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Linux 4.18.10
[linux/fpc-iii.git] / net / wireless / nl80211.c
blob80bc986c79e5aea8d50121be481833738a1d50b7
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 Intel Corporation
8 */
9
10 #include <linux/if.h>
11 #include <linux/module.h>
12 #include <linux/err.h>
13 #include <linux/slab.h>
14 #include <linux/list.h>
15 #include <linux/if_ether.h>
16 #include <linux/ieee80211.h>
17 #include <linux/nl80211.h>
18 #include <linux/rtnetlink.h>
19 #include <linux/netlink.h>
20 #include <linux/nospec.h>
21 #include <linux/etherdevice.h>
22 #include <net/net_namespace.h>
23 #include <net/genetlink.h>
24 #include <net/cfg80211.h>
25 #include <net/sock.h>
26 #include <net/inet_connection_sock.h>
27 #include "core.h"
28 #include "nl80211.h"
29 #include "reg.h"
30 #include "rdev-ops.h"
31
32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
33 struct genl_info *info,
34 struct cfg80211_crypto_settings *settings,
35 int cipher_limit);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam;
39
40 /* multicast groups */
41 enum nl80211_multicast_groups {
42 NL80211_MCGRP_CONFIG,
43 NL80211_MCGRP_SCAN,
44 NL80211_MCGRP_REGULATORY,
45 NL80211_MCGRP_MLME,
46 NL80211_MCGRP_VENDOR,
47 NL80211_MCGRP_NAN,
48 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
49 };
50
51 static const struct genl_multicast_group nl80211_mcgrps[] = {
52 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
53 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
54 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
55 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
56 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
57 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
58 #ifdef CONFIG_NL80211_TESTMODE
59 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
60 #endif
61 };
62
63 /* returns ERR_PTR values */
64 static struct wireless_dev *
65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
66 {
67 struct cfg80211_registered_device *rdev;
68 struct wireless_dev *result = NULL;
69 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
70 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
71 u64 wdev_id;
72 int wiphy_idx = -1;
73 int ifidx = -1;
74
75 ASSERT_RTNL();
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
88 struct wireless_dev *wdev;
89
90 if (wiphy_net(&rdev->wiphy) != netns)
91 continue;
92
93 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
94 continue;
95
96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
97 if (have_ifidx && wdev->netdev &&
98 wdev->netdev->ifindex == ifidx) {
99 result = wdev;
100 break;
101 }
102 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
103 result = wdev;
104 break;
105 }
106 }
107
108 if (result)
109 break;
110 }
111
112 if (result)
113 return result;
114 return ERR_PTR(-ENODEV);
115 }
116
117 static struct cfg80211_registered_device *
118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
119 {
120 struct cfg80211_registered_device *rdev = NULL, *tmp;
121 struct net_device *netdev;
122
123 ASSERT_RTNL();
124
125 if (!attrs[NL80211_ATTR_WIPHY] &&
126 !attrs[NL80211_ATTR_IFINDEX] &&
127 !attrs[NL80211_ATTR_WDEV])
128 return ERR_PTR(-EINVAL);
129
130 if (attrs[NL80211_ATTR_WIPHY])
131 rdev = cfg80211_rdev_by_wiphy_idx(
132 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
133
134 if (attrs[NL80211_ATTR_WDEV]) {
135 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
136 struct wireless_dev *wdev;
137 bool found = false;
138
139 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
140 if (tmp) {
141 /* make sure wdev exists */
142 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
143 if (wdev->identifier != (u32)wdev_id)
144 continue;
145 found = true;
146 break;
147 }
148
149 if (!found)
150 tmp = NULL;
151
152 if (rdev && tmp != rdev)
153 return ERR_PTR(-EINVAL);
154 rdev = tmp;
155 }
156 }
157
158 if (attrs[NL80211_ATTR_IFINDEX]) {
159 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
160
161 netdev = __dev_get_by_index(netns, ifindex);
162 if (netdev) {
163 if (netdev->ieee80211_ptr)
164 tmp = wiphy_to_rdev(
165 netdev->ieee80211_ptr->wiphy);
166 else
167 tmp = NULL;
168
169 /* not wireless device -- return error */
170 if (!tmp)
171 return ERR_PTR(-EINVAL);
172
173 /* mismatch -- return error */
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176
177 rdev = tmp;
178 }
179 }
180
181 if (!rdev)
182 return ERR_PTR(-ENODEV);
183
184 if (netns != wiphy_net(&rdev->wiphy))
185 return ERR_PTR(-ENODEV);
186
187 return rdev;
188 }
189
190 /*
191 * This function returns a pointer to the driver
192 * that the genl_info item that is passed refers to.
193 *
194 * The result of this can be a PTR_ERR and hence must
195 * be checked with IS_ERR() for errors.
196 */
197 static struct cfg80211_registered_device *
198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
199 {
200 return __cfg80211_rdev_from_attrs(netns, info->attrs);
201 }
202
203 /* policy for the attributes */
204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
205 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
206 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
207 .len = 20-1 },
208 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
209
210 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
211 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
212 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
213 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
214 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
215
216 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
217 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
218 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
220 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
221 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
222
223 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
224 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
225 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
226
227 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
228 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
229
230 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
231 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
232 .len = WLAN_MAX_KEY_LEN },
233 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
234 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
235 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
236 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
237 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
238
239 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
240 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
241 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
242 .len = IEEE80211_MAX_DATA_LEN },
243 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
244 .len = IEEE80211_MAX_DATA_LEN },
245 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
246 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
247 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
248 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
249 .len = NL80211_MAX_SUPP_RATES },
250 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
251 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
252 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
253 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_MESH_ID_LEN },
255 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
256
257 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
258 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
259
260 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
262 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
263 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
264 .len = NL80211_MAX_SUPP_RATES },
265 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
266
267 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
268 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
269
270 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
271
272 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
273 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
274 .len = IEEE80211_MAX_DATA_LEN },
275 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
277
278 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
279 .len = IEEE80211_MAX_SSID_LEN },
280 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
281 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
282 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
283 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
284 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
285 [NL80211_ATTR_STA_FLAGS2] = {
286 .len = sizeof(struct nl80211_sta_flag_update),
287 },
288 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
289 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
290 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
291 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
292 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
293 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
294 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
295 [NL80211_ATTR_PID] = { .type = NLA_U32 },
296 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
297 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
298 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
299 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
300 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
301 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
302 .len = IEEE80211_MAX_DATA_LEN },
303 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
304 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
305 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
306 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
307 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
308 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
309 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
310 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
311 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
312 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
313 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
314 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
315 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
316 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
317 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
318 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
319 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
320 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
321 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
322 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
325 .len = IEEE80211_MAX_DATA_LEN },
326 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
327 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
328 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
329 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
331 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
332 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
334 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
335 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
336 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
337 .len = IEEE80211_MAX_DATA_LEN },
338 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
339 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
340 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
341 .len = NL80211_HT_CAPABILITY_LEN
342 },
343 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
344 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
345 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
346 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
347 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
348 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
349 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
350 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
351 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
352 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
353 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
354 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
355 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
356 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
357 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
359 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
360 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
361 .len = NL80211_VHT_CAPABILITY_LEN,
362 },
363 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
364 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
365 .len = IEEE80211_MAX_DATA_LEN },
366 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
367 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
368 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
369 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
370 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
371 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
372 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
373 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
374 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
375 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
376 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
377 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
378 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
379 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
380 .len = IEEE80211_QOS_MAP_LEN_MAX },
381 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
382 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
383 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
384 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
385 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
386 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
387 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
388 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
389 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
390 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
391 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
392 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
393 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
394 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
395 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
396 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
397 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
398 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
399 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
400 .len = VHT_MUMIMO_GROUPS_DATA_LEN
401 },
402 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
403 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
404 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
405 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
406 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
407 .len = FILS_MAX_KEK_LEN },
408 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
409 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
410 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
411 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
412 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
413 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
414 },
415 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
416 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
417 .len = FILS_ERP_MAX_USERNAME_LEN },
418 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
419 .len = FILS_ERP_MAX_REALM_LEN },
420 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
421 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
422 .len = FILS_ERP_MAX_RRK_LEN },
423 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
424 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
425 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
426 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
427
428 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
429 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
430 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
431 };
432
433 /* policy for the key attributes */
434 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
435 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
436 [NL80211_KEY_IDX] = { .type = NLA_U8 },
437 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
438 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
439 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
440 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
441 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
442 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
443 };
444
445 /* policy for the key default flags */
446 static const struct nla_policy
447 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
448 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
449 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
450 };
451
452 #ifdef CONFIG_PM
453 /* policy for WoWLAN attributes */
454 static const struct nla_policy
455 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
456 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
457 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
458 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
459 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
460 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
461 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
462 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
463 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
464 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
465 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
466 };
467
468 static const struct nla_policy
469 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
470 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
471 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
472 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
473 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
474 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
475 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
476 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
477 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
478 },
479 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
480 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
481 },
482 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
483 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
484 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
485 };
486 #endif /* CONFIG_PM */
487
488 /* policy for coalesce rule attributes */
489 static const struct nla_policy
490 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
491 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
492 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
493 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
494 };
495
496 /* policy for GTK rekey offload attributes */
497 static const struct nla_policy
498 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
499 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
500 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
501 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
502 };
503
504 static const struct nla_policy
505 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
506 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
507 .len = IEEE80211_MAX_SSID_LEN },
508 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
509 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
510 };
511
512 static const struct nla_policy
513 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
514 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
515 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
516 };
517
518 static const struct nla_policy
519 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
520 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
521 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
522 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
523 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
524 },
525 };
526
527 /* policy for NAN function attributes */
528 static const struct nla_policy
529 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
530 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
531 [NL80211_NAN_FUNC_SERVICE_ID] = {
532 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
533 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
534 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
535 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
536 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
537 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
538 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
539 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
540 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
541 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
542 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
543 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
544 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
545 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
546 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
547 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
548 };
549
550 /* policy for Service Response Filter attributes */
551 static const struct nla_policy
552 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
553 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
554 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
555 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
556 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
557 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
558 };
559
560 /* policy for packet pattern attributes */
561 static const struct nla_policy
562 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
563 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
564 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
565 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
566 };
567
568 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
569 struct netlink_callback *cb,
570 struct cfg80211_registered_device **rdev,
571 struct wireless_dev **wdev)
572 {
573 int err;
574
575 if (!cb->args[0]) {
576 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
577 genl_family_attrbuf(&nl80211_fam),
578 nl80211_fam.maxattr, nl80211_policy, NULL);
579 if (err)
580 return err;
581
582 *wdev = __cfg80211_wdev_from_attrs(
583 sock_net(skb->sk),
584 genl_family_attrbuf(&nl80211_fam));
585 if (IS_ERR(*wdev))
586 return PTR_ERR(*wdev);
587 *rdev = wiphy_to_rdev((*wdev)->wiphy);
588 /* 0 is the first index - add 1 to parse only once */
589 cb->args[0] = (*rdev)->wiphy_idx + 1;
590 cb->args[1] = (*wdev)->identifier;
591 } else {
592 /* subtract the 1 again here */
593 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
594 struct wireless_dev *tmp;
595
596 if (!wiphy)
597 return -ENODEV;
598 *rdev = wiphy_to_rdev(wiphy);
599 *wdev = NULL;
600
601 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
602 if (tmp->identifier == cb->args[1]) {
603 *wdev = tmp;
604 break;
605 }
606 }
607
608 if (!*wdev)
609 return -ENODEV;
610 }
611
612 return 0;
613 }
614
615 /* IE validation */
616 static bool is_valid_ie_attr(const struct nlattr *attr)
617 {
618 const u8 *pos;
619 int len;
620
621 if (!attr)
622 return true;
623
624 pos = nla_data(attr);
625 len = nla_len(attr);
626
627 while (len) {
628 u8 elemlen;
629
630 if (len < 2)
631 return false;
632 len -= 2;
633
634 elemlen = pos[1];
635 if (elemlen > len)
636 return false;
637
638 len -= elemlen;
639 pos += 2 + elemlen;
640 }
641
642 return true;
643 }
644
645 /* message building helper */
646 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
647 int flags, u8 cmd)
648 {
649 /* since there is no private header just add the generic one */
650 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
651 }
652
653 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
654 const struct ieee80211_reg_rule *rule)
655 {
656 int j;
657 struct nlattr *nl_wmm_rules =
658 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
659
660 if (!nl_wmm_rules)
661 goto nla_put_failure;
662
663 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
664 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
665
666 if (!nl_wmm_rule)
667 goto nla_put_failure;
668
669 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
670 rule->wmm_rule->client[j].cw_min) ||
671 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
672 rule->wmm_rule->client[j].cw_max) ||
673 nla_put_u8(msg, NL80211_WMMR_AIFSN,
674 rule->wmm_rule->client[j].aifsn) ||
675 nla_put_u8(msg, NL80211_WMMR_TXOP,
676 rule->wmm_rule->client[j].cot))
677 goto nla_put_failure;
678
679 nla_nest_end(msg, nl_wmm_rule);
680 }
681 nla_nest_end(msg, nl_wmm_rules);
682
683 return 0;
684
685 nla_put_failure:
686 return -ENOBUFS;
687 }
688
689 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
690 struct ieee80211_channel *chan,
691 bool large)
692 {
693 /* Some channels must be completely excluded from the
694 * list to protect old user-space tools from breaking
695 */
696 if (!large && chan->flags &
697 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
698 return 0;
699
700 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
701 chan->center_freq))
702 goto nla_put_failure;
703
704 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
706 goto nla_put_failure;
707 if (chan->flags & IEEE80211_CHAN_NO_IR) {
708 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
709 goto nla_put_failure;
710 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
711 goto nla_put_failure;
712 }
713 if (chan->flags & IEEE80211_CHAN_RADAR) {
714 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
715 goto nla_put_failure;
716 if (large) {
717 u32 time;
718
719 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
720
721 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
722 chan->dfs_state))
723 goto nla_put_failure;
724 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
725 time))
726 goto nla_put_failure;
727 if (nla_put_u32(msg,
728 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
729 chan->dfs_cac_ms))
730 goto nla_put_failure;
731 }
732 }
733
734 if (large) {
735 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
736 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
737 goto nla_put_failure;
738 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
739 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
740 goto nla_put_failure;
741 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
742 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
743 goto nla_put_failure;
744 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
745 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
746 goto nla_put_failure;
747 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
748 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
749 goto nla_put_failure;
750 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
751 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
752 goto nla_put_failure;
753 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
754 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
755 goto nla_put_failure;
756 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
757 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
758 goto nla_put_failure;
759 }
760
761 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
762 DBM_TO_MBM(chan->max_power)))
763 goto nla_put_failure;
764
765 if (large) {
766 const struct ieee80211_reg_rule *rule =
767 freq_reg_info(wiphy, chan->center_freq);
768
769 if (!IS_ERR(rule) && rule->wmm_rule) {
770 if (nl80211_msg_put_wmm_rules(msg, rule))
771 goto nla_put_failure;
772 }
773 }
774
775 return 0;
776
777 nla_put_failure:
778 return -ENOBUFS;
779 }
780
781 static bool nl80211_put_txq_stats(struct sk_buff *msg,
782 struct cfg80211_txq_stats *txqstats,
783 int attrtype)
784 {
785 struct nlattr *txqattr;
786
787 #define PUT_TXQVAL_U32(attr, memb) do { \
788 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
789 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
790 return false; \
791 } while (0)
792
793 txqattr = nla_nest_start(msg, attrtype);
794 if (!txqattr)
795 return false;
796
797 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
798 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
799 PUT_TXQVAL_U32(FLOWS, flows);
800 PUT_TXQVAL_U32(DROPS, drops);
801 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
802 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
803 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
804 PUT_TXQVAL_U32(COLLISIONS, collisions);
805 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
806 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
807 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
808 nla_nest_end(msg, txqattr);
809
810 #undef PUT_TXQVAL_U32
811 return true;
812 }
813
814 /* netlink command implementations */
815
816 struct key_parse {
817 struct key_params p;
818 int idx;
819 int type;
820 bool def, defmgmt;
821 bool def_uni, def_multi;
822 };
823
824 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
825 struct key_parse *k)
826 {
827 struct nlattr *tb[NL80211_KEY_MAX + 1];
828 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
829 nl80211_key_policy, info->extack);
830 if (err)
831 return err;
832
833 k->def = !!tb[NL80211_KEY_DEFAULT];
834 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
835
836 if (k->def) {
837 k->def_uni = true;
838 k->def_multi = true;
839 }
840 if (k->defmgmt)
841 k->def_multi = true;
842
843 if (tb[NL80211_KEY_IDX])
844 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
845
846 if (tb[NL80211_KEY_DATA]) {
847 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
848 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
849 }
850
851 if (tb[NL80211_KEY_SEQ]) {
852 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
853 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
854 }
855
856 if (tb[NL80211_KEY_CIPHER])
857 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
858
859 if (tb[NL80211_KEY_TYPE]) {
860 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
861 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
862 return genl_err_attr(info, -EINVAL,
863 tb[NL80211_KEY_TYPE]);
864 }
865
866 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
867 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
868
869 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
870 tb[NL80211_KEY_DEFAULT_TYPES],
871 nl80211_key_default_policy,
872 info->extack);
873 if (err)
874 return err;
875
876 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
877 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
878 }
879
880 return 0;
881 }
882
883 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
884 {
885 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
886 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
887 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
888 }
889
890 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
891 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
892 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
893 }
894
895 if (info->attrs[NL80211_ATTR_KEY_IDX])
896 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
897
898 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
899 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
900
901 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
902 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
903
904 if (k->def) {
905 k->def_uni = true;
906 k->def_multi = true;
907 }
908 if (k->defmgmt)
909 k->def_multi = true;
910
911 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
912 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
913 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
914 GENL_SET_ERR_MSG(info, "key type out of range");
915 return -EINVAL;
916 }
917 }
918
919 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
920 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
921 int err = nla_parse_nested(kdt,
922 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
923 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
924 nl80211_key_default_policy,
925 info->extack);
926 if (err)
927 return err;
928
929 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
930 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
931 }
932
933 return 0;
934 }
935
936 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
937 {
938 int err;
939
940 memset(k, 0, sizeof(*k));
941 k->idx = -1;
942 k->type = -1;
943
944 if (info->attrs[NL80211_ATTR_KEY])
945 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
946 else
947 err = nl80211_parse_key_old(info, k);
948
949 if (err)
950 return err;
951
952 if (k->def && k->defmgmt) {
953 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
954 return -EINVAL;
955 }
956
957 if (k->defmgmt) {
958 if (k->def_uni || !k->def_multi) {
959 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
960 return -EINVAL;
961 }
962 }
963
964 if (k->idx != -1) {
965 if (k->defmgmt) {
966 if (k->idx < 4 || k->idx > 5) {
967 GENL_SET_ERR_MSG(info,
968 "defmgmt key idx not 4 or 5");
969 return -EINVAL;
970 }
971 } else if (k->def) {
972 if (k->idx < 0 || k->idx > 3) {
973 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
974 return -EINVAL;
975 }
976 } else {
977 if (k->idx < 0 || k->idx > 5) {
978 GENL_SET_ERR_MSG(info, "key idx not 0-5");
979 return -EINVAL;
980 }
981 }
982 }
983
984 return 0;
985 }
986
987 static struct cfg80211_cached_keys *
988 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
989 struct genl_info *info, bool *no_ht)
990 {
991 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
992 struct key_parse parse;
993 struct nlattr *key;
994 struct cfg80211_cached_keys *result;
995 int rem, err, def = 0;
996 bool have_key = false;
997
998 nla_for_each_nested(key, keys, rem) {
999 have_key = true;
1000 break;
1001 }
1002
1003 if (!have_key)
1004 return NULL;
1005
1006 result = kzalloc(sizeof(*result), GFP_KERNEL);
1007 if (!result)
1008 return ERR_PTR(-ENOMEM);
1009
1010 result->def = -1;
1011
1012 nla_for_each_nested(key, keys, rem) {
1013 memset(&parse, 0, sizeof(parse));
1014 parse.idx = -1;
1015
1016 err = nl80211_parse_key_new(info, key, &parse);
1017 if (err)
1018 goto error;
1019 err = -EINVAL;
1020 if (!parse.p.key)
1021 goto error;
1022 if (parse.idx < 0 || parse.idx > 3) {
1023 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1024 goto error;
1025 }
1026 if (parse.def) {
1027 if (def) {
1028 GENL_SET_ERR_MSG(info,
1029 "only one key can be default");
1030 goto error;
1031 }
1032 def = 1;
1033 result->def = parse.idx;
1034 if (!parse.def_uni || !parse.def_multi)
1035 goto error;
1036 } else if (parse.defmgmt)
1037 goto error;
1038 err = cfg80211_validate_key_settings(rdev, &parse.p,
1039 parse.idx, false, NULL);
1040 if (err)
1041 goto error;
1042 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1043 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1044 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1045 err = -EINVAL;
1046 goto error;
1047 }
1048 result->params[parse.idx].cipher = parse.p.cipher;
1049 result->params[parse.idx].key_len = parse.p.key_len;
1050 result->params[parse.idx].key = result->data[parse.idx];
1051 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1052
1053 /* must be WEP key if we got here */
1054 if (no_ht)
1055 *no_ht = true;
1056 }
1057
1058 if (result->def < 0) {
1059 err = -EINVAL;
1060 GENL_SET_ERR_MSG(info, "need a default/TX key");
1061 goto error;
1062 }
1063
1064 return result;
1065 error:
1066 kfree(result);
1067 return ERR_PTR(err);
1068 }
1069
1070 static int nl80211_key_allowed(struct wireless_dev *wdev)
1071 {
1072 ASSERT_WDEV_LOCK(wdev);
1073
1074 switch (wdev->iftype) {
1075 case NL80211_IFTYPE_AP:
1076 case NL80211_IFTYPE_AP_VLAN:
1077 case NL80211_IFTYPE_P2P_GO:
1078 case NL80211_IFTYPE_MESH_POINT:
1079 break;
1080 case NL80211_IFTYPE_ADHOC:
1081 case NL80211_IFTYPE_STATION:
1082 case NL80211_IFTYPE_P2P_CLIENT:
1083 if (!wdev->current_bss)
1084 return -ENOLINK;
1085 break;
1086 case NL80211_IFTYPE_UNSPECIFIED:
1087 case NL80211_IFTYPE_OCB:
1088 case NL80211_IFTYPE_MONITOR:
1089 case NL80211_IFTYPE_NAN:
1090 case NL80211_IFTYPE_P2P_DEVICE:
1091 case NL80211_IFTYPE_WDS:
1092 case NUM_NL80211_IFTYPES:
1093 return -EINVAL;
1094 }
1095
1096 return 0;
1097 }
1098
1099 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1100 struct nlattr *tb)
1101 {
1102 struct ieee80211_channel *chan;
1103
1104 if (tb == NULL)
1105 return NULL;
1106 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1107 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1108 return NULL;
1109 return chan;
1110 }
1111
1112 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1113 {
1114 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1115 int i;
1116
1117 if (!nl_modes)
1118 goto nla_put_failure;
1119
1120 i = 0;
1121 while (ifmodes) {
1122 if ((ifmodes & 1) && nla_put_flag(msg, i))
1123 goto nla_put_failure;
1124 ifmodes >>= 1;
1125 i++;
1126 }
1127
1128 nla_nest_end(msg, nl_modes);
1129 return 0;
1130
1131 nla_put_failure:
1132 return -ENOBUFS;
1133 }
1134
1135 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1136 struct sk_buff *msg,
1137 bool large)
1138 {
1139 struct nlattr *nl_combis;
1140 int i, j;
1141
1142 nl_combis = nla_nest_start(msg,
1143 NL80211_ATTR_INTERFACE_COMBINATIONS);
1144 if (!nl_combis)
1145 goto nla_put_failure;
1146
1147 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1148 const struct ieee80211_iface_combination *c;
1149 struct nlattr *nl_combi, *nl_limits;
1150
1151 c = &wiphy->iface_combinations[i];
1152
1153 nl_combi = nla_nest_start(msg, i + 1);
1154 if (!nl_combi)
1155 goto nla_put_failure;
1156
1157 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1158 if (!nl_limits)
1159 goto nla_put_failure;
1160
1161 for (j = 0; j < c->n_limits; j++) {
1162 struct nlattr *nl_limit;
1163
1164 nl_limit = nla_nest_start(msg, j + 1);
1165 if (!nl_limit)
1166 goto nla_put_failure;
1167 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1168 c->limits[j].max))
1169 goto nla_put_failure;
1170 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1171 c->limits[j].types))
1172 goto nla_put_failure;
1173 nla_nest_end(msg, nl_limit);
1174 }
1175
1176 nla_nest_end(msg, nl_limits);
1177
1178 if (c->beacon_int_infra_match &&
1179 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1180 goto nla_put_failure;
1181 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1182 c->num_different_channels) ||
1183 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1184 c->max_interfaces))
1185 goto nla_put_failure;
1186 if (large &&
1187 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1188 c->radar_detect_widths) ||
1189 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1190 c->radar_detect_regions)))
1191 goto nla_put_failure;
1192 if (c->beacon_int_min_gcd &&
1193 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1194 c->beacon_int_min_gcd))
1195 goto nla_put_failure;
1196
1197 nla_nest_end(msg, nl_combi);
1198 }
1199
1200 nla_nest_end(msg, nl_combis);
1201
1202 return 0;
1203 nla_put_failure:
1204 return -ENOBUFS;
1205 }
1206
1207 #ifdef CONFIG_PM
1208 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1209 struct sk_buff *msg)
1210 {
1211 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1212 struct nlattr *nl_tcp;
1213
1214 if (!tcp)
1215 return 0;
1216
1217 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1218 if (!nl_tcp)
1219 return -ENOBUFS;
1220
1221 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1222 tcp->data_payload_max))
1223 return -ENOBUFS;
1224
1225 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1226 tcp->data_payload_max))
1227 return -ENOBUFS;
1228
1229 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1230 return -ENOBUFS;
1231
1232 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1233 sizeof(*tcp->tok), tcp->tok))
1234 return -ENOBUFS;
1235
1236 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1237 tcp->data_interval_max))
1238 return -ENOBUFS;
1239
1240 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1241 tcp->wake_payload_max))
1242 return -ENOBUFS;
1243
1244 nla_nest_end(msg, nl_tcp);
1245 return 0;
1246 }
1247
1248 static int nl80211_send_wowlan(struct sk_buff *msg,
1249 struct cfg80211_registered_device *rdev,
1250 bool large)
1251 {
1252 struct nlattr *nl_wowlan;
1253
1254 if (!rdev->wiphy.wowlan)
1255 return 0;
1256
1257 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1258 if (!nl_wowlan)
1259 return -ENOBUFS;
1260
1261 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1262 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1263 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1264 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1265 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1266 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1267 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1268 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1269 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1270 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1271 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1272 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1273 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1274 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1275 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1276 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1277 return -ENOBUFS;
1278
1279 if (rdev->wiphy.wowlan->n_patterns) {
1280 struct nl80211_pattern_support pat = {
1281 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1282 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1283 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1284 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1285 };
1286
1287 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1288 sizeof(pat), &pat))
1289 return -ENOBUFS;
1290 }
1291
1292 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1293 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1294 rdev->wiphy.wowlan->max_nd_match_sets))
1295 return -ENOBUFS;
1296
1297 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1298 return -ENOBUFS;
1299
1300 nla_nest_end(msg, nl_wowlan);
1301
1302 return 0;
1303 }
1304 #endif
1305
1306 static int nl80211_send_coalesce(struct sk_buff *msg,
1307 struct cfg80211_registered_device *rdev)
1308 {
1309 struct nl80211_coalesce_rule_support rule;
1310
1311 if (!rdev->wiphy.coalesce)
1312 return 0;
1313
1314 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1315 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1316 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1317 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1318 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1319 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1320
1321 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1322 return -ENOBUFS;
1323
1324 return 0;
1325 }
1326
1327 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1328 struct ieee80211_supported_band *sband)
1329 {
1330 struct nlattr *nl_rates, *nl_rate;
1331 struct ieee80211_rate *rate;
1332 int i;
1333
1334 /* add HT info */
1335 if (sband->ht_cap.ht_supported &&
1336 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1337 sizeof(sband->ht_cap.mcs),
1338 &sband->ht_cap.mcs) ||
1339 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1340 sband->ht_cap.cap) ||
1341 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1342 sband->ht_cap.ampdu_factor) ||
1343 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1344 sband->ht_cap.ampdu_density)))
1345 return -ENOBUFS;
1346
1347 /* add VHT info */
1348 if (sband->vht_cap.vht_supported &&
1349 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1350 sizeof(sband->vht_cap.vht_mcs),
1351 &sband->vht_cap.vht_mcs) ||
1352 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1353 sband->vht_cap.cap)))
1354 return -ENOBUFS;
1355
1356 /* add bitrates */
1357 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1358 if (!nl_rates)
1359 return -ENOBUFS;
1360
1361 for (i = 0; i < sband->n_bitrates; i++) {
1362 nl_rate = nla_nest_start(msg, i);
1363 if (!nl_rate)
1364 return -ENOBUFS;
1365
1366 rate = &sband->bitrates[i];
1367 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1368 rate->bitrate))
1369 return -ENOBUFS;
1370 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1371 nla_put_flag(msg,
1372 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1373 return -ENOBUFS;
1374
1375 nla_nest_end(msg, nl_rate);
1376 }
1377
1378 nla_nest_end(msg, nl_rates);
1379
1380 return 0;
1381 }
1382
1383 static int
1384 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1385 const struct ieee80211_txrx_stypes *mgmt_stypes)
1386 {
1387 u16 stypes;
1388 struct nlattr *nl_ftypes, *nl_ifs;
1389 enum nl80211_iftype ift;
1390 int i;
1391
1392 if (!mgmt_stypes)
1393 return 0;
1394
1395 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1396 if (!nl_ifs)
1397 return -ENOBUFS;
1398
1399 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1400 nl_ftypes = nla_nest_start(msg, ift);
1401 if (!nl_ftypes)
1402 return -ENOBUFS;
1403 i = 0;
1404 stypes = mgmt_stypes[ift].tx;
1405 while (stypes) {
1406 if ((stypes & 1) &&
1407 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1408 (i << 4) | IEEE80211_FTYPE_MGMT))
1409 return -ENOBUFS;
1410 stypes >>= 1;
1411 i++;
1412 }
1413 nla_nest_end(msg, nl_ftypes);
1414 }
1415
1416 nla_nest_end(msg, nl_ifs);
1417
1418 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1419 if (!nl_ifs)
1420 return -ENOBUFS;
1421
1422 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1423 nl_ftypes = nla_nest_start(msg, ift);
1424 if (!nl_ftypes)
1425 return -ENOBUFS;
1426 i = 0;
1427 stypes = mgmt_stypes[ift].rx;
1428 while (stypes) {
1429 if ((stypes & 1) &&
1430 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1431 (i << 4) | IEEE80211_FTYPE_MGMT))
1432 return -ENOBUFS;
1433 stypes >>= 1;
1434 i++;
1435 }
1436 nla_nest_end(msg, nl_ftypes);
1437 }
1438 nla_nest_end(msg, nl_ifs);
1439
1440 return 0;
1441 }
1442
1443 #define CMD(op, n) \
1444 do { \
1445 if (rdev->ops->op) { \
1446 i++; \
1447 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1448 goto nla_put_failure; \
1449 } \
1450 } while (0)
1451
1452 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1453 struct sk_buff *msg)
1454 {
1455 int i = 0;
1456
1457 /*
1458 * do *NOT* add anything into this function, new things need to be
1459 * advertised only to new versions of userspace that can deal with
1460 * the split (and they can't possibly care about new features...
1461 */
1462 CMD(add_virtual_intf, NEW_INTERFACE);
1463 CMD(change_virtual_intf, SET_INTERFACE);
1464 CMD(add_key, NEW_KEY);
1465 CMD(start_ap, START_AP);
1466 CMD(add_station, NEW_STATION);
1467 CMD(add_mpath, NEW_MPATH);
1468 CMD(update_mesh_config, SET_MESH_CONFIG);
1469 CMD(change_bss, SET_BSS);
1470 CMD(auth, AUTHENTICATE);
1471 CMD(assoc, ASSOCIATE);
1472 CMD(deauth, DEAUTHENTICATE);
1473 CMD(disassoc, DISASSOCIATE);
1474 CMD(join_ibss, JOIN_IBSS);
1475 CMD(join_mesh, JOIN_MESH);
1476 CMD(set_pmksa, SET_PMKSA);
1477 CMD(del_pmksa, DEL_PMKSA);
1478 CMD(flush_pmksa, FLUSH_PMKSA);
1479 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1480 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1481 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1482 CMD(mgmt_tx, FRAME);
1483 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1484 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1485 i++;
1486 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1487 goto nla_put_failure;
1488 }
1489 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1490 rdev->ops->join_mesh) {
1491 i++;
1492 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1493 goto nla_put_failure;
1494 }
1495 CMD(set_wds_peer, SET_WDS_PEER);
1496 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1497 CMD(tdls_mgmt, TDLS_MGMT);
1498 CMD(tdls_oper, TDLS_OPER);
1499 }
1500 if (rdev->wiphy.max_sched_scan_reqs)
1501 CMD(sched_scan_start, START_SCHED_SCAN);
1502 CMD(probe_client, PROBE_CLIENT);
1503 CMD(set_noack_map, SET_NOACK_MAP);
1504 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1505 i++;
1506 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1507 goto nla_put_failure;
1508 }
1509 CMD(start_p2p_device, START_P2P_DEVICE);
1510 CMD(set_mcast_rate, SET_MCAST_RATE);
1511 #ifdef CONFIG_NL80211_TESTMODE
1512 CMD(testmode_cmd, TESTMODE);
1513 #endif
1514
1515 if (rdev->ops->connect || rdev->ops->auth) {
1516 i++;
1517 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1518 goto nla_put_failure;
1519 }
1520
1521 if (rdev->ops->disconnect || rdev->ops->deauth) {
1522 i++;
1523 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1524 goto nla_put_failure;
1525 }
1526
1527 return i;
1528 nla_put_failure:
1529 return -ENOBUFS;
1530 }
1531
1532 struct nl80211_dump_wiphy_state {
1533 s64 filter_wiphy;
1534 long start;
1535 long split_start, band_start, chan_start, capa_start;
1536 bool split;
1537 };
1538
1539 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1540 enum nl80211_commands cmd,
1541 struct sk_buff *msg, u32 portid, u32 seq,
1542 int flags, struct nl80211_dump_wiphy_state *state)
1543 {
1544 void *hdr;
1545 struct nlattr *nl_bands, *nl_band;
1546 struct nlattr *nl_freqs, *nl_freq;
1547 struct nlattr *nl_cmds;
1548 enum nl80211_band band;
1549 struct ieee80211_channel *chan;
1550 int i;
1551 const struct ieee80211_txrx_stypes *mgmt_stypes =
1552 rdev->wiphy.mgmt_stypes;
1553 u32 features;
1554
1555 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1556 if (!hdr)
1557 return -ENOBUFS;
1558
1559 if (WARN_ON(!state))
1560 return -EINVAL;
1561
1562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1563 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1564 wiphy_name(&rdev->wiphy)) ||
1565 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1566 cfg80211_rdev_list_generation))
1567 goto nla_put_failure;
1568
1569 if (cmd != NL80211_CMD_NEW_WIPHY)
1570 goto finish;
1571
1572 switch (state->split_start) {
1573 case 0:
1574 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1575 rdev->wiphy.retry_short) ||
1576 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1577 rdev->wiphy.retry_long) ||
1578 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1579 rdev->wiphy.frag_threshold) ||
1580 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1581 rdev->wiphy.rts_threshold) ||
1582 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1583 rdev->wiphy.coverage_class) ||
1584 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1585 rdev->wiphy.max_scan_ssids) ||
1586 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1587 rdev->wiphy.max_sched_scan_ssids) ||
1588 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1589 rdev->wiphy.max_scan_ie_len) ||
1590 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1591 rdev->wiphy.max_sched_scan_ie_len) ||
1592 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1593 rdev->wiphy.max_match_sets) ||
1594 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1595 rdev->wiphy.max_sched_scan_plans) ||
1596 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1597 rdev->wiphy.max_sched_scan_plan_interval) ||
1598 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1599 rdev->wiphy.max_sched_scan_plan_iterations))
1600 goto nla_put_failure;
1601
1602 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1603 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1604 goto nla_put_failure;
1605 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1606 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1607 goto nla_put_failure;
1608 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1609 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1610 goto nla_put_failure;
1611 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1612 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1613 goto nla_put_failure;
1614 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1615 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1616 goto nla_put_failure;
1617 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1618 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1619 goto nla_put_failure;
1620 state->split_start++;
1621 if (state->split)
1622 break;
1623 case 1:
1624 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1625 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1626 rdev->wiphy.cipher_suites))
1627 goto nla_put_failure;
1628
1629 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1630 rdev->wiphy.max_num_pmkids))
1631 goto nla_put_failure;
1632
1633 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1634 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1635 goto nla_put_failure;
1636
1637 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1638 rdev->wiphy.available_antennas_tx) ||
1639 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1640 rdev->wiphy.available_antennas_rx))
1641 goto nla_put_failure;
1642
1643 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1644 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1645 rdev->wiphy.probe_resp_offload))
1646 goto nla_put_failure;
1647
1648 if ((rdev->wiphy.available_antennas_tx ||
1649 rdev->wiphy.available_antennas_rx) &&
1650 rdev->ops->get_antenna) {
1651 u32 tx_ant = 0, rx_ant = 0;
1652 int res;
1653
1654 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1655 if (!res) {
1656 if (nla_put_u32(msg,
1657 NL80211_ATTR_WIPHY_ANTENNA_TX,
1658 tx_ant) ||
1659 nla_put_u32(msg,
1660 NL80211_ATTR_WIPHY_ANTENNA_RX,
1661 rx_ant))
1662 goto nla_put_failure;
1663 }
1664 }
1665
1666 state->split_start++;
1667 if (state->split)
1668 break;
1669 case 2:
1670 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1671 rdev->wiphy.interface_modes))
1672 goto nla_put_failure;
1673 state->split_start++;
1674 if (state->split)
1675 break;
1676 case 3:
1677 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1678 if (!nl_bands)
1679 goto nla_put_failure;
1680
1681 for (band = state->band_start;
1682 band < NUM_NL80211_BANDS; band++) {
1683 struct ieee80211_supported_band *sband;
1684
1685 sband = rdev->wiphy.bands[band];
1686
1687 if (!sband)
1688 continue;
1689
1690 nl_band = nla_nest_start(msg, band);
1691 if (!nl_band)
1692 goto nla_put_failure;
1693
1694 switch (state->chan_start) {
1695 case 0:
1696 if (nl80211_send_band_rateinfo(msg, sband))
1697 goto nla_put_failure;
1698 state->chan_start++;
1699 if (state->split)
1700 break;
1701 default:
1702 /* add frequencies */
1703 nl_freqs = nla_nest_start(
1704 msg, NL80211_BAND_ATTR_FREQS);
1705 if (!nl_freqs)
1706 goto nla_put_failure;
1707
1708 for (i = state->chan_start - 1;
1709 i < sband->n_channels;
1710 i++) {
1711 nl_freq = nla_nest_start(msg, i);
1712 if (!nl_freq)
1713 goto nla_put_failure;
1714
1715 chan = &sband->channels[i];
1716
1717 if (nl80211_msg_put_channel(
1718 msg, &rdev->wiphy, chan,
1719 state->split))
1720 goto nla_put_failure;
1721
1722 nla_nest_end(msg, nl_freq);
1723 if (state->split)
1724 break;
1725 }
1726 if (i < sband->n_channels)
1727 state->chan_start = i + 2;
1728 else
1729 state->chan_start = 0;
1730 nla_nest_end(msg, nl_freqs);
1731 }
1732
1733 nla_nest_end(msg, nl_band);
1734
1735 if (state->split) {
1736 /* start again here */
1737 if (state->chan_start)
1738 band--;
1739 break;
1740 }
1741 }
1742 nla_nest_end(msg, nl_bands);
1743
1744 if (band < NUM_NL80211_BANDS)
1745 state->band_start = band + 1;
1746 else
1747 state->band_start = 0;
1748
1749 /* if bands & channels are done, continue outside */
1750 if (state->band_start == 0 && state->chan_start == 0)
1751 state->split_start++;
1752 if (state->split)
1753 break;
1754 case 4:
1755 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1756 if (!nl_cmds)
1757 goto nla_put_failure;
1758
1759 i = nl80211_add_commands_unsplit(rdev, msg);
1760 if (i < 0)
1761 goto nla_put_failure;
1762 if (state->split) {
1763 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1764 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1765 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1766 CMD(channel_switch, CHANNEL_SWITCH);
1767 CMD(set_qos_map, SET_QOS_MAP);
1768 if (rdev->wiphy.features &
1769 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1770 CMD(add_tx_ts, ADD_TX_TS);
1771 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1772 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1773 }
1774 #undef CMD
1775
1776 nla_nest_end(msg, nl_cmds);
1777 state->split_start++;
1778 if (state->split)
1779 break;
1780 case 5:
1781 if (rdev->ops->remain_on_channel &&
1782 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1783 nla_put_u32(msg,
1784 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1785 rdev->wiphy.max_remain_on_channel_duration))
1786 goto nla_put_failure;
1787
1788 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1789 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1790 goto nla_put_failure;
1791
1792 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1793 goto nla_put_failure;
1794 state->split_start++;
1795 if (state->split)
1796 break;
1797 case 6:
1798 #ifdef CONFIG_PM
1799 if (nl80211_send_wowlan(msg, rdev, state->split))
1800 goto nla_put_failure;
1801 state->split_start++;
1802 if (state->split)
1803 break;
1804 #else
1805 state->split_start++;
1806 #endif
1807 case 7:
1808 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1809 rdev->wiphy.software_iftypes))
1810 goto nla_put_failure;
1811
1812 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1813 state->split))
1814 goto nla_put_failure;
1815
1816 state->split_start++;
1817 if (state->split)
1818 break;
1819 case 8:
1820 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1821 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1822 rdev->wiphy.ap_sme_capa))
1823 goto nla_put_failure;
1824
1825 features = rdev->wiphy.features;
1826 /*
1827 * We can only add the per-channel limit information if the
1828 * dump is split, otherwise it makes it too big. Therefore
1829 * only advertise it in that case.
1830 */
1831 if (state->split)
1832 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1833 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1834 goto nla_put_failure;
1835
1836 if (rdev->wiphy.ht_capa_mod_mask &&
1837 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1838 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1839 rdev->wiphy.ht_capa_mod_mask))
1840 goto nla_put_failure;
1841
1842 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1843 rdev->wiphy.max_acl_mac_addrs &&
1844 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1845 rdev->wiphy.max_acl_mac_addrs))
1846 goto nla_put_failure;
1847
1848 /*
1849 * Any information below this point is only available to
1850 * applications that can deal with it being split. This
1851 * helps ensure that newly added capabilities don't break
1852 * older tools by overrunning their buffers.
1853 *
1854 * We still increment split_start so that in the split
1855 * case we'll continue with more data in the next round,
1856 * but break unconditionally so unsplit data stops here.
1857 */
1858 state->split_start++;
1859 break;
1860 case 9:
1861 if (rdev->wiphy.extended_capabilities &&
1862 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1863 rdev->wiphy.extended_capabilities_len,
1864 rdev->wiphy.extended_capabilities) ||
1865 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1866 rdev->wiphy.extended_capabilities_len,
1867 rdev->wiphy.extended_capabilities_mask)))
1868 goto nla_put_failure;
1869
1870 if (rdev->wiphy.vht_capa_mod_mask &&
1871 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1872 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1873 rdev->wiphy.vht_capa_mod_mask))
1874 goto nla_put_failure;
1875
1876 state->split_start++;
1877 break;
1878 case 10:
1879 if (nl80211_send_coalesce(msg, rdev))
1880 goto nla_put_failure;
1881
1882 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1883 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1884 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1885 goto nla_put_failure;
1886
1887 if (rdev->wiphy.max_ap_assoc_sta &&
1888 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1889 rdev->wiphy.max_ap_assoc_sta))
1890 goto nla_put_failure;
1891
1892 state->split_start++;
1893 break;
1894 case 11:
1895 if (rdev->wiphy.n_vendor_commands) {
1896 const struct nl80211_vendor_cmd_info *info;
1897 struct nlattr *nested;
1898
1899 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1900 if (!nested)
1901 goto nla_put_failure;
1902
1903 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1904 info = &rdev->wiphy.vendor_commands[i].info;
1905 if (nla_put(msg, i + 1, sizeof(*info), info))
1906 goto nla_put_failure;
1907 }
1908 nla_nest_end(msg, nested);
1909 }
1910
1911 if (rdev->wiphy.n_vendor_events) {
1912 const struct nl80211_vendor_cmd_info *info;
1913 struct nlattr *nested;
1914
1915 nested = nla_nest_start(msg,
1916 NL80211_ATTR_VENDOR_EVENTS);
1917 if (!nested)
1918 goto nla_put_failure;
1919
1920 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1921 info = &rdev->wiphy.vendor_events[i];
1922 if (nla_put(msg, i + 1, sizeof(*info), info))
1923 goto nla_put_failure;
1924 }
1925 nla_nest_end(msg, nested);
1926 }
1927 state->split_start++;
1928 break;
1929 case 12:
1930 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1931 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1932 rdev->wiphy.max_num_csa_counters))
1933 goto nla_put_failure;
1934
1935 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1936 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1937 goto nla_put_failure;
1938
1939 if (rdev->wiphy.max_sched_scan_reqs &&
1940 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1941 rdev->wiphy.max_sched_scan_reqs))
1942 goto nla_put_failure;
1943
1944 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1945 sizeof(rdev->wiphy.ext_features),
1946 rdev->wiphy.ext_features))
1947 goto nla_put_failure;
1948
1949 if (rdev->wiphy.bss_select_support) {
1950 struct nlattr *nested;
1951 u32 bss_select_support = rdev->wiphy.bss_select_support;
1952
1953 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1954 if (!nested)
1955 goto nla_put_failure;
1956
1957 i = 0;
1958 while (bss_select_support) {
1959 if ((bss_select_support & 1) &&
1960 nla_put_flag(msg, i))
1961 goto nla_put_failure;
1962 i++;
1963 bss_select_support >>= 1;
1964 }
1965 nla_nest_end(msg, nested);
1966 }
1967
1968 state->split_start++;
1969 break;
1970 case 13:
1971 if (rdev->wiphy.num_iftype_ext_capab &&
1972 rdev->wiphy.iftype_ext_capab) {
1973 struct nlattr *nested_ext_capab, *nested;
1974
1975 nested = nla_nest_start(msg,
1976 NL80211_ATTR_IFTYPE_EXT_CAPA);
1977 if (!nested)
1978 goto nla_put_failure;
1979
1980 for (i = state->capa_start;
1981 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1982 const struct wiphy_iftype_ext_capab *capab;
1983
1984 capab = &rdev->wiphy.iftype_ext_capab[i];
1985
1986 nested_ext_capab = nla_nest_start(msg, i);
1987 if (!nested_ext_capab ||
1988 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1989 capab->iftype) ||
1990 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1991 capab->extended_capabilities_len,
1992 capab->extended_capabilities) ||
1993 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1994 capab->extended_capabilities_len,
1995 capab->extended_capabilities_mask))
1996 goto nla_put_failure;
1997
1998 nla_nest_end(msg, nested_ext_capab);
1999 if (state->split)
2000 break;
2001 }
2002 nla_nest_end(msg, nested);
2003 if (i < rdev->wiphy.num_iftype_ext_capab) {
2004 state->capa_start = i + 1;
2005 break;
2006 }
2007 }
2008
2009 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2010 rdev->wiphy.nan_supported_bands))
2011 goto nla_put_failure;
2012
2013 if (wiphy_ext_feature_isset(&rdev->wiphy,
2014 NL80211_EXT_FEATURE_TXQS)) {
2015 struct cfg80211_txq_stats txqstats = {};
2016 int res;
2017
2018 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2019 if (!res &&
2020 !nl80211_put_txq_stats(msg, &txqstats,
2021 NL80211_ATTR_TXQ_STATS))
2022 goto nla_put_failure;
2023
2024 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2025 rdev->wiphy.txq_limit))
2026 goto nla_put_failure;
2027 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2028 rdev->wiphy.txq_memory_limit))
2029 goto nla_put_failure;
2030 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2031 rdev->wiphy.txq_quantum))
2032 goto nla_put_failure;
2033 }
2034
2035 /* done */
2036 state->split_start = 0;
2037 break;
2038 }
2039 finish:
2040 genlmsg_end(msg, hdr);
2041 return 0;
2042
2043 nla_put_failure:
2044 genlmsg_cancel(msg, hdr);
2045 return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2049 struct netlink_callback *cb,
2050 struct nl80211_dump_wiphy_state *state)
2051 {
2052 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2053 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2054 nl80211_fam.maxattr, nl80211_policy, NULL);
2055 /* ignore parse errors for backward compatibility */
2056 if (ret)
2057 return 0;
2058
2059 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2060 if (tb[NL80211_ATTR_WIPHY])
2061 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2062 if (tb[NL80211_ATTR_WDEV])
2063 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2064 if (tb[NL80211_ATTR_IFINDEX]) {
2065 struct net_device *netdev;
2066 struct cfg80211_registered_device *rdev;
2067 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2068
2069 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2070 if (!netdev)
2071 return -ENODEV;
2072 if (netdev->ieee80211_ptr) {
2073 rdev = wiphy_to_rdev(
2074 netdev->ieee80211_ptr->wiphy);
2075 state->filter_wiphy = rdev->wiphy_idx;
2076 }
2077 }
2078
2079 return 0;
2080 }
2081
2082 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2083 {
2084 int idx = 0, ret;
2085 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2086 struct cfg80211_registered_device *rdev;
2087
2088 rtnl_lock();
2089 if (!state) {
2090 state = kzalloc(sizeof(*state), GFP_KERNEL);
2091 if (!state) {
2092 rtnl_unlock();
2093 return -ENOMEM;
2094 }
2095 state->filter_wiphy = -1;
2096 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2097 if (ret) {
2098 kfree(state);
2099 rtnl_unlock();
2100 return ret;
2101 }
2102 cb->args[0] = (long)state;
2103 }
2104
2105 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2106 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2107 continue;
2108 if (++idx <= state->start)
2109 continue;
2110 if (state->filter_wiphy != -1 &&
2111 state->filter_wiphy != rdev->wiphy_idx)
2112 continue;
2113 /* attempt to fit multiple wiphy data chunks into the skb */
2114 do {
2115 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2116 skb,
2117 NETLINK_CB(cb->skb).portid,
2118 cb->nlh->nlmsg_seq,
2119 NLM_F_MULTI, state);
2120 if (ret < 0) {
2121 /*
2122 * If sending the wiphy data didn't fit (ENOBUFS
2123 * or EMSGSIZE returned), this SKB is still
2124 * empty (so it's not too big because another
2125 * wiphy dataset is already in the skb) and
2126 * we've not tried to adjust the dump allocation
2127 * yet ... then adjust the alloc size to be
2128 * bigger, and return 1 but with the empty skb.
2129 * This results in an empty message being RX'ed
2130 * in userspace, but that is ignored.
2131 *
2132 * We can then retry with the larger buffer.
2133 */
2134 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2135 !skb->len && !state->split &&
2136 cb->min_dump_alloc < 4096) {
2137 cb->min_dump_alloc = 4096;
2138 state->split_start = 0;
2139 rtnl_unlock();
2140 return 1;
2141 }
2142 idx--;
2143 break;
2144 }
2145 } while (state->split_start > 0);
2146 break;
2147 }
2148 rtnl_unlock();
2149
2150 state->start = idx;
2151
2152 return skb->len;
2153 }
2154
2155 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2156 {
2157 kfree((void *)cb->args[0]);
2158 return 0;
2159 }
2160
2161 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2162 {
2163 struct sk_buff *msg;
2164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2165 struct nl80211_dump_wiphy_state state = {};
2166
2167 msg = nlmsg_new(4096, GFP_KERNEL);
2168 if (!msg)
2169 return -ENOMEM;
2170
2171 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2172 info->snd_portid, info->snd_seq, 0,
2173 &state) < 0) {
2174 nlmsg_free(msg);
2175 return -ENOBUFS;
2176 }
2177
2178 return genlmsg_reply(msg, info);
2179 }
2180
2181 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2182 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2183 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2184 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2185 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2186 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2187 };
2188
2189 static int parse_txq_params(struct nlattr *tb[],
2190 struct ieee80211_txq_params *txq_params)
2191 {
2192 u8 ac;
2193
2194 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2195 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2196 !tb[NL80211_TXQ_ATTR_AIFS])
2197 return -EINVAL;
2198
2199 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2200 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2201 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2202 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2203 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2204
2205 if (ac >= NL80211_NUM_ACS)
2206 return -EINVAL;
2207 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2208 return 0;
2209 }
2210
2211 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2212 {
2213 /*
2214 * You can only set the channel explicitly for WDS interfaces,
2215 * all others have their channel managed via their respective
2216 * "establish a connection" command (connect, join, ...)
2217 *
2218 * For AP/GO and mesh mode, the channel can be set with the
2219 * channel userspace API, but is only stored and passed to the
2220 * low-level driver when the AP starts or the mesh is joined.
2221 * This is for backward compatibility, userspace can also give
2222 * the channel in the start-ap or join-mesh commands instead.
2223 *
2224 * Monitors are special as they are normally slaved to
2225 * whatever else is going on, so they have their own special
2226 * operation to set the monitor channel if possible.
2227 */
2228 return !wdev ||
2229 wdev->iftype == NL80211_IFTYPE_AP ||
2230 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2231 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2232 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2233 }
2234
2235 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2236 struct genl_info *info,
2237 struct cfg80211_chan_def *chandef)
2238 {
2239 u32 control_freq;
2240
2241 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2242 return -EINVAL;
2243
2244 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2245
2246 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2247 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2248 chandef->center_freq1 = control_freq;
2249 chandef->center_freq2 = 0;
2250
2251 /* Primary channel not allowed */
2252 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2253 return -EINVAL;
2254
2255 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2256 enum nl80211_channel_type chantype;
2257
2258 chantype = nla_get_u32(
2259 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2260
2261 switch (chantype) {
2262 case NL80211_CHAN_NO_HT:
2263 case NL80211_CHAN_HT20:
2264 case NL80211_CHAN_HT40PLUS:
2265 case NL80211_CHAN_HT40MINUS:
2266 cfg80211_chandef_create(chandef, chandef->chan,
2267 chantype);
2268 /* user input for center_freq is incorrect */
2269 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2270 chandef->center_freq1 != nla_get_u32(
2271 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2272 return -EINVAL;
2273 /* center_freq2 must be zero */
2274 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2275 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2276 return -EINVAL;
2277 break;
2278 default:
2279 return -EINVAL;
2280 }
2281 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2282 chandef->width =
2283 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2284 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2285 chandef->center_freq1 =
2286 nla_get_u32(
2287 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2288 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2289 chandef->center_freq2 =
2290 nla_get_u32(
2291 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2292 }
2293
2294 if (!cfg80211_chandef_valid(chandef))
2295 return -EINVAL;
2296
2297 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2298 IEEE80211_CHAN_DISABLED))
2299 return -EINVAL;
2300
2301 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2302 chandef->width == NL80211_CHAN_WIDTH_10) &&
2303 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2304 return -EINVAL;
2305
2306 return 0;
2307 }
2308
2309 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2310 struct net_device *dev,
2311 struct genl_info *info)
2312 {
2313 struct cfg80211_chan_def chandef;
2314 int result;
2315 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2316 struct wireless_dev *wdev = NULL;
2317
2318 if (dev)
2319 wdev = dev->ieee80211_ptr;
2320 if (!nl80211_can_set_dev_channel(wdev))
2321 return -EOPNOTSUPP;
2322 if (wdev)
2323 iftype = wdev->iftype;
2324
2325 result = nl80211_parse_chandef(rdev, info, &chandef);
2326 if (result)
2327 return result;
2328
2329 switch (iftype) {
2330 case NL80211_IFTYPE_AP:
2331 case NL80211_IFTYPE_P2P_GO:
2332 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2333 iftype)) {
2334 result = -EINVAL;
2335 break;
2336 }
2337 if (wdev->beacon_interval) {
2338 if (!dev || !rdev->ops->set_ap_chanwidth ||
2339 !(rdev->wiphy.features &
2340 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2341 result = -EBUSY;
2342 break;
2343 }
2344
2345 /* Only allow dynamic channel width changes */
2346 if (chandef.chan != wdev->preset_chandef.chan) {
2347 result = -EBUSY;
2348 break;
2349 }
2350 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2351 if (result)
2352 break;
2353 }
2354 wdev->preset_chandef = chandef;
2355 result = 0;
2356 break;
2357 case NL80211_IFTYPE_MESH_POINT:
2358 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2359 break;
2360 case NL80211_IFTYPE_MONITOR:
2361 result = cfg80211_set_monitor_channel(rdev, &chandef);
2362 break;
2363 default:
2364 result = -EINVAL;
2365 }
2366
2367 return result;
2368 }
2369
2370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2371 {
2372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2373 struct net_device *netdev = info->user_ptr[1];
2374
2375 return __nl80211_set_channel(rdev, netdev, info);
2376 }
2377
2378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2379 {
2380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381 struct net_device *dev = info->user_ptr[1];
2382 struct wireless_dev *wdev = dev->ieee80211_ptr;
2383 const u8 *bssid;
2384
2385 if (!info->attrs[NL80211_ATTR_MAC])
2386 return -EINVAL;
2387
2388 if (netif_running(dev))
2389 return -EBUSY;
2390
2391 if (!rdev->ops->set_wds_peer)
2392 return -EOPNOTSUPP;
2393
2394 if (wdev->iftype != NL80211_IFTYPE_WDS)
2395 return -EOPNOTSUPP;
2396
2397 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2398 return rdev_set_wds_peer(rdev, dev, bssid);
2399 }
2400
2401 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2402 {
2403 struct cfg80211_registered_device *rdev;
2404 struct net_device *netdev = NULL;
2405 struct wireless_dev *wdev;
2406 int result = 0, rem_txq_params = 0;
2407 struct nlattr *nl_txq_params;
2408 u32 changed;
2409 u8 retry_short = 0, retry_long = 0;
2410 u32 frag_threshold = 0, rts_threshold = 0;
2411 u8 coverage_class = 0;
2412 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2413
2414 ASSERT_RTNL();
2415
2416 /*
2417 * Try to find the wiphy and netdev. Normally this
2418 * function shouldn't need the netdev, but this is
2419 * done for backward compatibility -- previously
2420 * setting the channel was done per wiphy, but now
2421 * it is per netdev. Previous userland like hostapd
2422 * also passed a netdev to set_wiphy, so that it is
2423 * possible to let that go to the right netdev!
2424 */
2425
2426 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2427 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2428
2429 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2430 if (netdev && netdev->ieee80211_ptr)
2431 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2432 else
2433 netdev = NULL;
2434 }
2435
2436 if (!netdev) {
2437 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2438 info->attrs);
2439 if (IS_ERR(rdev))
2440 return PTR_ERR(rdev);
2441 wdev = NULL;
2442 netdev = NULL;
2443 result = 0;
2444 } else
2445 wdev = netdev->ieee80211_ptr;
2446
2447 /*
2448 * end workaround code, by now the rdev is available
2449 * and locked, and wdev may or may not be NULL.
2450 */
2451
2452 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2453 result = cfg80211_dev_rename(
2454 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2455
2456 if (result)
2457 return result;
2458
2459 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2460 struct ieee80211_txq_params txq_params;
2461 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2462
2463 if (!rdev->ops->set_txq_params)
2464 return -EOPNOTSUPP;
2465
2466 if (!netdev)
2467 return -EINVAL;
2468
2469 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2470 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2471 return -EINVAL;
2472
2473 if (!netif_running(netdev))
2474 return -ENETDOWN;
2475
2476 nla_for_each_nested(nl_txq_params,
2477 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2478 rem_txq_params) {
2479 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2480 nl_txq_params,
2481 txq_params_policy,
2482 info->extack);
2483 if (result)
2484 return result;
2485 result = parse_txq_params(tb, &txq_params);
2486 if (result)
2487 return result;
2488
2489 result = rdev_set_txq_params(rdev, netdev,
2490 &txq_params);
2491 if (result)
2492 return result;
2493 }
2494 }
2495
2496 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2497 result = __nl80211_set_channel(
2498 rdev,
2499 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2500 info);
2501 if (result)
2502 return result;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2506 struct wireless_dev *txp_wdev = wdev;
2507 enum nl80211_tx_power_setting type;
2508 int idx, mbm = 0;
2509
2510 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2511 txp_wdev = NULL;
2512
2513 if (!rdev->ops->set_tx_power)
2514 return -EOPNOTSUPP;
2515
2516 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2517 type = nla_get_u32(info->attrs[idx]);
2518
2519 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2520 (type != NL80211_TX_POWER_AUTOMATIC))
2521 return -EINVAL;
2522
2523 if (type != NL80211_TX_POWER_AUTOMATIC) {
2524 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2525 mbm = nla_get_u32(info->attrs[idx]);
2526 }
2527
2528 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2529 if (result)
2530 return result;
2531 }
2532
2533 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2534 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2535 u32 tx_ant, rx_ant;
2536
2537 if ((!rdev->wiphy.available_antennas_tx &&
2538 !rdev->wiphy.available_antennas_rx) ||
2539 !rdev->ops->set_antenna)
2540 return -EOPNOTSUPP;
2541
2542 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2543 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2544
2545 /* reject antenna configurations which don't match the
2546 * available antenna masks, except for the "all" mask */
2547 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2548 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2549 return -EINVAL;
2550
2551 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2552 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2553
2554 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2555 if (result)
2556 return result;
2557 }
2558
2559 changed = 0;
2560
2561 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2562 retry_short = nla_get_u8(
2563 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2564 if (retry_short == 0)
2565 return -EINVAL;
2566
2567 changed |= WIPHY_PARAM_RETRY_SHORT;
2568 }
2569
2570 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2571 retry_long = nla_get_u8(
2572 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2573 if (retry_long == 0)
2574 return -EINVAL;
2575
2576 changed |= WIPHY_PARAM_RETRY_LONG;
2577 }
2578
2579 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2580 frag_threshold = nla_get_u32(
2581 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2582 if (frag_threshold < 256)
2583 return -EINVAL;
2584
2585 if (frag_threshold != (u32) -1) {
2586 /*
2587 * Fragments (apart from the last one) are required to
2588 * have even length. Make the fragmentation code
2589 * simpler by stripping LSB should someone try to use
2590 * odd threshold value.
2591 */
2592 frag_threshold &= ~0x1;
2593 }
2594 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2595 }
2596
2597 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2598 rts_threshold = nla_get_u32(
2599 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2600 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2601 }
2602
2603 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2604 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2605 return -EINVAL;
2606
2607 coverage_class = nla_get_u8(
2608 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2609 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2610 }
2611
2612 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2613 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2614 return -EOPNOTSUPP;
2615
2616 changed |= WIPHY_PARAM_DYN_ACK;
2617 }
2618
2619 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2620 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2621 NL80211_EXT_FEATURE_TXQS))
2622 return -EOPNOTSUPP;
2623 txq_limit = nla_get_u32(
2624 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2625 changed |= WIPHY_PARAM_TXQ_LIMIT;
2626 }
2627
2628 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2629 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2630 NL80211_EXT_FEATURE_TXQS))
2631 return -EOPNOTSUPP;
2632 txq_memory_limit = nla_get_u32(
2633 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2634 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2635 }
2636
2637 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2638 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2639 NL80211_EXT_FEATURE_TXQS))
2640 return -EOPNOTSUPP;
2641 txq_quantum = nla_get_u32(
2642 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2643 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2644 }
2645
2646 if (changed) {
2647 u8 old_retry_short, old_retry_long;
2648 u32 old_frag_threshold, old_rts_threshold;
2649 u8 old_coverage_class;
2650 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2651
2652 if (!rdev->ops->set_wiphy_params)
2653 return -EOPNOTSUPP;
2654
2655 old_retry_short = rdev->wiphy.retry_short;
2656 old_retry_long = rdev->wiphy.retry_long;
2657 old_frag_threshold = rdev->wiphy.frag_threshold;
2658 old_rts_threshold = rdev->wiphy.rts_threshold;
2659 old_coverage_class = rdev->wiphy.coverage_class;
2660 old_txq_limit = rdev->wiphy.txq_limit;
2661 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2662 old_txq_quantum = rdev->wiphy.txq_quantum;
2663
2664 if (changed & WIPHY_PARAM_RETRY_SHORT)
2665 rdev->wiphy.retry_short = retry_short;
2666 if (changed & WIPHY_PARAM_RETRY_LONG)
2667 rdev->wiphy.retry_long = retry_long;
2668 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2669 rdev->wiphy.frag_threshold = frag_threshold;
2670 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2671 rdev->wiphy.rts_threshold = rts_threshold;
2672 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2673 rdev->wiphy.coverage_class = coverage_class;
2674 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2675 rdev->wiphy.txq_limit = txq_limit;
2676 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2677 rdev->wiphy.txq_memory_limit = txq_memory_limit;
2678 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2679 rdev->wiphy.txq_quantum = txq_quantum;
2680
2681 result = rdev_set_wiphy_params(rdev, changed);
2682 if (result) {
2683 rdev->wiphy.retry_short = old_retry_short;
2684 rdev->wiphy.retry_long = old_retry_long;
2685 rdev->wiphy.frag_threshold = old_frag_threshold;
2686 rdev->wiphy.rts_threshold = old_rts_threshold;
2687 rdev->wiphy.coverage_class = old_coverage_class;
2688 rdev->wiphy.txq_limit = old_txq_limit;
2689 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2690 rdev->wiphy.txq_quantum = old_txq_quantum;
2691 return result;
2692 }
2693 }
2694 return 0;
2695 }
2696
2697 static inline u64 wdev_id(struct wireless_dev *wdev)
2698 {
2699 return (u64)wdev->identifier |
2700 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2701 }
2702
2703 static int nl80211_send_chandef(struct sk_buff *msg,
2704 const struct cfg80211_chan_def *chandef)
2705 {
2706 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2707 return -EINVAL;
2708
2709 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2710 chandef->chan->center_freq))
2711 return -ENOBUFS;
2712 switch (chandef->width) {
2713 case NL80211_CHAN_WIDTH_20_NOHT:
2714 case NL80211_CHAN_WIDTH_20:
2715 case NL80211_CHAN_WIDTH_40:
2716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2717 cfg80211_get_chandef_type(chandef)))
2718 return -ENOBUFS;
2719 break;
2720 default:
2721 break;
2722 }
2723 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2724 return -ENOBUFS;
2725 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2726 return -ENOBUFS;
2727 if (chandef->center_freq2 &&
2728 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2729 return -ENOBUFS;
2730 return 0;
2731 }
2732
2733 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2734 struct cfg80211_registered_device *rdev,
2735 struct wireless_dev *wdev, bool removal)
2736 {
2737 struct net_device *dev = wdev->netdev;
2738 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2739 void *hdr;
2740
2741 if (removal)
2742 cmd = NL80211_CMD_DEL_INTERFACE;
2743
2744 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2745 if (!hdr)
2746 return -1;
2747
2748 if (dev &&
2749 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2750 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2751 goto nla_put_failure;
2752
2753 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2754 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2755 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2756 NL80211_ATTR_PAD) ||
2757 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2758 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2759 rdev->devlist_generation ^
2760 (cfg80211_rdev_list_generation << 2)))
2761 goto nla_put_failure;
2762
2763 if (rdev->ops->get_channel) {
2764 int ret;
2765 struct cfg80211_chan_def chandef;
2766
2767 ret = rdev_get_channel(rdev, wdev, &chandef);
2768 if (ret == 0) {
2769 if (nl80211_send_chandef(msg, &chandef))
2770 goto nla_put_failure;
2771 }
2772 }
2773
2774 if (rdev->ops->get_tx_power) {
2775 int dbm, ret;
2776
2777 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2778 if (ret == 0 &&
2779 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2780 DBM_TO_MBM(dbm)))
2781 goto nla_put_failure;
2782 }
2783
2784 wdev_lock(wdev);
2785 switch (wdev->iftype) {
2786 case NL80211_IFTYPE_AP:
2787 if (wdev->ssid_len &&
2788 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2789 goto nla_put_failure_locked;
2790 break;
2791 case NL80211_IFTYPE_STATION:
2792 case NL80211_IFTYPE_P2P_CLIENT:
2793 case NL80211_IFTYPE_ADHOC: {
2794 const u8 *ssid_ie;
2795 if (!wdev->current_bss)
2796 break;
2797 rcu_read_lock();
2798 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2799 WLAN_EID_SSID);
2800 if (ssid_ie &&
2801 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2802 goto nla_put_failure_rcu_locked;
2803 rcu_read_unlock();
2804 break;
2805 }
2806 default:
2807 /* nothing */
2808 break;
2809 }
2810 wdev_unlock(wdev);
2811
2812 if (rdev->ops->get_txq_stats) {
2813 struct cfg80211_txq_stats txqstats = {};
2814 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2815
2816 if (ret == 0 &&
2817 !nl80211_put_txq_stats(msg, &txqstats,
2818 NL80211_ATTR_TXQ_STATS))
2819 goto nla_put_failure;
2820 }
2821
2822 genlmsg_end(msg, hdr);
2823 return 0;
2824
2825 nla_put_failure_rcu_locked:
2826 rcu_read_unlock();
2827 nla_put_failure_locked:
2828 wdev_unlock(wdev);
2829 nla_put_failure:
2830 genlmsg_cancel(msg, hdr);
2831 return -EMSGSIZE;
2832 }
2833
2834 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2835 {
2836 int wp_idx = 0;
2837 int if_idx = 0;
2838 int wp_start = cb->args[0];
2839 int if_start = cb->args[1];
2840 int filter_wiphy = -1;
2841 struct cfg80211_registered_device *rdev;
2842 struct wireless_dev *wdev;
2843 int ret;
2844
2845 rtnl_lock();
2846 if (!cb->args[2]) {
2847 struct nl80211_dump_wiphy_state state = {
2848 .filter_wiphy = -1,
2849 };
2850
2851 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2852 if (ret)
2853 goto out_unlock;
2854
2855 filter_wiphy = state.filter_wiphy;
2856
2857 /*
2858 * if filtering, set cb->args[2] to +1 since 0 is the default
2859 * value needed to determine that parsing is necessary.
2860 */
2861 if (filter_wiphy >= 0)
2862 cb->args[2] = filter_wiphy + 1;
2863 else
2864 cb->args[2] = -1;
2865 } else if (cb->args[2] > 0) {
2866 filter_wiphy = cb->args[2] - 1;
2867 }
2868
2869 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2870 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2871 continue;
2872 if (wp_idx < wp_start) {
2873 wp_idx++;
2874 continue;
2875 }
2876
2877 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2878 continue;
2879
2880 if_idx = 0;
2881
2882 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2883 if (if_idx < if_start) {
2884 if_idx++;
2885 continue;
2886 }
2887 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2888 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2889 rdev, wdev, false) < 0) {
2890 goto out;
2891 }
2892 if_idx++;
2893 }
2894
2895 wp_idx++;
2896 }
2897 out:
2898 cb->args[0] = wp_idx;
2899 cb->args[1] = if_idx;
2900
2901 ret = skb->len;
2902 out_unlock:
2903 rtnl_unlock();
2904
2905 return ret;
2906 }
2907
2908 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2909 {
2910 struct sk_buff *msg;
2911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912 struct wireless_dev *wdev = info->user_ptr[1];
2913
2914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2915 if (!msg)
2916 return -ENOMEM;
2917
2918 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2919 rdev, wdev, false) < 0) {
2920 nlmsg_free(msg);
2921 return -ENOBUFS;
2922 }
2923
2924 return genlmsg_reply(msg, info);
2925 }
2926
2927 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2928 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2929 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2930 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2931 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2932 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2933 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2934 };
2935
2936 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2937 {
2938 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2939 int flag;
2940
2941 *mntrflags = 0;
2942
2943 if (!nla)
2944 return -EINVAL;
2945
2946 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2947 mntr_flags_policy, NULL))
2948 return -EINVAL;
2949
2950 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2951 if (flags[flag])
2952 *mntrflags |= (1<<flag);
2953
2954 *mntrflags |= MONITOR_FLAG_CHANGED;
2955
2956 return 0;
2957 }
2958
2959 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2960 enum nl80211_iftype type,
2961 struct genl_info *info,
2962 struct vif_params *params)
2963 {
2964 bool change = false;
2965 int err;
2966
2967 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2968 if (type != NL80211_IFTYPE_MONITOR)
2969 return -EINVAL;
2970
2971 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2972 &params->flags);
2973 if (err)
2974 return err;
2975
2976 change = true;
2977 }
2978
2979 if (params->flags & MONITOR_FLAG_ACTIVE &&
2980 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2981 return -EOPNOTSUPP;
2982
2983 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2984 const u8 *mumimo_groups;
2985 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2986
2987 if (type != NL80211_IFTYPE_MONITOR)
2988 return -EINVAL;
2989
2990 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2991 return -EOPNOTSUPP;
2992
2993 mumimo_groups =
2994 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2995
2996 /* bits 0 and 63 are reserved and must be zero */
2997 if ((mumimo_groups[0] & BIT(0)) ||
2998 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2999 return -EINVAL;
3000
3001 params->vht_mumimo_groups = mumimo_groups;
3002 change = true;
3003 }
3004
3005 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3006 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3007
3008 if (type != NL80211_IFTYPE_MONITOR)
3009 return -EINVAL;
3010
3011 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3012 return -EOPNOTSUPP;
3013
3014 params->vht_mumimo_follow_addr =
3015 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3016 change = true;
3017 }
3018
3019 return change ? 1 : 0;
3020 }
3021
3022 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3023 struct net_device *netdev, u8 use_4addr,
3024 enum nl80211_iftype iftype)
3025 {
3026 if (!use_4addr) {
3027 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3028 return -EBUSY;
3029 return 0;
3030 }
3031
3032 switch (iftype) {
3033 case NL80211_IFTYPE_AP_VLAN:
3034 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3035 return 0;
3036 break;
3037 case NL80211_IFTYPE_STATION:
3038 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3039 return 0;
3040 break;
3041 default:
3042 break;
3043 }
3044
3045 return -EOPNOTSUPP;
3046 }
3047
3048 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3049 {
3050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051 struct vif_params params;
3052 int err;
3053 enum nl80211_iftype otype, ntype;
3054 struct net_device *dev = info->user_ptr[1];
3055 bool change = false;
3056
3057 memset(&params, 0, sizeof(params));
3058
3059 otype = ntype = dev->ieee80211_ptr->iftype;
3060
3061 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3062 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3063 if (otype != ntype)
3064 change = true;
3065 if (ntype > NL80211_IFTYPE_MAX)
3066 return -EINVAL;
3067 }
3068
3069 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3070 struct wireless_dev *wdev = dev->ieee80211_ptr;
3071
3072 if (ntype != NL80211_IFTYPE_MESH_POINT)
3073 return -EINVAL;
3074 if (netif_running(dev))
3075 return -EBUSY;
3076
3077 wdev_lock(wdev);
3078 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3079 IEEE80211_MAX_MESH_ID_LEN);
3080 wdev->mesh_id_up_len =
3081 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3082 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3083 wdev->mesh_id_up_len);
3084 wdev_unlock(wdev);
3085 }
3086
3087 if (info->attrs[NL80211_ATTR_4ADDR]) {
3088 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3089 change = true;
3090 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3091 if (err)
3092 return err;
3093 } else {
3094 params.use_4addr = -1;
3095 }
3096
3097 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3098 if (err < 0)
3099 return err;
3100 if (err > 0)
3101 change = true;
3102
3103 if (change)
3104 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3105 else
3106 err = 0;
3107
3108 if (!err && params.use_4addr != -1)
3109 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3110
3111 return err;
3112 }
3113
3114 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3115 {
3116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3117 struct vif_params params;
3118 struct wireless_dev *wdev;
3119 struct sk_buff *msg;
3120 int err;
3121 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3122
3123 /* to avoid failing a new interface creation due to pending removal */
3124 cfg80211_destroy_ifaces(rdev);
3125
3126 memset(&params, 0, sizeof(params));
3127
3128 if (!info->attrs[NL80211_ATTR_IFNAME])
3129 return -EINVAL;
3130
3131 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3132 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3133 if (type > NL80211_IFTYPE_MAX)
3134 return -EINVAL;
3135 }
3136
3137 if (!rdev->ops->add_virtual_intf ||
3138 !(rdev->wiphy.interface_modes & (1 << type)))
3139 return -EOPNOTSUPP;
3140
3141 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3142 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3143 info->attrs[NL80211_ATTR_MAC]) {
3144 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3145 ETH_ALEN);
3146 if (!is_valid_ether_addr(params.macaddr))
3147 return -EADDRNOTAVAIL;
3148 }
3149
3150 if (info->attrs[NL80211_ATTR_4ADDR]) {
3151 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3152 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3153 if (err)
3154 return err;
3155 }
3156
3157 err = nl80211_parse_mon_options(rdev, type, info, &params);
3158 if (err < 0)
3159 return err;
3160
3161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162 if (!msg)
3163 return -ENOMEM;
3164
3165 wdev = rdev_add_virtual_intf(rdev,
3166 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3167 NET_NAME_USER, type, &params);
3168 if (WARN_ON(!wdev)) {
3169 nlmsg_free(msg);
3170 return -EPROTO;
3171 } else if (IS_ERR(wdev)) {
3172 nlmsg_free(msg);
3173 return PTR_ERR(wdev);
3174 }
3175
3176 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3177 wdev->owner_nlportid = info->snd_portid;
3178
3179 switch (type) {
3180 case NL80211_IFTYPE_MESH_POINT:
3181 if (!info->attrs[NL80211_ATTR_MESH_ID])
3182 break;
3183 wdev_lock(wdev);
3184 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3185 IEEE80211_MAX_MESH_ID_LEN);
3186 wdev->mesh_id_up_len =
3187 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3188 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3189 wdev->mesh_id_up_len);
3190 wdev_unlock(wdev);
3191 break;
3192 case NL80211_IFTYPE_NAN:
3193 case NL80211_IFTYPE_P2P_DEVICE:
3194 /*
3195 * P2P Device and NAN do not have a netdev, so don't go
3196 * through the netdev notifier and must be added here
3197 */
3198 mutex_init(&wdev->mtx);
3199 INIT_LIST_HEAD(&wdev->event_list);
3200 spin_lock_init(&wdev->event_lock);
3201 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3202 spin_lock_init(&wdev->mgmt_registrations_lock);
3203
3204 wdev->identifier = ++rdev->wdev_id;
3205 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3206 rdev->devlist_generation++;
3207 break;
3208 default:
3209 break;
3210 }
3211
3212 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3213 rdev, wdev, false) < 0) {
3214 nlmsg_free(msg);
3215 return -ENOBUFS;
3216 }
3217
3218 /*
3219 * For wdevs which have no associated netdev object (e.g. of type
3220 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3221 * For all other types, the event will be generated from the
3222 * netdev notifier
3223 */
3224 if (!wdev->netdev)
3225 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3226
3227 return genlmsg_reply(msg, info);
3228 }
3229
3230 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3233 struct wireless_dev *wdev = info->user_ptr[1];
3234
3235 if (!rdev->ops->del_virtual_intf)
3236 return -EOPNOTSUPP;
3237
3238 /*
3239 * If we remove a wireless device without a netdev then clear
3240 * user_ptr[1] so that nl80211_post_doit won't dereference it
3241 * to check if it needs to do dev_put(). Otherwise it crashes
3242 * since the wdev has been freed, unlike with a netdev where
3243 * we need the dev_put() for the netdev to really be freed.
3244 */
3245 if (!wdev->netdev)
3246 info->user_ptr[1] = NULL;
3247
3248 return rdev_del_virtual_intf(rdev, wdev);
3249 }
3250
3251 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3252 {
3253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254 struct net_device *dev = info->user_ptr[1];
3255 u16 noack_map;
3256
3257 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3258 return -EINVAL;
3259
3260 if (!rdev->ops->set_noack_map)
3261 return -EOPNOTSUPP;
3262
3263 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3264
3265 return rdev_set_noack_map(rdev, dev, noack_map);
3266 }
3267
3268 struct get_key_cookie {
3269 struct sk_buff *msg;
3270 int error;
3271 int idx;
3272 };
3273
3274 static void get_key_callback(void *c, struct key_params *params)
3275 {
3276 struct nlattr *key;
3277 struct get_key_cookie *cookie = c;
3278
3279 if ((params->key &&
3280 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3281 params->key_len, params->key)) ||
3282 (params->seq &&
3283 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3284 params->seq_len, params->seq)) ||
3285 (params->cipher &&
3286 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3287 params->cipher)))
3288 goto nla_put_failure;
3289
3290 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3291 if (!key)
3292 goto nla_put_failure;
3293
3294 if ((params->key &&
3295 nla_put(cookie->msg, NL80211_KEY_DATA,
3296 params->key_len, params->key)) ||
3297 (params->seq &&
3298 nla_put(cookie->msg, NL80211_KEY_SEQ,
3299 params->seq_len, params->seq)) ||
3300 (params->cipher &&
3301 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3302 params->cipher)))
3303 goto nla_put_failure;
3304
3305 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3306 goto nla_put_failure;
3307
3308 nla_nest_end(cookie->msg, key);
3309
3310 return;
3311 nla_put_failure:
3312 cookie->error = 1;
3313 }
3314
3315 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3316 {
3317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318 int err;
3319 struct net_device *dev = info->user_ptr[1];
3320 u8 key_idx = 0;
3321 const u8 *mac_addr = NULL;
3322 bool pairwise;
3323 struct get_key_cookie cookie = {
3324 .error = 0,
3325 };
3326 void *hdr;
3327 struct sk_buff *msg;
3328
3329 if (info->attrs[NL80211_ATTR_KEY_IDX])
3330 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3331
3332 if (key_idx > 5)
3333 return -EINVAL;
3334
3335 if (info->attrs[NL80211_ATTR_MAC])
3336 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3337
3338 pairwise = !!mac_addr;
3339 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3340 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3341
3342 if (kt >= NUM_NL80211_KEYTYPES)
3343 return -EINVAL;
3344 if (kt != NL80211_KEYTYPE_GROUP &&
3345 kt != NL80211_KEYTYPE_PAIRWISE)
3346 return -EINVAL;
3347 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3348 }
3349
3350 if (!rdev->ops->get_key)
3351 return -EOPNOTSUPP;
3352
3353 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3354 return -ENOENT;
3355
3356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3357 if (!msg)
3358 return -ENOMEM;
3359
3360 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3361 NL80211_CMD_NEW_KEY);
3362 if (!hdr)
3363 goto nla_put_failure;
3364
3365 cookie.msg = msg;
3366 cookie.idx = key_idx;
3367
3368 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3369 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3370 goto nla_put_failure;
3371 if (mac_addr &&
3372 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3373 goto nla_put_failure;
3374
3375 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3376 get_key_callback);
3377
3378 if (err)
3379 goto free_msg;
3380
3381 if (cookie.error)
3382 goto nla_put_failure;
3383
3384 genlmsg_end(msg, hdr);
3385 return genlmsg_reply(msg, info);
3386
3387 nla_put_failure:
3388 err = -ENOBUFS;
3389 free_msg:
3390 nlmsg_free(msg);
3391 return err;
3392 }
3393
3394 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3395 {
3396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397 struct key_parse key;
3398 int err;
3399 struct net_device *dev = info->user_ptr[1];
3400
3401 err = nl80211_parse_key(info, &key);
3402 if (err)
3403 return err;
3404
3405 if (key.idx < 0)
3406 return -EINVAL;
3407
3408 /* only support setting default key */
3409 if (!key.def && !key.defmgmt)
3410 return -EINVAL;
3411
3412 wdev_lock(dev->ieee80211_ptr);
3413
3414 if (key.def) {
3415 if (!rdev->ops->set_default_key) {
3416 err = -EOPNOTSUPP;
3417 goto out;
3418 }
3419
3420 err = nl80211_key_allowed(dev->ieee80211_ptr);
3421 if (err)
3422 goto out;
3423
3424 err = rdev_set_default_key(rdev, dev, key.idx,
3425 key.def_uni, key.def_multi);
3426
3427 if (err)
3428 goto out;
3429
3430 #ifdef CONFIG_CFG80211_WEXT
3431 dev->ieee80211_ptr->wext.default_key = key.idx;
3432 #endif
3433 } else {
3434 if (key.def_uni || !key.def_multi) {
3435 err = -EINVAL;
3436 goto out;
3437 }
3438
3439 if (!rdev->ops->set_default_mgmt_key) {
3440 err = -EOPNOTSUPP;
3441 goto out;
3442 }
3443
3444 err = nl80211_key_allowed(dev->ieee80211_ptr);
3445 if (err)
3446 goto out;
3447
3448 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3449 if (err)
3450 goto out;
3451
3452 #ifdef CONFIG_CFG80211_WEXT
3453 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3454 #endif
3455 }
3456
3457 out:
3458 wdev_unlock(dev->ieee80211_ptr);
3459
3460 return err;
3461 }
3462
3463 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3464 {
3465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466 int err;
3467 struct net_device *dev = info->user_ptr[1];
3468 struct key_parse key;
3469 const u8 *mac_addr = NULL;
3470
3471 err = nl80211_parse_key(info, &key);
3472 if (err)
3473 return err;
3474
3475 if (!key.p.key)
3476 return -EINVAL;
3477
3478 if (info->attrs[NL80211_ATTR_MAC])
3479 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3480
3481 if (key.type == -1) {
3482 if (mac_addr)
3483 key.type = NL80211_KEYTYPE_PAIRWISE;
3484 else
3485 key.type = NL80211_KEYTYPE_GROUP;
3486 }
3487
3488 /* for now */
3489 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3490 key.type != NL80211_KEYTYPE_GROUP)
3491 return -EINVAL;
3492
3493 if (!rdev->ops->add_key)
3494 return -EOPNOTSUPP;
3495
3496 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3497 key.type == NL80211_KEYTYPE_PAIRWISE,
3498 mac_addr))
3499 return -EINVAL;
3500
3501 wdev_lock(dev->ieee80211_ptr);
3502 err = nl80211_key_allowed(dev->ieee80211_ptr);
3503 if (!err)
3504 err = rdev_add_key(rdev, dev, key.idx,
3505 key.type == NL80211_KEYTYPE_PAIRWISE,
3506 mac_addr, &key.p);
3507 wdev_unlock(dev->ieee80211_ptr);
3508
3509 return err;
3510 }
3511
3512 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3513 {
3514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3515 int err;
3516 struct net_device *dev = info->user_ptr[1];
3517 u8 *mac_addr = NULL;
3518 struct key_parse key;
3519
3520 err = nl80211_parse_key(info, &key);
3521 if (err)
3522 return err;
3523
3524 if (info->attrs[NL80211_ATTR_MAC])
3525 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3526
3527 if (key.type == -1) {
3528 if (mac_addr)
3529 key.type = NL80211_KEYTYPE_PAIRWISE;
3530 else
3531 key.type = NL80211_KEYTYPE_GROUP;
3532 }
3533
3534 /* for now */
3535 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3536 key.type != NL80211_KEYTYPE_GROUP)
3537 return -EINVAL;
3538
3539 if (!rdev->ops->del_key)
3540 return -EOPNOTSUPP;
3541
3542 wdev_lock(dev->ieee80211_ptr);
3543 err = nl80211_key_allowed(dev->ieee80211_ptr);
3544
3545 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3546 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3547 err = -ENOENT;
3548
3549 if (!err)
3550 err = rdev_del_key(rdev, dev, key.idx,
3551 key.type == NL80211_KEYTYPE_PAIRWISE,
3552 mac_addr);
3553
3554 #ifdef CONFIG_CFG80211_WEXT
3555 if (!err) {
3556 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3557 dev->ieee80211_ptr->wext.default_key = -1;
3558 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3559 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3560 }
3561 #endif
3562 wdev_unlock(dev->ieee80211_ptr);
3563
3564 return err;
3565 }
3566
3567 /* This function returns an error or the number of nested attributes */
3568 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3569 {
3570 struct nlattr *attr;
3571 int n_entries = 0, tmp;
3572
3573 nla_for_each_nested(attr, nl_attr, tmp) {
3574 if (nla_len(attr) != ETH_ALEN)
3575 return -EINVAL;
3576
3577 n_entries++;
3578 }
3579
3580 return n_entries;
3581 }
3582
3583 /*
3584 * This function parses ACL information and allocates memory for ACL data.
3585 * On successful return, the calling function is responsible to free the
3586 * ACL buffer returned by this function.
3587 */
3588 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3589 struct genl_info *info)
3590 {
3591 enum nl80211_acl_policy acl_policy;
3592 struct nlattr *attr;
3593 struct cfg80211_acl_data *acl;
3594 int i = 0, n_entries, tmp;
3595
3596 if (!wiphy->max_acl_mac_addrs)
3597 return ERR_PTR(-EOPNOTSUPP);
3598
3599 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3600 return ERR_PTR(-EINVAL);
3601
3602 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3603 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3604 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3605 return ERR_PTR(-EINVAL);
3606
3607 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3608 return ERR_PTR(-EINVAL);
3609
3610 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3611 if (n_entries < 0)
3612 return ERR_PTR(n_entries);
3613
3614 if (n_entries > wiphy->max_acl_mac_addrs)
3615 return ERR_PTR(-ENOTSUPP);
3616
3617 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3618 GFP_KERNEL);
3619 if (!acl)
3620 return ERR_PTR(-ENOMEM);
3621
3622 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3623 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3624 i++;
3625 }
3626
3627 acl->n_acl_entries = n_entries;
3628 acl->acl_policy = acl_policy;
3629
3630 return acl;
3631 }
3632
3633 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3634 {
3635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636 struct net_device *dev = info->user_ptr[1];
3637 struct cfg80211_acl_data *acl;
3638 int err;
3639
3640 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3641 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3642 return -EOPNOTSUPP;
3643
3644 if (!dev->ieee80211_ptr->beacon_interval)
3645 return -EINVAL;
3646
3647 acl = parse_acl_data(&rdev->wiphy, info);
3648 if (IS_ERR(acl))
3649 return PTR_ERR(acl);
3650
3651 err = rdev_set_mac_acl(rdev, dev, acl);
3652
3653 kfree(acl);
3654
3655 return err;
3656 }
3657
3658 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3659 u8 *rates, u8 rates_len)
3660 {
3661 u8 i;
3662 u32 mask = 0;
3663
3664 for (i = 0; i < rates_len; i++) {
3665 int rate = (rates[i] & 0x7f) * 5;
3666 int ridx;
3667
3668 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3669 struct ieee80211_rate *srate =
3670 &sband->bitrates[ridx];
3671 if (rate == srate->bitrate) {
3672 mask |= 1 << ridx;
3673 break;
3674 }
3675 }
3676 if (ridx == sband->n_bitrates)
3677 return 0; /* rate not found */
3678 }
3679
3680 return mask;
3681 }
3682
3683 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3684 u8 *rates, u8 rates_len,
3685 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3686 {
3687 u8 i;
3688
3689 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3690
3691 for (i = 0; i < rates_len; i++) {
3692 int ridx, rbit;
3693
3694 ridx = rates[i] / 8;
3695 rbit = BIT(rates[i] % 8);
3696
3697 /* check validity */
3698 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3699 return false;
3700
3701 /* check availability */
3702 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3703 mcs[ridx] |= rbit;
3704 else
3705 return false;
3706 }
3707
3708 return true;
3709 }
3710
3711 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3712 {
3713 u16 mcs_mask = 0;
3714
3715 switch (vht_mcs_map) {
3716 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3717 break;
3718 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3719 mcs_mask = 0x00FF;
3720 break;
3721 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3722 mcs_mask = 0x01FF;
3723 break;
3724 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3725 mcs_mask = 0x03FF;
3726 break;
3727 default:
3728 break;
3729 }
3730
3731 return mcs_mask;
3732 }
3733
3734 static void vht_build_mcs_mask(u16 vht_mcs_map,
3735 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3736 {
3737 u8 nss;
3738
3739 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3740 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3741 vht_mcs_map >>= 2;
3742 }
3743 }
3744
3745 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3746 struct nl80211_txrate_vht *txrate,
3747 u16 mcs[NL80211_VHT_NSS_MAX])
3748 {
3749 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3750 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3751 u8 i;
3752
3753 if (!sband->vht_cap.vht_supported)
3754 return false;
3755
3756 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3757
3758 /* Build vht_mcs_mask from VHT capabilities */
3759 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3760
3761 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3762 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3763 mcs[i] = txrate->mcs[i];
3764 else
3765 return false;
3766 }
3767
3768 return true;
3769 }
3770
3771 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3772 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3773 .len = NL80211_MAX_SUPP_RATES },
3774 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3775 .len = NL80211_MAX_SUPP_HT_RATES },
3776 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3777 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3778 };
3779
3780 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3781 struct cfg80211_bitrate_mask *mask)
3782 {
3783 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785 int rem, i;
3786 struct nlattr *tx_rates;
3787 struct ieee80211_supported_band *sband;
3788 u16 vht_tx_mcs_map;
3789
3790 memset(mask, 0, sizeof(*mask));
3791 /* Default to all rates enabled */
3792 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3793 sband = rdev->wiphy.bands[i];
3794
3795 if (!sband)
3796 continue;
3797
3798 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3799 memcpy(mask->control[i].ht_mcs,
3800 sband->ht_cap.mcs.rx_mask,
3801 sizeof(mask->control[i].ht_mcs));
3802
3803 if (!sband->vht_cap.vht_supported)
3804 continue;
3805
3806 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3807 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3808 }
3809
3810 /* if no rates are given set it back to the defaults */
3811 if (!info->attrs[NL80211_ATTR_TX_RATES])
3812 goto out;
3813
3814 /* The nested attribute uses enum nl80211_band as the index. This maps
3815 * directly to the enum nl80211_band values used in cfg80211.
3816 */
3817 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3818 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3819 enum nl80211_band band = nla_type(tx_rates);
3820 int err;
3821
3822 if (band < 0 || band >= NUM_NL80211_BANDS)
3823 return -EINVAL;
3824 sband = rdev->wiphy.bands[band];
3825 if (sband == NULL)
3826 return -EINVAL;
3827 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3828 nl80211_txattr_policy, info->extack);
3829 if (err)
3830 return err;
3831 if (tb[NL80211_TXRATE_LEGACY]) {
3832 mask->control[band].legacy = rateset_to_mask(
3833 sband,
3834 nla_data(tb[NL80211_TXRATE_LEGACY]),
3835 nla_len(tb[NL80211_TXRATE_LEGACY]));
3836 if ((mask->control[band].legacy == 0) &&
3837 nla_len(tb[NL80211_TXRATE_LEGACY]))
3838 return -EINVAL;
3839 }
3840 if (tb[NL80211_TXRATE_HT]) {
3841 if (!ht_rateset_to_mask(
3842 sband,
3843 nla_data(tb[NL80211_TXRATE_HT]),
3844 nla_len(tb[NL80211_TXRATE_HT]),
3845 mask->control[band].ht_mcs))
3846 return -EINVAL;
3847 }
3848 if (tb[NL80211_TXRATE_VHT]) {
3849 if (!vht_set_mcs_mask(
3850 sband,
3851 nla_data(tb[NL80211_TXRATE_VHT]),
3852 mask->control[band].vht_mcs))
3853 return -EINVAL;
3854 }
3855 if (tb[NL80211_TXRATE_GI]) {
3856 mask->control[band].gi =
3857 nla_get_u8(tb[NL80211_TXRATE_GI]);
3858 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3859 return -EINVAL;
3860 }
3861
3862 if (mask->control[band].legacy == 0) {
3863 /* don't allow empty legacy rates if HT or VHT
3864 * are not even supported.
3865 */
3866 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3867 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3868 return -EINVAL;
3869
3870 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3871 if (mask->control[band].ht_mcs[i])
3872 goto out;
3873
3874 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3875 if (mask->control[band].vht_mcs[i])
3876 goto out;
3877
3878 /* legacy and mcs rates may not be both empty */
3879 return -EINVAL;
3880 }
3881 }
3882
3883 out:
3884 return 0;
3885 }
3886
3887 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3888 enum nl80211_band band,
3889 struct cfg80211_bitrate_mask *beacon_rate)
3890 {
3891 u32 count_ht, count_vht, i;
3892 u32 rate = beacon_rate->control[band].legacy;
3893
3894 /* Allow only one rate */
3895 if (hweight32(rate) > 1)
3896 return -EINVAL;
3897
3898 count_ht = 0;
3899 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3900 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3901 return -EINVAL;
3902 } else if (beacon_rate->control[band].ht_mcs[i]) {
3903 count_ht++;
3904 if (count_ht > 1)
3905 return -EINVAL;
3906 }
3907 if (count_ht && rate)
3908 return -EINVAL;
3909 }
3910
3911 count_vht = 0;
3912 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3913 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3914 return -EINVAL;
3915 } else if (beacon_rate->control[band].vht_mcs[i]) {
3916 count_vht++;
3917 if (count_vht > 1)
3918 return -EINVAL;
3919 }
3920 if (count_vht && rate)
3921 return -EINVAL;
3922 }
3923
3924 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3925 return -EINVAL;
3926
3927 if (rate &&
3928 !wiphy_ext_feature_isset(&rdev->wiphy,
3929 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3930 return -EINVAL;
3931 if (count_ht &&
3932 !wiphy_ext_feature_isset(&rdev->wiphy,
3933 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3934 return -EINVAL;
3935 if (count_vht &&
3936 !wiphy_ext_feature_isset(&rdev->wiphy,
3937 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3938 return -EINVAL;
3939
3940 return 0;
3941 }
3942
3943 static int nl80211_parse_beacon(struct nlattr *attrs[],
3944 struct cfg80211_beacon_data *bcn)
3945 {
3946 bool haveinfo = false;
3947
3948 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3949 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3950 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3951 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3952 return -EINVAL;
3953
3954 memset(bcn, 0, sizeof(*bcn));
3955
3956 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3957 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3958 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3959 if (!bcn->head_len)
3960 return -EINVAL;
3961 haveinfo = true;
3962 }
3963
3964 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3965 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3966 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3967 haveinfo = true;
3968 }
3969
3970 if (!haveinfo)
3971 return -EINVAL;
3972
3973 if (attrs[NL80211_ATTR_IE]) {
3974 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3975 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3976 }
3977
3978 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3979 bcn->proberesp_ies =
3980 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3981 bcn->proberesp_ies_len =
3982 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3983 }
3984
3985 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3986 bcn->assocresp_ies =
3987 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3988 bcn->assocresp_ies_len =
3989 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3990 }
3991
3992 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3993 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3994 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3995 }
3996
3997 return 0;
3998 }
3999
4000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4001 const u8 *rates)
4002 {
4003 int i;
4004
4005 if (!rates)
4006 return;
4007
4008 for (i = 0; i < rates[1]; i++) {
4009 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4010 params->ht_required = true;
4011 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4012 params->vht_required = true;
4013 }
4014 }
4015
4016 /*
4017 * Since the nl80211 API didn't include, from the beginning, attributes about
4018 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4019 * benefit of drivers that rebuild IEs in the firmware.
4020 */
4021 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4022 {
4023 const struct cfg80211_beacon_data *bcn = &params->beacon;
4024 size_t ies_len = bcn->tail_len;
4025 const u8 *ies = bcn->tail;
4026 const u8 *rates;
4027 const u8 *cap;
4028
4029 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4030 nl80211_check_ap_rate_selectors(params, rates);
4031
4032 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4033 nl80211_check_ap_rate_selectors(params, rates);
4034
4035 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4036 if (cap && cap[1] >= sizeof(*params->ht_cap))
4037 params->ht_cap = (void *)(cap + 2);
4038 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4039 if (cap && cap[1] >= sizeof(*params->vht_cap))
4040 params->vht_cap = (void *)(cap + 2);
4041 }
4042
4043 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4044 struct cfg80211_ap_settings *params)
4045 {
4046 struct wireless_dev *wdev;
4047 bool ret = false;
4048
4049 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4050 if (wdev->iftype != NL80211_IFTYPE_AP &&
4051 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4052 continue;
4053
4054 if (!wdev->preset_chandef.chan)
4055 continue;
4056
4057 params->chandef = wdev->preset_chandef;
4058 ret = true;
4059 break;
4060 }
4061
4062 return ret;
4063 }
4064
4065 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4066 enum nl80211_auth_type auth_type,
4067 enum nl80211_commands cmd)
4068 {
4069 if (auth_type > NL80211_AUTHTYPE_MAX)
4070 return false;
4071
4072 switch (cmd) {
4073 case NL80211_CMD_AUTHENTICATE:
4074 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4075 auth_type == NL80211_AUTHTYPE_SAE)
4076 return false;
4077 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4078 NL80211_EXT_FEATURE_FILS_STA) &&
4079 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4080 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4081 auth_type == NL80211_AUTHTYPE_FILS_PK))
4082 return false;
4083 return true;
4084 case NL80211_CMD_CONNECT:
4085 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4086 auth_type == NL80211_AUTHTYPE_SAE)
4087 return false;
4088
4089 /* FILS with SK PFS or PK not supported yet */
4090 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4091 auth_type == NL80211_AUTHTYPE_FILS_PK)
4092 return false;
4093 if (!wiphy_ext_feature_isset(
4094 &rdev->wiphy,
4095 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4096 auth_type == NL80211_AUTHTYPE_FILS_SK)
4097 return false;
4098 return true;
4099 case NL80211_CMD_START_AP:
4100 /* SAE not supported yet */
4101 if (auth_type == NL80211_AUTHTYPE_SAE)
4102 return false;
4103 /* FILS not supported yet */
4104 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4105 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4106 auth_type == NL80211_AUTHTYPE_FILS_PK)
4107 return false;
4108 return true;
4109 default:
4110 return false;
4111 }
4112 }
4113
4114 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4115 {
4116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117 struct net_device *dev = info->user_ptr[1];
4118 struct wireless_dev *wdev = dev->ieee80211_ptr;
4119 struct cfg80211_ap_settings params;
4120 int err;
4121
4122 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4123 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124 return -EOPNOTSUPP;
4125
4126 if (!rdev->ops->start_ap)
4127 return -EOPNOTSUPP;
4128
4129 if (wdev->beacon_interval)
4130 return -EALREADY;
4131
4132 memset(&params, 0, sizeof(params));
4133
4134 /* these are required for START_AP */
4135 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4136 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4137 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4138 return -EINVAL;
4139
4140 err = nl80211_parse_beacon(info->attrs, &params.beacon);
4141 if (err)
4142 return err;
4143
4144 params.beacon_interval =
4145 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4146 params.dtim_period =
4147 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4148
4149 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4150 params.beacon_interval);
4151 if (err)
4152 return err;
4153
4154 /*
4155 * In theory, some of these attributes should be required here
4156 * but since they were not used when the command was originally
4157 * added, keep them optional for old user space programs to let
4158 * them continue to work with drivers that do not need the
4159 * additional information -- drivers must check!
4160 */
4161 if (info->attrs[NL80211_ATTR_SSID]) {
4162 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4163 params.ssid_len =
4164 nla_len(info->attrs[NL80211_ATTR_SSID]);
4165 if (params.ssid_len == 0 ||
4166 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4167 return -EINVAL;
4168 }
4169
4170 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4171 params.hidden_ssid = nla_get_u32(
4172 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4173 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4174 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4175 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4176 return -EINVAL;
4177 }
4178
4179 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4180
4181 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4182 params.auth_type = nla_get_u32(
4183 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4184 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4185 NL80211_CMD_START_AP))
4186 return -EINVAL;
4187 } else
4188 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4189
4190 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4191 NL80211_MAX_NR_CIPHER_SUITES);
4192 if (err)
4193 return err;
4194
4195 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4196 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4197 return -EOPNOTSUPP;
4198 params.inactivity_timeout = nla_get_u16(
4199 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4200 }
4201
4202 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4203 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4204 return -EINVAL;
4205 params.p2p_ctwindow =
4206 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4207 if (params.p2p_ctwindow > 127)
4208 return -EINVAL;
4209 if (params.p2p_ctwindow != 0 &&
4210 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4211 return -EINVAL;
4212 }
4213
4214 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4215 u8 tmp;
4216
4217 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4218 return -EINVAL;
4219 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4220 if (tmp > 1)
4221 return -EINVAL;
4222 params.p2p_opp_ps = tmp;
4223 if (params.p2p_opp_ps != 0 &&
4224 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4225 return -EINVAL;
4226 }
4227
4228 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4229 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4230 if (err)
4231 return err;
4232 } else if (wdev->preset_chandef.chan) {
4233 params.chandef = wdev->preset_chandef;
4234 } else if (!nl80211_get_ap_channel(rdev, &params))
4235 return -EINVAL;
4236
4237 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4238 wdev->iftype))
4239 return -EINVAL;
4240
4241 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4242 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4243 if (err)
4244 return err;
4245
4246 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4247 &params.beacon_rate);
4248 if (err)
4249 return err;
4250 }
4251
4252 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4253 params.smps_mode =
4254 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4255 switch (params.smps_mode) {
4256 case NL80211_SMPS_OFF:
4257 break;
4258 case NL80211_SMPS_STATIC:
4259 if (!(rdev->wiphy.features &
4260 NL80211_FEATURE_STATIC_SMPS))
4261 return -EINVAL;
4262 break;
4263 case NL80211_SMPS_DYNAMIC:
4264 if (!(rdev->wiphy.features &
4265 NL80211_FEATURE_DYNAMIC_SMPS))
4266 return -EINVAL;
4267 break;
4268 default:
4269 return -EINVAL;
4270 }
4271 } else {
4272 params.smps_mode = NL80211_SMPS_OFF;
4273 }
4274
4275 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4276 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4277 return -EOPNOTSUPP;
4278
4279 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4280 params.acl = parse_acl_data(&rdev->wiphy, info);
4281 if (IS_ERR(params.acl))
4282 return PTR_ERR(params.acl);
4283 }
4284
4285 nl80211_calculate_ap_params(&params);
4286
4287 wdev_lock(wdev);
4288 err = rdev_start_ap(rdev, dev, &params);
4289 if (!err) {
4290 wdev->preset_chandef = params.chandef;
4291 wdev->beacon_interval = params.beacon_interval;
4292 wdev->chandef = params.chandef;
4293 wdev->ssid_len = params.ssid_len;
4294 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4295
4296 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297 wdev->conn_owner_nlportid = info->snd_portid;
4298 }
4299 wdev_unlock(wdev);
4300
4301 kfree(params.acl);
4302
4303 return err;
4304 }
4305
4306 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4307 {
4308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309 struct net_device *dev = info->user_ptr[1];
4310 struct wireless_dev *wdev = dev->ieee80211_ptr;
4311 struct cfg80211_beacon_data params;
4312 int err;
4313
4314 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4316 return -EOPNOTSUPP;
4317
4318 if (!rdev->ops->change_beacon)
4319 return -EOPNOTSUPP;
4320
4321 if (!wdev->beacon_interval)
4322 return -EINVAL;
4323
4324 err = nl80211_parse_beacon(info->attrs, &params);
4325 if (err)
4326 return err;
4327
4328 wdev_lock(wdev);
4329 err = rdev_change_beacon(rdev, dev, &params);
4330 wdev_unlock(wdev);
4331
4332 return err;
4333 }
4334
4335 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4336 {
4337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338 struct net_device *dev = info->user_ptr[1];
4339
4340 return cfg80211_stop_ap(rdev, dev, false);
4341 }
4342
4343 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4344 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4345 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4346 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4347 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4348 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4349 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4350 };
4351
4352 static int parse_station_flags(struct genl_info *info,
4353 enum nl80211_iftype iftype,
4354 struct station_parameters *params)
4355 {
4356 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4357 struct nlattr *nla;
4358 int flag;
4359
4360 /*
4361 * Try parsing the new attribute first so userspace
4362 * can specify both for older kernels.
4363 */
4364 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4365 if (nla) {
4366 struct nl80211_sta_flag_update *sta_flags;
4367
4368 sta_flags = nla_data(nla);
4369 params->sta_flags_mask = sta_flags->mask;
4370 params->sta_flags_set = sta_flags->set;
4371 params->sta_flags_set &= params->sta_flags_mask;
4372 if ((params->sta_flags_mask |
4373 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4374 return -EINVAL;
4375 return 0;
4376 }
4377
4378 /* if present, parse the old attribute */
4379
4380 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4381 if (!nla)
4382 return 0;
4383
4384 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4385 sta_flags_policy, info->extack))
4386 return -EINVAL;
4387
4388 /*
4389 * Only allow certain flags for interface types so that
4390 * other attributes are silently ignored. Remember that
4391 * this is backward compatibility code with old userspace
4392 * and shouldn't be hit in other cases anyway.
4393 */
4394 switch (iftype) {
4395 case NL80211_IFTYPE_AP:
4396 case NL80211_IFTYPE_AP_VLAN:
4397 case NL80211_IFTYPE_P2P_GO:
4398 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4399 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4400 BIT(NL80211_STA_FLAG_WME) |
4401 BIT(NL80211_STA_FLAG_MFP);
4402 break;
4403 case NL80211_IFTYPE_P2P_CLIENT:
4404 case NL80211_IFTYPE_STATION:
4405 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4406 BIT(NL80211_STA_FLAG_TDLS_PEER);
4407 break;
4408 case NL80211_IFTYPE_MESH_POINT:
4409 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4410 BIT(NL80211_STA_FLAG_MFP) |
4411 BIT(NL80211_STA_FLAG_AUTHORIZED);
4412 break;
4413 default:
4414 return -EINVAL;
4415 }
4416
4417 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4418 if (flags[flag]) {
4419 params->sta_flags_set |= (1<<flag);
4420
4421 /* no longer support new API additions in old API */
4422 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4423 return -EINVAL;
4424 }
4425 }
4426
4427 return 0;
4428 }
4429
4430 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4431 int attr)
4432 {
4433 struct nlattr *rate;
4434 u32 bitrate;
4435 u16 bitrate_compat;
4436 enum nl80211_rate_info rate_flg;
4437
4438 rate = nla_nest_start(msg, attr);
4439 if (!rate)
4440 return false;
4441
4442 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4443 bitrate = cfg80211_calculate_bitrate(info);
4444 /* report 16-bit bitrate only if we can */
4445 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4446 if (bitrate > 0 &&
4447 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4448 return false;
4449 if (bitrate_compat > 0 &&
4450 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4451 return false;
4452
4453 switch (info->bw) {
4454 case RATE_INFO_BW_5:
4455 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4456 break;
4457 case RATE_INFO_BW_10:
4458 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4459 break;
4460 default:
4461 WARN_ON(1);
4462 /* fall through */
4463 case RATE_INFO_BW_20:
4464 rate_flg = 0;
4465 break;
4466 case RATE_INFO_BW_40:
4467 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4468 break;
4469 case RATE_INFO_BW_80:
4470 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4471 break;
4472 case RATE_INFO_BW_160:
4473 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4474 break;
4475 }
4476
4477 if (rate_flg && nla_put_flag(msg, rate_flg))
4478 return false;
4479
4480 if (info->flags & RATE_INFO_FLAGS_MCS) {
4481 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4482 return false;
4483 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4484 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4485 return false;
4486 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4487 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4488 return false;
4489 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4490 return false;
4491 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4492 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4493 return false;
4494 }
4495
4496 nla_nest_end(msg, rate);
4497 return true;
4498 }
4499
4500 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4501 int id)
4502 {
4503 void *attr;
4504 int i = 0;
4505
4506 if (!mask)
4507 return true;
4508
4509 attr = nla_nest_start(msg, id);
4510 if (!attr)
4511 return false;
4512
4513 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4514 if (!(mask & BIT(i)))
4515 continue;
4516
4517 if (nla_put_u8(msg, i, signal[i]))
4518 return false;
4519 }
4520
4521 nla_nest_end(msg, attr);
4522
4523 return true;
4524 }
4525
4526 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4527 u32 seq, int flags,
4528 struct cfg80211_registered_device *rdev,
4529 struct net_device *dev,
4530 const u8 *mac_addr, struct station_info *sinfo)
4531 {
4532 void *hdr;
4533 struct nlattr *sinfoattr, *bss_param;
4534
4535 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4536 if (!hdr)
4537 return -1;
4538
4539 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4540 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4541 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4542 goto nla_put_failure;
4543
4544 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4545 if (!sinfoattr)
4546 goto nla_put_failure;
4547
4548 #define PUT_SINFO(attr, memb, type) do { \
4549 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4550 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4551 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4552 sinfo->memb)) \
4553 goto nla_put_failure; \
4554 } while (0)
4555 #define PUT_SINFO_U64(attr, memb) do { \
4556 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4557 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4558 sinfo->memb, NL80211_STA_INFO_PAD)) \
4559 goto nla_put_failure; \
4560 } while (0)
4561
4562 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4563 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4564
4565 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4566 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4567 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4568 (u32)sinfo->rx_bytes))
4569 goto nla_put_failure;
4570
4571 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4572 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4573 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4574 (u32)sinfo->tx_bytes))
4575 goto nla_put_failure;
4576
4577 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4578 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4579 PUT_SINFO(LLID, llid, u16);
4580 PUT_SINFO(PLID, plid, u16);
4581 PUT_SINFO(PLINK_STATE, plink_state, u8);
4582 PUT_SINFO_U64(RX_DURATION, rx_duration);
4583
4584 switch (rdev->wiphy.signal_type) {
4585 case CFG80211_SIGNAL_TYPE_MBM:
4586 PUT_SINFO(SIGNAL, signal, u8);
4587 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4588 break;
4589 default:
4590 break;
4591 }
4592 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4593 if (!nl80211_put_signal(msg, sinfo->chains,
4594 sinfo->chain_signal,
4595 NL80211_STA_INFO_CHAIN_SIGNAL))
4596 goto nla_put_failure;
4597 }
4598 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4599 if (!nl80211_put_signal(msg, sinfo->chains,
4600 sinfo->chain_signal_avg,
4601 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4602 goto nla_put_failure;
4603 }
4604 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4605 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4606 NL80211_STA_INFO_TX_BITRATE))
4607 goto nla_put_failure;
4608 }
4609 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4610 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4611 NL80211_STA_INFO_RX_BITRATE))
4612 goto nla_put_failure;
4613 }
4614
4615 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4616 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4617 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4618 PUT_SINFO(TX_FAILED, tx_failed, u32);
4619 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4620 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4621 PUT_SINFO(LOCAL_PM, local_pm, u32);
4622 PUT_SINFO(PEER_PM, peer_pm, u32);
4623 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4624
4625 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4626 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4627 if (!bss_param)
4628 goto nla_put_failure;
4629
4630 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4631 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4632 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4633 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4634 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4635 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4636 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4637 sinfo->bss_param.dtim_period) ||
4638 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4639 sinfo->bss_param.beacon_interval))
4640 goto nla_put_failure;
4641
4642 nla_nest_end(msg, bss_param);
4643 }
4644 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4645 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4646 sizeof(struct nl80211_sta_flag_update),
4647 &sinfo->sta_flags))
4648 goto nla_put_failure;
4649
4650 PUT_SINFO_U64(T_OFFSET, t_offset);
4651 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4652 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4653 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4654 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4655 if (wiphy_ext_feature_isset(&rdev->wiphy,
4656 NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4657 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4658
4659 #undef PUT_SINFO
4660 #undef PUT_SINFO_U64
4661
4662 if (sinfo->pertid) {
4663 struct nlattr *tidsattr;
4664 int tid;
4665
4666 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4667 if (!tidsattr)
4668 goto nla_put_failure;
4669
4670 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4671 struct cfg80211_tid_stats *tidstats;
4672 struct nlattr *tidattr;
4673
4674 tidstats = &sinfo->pertid[tid];
4675
4676 if (!tidstats->filled)
4677 continue;
4678
4679 tidattr = nla_nest_start(msg, tid + 1);
4680 if (!tidattr)
4681 goto nla_put_failure;
4682
4683 #define PUT_TIDVAL_U64(attr, memb) do { \
4684 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4685 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4686 tidstats->memb, NL80211_TID_STATS_PAD)) \
4687 goto nla_put_failure; \
4688 } while (0)
4689
4690 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4691 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4692 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4693 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4694
4695 #undef PUT_TIDVAL_U64
4696 if ((tidstats->filled &
4697 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4698 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4699 NL80211_TID_STATS_TXQ_STATS))
4700 goto nla_put_failure;
4701
4702 nla_nest_end(msg, tidattr);
4703 }
4704
4705 nla_nest_end(msg, tidsattr);
4706 }
4707
4708 nla_nest_end(msg, sinfoattr);
4709
4710 if (sinfo->assoc_req_ies_len &&
4711 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4712 sinfo->assoc_req_ies))
4713 goto nla_put_failure;
4714
4715 cfg80211_sinfo_release_content(sinfo);
4716 genlmsg_end(msg, hdr);
4717 return 0;
4718
4719 nla_put_failure:
4720 cfg80211_sinfo_release_content(sinfo);
4721 genlmsg_cancel(msg, hdr);
4722 return -EMSGSIZE;
4723 }
4724
4725 static int nl80211_dump_station(struct sk_buff *skb,
4726 struct netlink_callback *cb)
4727 {
4728 struct station_info sinfo;
4729 struct cfg80211_registered_device *rdev;
4730 struct wireless_dev *wdev;
4731 u8 mac_addr[ETH_ALEN];
4732 int sta_idx = cb->args[2];
4733 int err;
4734
4735 rtnl_lock();
4736 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4737 if (err)
4738 goto out_err;
4739
4740 if (!wdev->netdev) {
4741 err = -EINVAL;
4742 goto out_err;
4743 }
4744
4745 if (!rdev->ops->dump_station) {
4746 err = -EOPNOTSUPP;
4747 goto out_err;
4748 }
4749
4750 while (1) {
4751 memset(&sinfo, 0, sizeof(sinfo));
4752 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4753 mac_addr, &sinfo);
4754 if (err == -ENOENT)
4755 break;
4756 if (err)
4757 goto out_err;
4758
4759 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4760 NETLINK_CB(cb->skb).portid,
4761 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4762 rdev, wdev->netdev, mac_addr,
4763 &sinfo) < 0)
4764 goto out;
4765
4766 sta_idx++;
4767 }
4768
4769 out:
4770 cb->args[2] = sta_idx;
4771 err = skb->len;
4772 out_err:
4773 rtnl_unlock();
4774
4775 return err;
4776 }
4777
4778 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4779 {
4780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4781 struct net_device *dev = info->user_ptr[1];
4782 struct station_info sinfo;
4783 struct sk_buff *msg;
4784 u8 *mac_addr = NULL;
4785 int err;
4786
4787 memset(&sinfo, 0, sizeof(sinfo));
4788
4789 if (!info->attrs[NL80211_ATTR_MAC])
4790 return -EINVAL;
4791
4792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4793
4794 if (!rdev->ops->get_station)
4795 return -EOPNOTSUPP;
4796
4797 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4798 if (err)
4799 return err;
4800
4801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4802 if (!msg) {
4803 cfg80211_sinfo_release_content(&sinfo);
4804 return -ENOMEM;
4805 }
4806
4807 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4808 info->snd_portid, info->snd_seq, 0,
4809 rdev, dev, mac_addr, &sinfo) < 0) {
4810 nlmsg_free(msg);
4811 return -ENOBUFS;
4812 }
4813
4814 return genlmsg_reply(msg, info);
4815 }
4816
4817 int cfg80211_check_station_change(struct wiphy *wiphy,
4818 struct station_parameters *params,
4819 enum cfg80211_station_type statype)
4820 {
4821 if (params->listen_interval != -1 &&
4822 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4823 return -EINVAL;
4824
4825 if (params->support_p2p_ps != -1 &&
4826 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4827 return -EINVAL;
4828
4829 if (params->aid &&
4830 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4831 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4832 return -EINVAL;
4833
4834 /* When you run into this, adjust the code below for the new flag */
4835 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4836
4837 switch (statype) {
4838 case CFG80211_STA_MESH_PEER_KERNEL:
4839 case CFG80211_STA_MESH_PEER_USER:
4840 /*
4841 * No ignoring the TDLS flag here -- the userspace mesh
4842 * code doesn't have the bug of including TDLS in the
4843 * mask everywhere.
4844 */
4845 if (params->sta_flags_mask &
4846 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4847 BIT(NL80211_STA_FLAG_MFP) |
4848 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4849 return -EINVAL;
4850 break;
4851 case CFG80211_STA_TDLS_PEER_SETUP:
4852 case CFG80211_STA_TDLS_PEER_ACTIVE:
4853 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4854 return -EINVAL;
4855 /* ignore since it can't change */
4856 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4857 break;
4858 default:
4859 /* disallow mesh-specific things */
4860 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4861 return -EINVAL;
4862 if (params->local_pm)
4863 return -EINVAL;
4864 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4865 return -EINVAL;
4866 }
4867
4868 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4869 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4870 /* TDLS can't be set, ... */
4871 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4872 return -EINVAL;
4873 /*
4874 * ... but don't bother the driver with it. This works around
4875 * a hostapd/wpa_supplicant issue -- it always includes the
4876 * TLDS_PEER flag in the mask even for AP mode.
4877 */
4878 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4879 }
4880
4881 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4882 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4883 /* reject other things that can't change */
4884 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4885 return -EINVAL;
4886 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4887 return -EINVAL;
4888 if (params->supported_rates)
4889 return -EINVAL;
4890 if (params->ext_capab || params->ht_capa || params->vht_capa)
4891 return -EINVAL;
4892 }
4893
4894 if (statype != CFG80211_STA_AP_CLIENT &&
4895 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4896 if (params->vlan)
4897 return -EINVAL;
4898 }
4899
4900 switch (statype) {
4901 case CFG80211_STA_AP_MLME_CLIENT:
4902 /* Use this only for authorizing/unauthorizing a station */
4903 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4904 return -EOPNOTSUPP;
4905 break;
4906 case CFG80211_STA_AP_CLIENT:
4907 case CFG80211_STA_AP_CLIENT_UNASSOC:
4908 /* accept only the listed bits */
4909 if (params->sta_flags_mask &
4910 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4911 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4912 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4913 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4914 BIT(NL80211_STA_FLAG_WME) |
4915 BIT(NL80211_STA_FLAG_MFP)))
4916 return -EINVAL;
4917
4918 /* but authenticated/associated only if driver handles it */
4919 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4920 params->sta_flags_mask &
4921 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4922 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4923 return -EINVAL;
4924 break;
4925 case CFG80211_STA_IBSS:
4926 case CFG80211_STA_AP_STA:
4927 /* reject any changes other than AUTHORIZED */
4928 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4929 return -EINVAL;
4930 break;
4931 case CFG80211_STA_TDLS_PEER_SETUP:
4932 /* reject any changes other than AUTHORIZED or WME */
4933 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4934 BIT(NL80211_STA_FLAG_WME)))
4935 return -EINVAL;
4936 /* force (at least) rates when authorizing */
4937 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4938 !params->supported_rates)
4939 return -EINVAL;
4940 break;
4941 case CFG80211_STA_TDLS_PEER_ACTIVE:
4942 /* reject any changes */
4943 return -EINVAL;
4944 case CFG80211_STA_MESH_PEER_KERNEL:
4945 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4946 return -EINVAL;
4947 break;
4948 case CFG80211_STA_MESH_PEER_USER:
4949 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4950 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4951 return -EINVAL;
4952 break;
4953 }
4954
4955 /*
4956 * Older kernel versions ignored this attribute entirely, so don't
4957 * reject attempts to update it but mark it as unused instead so the
4958 * driver won't look at the data.
4959 */
4960 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4961 statype != CFG80211_STA_TDLS_PEER_SETUP)
4962 params->opmode_notif_used = false;
4963
4964 return 0;
4965 }
4966 EXPORT_SYMBOL(cfg80211_check_station_change);
4967
4968 /*
4969 * Get vlan interface making sure it is running and on the right wiphy.
4970 */
4971 static struct net_device *get_vlan(struct genl_info *info,
4972 struct cfg80211_registered_device *rdev)
4973 {
4974 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4975 struct net_device *v;
4976 int ret;
4977
4978 if (!vlanattr)
4979 return NULL;
4980
4981 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4982 if (!v)
4983 return ERR_PTR(-ENODEV);
4984
4985 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4986 ret = -EINVAL;
4987 goto error;
4988 }
4989
4990 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4991 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4992 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4993 ret = -EINVAL;
4994 goto error;
4995 }
4996
4997 if (!netif_running(v)) {
4998 ret = -ENETDOWN;
4999 goto error;
5000 }
5001
5002 return v;
5003 error:
5004 dev_put(v);
5005 return ERR_PTR(ret);
5006 }
5007
5008 static const struct nla_policy
5009 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5010 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5011 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5012 };
5013
5014 static int nl80211_parse_sta_wme(struct genl_info *info,
5015 struct station_parameters *params)
5016 {
5017 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5018 struct nlattr *nla;
5019 int err;
5020
5021 /* parse WME attributes if present */
5022 if (!info->attrs[NL80211_ATTR_STA_WME])
5023 return 0;
5024
5025 nla = info->attrs[NL80211_ATTR_STA_WME];
5026 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5027 nl80211_sta_wme_policy, info->extack);
5028 if (err)
5029 return err;
5030
5031 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5032 params->uapsd_queues = nla_get_u8(
5033 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5034 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5035 return -EINVAL;
5036
5037 if (tb[NL80211_STA_WME_MAX_SP])
5038 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5039
5040 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5041 return -EINVAL;
5042
5043 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5044
5045 return 0;
5046 }
5047
5048 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5049 struct station_parameters *params)
5050 {
5051 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5052 params->supported_channels =
5053 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5054 params->supported_channels_len =
5055 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5056 /*
5057 * Need to include at least one (first channel, number of
5058 * channels) tuple for each subband, and must have proper
5059 * tuples for the rest of the data as well.
5060 */
5061 if (params->supported_channels_len < 2)
5062 return -EINVAL;
5063 if (params->supported_channels_len % 2)
5064 return -EINVAL;
5065 }
5066
5067 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5068 params->supported_oper_classes =
5069 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5070 params->supported_oper_classes_len =
5071 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5072 /*
5073 * The value of the Length field of the Supported Operating
5074 * Classes element is between 2 and 253.
5075 */
5076 if (params->supported_oper_classes_len < 2 ||
5077 params->supported_oper_classes_len > 253)
5078 return -EINVAL;
5079 }
5080 return 0;
5081 }
5082
5083 static int nl80211_set_station_tdls(struct genl_info *info,
5084 struct station_parameters *params)
5085 {
5086 int err;
5087 /* Dummy STA entry gets updated once the peer capabilities are known */
5088 if (info->attrs[NL80211_ATTR_PEER_AID])
5089 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5090 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5091 params->ht_capa =
5092 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5093 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5094 params->vht_capa =
5095 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5096
5097 err = nl80211_parse_sta_channel_info(info, params);
5098 if (err)
5099 return err;
5100
5101 return nl80211_parse_sta_wme(info, params);
5102 }
5103
5104 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5105 {
5106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5107 struct net_device *dev = info->user_ptr[1];
5108 struct station_parameters params;
5109 u8 *mac_addr;
5110 int err;
5111
5112 memset(&params, 0, sizeof(params));
5113
5114 if (!rdev->ops->change_station)
5115 return -EOPNOTSUPP;
5116
5117 /*
5118 * AID and listen_interval properties can be set only for unassociated
5119 * station. Include these parameters here and will check them in
5120 * cfg80211_check_station_change().
5121 */
5122 if (info->attrs[NL80211_ATTR_STA_AID])
5123 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5124
5125 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5126 params.listen_interval =
5127 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5128 else
5129 params.listen_interval = -1;
5130
5131 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5132 u8 tmp;
5133
5134 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5135 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5136 return -EINVAL;
5137
5138 params.support_p2p_ps = tmp;
5139 } else {
5140 params.support_p2p_ps = -1;
5141 }
5142
5143 if (!info->attrs[NL80211_ATTR_MAC])
5144 return -EINVAL;
5145
5146 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5147
5148 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5149 params.supported_rates =
5150 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5151 params.supported_rates_len =
5152 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5153 }
5154
5155 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5156 params.capability =
5157 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5158 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5159 }
5160
5161 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5162 params.ext_capab =
5163 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5164 params.ext_capab_len =
5165 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5166 }
5167
5168 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5169 return -EINVAL;
5170
5171 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5172 params.plink_action =
5173 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5174 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5175 return -EINVAL;
5176 }
5177
5178 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5179 params.plink_state =
5180 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5181 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5182 return -EINVAL;
5183 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5184 params.peer_aid = nla_get_u16(
5185 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5186 if (params.peer_aid > IEEE80211_MAX_AID)
5187 return -EINVAL;
5188 }
5189 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5190 }
5191
5192 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5193 enum nl80211_mesh_power_mode pm = nla_get_u32(
5194 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5195
5196 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5197 pm > NL80211_MESH_POWER_MAX)
5198 return -EINVAL;
5199
5200 params.local_pm = pm;
5201 }
5202
5203 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5204 params.opmode_notif_used = true;
5205 params.opmode_notif =
5206 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5207 }
5208
5209 /* Include parameters for TDLS peer (will check later) */
5210 err = nl80211_set_station_tdls(info, &params);
5211 if (err)
5212 return err;
5213
5214 params.vlan = get_vlan(info, rdev);
5215 if (IS_ERR(params.vlan))
5216 return PTR_ERR(params.vlan);
5217
5218 switch (dev->ieee80211_ptr->iftype) {
5219 case NL80211_IFTYPE_AP:
5220 case NL80211_IFTYPE_AP_VLAN:
5221 case NL80211_IFTYPE_P2P_GO:
5222 case NL80211_IFTYPE_P2P_CLIENT:
5223 case NL80211_IFTYPE_STATION:
5224 case NL80211_IFTYPE_ADHOC:
5225 case NL80211_IFTYPE_MESH_POINT:
5226 break;
5227 default:
5228 err = -EOPNOTSUPP;
5229 goto out_put_vlan;
5230 }
5231
5232 /* driver will call cfg80211_check_station_change() */
5233 err = rdev_change_station(rdev, dev, mac_addr, &params);
5234
5235 out_put_vlan:
5236 if (params.vlan)
5237 dev_put(params.vlan);
5238
5239 return err;
5240 }
5241
5242 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5243 {
5244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5245 int err;
5246 struct net_device *dev = info->user_ptr[1];
5247 struct station_parameters params;
5248 u8 *mac_addr = NULL;
5249 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5250 BIT(NL80211_STA_FLAG_ASSOCIATED);
5251
5252 memset(&params, 0, sizeof(params));
5253
5254 if (!rdev->ops->add_station)
5255 return -EOPNOTSUPP;
5256
5257 if (!info->attrs[NL80211_ATTR_MAC])
5258 return -EINVAL;
5259
5260 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5261 return -EINVAL;
5262
5263 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5264 return -EINVAL;
5265
5266 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5267 !info->attrs[NL80211_ATTR_PEER_AID])
5268 return -EINVAL;
5269
5270 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5271 params.supported_rates =
5272 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5273 params.supported_rates_len =
5274 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5275 params.listen_interval =
5276 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5277
5278 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5279 u8 tmp;
5280
5281 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5282 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5283 return -EINVAL;
5284
5285 params.support_p2p_ps = tmp;
5286 } else {
5287 /*
5288 * if not specified, assume it's supported for P2P GO interface,
5289 * and is NOT supported for AP interface
5290 */
5291 params.support_p2p_ps =
5292 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5293 }
5294
5295 if (info->attrs[NL80211_ATTR_PEER_AID])
5296 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5297 else
5298 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5299 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5300 return -EINVAL;
5301
5302 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5303 params.capability =
5304 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5305 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5306 }
5307
5308 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5309 params.ext_capab =
5310 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5311 params.ext_capab_len =
5312 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5313 }
5314
5315 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5316 params.ht_capa =
5317 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5318
5319 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5320 params.vht_capa =
5321 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5322
5323 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5324 params.opmode_notif_used = true;
5325 params.opmode_notif =
5326 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5327 }
5328
5329 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5330 params.plink_action =
5331 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5332 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5333 return -EINVAL;
5334 }
5335
5336 err = nl80211_parse_sta_channel_info(info, &params);
5337 if (err)
5338 return err;
5339
5340 err = nl80211_parse_sta_wme(info, &params);
5341 if (err)
5342 return err;
5343
5344 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5345 return -EINVAL;
5346
5347 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5348 * as userspace might just pass through the capabilities from the IEs
5349 * directly, rather than enforcing this restriction and returning an
5350 * error in this case.
5351 */
5352 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5353 params.ht_capa = NULL;
5354 params.vht_capa = NULL;
5355 }
5356
5357 /* When you run into this, adjust the code below for the new flag */
5358 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5359
5360 switch (dev->ieee80211_ptr->iftype) {
5361 case NL80211_IFTYPE_AP:
5362 case NL80211_IFTYPE_AP_VLAN:
5363 case NL80211_IFTYPE_P2P_GO:
5364 /* ignore WME attributes if iface/sta is not capable */
5365 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5366 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5367 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5368
5369 /* TDLS peers cannot be added */
5370 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5371 info->attrs[NL80211_ATTR_PEER_AID])
5372 return -EINVAL;
5373 /* but don't bother the driver with it */
5374 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5375
5376 /* allow authenticated/associated only if driver handles it */
5377 if (!(rdev->wiphy.features &
5378 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5379 params.sta_flags_mask & auth_assoc)
5380 return -EINVAL;
5381
5382 /* Older userspace, or userspace wanting to be compatible with
5383 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5384 * and assoc flags in the mask, but assumes the station will be
5385 * added as associated anyway since this was the required driver
5386 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5387 * introduced.
5388 * In order to not bother drivers with this quirk in the API
5389 * set the flags in both the mask and set for new stations in
5390 * this case.
5391 */
5392 if (!(params.sta_flags_mask & auth_assoc)) {
5393 params.sta_flags_mask |= auth_assoc;
5394 params.sta_flags_set |= auth_assoc;
5395 }
5396
5397 /* must be last in here for error handling */
5398 params.vlan = get_vlan(info, rdev);
5399 if (IS_ERR(params.vlan))
5400 return PTR_ERR(params.vlan);
5401 break;
5402 case NL80211_IFTYPE_MESH_POINT:
5403 /* ignore uAPSD data */
5404 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5405
5406 /* associated is disallowed */
5407 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5408 return -EINVAL;
5409 /* TDLS peers cannot be added */
5410 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5411 info->attrs[NL80211_ATTR_PEER_AID])
5412 return -EINVAL;
5413 break;
5414 case NL80211_IFTYPE_STATION:
5415 case NL80211_IFTYPE_P2P_CLIENT:
5416 /* ignore uAPSD data */
5417 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5418
5419 /* these are disallowed */
5420 if (params.sta_flags_mask &
5421 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5422 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5423 return -EINVAL;
5424 /* Only TDLS peers can be added */
5425 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5426 return -EINVAL;
5427 /* Can only add if TDLS ... */
5428 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5429 return -EOPNOTSUPP;
5430 /* ... with external setup is supported */
5431 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5432 return -EOPNOTSUPP;
5433 /*
5434 * Older wpa_supplicant versions always mark the TDLS peer
5435 * as authorized, but it shouldn't yet be.
5436 */
5437 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5438 break;
5439 default:
5440 return -EOPNOTSUPP;
5441 }
5442
5443 /* be aware of params.vlan when changing code here */
5444
5445 err = rdev_add_station(rdev, dev, mac_addr, &params);
5446
5447 if (params.vlan)
5448 dev_put(params.vlan);
5449 return err;
5450 }
5451
5452 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5453 {
5454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5455 struct net_device *dev = info->user_ptr[1];
5456 struct station_del_parameters params;
5457
5458 memset(&params, 0, sizeof(params));
5459
5460 if (info->attrs[NL80211_ATTR_MAC])
5461 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5462
5463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5465 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5466 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5467 return -EINVAL;
5468
5469 if (!rdev->ops->del_station)
5470 return -EOPNOTSUPP;
5471
5472 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5473 params.subtype =
5474 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5475 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5476 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5477 return -EINVAL;
5478 } else {
5479 /* Default to Deauthentication frame */
5480 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5481 }
5482
5483 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5484 params.reason_code =
5485 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5486 if (params.reason_code == 0)
5487 return -EINVAL; /* 0 is reserved */
5488 } else {
5489 /* Default to reason code 2 */
5490 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5491 }
5492
5493 return rdev_del_station(rdev, dev, &params);
5494 }
5495
5496 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5497 int flags, struct net_device *dev,
5498 u8 *dst, u8 *next_hop,
5499 struct mpath_info *pinfo)
5500 {
5501 void *hdr;
5502 struct nlattr *pinfoattr;
5503
5504 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5505 if (!hdr)
5506 return -1;
5507
5508 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5509 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5510 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5511 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5512 goto nla_put_failure;
5513
5514 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5515 if (!pinfoattr)
5516 goto nla_put_failure;
5517 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5518 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5519 pinfo->frame_qlen))
5520 goto nla_put_failure;
5521 if (((pinfo->filled & MPATH_INFO_SN) &&
5522 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5523 ((pinfo->filled & MPATH_INFO_METRIC) &&
5524 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5525 pinfo->metric)) ||
5526 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5527 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5528 pinfo->exptime)) ||
5529 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5530 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5531 pinfo->flags)) ||
5532 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5533 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5534 pinfo->discovery_timeout)) ||
5535 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5536 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5537 pinfo->discovery_retries)))
5538 goto nla_put_failure;
5539
5540 nla_nest_end(msg, pinfoattr);
5541
5542 genlmsg_end(msg, hdr);
5543 return 0;
5544
5545 nla_put_failure:
5546 genlmsg_cancel(msg, hdr);
5547 return -EMSGSIZE;
5548 }
5549
5550 static int nl80211_dump_mpath(struct sk_buff *skb,
5551 struct netlink_callback *cb)
5552 {
5553 struct mpath_info pinfo;
5554 struct cfg80211_registered_device *rdev;
5555 struct wireless_dev *wdev;
5556 u8 dst[ETH_ALEN];
5557 u8 next_hop[ETH_ALEN];
5558 int path_idx = cb->args[2];
5559 int err;
5560
5561 rtnl_lock();
5562 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5563 if (err)
5564 goto out_err;
5565
5566 if (!rdev->ops->dump_mpath) {
5567 err = -EOPNOTSUPP;
5568 goto out_err;
5569 }
5570
5571 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5572 err = -EOPNOTSUPP;
5573 goto out_err;
5574 }
5575
5576 while (1) {
5577 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5578 next_hop, &pinfo);
5579 if (err == -ENOENT)
5580 break;
5581 if (err)
5582 goto out_err;
5583
5584 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5585 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5586 wdev->netdev, dst, next_hop,
5587 &pinfo) < 0)
5588 goto out;
5589
5590 path_idx++;
5591 }
5592
5593 out:
5594 cb->args[2] = path_idx;
5595 err = skb->len;
5596 out_err:
5597 rtnl_unlock();
5598 return err;
5599 }
5600
5601 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5602 {
5603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5604 int err;
5605 struct net_device *dev = info->user_ptr[1];
5606 struct mpath_info pinfo;
5607 struct sk_buff *msg;
5608 u8 *dst = NULL;
5609 u8 next_hop[ETH_ALEN];
5610
5611 memset(&pinfo, 0, sizeof(pinfo));
5612
5613 if (!info->attrs[NL80211_ATTR_MAC])
5614 return -EINVAL;
5615
5616 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5617
5618 if (!rdev->ops->get_mpath)
5619 return -EOPNOTSUPP;
5620
5621 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5622 return -EOPNOTSUPP;
5623
5624 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5625 if (err)
5626 return err;
5627
5628 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5629 if (!msg)
5630 return -ENOMEM;
5631
5632 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5633 dev, dst, next_hop, &pinfo) < 0) {
5634 nlmsg_free(msg);
5635 return -ENOBUFS;
5636 }
5637
5638 return genlmsg_reply(msg, info);
5639 }
5640
5641 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5642 {
5643 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5644 struct net_device *dev = info->user_ptr[1];
5645 u8 *dst = NULL;
5646 u8 *next_hop = NULL;
5647
5648 if (!info->attrs[NL80211_ATTR_MAC])
5649 return -EINVAL;
5650
5651 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5652 return -EINVAL;
5653
5654 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5655 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5656
5657 if (!rdev->ops->change_mpath)
5658 return -EOPNOTSUPP;
5659
5660 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5661 return -EOPNOTSUPP;
5662
5663 return rdev_change_mpath(rdev, dev, dst, next_hop);
5664 }
5665
5666 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5667 {
5668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5669 struct net_device *dev = info->user_ptr[1];
5670 u8 *dst = NULL;
5671 u8 *next_hop = NULL;
5672
5673 if (!info->attrs[NL80211_ATTR_MAC])
5674 return -EINVAL;
5675
5676 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5677 return -EINVAL;
5678
5679 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5680 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5681
5682 if (!rdev->ops->add_mpath)
5683 return -EOPNOTSUPP;
5684
5685 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5686 return -EOPNOTSUPP;
5687
5688 return rdev_add_mpath(rdev, dev, dst, next_hop);
5689 }
5690
5691 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5692 {
5693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5694 struct net_device *dev = info->user_ptr[1];
5695 u8 *dst = NULL;
5696
5697 if (info->attrs[NL80211_ATTR_MAC])
5698 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5699
5700 if (!rdev->ops->del_mpath)
5701 return -EOPNOTSUPP;
5702
5703 return rdev_del_mpath(rdev, dev, dst);
5704 }
5705
5706 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5707 {
5708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5709 int err;
5710 struct net_device *dev = info->user_ptr[1];
5711 struct mpath_info pinfo;
5712 struct sk_buff *msg;
5713 u8 *dst = NULL;
5714 u8 mpp[ETH_ALEN];
5715
5716 memset(&pinfo, 0, sizeof(pinfo));
5717
5718 if (!info->attrs[NL80211_ATTR_MAC])
5719 return -EINVAL;
5720
5721 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5722
5723 if (!rdev->ops->get_mpp)
5724 return -EOPNOTSUPP;
5725
5726 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5727 return -EOPNOTSUPP;
5728
5729 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5730 if (err)
5731 return err;
5732
5733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5734 if (!msg)
5735 return -ENOMEM;
5736
5737 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5738 dev, dst, mpp, &pinfo) < 0) {
5739 nlmsg_free(msg);
5740 return -ENOBUFS;
5741 }
5742
5743 return genlmsg_reply(msg, info);
5744 }
5745
5746 static int nl80211_dump_mpp(struct sk_buff *skb,
5747 struct netlink_callback *cb)
5748 {
5749 struct mpath_info pinfo;
5750 struct cfg80211_registered_device *rdev;
5751 struct wireless_dev *wdev;
5752 u8 dst[ETH_ALEN];
5753 u8 mpp[ETH_ALEN];
5754 int path_idx = cb->args[2];
5755 int err;
5756
5757 rtnl_lock();
5758 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5759 if (err)
5760 goto out_err;
5761
5762 if (!rdev->ops->dump_mpp) {
5763 err = -EOPNOTSUPP;
5764 goto out_err;
5765 }
5766
5767 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5768 err = -EOPNOTSUPP;
5769 goto out_err;
5770 }
5771
5772 while (1) {
5773 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5774 mpp, &pinfo);
5775 if (err == -ENOENT)
5776 break;
5777 if (err)
5778 goto out_err;
5779
5780 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5781 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5782 wdev->netdev, dst, mpp,
5783 &pinfo) < 0)
5784 goto out;
5785
5786 path_idx++;
5787 }
5788
5789 out:
5790 cb->args[2] = path_idx;
5791 err = skb->len;
5792 out_err:
5793 rtnl_unlock();
5794 return err;
5795 }
5796
5797 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5798 {
5799 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5800 struct net_device *dev = info->user_ptr[1];
5801 struct wireless_dev *wdev = dev->ieee80211_ptr;
5802 struct bss_parameters params;
5803 int err;
5804
5805 memset(&params, 0, sizeof(params));
5806 /* default to not changing parameters */
5807 params.use_cts_prot = -1;
5808 params.use_short_preamble = -1;
5809 params.use_short_slot_time = -1;
5810 params.ap_isolate = -1;
5811 params.ht_opmode = -1;
5812 params.p2p_ctwindow = -1;
5813 params.p2p_opp_ps = -1;
5814
5815 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5816 params.use_cts_prot =
5817 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5818 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5819 params.use_short_preamble =
5820 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5821 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5822 params.use_short_slot_time =
5823 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5824 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5825 params.basic_rates =
5826 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5827 params.basic_rates_len =
5828 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5829 }
5830 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5831 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5832 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5833 params.ht_opmode =
5834 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5835
5836 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5837 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5838 return -EINVAL;
5839 params.p2p_ctwindow =
5840 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5841 if (params.p2p_ctwindow < 0)
5842 return -EINVAL;
5843 if (params.p2p_ctwindow != 0 &&
5844 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5845 return -EINVAL;
5846 }
5847
5848 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5849 u8 tmp;
5850
5851 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5852 return -EINVAL;
5853 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5854 if (tmp > 1)
5855 return -EINVAL;
5856 params.p2p_opp_ps = tmp;
5857 if (params.p2p_opp_ps &&
5858 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5859 return -EINVAL;
5860 }
5861
5862 if (!rdev->ops->change_bss)
5863 return -EOPNOTSUPP;
5864
5865 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5866 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5867 return -EOPNOTSUPP;
5868
5869 wdev_lock(wdev);
5870 err = rdev_change_bss(rdev, dev, &params);
5871 wdev_unlock(wdev);
5872
5873 return err;
5874 }
5875
5876 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5877 {
5878 char *data = NULL;
5879 bool is_indoor;
5880 enum nl80211_user_reg_hint_type user_reg_hint_type;
5881 u32 owner_nlportid;
5882
5883 /*
5884 * You should only get this when cfg80211 hasn't yet initialized
5885 * completely when built-in to the kernel right between the time
5886 * window between nl80211_init() and regulatory_init(), if that is
5887 * even possible.
5888 */
5889 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5890 return -EINPROGRESS;
5891
5892 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5893 user_reg_hint_type =
5894 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5895 else
5896 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5897
5898 switch (user_reg_hint_type) {
5899 case NL80211_USER_REG_HINT_USER:
5900 case NL80211_USER_REG_HINT_CELL_BASE:
5901 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5902 return -EINVAL;
5903
5904 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5905 return regulatory_hint_user(data, user_reg_hint_type);
5906 case NL80211_USER_REG_HINT_INDOOR:
5907 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5908 owner_nlportid = info->snd_portid;
5909 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5910 } else {
5911 owner_nlportid = 0;
5912 is_indoor = true;
5913 }
5914
5915 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5916 default:
5917 return -EINVAL;
5918 }
5919 }
5920
5921 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5922 {
5923 return reg_reload_regdb();
5924 }
5925
5926 static int nl80211_get_mesh_config(struct sk_buff *skb,
5927 struct genl_info *info)
5928 {
5929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5930 struct net_device *dev = info->user_ptr[1];
5931 struct wireless_dev *wdev = dev->ieee80211_ptr;
5932 struct mesh_config cur_params;
5933 int err = 0;
5934 void *hdr;
5935 struct nlattr *pinfoattr;
5936 struct sk_buff *msg;
5937
5938 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5939 return -EOPNOTSUPP;
5940
5941 if (!rdev->ops->get_mesh_config)
5942 return -EOPNOTSUPP;
5943
5944 wdev_lock(wdev);
5945 /* If not connected, get default parameters */
5946 if (!wdev->mesh_id_len)
5947 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5948 else
5949 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5950 wdev_unlock(wdev);
5951
5952 if (err)
5953 return err;
5954
5955 /* Draw up a netlink message to send back */
5956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5957 if (!msg)
5958 return -ENOMEM;
5959 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5960 NL80211_CMD_GET_MESH_CONFIG);
5961 if (!hdr)
5962 goto out;
5963 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5964 if (!pinfoattr)
5965 goto nla_put_failure;
5966 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5967 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5968 cur_params.dot11MeshRetryTimeout) ||
5969 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5970 cur_params.dot11MeshConfirmTimeout) ||
5971 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5972 cur_params.dot11MeshHoldingTimeout) ||
5973 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5974 cur_params.dot11MeshMaxPeerLinks) ||
5975 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5976 cur_params.dot11MeshMaxRetries) ||
5977 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5978 cur_params.dot11MeshTTL) ||
5979 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5980 cur_params.element_ttl) ||
5981 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5982 cur_params.auto_open_plinks) ||
5983 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5984 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5985 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5986 cur_params.dot11MeshHWMPmaxPREQretries) ||
5987 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5988 cur_params.path_refresh_time) ||
5989 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5990 cur_params.min_discovery_timeout) ||
5991 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5992 cur_params.dot11MeshHWMPactivePathTimeout) ||
5993 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5994 cur_params.dot11MeshHWMPpreqMinInterval) ||
5995 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5996 cur_params.dot11MeshHWMPperrMinInterval) ||
5997 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5998 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5999 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6000 cur_params.dot11MeshHWMPRootMode) ||
6001 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6002 cur_params.dot11MeshHWMPRannInterval) ||
6003 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6004 cur_params.dot11MeshGateAnnouncementProtocol) ||
6005 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6006 cur_params.dot11MeshForwarding) ||
6007 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6008 cur_params.rssi_threshold) ||
6009 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6010 cur_params.ht_opmode) ||
6011 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6012 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6013 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6014 cur_params.dot11MeshHWMProotInterval) ||
6015 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6016 cur_params.dot11MeshHWMPconfirmationInterval) ||
6017 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6018 cur_params.power_mode) ||
6019 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6020 cur_params.dot11MeshAwakeWindowDuration) ||
6021 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6022 cur_params.plink_timeout))
6023 goto nla_put_failure;
6024 nla_nest_end(msg, pinfoattr);
6025 genlmsg_end(msg, hdr);
6026 return genlmsg_reply(msg, info);
6027
6028 nla_put_failure:
6029 out:
6030 nlmsg_free(msg);
6031 return -ENOBUFS;
6032 }
6033
6034 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6035 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6036 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6037 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6038 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6039 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6040 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6041 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6042 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6043 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6044 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6045 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6046 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6047 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6048 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6049 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6050 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6051 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6052 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6053 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6054 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6055 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6056 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6057 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6058 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6059 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6060 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6061 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6062 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6063 };
6064
6065 static const struct nla_policy
6066 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6067 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6068 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6069 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6070 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6071 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6072 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6073 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6074 .len = IEEE80211_MAX_DATA_LEN },
6075 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6076 };
6077
6078 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6079 {
6080 u8 val = nla_get_u8(nla);
6081 if (val < min || val > max)
6082 return -EINVAL;
6083 *out = val;
6084 return 0;
6085 }
6086
6087 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6088 {
6089 u8 val = nla_get_u8(nla);
6090 if (val < min || val > max)
6091 return -EINVAL;
6092 *out = val;
6093 return 0;
6094 }
6095
6096 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6097 {
6098 u16 val = nla_get_u16(nla);
6099 if (val < min || val > max)
6100 return -EINVAL;
6101 *out = val;
6102 return 0;
6103 }
6104
6105 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6106 {
6107 u32 val = nla_get_u32(nla);
6108 if (val < min || val > max)
6109 return -EINVAL;
6110 *out = val;
6111 return 0;
6112 }
6113
6114 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6115 {
6116 s32 val = nla_get_s32(nla);
6117 if (val < min || val > max)
6118 return -EINVAL;
6119 *out = val;
6120 return 0;
6121 }
6122
6123 static int nl80211_check_power_mode(const struct nlattr *nla,
6124 enum nl80211_mesh_power_mode min,
6125 enum nl80211_mesh_power_mode max,
6126 enum nl80211_mesh_power_mode *out)
6127 {
6128 u32 val = nla_get_u32(nla);
6129 if (val < min || val > max)
6130 return -EINVAL;
6131 *out = val;
6132 return 0;
6133 }
6134
6135 static int nl80211_parse_mesh_config(struct genl_info *info,
6136 struct mesh_config *cfg,
6137 u32 *mask_out)
6138 {
6139 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6140 u32 mask = 0;
6141 u16 ht_opmode;
6142
6143 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6144 do { \
6145 if (tb[attr]) { \
6146 if (fn(tb[attr], min, max, &cfg->param)) \
6147 return -EINVAL; \
6148 mask |= (1 << (attr - 1)); \
6149 } \
6150 } while (0)
6151
6152 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6153 return -EINVAL;
6154 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6155 info->attrs[NL80211_ATTR_MESH_CONFIG],
6156 nl80211_meshconf_params_policy, info->extack))
6157 return -EINVAL;
6158
6159 /* This makes sure that there aren't more than 32 mesh config
6160 * parameters (otherwise our bitfield scheme would not work.) */
6161 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6162
6163 /* Fill in the params struct */
6164 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6165 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6166 nl80211_check_u16);
6167 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6168 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6169 nl80211_check_u16);
6170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6171 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6172 nl80211_check_u16);
6173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6174 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6175 nl80211_check_u16);
6176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6177 mask, NL80211_MESHCONF_MAX_RETRIES,
6178 nl80211_check_u8);
6179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6180 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6182 mask, NL80211_MESHCONF_ELEMENT_TTL,
6183 nl80211_check_u8);
6184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6185 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6186 nl80211_check_bool);
6187 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6188 1, 255, mask,
6189 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6190 nl80211_check_u32);
6191 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6192 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6193 nl80211_check_u8);
6194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6195 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6196 nl80211_check_u32);
6197 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6198 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6199 nl80211_check_u16);
6200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6201 1, 65535, mask,
6202 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6203 nl80211_check_u32);
6204 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6205 1, 65535, mask,
6206 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6207 nl80211_check_u16);
6208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6209 1, 65535, mask,
6210 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6211 nl80211_check_u16);
6212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6213 dot11MeshHWMPnetDiameterTraversalTime,
6214 1, 65535, mask,
6215 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6216 nl80211_check_u16);
6217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6218 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6219 nl80211_check_u8);
6220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6221 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6222 nl80211_check_u16);
6223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6224 dot11MeshGateAnnouncementProtocol, 0, 1,
6225 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6226 nl80211_check_bool);
6227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6228 mask, NL80211_MESHCONF_FORWARDING,
6229 nl80211_check_bool);
6230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6231 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6232 nl80211_check_s32);
6233 /*
6234 * Check HT operation mode based on
6235 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6236 */
6237 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6238 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6239
6240 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6241 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6242 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6243 return -EINVAL;
6244
6245 /* NON_HT_STA bit is reserved, but some programs set it */
6246 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6247
6248 cfg->ht_opmode = ht_opmode;
6249 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6250 }
6251 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6252 1, 65535, mask,
6253 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6254 nl80211_check_u32);
6255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6256 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6257 nl80211_check_u16);
6258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6259 dot11MeshHWMPconfirmationInterval,
6260 1, 65535, mask,
6261 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6262 nl80211_check_u16);
6263 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6264 NL80211_MESH_POWER_ACTIVE,
6265 NL80211_MESH_POWER_MAX,
6266 mask, NL80211_MESHCONF_POWER_MODE,
6267 nl80211_check_power_mode);
6268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6269 0, 65535, mask,
6270 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6271 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6272 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6273 nl80211_check_u32);
6274 if (mask_out)
6275 *mask_out = mask;
6276
6277 return 0;
6278
6279 #undef FILL_IN_MESH_PARAM_IF_SET
6280 }
6281
6282 static int nl80211_parse_mesh_setup(struct genl_info *info,
6283 struct mesh_setup *setup)
6284 {
6285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6287
6288 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6289 return -EINVAL;
6290 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6291 info->attrs[NL80211_ATTR_MESH_SETUP],
6292 nl80211_mesh_setup_params_policy, info->extack))
6293 return -EINVAL;
6294
6295 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6296 setup->sync_method =
6297 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6298 IEEE80211_SYNC_METHOD_VENDOR :
6299 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6300
6301 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6302 setup->path_sel_proto =
6303 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6304 IEEE80211_PATH_PROTOCOL_VENDOR :
6305 IEEE80211_PATH_PROTOCOL_HWMP;
6306
6307 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6308 setup->path_metric =
6309 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6310 IEEE80211_PATH_METRIC_VENDOR :
6311 IEEE80211_PATH_METRIC_AIRTIME;
6312
6313 if (tb[NL80211_MESH_SETUP_IE]) {
6314 struct nlattr *ieattr =
6315 tb[NL80211_MESH_SETUP_IE];
6316 if (!is_valid_ie_attr(ieattr))
6317 return -EINVAL;
6318 setup->ie = nla_data(ieattr);
6319 setup->ie_len = nla_len(ieattr);
6320 }
6321 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6322 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6323 return -EINVAL;
6324 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6325 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6326 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6327 if (setup->is_secure)
6328 setup->user_mpm = true;
6329
6330 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6331 if (!setup->user_mpm)
6332 return -EINVAL;
6333 setup->auth_id =
6334 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6335 }
6336
6337 return 0;
6338 }
6339
6340 static int nl80211_update_mesh_config(struct sk_buff *skb,
6341 struct genl_info *info)
6342 {
6343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6344 struct net_device *dev = info->user_ptr[1];
6345 struct wireless_dev *wdev = dev->ieee80211_ptr;
6346 struct mesh_config cfg;
6347 u32 mask;
6348 int err;
6349
6350 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6351 return -EOPNOTSUPP;
6352
6353 if (!rdev->ops->update_mesh_config)
6354 return -EOPNOTSUPP;
6355
6356 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6357 if (err)
6358 return err;
6359
6360 wdev_lock(wdev);
6361 if (!wdev->mesh_id_len)
6362 err = -ENOLINK;
6363
6364 if (!err)
6365 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6366
6367 wdev_unlock(wdev);
6368
6369 return err;
6370 }
6371
6372 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6373 struct sk_buff *msg)
6374 {
6375 struct nlattr *nl_reg_rules;
6376 unsigned int i;
6377
6378 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6379 (regdom->dfs_region &&
6380 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6381 goto nla_put_failure;
6382
6383 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6384 if (!nl_reg_rules)
6385 goto nla_put_failure;
6386
6387 for (i = 0; i < regdom->n_reg_rules; i++) {
6388 struct nlattr *nl_reg_rule;
6389 const struct ieee80211_reg_rule *reg_rule;
6390 const struct ieee80211_freq_range *freq_range;
6391 const struct ieee80211_power_rule *power_rule;
6392 unsigned int max_bandwidth_khz;
6393
6394 reg_rule = &regdom->reg_rules[i];
6395 freq_range = &reg_rule->freq_range;
6396 power_rule = &reg_rule->power_rule;
6397
6398 nl_reg_rule = nla_nest_start(msg, i);
6399 if (!nl_reg_rule)
6400 goto nla_put_failure;
6401
6402 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6403 if (!max_bandwidth_khz)
6404 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6405 reg_rule);
6406
6407 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6408 reg_rule->flags) ||
6409 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6410 freq_range->start_freq_khz) ||
6411 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6412 freq_range->end_freq_khz) ||
6413 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6414 max_bandwidth_khz) ||
6415 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6416 power_rule->max_antenna_gain) ||
6417 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6418 power_rule->max_eirp) ||
6419 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6420 reg_rule->dfs_cac_ms))
6421 goto nla_put_failure;
6422
6423 nla_nest_end(msg, nl_reg_rule);
6424 }
6425
6426 nla_nest_end(msg, nl_reg_rules);
6427 return 0;
6428
6429 nla_put_failure:
6430 return -EMSGSIZE;
6431 }
6432
6433 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6434 {
6435 const struct ieee80211_regdomain *regdom = NULL;
6436 struct cfg80211_registered_device *rdev;
6437 struct wiphy *wiphy = NULL;
6438 struct sk_buff *msg;
6439 void *hdr;
6440
6441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6442 if (!msg)
6443 return -ENOBUFS;
6444
6445 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6446 NL80211_CMD_GET_REG);
6447 if (!hdr)
6448 goto put_failure;
6449
6450 if (info->attrs[NL80211_ATTR_WIPHY]) {
6451 bool self_managed;
6452
6453 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6454 if (IS_ERR(rdev)) {
6455 nlmsg_free(msg);
6456 return PTR_ERR(rdev);
6457 }
6458
6459 wiphy = &rdev->wiphy;
6460 self_managed = wiphy->regulatory_flags &
6461 REGULATORY_WIPHY_SELF_MANAGED;
6462 regdom = get_wiphy_regdom(wiphy);
6463
6464 /* a self-managed-reg device must have a private regdom */
6465 if (WARN_ON(!regdom && self_managed)) {
6466 nlmsg_free(msg);
6467 return -EINVAL;
6468 }
6469
6470 if (regdom &&
6471 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6472 goto nla_put_failure;
6473 }
6474
6475 if (!wiphy && reg_last_request_cell_base() &&
6476 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6477 NL80211_USER_REG_HINT_CELL_BASE))
6478 goto nla_put_failure;
6479
6480 rcu_read_lock();
6481
6482 if (!regdom)
6483 regdom = rcu_dereference(cfg80211_regdomain);
6484
6485 if (nl80211_put_regdom(regdom, msg))
6486 goto nla_put_failure_rcu;
6487
6488 rcu_read_unlock();
6489
6490 genlmsg_end(msg, hdr);
6491 return genlmsg_reply(msg, info);
6492
6493 nla_put_failure_rcu:
6494 rcu_read_unlock();
6495 nla_put_failure:
6496 put_failure:
6497 nlmsg_free(msg);
6498 return -EMSGSIZE;
6499 }
6500
6501 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6502 u32 seq, int flags, struct wiphy *wiphy,
6503 const struct ieee80211_regdomain *regdom)
6504 {
6505 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6506 NL80211_CMD_GET_REG);
6507
6508 if (!hdr)
6509 return -1;
6510
6511 genl_dump_check_consistent(cb, hdr);
6512
6513 if (nl80211_put_regdom(regdom, msg))
6514 goto nla_put_failure;
6515
6516 if (!wiphy && reg_last_request_cell_base() &&
6517 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6518 NL80211_USER_REG_HINT_CELL_BASE))
6519 goto nla_put_failure;
6520
6521 if (wiphy &&
6522 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6523 goto nla_put_failure;
6524
6525 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6526 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6527 goto nla_put_failure;
6528
6529 genlmsg_end(msg, hdr);
6530 return 0;
6531
6532 nla_put_failure:
6533 genlmsg_cancel(msg, hdr);
6534 return -EMSGSIZE;
6535 }
6536
6537 static int nl80211_get_reg_dump(struct sk_buff *skb,
6538 struct netlink_callback *cb)
6539 {
6540 const struct ieee80211_regdomain *regdom = NULL;
6541 struct cfg80211_registered_device *rdev;
6542 int err, reg_idx, start = cb->args[2];
6543
6544 rtnl_lock();
6545
6546 if (cfg80211_regdomain && start == 0) {
6547 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6548 NLM_F_MULTI, NULL,
6549 rtnl_dereference(cfg80211_regdomain));
6550 if (err < 0)
6551 goto out_err;
6552 }
6553
6554 /* the global regdom is idx 0 */
6555 reg_idx = 1;
6556 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6557 regdom = get_wiphy_regdom(&rdev->wiphy);
6558 if (!regdom)
6559 continue;
6560
6561 if (++reg_idx <= start)
6562 continue;
6563
6564 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6565 NLM_F_MULTI, &rdev->wiphy, regdom);
6566 if (err < 0) {
6567 reg_idx--;
6568 break;
6569 }
6570 }
6571
6572 cb->args[2] = reg_idx;
6573 err = skb->len;
6574 out_err:
6575 rtnl_unlock();
6576 return err;
6577 }
6578
6579 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6580 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6581 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6582 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6583 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6584 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6585 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6586 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6587 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6588 };
6589
6590 static int parse_reg_rule(struct nlattr *tb[],
6591 struct ieee80211_reg_rule *reg_rule)
6592 {
6593 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6594 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6595
6596 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6597 return -EINVAL;
6598 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6599 return -EINVAL;
6600 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6601 return -EINVAL;
6602 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6603 return -EINVAL;
6604 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6605 return -EINVAL;
6606
6607 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6608
6609 freq_range->start_freq_khz =
6610 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6611 freq_range->end_freq_khz =
6612 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6613 freq_range->max_bandwidth_khz =
6614 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6615
6616 power_rule->max_eirp =
6617 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6618
6619 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6620 power_rule->max_antenna_gain =
6621 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6622
6623 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6624 reg_rule->dfs_cac_ms =
6625 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6626
6627 return 0;
6628 }
6629
6630 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6631 {
6632 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6633 struct nlattr *nl_reg_rule;
6634 char *alpha2;
6635 int rem_reg_rules, r;
6636 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6637 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6638 struct ieee80211_regdomain *rd;
6639
6640 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6641 return -EINVAL;
6642
6643 if (!info->attrs[NL80211_ATTR_REG_RULES])
6644 return -EINVAL;
6645
6646 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6647
6648 if (info->attrs[NL80211_ATTR_DFS_REGION])
6649 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6650
6651 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6652 rem_reg_rules) {
6653 num_rules++;
6654 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6655 return -EINVAL;
6656 }
6657
6658 if (!reg_is_valid_request(alpha2))
6659 return -EINVAL;
6660
6661 size_of_regd = sizeof(struct ieee80211_regdomain) +
6662 num_rules * sizeof(struct ieee80211_reg_rule);
6663
6664 rd = kzalloc(size_of_regd, GFP_KERNEL);
6665 if (!rd)
6666 return -ENOMEM;
6667
6668 rd->n_reg_rules = num_rules;
6669 rd->alpha2[0] = alpha2[0];
6670 rd->alpha2[1] = alpha2[1];
6671
6672 /*
6673 * Disable DFS master mode if the DFS region was
6674 * not supported or known on this kernel.
6675 */
6676 if (reg_supported_dfs_region(dfs_region))
6677 rd->dfs_region = dfs_region;
6678
6679 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6680 rem_reg_rules) {
6681 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6682 nl_reg_rule, reg_rule_policy,
6683 info->extack);
6684 if (r)
6685 goto bad_reg;
6686 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6687 if (r)
6688 goto bad_reg;
6689
6690 rule_idx++;
6691
6692 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6693 r = -EINVAL;
6694 goto bad_reg;
6695 }
6696 }
6697
6698 /* set_regdom takes ownership of rd */
6699 return set_regdom(rd, REGD_SOURCE_CRDA);
6700 bad_reg:
6701 kfree(rd);
6702 return r;
6703 }
6704 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6705
6706 static int validate_scan_freqs(struct nlattr *freqs)
6707 {
6708 struct nlattr *attr1, *attr2;
6709 int n_channels = 0, tmp1, tmp2;
6710
6711 nla_for_each_nested(attr1, freqs, tmp1)
6712 if (nla_len(attr1) != sizeof(u32))
6713 return 0;
6714
6715 nla_for_each_nested(attr1, freqs, tmp1) {
6716 n_channels++;
6717 /*
6718 * Some hardware has a limited channel list for
6719 * scanning, and it is pretty much nonsensical
6720 * to scan for a channel twice, so disallow that
6721 * and don't require drivers to check that the
6722 * channel list they get isn't longer than what
6723 * they can scan, as long as they can scan all
6724 * the channels they registered at once.
6725 */
6726 nla_for_each_nested(attr2, freqs, tmp2)
6727 if (attr1 != attr2 &&
6728 nla_get_u32(attr1) == nla_get_u32(attr2))
6729 return 0;
6730 }
6731
6732 return n_channels;
6733 }
6734
6735 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6736 {
6737 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6738 }
6739
6740 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6741 struct cfg80211_bss_selection *bss_select)
6742 {
6743 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6744 struct nlattr *nest;
6745 int err;
6746 bool found = false;
6747 int i;
6748
6749 /* only process one nested attribute */
6750 nest = nla_data(nla);
6751 if (!nla_ok(nest, nla_len(nest)))
6752 return -EINVAL;
6753
6754 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6755 nl80211_bss_select_policy, NULL);
6756 if (err)
6757 return err;
6758
6759 /* only one attribute may be given */
6760 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6761 if (attr[i]) {
6762 if (found)
6763 return -EINVAL;
6764 found = true;
6765 }
6766 }
6767
6768 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6769
6770 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6771 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6772
6773 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6774 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6775 bss_select->param.band_pref =
6776 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6777 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6778 return -EINVAL;
6779 }
6780
6781 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6782 struct nl80211_bss_select_rssi_adjust *adj_param;
6783
6784 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6785 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6786 bss_select->param.adjust.band = adj_param->band;
6787 bss_select->param.adjust.delta = adj_param->delta;
6788 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6789 return -EINVAL;
6790 }
6791
6792 /* user-space did not provide behaviour attribute */
6793 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6794 return -EINVAL;
6795
6796 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6797 return -EINVAL;
6798
6799 return 0;
6800 }
6801
6802 static int nl80211_parse_random_mac(struct nlattr **attrs,
6803 u8 *mac_addr, u8 *mac_addr_mask)
6804 {
6805 int i;
6806
6807 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6808 eth_zero_addr(mac_addr);
6809 eth_zero_addr(mac_addr_mask);
6810 mac_addr[0] = 0x2;
6811 mac_addr_mask[0] = 0x3;
6812
6813 return 0;
6814 }
6815
6816 /* need both or none */
6817 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6818 return -EINVAL;
6819
6820 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6821 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6822
6823 /* don't allow or configure an mcast address */
6824 if (!is_multicast_ether_addr(mac_addr_mask) ||
6825 is_multicast_ether_addr(mac_addr))
6826 return -EINVAL;
6827
6828 /*
6829 * allow users to pass a MAC address that has bits set outside
6830 * of the mask, but don't bother drivers with having to deal
6831 * with such bits
6832 */
6833 for (i = 0; i < ETH_ALEN; i++)
6834 mac_addr[i] &= mac_addr_mask[i];
6835
6836 return 0;
6837 }
6838
6839 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6840 {
6841 ASSERT_WDEV_LOCK(wdev);
6842
6843 if (!cfg80211_beaconing_iface_active(wdev))
6844 return true;
6845
6846 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6847 return true;
6848
6849 return regulatory_pre_cac_allowed(wdev->wiphy);
6850 }
6851
6852 static int
6853 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6854 void *request, struct nlattr **attrs,
6855 bool is_sched_scan)
6856 {
6857 u8 *mac_addr, *mac_addr_mask;
6858 u32 *flags;
6859 enum nl80211_feature_flags randomness_flag;
6860
6861 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6862 return 0;
6863
6864 if (is_sched_scan) {
6865 struct cfg80211_sched_scan_request *req = request;
6866
6867 randomness_flag = wdev ?
6868 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6869 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6870 flags = &req->flags;
6871 mac_addr = req->mac_addr;
6872 mac_addr_mask = req->mac_addr_mask;
6873 } else {
6874 struct cfg80211_scan_request *req = request;
6875
6876 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6877 flags = &req->flags;
6878 mac_addr = req->mac_addr;
6879 mac_addr_mask = req->mac_addr_mask;
6880 }
6881
6882 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6883
6884 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6885 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
6886 ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) &&
6887 !wiphy_ext_feature_isset(wiphy,
6888 NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) ||
6889 ((*flags & NL80211_SCAN_FLAG_LOW_POWER) &&
6890 !wiphy_ext_feature_isset(wiphy,
6891 NL80211_EXT_FEATURE_LOW_POWER_SCAN)) ||
6892 ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) &&
6893 !wiphy_ext_feature_isset(wiphy,
6894 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN)))
6895 return -EOPNOTSUPP;
6896
6897 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6898 int err;
6899
6900 if (!(wiphy->features & randomness_flag) ||
6901 (wdev && wdev->current_bss))
6902 return -EOPNOTSUPP;
6903
6904 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6905 if (err)
6906 return err;
6907 }
6908
6909 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6910 !wiphy_ext_feature_isset(wiphy,
6911 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6912 return -EOPNOTSUPP;
6913
6914 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6915 !wiphy_ext_feature_isset(wiphy,
6916 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6917 return -EOPNOTSUPP;
6918
6919 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6920 !wiphy_ext_feature_isset(wiphy,
6921 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6922 return -EOPNOTSUPP;
6923
6924 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6925 !wiphy_ext_feature_isset(wiphy,
6926 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6927 return -EOPNOTSUPP;
6928
6929 return 0;
6930 }
6931
6932 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6933 {
6934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6935 struct wireless_dev *wdev = info->user_ptr[1];
6936 struct cfg80211_scan_request *request;
6937 struct nlattr *attr;
6938 struct wiphy *wiphy;
6939 int err, tmp, n_ssids = 0, n_channels, i;
6940 size_t ie_len;
6941
6942 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6943 return -EINVAL;
6944
6945 wiphy = &rdev->wiphy;
6946
6947 if (wdev->iftype == NL80211_IFTYPE_NAN)
6948 return -EOPNOTSUPP;
6949
6950 if (!rdev->ops->scan)
6951 return -EOPNOTSUPP;
6952
6953 if (rdev->scan_req || rdev->scan_msg) {
6954 err = -EBUSY;
6955 goto unlock;
6956 }
6957
6958 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6959 n_channels = validate_scan_freqs(
6960 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6961 if (!n_channels) {
6962 err = -EINVAL;
6963 goto unlock;
6964 }
6965 } else {
6966 n_channels = ieee80211_get_num_supported_channels(wiphy);
6967 }
6968
6969 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6970 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6971 n_ssids++;
6972
6973 if (n_ssids > wiphy->max_scan_ssids) {
6974 err = -EINVAL;
6975 goto unlock;
6976 }
6977
6978 if (info->attrs[NL80211_ATTR_IE])
6979 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6980 else
6981 ie_len = 0;
6982
6983 if (ie_len > wiphy->max_scan_ie_len) {
6984 err = -EINVAL;
6985 goto unlock;
6986 }
6987
6988 request = kzalloc(sizeof(*request)
6989 + sizeof(*request->ssids) * n_ssids
6990 + sizeof(*request->channels) * n_channels
6991 + ie_len, GFP_KERNEL);
6992 if (!request) {
6993 err = -ENOMEM;
6994 goto unlock;
6995 }
6996
6997 if (n_ssids)
6998 request->ssids = (void *)&request->channels[n_channels];
6999 request->n_ssids = n_ssids;
7000 if (ie_len) {
7001 if (n_ssids)
7002 request->ie = (void *)(request->ssids + n_ssids);
7003 else
7004 request->ie = (void *)(request->channels + n_channels);
7005 }
7006
7007 i = 0;
7008 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7009 /* user specified, bail out if channel not found */
7010 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7011 struct ieee80211_channel *chan;
7012
7013 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7014
7015 if (!chan) {
7016 err = -EINVAL;
7017 goto out_free;
7018 }
7019
7020 /* ignore disabled channels */
7021 if (chan->flags & IEEE80211_CHAN_DISABLED)
7022 continue;
7023
7024 request->channels[i] = chan;
7025 i++;
7026 }
7027 } else {
7028 enum nl80211_band band;
7029
7030 /* all channels */
7031 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7032 int j;
7033
7034 if (!wiphy->bands[band])
7035 continue;
7036 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7037 struct ieee80211_channel *chan;
7038
7039 chan = &wiphy->bands[band]->channels[j];
7040
7041 if (chan->flags & IEEE80211_CHAN_DISABLED)
7042 continue;
7043
7044 request->channels[i] = chan;
7045 i++;
7046 }
7047 }
7048 }
7049
7050 if (!i) {
7051 err = -EINVAL;
7052 goto out_free;
7053 }
7054
7055 request->n_channels = i;
7056
7057 wdev_lock(wdev);
7058 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7059 struct ieee80211_channel *chan;
7060
7061 if (request->n_channels != 1) {
7062 wdev_unlock(wdev);
7063 err = -EBUSY;
7064 goto out_free;
7065 }
7066
7067 chan = request->channels[0];
7068 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7069 wdev_unlock(wdev);
7070 err = -EBUSY;
7071 goto out_free;
7072 }
7073 }
7074 wdev_unlock(wdev);
7075
7076 i = 0;
7077 if (n_ssids) {
7078 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7079 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7080 err = -EINVAL;
7081 goto out_free;
7082 }
7083 request->ssids[i].ssid_len = nla_len(attr);
7084 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7085 i++;
7086 }
7087 }
7088
7089 if (info->attrs[NL80211_ATTR_IE]) {
7090 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7091 memcpy((void *)request->ie,
7092 nla_data(info->attrs[NL80211_ATTR_IE]),
7093 request->ie_len);
7094 }
7095
7096 for (i = 0; i < NUM_NL80211_BANDS; i++)
7097 if (wiphy->bands[i])
7098 request->rates[i] =
7099 (1 << wiphy->bands[i]->n_bitrates) - 1;
7100
7101 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7102 nla_for_each_nested(attr,
7103 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7104 tmp) {
7105 enum nl80211_band band = nla_type(attr);
7106
7107 if (band < 0 || band >= NUM_NL80211_BANDS) {
7108 err = -EINVAL;
7109 goto out_free;
7110 }
7111
7112 if (!wiphy->bands[band])
7113 continue;
7114
7115 err = ieee80211_get_ratemask(wiphy->bands[band],
7116 nla_data(attr),
7117 nla_len(attr),
7118 &request->rates[band]);
7119 if (err)
7120 goto out_free;
7121 }
7122 }
7123
7124 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7125 if (!wiphy_ext_feature_isset(wiphy,
7126 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7127 err = -EOPNOTSUPP;
7128 goto out_free;
7129 }
7130
7131 request->duration =
7132 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7133 request->duration_mandatory =
7134 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7135 }
7136
7137 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7138 false);
7139 if (err)
7140 goto out_free;
7141
7142 request->no_cck =
7143 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7144
7145 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7146 * BSSID to scan for. This was problematic because that same attribute
7147 * was already used for another purpose (local random MAC address). The
7148 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7149 * compatibility with older userspace components, also use the
7150 * NL80211_ATTR_MAC value here if it can be determined to be used for
7151 * the specific BSSID use case instead of the random MAC address
7152 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7153 */
7154 if (info->attrs[NL80211_ATTR_BSSID])
7155 memcpy(request->bssid,
7156 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7157 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7158 info->attrs[NL80211_ATTR_MAC])
7159 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7160 ETH_ALEN);
7161 else
7162 eth_broadcast_addr(request->bssid);
7163
7164 request->wdev = wdev;
7165 request->wiphy = &rdev->wiphy;
7166 request->scan_start = jiffies;
7167
7168 rdev->scan_req = request;
7169 err = rdev_scan(rdev, request);
7170
7171 if (!err) {
7172 nl80211_send_scan_start(rdev, wdev);
7173 if (wdev->netdev)
7174 dev_hold(wdev->netdev);
7175 } else {
7176 out_free:
7177 rdev->scan_req = NULL;
7178 kfree(request);
7179 }
7180
7181 unlock:
7182 return err;
7183 }
7184
7185 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7186 {
7187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7188 struct wireless_dev *wdev = info->user_ptr[1];
7189
7190 if (!rdev->ops->abort_scan)
7191 return -EOPNOTSUPP;
7192
7193 if (rdev->scan_msg)
7194 return 0;
7195
7196 if (!rdev->scan_req)
7197 return -ENOENT;
7198
7199 rdev_abort_scan(rdev, wdev);
7200 return 0;
7201 }
7202
7203 static int
7204 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7205 struct cfg80211_sched_scan_request *request,
7206 struct nlattr **attrs)
7207 {
7208 int tmp, err, i = 0;
7209 struct nlattr *attr;
7210
7211 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7212 u32 interval;
7213
7214 /*
7215 * If scan plans are not specified,
7216 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7217 * case one scan plan will be set with the specified scan
7218 * interval and infinite number of iterations.
7219 */
7220 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7221 if (!interval)
7222 return -EINVAL;
7223
7224 request->scan_plans[0].interval =
7225 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7226 if (!request->scan_plans[0].interval)
7227 return -EINVAL;
7228
7229 if (request->scan_plans[0].interval >
7230 wiphy->max_sched_scan_plan_interval)
7231 request->scan_plans[0].interval =
7232 wiphy->max_sched_scan_plan_interval;
7233
7234 return 0;
7235 }
7236
7237 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7238 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7239
7240 if (WARN_ON(i >= n_plans))
7241 return -EINVAL;
7242
7243 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7244 attr, nl80211_plan_policy, NULL);
7245 if (err)
7246 return err;
7247
7248 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7249 return -EINVAL;
7250
7251 request->scan_plans[i].interval =
7252 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7253 if (!request->scan_plans[i].interval ||
7254 request->scan_plans[i].interval >
7255 wiphy->max_sched_scan_plan_interval)
7256 return -EINVAL;
7257
7258 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7259 request->scan_plans[i].iterations =
7260 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7261 if (!request->scan_plans[i].iterations ||
7262 (request->scan_plans[i].iterations >
7263 wiphy->max_sched_scan_plan_iterations))
7264 return -EINVAL;
7265 } else if (i < n_plans - 1) {
7266 /*
7267 * All scan plans but the last one must specify
7268 * a finite number of iterations
7269 */
7270 return -EINVAL;
7271 }
7272
7273 i++;
7274 }
7275
7276 /*
7277 * The last scan plan must not specify the number of
7278 * iterations, it is supposed to run infinitely
7279 */
7280 if (request->scan_plans[n_plans - 1].iterations)
7281 return -EINVAL;
7282
7283 return 0;
7284 }
7285
7286 static struct cfg80211_sched_scan_request *
7287 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7288 struct nlattr **attrs, int max_match_sets)
7289 {
7290 struct cfg80211_sched_scan_request *request;
7291 struct nlattr *attr;
7292 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7293 enum nl80211_band band;
7294 size_t ie_len;
7295 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7296 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7297
7298 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7299 return ERR_PTR(-EINVAL);
7300
7301 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7302 n_channels = validate_scan_freqs(
7303 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7304 if (!n_channels)
7305 return ERR_PTR(-EINVAL);
7306 } else {
7307 n_channels = ieee80211_get_num_supported_channels(wiphy);
7308 }
7309
7310 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7311 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7312 tmp)
7313 n_ssids++;
7314
7315 if (n_ssids > wiphy->max_sched_scan_ssids)
7316 return ERR_PTR(-EINVAL);
7317
7318 /*
7319 * First, count the number of 'real' matchsets. Due to an issue with
7320 * the old implementation, matchsets containing only the RSSI attribute
7321 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7322 * RSSI for all matchsets, rather than their own matchset for reporting
7323 * all APs with a strong RSSI. This is needed to be compatible with
7324 * older userspace that treated a matchset with only the RSSI as the
7325 * global RSSI for all other matchsets - if there are other matchsets.
7326 */
7327 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7328 nla_for_each_nested(attr,
7329 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7330 tmp) {
7331 struct nlattr *rssi;
7332
7333 err = nla_parse_nested(tb,
7334 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7335 attr, nl80211_match_policy,
7336 NULL);
7337 if (err)
7338 return ERR_PTR(err);
7339
7340 /* SSID and BSSID are mutually exclusive */
7341 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7342 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7343 return ERR_PTR(-EINVAL);
7344
7345 /* add other standalone attributes here */
7346 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7347 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7348 n_match_sets++;
7349 continue;
7350 }
7351 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7352 if (rssi)
7353 default_match_rssi = nla_get_s32(rssi);
7354 }
7355 }
7356
7357 /* However, if there's no other matchset, add the RSSI one */
7358 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7359 n_match_sets = 1;
7360
7361 if (n_match_sets > max_match_sets)
7362 return ERR_PTR(-EINVAL);
7363
7364 if (attrs[NL80211_ATTR_IE])
7365 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7366 else
7367 ie_len = 0;
7368
7369 if (ie_len > wiphy->max_sched_scan_ie_len)
7370 return ERR_PTR(-EINVAL);
7371
7372 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7373 /*
7374 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7375 * each scan plan already specifies its own interval
7376 */
7377 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7378 return ERR_PTR(-EINVAL);
7379
7380 nla_for_each_nested(attr,
7381 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7382 n_plans++;
7383 } else {
7384 /*
7385 * The scan interval attribute is kept for backward
7386 * compatibility. If no scan plans are specified and sched scan
7387 * interval is specified, one scan plan will be set with this
7388 * scan interval and infinite number of iterations.
7389 */
7390 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7391 return ERR_PTR(-EINVAL);
7392
7393 n_plans = 1;
7394 }
7395
7396 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7397 return ERR_PTR(-EINVAL);
7398
7399 if (!wiphy_ext_feature_isset(
7400 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7401 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7402 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7403 return ERR_PTR(-EINVAL);
7404
7405 request = kzalloc(sizeof(*request)
7406 + sizeof(*request->ssids) * n_ssids
7407 + sizeof(*request->match_sets) * n_match_sets
7408 + sizeof(*request->scan_plans) * n_plans
7409 + sizeof(*request->channels) * n_channels
7410 + ie_len, GFP_KERNEL);
7411 if (!request)
7412 return ERR_PTR(-ENOMEM);
7413
7414 if (n_ssids)
7415 request->ssids = (void *)&request->channels[n_channels];
7416 request->n_ssids = n_ssids;
7417 if (ie_len) {
7418 if (n_ssids)
7419 request->ie = (void *)(request->ssids + n_ssids);
7420 else
7421 request->ie = (void *)(request->channels + n_channels);
7422 }
7423
7424 if (n_match_sets) {
7425 if (request->ie)
7426 request->match_sets = (void *)(request->ie + ie_len);
7427 else if (n_ssids)
7428 request->match_sets =
7429 (void *)(request->ssids + n_ssids);
7430 else
7431 request->match_sets =
7432 (void *)(request->channels + n_channels);
7433 }
7434 request->n_match_sets = n_match_sets;
7435
7436 if (n_match_sets)
7437 request->scan_plans = (void *)(request->match_sets +
7438 n_match_sets);
7439 else if (request->ie)
7440 request->scan_plans = (void *)(request->ie + ie_len);
7441 else if (n_ssids)
7442 request->scan_plans = (void *)(request->ssids + n_ssids);
7443 else
7444 request->scan_plans = (void *)(request->channels + n_channels);
7445
7446 request->n_scan_plans = n_plans;
7447
7448 i = 0;
7449 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7450 /* user specified, bail out if channel not found */
7451 nla_for_each_nested(attr,
7452 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7453 tmp) {
7454 struct ieee80211_channel *chan;
7455
7456 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7457
7458 if (!chan) {
7459 err = -EINVAL;
7460 goto out_free;
7461 }
7462
7463 /* ignore disabled channels */
7464 if (chan->flags & IEEE80211_CHAN_DISABLED)
7465 continue;
7466
7467 request->channels[i] = chan;
7468 i++;
7469 }
7470 } else {
7471 /* all channels */
7472 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7473 int j;
7474
7475 if (!wiphy->bands[band])
7476 continue;
7477 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7478 struct ieee80211_channel *chan;
7479
7480 chan = &wiphy->bands[band]->channels[j];
7481
7482 if (chan->flags & IEEE80211_CHAN_DISABLED)
7483 continue;
7484
7485 request->channels[i] = chan;
7486 i++;
7487 }
7488 }
7489 }
7490
7491 if (!i) {
7492 err = -EINVAL;
7493 goto out_free;
7494 }
7495
7496 request->n_channels = i;
7497
7498 i = 0;
7499 if (n_ssids) {
7500 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7501 tmp) {
7502 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7503 err = -EINVAL;
7504 goto out_free;
7505 }
7506 request->ssids[i].ssid_len = nla_len(attr);
7507 memcpy(request->ssids[i].ssid, nla_data(attr),
7508 nla_len(attr));
7509 i++;
7510 }
7511 }
7512
7513 i = 0;
7514 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7515 nla_for_each_nested(attr,
7516 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7517 tmp) {
7518 struct nlattr *ssid, *bssid, *rssi;
7519
7520 err = nla_parse_nested(tb,
7521 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7522 attr, nl80211_match_policy,
7523 NULL);
7524 if (err)
7525 goto out_free;
7526 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7527 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7528 if (ssid || bssid) {
7529 if (WARN_ON(i >= n_match_sets)) {
7530 /* this indicates a programming error,
7531 * the loop above should have verified
7532 * things properly
7533 */
7534 err = -EINVAL;
7535 goto out_free;
7536 }
7537
7538 if (ssid) {
7539 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7540 err = -EINVAL;
7541 goto out_free;
7542 }
7543 memcpy(request->match_sets[i].ssid.ssid,
7544 nla_data(ssid), nla_len(ssid));
7545 request->match_sets[i].ssid.ssid_len =
7546 nla_len(ssid);
7547 }
7548 if (bssid) {
7549 if (nla_len(bssid) != ETH_ALEN) {
7550 err = -EINVAL;
7551 goto out_free;
7552 }
7553 memcpy(request->match_sets[i].bssid,
7554 nla_data(bssid), ETH_ALEN);
7555 }
7556
7557 /* special attribute - old implementation w/a */
7558 request->match_sets[i].rssi_thold =
7559 default_match_rssi;
7560 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7561 if (rssi)
7562 request->match_sets[i].rssi_thold =
7563 nla_get_s32(rssi);
7564 }
7565 i++;
7566 }
7567
7568 /* there was no other matchset, so the RSSI one is alone */
7569 if (i == 0 && n_match_sets)
7570 request->match_sets[0].rssi_thold = default_match_rssi;
7571
7572 request->min_rssi_thold = INT_MAX;
7573 for (i = 0; i < n_match_sets; i++)
7574 request->min_rssi_thold =
7575 min(request->match_sets[i].rssi_thold,
7576 request->min_rssi_thold);
7577 } else {
7578 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7579 }
7580
7581 if (ie_len) {
7582 request->ie_len = ie_len;
7583 memcpy((void *)request->ie,
7584 nla_data(attrs[NL80211_ATTR_IE]),
7585 request->ie_len);
7586 }
7587
7588 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7589 if (err)
7590 goto out_free;
7591
7592 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7593 request->delay =
7594 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7595
7596 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7597 request->relative_rssi = nla_get_s8(
7598 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7599 request->relative_rssi_set = true;
7600 }
7601
7602 if (request->relative_rssi_set &&
7603 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7604 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7605
7606 rssi_adjust = nla_data(
7607 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7608 request->rssi_adjust.band = rssi_adjust->band;
7609 request->rssi_adjust.delta = rssi_adjust->delta;
7610 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7611 err = -EINVAL;
7612 goto out_free;
7613 }
7614 }
7615
7616 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7617 if (err)
7618 goto out_free;
7619
7620 request->scan_start = jiffies;
7621
7622 return request;
7623
7624 out_free:
7625 kfree(request);
7626 return ERR_PTR(err);
7627 }
7628
7629 static int nl80211_start_sched_scan(struct sk_buff *skb,
7630 struct genl_info *info)
7631 {
7632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7633 struct net_device *dev = info->user_ptr[1];
7634 struct wireless_dev *wdev = dev->ieee80211_ptr;
7635 struct cfg80211_sched_scan_request *sched_scan_req;
7636 bool want_multi;
7637 int err;
7638
7639 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7640 return -EOPNOTSUPP;
7641
7642 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7643 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7644 if (err)
7645 return err;
7646
7647 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7648 info->attrs,
7649 rdev->wiphy.max_match_sets);
7650
7651 err = PTR_ERR_OR_ZERO(sched_scan_req);
7652 if (err)
7653 goto out_err;
7654
7655 /* leave request id zero for legacy request
7656 * or if driver does not support multi-scheduled scan
7657 */
7658 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7659 while (!sched_scan_req->reqid)
7660 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7661 }
7662
7663 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7664 if (err)
7665 goto out_free;
7666
7667 sched_scan_req->dev = dev;
7668 sched_scan_req->wiphy = &rdev->wiphy;
7669
7670 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7671 sched_scan_req->owner_nlportid = info->snd_portid;
7672
7673 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7674
7675 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7676 return 0;
7677
7678 out_free:
7679 kfree(sched_scan_req);
7680 out_err:
7681 return err;
7682 }
7683
7684 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7685 struct genl_info *info)
7686 {
7687 struct cfg80211_sched_scan_request *req;
7688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7689 u64 cookie;
7690
7691 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7692 return -EOPNOTSUPP;
7693
7694 if (info->attrs[NL80211_ATTR_COOKIE]) {
7695 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7696 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7697 }
7698
7699 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7700 struct cfg80211_sched_scan_request,
7701 list);
7702 if (!req || req->reqid ||
7703 (req->owner_nlportid &&
7704 req->owner_nlportid != info->snd_portid))
7705 return -ENOENT;
7706
7707 return cfg80211_stop_sched_scan_req(rdev, req, false);
7708 }
7709
7710 static int nl80211_start_radar_detection(struct sk_buff *skb,
7711 struct genl_info *info)
7712 {
7713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7714 struct net_device *dev = info->user_ptr[1];
7715 struct wireless_dev *wdev = dev->ieee80211_ptr;
7716 struct wiphy *wiphy = wdev->wiphy;
7717 struct cfg80211_chan_def chandef;
7718 enum nl80211_dfs_regions dfs_region;
7719 unsigned int cac_time_ms;
7720 int err;
7721
7722 dfs_region = reg_get_dfs_region(wiphy);
7723 if (dfs_region == NL80211_DFS_UNSET)
7724 return -EINVAL;
7725
7726 err = nl80211_parse_chandef(rdev, info, &chandef);
7727 if (err)
7728 return err;
7729
7730 if (netif_carrier_ok(dev))
7731 return -EBUSY;
7732
7733 if (wdev->cac_started)
7734 return -EBUSY;
7735
7736 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7737 if (err < 0)
7738 return err;
7739
7740 if (err == 0)
7741 return -EINVAL;
7742
7743 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7744 return -EINVAL;
7745
7746 /* CAC start is offloaded to HW and can't be started manually */
7747 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7748 return -EOPNOTSUPP;
7749
7750 if (!rdev->ops->start_radar_detection)
7751 return -EOPNOTSUPP;
7752
7753 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7754 if (WARN_ON(!cac_time_ms))
7755 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7756
7757 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7758 if (!err) {
7759 wdev->chandef = chandef;
7760 wdev->cac_started = true;
7761 wdev->cac_start_time = jiffies;
7762 wdev->cac_time_ms = cac_time_ms;
7763 }
7764 return err;
7765 }
7766
7767 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7768 {
7769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7770 struct net_device *dev = info->user_ptr[1];
7771 struct wireless_dev *wdev = dev->ieee80211_ptr;
7772 struct cfg80211_csa_settings params;
7773 /* csa_attrs is defined static to avoid waste of stack size - this
7774 * function is called under RTNL lock, so this should not be a problem.
7775 */
7776 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7777 int err;
7778 bool need_new_beacon = false;
7779 bool need_handle_dfs_flag = true;
7780 int len, i;
7781 u32 cs_count;
7782
7783 if (!rdev->ops->channel_switch ||
7784 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7785 return -EOPNOTSUPP;
7786
7787 switch (dev->ieee80211_ptr->iftype) {
7788 case NL80211_IFTYPE_AP:
7789 case NL80211_IFTYPE_P2P_GO:
7790 need_new_beacon = true;
7791 /* For all modes except AP the handle_dfs flag needs to be
7792 * supplied to tell the kernel that userspace will handle radar
7793 * events when they happen. Otherwise a switch to a channel
7794 * requiring DFS will be rejected.
7795 */
7796 need_handle_dfs_flag = false;
7797
7798 /* useless if AP is not running */
7799 if (!wdev->beacon_interval)
7800 return -ENOTCONN;
7801 break;
7802 case NL80211_IFTYPE_ADHOC:
7803 if (!wdev->ssid_len)
7804 return -ENOTCONN;
7805 break;
7806 case NL80211_IFTYPE_MESH_POINT:
7807 if (!wdev->mesh_id_len)
7808 return -ENOTCONN;
7809 break;
7810 default:
7811 return -EOPNOTSUPP;
7812 }
7813
7814 memset(&params, 0, sizeof(params));
7815
7816 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7817 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7818 return -EINVAL;
7819
7820 /* only important for AP, IBSS and mesh create IEs internally */
7821 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7822 return -EINVAL;
7823
7824 /* Even though the attribute is u32, the specification says
7825 * u8, so let's make sure we don't overflow.
7826 */
7827 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7828 if (cs_count > 255)
7829 return -EINVAL;
7830
7831 params.count = cs_count;
7832
7833 if (!need_new_beacon)
7834 goto skip_beacons;
7835
7836 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7837 if (err)
7838 return err;
7839
7840 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7841 info->attrs[NL80211_ATTR_CSA_IES],
7842 nl80211_policy, info->extack);
7843 if (err)
7844 return err;
7845
7846 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7847 if (err)
7848 return err;
7849
7850 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7851 return -EINVAL;
7852
7853 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7854 if (!len || (len % sizeof(u16)))
7855 return -EINVAL;
7856
7857 params.n_counter_offsets_beacon = len / sizeof(u16);
7858 if (rdev->wiphy.max_num_csa_counters &&
7859 (params.n_counter_offsets_beacon >
7860 rdev->wiphy.max_num_csa_counters))
7861 return -EINVAL;
7862
7863 params.counter_offsets_beacon =
7864 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7865
7866 /* sanity checks - counters should fit and be the same */
7867 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7868 u16 offset = params.counter_offsets_beacon[i];
7869
7870 if (offset >= params.beacon_csa.tail_len)
7871 return -EINVAL;
7872
7873 if (params.beacon_csa.tail[offset] != params.count)
7874 return -EINVAL;
7875 }
7876
7877 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7878 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7879 if (!len || (len % sizeof(u16)))
7880 return -EINVAL;
7881
7882 params.n_counter_offsets_presp = len / sizeof(u16);
7883 if (rdev->wiphy.max_num_csa_counters &&
7884 (params.n_counter_offsets_presp >
7885 rdev->wiphy.max_num_csa_counters))
7886 return -EINVAL;
7887
7888 params.counter_offsets_presp =
7889 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7890
7891 /* sanity checks - counters should fit and be the same */
7892 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7893 u16 offset = params.counter_offsets_presp[i];
7894
7895 if (offset >= params.beacon_csa.probe_resp_len)
7896 return -EINVAL;
7897
7898 if (params.beacon_csa.probe_resp[offset] !=
7899 params.count)
7900 return -EINVAL;
7901 }
7902 }
7903
7904 skip_beacons:
7905 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7906 if (err)
7907 return err;
7908
7909 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7910 wdev->iftype))
7911 return -EINVAL;
7912
7913 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7914 &params.chandef,
7915 wdev->iftype);
7916 if (err < 0)
7917 return err;
7918
7919 if (err > 0) {
7920 params.radar_required = true;
7921 if (need_handle_dfs_flag &&
7922 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7923 return -EINVAL;
7924 }
7925 }
7926
7927 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7928 params.block_tx = true;
7929
7930 wdev_lock(wdev);
7931 err = rdev_channel_switch(rdev, dev, &params);
7932 wdev_unlock(wdev);
7933
7934 return err;
7935 }
7936
7937 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7938 u32 seq, int flags,
7939 struct cfg80211_registered_device *rdev,
7940 struct wireless_dev *wdev,
7941 struct cfg80211_internal_bss *intbss)
7942 {
7943 struct cfg80211_bss *res = &intbss->pub;
7944 const struct cfg80211_bss_ies *ies;
7945 void *hdr;
7946 struct nlattr *bss;
7947
7948 ASSERT_WDEV_LOCK(wdev);
7949
7950 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7951 NL80211_CMD_NEW_SCAN_RESULTS);
7952 if (!hdr)
7953 return -1;
7954
7955 genl_dump_check_consistent(cb, hdr);
7956
7957 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7958 goto nla_put_failure;
7959 if (wdev->netdev &&
7960 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7961 goto nla_put_failure;
7962 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7963 NL80211_ATTR_PAD))
7964 goto nla_put_failure;
7965
7966 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7967 if (!bss)
7968 goto nla_put_failure;
7969 if ((!is_zero_ether_addr(res->bssid) &&
7970 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7971 goto nla_put_failure;
7972
7973 rcu_read_lock();
7974 /* indicate whether we have probe response data or not */
7975 if (rcu_access_pointer(res->proberesp_ies) &&
7976 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7977 goto fail_unlock_rcu;
7978
7979 /* this pointer prefers to be pointed to probe response data
7980 * but is always valid
7981 */
7982 ies = rcu_dereference(res->ies);
7983 if (ies) {
7984 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7985 NL80211_BSS_PAD))
7986 goto fail_unlock_rcu;
7987 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7988 ies->len, ies->data))
7989 goto fail_unlock_rcu;
7990 }
7991
7992 /* and this pointer is always (unless driver didn't know) beacon data */
7993 ies = rcu_dereference(res->beacon_ies);
7994 if (ies && ies->from_beacon) {
7995 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7996 NL80211_BSS_PAD))
7997 goto fail_unlock_rcu;
7998 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7999 ies->len, ies->data))
8000 goto fail_unlock_rcu;
8001 }
8002 rcu_read_unlock();
8003
8004 if (res->beacon_interval &&
8005 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8006 goto nla_put_failure;
8007 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8008 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8009 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8010 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8011 jiffies_to_msecs(jiffies - intbss->ts)))
8012 goto nla_put_failure;
8013
8014 if (intbss->parent_tsf &&
8015 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8016 intbss->parent_tsf, NL80211_BSS_PAD) ||
8017 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8018 intbss->parent_bssid)))
8019 goto nla_put_failure;
8020
8021 if (intbss->ts_boottime &&
8022 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8023 intbss->ts_boottime, NL80211_BSS_PAD))
8024 goto nla_put_failure;
8025
8026 if (!nl80211_put_signal(msg, intbss->pub.chains,
8027 intbss->pub.chain_signal,
8028 NL80211_BSS_CHAIN_SIGNAL))
8029 goto nla_put_failure;
8030
8031 switch (rdev->wiphy.signal_type) {
8032 case CFG80211_SIGNAL_TYPE_MBM:
8033 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8034 goto nla_put_failure;
8035 break;
8036 case CFG80211_SIGNAL_TYPE_UNSPEC:
8037 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8038 goto nla_put_failure;
8039 break;
8040 default:
8041 break;
8042 }
8043
8044 switch (wdev->iftype) {
8045 case NL80211_IFTYPE_P2P_CLIENT:
8046 case NL80211_IFTYPE_STATION:
8047 if (intbss == wdev->current_bss &&
8048 nla_put_u32(msg, NL80211_BSS_STATUS,
8049 NL80211_BSS_STATUS_ASSOCIATED))
8050 goto nla_put_failure;
8051 break;
8052 case NL80211_IFTYPE_ADHOC:
8053 if (intbss == wdev->current_bss &&
8054 nla_put_u32(msg, NL80211_BSS_STATUS,
8055 NL80211_BSS_STATUS_IBSS_JOINED))
8056 goto nla_put_failure;
8057 break;
8058 default:
8059 break;
8060 }
8061
8062 nla_nest_end(msg, bss);
8063
8064 genlmsg_end(msg, hdr);
8065 return 0;
8066
8067 fail_unlock_rcu:
8068 rcu_read_unlock();
8069 nla_put_failure:
8070 genlmsg_cancel(msg, hdr);
8071 return -EMSGSIZE;
8072 }
8073
8074 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8075 {
8076 struct cfg80211_registered_device *rdev;
8077 struct cfg80211_internal_bss *scan;
8078 struct wireless_dev *wdev;
8079 int start = cb->args[2], idx = 0;
8080 int err;
8081
8082 rtnl_lock();
8083 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8084 if (err) {
8085 rtnl_unlock();
8086 return err;
8087 }
8088
8089 wdev_lock(wdev);
8090 spin_lock_bh(&rdev->bss_lock);
8091
8092 /*
8093 * dump_scan will be called multiple times to break up the scan results
8094 * into multiple messages. It is unlikely that any more bss-es will be
8095 * expired after the first call, so only call only call this on the
8096 * first dump_scan invocation.
8097 */
8098 if (start == 0)
8099 cfg80211_bss_expire(rdev);
8100
8101 cb->seq = rdev->bss_generation;
8102
8103 list_for_each_entry(scan, &rdev->bss_list, list) {
8104 if (++idx <= start)
8105 continue;
8106 if (nl80211_send_bss(skb, cb,
8107 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8108 rdev, wdev, scan) < 0) {
8109 idx--;
8110 break;
8111 }
8112 }
8113
8114 spin_unlock_bh(&rdev->bss_lock);
8115 wdev_unlock(wdev);
8116
8117 cb->args[2] = idx;
8118 rtnl_unlock();
8119
8120 return skb->len;
8121 }
8122
8123 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8124 int flags, struct net_device *dev,
8125 bool allow_radio_stats,
8126 struct survey_info *survey)
8127 {
8128 void *hdr;
8129 struct nlattr *infoattr;
8130
8131 /* skip radio stats if userspace didn't request them */
8132 if (!survey->channel && !allow_radio_stats)
8133 return 0;
8134
8135 hdr = nl80211hdr_put(msg, portid, seq, flags,
8136 NL80211_CMD_NEW_SURVEY_RESULTS);
8137 if (!hdr)
8138 return -ENOMEM;
8139
8140 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8141 goto nla_put_failure;
8142
8143 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8144 if (!infoattr)
8145 goto nla_put_failure;
8146
8147 if (survey->channel &&
8148 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8149 survey->channel->center_freq))
8150 goto nla_put_failure;
8151
8152 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8153 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8154 goto nla_put_failure;
8155 if ((survey->filled & SURVEY_INFO_IN_USE) &&
8156 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8157 goto nla_put_failure;
8158 if ((survey->filled & SURVEY_INFO_TIME) &&
8159 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8160 survey->time, NL80211_SURVEY_INFO_PAD))
8161 goto nla_put_failure;
8162 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8163 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8164 survey->time_busy, NL80211_SURVEY_INFO_PAD))
8165 goto nla_put_failure;
8166 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8167 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8168 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8169 goto nla_put_failure;
8170 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8171 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8172 survey->time_rx, NL80211_SURVEY_INFO_PAD))
8173 goto nla_put_failure;
8174 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8175 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8176 survey->time_tx, NL80211_SURVEY_INFO_PAD))
8177 goto nla_put_failure;
8178 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8179 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8180 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8181 goto nla_put_failure;
8182
8183 nla_nest_end(msg, infoattr);
8184
8185 genlmsg_end(msg, hdr);
8186 return 0;
8187
8188 nla_put_failure:
8189 genlmsg_cancel(msg, hdr);
8190 return -EMSGSIZE;
8191 }
8192
8193 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8194 {
8195 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8196 struct survey_info survey;
8197 struct cfg80211_registered_device *rdev;
8198 struct wireless_dev *wdev;
8199 int survey_idx = cb->args[2];
8200 int res;
8201 bool radio_stats;
8202
8203 rtnl_lock();
8204 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8205 if (res)
8206 goto out_err;
8207
8208 /* prepare_wdev_dump parsed the attributes */
8209 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8210
8211 if (!wdev->netdev) {
8212 res = -EINVAL;
8213 goto out_err;
8214 }
8215
8216 if (!rdev->ops->dump_survey) {
8217 res = -EOPNOTSUPP;
8218 goto out_err;
8219 }
8220
8221 while (1) {
8222 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8223 if (res == -ENOENT)
8224 break;
8225 if (res)
8226 goto out_err;
8227
8228 /* don't send disabled channels, but do send non-channel data */
8229 if (survey.channel &&
8230 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8231 survey_idx++;
8232 continue;
8233 }
8234
8235 if (nl80211_send_survey(skb,
8236 NETLINK_CB(cb->skb).portid,
8237 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8238 wdev->netdev, radio_stats, &survey) < 0)
8239 goto out;
8240 survey_idx++;
8241 }
8242
8243 out:
8244 cb->args[2] = survey_idx;
8245 res = skb->len;
8246 out_err:
8247 rtnl_unlock();
8248 return res;
8249 }
8250
8251 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8252 {
8253 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8254 NL80211_WPA_VERSION_2));
8255 }
8256
8257 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8258 {
8259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8260 struct net_device *dev = info->user_ptr[1];
8261 struct ieee80211_channel *chan;
8262 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8263 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8264 enum nl80211_auth_type auth_type;
8265 struct key_parse key;
8266 bool local_state_change;
8267
8268 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8269 return -EINVAL;
8270
8271 if (!info->attrs[NL80211_ATTR_MAC])
8272 return -EINVAL;
8273
8274 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8275 return -EINVAL;
8276
8277 if (!info->attrs[NL80211_ATTR_SSID])
8278 return -EINVAL;
8279
8280 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8281 return -EINVAL;
8282
8283 err = nl80211_parse_key(info, &key);
8284 if (err)
8285 return err;
8286
8287 if (key.idx >= 0) {
8288 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8289 return -EINVAL;
8290 if (!key.p.key || !key.p.key_len)
8291 return -EINVAL;
8292 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8293 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8294 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8295 key.p.key_len != WLAN_KEY_LEN_WEP104))
8296 return -EINVAL;
8297 if (key.idx > 3)
8298 return -EINVAL;
8299 } else {
8300 key.p.key_len = 0;
8301 key.p.key = NULL;
8302 }
8303
8304 if (key.idx >= 0) {
8305 int i;
8306 bool ok = false;
8307
8308 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8309 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8310 ok = true;
8311 break;
8312 }
8313 }
8314 if (!ok)
8315 return -EINVAL;
8316 }
8317
8318 if (!rdev->ops->auth)
8319 return -EOPNOTSUPP;
8320
8321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8322 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8323 return -EOPNOTSUPP;
8324
8325 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8326 chan = nl80211_get_valid_chan(&rdev->wiphy,
8327 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8328 if (!chan)
8329 return -EINVAL;
8330
8331 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8332 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8333
8334 if (info->attrs[NL80211_ATTR_IE]) {
8335 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8336 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8337 }
8338
8339 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8340 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8341 return -EINVAL;
8342
8343 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8344 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8345 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8346 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8347 !info->attrs[NL80211_ATTR_AUTH_DATA])
8348 return -EINVAL;
8349
8350 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8351 if (auth_type != NL80211_AUTHTYPE_SAE &&
8352 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8353 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8354 auth_type != NL80211_AUTHTYPE_FILS_PK)
8355 return -EINVAL;
8356 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8357 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8358 /* need to include at least Auth Transaction and Status Code */
8359 if (auth_data_len < 4)
8360 return -EINVAL;
8361 }
8362
8363 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8364
8365 /*
8366 * Since we no longer track auth state, ignore
8367 * requests to only change local state.
8368 */
8369 if (local_state_change)
8370 return 0;
8371
8372 wdev_lock(dev->ieee80211_ptr);
8373 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8374 ssid, ssid_len, ie, ie_len,
8375 key.p.key, key.p.key_len, key.idx,
8376 auth_data, auth_data_len);
8377 wdev_unlock(dev->ieee80211_ptr);
8378 return err;
8379 }
8380
8381 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8382 struct genl_info *info)
8383 {
8384 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8385 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8386 return -EINVAL;
8387 }
8388
8389 if (!rdev->ops->tx_control_port ||
8390 !wiphy_ext_feature_isset(&rdev->wiphy,
8391 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8392 return -EOPNOTSUPP;
8393
8394 return 0;
8395 }
8396
8397 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8398 struct genl_info *info,
8399 struct cfg80211_crypto_settings *settings,
8400 int cipher_limit)
8401 {
8402 memset(settings, 0, sizeof(*settings));
8403
8404 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8405
8406 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8407 u16 proto;
8408
8409 proto = nla_get_u16(
8410 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8411 settings->control_port_ethertype = cpu_to_be16(proto);
8412 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8413 proto != ETH_P_PAE)
8414 return -EINVAL;
8415 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8416 settings->control_port_no_encrypt = true;
8417 } else
8418 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8419
8420 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8421 int r = validate_pae_over_nl80211(rdev, info);
8422
8423 if (r < 0)
8424 return r;
8425
8426 settings->control_port_over_nl80211 = true;
8427 }
8428
8429 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8430 void *data;
8431 int len, i;
8432
8433 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8434 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8435 settings->n_ciphers_pairwise = len / sizeof(u32);
8436
8437 if (len % sizeof(u32))
8438 return -EINVAL;
8439
8440 if (settings->n_ciphers_pairwise > cipher_limit)
8441 return -EINVAL;
8442
8443 memcpy(settings->ciphers_pairwise, data, len);
8444
8445 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8446 if (!cfg80211_supported_cipher_suite(
8447 &rdev->wiphy,
8448 settings->ciphers_pairwise[i]))
8449 return -EINVAL;
8450 }
8451
8452 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8453 settings->cipher_group =
8454 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8455 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8456 settings->cipher_group))
8457 return -EINVAL;
8458 }
8459
8460 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8461 settings->wpa_versions =
8462 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8463 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8464 return -EINVAL;
8465 }
8466
8467 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8468 void *data;
8469 int len;
8470
8471 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8472 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8473 settings->n_akm_suites = len / sizeof(u32);
8474
8475 if (len % sizeof(u32))
8476 return -EINVAL;
8477
8478 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8479 return -EINVAL;
8480
8481 memcpy(settings->akm_suites, data, len);
8482 }
8483
8484 if (info->attrs[NL80211_ATTR_PMK]) {
8485 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8486 return -EINVAL;
8487 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8488 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8489 return -EINVAL;
8490 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8491 }
8492
8493 return 0;
8494 }
8495
8496 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8497 {
8498 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8499 struct net_device *dev = info->user_ptr[1];
8500 struct ieee80211_channel *chan;
8501 struct cfg80211_assoc_request req = {};
8502 const u8 *bssid, *ssid;
8503 int err, ssid_len = 0;
8504
8505 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8506 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8507 return -EPERM;
8508
8509 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8510 return -EINVAL;
8511
8512 if (!info->attrs[NL80211_ATTR_MAC] ||
8513 !info->attrs[NL80211_ATTR_SSID] ||
8514 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8515 return -EINVAL;
8516
8517 if (!rdev->ops->assoc)
8518 return -EOPNOTSUPP;
8519
8520 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8521 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8522 return -EOPNOTSUPP;
8523
8524 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8525
8526 chan = nl80211_get_valid_chan(&rdev->wiphy,
8527 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8528 if (!chan)
8529 return -EINVAL;
8530
8531 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8532 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8533
8534 if (info->attrs[NL80211_ATTR_IE]) {
8535 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8536 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8537 }
8538
8539 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8540 enum nl80211_mfp mfp =
8541 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8542 if (mfp == NL80211_MFP_REQUIRED)
8543 req.use_mfp = true;
8544 else if (mfp != NL80211_MFP_NO)
8545 return -EINVAL;
8546 }
8547
8548 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8549 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8550
8551 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8552 req.flags |= ASSOC_REQ_DISABLE_HT;
8553
8554 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8555 memcpy(&req.ht_capa_mask,
8556 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8557 sizeof(req.ht_capa_mask));
8558
8559 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8560 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8561 return -EINVAL;
8562 memcpy(&req.ht_capa,
8563 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8564 sizeof(req.ht_capa));
8565 }
8566
8567 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8568 req.flags |= ASSOC_REQ_DISABLE_VHT;
8569
8570 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8571 memcpy(&req.vht_capa_mask,
8572 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8573 sizeof(req.vht_capa_mask));
8574
8575 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8576 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8577 return -EINVAL;
8578 memcpy(&req.vht_capa,
8579 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8580 sizeof(req.vht_capa));
8581 }
8582
8583 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8584 if (!((rdev->wiphy.features &
8585 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8586 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8587 !wiphy_ext_feature_isset(&rdev->wiphy,
8588 NL80211_EXT_FEATURE_RRM))
8589 return -EINVAL;
8590 req.flags |= ASSOC_REQ_USE_RRM;
8591 }
8592
8593 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8594 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8595 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8596 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8597 return -EINVAL;
8598 req.fils_nonces =
8599 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8600 }
8601
8602 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8603 if (!err) {
8604 wdev_lock(dev->ieee80211_ptr);
8605
8606 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8607 ssid, ssid_len, &req);
8608
8609 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8610 dev->ieee80211_ptr->conn_owner_nlportid =
8611 info->snd_portid;
8612 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8613 bssid, ETH_ALEN);
8614 }
8615
8616 wdev_unlock(dev->ieee80211_ptr);
8617 }
8618
8619 return err;
8620 }
8621
8622 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8623 {
8624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8625 struct net_device *dev = info->user_ptr[1];
8626 const u8 *ie = NULL, *bssid;
8627 int ie_len = 0, err;
8628 u16 reason_code;
8629 bool local_state_change;
8630
8631 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8632 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8633 return -EPERM;
8634
8635 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8636 return -EINVAL;
8637
8638 if (!info->attrs[NL80211_ATTR_MAC])
8639 return -EINVAL;
8640
8641 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8642 return -EINVAL;
8643
8644 if (!rdev->ops->deauth)
8645 return -EOPNOTSUPP;
8646
8647 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8648 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8649 return -EOPNOTSUPP;
8650
8651 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8652
8653 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8654 if (reason_code == 0) {
8655 /* Reason Code 0 is reserved */
8656 return -EINVAL;
8657 }
8658
8659 if (info->attrs[NL80211_ATTR_IE]) {
8660 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8661 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8662 }
8663
8664 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8665
8666 wdev_lock(dev->ieee80211_ptr);
8667 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8668 local_state_change);
8669 wdev_unlock(dev->ieee80211_ptr);
8670 return err;
8671 }
8672
8673 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8674 {
8675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8676 struct net_device *dev = info->user_ptr[1];
8677 const u8 *ie = NULL, *bssid;
8678 int ie_len = 0, err;
8679 u16 reason_code;
8680 bool local_state_change;
8681
8682 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8683 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8684 return -EPERM;
8685
8686 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8687 return -EINVAL;
8688
8689 if (!info->attrs[NL80211_ATTR_MAC])
8690 return -EINVAL;
8691
8692 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8693 return -EINVAL;
8694
8695 if (!rdev->ops->disassoc)
8696 return -EOPNOTSUPP;
8697
8698 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8699 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8700 return -EOPNOTSUPP;
8701
8702 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8703
8704 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8705 if (reason_code == 0) {
8706 /* Reason Code 0 is reserved */
8707 return -EINVAL;
8708 }
8709
8710 if (info->attrs[NL80211_ATTR_IE]) {
8711 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8712 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8713 }
8714
8715 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8716
8717 wdev_lock(dev->ieee80211_ptr);
8718 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8719 local_state_change);
8720 wdev_unlock(dev->ieee80211_ptr);
8721 return err;
8722 }
8723
8724 static bool
8725 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8726 int mcast_rate[NUM_NL80211_BANDS],
8727 int rateval)
8728 {
8729 struct wiphy *wiphy = &rdev->wiphy;
8730 bool found = false;
8731 int band, i;
8732
8733 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8734 struct ieee80211_supported_band *sband;
8735
8736 sband = wiphy->bands[band];
8737 if (!sband)
8738 continue;
8739
8740 for (i = 0; i < sband->n_bitrates; i++) {
8741 if (sband->bitrates[i].bitrate == rateval) {
8742 mcast_rate[band] = i + 1;
8743 found = true;
8744 break;
8745 }
8746 }
8747 }
8748
8749 return found;
8750 }
8751
8752 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8753 {
8754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8755 struct net_device *dev = info->user_ptr[1];
8756 struct cfg80211_ibss_params ibss;
8757 struct wiphy *wiphy;
8758 struct cfg80211_cached_keys *connkeys = NULL;
8759 int err;
8760
8761 memset(&ibss, 0, sizeof(ibss));
8762
8763 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8764 return -EINVAL;
8765
8766 if (!info->attrs[NL80211_ATTR_SSID] ||
8767 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8768 return -EINVAL;
8769
8770 ibss.beacon_interval = 100;
8771
8772 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8773 ibss.beacon_interval =
8774 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8775
8776 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8777 ibss.beacon_interval);
8778 if (err)
8779 return err;
8780
8781 if (!rdev->ops->join_ibss)
8782 return -EOPNOTSUPP;
8783
8784 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8785 return -EOPNOTSUPP;
8786
8787 wiphy = &rdev->wiphy;
8788
8789 if (info->attrs[NL80211_ATTR_MAC]) {
8790 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8791
8792 if (!is_valid_ether_addr(ibss.bssid))
8793 return -EINVAL;
8794 }
8795 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8796 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8797
8798 if (info->attrs[NL80211_ATTR_IE]) {
8799 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8800 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8801 }
8802
8803 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8804 if (err)
8805 return err;
8806
8807 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8808 NL80211_IFTYPE_ADHOC))
8809 return -EINVAL;
8810
8811 switch (ibss.chandef.width) {
8812 case NL80211_CHAN_WIDTH_5:
8813 case NL80211_CHAN_WIDTH_10:
8814 case NL80211_CHAN_WIDTH_20_NOHT:
8815 break;
8816 case NL80211_CHAN_WIDTH_20:
8817 case NL80211_CHAN_WIDTH_40:
8818 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8819 return -EINVAL;
8820 break;
8821 case NL80211_CHAN_WIDTH_80:
8822 case NL80211_CHAN_WIDTH_80P80:
8823 case NL80211_CHAN_WIDTH_160:
8824 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8825 return -EINVAL;
8826 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8827 NL80211_EXT_FEATURE_VHT_IBSS))
8828 return -EINVAL;
8829 break;
8830 default:
8831 return -EINVAL;
8832 }
8833
8834 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8835 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8836
8837 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8838 u8 *rates =
8839 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8840 int n_rates =
8841 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8842 struct ieee80211_supported_band *sband =
8843 wiphy->bands[ibss.chandef.chan->band];
8844
8845 err = ieee80211_get_ratemask(sband, rates, n_rates,
8846 &ibss.basic_rates);
8847 if (err)
8848 return err;
8849 }
8850
8851 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8852 memcpy(&ibss.ht_capa_mask,
8853 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8854 sizeof(ibss.ht_capa_mask));
8855
8856 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8857 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8858 return -EINVAL;
8859 memcpy(&ibss.ht_capa,
8860 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8861 sizeof(ibss.ht_capa));
8862 }
8863
8864 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8865 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8866 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8867 return -EINVAL;
8868
8869 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8870 bool no_ht = false;
8871
8872 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8873 if (IS_ERR(connkeys))
8874 return PTR_ERR(connkeys);
8875
8876 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8877 no_ht) {
8878 kzfree(connkeys);
8879 return -EINVAL;
8880 }
8881 }
8882
8883 ibss.control_port =
8884 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8885
8886 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8887 int r = validate_pae_over_nl80211(rdev, info);
8888
8889 if (r < 0)
8890 return r;
8891
8892 ibss.control_port_over_nl80211 = true;
8893 }
8894
8895 ibss.userspace_handles_dfs =
8896 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8897
8898 wdev_lock(dev->ieee80211_ptr);
8899 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8900 if (err)
8901 kzfree(connkeys);
8902 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8903 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8904 wdev_unlock(dev->ieee80211_ptr);
8905
8906 return err;
8907 }
8908
8909 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8910 {
8911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8912 struct net_device *dev = info->user_ptr[1];
8913
8914 if (!rdev->ops->leave_ibss)
8915 return -EOPNOTSUPP;
8916
8917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8918 return -EOPNOTSUPP;
8919
8920 return cfg80211_leave_ibss(rdev, dev, false);
8921 }
8922
8923 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8924 {
8925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8926 struct net_device *dev = info->user_ptr[1];
8927 int mcast_rate[NUM_NL80211_BANDS];
8928 u32 nla_rate;
8929 int err;
8930
8931 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8932 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8933 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8934 return -EOPNOTSUPP;
8935
8936 if (!rdev->ops->set_mcast_rate)
8937 return -EOPNOTSUPP;
8938
8939 memset(mcast_rate, 0, sizeof(mcast_rate));
8940
8941 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8942 return -EINVAL;
8943
8944 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8945 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8946 return -EINVAL;
8947
8948 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8949
8950 return err;
8951 }
8952
8953 static struct sk_buff *
8954 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8955 struct wireless_dev *wdev, int approxlen,
8956 u32 portid, u32 seq, enum nl80211_commands cmd,
8957 enum nl80211_attrs attr,
8958 const struct nl80211_vendor_cmd_info *info,
8959 gfp_t gfp)
8960 {
8961 struct sk_buff *skb;
8962 void *hdr;
8963 struct nlattr *data;
8964
8965 skb = nlmsg_new(approxlen + 100, gfp);
8966 if (!skb)
8967 return NULL;
8968
8969 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8970 if (!hdr) {
8971 kfree_skb(skb);
8972 return NULL;
8973 }
8974
8975 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8976 goto nla_put_failure;
8977
8978 if (info) {
8979 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8980 info->vendor_id))
8981 goto nla_put_failure;
8982 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8983 info->subcmd))
8984 goto nla_put_failure;
8985 }
8986
8987 if (wdev) {
8988 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8989 wdev_id(wdev), NL80211_ATTR_PAD))
8990 goto nla_put_failure;
8991 if (wdev->netdev &&
8992 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8993 wdev->netdev->ifindex))
8994 goto nla_put_failure;
8995 }
8996
8997 data = nla_nest_start(skb, attr);
8998 if (!data)
8999 goto nla_put_failure;
9000
9001 ((void **)skb->cb)[0] = rdev;
9002 ((void **)skb->cb)[1] = hdr;
9003 ((void **)skb->cb)[2] = data;
9004
9005 return skb;
9006
9007 nla_put_failure:
9008 kfree_skb(skb);
9009 return NULL;
9010 }
9011
9012 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9013 struct wireless_dev *wdev,
9014 enum nl80211_commands cmd,
9015 enum nl80211_attrs attr,
9016 int vendor_event_idx,
9017 int approxlen, gfp_t gfp)
9018 {
9019 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9020 const struct nl80211_vendor_cmd_info *info;
9021
9022 switch (cmd) {
9023 case NL80211_CMD_TESTMODE:
9024 if (WARN_ON(vendor_event_idx != -1))
9025 return NULL;
9026 info = NULL;
9027 break;
9028 case NL80211_CMD_VENDOR:
9029 if (WARN_ON(vendor_event_idx < 0 ||
9030 vendor_event_idx >= wiphy->n_vendor_events))
9031 return NULL;
9032 info = &wiphy->vendor_events[vendor_event_idx];
9033 break;
9034 default:
9035 WARN_ON(1);
9036 return NULL;
9037 }
9038
9039 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9040 cmd, attr, info, gfp);
9041 }
9042 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9043
9044 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9045 {
9046 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9047 void *hdr = ((void **)skb->cb)[1];
9048 struct nlattr *data = ((void **)skb->cb)[2];
9049 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9050
9051 /* clear CB data for netlink core to own from now on */
9052 memset(skb->cb, 0, sizeof(skb->cb));
9053
9054 nla_nest_end(skb, data);
9055 genlmsg_end(skb, hdr);
9056
9057 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9058 mcgrp = NL80211_MCGRP_VENDOR;
9059
9060 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9061 mcgrp, gfp);
9062 }
9063 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9064
9065 #ifdef CONFIG_NL80211_TESTMODE
9066 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9067 {
9068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9069 struct wireless_dev *wdev =
9070 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9071 int err;
9072
9073 if (!rdev->ops->testmode_cmd)
9074 return -EOPNOTSUPP;
9075
9076 if (IS_ERR(wdev)) {
9077 err = PTR_ERR(wdev);
9078 if (err != -EINVAL)
9079 return err;
9080 wdev = NULL;
9081 } else if (wdev->wiphy != &rdev->wiphy) {
9082 return -EINVAL;
9083 }
9084
9085 if (!info->attrs[NL80211_ATTR_TESTDATA])
9086 return -EINVAL;
9087
9088 rdev->cur_cmd_info = info;
9089 err = rdev_testmode_cmd(rdev, wdev,
9090 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9091 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9092 rdev->cur_cmd_info = NULL;
9093
9094 return err;
9095 }
9096
9097 static int nl80211_testmode_dump(struct sk_buff *skb,
9098 struct netlink_callback *cb)
9099 {
9100 struct cfg80211_registered_device *rdev;
9101 int err;
9102 long phy_idx;
9103 void *data = NULL;
9104 int data_len = 0;
9105
9106 rtnl_lock();
9107
9108 if (cb->args[0]) {
9109 /*
9110 * 0 is a valid index, but not valid for args[0],
9111 * so we need to offset by 1.
9112 */
9113 phy_idx = cb->args[0] - 1;
9114
9115 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9116 if (!rdev) {
9117 err = -ENOENT;
9118 goto out_err;
9119 }
9120 } else {
9121 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9122
9123 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9124 attrbuf, nl80211_fam.maxattr,
9125 nl80211_policy, NULL);
9126 if (err)
9127 goto out_err;
9128
9129 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9130 if (IS_ERR(rdev)) {
9131 err = PTR_ERR(rdev);
9132 goto out_err;
9133 }
9134 phy_idx = rdev->wiphy_idx;
9135
9136 if (attrbuf[NL80211_ATTR_TESTDATA])
9137 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9138 }
9139
9140 if (cb->args[1]) {
9141 data = nla_data((void *)cb->args[1]);
9142 data_len = nla_len((void *)cb->args[1]);
9143 }
9144
9145 if (!rdev->ops->testmode_dump) {
9146 err = -EOPNOTSUPP;
9147 goto out_err;
9148 }
9149
9150 while (1) {
9151 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9152 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9153 NL80211_CMD_TESTMODE);
9154 struct nlattr *tmdata;
9155
9156 if (!hdr)
9157 break;
9158
9159 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9160 genlmsg_cancel(skb, hdr);
9161 break;
9162 }
9163
9164 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9165 if (!tmdata) {
9166 genlmsg_cancel(skb, hdr);
9167 break;
9168 }
9169 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9170 nla_nest_end(skb, tmdata);
9171
9172 if (err == -ENOBUFS || err == -ENOENT) {
9173 genlmsg_cancel(skb, hdr);
9174 break;
9175 } else if (err) {
9176 genlmsg_cancel(skb, hdr);
9177 goto out_err;
9178 }
9179
9180 genlmsg_end(skb, hdr);
9181 }
9182
9183 err = skb->len;
9184 /* see above */
9185 cb->args[0] = phy_idx + 1;
9186 out_err:
9187 rtnl_unlock();
9188 return err;
9189 }
9190 #endif
9191
9192 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9193 {
9194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9195 struct net_device *dev = info->user_ptr[1];
9196 struct cfg80211_connect_params connect;
9197 struct wiphy *wiphy;
9198 struct cfg80211_cached_keys *connkeys = NULL;
9199 int err;
9200
9201 memset(&connect, 0, sizeof(connect));
9202
9203 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9204 return -EINVAL;
9205
9206 if (!info->attrs[NL80211_ATTR_SSID] ||
9207 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9208 return -EINVAL;
9209
9210 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9211 connect.auth_type =
9212 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9213 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9214 NL80211_CMD_CONNECT))
9215 return -EINVAL;
9216 } else
9217 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9218
9219 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9220
9221 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9222 !wiphy_ext_feature_isset(&rdev->wiphy,
9223 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9224 return -EINVAL;
9225 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9226
9227 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9228 NL80211_MAX_NR_CIPHER_SUITES);
9229 if (err)
9230 return err;
9231
9232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9233 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9234 return -EOPNOTSUPP;
9235
9236 wiphy = &rdev->wiphy;
9237
9238 connect.bg_scan_period = -1;
9239 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9240 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9241 connect.bg_scan_period =
9242 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9243 }
9244
9245 if (info->attrs[NL80211_ATTR_MAC])
9246 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9247 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9248 connect.bssid_hint =
9249 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9250 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9251 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9252
9253 if (info->attrs[NL80211_ATTR_IE]) {
9254 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9255 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9256 }
9257
9258 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9259 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9260 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9261 !wiphy_ext_feature_isset(&rdev->wiphy,
9262 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9263 return -EOPNOTSUPP;
9264
9265 if (connect.mfp != NL80211_MFP_REQUIRED &&
9266 connect.mfp != NL80211_MFP_NO &&
9267 connect.mfp != NL80211_MFP_OPTIONAL)
9268 return -EINVAL;
9269 } else {
9270 connect.mfp = NL80211_MFP_NO;
9271 }
9272
9273 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9274 connect.prev_bssid =
9275 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9276
9277 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9278 connect.channel = nl80211_get_valid_chan(
9279 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9280 if (!connect.channel)
9281 return -EINVAL;
9282 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9283 connect.channel_hint = nl80211_get_valid_chan(
9284 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9285 if (!connect.channel_hint)
9286 return -EINVAL;
9287 }
9288
9289 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9290 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9291 if (IS_ERR(connkeys))
9292 return PTR_ERR(connkeys);
9293 }
9294
9295 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9296 connect.flags |= ASSOC_REQ_DISABLE_HT;
9297
9298 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9299 memcpy(&connect.ht_capa_mask,
9300 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9301 sizeof(connect.ht_capa_mask));
9302
9303 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9304 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9305 kzfree(connkeys);
9306 return -EINVAL;
9307 }
9308 memcpy(&connect.ht_capa,
9309 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9310 sizeof(connect.ht_capa));
9311 }
9312
9313 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9314 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9315
9316 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9317 memcpy(&connect.vht_capa_mask,
9318 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9319 sizeof(connect.vht_capa_mask));
9320
9321 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9322 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9323 kzfree(connkeys);
9324 return -EINVAL;
9325 }
9326 memcpy(&connect.vht_capa,
9327 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9328 sizeof(connect.vht_capa));
9329 }
9330
9331 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9332 if (!((rdev->wiphy.features &
9333 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9334 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9335 !wiphy_ext_feature_isset(&rdev->wiphy,
9336 NL80211_EXT_FEATURE_RRM)) {
9337 kzfree(connkeys);
9338 return -EINVAL;
9339 }
9340 connect.flags |= ASSOC_REQ_USE_RRM;
9341 }
9342
9343 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9344 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9345 kzfree(connkeys);
9346 return -EOPNOTSUPP;
9347 }
9348
9349 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9350 /* bss selection makes no sense if bssid is set */
9351 if (connect.bssid) {
9352 kzfree(connkeys);
9353 return -EINVAL;
9354 }
9355
9356 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9357 wiphy, &connect.bss_select);
9358 if (err) {
9359 kzfree(connkeys);
9360 return err;
9361 }
9362 }
9363
9364 if (wiphy_ext_feature_isset(&rdev->wiphy,
9365 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9366 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9367 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9368 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9369 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9370 connect.fils_erp_username =
9371 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9372 connect.fils_erp_username_len =
9373 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9374 connect.fils_erp_realm =
9375 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9376 connect.fils_erp_realm_len =
9377 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9378 connect.fils_erp_next_seq_num =
9379 nla_get_u16(
9380 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9381 connect.fils_erp_rrk =
9382 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9383 connect.fils_erp_rrk_len =
9384 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9385 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9386 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9387 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9388 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9389 kzfree(connkeys);
9390 return -EINVAL;
9391 }
9392
9393 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9394 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9395 kzfree(connkeys);
9396 GENL_SET_ERR_MSG(info,
9397 "external auth requires connection ownership");
9398 return -EINVAL;
9399 }
9400 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9401 }
9402
9403 wdev_lock(dev->ieee80211_ptr);
9404
9405 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9406 connect.prev_bssid);
9407 if (err)
9408 kzfree(connkeys);
9409
9410 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9411 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9412 if (connect.bssid)
9413 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9414 connect.bssid, ETH_ALEN);
9415 else
9416 memset(dev->ieee80211_ptr->disconnect_bssid,
9417 0, ETH_ALEN);
9418 }
9419
9420 wdev_unlock(dev->ieee80211_ptr);
9421
9422 return err;
9423 }
9424
9425 static int nl80211_update_connect_params(struct sk_buff *skb,
9426 struct genl_info *info)
9427 {
9428 struct cfg80211_connect_params connect = {};
9429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9430 struct net_device *dev = info->user_ptr[1];
9431 struct wireless_dev *wdev = dev->ieee80211_ptr;
9432 bool fils_sk_offload;
9433 u32 auth_type;
9434 u32 changed = 0;
9435 int ret;
9436
9437 if (!rdev->ops->update_connect_params)
9438 return -EOPNOTSUPP;
9439
9440 if (info->attrs[NL80211_ATTR_IE]) {
9441 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9442 return -EINVAL;
9443 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9444 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9445 changed |= UPDATE_ASSOC_IES;
9446 }
9447
9448 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9449 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9450
9451 /*
9452 * when driver supports fils-sk offload all attributes must be
9453 * provided. So the else covers "fils-sk-not-all" and
9454 * "no-fils-sk-any".
9455 */
9456 if (fils_sk_offload &&
9457 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9458 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9459 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9460 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9461 connect.fils_erp_username =
9462 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9463 connect.fils_erp_username_len =
9464 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9465 connect.fils_erp_realm =
9466 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9467 connect.fils_erp_realm_len =
9468 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9469 connect.fils_erp_next_seq_num =
9470 nla_get_u16(
9471 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9472 connect.fils_erp_rrk =
9473 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9474 connect.fils_erp_rrk_len =
9475 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9476 changed |= UPDATE_FILS_ERP_INFO;
9477 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9478 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9479 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9480 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9481 return -EINVAL;
9482 }
9483
9484 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9485 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9486 if (!nl80211_valid_auth_type(rdev, auth_type,
9487 NL80211_CMD_CONNECT))
9488 return -EINVAL;
9489
9490 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9491 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9492 return -EINVAL;
9493
9494 connect.auth_type = auth_type;
9495 changed |= UPDATE_AUTH_TYPE;
9496 }
9497
9498 wdev_lock(dev->ieee80211_ptr);
9499 if (!wdev->current_bss)
9500 ret = -ENOLINK;
9501 else
9502 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9503 wdev_unlock(dev->ieee80211_ptr);
9504
9505 return ret;
9506 }
9507
9508 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9509 {
9510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511 struct net_device *dev = info->user_ptr[1];
9512 u16 reason;
9513 int ret;
9514
9515 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9516 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9517 return -EPERM;
9518
9519 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9520 reason = WLAN_REASON_DEAUTH_LEAVING;
9521 else
9522 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9523
9524 if (reason == 0)
9525 return -EINVAL;
9526
9527 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9528 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9529 return -EOPNOTSUPP;
9530
9531 wdev_lock(dev->ieee80211_ptr);
9532 ret = cfg80211_disconnect(rdev, dev, reason, true);
9533 wdev_unlock(dev->ieee80211_ptr);
9534 return ret;
9535 }
9536
9537 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9538 {
9539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9540 struct net *net;
9541 int err;
9542
9543 if (info->attrs[NL80211_ATTR_PID]) {
9544 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9545
9546 net = get_net_ns_by_pid(pid);
9547 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9548 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9549
9550 net = get_net_ns_by_fd(fd);
9551 } else {
9552 return -EINVAL;
9553 }
9554
9555 if (IS_ERR(net))
9556 return PTR_ERR(net);
9557
9558 err = 0;
9559
9560 /* check if anything to do */
9561 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9562 err = cfg80211_switch_netns(rdev, net);
9563
9564 put_net(net);
9565 return err;
9566 }
9567
9568 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9569 {
9570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9571 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9572 struct cfg80211_pmksa *pmksa) = NULL;
9573 struct net_device *dev = info->user_ptr[1];
9574 struct cfg80211_pmksa pmksa;
9575
9576 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9577
9578 if (!info->attrs[NL80211_ATTR_PMKID])
9579 return -EINVAL;
9580
9581 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9582
9583 if (info->attrs[NL80211_ATTR_MAC]) {
9584 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9585 } else if (info->attrs[NL80211_ATTR_SSID] &&
9586 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9587 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9588 info->attrs[NL80211_ATTR_PMK])) {
9589 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9590 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9591 pmksa.cache_id =
9592 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9593 } else {
9594 return -EINVAL;
9595 }
9596 if (info->attrs[NL80211_ATTR_PMK]) {
9597 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9598 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9599 }
9600
9601 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9602 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9603 return -EOPNOTSUPP;
9604
9605 switch (info->genlhdr->cmd) {
9606 case NL80211_CMD_SET_PMKSA:
9607 rdev_ops = rdev->ops->set_pmksa;
9608 break;
9609 case NL80211_CMD_DEL_PMKSA:
9610 rdev_ops = rdev->ops->del_pmksa;
9611 break;
9612 default:
9613 WARN_ON(1);
9614 break;
9615 }
9616
9617 if (!rdev_ops)
9618 return -EOPNOTSUPP;
9619
9620 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9621 }
9622
9623 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9624 {
9625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9626 struct net_device *dev = info->user_ptr[1];
9627
9628 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9630 return -EOPNOTSUPP;
9631
9632 if (!rdev->ops->flush_pmksa)
9633 return -EOPNOTSUPP;
9634
9635 return rdev_flush_pmksa(rdev, dev);
9636 }
9637
9638 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9639 {
9640 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9641 struct net_device *dev = info->user_ptr[1];
9642 u8 action_code, dialog_token;
9643 u32 peer_capability = 0;
9644 u16 status_code;
9645 u8 *peer;
9646 bool initiator;
9647
9648 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9649 !rdev->ops->tdls_mgmt)
9650 return -EOPNOTSUPP;
9651
9652 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9653 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9654 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9655 !info->attrs[NL80211_ATTR_IE] ||
9656 !info->attrs[NL80211_ATTR_MAC])
9657 return -EINVAL;
9658
9659 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9660 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9661 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9662 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9663 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9664 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9665 peer_capability =
9666 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9667
9668 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9669 dialog_token, status_code, peer_capability,
9670 initiator,
9671 nla_data(info->attrs[NL80211_ATTR_IE]),
9672 nla_len(info->attrs[NL80211_ATTR_IE]));
9673 }
9674
9675 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9676 {
9677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9678 struct net_device *dev = info->user_ptr[1];
9679 enum nl80211_tdls_operation operation;
9680 u8 *peer;
9681
9682 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9683 !rdev->ops->tdls_oper)
9684 return -EOPNOTSUPP;
9685
9686 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9687 !info->attrs[NL80211_ATTR_MAC])
9688 return -EINVAL;
9689
9690 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9691 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9692
9693 return rdev_tdls_oper(rdev, dev, peer, operation);
9694 }
9695
9696 static int nl80211_remain_on_channel(struct sk_buff *skb,
9697 struct genl_info *info)
9698 {
9699 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9700 struct wireless_dev *wdev = info->user_ptr[1];
9701 struct cfg80211_chan_def chandef;
9702 const struct cfg80211_chan_def *compat_chandef;
9703 struct sk_buff *msg;
9704 void *hdr;
9705 u64 cookie;
9706 u32 duration;
9707 int err;
9708
9709 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9710 !info->attrs[NL80211_ATTR_DURATION])
9711 return -EINVAL;
9712
9713 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9714
9715 if (!rdev->ops->remain_on_channel ||
9716 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9717 return -EOPNOTSUPP;
9718
9719 /*
9720 * We should be on that channel for at least a minimum amount of
9721 * time (10ms) but no longer than the driver supports.
9722 */
9723 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9724 duration > rdev->wiphy.max_remain_on_channel_duration)
9725 return -EINVAL;
9726
9727 err = nl80211_parse_chandef(rdev, info, &chandef);
9728 if (err)
9729 return err;
9730
9731 wdev_lock(wdev);
9732 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9733 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9734 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9735 &chandef);
9736 if (compat_chandef != &chandef) {
9737 wdev_unlock(wdev);
9738 return -EBUSY;
9739 }
9740 }
9741 wdev_unlock(wdev);
9742
9743 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9744 if (!msg)
9745 return -ENOMEM;
9746
9747 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9748 NL80211_CMD_REMAIN_ON_CHANNEL);
9749 if (!hdr) {
9750 err = -ENOBUFS;
9751 goto free_msg;
9752 }
9753
9754 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9755 duration, &cookie);
9756
9757 if (err)
9758 goto free_msg;
9759
9760 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9761 NL80211_ATTR_PAD))
9762 goto nla_put_failure;
9763
9764 genlmsg_end(msg, hdr);
9765
9766 return genlmsg_reply(msg, info);
9767
9768 nla_put_failure:
9769 err = -ENOBUFS;
9770 free_msg:
9771 nlmsg_free(msg);
9772 return err;
9773 }
9774
9775 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9776 struct genl_info *info)
9777 {
9778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9779 struct wireless_dev *wdev = info->user_ptr[1];
9780 u64 cookie;
9781
9782 if (!info->attrs[NL80211_ATTR_COOKIE])
9783 return -EINVAL;
9784
9785 if (!rdev->ops->cancel_remain_on_channel)
9786 return -EOPNOTSUPP;
9787
9788 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9789
9790 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9791 }
9792
9793 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9794 struct genl_info *info)
9795 {
9796 struct cfg80211_bitrate_mask mask;
9797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9798 struct net_device *dev = info->user_ptr[1];
9799 int err;
9800
9801 if (!rdev->ops->set_bitrate_mask)
9802 return -EOPNOTSUPP;
9803
9804 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9805 if (err)
9806 return err;
9807
9808 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9809 }
9810
9811 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9812 {
9813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814 struct wireless_dev *wdev = info->user_ptr[1];
9815 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9816
9817 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9818 return -EINVAL;
9819
9820 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9821 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9822
9823 switch (wdev->iftype) {
9824 case NL80211_IFTYPE_STATION:
9825 case NL80211_IFTYPE_ADHOC:
9826 case NL80211_IFTYPE_P2P_CLIENT:
9827 case NL80211_IFTYPE_AP:
9828 case NL80211_IFTYPE_AP_VLAN:
9829 case NL80211_IFTYPE_MESH_POINT:
9830 case NL80211_IFTYPE_P2P_GO:
9831 case NL80211_IFTYPE_P2P_DEVICE:
9832 break;
9833 case NL80211_IFTYPE_NAN:
9834 default:
9835 return -EOPNOTSUPP;
9836 }
9837
9838 /* not much point in registering if we can't reply */
9839 if (!rdev->ops->mgmt_tx)
9840 return -EOPNOTSUPP;
9841
9842 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9843 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9844 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9845 }
9846
9847 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9848 {
9849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9850 struct wireless_dev *wdev = info->user_ptr[1];
9851 struct cfg80211_chan_def chandef;
9852 int err;
9853 void *hdr = NULL;
9854 u64 cookie;
9855 struct sk_buff *msg = NULL;
9856 struct cfg80211_mgmt_tx_params params = {
9857 .dont_wait_for_ack =
9858 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9859 };
9860
9861 if (!info->attrs[NL80211_ATTR_FRAME])
9862 return -EINVAL;
9863
9864 if (!rdev->ops->mgmt_tx)
9865 return -EOPNOTSUPP;
9866
9867 switch (wdev->iftype) {
9868 case NL80211_IFTYPE_P2P_DEVICE:
9869 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9870 return -EINVAL;
9871 case NL80211_IFTYPE_STATION:
9872 case NL80211_IFTYPE_ADHOC:
9873 case NL80211_IFTYPE_P2P_CLIENT:
9874 case NL80211_IFTYPE_AP:
9875 case NL80211_IFTYPE_AP_VLAN:
9876 case NL80211_IFTYPE_MESH_POINT:
9877 case NL80211_IFTYPE_P2P_GO:
9878 break;
9879 case NL80211_IFTYPE_NAN:
9880 default:
9881 return -EOPNOTSUPP;
9882 }
9883
9884 if (info->attrs[NL80211_ATTR_DURATION]) {
9885 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9886 return -EINVAL;
9887 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9888
9889 /*
9890 * We should wait on the channel for at least a minimum amount
9891 * of time (10ms) but no longer than the driver supports.
9892 */
9893 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9894 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9895 return -EINVAL;
9896 }
9897
9898 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9899
9900 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9901 return -EINVAL;
9902
9903 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9904
9905 /* get the channel if any has been specified, otherwise pass NULL to
9906 * the driver. The latter will use the current one
9907 */
9908 chandef.chan = NULL;
9909 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9910 err = nl80211_parse_chandef(rdev, info, &chandef);
9911 if (err)
9912 return err;
9913 }
9914
9915 if (!chandef.chan && params.offchan)
9916 return -EINVAL;
9917
9918 wdev_lock(wdev);
9919 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9920 wdev_unlock(wdev);
9921 return -EBUSY;
9922 }
9923 wdev_unlock(wdev);
9924
9925 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9926 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9927
9928 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9929 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9930 int i;
9931
9932 if (len % sizeof(u16))
9933 return -EINVAL;
9934
9935 params.n_csa_offsets = len / sizeof(u16);
9936 params.csa_offsets =
9937 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9938
9939 /* check that all the offsets fit the frame */
9940 for (i = 0; i < params.n_csa_offsets; i++) {
9941 if (params.csa_offsets[i] >= params.len)
9942 return -EINVAL;
9943 }
9944 }
9945
9946 if (!params.dont_wait_for_ack) {
9947 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9948 if (!msg)
9949 return -ENOMEM;
9950
9951 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9952 NL80211_CMD_FRAME);
9953 if (!hdr) {
9954 err = -ENOBUFS;
9955 goto free_msg;
9956 }
9957 }
9958
9959 params.chan = chandef.chan;
9960 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9961 if (err)
9962 goto free_msg;
9963
9964 if (msg) {
9965 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9966 NL80211_ATTR_PAD))
9967 goto nla_put_failure;
9968
9969 genlmsg_end(msg, hdr);
9970 return genlmsg_reply(msg, info);
9971 }
9972
9973 return 0;
9974
9975 nla_put_failure:
9976 err = -ENOBUFS;
9977 free_msg:
9978 nlmsg_free(msg);
9979 return err;
9980 }
9981
9982 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9983 {
9984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9985 struct wireless_dev *wdev = info->user_ptr[1];
9986 u64 cookie;
9987
9988 if (!info->attrs[NL80211_ATTR_COOKIE])
9989 return -EINVAL;
9990
9991 if (!rdev->ops->mgmt_tx_cancel_wait)
9992 return -EOPNOTSUPP;
9993
9994 switch (wdev->iftype) {
9995 case NL80211_IFTYPE_STATION:
9996 case NL80211_IFTYPE_ADHOC:
9997 case NL80211_IFTYPE_P2P_CLIENT:
9998 case NL80211_IFTYPE_AP:
9999 case NL80211_IFTYPE_AP_VLAN:
10000 case NL80211_IFTYPE_P2P_GO:
10001 case NL80211_IFTYPE_P2P_DEVICE:
10002 break;
10003 case NL80211_IFTYPE_NAN:
10004 default:
10005 return -EOPNOTSUPP;
10006 }
10007
10008 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10009
10010 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10011 }
10012
10013 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10014 {
10015 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10016 struct wireless_dev *wdev;
10017 struct net_device *dev = info->user_ptr[1];
10018 u8 ps_state;
10019 bool state;
10020 int err;
10021
10022 if (!info->attrs[NL80211_ATTR_PS_STATE])
10023 return -EINVAL;
10024
10025 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10026
10027 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
10028 return -EINVAL;
10029
10030 wdev = dev->ieee80211_ptr;
10031
10032 if (!rdev->ops->set_power_mgmt)
10033 return -EOPNOTSUPP;
10034
10035 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10036
10037 if (state == wdev->ps)
10038 return 0;
10039
10040 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10041 if (!err)
10042 wdev->ps = state;
10043 return err;
10044 }
10045
10046 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10047 {
10048 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10049 enum nl80211_ps_state ps_state;
10050 struct wireless_dev *wdev;
10051 struct net_device *dev = info->user_ptr[1];
10052 struct sk_buff *msg;
10053 void *hdr;
10054 int err;
10055
10056 wdev = dev->ieee80211_ptr;
10057
10058 if (!rdev->ops->set_power_mgmt)
10059 return -EOPNOTSUPP;
10060
10061 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10062 if (!msg)
10063 return -ENOMEM;
10064
10065 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10066 NL80211_CMD_GET_POWER_SAVE);
10067 if (!hdr) {
10068 err = -ENOBUFS;
10069 goto free_msg;
10070 }
10071
10072 if (wdev->ps)
10073 ps_state = NL80211_PS_ENABLED;
10074 else
10075 ps_state = NL80211_PS_DISABLED;
10076
10077 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10078 goto nla_put_failure;
10079
10080 genlmsg_end(msg, hdr);
10081 return genlmsg_reply(msg, info);
10082
10083 nla_put_failure:
10084 err = -ENOBUFS;
10085 free_msg:
10086 nlmsg_free(msg);
10087 return err;
10088 }
10089
10090 static const struct nla_policy
10091 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10092 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10093 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10094 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10095 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10096 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10097 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10098 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10099 };
10100
10101 static int nl80211_set_cqm_txe(struct genl_info *info,
10102 u32 rate, u32 pkts, u32 intvl)
10103 {
10104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10105 struct net_device *dev = info->user_ptr[1];
10106 struct wireless_dev *wdev = dev->ieee80211_ptr;
10107
10108 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10109 return -EINVAL;
10110
10111 if (!rdev->ops->set_cqm_txe_config)
10112 return -EOPNOTSUPP;
10113
10114 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10115 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10116 return -EOPNOTSUPP;
10117
10118 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10119 }
10120
10121 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10122 struct net_device *dev)
10123 {
10124 struct wireless_dev *wdev = dev->ieee80211_ptr;
10125 s32 last, low, high;
10126 u32 hyst;
10127 int i, n;
10128 int err;
10129
10130 /* RSSI reporting disabled? */
10131 if (!wdev->cqm_config)
10132 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10133
10134 /*
10135 * Obtain current RSSI value if possible, if not and no RSSI threshold
10136 * event has been received yet, we should receive an event after a
10137 * connection is established and enough beacons received to calculate
10138 * the average.
10139 */
10140 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10141 rdev->ops->get_station) {
10142 struct station_info sinfo = {};
10143 u8 *mac_addr;
10144
10145 mac_addr = wdev->current_bss->pub.bssid;
10146
10147 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10148 if (err)
10149 return err;
10150
10151 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10152 wdev->cqm_config->last_rssi_event_value =
10153 (s8) sinfo.rx_beacon_signal_avg;
10154 }
10155
10156 last = wdev->cqm_config->last_rssi_event_value;
10157 hyst = wdev->cqm_config->rssi_hyst;
10158 n = wdev->cqm_config->n_rssi_thresholds;
10159
10160 for (i = 0; i < n; i++)
10161 if (last < wdev->cqm_config->rssi_thresholds[i])
10162 break;
10163
10164 low = i > 0 ?
10165 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
10166 high = i < n ?
10167 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
10168
10169 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10170 }
10171
10172 static int nl80211_set_cqm_rssi(struct genl_info *info,
10173 const s32 *thresholds, int n_thresholds,
10174 u32 hysteresis)
10175 {
10176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10177 struct net_device *dev = info->user_ptr[1];
10178 struct wireless_dev *wdev = dev->ieee80211_ptr;
10179 int i, err;
10180 s32 prev = S32_MIN;
10181
10182 /* Check all values negative and sorted */
10183 for (i = 0; i < n_thresholds; i++) {
10184 if (thresholds[i] > 0 || thresholds[i] <= prev)
10185 return -EINVAL;
10186
10187 prev = thresholds[i];
10188 }
10189
10190 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10191 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10192 return -EOPNOTSUPP;
10193
10194 wdev_lock(wdev);
10195 cfg80211_cqm_config_free(wdev);
10196 wdev_unlock(wdev);
10197
10198 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10199 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10200 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10201
10202 return rdev_set_cqm_rssi_config(rdev, dev,
10203 thresholds[0], hysteresis);
10204 }
10205
10206 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10207 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10208 return -EOPNOTSUPP;
10209
10210 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10211 n_thresholds = 0;
10212
10213 wdev_lock(wdev);
10214 if (n_thresholds) {
10215 struct cfg80211_cqm_config *cqm_config;
10216
10217 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10218 n_thresholds * sizeof(s32), GFP_KERNEL);
10219 if (!cqm_config) {
10220 err = -ENOMEM;
10221 goto unlock;
10222 }
10223
10224 cqm_config->rssi_hyst = hysteresis;
10225 cqm_config->n_rssi_thresholds = n_thresholds;
10226 memcpy(cqm_config->rssi_thresholds, thresholds,
10227 n_thresholds * sizeof(s32));
10228
10229 wdev->cqm_config = cqm_config;
10230 }
10231
10232 err = cfg80211_cqm_rssi_update(rdev, dev);
10233
10234 unlock:
10235 wdev_unlock(wdev);
10236
10237 return err;
10238 }
10239
10240 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10241 {
10242 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10243 struct nlattr *cqm;
10244 int err;
10245
10246 cqm = info->attrs[NL80211_ATTR_CQM];
10247 if (!cqm)
10248 return -EINVAL;
10249
10250 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10251 nl80211_attr_cqm_policy, info->extack);
10252 if (err)
10253 return err;
10254
10255 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10256 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10257 const s32 *thresholds =
10258 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10259 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10260 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10261
10262 if (len % 4)
10263 return -EINVAL;
10264
10265 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10266 hysteresis);
10267 }
10268
10269 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10270 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10271 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10272 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10273 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10274 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10275
10276 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10277 }
10278
10279 return -EINVAL;
10280 }
10281
10282 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10283 {
10284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10285 struct net_device *dev = info->user_ptr[1];
10286 struct ocb_setup setup = {};
10287 int err;
10288
10289 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10290 if (err)
10291 return err;
10292
10293 return cfg80211_join_ocb(rdev, dev, &setup);
10294 }
10295
10296 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10297 {
10298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10299 struct net_device *dev = info->user_ptr[1];
10300
10301 return cfg80211_leave_ocb(rdev, dev);
10302 }
10303
10304 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10305 {
10306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10307 struct net_device *dev = info->user_ptr[1];
10308 struct mesh_config cfg;
10309 struct mesh_setup setup;
10310 int err;
10311
10312 /* start with default */
10313 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10314 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10315
10316 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10317 /* and parse parameters if given */
10318 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10319 if (err)
10320 return err;
10321 }
10322
10323 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10324 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10325 return -EINVAL;
10326
10327 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10328 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10329
10330 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10331 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10332 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10333 return -EINVAL;
10334
10335 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10336 setup.beacon_interval =
10337 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10338
10339 err = cfg80211_validate_beacon_int(rdev,
10340 NL80211_IFTYPE_MESH_POINT,
10341 setup.beacon_interval);
10342 if (err)
10343 return err;
10344 }
10345
10346 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10347 setup.dtim_period =
10348 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10349 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10350 return -EINVAL;
10351 }
10352
10353 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10354 /* parse additional setup parameters if given */
10355 err = nl80211_parse_mesh_setup(info, &setup);
10356 if (err)
10357 return err;
10358 }
10359
10360 if (setup.user_mpm)
10361 cfg.auto_open_plinks = false;
10362
10363 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10364 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10365 if (err)
10366 return err;
10367 } else {
10368 /* __cfg80211_join_mesh() will sort it out */
10369 setup.chandef.chan = NULL;
10370 }
10371
10372 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10373 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10374 int n_rates =
10375 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10376 struct ieee80211_supported_band *sband;
10377
10378 if (!setup.chandef.chan)
10379 return -EINVAL;
10380
10381 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10382
10383 err = ieee80211_get_ratemask(sband, rates, n_rates,
10384 &setup.basic_rates);
10385 if (err)
10386 return err;
10387 }
10388
10389 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10390 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10391 if (err)
10392 return err;
10393
10394 if (!setup.chandef.chan)
10395 return -EINVAL;
10396
10397 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10398 &setup.beacon_rate);
10399 if (err)
10400 return err;
10401 }
10402
10403 setup.userspace_handles_dfs =
10404 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10405
10406 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10407 int r = validate_pae_over_nl80211(rdev, info);
10408
10409 if (r < 0)
10410 return r;
10411
10412 setup.control_port_over_nl80211 = true;
10413 }
10414
10415 wdev_lock(dev->ieee80211_ptr);
10416 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10417 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10418 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10419 wdev_unlock(dev->ieee80211_ptr);
10420
10421 return err;
10422 }
10423
10424 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10425 {
10426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10427 struct net_device *dev = info->user_ptr[1];
10428
10429 return cfg80211_leave_mesh(rdev, dev);
10430 }
10431
10432 #ifdef CONFIG_PM
10433 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10434 struct cfg80211_registered_device *rdev)
10435 {
10436 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10437 struct nlattr *nl_pats, *nl_pat;
10438 int i, pat_len;
10439
10440 if (!wowlan->n_patterns)
10441 return 0;
10442
10443 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10444 if (!nl_pats)
10445 return -ENOBUFS;
10446
10447 for (i = 0; i < wowlan->n_patterns; i++) {
10448 nl_pat = nla_nest_start(msg, i + 1);
10449 if (!nl_pat)
10450 return -ENOBUFS;
10451 pat_len = wowlan->patterns[i].pattern_len;
10452 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10453 wowlan->patterns[i].mask) ||
10454 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10455 wowlan->patterns[i].pattern) ||
10456 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10457 wowlan->patterns[i].pkt_offset))
10458 return -ENOBUFS;
10459 nla_nest_end(msg, nl_pat);
10460 }
10461 nla_nest_end(msg, nl_pats);
10462
10463 return 0;
10464 }
10465
10466 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10467 struct cfg80211_wowlan_tcp *tcp)
10468 {
10469 struct nlattr *nl_tcp;
10470
10471 if (!tcp)
10472 return 0;
10473
10474 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10475 if (!nl_tcp)
10476 return -ENOBUFS;
10477
10478 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10479 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10480 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10481 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10482 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10483 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10484 tcp->payload_len, tcp->payload) ||
10485 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10486 tcp->data_interval) ||
10487 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10488 tcp->wake_len, tcp->wake_data) ||
10489 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10490 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10491 return -ENOBUFS;
10492
10493 if (tcp->payload_seq.len &&
10494 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10495 sizeof(tcp->payload_seq), &tcp->payload_seq))
10496 return -ENOBUFS;
10497
10498 if (tcp->payload_tok.len &&
10499 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10500 sizeof(tcp->payload_tok) + tcp->tokens_size,
10501 &tcp->payload_tok))
10502 return -ENOBUFS;
10503
10504 nla_nest_end(msg, nl_tcp);
10505
10506 return 0;
10507 }
10508
10509 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10510 struct cfg80211_sched_scan_request *req)
10511 {
10512 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10513 int i;
10514
10515 if (!req)
10516 return 0;
10517
10518 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10519 if (!nd)
10520 return -ENOBUFS;
10521
10522 if (req->n_scan_plans == 1 &&
10523 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10524 req->scan_plans[0].interval * 1000))
10525 return -ENOBUFS;
10526
10527 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10528 return -ENOBUFS;
10529
10530 if (req->relative_rssi_set) {
10531 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10532
10533 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10534 req->relative_rssi))
10535 return -ENOBUFS;
10536
10537 rssi_adjust.band = req->rssi_adjust.band;
10538 rssi_adjust.delta = req->rssi_adjust.delta;
10539 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10540 sizeof(rssi_adjust), &rssi_adjust))
10541 return -ENOBUFS;
10542 }
10543
10544 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10545 if (!freqs)
10546 return -ENOBUFS;
10547
10548 for (i = 0; i < req->n_channels; i++) {
10549 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10550 return -ENOBUFS;
10551 }
10552
10553 nla_nest_end(msg, freqs);
10554
10555 if (req->n_match_sets) {
10556 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10557 if (!matches)
10558 return -ENOBUFS;
10559
10560 for (i = 0; i < req->n_match_sets; i++) {
10561 match = nla_nest_start(msg, i);
10562 if (!match)
10563 return -ENOBUFS;
10564
10565 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10566 req->match_sets[i].ssid.ssid_len,
10567 req->match_sets[i].ssid.ssid))
10568 return -ENOBUFS;
10569 nla_nest_end(msg, match);
10570 }
10571 nla_nest_end(msg, matches);
10572 }
10573
10574 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10575 if (!scan_plans)
10576 return -ENOBUFS;
10577
10578 for (i = 0; i < req->n_scan_plans; i++) {
10579 scan_plan = nla_nest_start(msg, i + 1);
10580 if (!scan_plan)
10581 return -ENOBUFS;
10582
10583 if (!scan_plan ||
10584 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10585 req->scan_plans[i].interval) ||
10586 (req->scan_plans[i].iterations &&
10587 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10588 req->scan_plans[i].iterations)))
10589 return -ENOBUFS;
10590 nla_nest_end(msg, scan_plan);
10591 }
10592 nla_nest_end(msg, scan_plans);
10593
10594 nla_nest_end(msg, nd);
10595
10596 return 0;
10597 }
10598
10599 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10600 {
10601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10602 struct sk_buff *msg;
10603 void *hdr;
10604 u32 size = NLMSG_DEFAULT_SIZE;
10605
10606 if (!rdev->wiphy.wowlan)
10607 return -EOPNOTSUPP;
10608
10609 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10610 /* adjust size to have room for all the data */
10611 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10612 rdev->wiphy.wowlan_config->tcp->payload_len +
10613 rdev->wiphy.wowlan_config->tcp->wake_len +
10614 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10615 }
10616
10617 msg = nlmsg_new(size, GFP_KERNEL);
10618 if (!msg)
10619 return -ENOMEM;
10620
10621 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10622 NL80211_CMD_GET_WOWLAN);
10623 if (!hdr)
10624 goto nla_put_failure;
10625
10626 if (rdev->wiphy.wowlan_config) {
10627 struct nlattr *nl_wowlan;
10628
10629 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10630 if (!nl_wowlan)
10631 goto nla_put_failure;
10632
10633 if ((rdev->wiphy.wowlan_config->any &&
10634 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10635 (rdev->wiphy.wowlan_config->disconnect &&
10636 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10637 (rdev->wiphy.wowlan_config->magic_pkt &&
10638 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10639 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10640 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10641 (rdev->wiphy.wowlan_config->eap_identity_req &&
10642 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10643 (rdev->wiphy.wowlan_config->four_way_handshake &&
10644 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10645 (rdev->wiphy.wowlan_config->rfkill_release &&
10646 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10647 goto nla_put_failure;
10648
10649 if (nl80211_send_wowlan_patterns(msg, rdev))
10650 goto nla_put_failure;
10651
10652 if (nl80211_send_wowlan_tcp(msg,
10653 rdev->wiphy.wowlan_config->tcp))
10654 goto nla_put_failure;
10655
10656 if (nl80211_send_wowlan_nd(
10657 msg,
10658 rdev->wiphy.wowlan_config->nd_config))
10659 goto nla_put_failure;
10660
10661 nla_nest_end(msg, nl_wowlan);
10662 }
10663
10664 genlmsg_end(msg, hdr);
10665 return genlmsg_reply(msg, info);
10666
10667 nla_put_failure:
10668 nlmsg_free(msg);
10669 return -ENOBUFS;
10670 }
10671
10672 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10673 struct nlattr *attr,
10674 struct cfg80211_wowlan *trig)
10675 {
10676 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10677 struct cfg80211_wowlan_tcp *cfg;
10678 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10679 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10680 u32 size;
10681 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10682 int err, port;
10683
10684 if (!rdev->wiphy.wowlan->tcp)
10685 return -EINVAL;
10686
10687 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10688 nl80211_wowlan_tcp_policy, NULL);
10689 if (err)
10690 return err;
10691
10692 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10693 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10694 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10695 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10696 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10697 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10698 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10699 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10700 return -EINVAL;
10701
10702 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10703 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10704 return -EINVAL;
10705
10706 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10707 rdev->wiphy.wowlan->tcp->data_interval_max ||
10708 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10709 return -EINVAL;
10710
10711 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10712 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10713 return -EINVAL;
10714
10715 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10716 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10717 return -EINVAL;
10718
10719 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10720 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10721
10722 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10723 tokens_size = tokln - sizeof(*tok);
10724
10725 if (!tok->len || tokens_size % tok->len)
10726 return -EINVAL;
10727 if (!rdev->wiphy.wowlan->tcp->tok)
10728 return -EINVAL;
10729 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10730 return -EINVAL;
10731 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10732 return -EINVAL;
10733 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10734 return -EINVAL;
10735 if (tok->offset + tok->len > data_size)
10736 return -EINVAL;
10737 }
10738
10739 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10740 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10741 if (!rdev->wiphy.wowlan->tcp->seq)
10742 return -EINVAL;
10743 if (seq->len == 0 || seq->len > 4)
10744 return -EINVAL;
10745 if (seq->len + seq->offset > data_size)
10746 return -EINVAL;
10747 }
10748
10749 size = sizeof(*cfg);
10750 size += data_size;
10751 size += wake_size + wake_mask_size;
10752 size += tokens_size;
10753
10754 cfg = kzalloc(size, GFP_KERNEL);
10755 if (!cfg)
10756 return -ENOMEM;
10757 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10758 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10759 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10760 ETH_ALEN);
10761 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10762 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10763 else
10764 port = 0;
10765 #ifdef CONFIG_INET
10766 /* allocate a socket and port for it and use it */
10767 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10768 IPPROTO_TCP, &cfg->sock, 1);
10769 if (err) {
10770 kfree(cfg);
10771 return err;
10772 }
10773 if (inet_csk_get_port(cfg->sock->sk, port)) {
10774 sock_release(cfg->sock);
10775 kfree(cfg);
10776 return -EADDRINUSE;
10777 }
10778 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10779 #else
10780 if (!port) {
10781 kfree(cfg);
10782 return -EINVAL;
10783 }
10784 cfg->src_port = port;
10785 #endif
10786
10787 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10788 cfg->payload_len = data_size;
10789 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10790 memcpy((void *)cfg->payload,
10791 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10792 data_size);
10793 if (seq)
10794 cfg->payload_seq = *seq;
10795 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10796 cfg->wake_len = wake_size;
10797 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10798 memcpy((void *)cfg->wake_data,
10799 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10800 wake_size);
10801 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10802 data_size + wake_size;
10803 memcpy((void *)cfg->wake_mask,
10804 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10805 wake_mask_size);
10806 if (tok) {
10807 cfg->tokens_size = tokens_size;
10808 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10809 }
10810
10811 trig->tcp = cfg;
10812
10813 return 0;
10814 }
10815
10816 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10817 const struct wiphy_wowlan_support *wowlan,
10818 struct nlattr *attr,
10819 struct cfg80211_wowlan *trig)
10820 {
10821 struct nlattr **tb;
10822 int err;
10823
10824 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
10825 if (!tb)
10826 return -ENOMEM;
10827
10828 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10829 err = -EOPNOTSUPP;
10830 goto out;
10831 }
10832
10833 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10834 NULL);
10835 if (err)
10836 goto out;
10837
10838 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10839 wowlan->max_nd_match_sets);
10840 err = PTR_ERR_OR_ZERO(trig->nd_config);
10841 if (err)
10842 trig->nd_config = NULL;
10843
10844 out:
10845 kfree(tb);
10846 return err;
10847 }
10848
10849 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10850 {
10851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10852 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10853 struct cfg80211_wowlan new_triggers = {};
10854 struct cfg80211_wowlan *ntrig;
10855 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10856 int err, i;
10857 bool prev_enabled = rdev->wiphy.wowlan_config;
10858 bool regular = false;
10859
10860 if (!wowlan)
10861 return -EOPNOTSUPP;
10862
10863 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10864 cfg80211_rdev_free_wowlan(rdev);
10865 rdev->wiphy.wowlan_config = NULL;
10866 goto set_wakeup;
10867 }
10868
10869 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10870 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10871 nl80211_wowlan_policy, info->extack);
10872 if (err)
10873 return err;
10874
10875 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10876 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10877 return -EINVAL;
10878 new_triggers.any = true;
10879 }
10880
10881 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10882 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10883 return -EINVAL;
10884 new_triggers.disconnect = true;
10885 regular = true;
10886 }
10887
10888 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10889 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10890 return -EINVAL;
10891 new_triggers.magic_pkt = true;
10892 regular = true;
10893 }
10894
10895 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10896 return -EINVAL;
10897
10898 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10899 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10900 return -EINVAL;
10901 new_triggers.gtk_rekey_failure = true;
10902 regular = true;
10903 }
10904
10905 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10906 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10907 return -EINVAL;
10908 new_triggers.eap_identity_req = true;
10909 regular = true;
10910 }
10911
10912 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10913 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10914 return -EINVAL;
10915 new_triggers.four_way_handshake = true;
10916 regular = true;
10917 }
10918
10919 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10920 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10921 return -EINVAL;
10922 new_triggers.rfkill_release = true;
10923 regular = true;
10924 }
10925
10926 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10927 struct nlattr *pat;
10928 int n_patterns = 0;
10929 int rem, pat_len, mask_len, pkt_offset;
10930 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10931
10932 regular = true;
10933
10934 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10935 rem)
10936 n_patterns++;
10937 if (n_patterns > wowlan->n_patterns)
10938 return -EINVAL;
10939
10940 new_triggers.patterns = kcalloc(n_patterns,
10941 sizeof(new_triggers.patterns[0]),
10942 GFP_KERNEL);
10943 if (!new_triggers.patterns)
10944 return -ENOMEM;
10945
10946 new_triggers.n_patterns = n_patterns;
10947 i = 0;
10948
10949 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10950 rem) {
10951 u8 *mask_pat;
10952
10953 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10954 nl80211_packet_pattern_policy,
10955 info->extack);
10956 if (err)
10957 goto error;
10958
10959 err = -EINVAL;
10960 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10961 !pat_tb[NL80211_PKTPAT_PATTERN])
10962 goto error;
10963 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10964 mask_len = DIV_ROUND_UP(pat_len, 8);
10965 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10966 goto error;
10967 if (pat_len > wowlan->pattern_max_len ||
10968 pat_len < wowlan->pattern_min_len)
10969 goto error;
10970
10971 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10972 pkt_offset = 0;
10973 else
10974 pkt_offset = nla_get_u32(
10975 pat_tb[NL80211_PKTPAT_OFFSET]);
10976 if (pkt_offset > wowlan->max_pkt_offset)
10977 goto error;
10978 new_triggers.patterns[i].pkt_offset = pkt_offset;
10979
10980 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10981 if (!mask_pat) {
10982 err = -ENOMEM;
10983 goto error;
10984 }
10985 new_triggers.patterns[i].mask = mask_pat;
10986 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10987 mask_len);
10988 mask_pat += mask_len;
10989 new_triggers.patterns[i].pattern = mask_pat;
10990 new_triggers.patterns[i].pattern_len = pat_len;
10991 memcpy(mask_pat,
10992 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10993 pat_len);
10994 i++;
10995 }
10996 }
10997
10998 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10999 regular = true;
11000 err = nl80211_parse_wowlan_tcp(
11001 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11002 &new_triggers);
11003 if (err)
11004 goto error;
11005 }
11006
11007 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11008 regular = true;
11009 err = nl80211_parse_wowlan_nd(
11010 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11011 &new_triggers);
11012 if (err)
11013 goto error;
11014 }
11015
11016 /* The 'any' trigger means the device continues operating more or less
11017 * as in its normal operation mode and wakes up the host on most of the
11018 * normal interrupts (like packet RX, ...)
11019 * It therefore makes little sense to combine with the more constrained
11020 * wakeup trigger modes.
11021 */
11022 if (new_triggers.any && regular) {
11023 err = -EINVAL;
11024 goto error;
11025 }
11026
11027 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11028 if (!ntrig) {
11029 err = -ENOMEM;
11030 goto error;
11031 }
11032 cfg80211_rdev_free_wowlan(rdev);
11033 rdev->wiphy.wowlan_config = ntrig;
11034
11035 set_wakeup:
11036 if (rdev->ops->set_wakeup &&
11037 prev_enabled != !!rdev->wiphy.wowlan_config)
11038 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11039
11040 return 0;
11041 error:
11042 for (i = 0; i < new_triggers.n_patterns; i++)
11043 kfree(new_triggers.patterns[i].mask);
11044 kfree(new_triggers.patterns);
11045 if (new_triggers.tcp && new_triggers.tcp->sock)
11046 sock_release(new_triggers.tcp->sock);
11047 kfree(new_triggers.tcp);
11048 kfree(new_triggers.nd_config);
11049 return err;
11050 }
11051 #endif
11052
11053 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11054 struct cfg80211_registered_device *rdev)
11055 {
11056 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11057 int i, j, pat_len;
11058 struct cfg80211_coalesce_rules *rule;
11059
11060 if (!rdev->coalesce->n_rules)
11061 return 0;
11062
11063 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11064 if (!nl_rules)
11065 return -ENOBUFS;
11066
11067 for (i = 0; i < rdev->coalesce->n_rules; i++) {
11068 nl_rule = nla_nest_start(msg, i + 1);
11069 if (!nl_rule)
11070 return -ENOBUFS;
11071
11072 rule = &rdev->coalesce->rules[i];
11073 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11074 rule->delay))
11075 return -ENOBUFS;
11076
11077 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11078 rule->condition))
11079 return -ENOBUFS;
11080
11081 nl_pats = nla_nest_start(msg,
11082 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11083 if (!nl_pats)
11084 return -ENOBUFS;
11085
11086 for (j = 0; j < rule->n_patterns; j++) {
11087 nl_pat = nla_nest_start(msg, j + 1);
11088 if (!nl_pat)
11089 return -ENOBUFS;
11090 pat_len = rule->patterns[j].pattern_len;
11091 if (nla_put(msg, NL80211_PKTPAT_MASK,
11092 DIV_ROUND_UP(pat_len, 8),
11093 rule->patterns[j].mask) ||
11094 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11095 rule->patterns[j].pattern) ||
11096 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11097 rule->patterns[j].pkt_offset))
11098 return -ENOBUFS;
11099 nla_nest_end(msg, nl_pat);
11100 }
11101 nla_nest_end(msg, nl_pats);
11102 nla_nest_end(msg, nl_rule);
11103 }
11104 nla_nest_end(msg, nl_rules);
11105
11106 return 0;
11107 }
11108
11109 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11110 {
11111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11112 struct sk_buff *msg;
11113 void *hdr;
11114
11115 if (!rdev->wiphy.coalesce)
11116 return -EOPNOTSUPP;
11117
11118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11119 if (!msg)
11120 return -ENOMEM;
11121
11122 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11123 NL80211_CMD_GET_COALESCE);
11124 if (!hdr)
11125 goto nla_put_failure;
11126
11127 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11128 goto nla_put_failure;
11129
11130 genlmsg_end(msg, hdr);
11131 return genlmsg_reply(msg, info);
11132
11133 nla_put_failure:
11134 nlmsg_free(msg);
11135 return -ENOBUFS;
11136 }
11137
11138 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11139 {
11140 struct cfg80211_coalesce *coalesce = rdev->coalesce;
11141 int i, j;
11142 struct cfg80211_coalesce_rules *rule;
11143
11144 if (!coalesce)
11145 return;
11146
11147 for (i = 0; i < coalesce->n_rules; i++) {
11148 rule = &coalesce->rules[i];
11149 for (j = 0; j < rule->n_patterns; j++)
11150 kfree(rule->patterns[j].mask);
11151 kfree(rule->patterns);
11152 }
11153 kfree(coalesce->rules);
11154 kfree(coalesce);
11155 rdev->coalesce = NULL;
11156 }
11157
11158 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11159 struct nlattr *rule,
11160 struct cfg80211_coalesce_rules *new_rule)
11161 {
11162 int err, i;
11163 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11164 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11165 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11166 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11167
11168 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11169 nl80211_coalesce_policy, NULL);
11170 if (err)
11171 return err;
11172
11173 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11174 new_rule->delay =
11175 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11176 if (new_rule->delay > coalesce->max_delay)
11177 return -EINVAL;
11178
11179 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11180 new_rule->condition =
11181 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11182 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11183 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11184 return -EINVAL;
11185
11186 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11187 return -EINVAL;
11188
11189 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11190 rem)
11191 n_patterns++;
11192 if (n_patterns > coalesce->n_patterns)
11193 return -EINVAL;
11194
11195 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11196 GFP_KERNEL);
11197 if (!new_rule->patterns)
11198 return -ENOMEM;
11199
11200 new_rule->n_patterns = n_patterns;
11201 i = 0;
11202
11203 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11204 rem) {
11205 u8 *mask_pat;
11206
11207 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11208 nl80211_packet_pattern_policy, NULL);
11209 if (err)
11210 return err;
11211
11212 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11213 !pat_tb[NL80211_PKTPAT_PATTERN])
11214 return -EINVAL;
11215 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11216 mask_len = DIV_ROUND_UP(pat_len, 8);
11217 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11218 return -EINVAL;
11219 if (pat_len > coalesce->pattern_max_len ||
11220 pat_len < coalesce->pattern_min_len)
11221 return -EINVAL;
11222
11223 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11224 pkt_offset = 0;
11225 else
11226 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11227 if (pkt_offset > coalesce->max_pkt_offset)
11228 return -EINVAL;
11229 new_rule->patterns[i].pkt_offset = pkt_offset;
11230
11231 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11232 if (!mask_pat)
11233 return -ENOMEM;
11234
11235 new_rule->patterns[i].mask = mask_pat;
11236 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11237 mask_len);
11238
11239 mask_pat += mask_len;
11240 new_rule->patterns[i].pattern = mask_pat;
11241 new_rule->patterns[i].pattern_len = pat_len;
11242 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11243 pat_len);
11244 i++;
11245 }
11246
11247 return 0;
11248 }
11249
11250 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11251 {
11252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11253 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11254 struct cfg80211_coalesce new_coalesce = {};
11255 struct cfg80211_coalesce *n_coalesce;
11256 int err, rem_rule, n_rules = 0, i, j;
11257 struct nlattr *rule;
11258 struct cfg80211_coalesce_rules *tmp_rule;
11259
11260 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11261 return -EOPNOTSUPP;
11262
11263 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11264 cfg80211_rdev_free_coalesce(rdev);
11265 rdev_set_coalesce(rdev, NULL);
11266 return 0;
11267 }
11268
11269 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11270 rem_rule)
11271 n_rules++;
11272 if (n_rules > coalesce->n_rules)
11273 return -EINVAL;
11274
11275 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11276 GFP_KERNEL);
11277 if (!new_coalesce.rules)
11278 return -ENOMEM;
11279
11280 new_coalesce.n_rules = n_rules;
11281 i = 0;
11282
11283 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11284 rem_rule) {
11285 err = nl80211_parse_coalesce_rule(rdev, rule,
11286 &new_coalesce.rules[i]);
11287 if (err)
11288 goto error;
11289
11290 i++;
11291 }
11292
11293 err = rdev_set_coalesce(rdev, &new_coalesce);
11294 if (err)
11295 goto error;
11296
11297 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11298 if (!n_coalesce) {
11299 err = -ENOMEM;
11300 goto error;
11301 }
11302 cfg80211_rdev_free_coalesce(rdev);
11303 rdev->coalesce = n_coalesce;
11304
11305 return 0;
11306 error:
11307 for (i = 0; i < new_coalesce.n_rules; i++) {
11308 tmp_rule = &new_coalesce.rules[i];
11309 for (j = 0; j < tmp_rule->n_patterns; j++)
11310 kfree(tmp_rule->patterns[j].mask);
11311 kfree(tmp_rule->patterns);
11312 }
11313 kfree(new_coalesce.rules);
11314
11315 return err;
11316 }
11317
11318 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11319 {
11320 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11321 struct net_device *dev = info->user_ptr[1];
11322 struct wireless_dev *wdev = dev->ieee80211_ptr;
11323 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11324 struct cfg80211_gtk_rekey_data rekey_data;
11325 int err;
11326
11327 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11328 return -EINVAL;
11329
11330 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11331 info->attrs[NL80211_ATTR_REKEY_DATA],
11332 nl80211_rekey_policy, info->extack);
11333 if (err)
11334 return err;
11335
11336 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11337 !tb[NL80211_REKEY_DATA_KCK])
11338 return -EINVAL;
11339 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11340 return -ERANGE;
11341 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11342 return -ERANGE;
11343 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11344 return -ERANGE;
11345
11346 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11347 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11348 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11349
11350 wdev_lock(wdev);
11351 if (!wdev->current_bss) {
11352 err = -ENOTCONN;
11353 goto out;
11354 }
11355
11356 if (!rdev->ops->set_rekey_data) {
11357 err = -EOPNOTSUPP;
11358 goto out;
11359 }
11360
11361 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11362 out:
11363 wdev_unlock(wdev);
11364 return err;
11365 }
11366
11367 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11368 struct genl_info *info)
11369 {
11370 struct net_device *dev = info->user_ptr[1];
11371 struct wireless_dev *wdev = dev->ieee80211_ptr;
11372
11373 if (wdev->iftype != NL80211_IFTYPE_AP &&
11374 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11375 return -EINVAL;
11376
11377 if (wdev->ap_unexpected_nlportid)
11378 return -EBUSY;
11379
11380 wdev->ap_unexpected_nlportid = info->snd_portid;
11381 return 0;
11382 }
11383
11384 static int nl80211_probe_client(struct sk_buff *skb,
11385 struct genl_info *info)
11386 {
11387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11388 struct net_device *dev = info->user_ptr[1];
11389 struct wireless_dev *wdev = dev->ieee80211_ptr;
11390 struct sk_buff *msg;
11391 void *hdr;
11392 const u8 *addr;
11393 u64 cookie;
11394 int err;
11395
11396 if (wdev->iftype != NL80211_IFTYPE_AP &&
11397 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11398 return -EOPNOTSUPP;
11399
11400 if (!info->attrs[NL80211_ATTR_MAC])
11401 return -EINVAL;
11402
11403 if (!rdev->ops->probe_client)
11404 return -EOPNOTSUPP;
11405
11406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11407 if (!msg)
11408 return -ENOMEM;
11409
11410 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11411 NL80211_CMD_PROBE_CLIENT);
11412 if (!hdr) {
11413 err = -ENOBUFS;
11414 goto free_msg;
11415 }
11416
11417 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11418
11419 err = rdev_probe_client(rdev, dev, addr, &cookie);
11420 if (err)
11421 goto free_msg;
11422
11423 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11424 NL80211_ATTR_PAD))
11425 goto nla_put_failure;
11426
11427 genlmsg_end(msg, hdr);
11428
11429 return genlmsg_reply(msg, info);
11430
11431 nla_put_failure:
11432 err = -ENOBUFS;
11433 free_msg:
11434 nlmsg_free(msg);
11435 return err;
11436 }
11437
11438 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11439 {
11440 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11441 struct cfg80211_beacon_registration *reg, *nreg;
11442 int rv;
11443
11444 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11445 return -EOPNOTSUPP;
11446
11447 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11448 if (!nreg)
11449 return -ENOMEM;
11450
11451 /* First, check if already registered. */
11452 spin_lock_bh(&rdev->beacon_registrations_lock);
11453 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11454 if (reg->nlportid == info->snd_portid) {
11455 rv = -EALREADY;
11456 goto out_err;
11457 }
11458 }
11459 /* Add it to the list */
11460 nreg->nlportid = info->snd_portid;
11461 list_add(&nreg->list, &rdev->beacon_registrations);
11462
11463 spin_unlock_bh(&rdev->beacon_registrations_lock);
11464
11465 return 0;
11466 out_err:
11467 spin_unlock_bh(&rdev->beacon_registrations_lock);
11468 kfree(nreg);
11469 return rv;
11470 }
11471
11472 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11473 {
11474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11475 struct wireless_dev *wdev = info->user_ptr[1];
11476 int err;
11477
11478 if (!rdev->ops->start_p2p_device)
11479 return -EOPNOTSUPP;
11480
11481 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11482 return -EOPNOTSUPP;
11483
11484 if (wdev_running(wdev))
11485 return 0;
11486
11487 if (rfkill_blocked(rdev->rfkill))
11488 return -ERFKILL;
11489
11490 err = rdev_start_p2p_device(rdev, wdev);
11491 if (err)
11492 return err;
11493
11494 wdev->is_running = true;
11495 rdev->opencount++;
11496
11497 return 0;
11498 }
11499
11500 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11501 {
11502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11503 struct wireless_dev *wdev = info->user_ptr[1];
11504
11505 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11506 return -EOPNOTSUPP;
11507
11508 if (!rdev->ops->stop_p2p_device)
11509 return -EOPNOTSUPP;
11510
11511 cfg80211_stop_p2p_device(rdev, wdev);
11512
11513 return 0;
11514 }
11515
11516 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11517 {
11518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11519 struct wireless_dev *wdev = info->user_ptr[1];
11520 struct cfg80211_nan_conf conf = {};
11521 int err;
11522
11523 if (wdev->iftype != NL80211_IFTYPE_NAN)
11524 return -EOPNOTSUPP;
11525
11526 if (wdev_running(wdev))
11527 return -EEXIST;
11528
11529 if (rfkill_blocked(rdev->rfkill))
11530 return -ERFKILL;
11531
11532 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11533 return -EINVAL;
11534
11535 conf.master_pref =
11536 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11537 if (!conf.master_pref)
11538 return -EINVAL;
11539
11540 if (info->attrs[NL80211_ATTR_BANDS]) {
11541 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11542
11543 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11544 return -EOPNOTSUPP;
11545
11546 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11547 return -EINVAL;
11548
11549 conf.bands = bands;
11550 }
11551
11552 err = rdev_start_nan(rdev, wdev, &conf);
11553 if (err)
11554 return err;
11555
11556 wdev->is_running = true;
11557 rdev->opencount++;
11558
11559 return 0;
11560 }
11561
11562 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11563 {
11564 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11565 struct wireless_dev *wdev = info->user_ptr[1];
11566
11567 if (wdev->iftype != NL80211_IFTYPE_NAN)
11568 return -EOPNOTSUPP;
11569
11570 cfg80211_stop_nan(rdev, wdev);
11571
11572 return 0;
11573 }
11574
11575 static int validate_nan_filter(struct nlattr *filter_attr)
11576 {
11577 struct nlattr *attr;
11578 int len = 0, n_entries = 0, rem;
11579
11580 nla_for_each_nested(attr, filter_attr, rem) {
11581 len += nla_len(attr);
11582 n_entries++;
11583 }
11584
11585 if (len >= U8_MAX)
11586 return -EINVAL;
11587
11588 return n_entries;
11589 }
11590
11591 static int handle_nan_filter(struct nlattr *attr_filter,
11592 struct cfg80211_nan_func *func,
11593 bool tx)
11594 {
11595 struct nlattr *attr;
11596 int n_entries, rem, i;
11597 struct cfg80211_nan_func_filter *filter;
11598
11599 n_entries = validate_nan_filter(attr_filter);
11600 if (n_entries < 0)
11601 return n_entries;
11602
11603 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11604
11605 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11606 if (!filter)
11607 return -ENOMEM;
11608
11609 i = 0;
11610 nla_for_each_nested(attr, attr_filter, rem) {
11611 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11612 filter[i].len = nla_len(attr);
11613 i++;
11614 }
11615 if (tx) {
11616 func->num_tx_filters = n_entries;
11617 func->tx_filters = filter;
11618 } else {
11619 func->num_rx_filters = n_entries;
11620 func->rx_filters = filter;
11621 }
11622
11623 return 0;
11624 }
11625
11626 static int nl80211_nan_add_func(struct sk_buff *skb,
11627 struct genl_info *info)
11628 {
11629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11630 struct wireless_dev *wdev = info->user_ptr[1];
11631 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11632 struct cfg80211_nan_func *func;
11633 struct sk_buff *msg = NULL;
11634 void *hdr = NULL;
11635 int err = 0;
11636
11637 if (wdev->iftype != NL80211_IFTYPE_NAN)
11638 return -EOPNOTSUPP;
11639
11640 if (!wdev_running(wdev))
11641 return -ENOTCONN;
11642
11643 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11644 return -EINVAL;
11645
11646 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11647 info->attrs[NL80211_ATTR_NAN_FUNC],
11648 nl80211_nan_func_policy, info->extack);
11649 if (err)
11650 return err;
11651
11652 func = kzalloc(sizeof(*func), GFP_KERNEL);
11653 if (!func)
11654 return -ENOMEM;
11655
11656 func->cookie = wdev->wiphy->cookie_counter++;
11657
11658 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11659 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11660 err = -EINVAL;
11661 goto out;
11662 }
11663
11664
11665 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11666
11667 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11668 err = -EINVAL;
11669 goto out;
11670 }
11671
11672 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11673 sizeof(func->service_id));
11674
11675 func->close_range =
11676 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11677
11678 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11679 func->serv_spec_info_len =
11680 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11681 func->serv_spec_info =
11682 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11683 func->serv_spec_info_len,
11684 GFP_KERNEL);
11685 if (!func->serv_spec_info) {
11686 err = -ENOMEM;
11687 goto out;
11688 }
11689 }
11690
11691 if (tb[NL80211_NAN_FUNC_TTL])
11692 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11693
11694 switch (func->type) {
11695 case NL80211_NAN_FUNC_PUBLISH:
11696 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11697 err = -EINVAL;
11698 goto out;
11699 }
11700
11701 func->publish_type =
11702 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11703 func->publish_bcast =
11704 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11705
11706 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11707 func->publish_bcast) {
11708 err = -EINVAL;
11709 goto out;
11710 }
11711 break;
11712 case NL80211_NAN_FUNC_SUBSCRIBE:
11713 func->subscribe_active =
11714 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11715 break;
11716 case NL80211_NAN_FUNC_FOLLOW_UP:
11717 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11718 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11719 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11720 err = -EINVAL;
11721 goto out;
11722 }
11723
11724 func->followup_id =
11725 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11726 func->followup_reqid =
11727 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11728 memcpy(func->followup_dest.addr,
11729 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11730 sizeof(func->followup_dest.addr));
11731 if (func->ttl) {
11732 err = -EINVAL;
11733 goto out;
11734 }
11735 break;
11736 default:
11737 err = -EINVAL;
11738 goto out;
11739 }
11740
11741 if (tb[NL80211_NAN_FUNC_SRF]) {
11742 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11743
11744 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11745 tb[NL80211_NAN_FUNC_SRF],
11746 nl80211_nan_srf_policy, info->extack);
11747 if (err)
11748 goto out;
11749
11750 func->srf_include =
11751 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11752
11753 if (srf_tb[NL80211_NAN_SRF_BF]) {
11754 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11755 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11756 err = -EINVAL;
11757 goto out;
11758 }
11759
11760 func->srf_bf_len =
11761 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11762 func->srf_bf =
11763 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11764 func->srf_bf_len, GFP_KERNEL);
11765 if (!func->srf_bf) {
11766 err = -ENOMEM;
11767 goto out;
11768 }
11769
11770 func->srf_bf_idx =
11771 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11772 } else {
11773 struct nlattr *attr, *mac_attr =
11774 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11775 int n_entries, rem, i = 0;
11776
11777 if (!mac_attr) {
11778 err = -EINVAL;
11779 goto out;
11780 }
11781
11782 n_entries = validate_acl_mac_addrs(mac_attr);
11783 if (n_entries <= 0) {
11784 err = -EINVAL;
11785 goto out;
11786 }
11787
11788 func->srf_num_macs = n_entries;
11789 func->srf_macs =
11790 kcalloc(n_entries, sizeof(*func->srf_macs),
11791 GFP_KERNEL);
11792 if (!func->srf_macs) {
11793 err = -ENOMEM;
11794 goto out;
11795 }
11796
11797 nla_for_each_nested(attr, mac_attr, rem)
11798 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11799 sizeof(*func->srf_macs));
11800 }
11801 }
11802
11803 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11804 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11805 func, true);
11806 if (err)
11807 goto out;
11808 }
11809
11810 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11811 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11812 func, false);
11813 if (err)
11814 goto out;
11815 }
11816
11817 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11818 if (!msg) {
11819 err = -ENOMEM;
11820 goto out;
11821 }
11822
11823 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11824 NL80211_CMD_ADD_NAN_FUNCTION);
11825 /* This can't really happen - we just allocated 4KB */
11826 if (WARN_ON(!hdr)) {
11827 err = -ENOMEM;
11828 goto out;
11829 }
11830
11831 err = rdev_add_nan_func(rdev, wdev, func);
11832 out:
11833 if (err < 0) {
11834 cfg80211_free_nan_func(func);
11835 nlmsg_free(msg);
11836 return err;
11837 }
11838
11839 /* propagate the instance id and cookie to userspace */
11840 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11841 NL80211_ATTR_PAD))
11842 goto nla_put_failure;
11843
11844 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11845 if (!func_attr)
11846 goto nla_put_failure;
11847
11848 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11849 func->instance_id))
11850 goto nla_put_failure;
11851
11852 nla_nest_end(msg, func_attr);
11853
11854 genlmsg_end(msg, hdr);
11855 return genlmsg_reply(msg, info);
11856
11857 nla_put_failure:
11858 nlmsg_free(msg);
11859 return -ENOBUFS;
11860 }
11861
11862 static int nl80211_nan_del_func(struct sk_buff *skb,
11863 struct genl_info *info)
11864 {
11865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11866 struct wireless_dev *wdev = info->user_ptr[1];
11867 u64 cookie;
11868
11869 if (wdev->iftype != NL80211_IFTYPE_NAN)
11870 return -EOPNOTSUPP;
11871
11872 if (!wdev_running(wdev))
11873 return -ENOTCONN;
11874
11875 if (!info->attrs[NL80211_ATTR_COOKIE])
11876 return -EINVAL;
11877
11878 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11879
11880 rdev_del_nan_func(rdev, wdev, cookie);
11881
11882 return 0;
11883 }
11884
11885 static int nl80211_nan_change_config(struct sk_buff *skb,
11886 struct genl_info *info)
11887 {
11888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11889 struct wireless_dev *wdev = info->user_ptr[1];
11890 struct cfg80211_nan_conf conf = {};
11891 u32 changed = 0;
11892
11893 if (wdev->iftype != NL80211_IFTYPE_NAN)
11894 return -EOPNOTSUPP;
11895
11896 if (!wdev_running(wdev))
11897 return -ENOTCONN;
11898
11899 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11900 conf.master_pref =
11901 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11902 if (conf.master_pref <= 1 || conf.master_pref == 255)
11903 return -EINVAL;
11904
11905 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11906 }
11907
11908 if (info->attrs[NL80211_ATTR_BANDS]) {
11909 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11910
11911 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11912 return -EOPNOTSUPP;
11913
11914 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11915 return -EINVAL;
11916
11917 conf.bands = bands;
11918 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11919 }
11920
11921 if (!changed)
11922 return -EINVAL;
11923
11924 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11925 }
11926
11927 void cfg80211_nan_match(struct wireless_dev *wdev,
11928 struct cfg80211_nan_match_params *match, gfp_t gfp)
11929 {
11930 struct wiphy *wiphy = wdev->wiphy;
11931 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11932 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11933 struct sk_buff *msg;
11934 void *hdr;
11935
11936 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11937 return;
11938
11939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11940 if (!msg)
11941 return;
11942
11943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11944 if (!hdr) {
11945 nlmsg_free(msg);
11946 return;
11947 }
11948
11949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11950 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11951 wdev->netdev->ifindex)) ||
11952 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11953 NL80211_ATTR_PAD))
11954 goto nla_put_failure;
11955
11956 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11957 NL80211_ATTR_PAD) ||
11958 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11959 goto nla_put_failure;
11960
11961 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11962 if (!match_attr)
11963 goto nla_put_failure;
11964
11965 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11966 if (!local_func_attr)
11967 goto nla_put_failure;
11968
11969 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11970 goto nla_put_failure;
11971
11972 nla_nest_end(msg, local_func_attr);
11973
11974 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11975 if (!peer_func_attr)
11976 goto nla_put_failure;
11977
11978 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11979 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11980 goto nla_put_failure;
11981
11982 if (match->info && match->info_len &&
11983 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11984 match->info))
11985 goto nla_put_failure;
11986
11987 nla_nest_end(msg, peer_func_attr);
11988 nla_nest_end(msg, match_attr);
11989 genlmsg_end(msg, hdr);
11990
11991 if (!wdev->owner_nlportid)
11992 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11993 msg, 0, NL80211_MCGRP_NAN, gfp);
11994 else
11995 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11996 wdev->owner_nlportid);
11997
11998 return;
11999
12000 nla_put_failure:
12001 nlmsg_free(msg);
12002 }
12003 EXPORT_SYMBOL(cfg80211_nan_match);
12004
12005 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12006 u8 inst_id,
12007 enum nl80211_nan_func_term_reason reason,
12008 u64 cookie, gfp_t gfp)
12009 {
12010 struct wiphy *wiphy = wdev->wiphy;
12011 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12012 struct sk_buff *msg;
12013 struct nlattr *func_attr;
12014 void *hdr;
12015
12016 if (WARN_ON(!inst_id))
12017 return;
12018
12019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12020 if (!msg)
12021 return;
12022
12023 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12024 if (!hdr) {
12025 nlmsg_free(msg);
12026 return;
12027 }
12028
12029 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12030 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12031 wdev->netdev->ifindex)) ||
12032 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12033 NL80211_ATTR_PAD))
12034 goto nla_put_failure;
12035
12036 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12037 NL80211_ATTR_PAD))
12038 goto nla_put_failure;
12039
12040 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12041 if (!func_attr)
12042 goto nla_put_failure;
12043
12044 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12045 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12046 goto nla_put_failure;
12047
12048 nla_nest_end(msg, func_attr);
12049 genlmsg_end(msg, hdr);
12050
12051 if (!wdev->owner_nlportid)
12052 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12053 msg, 0, NL80211_MCGRP_NAN, gfp);
12054 else
12055 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12056 wdev->owner_nlportid);
12057
12058 return;
12059
12060 nla_put_failure:
12061 nlmsg_free(msg);
12062 }
12063 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12064
12065 static int nl80211_get_protocol_features(struct sk_buff *skb,
12066 struct genl_info *info)
12067 {
12068 void *hdr;
12069 struct sk_buff *msg;
12070
12071 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12072 if (!msg)
12073 return -ENOMEM;
12074
12075 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12076 NL80211_CMD_GET_PROTOCOL_FEATURES);
12077 if (!hdr)
12078 goto nla_put_failure;
12079
12080 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12081 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12082 goto nla_put_failure;
12083
12084 genlmsg_end(msg, hdr);
12085 return genlmsg_reply(msg, info);
12086
12087 nla_put_failure:
12088 kfree_skb(msg);
12089 return -ENOBUFS;
12090 }
12091
12092 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12093 {
12094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12095 struct cfg80211_update_ft_ies_params ft_params;
12096 struct net_device *dev = info->user_ptr[1];
12097
12098 if (!rdev->ops->update_ft_ies)
12099 return -EOPNOTSUPP;
12100
12101 if (!info->attrs[NL80211_ATTR_MDID] ||
12102 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12103 return -EINVAL;
12104
12105 memset(&ft_params, 0, sizeof(ft_params));
12106 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12107 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12108 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12109
12110 return rdev_update_ft_ies(rdev, dev, &ft_params);
12111 }
12112
12113 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12114 struct genl_info *info)
12115 {
12116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12117 struct wireless_dev *wdev = info->user_ptr[1];
12118 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12119 u16 duration;
12120 int ret;
12121
12122 if (!rdev->ops->crit_proto_start)
12123 return -EOPNOTSUPP;
12124
12125 if (WARN_ON(!rdev->ops->crit_proto_stop))
12126 return -EINVAL;
12127
12128 if (rdev->crit_proto_nlportid)
12129 return -EBUSY;
12130
12131 /* determine protocol if provided */
12132 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12133 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12134
12135 if (proto >= NUM_NL80211_CRIT_PROTO)
12136 return -EINVAL;
12137
12138 /* timeout must be provided */
12139 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12140 return -EINVAL;
12141
12142 duration =
12143 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12144
12145 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12146 return -ERANGE;
12147
12148 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12149 if (!ret)
12150 rdev->crit_proto_nlportid = info->snd_portid;
12151
12152 return ret;
12153 }
12154
12155 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12156 struct genl_info *info)
12157 {
12158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159 struct wireless_dev *wdev = info->user_ptr[1];
12160
12161 if (!rdev->ops->crit_proto_stop)
12162 return -EOPNOTSUPP;
12163
12164 if (rdev->crit_proto_nlportid) {
12165 rdev->crit_proto_nlportid = 0;
12166 rdev_crit_proto_stop(rdev, wdev);
12167 }
12168 return 0;
12169 }
12170
12171 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12172 {
12173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12174 struct wireless_dev *wdev =
12175 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12176 int i, err;
12177 u32 vid, subcmd;
12178
12179 if (!rdev->wiphy.vendor_commands)
12180 return -EOPNOTSUPP;
12181
12182 if (IS_ERR(wdev)) {
12183 err = PTR_ERR(wdev);
12184 if (err != -EINVAL)
12185 return err;
12186 wdev = NULL;
12187 } else if (wdev->wiphy != &rdev->wiphy) {
12188 return -EINVAL;
12189 }
12190
12191 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12192 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12193 return -EINVAL;
12194
12195 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12196 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12197 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12198 const struct wiphy_vendor_command *vcmd;
12199 void *data = NULL;
12200 int len = 0;
12201
12202 vcmd = &rdev->wiphy.vendor_commands[i];
12203
12204 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12205 continue;
12206
12207 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12208 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12209 if (!wdev)
12210 return -EINVAL;
12211 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12212 !wdev->netdev)
12213 return -EINVAL;
12214
12215 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12216 if (!wdev_running(wdev))
12217 return -ENETDOWN;
12218 }
12219
12220 if (!vcmd->doit)
12221 return -EOPNOTSUPP;
12222 } else {
12223 wdev = NULL;
12224 }
12225
12226 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12227 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12228 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12229 }
12230
12231 rdev->cur_cmd_info = info;
12232 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12233 data, len);
12234 rdev->cur_cmd_info = NULL;
12235 return err;
12236 }
12237
12238 return -EOPNOTSUPP;
12239 }
12240
12241 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12242 struct netlink_callback *cb,
12243 struct cfg80211_registered_device **rdev,
12244 struct wireless_dev **wdev)
12245 {
12246 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12247 u32 vid, subcmd;
12248 unsigned int i;
12249 int vcmd_idx = -1;
12250 int err;
12251 void *data = NULL;
12252 unsigned int data_len = 0;
12253
12254 if (cb->args[0]) {
12255 /* subtract the 1 again here */
12256 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12257 struct wireless_dev *tmp;
12258
12259 if (!wiphy)
12260 return -ENODEV;
12261 *rdev = wiphy_to_rdev(wiphy);
12262 *wdev = NULL;
12263
12264 if (cb->args[1]) {
12265 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12266 if (tmp->identifier == cb->args[1] - 1) {
12267 *wdev = tmp;
12268 break;
12269 }
12270 }
12271 }
12272
12273 /* keep rtnl locked in successful case */
12274 return 0;
12275 }
12276
12277 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12278 nl80211_fam.maxattr, nl80211_policy, NULL);
12279 if (err)
12280 return err;
12281
12282 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12283 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12284 return -EINVAL;
12285
12286 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12287 if (IS_ERR(*wdev))
12288 *wdev = NULL;
12289
12290 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12291 if (IS_ERR(*rdev))
12292 return PTR_ERR(*rdev);
12293
12294 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12295 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12296
12297 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12298 const struct wiphy_vendor_command *vcmd;
12299
12300 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12301
12302 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12303 continue;
12304
12305 if (!vcmd->dumpit)
12306 return -EOPNOTSUPP;
12307
12308 vcmd_idx = i;
12309 break;
12310 }
12311
12312 if (vcmd_idx < 0)
12313 return -EOPNOTSUPP;
12314
12315 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12316 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12317 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12318 }
12319
12320 /* 0 is the first index - add 1 to parse only once */
12321 cb->args[0] = (*rdev)->wiphy_idx + 1;
12322 /* add 1 to know if it was NULL */
12323 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12324 cb->args[2] = vcmd_idx;
12325 cb->args[3] = (unsigned long)data;
12326 cb->args[4] = data_len;
12327
12328 /* keep rtnl locked in successful case */
12329 return 0;
12330 }
12331
12332 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12333 struct netlink_callback *cb)
12334 {
12335 struct cfg80211_registered_device *rdev;
12336 struct wireless_dev *wdev;
12337 unsigned int vcmd_idx;
12338 const struct wiphy_vendor_command *vcmd;
12339 void *data;
12340 int data_len;
12341 int err;
12342 struct nlattr *vendor_data;
12343
12344 rtnl_lock();
12345 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12346 if (err)
12347 goto out;
12348
12349 vcmd_idx = cb->args[2];
12350 data = (void *)cb->args[3];
12351 data_len = cb->args[4];
12352 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12353
12354 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12355 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12356 if (!wdev) {
12357 err = -EINVAL;
12358 goto out;
12359 }
12360 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12361 !wdev->netdev) {
12362 err = -EINVAL;
12363 goto out;
12364 }
12365
12366 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12367 if (!wdev_running(wdev)) {
12368 err = -ENETDOWN;
12369 goto out;
12370 }
12371 }
12372 }
12373
12374 while (1) {
12375 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12376 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12377 NL80211_CMD_VENDOR);
12378 if (!hdr)
12379 break;
12380
12381 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12382 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12383 wdev_id(wdev),
12384 NL80211_ATTR_PAD))) {
12385 genlmsg_cancel(skb, hdr);
12386 break;
12387 }
12388
12389 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12390 if (!vendor_data) {
12391 genlmsg_cancel(skb, hdr);
12392 break;
12393 }
12394
12395 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12396 (unsigned long *)&cb->args[5]);
12397 nla_nest_end(skb, vendor_data);
12398
12399 if (err == -ENOBUFS || err == -ENOENT) {
12400 genlmsg_cancel(skb, hdr);
12401 break;
12402 } else if (err) {
12403 genlmsg_cancel(skb, hdr);
12404 goto out;
12405 }
12406
12407 genlmsg_end(skb, hdr);
12408 }
12409
12410 err = skb->len;
12411 out:
12412 rtnl_unlock();
12413 return err;
12414 }
12415
12416 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12417 enum nl80211_commands cmd,
12418 enum nl80211_attrs attr,
12419 int approxlen)
12420 {
12421 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12422
12423 if (WARN_ON(!rdev->cur_cmd_info))
12424 return NULL;
12425
12426 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12427 rdev->cur_cmd_info->snd_portid,
12428 rdev->cur_cmd_info->snd_seq,
12429 cmd, attr, NULL, GFP_KERNEL);
12430 }
12431 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12432
12433 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12434 {
12435 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12436 void *hdr = ((void **)skb->cb)[1];
12437 struct nlattr *data = ((void **)skb->cb)[2];
12438
12439 /* clear CB data for netlink core to own from now on */
12440 memset(skb->cb, 0, sizeof(skb->cb));
12441
12442 if (WARN_ON(!rdev->cur_cmd_info)) {
12443 kfree_skb(skb);
12444 return -EINVAL;
12445 }
12446
12447 nla_nest_end(skb, data);
12448 genlmsg_end(skb, hdr);
12449 return genlmsg_reply(skb, rdev->cur_cmd_info);
12450 }
12451 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12452
12453 static int nl80211_set_qos_map(struct sk_buff *skb,
12454 struct genl_info *info)
12455 {
12456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12457 struct cfg80211_qos_map *qos_map = NULL;
12458 struct net_device *dev = info->user_ptr[1];
12459 u8 *pos, len, num_des, des_len, des;
12460 int ret;
12461
12462 if (!rdev->ops->set_qos_map)
12463 return -EOPNOTSUPP;
12464
12465 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12466 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12467 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12468
12469 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12470 len > IEEE80211_QOS_MAP_LEN_MAX)
12471 return -EINVAL;
12472
12473 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12474 if (!qos_map)
12475 return -ENOMEM;
12476
12477 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12478 if (num_des) {
12479 des_len = num_des *
12480 sizeof(struct cfg80211_dscp_exception);
12481 memcpy(qos_map->dscp_exception, pos, des_len);
12482 qos_map->num_des = num_des;
12483 for (des = 0; des < num_des; des++) {
12484 if (qos_map->dscp_exception[des].up > 7) {
12485 kfree(qos_map);
12486 return -EINVAL;
12487 }
12488 }
12489 pos += des_len;
12490 }
12491 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12492 }
12493
12494 wdev_lock(dev->ieee80211_ptr);
12495 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12496 if (!ret)
12497 ret = rdev_set_qos_map(rdev, dev, qos_map);
12498 wdev_unlock(dev->ieee80211_ptr);
12499
12500 kfree(qos_map);
12501 return ret;
12502 }
12503
12504 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12505 {
12506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12507 struct net_device *dev = info->user_ptr[1];
12508 struct wireless_dev *wdev = dev->ieee80211_ptr;
12509 const u8 *peer;
12510 u8 tsid, up;
12511 u16 admitted_time = 0;
12512 int err;
12513
12514 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12515 return -EOPNOTSUPP;
12516
12517 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12518 !info->attrs[NL80211_ATTR_USER_PRIO])
12519 return -EINVAL;
12520
12521 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12522 if (tsid >= IEEE80211_NUM_TIDS)
12523 return -EINVAL;
12524
12525 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12526 if (up >= IEEE80211_NUM_UPS)
12527 return -EINVAL;
12528
12529 /* WMM uses TIDs 0-7 even for TSPEC */
12530 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12531 /* TODO: handle 802.11 TSPEC/admission control
12532 * need more attributes for that (e.g. BA session requirement);
12533 * change the WMM adminssion test above to allow both then
12534 */
12535 return -EINVAL;
12536 }
12537
12538 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12539
12540 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12541 admitted_time =
12542 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12543 if (!admitted_time)
12544 return -EINVAL;
12545 }
12546
12547 wdev_lock(wdev);
12548 switch (wdev->iftype) {
12549 case NL80211_IFTYPE_STATION:
12550 case NL80211_IFTYPE_P2P_CLIENT:
12551 if (wdev->current_bss)
12552 break;
12553 err = -ENOTCONN;
12554 goto out;
12555 default:
12556 err = -EOPNOTSUPP;
12557 goto out;
12558 }
12559
12560 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12561
12562 out:
12563 wdev_unlock(wdev);
12564 return err;
12565 }
12566
12567 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12568 {
12569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12570 struct net_device *dev = info->user_ptr[1];
12571 struct wireless_dev *wdev = dev->ieee80211_ptr;
12572 const u8 *peer;
12573 u8 tsid;
12574 int err;
12575
12576 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12577 return -EINVAL;
12578
12579 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12580 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12581
12582 wdev_lock(wdev);
12583 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12584 wdev_unlock(wdev);
12585
12586 return err;
12587 }
12588
12589 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12590 struct genl_info *info)
12591 {
12592 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12593 struct net_device *dev = info->user_ptr[1];
12594 struct wireless_dev *wdev = dev->ieee80211_ptr;
12595 struct cfg80211_chan_def chandef = {};
12596 const u8 *addr;
12597 u8 oper_class;
12598 int err;
12599
12600 if (!rdev->ops->tdls_channel_switch ||
12601 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12602 return -EOPNOTSUPP;
12603
12604 switch (dev->ieee80211_ptr->iftype) {
12605 case NL80211_IFTYPE_STATION:
12606 case NL80211_IFTYPE_P2P_CLIENT:
12607 break;
12608 default:
12609 return -EOPNOTSUPP;
12610 }
12611
12612 if (!info->attrs[NL80211_ATTR_MAC] ||
12613 !info->attrs[NL80211_ATTR_OPER_CLASS])
12614 return -EINVAL;
12615
12616 err = nl80211_parse_chandef(rdev, info, &chandef);
12617 if (err)
12618 return err;
12619
12620 /*
12621 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12622 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12623 * specification is not defined for them.
12624 */
12625 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12626 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12627 chandef.width != NL80211_CHAN_WIDTH_20)
12628 return -EINVAL;
12629
12630 /* we will be active on the TDLS link */
12631 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12632 wdev->iftype))
12633 return -EINVAL;
12634
12635 /* don't allow switching to DFS channels */
12636 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12637 return -EINVAL;
12638
12639 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12640 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12641
12642 wdev_lock(wdev);
12643 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12644 wdev_unlock(wdev);
12645
12646 return err;
12647 }
12648
12649 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12650 struct genl_info *info)
12651 {
12652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12653 struct net_device *dev = info->user_ptr[1];
12654 struct wireless_dev *wdev = dev->ieee80211_ptr;
12655 const u8 *addr;
12656
12657 if (!rdev->ops->tdls_channel_switch ||
12658 !rdev->ops->tdls_cancel_channel_switch ||
12659 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12660 return -EOPNOTSUPP;
12661
12662 switch (dev->ieee80211_ptr->iftype) {
12663 case NL80211_IFTYPE_STATION:
12664 case NL80211_IFTYPE_P2P_CLIENT:
12665 break;
12666 default:
12667 return -EOPNOTSUPP;
12668 }
12669
12670 if (!info->attrs[NL80211_ATTR_MAC])
12671 return -EINVAL;
12672
12673 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12674
12675 wdev_lock(wdev);
12676 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12677 wdev_unlock(wdev);
12678
12679 return 0;
12680 }
12681
12682 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12683 struct genl_info *info)
12684 {
12685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12686 struct net_device *dev = info->user_ptr[1];
12687 struct wireless_dev *wdev = dev->ieee80211_ptr;
12688 const struct nlattr *nla;
12689 bool enabled;
12690
12691 if (!rdev->ops->set_multicast_to_unicast)
12692 return -EOPNOTSUPP;
12693
12694 if (wdev->iftype != NL80211_IFTYPE_AP &&
12695 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12696 return -EOPNOTSUPP;
12697
12698 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12699 enabled = nla_get_flag(nla);
12700
12701 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12702 }
12703
12704 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12705 {
12706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12707 struct net_device *dev = info->user_ptr[1];
12708 struct wireless_dev *wdev = dev->ieee80211_ptr;
12709 struct cfg80211_pmk_conf pmk_conf = {};
12710 int ret;
12711
12712 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12713 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12714 return -EOPNOTSUPP;
12715
12716 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12717 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12718 return -EOPNOTSUPP;
12719
12720 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12721 return -EINVAL;
12722
12723 wdev_lock(wdev);
12724 if (!wdev->current_bss) {
12725 ret = -ENOTCONN;
12726 goto out;
12727 }
12728
12729 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12730 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12731 ret = -EINVAL;
12732 goto out;
12733 }
12734
12735 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12736 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12737 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12738 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12739 ret = -EINVAL;
12740 goto out;
12741 }
12742
12743 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12744 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12745
12746 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12747 ret = -EINVAL;
12748 goto out;
12749 }
12750
12751 pmk_conf.pmk_r0_name =
12752 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12753 }
12754
12755 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12756 out:
12757 wdev_unlock(wdev);
12758 return ret;
12759 }
12760
12761 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12762 {
12763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12764 struct net_device *dev = info->user_ptr[1];
12765 struct wireless_dev *wdev = dev->ieee80211_ptr;
12766 const u8 *aa;
12767 int ret;
12768
12769 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12770 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12771 return -EOPNOTSUPP;
12772
12773 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12774 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12775 return -EOPNOTSUPP;
12776
12777 if (!info->attrs[NL80211_ATTR_MAC])
12778 return -EINVAL;
12779
12780 wdev_lock(wdev);
12781 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12782 ret = rdev_del_pmk(rdev, dev, aa);
12783 wdev_unlock(wdev);
12784
12785 return ret;
12786 }
12787
12788 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12789 {
12790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12791 struct net_device *dev = info->user_ptr[1];
12792 struct cfg80211_external_auth_params params;
12793
12794 if (!rdev->ops->external_auth)
12795 return -EOPNOTSUPP;
12796
12797 if (!info->attrs[NL80211_ATTR_SSID])
12798 return -EINVAL;
12799
12800 if (!info->attrs[NL80211_ATTR_BSSID])
12801 return -EINVAL;
12802
12803 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12804 return -EINVAL;
12805
12806 memset(&params, 0, sizeof(params));
12807
12808 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12809 if (params.ssid.ssid_len == 0 ||
12810 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12811 return -EINVAL;
12812 memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
12813 params.ssid.ssid_len);
12814
12815 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
12816 ETH_ALEN);
12817
12818 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12819
12820 return rdev_external_auth(rdev, dev, &params);
12821 }
12822
12823 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
12824 {
12825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12826 struct net_device *dev = info->user_ptr[1];
12827 struct wireless_dev *wdev = dev->ieee80211_ptr;
12828 const u8 *buf;
12829 size_t len;
12830 u8 *dest;
12831 u16 proto;
12832 bool noencrypt;
12833 int err;
12834
12835 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12836 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
12837 return -EOPNOTSUPP;
12838
12839 if (!rdev->ops->tx_control_port)
12840 return -EOPNOTSUPP;
12841
12842 if (!info->attrs[NL80211_ATTR_FRAME] ||
12843 !info->attrs[NL80211_ATTR_MAC] ||
12844 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
12845 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
12846 return -EINVAL;
12847 }
12848
12849 wdev_lock(wdev);
12850
12851 switch (wdev->iftype) {
12852 case NL80211_IFTYPE_AP:
12853 case NL80211_IFTYPE_P2P_GO:
12854 case NL80211_IFTYPE_MESH_POINT:
12855 break;
12856 case NL80211_IFTYPE_ADHOC:
12857 case NL80211_IFTYPE_STATION:
12858 case NL80211_IFTYPE_P2P_CLIENT:
12859 if (wdev->current_bss)
12860 break;
12861 err = -ENOTCONN;
12862 goto out;
12863 default:
12864 err = -EOPNOTSUPP;
12865 goto out;
12866 }
12867
12868 wdev_unlock(wdev);
12869
12870 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12871 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12872 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
12873 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
12874 noencrypt =
12875 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
12876
12877 return rdev_tx_control_port(rdev, dev, buf, len,
12878 dest, cpu_to_be16(proto), noencrypt);
12879
12880 out:
12881 wdev_unlock(wdev);
12882 return err;
12883 }
12884
12885 #define NL80211_FLAG_NEED_WIPHY 0x01
12886 #define NL80211_FLAG_NEED_NETDEV 0x02
12887 #define NL80211_FLAG_NEED_RTNL 0x04
12888 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12889 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12890 NL80211_FLAG_CHECK_NETDEV_UP)
12891 #define NL80211_FLAG_NEED_WDEV 0x10
12892 /* If a netdev is associated, it must be UP, P2P must be started */
12893 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12894 NL80211_FLAG_CHECK_NETDEV_UP)
12895 #define NL80211_FLAG_CLEAR_SKB 0x20
12896
12897 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12898 struct genl_info *info)
12899 {
12900 struct cfg80211_registered_device *rdev;
12901 struct wireless_dev *wdev;
12902 struct net_device *dev;
12903 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12904
12905 if (rtnl)
12906 rtnl_lock();
12907
12908 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12909 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12910 if (IS_ERR(rdev)) {
12911 if (rtnl)
12912 rtnl_unlock();
12913 return PTR_ERR(rdev);
12914 }
12915 info->user_ptr[0] = rdev;
12916 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12917 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12918 ASSERT_RTNL();
12919
12920 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12921 info->attrs);
12922 if (IS_ERR(wdev)) {
12923 if (rtnl)
12924 rtnl_unlock();
12925 return PTR_ERR(wdev);
12926 }
12927
12928 dev = wdev->netdev;
12929 rdev = wiphy_to_rdev(wdev->wiphy);
12930
12931 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12932 if (!dev) {
12933 if (rtnl)
12934 rtnl_unlock();
12935 return -EINVAL;
12936 }
12937
12938 info->user_ptr[1] = dev;
12939 } else {
12940 info->user_ptr[1] = wdev;
12941 }
12942
12943 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12944 !wdev_running(wdev)) {
12945 if (rtnl)
12946 rtnl_unlock();
12947 return -ENETDOWN;
12948 }
12949
12950 if (dev)
12951 dev_hold(dev);
12952
12953 info->user_ptr[0] = rdev;
12954 }
12955
12956 return 0;
12957 }
12958
12959 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12960 struct genl_info *info)
12961 {
12962 if (info->user_ptr[1]) {
12963 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12964 struct wireless_dev *wdev = info->user_ptr[1];
12965
12966 if (wdev->netdev)
12967 dev_put(wdev->netdev);
12968 } else {
12969 dev_put(info->user_ptr[1]);
12970 }
12971 }
12972
12973 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12974 rtnl_unlock();
12975
12976 /* If needed, clear the netlink message payload from the SKB
12977 * as it might contain key data that shouldn't stick around on
12978 * the heap after the SKB is freed. The netlink message header
12979 * is still needed for further processing, so leave it intact.
12980 */
12981 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12982 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12983
12984 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12985 }
12986 }
12987
12988 static const struct genl_ops nl80211_ops[] = {
12989 {
12990 .cmd = NL80211_CMD_GET_WIPHY,
12991 .doit = nl80211_get_wiphy,
12992 .dumpit = nl80211_dump_wiphy,
12993 .done = nl80211_dump_wiphy_done,
12994 .policy = nl80211_policy,
12995 /* can be retrieved by unprivileged users */
12996 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12997 NL80211_FLAG_NEED_RTNL,
12998 },
12999 {
13000 .cmd = NL80211_CMD_SET_WIPHY,
13001 .doit = nl80211_set_wiphy,
13002 .policy = nl80211_policy,
13003 .flags = GENL_UNS_ADMIN_PERM,
13004 .internal_flags = NL80211_FLAG_NEED_RTNL,
13005 },
13006 {
13007 .cmd = NL80211_CMD_GET_INTERFACE,
13008 .doit = nl80211_get_interface,
13009 .dumpit = nl80211_dump_interface,
13010 .policy = nl80211_policy,
13011 /* can be retrieved by unprivileged users */
13012 .internal_flags = NL80211_FLAG_NEED_WDEV |
13013 NL80211_FLAG_NEED_RTNL,
13014 },
13015 {
13016 .cmd = NL80211_CMD_SET_INTERFACE,
13017 .doit = nl80211_set_interface,
13018 .policy = nl80211_policy,
13019 .flags = GENL_UNS_ADMIN_PERM,
13020 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13021 NL80211_FLAG_NEED_RTNL,
13022 },
13023 {
13024 .cmd = NL80211_CMD_NEW_INTERFACE,
13025 .doit = nl80211_new_interface,
13026 .policy = nl80211_policy,
13027 .flags = GENL_UNS_ADMIN_PERM,
13028 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13029 NL80211_FLAG_NEED_RTNL,
13030 },
13031 {
13032 .cmd = NL80211_CMD_DEL_INTERFACE,
13033 .doit = nl80211_del_interface,
13034 .policy = nl80211_policy,
13035 .flags = GENL_UNS_ADMIN_PERM,
13036 .internal_flags = NL80211_FLAG_NEED_WDEV |
13037 NL80211_FLAG_NEED_RTNL,
13038 },
13039 {
13040 .cmd = NL80211_CMD_GET_KEY,
13041 .doit = nl80211_get_key,
13042 .policy = nl80211_policy,
13043 .flags = GENL_UNS_ADMIN_PERM,
13044 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13045 NL80211_FLAG_NEED_RTNL,
13046 },
13047 {
13048 .cmd = NL80211_CMD_SET_KEY,
13049 .doit = nl80211_set_key,
13050 .policy = nl80211_policy,
13051 .flags = GENL_UNS_ADMIN_PERM,
13052 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13053 NL80211_FLAG_NEED_RTNL |
13054 NL80211_FLAG_CLEAR_SKB,
13055 },
13056 {
13057 .cmd = NL80211_CMD_NEW_KEY,
13058 .doit = nl80211_new_key,
13059 .policy = nl80211_policy,
13060 .flags = GENL_UNS_ADMIN_PERM,
13061 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13062 NL80211_FLAG_NEED_RTNL |
13063 NL80211_FLAG_CLEAR_SKB,
13064 },
13065 {
13066 .cmd = NL80211_CMD_DEL_KEY,
13067 .doit = nl80211_del_key,
13068 .policy = nl80211_policy,
13069 .flags = GENL_UNS_ADMIN_PERM,
13070 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13071 NL80211_FLAG_NEED_RTNL,
13072 },
13073 {
13074 .cmd = NL80211_CMD_SET_BEACON,
13075 .policy = nl80211_policy,
13076 .flags = GENL_UNS_ADMIN_PERM,
13077 .doit = nl80211_set_beacon,
13078 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13079 NL80211_FLAG_NEED_RTNL,
13080 },
13081 {
13082 .cmd = NL80211_CMD_START_AP,
13083 .policy = nl80211_policy,
13084 .flags = GENL_UNS_ADMIN_PERM,
13085 .doit = nl80211_start_ap,
13086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13087 NL80211_FLAG_NEED_RTNL,
13088 },
13089 {
13090 .cmd = NL80211_CMD_STOP_AP,
13091 .policy = nl80211_policy,
13092 .flags = GENL_UNS_ADMIN_PERM,
13093 .doit = nl80211_stop_ap,
13094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13095 NL80211_FLAG_NEED_RTNL,
13096 },
13097 {
13098 .cmd = NL80211_CMD_GET_STATION,
13099 .doit = nl80211_get_station,
13100 .dumpit = nl80211_dump_station,
13101 .policy = nl80211_policy,
13102 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13103 NL80211_FLAG_NEED_RTNL,
13104 },
13105 {
13106 .cmd = NL80211_CMD_SET_STATION,
13107 .doit = nl80211_set_station,
13108 .policy = nl80211_policy,
13109 .flags = GENL_UNS_ADMIN_PERM,
13110 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13111 NL80211_FLAG_NEED_RTNL,
13112 },
13113 {
13114 .cmd = NL80211_CMD_NEW_STATION,
13115 .doit = nl80211_new_station,
13116 .policy = nl80211_policy,
13117 .flags = GENL_UNS_ADMIN_PERM,
13118 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13119 NL80211_FLAG_NEED_RTNL,
13120 },
13121 {
13122 .cmd = NL80211_CMD_DEL_STATION,
13123 .doit = nl80211_del_station,
13124 .policy = nl80211_policy,
13125 .flags = GENL_UNS_ADMIN_PERM,
13126 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13127 NL80211_FLAG_NEED_RTNL,
13128 },
13129 {
13130 .cmd = NL80211_CMD_GET_MPATH,
13131 .doit = nl80211_get_mpath,
13132 .dumpit = nl80211_dump_mpath,
13133 .policy = nl80211_policy,
13134 .flags = GENL_UNS_ADMIN_PERM,
13135 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13136 NL80211_FLAG_NEED_RTNL,
13137 },
13138 {
13139 .cmd = NL80211_CMD_GET_MPP,
13140 .doit = nl80211_get_mpp,
13141 .dumpit = nl80211_dump_mpp,
13142 .policy = nl80211_policy,
13143 .flags = GENL_UNS_ADMIN_PERM,
13144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13145 NL80211_FLAG_NEED_RTNL,
13146 },
13147 {
13148 .cmd = NL80211_CMD_SET_MPATH,
13149 .doit = nl80211_set_mpath,
13150 .policy = nl80211_policy,
13151 .flags = GENL_UNS_ADMIN_PERM,
13152 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13153 NL80211_FLAG_NEED_RTNL,
13154 },
13155 {
13156 .cmd = NL80211_CMD_NEW_MPATH,
13157 .doit = nl80211_new_mpath,
13158 .policy = nl80211_policy,
13159 .flags = GENL_UNS_ADMIN_PERM,
13160 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13161 NL80211_FLAG_NEED_RTNL,
13162 },
13163 {
13164 .cmd = NL80211_CMD_DEL_MPATH,
13165 .doit = nl80211_del_mpath,
13166 .policy = nl80211_policy,
13167 .flags = GENL_UNS_ADMIN_PERM,
13168 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13169 NL80211_FLAG_NEED_RTNL,
13170 },
13171 {
13172 .cmd = NL80211_CMD_SET_BSS,
13173 .doit = nl80211_set_bss,
13174 .policy = nl80211_policy,
13175 .flags = GENL_UNS_ADMIN_PERM,
13176 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13177 NL80211_FLAG_NEED_RTNL,
13178 },
13179 {
13180 .cmd = NL80211_CMD_GET_REG,
13181 .doit = nl80211_get_reg_do,
13182 .dumpit = nl80211_get_reg_dump,
13183 .policy = nl80211_policy,
13184 .internal_flags = NL80211_FLAG_NEED_RTNL,
13185 /* can be retrieved by unprivileged users */
13186 },
13187 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13188 {
13189 .cmd = NL80211_CMD_SET_REG,
13190 .doit = nl80211_set_reg,
13191 .policy = nl80211_policy,
13192 .flags = GENL_ADMIN_PERM,
13193 .internal_flags = NL80211_FLAG_NEED_RTNL,
13194 },
13195 #endif
13196 {
13197 .cmd = NL80211_CMD_REQ_SET_REG,
13198 .doit = nl80211_req_set_reg,
13199 .policy = nl80211_policy,
13200 .flags = GENL_ADMIN_PERM,
13201 },
13202 {
13203 .cmd = NL80211_CMD_RELOAD_REGDB,
13204 .doit = nl80211_reload_regdb,
13205 .policy = nl80211_policy,
13206 .flags = GENL_ADMIN_PERM,
13207 },
13208 {
13209 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13210 .doit = nl80211_get_mesh_config,
13211 .policy = nl80211_policy,
13212 /* can be retrieved by unprivileged users */
13213 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13214 NL80211_FLAG_NEED_RTNL,
13215 },
13216 {
13217 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13218 .doit = nl80211_update_mesh_config,
13219 .policy = nl80211_policy,
13220 .flags = GENL_UNS_ADMIN_PERM,
13221 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13222 NL80211_FLAG_NEED_RTNL,
13223 },
13224 {
13225 .cmd = NL80211_CMD_TRIGGER_SCAN,
13226 .doit = nl80211_trigger_scan,
13227 .policy = nl80211_policy,
13228 .flags = GENL_UNS_ADMIN_PERM,
13229 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13230 NL80211_FLAG_NEED_RTNL,
13231 },
13232 {
13233 .cmd = NL80211_CMD_ABORT_SCAN,
13234 .doit = nl80211_abort_scan,
13235 .policy = nl80211_policy,
13236 .flags = GENL_UNS_ADMIN_PERM,
13237 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13238 NL80211_FLAG_NEED_RTNL,
13239 },
13240 {
13241 .cmd = NL80211_CMD_GET_SCAN,
13242 .policy = nl80211_policy,
13243 .dumpit = nl80211_dump_scan,
13244 },
13245 {
13246 .cmd = NL80211_CMD_START_SCHED_SCAN,
13247 .doit = nl80211_start_sched_scan,
13248 .policy = nl80211_policy,
13249 .flags = GENL_UNS_ADMIN_PERM,
13250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13251 NL80211_FLAG_NEED_RTNL,
13252 },
13253 {
13254 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13255 .doit = nl80211_stop_sched_scan,
13256 .policy = nl80211_policy,
13257 .flags = GENL_UNS_ADMIN_PERM,
13258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13259 NL80211_FLAG_NEED_RTNL,
13260 },
13261 {
13262 .cmd = NL80211_CMD_AUTHENTICATE,
13263 .doit = nl80211_authenticate,
13264 .policy = nl80211_policy,
13265 .flags = GENL_UNS_ADMIN_PERM,
13266 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13267 NL80211_FLAG_NEED_RTNL |
13268 NL80211_FLAG_CLEAR_SKB,
13269 },
13270 {
13271 .cmd = NL80211_CMD_ASSOCIATE,
13272 .doit = nl80211_associate,
13273 .policy = nl80211_policy,
13274 .flags = GENL_UNS_ADMIN_PERM,
13275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13276 NL80211_FLAG_NEED_RTNL,
13277 },
13278 {
13279 .cmd = NL80211_CMD_DEAUTHENTICATE,
13280 .doit = nl80211_deauthenticate,
13281 .policy = nl80211_policy,
13282 .flags = GENL_UNS_ADMIN_PERM,
13283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13284 NL80211_FLAG_NEED_RTNL,
13285 },
13286 {
13287 .cmd = NL80211_CMD_DISASSOCIATE,
13288 .doit = nl80211_disassociate,
13289 .policy = nl80211_policy,
13290 .flags = GENL_UNS_ADMIN_PERM,
13291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13292 NL80211_FLAG_NEED_RTNL,
13293 },
13294 {
13295 .cmd = NL80211_CMD_JOIN_IBSS,
13296 .doit = nl80211_join_ibss,
13297 .policy = nl80211_policy,
13298 .flags = GENL_UNS_ADMIN_PERM,
13299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13300 NL80211_FLAG_NEED_RTNL,
13301 },
13302 {
13303 .cmd = NL80211_CMD_LEAVE_IBSS,
13304 .doit = nl80211_leave_ibss,
13305 .policy = nl80211_policy,
13306 .flags = GENL_UNS_ADMIN_PERM,
13307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13308 NL80211_FLAG_NEED_RTNL,
13309 },
13310 #ifdef CONFIG_NL80211_TESTMODE
13311 {
13312 .cmd = NL80211_CMD_TESTMODE,
13313 .doit = nl80211_testmode_do,
13314 .dumpit = nl80211_testmode_dump,
13315 .policy = nl80211_policy,
13316 .flags = GENL_UNS_ADMIN_PERM,
13317 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13318 NL80211_FLAG_NEED_RTNL,
13319 },
13320 #endif
13321 {
13322 .cmd = NL80211_CMD_CONNECT,
13323 .doit = nl80211_connect,
13324 .policy = nl80211_policy,
13325 .flags = GENL_UNS_ADMIN_PERM,
13326 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13327 NL80211_FLAG_NEED_RTNL,
13328 },
13329 {
13330 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13331 .doit = nl80211_update_connect_params,
13332 .policy = nl80211_policy,
13333 .flags = GENL_ADMIN_PERM,
13334 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13335 NL80211_FLAG_NEED_RTNL,
13336 },
13337 {
13338 .cmd = NL80211_CMD_DISCONNECT,
13339 .doit = nl80211_disconnect,
13340 .policy = nl80211_policy,
13341 .flags = GENL_UNS_ADMIN_PERM,
13342 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13343 NL80211_FLAG_NEED_RTNL,
13344 },
13345 {
13346 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13347 .doit = nl80211_wiphy_netns,
13348 .policy = nl80211_policy,
13349 .flags = GENL_UNS_ADMIN_PERM,
13350 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13351 NL80211_FLAG_NEED_RTNL,
13352 },
13353 {
13354 .cmd = NL80211_CMD_GET_SURVEY,
13355 .policy = nl80211_policy,
13356 .dumpit = nl80211_dump_survey,
13357 },
13358 {
13359 .cmd = NL80211_CMD_SET_PMKSA,
13360 .doit = nl80211_setdel_pmksa,
13361 .policy = nl80211_policy,
13362 .flags = GENL_UNS_ADMIN_PERM,
13363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13364 NL80211_FLAG_NEED_RTNL,
13365 },
13366 {
13367 .cmd = NL80211_CMD_DEL_PMKSA,
13368 .doit = nl80211_setdel_pmksa,
13369 .policy = nl80211_policy,
13370 .flags = GENL_UNS_ADMIN_PERM,
13371 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13372 NL80211_FLAG_NEED_RTNL,
13373 },
13374 {
13375 .cmd = NL80211_CMD_FLUSH_PMKSA,
13376 .doit = nl80211_flush_pmksa,
13377 .policy = nl80211_policy,
13378 .flags = GENL_UNS_ADMIN_PERM,
13379 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13380 NL80211_FLAG_NEED_RTNL,
13381 },
13382 {
13383 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13384 .doit = nl80211_remain_on_channel,
13385 .policy = nl80211_policy,
13386 .flags = GENL_UNS_ADMIN_PERM,
13387 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13388 NL80211_FLAG_NEED_RTNL,
13389 },
13390 {
13391 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13392 .doit = nl80211_cancel_remain_on_channel,
13393 .policy = nl80211_policy,
13394 .flags = GENL_UNS_ADMIN_PERM,
13395 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13396 NL80211_FLAG_NEED_RTNL,
13397 },
13398 {
13399 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13400 .doit = nl80211_set_tx_bitrate_mask,
13401 .policy = nl80211_policy,
13402 .flags = GENL_UNS_ADMIN_PERM,
13403 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13404 NL80211_FLAG_NEED_RTNL,
13405 },
13406 {
13407 .cmd = NL80211_CMD_REGISTER_FRAME,
13408 .doit = nl80211_register_mgmt,
13409 .policy = nl80211_policy,
13410 .flags = GENL_UNS_ADMIN_PERM,
13411 .internal_flags = NL80211_FLAG_NEED_WDEV |
13412 NL80211_FLAG_NEED_RTNL,
13413 },
13414 {
13415 .cmd = NL80211_CMD_FRAME,
13416 .doit = nl80211_tx_mgmt,
13417 .policy = nl80211_policy,
13418 .flags = GENL_UNS_ADMIN_PERM,
13419 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13420 NL80211_FLAG_NEED_RTNL,
13421 },
13422 {
13423 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13424 .doit = nl80211_tx_mgmt_cancel_wait,
13425 .policy = nl80211_policy,
13426 .flags = GENL_UNS_ADMIN_PERM,
13427 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13428 NL80211_FLAG_NEED_RTNL,
13429 },
13430 {
13431 .cmd = NL80211_CMD_SET_POWER_SAVE,
13432 .doit = nl80211_set_power_save,
13433 .policy = nl80211_policy,
13434 .flags = GENL_UNS_ADMIN_PERM,
13435 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13436 NL80211_FLAG_NEED_RTNL,
13437 },
13438 {
13439 .cmd = NL80211_CMD_GET_POWER_SAVE,
13440 .doit = nl80211_get_power_save,
13441 .policy = nl80211_policy,
13442 /* can be retrieved by unprivileged users */
13443 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13444 NL80211_FLAG_NEED_RTNL,
13445 },
13446 {
13447 .cmd = NL80211_CMD_SET_CQM,
13448 .doit = nl80211_set_cqm,
13449 .policy = nl80211_policy,
13450 .flags = GENL_UNS_ADMIN_PERM,
13451 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13452 NL80211_FLAG_NEED_RTNL,
13453 },
13454 {
13455 .cmd = NL80211_CMD_SET_CHANNEL,
13456 .doit = nl80211_set_channel,
13457 .policy = nl80211_policy,
13458 .flags = GENL_UNS_ADMIN_PERM,
13459 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13460 NL80211_FLAG_NEED_RTNL,
13461 },
13462 {
13463 .cmd = NL80211_CMD_SET_WDS_PEER,
13464 .doit = nl80211_set_wds_peer,
13465 .policy = nl80211_policy,
13466 .flags = GENL_UNS_ADMIN_PERM,
13467 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13468 NL80211_FLAG_NEED_RTNL,
13469 },
13470 {
13471 .cmd = NL80211_CMD_JOIN_MESH,
13472 .doit = nl80211_join_mesh,
13473 .policy = nl80211_policy,
13474 .flags = GENL_UNS_ADMIN_PERM,
13475 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13476 NL80211_FLAG_NEED_RTNL,
13477 },
13478 {
13479 .cmd = NL80211_CMD_LEAVE_MESH,
13480 .doit = nl80211_leave_mesh,
13481 .policy = nl80211_policy,
13482 .flags = GENL_UNS_ADMIN_PERM,
13483 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13484 NL80211_FLAG_NEED_RTNL,
13485 },
13486 {
13487 .cmd = NL80211_CMD_JOIN_OCB,
13488 .doit = nl80211_join_ocb,
13489 .policy = nl80211_policy,
13490 .flags = GENL_UNS_ADMIN_PERM,
13491 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13492 NL80211_FLAG_NEED_RTNL,
13493 },
13494 {
13495 .cmd = NL80211_CMD_LEAVE_OCB,
13496 .doit = nl80211_leave_ocb,
13497 .policy = nl80211_policy,
13498 .flags = GENL_UNS_ADMIN_PERM,
13499 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13500 NL80211_FLAG_NEED_RTNL,
13501 },
13502 #ifdef CONFIG_PM
13503 {
13504 .cmd = NL80211_CMD_GET_WOWLAN,
13505 .doit = nl80211_get_wowlan,
13506 .policy = nl80211_policy,
13507 /* can be retrieved by unprivileged users */
13508 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13509 NL80211_FLAG_NEED_RTNL,
13510 },
13511 {
13512 .cmd = NL80211_CMD_SET_WOWLAN,
13513 .doit = nl80211_set_wowlan,
13514 .policy = nl80211_policy,
13515 .flags = GENL_UNS_ADMIN_PERM,
13516 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13517 NL80211_FLAG_NEED_RTNL,
13518 },
13519 #endif
13520 {
13521 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13522 .doit = nl80211_set_rekey_data,
13523 .policy = nl80211_policy,
13524 .flags = GENL_UNS_ADMIN_PERM,
13525 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13526 NL80211_FLAG_NEED_RTNL |
13527 NL80211_FLAG_CLEAR_SKB,
13528 },
13529 {
13530 .cmd = NL80211_CMD_TDLS_MGMT,
13531 .doit = nl80211_tdls_mgmt,
13532 .policy = nl80211_policy,
13533 .flags = GENL_UNS_ADMIN_PERM,
13534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13535 NL80211_FLAG_NEED_RTNL,
13536 },
13537 {
13538 .cmd = NL80211_CMD_TDLS_OPER,
13539 .doit = nl80211_tdls_oper,
13540 .policy = nl80211_policy,
13541 .flags = GENL_UNS_ADMIN_PERM,
13542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13543 NL80211_FLAG_NEED_RTNL,
13544 },
13545 {
13546 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13547 .doit = nl80211_register_unexpected_frame,
13548 .policy = nl80211_policy,
13549 .flags = GENL_UNS_ADMIN_PERM,
13550 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13551 NL80211_FLAG_NEED_RTNL,
13552 },
13553 {
13554 .cmd = NL80211_CMD_PROBE_CLIENT,
13555 .doit = nl80211_probe_client,
13556 .policy = nl80211_policy,
13557 .flags = GENL_UNS_ADMIN_PERM,
13558 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13559 NL80211_FLAG_NEED_RTNL,
13560 },
13561 {
13562 .cmd = NL80211_CMD_REGISTER_BEACONS,
13563 .doit = nl80211_register_beacons,
13564 .policy = nl80211_policy,
13565 .flags = GENL_UNS_ADMIN_PERM,
13566 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13567 NL80211_FLAG_NEED_RTNL,
13568 },
13569 {
13570 .cmd = NL80211_CMD_SET_NOACK_MAP,
13571 .doit = nl80211_set_noack_map,
13572 .policy = nl80211_policy,
13573 .flags = GENL_UNS_ADMIN_PERM,
13574 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13575 NL80211_FLAG_NEED_RTNL,
13576 },
13577 {
13578 .cmd = NL80211_CMD_START_P2P_DEVICE,
13579 .doit = nl80211_start_p2p_device,
13580 .policy = nl80211_policy,
13581 .flags = GENL_UNS_ADMIN_PERM,
13582 .internal_flags = NL80211_FLAG_NEED_WDEV |
13583 NL80211_FLAG_NEED_RTNL,
13584 },
13585 {
13586 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13587 .doit = nl80211_stop_p2p_device,
13588 .policy = nl80211_policy,
13589 .flags = GENL_UNS_ADMIN_PERM,
13590 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13591 NL80211_FLAG_NEED_RTNL,
13592 },
13593 {
13594 .cmd = NL80211_CMD_START_NAN,
13595 .doit = nl80211_start_nan,
13596 .policy = nl80211_policy,
13597 .flags = GENL_ADMIN_PERM,
13598 .internal_flags = NL80211_FLAG_NEED_WDEV |
13599 NL80211_FLAG_NEED_RTNL,
13600 },
13601 {
13602 .cmd = NL80211_CMD_STOP_NAN,
13603 .doit = nl80211_stop_nan,
13604 .policy = nl80211_policy,
13605 .flags = GENL_ADMIN_PERM,
13606 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13607 NL80211_FLAG_NEED_RTNL,
13608 },
13609 {
13610 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13611 .doit = nl80211_nan_add_func,
13612 .policy = nl80211_policy,
13613 .flags = GENL_ADMIN_PERM,
13614 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13615 NL80211_FLAG_NEED_RTNL,
13616 },
13617 {
13618 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13619 .doit = nl80211_nan_del_func,
13620 .policy = nl80211_policy,
13621 .flags = GENL_ADMIN_PERM,
13622 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13623 NL80211_FLAG_NEED_RTNL,
13624 },
13625 {
13626 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13627 .doit = nl80211_nan_change_config,
13628 .policy = nl80211_policy,
13629 .flags = GENL_ADMIN_PERM,
13630 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13631 NL80211_FLAG_NEED_RTNL,
13632 },
13633 {
13634 .cmd = NL80211_CMD_SET_MCAST_RATE,
13635 .doit = nl80211_set_mcast_rate,
13636 .policy = nl80211_policy,
13637 .flags = GENL_UNS_ADMIN_PERM,
13638 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13639 NL80211_FLAG_NEED_RTNL,
13640 },
13641 {
13642 .cmd = NL80211_CMD_SET_MAC_ACL,
13643 .doit = nl80211_set_mac_acl,
13644 .policy = nl80211_policy,
13645 .flags = GENL_UNS_ADMIN_PERM,
13646 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13647 NL80211_FLAG_NEED_RTNL,
13648 },
13649 {
13650 .cmd = NL80211_CMD_RADAR_DETECT,
13651 .doit = nl80211_start_radar_detection,
13652 .policy = nl80211_policy,
13653 .flags = GENL_UNS_ADMIN_PERM,
13654 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13655 NL80211_FLAG_NEED_RTNL,
13656 },
13657 {
13658 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13659 .doit = nl80211_get_protocol_features,
13660 .policy = nl80211_policy,
13661 },
13662 {
13663 .cmd = NL80211_CMD_UPDATE_FT_IES,
13664 .doit = nl80211_update_ft_ies,
13665 .policy = nl80211_policy,
13666 .flags = GENL_UNS_ADMIN_PERM,
13667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13668 NL80211_FLAG_NEED_RTNL,
13669 },
13670 {
13671 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13672 .doit = nl80211_crit_protocol_start,
13673 .policy = nl80211_policy,
13674 .flags = GENL_UNS_ADMIN_PERM,
13675 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13676 NL80211_FLAG_NEED_RTNL,
13677 },
13678 {
13679 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13680 .doit = nl80211_crit_protocol_stop,
13681 .policy = nl80211_policy,
13682 .flags = GENL_UNS_ADMIN_PERM,
13683 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13684 NL80211_FLAG_NEED_RTNL,
13685 },
13686 {
13687 .cmd = NL80211_CMD_GET_COALESCE,
13688 .doit = nl80211_get_coalesce,
13689 .policy = nl80211_policy,
13690 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13691 NL80211_FLAG_NEED_RTNL,
13692 },
13693 {
13694 .cmd = NL80211_CMD_SET_COALESCE,
13695 .doit = nl80211_set_coalesce,
13696 .policy = nl80211_policy,
13697 .flags = GENL_UNS_ADMIN_PERM,
13698 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13699 NL80211_FLAG_NEED_RTNL,
13700 },
13701 {
13702 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13703 .doit = nl80211_channel_switch,
13704 .policy = nl80211_policy,
13705 .flags = GENL_UNS_ADMIN_PERM,
13706 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13707 NL80211_FLAG_NEED_RTNL,
13708 },
13709 {
13710 .cmd = NL80211_CMD_VENDOR,
13711 .doit = nl80211_vendor_cmd,
13712 .dumpit = nl80211_vendor_cmd_dump,
13713 .policy = nl80211_policy,
13714 .flags = GENL_UNS_ADMIN_PERM,
13715 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13716 NL80211_FLAG_NEED_RTNL,
13717 },
13718 {
13719 .cmd = NL80211_CMD_SET_QOS_MAP,
13720 .doit = nl80211_set_qos_map,
13721 .policy = nl80211_policy,
13722 .flags = GENL_UNS_ADMIN_PERM,
13723 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13724 NL80211_FLAG_NEED_RTNL,
13725 },
13726 {
13727 .cmd = NL80211_CMD_ADD_TX_TS,
13728 .doit = nl80211_add_tx_ts,
13729 .policy = nl80211_policy,
13730 .flags = GENL_UNS_ADMIN_PERM,
13731 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13732 NL80211_FLAG_NEED_RTNL,
13733 },
13734 {
13735 .cmd = NL80211_CMD_DEL_TX_TS,
13736 .doit = nl80211_del_tx_ts,
13737 .policy = nl80211_policy,
13738 .flags = GENL_UNS_ADMIN_PERM,
13739 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13740 NL80211_FLAG_NEED_RTNL,
13741 },
13742 {
13743 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13744 .doit = nl80211_tdls_channel_switch,
13745 .policy = nl80211_policy,
13746 .flags = GENL_UNS_ADMIN_PERM,
13747 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13748 NL80211_FLAG_NEED_RTNL,
13749 },
13750 {
13751 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13752 .doit = nl80211_tdls_cancel_channel_switch,
13753 .policy = nl80211_policy,
13754 .flags = GENL_UNS_ADMIN_PERM,
13755 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13756 NL80211_FLAG_NEED_RTNL,
13757 },
13758 {
13759 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13760 .doit = nl80211_set_multicast_to_unicast,
13761 .policy = nl80211_policy,
13762 .flags = GENL_UNS_ADMIN_PERM,
13763 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13764 NL80211_FLAG_NEED_RTNL,
13765 },
13766 {
13767 .cmd = NL80211_CMD_SET_PMK,
13768 .doit = nl80211_set_pmk,
13769 .policy = nl80211_policy,
13770 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13771 NL80211_FLAG_NEED_RTNL,
13772 },
13773 {
13774 .cmd = NL80211_CMD_DEL_PMK,
13775 .doit = nl80211_del_pmk,
13776 .policy = nl80211_policy,
13777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13778 NL80211_FLAG_NEED_RTNL,
13779 },
13780 {
13781 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13782 .doit = nl80211_external_auth,
13783 .policy = nl80211_policy,
13784 .flags = GENL_ADMIN_PERM,
13785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13786 NL80211_FLAG_NEED_RTNL,
13787 },
13788 {
13789 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13790 .doit = nl80211_tx_control_port,
13791 .policy = nl80211_policy,
13792 .flags = GENL_UNS_ADMIN_PERM,
13793 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13794 NL80211_FLAG_NEED_RTNL,
13795 },
13796 };
13797
13798 static struct genl_family nl80211_fam __ro_after_init = {
13799 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13800 .hdrsize = 0, /* no private header */
13801 .version = 1, /* no particular meaning now */
13802 .maxattr = NL80211_ATTR_MAX,
13803 .netnsok = true,
13804 .pre_doit = nl80211_pre_doit,
13805 .post_doit = nl80211_post_doit,
13806 .module = THIS_MODULE,
13807 .ops = nl80211_ops,
13808 .n_ops = ARRAY_SIZE(nl80211_ops),
13809 .mcgrps = nl80211_mcgrps,
13810 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13811 };
13812
13813 /* notification functions */
13814
13815 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13816 enum nl80211_commands cmd)
13817 {
13818 struct sk_buff *msg;
13819 struct nl80211_dump_wiphy_state state = {};
13820
13821 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13822 cmd != NL80211_CMD_DEL_WIPHY);
13823
13824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13825 if (!msg)
13826 return;
13827
13828 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13829 nlmsg_free(msg);
13830 return;
13831 }
13832
13833 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13834 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13835 }
13836
13837 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13838 struct wireless_dev *wdev,
13839 enum nl80211_commands cmd)
13840 {
13841 struct sk_buff *msg;
13842
13843 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13844 cmd != NL80211_CMD_DEL_INTERFACE);
13845
13846 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13847 if (!msg)
13848 return;
13849
13850 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13851 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13852 nlmsg_free(msg);
13853 return;
13854 }
13855
13856 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13857 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13858 }
13859
13860 static int nl80211_add_scan_req(struct sk_buff *msg,
13861 struct cfg80211_registered_device *rdev)
13862 {
13863 struct cfg80211_scan_request *req = rdev->scan_req;
13864 struct nlattr *nest;
13865 int i;
13866
13867 if (WARN_ON(!req))
13868 return 0;
13869
13870 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13871 if (!nest)
13872 goto nla_put_failure;
13873 for (i = 0; i < req->n_ssids; i++) {
13874 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13875 goto nla_put_failure;
13876 }
13877 nla_nest_end(msg, nest);
13878
13879 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13880 if (!nest)
13881 goto nla_put_failure;
13882 for (i = 0; i < req->n_channels; i++) {
13883 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13884 goto nla_put_failure;
13885 }
13886 nla_nest_end(msg, nest);
13887
13888 if (req->ie &&
13889 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13890 goto nla_put_failure;
13891
13892 if (req->flags &&
13893 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13894 goto nla_put_failure;
13895
13896 if (req->info.scan_start_tsf &&
13897 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13898 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13899 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13900 req->info.tsf_bssid)))
13901 goto nla_put_failure;
13902
13903 return 0;
13904 nla_put_failure:
13905 return -ENOBUFS;
13906 }
13907
13908 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13909 struct cfg80211_registered_device *rdev,
13910 struct wireless_dev *wdev,
13911 u32 portid, u32 seq, int flags,
13912 u32 cmd)
13913 {
13914 void *hdr;
13915
13916 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13917 if (!hdr)
13918 return -1;
13919
13920 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13921 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13922 wdev->netdev->ifindex)) ||
13923 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13924 NL80211_ATTR_PAD))
13925 goto nla_put_failure;
13926
13927 /* ignore errors and send incomplete event anyway */
13928 nl80211_add_scan_req(msg, rdev);
13929
13930 genlmsg_end(msg, hdr);
13931 return 0;
13932
13933 nla_put_failure:
13934 genlmsg_cancel(msg, hdr);
13935 return -EMSGSIZE;
13936 }
13937
13938 static int
13939 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13940 struct cfg80211_sched_scan_request *req, u32 cmd)
13941 {
13942 void *hdr;
13943
13944 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13945 if (!hdr)
13946 return -1;
13947
13948 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13949 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13951 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13952 NL80211_ATTR_PAD))
13953 goto nla_put_failure;
13954
13955 genlmsg_end(msg, hdr);
13956 return 0;
13957
13958 nla_put_failure:
13959 genlmsg_cancel(msg, hdr);
13960 return -EMSGSIZE;
13961 }
13962
13963 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13964 struct wireless_dev *wdev)
13965 {
13966 struct sk_buff *msg;
13967
13968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13969 if (!msg)
13970 return;
13971
13972 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13973 NL80211_CMD_TRIGGER_SCAN) < 0) {
13974 nlmsg_free(msg);
13975 return;
13976 }
13977
13978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13979 NL80211_MCGRP_SCAN, GFP_KERNEL);
13980 }
13981
13982 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13983 struct wireless_dev *wdev, bool aborted)
13984 {
13985 struct sk_buff *msg;
13986
13987 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13988 if (!msg)
13989 return NULL;
13990
13991 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13992 aborted ? NL80211_CMD_SCAN_ABORTED :
13993 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13994 nlmsg_free(msg);
13995 return NULL;
13996 }
13997
13998 return msg;
13999 }
14000
14001 /* send message created by nl80211_build_scan_msg() */
14002 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14003 struct sk_buff *msg)
14004 {
14005 if (!msg)
14006 return;
14007
14008 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14009 NL80211_MCGRP_SCAN, GFP_KERNEL);
14010 }
14011
14012 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14013 {
14014 struct sk_buff *msg;
14015
14016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14017 if (!msg)
14018 return;
14019
14020 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14021 nlmsg_free(msg);
14022 return;
14023 }
14024
14025 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14026 NL80211_MCGRP_SCAN, GFP_KERNEL);
14027 }
14028
14029 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14030 struct regulatory_request *request)
14031 {
14032 /* Userspace can always count this one always being set */
14033 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14034 goto nla_put_failure;
14035
14036 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14037 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14038 NL80211_REGDOM_TYPE_WORLD))
14039 goto nla_put_failure;
14040 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14041 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14042 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14043 goto nla_put_failure;
14044 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14045 request->intersect) {
14046 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14047 NL80211_REGDOM_TYPE_INTERSECTION))
14048 goto nla_put_failure;
14049 } else {
14050 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14051 NL80211_REGDOM_TYPE_COUNTRY) ||
14052 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14053 request->alpha2))
14054 goto nla_put_failure;
14055 }
14056
14057 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14058 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14059
14060 if (wiphy &&
14061 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14062 goto nla_put_failure;
14063
14064 if (wiphy &&
14065 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14066 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14067 goto nla_put_failure;
14068 }
14069
14070 return true;
14071
14072 nla_put_failure:
14073 return false;
14074 }
14075
14076 /*
14077 * This can happen on global regulatory changes or device specific settings
14078 * based on custom regulatory domains.
14079 */
14080 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14081 struct regulatory_request *request)
14082 {
14083 struct sk_buff *msg;
14084 void *hdr;
14085
14086 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14087 if (!msg)
14088 return;
14089
14090 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14091 if (!hdr) {
14092 nlmsg_free(msg);
14093 return;
14094 }
14095
14096 if (nl80211_reg_change_event_fill(msg, request) == false)
14097 goto nla_put_failure;
14098
14099 genlmsg_end(msg, hdr);
14100
14101 rcu_read_lock();
14102 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14103 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14104 rcu_read_unlock();
14105
14106 return;
14107
14108 nla_put_failure:
14109 nlmsg_free(msg);
14110 }
14111
14112 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14113 struct net_device *netdev,
14114 const u8 *buf, size_t len,
14115 enum nl80211_commands cmd, gfp_t gfp,
14116 int uapsd_queues)
14117 {
14118 struct sk_buff *msg;
14119 void *hdr;
14120
14121 msg = nlmsg_new(100 + len, gfp);
14122 if (!msg)
14123 return;
14124
14125 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14126 if (!hdr) {
14127 nlmsg_free(msg);
14128 return;
14129 }
14130
14131 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14132 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14133 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14134 goto nla_put_failure;
14135
14136 if (uapsd_queues >= 0) {
14137 struct nlattr *nla_wmm =
14138 nla_nest_start(msg, NL80211_ATTR_STA_WME);
14139 if (!nla_wmm)
14140 goto nla_put_failure;
14141
14142 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14143 uapsd_queues))
14144 goto nla_put_failure;
14145
14146 nla_nest_end(msg, nla_wmm);
14147 }
14148
14149 genlmsg_end(msg, hdr);
14150
14151 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14152 NL80211_MCGRP_MLME, gfp);
14153 return;
14154
14155 nla_put_failure:
14156 nlmsg_free(msg);
14157 }
14158
14159 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14160 struct net_device *netdev, const u8 *buf,
14161 size_t len, gfp_t gfp)
14162 {
14163 nl80211_send_mlme_event(rdev, netdev, buf, len,
14164 NL80211_CMD_AUTHENTICATE, gfp, -1);
14165 }
14166
14167 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14168 struct net_device *netdev, const u8 *buf,
14169 size_t len, gfp_t gfp, int uapsd_queues)
14170 {
14171 nl80211_send_mlme_event(rdev, netdev, buf, len,
14172 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14173 }
14174
14175 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14176 struct net_device *netdev, const u8 *buf,
14177 size_t len, gfp_t gfp)
14178 {
14179 nl80211_send_mlme_event(rdev, netdev, buf, len,
14180 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14181 }
14182
14183 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14184 struct net_device *netdev, const u8 *buf,
14185 size_t len, gfp_t gfp)
14186 {
14187 nl80211_send_mlme_event(rdev, netdev, buf, len,
14188 NL80211_CMD_DISASSOCIATE, gfp, -1);
14189 }
14190
14191 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14192 size_t len)
14193 {
14194 struct wireless_dev *wdev = dev->ieee80211_ptr;
14195 struct wiphy *wiphy = wdev->wiphy;
14196 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14197 const struct ieee80211_mgmt *mgmt = (void *)buf;
14198 u32 cmd;
14199
14200 if (WARN_ON(len < 2))
14201 return;
14202
14203 if (ieee80211_is_deauth(mgmt->frame_control))
14204 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14205 else
14206 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14207
14208 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14209 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14210 }
14211 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14212
14213 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14214 struct net_device *netdev, int cmd,
14215 const u8 *addr, gfp_t gfp)
14216 {
14217 struct sk_buff *msg;
14218 void *hdr;
14219
14220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14221 if (!msg)
14222 return;
14223
14224 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14225 if (!hdr) {
14226 nlmsg_free(msg);
14227 return;
14228 }
14229
14230 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14231 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14232 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14233 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14234 goto nla_put_failure;
14235
14236 genlmsg_end(msg, hdr);
14237
14238 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14239 NL80211_MCGRP_MLME, gfp);
14240 return;
14241
14242 nla_put_failure:
14243 nlmsg_free(msg);
14244 }
14245
14246 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14247 struct net_device *netdev, const u8 *addr,
14248 gfp_t gfp)
14249 {
14250 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14251 addr, gfp);
14252 }
14253
14254 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14255 struct net_device *netdev, const u8 *addr,
14256 gfp_t gfp)
14257 {
14258 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14259 addr, gfp);
14260 }
14261
14262 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14263 struct net_device *netdev,
14264 struct cfg80211_connect_resp_params *cr,
14265 gfp_t gfp)
14266 {
14267 struct sk_buff *msg;
14268 void *hdr;
14269
14270 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14271 cr->fils.kek_len + cr->fils.pmk_len +
14272 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14273 if (!msg)
14274 return;
14275
14276 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14277 if (!hdr) {
14278 nlmsg_free(msg);
14279 return;
14280 }
14281
14282 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14283 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14284 (cr->bssid &&
14285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14286 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14287 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14288 cr->status) ||
14289 (cr->status < 0 &&
14290 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14291 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14292 cr->timeout_reason))) ||
14293 (cr->req_ie &&
14294 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14295 (cr->resp_ie &&
14296 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14297 cr->resp_ie)) ||
14298 (cr->fils.update_erp_next_seq_num &&
14299 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14300 cr->fils.erp_next_seq_num)) ||
14301 (cr->status == WLAN_STATUS_SUCCESS &&
14302 ((cr->fils.kek &&
14303 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14304 cr->fils.kek)) ||
14305 (cr->fils.pmk &&
14306 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14307 (cr->fils.pmkid &&
14308 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14309 goto nla_put_failure;
14310
14311 genlmsg_end(msg, hdr);
14312
14313 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14314 NL80211_MCGRP_MLME, gfp);
14315 return;
14316
14317 nla_put_failure:
14318 nlmsg_free(msg);
14319 }
14320
14321 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14322 struct net_device *netdev,
14323 struct cfg80211_roam_info *info, gfp_t gfp)
14324 {
14325 struct sk_buff *msg;
14326 void *hdr;
14327 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14328
14329 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14330 info->fils.kek_len + info->fils.pmk_len +
14331 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14332 if (!msg)
14333 return;
14334
14335 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14336 if (!hdr) {
14337 nlmsg_free(msg);
14338 return;
14339 }
14340
14341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14342 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14343 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14344 (info->req_ie &&
14345 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14346 info->req_ie)) ||
14347 (info->resp_ie &&
14348 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14349 info->resp_ie)) ||
14350 (info->fils.update_erp_next_seq_num &&
14351 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14352 info->fils.erp_next_seq_num)) ||
14353 (info->fils.kek &&
14354 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14355 info->fils.kek)) ||
14356 (info->fils.pmk &&
14357 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14358 (info->fils.pmkid &&
14359 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14360 goto nla_put_failure;
14361
14362 genlmsg_end(msg, hdr);
14363
14364 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14365 NL80211_MCGRP_MLME, gfp);
14366 return;
14367
14368 nla_put_failure:
14369 nlmsg_free(msg);
14370 }
14371
14372 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14373 struct net_device *netdev, const u8 *bssid)
14374 {
14375 struct sk_buff *msg;
14376 void *hdr;
14377
14378 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14379 if (!msg)
14380 return;
14381
14382 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14383 if (!hdr) {
14384 nlmsg_free(msg);
14385 return;
14386 }
14387
14388 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14389 goto nla_put_failure;
14390
14391 genlmsg_end(msg, hdr);
14392
14393 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14394 NL80211_MCGRP_MLME, GFP_KERNEL);
14395 return;
14396
14397 nla_put_failure:
14398 nlmsg_free(msg);
14399 }
14400
14401 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14402 struct net_device *netdev, u16 reason,
14403 const u8 *ie, size_t ie_len, bool from_ap)
14404 {
14405 struct sk_buff *msg;
14406 void *hdr;
14407
14408 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14409 if (!msg)
14410 return;
14411
14412 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14413 if (!hdr) {
14414 nlmsg_free(msg);
14415 return;
14416 }
14417
14418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14419 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14420 (reason &&
14421 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14422 (from_ap &&
14423 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14424 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14425 goto nla_put_failure;
14426
14427 genlmsg_end(msg, hdr);
14428
14429 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14430 NL80211_MCGRP_MLME, GFP_KERNEL);
14431 return;
14432
14433 nla_put_failure:
14434 nlmsg_free(msg);
14435 }
14436
14437 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14438 struct net_device *netdev, const u8 *bssid,
14439 gfp_t gfp)
14440 {
14441 struct sk_buff *msg;
14442 void *hdr;
14443
14444 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14445 if (!msg)
14446 return;
14447
14448 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14449 if (!hdr) {
14450 nlmsg_free(msg);
14451 return;
14452 }
14453
14454 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14455 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14456 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14457 goto nla_put_failure;
14458
14459 genlmsg_end(msg, hdr);
14460
14461 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14462 NL80211_MCGRP_MLME, gfp);
14463 return;
14464
14465 nla_put_failure:
14466 nlmsg_free(msg);
14467 }
14468
14469 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14470 const u8* ie, u8 ie_len, gfp_t gfp)
14471 {
14472 struct wireless_dev *wdev = dev->ieee80211_ptr;
14473 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14474 struct sk_buff *msg;
14475 void *hdr;
14476
14477 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14478 return;
14479
14480 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14481
14482 msg = nlmsg_new(100 + ie_len, gfp);
14483 if (!msg)
14484 return;
14485
14486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14487 if (!hdr) {
14488 nlmsg_free(msg);
14489 return;
14490 }
14491
14492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14493 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14494 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14495 (ie_len && ie &&
14496 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14497 goto nla_put_failure;
14498
14499 genlmsg_end(msg, hdr);
14500
14501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14502 NL80211_MCGRP_MLME, gfp);
14503 return;
14504
14505 nla_put_failure:
14506 nlmsg_free(msg);
14507 }
14508 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14509
14510 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14511 struct net_device *netdev, const u8 *addr,
14512 enum nl80211_key_type key_type, int key_id,
14513 const u8 *tsc, gfp_t gfp)
14514 {
14515 struct sk_buff *msg;
14516 void *hdr;
14517
14518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14519 if (!msg)
14520 return;
14521
14522 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14523 if (!hdr) {
14524 nlmsg_free(msg);
14525 return;
14526 }
14527
14528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14530 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14531 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14532 (key_id != -1 &&
14533 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14534 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14535 goto nla_put_failure;
14536
14537 genlmsg_end(msg, hdr);
14538
14539 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14540 NL80211_MCGRP_MLME, gfp);
14541 return;
14542
14543 nla_put_failure:
14544 nlmsg_free(msg);
14545 }
14546
14547 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14548 struct ieee80211_channel *channel_before,
14549 struct ieee80211_channel *channel_after)
14550 {
14551 struct sk_buff *msg;
14552 void *hdr;
14553 struct nlattr *nl_freq;
14554
14555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14556 if (!msg)
14557 return;
14558
14559 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14560 if (!hdr) {
14561 nlmsg_free(msg);
14562 return;
14563 }
14564
14565 /*
14566 * Since we are applying the beacon hint to a wiphy we know its
14567 * wiphy_idx is valid
14568 */
14569 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14570 goto nla_put_failure;
14571
14572 /* Before */
14573 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14574 if (!nl_freq)
14575 goto nla_put_failure;
14576
14577 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14578 goto nla_put_failure;
14579 nla_nest_end(msg, nl_freq);
14580
14581 /* After */
14582 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14583 if (!nl_freq)
14584 goto nla_put_failure;
14585
14586 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14587 goto nla_put_failure;
14588 nla_nest_end(msg, nl_freq);
14589
14590 genlmsg_end(msg, hdr);
14591
14592 rcu_read_lock();
14593 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14594 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14595 rcu_read_unlock();
14596
14597 return;
14598
14599 nla_put_failure:
14600 nlmsg_free(msg);
14601 }
14602
14603 static void nl80211_send_remain_on_chan_event(
14604 int cmd, struct cfg80211_registered_device *rdev,
14605 struct wireless_dev *wdev, u64 cookie,
14606 struct ieee80211_channel *chan,
14607 unsigned int duration, gfp_t gfp)
14608 {
14609 struct sk_buff *msg;
14610 void *hdr;
14611
14612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14613 if (!msg)
14614 return;
14615
14616 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14617 if (!hdr) {
14618 nlmsg_free(msg);
14619 return;
14620 }
14621
14622 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14623 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14624 wdev->netdev->ifindex)) ||
14625 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14626 NL80211_ATTR_PAD) ||
14627 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14628 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14629 NL80211_CHAN_NO_HT) ||
14630 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14631 NL80211_ATTR_PAD))
14632 goto nla_put_failure;
14633
14634 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14635 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14636 goto nla_put_failure;
14637
14638 genlmsg_end(msg, hdr);
14639
14640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14641 NL80211_MCGRP_MLME, gfp);
14642 return;
14643
14644 nla_put_failure:
14645 nlmsg_free(msg);
14646 }
14647
14648 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14649 struct ieee80211_channel *chan,
14650 unsigned int duration, gfp_t gfp)
14651 {
14652 struct wiphy *wiphy = wdev->wiphy;
14653 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14654
14655 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14656 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14657 rdev, wdev, cookie, chan,
14658 duration, gfp);
14659 }
14660 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14661
14662 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14663 struct ieee80211_channel *chan,
14664 gfp_t gfp)
14665 {
14666 struct wiphy *wiphy = wdev->wiphy;
14667 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14668
14669 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14670 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14671 rdev, wdev, cookie, chan, 0, gfp);
14672 }
14673 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14674
14675 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14676 struct station_info *sinfo, gfp_t gfp)
14677 {
14678 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14679 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14680 struct sk_buff *msg;
14681
14682 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14683
14684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14685 if (!msg)
14686 return;
14687
14688 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14689 rdev, dev, mac_addr, sinfo) < 0) {
14690 nlmsg_free(msg);
14691 return;
14692 }
14693
14694 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14695 NL80211_MCGRP_MLME, gfp);
14696 }
14697 EXPORT_SYMBOL(cfg80211_new_sta);
14698
14699 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14700 struct station_info *sinfo, gfp_t gfp)
14701 {
14702 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14703 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14704 struct sk_buff *msg;
14705 struct station_info empty_sinfo = {};
14706
14707 if (!sinfo)
14708 sinfo = &empty_sinfo;
14709
14710 trace_cfg80211_del_sta(dev, mac_addr);
14711
14712 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14713 if (!msg) {
14714 cfg80211_sinfo_release_content(sinfo);
14715 return;
14716 }
14717
14718 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14719 rdev, dev, mac_addr, sinfo) < 0) {
14720 nlmsg_free(msg);
14721 return;
14722 }
14723
14724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14725 NL80211_MCGRP_MLME, gfp);
14726 }
14727 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14728
14729 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14730 enum nl80211_connect_failed_reason reason,
14731 gfp_t gfp)
14732 {
14733 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14735 struct sk_buff *msg;
14736 void *hdr;
14737
14738 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14739 if (!msg)
14740 return;
14741
14742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14743 if (!hdr) {
14744 nlmsg_free(msg);
14745 return;
14746 }
14747
14748 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14749 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14750 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14751 goto nla_put_failure;
14752
14753 genlmsg_end(msg, hdr);
14754
14755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14756 NL80211_MCGRP_MLME, gfp);
14757 return;
14758
14759 nla_put_failure:
14760 nlmsg_free(msg);
14761 }
14762 EXPORT_SYMBOL(cfg80211_conn_failed);
14763
14764 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14765 const u8 *addr, gfp_t gfp)
14766 {
14767 struct wireless_dev *wdev = dev->ieee80211_ptr;
14768 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14769 struct sk_buff *msg;
14770 void *hdr;
14771 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14772
14773 if (!nlportid)
14774 return false;
14775
14776 msg = nlmsg_new(100, gfp);
14777 if (!msg)
14778 return true;
14779
14780 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14781 if (!hdr) {
14782 nlmsg_free(msg);
14783 return true;
14784 }
14785
14786 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14787 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14788 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14789 goto nla_put_failure;
14790
14791 genlmsg_end(msg, hdr);
14792 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14793 return true;
14794
14795 nla_put_failure:
14796 nlmsg_free(msg);
14797 return true;
14798 }
14799
14800 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14801 const u8 *addr, gfp_t gfp)
14802 {
14803 struct wireless_dev *wdev = dev->ieee80211_ptr;
14804 bool ret;
14805
14806 trace_cfg80211_rx_spurious_frame(dev, addr);
14807
14808 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14809 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14810 trace_cfg80211_return_bool(false);
14811 return false;
14812 }
14813 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14814 addr, gfp);
14815 trace_cfg80211_return_bool(ret);
14816 return ret;
14817 }
14818 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14819
14820 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14821 const u8 *addr, gfp_t gfp)
14822 {
14823 struct wireless_dev *wdev = dev->ieee80211_ptr;
14824 bool ret;
14825
14826 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14827
14828 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14829 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14830 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14831 trace_cfg80211_return_bool(false);
14832 return false;
14833 }
14834 ret = __nl80211_unexpected_frame(dev,
14835 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14836 addr, gfp);
14837 trace_cfg80211_return_bool(ret);
14838 return ret;
14839 }
14840 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14841
14842 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14843 struct wireless_dev *wdev, u32 nlportid,
14844 int freq, int sig_dbm,
14845 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14846 {
14847 struct net_device *netdev = wdev->netdev;
14848 struct sk_buff *msg;
14849 void *hdr;
14850
14851 msg = nlmsg_new(100 + len, gfp);
14852 if (!msg)
14853 return -ENOMEM;
14854
14855 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14856 if (!hdr) {
14857 nlmsg_free(msg);
14858 return -ENOMEM;
14859 }
14860
14861 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14862 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14863 netdev->ifindex)) ||
14864 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14865 NL80211_ATTR_PAD) ||
14866 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14867 (sig_dbm &&
14868 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14869 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14870 (flags &&
14871 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14872 goto nla_put_failure;
14873
14874 genlmsg_end(msg, hdr);
14875
14876 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14877
14878 nla_put_failure:
14879 nlmsg_free(msg);
14880 return -ENOBUFS;
14881 }
14882
14883 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14884 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14885 {
14886 struct wiphy *wiphy = wdev->wiphy;
14887 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14888 struct net_device *netdev = wdev->netdev;
14889 struct sk_buff *msg;
14890 void *hdr;
14891
14892 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14893
14894 msg = nlmsg_new(100 + len, gfp);
14895 if (!msg)
14896 return;
14897
14898 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14899 if (!hdr) {
14900 nlmsg_free(msg);
14901 return;
14902 }
14903
14904 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14905 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14906 netdev->ifindex)) ||
14907 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14908 NL80211_ATTR_PAD) ||
14909 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14910 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14911 NL80211_ATTR_PAD) ||
14912 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14913 goto nla_put_failure;
14914
14915 genlmsg_end(msg, hdr);
14916
14917 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14918 NL80211_MCGRP_MLME, gfp);
14919 return;
14920
14921 nla_put_failure:
14922 nlmsg_free(msg);
14923 }
14924 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14925
14926 static int __nl80211_rx_control_port(struct net_device *dev,
14927 struct sk_buff *skb,
14928 bool unencrypted, gfp_t gfp)
14929 {
14930 struct wireless_dev *wdev = dev->ieee80211_ptr;
14931 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14932 struct ethhdr *ehdr = eth_hdr(skb);
14933 const u8 *addr = ehdr->h_source;
14934 u16 proto = be16_to_cpu(skb->protocol);
14935 struct sk_buff *msg;
14936 void *hdr;
14937 struct nlattr *frame;
14938
14939 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
14940
14941 if (!nlportid)
14942 return -ENOENT;
14943
14944 msg = nlmsg_new(100 + skb->len, gfp);
14945 if (!msg)
14946 return -ENOMEM;
14947
14948 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
14949 if (!hdr) {
14950 nlmsg_free(msg);
14951 return -ENOBUFS;
14952 }
14953
14954 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14955 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14956 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14957 NL80211_ATTR_PAD) ||
14958 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14959 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
14960 (unencrypted && nla_put_flag(msg,
14961 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
14962 goto nla_put_failure;
14963
14964 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
14965 if (!frame)
14966 goto nla_put_failure;
14967
14968 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
14969 genlmsg_end(msg, hdr);
14970
14971 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14972
14973 nla_put_failure:
14974 nlmsg_free(msg);
14975 return -ENOBUFS;
14976 }
14977
14978 bool cfg80211_rx_control_port(struct net_device *dev,
14979 struct sk_buff *skb, bool unencrypted)
14980 {
14981 int ret;
14982
14983 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
14984 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
14985 trace_cfg80211_return_bool(ret == 0);
14986 return ret == 0;
14987 }
14988 EXPORT_SYMBOL(cfg80211_rx_control_port);
14989
14990 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14991 const char *mac, gfp_t gfp)
14992 {
14993 struct wireless_dev *wdev = dev->ieee80211_ptr;
14994 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14995 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14996 void **cb;
14997
14998 if (!msg)
14999 return NULL;
15000
15001 cb = (void **)msg->cb;
15002
15003 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15004 if (!cb[0]) {
15005 nlmsg_free(msg);
15006 return NULL;
15007 }
15008
15009 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15010 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15011 goto nla_put_failure;
15012
15013 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15014 goto nla_put_failure;
15015
15016 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15017 if (!cb[1])
15018 goto nla_put_failure;
15019
15020 cb[2] = rdev;
15021
15022 return msg;
15023 nla_put_failure:
15024 nlmsg_free(msg);
15025 return NULL;
15026 }
15027
15028 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15029 {
15030 void **cb = (void **)msg->cb;
15031 struct cfg80211_registered_device *rdev = cb[2];
15032
15033 nla_nest_end(msg, cb[1]);
15034 genlmsg_end(msg, cb[0]);
15035
15036 memset(msg->cb, 0, sizeof(msg->cb));
15037
15038 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15039 NL80211_MCGRP_MLME, gfp);
15040 }
15041
15042 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15043 enum nl80211_cqm_rssi_threshold_event rssi_event,
15044 s32 rssi_level, gfp_t gfp)
15045 {
15046 struct sk_buff *msg;
15047 struct wireless_dev *wdev = dev->ieee80211_ptr;
15048 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15049
15050 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15051
15052 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15053 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15054 return;
15055
15056 if (wdev->cqm_config) {
15057 wdev->cqm_config->last_rssi_event_value = rssi_level;
15058
15059 cfg80211_cqm_rssi_update(rdev, dev);
15060
15061 if (rssi_level == 0)
15062 rssi_level = wdev->cqm_config->last_rssi_event_value;
15063 }
15064
15065 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15066 if (!msg)
15067 return;
15068
15069 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15070 rssi_event))
15071 goto nla_put_failure;
15072
15073 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15074 rssi_level))
15075 goto nla_put_failure;
15076
15077 cfg80211_send_cqm(msg, gfp);
15078
15079 return;
15080
15081 nla_put_failure:
15082 nlmsg_free(msg);
15083 }
15084 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15085
15086 void cfg80211_cqm_txe_notify(struct net_device *dev,
15087 const u8 *peer, u32 num_packets,
15088 u32 rate, u32 intvl, gfp_t gfp)
15089 {
15090 struct sk_buff *msg;
15091
15092 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15093 if (!msg)
15094 return;
15095
15096 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15097 goto nla_put_failure;
15098
15099 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15100 goto nla_put_failure;
15101
15102 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15103 goto nla_put_failure;
15104
15105 cfg80211_send_cqm(msg, gfp);
15106 return;
15107
15108 nla_put_failure:
15109 nlmsg_free(msg);
15110 }
15111 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15112
15113 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15114 const u8 *peer, u32 num_packets, gfp_t gfp)
15115 {
15116 struct sk_buff *msg;
15117
15118 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15119
15120 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15121 if (!msg)
15122 return;
15123
15124 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15125 goto nla_put_failure;
15126
15127 cfg80211_send_cqm(msg, gfp);
15128 return;
15129
15130 nla_put_failure:
15131 nlmsg_free(msg);
15132 }
15133 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15134
15135 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15136 {
15137 struct sk_buff *msg;
15138
15139 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15140 if (!msg)
15141 return;
15142
15143 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15144 goto nla_put_failure;
15145
15146 cfg80211_send_cqm(msg, gfp);
15147 return;
15148
15149 nla_put_failure:
15150 nlmsg_free(msg);
15151 }
15152 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15153
15154 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15155 struct net_device *netdev, const u8 *bssid,
15156 const u8 *replay_ctr, gfp_t gfp)
15157 {
15158 struct sk_buff *msg;
15159 struct nlattr *rekey_attr;
15160 void *hdr;
15161
15162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15163 if (!msg)
15164 return;
15165
15166 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15167 if (!hdr) {
15168 nlmsg_free(msg);
15169 return;
15170 }
15171
15172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15173 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15174 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15175 goto nla_put_failure;
15176
15177 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15178 if (!rekey_attr)
15179 goto nla_put_failure;
15180
15181 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15182 NL80211_REPLAY_CTR_LEN, replay_ctr))
15183 goto nla_put_failure;
15184
15185 nla_nest_end(msg, rekey_attr);
15186
15187 genlmsg_end(msg, hdr);
15188
15189 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15190 NL80211_MCGRP_MLME, gfp);
15191 return;
15192
15193 nla_put_failure:
15194 nlmsg_free(msg);
15195 }
15196
15197 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15198 const u8 *replay_ctr, gfp_t gfp)
15199 {
15200 struct wireless_dev *wdev = dev->ieee80211_ptr;
15201 struct wiphy *wiphy = wdev->wiphy;
15202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15203
15204 trace_cfg80211_gtk_rekey_notify(dev, bssid);
15205 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15206 }
15207 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15208
15209 static void
15210 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15211 struct net_device *netdev, int index,
15212 const u8 *bssid, bool preauth, gfp_t gfp)
15213 {
15214 struct sk_buff *msg;
15215 struct nlattr *attr;
15216 void *hdr;
15217
15218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15219 if (!msg)
15220 return;
15221
15222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15223 if (!hdr) {
15224 nlmsg_free(msg);
15225 return;
15226 }
15227
15228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15229 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15230 goto nla_put_failure;
15231
15232 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15233 if (!attr)
15234 goto nla_put_failure;
15235
15236 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15237 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15238 (preauth &&
15239 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15240 goto nla_put_failure;
15241
15242 nla_nest_end(msg, attr);
15243
15244 genlmsg_end(msg, hdr);
15245
15246 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15247 NL80211_MCGRP_MLME, gfp);
15248 return;
15249
15250 nla_put_failure:
15251 nlmsg_free(msg);
15252 }
15253
15254 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15255 const u8 *bssid, bool preauth, gfp_t gfp)
15256 {
15257 struct wireless_dev *wdev = dev->ieee80211_ptr;
15258 struct wiphy *wiphy = wdev->wiphy;
15259 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15260
15261 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15262 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15263 }
15264 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15265
15266 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15267 struct net_device *netdev,
15268 struct cfg80211_chan_def *chandef,
15269 gfp_t gfp,
15270 enum nl80211_commands notif,
15271 u8 count)
15272 {
15273 struct sk_buff *msg;
15274 void *hdr;
15275
15276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15277 if (!msg)
15278 return;
15279
15280 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15281 if (!hdr) {
15282 nlmsg_free(msg);
15283 return;
15284 }
15285
15286 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15287 goto nla_put_failure;
15288
15289 if (nl80211_send_chandef(msg, chandef))
15290 goto nla_put_failure;
15291
15292 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15293 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15294 goto nla_put_failure;
15295
15296 genlmsg_end(msg, hdr);
15297
15298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15299 NL80211_MCGRP_MLME, gfp);
15300 return;
15301
15302 nla_put_failure:
15303 nlmsg_free(msg);
15304 }
15305
15306 void cfg80211_ch_switch_notify(struct net_device *dev,
15307 struct cfg80211_chan_def *chandef)
15308 {
15309 struct wireless_dev *wdev = dev->ieee80211_ptr;
15310 struct wiphy *wiphy = wdev->wiphy;
15311 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15312
15313 ASSERT_WDEV_LOCK(wdev);
15314
15315 trace_cfg80211_ch_switch_notify(dev, chandef);
15316
15317 wdev->chandef = *chandef;
15318 wdev->preset_chandef = *chandef;
15319 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15320 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15321 }
15322 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15323
15324 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15325 struct cfg80211_chan_def *chandef,
15326 u8 count)
15327 {
15328 struct wireless_dev *wdev = dev->ieee80211_ptr;
15329 struct wiphy *wiphy = wdev->wiphy;
15330 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15331
15332 trace_cfg80211_ch_switch_started_notify(dev, chandef);
15333
15334 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15335 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15336 }
15337 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15338
15339 void
15340 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15341 const struct cfg80211_chan_def *chandef,
15342 enum nl80211_radar_event event,
15343 struct net_device *netdev, gfp_t gfp)
15344 {
15345 struct sk_buff *msg;
15346 void *hdr;
15347
15348 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15349 if (!msg)
15350 return;
15351
15352 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15353 if (!hdr) {
15354 nlmsg_free(msg);
15355 return;
15356 }
15357
15358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15359 goto nla_put_failure;
15360
15361 /* NOP and radar events don't need a netdev parameter */
15362 if (netdev) {
15363 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15364
15365 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15366 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15367 NL80211_ATTR_PAD))
15368 goto nla_put_failure;
15369 }
15370
15371 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15372 goto nla_put_failure;
15373
15374 if (nl80211_send_chandef(msg, chandef))
15375 goto nla_put_failure;
15376
15377 genlmsg_end(msg, hdr);
15378
15379 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15380 NL80211_MCGRP_MLME, gfp);
15381 return;
15382
15383 nla_put_failure:
15384 nlmsg_free(msg);
15385 }
15386
15387 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15388 struct sta_opmode_info *sta_opmode,
15389 gfp_t gfp)
15390 {
15391 struct sk_buff *msg;
15392 struct wireless_dev *wdev = dev->ieee80211_ptr;
15393 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15394 void *hdr;
15395
15396 if (WARN_ON(!mac))
15397 return;
15398
15399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400 if (!msg)
15401 return;
15402
15403 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15404 if (!hdr) {
15405 nlmsg_free(msg);
15406 return;
15407 }
15408
15409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15410 goto nla_put_failure;
15411
15412 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15413 goto nla_put_failure;
15414
15415 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15416 goto nla_put_failure;
15417
15418 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15419 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15420 goto nla_put_failure;
15421
15422 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15423 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15424 goto nla_put_failure;
15425
15426 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15427 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15428 goto nla_put_failure;
15429
15430 genlmsg_end(msg, hdr);
15431
15432 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15433 NL80211_MCGRP_MLME, gfp);
15434
15435 return;
15436
15437 nla_put_failure:
15438 nlmsg_free(msg);
15439 }
15440 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15441
15442 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15443 u64 cookie, bool acked, s32 ack_signal,
15444 bool is_valid_ack_signal, gfp_t gfp)
15445 {
15446 struct wireless_dev *wdev = dev->ieee80211_ptr;
15447 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15448 struct sk_buff *msg;
15449 void *hdr;
15450
15451 trace_cfg80211_probe_status(dev, addr, cookie, acked);
15452
15453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15454
15455 if (!msg)
15456 return;
15457
15458 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15459 if (!hdr) {
15460 nlmsg_free(msg);
15461 return;
15462 }
15463
15464 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15465 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15466 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15467 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15468 NL80211_ATTR_PAD) ||
15469 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15470 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15471 ack_signal)))
15472 goto nla_put_failure;
15473
15474 genlmsg_end(msg, hdr);
15475
15476 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15477 NL80211_MCGRP_MLME, gfp);
15478 return;
15479
15480 nla_put_failure:
15481 nlmsg_free(msg);
15482 }
15483 EXPORT_SYMBOL(cfg80211_probe_status);
15484
15485 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15486 const u8 *frame, size_t len,
15487 int freq, int sig_dbm)
15488 {
15489 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15490 struct sk_buff *msg;
15491 void *hdr;
15492 struct cfg80211_beacon_registration *reg;
15493
15494 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15495
15496 spin_lock_bh(&rdev->beacon_registrations_lock);
15497 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15498 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15499 if (!msg) {
15500 spin_unlock_bh(&rdev->beacon_registrations_lock);
15501 return;
15502 }
15503
15504 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15505 if (!hdr)
15506 goto nla_put_failure;
15507
15508 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15509 (freq &&
15510 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15511 (sig_dbm &&
15512 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15513 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15514 goto nla_put_failure;
15515
15516 genlmsg_end(msg, hdr);
15517
15518 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15519 }
15520 spin_unlock_bh(&rdev->beacon_registrations_lock);
15521 return;
15522
15523 nla_put_failure:
15524 spin_unlock_bh(&rdev->beacon_registrations_lock);
15525 nlmsg_free(msg);
15526 }
15527 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15528
15529 #ifdef CONFIG_PM
15530 static int cfg80211_net_detect_results(struct sk_buff *msg,
15531 struct cfg80211_wowlan_wakeup *wakeup)
15532 {
15533 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15534 struct nlattr *nl_results, *nl_match, *nl_freqs;
15535 int i, j;
15536
15537 nl_results = nla_nest_start(
15538 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15539 if (!nl_results)
15540 return -EMSGSIZE;
15541
15542 for (i = 0; i < nd->n_matches; i++) {
15543 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15544
15545 nl_match = nla_nest_start(msg, i);
15546 if (!nl_match)
15547 break;
15548
15549 /* The SSID attribute is optional in nl80211, but for
15550 * simplicity reasons it's always present in the
15551 * cfg80211 structure. If a driver can't pass the
15552 * SSID, that needs to be changed. A zero length SSID
15553 * is still a valid SSID (wildcard), so it cannot be
15554 * used for this purpose.
15555 */
15556 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15557 match->ssid.ssid)) {
15558 nla_nest_cancel(msg, nl_match);
15559 goto out;
15560 }
15561
15562 if (match->n_channels) {
15563 nl_freqs = nla_nest_start(
15564 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15565 if (!nl_freqs) {
15566 nla_nest_cancel(msg, nl_match);
15567 goto out;
15568 }
15569
15570 for (j = 0; j < match->n_channels; j++) {
15571 if (nla_put_u32(msg, j, match->channels[j])) {
15572 nla_nest_cancel(msg, nl_freqs);
15573 nla_nest_cancel(msg, nl_match);
15574 goto out;
15575 }
15576 }
15577
15578 nla_nest_end(msg, nl_freqs);
15579 }
15580
15581 nla_nest_end(msg, nl_match);
15582 }
15583
15584 out:
15585 nla_nest_end(msg, nl_results);
15586 return 0;
15587 }
15588
15589 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15590 struct cfg80211_wowlan_wakeup *wakeup,
15591 gfp_t gfp)
15592 {
15593 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15594 struct sk_buff *msg;
15595 void *hdr;
15596 int size = 200;
15597
15598 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15599
15600 if (wakeup)
15601 size += wakeup->packet_present_len;
15602
15603 msg = nlmsg_new(size, gfp);
15604 if (!msg)
15605 return;
15606
15607 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15608 if (!hdr)
15609 goto free_msg;
15610
15611 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15612 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15613 NL80211_ATTR_PAD))
15614 goto free_msg;
15615
15616 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15617 wdev->netdev->ifindex))
15618 goto free_msg;
15619
15620 if (wakeup) {
15621 struct nlattr *reasons;
15622
15623 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15624 if (!reasons)
15625 goto free_msg;
15626
15627 if (wakeup->disconnect &&
15628 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15629 goto free_msg;
15630 if (wakeup->magic_pkt &&
15631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15632 goto free_msg;
15633 if (wakeup->gtk_rekey_failure &&
15634 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15635 goto free_msg;
15636 if (wakeup->eap_identity_req &&
15637 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15638 goto free_msg;
15639 if (wakeup->four_way_handshake &&
15640 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15641 goto free_msg;
15642 if (wakeup->rfkill_release &&
15643 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15644 goto free_msg;
15645
15646 if (wakeup->pattern_idx >= 0 &&
15647 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15648 wakeup->pattern_idx))
15649 goto free_msg;
15650
15651 if (wakeup->tcp_match &&
15652 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15653 goto free_msg;
15654
15655 if (wakeup->tcp_connlost &&
15656 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15657 goto free_msg;
15658
15659 if (wakeup->tcp_nomoretokens &&
15660 nla_put_flag(msg,
15661 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15662 goto free_msg;
15663
15664 if (wakeup->packet) {
15665 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15666 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15667
15668 if (!wakeup->packet_80211) {
15669 pkt_attr =
15670 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15671 len_attr =
15672 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15673 }
15674
15675 if (wakeup->packet_len &&
15676 nla_put_u32(msg, len_attr, wakeup->packet_len))
15677 goto free_msg;
15678
15679 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15680 wakeup->packet))
15681 goto free_msg;
15682 }
15683
15684 if (wakeup->net_detect &&
15685 cfg80211_net_detect_results(msg, wakeup))
15686 goto free_msg;
15687
15688 nla_nest_end(msg, reasons);
15689 }
15690
15691 genlmsg_end(msg, hdr);
15692
15693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15694 NL80211_MCGRP_MLME, gfp);
15695 return;
15696
15697 free_msg:
15698 nlmsg_free(msg);
15699 }
15700 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15701 #endif
15702
15703 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15704 enum nl80211_tdls_operation oper,
15705 u16 reason_code, gfp_t gfp)
15706 {
15707 struct wireless_dev *wdev = dev->ieee80211_ptr;
15708 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15709 struct sk_buff *msg;
15710 void *hdr;
15711
15712 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15713 reason_code);
15714
15715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15716 if (!msg)
15717 return;
15718
15719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15720 if (!hdr) {
15721 nlmsg_free(msg);
15722 return;
15723 }
15724
15725 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15726 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15727 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15728 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15729 (reason_code > 0 &&
15730 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15731 goto nla_put_failure;
15732
15733 genlmsg_end(msg, hdr);
15734
15735 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15736 NL80211_MCGRP_MLME, gfp);
15737 return;
15738
15739 nla_put_failure:
15740 nlmsg_free(msg);
15741 }
15742 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15743
15744 static int nl80211_netlink_notify(struct notifier_block * nb,
15745 unsigned long state,
15746 void *_notify)
15747 {
15748 struct netlink_notify *notify = _notify;
15749 struct cfg80211_registered_device *rdev;
15750 struct wireless_dev *wdev;
15751 struct cfg80211_beacon_registration *reg, *tmp;
15752
15753 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15754 return NOTIFY_DONE;
15755
15756 rcu_read_lock();
15757
15758 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15759 struct cfg80211_sched_scan_request *sched_scan_req;
15760
15761 list_for_each_entry_rcu(sched_scan_req,
15762 &rdev->sched_scan_req_list,
15763 list) {
15764 if (sched_scan_req->owner_nlportid == notify->portid) {
15765 sched_scan_req->nl_owner_dead = true;
15766 schedule_work(&rdev->sched_scan_stop_wk);
15767 }
15768 }
15769
15770 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15771 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15772
15773 if (wdev->owner_nlportid == notify->portid) {
15774 wdev->nl_owner_dead = true;
15775 schedule_work(&rdev->destroy_work);
15776 } else if (wdev->conn_owner_nlportid == notify->portid) {
15777 schedule_work(&wdev->disconnect_wk);
15778 }
15779 }
15780
15781 spin_lock_bh(&rdev->beacon_registrations_lock);
15782 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15783 list) {
15784 if (reg->nlportid == notify->portid) {
15785 list_del(&reg->list);
15786 kfree(reg);
15787 break;
15788 }
15789 }
15790 spin_unlock_bh(&rdev->beacon_registrations_lock);
15791 }
15792
15793 rcu_read_unlock();
15794
15795 /*
15796 * It is possible that the user space process that is controlling the
15797 * indoor setting disappeared, so notify the regulatory core.
15798 */
15799 regulatory_netlink_notify(notify->portid);
15800 return NOTIFY_OK;
15801 }
15802
15803 static struct notifier_block nl80211_netlink_notifier = {
15804 .notifier_call = nl80211_netlink_notify,
15805 };
15806
15807 void cfg80211_ft_event(struct net_device *netdev,
15808 struct cfg80211_ft_event_params *ft_event)
15809 {
15810 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15811 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15812 struct sk_buff *msg;
15813 void *hdr;
15814
15815 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15816
15817 if (!ft_event->target_ap)
15818 return;
15819
15820 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
15821 GFP_KERNEL);
15822 if (!msg)
15823 return;
15824
15825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15826 if (!hdr)
15827 goto out;
15828
15829 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15830 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15831 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15832 goto out;
15833
15834 if (ft_event->ies &&
15835 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15836 goto out;
15837 if (ft_event->ric_ies &&
15838 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15839 ft_event->ric_ies))
15840 goto out;
15841
15842 genlmsg_end(msg, hdr);
15843
15844 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15845 NL80211_MCGRP_MLME, GFP_KERNEL);
15846 return;
15847 out:
15848 nlmsg_free(msg);
15849 }
15850 EXPORT_SYMBOL(cfg80211_ft_event);
15851
15852 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15853 {
15854 struct cfg80211_registered_device *rdev;
15855 struct sk_buff *msg;
15856 void *hdr;
15857 u32 nlportid;
15858
15859 rdev = wiphy_to_rdev(wdev->wiphy);
15860 if (!rdev->crit_proto_nlportid)
15861 return;
15862
15863 nlportid = rdev->crit_proto_nlportid;
15864 rdev->crit_proto_nlportid = 0;
15865
15866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15867 if (!msg)
15868 return;
15869
15870 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15871 if (!hdr)
15872 goto nla_put_failure;
15873
15874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15875 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15876 NL80211_ATTR_PAD))
15877 goto nla_put_failure;
15878
15879 genlmsg_end(msg, hdr);
15880
15881 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15882 return;
15883
15884 nla_put_failure:
15885 nlmsg_free(msg);
15886 }
15887 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15888
15889 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15890 {
15891 struct wiphy *wiphy = wdev->wiphy;
15892 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15893 struct sk_buff *msg;
15894 void *hdr;
15895
15896 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15897 if (!msg)
15898 return;
15899
15900 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15901 if (!hdr)
15902 goto out;
15903
15904 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15905 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15906 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15907 NL80211_ATTR_PAD))
15908 goto out;
15909
15910 genlmsg_end(msg, hdr);
15911
15912 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15913 NL80211_MCGRP_MLME, GFP_KERNEL);
15914 return;
15915 out:
15916 nlmsg_free(msg);
15917 }
15918
15919 int cfg80211_external_auth_request(struct net_device *dev,
15920 struct cfg80211_external_auth_params *params,
15921 gfp_t gfp)
15922 {
15923 struct wireless_dev *wdev = dev->ieee80211_ptr;
15924 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15925 struct sk_buff *msg;
15926 void *hdr;
15927
15928 if (!wdev->conn_owner_nlportid)
15929 return -EINVAL;
15930
15931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15932 if (!msg)
15933 return -ENOMEM;
15934
15935 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
15936 if (!hdr)
15937 goto nla_put_failure;
15938
15939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15941 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
15942 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
15943 params->action) ||
15944 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
15945 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
15946 params->ssid.ssid))
15947 goto nla_put_failure;
15948
15949 genlmsg_end(msg, hdr);
15950 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
15951 wdev->conn_owner_nlportid);
15952 return 0;
15953
15954 nla_put_failure:
15955 nlmsg_free(msg);
15956 return -ENOBUFS;
15957 }
15958 EXPORT_SYMBOL(cfg80211_external_auth_request);
15959
15960 /* initialisation/exit functions */
15961
15962 int __init nl80211_init(void)
15963 {
15964 int err;
15965
15966 err = genl_register_family(&nl80211_fam);
15967 if (err)
15968 return err;
15969
15970 err = netlink_register_notifier(&nl80211_netlink_notifier);
15971 if (err)
15972 goto err_out;
15973
15974 return 0;
15975 err_out:
15976 genl_unregister_family(&nl80211_fam);
15977 return err;
15978 }
15979
15980 void nl80211_exit(void)
15981 {
15982 netlink_unregister_notifier(&nl80211_netlink_notifier);
15983 genl_unregister_family(&nl80211_fam);
15984 }
Linux with added FPC-III support