wdev))
13271 return -ENOTCONN;
13272
13273 if (!info->attrs[NL80211_ATTR_COOKIE])
13274 return -EINVAL;
13275
13276 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13277
13278 rdev_del_nan_func(rdev, wdev, cookie);
13279
13280 return 0;
13281 }
13282
13283 static int nl80211_nan_change_config(struct sk_buff *skb,
13284 struct genl_info *info)
13285 {
13286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13287 struct wireless_dev *wdev = info->user_ptr[1];
13288 struct cfg80211_nan_conf conf = {};
13289 u32 changed = 0;
13290
13291 if (wdev->iftype != NL80211_IFTYPE_NAN)
13292 return -EOPNOTSUPP;
13293
13294 if (!wdev_running(wdev))
13295 return -ENOTCONN;
13296
13297 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13298 conf.master_pref =
13299 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13300 if (conf.master_pref <= 1 || conf.master_pref == 255)
13301 return -EINVAL;
13302
13303 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13304 }
13305
13306 if (info->attrs[NL80211_ATTR_BANDS]) {
13307 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13308
13309 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13310 return -EOPNOTSUPP;
13311
13312 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13313 return -EINVAL;
13314
13315 conf.bands = bands;
13316 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13317 }
13318
13319 if (!changed)
13320 return -EINVAL;
13321
13322 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13323 }
13324
13325 void cfg80211_nan_match(struct wireless_dev *wdev,
13326 struct cfg80211_nan_match_params *match, gfp_t gfp)
13327 {
13328 struct wiphy *wiphy = wdev->wiphy;
13329 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13330 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13331 struct sk_buff *msg;
13332 void *hdr;
13333
13334 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13335 return;
13336
13337 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13338 if (!msg)
13339 return;
13340
13341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13342 if (!hdr) {
13343 nlmsg_free(msg);
13344 return;
13345 }
13346
13347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13348 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13349 wdev->netdev->ifindex)) ||
13350 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13351 NL80211_ATTR_PAD))
13352 goto nla_put_failure;
13353
13354 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13355 NL80211_ATTR_PAD) ||
13356 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13357 goto nla_put_failure;
13358
13359 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13360 if (!match_attr)
13361 goto nla_put_failure;
13362
13363 local_func_attr = nla_nest_start_noflag(msg,
13364 NL80211_NAN_MATCH_FUNC_LOCAL);
13365 if (!local_func_attr)
13366 goto nla_put_failure;
13367
13368 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13369 goto nla_put_failure;
13370
13371 nla_nest_end(msg, local_func_attr);
13372
13373 peer_func_attr = nla_nest_start_noflag(msg,
13374 NL80211_NAN_MATCH_FUNC_PEER);
13375 if (!peer_func_attr)
13376 goto nla_put_failure;
13377
13378 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13379 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13380 goto nla_put_failure;
13381
13382 if (match->info && match->info_len &&
13383 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13384 match->info))
13385 goto nla_put_failure;
13386
13387 nla_nest_end(msg, peer_func_attr);
13388 nla_nest_end(msg, match_attr);
13389 genlmsg_end(msg, hdr);
13390
13391 if (!wdev->owner_nlportid)
13392 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13393 msg, 0, NL80211_MCGRP_NAN, gfp);
13394 else
13395 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13396 wdev->owner_nlportid);
13397
13398 return;
13399
13400 nla_put_failure:
13401 nlmsg_free(msg);
13402 }
13403 EXPORT_SYMBOL(cfg80211_nan_match);
13404
13405 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13406 u8 inst_id,
13407 enum nl80211_nan_func_term_reason reason,
13408 u64 cookie, gfp_t gfp)
13409 {
13410 struct wiphy *wiphy = wdev->wiphy;
13411 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13412 struct sk_buff *msg;
13413 struct nlattr *func_attr;
13414 void *hdr;
13415
13416 if (WARN_ON(!inst_id))
13417 return;
13418
13419 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13420 if (!msg)
13421 return;
13422
13423 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13424 if (!hdr) {
13425 nlmsg_free(msg);
13426 return;
13427 }
13428
13429 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13430 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13431 wdev->netdev->ifindex)) ||
13432 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13433 NL80211_ATTR_PAD))
13434 goto nla_put_failure;
13435
13436 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13437 NL80211_ATTR_PAD))
13438 goto nla_put_failure;
13439
13440 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13441 if (!func_attr)
13442 goto nla_put_failure;
13443
13444 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13445 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13446 goto nla_put_failure;
13447
13448 nla_nest_end(msg, func_attr);
13449 genlmsg_end(msg, hdr);
13450
13451 if (!wdev->owner_nlportid)
13452 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13453 msg, 0, NL80211_MCGRP_NAN, gfp);
13454 else
13455 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13456 wdev->owner_nlportid);
13457
13458 return;
13459
13460 nla_put_failure:
13461 nlmsg_free(msg);
13462 }
13463 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13464
13465 static int nl80211_get_protocol_features(struct sk_buff *skb,
13466 struct genl_info *info)
13467 {
13468 void *hdr;
13469 struct sk_buff *msg;
13470
13471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13472 if (!msg)
13473 return -ENOMEM;
13474
13475 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13476 NL80211_CMD_GET_PROTOCOL_FEATURES);
13477 if (!hdr)
13478 goto nla_put_failure;
13479
13480 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13481 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13482 goto nla_put_failure;
13483
13484 genlmsg_end(msg, hdr);
13485 return genlmsg_reply(msg, info);
13486
13487 nla_put_failure:
13488 kfree_skb(msg);
13489 return -ENOBUFS;
13490 }
13491
13492 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13493 {
13494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13495 struct cfg80211_update_ft_ies_params ft_params;
13496 struct net_device *dev = info->user_ptr[1];
13497
13498 if (!rdev->ops->update_ft_ies)
13499 return -EOPNOTSUPP;
13500
13501 if (!info->attrs[NL80211_ATTR_MDID] ||
13502 !info->attrs[NL80211_ATTR_IE])
13503 return -EINVAL;
13504
13505 memset(&ft_params, 0, sizeof(ft_params));
13506 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13507 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13508 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13509
13510 return rdev_update_ft_ies(rdev, dev, &ft_params);
13511 }
13512
13513 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13514 struct genl_info *info)
13515 {
13516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13517 struct wireless_dev *wdev = info->user_ptr[1];
13518 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13519 u16 duration;
13520 int ret;
13521
13522 if (!rdev->ops->crit_proto_start)
13523 return -EOPNOTSUPP;
13524
13525 if (WARN_ON(!rdev->ops->crit_proto_stop))
13526 return -EINVAL;
13527
13528 if (rdev->crit_proto_nlportid)
13529 return -EBUSY;
13530
13531 /* determine protocol if provided */
13532 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13533 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13534
13535 if (proto >= NUM_NL80211_CRIT_PROTO)
13536 return -EINVAL;
13537
13538 /* timeout must be provided */
13539 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13540 return -EINVAL;
13541
13542 duration =
13543 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13544
13545 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13546 if (!ret)
13547 rdev->crit_proto_nlportid = info->snd_portid;
13548
13549 return ret;
13550 }
13551
13552 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13553 struct genl_info *info)
13554 {
13555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13556 struct wireless_dev *wdev = info->user_ptr[1];
13557
13558 if (!rdev->ops->crit_proto_stop)
13559 return -EOPNOTSUPP;
13560
13561 if (rdev->crit_proto_nlportid) {
13562 rdev->crit_proto_nlportid = 0;
13563 rdev_crit_proto_stop(rdev, wdev);
13564 }
13565 return 0;
13566 }
13567
13568 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13569 struct nlattr *attr,
13570 struct netlink_ext_ack *extack)
13571 {
13572 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13573 if (attr->nla_type & NLA_F_NESTED) {
13574 NL_SET_ERR_MSG_ATTR(extack, attr,
13575 "unexpected nested data");
13576 return -EINVAL;
13577 }
13578
13579 return 0;
13580 }
13581
13582 if (!(attr->nla_type & NLA_F_NESTED)) {
13583 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13584 return -EINVAL;
13585 }
13586
13587 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13588 }
13589
13590 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13591 {
13592 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13593 struct wireless_dev *wdev =
13594 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13595 int i, err;
13596 u32 vid, subcmd;
13597
13598 if (!rdev->wiphy.vendor_commands)
13599 return -EOPNOTSUPP;
13600
13601 if (IS_ERR(wdev)) {
13602 err = PTR_ERR(wdev);
13603 if (err != -EINVAL)
13604 return err;
13605 wdev = NULL;
13606 } else if (wdev->wiphy != &rdev->wiphy) {
13607 return -EINVAL;
13608 }
13609
13610 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13611 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13612 return -EINVAL;
13613
13614 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13615 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13616 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13617 const struct wiphy_vendor_command *vcmd;
13618 void *data = NULL;
13619 int len = 0;
13620
13621 vcmd = &rdev->wiphy.vendor_commands[i];
13622
13623 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13624 continue;
13625
13626 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13627 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13628 if (!wdev)
13629 return -EINVAL;
13630 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13631 !wdev->netdev)
13632 return -EINVAL;
13633
13634 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13635 if (!wdev_running(wdev))
13636 return -ENETDOWN;
13637 }
13638 } else {
13639 wdev = NULL;
13640 }
13641
13642 if (!vcmd->doit)
13643 return -EOPNOTSUPP;
13644
13645 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13646 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13647 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13648
13649 err = nl80211_vendor_check_policy(vcmd,
13650 info->attrs[NL80211_ATTR_VENDOR_DATA],
13651 info->extack);
13652 if (err)
13653 return err;
13654 }
13655
13656 rdev->cur_cmd_info = info;
13657 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13658 rdev->cur_cmd_info = NULL;
13659 return err;
13660 }
13661
13662 return -EOPNOTSUPP;
13663 }
13664
13665 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13666 struct netlink_callback *cb,
13667 struct cfg80211_registered_device **rdev,
13668 struct wireless_dev **wdev)
13669 {
13670 struct nlattr **attrbuf;
13671 u32 vid, subcmd;
13672 unsigned int i;
13673 int vcmd_idx = -1;
13674 int err;
13675 void *data = NULL;
13676 unsigned int data_len = 0;
13677
13678 if (cb->args[0]) {
13679 /* subtract the 1 again here */
13680 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13681 struct wireless_dev *tmp;
13682
13683 if (!wiphy)
13684 return -ENODEV;
13685 *rdev = wiphy_to_rdev(wiphy);
13686 *wdev = NULL;
13687
13688 if (cb->args[1]) {
13689 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13690 if (tmp->identifier == cb->args[1] - 1) {
13691 *wdev = tmp;
13692 break;
13693 }
13694 }
13695 }
13696
13697 /* keep rtnl locked in successful case */
13698 return 0;
13699 }
13700
13701 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13702 if (!attrbuf)
13703 return -ENOMEM;
13704
13705 err = nlmsg_parse_deprecated(cb->nlh,
13706 GENL_HDRLEN + nl80211_fam.hdrsize,
13707 attrbuf, nl80211_fam.maxattr,
13708 nl80211_policy, NULL);
13709 if (err)
13710 goto out;
13711
13712 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13713 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13714 err = -EINVAL;
13715 goto out;
13716 }
13717
13718 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13719 if (IS_ERR(*wdev))
13720 *wdev = NULL;
13721
13722 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13723 if (IS_ERR(*rdev)) {
13724 err = PTR_ERR(*rdev);
13725 goto out;
13726 }
13727
13728 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13729 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13730
13731 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13732 const struct wiphy_vendor_command *vcmd;
13733
13734 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13735
13736 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13737 continue;
13738
13739 if (!vcmd->dumpit) {
13740 err = -EOPNOTSUPP;
13741 goto out;
13742 }
13743
13744 vcmd_idx = i;
13745 break;
13746 }
13747
13748 if (vcmd_idx < 0) {
13749 err = -EOPNOTSUPP;
13750 goto out;
13751 }
13752
13753 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13754 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13755 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13756
13757 err = nl80211_vendor_check_policy(
13758 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13759 attrbuf[NL80211_ATTR_VENDOR_DATA],
13760 cb->extack);
13761 if (err)
13762 goto out;
13763 }
13764
13765 /* 0 is the first index - add 1 to parse only once */
13766 cb->args[0] = (*rdev)->wiphy_idx + 1;
13767 /* add 1 to know if it was NULL */
13768 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13769 cb->args[2] = vcmd_idx;
13770 cb->args[3] = (unsigned long)data;
13771 cb->args[4] = data_len;
13772
13773 /* keep rtnl locked in successful case */
13774 err = 0;
13775 out:
13776 kfree(attrbuf);
13777 return err;
13778 }
13779
13780 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13781 struct netlink_callback *cb)
13782 {
13783 struct cfg80211_registered_device *rdev;
13784 struct wireless_dev *wdev;
13785 unsigned int vcmd_idx;
13786 const struct wiphy_vendor_command *vcmd;
13787 void *data;
13788 int data_len;
13789 int err;
13790 struct nlattr *vendor_data;
13791
13792 rtnl_lock();
13793 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13794 if (err)
13795 goto out;
13796
13797 vcmd_idx = cb->args[2];
13798 data = (void *)cb->args[3];
13799 data_len = cb->args[4];
13800 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13801
13802 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13803 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13804 if (!wdev) {
13805 err = -EINVAL;
13806 goto out;
13807 }
13808 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13809 !wdev->netdev) {
13810 err = -EINVAL;
13811 goto out;
13812 }
13813
13814 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13815 if (!wdev_running(wdev)) {
13816 err = -ENETDOWN;
13817 goto out;
13818 }
13819 }
13820 }
13821
13822 while (1) {
13823 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13824 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13825 NL80211_CMD_VENDOR);
13826 if (!hdr)
13827 break;
13828
13829 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13830 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13831 wdev_id(wdev),
13832 NL80211_ATTR_PAD))) {
13833 genlmsg_cancel(skb, hdr);
13834 break;
13835 }
13836
13837 vendor_data = nla_nest_start_noflag(skb,
13838 NL80211_ATTR_VENDOR_DATA);
13839 if (!vendor_data) {
13840 genlmsg_cancel(skb, hdr);
13841 break;
13842 }
13843
13844 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13845 (unsigned long *)&cb->args[5]);
13846 nla_nest_end(skb, vendor_data);
13847
13848 if (err == -ENOBUFS || err == -ENOENT) {
13849 genlmsg_cancel(skb, hdr);
13850 break;
13851 } else if (err <= 0) {
13852 genlmsg_cancel(skb, hdr);
13853 goto out;
13854 }
13855
13856 genlmsg_end(skb, hdr);
13857 }
13858
13859 err = skb->len;
13860 out:
13861 rtnl_unlock();
13862 return err;
13863 }
13864
13865 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13866 enum nl80211_commands cmd,
13867 enum nl80211_attrs attr,
13868 int approxlen)
13869 {
13870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13871
13872 if (WARN_ON(!rdev->cur_cmd_info))
13873 return NULL;
13874
13875 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13876 rdev->cur_cmd_info->snd_portid,
13877 rdev->cur_cmd_info->snd_seq,
13878 cmd, attr, NULL, GFP_KERNEL);
13879 }
13880 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13881
13882 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13883 {
13884 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13885 void *hdr = ((void **)skb->cb)[1];
13886 struct nlattr *data = ((void **)skb->cb)[2];
13887
13888 /* clear CB data for netlink core to own from now on */
13889 memset(skb->cb, 0, sizeof(skb->cb));
13890
13891 if (WARN_ON(!rdev->cur_cmd_info)) {
13892 kfree_skb(skb);
13893 return -EINVAL;
13894 }
13895
13896 nla_nest_end(skb, data);
13897 genlmsg_end(skb, hdr);
13898 return genlmsg_reply(skb, rdev->cur_cmd_info);
13899 }
13900 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13901
13902 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13903 {
13904 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13905
13906 if (WARN_ON(!rdev->cur_cmd_info))
13907 return 0;
13908
13909 return rdev->cur_cmd_info->snd_portid;
13910 }
13911 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13912
13913 static int nl80211_set_qos_map(struct sk_buff *skb,
13914 struct genl_info *info)
13915 {
13916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13917 struct cfg80211_qos_map *qos_map = NULL;
13918 struct net_device *dev = info->user_ptr[1];
13919 u8 *pos, len, num_des, des_len, des;
13920 int ret;
13921
13922 if (!rdev->ops->set_qos_map)
13923 return -EOPNOTSUPP;
13924
13925 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13926 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13927 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13928
13929 if (len % 2)
13930 return -EINVAL;
13931
13932 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13933 if (!qos_map)
13934 return -ENOMEM;
13935
13936 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13937 if (num_des) {
13938 des_len = num_des *
13939 sizeof(struct cfg80211_dscp_exception);
13940 memcpy(qos_map->dscp_exception, pos, des_len);
13941 qos_map->num_des = num_des;
13942 for (des = 0; des < num_des; des++) {
13943 if (qos_map->dscp_exception[des].up > 7) {
13944 kfree(qos_map);
13945 return -EINVAL;
13946 }
13947 }
13948 pos += des_len;
13949 }
13950 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13951 }
13952
13953 wdev_lock(dev->ieee80211_ptr);
13954 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13955 if (!ret)
13956 ret = rdev_set_qos_map(rdev, dev, qos_map);
13957 wdev_unlock(dev->ieee80211_ptr);
13958
13959 kfree(qos_map);
13960 return ret;
13961 }
13962
13963 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13964 {
13965 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13966 struct net_device *dev = info->user_ptr[1];
13967 struct wireless_dev *wdev = dev->ieee80211_ptr;
13968 const u8 *peer;
13969 u8 tsid, up;
13970 u16 admitted_time = 0;
13971 int err;
13972
13973 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13974 return -EOPNOTSUPP;
13975
13976 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13977 !info->attrs[NL80211_ATTR_USER_PRIO])
13978 return -EINVAL;
13979
13980 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13981 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13982
13983 /* WMM uses TIDs 0-7 even for TSPEC */
13984 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13985 /* TODO: handle 802.11 TSPEC/admission control
13986 * need more attributes for that (e.g. BA session requirement);
13987 * change the WMM adminssion test above to allow both then
13988 */
13989 return -EINVAL;
13990 }
13991
13992 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13993
13994 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13995 admitted_time =
13996 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13997 if (!admitted_time)
13998 return -EINVAL;
13999 }
14000
14001 wdev_lock(wdev);
14002 switch (wdev->iftype) {
14003 case NL80211_IFTYPE_STATION:
14004 case NL80211_IFTYPE_P2P_CLIENT:
14005 if (wdev->current_bss)
14006 break;
14007 err = -ENOTCONN;
14008 goto out;
14009 default:
14010 err = -EOPNOTSUPP;
14011 goto out;
14012 }
14013
14014 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14015
14016 out:
14017 wdev_unlock(wdev);
14018 return err;
14019 }
14020
14021 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14022 {
14023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14024 struct net_device *dev = info->user_ptr[1];
14025 struct wireless_dev *wdev = dev->ieee80211_ptr;
14026 const u8 *peer;
14027 u8 tsid;
14028 int err;
14029
14030 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14031 return -EINVAL;
14032
14033 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14034 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14035
14036 wdev_lock(wdev);
14037 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14038 wdev_unlock(wdev);
14039
14040 return err;
14041 }
14042
14043 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14044 struct genl_info *info)
14045 {
14046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14047 struct net_device *dev = info->user_ptr[1];
14048 struct wireless_dev *wdev = dev->ieee80211_ptr;
14049 struct cfg80211_chan_def chandef = {};
14050 const u8 *addr;
14051 u8 oper_class;
14052 int err;
14053
14054 if (!rdev->ops->tdls_channel_switch ||
14055 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14056 return -EOPNOTSUPP;
14057
14058 switch (dev->ieee80211_ptr->iftype) {
14059 case NL80211_IFTYPE_STATION:
14060 case NL80211_IFTYPE_P2P_CLIENT:
14061 break;
14062 default:
14063 return -EOPNOTSUPP;
14064 }
14065
14066 if (!info->attrs[NL80211_ATTR_MAC] ||
14067 !info->attrs[NL80211_ATTR_OPER_CLASS])
14068 return -EINVAL;
14069
14070 err = nl80211_parse_chandef(rdev, info, &chandef);
14071 if (err)
14072 return err;
14073
14074 /*
14075 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14076 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14077 * specification is not defined for them.
14078 */
14079 if (chandef.chan->band == NL80211_BAND_2GHZ &&
14080 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14081 chandef.width != NL80211_CHAN_WIDTH_20)
14082 return -EINVAL;
14083
14084 /* we will be active on the TDLS link */
14085 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14086 wdev->iftype))
14087 return -EINVAL;
14088
14089 /* don't allow switching to DFS channels */
14090 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14091 return -EINVAL;
14092
14093 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14094 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14095
14096 wdev_lock(wdev);
14097 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14098 wdev_unlock(wdev);
14099
14100 return err;
14101 }
14102
14103 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14104 struct genl_info *info)
14105 {
14106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14107 struct net_device *dev = info->user_ptr[1];
14108 struct wireless_dev *wdev = dev->ieee80211_ptr;
14109 const u8 *addr;
14110
14111 if (!rdev->ops->tdls_channel_switch ||
14112 !rdev->ops->tdls_cancel_channel_switch ||
14113 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14114 return -EOPNOTSUPP;
14115
14116 switch (dev->ieee80211_ptr->iftype) {
14117 case NL80211_IFTYPE_STATION:
14118 case NL80211_IFTYPE_P2P_CLIENT:
14119 break;
14120 default:
14121 return -EOPNOTSUPP;
14122 }
14123
14124 if (!info->attrs[NL80211_ATTR_MAC])
14125 return -EINVAL;
14126
14127 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14128
14129 wdev_lock(wdev);
14130 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14131 wdev_unlock(wdev);
14132
14133 return 0;
14134 }
14135
14136 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14137 struct genl_info *info)
14138 {
14139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14140 struct net_device *dev = info->user_ptr[1];
14141 struct wireless_dev *wdev = dev->ieee80211_ptr;
14142 const struct nlattr *nla;
14143 bool enabled;
14144
14145 if (!rdev->ops->set_multicast_to_unicast)
14146 return -EOPNOTSUPP;
14147
14148 if (wdev->iftype != NL80211_IFTYPE_AP &&
14149 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14150 return -EOPNOTSUPP;
14151
14152 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14153 enabled = nla_get_flag(nla);
14154
14155 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14156 }
14157
14158 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14159 {
14160 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14161 struct net_device *dev = info->user_ptr[1];
14162 struct wireless_dev *wdev = dev->ieee80211_ptr;
14163 struct cfg80211_pmk_conf pmk_conf = {};
14164 int ret;
14165
14166 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14167 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14168 return -EOPNOTSUPP;
14169
14170 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14171 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14172 return -EOPNOTSUPP;
14173
14174 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14175 return -EINVAL;
14176
14177 wdev_lock(wdev);
14178 if (!wdev->current_bss) {
14179 ret = -ENOTCONN;
14180 goto out;
14181 }
14182
14183 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14184 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14185 ret = -EINVAL;
14186 goto out;
14187 }
14188
14189 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14190 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14191 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14192 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14193 ret = -EINVAL;
14194 goto out;
14195 }
14196
14197 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14198 pmk_conf.pmk_r0_name =
14199 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14200
14201 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14202 out:
14203 wdev_unlock(wdev);
14204 return ret;
14205 }
14206
14207 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14208 {
14209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14210 struct net_device *dev = info->user_ptr[1];
14211 struct wireless_dev *wdev = dev->ieee80211_ptr;
14212 const u8 *aa;
14213 int ret;
14214
14215 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14216 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14217 return -EOPNOTSUPP;
14218
14219 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14220 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14221 return -EOPNOTSUPP;
14222
14223 if (!info->attrs[NL80211_ATTR_MAC])
14224 return -EINVAL;
14225
14226 wdev_lock(wdev);
14227 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14228 ret = rdev_del_pmk(rdev, dev, aa);
14229 wdev_unlock(wdev);
14230
14231 return ret;
14232 }
14233
14234 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14235 {
14236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14237 struct net_device *dev = info->user_ptr[1];
14238 struct cfg80211_external_auth_params params;
14239
14240 if (!rdev->ops->external_auth)
14241 return -EOPNOTSUPP;
14242
14243 if (!info->attrs[NL80211_ATTR_SSID] &&
14244 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14246 return -EINVAL;
14247
14248 if (!info->attrs[NL80211_ATTR_BSSID])
14249 return -EINVAL;
14250
14251 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14252 return -EINVAL;
14253
14254 memset(&params, 0, sizeof(params));
14255
14256 if (info->attrs[NL80211_ATTR_SSID]) {
14257 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14258 if (params.ssid.ssid_len == 0)
14259 return -EINVAL;
14260 memcpy(params.ssid.ssid,
14261 nla_data(info->attrs[NL80211_ATTR_SSID]),
14262 params.ssid.ssid_len);
14263 }
14264
14265 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14266 ETH_ALEN);
14267
14268 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14269
14270 if (info->attrs[NL80211_ATTR_PMKID])
14271 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14272
14273 return rdev_external_auth(rdev, dev, &params);
14274 }
14275
14276 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14277 {
14278 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14280 struct net_device *dev = info->user_ptr[1];
14281 struct wireless_dev *wdev = dev->ieee80211_ptr;
14282 const u8 *buf;
14283 size_t len;
14284 u8 *dest;
14285 u16 proto;
14286 bool noencrypt;
14287 u64 cookie = 0;
14288 int err;
14289
14290 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14291 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14292 return -EOPNOTSUPP;
14293
14294 if (!rdev->ops->tx_control_port)
14295 return -EOPNOTSUPP;
14296
14297 if (!info->attrs[NL80211_ATTR_FRAME] ||
14298 !info->attrs[NL80211_ATTR_MAC] ||
14299 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14300 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14301 return -EINVAL;
14302 }
14303
14304 wdev_lock(wdev);
14305
14306 switch (wdev->iftype) {
14307 case NL80211_IFTYPE_AP:
14308 case NL80211_IFTYPE_P2P_GO:
14309 case NL80211_IFTYPE_MESH_POINT:
14310 break;
14311 case NL80211_IFTYPE_ADHOC:
14312 case NL80211_IFTYPE_STATION:
14313 case NL80211_IFTYPE_P2P_CLIENT:
14314 if (wdev->current_bss)
14315 break;
14316 err = -ENOTCONN;
14317 goto out;
14318 default:
14319 err = -EOPNOTSUPP;
14320 goto out;
14321 }
14322
14323 wdev_unlock(wdev);
14324
14325 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14326 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14327 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14328 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14329 noencrypt =
14330 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14331
14332 err = rdev_tx_control_port(rdev, dev, buf, len,
14333 dest, cpu_to_be16(proto), noencrypt,
14334 dont_wait_for_ack ? NULL : &cookie);
14335 if (!err && !dont_wait_for_ack)
14336 nl_set_extack_cookie_u64(info->extack, cookie);
14337 return err;
14338 out:
14339 wdev_unlock(wdev);
14340 return err;
14341 }
14342
14343 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14344 struct genl_info *info)
14345 {
14346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14347 struct net_device *dev = info->user_ptr[1];
14348 struct wireless_dev *wdev = dev->ieee80211_ptr;
14349 struct cfg80211_ftm_responder_stats ftm_stats = {};
14350 struct sk_buff *msg;
14351 void *hdr;
14352 struct nlattr *ftm_stats_attr;
14353 int err;
14354
14355 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14356 return -EOPNOTSUPP;
14357
14358 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14359 if (err)
14360 return err;
14361
14362 if (!ftm_stats.filled)
14363 return -ENODATA;
14364
14365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14366 if (!msg)
14367 return -ENOMEM;
14368
14369 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14370 NL80211_CMD_GET_FTM_RESPONDER_STATS);
14371 if (!hdr)
14372 goto nla_put_failure;
14373
14374 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14375 goto nla_put_failure;
14376
14377 ftm_stats_attr = nla_nest_start_noflag(msg,
14378 NL80211_ATTR_FTM_RESPONDER_STATS);
14379 if (!ftm_stats_attr)
14380 goto nla_put_failure;
14381
14382 #define SET_FTM(field, name, type) \
14383 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14384 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
14385 ftm_stats.field)) \
14386 goto nla_put_failure; } while (0)
14387 #define SET_FTM_U64(field, name) \
14388 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14389 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
14390 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
14391 goto nla_put_failure; } while (0)
14392
14393 SET_FTM(success_num, SUCCESS_NUM, u32);
14394 SET_FTM(partial_num, PARTIAL_NUM, u32);
14395 SET_FTM(failed_num, FAILED_NUM, u32);
14396 SET_FTM(asap_num, ASAP_NUM, u32);
14397 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14398 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14399 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14400 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14401 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14402 #undef SET_FTM
14403
14404 nla_nest_end(msg, ftm_stats_attr);
14405
14406 genlmsg_end(msg, hdr);
14407 return genlmsg_reply(msg, info);
14408
14409 nla_put_failure:
14410 nlmsg_free(msg);
14411 return -ENOBUFS;
14412 }
14413
14414 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14415 {
14416 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14417 struct cfg80211_update_owe_info owe_info;
14418 struct net_device *dev = info->user_ptr[1];
14419
14420 if (!rdev->ops->update_owe_info)
14421 return -EOPNOTSUPP;
14422
14423 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14424 !info->attrs[NL80211_ATTR_MAC])
14425 return -EINVAL;
14426
14427 memset(&owe_info, 0, sizeof(owe_info));
14428 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14429 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14430
14431 if (info->attrs[NL80211_ATTR_IE]) {
14432 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14433 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14434 }
14435
14436 return rdev_update_owe_info(rdev, dev, &owe_info);
14437 }
14438
14439 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14440 {
14441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14442 struct net_device *dev = info->user_ptr[1];
14443 struct wireless_dev *wdev = dev->ieee80211_ptr;
14444 struct station_info sinfo = {};
14445 const u8 *buf;
14446 size_t len;
14447 u8 *dest;
14448 int err;
14449
14450 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14451 return -EOPNOTSUPP;
14452
14453 if (!info->attrs[NL80211_ATTR_MAC] ||
14454 !info->attrs[NL80211_ATTR_FRAME]) {
14455 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14456 return -EINVAL;
14457 }
14458
14459 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14460 return -EOPNOTSUPP;
14461
14462 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14463 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14464 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14465
14466 if (len < sizeof(struct ethhdr))
14467 return -EINVAL;
14468
14469 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14470 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14471 return -EINVAL;
14472
14473 err = rdev_get_station(rdev, dev, dest, &sinfo);
14474 if (err)
14475 return err;
14476
14477 cfg80211_sinfo_release_content(&sinfo);
14478
14479 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14480 }
14481
14482 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14483 struct nlattr *attrs[], struct net_device *dev,
14484 struct cfg80211_tid_cfg *tid_conf,
14485 struct genl_info *info, const u8 *peer)
14486 {
14487 struct netlink_ext_ack *extack = info->extack;
14488 u64 mask;
14489 int err;
14490
14491 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14492 return -EINVAL;
14493
14494 tid_conf->config_override =
14495 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14496 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14497
14498 if (tid_conf->config_override) {
14499 if (rdev->ops->reset_tid_config) {
14500 err = rdev_reset_tid_config(rdev, dev, peer,
14501 tid_conf->tids);
14502 if (err)
14503 return err;
14504 } else {
14505 return -EINVAL;
14506 }
14507 }
14508
14509 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14510 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14511 tid_conf->noack =
14512 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14513 }
14514
14515 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14516 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14517 tid_conf->retry_short =
14518 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14519
14520 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14521 return -EINVAL;
14522 }
14523
14524 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14525 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14526 tid_conf->retry_long =
14527 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14528
14529 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14530 return -EINVAL;
14531 }
14532
14533 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14534 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14535 tid_conf->ampdu =
14536 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14537 }
14538
14539 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14540 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14541 tid_conf->rtscts =
14542 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14543 }
14544
14545 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14546 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14547 tid_conf->amsdu =
14548 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14549 }
14550
14551 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14552 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14553
14554 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14555
14556 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14557 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14558 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14559 &tid_conf->txrate_mask, dev,
14560 true);
14561 if (err)
14562 return err;
14563
14564 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14565 }
14566 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14567 }
14568
14569 if (peer)
14570 mask = rdev->wiphy.tid_config_support.peer;
14571 else
14572 mask = rdev->wiphy.tid_config_support.vif;
14573
14574 if (tid_conf->mask & ~mask) {
14575 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14576 return -ENOTSUPP;
14577 }
14578
14579 return 0;
14580 }
14581
14582 static int nl80211_set_tid_config(struct sk_buff *skb,
14583 struct genl_info *info)
14584 {
14585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14586 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14587 struct net_device *dev = info->user_ptr[1];
14588 struct cfg80211_tid_config *tid_config;
14589 struct nlattr *tid;
14590 int conf_idx = 0, rem_conf;
14591 int ret = -EINVAL;
14592 u32 num_conf = 0;
14593
14594 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14595 return -EINVAL;
14596
14597 if (!rdev->ops->set_tid_config)
14598 return -EOPNOTSUPP;
14599
14600 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14601 rem_conf)
14602 num_conf++;
14603
14604 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14605 GFP_KERNEL);
14606 if (!tid_config)
14607 return -ENOMEM;
14608
14609 tid_config->n_tid_conf = num_conf;
14610
14611 if (info->attrs[NL80211_ATTR_MAC])
14612 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14613
14614 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14615 rem_conf) {
14616 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14617 tid, NULL, NULL);
14618
14619 if (ret)
14620 goto bad_tid_conf;
14621
14622 ret = parse_tid_conf(rdev, attrs, dev,
14623 &tid_config->tid_conf[conf_idx],
14624 info, tid_config->peer);
14625 if (ret)
14626 goto bad_tid_conf;
14627
14628 conf_idx++;
14629 }
14630
14631 ret = rdev_set_tid_config(rdev, dev, tid_config);
14632
14633 bad_tid_conf:
14634 kfree(tid_config);
14635 return ret;
14636 }
14637
14638 #define NL80211_FLAG_NEED_WIPHY 0x01
14639 #define NL80211_FLAG_NEED_NETDEV 0x02
14640 #define NL80211_FLAG_NEED_RTNL 0x04
14641 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
14642 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
14643 NL80211_FLAG_CHECK_NETDEV_UP)
14644 #define NL80211_FLAG_NEED_WDEV 0x10
14645 /* If a netdev is associated, it must be UP, P2P must be started */
14646 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
14647 NL80211_FLAG_CHECK_NETDEV_UP)
14648 #define NL80211_FLAG_CLEAR_SKB 0x20
14649
14650 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14651 struct genl_info *info)
14652 {
14653 struct cfg80211_registered_device *rdev;
14654 struct wireless_dev *wdev;
14655 struct net_device *dev;
14656 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14657
14658 if (rtnl)
14659 rtnl_lock();
14660
14661 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14662 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14663 if (IS_ERR(rdev)) {
14664 if (rtnl)
14665 rtnl_unlock();
14666 return PTR_ERR(rdev);
14667 }
14668 info->user_ptr[0] = rdev;
14669 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14670 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14671 ASSERT_RTNL();
14672
14673 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14674 info->attrs);
14675 if (IS_ERR(wdev)) {
14676 if (rtnl)
14677 rtnl_unlock();
14678 return PTR_ERR(wdev);
14679 }
14680
14681 dev = wdev->netdev;
14682 rdev = wiphy_to_rdev(wdev->wiphy);
14683
14684 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14685 if (!dev) {
14686 if (rtnl)
14687 rtnl_unlock();
14688 return -EINVAL;
14689 }
14690
14691 info->user_ptr[1] = dev;
14692 } else {
14693 info->user_ptr[1] = wdev;
14694 }
14695
14696 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14697 !wdev_running(wdev)) {
14698 if (rtnl)
14699 rtnl_unlock();
14700 return -ENETDOWN;
14701 }
14702
14703 if (dev)
14704 dev_hold(dev);
14705
14706 info->user_ptr[0] = rdev;
14707 }
14708
14709 return 0;
14710 }
14711
14712 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14713 struct genl_info *info)
14714 {
14715 if (info->user_ptr[1]) {
14716 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14717 struct wireless_dev *wdev = info->user_ptr[1];
14718
14719 if (wdev->netdev)
14720 dev_put(wdev->netdev);
14721 } else {
14722 dev_put(info->user_ptr[1]);
14723 }
14724 }
14725
14726 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14727 rtnl_unlock();
14728
14729 /* If needed, clear the netlink message payload from the SKB
14730 * as it might contain key data that shouldn't stick around on
14731 * the heap after the SKB is freed. The netlink message header
14732 * is still needed for further processing, so leave it intact.
14733 */
14734 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14735 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14736
14737 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14738 }
14739 }
14740
14741 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14742 struct cfg80211_sar_specs *sar_specs,
14743 struct nlattr *spec[], int index)
14744 {
14745 u32 range_index, i;
14746
14747 if (!sar_specs || !spec)
14748 return -EINVAL;
14749
14750 if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14751 !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14752 return -EINVAL;
14753
14754 range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14755
14756 /* check if range_index exceeds num_freq_ranges */
14757 if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14758 return -EINVAL;
14759
14760 /* check if range_index duplicates */
14761 for (i = 0; i < index; i++) {
14762 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14763 return -EINVAL;
14764 }
14765
14766 sar_specs->sub_specs[index].power =
14767 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14768
14769 sar_specs->sub_specs[index].freq_range_index = range_index;
14770
14771 return 0;
14772 }
14773
14774 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14775 {
14776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14777 struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14778 struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14779 struct cfg80211_sar_specs *sar_spec;
14780 enum nl80211_sar_type type;
14781 struct nlattr *spec_list;
14782 u32 specs;
14783 int rem, err;
14784
14785 if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14786 return -EOPNOTSUPP;
14787
14788 if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14789 return -EINVAL;
14790
14791 nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14792 info->attrs[NL80211_ATTR_SAR_SPEC],
14793 NULL, NULL);
14794
14795 if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14796 return -EINVAL;
14797
14798 type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14799 if (type != rdev->wiphy.sar_capa->type)
14800 return -EINVAL;
14801
14802 specs = 0;
14803 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14804 specs++;
14805
14806 if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14807 return -EINVAL;
14808
14809 sar_spec = kzalloc(sizeof(*sar_spec) +
14810 specs * sizeof(struct cfg80211_sar_sub_specs),
14811 GFP_KERNEL);
14812 if (!sar_spec)
14813 return -ENOMEM;
14814
14815 sar_spec->type = type;
14816 specs = 0;
14817 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14818 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14819 spec_list, NULL, NULL);
14820
14821 switch (type) {
14822 case NL80211_SAR_TYPE_POWER:
14823 if (nl80211_set_sar_sub_specs(rdev, sar_spec,
14824 spec, specs)) {
14825 err = -EINVAL;
14826 goto error;
14827 }
14828 break;
14829 default:
14830 err = -EINVAL;
14831 goto error;
14832 }
14833 specs++;
14834 }
14835
14836 sar_spec->num_sub_specs = specs;
14837
14838 rdev->cur_cmd_info = info;
14839 err = rdev_set_sar_specs(rdev, sar_spec);
14840 rdev->cur_cmd_info = NULL;
14841 error:
14842 kfree(sar_spec);
14843 return err;
14844 }
14845
14846 static const struct genl_ops nl80211_ops[] = {
14847 {
14848 .cmd = NL80211_CMD_GET_WIPHY,
14849 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14850 .doit = nl80211_get_wiphy,
14851 .dumpit = nl80211_dump_wiphy,
14852 .done = nl80211_dump_wiphy_done,
14853 /* can be retrieved by unprivileged users */
14854 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14855 NL80211_FLAG_NEED_RTNL,
14856 },
14857 };
14858
14859 static const struct genl_small_ops nl80211_small_ops[] = {
14860 {
14861 .cmd = NL80211_CMD_SET_WIPHY,
14862 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14863 .doit = nl80211_set_wiphy,
14864 .flags = GENL_UNS_ADMIN_PERM,
14865 .internal_flags = NL80211_FLAG_NEED_RTNL,
14866 },
14867 {
14868 .cmd = NL80211_CMD_GET_INTERFACE,
14869 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14870 .doit = nl80211_get_interface,
14871 .dumpit = nl80211_dump_interface,
14872 /* can be retrieved by unprivileged users */
14873 .internal_flags = NL80211_FLAG_NEED_WDEV |
14874 NL80211_FLAG_NEED_RTNL,
14875 },
14876 {
14877 .cmd = NL80211_CMD_SET_INTERFACE,
14878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14879 .doit = nl80211_set_interface,
14880 .flags = GENL_UNS_ADMIN_PERM,
14881 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14882 NL80211_FLAG_NEED_RTNL,
14883 },
14884 {
14885 .cmd = NL80211_CMD_NEW_INTERFACE,
14886 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14887 .doit = nl80211_new_interface,
14888 .flags = GENL_UNS_ADMIN_PERM,
14889 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14890 NL80211_FLAG_NEED_RTNL,
14891 },
14892 {
14893 .cmd = NL80211_CMD_DEL_INTERFACE,
14894 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14895 .doit = nl80211_del_interface,
14896 .flags = GENL_UNS_ADMIN_PERM,
14897 .internal_flags = NL80211_FLAG_NEED_WDEV |
14898 NL80211_FLAG_NEED_RTNL,
14899 },
14900 {
14901 .cmd = NL80211_CMD_GET_KEY,
14902 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14903 .doit = nl80211_get_key,
14904 .flags = GENL_UNS_ADMIN_PERM,
14905 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14906 NL80211_FLAG_NEED_RTNL,
14907 },
14908 {
14909 .cmd = NL80211_CMD_SET_KEY,
14910 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14911 .doit = nl80211_set_key,
14912 .flags = GENL_UNS_ADMIN_PERM,
14913 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14914 NL80211_FLAG_NEED_RTNL |
14915 NL80211_FLAG_CLEAR_SKB,
14916 },
14917 {
14918 .cmd = NL80211_CMD_NEW_KEY,
14919 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14920 .doit = nl80211_new_key,
14921 .flags = GENL_UNS_ADMIN_PERM,
14922 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14923 NL80211_FLAG_NEED_RTNL |
14924 NL80211_FLAG_CLEAR_SKB,
14925 },
14926 {
14927 .cmd = NL80211_CMD_DEL_KEY,
14928 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14929 .doit = nl80211_del_key,
14930 .flags = GENL_UNS_ADMIN_PERM,
14931 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14932 NL80211_FLAG_NEED_RTNL,
14933 },
14934 {
14935 .cmd = NL80211_CMD_SET_BEACON,
14936 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14937 .flags = GENL_UNS_ADMIN_PERM,
14938 .doit = nl80211_set_beacon,
14939 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14940 NL80211_FLAG_NEED_RTNL,
14941 },
14942 {
14943 .cmd = NL80211_CMD_START_AP,
14944 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14945 .flags = GENL_UNS_ADMIN_PERM,
14946 .doit = nl80211_start_ap,
14947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14948 NL80211_FLAG_NEED_RTNL,
14949 },
14950 {
14951 .cmd = NL80211_CMD_STOP_AP,
14952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14953 .flags = GENL_UNS_ADMIN_PERM,
14954 .doit = nl80211_stop_ap,
14955 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14956 NL80211_FLAG_NEED_RTNL,
14957 },
14958 {
14959 .cmd = NL80211_CMD_GET_STATION,
14960 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14961 .doit = nl80211_get_station,
14962 .dumpit = nl80211_dump_station,
14963 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14964 NL80211_FLAG_NEED_RTNL,
14965 },
14966 {
14967 .cmd = NL80211_CMD_SET_STATION,
14968 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14969 .doit = nl80211_set_station,
14970 .flags = GENL_UNS_ADMIN_PERM,
14971 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14972 NL80211_FLAG_NEED_RTNL,
14973 },
14974 {
14975 .cmd = NL80211_CMD_NEW_STATION,
14976 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977 .doit = nl80211_new_station,
14978 .flags = GENL_UNS_ADMIN_PERM,
14979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14980 NL80211_FLAG_NEED_RTNL,
14981 },
14982 {
14983 .cmd = NL80211_CMD_DEL_STATION,
14984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985 .doit = nl80211_del_station,
14986 .flags = GENL_UNS_ADMIN_PERM,
14987 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14988 NL80211_FLAG_NEED_RTNL,
14989 },
14990 {
14991 .cmd = NL80211_CMD_GET_MPATH,
14992 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993 .doit = nl80211_get_mpath,
14994 .dumpit = nl80211_dump_mpath,
14995 .flags = GENL_UNS_ADMIN_PERM,
14996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14997 NL80211_FLAG_NEED_RTNL,
14998 },
14999 {
15000 .cmd = NL80211_CMD_GET_MPP,
15001 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15002 .doit = nl80211_get_mpp,
15003 .dumpit = nl80211_dump_mpp,
15004 .flags = GENL_UNS_ADMIN_PERM,
15005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15006 NL80211_FLAG_NEED_RTNL,
15007 },
15008 {
15009 .cmd = NL80211_CMD_SET_MPATH,
15010 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15011 .doit = nl80211_set_mpath,
15012 .flags = GENL_UNS_ADMIN_PERM,
15013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15014 NL80211_FLAG_NEED_RTNL,
15015 },
15016 {
15017 .cmd = NL80211_CMD_NEW_MPATH,
15018 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15019 .doit = nl80211_new_mpath,
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_DEL_MPATH,
15026 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027 .doit = nl80211_del_mpath,
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_SET_BSS,
15034 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15035 .doit = nl80211_set_bss,
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_GET_REG,
15042 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15043 .doit = nl80211_get_reg_do,
15044 .dumpit = nl80211_get_reg_dump,
15045 .internal_flags = NL80211_FLAG_NEED_RTNL,
15046 /* can be retrieved by unprivileged users */
15047 },
15048 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15049 {
15050 .cmd = NL80211_CMD_SET_REG,
15051 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15052 .doit = nl80211_set_reg,
15053 .flags = GENL_ADMIN_PERM,
15054 .internal_flags = NL80211_FLAG_NEED_RTNL,
15055 },
15056 #endif
15057 {
15058 .cmd = NL80211_CMD_REQ_SET_REG,
15059 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15060 .doit = nl80211_req_set_reg,
15061 .flags = GENL_ADMIN_PERM,
15062 },
15063 {
15064 .cmd = NL80211_CMD_RELOAD_REGDB,
15065 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15066 .doit = nl80211_reload_regdb,
15067 .flags = GENL_ADMIN_PERM,
15068 },
15069 {
15070 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15071 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15072 .doit = nl80211_get_mesh_config,
15073 /* can be retrieved by unprivileged users */
15074 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15075 NL80211_FLAG_NEED_RTNL,
15076 },
15077 {
15078 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15079 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15080 .doit = nl80211_update_mesh_config,
15081 .flags = GENL_UNS_ADMIN_PERM,
15082 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15083 NL80211_FLAG_NEED_RTNL,
15084 },
15085 {
15086 .cmd = NL80211_CMD_TRIGGER_SCAN,
15087 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15088 .doit = nl80211_trigger_scan,
15089 .flags = GENL_UNS_ADMIN_PERM,
15090 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15091 NL80211_FLAG_NEED_RTNL,
15092 },
15093 {
15094 .cmd = NL80211_CMD_ABORT_SCAN,
15095 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15096 .doit = nl80211_abort_scan,
15097 .flags = GENL_UNS_ADMIN_PERM,
15098 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15099 NL80211_FLAG_NEED_RTNL,
15100 },
15101 {
15102 .cmd = NL80211_CMD_GET_SCAN,
15103 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15104 .dumpit = nl80211_dump_scan,
15105 },
15106 {
15107 .cmd = NL80211_CMD_START_SCHED_SCAN,
15108 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109 .doit = nl80211_start_sched_scan,
15110 .flags = GENL_UNS_ADMIN_PERM,
15111 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15112 NL80211_FLAG_NEED_RTNL,
15113 },
15114 {
15115 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15116 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15117 .doit = nl80211_stop_sched_scan,
15118 .flags = GENL_UNS_ADMIN_PERM,
15119 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15120 NL80211_FLAG_NEED_RTNL,
15121 },
15122 {
15123 .cmd = NL80211_CMD_AUTHENTICATE,
15124 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15125 .doit = nl80211_authenticate,
15126 .flags = GENL_UNS_ADMIN_PERM,
15127 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15128 NL80211_FLAG_NEED_RTNL |
15129 NL80211_FLAG_CLEAR_SKB,
15130 },
15131 {
15132 .cmd = NL80211_CMD_ASSOCIATE,
15133 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15134 .doit = nl80211_associate,
15135 .flags = GENL_UNS_ADMIN_PERM,
15136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15137 NL80211_FLAG_NEED_RTNL |
15138 NL80211_FLAG_CLEAR_SKB,
15139 },
15140 {
15141 .cmd = NL80211_CMD_DEAUTHENTICATE,
15142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15143 .doit = nl80211_deauthenticate,
15144 .flags = GENL_UNS_ADMIN_PERM,
15145 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15146 NL80211_FLAG_NEED_RTNL,
15147 },
15148 {
15149 .cmd = NL80211_CMD_DISASSOCIATE,
15150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151 .doit = nl80211_disassociate,
15152 .flags = GENL_UNS_ADMIN_PERM,
15153 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15154 NL80211_FLAG_NEED_RTNL,
15155 },
15156 {
15157 .cmd = NL80211_CMD_JOIN_IBSS,
15158 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159 .doit = nl80211_join_ibss,
15160 .flags = GENL_UNS_ADMIN_PERM,
15161 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15162 NL80211_FLAG_NEED_RTNL,
15163 },
15164 {
15165 .cmd = NL80211_CMD_LEAVE_IBSS,
15166 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15167 .doit = nl80211_leave_ibss,
15168 .flags = GENL_UNS_ADMIN_PERM,
15169 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15170 NL80211_FLAG_NEED_RTNL,
15171 },
15172 #ifdef CONFIG_NL80211_TESTMODE
15173 {
15174 .cmd = NL80211_CMD_TESTMODE,
15175 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15176 .doit = nl80211_testmode_do,
15177 .dumpit = nl80211_testmode_dump,
15178 .flags = GENL_UNS_ADMIN_PERM,
15179 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15180 NL80211_FLAG_NEED_RTNL,
15181 },
15182 #endif
15183 {
15184 .cmd = NL80211_CMD_CONNECT,
15185 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15186 .doit = nl80211_connect,
15187 .flags = GENL_UNS_ADMIN_PERM,
15188 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15189 NL80211_FLAG_NEED_RTNL |
15190 NL80211_FLAG_CLEAR_SKB,
15191 },
15192 {
15193 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15194 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15195 .doit = nl80211_update_connect_params,
15196 .flags = GENL_ADMIN_PERM,
15197 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15198 NL80211_FLAG_NEED_RTNL |
15199 NL80211_FLAG_CLEAR_SKB,
15200 },
15201 {
15202 .cmd = NL80211_CMD_DISCONNECT,
15203 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15204 .doit = nl80211_disconnect,
15205 .flags = GENL_UNS_ADMIN_PERM,
15206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15207 NL80211_FLAG_NEED_RTNL,
15208 },
15209 {
15210 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15211 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15212 .doit = nl80211_wiphy_netns,
15213 .flags = GENL_UNS_ADMIN_PERM,
15214 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15215 NL80211_FLAG_NEED_RTNL,
15216 },
15217 {
15218 .cmd = NL80211_CMD_GET_SURVEY,
15219 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15220 .dumpit = nl80211_dump_survey,
15221 },
15222 {
15223 .cmd = NL80211_CMD_SET_PMKSA,
15224 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15225 .doit = nl80211_setdel_pmksa,
15226 .flags = GENL_UNS_ADMIN_PERM,
15227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15228 NL80211_FLAG_NEED_RTNL |
15229 NL80211_FLAG_CLEAR_SKB,
15230 },
15231 {
15232 .cmd = NL80211_CMD_DEL_PMKSA,
15233 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15234 .doit = nl80211_setdel_pmksa,
15235 .flags = GENL_UNS_ADMIN_PERM,
15236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15237 NL80211_FLAG_NEED_RTNL,
15238 },
15239 {
15240 .cmd = NL80211_CMD_FLUSH_PMKSA,
15241 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15242 .doit = nl80211_flush_pmksa,
15243 .flags = GENL_UNS_ADMIN_PERM,
15244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15245 NL80211_FLAG_NEED_RTNL,
15246 },
15247 {
15248 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15249 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15250 .doit = nl80211_remain_on_channel,
15251 .flags = GENL_UNS_ADMIN_PERM,
15252 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15253 NL80211_FLAG_NEED_RTNL,
15254 },
15255 {
15256 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15257 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15258 .doit = nl80211_cancel_remain_on_channel,
15259 .flags = GENL_UNS_ADMIN_PERM,
15260 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15261 NL80211_FLAG_NEED_RTNL,
15262 },
15263 {
15264 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15265 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15266 .doit = nl80211_set_tx_bitrate_mask,
15267 .flags = GENL_UNS_ADMIN_PERM,
15268 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15269 NL80211_FLAG_NEED_RTNL,
15270 },
15271 {
15272 .cmd = NL80211_CMD_REGISTER_FRAME,
15273 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15274 .doit = nl80211_register_mgmt,
15275 .flags = GENL_UNS_ADMIN_PERM,
15276 .internal_flags = NL80211_FLAG_NEED_WDEV |
15277 NL80211_FLAG_NEED_RTNL,
15278 },
15279 {
15280 .cmd = NL80211_CMD_FRAME,
15281 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15282 .doit = nl80211_tx_mgmt,
15283 .flags = GENL_UNS_ADMIN_PERM,
15284 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15285 NL80211_FLAG_NEED_RTNL,
15286 },
15287 {
15288 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15289 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15290 .doit = nl80211_tx_mgmt_cancel_wait,
15291 .flags = GENL_UNS_ADMIN_PERM,
15292 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15293 NL80211_FLAG_NEED_RTNL,
15294 },
15295 {
15296 .cmd = NL80211_CMD_SET_POWER_SAVE,
15297 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15298 .doit = nl80211_set_power_save,
15299 .flags = GENL_UNS_ADMIN_PERM,
15300 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15301 NL80211_FLAG_NEED_RTNL,
15302 },
15303 {
15304 .cmd = NL80211_CMD_GET_POWER_SAVE,
15305 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15306 .doit = nl80211_get_power_save,
15307 /* can be retrieved by unprivileged users */
15308 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15309 NL80211_FLAG_NEED_RTNL,
15310 },
15311 {
15312 .cmd = NL80211_CMD_SET_CQM,
15313 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15314 .doit = nl80211_set_cqm,
15315 .flags = GENL_UNS_ADMIN_PERM,
15316 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15317 NL80211_FLAG_NEED_RTNL,
15318 },
15319 {
15320 .cmd = NL80211_CMD_SET_CHANNEL,
15321 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15322 .doit = nl80211_set_channel,
15323 .flags = GENL_UNS_ADMIN_PERM,
15324 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15325 NL80211_FLAG_NEED_RTNL,
15326 },
15327 {
15328 .cmd = NL80211_CMD_JOIN_MESH,
15329 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15330 .doit = nl80211_join_mesh,
15331 .flags = GENL_UNS_ADMIN_PERM,
15332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15333 NL80211_FLAG_NEED_RTNL,
15334 },
15335 {
15336 .cmd = NL80211_CMD_LEAVE_MESH,
15337 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15338 .doit = nl80211_leave_mesh,
15339 .flags = GENL_UNS_ADMIN_PERM,
15340 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15341 NL80211_FLAG_NEED_RTNL,
15342 },
15343 {
15344 .cmd = NL80211_CMD_JOIN_OCB,
15345 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15346 .doit = nl80211_join_ocb,
15347 .flags = GENL_UNS_ADMIN_PERM,
15348 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15349 NL80211_FLAG_NEED_RTNL,
15350 },
15351 {
15352 .cmd = NL80211_CMD_LEAVE_OCB,
15353 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15354 .doit = nl80211_leave_ocb,
15355 .flags = GENL_UNS_ADMIN_PERM,
15356 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15357 NL80211_FLAG_NEED_RTNL,
15358 },
15359 #ifdef CONFIG_PM
15360 {
15361 .cmd = NL80211_CMD_GET_WOWLAN,
15362 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15363 .doit = nl80211_get_wowlan,
15364 /* can be retrieved by unprivileged users */
15365 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15366 NL80211_FLAG_NEED_RTNL,
15367 },
15368 {
15369 .cmd = NL80211_CMD_SET_WOWLAN,
15370 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15371 .doit = nl80211_set_wowlan,
15372 .flags = GENL_UNS_ADMIN_PERM,
15373 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15374 NL80211_FLAG_NEED_RTNL,
15375 },
15376 #endif
15377 {
15378 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15379 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15380 .doit = nl80211_set_rekey_data,
15381 .flags = GENL_UNS_ADMIN_PERM,
15382 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15383 NL80211_FLAG_NEED_RTNL |
15384 NL80211_FLAG_CLEAR_SKB,
15385 },
15386 {
15387 .cmd = NL80211_CMD_TDLS_MGMT,
15388 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15389 .doit = nl80211_tdls_mgmt,
15390 .flags = GENL_UNS_ADMIN_PERM,
15391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15392 NL80211_FLAG_NEED_RTNL,
15393 },
15394 {
15395 .cmd = NL80211_CMD_TDLS_OPER,
15396 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15397 .doit = nl80211_tdls_oper,
15398 .flags = GENL_UNS_ADMIN_PERM,
15399 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15400 NL80211_FLAG_NEED_RTNL,
15401 },
15402 {
15403 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15404 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15405 .doit = nl80211_register_unexpected_frame,
15406 .flags = GENL_UNS_ADMIN_PERM,
15407 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15408 NL80211_FLAG_NEED_RTNL,
15409 },
15410 {
15411 .cmd = NL80211_CMD_PROBE_CLIENT,
15412 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15413 .doit = nl80211_probe_client,
15414 .flags = GENL_UNS_ADMIN_PERM,
15415 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15416 NL80211_FLAG_NEED_RTNL,
15417 },
15418 {
15419 .cmd = NL80211_CMD_REGISTER_BEACONS,
15420 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15421 .doit = nl80211_register_beacons,
15422 .flags = GENL_UNS_ADMIN_PERM,
15423 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15424 NL80211_FLAG_NEED_RTNL,
15425 },
15426 {
15427 .cmd = NL80211_CMD_SET_NOACK_MAP,
15428 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15429 .doit = nl80211_set_noack_map,
15430 .flags = GENL_UNS_ADMIN_PERM,
15431 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15432 NL80211_FLAG_NEED_RTNL,
15433 },
15434 {
15435 .cmd = NL80211_CMD_START_P2P_DEVICE,
15436 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15437 .doit = nl80211_start_p2p_device,
15438 .flags = GENL_UNS_ADMIN_PERM,
15439 .internal_flags = NL80211_FLAG_NEED_WDEV |
15440 NL80211_FLAG_NEED_RTNL,
15441 },
15442 {
15443 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15444 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15445 .doit = nl80211_stop_p2p_device,
15446 .flags = GENL_UNS_ADMIN_PERM,
15447 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15448 NL80211_FLAG_NEED_RTNL,
15449 },
15450 {
15451 .cmd = NL80211_CMD_START_NAN,
15452 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15453 .doit = nl80211_start_nan,
15454 .flags = GENL_ADMIN_PERM,
15455 .internal_flags = NL80211_FLAG_NEED_WDEV |
15456 NL80211_FLAG_NEED_RTNL,
15457 },
15458 {
15459 .cmd = NL80211_CMD_STOP_NAN,
15460 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15461 .doit = nl80211_stop_nan,
15462 .flags = GENL_ADMIN_PERM,
15463 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15464 NL80211_FLAG_NEED_RTNL,
15465 },
15466 {
15467 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15468 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15469 .doit = nl80211_nan_add_func,
15470 .flags = GENL_ADMIN_PERM,
15471 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15472 NL80211_FLAG_NEED_RTNL,
15473 },
15474 {
15475 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15476 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15477 .doit = nl80211_nan_del_func,
15478 .flags = GENL_ADMIN_PERM,
15479 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15480 NL80211_FLAG_NEED_RTNL,
15481 },
15482 {
15483 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15484 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15485 .doit = nl80211_nan_change_config,
15486 .flags = GENL_ADMIN_PERM,
15487 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15488 NL80211_FLAG_NEED_RTNL,
15489 },
15490 {
15491 .cmd = NL80211_CMD_SET_MCAST_RATE,
15492 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15493 .doit = nl80211_set_mcast_rate,
15494 .flags = GENL_UNS_ADMIN_PERM,
15495 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15496 NL80211_FLAG_NEED_RTNL,
15497 },
15498 {
15499 .cmd = NL80211_CMD_SET_MAC_ACL,
15500 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15501 .doit = nl80211_set_mac_acl,
15502 .flags = GENL_UNS_ADMIN_PERM,
15503 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15504 NL80211_FLAG_NEED_RTNL,
15505 },
15506 {
15507 .cmd = NL80211_CMD_RADAR_DETECT,
15508 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15509 .doit = nl80211_start_radar_detection,
15510 .flags = GENL_UNS_ADMIN_PERM,
15511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15512 NL80211_FLAG_NEED_RTNL,
15513 },
15514 {
15515 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15516 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15517 .doit = nl80211_get_protocol_features,
15518 },
15519 {
15520 .cmd = NL80211_CMD_UPDATE_FT_IES,
15521 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15522 .doit = nl80211_update_ft_ies,
15523 .flags = GENL_UNS_ADMIN_PERM,
15524 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15525 NL80211_FLAG_NEED_RTNL,
15526 },
15527 {
15528 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15529 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15530 .doit = nl80211_crit_protocol_start,
15531 .flags = GENL_UNS_ADMIN_PERM,
15532 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15533 NL80211_FLAG_NEED_RTNL,
15534 },
15535 {
15536 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15537 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15538 .doit = nl80211_crit_protocol_stop,
15539 .flags = GENL_UNS_ADMIN_PERM,
15540 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15541 NL80211_FLAG_NEED_RTNL,
15542 },
15543 {
15544 .cmd = NL80211_CMD_GET_COALESCE,
15545 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15546 .doit = nl80211_get_coalesce,
15547 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15548 NL80211_FLAG_NEED_RTNL,
15549 },
15550 {
15551 .cmd = NL80211_CMD_SET_COALESCE,
15552 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15553 .doit = nl80211_set_coalesce,
15554 .flags = GENL_UNS_ADMIN_PERM,
15555 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15556 NL80211_FLAG_NEED_RTNL,
15557 },
15558 {
15559 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15560 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15561 .doit = nl80211_channel_switch,
15562 .flags = GENL_UNS_ADMIN_PERM,
15563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15564 NL80211_FLAG_NEED_RTNL,
15565 },
15566 {
15567 .cmd = NL80211_CMD_VENDOR,
15568 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15569 .doit = nl80211_vendor_cmd,
15570 .dumpit = nl80211_vendor_cmd_dump,
15571 .flags = GENL_UNS_ADMIN_PERM,
15572 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15573 NL80211_FLAG_NEED_RTNL |
15574 NL80211_FLAG_CLEAR_SKB,
15575 },
15576 {
15577 .cmd = NL80211_CMD_SET_QOS_MAP,
15578 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15579 .doit = nl80211_set_qos_map,
15580 .flags = GENL_UNS_ADMIN_PERM,
15581 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15582 NL80211_FLAG_NEED_RTNL,
15583 },
15584 {
15585 .cmd = NL80211_CMD_ADD_TX_TS,
15586 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15587 .doit = nl80211_add_tx_ts,
15588 .flags = GENL_UNS_ADMIN_PERM,
15589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15590 NL80211_FLAG_NEED_RTNL,
15591 },
15592 {
15593 .cmd = NL80211_CMD_DEL_TX_TS,
15594 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15595 .doit = nl80211_del_tx_ts,
15596 .flags = GENL_UNS_ADMIN_PERM,
15597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15598 NL80211_FLAG_NEED_RTNL,
15599 },
15600 {
15601 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15602 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15603 .doit = nl80211_tdls_channel_switch,
15604 .flags = GENL_UNS_ADMIN_PERM,
15605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15606 NL80211_FLAG_NEED_RTNL,
15607 },
15608 {
15609 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15610 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15611 .doit = nl80211_tdls_cancel_channel_switch,
15612 .flags = GENL_UNS_ADMIN_PERM,
15613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15614 NL80211_FLAG_NEED_RTNL,
15615 },
15616 {
15617 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15618 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15619 .doit = nl80211_set_multicast_to_unicast,
15620 .flags = GENL_UNS_ADMIN_PERM,
15621 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15622 NL80211_FLAG_NEED_RTNL,
15623 },
15624 {
15625 .cmd = NL80211_CMD_SET_PMK,
15626 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15627 .doit = nl80211_set_pmk,
15628 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15629 NL80211_FLAG_NEED_RTNL |
15630 NL80211_FLAG_CLEAR_SKB,
15631 },
15632 {
15633 .cmd = NL80211_CMD_DEL_PMK,
15634 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15635 .doit = nl80211_del_pmk,
15636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15637 NL80211_FLAG_NEED_RTNL,
15638 },
15639 {
15640 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15641 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15642 .doit = nl80211_external_auth,
15643 .flags = GENL_ADMIN_PERM,
15644 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15645 NL80211_FLAG_NEED_RTNL,
15646 },
15647 {
15648 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15649 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15650 .doit = nl80211_tx_control_port,
15651 .flags = GENL_UNS_ADMIN_PERM,
15652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15653 NL80211_FLAG_NEED_RTNL,
15654 },
15655 {
15656 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15657 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15658 .doit = nl80211_get_ftm_responder_stats,
15659 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15660 NL80211_FLAG_NEED_RTNL,
15661 },
15662 {
15663 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15664 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15665 .doit = nl80211_pmsr_start,
15666 .flags = GENL_UNS_ADMIN_PERM,
15667 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15668 NL80211_FLAG_NEED_RTNL,
15669 },
15670 {
15671 .cmd = NL80211_CMD_NOTIFY_RADAR,
15672 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15673 .doit = nl80211_notify_radar_detection,
15674 .flags = GENL_UNS_ADMIN_PERM,
15675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15676 NL80211_FLAG_NEED_RTNL,
15677 },
15678 {
15679 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15680 .doit = nl80211_update_owe_info,
15681 .flags = GENL_ADMIN_PERM,
15682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15683 NL80211_FLAG_NEED_RTNL,
15684 },
15685 {
15686 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15687 .doit = nl80211_probe_mesh_link,
15688 .flags = GENL_UNS_ADMIN_PERM,
15689 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15690 NL80211_FLAG_NEED_RTNL,
15691 },
15692 {
15693 .cmd = NL80211_CMD_SET_TID_CONFIG,
15694 .doit = nl80211_set_tid_config,
15695 .flags = GENL_UNS_ADMIN_PERM,
15696 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15697 NL80211_FLAG_NEED_RTNL,
15698 },
15699 {
15700 .cmd = NL80211_CMD_SET_SAR_SPECS,
15701 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15702 .doit = nl80211_set_sar_specs,
15703 .flags = GENL_UNS_ADMIN_PERM,
15704 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15705 NL80211_FLAG_NEED_RTNL,
15706 },
15707 };
15708
15709 static struct genl_family nl80211_fam __ro_after_init = {
15710 .name = NL80211_GENL_NAME, /* have users key off the name instead */
15711 .hdrsize = 0, /* no private header */
15712 .version = 1, /* no particular meaning now */
15713 .maxattr = NL80211_ATTR_MAX,
15714 .policy = nl80211_policy,
15715 .netnsok = true,
15716 .pre_doit = nl80211_pre_doit,
15717 .post_doit = nl80211_post_doit,
15718 .module = THIS_MODULE,
15719 .ops = nl80211_ops,
15720 .n_ops = ARRAY_SIZE(nl80211_ops),
15721 .small_ops = nl80211_small_ops,
15722 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15723 .mcgrps = nl80211_mcgrps,
15724 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15725 .parallel_ops = true,
15726 };
15727
15728 /* notification functions */
15729
15730 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15731 enum nl80211_commands cmd)
15732 {
15733 struct sk_buff *msg;
15734 struct nl80211_dump_wiphy_state state = {};
15735
15736 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15737 cmd != NL80211_CMD_DEL_WIPHY);
15738
15739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15740 if (!msg)
15741 return;
15742
15743 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15744 nlmsg_free(msg);
15745 return;
15746 }
15747
15748 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15749 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15750 }
15751
15752 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15753 struct wireless_dev *wdev,
15754 enum nl80211_commands cmd)
15755 {
15756 struct sk_buff *msg;
15757
15758 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15759 if (!msg)
15760 return;
15761
15762 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15763 nlmsg_free(msg);
15764 return;
15765 }
15766
15767 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15768 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15769 }
15770
15771 static int nl80211_add_scan_req(struct sk_buff *msg,
15772 struct cfg80211_registered_device *rdev)
15773 {
15774 struct cfg80211_scan_request *req = rdev->scan_req;
15775 struct nlattr *nest;
15776 int i;
15777 struct cfg80211_scan_info *info;
15778
15779 if (WARN_ON(!req))
15780 return 0;
15781
15782 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15783 if (!nest)
15784 goto nla_put_failure;
15785 for (i = 0; i < req->n_ssids; i++) {
15786 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15787 goto nla_put_failure;
15788 }
15789 nla_nest_end(msg, nest);
15790
15791 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15792 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15793 if (!nest)
15794 goto nla_put_failure;
15795 for (i = 0; i < req->n_channels; i++) {
15796 if (nla_put_u32(msg, i,
15797 ieee80211_channel_to_khz(req->channels[i])))
15798 goto nla_put_failure;
15799 }
15800 nla_nest_end(msg, nest);
15801 } else {
15802 nest = nla_nest_start_noflag(msg,
15803 NL80211_ATTR_SCAN_FREQUENCIES);
15804 if (!nest)
15805 goto nla_put_failure;
15806 for (i = 0; i < req->n_channels; i++) {
15807 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15808 goto nla_put_failure;
15809 }
15810 nla_nest_end(msg, nest);
15811 }
15812
15813 if (req->ie &&
15814 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15815 goto nla_put_failure;
15816
15817 if (req->flags &&
15818 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15819 goto nla_put_failure;
15820
15821 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15822 &rdev->scan_req->info;
15823 if (info->scan_start_tsf &&
15824 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15825 info->scan_start_tsf, NL80211_BSS_PAD) ||
15826 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15827 info->tsf_bssid)))
15828 goto nla_put_failure;
15829
15830 return 0;
15831 nla_put_failure:
15832 return -ENOBUFS;
15833 }
15834
15835 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15836 struct cfg80211_registered_device *rdev,
15837 struct wireless_dev *wdev,
15838 u32 portid, u32 seq, int flags,
15839 u32 cmd)
15840 {
15841 void *hdr;
15842
15843 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15844 if (!hdr)
15845 return -1;
15846
15847 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15848 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15849 wdev->netdev->ifindex)) ||
15850 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15851 NL80211_ATTR_PAD))
15852 goto nla_put_failure;
15853
15854 /* ignore errors and send incomplete event anyway */
15855 nl80211_add_scan_req(msg, rdev);
15856
15857 genlmsg_end(msg, hdr);
15858 return 0;
15859
15860 nla_put_failure:
15861 genlmsg_cancel(msg, hdr);
15862 return -EMSGSIZE;
15863 }
15864
15865 static int
15866 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15867 struct cfg80211_sched_scan_request *req, u32 cmd)
15868 {
15869 void *hdr;
15870
15871 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15872 if (!hdr)
15873 return -1;
15874
15875 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15876 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15877 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15878 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15879 NL80211_ATTR_PAD))
15880 goto nla_put_failure;
15881
15882 genlmsg_end(msg, hdr);
15883 return 0;
15884
15885 nla_put_failure:
15886 genlmsg_cancel(msg, hdr);
15887 return -EMSGSIZE;
15888 }
15889
15890 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15891 struct wireless_dev *wdev)
15892 {
15893 struct sk_buff *msg;
15894
15895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15896 if (!msg)
15897 return;
15898
15899 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15900 NL80211_CMD_TRIGGER_SCAN) < 0) {
15901 nlmsg_free(msg);
15902 return;
15903 }
15904
15905 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15906 NL80211_MCGRP_SCAN, GFP_KERNEL);
15907 }
15908
15909 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15910 struct wireless_dev *wdev, bool aborted)
15911 {
15912 struct sk_buff *msg;
15913
15914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15915 if (!msg)
15916 return NULL;
15917
15918 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15919 aborted ? NL80211_CMD_SCAN_ABORTED :
15920 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15921 nlmsg_free(msg);
15922 return NULL;
15923 }
15924
15925 return msg;
15926 }
15927
15928 /* send message created by nl80211_build_scan_msg() */
15929 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15930 struct sk_buff *msg)
15931 {
15932 if (!msg)
15933 return;
15934
15935 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15936 NL80211_MCGRP_SCAN, GFP_KERNEL);
15937 }
15938
15939 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15940 {
15941 struct sk_buff *msg;
15942
15943 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15944 if (!msg)
15945 return;
15946
15947 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15948 nlmsg_free(msg);
15949 return;
15950 }
15951
15952 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15953 NL80211_MCGRP_SCAN, GFP_KERNEL);
15954 }
15955
15956 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15957 struct regulatory_request *request)
15958 {
15959 /* Userspace can always count this one always being set */
15960 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15961 goto nla_put_failure;
15962
15963 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15964 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15965 NL80211_REGDOM_TYPE_WORLD))
15966 goto nla_put_failure;
15967 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15968 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15969 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15970 goto nla_put_failure;
15971 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15972 request->intersect) {
15973 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15974 NL80211_REGDOM_TYPE_INTERSECTION))
15975 goto nla_put_failure;
15976 } else {
15977 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15978 NL80211_REGDOM_TYPE_COUNTRY) ||
15979 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15980 request->alpha2))
15981 goto nla_put_failure;
15982 }
15983
15984 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15985 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15986
15987 if (wiphy &&
15988 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15989 goto nla_put_failure;
15990
15991 if (wiphy &&
15992 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15993 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15994 goto nla_put_failure;
15995 }
15996
15997 return true;
15998
15999 nla_put_failure:
16000 return false;
16001 }
16002
16003 /*
16004 * This can happen on global regulatory changes or device specific settings
16005 * based on custom regulatory domains.
16006 */
16007 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16008 struct regulatory_request *request)
16009 {
16010 struct sk_buff *msg;
16011 void *hdr;
16012
16013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16014 if (!msg)
16015 return;
16016
16017 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16018 if (!hdr)
16019 goto nla_put_failure;
16020
16021 if (!nl80211_reg_change_event_fill(msg, request))
16022 goto nla_put_failure;
16023
16024 genlmsg_end(msg, hdr);
16025
16026 rcu_read_lock();
16027 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16028 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16029 rcu_read_unlock();
16030
16031 return;
16032
16033 nla_put_failure:
16034 nlmsg_free(msg);
16035 }
16036
16037 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16038 struct net_device *netdev,
16039 const u8 *buf, size_t len,
16040 enum nl80211_commands cmd, gfp_t gfp,
16041 int uapsd_queues, const u8 *req_ies,
16042 size_t req_ies_len, bool reconnect)
16043 {
16044 struct sk_buff *msg;
16045 void *hdr;
16046
16047 msg = nlmsg_new(100 + len + req_ies_len, gfp);
16048 if (!msg)
16049 return;
16050
16051 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16052 if (!hdr) {
16053 nlmsg_free(msg);
16054 return;
16055 }
16056
16057 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16058 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16059 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16060 (req_ies &&
16061 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16062 goto nla_put_failure;
16063
16064 if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16065 goto nla_put_failure;
16066
16067 if (uapsd_queues >= 0) {
16068 struct nlattr *nla_wmm =
16069 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16070 if (!nla_wmm)
16071 goto nla_put_failure;
16072
16073 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16074 uapsd_queues))
16075 goto nla_put_failure;
16076
16077 nla_nest_end(msg, nla_wmm);
16078 }
16079
16080 genlmsg_end(msg, hdr);
16081
16082 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16083 NL80211_MCGRP_MLME, gfp);
16084 return;
16085
16086 nla_put_failure:
16087 nlmsg_free(msg);
16088 }
16089
16090 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16091 struct net_device *netdev, const u8 *buf,
16092 size_t len, gfp_t gfp)
16093 {
16094 nl80211_send_mlme_event(rdev, netdev, buf, len,
16095 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16096 false);
16097 }
16098
16099 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16100 struct net_device *netdev, const u8 *buf,
16101 size_t len, gfp_t gfp, int uapsd_queues,
16102 const u8 *req_ies, size_t req_ies_len)
16103 {
16104 nl80211_send_mlme_event(rdev, netdev, buf, len,
16105 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16106 req_ies, req_ies_len, false);
16107 }
16108
16109 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16110 struct net_device *netdev, const u8 *buf,
16111 size_t len, bool reconnect, gfp_t gfp)
16112 {
16113 nl80211_send_mlme_event(rdev, netdev, buf, len,
16114 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16115 reconnect);
16116 }
16117
16118 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16119 struct net_device *netdev, const u8 *buf,
16120 size_t len, bool reconnect, gfp_t gfp)
16121 {
16122 nl80211_send_mlme_event(rdev, netdev, buf, len,
16123 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16124 reconnect);
16125 }
16126
16127 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16128 size_t len)
16129 {
16130 struct wireless_dev *wdev = dev->ieee80211_ptr;
16131 struct wiphy *wiphy = wdev->wiphy;
16132 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16133 const struct ieee80211_mgmt *mgmt = (void *)buf;
16134 u32 cmd;
16135
16136 if (WARN_ON(len < 2))
16137 return;
16138
16139 if (ieee80211_is_deauth(mgmt->frame_control)) {
16140 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16141 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16142 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16143 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16144 if (wdev->unprot_beacon_reported &&
16145 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16146 return;
16147 cmd = NL80211_CMD_UNPROT_BEACON;
16148 wdev->unprot_beacon_reported = jiffies;
16149 } else {
16150 return;
16151 }
16152
16153 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16154 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16155 NULL, 0, false);
16156 }
16157 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16158
16159 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16160 struct net_device *netdev, int cmd,
16161 const u8 *addr, gfp_t gfp)
16162 {
16163 struct sk_buff *msg;
16164 void *hdr;
16165
16166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16167 if (!msg)
16168 return;
16169
16170 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16171 if (!hdr) {
16172 nlmsg_free(msg);
16173 return;
16174 }
16175
16176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16178 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16179 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16180 goto nla_put_failure;
16181
16182 genlmsg_end(msg, hdr);
16183
16184 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16185 NL80211_MCGRP_MLME, gfp);
16186 return;
16187
16188 nla_put_failure:
16189 nlmsg_free(msg);
16190 }
16191
16192 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16193 struct net_device *netdev, const u8 *addr,
16194 gfp_t gfp)
16195 {
16196 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16197 addr, gfp);
16198 }
16199
16200 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16201 struct net_device *netdev, const u8 *addr,
16202 gfp_t gfp)
16203 {
16204 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16205 addr, gfp);
16206 }
16207
16208 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16209 struct net_device *netdev,
16210 struct cfg80211_connect_resp_params *cr,
16211 gfp_t gfp)
16212 {
16213 struct sk_buff *msg;
16214 void *hdr;
16215
16216 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16217 cr->fils.kek_len + cr->fils.pmk_len +
16218 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16219 if (!msg)
16220 return;
16221
16222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16223 if (!hdr) {
16224 nlmsg_free(msg);
16225 return;
16226 }
16227
16228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16229 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16230 (cr->bssid &&
16231 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16232 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16233 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16234 cr->status) ||
16235 (cr->status < 0 &&
16236 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16237 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16238 cr->timeout_reason))) ||
16239 (cr->req_ie &&
16240 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16241 (cr->resp_ie &&
16242 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16243 cr->resp_ie)) ||
16244 (cr->fils.update_erp_next_seq_num &&
16245 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16246 cr->fils.erp_next_seq_num)) ||
16247 (cr->status == WLAN_STATUS_SUCCESS &&
16248 ((cr->fils.kek &&
16249 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16250 cr->fils.kek)) ||
16251 (cr->fils.pmk &&
16252 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16253 (cr->fils.pmkid &&
16254 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16255 goto nla_put_failure;
16256
16257 genlmsg_end(msg, hdr);
16258
16259 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16260 NL80211_MCGRP_MLME, gfp);
16261 return;
16262
16263 nla_put_failure:
16264 nlmsg_free(msg);
16265 }
16266
16267 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16268 struct net_device *netdev,
16269 struct cfg80211_roam_info *info, gfp_t gfp)
16270 {
16271 struct sk_buff *msg;
16272 void *hdr;
16273 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16274
16275 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16276 info->fils.kek_len + info->fils.pmk_len +
16277 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16278 if (!msg)
16279 return;
16280
16281 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16282 if (!hdr) {
16283 nlmsg_free(msg);
16284 return;
16285 }
16286
16287 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16288 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16289 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16290 (info->req_ie &&
16291 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16292 info->req_ie)) ||
16293 (info->resp_ie &&
16294 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16295 info->resp_ie)) ||
16296 (info->fils.update_erp_next_seq_num &&
16297 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16298 info->fils.erp_next_seq_num)) ||
16299 (info->fils.kek &&
16300 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16301 info->fils.kek)) ||
16302 (info->fils.pmk &&
16303 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16304 (info->fils.pmkid &&
16305 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16306 goto nla_put_failure;
16307
16308 genlmsg_end(msg, hdr);
16309
16310 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16311 NL80211_MCGRP_MLME, gfp);
16312 return;
16313
16314 nla_put_failure:
16315 nlmsg_free(msg);
16316 }
16317
16318 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16319 struct net_device *netdev, const u8 *bssid)
16320 {
16321 struct sk_buff *msg;
16322 void *hdr;
16323
16324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16325 if (!msg)
16326 return;
16327
16328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16329 if (!hdr) {
16330 nlmsg_free(msg);
16331 return;
16332 }
16333
16334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16336 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16337 goto nla_put_failure;
16338
16339 genlmsg_end(msg, hdr);
16340
16341 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16342 NL80211_MCGRP_MLME, GFP_KERNEL);
16343 return;
16344
16345 nla_put_failure:
16346 nlmsg_free(msg);
16347 }
16348
16349 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16350 struct net_device *netdev, u16 reason,
16351 const u8 *ie, size_t ie_len, bool from_ap)
16352 {
16353 struct sk_buff *msg;
16354 void *hdr;
16355
16356 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16357 if (!msg)
16358 return;
16359
16360 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16361 if (!hdr) {
16362 nlmsg_free(msg);
16363 return;
16364 }
16365
16366 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16367 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16368 (reason &&
16369 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16370 (from_ap &&
16371 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16372 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16373 goto nla_put_failure;
16374
16375 genlmsg_end(msg, hdr);
16376
16377 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16378 NL80211_MCGRP_MLME, GFP_KERNEL);
16379 return;
16380
16381 nla_put_failure:
16382 nlmsg_free(msg);
16383 }
16384
16385 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16386 struct net_device *netdev, const u8 *bssid,
16387 gfp_t gfp)
16388 {
16389 struct sk_buff *msg;
16390 void *hdr;
16391
16392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16393 if (!msg)
16394 return;
16395
16396 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16397 if (!hdr) {
16398 nlmsg_free(msg);
16399 return;
16400 }
16401
16402 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16403 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16404 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16405 goto nla_put_failure;
16406
16407 genlmsg_end(msg, hdr);
16408
16409 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16410 NL80211_MCGRP_MLME, gfp);
16411 return;
16412
16413 nla_put_failure:
16414 nlmsg_free(msg);
16415 }
16416
16417 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16418 const u8 *ie, u8 ie_len,
16419 int sig_dbm, gfp_t gfp)
16420 {
16421 struct wireless_dev *wdev = dev->ieee80211_ptr;
16422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16423 struct sk_buff *msg;
16424 void *hdr;
16425
16426 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16427 return;
16428
16429 trace_cfg80211_notify_new_peer_candidate(dev, addr);
16430
16431 msg = nlmsg_new(100 + ie_len, gfp);
16432 if (!msg)
16433 return;
16434
16435 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16436 if (!hdr) {
16437 nlmsg_free(msg);
16438 return;
16439 }
16440
16441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16442 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16443 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16444 (ie_len && ie &&
16445 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16446 (sig_dbm &&
16447 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16448 goto nla_put_failure;
16449
16450 genlmsg_end(msg, hdr);
16451
16452 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16453 NL80211_MCGRP_MLME, gfp);
16454 return;
16455
16456 nla_put_failure:
16457 nlmsg_free(msg);
16458 }
16459 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16460
16461 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16462 struct net_device *netdev, const u8 *addr,
16463 enum nl80211_key_type key_type, int key_id,
16464 const u8 *tsc, gfp_t gfp)
16465 {
16466 struct sk_buff *msg;
16467 void *hdr;
16468
16469 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16470 if (!msg)
16471 return;
16472
16473 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16474 if (!hdr) {
16475 nlmsg_free(msg);
16476 return;
16477 }
16478
16479 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16480 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16481 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16482 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16483 (key_id != -1 &&
16484 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16485 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16486 goto nla_put_failure;
16487
16488 genlmsg_end(msg, hdr);
16489
16490 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16491 NL80211_MCGRP_MLME, gfp);
16492 return;
16493
16494 nla_put_failure:
16495 nlmsg_free(msg);
16496 }
16497
16498 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16499 struct ieee80211_channel *channel_before,
16500 struct ieee80211_channel *channel_after)
16501 {
16502 struct sk_buff *msg;
16503 void *hdr;
16504 struct nlattr *nl_freq;
16505
16506 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16507 if (!msg)
16508 return;
16509
16510 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16511 if (!hdr) {
16512 nlmsg_free(msg);
16513 return;
16514 }
16515
16516 /*
16517 * Since we are applying the beacon hint to a wiphy we know its
16518 * wiphy_idx is valid
16519 */
16520 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16521 goto nla_put_failure;
16522
16523 /* Before */
16524 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16525 if (!nl_freq)
16526 goto nla_put_failure;
16527
16528 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16529 goto nla_put_failure;
16530 nla_nest_end(msg, nl_freq);
16531
16532 /* After */
16533 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16534 if (!nl_freq)
16535 goto nla_put_failure;
16536
16537 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16538 goto nla_put_failure;
16539 nla_nest_end(msg, nl_freq);
16540
16541 genlmsg_end(msg, hdr);
16542
16543 rcu_read_lock();
16544 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16545 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16546 rcu_read_unlock();
16547
16548 return;
16549
16550 nla_put_failure:
16551 nlmsg_free(msg);
16552 }
16553
16554 static void nl80211_send_remain_on_chan_event(
16555 int cmd, struct cfg80211_registered_device *rdev,
16556 struct wireless_dev *wdev, u64 cookie,
16557 struct ieee80211_channel *chan,
16558 unsigned int duration, gfp_t gfp)
16559 {
16560 struct sk_buff *msg;
16561 void *hdr;
16562
16563 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16564 if (!msg)
16565 return;
16566
16567 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16568 if (!hdr) {
16569 nlmsg_free(msg);
16570 return;
16571 }
16572
16573 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16574 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16575 wdev->netdev->ifindex)) ||
16576 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16577 NL80211_ATTR_PAD) ||
16578 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16579 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16580 NL80211_CHAN_NO_HT) ||
16581 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16582 NL80211_ATTR_PAD))
16583 goto nla_put_failure;
16584
16585 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16586 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16587 goto nla_put_failure;
16588
16589 genlmsg_end(msg, hdr);
16590
16591 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16592 NL80211_MCGRP_MLME, gfp);
16593 return;
16594
16595 nla_put_failure:
16596 nlmsg_free(msg);
16597 }
16598
16599 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16600 struct ieee80211_channel *chan,
16601 unsigned int duration, gfp_t gfp)
16602 {
16603 struct wiphy *wiphy = wdev->wiphy;
16604 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16605
16606 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16607 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16608 rdev, wdev, cookie, chan,
16609 duration, gfp);
16610 }
16611 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16612
16613 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16614 struct ieee80211_channel *chan,
16615 gfp_t gfp)
16616 {
16617 struct wiphy *wiphy = wdev->wiphy;
16618 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16619
16620 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16621 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16622 rdev, wdev, cookie, chan, 0, gfp);
16623 }
16624 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16625
16626 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16627 struct ieee80211_channel *chan,
16628 gfp_t gfp)
16629 {
16630 struct wiphy *wiphy = wdev->wiphy;
16631 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16632
16633 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16634 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16635 rdev, wdev, cookie, chan, 0, gfp);
16636 }
16637 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16638
16639 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16640 struct station_info *sinfo, gfp_t gfp)
16641 {
16642 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16643 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16644 struct sk_buff *msg;
16645
16646 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16647
16648 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16649 if (!msg)
16650 return;
16651
16652 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16653 rdev, dev, mac_addr, sinfo) < 0) {
16654 nlmsg_free(msg);
16655 return;
16656 }
16657
16658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16659 NL80211_MCGRP_MLME, gfp);
16660 }
16661 EXPORT_SYMBOL(cfg80211_new_sta);
16662
16663 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16664 struct station_info *sinfo, gfp_t gfp)
16665 {
16666 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16667 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16668 struct sk_buff *msg;
16669 struct station_info empty_sinfo = {};
16670
16671 if (!sinfo)
16672 sinfo = &empty_sinfo;
16673
16674 trace_cfg80211_del_sta(dev, mac_addr);
16675
16676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16677 if (!msg) {
16678 cfg80211_sinfo_release_content(sinfo);
16679 return;
16680 }
16681
16682 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16683 rdev, dev, mac_addr, sinfo) < 0) {
16684 nlmsg_free(msg);
16685 return;
16686 }
16687
16688 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16689 NL80211_MCGRP_MLME, gfp);
16690 }
16691 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16692
16693 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16694 enum nl80211_connect_failed_reason reason,
16695 gfp_t gfp)
16696 {
16697 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16698 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16699 struct sk_buff *msg;
16700 void *hdr;
16701
16702 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16703 if (!msg)
16704 return;
16705
16706 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16707 if (!hdr) {
16708 nlmsg_free(msg);
16709 return;
16710 }
16711
16712 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16713 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16714 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16715 goto nla_put_failure;
16716
16717 genlmsg_end(msg, hdr);
16718
16719 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16720 NL80211_MCGRP_MLME, gfp);
16721 return;
16722
16723 nla_put_failure:
16724 nlmsg_free(msg);
16725 }
16726 EXPORT_SYMBOL(cfg80211_conn_failed);
16727
16728 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16729 const u8 *addr, gfp_t gfp)
16730 {
16731 struct wireless_dev *wdev = dev->ieee80211_ptr;
16732 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16733 struct sk_buff *msg;
16734 void *hdr;
16735 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16736
16737 if (!nlportid)
16738 return false;
16739
16740 msg = nlmsg_new(100, gfp);
16741 if (!msg)
16742 return true;
16743
16744 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16745 if (!hdr) {
16746 nlmsg_free(msg);
16747 return true;
16748 }
16749
16750 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16751 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16752 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16753 goto nla_put_failure;
16754
16755 genlmsg_end(msg, hdr);
16756 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16757 return true;
16758
16759 nla_put_failure:
16760 nlmsg_free(msg);
16761 return true;
16762 }
16763
16764 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16765 const u8 *addr, gfp_t gfp)
16766 {
16767 struct wireless_dev *wdev = dev->ieee80211_ptr;
16768 bool ret;
16769
16770 trace_cfg80211_rx_spurious_frame(dev, addr);
16771
16772 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16773 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16774 trace_cfg80211_return_bool(false);
16775 return false;
16776 }
16777 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16778 addr, gfp);
16779 trace_cfg80211_return_bool(ret);
16780 return ret;
16781 }
16782 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16783
16784 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16785 const u8 *addr, gfp_t gfp)
16786 {
16787 struct wireless_dev *wdev = dev->ieee80211_ptr;
16788 bool ret;
16789
16790 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16791
16792 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16793 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16794 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16795 trace_cfg80211_return_bool(false);
16796 return false;
16797 }
16798 ret = __nl80211_unexpected_frame(dev,
16799 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16800 addr, gfp);
16801 trace_cfg80211_return_bool(ret);
16802 return ret;
16803 }
16804 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16805
16806 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16807 struct wireless_dev *wdev, u32 nlportid,
16808 int freq, int sig_dbm,
16809 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16810 {
16811 struct net_device *netdev = wdev->netdev;
16812 struct sk_buff *msg;
16813 void *hdr;
16814
16815 msg = nlmsg_new(100 + len, gfp);
16816 if (!msg)
16817 return -ENOMEM;
16818
16819 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16820 if (!hdr) {
16821 nlmsg_free(msg);
16822 return -ENOMEM;
16823 }
16824
16825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16826 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16827 netdev->ifindex)) ||
16828 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16829 NL80211_ATTR_PAD) ||
16830 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16831 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16832 (sig_dbm &&
16833 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16834 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16835 (flags &&
16836 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16837 goto nla_put_failure;
16838
16839 genlmsg_end(msg, hdr);
16840
16841 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16842
16843 nla_put_failure:
16844 nlmsg_free(msg);
16845 return -ENOBUFS;
16846 }
16847
16848 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16849 const u8 *buf, size_t len, bool ack,
16850 gfp_t gfp, enum nl80211_commands command)
16851 {
16852 struct wiphy *wiphy = wdev->wiphy;
16853 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16854 struct net_device *netdev = wdev->netdev;
16855 struct sk_buff *msg;
16856 void *hdr;
16857
16858 if (command == NL80211_CMD_FRAME_TX_STATUS)
16859 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16860 else
16861 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16862
16863 msg = nlmsg_new(100 + len, gfp);
16864 if (!msg)
16865 return;
16866
16867 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16868 if (!hdr) {
16869 nlmsg_free(msg);
16870 return;
16871 }
16872
16873 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16874 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16875 netdev->ifindex)) ||
16876 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16877 NL80211_ATTR_PAD) ||
16878 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16879 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16880 NL80211_ATTR_PAD) ||
16881 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16882 goto nla_put_failure;
16883
16884 genlmsg_end(msg, hdr);
16885
16886 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16887 NL80211_MCGRP_MLME, gfp);
16888 return;
16889
16890 nla_put_failure:
16891 nlmsg_free(msg);
16892 }
16893
16894 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16895 const u8 *buf, size_t len, bool ack,
16896 gfp_t gfp)
16897 {
16898 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16899 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16900 }
16901 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16902
16903 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16904 const u8 *buf, size_t len, bool ack, gfp_t gfp)
16905 {
16906 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16907 NL80211_CMD_FRAME_TX_STATUS);
16908 }
16909 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16910
16911 static int __nl80211_rx_control_port(struct net_device *dev,
16912 struct sk_buff *skb,
16913 bool unencrypted, gfp_t gfp)
16914 {
16915 struct wireless_dev *wdev = dev->ieee80211_ptr;
16916 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16917 struct ethhdr *ehdr = eth_hdr(skb);
16918 const u8 *addr = ehdr->h_source;
16919 u16 proto = be16_to_cpu(skb->protocol);
16920 struct sk_buff *msg;
16921 void *hdr;
16922 struct nlattr *frame;
16923
16924 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16925
16926 if (!nlportid)
16927 return -ENOENT;
16928
16929 msg = nlmsg_new(100 + skb->len, gfp);
16930 if (!msg)
16931 return -ENOMEM;
16932
16933 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16934 if (!hdr) {
16935 nlmsg_free(msg);
16936 return -ENOBUFS;
16937 }
16938
16939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16941 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16942 NL80211_ATTR_PAD) ||
16943 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16944 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16945 (unencrypted && nla_put_flag(msg,
16946 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16947 goto nla_put_failure;
16948
16949 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16950 if (!frame)
16951 goto nla_put_failure;
16952
16953 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16954 genlmsg_end(msg, hdr);
16955
16956 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16957
16958 nla_put_failure:
16959 nlmsg_free(msg);
16960 return -ENOBUFS;
16961 }
16962
16963 bool cfg80211_rx_control_port(struct net_device *dev,
16964 struct sk_buff *skb, bool unencrypted)
16965 {
16966 int ret;
16967
16968 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16969 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16970 trace_cfg80211_return_bool(ret == 0);
16971 return ret == 0;
16972 }
16973 EXPORT_SYMBOL(cfg80211_rx_control_port);
16974
16975 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16976 const char *mac, gfp_t gfp)
16977 {
16978 struct wireless_dev *wdev = dev->ieee80211_ptr;
16979 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16980 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16981 void **cb;
16982
16983 if (!msg)
16984 return NULL;
16985
16986 cb = (void **)msg->cb;
16987
16988 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16989 if (!cb[0]) {
16990 nlmsg_free(msg);
16991 return NULL;
16992 }
16993
16994 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16995 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16996 goto nla_put_failure;
16997
16998 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16999 goto nla_put_failure;
17000
17001 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17002 if (!cb[1])
17003 goto nla_put_failure;
17004
17005 cb[2] = rdev;
17006
17007 return msg;
17008 nla_put_failure:
17009 nlmsg_free(msg);
17010 return NULL;
17011 }
17012
17013 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17014 {
17015 void **cb = (void **)msg->cb;
17016 struct cfg80211_registered_device *rdev = cb[2];
17017
17018 nla_nest_end(msg, cb[1]);
17019 genlmsg_end(msg, cb[0]);
17020
17021 memset(msg->cb, 0, sizeof(msg->cb));
17022
17023 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17024 NL80211_MCGRP_MLME, gfp);
17025 }
17026
17027 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17028 enum nl80211_cqm_rssi_threshold_event rssi_event,
17029 s32 rssi_level, gfp_t gfp)
17030 {
17031 struct sk_buff *msg;
17032 struct wireless_dev *wdev = dev->ieee80211_ptr;
17033 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17034
17035 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17036
17037 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17038 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17039 return;
17040
17041 if (wdev->cqm_config) {
17042 wdev->cqm_config->last_rssi_event_value = rssi_level;
17043
17044 cfg80211_cqm_rssi_update(rdev, dev);
17045
17046 if (rssi_level == 0)
17047 rssi_level = wdev->cqm_config->last_rssi_event_value;
17048 }
17049
17050 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17051 if (!msg)
17052 return;
17053
17054 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17055 rssi_event))
17056 goto nla_put_failure;
17057
17058 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17059 rssi_level))
17060 goto nla_put_failure;
17061
17062 cfg80211_send_cqm(msg, gfp);
17063
17064 return;
17065
17066 nla_put_failure:
17067 nlmsg_free(msg);
17068 }
17069 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17070
17071 void cfg80211_cqm_txe_notify(struct net_device *dev,
17072 const u8 *peer, u32 num_packets,
17073 u32 rate, u32 intvl, gfp_t gfp)
17074 {
17075 struct sk_buff *msg;
17076
17077 msg = cfg80211_prepare_cqm(dev, peer, gfp);
17078 if (!msg)
17079 return;
17080
17081 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17082 goto nla_put_failure;
17083
17084 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17085 goto nla_put_failure;
17086
17087 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17088 goto nla_put_failure;
17089
17090 cfg80211_send_cqm(msg, gfp);
17091 return;
17092
17093 nla_put_failure:
17094 nlmsg_free(msg);
17095 }
17096 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17097
17098 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17099 const u8 *peer, u32 num_packets, gfp_t gfp)
17100 {
17101 struct sk_buff *msg;
17102
17103 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17104
17105 msg = cfg80211_prepare_cqm(dev, peer, gfp);
17106 if (!msg)
17107 return;
17108
17109 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17110 goto nla_put_failure;
17111
17112 cfg80211_send_cqm(msg, gfp);
17113 return;
17114
17115 nla_put_failure:
17116 nlmsg_free(msg);
17117 }
17118 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17119
17120 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17121 {
17122 struct sk_buff *msg;
17123
17124 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17125 if (!msg)
17126 return;
17127
17128 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17129 goto nla_put_failure;
17130
17131 cfg80211_send_cqm(msg, gfp);
17132 return;
17133
17134 nla_put_failure:
17135 nlmsg_free(msg);
17136 }
17137 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17138
17139 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17140 struct net_device *netdev, const u8 *bssid,
17141 const u8 *replay_ctr, gfp_t gfp)
17142 {
17143 struct sk_buff *msg;
17144 struct nlattr *rekey_attr;
17145 void *hdr;
17146
17147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17148 if (!msg)
17149 return;
17150
17151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17152 if (!hdr) {
17153 nlmsg_free(msg);
17154 return;
17155 }
17156
17157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17158 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17159 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17160 goto nla_put_failure;
17161
17162 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17163 if (!rekey_attr)
17164 goto nla_put_failure;
17165
17166 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17167 NL80211_REPLAY_CTR_LEN, replay_ctr))
17168 goto nla_put_failure;
17169
17170 nla_nest_end(msg, rekey_attr);
17171
17172 genlmsg_end(msg, hdr);
17173
17174 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17175 NL80211_MCGRP_MLME, gfp);
17176 return;
17177
17178 nla_put_failure:
17179 nlmsg_free(msg);
17180 }
17181
17182 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17183 const u8 *replay_ctr, gfp_t gfp)
17184 {
17185 struct wireless_dev *wdev = dev->ieee80211_ptr;
17186 struct wiphy *wiphy = wdev->wiphy;
17187 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17188
17189 trace_cfg80211_gtk_rekey_notify(dev, bssid);
17190 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17191 }
17192 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17193
17194 static void
17195 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17196 struct net_device *netdev, int index,
17197 const u8 *bssid, bool preauth, gfp_t gfp)
17198 {
17199 struct sk_buff *msg;
17200 struct nlattr *attr;
17201 void *hdr;
17202
17203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17204 if (!msg)
17205 return;
17206
17207 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17208 if (!hdr) {
17209 nlmsg_free(msg);
17210 return;
17211 }
17212
17213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17214 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17215 goto nla_put_failure;
17216
17217 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17218 if (!attr)
17219 goto nla_put_failure;
17220
17221 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17222 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17223 (preauth &&
17224 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17225 goto nla_put_failure;
17226
17227 nla_nest_end(msg, attr);
17228
17229 genlmsg_end(msg, hdr);
17230
17231 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17232 NL80211_MCGRP_MLME, gfp);
17233 return;
17234
17235 nla_put_failure:
17236 nlmsg_free(msg);
17237 }
17238
17239 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17240 const u8 *bssid, bool preauth, gfp_t gfp)
17241 {
17242 struct wireless_dev *wdev = dev->ieee80211_ptr;
17243 struct wiphy *wiphy = wdev->wiphy;
17244 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17245
17246 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17247 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17248 }
17249 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17250
17251 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17252 struct net_device *netdev,
17253 struct cfg80211_chan_def *chandef,
17254 gfp_t gfp,
17255 enum nl80211_commands notif,
17256 u8 count, bool quiet)
17257 {
17258 struct sk_buff *msg;
17259 void *hdr;
17260
17261 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17262 if (!msg)
17263 return;
17264
17265 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17266 if (!hdr) {
17267 nlmsg_free(msg);
17268 return;
17269 }
17270
17271 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17272 goto nla_put_failure;
17273
17274 if (nl80211_send_chandef(msg, chandef))
17275 goto nla_put_failure;
17276
17277 if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17278 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17279 goto nla_put_failure;
17280 if (quiet &&
17281 nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17282 goto nla_put_failure;
17283 }
17284
17285 genlmsg_end(msg, hdr);
17286
17287 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17288 NL80211_MCGRP_MLME, gfp);
17289 return;
17290
17291 nla_put_failure:
17292 nlmsg_free(msg);
17293 }
17294
17295 void cfg80211_ch_switch_notify(struct net_device *dev,
17296 struct cfg80211_chan_def *chandef)
17297 {
17298 struct wireless_dev *wdev = dev->ieee80211_ptr;
17299 struct wiphy *wiphy = wdev->wiphy;
17300 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17301
17302 ASSERT_WDEV_LOCK(wdev);
17303
17304 trace_cfg80211_ch_switch_notify(dev, chandef);
17305
17306 wdev->chandef = *chandef;
17307 wdev->preset_chandef = *chandef;
17308
17309 if (wdev->iftype == NL80211_IFTYPE_STATION &&
17310 !WARN_ON(!wdev->current_bss))
17311 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17312
17313 cfg80211_sched_dfs_chan_update(rdev);
17314
17315 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17316 NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17317 }
17318 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17319
17320 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17321 struct cfg80211_chan_def *chandef,
17322 u8 count, bool quiet)
17323 {
17324 struct wireless_dev *wdev = dev->ieee80211_ptr;
17325 struct wiphy *wiphy = wdev->wiphy;
17326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17327
17328 trace_cfg80211_ch_switch_started_notify(dev, chandef);
17329
17330 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17331 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17332 count, quiet);
17333 }
17334 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17335
17336 void
17337 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17338 const struct cfg80211_chan_def *chandef,
17339 enum nl80211_radar_event event,
17340 struct net_device *netdev, gfp_t gfp)
17341 {
17342 struct sk_buff *msg;
17343 void *hdr;
17344
17345 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17346 if (!msg)
17347 return;
17348
17349 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17350 if (!hdr) {
17351 nlmsg_free(msg);
17352 return;
17353 }
17354
17355 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17356 goto nla_put_failure;
17357
17358 /* NOP and radar events don't need a netdev parameter */
17359 if (netdev) {
17360 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17361
17362 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17363 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17364 NL80211_ATTR_PAD))
17365 goto nla_put_failure;
17366 }
17367
17368 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17369 goto nla_put_failure;
17370
17371 if (nl80211_send_chandef(msg, chandef))
17372 goto nla_put_failure;
17373
17374 genlmsg_end(msg, hdr);
17375
17376 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17377 NL80211_MCGRP_MLME, gfp);
17378 return;
17379
17380 nla_put_failure:
17381 nlmsg_free(msg);
17382 }
17383
17384 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17385 struct sta_opmode_info *sta_opmode,
17386 gfp_t gfp)
17387 {
17388 struct sk_buff *msg;
17389 struct wireless_dev *wdev = dev->ieee80211_ptr;
17390 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17391 void *hdr;
17392
17393 if (WARN_ON(!mac))
17394 return;
17395
17396 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17397 if (!msg)
17398 return;
17399
17400 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17401 if (!hdr) {
17402 nlmsg_free(msg);
17403 return;
17404 }
17405
17406 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17407 goto nla_put_failure;
17408
17409 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17410 goto nla_put_failure;
17411
17412 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17413 goto nla_put_failure;
17414
17415 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17416 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17417 goto nla_put_failure;
17418
17419 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17420 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17421 goto nla_put_failure;
17422
17423 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17424 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17425 goto nla_put_failure;
17426
17427 genlmsg_end(msg, hdr);
17428
17429 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17430 NL80211_MCGRP_MLME, gfp);
17431
17432 return;
17433
17434 nla_put_failure:
17435 nlmsg_free(msg);
17436 }
17437 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17438
17439 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17440 u64 cookie, bool acked, s32 ack_signal,
17441 bool is_valid_ack_signal, gfp_t gfp)
17442 {
17443 struct wireless_dev *wdev = dev->ieee80211_ptr;
17444 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17445 struct sk_buff *msg;
17446 void *hdr;
17447
17448 trace_cfg80211_probe_status(dev, addr, cookie, acked);
17449
17450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17451
17452 if (!msg)
17453 return;
17454
17455 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17456 if (!hdr) {
17457 nlmsg_free(msg);
17458 return;
17459 }
17460
17461 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17462 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17463 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17464 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17465 NL80211_ATTR_PAD) ||
17466 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17467 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17468 ack_signal)))
17469 goto nla_put_failure;
17470
17471 genlmsg_end(msg, hdr);
17472
17473 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17474 NL80211_MCGRP_MLME, gfp);
17475 return;
17476
17477 nla_put_failure:
17478 nlmsg_free(msg);
17479 }
17480 EXPORT_SYMBOL(cfg80211_probe_status);
17481
17482 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17483 size_t len, int freq, int sig_dbm)
17484 {
17485 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17486 struct sk_buff *msg;
17487 void *hdr;
17488 struct cfg80211_beacon_registration *reg;
17489
17490 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17491
17492 spin_lock_bh(&rdev->beacon_registrations_lock);
17493 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17494 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17495 if (!msg) {
17496 spin_unlock_bh(&rdev->beacon_registrations_lock);
17497 return;
17498 }
17499
17500 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17501 if (!hdr)
17502 goto nla_put_failure;
17503
17504 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17505 (freq &&
17506 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17507 KHZ_TO_MHZ(freq)) ||
17508 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17509 freq % 1000))) ||
17510 (sig_dbm &&
17511 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17512 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17513 goto nla_put_failure;
17514
17515 genlmsg_end(msg, hdr);
17516
17517 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17518 }
17519 spin_unlock_bh(&rdev->beacon_registrations_lock);
17520 return;
17521
17522 nla_put_failure:
17523 spin_unlock_bh(&rdev->beacon_registrations_lock);
17524 nlmsg_free(msg);
17525 }
17526 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17527
17528 #ifdef CONFIG_PM
17529 static int cfg80211_net_detect_results(struct sk_buff *msg,
17530 struct cfg80211_wowlan_wakeup *wakeup)
17531 {
17532 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17533 struct nlattr *nl_results, *nl_match, *nl_freqs;
17534 int i, j;
17535
17536 nl_results = nla_nest_start_noflag(msg,
17537 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17538 if (!nl_results)
17539 return -EMSGSIZE;
17540
17541 for (i = 0; i < nd->n_matches; i++) {
17542 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17543
17544 nl_match = nla_nest_start_noflag(msg, i);
17545 if (!nl_match)
17546 break;
17547
17548 /* The SSID attribute is optional in nl80211, but for
17549 * simplicity reasons it's always present in the
17550 * cfg80211 structure. If a driver can't pass the
17551 * SSID, that needs to be changed. A zero length SSID
17552 * is still a valid SSID (wildcard), so it cannot be
17553 * used for this purpose.
17554 */
17555 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17556 match->ssid.ssid)) {
17557 nla_nest_cancel(msg, nl_match);
17558 goto out;
17559 }
17560
17561 if (match->n_channels) {
17562 nl_freqs = nla_nest_start_noflag(msg,
17563 NL80211_ATTR_SCAN_FREQUENCIES);
17564 if (!nl_freqs) {
17565 nla_nest_cancel(msg, nl_match);
17566 goto out;
17567 }
17568
17569 for (j = 0; j < match->n_channels; j++) {
17570 if (nla_put_u32(msg, j, match->channels[j])) {
17571 nla_nest_cancel(msg, nl_freqs);
17572 nla_nest_cancel(msg, nl_match);
17573 goto out;
17574 }
17575 }
17576
17577 nla_nest_end(msg, nl_freqs);
17578 }
17579
17580 nla_nest_end(msg, nl_match);
17581 }
17582
17583 out:
17584 nla_nest_end(msg, nl_results);
17585 return 0;
17586 }
17587
17588 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17589 struct cfg80211_wowlan_wakeup *wakeup,
17590 gfp_t gfp)
17591 {
17592 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17593 struct sk_buff *msg;
17594 void *hdr;
17595 int size = 200;
17596
17597 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17598
17599 if (wakeup)
17600 size += wakeup->packet_present_len;
17601
17602 msg = nlmsg_new(size, gfp);
17603 if (!msg)
17604 return;
17605
17606 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17607 if (!hdr)
17608 goto free_msg;
17609
17610 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17611 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17612 NL80211_ATTR_PAD))
17613 goto free_msg;
17614
17615 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17616 wdev->netdev->ifindex))
17617 goto free_msg;
17618
17619 if (wakeup) {
17620 struct nlattr *reasons;
17621
17622 reasons = nla_nest_start_noflag(msg,
17623 NL80211_ATTR_WOWLAN_TRIGGERS);
17624 if (!reasons)
17625 goto free_msg;
17626
17627 if (wakeup->disconnect &&
17628 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17629 goto free_msg;
17630 if (wakeup->magic_pkt &&
17631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17632 goto free_msg;
17633 if (wakeup->gtk_rekey_failure &&
17634 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17635 goto free_msg;
17636 if (wakeup->eap_identity_req &&
17637 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17638 goto free_msg;
17639 if (wakeup->four_way_handshake &&
17640 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17641 goto free_msg;
17642 if (wakeup->rfkill_release &&
17643 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17644 goto free_msg;
17645
17646 if (wakeup->pattern_idx >= 0 &&
17647 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17648 wakeup->pattern_idx))
17649 goto free_msg;
17650
17651 if (wakeup->tcp_match &&
17652 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17653 goto free_msg;
17654
17655 if (wakeup->tcp_connlost &&
17656 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17657 goto free_msg;
17658
17659 if (wakeup->tcp_nomoretokens &&
17660 nla_put_flag(msg,
17661 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17662 goto free_msg;
17663
17664 if (wakeup->packet) {
17665 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17666 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17667
17668 if (!wakeup->packet_80211) {
17669 pkt_attr =
17670 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17671 len_attr =
17672 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17673 }
17674
17675 if (wakeup->packet_len &&
17676 nla_put_u32(msg, len_attr, wakeup->packet_len))
17677 goto free_msg;
17678
17679 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17680 wakeup->packet))
17681 goto free_msg;
17682 }
17683
17684 if (wakeup->net_detect &&
17685 cfg80211_net_detect_results(msg, wakeup))
17686 goto free_msg;
17687
17688 nla_nest_end(msg, reasons);
17689 }
17690
17691 genlmsg_end(msg, hdr);
17692
17693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17694 NL80211_MCGRP_MLME, gfp);
17695 return;
17696
17697 free_msg:
17698 nlmsg_free(msg);
17699 }
17700 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17701 #endif
17702
17703 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17704 enum nl80211_tdls_operation oper,
17705 u16 reason_code, gfp_t gfp)
17706 {
17707 struct wireless_dev *wdev = dev->ieee80211_ptr;
17708 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17709 struct sk_buff *msg;
17710 void *hdr;
17711
17712 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17713 reason_code);
17714
17715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17716 if (!msg)
17717 return;
17718
17719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17720 if (!hdr) {
17721 nlmsg_free(msg);
17722 return;
17723 }
17724
17725 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17726 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17727 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17728 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17729 (reason_code > 0 &&
17730 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17731 goto nla_put_failure;
17732
17733 genlmsg_end(msg, hdr);
17734
17735 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17736 NL80211_MCGRP_MLME, gfp);
17737 return;
17738
17739 nla_put_failure:
17740 nlmsg_free(msg);
17741 }
17742 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17743
17744 static int nl80211_netlink_notify(struct notifier_block * nb,
17745 unsigned long state,
17746 void *_notify)
17747 {
17748 struct netlink_notify *notify = _notify;
17749 struct cfg80211_registered_device *rdev;
17750 struct wireless_dev *wdev;
17751 struct cfg80211_beacon_registration *reg, *tmp;
17752
17753 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17754 return NOTIFY_DONE;
17755
17756 rcu_read_lock();
17757
17758 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17759 struct cfg80211_sched_scan_request *sched_scan_req;
17760
17761 list_for_each_entry_rcu(sched_scan_req,
17762 &rdev->sched_scan_req_list,
17763 list) {
17764 if (sched_scan_req->owner_nlportid == notify->portid) {
17765 sched_scan_req->nl_owner_dead = true;
17766 schedule_work(&rdev->sched_scan_stop_wk);
17767 }
17768 }
17769
17770 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17771 cfg80211_mlme_unregister_socket(wdev, notify->portid);
17772
17773 if (wdev->owner_nlportid == notify->portid) {
17774 wdev->nl_owner_dead = true;
17775 schedule_work(&rdev->destroy_work);
17776 } else if (wdev->conn_owner_nlportid == notify->portid) {
17777 schedule_work(&wdev->disconnect_wk);
17778 }
17779
17780 cfg80211_release_pmsr(wdev, notify->portid);
17781 }
17782
17783 spin_lock_bh(&rdev->beacon_registrations_lock);
17784 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17785 list) {
17786 if (reg->nlportid == notify->portid) {
17787 list_del(&reg->list);
17788 kfree(reg);
17789 break;
17790 }
17791 }
17792 spin_unlock_bh(&rdev->beacon_registrations_lock);
17793 }
17794
17795 rcu_read_unlock();
17796
17797 /*
17798 * It is possible that the user space process that is controlling the
17799 * indoor setting disappeared, so notify the regulatory core.
17800 */
17801 regulatory_netlink_notify(notify->portid);
17802 return NOTIFY_OK;
17803 }
17804
17805 static struct notifier_block nl80211_netlink_notifier = {
17806 .notifier_call = nl80211_netlink_notify,
17807 };
17808
17809 void cfg80211_ft_event(struct net_device *netdev,
17810 struct cfg80211_ft_event_params *ft_event)
17811 {
17812 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17813 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17814 struct sk_buff *msg;
17815 void *hdr;
17816
17817 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17818
17819 if (!ft_event->target_ap)
17820 return;
17821
17822 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17823 GFP_KERNEL);
17824 if (!msg)
17825 return;
17826
17827 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17828 if (!hdr)
17829 goto out;
17830
17831 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17832 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17833 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17834 goto out;
17835
17836 if (ft_event->ies &&
17837 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17838 goto out;
17839 if (ft_event->ric_ies &&
17840 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17841 ft_event->ric_ies))
17842 goto out;
17843
17844 genlmsg_end(msg, hdr);
17845
17846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17847 NL80211_MCGRP_MLME, GFP_KERNEL);
17848 return;
17849 out:
17850 nlmsg_free(msg);
17851 }
17852 EXPORT_SYMBOL(cfg80211_ft_event);
17853
17854 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17855 {
17856 struct cfg80211_registered_device *rdev;
17857 struct sk_buff *msg;
17858 void *hdr;
17859 u32 nlportid;
17860
17861 rdev = wiphy_to_rdev(wdev->wiphy);
17862 if (!rdev->crit_proto_nlportid)
17863 return;
17864
17865 nlportid = rdev->crit_proto_nlportid;
17866 rdev->crit_proto_nlportid = 0;
17867
17868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17869 if (!msg)
17870 return;
17871
17872 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17873 if (!hdr)
17874 goto nla_put_failure;
17875
17876 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17877 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17878 NL80211_ATTR_PAD))
17879 goto nla_put_failure;
17880
17881 genlmsg_end(msg, hdr);
17882
17883 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17884 return;
17885
17886 nla_put_failure:
17887 nlmsg_free(msg);
17888 }
17889 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17890
17891 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17892 {
17893 struct wiphy *wiphy = wdev->wiphy;
17894 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17895 struct sk_buff *msg;
17896 void *hdr;
17897
17898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17899 if (!msg)
17900 return;
17901
17902 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17903 if (!hdr)
17904 goto out;
17905
17906 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17907 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17908 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17909 NL80211_ATTR_PAD))
17910 goto out;
17911
17912 genlmsg_end(msg, hdr);
17913
17914 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17915 NL80211_MCGRP_MLME, GFP_KERNEL);
17916 return;
17917 out:
17918 nlmsg_free(msg);
17919 }
17920
17921 int cfg80211_external_auth_request(struct net_device *dev,
17922 struct cfg80211_external_auth_params *params,
17923 gfp_t gfp)
17924 {
17925 struct wireless_dev *wdev = dev->ieee80211_ptr;
17926 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17927 struct sk_buff *msg;
17928 void *hdr;
17929
17930 if (!wdev->conn_owner_nlportid)
17931 return -EINVAL;
17932
17933 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17934 if (!msg)
17935 return -ENOMEM;
17936
17937 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17938 if (!hdr)
17939 goto nla_put_failure;
17940
17941 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17942 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17943 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17944 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17945 params->action) ||
17946 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17947 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17948 params->ssid.ssid))
17949 goto nla_put_failure;
17950
17951 genlmsg_end(msg, hdr);
17952 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17953 wdev->conn_owner_nlportid);
17954 return 0;
17955
17956 nla_put_failure:
17957 nlmsg_free(msg);
17958 return -ENOBUFS;
17959 }
17960 EXPORT_SYMBOL(cfg80211_external_auth_request);
17961
17962 void cfg80211_update_owe_info_event(struct net_device *netdev,
17963 struct cfg80211_update_owe_info *owe_info,
17964 gfp_t gfp)
17965 {
17966 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17967 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17968 struct sk_buff *msg;
17969 void *hdr;
17970
17971 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17972
17973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17974 if (!msg)
17975 return;
17976
17977 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17978 if (!hdr)
17979 goto nla_put_failure;
17980
17981 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17982 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17983 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17984 goto nla_put_failure;
17985
17986 if (!owe_info->ie_len ||
17987 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17988 goto nla_put_failure;
17989
17990 genlmsg_end(msg, hdr);
17991
17992 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17993 NL80211_MCGRP_MLME, gfp);
17994 return;
17995
17996 nla_put_failure:
17997 genlmsg_cancel(msg, hdr);
17998 nlmsg_free(msg);
17999 }
18000 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18001
18002 /* initialisation/exit functions */
18003
18004 int __init nl80211_init(void)
18005 {
18006 int err;
18007
18008 err = genl_register_family(&nl80211_fam);
18009 if (err)
18010 return err;
18011
18012 err = netlink_register_notifier(&nl80211_netlink_notifier);
18013 if (err)
18014 goto err_out;
18015
18016 return 0;
18017 err_out:
18018 genl_unregister_family(&nl80211_fam);
18019 return err;
18020 }
18021
18022 void nl80211_exit(void)
18023 {
18024 netlink_unregister_notifier(&nl80211_netlink_notifier);
18025 genl_unregister_family(&nl80211_fam);
18026 }
Linux with added FPC-III support