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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2017 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 /* the netlink family */
36 static struct genl_family nl80211_fam;
37
38 /* multicast groups */
39 enum nl80211_multicast_groups {
40 NL80211_MCGRP_CONFIG,
41 NL80211_MCGRP_SCAN,
42 NL80211_MCGRP_REGULATORY,
43 NL80211_MCGRP_MLME,
44 NL80211_MCGRP_VENDOR,
45 NL80211_MCGRP_NAN,
46 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
47 };
48
49 static const struct genl_multicast_group nl80211_mcgrps[] = {
50 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
51 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
52 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
53 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
54 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
55 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
56 #ifdef CONFIG_NL80211_TESTMODE
57 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
58 #endif
59 };
60
61 /* returns ERR_PTR values */
62 static struct wireless_dev *
63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
64 {
65 struct cfg80211_registered_device *rdev;
66 struct wireless_dev *result = NULL;
67 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
68 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
69 u64 wdev_id;
70 int wiphy_idx = -1;
71 int ifidx = -1;
72
73 ASSERT_RTNL();
74
75 if (!have_ifidx && !have_wdev_id)
76 return ERR_PTR(-EINVAL);
77
78 if (have_ifidx)
79 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
80 if (have_wdev_id) {
81 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
82 wiphy_idx = wdev_id >> 32;
83 }
84
85 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
86 struct wireless_dev *wdev;
87
88 if (wiphy_net(&rdev->wiphy) != netns)
89 continue;
90
91 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
92 continue;
93
94 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
95 if (have_ifidx && wdev->netdev &&
96 wdev->netdev->ifindex == ifidx) {
97 result = wdev;
98 break;
99 }
100 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
101 result = wdev;
102 break;
103 }
104 }
105
106 if (result)
107 break;
108 }
109
110 if (result)
111 return result;
112 return ERR_PTR(-ENODEV);
113 }
114
115 static struct cfg80211_registered_device *
116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
117 {
118 struct cfg80211_registered_device *rdev = NULL, *tmp;
119 struct net_device *netdev;
120
121 ASSERT_RTNL();
122
123 if (!attrs[NL80211_ATTR_WIPHY] &&
124 !attrs[NL80211_ATTR_IFINDEX] &&
125 !attrs[NL80211_ATTR_WDEV])
126 return ERR_PTR(-EINVAL);
127
128 if (attrs[NL80211_ATTR_WIPHY])
129 rdev = cfg80211_rdev_by_wiphy_idx(
130 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
131
132 if (attrs[NL80211_ATTR_WDEV]) {
133 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
134 struct wireless_dev *wdev;
135 bool found = false;
136
137 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
138 if (tmp) {
139 /* make sure wdev exists */
140 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
141 if (wdev->identifier != (u32)wdev_id)
142 continue;
143 found = true;
144 break;
145 }
146
147 if (!found)
148 tmp = NULL;
149
150 if (rdev && tmp != rdev)
151 return ERR_PTR(-EINVAL);
152 rdev = tmp;
153 }
154 }
155
156 if (attrs[NL80211_ATTR_IFINDEX]) {
157 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
158
159 netdev = __dev_get_by_index(netns, ifindex);
160 if (netdev) {
161 if (netdev->ieee80211_ptr)
162 tmp = wiphy_to_rdev(
163 netdev->ieee80211_ptr->wiphy);
164 else
165 tmp = NULL;
166
167 /* not wireless device -- return error */
168 if (!tmp)
169 return ERR_PTR(-EINVAL);
170
171 /* mismatch -- return error */
172 if (rdev && tmp != rdev)
173 return ERR_PTR(-EINVAL);
174
175 rdev = tmp;
176 }
177 }
178
179 if (!rdev)
180 return ERR_PTR(-ENODEV);
181
182 if (netns != wiphy_net(&rdev->wiphy))
183 return ERR_PTR(-ENODEV);
184
185 return rdev;
186 }
187
188 /*
189 * This function returns a pointer to the driver
190 * that the genl_info item that is passed refers to.
191 *
192 * The result of this can be a PTR_ERR and hence must
193 * be checked with IS_ERR() for errors.
194 */
195 static struct cfg80211_registered_device *
196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
197 {
198 return __cfg80211_rdev_from_attrs(netns, info->attrs);
199 }
200
201 /* policy for the attributes */
202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
203 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
204 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
205 .len = 20-1 },
206 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
207
208 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
209 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
210 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
211 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
212 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
213
214 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
215 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
216 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
217 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
219 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
220
221 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
222 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
223 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
224
225 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
226 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
227
228 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
229 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
230 .len = WLAN_MAX_KEY_LEN },
231 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
232 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
233 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
234 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
235 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
236
237 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
238 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
239 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
240 .len = IEEE80211_MAX_DATA_LEN },
241 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
242 .len = IEEE80211_MAX_DATA_LEN },
243 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
244 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
245 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
246 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
247 .len = NL80211_MAX_SUPP_RATES },
248 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
249 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
250 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
251 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_MESH_ID_LEN },
253 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
254
255 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
256 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
257
258 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
259 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
260 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
262 .len = NL80211_MAX_SUPP_RATES },
263 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
264
265 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
266 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
267
268 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
269
270 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
271 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
272 .len = IEEE80211_MAX_DATA_LEN },
273 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
275
276 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
277 .len = IEEE80211_MAX_SSID_LEN },
278 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
279 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
280 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
281 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
282 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
283 [NL80211_ATTR_STA_FLAGS2] = {
284 .len = sizeof(struct nl80211_sta_flag_update),
285 },
286 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
287 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
288 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
289 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
290 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
291 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
292 [NL80211_ATTR_PID] = { .type = NLA_U32 },
293 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
294 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
295 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
296 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
297 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
298 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
299 .len = IEEE80211_MAX_DATA_LEN },
300 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
301 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
302 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
303 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
304 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
305 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
306 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
307 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
308 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
309 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
310 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
311 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
312 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
313 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
314 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
315 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
316 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
317 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
318 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
319 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
320 .len = IEEE80211_MAX_DATA_LEN },
321 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
322 .len = IEEE80211_MAX_DATA_LEN },
323 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
324 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
325 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
326 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
327 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
328 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
329 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
330 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
331 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
332 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
333 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
334 .len = IEEE80211_MAX_DATA_LEN },
335 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
336 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
337 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
338 .len = NL80211_HT_CAPABILITY_LEN
339 },
340 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
341 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
342 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
343 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
344 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
345 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
346 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
347 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
348 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
349 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
350 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
351 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
352 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
353 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
354 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
355 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
356 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
357 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
358 .len = NL80211_VHT_CAPABILITY_LEN,
359 },
360 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
361 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
362 .len = IEEE80211_MAX_DATA_LEN },
363 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
364 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
365 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
366 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
367 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
368 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
369 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
370 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
371 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
372 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
373 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
374 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
375 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
376 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
377 .len = IEEE80211_QOS_MAP_LEN_MAX },
378 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
379 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
380 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
381 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
382 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
383 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
384 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
385 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
386 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
387 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
388 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
390 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
391 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
392 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
393 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
394 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
395 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
396 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
397 .len = VHT_MUMIMO_GROUPS_DATA_LEN
398 },
399 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
400 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
401 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
402 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
403 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
404 .len = FILS_MAX_KEK_LEN },
405 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
406 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
407 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
408 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
409 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
410 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
411 },
412 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
413 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
414 .len = FILS_ERP_MAX_USERNAME_LEN },
415 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
416 .len = FILS_ERP_MAX_REALM_LEN },
417 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
418 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
419 .len = FILS_ERP_MAX_RRK_LEN },
420 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
421 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
422 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
423 };
424
425 /* policy for the key attributes */
426 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
427 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
428 [NL80211_KEY_IDX] = { .type = NLA_U8 },
429 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
430 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
431 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
432 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
433 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
434 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
435 };
436
437 /* policy for the key default flags */
438 static const struct nla_policy
439 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
440 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
441 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
442 };
443
444 #ifdef CONFIG_PM
445 /* policy for WoWLAN attributes */
446 static const struct nla_policy
447 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
448 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
449 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
450 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
451 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
452 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
453 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
454 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
455 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
456 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
457 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
458 };
459
460 static const struct nla_policy
461 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
462 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
463 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
464 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
465 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
466 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
467 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
468 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
469 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
470 },
471 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
472 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
473 },
474 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
475 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
476 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
477 };
478 #endif /* CONFIG_PM */
479
480 /* policy for coalesce rule attributes */
481 static const struct nla_policy
482 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
483 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
484 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
485 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
486 };
487
488 /* policy for GTK rekey offload attributes */
489 static const struct nla_policy
490 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
491 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
492 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
493 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
494 };
495
496 static const struct nla_policy
497 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
498 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
499 .len = IEEE80211_MAX_SSID_LEN },
500 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
501 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
502 };
503
504 static const struct nla_policy
505 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
506 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
507 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
508 };
509
510 static const struct nla_policy
511 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
512 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
513 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
514 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
515 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
516 },
517 };
518
519 /* policy for NAN function attributes */
520 static const struct nla_policy
521 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
522 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
523 [NL80211_NAN_FUNC_SERVICE_ID] = {
524 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
525 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
526 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
527 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
528 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
529 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
530 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
531 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
532 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
533 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
534 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
535 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
536 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
537 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
538 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
539 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
540 };
541
542 /* policy for Service Response Filter attributes */
543 static const struct nla_policy
544 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
545 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
546 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
547 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
548 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
549 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
550 };
551
552 /* policy for packet pattern attributes */
553 static const struct nla_policy
554 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
555 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
556 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
557 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
558 };
559
560 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
561 struct netlink_callback *cb,
562 struct cfg80211_registered_device **rdev,
563 struct wireless_dev **wdev)
564 {
565 int err;
566
567 if (!cb->args[0]) {
568 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
569 genl_family_attrbuf(&nl80211_fam),
570 nl80211_fam.maxattr, nl80211_policy, NULL);
571 if (err)
572 return err;
573
574 *wdev = __cfg80211_wdev_from_attrs(
575 sock_net(skb->sk),
576 genl_family_attrbuf(&nl80211_fam));
577 if (IS_ERR(*wdev))
578 return PTR_ERR(*wdev);
579 *rdev = wiphy_to_rdev((*wdev)->wiphy);
580 /* 0 is the first index - add 1 to parse only once */
581 cb->args[0] = (*rdev)->wiphy_idx + 1;
582 cb->args[1] = (*wdev)->identifier;
583 } else {
584 /* subtract the 1 again here */
585 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
586 struct wireless_dev *tmp;
587
588 if (!wiphy)
589 return -ENODEV;
590 *rdev = wiphy_to_rdev(wiphy);
591 *wdev = NULL;
592
593 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
594 if (tmp->identifier == cb->args[1]) {
595 *wdev = tmp;
596 break;
597 }
598 }
599
600 if (!*wdev)
601 return -ENODEV;
602 }
603
604 return 0;
605 }
606
607 /* IE validation */
608 static bool is_valid_ie_attr(const struct nlattr *attr)
609 {
610 const u8 *pos;
611 int len;
612
613 if (!attr)
614 return true;
615
616 pos = nla_data(attr);
617 len = nla_len(attr);
618
619 while (len) {
620 u8 elemlen;
621
622 if (len < 2)
623 return false;
624 len -= 2;
625
626 elemlen = pos[1];
627 if (elemlen > len)
628 return false;
629
630 len -= elemlen;
631 pos += 2 + elemlen;
632 }
633
634 return true;
635 }
636
637 /* message building helper */
638 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
639 int flags, u8 cmd)
640 {
641 /* since there is no private header just add the generic one */
642 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
643 }
644
645 static int nl80211_msg_put_channel(struct sk_buff *msg,
646 struct ieee80211_channel *chan,
647 bool large)
648 {
649 /* Some channels must be completely excluded from the
650 * list to protect old user-space tools from breaking
651 */
652 if (!large && chan->flags &
653 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
654 return 0;
655
656 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
657 chan->center_freq))
658 goto nla_put_failure;
659
660 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
661 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
662 goto nla_put_failure;
663 if (chan->flags & IEEE80211_CHAN_NO_IR) {
664 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
665 goto nla_put_failure;
666 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
667 goto nla_put_failure;
668 }
669 if (chan->flags & IEEE80211_CHAN_RADAR) {
670 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
671 goto nla_put_failure;
672 if (large) {
673 u32 time;
674
675 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
676
677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
678 chan->dfs_state))
679 goto nla_put_failure;
680 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
681 time))
682 goto nla_put_failure;
683 if (nla_put_u32(msg,
684 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
685 chan->dfs_cac_ms))
686 goto nla_put_failure;
687 }
688 }
689
690 if (large) {
691 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
692 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
693 goto nla_put_failure;
694 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
695 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
696 goto nla_put_failure;
697 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
698 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
699 goto nla_put_failure;
700 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
701 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
702 goto nla_put_failure;
703 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
704 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
705 goto nla_put_failure;
706 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
707 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
708 goto nla_put_failure;
709 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
710 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
711 goto nla_put_failure;
712 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
713 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
714 goto nla_put_failure;
715 }
716
717 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
718 DBM_TO_MBM(chan->max_power)))
719 goto nla_put_failure;
720
721 return 0;
722
723 nla_put_failure:
724 return -ENOBUFS;
725 }
726
727 /* netlink command implementations */
728
729 struct key_parse {
730 struct key_params p;
731 int idx;
732 int type;
733 bool def, defmgmt;
734 bool def_uni, def_multi;
735 };
736
737 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
738 {
739 struct nlattr *tb[NL80211_KEY_MAX + 1];
740 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
741 nl80211_key_policy, NULL);
742 if (err)
743 return err;
744
745 k->def = !!tb[NL80211_KEY_DEFAULT];
746 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
747
748 if (k->def) {
749 k->def_uni = true;
750 k->def_multi = true;
751 }
752 if (k->defmgmt)
753 k->def_multi = true;
754
755 if (tb[NL80211_KEY_IDX])
756 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
757
758 if (tb[NL80211_KEY_DATA]) {
759 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
760 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
761 }
762
763 if (tb[NL80211_KEY_SEQ]) {
764 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
765 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
766 }
767
768 if (tb[NL80211_KEY_CIPHER])
769 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
770
771 if (tb[NL80211_KEY_TYPE]) {
772 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
773 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
774 return -EINVAL;
775 }
776
777 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
778 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
779
780 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
781 tb[NL80211_KEY_DEFAULT_TYPES],
782 nl80211_key_default_policy, NULL);
783 if (err)
784 return err;
785
786 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
787 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
788 }
789
790 return 0;
791 }
792
793 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
794 {
795 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
796 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
797 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
798 }
799
800 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
801 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
802 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
803 }
804
805 if (info->attrs[NL80211_ATTR_KEY_IDX])
806 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
807
808 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
809 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
810
811 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
812 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
813
814 if (k->def) {
815 k->def_uni = true;
816 k->def_multi = true;
817 }
818 if (k->defmgmt)
819 k->def_multi = true;
820
821 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
822 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
823 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
824 return -EINVAL;
825 }
826
827 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
828 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
829 int err = nla_parse_nested(kdt,
830 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
831 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
832 nl80211_key_default_policy,
833 info->extack);
834 if (err)
835 return err;
836
837 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
838 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
839 }
840
841 return 0;
842 }
843
844 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
845 {
846 int err;
847
848 memset(k, 0, sizeof(*k));
849 k->idx = -1;
850 k->type = -1;
851
852 if (info->attrs[NL80211_ATTR_KEY])
853 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
854 else
855 err = nl80211_parse_key_old(info, k);
856
857 if (err)
858 return err;
859
860 if (k->def && k->defmgmt)
861 return -EINVAL;
862
863 if (k->defmgmt) {
864 if (k->def_uni || !k->def_multi)
865 return -EINVAL;
866 }
867
868 if (k->idx != -1) {
869 if (k->defmgmt) {
870 if (k->idx < 4 || k->idx > 5)
871 return -EINVAL;
872 } else if (k->def) {
873 if (k->idx < 0 || k->idx > 3)
874 return -EINVAL;
875 } else {
876 if (k->idx < 0 || k->idx > 5)
877 return -EINVAL;
878 }
879 }
880
881 return 0;
882 }
883
884 static struct cfg80211_cached_keys *
885 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
886 struct nlattr *keys, bool *no_ht)
887 {
888 struct key_parse parse;
889 struct nlattr *key;
890 struct cfg80211_cached_keys *result;
891 int rem, err, def = 0;
892 bool have_key = false;
893
894 nla_for_each_nested(key, keys, rem) {
895 have_key = true;
896 break;
897 }
898
899 if (!have_key)
900 return NULL;
901
902 result = kzalloc(sizeof(*result), GFP_KERNEL);
903 if (!result)
904 return ERR_PTR(-ENOMEM);
905
906 result->def = -1;
907
908 nla_for_each_nested(key, keys, rem) {
909 memset(&parse, 0, sizeof(parse));
910 parse.idx = -1;
911
912 err = nl80211_parse_key_new(key, &parse);
913 if (err)
914 goto error;
915 err = -EINVAL;
916 if (!parse.p.key)
917 goto error;
918 if (parse.idx < 0 || parse.idx > 3)
919 goto error;
920 if (parse.def) {
921 if (def)
922 goto error;
923 def = 1;
924 result->def = parse.idx;
925 if (!parse.def_uni || !parse.def_multi)
926 goto error;
927 } else if (parse.defmgmt)
928 goto error;
929 err = cfg80211_validate_key_settings(rdev, &parse.p,
930 parse.idx, false, NULL);
931 if (err)
932 goto error;
933 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
934 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
935 err = -EINVAL;
936 goto error;
937 }
938 result->params[parse.idx].cipher = parse.p.cipher;
939 result->params[parse.idx].key_len = parse.p.key_len;
940 result->params[parse.idx].key = result->data[parse.idx];
941 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
942
943 /* must be WEP key if we got here */
944 if (no_ht)
945 *no_ht = true;
946 }
947
948 if (result->def < 0) {
949 err = -EINVAL;
950 goto error;
951 }
952
953 return result;
954 error:
955 kfree(result);
956 return ERR_PTR(err);
957 }
958
959 static int nl80211_key_allowed(struct wireless_dev *wdev)
960 {
961 ASSERT_WDEV_LOCK(wdev);
962
963 switch (wdev->iftype) {
964 case NL80211_IFTYPE_AP:
965 case NL80211_IFTYPE_AP_VLAN:
966 case NL80211_IFTYPE_P2P_GO:
967 case NL80211_IFTYPE_MESH_POINT:
968 break;
969 case NL80211_IFTYPE_ADHOC:
970 case NL80211_IFTYPE_STATION:
971 case NL80211_IFTYPE_P2P_CLIENT:
972 if (!wdev->current_bss)
973 return -ENOLINK;
974 break;
975 case NL80211_IFTYPE_UNSPECIFIED:
976 case NL80211_IFTYPE_OCB:
977 case NL80211_IFTYPE_MONITOR:
978 case NL80211_IFTYPE_NAN:
979 case NL80211_IFTYPE_P2P_DEVICE:
980 case NL80211_IFTYPE_WDS:
981 case NUM_NL80211_IFTYPES:
982 return -EINVAL;
983 }
984
985 return 0;
986 }
987
988 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
989 struct nlattr *tb)
990 {
991 struct ieee80211_channel *chan;
992
993 if (tb == NULL)
994 return NULL;
995 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
996 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
997 return NULL;
998 return chan;
999 }
1000
1001 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1002 {
1003 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1004 int i;
1005
1006 if (!nl_modes)
1007 goto nla_put_failure;
1008
1009 i = 0;
1010 while (ifmodes) {
1011 if ((ifmodes & 1) && nla_put_flag(msg, i))
1012 goto nla_put_failure;
1013 ifmodes >>= 1;
1014 i++;
1015 }
1016
1017 nla_nest_end(msg, nl_modes);
1018 return 0;
1019
1020 nla_put_failure:
1021 return -ENOBUFS;
1022 }
1023
1024 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1025 struct sk_buff *msg,
1026 bool large)
1027 {
1028 struct nlattr *nl_combis;
1029 int i, j;
1030
1031 nl_combis = nla_nest_start(msg,
1032 NL80211_ATTR_INTERFACE_COMBINATIONS);
1033 if (!nl_combis)
1034 goto nla_put_failure;
1035
1036 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1037 const struct ieee80211_iface_combination *c;
1038 struct nlattr *nl_combi, *nl_limits;
1039
1040 c = &wiphy->iface_combinations[i];
1041
1042 nl_combi = nla_nest_start(msg, i + 1);
1043 if (!nl_combi)
1044 goto nla_put_failure;
1045
1046 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1047 if (!nl_limits)
1048 goto nla_put_failure;
1049
1050 for (j = 0; j < c->n_limits; j++) {
1051 struct nlattr *nl_limit;
1052
1053 nl_limit = nla_nest_start(msg, j + 1);
1054 if (!nl_limit)
1055 goto nla_put_failure;
1056 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1057 c->limits[j].max))
1058 goto nla_put_failure;
1059 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1060 c->limits[j].types))
1061 goto nla_put_failure;
1062 nla_nest_end(msg, nl_limit);
1063 }
1064
1065 nla_nest_end(msg, nl_limits);
1066
1067 if (c->beacon_int_infra_match &&
1068 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1069 goto nla_put_failure;
1070 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1071 c->num_different_channels) ||
1072 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1073 c->max_interfaces))
1074 goto nla_put_failure;
1075 if (large &&
1076 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1077 c->radar_detect_widths) ||
1078 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1079 c->radar_detect_regions)))
1080 goto nla_put_failure;
1081 if (c->beacon_int_min_gcd &&
1082 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1083 c->beacon_int_min_gcd))
1084 goto nla_put_failure;
1085
1086 nla_nest_end(msg, nl_combi);
1087 }
1088
1089 nla_nest_end(msg, nl_combis);
1090
1091 return 0;
1092 nla_put_failure:
1093 return -ENOBUFS;
1094 }
1095
1096 #ifdef CONFIG_PM
1097 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1098 struct sk_buff *msg)
1099 {
1100 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1101 struct nlattr *nl_tcp;
1102
1103 if (!tcp)
1104 return 0;
1105
1106 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1107 if (!nl_tcp)
1108 return -ENOBUFS;
1109
1110 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1111 tcp->data_payload_max))
1112 return -ENOBUFS;
1113
1114 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1115 tcp->data_payload_max))
1116 return -ENOBUFS;
1117
1118 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1119 return -ENOBUFS;
1120
1121 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1122 sizeof(*tcp->tok), tcp->tok))
1123 return -ENOBUFS;
1124
1125 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1126 tcp->data_interval_max))
1127 return -ENOBUFS;
1128
1129 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1130 tcp->wake_payload_max))
1131 return -ENOBUFS;
1132
1133 nla_nest_end(msg, nl_tcp);
1134 return 0;
1135 }
1136
1137 static int nl80211_send_wowlan(struct sk_buff *msg,
1138 struct cfg80211_registered_device *rdev,
1139 bool large)
1140 {
1141 struct nlattr *nl_wowlan;
1142
1143 if (!rdev->wiphy.wowlan)
1144 return 0;
1145
1146 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1147 if (!nl_wowlan)
1148 return -ENOBUFS;
1149
1150 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1152 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1154 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1156 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1157 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1158 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1159 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1160 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1161 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1162 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1163 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1164 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1165 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1166 return -ENOBUFS;
1167
1168 if (rdev->wiphy.wowlan->n_patterns) {
1169 struct nl80211_pattern_support pat = {
1170 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1171 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1172 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1173 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1174 };
1175
1176 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1177 sizeof(pat), &pat))
1178 return -ENOBUFS;
1179 }
1180
1181 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1182 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1183 rdev->wiphy.wowlan->max_nd_match_sets))
1184 return -ENOBUFS;
1185
1186 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1187 return -ENOBUFS;
1188
1189 nla_nest_end(msg, nl_wowlan);
1190
1191 return 0;
1192 }
1193 #endif
1194
1195 static int nl80211_send_coalesce(struct sk_buff *msg,
1196 struct cfg80211_registered_device *rdev)
1197 {
1198 struct nl80211_coalesce_rule_support rule;
1199
1200 if (!rdev->wiphy.coalesce)
1201 return 0;
1202
1203 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1204 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1205 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1206 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1207 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1208 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1209
1210 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1211 return -ENOBUFS;
1212
1213 return 0;
1214 }
1215
1216 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1217 struct ieee80211_supported_band *sband)
1218 {
1219 struct nlattr *nl_rates, *nl_rate;
1220 struct ieee80211_rate *rate;
1221 int i;
1222
1223 /* add HT info */
1224 if (sband->ht_cap.ht_supported &&
1225 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1226 sizeof(sband->ht_cap.mcs),
1227 &sband->ht_cap.mcs) ||
1228 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1229 sband->ht_cap.cap) ||
1230 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1231 sband->ht_cap.ampdu_factor) ||
1232 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1233 sband->ht_cap.ampdu_density)))
1234 return -ENOBUFS;
1235
1236 /* add VHT info */
1237 if (sband->vht_cap.vht_supported &&
1238 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1239 sizeof(sband->vht_cap.vht_mcs),
1240 &sband->vht_cap.vht_mcs) ||
1241 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1242 sband->vht_cap.cap)))
1243 return -ENOBUFS;
1244
1245 /* add bitrates */
1246 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1247 if (!nl_rates)
1248 return -ENOBUFS;
1249
1250 for (i = 0; i < sband->n_bitrates; i++) {
1251 nl_rate = nla_nest_start(msg, i);
1252 if (!nl_rate)
1253 return -ENOBUFS;
1254
1255 rate = &sband->bitrates[i];
1256 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1257 rate->bitrate))
1258 return -ENOBUFS;
1259 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1260 nla_put_flag(msg,
1261 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1262 return -ENOBUFS;
1263
1264 nla_nest_end(msg, nl_rate);
1265 }
1266
1267 nla_nest_end(msg, nl_rates);
1268
1269 return 0;
1270 }
1271
1272 static int
1273 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1274 const struct ieee80211_txrx_stypes *mgmt_stypes)
1275 {
1276 u16 stypes;
1277 struct nlattr *nl_ftypes, *nl_ifs;
1278 enum nl80211_iftype ift;
1279 int i;
1280
1281 if (!mgmt_stypes)
1282 return 0;
1283
1284 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1285 if (!nl_ifs)
1286 return -ENOBUFS;
1287
1288 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1289 nl_ftypes = nla_nest_start(msg, ift);
1290 if (!nl_ftypes)
1291 return -ENOBUFS;
1292 i = 0;
1293 stypes = mgmt_stypes[ift].tx;
1294 while (stypes) {
1295 if ((stypes & 1) &&
1296 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1297 (i << 4) | IEEE80211_FTYPE_MGMT))
1298 return -ENOBUFS;
1299 stypes >>= 1;
1300 i++;
1301 }
1302 nla_nest_end(msg, nl_ftypes);
1303 }
1304
1305 nla_nest_end(msg, nl_ifs);
1306
1307 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1308 if (!nl_ifs)
1309 return -ENOBUFS;
1310
1311 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1312 nl_ftypes = nla_nest_start(msg, ift);
1313 if (!nl_ftypes)
1314 return -ENOBUFS;
1315 i = 0;
1316 stypes = mgmt_stypes[ift].rx;
1317 while (stypes) {
1318 if ((stypes & 1) &&
1319 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1320 (i << 4) | IEEE80211_FTYPE_MGMT))
1321 return -ENOBUFS;
1322 stypes >>= 1;
1323 i++;
1324 }
1325 nla_nest_end(msg, nl_ftypes);
1326 }
1327 nla_nest_end(msg, nl_ifs);
1328
1329 return 0;
1330 }
1331
1332 #define CMD(op, n) \
1333 do { \
1334 if (rdev->ops->op) { \
1335 i++; \
1336 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1337 goto nla_put_failure; \
1338 } \
1339 } while (0)
1340
1341 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1342 struct sk_buff *msg)
1343 {
1344 int i = 0;
1345
1346 /*
1347 * do *NOT* add anything into this function, new things need to be
1348 * advertised only to new versions of userspace that can deal with
1349 * the split (and they can't possibly care about new features...
1350 */
1351 CMD(add_virtual_intf, NEW_INTERFACE);
1352 CMD(change_virtual_intf, SET_INTERFACE);
1353 CMD(add_key, NEW_KEY);
1354 CMD(start_ap, START_AP);
1355 CMD(add_station, NEW_STATION);
1356 CMD(add_mpath, NEW_MPATH);
1357 CMD(update_mesh_config, SET_MESH_CONFIG);
1358 CMD(change_bss, SET_BSS);
1359 CMD(auth, AUTHENTICATE);
1360 CMD(assoc, ASSOCIATE);
1361 CMD(deauth, DEAUTHENTICATE);
1362 CMD(disassoc, DISASSOCIATE);
1363 CMD(join_ibss, JOIN_IBSS);
1364 CMD(join_mesh, JOIN_MESH);
1365 CMD(set_pmksa, SET_PMKSA);
1366 CMD(del_pmksa, DEL_PMKSA);
1367 CMD(flush_pmksa, FLUSH_PMKSA);
1368 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1369 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1370 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1371 CMD(mgmt_tx, FRAME);
1372 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1373 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1374 i++;
1375 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1376 goto nla_put_failure;
1377 }
1378 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1379 rdev->ops->join_mesh) {
1380 i++;
1381 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1382 goto nla_put_failure;
1383 }
1384 CMD(set_wds_peer, SET_WDS_PEER);
1385 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1386 CMD(tdls_mgmt, TDLS_MGMT);
1387 CMD(tdls_oper, TDLS_OPER);
1388 }
1389 if (rdev->wiphy.max_sched_scan_reqs)
1390 CMD(sched_scan_start, START_SCHED_SCAN);
1391 CMD(probe_client, PROBE_CLIENT);
1392 CMD(set_noack_map, SET_NOACK_MAP);
1393 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1394 i++;
1395 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1396 goto nla_put_failure;
1397 }
1398 CMD(start_p2p_device, START_P2P_DEVICE);
1399 CMD(set_mcast_rate, SET_MCAST_RATE);
1400 #ifdef CONFIG_NL80211_TESTMODE
1401 CMD(testmode_cmd, TESTMODE);
1402 #endif
1403
1404 if (rdev->ops->connect || rdev->ops->auth) {
1405 i++;
1406 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1407 goto nla_put_failure;
1408 }
1409
1410 if (rdev->ops->disconnect || rdev->ops->deauth) {
1411 i++;
1412 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1413 goto nla_put_failure;
1414 }
1415
1416 return i;
1417 nla_put_failure:
1418 return -ENOBUFS;
1419 }
1420
1421 struct nl80211_dump_wiphy_state {
1422 s64 filter_wiphy;
1423 long start;
1424 long split_start, band_start, chan_start, capa_start;
1425 bool split;
1426 };
1427
1428 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1429 enum nl80211_commands cmd,
1430 struct sk_buff *msg, u32 portid, u32 seq,
1431 int flags, struct nl80211_dump_wiphy_state *state)
1432 {
1433 void *hdr;
1434 struct nlattr *nl_bands, *nl_band;
1435 struct nlattr *nl_freqs, *nl_freq;
1436 struct nlattr *nl_cmds;
1437 enum nl80211_band band;
1438 struct ieee80211_channel *chan;
1439 int i;
1440 const struct ieee80211_txrx_stypes *mgmt_stypes =
1441 rdev->wiphy.mgmt_stypes;
1442 u32 features;
1443
1444 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1445 if (!hdr)
1446 return -ENOBUFS;
1447
1448 if (WARN_ON(!state))
1449 return -EINVAL;
1450
1451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1452 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1453 wiphy_name(&rdev->wiphy)) ||
1454 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1455 cfg80211_rdev_list_generation))
1456 goto nla_put_failure;
1457
1458 if (cmd != NL80211_CMD_NEW_WIPHY)
1459 goto finish;
1460
1461 switch (state->split_start) {
1462 case 0:
1463 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1464 rdev->wiphy.retry_short) ||
1465 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1466 rdev->wiphy.retry_long) ||
1467 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1468 rdev->wiphy.frag_threshold) ||
1469 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1470 rdev->wiphy.rts_threshold) ||
1471 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1472 rdev->wiphy.coverage_class) ||
1473 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1474 rdev->wiphy.max_scan_ssids) ||
1475 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1476 rdev->wiphy.max_sched_scan_ssids) ||
1477 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1478 rdev->wiphy.max_scan_ie_len) ||
1479 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1480 rdev->wiphy.max_sched_scan_ie_len) ||
1481 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1482 rdev->wiphy.max_match_sets) ||
1483 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1484 rdev->wiphy.max_sched_scan_plans) ||
1485 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1486 rdev->wiphy.max_sched_scan_plan_interval) ||
1487 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1488 rdev->wiphy.max_sched_scan_plan_iterations))
1489 goto nla_put_failure;
1490
1491 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1492 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1493 goto nla_put_failure;
1494 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1495 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1496 goto nla_put_failure;
1497 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1498 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1499 goto nla_put_failure;
1500 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1501 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1502 goto nla_put_failure;
1503 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1504 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1505 goto nla_put_failure;
1506 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1507 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1508 goto nla_put_failure;
1509 state->split_start++;
1510 if (state->split)
1511 break;
1512 case 1:
1513 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1514 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1515 rdev->wiphy.cipher_suites))
1516 goto nla_put_failure;
1517
1518 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1519 rdev->wiphy.max_num_pmkids))
1520 goto nla_put_failure;
1521
1522 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1523 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1524 goto nla_put_failure;
1525
1526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1527 rdev->wiphy.available_antennas_tx) ||
1528 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1529 rdev->wiphy.available_antennas_rx))
1530 goto nla_put_failure;
1531
1532 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1533 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1534 rdev->wiphy.probe_resp_offload))
1535 goto nla_put_failure;
1536
1537 if ((rdev->wiphy.available_antennas_tx ||
1538 rdev->wiphy.available_antennas_rx) &&
1539 rdev->ops->get_antenna) {
1540 u32 tx_ant = 0, rx_ant = 0;
1541 int res;
1542
1543 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1544 if (!res) {
1545 if (nla_put_u32(msg,
1546 NL80211_ATTR_WIPHY_ANTENNA_TX,
1547 tx_ant) ||
1548 nla_put_u32(msg,
1549 NL80211_ATTR_WIPHY_ANTENNA_RX,
1550 rx_ant))
1551 goto nla_put_failure;
1552 }
1553 }
1554
1555 state->split_start++;
1556 if (state->split)
1557 break;
1558 case 2:
1559 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1560 rdev->wiphy.interface_modes))
1561 goto nla_put_failure;
1562 state->split_start++;
1563 if (state->split)
1564 break;
1565 case 3:
1566 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1567 if (!nl_bands)
1568 goto nla_put_failure;
1569
1570 for (band = state->band_start;
1571 band < NUM_NL80211_BANDS; band++) {
1572 struct ieee80211_supported_band *sband;
1573
1574 sband = rdev->wiphy.bands[band];
1575
1576 if (!sband)
1577 continue;
1578
1579 nl_band = nla_nest_start(msg, band);
1580 if (!nl_band)
1581 goto nla_put_failure;
1582
1583 switch (state->chan_start) {
1584 case 0:
1585 if (nl80211_send_band_rateinfo(msg, sband))
1586 goto nla_put_failure;
1587 state->chan_start++;
1588 if (state->split)
1589 break;
1590 default:
1591 /* add frequencies */
1592 nl_freqs = nla_nest_start(
1593 msg, NL80211_BAND_ATTR_FREQS);
1594 if (!nl_freqs)
1595 goto nla_put_failure;
1596
1597 for (i = state->chan_start - 1;
1598 i < sband->n_channels;
1599 i++) {
1600 nl_freq = nla_nest_start(msg, i);
1601 if (!nl_freq)
1602 goto nla_put_failure;
1603
1604 chan = &sband->channels[i];
1605
1606 if (nl80211_msg_put_channel(
1607 msg, chan,
1608 state->split))
1609 goto nla_put_failure;
1610
1611 nla_nest_end(msg, nl_freq);
1612 if (state->split)
1613 break;
1614 }
1615 if (i < sband->n_channels)
1616 state->chan_start = i + 2;
1617 else
1618 state->chan_start = 0;
1619 nla_nest_end(msg, nl_freqs);
1620 }
1621
1622 nla_nest_end(msg, nl_band);
1623
1624 if (state->split) {
1625 /* start again here */
1626 if (state->chan_start)
1627 band--;
1628 break;
1629 }
1630 }
1631 nla_nest_end(msg, nl_bands);
1632
1633 if (band < NUM_NL80211_BANDS)
1634 state->band_start = band + 1;
1635 else
1636 state->band_start = 0;
1637
1638 /* if bands & channels are done, continue outside */
1639 if (state->band_start == 0 && state->chan_start == 0)
1640 state->split_start++;
1641 if (state->split)
1642 break;
1643 case 4:
1644 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1645 if (!nl_cmds)
1646 goto nla_put_failure;
1647
1648 i = nl80211_add_commands_unsplit(rdev, msg);
1649 if (i < 0)
1650 goto nla_put_failure;
1651 if (state->split) {
1652 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1653 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1654 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1655 CMD(channel_switch, CHANNEL_SWITCH);
1656 CMD(set_qos_map, SET_QOS_MAP);
1657 if (rdev->wiphy.features &
1658 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1659 CMD(add_tx_ts, ADD_TX_TS);
1660 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1661 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1662 }
1663 #undef CMD
1664
1665 nla_nest_end(msg, nl_cmds);
1666 state->split_start++;
1667 if (state->split)
1668 break;
1669 case 5:
1670 if (rdev->ops->remain_on_channel &&
1671 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1672 nla_put_u32(msg,
1673 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1674 rdev->wiphy.max_remain_on_channel_duration))
1675 goto nla_put_failure;
1676
1677 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1678 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1679 goto nla_put_failure;
1680
1681 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1682 goto nla_put_failure;
1683 state->split_start++;
1684 if (state->split)
1685 break;
1686 case 6:
1687 #ifdef CONFIG_PM
1688 if (nl80211_send_wowlan(msg, rdev, state->split))
1689 goto nla_put_failure;
1690 state->split_start++;
1691 if (state->split)
1692 break;
1693 #else
1694 state->split_start++;
1695 #endif
1696 case 7:
1697 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1698 rdev->wiphy.software_iftypes))
1699 goto nla_put_failure;
1700
1701 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1702 state->split))
1703 goto nla_put_failure;
1704
1705 state->split_start++;
1706 if (state->split)
1707 break;
1708 case 8:
1709 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1710 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1711 rdev->wiphy.ap_sme_capa))
1712 goto nla_put_failure;
1713
1714 features = rdev->wiphy.features;
1715 /*
1716 * We can only add the per-channel limit information if the
1717 * dump is split, otherwise it makes it too big. Therefore
1718 * only advertise it in that case.
1719 */
1720 if (state->split)
1721 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1722 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1723 goto nla_put_failure;
1724
1725 if (rdev->wiphy.ht_capa_mod_mask &&
1726 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1727 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1728 rdev->wiphy.ht_capa_mod_mask))
1729 goto nla_put_failure;
1730
1731 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1732 rdev->wiphy.max_acl_mac_addrs &&
1733 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1734 rdev->wiphy.max_acl_mac_addrs))
1735 goto nla_put_failure;
1736
1737 /*
1738 * Any information below this point is only available to
1739 * applications that can deal with it being split. This
1740 * helps ensure that newly added capabilities don't break
1741 * older tools by overrunning their buffers.
1742 *
1743 * We still increment split_start so that in the split
1744 * case we'll continue with more data in the next round,
1745 * but break unconditionally so unsplit data stops here.
1746 */
1747 state->split_start++;
1748 break;
1749 case 9:
1750 if (rdev->wiphy.extended_capabilities &&
1751 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1752 rdev->wiphy.extended_capabilities_len,
1753 rdev->wiphy.extended_capabilities) ||
1754 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1755 rdev->wiphy.extended_capabilities_len,
1756 rdev->wiphy.extended_capabilities_mask)))
1757 goto nla_put_failure;
1758
1759 if (rdev->wiphy.vht_capa_mod_mask &&
1760 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1761 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1762 rdev->wiphy.vht_capa_mod_mask))
1763 goto nla_put_failure;
1764
1765 state->split_start++;
1766 break;
1767 case 10:
1768 if (nl80211_send_coalesce(msg, rdev))
1769 goto nla_put_failure;
1770
1771 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1772 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1773 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1774 goto nla_put_failure;
1775
1776 if (rdev->wiphy.max_ap_assoc_sta &&
1777 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1778 rdev->wiphy.max_ap_assoc_sta))
1779 goto nla_put_failure;
1780
1781 state->split_start++;
1782 break;
1783 case 11:
1784 if (rdev->wiphy.n_vendor_commands) {
1785 const struct nl80211_vendor_cmd_info *info;
1786 struct nlattr *nested;
1787
1788 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1789 if (!nested)
1790 goto nla_put_failure;
1791
1792 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1793 info = &rdev->wiphy.vendor_commands[i].info;
1794 if (nla_put(msg, i + 1, sizeof(*info), info))
1795 goto nla_put_failure;
1796 }
1797 nla_nest_end(msg, nested);
1798 }
1799
1800 if (rdev->wiphy.n_vendor_events) {
1801 const struct nl80211_vendor_cmd_info *info;
1802 struct nlattr *nested;
1803
1804 nested = nla_nest_start(msg,
1805 NL80211_ATTR_VENDOR_EVENTS);
1806 if (!nested)
1807 goto nla_put_failure;
1808
1809 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1810 info = &rdev->wiphy.vendor_events[i];
1811 if (nla_put(msg, i + 1, sizeof(*info), info))
1812 goto nla_put_failure;
1813 }
1814 nla_nest_end(msg, nested);
1815 }
1816 state->split_start++;
1817 break;
1818 case 12:
1819 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1820 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1821 rdev->wiphy.max_num_csa_counters))
1822 goto nla_put_failure;
1823
1824 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1825 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1826 goto nla_put_failure;
1827
1828 if (rdev->wiphy.max_sched_scan_reqs &&
1829 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1830 rdev->wiphy.max_sched_scan_reqs))
1831 goto nla_put_failure;
1832
1833 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1834 sizeof(rdev->wiphy.ext_features),
1835 rdev->wiphy.ext_features))
1836 goto nla_put_failure;
1837
1838 if (rdev->wiphy.bss_select_support) {
1839 struct nlattr *nested;
1840 u32 bss_select_support = rdev->wiphy.bss_select_support;
1841
1842 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1843 if (!nested)
1844 goto nla_put_failure;
1845
1846 i = 0;
1847 while (bss_select_support) {
1848 if ((bss_select_support & 1) &&
1849 nla_put_flag(msg, i))
1850 goto nla_put_failure;
1851 i++;
1852 bss_select_support >>= 1;
1853 }
1854 nla_nest_end(msg, nested);
1855 }
1856
1857 state->split_start++;
1858 break;
1859 case 13:
1860 if (rdev->wiphy.num_iftype_ext_capab &&
1861 rdev->wiphy.iftype_ext_capab) {
1862 struct nlattr *nested_ext_capab, *nested;
1863
1864 nested = nla_nest_start(msg,
1865 NL80211_ATTR_IFTYPE_EXT_CAPA);
1866 if (!nested)
1867 goto nla_put_failure;
1868
1869 for (i = state->capa_start;
1870 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1871 const struct wiphy_iftype_ext_capab *capab;
1872
1873 capab = &rdev->wiphy.iftype_ext_capab[i];
1874
1875 nested_ext_capab = nla_nest_start(msg, i);
1876 if (!nested_ext_capab ||
1877 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1878 capab->iftype) ||
1879 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1880 capab->extended_capabilities_len,
1881 capab->extended_capabilities) ||
1882 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1883 capab->extended_capabilities_len,
1884 capab->extended_capabilities_mask))
1885 goto nla_put_failure;
1886
1887 nla_nest_end(msg, nested_ext_capab);
1888 if (state->split)
1889 break;
1890 }
1891 nla_nest_end(msg, nested);
1892 if (i < rdev->wiphy.num_iftype_ext_capab) {
1893 state->capa_start = i + 1;
1894 break;
1895 }
1896 }
1897
1898 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1899 rdev->wiphy.nan_supported_bands))
1900 goto nla_put_failure;
1901
1902 /* done */
1903 state->split_start = 0;
1904 break;
1905 }
1906 finish:
1907 genlmsg_end(msg, hdr);
1908 return 0;
1909
1910 nla_put_failure:
1911 genlmsg_cancel(msg, hdr);
1912 return -EMSGSIZE;
1913 }
1914
1915 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1916 struct netlink_callback *cb,
1917 struct nl80211_dump_wiphy_state *state)
1918 {
1919 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1920 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1921 nl80211_fam.maxattr, nl80211_policy, NULL);
1922 /* ignore parse errors for backward compatibility */
1923 if (ret)
1924 return 0;
1925
1926 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1927 if (tb[NL80211_ATTR_WIPHY])
1928 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1929 if (tb[NL80211_ATTR_WDEV])
1930 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1931 if (tb[NL80211_ATTR_IFINDEX]) {
1932 struct net_device *netdev;
1933 struct cfg80211_registered_device *rdev;
1934 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1935
1936 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1937 if (!netdev)
1938 return -ENODEV;
1939 if (netdev->ieee80211_ptr) {
1940 rdev = wiphy_to_rdev(
1941 netdev->ieee80211_ptr->wiphy);
1942 state->filter_wiphy = rdev->wiphy_idx;
1943 }
1944 }
1945
1946 return 0;
1947 }
1948
1949 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1950 {
1951 int idx = 0, ret;
1952 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1953 struct cfg80211_registered_device *rdev;
1954
1955 rtnl_lock();
1956 if (!state) {
1957 state = kzalloc(sizeof(*state), GFP_KERNEL);
1958 if (!state) {
1959 rtnl_unlock();
1960 return -ENOMEM;
1961 }
1962 state->filter_wiphy = -1;
1963 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1964 if (ret) {
1965 kfree(state);
1966 rtnl_unlock();
1967 return ret;
1968 }
1969 cb->args[0] = (long)state;
1970 }
1971
1972 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1973 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1974 continue;
1975 if (++idx <= state->start)
1976 continue;
1977 if (state->filter_wiphy != -1 &&
1978 state->filter_wiphy != rdev->wiphy_idx)
1979 continue;
1980 /* attempt to fit multiple wiphy data chunks into the skb */
1981 do {
1982 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1983 skb,
1984 NETLINK_CB(cb->skb).portid,
1985 cb->nlh->nlmsg_seq,
1986 NLM_F_MULTI, state);
1987 if (ret < 0) {
1988 /*
1989 * If sending the wiphy data didn't fit (ENOBUFS
1990 * or EMSGSIZE returned), this SKB is still
1991 * empty (so it's not too big because another
1992 * wiphy dataset is already in the skb) and
1993 * we've not tried to adjust the dump allocation
1994 * yet ... then adjust the alloc size to be
1995 * bigger, and return 1 but with the empty skb.
1996 * This results in an empty message being RX'ed
1997 * in userspace, but that is ignored.
1998 *
1999 * We can then retry with the larger buffer.
2000 */
2001 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2002 !skb->len && !state->split &&
2003 cb->min_dump_alloc < 4096) {
2004 cb->min_dump_alloc = 4096;
2005 state->split_start = 0;
2006 rtnl_unlock();
2007 return 1;
2008 }
2009 idx--;
2010 break;
2011 }
2012 } while (state->split_start > 0);
2013 break;
2014 }
2015 rtnl_unlock();
2016
2017 state->start = idx;
2018
2019 return skb->len;
2020 }
2021
2022 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2023 {
2024 kfree((void *)cb->args[0]);
2025 return 0;
2026 }
2027
2028 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2029 {
2030 struct sk_buff *msg;
2031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2032 struct nl80211_dump_wiphy_state state = {};
2033
2034 msg = nlmsg_new(4096, GFP_KERNEL);
2035 if (!msg)
2036 return -ENOMEM;
2037
2038 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2039 info->snd_portid, info->snd_seq, 0,
2040 &state) < 0) {
2041 nlmsg_free(msg);
2042 return -ENOBUFS;
2043 }
2044
2045 return genlmsg_reply(msg, info);
2046 }
2047
2048 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2049 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2050 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2051 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2052 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2053 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2054 };
2055
2056 static int parse_txq_params(struct nlattr *tb[],
2057 struct ieee80211_txq_params *txq_params)
2058 {
2059 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2060 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2061 !tb[NL80211_TXQ_ATTR_AIFS])
2062 return -EINVAL;
2063
2064 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2065 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2066 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2067 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2068 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2069
2070 if (txq_params->ac >= NL80211_NUM_ACS)
2071 return -EINVAL;
2072
2073 return 0;
2074 }
2075
2076 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2077 {
2078 /*
2079 * You can only set the channel explicitly for WDS interfaces,
2080 * all others have their channel managed via their respective
2081 * "establish a connection" command (connect, join, ...)
2082 *
2083 * For AP/GO and mesh mode, the channel can be set with the
2084 * channel userspace API, but is only stored and passed to the
2085 * low-level driver when the AP starts or the mesh is joined.
2086 * This is for backward compatibility, userspace can also give
2087 * the channel in the start-ap or join-mesh commands instead.
2088 *
2089 * Monitors are special as they are normally slaved to
2090 * whatever else is going on, so they have their own special
2091 * operation to set the monitor channel if possible.
2092 */
2093 return !wdev ||
2094 wdev->iftype == NL80211_IFTYPE_AP ||
2095 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2096 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2097 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2098 }
2099
2100 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2101 struct genl_info *info,
2102 struct cfg80211_chan_def *chandef)
2103 {
2104 u32 control_freq;
2105
2106 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2107 return -EINVAL;
2108
2109 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2110
2111 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2112 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2113 chandef->center_freq1 = control_freq;
2114 chandef->center_freq2 = 0;
2115
2116 /* Primary channel not allowed */
2117 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2118 return -EINVAL;
2119
2120 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2121 enum nl80211_channel_type chantype;
2122
2123 chantype = nla_get_u32(
2124 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2125
2126 switch (chantype) {
2127 case NL80211_CHAN_NO_HT:
2128 case NL80211_CHAN_HT20:
2129 case NL80211_CHAN_HT40PLUS:
2130 case NL80211_CHAN_HT40MINUS:
2131 cfg80211_chandef_create(chandef, chandef->chan,
2132 chantype);
2133 /* user input for center_freq is incorrect */
2134 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2135 chandef->center_freq1 != nla_get_u32(
2136 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2137 return -EINVAL;
2138 /* center_freq2 must be zero */
2139 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2140 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2141 return -EINVAL;
2142 break;
2143 default:
2144 return -EINVAL;
2145 }
2146 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2147 chandef->width =
2148 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2149 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2150 chandef->center_freq1 =
2151 nla_get_u32(
2152 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2153 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2154 chandef->center_freq2 =
2155 nla_get_u32(
2156 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2157 }
2158
2159 if (!cfg80211_chandef_valid(chandef))
2160 return -EINVAL;
2161
2162 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2163 IEEE80211_CHAN_DISABLED))
2164 return -EINVAL;
2165
2166 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2167 chandef->width == NL80211_CHAN_WIDTH_10) &&
2168 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2169 return -EINVAL;
2170
2171 return 0;
2172 }
2173
2174 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2175 struct net_device *dev,
2176 struct genl_info *info)
2177 {
2178 struct cfg80211_chan_def chandef;
2179 int result;
2180 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2181 struct wireless_dev *wdev = NULL;
2182
2183 if (dev)
2184 wdev = dev->ieee80211_ptr;
2185 if (!nl80211_can_set_dev_channel(wdev))
2186 return -EOPNOTSUPP;
2187 if (wdev)
2188 iftype = wdev->iftype;
2189
2190 result = nl80211_parse_chandef(rdev, info, &chandef);
2191 if (result)
2192 return result;
2193
2194 switch (iftype) {
2195 case NL80211_IFTYPE_AP:
2196 case NL80211_IFTYPE_P2P_GO:
2197 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2198 iftype)) {
2199 result = -EINVAL;
2200 break;
2201 }
2202 if (wdev->beacon_interval) {
2203 if (!dev || !rdev->ops->set_ap_chanwidth ||
2204 !(rdev->wiphy.features &
2205 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2206 result = -EBUSY;
2207 break;
2208 }
2209
2210 /* Only allow dynamic channel width changes */
2211 if (chandef.chan != wdev->preset_chandef.chan) {
2212 result = -EBUSY;
2213 break;
2214 }
2215 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2216 if (result)
2217 break;
2218 }
2219 wdev->preset_chandef = chandef;
2220 result = 0;
2221 break;
2222 case NL80211_IFTYPE_MESH_POINT:
2223 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2224 break;
2225 case NL80211_IFTYPE_MONITOR:
2226 result = cfg80211_set_monitor_channel(rdev, &chandef);
2227 break;
2228 default:
2229 result = -EINVAL;
2230 }
2231
2232 return result;
2233 }
2234
2235 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2236 {
2237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2238 struct net_device *netdev = info->user_ptr[1];
2239
2240 return __nl80211_set_channel(rdev, netdev, info);
2241 }
2242
2243 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2244 {
2245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2246 struct net_device *dev = info->user_ptr[1];
2247 struct wireless_dev *wdev = dev->ieee80211_ptr;
2248 const u8 *bssid;
2249
2250 if (!info->attrs[NL80211_ATTR_MAC])
2251 return -EINVAL;
2252
2253 if (netif_running(dev))
2254 return -EBUSY;
2255
2256 if (!rdev->ops->set_wds_peer)
2257 return -EOPNOTSUPP;
2258
2259 if (wdev->iftype != NL80211_IFTYPE_WDS)
2260 return -EOPNOTSUPP;
2261
2262 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2263 return rdev_set_wds_peer(rdev, dev, bssid);
2264 }
2265
2266 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2267 {
2268 struct cfg80211_registered_device *rdev;
2269 struct net_device *netdev = NULL;
2270 struct wireless_dev *wdev;
2271 int result = 0, rem_txq_params = 0;
2272 struct nlattr *nl_txq_params;
2273 u32 changed;
2274 u8 retry_short = 0, retry_long = 0;
2275 u32 frag_threshold = 0, rts_threshold = 0;
2276 u8 coverage_class = 0;
2277
2278 ASSERT_RTNL();
2279
2280 /*
2281 * Try to find the wiphy and netdev. Normally this
2282 * function shouldn't need the netdev, but this is
2283 * done for backward compatibility -- previously
2284 * setting the channel was done per wiphy, but now
2285 * it is per netdev. Previous userland like hostapd
2286 * also passed a netdev to set_wiphy, so that it is
2287 * possible to let that go to the right netdev!
2288 */
2289
2290 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2291 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2292
2293 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2294 if (netdev && netdev->ieee80211_ptr)
2295 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2296 else
2297 netdev = NULL;
2298 }
2299
2300 if (!netdev) {
2301 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2302 info->attrs);
2303 if (IS_ERR(rdev))
2304 return PTR_ERR(rdev);
2305 wdev = NULL;
2306 netdev = NULL;
2307 result = 0;
2308 } else
2309 wdev = netdev->ieee80211_ptr;
2310
2311 /*
2312 * end workaround code, by now the rdev is available
2313 * and locked, and wdev may or may not be NULL.
2314 */
2315
2316 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2317 result = cfg80211_dev_rename(
2318 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2319
2320 if (result)
2321 return result;
2322
2323 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2324 struct ieee80211_txq_params txq_params;
2325 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2326
2327 if (!rdev->ops->set_txq_params)
2328 return -EOPNOTSUPP;
2329
2330 if (!netdev)
2331 return -EINVAL;
2332
2333 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2334 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2335 return -EINVAL;
2336
2337 if (!netif_running(netdev))
2338 return -ENETDOWN;
2339
2340 nla_for_each_nested(nl_txq_params,
2341 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2342 rem_txq_params) {
2343 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2344 nl_txq_params,
2345 txq_params_policy,
2346 info->extack);
2347 if (result)
2348 return result;
2349 result = parse_txq_params(tb, &txq_params);
2350 if (result)
2351 return result;
2352
2353 result = rdev_set_txq_params(rdev, netdev,
2354 &txq_params);
2355 if (result)
2356 return result;
2357 }
2358 }
2359
2360 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2361 result = __nl80211_set_channel(
2362 rdev,
2363 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2364 info);
2365 if (result)
2366 return result;
2367 }
2368
2369 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2370 struct wireless_dev *txp_wdev = wdev;
2371 enum nl80211_tx_power_setting type;
2372 int idx, mbm = 0;
2373
2374 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2375 txp_wdev = NULL;
2376
2377 if (!rdev->ops->set_tx_power)
2378 return -EOPNOTSUPP;
2379
2380 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2381 type = nla_get_u32(info->attrs[idx]);
2382
2383 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2384 (type != NL80211_TX_POWER_AUTOMATIC))
2385 return -EINVAL;
2386
2387 if (type != NL80211_TX_POWER_AUTOMATIC) {
2388 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2389 mbm = nla_get_u32(info->attrs[idx]);
2390 }
2391
2392 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2393 if (result)
2394 return result;
2395 }
2396
2397 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2398 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2399 u32 tx_ant, rx_ant;
2400
2401 if ((!rdev->wiphy.available_antennas_tx &&
2402 !rdev->wiphy.available_antennas_rx) ||
2403 !rdev->ops->set_antenna)
2404 return -EOPNOTSUPP;
2405
2406 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2407 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2408
2409 /* reject antenna configurations which don't match the
2410 * available antenna masks, except for the "all" mask */
2411 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2412 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2413 return -EINVAL;
2414
2415 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2416 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2417
2418 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2419 if (result)
2420 return result;
2421 }
2422
2423 changed = 0;
2424
2425 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2426 retry_short = nla_get_u8(
2427 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2428 if (retry_short == 0)
2429 return -EINVAL;
2430
2431 changed |= WIPHY_PARAM_RETRY_SHORT;
2432 }
2433
2434 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2435 retry_long = nla_get_u8(
2436 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2437 if (retry_long == 0)
2438 return -EINVAL;
2439
2440 changed |= WIPHY_PARAM_RETRY_LONG;
2441 }
2442
2443 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2444 frag_threshold = nla_get_u32(
2445 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2446 if (frag_threshold < 256)
2447 return -EINVAL;
2448
2449 if (frag_threshold != (u32) -1) {
2450 /*
2451 * Fragments (apart from the last one) are required to
2452 * have even length. Make the fragmentation code
2453 * simpler by stripping LSB should someone try to use
2454 * odd threshold value.
2455 */
2456 frag_threshold &= ~0x1;
2457 }
2458 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2459 }
2460
2461 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2462 rts_threshold = nla_get_u32(
2463 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2464 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2465 }
2466
2467 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2468 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2469 return -EINVAL;
2470
2471 coverage_class = nla_get_u8(
2472 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2473 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2474 }
2475
2476 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2477 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2478 return -EOPNOTSUPP;
2479
2480 changed |= WIPHY_PARAM_DYN_ACK;
2481 }
2482
2483 if (changed) {
2484 u8 old_retry_short, old_retry_long;
2485 u32 old_frag_threshold, old_rts_threshold;
2486 u8 old_coverage_class;
2487
2488 if (!rdev->ops->set_wiphy_params)
2489 return -EOPNOTSUPP;
2490
2491 old_retry_short = rdev->wiphy.retry_short;
2492 old_retry_long = rdev->wiphy.retry_long;
2493 old_frag_threshold = rdev->wiphy.frag_threshold;
2494 old_rts_threshold = rdev->wiphy.rts_threshold;
2495 old_coverage_class = rdev->wiphy.coverage_class;
2496
2497 if (changed & WIPHY_PARAM_RETRY_SHORT)
2498 rdev->wiphy.retry_short = retry_short;
2499 if (changed & WIPHY_PARAM_RETRY_LONG)
2500 rdev->wiphy.retry_long = retry_long;
2501 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2502 rdev->wiphy.frag_threshold = frag_threshold;
2503 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2504 rdev->wiphy.rts_threshold = rts_threshold;
2505 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2506 rdev->wiphy.coverage_class = coverage_class;
2507
2508 result = rdev_set_wiphy_params(rdev, changed);
2509 if (result) {
2510 rdev->wiphy.retry_short = old_retry_short;
2511 rdev->wiphy.retry_long = old_retry_long;
2512 rdev->wiphy.frag_threshold = old_frag_threshold;
2513 rdev->wiphy.rts_threshold = old_rts_threshold;
2514 rdev->wiphy.coverage_class = old_coverage_class;
2515 return result;
2516 }
2517 }
2518 return 0;
2519 }
2520
2521 static inline u64 wdev_id(struct wireless_dev *wdev)
2522 {
2523 return (u64)wdev->identifier |
2524 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2525 }
2526
2527 static int nl80211_send_chandef(struct sk_buff *msg,
2528 const struct cfg80211_chan_def *chandef)
2529 {
2530 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2531 return -EINVAL;
2532
2533 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2534 chandef->chan->center_freq))
2535 return -ENOBUFS;
2536 switch (chandef->width) {
2537 case NL80211_CHAN_WIDTH_20_NOHT:
2538 case NL80211_CHAN_WIDTH_20:
2539 case NL80211_CHAN_WIDTH_40:
2540 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2541 cfg80211_get_chandef_type(chandef)))
2542 return -ENOBUFS;
2543 break;
2544 default:
2545 break;
2546 }
2547 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2548 return -ENOBUFS;
2549 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2550 return -ENOBUFS;
2551 if (chandef->center_freq2 &&
2552 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2553 return -ENOBUFS;
2554 return 0;
2555 }
2556
2557 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2558 struct cfg80211_registered_device *rdev,
2559 struct wireless_dev *wdev, bool removal)
2560 {
2561 struct net_device *dev = wdev->netdev;
2562 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2563 void *hdr;
2564
2565 if (removal)
2566 cmd = NL80211_CMD_DEL_INTERFACE;
2567
2568 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2569 if (!hdr)
2570 return -1;
2571
2572 if (dev &&
2573 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2574 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2575 goto nla_put_failure;
2576
2577 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2578 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2579 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2580 NL80211_ATTR_PAD) ||
2581 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2582 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2583 rdev->devlist_generation ^
2584 (cfg80211_rdev_list_generation << 2)))
2585 goto nla_put_failure;
2586
2587 if (rdev->ops->get_channel) {
2588 int ret;
2589 struct cfg80211_chan_def chandef;
2590
2591 ret = rdev_get_channel(rdev, wdev, &chandef);
2592 if (ret == 0) {
2593 if (nl80211_send_chandef(msg, &chandef))
2594 goto nla_put_failure;
2595 }
2596 }
2597
2598 if (rdev->ops->get_tx_power) {
2599 int dbm, ret;
2600
2601 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2602 if (ret == 0 &&
2603 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2604 DBM_TO_MBM(dbm)))
2605 goto nla_put_failure;
2606 }
2607
2608 wdev_lock(wdev);
2609 switch (wdev->iftype) {
2610 case NL80211_IFTYPE_AP:
2611 if (wdev->ssid_len &&
2612 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2613 goto nla_put_failure_locked;
2614 break;
2615 case NL80211_IFTYPE_STATION:
2616 case NL80211_IFTYPE_P2P_CLIENT:
2617 case NL80211_IFTYPE_ADHOC: {
2618 const u8 *ssid_ie;
2619 if (!wdev->current_bss)
2620 break;
2621 rcu_read_lock();
2622 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2623 WLAN_EID_SSID);
2624 if (ssid_ie &&
2625 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2626 goto nla_put_failure_rcu_locked;
2627 rcu_read_unlock();
2628 break;
2629 }
2630 default:
2631 /* nothing */
2632 break;
2633 }
2634 wdev_unlock(wdev);
2635
2636 genlmsg_end(msg, hdr);
2637 return 0;
2638
2639 nla_put_failure_rcu_locked:
2640 rcu_read_unlock();
2641 nla_put_failure_locked:
2642 wdev_unlock(wdev);
2643 nla_put_failure:
2644 genlmsg_cancel(msg, hdr);
2645 return -EMSGSIZE;
2646 }
2647
2648 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2649 {
2650 int wp_idx = 0;
2651 int if_idx = 0;
2652 int wp_start = cb->args[0];
2653 int if_start = cb->args[1];
2654 int filter_wiphy = -1;
2655 struct cfg80211_registered_device *rdev;
2656 struct wireless_dev *wdev;
2657 int ret;
2658
2659 rtnl_lock();
2660 if (!cb->args[2]) {
2661 struct nl80211_dump_wiphy_state state = {
2662 .filter_wiphy = -1,
2663 };
2664
2665 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2666 if (ret)
2667 goto out_unlock;
2668
2669 filter_wiphy = state.filter_wiphy;
2670
2671 /*
2672 * if filtering, set cb->args[2] to +1 since 0 is the default
2673 * value needed to determine that parsing is necessary.
2674 */
2675 if (filter_wiphy >= 0)
2676 cb->args[2] = filter_wiphy + 1;
2677 else
2678 cb->args[2] = -1;
2679 } else if (cb->args[2] > 0) {
2680 filter_wiphy = cb->args[2] - 1;
2681 }
2682
2683 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2684 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2685 continue;
2686 if (wp_idx < wp_start) {
2687 wp_idx++;
2688 continue;
2689 }
2690
2691 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2692 continue;
2693
2694 if_idx = 0;
2695
2696 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2697 if (if_idx < if_start) {
2698 if_idx++;
2699 continue;
2700 }
2701 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2702 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2703 rdev, wdev, false) < 0) {
2704 goto out;
2705 }
2706 if_idx++;
2707 }
2708
2709 wp_idx++;
2710 }
2711 out:
2712 cb->args[0] = wp_idx;
2713 cb->args[1] = if_idx;
2714
2715 ret = skb->len;
2716 out_unlock:
2717 rtnl_unlock();
2718
2719 return ret;
2720 }
2721
2722 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2723 {
2724 struct sk_buff *msg;
2725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2726 struct wireless_dev *wdev = info->user_ptr[1];
2727
2728 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2729 if (!msg)
2730 return -ENOMEM;
2731
2732 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2733 rdev, wdev, false) < 0) {
2734 nlmsg_free(msg);
2735 return -ENOBUFS;
2736 }
2737
2738 return genlmsg_reply(msg, info);
2739 }
2740
2741 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2742 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2743 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2744 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2745 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2746 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2747 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2748 };
2749
2750 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2751 {
2752 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2753 int flag;
2754
2755 *mntrflags = 0;
2756
2757 if (!nla)
2758 return -EINVAL;
2759
2760 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2761 mntr_flags_policy, NULL))
2762 return -EINVAL;
2763
2764 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2765 if (flags[flag])
2766 *mntrflags |= (1<<flag);
2767
2768 *mntrflags |= MONITOR_FLAG_CHANGED;
2769
2770 return 0;
2771 }
2772
2773 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2774 enum nl80211_iftype type,
2775 struct genl_info *info,
2776 struct vif_params *params)
2777 {
2778 bool change = false;
2779 int err;
2780
2781 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2782 if (type != NL80211_IFTYPE_MONITOR)
2783 return -EINVAL;
2784
2785 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2786 &params->flags);
2787 if (err)
2788 return err;
2789
2790 change = true;
2791 }
2792
2793 if (params->flags & MONITOR_FLAG_ACTIVE &&
2794 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2795 return -EOPNOTSUPP;
2796
2797 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2798 const u8 *mumimo_groups;
2799 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2800
2801 if (type != NL80211_IFTYPE_MONITOR)
2802 return -EINVAL;
2803
2804 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2805 return -EOPNOTSUPP;
2806
2807 mumimo_groups =
2808 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2809
2810 /* bits 0 and 63 are reserved and must be zero */
2811 if ((mumimo_groups[0] & BIT(0)) ||
2812 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2813 return -EINVAL;
2814
2815 params->vht_mumimo_groups = mumimo_groups;
2816 change = true;
2817 }
2818
2819 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2820 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2821
2822 if (type != NL80211_IFTYPE_MONITOR)
2823 return -EINVAL;
2824
2825 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826 return -EOPNOTSUPP;
2827
2828 params->vht_mumimo_follow_addr =
2829 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2830 change = true;
2831 }
2832
2833 return change ? 1 : 0;
2834 }
2835
2836 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2837 struct net_device *netdev, u8 use_4addr,
2838 enum nl80211_iftype iftype)
2839 {
2840 if (!use_4addr) {
2841 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2842 return -EBUSY;
2843 return 0;
2844 }
2845
2846 switch (iftype) {
2847 case NL80211_IFTYPE_AP_VLAN:
2848 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2849 return 0;
2850 break;
2851 case NL80211_IFTYPE_STATION:
2852 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2853 return 0;
2854 break;
2855 default:
2856 break;
2857 }
2858
2859 return -EOPNOTSUPP;
2860 }
2861
2862 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2863 {
2864 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2865 struct vif_params params;
2866 int err;
2867 enum nl80211_iftype otype, ntype;
2868 struct net_device *dev = info->user_ptr[1];
2869 bool change = false;
2870
2871 memset(&params, 0, sizeof(params));
2872
2873 otype = ntype = dev->ieee80211_ptr->iftype;
2874
2875 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2876 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2877 if (otype != ntype)
2878 change = true;
2879 if (ntype > NL80211_IFTYPE_MAX)
2880 return -EINVAL;
2881 }
2882
2883 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2884 struct wireless_dev *wdev = dev->ieee80211_ptr;
2885
2886 if (ntype != NL80211_IFTYPE_MESH_POINT)
2887 return -EINVAL;
2888 if (netif_running(dev))
2889 return -EBUSY;
2890
2891 wdev_lock(wdev);
2892 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2893 IEEE80211_MAX_MESH_ID_LEN);
2894 wdev->mesh_id_up_len =
2895 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2896 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2897 wdev->mesh_id_up_len);
2898 wdev_unlock(wdev);
2899 }
2900
2901 if (info->attrs[NL80211_ATTR_4ADDR]) {
2902 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2903 change = true;
2904 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2905 if (err)
2906 return err;
2907 } else {
2908 params.use_4addr = -1;
2909 }
2910
2911 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2912 if (err < 0)
2913 return err;
2914 if (err > 0)
2915 change = true;
2916
2917 if (change)
2918 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2919 else
2920 err = 0;
2921
2922 if (!err && params.use_4addr != -1)
2923 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2924
2925 return err;
2926 }
2927
2928 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2929 {
2930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2931 struct vif_params params;
2932 struct wireless_dev *wdev;
2933 struct sk_buff *msg;
2934 int err;
2935 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2936
2937 /* to avoid failing a new interface creation due to pending removal */
2938 cfg80211_destroy_ifaces(rdev);
2939
2940 memset(&params, 0, sizeof(params));
2941
2942 if (!info->attrs[NL80211_ATTR_IFNAME])
2943 return -EINVAL;
2944
2945 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2946 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2947 if (type > NL80211_IFTYPE_MAX)
2948 return -EINVAL;
2949 }
2950
2951 if (!rdev->ops->add_virtual_intf ||
2952 !(rdev->wiphy.interface_modes & (1 << type)))
2953 return -EOPNOTSUPP;
2954
2955 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2956 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2957 info->attrs[NL80211_ATTR_MAC]) {
2958 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2959 ETH_ALEN);
2960 if (!is_valid_ether_addr(params.macaddr))
2961 return -EADDRNOTAVAIL;
2962 }
2963
2964 if (info->attrs[NL80211_ATTR_4ADDR]) {
2965 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2966 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2967 if (err)
2968 return err;
2969 }
2970
2971 err = nl80211_parse_mon_options(rdev, type, info, &params);
2972 if (err < 0)
2973 return err;
2974
2975 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2976 if (!msg)
2977 return -ENOMEM;
2978
2979 wdev = rdev_add_virtual_intf(rdev,
2980 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2981 NET_NAME_USER, type, &params);
2982 if (WARN_ON(!wdev)) {
2983 nlmsg_free(msg);
2984 return -EPROTO;
2985 } else if (IS_ERR(wdev)) {
2986 nlmsg_free(msg);
2987 return PTR_ERR(wdev);
2988 }
2989
2990 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2991 wdev->owner_nlportid = info->snd_portid;
2992
2993 switch (type) {
2994 case NL80211_IFTYPE_MESH_POINT:
2995 if (!info->attrs[NL80211_ATTR_MESH_ID])
2996 break;
2997 wdev_lock(wdev);
2998 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2999 IEEE80211_MAX_MESH_ID_LEN);
3000 wdev->mesh_id_up_len =
3001 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3002 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3003 wdev->mesh_id_up_len);
3004 wdev_unlock(wdev);
3005 break;
3006 case NL80211_IFTYPE_NAN:
3007 case NL80211_IFTYPE_P2P_DEVICE:
3008 /*
3009 * P2P Device and NAN do not have a netdev, so don't go
3010 * through the netdev notifier and must be added here
3011 */
3012 mutex_init(&wdev->mtx);
3013 INIT_LIST_HEAD(&wdev->event_list);
3014 spin_lock_init(&wdev->event_lock);
3015 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3016 spin_lock_init(&wdev->mgmt_registrations_lock);
3017
3018 wdev->identifier = ++rdev->wdev_id;
3019 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3020 rdev->devlist_generation++;
3021 break;
3022 default:
3023 break;
3024 }
3025
3026 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3027 rdev, wdev, false) < 0) {
3028 nlmsg_free(msg);
3029 return -ENOBUFS;
3030 }
3031
3032 /*
3033 * For wdevs which have no associated netdev object (e.g. of type
3034 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3035 * For all other types, the event will be generated from the
3036 * netdev notifier
3037 */
3038 if (!wdev->netdev)
3039 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3040
3041 return genlmsg_reply(msg, info);
3042 }
3043
3044 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3045 {
3046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3047 struct wireless_dev *wdev = info->user_ptr[1];
3048
3049 if (!rdev->ops->del_virtual_intf)
3050 return -EOPNOTSUPP;
3051
3052 /*
3053 * If we remove a wireless device without a netdev then clear
3054 * user_ptr[1] so that nl80211_post_doit won't dereference it
3055 * to check if it needs to do dev_put(). Otherwise it crashes
3056 * since the wdev has been freed, unlike with a netdev where
3057 * we need the dev_put() for the netdev to really be freed.
3058 */
3059 if (!wdev->netdev)
3060 info->user_ptr[1] = NULL;
3061
3062 return rdev_del_virtual_intf(rdev, wdev);
3063 }
3064
3065 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3066 {
3067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3068 struct net_device *dev = info->user_ptr[1];
3069 u16 noack_map;
3070
3071 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3072 return -EINVAL;
3073
3074 if (!rdev->ops->set_noack_map)
3075 return -EOPNOTSUPP;
3076
3077 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3078
3079 return rdev_set_noack_map(rdev, dev, noack_map);
3080 }
3081
3082 struct get_key_cookie {
3083 struct sk_buff *msg;
3084 int error;
3085 int idx;
3086 };
3087
3088 static void get_key_callback(void *c, struct key_params *params)
3089 {
3090 struct nlattr *key;
3091 struct get_key_cookie *cookie = c;
3092
3093 if ((params->key &&
3094 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3095 params->key_len, params->key)) ||
3096 (params->seq &&
3097 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3098 params->seq_len, params->seq)) ||
3099 (params->cipher &&
3100 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3101 params->cipher)))
3102 goto nla_put_failure;
3103
3104 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3105 if (!key)
3106 goto nla_put_failure;
3107
3108 if ((params->key &&
3109 nla_put(cookie->msg, NL80211_KEY_DATA,
3110 params->key_len, params->key)) ||
3111 (params->seq &&
3112 nla_put(cookie->msg, NL80211_KEY_SEQ,
3113 params->seq_len, params->seq)) ||
3114 (params->cipher &&
3115 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3116 params->cipher)))
3117 goto nla_put_failure;
3118
3119 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3120 goto nla_put_failure;
3121
3122 nla_nest_end(cookie->msg, key);
3123
3124 return;
3125 nla_put_failure:
3126 cookie->error = 1;
3127 }
3128
3129 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3130 {
3131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3132 int err;
3133 struct net_device *dev = info->user_ptr[1];
3134 u8 key_idx = 0;
3135 const u8 *mac_addr = NULL;
3136 bool pairwise;
3137 struct get_key_cookie cookie = {
3138 .error = 0,
3139 };
3140 void *hdr;
3141 struct sk_buff *msg;
3142
3143 if (info->attrs[NL80211_ATTR_KEY_IDX])
3144 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3145
3146 if (key_idx > 5)
3147 return -EINVAL;
3148
3149 if (info->attrs[NL80211_ATTR_MAC])
3150 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3151
3152 pairwise = !!mac_addr;
3153 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3154 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3155
3156 if (kt >= NUM_NL80211_KEYTYPES)
3157 return -EINVAL;
3158 if (kt != NL80211_KEYTYPE_GROUP &&
3159 kt != NL80211_KEYTYPE_PAIRWISE)
3160 return -EINVAL;
3161 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3162 }
3163
3164 if (!rdev->ops->get_key)
3165 return -EOPNOTSUPP;
3166
3167 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3168 return -ENOENT;
3169
3170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3171 if (!msg)
3172 return -ENOMEM;
3173
3174 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3175 NL80211_CMD_NEW_KEY);
3176 if (!hdr)
3177 goto nla_put_failure;
3178
3179 cookie.msg = msg;
3180 cookie.idx = key_idx;
3181
3182 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3183 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3184 goto nla_put_failure;
3185 if (mac_addr &&
3186 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3187 goto nla_put_failure;
3188
3189 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3190 get_key_callback);
3191
3192 if (err)
3193 goto free_msg;
3194
3195 if (cookie.error)
3196 goto nla_put_failure;
3197
3198 genlmsg_end(msg, hdr);
3199 return genlmsg_reply(msg, info);
3200
3201 nla_put_failure:
3202 err = -ENOBUFS;
3203 free_msg:
3204 nlmsg_free(msg);
3205 return err;
3206 }
3207
3208 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3209 {
3210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3211 struct key_parse key;
3212 int err;
3213 struct net_device *dev = info->user_ptr[1];
3214
3215 err = nl80211_parse_key(info, &key);
3216 if (err)
3217 return err;
3218
3219 if (key.idx < 0)
3220 return -EINVAL;
3221
3222 /* only support setting default key */
3223 if (!key.def && !key.defmgmt)
3224 return -EINVAL;
3225
3226 wdev_lock(dev->ieee80211_ptr);
3227
3228 if (key.def) {
3229 if (!rdev->ops->set_default_key) {
3230 err = -EOPNOTSUPP;
3231 goto out;
3232 }
3233
3234 err = nl80211_key_allowed(dev->ieee80211_ptr);
3235 if (err)
3236 goto out;
3237
3238 err = rdev_set_default_key(rdev, dev, key.idx,
3239 key.def_uni, key.def_multi);
3240
3241 if (err)
3242 goto out;
3243
3244 #ifdef CONFIG_CFG80211_WEXT
3245 dev->ieee80211_ptr->wext.default_key = key.idx;
3246 #endif
3247 } else {
3248 if (key.def_uni || !key.def_multi) {
3249 err = -EINVAL;
3250 goto out;
3251 }
3252
3253 if (!rdev->ops->set_default_mgmt_key) {
3254 err = -EOPNOTSUPP;
3255 goto out;
3256 }
3257
3258 err = nl80211_key_allowed(dev->ieee80211_ptr);
3259 if (err)
3260 goto out;
3261
3262 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3263 if (err)
3264 goto out;
3265
3266 #ifdef CONFIG_CFG80211_WEXT
3267 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3268 #endif
3269 }
3270
3271 out:
3272 wdev_unlock(dev->ieee80211_ptr);
3273
3274 return err;
3275 }
3276
3277 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3278 {
3279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3280 int err;
3281 struct net_device *dev = info->user_ptr[1];
3282 struct key_parse key;
3283 const u8 *mac_addr = NULL;
3284
3285 err = nl80211_parse_key(info, &key);
3286 if (err)
3287 return err;
3288
3289 if (!key.p.key)
3290 return -EINVAL;
3291
3292 if (info->attrs[NL80211_ATTR_MAC])
3293 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3294
3295 if (key.type == -1) {
3296 if (mac_addr)
3297 key.type = NL80211_KEYTYPE_PAIRWISE;
3298 else
3299 key.type = NL80211_KEYTYPE_GROUP;
3300 }
3301
3302 /* for now */
3303 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3304 key.type != NL80211_KEYTYPE_GROUP)
3305 return -EINVAL;
3306
3307 if (!rdev->ops->add_key)
3308 return -EOPNOTSUPP;
3309
3310 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3311 key.type == NL80211_KEYTYPE_PAIRWISE,
3312 mac_addr))
3313 return -EINVAL;
3314
3315 wdev_lock(dev->ieee80211_ptr);
3316 err = nl80211_key_allowed(dev->ieee80211_ptr);
3317 if (!err)
3318 err = rdev_add_key(rdev, dev, key.idx,
3319 key.type == NL80211_KEYTYPE_PAIRWISE,
3320 mac_addr, &key.p);
3321 wdev_unlock(dev->ieee80211_ptr);
3322
3323 return err;
3324 }
3325
3326 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3327 {
3328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3329 int err;
3330 struct net_device *dev = info->user_ptr[1];
3331 u8 *mac_addr = NULL;
3332 struct key_parse key;
3333
3334 err = nl80211_parse_key(info, &key);
3335 if (err)
3336 return err;
3337
3338 if (info->attrs[NL80211_ATTR_MAC])
3339 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3340
3341 if (key.type == -1) {
3342 if (mac_addr)
3343 key.type = NL80211_KEYTYPE_PAIRWISE;
3344 else
3345 key.type = NL80211_KEYTYPE_GROUP;
3346 }
3347
3348 /* for now */
3349 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3350 key.type != NL80211_KEYTYPE_GROUP)
3351 return -EINVAL;
3352
3353 if (!rdev->ops->del_key)
3354 return -EOPNOTSUPP;
3355
3356 wdev_lock(dev->ieee80211_ptr);
3357 err = nl80211_key_allowed(dev->ieee80211_ptr);
3358
3359 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3360 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3361 err = -ENOENT;
3362
3363 if (!err)
3364 err = rdev_del_key(rdev, dev, key.idx,
3365 key.type == NL80211_KEYTYPE_PAIRWISE,
3366 mac_addr);
3367
3368 #ifdef CONFIG_CFG80211_WEXT
3369 if (!err) {
3370 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3371 dev->ieee80211_ptr->wext.default_key = -1;
3372 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3373 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3374 }
3375 #endif
3376 wdev_unlock(dev->ieee80211_ptr);
3377
3378 return err;
3379 }
3380
3381 /* This function returns an error or the number of nested attributes */
3382 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3383 {
3384 struct nlattr *attr;
3385 int n_entries = 0, tmp;
3386
3387 nla_for_each_nested(attr, nl_attr, tmp) {
3388 if (nla_len(attr) != ETH_ALEN)
3389 return -EINVAL;
3390
3391 n_entries++;
3392 }
3393
3394 return n_entries;
3395 }
3396
3397 /*
3398 * This function parses ACL information and allocates memory for ACL data.
3399 * On successful return, the calling function is responsible to free the
3400 * ACL buffer returned by this function.
3401 */
3402 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3403 struct genl_info *info)
3404 {
3405 enum nl80211_acl_policy acl_policy;
3406 struct nlattr *attr;
3407 struct cfg80211_acl_data *acl;
3408 int i = 0, n_entries, tmp;
3409
3410 if (!wiphy->max_acl_mac_addrs)
3411 return ERR_PTR(-EOPNOTSUPP);
3412
3413 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3414 return ERR_PTR(-EINVAL);
3415
3416 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3417 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3418 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3419 return ERR_PTR(-EINVAL);
3420
3421 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3422 return ERR_PTR(-EINVAL);
3423
3424 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3425 if (n_entries < 0)
3426 return ERR_PTR(n_entries);
3427
3428 if (n_entries > wiphy->max_acl_mac_addrs)
3429 return ERR_PTR(-ENOTSUPP);
3430
3431 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3432 GFP_KERNEL);
3433 if (!acl)
3434 return ERR_PTR(-ENOMEM);
3435
3436 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3437 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3438 i++;
3439 }
3440
3441 acl->n_acl_entries = n_entries;
3442 acl->acl_policy = acl_policy;
3443
3444 return acl;
3445 }
3446
3447 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3448 {
3449 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3450 struct net_device *dev = info->user_ptr[1];
3451 struct cfg80211_acl_data *acl;
3452 int err;
3453
3454 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3455 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3456 return -EOPNOTSUPP;
3457
3458 if (!dev->ieee80211_ptr->beacon_interval)
3459 return -EINVAL;
3460
3461 acl = parse_acl_data(&rdev->wiphy, info);
3462 if (IS_ERR(acl))
3463 return PTR_ERR(acl);
3464
3465 err = rdev_set_mac_acl(rdev, dev, acl);
3466
3467 kfree(acl);
3468
3469 return err;
3470 }
3471
3472 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3473 u8 *rates, u8 rates_len)
3474 {
3475 u8 i;
3476 u32 mask = 0;
3477
3478 for (i = 0; i < rates_len; i++) {
3479 int rate = (rates[i] & 0x7f) * 5;
3480 int ridx;
3481
3482 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3483 struct ieee80211_rate *srate =
3484 &sband->bitrates[ridx];
3485 if (rate == srate->bitrate) {
3486 mask |= 1 << ridx;
3487 break;
3488 }
3489 }
3490 if (ridx == sband->n_bitrates)
3491 return 0; /* rate not found */
3492 }
3493
3494 return mask;
3495 }
3496
3497 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3498 u8 *rates, u8 rates_len,
3499 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3500 {
3501 u8 i;
3502
3503 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3504
3505 for (i = 0; i < rates_len; i++) {
3506 int ridx, rbit;
3507
3508 ridx = rates[i] / 8;
3509 rbit = BIT(rates[i] % 8);
3510
3511 /* check validity */
3512 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3513 return false;
3514
3515 /* check availability */
3516 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3517 mcs[ridx] |= rbit;
3518 else
3519 return false;
3520 }
3521
3522 return true;
3523 }
3524
3525 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3526 {
3527 u16 mcs_mask = 0;
3528
3529 switch (vht_mcs_map) {
3530 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3531 break;
3532 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3533 mcs_mask = 0x00FF;
3534 break;
3535 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3536 mcs_mask = 0x01FF;
3537 break;
3538 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3539 mcs_mask = 0x03FF;
3540 break;
3541 default:
3542 break;
3543 }
3544
3545 return mcs_mask;
3546 }
3547
3548 static void vht_build_mcs_mask(u16 vht_mcs_map,
3549 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3550 {
3551 u8 nss;
3552
3553 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3554 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3555 vht_mcs_map >>= 2;
3556 }
3557 }
3558
3559 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3560 struct nl80211_txrate_vht *txrate,
3561 u16 mcs[NL80211_VHT_NSS_MAX])
3562 {
3563 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3564 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3565 u8 i;
3566
3567 if (!sband->vht_cap.vht_supported)
3568 return false;
3569
3570 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3571
3572 /* Build vht_mcs_mask from VHT capabilities */
3573 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3574
3575 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3576 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3577 mcs[i] = txrate->mcs[i];
3578 else
3579 return false;
3580 }
3581
3582 return true;
3583 }
3584
3585 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3586 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3587 .len = NL80211_MAX_SUPP_RATES },
3588 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3589 .len = NL80211_MAX_SUPP_HT_RATES },
3590 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3591 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3592 };
3593
3594 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3595 struct cfg80211_bitrate_mask *mask)
3596 {
3597 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3599 int rem, i;
3600 struct nlattr *tx_rates;
3601 struct ieee80211_supported_band *sband;
3602 u16 vht_tx_mcs_map;
3603
3604 memset(mask, 0, sizeof(*mask));
3605 /* Default to all rates enabled */
3606 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3607 sband = rdev->wiphy.bands[i];
3608
3609 if (!sband)
3610 continue;
3611
3612 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3613 memcpy(mask->control[i].ht_mcs,
3614 sband->ht_cap.mcs.rx_mask,
3615 sizeof(mask->control[i].ht_mcs));
3616
3617 if (!sband->vht_cap.vht_supported)
3618 continue;
3619
3620 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3621 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3622 }
3623
3624 /* if no rates are given set it back to the defaults */
3625 if (!info->attrs[NL80211_ATTR_TX_RATES])
3626 goto out;
3627
3628 /* The nested attribute uses enum nl80211_band as the index. This maps
3629 * directly to the enum nl80211_band values used in cfg80211.
3630 */
3631 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3632 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3633 enum nl80211_band band = nla_type(tx_rates);
3634 int err;
3635
3636 if (band < 0 || band >= NUM_NL80211_BANDS)
3637 return -EINVAL;
3638 sband = rdev->wiphy.bands[band];
3639 if (sband == NULL)
3640 return -EINVAL;
3641 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3642 nl80211_txattr_policy, info->extack);
3643 if (err)
3644 return err;
3645 if (tb[NL80211_TXRATE_LEGACY]) {
3646 mask->control[band].legacy = rateset_to_mask(
3647 sband,
3648 nla_data(tb[NL80211_TXRATE_LEGACY]),
3649 nla_len(tb[NL80211_TXRATE_LEGACY]));
3650 if ((mask->control[band].legacy == 0) &&
3651 nla_len(tb[NL80211_TXRATE_LEGACY]))
3652 return -EINVAL;
3653 }
3654 if (tb[NL80211_TXRATE_HT]) {
3655 if (!ht_rateset_to_mask(
3656 sband,
3657 nla_data(tb[NL80211_TXRATE_HT]),
3658 nla_len(tb[NL80211_TXRATE_HT]),
3659 mask->control[band].ht_mcs))
3660 return -EINVAL;
3661 }
3662 if (tb[NL80211_TXRATE_VHT]) {
3663 if (!vht_set_mcs_mask(
3664 sband,
3665 nla_data(tb[NL80211_TXRATE_VHT]),
3666 mask->control[band].vht_mcs))
3667 return -EINVAL;
3668 }
3669 if (tb[NL80211_TXRATE_GI]) {
3670 mask->control[band].gi =
3671 nla_get_u8(tb[NL80211_TXRATE_GI]);
3672 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3673 return -EINVAL;
3674 }
3675
3676 if (mask->control[band].legacy == 0) {
3677 /* don't allow empty legacy rates if HT or VHT
3678 * are not even supported.
3679 */
3680 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3681 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3682 return -EINVAL;
3683
3684 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3685 if (mask->control[band].ht_mcs[i])
3686 goto out;
3687
3688 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3689 if (mask->control[band].vht_mcs[i])
3690 goto out;
3691
3692 /* legacy and mcs rates may not be both empty */
3693 return -EINVAL;
3694 }
3695 }
3696
3697 out:
3698 return 0;
3699 }
3700
3701 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3702 enum nl80211_band band,
3703 struct cfg80211_bitrate_mask *beacon_rate)
3704 {
3705 u32 count_ht, count_vht, i;
3706 u32 rate = beacon_rate->control[band].legacy;
3707
3708 /* Allow only one rate */
3709 if (hweight32(rate) > 1)
3710 return -EINVAL;
3711
3712 count_ht = 0;
3713 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3714 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3715 return -EINVAL;
3716 } else if (beacon_rate->control[band].ht_mcs[i]) {
3717 count_ht++;
3718 if (count_ht > 1)
3719 return -EINVAL;
3720 }
3721 if (count_ht && rate)
3722 return -EINVAL;
3723 }
3724
3725 count_vht = 0;
3726 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3727 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3728 return -EINVAL;
3729 } else if (beacon_rate->control[band].vht_mcs[i]) {
3730 count_vht++;
3731 if (count_vht > 1)
3732 return -EINVAL;
3733 }
3734 if (count_vht && rate)
3735 return -EINVAL;
3736 }
3737
3738 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3739 return -EINVAL;
3740
3741 if (rate &&
3742 !wiphy_ext_feature_isset(&rdev->wiphy,
3743 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3744 return -EINVAL;
3745 if (count_ht &&
3746 !wiphy_ext_feature_isset(&rdev->wiphy,
3747 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3748 return -EINVAL;
3749 if (count_vht &&
3750 !wiphy_ext_feature_isset(&rdev->wiphy,
3751 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3752 return -EINVAL;
3753
3754 return 0;
3755 }
3756
3757 static int nl80211_parse_beacon(struct nlattr *attrs[],
3758 struct cfg80211_beacon_data *bcn)
3759 {
3760 bool haveinfo = false;
3761
3762 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3763 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3764 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3765 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3766 return -EINVAL;
3767
3768 memset(bcn, 0, sizeof(*bcn));
3769
3770 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3771 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3772 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3773 if (!bcn->head_len)
3774 return -EINVAL;
3775 haveinfo = true;
3776 }
3777
3778 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3779 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3780 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3781 haveinfo = true;
3782 }
3783
3784 if (!haveinfo)
3785 return -EINVAL;
3786
3787 if (attrs[NL80211_ATTR_IE]) {
3788 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3789 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3790 }
3791
3792 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3793 bcn->proberesp_ies =
3794 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3795 bcn->proberesp_ies_len =
3796 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3797 }
3798
3799 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3800 bcn->assocresp_ies =
3801 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3802 bcn->assocresp_ies_len =
3803 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3804 }
3805
3806 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3807 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3808 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3809 }
3810
3811 return 0;
3812 }
3813
3814 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3815 const u8 *rates)
3816 {
3817 int i;
3818
3819 if (!rates)
3820 return;
3821
3822 for (i = 0; i < rates[1]; i++) {
3823 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3824 params->ht_required = true;
3825 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3826 params->vht_required = true;
3827 }
3828 }
3829
3830 /*
3831 * Since the nl80211 API didn't include, from the beginning, attributes about
3832 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3833 * benefit of drivers that rebuild IEs in the firmware.
3834 */
3835 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3836 {
3837 const struct cfg80211_beacon_data *bcn = &params->beacon;
3838 size_t ies_len = bcn->tail_len;
3839 const u8 *ies = bcn->tail;
3840 const u8 *rates;
3841 const u8 *cap;
3842
3843 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3844 nl80211_check_ap_rate_selectors(params, rates);
3845
3846 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3847 nl80211_check_ap_rate_selectors(params, rates);
3848
3849 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3850 if (cap && cap[1] >= sizeof(*params->ht_cap))
3851 params->ht_cap = (void *)(cap + 2);
3852 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3853 if (cap && cap[1] >= sizeof(*params->vht_cap))
3854 params->vht_cap = (void *)(cap + 2);
3855 }
3856
3857 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3858 struct cfg80211_ap_settings *params)
3859 {
3860 struct wireless_dev *wdev;
3861 bool ret = false;
3862
3863 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3864 if (wdev->iftype != NL80211_IFTYPE_AP &&
3865 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3866 continue;
3867
3868 if (!wdev->preset_chandef.chan)
3869 continue;
3870
3871 params->chandef = wdev->preset_chandef;
3872 ret = true;
3873 break;
3874 }
3875
3876 return ret;
3877 }
3878
3879 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3880 enum nl80211_auth_type auth_type,
3881 enum nl80211_commands cmd)
3882 {
3883 if (auth_type > NL80211_AUTHTYPE_MAX)
3884 return false;
3885
3886 switch (cmd) {
3887 case NL80211_CMD_AUTHENTICATE:
3888 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3889 auth_type == NL80211_AUTHTYPE_SAE)
3890 return false;
3891 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3892 NL80211_EXT_FEATURE_FILS_STA) &&
3893 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3894 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3895 auth_type == NL80211_AUTHTYPE_FILS_PK))
3896 return false;
3897 return true;
3898 case NL80211_CMD_CONNECT:
3899 /* SAE not supported yet */
3900 if (auth_type == NL80211_AUTHTYPE_SAE)
3901 return false;
3902 /* FILS with SK PFS or PK not supported yet */
3903 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3904 auth_type == NL80211_AUTHTYPE_FILS_PK)
3905 return false;
3906 if (!wiphy_ext_feature_isset(
3907 &rdev->wiphy,
3908 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3909 auth_type == NL80211_AUTHTYPE_FILS_SK)
3910 return false;
3911 return true;
3912 case NL80211_CMD_START_AP:
3913 /* SAE not supported yet */
3914 if (auth_type == NL80211_AUTHTYPE_SAE)
3915 return false;
3916 /* FILS not supported yet */
3917 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3918 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3919 auth_type == NL80211_AUTHTYPE_FILS_PK)
3920 return false;
3921 return true;
3922 default:
3923 return false;
3924 }
3925 }
3926
3927 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3928 {
3929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3930 struct net_device *dev = info->user_ptr[1];
3931 struct wireless_dev *wdev = dev->ieee80211_ptr;
3932 struct cfg80211_ap_settings params;
3933 int err;
3934
3935 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3936 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3937 return -EOPNOTSUPP;
3938
3939 if (!rdev->ops->start_ap)
3940 return -EOPNOTSUPP;
3941
3942 if (wdev->beacon_interval)
3943 return -EALREADY;
3944
3945 memset(&params, 0, sizeof(params));
3946
3947 /* these are required for START_AP */
3948 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3949 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3950 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3951 return -EINVAL;
3952
3953 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3954 if (err)
3955 return err;
3956
3957 params.beacon_interval =
3958 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3959 params.dtim_period =
3960 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3961
3962 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3963 params.beacon_interval);
3964 if (err)
3965 return err;
3966
3967 /*
3968 * In theory, some of these attributes should be required here
3969 * but since they were not used when the command was originally
3970 * added, keep them optional for old user space programs to let
3971 * them continue to work with drivers that do not need the
3972 * additional information -- drivers must check!
3973 */
3974 if (info->attrs[NL80211_ATTR_SSID]) {
3975 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3976 params.ssid_len =
3977 nla_len(info->attrs[NL80211_ATTR_SSID]);
3978 if (params.ssid_len == 0 ||
3979 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3980 return -EINVAL;
3981 }
3982
3983 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3984 params.hidden_ssid = nla_get_u32(
3985 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3986 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3987 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3988 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3989 return -EINVAL;
3990 }
3991
3992 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3993
3994 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3995 params.auth_type = nla_get_u32(
3996 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3997 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3998 NL80211_CMD_START_AP))
3999 return -EINVAL;
4000 } else
4001 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4002
4003 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4004 NL80211_MAX_NR_CIPHER_SUITES);
4005 if (err)
4006 return err;
4007
4008 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4009 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4010 return -EOPNOTSUPP;
4011 params.inactivity_timeout = nla_get_u16(
4012 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4013 }
4014
4015 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4016 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4017 return -EINVAL;
4018 params.p2p_ctwindow =
4019 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4020 if (params.p2p_ctwindow > 127)
4021 return -EINVAL;
4022 if (params.p2p_ctwindow != 0 &&
4023 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4024 return -EINVAL;
4025 }
4026
4027 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4028 u8 tmp;
4029
4030 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4031 return -EINVAL;
4032 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4033 if (tmp > 1)
4034 return -EINVAL;
4035 params.p2p_opp_ps = tmp;
4036 if (params.p2p_opp_ps != 0 &&
4037 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4038 return -EINVAL;
4039 }
4040
4041 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4042 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4043 if (err)
4044 return err;
4045 } else if (wdev->preset_chandef.chan) {
4046 params.chandef = wdev->preset_chandef;
4047 } else if (!nl80211_get_ap_channel(rdev, &params))
4048 return -EINVAL;
4049
4050 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4051 wdev->iftype))
4052 return -EINVAL;
4053
4054 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4055 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4056 if (err)
4057 return err;
4058
4059 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4060 &params.beacon_rate);
4061 if (err)
4062 return err;
4063 }
4064
4065 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4066 params.smps_mode =
4067 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4068 switch (params.smps_mode) {
4069 case NL80211_SMPS_OFF:
4070 break;
4071 case NL80211_SMPS_STATIC:
4072 if (!(rdev->wiphy.features &
4073 NL80211_FEATURE_STATIC_SMPS))
4074 return -EINVAL;
4075 break;
4076 case NL80211_SMPS_DYNAMIC:
4077 if (!(rdev->wiphy.features &
4078 NL80211_FEATURE_DYNAMIC_SMPS))
4079 return -EINVAL;
4080 break;
4081 default:
4082 return -EINVAL;
4083 }
4084 } else {
4085 params.smps_mode = NL80211_SMPS_OFF;
4086 }
4087
4088 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4089 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4090 return -EOPNOTSUPP;
4091
4092 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4093 params.acl = parse_acl_data(&rdev->wiphy, info);
4094 if (IS_ERR(params.acl))
4095 return PTR_ERR(params.acl);
4096 }
4097
4098 nl80211_calculate_ap_params(&params);
4099
4100 wdev_lock(wdev);
4101 err = rdev_start_ap(rdev, dev, &params);
4102 if (!err) {
4103 wdev->preset_chandef = params.chandef;
4104 wdev->beacon_interval = params.beacon_interval;
4105 wdev->chandef = params.chandef;
4106 wdev->ssid_len = params.ssid_len;
4107 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4108 }
4109 wdev_unlock(wdev);
4110
4111 kfree(params.acl);
4112
4113 return err;
4114 }
4115
4116 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4117 {
4118 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4119 struct net_device *dev = info->user_ptr[1];
4120 struct wireless_dev *wdev = dev->ieee80211_ptr;
4121 struct cfg80211_beacon_data params;
4122 int err;
4123
4124 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4125 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4126 return -EOPNOTSUPP;
4127
4128 if (!rdev->ops->change_beacon)
4129 return -EOPNOTSUPP;
4130
4131 if (!wdev->beacon_interval)
4132 return -EINVAL;
4133
4134 err = nl80211_parse_beacon(info->attrs, &params);
4135 if (err)
4136 return err;
4137
4138 wdev_lock(wdev);
4139 err = rdev_change_beacon(rdev, dev, &params);
4140 wdev_unlock(wdev);
4141
4142 return err;
4143 }
4144
4145 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4146 {
4147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4148 struct net_device *dev = info->user_ptr[1];
4149
4150 return cfg80211_stop_ap(rdev, dev, false);
4151 }
4152
4153 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4154 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4155 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4156 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4157 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4158 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4159 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4160 };
4161
4162 static int parse_station_flags(struct genl_info *info,
4163 enum nl80211_iftype iftype,
4164 struct station_parameters *params)
4165 {
4166 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4167 struct nlattr *nla;
4168 int flag;
4169
4170 /*
4171 * Try parsing the new attribute first so userspace
4172 * can specify both for older kernels.
4173 */
4174 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4175 if (nla) {
4176 struct nl80211_sta_flag_update *sta_flags;
4177
4178 sta_flags = nla_data(nla);
4179 params->sta_flags_mask = sta_flags->mask;
4180 params->sta_flags_set = sta_flags->set;
4181 params->sta_flags_set &= params->sta_flags_mask;
4182 if ((params->sta_flags_mask |
4183 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4184 return -EINVAL;
4185 return 0;
4186 }
4187
4188 /* if present, parse the old attribute */
4189
4190 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4191 if (!nla)
4192 return 0;
4193
4194 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4195 sta_flags_policy, info->extack))
4196 return -EINVAL;
4197
4198 /*
4199 * Only allow certain flags for interface types so that
4200 * other attributes are silently ignored. Remember that
4201 * this is backward compatibility code with old userspace
4202 * and shouldn't be hit in other cases anyway.
4203 */
4204 switch (iftype) {
4205 case NL80211_IFTYPE_AP:
4206 case NL80211_IFTYPE_AP_VLAN:
4207 case NL80211_IFTYPE_P2P_GO:
4208 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4209 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4210 BIT(NL80211_STA_FLAG_WME) |
4211 BIT(NL80211_STA_FLAG_MFP);
4212 break;
4213 case NL80211_IFTYPE_P2P_CLIENT:
4214 case NL80211_IFTYPE_STATION:
4215 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4216 BIT(NL80211_STA_FLAG_TDLS_PEER);
4217 break;
4218 case NL80211_IFTYPE_MESH_POINT:
4219 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4220 BIT(NL80211_STA_FLAG_MFP) |
4221 BIT(NL80211_STA_FLAG_AUTHORIZED);
4222 default:
4223 return -EINVAL;
4224 }
4225
4226 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4227 if (flags[flag]) {
4228 params->sta_flags_set |= (1<<flag);
4229
4230 /* no longer support new API additions in old API */
4231 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4232 return -EINVAL;
4233 }
4234 }
4235
4236 return 0;
4237 }
4238
4239 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4240 int attr)
4241 {
4242 struct nlattr *rate;
4243 u32 bitrate;
4244 u16 bitrate_compat;
4245 enum nl80211_rate_info rate_flg;
4246
4247 rate = nla_nest_start(msg, attr);
4248 if (!rate)
4249 return false;
4250
4251 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4252 bitrate = cfg80211_calculate_bitrate(info);
4253 /* report 16-bit bitrate only if we can */
4254 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4255 if (bitrate > 0 &&
4256 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4257 return false;
4258 if (bitrate_compat > 0 &&
4259 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4260 return false;
4261
4262 switch (info->bw) {
4263 case RATE_INFO_BW_5:
4264 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4265 break;
4266 case RATE_INFO_BW_10:
4267 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4268 break;
4269 default:
4270 WARN_ON(1);
4271 /* fall through */
4272 case RATE_INFO_BW_20:
4273 rate_flg = 0;
4274 break;
4275 case RATE_INFO_BW_40:
4276 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4277 break;
4278 case RATE_INFO_BW_80:
4279 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4280 break;
4281 case RATE_INFO_BW_160:
4282 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4283 break;
4284 }
4285
4286 if (rate_flg && nla_put_flag(msg, rate_flg))
4287 return false;
4288
4289 if (info->flags & RATE_INFO_FLAGS_MCS) {
4290 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4291 return false;
4292 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4293 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4294 return false;
4295 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4296 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4297 return false;
4298 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4299 return false;
4300 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4301 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4302 return false;
4303 }
4304
4305 nla_nest_end(msg, rate);
4306 return true;
4307 }
4308
4309 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4310 int id)
4311 {
4312 void *attr;
4313 int i = 0;
4314
4315 if (!mask)
4316 return true;
4317
4318 attr = nla_nest_start(msg, id);
4319 if (!attr)
4320 return false;
4321
4322 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4323 if (!(mask & BIT(i)))
4324 continue;
4325
4326 if (nla_put_u8(msg, i, signal[i]))
4327 return false;
4328 }
4329
4330 nla_nest_end(msg, attr);
4331
4332 return true;
4333 }
4334
4335 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4336 u32 seq, int flags,
4337 struct cfg80211_registered_device *rdev,
4338 struct net_device *dev,
4339 const u8 *mac_addr, struct station_info *sinfo)
4340 {
4341 void *hdr;
4342 struct nlattr *sinfoattr, *bss_param;
4343
4344 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4345 if (!hdr)
4346 return -1;
4347
4348 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4349 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4350 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4351 goto nla_put_failure;
4352
4353 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4354 if (!sinfoattr)
4355 goto nla_put_failure;
4356
4357 #define PUT_SINFO(attr, memb, type) do { \
4358 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4359 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4360 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4361 sinfo->memb)) \
4362 goto nla_put_failure; \
4363 } while (0)
4364 #define PUT_SINFO_U64(attr, memb) do { \
4365 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4366 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4367 sinfo->memb, NL80211_STA_INFO_PAD)) \
4368 goto nla_put_failure; \
4369 } while (0)
4370
4371 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4372 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4373
4374 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4375 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4376 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4377 (u32)sinfo->rx_bytes))
4378 goto nla_put_failure;
4379
4380 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4381 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4382 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4383 (u32)sinfo->tx_bytes))
4384 goto nla_put_failure;
4385
4386 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4387 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4388 PUT_SINFO(LLID, llid, u16);
4389 PUT_SINFO(PLID, plid, u16);
4390 PUT_SINFO(PLINK_STATE, plink_state, u8);
4391 PUT_SINFO_U64(RX_DURATION, rx_duration);
4392
4393 switch (rdev->wiphy.signal_type) {
4394 case CFG80211_SIGNAL_TYPE_MBM:
4395 PUT_SINFO(SIGNAL, signal, u8);
4396 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4397 break;
4398 default:
4399 break;
4400 }
4401 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4402 if (!nl80211_put_signal(msg, sinfo->chains,
4403 sinfo->chain_signal,
4404 NL80211_STA_INFO_CHAIN_SIGNAL))
4405 goto nla_put_failure;
4406 }
4407 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4408 if (!nl80211_put_signal(msg, sinfo->chains,
4409 sinfo->chain_signal_avg,
4410 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4411 goto nla_put_failure;
4412 }
4413 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4414 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4415 NL80211_STA_INFO_TX_BITRATE))
4416 goto nla_put_failure;
4417 }
4418 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4419 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4420 NL80211_STA_INFO_RX_BITRATE))
4421 goto nla_put_failure;
4422 }
4423
4424 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4425 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4426 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4427 PUT_SINFO(TX_FAILED, tx_failed, u32);
4428 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4429 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4430 PUT_SINFO(LOCAL_PM, local_pm, u32);
4431 PUT_SINFO(PEER_PM, peer_pm, u32);
4432 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4433
4434 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4435 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4436 if (!bss_param)
4437 goto nla_put_failure;
4438
4439 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4440 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4441 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4442 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4443 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4444 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4445 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4446 sinfo->bss_param.dtim_period) ||
4447 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4448 sinfo->bss_param.beacon_interval))
4449 goto nla_put_failure;
4450
4451 nla_nest_end(msg, bss_param);
4452 }
4453 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4454 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4455 sizeof(struct nl80211_sta_flag_update),
4456 &sinfo->sta_flags))
4457 goto nla_put_failure;
4458
4459 PUT_SINFO_U64(T_OFFSET, t_offset);
4460 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4461 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4462 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4463
4464 #undef PUT_SINFO
4465 #undef PUT_SINFO_U64
4466
4467 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4468 struct nlattr *tidsattr;
4469 int tid;
4470
4471 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4472 if (!tidsattr)
4473 goto nla_put_failure;
4474
4475 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4476 struct cfg80211_tid_stats *tidstats;
4477 struct nlattr *tidattr;
4478
4479 tidstats = &sinfo->pertid[tid];
4480
4481 if (!tidstats->filled)
4482 continue;
4483
4484 tidattr = nla_nest_start(msg, tid + 1);
4485 if (!tidattr)
4486 goto nla_put_failure;
4487
4488 #define PUT_TIDVAL_U64(attr, memb) do { \
4489 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4490 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4491 tidstats->memb, NL80211_TID_STATS_PAD)) \
4492 goto nla_put_failure; \
4493 } while (0)
4494
4495 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4496 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4497 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4498 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4499
4500 #undef PUT_TIDVAL_U64
4501 nla_nest_end(msg, tidattr);
4502 }
4503
4504 nla_nest_end(msg, tidsattr);
4505 }
4506
4507 nla_nest_end(msg, sinfoattr);
4508
4509 if (sinfo->assoc_req_ies_len &&
4510 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4511 sinfo->assoc_req_ies))
4512 goto nla_put_failure;
4513
4514 genlmsg_end(msg, hdr);
4515 return 0;
4516
4517 nla_put_failure:
4518 genlmsg_cancel(msg, hdr);
4519 return -EMSGSIZE;
4520 }
4521
4522 static int nl80211_dump_station(struct sk_buff *skb,
4523 struct netlink_callback *cb)
4524 {
4525 struct station_info sinfo;
4526 struct cfg80211_registered_device *rdev;
4527 struct wireless_dev *wdev;
4528 u8 mac_addr[ETH_ALEN];
4529 int sta_idx = cb->args[2];
4530 int err;
4531
4532 rtnl_lock();
4533 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4534 if (err)
4535 goto out_err;
4536
4537 if (!wdev->netdev) {
4538 err = -EINVAL;
4539 goto out_err;
4540 }
4541
4542 if (!rdev->ops->dump_station) {
4543 err = -EOPNOTSUPP;
4544 goto out_err;
4545 }
4546
4547 while (1) {
4548 memset(&sinfo, 0, sizeof(sinfo));
4549 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4550 mac_addr, &sinfo);
4551 if (err == -ENOENT)
4552 break;
4553 if (err)
4554 goto out_err;
4555
4556 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4557 NETLINK_CB(cb->skb).portid,
4558 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4559 rdev, wdev->netdev, mac_addr,
4560 &sinfo) < 0)
4561 goto out;
4562
4563 sta_idx++;
4564 }
4565
4566 out:
4567 cb->args[2] = sta_idx;
4568 err = skb->len;
4569 out_err:
4570 rtnl_unlock();
4571
4572 return err;
4573 }
4574
4575 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4576 {
4577 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4578 struct net_device *dev = info->user_ptr[1];
4579 struct station_info sinfo;
4580 struct sk_buff *msg;
4581 u8 *mac_addr = NULL;
4582 int err;
4583
4584 memset(&sinfo, 0, sizeof(sinfo));
4585
4586 if (!info->attrs[NL80211_ATTR_MAC])
4587 return -EINVAL;
4588
4589 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4590
4591 if (!rdev->ops->get_station)
4592 return -EOPNOTSUPP;
4593
4594 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4595 if (err)
4596 return err;
4597
4598 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4599 if (!msg)
4600 return -ENOMEM;
4601
4602 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4603 info->snd_portid, info->snd_seq, 0,
4604 rdev, dev, mac_addr, &sinfo) < 0) {
4605 nlmsg_free(msg);
4606 return -ENOBUFS;
4607 }
4608
4609 return genlmsg_reply(msg, info);
4610 }
4611
4612 int cfg80211_check_station_change(struct wiphy *wiphy,
4613 struct station_parameters *params,
4614 enum cfg80211_station_type statype)
4615 {
4616 if (params->listen_interval != -1 &&
4617 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4618 return -EINVAL;
4619
4620 if (params->support_p2p_ps != -1 &&
4621 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4622 return -EINVAL;
4623
4624 if (params->aid &&
4625 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4626 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4627 return -EINVAL;
4628
4629 /* When you run into this, adjust the code below for the new flag */
4630 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4631
4632 switch (statype) {
4633 case CFG80211_STA_MESH_PEER_KERNEL:
4634 case CFG80211_STA_MESH_PEER_USER:
4635 /*
4636 * No ignoring the TDLS flag here -- the userspace mesh
4637 * code doesn't have the bug of including TDLS in the
4638 * mask everywhere.
4639 */
4640 if (params->sta_flags_mask &
4641 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4642 BIT(NL80211_STA_FLAG_MFP) |
4643 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4644 return -EINVAL;
4645 break;
4646 case CFG80211_STA_TDLS_PEER_SETUP:
4647 case CFG80211_STA_TDLS_PEER_ACTIVE:
4648 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4649 return -EINVAL;
4650 /* ignore since it can't change */
4651 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4652 break;
4653 default:
4654 /* disallow mesh-specific things */
4655 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4656 return -EINVAL;
4657 if (params->local_pm)
4658 return -EINVAL;
4659 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4660 return -EINVAL;
4661 }
4662
4663 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4664 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4665 /* TDLS can't be set, ... */
4666 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4667 return -EINVAL;
4668 /*
4669 * ... but don't bother the driver with it. This works around
4670 * a hostapd/wpa_supplicant issue -- it always includes the
4671 * TLDS_PEER flag in the mask even for AP mode.
4672 */
4673 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4674 }
4675
4676 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4677 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4678 /* reject other things that can't change */
4679 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4680 return -EINVAL;
4681 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4682 return -EINVAL;
4683 if (params->supported_rates)
4684 return -EINVAL;
4685 if (params->ext_capab || params->ht_capa || params->vht_capa)
4686 return -EINVAL;
4687 }
4688
4689 if (statype != CFG80211_STA_AP_CLIENT &&
4690 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4691 if (params->vlan)
4692 return -EINVAL;
4693 }
4694
4695 switch (statype) {
4696 case CFG80211_STA_AP_MLME_CLIENT:
4697 /* Use this only for authorizing/unauthorizing a station */
4698 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4699 return -EOPNOTSUPP;
4700 break;
4701 case CFG80211_STA_AP_CLIENT:
4702 case CFG80211_STA_AP_CLIENT_UNASSOC:
4703 /* accept only the listed bits */
4704 if (params->sta_flags_mask &
4705 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4706 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4707 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4708 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4709 BIT(NL80211_STA_FLAG_WME) |
4710 BIT(NL80211_STA_FLAG_MFP)))
4711 return -EINVAL;
4712
4713 /* but authenticated/associated only if driver handles it */
4714 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4715 params->sta_flags_mask &
4716 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4717 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4718 return -EINVAL;
4719 break;
4720 case CFG80211_STA_IBSS:
4721 case CFG80211_STA_AP_STA:
4722 /* reject any changes other than AUTHORIZED */
4723 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4724 return -EINVAL;
4725 break;
4726 case CFG80211_STA_TDLS_PEER_SETUP:
4727 /* reject any changes other than AUTHORIZED or WME */
4728 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4729 BIT(NL80211_STA_FLAG_WME)))
4730 return -EINVAL;
4731 /* force (at least) rates when authorizing */
4732 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4733 !params->supported_rates)
4734 return -EINVAL;
4735 break;
4736 case CFG80211_STA_TDLS_PEER_ACTIVE:
4737 /* reject any changes */
4738 return -EINVAL;
4739 case CFG80211_STA_MESH_PEER_KERNEL:
4740 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4741 return -EINVAL;
4742 break;
4743 case CFG80211_STA_MESH_PEER_USER:
4744 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4745 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4746 return -EINVAL;
4747 break;
4748 }
4749
4750 /*
4751 * Older kernel versions ignored this attribute entirely, so don't
4752 * reject attempts to update it but mark it as unused instead so the
4753 * driver won't look at the data.
4754 */
4755 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4756 statype != CFG80211_STA_TDLS_PEER_SETUP)
4757 params->opmode_notif_used = false;
4758
4759 return 0;
4760 }
4761 EXPORT_SYMBOL(cfg80211_check_station_change);
4762
4763 /*
4764 * Get vlan interface making sure it is running and on the right wiphy.
4765 */
4766 static struct net_device *get_vlan(struct genl_info *info,
4767 struct cfg80211_registered_device *rdev)
4768 {
4769 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4770 struct net_device *v;
4771 int ret;
4772
4773 if (!vlanattr)
4774 return NULL;
4775
4776 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4777 if (!v)
4778 return ERR_PTR(-ENODEV);
4779
4780 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4781 ret = -EINVAL;
4782 goto error;
4783 }
4784
4785 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4786 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4787 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4788 ret = -EINVAL;
4789 goto error;
4790 }
4791
4792 if (!netif_running(v)) {
4793 ret = -ENETDOWN;
4794 goto error;
4795 }
4796
4797 return v;
4798 error:
4799 dev_put(v);
4800 return ERR_PTR(ret);
4801 }
4802
4803 static const struct nla_policy
4804 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4805 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4806 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4807 };
4808
4809 static int nl80211_parse_sta_wme(struct genl_info *info,
4810 struct station_parameters *params)
4811 {
4812 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4813 struct nlattr *nla;
4814 int err;
4815
4816 /* parse WME attributes if present */
4817 if (!info->attrs[NL80211_ATTR_STA_WME])
4818 return 0;
4819
4820 nla = info->attrs[NL80211_ATTR_STA_WME];
4821 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4822 nl80211_sta_wme_policy, info->extack);
4823 if (err)
4824 return err;
4825
4826 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4827 params->uapsd_queues = nla_get_u8(
4828 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4829 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4830 return -EINVAL;
4831
4832 if (tb[NL80211_STA_WME_MAX_SP])
4833 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4834
4835 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4836 return -EINVAL;
4837
4838 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4839
4840 return 0;
4841 }
4842
4843 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4844 struct station_parameters *params)
4845 {
4846 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4847 params->supported_channels =
4848 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4849 params->supported_channels_len =
4850 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4851 /*
4852 * Need to include at least one (first channel, number of
4853 * channels) tuple for each subband, and must have proper
4854 * tuples for the rest of the data as well.
4855 */
4856 if (params->supported_channels_len < 2)
4857 return -EINVAL;
4858 if (params->supported_channels_len % 2)
4859 return -EINVAL;
4860 }
4861
4862 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4863 params->supported_oper_classes =
4864 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4865 params->supported_oper_classes_len =
4866 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4867 /*
4868 * The value of the Length field of the Supported Operating
4869 * Classes element is between 2 and 253.
4870 */
4871 if (params->supported_oper_classes_len < 2 ||
4872 params->supported_oper_classes_len > 253)
4873 return -EINVAL;
4874 }
4875 return 0;
4876 }
4877
4878 static int nl80211_set_station_tdls(struct genl_info *info,
4879 struct station_parameters *params)
4880 {
4881 int err;
4882 /* Dummy STA entry gets updated once the peer capabilities are known */
4883 if (info->attrs[NL80211_ATTR_PEER_AID])
4884 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4885 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4886 params->ht_capa =
4887 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4888 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4889 params->vht_capa =
4890 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4891
4892 err = nl80211_parse_sta_channel_info(info, params);
4893 if (err)
4894 return err;
4895
4896 return nl80211_parse_sta_wme(info, params);
4897 }
4898
4899 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4900 {
4901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4902 struct net_device *dev = info->user_ptr[1];
4903 struct station_parameters params;
4904 u8 *mac_addr;
4905 int err;
4906
4907 memset(&params, 0, sizeof(params));
4908
4909 if (!rdev->ops->change_station)
4910 return -EOPNOTSUPP;
4911
4912 /*
4913 * AID and listen_interval properties can be set only for unassociated
4914 * station. Include these parameters here and will check them in
4915 * cfg80211_check_station_change().
4916 */
4917 if (info->attrs[NL80211_ATTR_STA_AID])
4918 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4919
4920 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4921 params.listen_interval =
4922 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4923 else
4924 params.listen_interval = -1;
4925
4926 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4927 u8 tmp;
4928
4929 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4930 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4931 return -EINVAL;
4932
4933 params.support_p2p_ps = tmp;
4934 } else {
4935 params.support_p2p_ps = -1;
4936 }
4937
4938 if (!info->attrs[NL80211_ATTR_MAC])
4939 return -EINVAL;
4940
4941 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4942
4943 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4944 params.supported_rates =
4945 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4946 params.supported_rates_len =
4947 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4948 }
4949
4950 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4951 params.capability =
4952 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4953 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4954 }
4955
4956 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4957 params.ext_capab =
4958 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4959 params.ext_capab_len =
4960 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4961 }
4962
4963 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4964 return -EINVAL;
4965
4966 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4967 params.plink_action =
4968 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4969 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4970 return -EINVAL;
4971 }
4972
4973 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4974 params.plink_state =
4975 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4976 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4977 return -EINVAL;
4978 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4979 params.peer_aid = nla_get_u16(
4980 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4981 if (params.peer_aid > IEEE80211_MAX_AID)
4982 return -EINVAL;
4983 }
4984 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4985 }
4986
4987 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4988 enum nl80211_mesh_power_mode pm = nla_get_u32(
4989 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4990
4991 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4992 pm > NL80211_MESH_POWER_MAX)
4993 return -EINVAL;
4994
4995 params.local_pm = pm;
4996 }
4997
4998 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4999 params.opmode_notif_used = true;
5000 params.opmode_notif =
5001 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5002 }
5003
5004 /* Include parameters for TDLS peer (will check later) */
5005 err = nl80211_set_station_tdls(info, &params);
5006 if (err)
5007 return err;
5008
5009 params.vlan = get_vlan(info, rdev);
5010 if (IS_ERR(params.vlan))
5011 return PTR_ERR(params.vlan);
5012
5013 switch (dev->ieee80211_ptr->iftype) {
5014 case NL80211_IFTYPE_AP:
5015 case NL80211_IFTYPE_AP_VLAN:
5016 case NL80211_IFTYPE_P2P_GO:
5017 case NL80211_IFTYPE_P2P_CLIENT:
5018 case NL80211_IFTYPE_STATION:
5019 case NL80211_IFTYPE_ADHOC:
5020 case NL80211_IFTYPE_MESH_POINT:
5021 break;
5022 default:
5023 err = -EOPNOTSUPP;
5024 goto out_put_vlan;
5025 }
5026
5027 /* driver will call cfg80211_check_station_change() */
5028 err = rdev_change_station(rdev, dev, mac_addr, &params);
5029
5030 out_put_vlan:
5031 if (params.vlan)
5032 dev_put(params.vlan);
5033
5034 return err;
5035 }
5036
5037 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5038 {
5039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5040 int err;
5041 struct net_device *dev = info->user_ptr[1];
5042 struct station_parameters params;
5043 u8 *mac_addr = NULL;
5044 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5045 BIT(NL80211_STA_FLAG_ASSOCIATED);
5046
5047 memset(&params, 0, sizeof(params));
5048
5049 if (!rdev->ops->add_station)
5050 return -EOPNOTSUPP;
5051
5052 if (!info->attrs[NL80211_ATTR_MAC])
5053 return -EINVAL;
5054
5055 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5056 return -EINVAL;
5057
5058 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5059 return -EINVAL;
5060
5061 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5062 !info->attrs[NL80211_ATTR_PEER_AID])
5063 return -EINVAL;
5064
5065 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5066 params.supported_rates =
5067 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5068 params.supported_rates_len =
5069 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5070 params.listen_interval =
5071 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5072
5073 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5074 u8 tmp;
5075
5076 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5077 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5078 return -EINVAL;
5079
5080 params.support_p2p_ps = tmp;
5081 } else {
5082 /*
5083 * if not specified, assume it's supported for P2P GO interface,
5084 * and is NOT supported for AP interface
5085 */
5086 params.support_p2p_ps =
5087 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5088 }
5089
5090 if (info->attrs[NL80211_ATTR_PEER_AID])
5091 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5092 else
5093 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5094 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5095 return -EINVAL;
5096
5097 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5098 params.capability =
5099 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5100 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5101 }
5102
5103 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5104 params.ext_capab =
5105 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5106 params.ext_capab_len =
5107 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5108 }
5109
5110 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5111 params.ht_capa =
5112 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5113
5114 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5115 params.vht_capa =
5116 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5117
5118 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5119 params.opmode_notif_used = true;
5120 params.opmode_notif =
5121 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5122 }
5123
5124 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5125 params.plink_action =
5126 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5127 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5128 return -EINVAL;
5129 }
5130
5131 err = nl80211_parse_sta_channel_info(info, &params);
5132 if (err)
5133 return err;
5134
5135 err = nl80211_parse_sta_wme(info, &params);
5136 if (err)
5137 return err;
5138
5139 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5140 return -EINVAL;
5141
5142 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5143 * as userspace might just pass through the capabilities from the IEs
5144 * directly, rather than enforcing this restriction and returning an
5145 * error in this case.
5146 */
5147 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5148 params.ht_capa = NULL;
5149 params.vht_capa = NULL;
5150 }
5151
5152 /* When you run into this, adjust the code below for the new flag */
5153 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5154
5155 switch (dev->ieee80211_ptr->iftype) {
5156 case NL80211_IFTYPE_AP:
5157 case NL80211_IFTYPE_AP_VLAN:
5158 case NL80211_IFTYPE_P2P_GO:
5159 /* ignore WME attributes if iface/sta is not capable */
5160 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5161 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5162 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5163
5164 /* TDLS peers cannot be added */
5165 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5166 info->attrs[NL80211_ATTR_PEER_AID])
5167 return -EINVAL;
5168 /* but don't bother the driver with it */
5169 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5170
5171 /* allow authenticated/associated only if driver handles it */
5172 if (!(rdev->wiphy.features &
5173 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5174 params.sta_flags_mask & auth_assoc)
5175 return -EINVAL;
5176
5177 /* Older userspace, or userspace wanting to be compatible with
5178 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5179 * and assoc flags in the mask, but assumes the station will be
5180 * added as associated anyway since this was the required driver
5181 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5182 * introduced.
5183 * In order to not bother drivers with this quirk in the API
5184 * set the flags in both the mask and set for new stations in
5185 * this case.
5186 */
5187 if (!(params.sta_flags_mask & auth_assoc)) {
5188 params.sta_flags_mask |= auth_assoc;
5189 params.sta_flags_set |= auth_assoc;
5190 }
5191
5192 /* must be last in here for error handling */
5193 params.vlan = get_vlan(info, rdev);
5194 if (IS_ERR(params.vlan))
5195 return PTR_ERR(params.vlan);
5196 break;
5197 case NL80211_IFTYPE_MESH_POINT:
5198 /* ignore uAPSD data */
5199 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5200
5201 /* associated is disallowed */
5202 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5203 return -EINVAL;
5204 /* TDLS peers cannot be added */
5205 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5206 info->attrs[NL80211_ATTR_PEER_AID])
5207 return -EINVAL;
5208 break;
5209 case NL80211_IFTYPE_STATION:
5210 case NL80211_IFTYPE_P2P_CLIENT:
5211 /* ignore uAPSD data */
5212 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5213
5214 /* these are disallowed */
5215 if (params.sta_flags_mask &
5216 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5217 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5218 return -EINVAL;
5219 /* Only TDLS peers can be added */
5220 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5221 return -EINVAL;
5222 /* Can only add if TDLS ... */
5223 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5224 return -EOPNOTSUPP;
5225 /* ... with external setup is supported */
5226 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5227 return -EOPNOTSUPP;
5228 /*
5229 * Older wpa_supplicant versions always mark the TDLS peer
5230 * as authorized, but it shouldn't yet be.
5231 */
5232 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5233 break;
5234 default:
5235 return -EOPNOTSUPP;
5236 }
5237
5238 /* be aware of params.vlan when changing code here */
5239
5240 err = rdev_add_station(rdev, dev, mac_addr, &params);
5241
5242 if (params.vlan)
5243 dev_put(params.vlan);
5244 return err;
5245 }
5246
5247 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5248 {
5249 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5250 struct net_device *dev = info->user_ptr[1];
5251 struct station_del_parameters params;
5252
5253 memset(&params, 0, sizeof(params));
5254
5255 if (info->attrs[NL80211_ATTR_MAC])
5256 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5257
5258 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5259 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5260 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5261 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5262 return -EINVAL;
5263
5264 if (!rdev->ops->del_station)
5265 return -EOPNOTSUPP;
5266
5267 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5268 params.subtype =
5269 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5270 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5271 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5272 return -EINVAL;
5273 } else {
5274 /* Default to Deauthentication frame */
5275 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5276 }
5277
5278 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5279 params.reason_code =
5280 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5281 if (params.reason_code == 0)
5282 return -EINVAL; /* 0 is reserved */
5283 } else {
5284 /* Default to reason code 2 */
5285 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5286 }
5287
5288 return rdev_del_station(rdev, dev, &params);
5289 }
5290
5291 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5292 int flags, struct net_device *dev,
5293 u8 *dst, u8 *next_hop,
5294 struct mpath_info *pinfo)
5295 {
5296 void *hdr;
5297 struct nlattr *pinfoattr;
5298
5299 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5300 if (!hdr)
5301 return -1;
5302
5303 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5304 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5305 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5306 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5307 goto nla_put_failure;
5308
5309 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5310 if (!pinfoattr)
5311 goto nla_put_failure;
5312 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5313 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5314 pinfo->frame_qlen))
5315 goto nla_put_failure;
5316 if (((pinfo->filled & MPATH_INFO_SN) &&
5317 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5318 ((pinfo->filled & MPATH_INFO_METRIC) &&
5319 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5320 pinfo->metric)) ||
5321 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5322 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5323 pinfo->exptime)) ||
5324 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5325 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5326 pinfo->flags)) ||
5327 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5328 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5329 pinfo->discovery_timeout)) ||
5330 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5331 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5332 pinfo->discovery_retries)))
5333 goto nla_put_failure;
5334
5335 nla_nest_end(msg, pinfoattr);
5336
5337 genlmsg_end(msg, hdr);
5338 return 0;
5339
5340 nla_put_failure:
5341 genlmsg_cancel(msg, hdr);
5342 return -EMSGSIZE;
5343 }
5344
5345 static int nl80211_dump_mpath(struct sk_buff *skb,
5346 struct netlink_callback *cb)
5347 {
5348 struct mpath_info pinfo;
5349 struct cfg80211_registered_device *rdev;
5350 struct wireless_dev *wdev;
5351 u8 dst[ETH_ALEN];
5352 u8 next_hop[ETH_ALEN];
5353 int path_idx = cb->args[2];
5354 int err;
5355
5356 rtnl_lock();
5357 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5358 if (err)
5359 goto out_err;
5360
5361 if (!rdev->ops->dump_mpath) {
5362 err = -EOPNOTSUPP;
5363 goto out_err;
5364 }
5365
5366 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5367 err = -EOPNOTSUPP;
5368 goto out_err;
5369 }
5370
5371 while (1) {
5372 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5373 next_hop, &pinfo);
5374 if (err == -ENOENT)
5375 break;
5376 if (err)
5377 goto out_err;
5378
5379 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5380 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5381 wdev->netdev, dst, next_hop,
5382 &pinfo) < 0)
5383 goto out;
5384
5385 path_idx++;
5386 }
5387
5388 out:
5389 cb->args[2] = path_idx;
5390 err = skb->len;
5391 out_err:
5392 rtnl_unlock();
5393 return err;
5394 }
5395
5396 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5397 {
5398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5399 int err;
5400 struct net_device *dev = info->user_ptr[1];
5401 struct mpath_info pinfo;
5402 struct sk_buff *msg;
5403 u8 *dst = NULL;
5404 u8 next_hop[ETH_ALEN];
5405
5406 memset(&pinfo, 0, sizeof(pinfo));
5407
5408 if (!info->attrs[NL80211_ATTR_MAC])
5409 return -EINVAL;
5410
5411 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5412
5413 if (!rdev->ops->get_mpath)
5414 return -EOPNOTSUPP;
5415
5416 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5417 return -EOPNOTSUPP;
5418
5419 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5420 if (err)
5421 return err;
5422
5423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5424 if (!msg)
5425 return -ENOMEM;
5426
5427 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5428 dev, dst, next_hop, &pinfo) < 0) {
5429 nlmsg_free(msg);
5430 return -ENOBUFS;
5431 }
5432
5433 return genlmsg_reply(msg, info);
5434 }
5435
5436 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5437 {
5438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5439 struct net_device *dev = info->user_ptr[1];
5440 u8 *dst = NULL;
5441 u8 *next_hop = NULL;
5442
5443 if (!info->attrs[NL80211_ATTR_MAC])
5444 return -EINVAL;
5445
5446 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5447 return -EINVAL;
5448
5449 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5450 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5451
5452 if (!rdev->ops->change_mpath)
5453 return -EOPNOTSUPP;
5454
5455 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5456 return -EOPNOTSUPP;
5457
5458 return rdev_change_mpath(rdev, dev, dst, next_hop);
5459 }
5460
5461 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5462 {
5463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5464 struct net_device *dev = info->user_ptr[1];
5465 u8 *dst = NULL;
5466 u8 *next_hop = NULL;
5467
5468 if (!info->attrs[NL80211_ATTR_MAC])
5469 return -EINVAL;
5470
5471 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5472 return -EINVAL;
5473
5474 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5475 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5476
5477 if (!rdev->ops->add_mpath)
5478 return -EOPNOTSUPP;
5479
5480 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5481 return -EOPNOTSUPP;
5482
5483 return rdev_add_mpath(rdev, dev, dst, next_hop);
5484 }
5485
5486 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5487 {
5488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5489 struct net_device *dev = info->user_ptr[1];
5490 u8 *dst = NULL;
5491
5492 if (info->attrs[NL80211_ATTR_MAC])
5493 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5494
5495 if (!rdev->ops->del_mpath)
5496 return -EOPNOTSUPP;
5497
5498 return rdev_del_mpath(rdev, dev, dst);
5499 }
5500
5501 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5502 {
5503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5504 int err;
5505 struct net_device *dev = info->user_ptr[1];
5506 struct mpath_info pinfo;
5507 struct sk_buff *msg;
5508 u8 *dst = NULL;
5509 u8 mpp[ETH_ALEN];
5510
5511 memset(&pinfo, 0, sizeof(pinfo));
5512
5513 if (!info->attrs[NL80211_ATTR_MAC])
5514 return -EINVAL;
5515
5516 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5517
5518 if (!rdev->ops->get_mpp)
5519 return -EOPNOTSUPP;
5520
5521 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5522 return -EOPNOTSUPP;
5523
5524 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5525 if (err)
5526 return err;
5527
5528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5529 if (!msg)
5530 return -ENOMEM;
5531
5532 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5533 dev, dst, mpp, &pinfo) < 0) {
5534 nlmsg_free(msg);
5535 return -ENOBUFS;
5536 }
5537
5538 return genlmsg_reply(msg, info);
5539 }
5540
5541 static int nl80211_dump_mpp(struct sk_buff *skb,
5542 struct netlink_callback *cb)
5543 {
5544 struct mpath_info pinfo;
5545 struct cfg80211_registered_device *rdev;
5546 struct wireless_dev *wdev;
5547 u8 dst[ETH_ALEN];
5548 u8 mpp[ETH_ALEN];
5549 int path_idx = cb->args[2];
5550 int err;
5551
5552 rtnl_lock();
5553 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5554 if (err)
5555 goto out_err;
5556
5557 if (!rdev->ops->dump_mpp) {
5558 err = -EOPNOTSUPP;
5559 goto out_err;
5560 }
5561
5562 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5563 err = -EOPNOTSUPP;
5564 goto out_err;
5565 }
5566
5567 while (1) {
5568 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5569 mpp, &pinfo);
5570 if (err == -ENOENT)
5571 break;
5572 if (err)
5573 goto out_err;
5574
5575 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5576 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5577 wdev->netdev, dst, mpp,
5578 &pinfo) < 0)
5579 goto out;
5580
5581 path_idx++;
5582 }
5583
5584 out:
5585 cb->args[2] = path_idx;
5586 err = skb->len;
5587 out_err:
5588 rtnl_unlock();
5589 return err;
5590 }
5591
5592 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5593 {
5594 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5595 struct net_device *dev = info->user_ptr[1];
5596 struct wireless_dev *wdev = dev->ieee80211_ptr;
5597 struct bss_parameters params;
5598 int err;
5599
5600 memset(&params, 0, sizeof(params));
5601 /* default to not changing parameters */
5602 params.use_cts_prot = -1;
5603 params.use_short_preamble = -1;
5604 params.use_short_slot_time = -1;
5605 params.ap_isolate = -1;
5606 params.ht_opmode = -1;
5607 params.p2p_ctwindow = -1;
5608 params.p2p_opp_ps = -1;
5609
5610 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5611 params.use_cts_prot =
5612 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5613 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5614 params.use_short_preamble =
5615 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5616 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5617 params.use_short_slot_time =
5618 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5619 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5620 params.basic_rates =
5621 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5622 params.basic_rates_len =
5623 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5624 }
5625 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5626 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5627 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5628 params.ht_opmode =
5629 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5630
5631 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5632 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5633 return -EINVAL;
5634 params.p2p_ctwindow =
5635 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5636 if (params.p2p_ctwindow < 0)
5637 return -EINVAL;
5638 if (params.p2p_ctwindow != 0 &&
5639 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5640 return -EINVAL;
5641 }
5642
5643 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5644 u8 tmp;
5645
5646 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5647 return -EINVAL;
5648 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5649 if (tmp > 1)
5650 return -EINVAL;
5651 params.p2p_opp_ps = tmp;
5652 if (params.p2p_opp_ps &&
5653 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5654 return -EINVAL;
5655 }
5656
5657 if (!rdev->ops->change_bss)
5658 return -EOPNOTSUPP;
5659
5660 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5661 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5662 return -EOPNOTSUPP;
5663
5664 wdev_lock(wdev);
5665 err = rdev_change_bss(rdev, dev, &params);
5666 wdev_unlock(wdev);
5667
5668 return err;
5669 }
5670
5671 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5672 {
5673 char *data = NULL;
5674 bool is_indoor;
5675 enum nl80211_user_reg_hint_type user_reg_hint_type;
5676 u32 owner_nlportid;
5677
5678 /*
5679 * You should only get this when cfg80211 hasn't yet initialized
5680 * completely when built-in to the kernel right between the time
5681 * window between nl80211_init() and regulatory_init(), if that is
5682 * even possible.
5683 */
5684 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5685 return -EINPROGRESS;
5686
5687 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5688 user_reg_hint_type =
5689 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5690 else
5691 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5692
5693 switch (user_reg_hint_type) {
5694 case NL80211_USER_REG_HINT_USER:
5695 case NL80211_USER_REG_HINT_CELL_BASE:
5696 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5697 return -EINVAL;
5698
5699 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5700 return regulatory_hint_user(data, user_reg_hint_type);
5701 case NL80211_USER_REG_HINT_INDOOR:
5702 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5703 owner_nlportid = info->snd_portid;
5704 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5705 } else {
5706 owner_nlportid = 0;
5707 is_indoor = true;
5708 }
5709
5710 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5711 default:
5712 return -EINVAL;
5713 }
5714 }
5715
5716 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5717 {
5718 return reg_reload_regdb();
5719 }
5720
5721 static int nl80211_get_mesh_config(struct sk_buff *skb,
5722 struct genl_info *info)
5723 {
5724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5725 struct net_device *dev = info->user_ptr[1];
5726 struct wireless_dev *wdev = dev->ieee80211_ptr;
5727 struct mesh_config cur_params;
5728 int err = 0;
5729 void *hdr;
5730 struct nlattr *pinfoattr;
5731 struct sk_buff *msg;
5732
5733 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5734 return -EOPNOTSUPP;
5735
5736 if (!rdev->ops->get_mesh_config)
5737 return -EOPNOTSUPP;
5738
5739 wdev_lock(wdev);
5740 /* If not connected, get default parameters */
5741 if (!wdev->mesh_id_len)
5742 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5743 else
5744 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5745 wdev_unlock(wdev);
5746
5747 if (err)
5748 return err;
5749
5750 /* Draw up a netlink message to send back */
5751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5752 if (!msg)
5753 return -ENOMEM;
5754 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5755 NL80211_CMD_GET_MESH_CONFIG);
5756 if (!hdr)
5757 goto out;
5758 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5759 if (!pinfoattr)
5760 goto nla_put_failure;
5761 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5762 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5763 cur_params.dot11MeshRetryTimeout) ||
5764 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5765 cur_params.dot11MeshConfirmTimeout) ||
5766 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5767 cur_params.dot11MeshHoldingTimeout) ||
5768 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5769 cur_params.dot11MeshMaxPeerLinks) ||
5770 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5771 cur_params.dot11MeshMaxRetries) ||
5772 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5773 cur_params.dot11MeshTTL) ||
5774 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5775 cur_params.element_ttl) ||
5776 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5777 cur_params.auto_open_plinks) ||
5778 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5779 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5780 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5781 cur_params.dot11MeshHWMPmaxPREQretries) ||
5782 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5783 cur_params.path_refresh_time) ||
5784 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5785 cur_params.min_discovery_timeout) ||
5786 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5787 cur_params.dot11MeshHWMPactivePathTimeout) ||
5788 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5789 cur_params.dot11MeshHWMPpreqMinInterval) ||
5790 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5791 cur_params.dot11MeshHWMPperrMinInterval) ||
5792 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5793 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5794 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5795 cur_params.dot11MeshHWMPRootMode) ||
5796 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5797 cur_params.dot11MeshHWMPRannInterval) ||
5798 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5799 cur_params.dot11MeshGateAnnouncementProtocol) ||
5800 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5801 cur_params.dot11MeshForwarding) ||
5802 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5803 cur_params.rssi_threshold) ||
5804 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5805 cur_params.ht_opmode) ||
5806 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5807 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5808 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5809 cur_params.dot11MeshHWMProotInterval) ||
5810 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5811 cur_params.dot11MeshHWMPconfirmationInterval) ||
5812 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5813 cur_params.power_mode) ||
5814 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5815 cur_params.dot11MeshAwakeWindowDuration) ||
5816 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5817 cur_params.plink_timeout))
5818 goto nla_put_failure;
5819 nla_nest_end(msg, pinfoattr);
5820 genlmsg_end(msg, hdr);
5821 return genlmsg_reply(msg, info);
5822
5823 nla_put_failure:
5824 genlmsg_cancel(msg, hdr);
5825 out:
5826 nlmsg_free(msg);
5827 return -ENOBUFS;
5828 }
5829
5830 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5831 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5832 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5833 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5834 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5835 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5836 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5837 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5838 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5839 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5840 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5841 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5842 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5843 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5844 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5845 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5846 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5847 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5848 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5849 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5850 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5851 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5852 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5853 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5854 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5855 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5856 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5857 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5858 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5859 };
5860
5861 static const struct nla_policy
5862 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5863 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5864 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5865 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5866 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5867 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5868 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5869 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5870 .len = IEEE80211_MAX_DATA_LEN },
5871 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5872 };
5873
5874 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5875 {
5876 u8 val = nla_get_u8(nla);
5877 if (val < min || val > max)
5878 return -EINVAL;
5879 *out = val;
5880 return 0;
5881 }
5882
5883 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5884 {
5885 u8 val = nla_get_u8(nla);
5886 if (val < min || val > max)
5887 return -EINVAL;
5888 *out = val;
5889 return 0;
5890 }
5891
5892 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5893 {
5894 u16 val = nla_get_u16(nla);
5895 if (val < min || val > max)
5896 return -EINVAL;
5897 *out = val;
5898 return 0;
5899 }
5900
5901 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5902 {
5903 u32 val = nla_get_u32(nla);
5904 if (val < min || val > max)
5905 return -EINVAL;
5906 *out = val;
5907 return 0;
5908 }
5909
5910 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5911 {
5912 s32 val = nla_get_s32(nla);
5913 if (val < min || val > max)
5914 return -EINVAL;
5915 *out = val;
5916 return 0;
5917 }
5918
5919 static int nl80211_check_power_mode(const struct nlattr *nla,
5920 enum nl80211_mesh_power_mode min,
5921 enum nl80211_mesh_power_mode max,
5922 enum nl80211_mesh_power_mode *out)
5923 {
5924 u32 val = nla_get_u32(nla);
5925 if (val < min || val > max)
5926 return -EINVAL;
5927 *out = val;
5928 return 0;
5929 }
5930
5931 static int nl80211_parse_mesh_config(struct genl_info *info,
5932 struct mesh_config *cfg,
5933 u32 *mask_out)
5934 {
5935 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5936 u32 mask = 0;
5937 u16 ht_opmode;
5938
5939 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5940 do { \
5941 if (tb[attr]) { \
5942 if (fn(tb[attr], min, max, &cfg->param)) \
5943 return -EINVAL; \
5944 mask |= (1 << (attr - 1)); \
5945 } \
5946 } while (0)
5947
5948 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5949 return -EINVAL;
5950 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5951 info->attrs[NL80211_ATTR_MESH_CONFIG],
5952 nl80211_meshconf_params_policy, info->extack))
5953 return -EINVAL;
5954
5955 /* This makes sure that there aren't more than 32 mesh config
5956 * parameters (otherwise our bitfield scheme would not work.) */
5957 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5958
5959 /* Fill in the params struct */
5960 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5961 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5962 nl80211_check_u16);
5963 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5964 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5965 nl80211_check_u16);
5966 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5967 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5968 nl80211_check_u16);
5969 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5970 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5971 nl80211_check_u16);
5972 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5973 mask, NL80211_MESHCONF_MAX_RETRIES,
5974 nl80211_check_u8);
5975 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5976 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5978 mask, NL80211_MESHCONF_ELEMENT_TTL,
5979 nl80211_check_u8);
5980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5981 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5982 nl80211_check_bool);
5983 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5984 1, 255, mask,
5985 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5986 nl80211_check_u32);
5987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5988 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5989 nl80211_check_u8);
5990 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5991 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5992 nl80211_check_u32);
5993 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5994 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5995 nl80211_check_u16);
5996 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5997 1, 65535, mask,
5998 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5999 nl80211_check_u32);
6000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6001 1, 65535, mask,
6002 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6003 nl80211_check_u16);
6004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6005 1, 65535, mask,
6006 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6007 nl80211_check_u16);
6008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6009 dot11MeshHWMPnetDiameterTraversalTime,
6010 1, 65535, mask,
6011 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6012 nl80211_check_u16);
6013 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6014 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6015 nl80211_check_u8);
6016 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6017 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6018 nl80211_check_u16);
6019 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6020 dot11MeshGateAnnouncementProtocol, 0, 1,
6021 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6022 nl80211_check_bool);
6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6024 mask, NL80211_MESHCONF_FORWARDING,
6025 nl80211_check_bool);
6026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6027 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6028 nl80211_check_s32);
6029 /*
6030 * Check HT operation mode based on
6031 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6032 */
6033 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6034 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6035
6036 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6037 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6038 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6039 return -EINVAL;
6040
6041 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6042 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6043 return -EINVAL;
6044
6045 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6046 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6047 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6048 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6049 return -EINVAL;
6050 break;
6051 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6052 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6053 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6054 return -EINVAL;
6055 break;
6056 }
6057 cfg->ht_opmode = ht_opmode;
6058 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6059 }
6060 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6061 1, 65535, mask,
6062 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6063 nl80211_check_u32);
6064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6065 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6066 nl80211_check_u16);
6067 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6068 dot11MeshHWMPconfirmationInterval,
6069 1, 65535, mask,
6070 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6071 nl80211_check_u16);
6072 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6073 NL80211_MESH_POWER_ACTIVE,
6074 NL80211_MESH_POWER_MAX,
6075 mask, NL80211_MESHCONF_POWER_MODE,
6076 nl80211_check_power_mode);
6077 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6078 0, 65535, mask,
6079 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6080 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6081 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6082 nl80211_check_u32);
6083 if (mask_out)
6084 *mask_out = mask;
6085
6086 return 0;
6087
6088 #undef FILL_IN_MESH_PARAM_IF_SET
6089 }
6090
6091 static int nl80211_parse_mesh_setup(struct genl_info *info,
6092 struct mesh_setup *setup)
6093 {
6094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6095 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6096
6097 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6098 return -EINVAL;
6099 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6100 info->attrs[NL80211_ATTR_MESH_SETUP],
6101 nl80211_mesh_setup_params_policy, info->extack))
6102 return -EINVAL;
6103
6104 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6105 setup->sync_method =
6106 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6107 IEEE80211_SYNC_METHOD_VENDOR :
6108 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6109
6110 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6111 setup->path_sel_proto =
6112 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6113 IEEE80211_PATH_PROTOCOL_VENDOR :
6114 IEEE80211_PATH_PROTOCOL_HWMP;
6115
6116 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6117 setup->path_metric =
6118 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6119 IEEE80211_PATH_METRIC_VENDOR :
6120 IEEE80211_PATH_METRIC_AIRTIME;
6121
6122 if (tb[NL80211_MESH_SETUP_IE]) {
6123 struct nlattr *ieattr =
6124 tb[NL80211_MESH_SETUP_IE];
6125 if (!is_valid_ie_attr(ieattr))
6126 return -EINVAL;
6127 setup->ie = nla_data(ieattr);
6128 setup->ie_len = nla_len(ieattr);
6129 }
6130 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6131 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6132 return -EINVAL;
6133 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6134 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6135 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6136 if (setup->is_secure)
6137 setup->user_mpm = true;
6138
6139 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6140 if (!setup->user_mpm)
6141 return -EINVAL;
6142 setup->auth_id =
6143 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6144 }
6145
6146 return 0;
6147 }
6148
6149 static int nl80211_update_mesh_config(struct sk_buff *skb,
6150 struct genl_info *info)
6151 {
6152 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6153 struct net_device *dev = info->user_ptr[1];
6154 struct wireless_dev *wdev = dev->ieee80211_ptr;
6155 struct mesh_config cfg;
6156 u32 mask;
6157 int err;
6158
6159 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6160 return -EOPNOTSUPP;
6161
6162 if (!rdev->ops->update_mesh_config)
6163 return -EOPNOTSUPP;
6164
6165 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6166 if (err)
6167 return err;
6168
6169 wdev_lock(wdev);
6170 if (!wdev->mesh_id_len)
6171 err = -ENOLINK;
6172
6173 if (!err)
6174 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6175
6176 wdev_unlock(wdev);
6177
6178 return err;
6179 }
6180
6181 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6182 struct sk_buff *msg)
6183 {
6184 struct nlattr *nl_reg_rules;
6185 unsigned int i;
6186
6187 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6188 (regdom->dfs_region &&
6189 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6190 goto nla_put_failure;
6191
6192 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6193 if (!nl_reg_rules)
6194 goto nla_put_failure;
6195
6196 for (i = 0; i < regdom->n_reg_rules; i++) {
6197 struct nlattr *nl_reg_rule;
6198 const struct ieee80211_reg_rule *reg_rule;
6199 const struct ieee80211_freq_range *freq_range;
6200 const struct ieee80211_power_rule *power_rule;
6201 unsigned int max_bandwidth_khz;
6202
6203 reg_rule = &regdom->reg_rules[i];
6204 freq_range = &reg_rule->freq_range;
6205 power_rule = &reg_rule->power_rule;
6206
6207 nl_reg_rule = nla_nest_start(msg, i);
6208 if (!nl_reg_rule)
6209 goto nla_put_failure;
6210
6211 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6212 if (!max_bandwidth_khz)
6213 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6214 reg_rule);
6215
6216 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6217 reg_rule->flags) ||
6218 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6219 freq_range->start_freq_khz) ||
6220 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6221 freq_range->end_freq_khz) ||
6222 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6223 max_bandwidth_khz) ||
6224 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6225 power_rule->max_antenna_gain) ||
6226 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6227 power_rule->max_eirp) ||
6228 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6229 reg_rule->dfs_cac_ms))
6230 goto nla_put_failure;
6231
6232 nla_nest_end(msg, nl_reg_rule);
6233 }
6234
6235 nla_nest_end(msg, nl_reg_rules);
6236 return 0;
6237
6238 nla_put_failure:
6239 return -EMSGSIZE;
6240 }
6241
6242 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6243 {
6244 const struct ieee80211_regdomain *regdom = NULL;
6245 struct cfg80211_registered_device *rdev;
6246 struct wiphy *wiphy = NULL;
6247 struct sk_buff *msg;
6248 void *hdr;
6249
6250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6251 if (!msg)
6252 return -ENOBUFS;
6253
6254 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6255 NL80211_CMD_GET_REG);
6256 if (!hdr)
6257 goto put_failure;
6258
6259 if (info->attrs[NL80211_ATTR_WIPHY]) {
6260 bool self_managed;
6261
6262 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6263 if (IS_ERR(rdev)) {
6264 nlmsg_free(msg);
6265 return PTR_ERR(rdev);
6266 }
6267
6268 wiphy = &rdev->wiphy;
6269 self_managed = wiphy->regulatory_flags &
6270 REGULATORY_WIPHY_SELF_MANAGED;
6271 regdom = get_wiphy_regdom(wiphy);
6272
6273 /* a self-managed-reg device must have a private regdom */
6274 if (WARN_ON(!regdom && self_managed)) {
6275 nlmsg_free(msg);
6276 return -EINVAL;
6277 }
6278
6279 if (regdom &&
6280 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6281 goto nla_put_failure;
6282 }
6283
6284 if (!wiphy && reg_last_request_cell_base() &&
6285 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6286 NL80211_USER_REG_HINT_CELL_BASE))
6287 goto nla_put_failure;
6288
6289 rcu_read_lock();
6290
6291 if (!regdom)
6292 regdom = rcu_dereference(cfg80211_regdomain);
6293
6294 if (nl80211_put_regdom(regdom, msg))
6295 goto nla_put_failure_rcu;
6296
6297 rcu_read_unlock();
6298
6299 genlmsg_end(msg, hdr);
6300 return genlmsg_reply(msg, info);
6301
6302 nla_put_failure_rcu:
6303 rcu_read_unlock();
6304 nla_put_failure:
6305 genlmsg_cancel(msg, hdr);
6306 put_failure:
6307 nlmsg_free(msg);
6308 return -EMSGSIZE;
6309 }
6310
6311 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6312 u32 seq, int flags, struct wiphy *wiphy,
6313 const struct ieee80211_regdomain *regdom)
6314 {
6315 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6316 NL80211_CMD_GET_REG);
6317
6318 if (!hdr)
6319 return -1;
6320
6321 genl_dump_check_consistent(cb, hdr);
6322
6323 if (nl80211_put_regdom(regdom, msg))
6324 goto nla_put_failure;
6325
6326 if (!wiphy && reg_last_request_cell_base() &&
6327 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6328 NL80211_USER_REG_HINT_CELL_BASE))
6329 goto nla_put_failure;
6330
6331 if (wiphy &&
6332 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6333 goto nla_put_failure;
6334
6335 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6336 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6337 goto nla_put_failure;
6338
6339 genlmsg_end(msg, hdr);
6340 return 0;
6341
6342 nla_put_failure:
6343 genlmsg_cancel(msg, hdr);
6344 return -EMSGSIZE;
6345 }
6346
6347 static int nl80211_get_reg_dump(struct sk_buff *skb,
6348 struct netlink_callback *cb)
6349 {
6350 const struct ieee80211_regdomain *regdom = NULL;
6351 struct cfg80211_registered_device *rdev;
6352 int err, reg_idx, start = cb->args[2];
6353
6354 rtnl_lock();
6355
6356 if (cfg80211_regdomain && start == 0) {
6357 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6358 NLM_F_MULTI, NULL,
6359 rtnl_dereference(cfg80211_regdomain));
6360 if (err < 0)
6361 goto out_err;
6362 }
6363
6364 /* the global regdom is idx 0 */
6365 reg_idx = 1;
6366 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6367 regdom = get_wiphy_regdom(&rdev->wiphy);
6368 if (!regdom)
6369 continue;
6370
6371 if (++reg_idx <= start)
6372 continue;
6373
6374 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6375 NLM_F_MULTI, &rdev->wiphy, regdom);
6376 if (err < 0) {
6377 reg_idx--;
6378 break;
6379 }
6380 }
6381
6382 cb->args[2] = reg_idx;
6383 err = skb->len;
6384 out_err:
6385 rtnl_unlock();
6386 return err;
6387 }
6388
6389 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6390 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6391 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6392 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6393 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6394 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6395 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6396 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6397 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6398 };
6399
6400 static int parse_reg_rule(struct nlattr *tb[],
6401 struct ieee80211_reg_rule *reg_rule)
6402 {
6403 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6404 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6405
6406 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6407 return -EINVAL;
6408 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6409 return -EINVAL;
6410 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6411 return -EINVAL;
6412 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6413 return -EINVAL;
6414 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6415 return -EINVAL;
6416
6417 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6418
6419 freq_range->start_freq_khz =
6420 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6421 freq_range->end_freq_khz =
6422 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6423 freq_range->max_bandwidth_khz =
6424 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6425
6426 power_rule->max_eirp =
6427 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6428
6429 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6430 power_rule->max_antenna_gain =
6431 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6432
6433 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6434 reg_rule->dfs_cac_ms =
6435 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6436
6437 return 0;
6438 }
6439
6440 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6441 {
6442 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6443 struct nlattr *nl_reg_rule;
6444 char *alpha2;
6445 int rem_reg_rules, r;
6446 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6447 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6448 struct ieee80211_regdomain *rd;
6449
6450 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6451 return -EINVAL;
6452
6453 if (!info->attrs[NL80211_ATTR_REG_RULES])
6454 return -EINVAL;
6455
6456 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6457
6458 if (info->attrs[NL80211_ATTR_DFS_REGION])
6459 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6460
6461 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6462 rem_reg_rules) {
6463 num_rules++;
6464 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6465 return -EINVAL;
6466 }
6467
6468 if (!reg_is_valid_request(alpha2))
6469 return -EINVAL;
6470
6471 size_of_regd = sizeof(struct ieee80211_regdomain) +
6472 num_rules * sizeof(struct ieee80211_reg_rule);
6473
6474 rd = kzalloc(size_of_regd, GFP_KERNEL);
6475 if (!rd)
6476 return -ENOMEM;
6477
6478 rd->n_reg_rules = num_rules;
6479 rd->alpha2[0] = alpha2[0];
6480 rd->alpha2[1] = alpha2[1];
6481
6482 /*
6483 * Disable DFS master mode if the DFS region was
6484 * not supported or known on this kernel.
6485 */
6486 if (reg_supported_dfs_region(dfs_region))
6487 rd->dfs_region = dfs_region;
6488
6489 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6490 rem_reg_rules) {
6491 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6492 nl_reg_rule, reg_rule_policy,
6493 info->extack);
6494 if (r)
6495 goto bad_reg;
6496 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6497 if (r)
6498 goto bad_reg;
6499
6500 rule_idx++;
6501
6502 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6503 r = -EINVAL;
6504 goto bad_reg;
6505 }
6506 }
6507
6508 /* set_regdom takes ownership of rd */
6509 return set_regdom(rd, REGD_SOURCE_CRDA);
6510 bad_reg:
6511 kfree(rd);
6512 return r;
6513 }
6514 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6515
6516 static int validate_scan_freqs(struct nlattr *freqs)
6517 {
6518 struct nlattr *attr1, *attr2;
6519 int n_channels = 0, tmp1, tmp2;
6520
6521 nla_for_each_nested(attr1, freqs, tmp1)
6522 if (nla_len(attr1) != sizeof(u32))
6523 return 0;
6524
6525 nla_for_each_nested(attr1, freqs, tmp1) {
6526 n_channels++;
6527 /*
6528 * Some hardware has a limited channel list for
6529 * scanning, and it is pretty much nonsensical
6530 * to scan for a channel twice, so disallow that
6531 * and don't require drivers to check that the
6532 * channel list they get isn't longer than what
6533 * they can scan, as long as they can scan all
6534 * the channels they registered at once.
6535 */
6536 nla_for_each_nested(attr2, freqs, tmp2)
6537 if (attr1 != attr2 &&
6538 nla_get_u32(attr1) == nla_get_u32(attr2))
6539 return 0;
6540 }
6541
6542 return n_channels;
6543 }
6544
6545 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6546 {
6547 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6548 }
6549
6550 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6551 struct cfg80211_bss_selection *bss_select)
6552 {
6553 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6554 struct nlattr *nest;
6555 int err;
6556 bool found = false;
6557 int i;
6558
6559 /* only process one nested attribute */
6560 nest = nla_data(nla);
6561 if (!nla_ok(nest, nla_len(nest)))
6562 return -EINVAL;
6563
6564 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6565 nl80211_bss_select_policy, NULL);
6566 if (err)
6567 return err;
6568
6569 /* only one attribute may be given */
6570 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6571 if (attr[i]) {
6572 if (found)
6573 return -EINVAL;
6574 found = true;
6575 }
6576 }
6577
6578 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6579
6580 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6581 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6582
6583 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6584 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6585 bss_select->param.band_pref =
6586 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6587 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6588 return -EINVAL;
6589 }
6590
6591 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6592 struct nl80211_bss_select_rssi_adjust *adj_param;
6593
6594 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6595 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6596 bss_select->param.adjust.band = adj_param->band;
6597 bss_select->param.adjust.delta = adj_param->delta;
6598 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6599 return -EINVAL;
6600 }
6601
6602 /* user-space did not provide behaviour attribute */
6603 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6604 return -EINVAL;
6605
6606 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6607 return -EINVAL;
6608
6609 return 0;
6610 }
6611
6612 static int nl80211_parse_random_mac(struct nlattr **attrs,
6613 u8 *mac_addr, u8 *mac_addr_mask)
6614 {
6615 int i;
6616
6617 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6618 eth_zero_addr(mac_addr);
6619 eth_zero_addr(mac_addr_mask);
6620 mac_addr[0] = 0x2;
6621 mac_addr_mask[0] = 0x3;
6622
6623 return 0;
6624 }
6625
6626 /* need both or none */
6627 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6628 return -EINVAL;
6629
6630 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6631 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6632
6633 /* don't allow or configure an mcast address */
6634 if (!is_multicast_ether_addr(mac_addr_mask) ||
6635 is_multicast_ether_addr(mac_addr))
6636 return -EINVAL;
6637
6638 /*
6639 * allow users to pass a MAC address that has bits set outside
6640 * of the mask, but don't bother drivers with having to deal
6641 * with such bits
6642 */
6643 for (i = 0; i < ETH_ALEN; i++)
6644 mac_addr[i] &= mac_addr_mask[i];
6645
6646 return 0;
6647 }
6648
6649 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6650 {
6651 ASSERT_WDEV_LOCK(wdev);
6652
6653 if (!cfg80211_beaconing_iface_active(wdev))
6654 return true;
6655
6656 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6657 return true;
6658
6659 return regulatory_pre_cac_allowed(wdev->wiphy);
6660 }
6661
6662 static int
6663 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6664 void *request, struct nlattr **attrs,
6665 bool is_sched_scan)
6666 {
6667 u8 *mac_addr, *mac_addr_mask;
6668 u32 *flags;
6669 enum nl80211_feature_flags randomness_flag;
6670
6671 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6672 return 0;
6673
6674 if (is_sched_scan) {
6675 struct cfg80211_sched_scan_request *req = request;
6676
6677 randomness_flag = wdev ?
6678 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6679 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6680 flags = &req->flags;
6681 mac_addr = req->mac_addr;
6682 mac_addr_mask = req->mac_addr_mask;
6683 } else {
6684 struct cfg80211_scan_request *req = request;
6685
6686 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6687 flags = &req->flags;
6688 mac_addr = req->mac_addr;
6689 mac_addr_mask = req->mac_addr_mask;
6690 }
6691
6692 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6693
6694 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6695 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6696 return -EOPNOTSUPP;
6697
6698 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6699 int err;
6700
6701 if (!(wiphy->features & randomness_flag) ||
6702 (wdev && wdev->current_bss))
6703 return -EOPNOTSUPP;
6704
6705 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6706 if (err)
6707 return err;
6708 }
6709
6710 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6711 !wiphy_ext_feature_isset(wiphy,
6712 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6713 return -EOPNOTSUPP;
6714
6715 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6716 !wiphy_ext_feature_isset(wiphy,
6717 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6718 return -EOPNOTSUPP;
6719
6720 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6721 !wiphy_ext_feature_isset(wiphy,
6722 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6723 return -EOPNOTSUPP;
6724
6725 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6726 !wiphy_ext_feature_isset(wiphy,
6727 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6728 return -EOPNOTSUPP;
6729
6730 return 0;
6731 }
6732
6733 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6734 {
6735 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6736 struct wireless_dev *wdev = info->user_ptr[1];
6737 struct cfg80211_scan_request *request;
6738 struct nlattr *attr;
6739 struct wiphy *wiphy;
6740 int err, tmp, n_ssids = 0, n_channels, i;
6741 size_t ie_len;
6742
6743 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6744 return -EINVAL;
6745
6746 wiphy = &rdev->wiphy;
6747
6748 if (wdev->iftype == NL80211_IFTYPE_NAN)
6749 return -EOPNOTSUPP;
6750
6751 if (!rdev->ops->scan)
6752 return -EOPNOTSUPP;
6753
6754 if (rdev->scan_req || rdev->scan_msg) {
6755 err = -EBUSY;
6756 goto unlock;
6757 }
6758
6759 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6760 n_channels = validate_scan_freqs(
6761 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6762 if (!n_channels) {
6763 err = -EINVAL;
6764 goto unlock;
6765 }
6766 } else {
6767 n_channels = ieee80211_get_num_supported_channels(wiphy);
6768 }
6769
6770 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6771 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6772 n_ssids++;
6773
6774 if (n_ssids > wiphy->max_scan_ssids) {
6775 err = -EINVAL;
6776 goto unlock;
6777 }
6778
6779 if (info->attrs[NL80211_ATTR_IE])
6780 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6781 else
6782 ie_len = 0;
6783
6784 if (ie_len > wiphy->max_scan_ie_len) {
6785 err = -EINVAL;
6786 goto unlock;
6787 }
6788
6789 request = kzalloc(sizeof(*request)
6790 + sizeof(*request->ssids) * n_ssids
6791 + sizeof(*request->channels) * n_channels
6792 + ie_len, GFP_KERNEL);
6793 if (!request) {
6794 err = -ENOMEM;
6795 goto unlock;
6796 }
6797
6798 if (n_ssids)
6799 request->ssids = (void *)&request->channels[n_channels];
6800 request->n_ssids = n_ssids;
6801 if (ie_len) {
6802 if (n_ssids)
6803 request->ie = (void *)(request->ssids + n_ssids);
6804 else
6805 request->ie = (void *)(request->channels + n_channels);
6806 }
6807
6808 i = 0;
6809 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6810 /* user specified, bail out if channel not found */
6811 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6812 struct ieee80211_channel *chan;
6813
6814 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6815
6816 if (!chan) {
6817 err = -EINVAL;
6818 goto out_free;
6819 }
6820
6821 /* ignore disabled channels */
6822 if (chan->flags & IEEE80211_CHAN_DISABLED)
6823 continue;
6824
6825 request->channels[i] = chan;
6826 i++;
6827 }
6828 } else {
6829 enum nl80211_band band;
6830
6831 /* all channels */
6832 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6833 int j;
6834
6835 if (!wiphy->bands[band])
6836 continue;
6837 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6838 struct ieee80211_channel *chan;
6839
6840 chan = &wiphy->bands[band]->channels[j];
6841
6842 if (chan->flags & IEEE80211_CHAN_DISABLED)
6843 continue;
6844
6845 request->channels[i] = chan;
6846 i++;
6847 }
6848 }
6849 }
6850
6851 if (!i) {
6852 err = -EINVAL;
6853 goto out_free;
6854 }
6855
6856 request->n_channels = i;
6857
6858 wdev_lock(wdev);
6859 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6860 struct ieee80211_channel *chan;
6861
6862 if (request->n_channels != 1) {
6863 wdev_unlock(wdev);
6864 err = -EBUSY;
6865 goto out_free;
6866 }
6867
6868 chan = request->channels[0];
6869 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6870 wdev_unlock(wdev);
6871 err = -EBUSY;
6872 goto out_free;
6873 }
6874 }
6875 wdev_unlock(wdev);
6876
6877 i = 0;
6878 if (n_ssids) {
6879 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6880 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6881 err = -EINVAL;
6882 goto out_free;
6883 }
6884 request->ssids[i].ssid_len = nla_len(attr);
6885 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6886 i++;
6887 }
6888 }
6889
6890 if (info->attrs[NL80211_ATTR_IE]) {
6891 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6892 memcpy((void *)request->ie,
6893 nla_data(info->attrs[NL80211_ATTR_IE]),
6894 request->ie_len);
6895 }
6896
6897 for (i = 0; i < NUM_NL80211_BANDS; i++)
6898 if (wiphy->bands[i])
6899 request->rates[i] =
6900 (1 << wiphy->bands[i]->n_bitrates) - 1;
6901
6902 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6903 nla_for_each_nested(attr,
6904 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6905 tmp) {
6906 enum nl80211_band band = nla_type(attr);
6907
6908 if (band < 0 || band >= NUM_NL80211_BANDS) {
6909 err = -EINVAL;
6910 goto out_free;
6911 }
6912
6913 if (!wiphy->bands[band])
6914 continue;
6915
6916 err = ieee80211_get_ratemask(wiphy->bands[band],
6917 nla_data(attr),
6918 nla_len(attr),
6919 &request->rates[band]);
6920 if (err)
6921 goto out_free;
6922 }
6923 }
6924
6925 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6926 if (!wiphy_ext_feature_isset(wiphy,
6927 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6928 err = -EOPNOTSUPP;
6929 goto out_free;
6930 }
6931
6932 request->duration =
6933 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6934 request->duration_mandatory =
6935 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6936 }
6937
6938 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6939 false);
6940 if (err)
6941 goto out_free;
6942
6943 request->no_cck =
6944 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6945
6946 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6947 * BSSID to scan for. This was problematic because that same attribute
6948 * was already used for another purpose (local random MAC address). The
6949 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6950 * compatibility with older userspace components, also use the
6951 * NL80211_ATTR_MAC value here if it can be determined to be used for
6952 * the specific BSSID use case instead of the random MAC address
6953 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6954 */
6955 if (info->attrs[NL80211_ATTR_BSSID])
6956 memcpy(request->bssid,
6957 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6958 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6959 info->attrs[NL80211_ATTR_MAC])
6960 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6961 ETH_ALEN);
6962 else
6963 eth_broadcast_addr(request->bssid);
6964
6965 request->wdev = wdev;
6966 request->wiphy = &rdev->wiphy;
6967 request->scan_start = jiffies;
6968
6969 rdev->scan_req = request;
6970 err = rdev_scan(rdev, request);
6971
6972 if (!err) {
6973 nl80211_send_scan_start(rdev, wdev);
6974 if (wdev->netdev)
6975 dev_hold(wdev->netdev);
6976 } else {
6977 out_free:
6978 rdev->scan_req = NULL;
6979 kfree(request);
6980 }
6981
6982 unlock:
6983 return err;
6984 }
6985
6986 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6987 {
6988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6989 struct wireless_dev *wdev = info->user_ptr[1];
6990
6991 if (!rdev->ops->abort_scan)
6992 return -EOPNOTSUPP;
6993
6994 if (rdev->scan_msg)
6995 return 0;
6996
6997 if (!rdev->scan_req)
6998 return -ENOENT;
6999
7000 rdev_abort_scan(rdev, wdev);
7001 return 0;
7002 }
7003
7004 static int
7005 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7006 struct cfg80211_sched_scan_request *request,
7007 struct nlattr **attrs)
7008 {
7009 int tmp, err, i = 0;
7010 struct nlattr *attr;
7011
7012 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7013 u32 interval;
7014
7015 /*
7016 * If scan plans are not specified,
7017 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7018 * case one scan plan will be set with the specified scan
7019 * interval and infinite number of iterations.
7020 */
7021 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7022 if (!interval)
7023 return -EINVAL;
7024
7025 request->scan_plans[0].interval =
7026 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7027 if (!request->scan_plans[0].interval)
7028 return -EINVAL;
7029
7030 if (request->scan_plans[0].interval >
7031 wiphy->max_sched_scan_plan_interval)
7032 request->scan_plans[0].interval =
7033 wiphy->max_sched_scan_plan_interval;
7034
7035 return 0;
7036 }
7037
7038 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7039 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7040
7041 if (WARN_ON(i >= n_plans))
7042 return -EINVAL;
7043
7044 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7045 attr, nl80211_plan_policy, NULL);
7046 if (err)
7047 return err;
7048
7049 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7050 return -EINVAL;
7051
7052 request->scan_plans[i].interval =
7053 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7054 if (!request->scan_plans[i].interval ||
7055 request->scan_plans[i].interval >
7056 wiphy->max_sched_scan_plan_interval)
7057 return -EINVAL;
7058
7059 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7060 request->scan_plans[i].iterations =
7061 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7062 if (!request->scan_plans[i].iterations ||
7063 (request->scan_plans[i].iterations >
7064 wiphy->max_sched_scan_plan_iterations))
7065 return -EINVAL;
7066 } else if (i < n_plans - 1) {
7067 /*
7068 * All scan plans but the last one must specify
7069 * a finite number of iterations
7070 */
7071 return -EINVAL;
7072 }
7073
7074 i++;
7075 }
7076
7077 /*
7078 * The last scan plan must not specify the number of
7079 * iterations, it is supposed to run infinitely
7080 */
7081 if (request->scan_plans[n_plans - 1].iterations)
7082 return -EINVAL;
7083
7084 return 0;
7085 }
7086
7087 static struct cfg80211_sched_scan_request *
7088 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7089 struct nlattr **attrs, int max_match_sets)
7090 {
7091 struct cfg80211_sched_scan_request *request;
7092 struct nlattr *attr;
7093 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7094 enum nl80211_band band;
7095 size_t ie_len;
7096 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7097 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7098
7099 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7100 return ERR_PTR(-EINVAL);
7101
7102 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7103 n_channels = validate_scan_freqs(
7104 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7105 if (!n_channels)
7106 return ERR_PTR(-EINVAL);
7107 } else {
7108 n_channels = ieee80211_get_num_supported_channels(wiphy);
7109 }
7110
7111 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7112 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7113 tmp)
7114 n_ssids++;
7115
7116 if (n_ssids > wiphy->max_sched_scan_ssids)
7117 return ERR_PTR(-EINVAL);
7118
7119 /*
7120 * First, count the number of 'real' matchsets. Due to an issue with
7121 * the old implementation, matchsets containing only the RSSI attribute
7122 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7123 * RSSI for all matchsets, rather than their own matchset for reporting
7124 * all APs with a strong RSSI. This is needed to be compatible with
7125 * older userspace that treated a matchset with only the RSSI as the
7126 * global RSSI for all other matchsets - if there are other matchsets.
7127 */
7128 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7129 nla_for_each_nested(attr,
7130 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7131 tmp) {
7132 struct nlattr *rssi;
7133
7134 err = nla_parse_nested(tb,
7135 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7136 attr, nl80211_match_policy,
7137 NULL);
7138 if (err)
7139 return ERR_PTR(err);
7140
7141 /* SSID and BSSID are mutually exclusive */
7142 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7143 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7144 return ERR_PTR(-EINVAL);
7145
7146 /* add other standalone attributes here */
7147 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7148 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7149 n_match_sets++;
7150 continue;
7151 }
7152 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7153 if (rssi)
7154 default_match_rssi = nla_get_s32(rssi);
7155 }
7156 }
7157
7158 /* However, if there's no other matchset, add the RSSI one */
7159 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7160 n_match_sets = 1;
7161
7162 if (n_match_sets > max_match_sets)
7163 return ERR_PTR(-EINVAL);
7164
7165 if (attrs[NL80211_ATTR_IE])
7166 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7167 else
7168 ie_len = 0;
7169
7170 if (ie_len > wiphy->max_sched_scan_ie_len)
7171 return ERR_PTR(-EINVAL);
7172
7173 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7174 /*
7175 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7176 * each scan plan already specifies its own interval
7177 */
7178 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7179 return ERR_PTR(-EINVAL);
7180
7181 nla_for_each_nested(attr,
7182 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7183 n_plans++;
7184 } else {
7185 /*
7186 * The scan interval attribute is kept for backward
7187 * compatibility. If no scan plans are specified and sched scan
7188 * interval is specified, one scan plan will be set with this
7189 * scan interval and infinite number of iterations.
7190 */
7191 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7192 return ERR_PTR(-EINVAL);
7193
7194 n_plans = 1;
7195 }
7196
7197 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7198 return ERR_PTR(-EINVAL);
7199
7200 if (!wiphy_ext_feature_isset(
7201 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7202 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7203 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7204 return ERR_PTR(-EINVAL);
7205
7206 request = kzalloc(sizeof(*request)
7207 + sizeof(*request->ssids) * n_ssids
7208 + sizeof(*request->match_sets) * n_match_sets
7209 + sizeof(*request->scan_plans) * n_plans
7210 + sizeof(*request->channels) * n_channels
7211 + ie_len, GFP_KERNEL);
7212 if (!request)
7213 return ERR_PTR(-ENOMEM);
7214
7215 if (n_ssids)
7216 request->ssids = (void *)&request->channels[n_channels];
7217 request->n_ssids = n_ssids;
7218 if (ie_len) {
7219 if (n_ssids)
7220 request->ie = (void *)(request->ssids + n_ssids);
7221 else
7222 request->ie = (void *)(request->channels + n_channels);
7223 }
7224
7225 if (n_match_sets) {
7226 if (request->ie)
7227 request->match_sets = (void *)(request->ie + ie_len);
7228 else if (n_ssids)
7229 request->match_sets =
7230 (void *)(request->ssids + n_ssids);
7231 else
7232 request->match_sets =
7233 (void *)(request->channels + n_channels);
7234 }
7235 request->n_match_sets = n_match_sets;
7236
7237 if (n_match_sets)
7238 request->scan_plans = (void *)(request->match_sets +
7239 n_match_sets);
7240 else if (request->ie)
7241 request->scan_plans = (void *)(request->ie + ie_len);
7242 else if (n_ssids)
7243 request->scan_plans = (void *)(request->ssids + n_ssids);
7244 else
7245 request->scan_plans = (void *)(request->channels + n_channels);
7246
7247 request->n_scan_plans = n_plans;
7248
7249 i = 0;
7250 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7251 /* user specified, bail out if channel not found */
7252 nla_for_each_nested(attr,
7253 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7254 tmp) {
7255 struct ieee80211_channel *chan;
7256
7257 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7258
7259 if (!chan) {
7260 err = -EINVAL;
7261 goto out_free;
7262 }
7263
7264 /* ignore disabled channels */
7265 if (chan->flags & IEEE80211_CHAN_DISABLED)
7266 continue;
7267
7268 request->channels[i] = chan;
7269 i++;
7270 }
7271 } else {
7272 /* all channels */
7273 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7274 int j;
7275
7276 if (!wiphy->bands[band])
7277 continue;
7278 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7279 struct ieee80211_channel *chan;
7280
7281 chan = &wiphy->bands[band]->channels[j];
7282
7283 if (chan->flags & IEEE80211_CHAN_DISABLED)
7284 continue;
7285
7286 request->channels[i] = chan;
7287 i++;
7288 }
7289 }
7290 }
7291
7292 if (!i) {
7293 err = -EINVAL;
7294 goto out_free;
7295 }
7296
7297 request->n_channels = i;
7298
7299 i = 0;
7300 if (n_ssids) {
7301 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7302 tmp) {
7303 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7304 err = -EINVAL;
7305 goto out_free;
7306 }
7307 request->ssids[i].ssid_len = nla_len(attr);
7308 memcpy(request->ssids[i].ssid, nla_data(attr),
7309 nla_len(attr));
7310 i++;
7311 }
7312 }
7313
7314 i = 0;
7315 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7316 nla_for_each_nested(attr,
7317 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7318 tmp) {
7319 struct nlattr *ssid, *bssid, *rssi;
7320
7321 err = nla_parse_nested(tb,
7322 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7323 attr, nl80211_match_policy,
7324 NULL);
7325 if (err)
7326 goto out_free;
7327 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7328 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7329 if (ssid || bssid) {
7330 if (WARN_ON(i >= n_match_sets)) {
7331 /* this indicates a programming error,
7332 * the loop above should have verified
7333 * things properly
7334 */
7335 err = -EINVAL;
7336 goto out_free;
7337 }
7338
7339 if (ssid) {
7340 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7341 err = -EINVAL;
7342 goto out_free;
7343 }
7344 memcpy(request->match_sets[i].ssid.ssid,
7345 nla_data(ssid), nla_len(ssid));
7346 request->match_sets[i].ssid.ssid_len =
7347 nla_len(ssid);
7348 }
7349 if (bssid) {
7350 if (nla_len(bssid) != ETH_ALEN) {
7351 err = -EINVAL;
7352 goto out_free;
7353 }
7354 memcpy(request->match_sets[i].bssid,
7355 nla_data(bssid), ETH_ALEN);
7356 }
7357
7358 /* special attribute - old implementation w/a */
7359 request->match_sets[i].rssi_thold =
7360 default_match_rssi;
7361 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7362 if (rssi)
7363 request->match_sets[i].rssi_thold =
7364 nla_get_s32(rssi);
7365 }
7366 i++;
7367 }
7368
7369 /* there was no other matchset, so the RSSI one is alone */
7370 if (i == 0 && n_match_sets)
7371 request->match_sets[0].rssi_thold = default_match_rssi;
7372
7373 request->min_rssi_thold = INT_MAX;
7374 for (i = 0; i < n_match_sets; i++)
7375 request->min_rssi_thold =
7376 min(request->match_sets[i].rssi_thold,
7377 request->min_rssi_thold);
7378 } else {
7379 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7380 }
7381
7382 if (ie_len) {
7383 request->ie_len = ie_len;
7384 memcpy((void *)request->ie,
7385 nla_data(attrs[NL80211_ATTR_IE]),
7386 request->ie_len);
7387 }
7388
7389 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7390 if (err)
7391 goto out_free;
7392
7393 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7394 request->delay =
7395 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7396
7397 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7398 request->relative_rssi = nla_get_s8(
7399 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7400 request->relative_rssi_set = true;
7401 }
7402
7403 if (request->relative_rssi_set &&
7404 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7405 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7406
7407 rssi_adjust = nla_data(
7408 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7409 request->rssi_adjust.band = rssi_adjust->band;
7410 request->rssi_adjust.delta = rssi_adjust->delta;
7411 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7412 err = -EINVAL;
7413 goto out_free;
7414 }
7415 }
7416
7417 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7418 if (err)
7419 goto out_free;
7420
7421 request->scan_start = jiffies;
7422
7423 return request;
7424
7425 out_free:
7426 kfree(request);
7427 return ERR_PTR(err);
7428 }
7429
7430 static int nl80211_start_sched_scan(struct sk_buff *skb,
7431 struct genl_info *info)
7432 {
7433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7434 struct net_device *dev = info->user_ptr[1];
7435 struct wireless_dev *wdev = dev->ieee80211_ptr;
7436 struct cfg80211_sched_scan_request *sched_scan_req;
7437 bool want_multi;
7438 int err;
7439
7440 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7441 return -EOPNOTSUPP;
7442
7443 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7444 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7445 if (err)
7446 return err;
7447
7448 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7449 info->attrs,
7450 rdev->wiphy.max_match_sets);
7451
7452 err = PTR_ERR_OR_ZERO(sched_scan_req);
7453 if (err)
7454 goto out_err;
7455
7456 /* leave request id zero for legacy request
7457 * or if driver does not support multi-scheduled scan
7458 */
7459 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7460 while (!sched_scan_req->reqid)
7461 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7462 }
7463
7464 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7465 if (err)
7466 goto out_free;
7467
7468 sched_scan_req->dev = dev;
7469 sched_scan_req->wiphy = &rdev->wiphy;
7470
7471 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7472 sched_scan_req->owner_nlportid = info->snd_portid;
7473
7474 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7475
7476 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7477 return 0;
7478
7479 out_free:
7480 kfree(sched_scan_req);
7481 out_err:
7482 return err;
7483 }
7484
7485 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7486 struct genl_info *info)
7487 {
7488 struct cfg80211_sched_scan_request *req;
7489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7490 u64 cookie;
7491
7492 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7493 return -EOPNOTSUPP;
7494
7495 if (info->attrs[NL80211_ATTR_COOKIE]) {
7496 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7497 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7498 }
7499
7500 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7501 struct cfg80211_sched_scan_request,
7502 list);
7503 if (!req || req->reqid ||
7504 (req->owner_nlportid &&
7505 req->owner_nlportid != info->snd_portid))
7506 return -ENOENT;
7507
7508 return cfg80211_stop_sched_scan_req(rdev, req, false);
7509 }
7510
7511 static int nl80211_start_radar_detection(struct sk_buff *skb,
7512 struct genl_info *info)
7513 {
7514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7515 struct net_device *dev = info->user_ptr[1];
7516 struct wireless_dev *wdev = dev->ieee80211_ptr;
7517 struct cfg80211_chan_def chandef;
7518 enum nl80211_dfs_regions dfs_region;
7519 unsigned int cac_time_ms;
7520 int err;
7521
7522 dfs_region = reg_get_dfs_region(wdev->wiphy);
7523 if (dfs_region == NL80211_DFS_UNSET)
7524 return -EINVAL;
7525
7526 err = nl80211_parse_chandef(rdev, info, &chandef);
7527 if (err)
7528 return err;
7529
7530 if (netif_carrier_ok(dev))
7531 return -EBUSY;
7532
7533 if (wdev->cac_started)
7534 return -EBUSY;
7535
7536 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7537 wdev->iftype);
7538 if (err < 0)
7539 return err;
7540
7541 if (err == 0)
7542 return -EINVAL;
7543
7544 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7545 return -EINVAL;
7546
7547 if (!rdev->ops->start_radar_detection)
7548 return -EOPNOTSUPP;
7549
7550 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7551 if (WARN_ON(!cac_time_ms))
7552 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7553
7554 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7555 if (!err) {
7556 wdev->chandef = chandef;
7557 wdev->cac_started = true;
7558 wdev->cac_start_time = jiffies;
7559 wdev->cac_time_ms = cac_time_ms;
7560 }
7561 return err;
7562 }
7563
7564 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7565 {
7566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7567 struct net_device *dev = info->user_ptr[1];
7568 struct wireless_dev *wdev = dev->ieee80211_ptr;
7569 struct cfg80211_csa_settings params;
7570 /* csa_attrs is defined static to avoid waste of stack size - this
7571 * function is called under RTNL lock, so this should not be a problem.
7572 */
7573 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7574 int err;
7575 bool need_new_beacon = false;
7576 bool need_handle_dfs_flag = true;
7577 int len, i;
7578 u32 cs_count;
7579
7580 if (!rdev->ops->channel_switch ||
7581 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7582 return -EOPNOTSUPP;
7583
7584 switch (dev->ieee80211_ptr->iftype) {
7585 case NL80211_IFTYPE_AP:
7586 case NL80211_IFTYPE_P2P_GO:
7587 need_new_beacon = true;
7588 /* For all modes except AP the handle_dfs flag needs to be
7589 * supplied to tell the kernel that userspace will handle radar
7590 * events when they happen. Otherwise a switch to a channel
7591 * requiring DFS will be rejected.
7592 */
7593 need_handle_dfs_flag = false;
7594
7595 /* useless if AP is not running */
7596 if (!wdev->beacon_interval)
7597 return -ENOTCONN;
7598 break;
7599 case NL80211_IFTYPE_ADHOC:
7600 if (!wdev->ssid_len)
7601 return -ENOTCONN;
7602 break;
7603 case NL80211_IFTYPE_MESH_POINT:
7604 if (!wdev->mesh_id_len)
7605 return -ENOTCONN;
7606 break;
7607 default:
7608 return -EOPNOTSUPP;
7609 }
7610
7611 memset(&params, 0, sizeof(params));
7612
7613 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7614 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7615 return -EINVAL;
7616
7617 /* only important for AP, IBSS and mesh create IEs internally */
7618 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7619 return -EINVAL;
7620
7621 /* Even though the attribute is u32, the specification says
7622 * u8, so let's make sure we don't overflow.
7623 */
7624 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7625 if (cs_count > 255)
7626 return -EINVAL;
7627
7628 params.count = cs_count;
7629
7630 if (!need_new_beacon)
7631 goto skip_beacons;
7632
7633 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7634 if (err)
7635 return err;
7636
7637 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7638 info->attrs[NL80211_ATTR_CSA_IES],
7639 nl80211_policy, info->extack);
7640 if (err)
7641 return err;
7642
7643 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7644 if (err)
7645 return err;
7646
7647 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7648 return -EINVAL;
7649
7650 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7651 if (!len || (len % sizeof(u16)))
7652 return -EINVAL;
7653
7654 params.n_counter_offsets_beacon = len / sizeof(u16);
7655 if (rdev->wiphy.max_num_csa_counters &&
7656 (params.n_counter_offsets_beacon >
7657 rdev->wiphy.max_num_csa_counters))
7658 return -EINVAL;
7659
7660 params.counter_offsets_beacon =
7661 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7662
7663 /* sanity checks - counters should fit and be the same */
7664 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7665 u16 offset = params.counter_offsets_beacon[i];
7666
7667 if (offset >= params.beacon_csa.tail_len)
7668 return -EINVAL;
7669
7670 if (params.beacon_csa.tail[offset] != params.count)
7671 return -EINVAL;
7672 }
7673
7674 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7675 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7676 if (!len || (len % sizeof(u16)))
7677 return -EINVAL;
7678
7679 params.n_counter_offsets_presp = len / sizeof(u16);
7680 if (rdev->wiphy.max_num_csa_counters &&
7681 (params.n_counter_offsets_presp >
7682 rdev->wiphy.max_num_csa_counters))
7683 return -EINVAL;
7684
7685 params.counter_offsets_presp =
7686 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7687
7688 /* sanity checks - counters should fit and be the same */
7689 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7690 u16 offset = params.counter_offsets_presp[i];
7691
7692 if (offset >= params.beacon_csa.probe_resp_len)
7693 return -EINVAL;
7694
7695 if (params.beacon_csa.probe_resp[offset] !=
7696 params.count)
7697 return -EINVAL;
7698 }
7699 }
7700
7701 skip_beacons:
7702 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7703 if (err)
7704 return err;
7705
7706 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7707 wdev->iftype))
7708 return -EINVAL;
7709
7710 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7711 &params.chandef,
7712 wdev->iftype);
7713 if (err < 0)
7714 return err;
7715
7716 if (err > 0) {
7717 params.radar_required = true;
7718 if (need_handle_dfs_flag &&
7719 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7720 return -EINVAL;
7721 }
7722 }
7723
7724 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7725 params.block_tx = true;
7726
7727 wdev_lock(wdev);
7728 err = rdev_channel_switch(rdev, dev, &params);
7729 wdev_unlock(wdev);
7730
7731 return err;
7732 }
7733
7734 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7735 u32 seq, int flags,
7736 struct cfg80211_registered_device *rdev,
7737 struct wireless_dev *wdev,
7738 struct cfg80211_internal_bss *intbss)
7739 {
7740 struct cfg80211_bss *res = &intbss->pub;
7741 const struct cfg80211_bss_ies *ies;
7742 void *hdr;
7743 struct nlattr *bss;
7744
7745 ASSERT_WDEV_LOCK(wdev);
7746
7747 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7748 NL80211_CMD_NEW_SCAN_RESULTS);
7749 if (!hdr)
7750 return -1;
7751
7752 genl_dump_check_consistent(cb, hdr);
7753
7754 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7755 goto nla_put_failure;
7756 if (wdev->netdev &&
7757 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7758 goto nla_put_failure;
7759 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7760 NL80211_ATTR_PAD))
7761 goto nla_put_failure;
7762
7763 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7764 if (!bss)
7765 goto nla_put_failure;
7766 if ((!is_zero_ether_addr(res->bssid) &&
7767 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7768 goto nla_put_failure;
7769
7770 rcu_read_lock();
7771 /* indicate whether we have probe response data or not */
7772 if (rcu_access_pointer(res->proberesp_ies) &&
7773 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7774 goto fail_unlock_rcu;
7775
7776 /* this pointer prefers to be pointed to probe response data
7777 * but is always valid
7778 */
7779 ies = rcu_dereference(res->ies);
7780 if (ies) {
7781 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7782 NL80211_BSS_PAD))
7783 goto fail_unlock_rcu;
7784 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7785 ies->len, ies->data))
7786 goto fail_unlock_rcu;
7787 }
7788
7789 /* and this pointer is always (unless driver didn't know) beacon data */
7790 ies = rcu_dereference(res->beacon_ies);
7791 if (ies && ies->from_beacon) {
7792 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7793 NL80211_BSS_PAD))
7794 goto fail_unlock_rcu;
7795 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7796 ies->len, ies->data))
7797 goto fail_unlock_rcu;
7798 }
7799 rcu_read_unlock();
7800
7801 if (res->beacon_interval &&
7802 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7803 goto nla_put_failure;
7804 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7805 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7806 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7807 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7808 jiffies_to_msecs(jiffies - intbss->ts)))
7809 goto nla_put_failure;
7810
7811 if (intbss->parent_tsf &&
7812 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7813 intbss->parent_tsf, NL80211_BSS_PAD) ||
7814 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7815 intbss->parent_bssid)))
7816 goto nla_put_failure;
7817
7818 if (intbss->ts_boottime &&
7819 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7820 intbss->ts_boottime, NL80211_BSS_PAD))
7821 goto nla_put_failure;
7822
7823 switch (rdev->wiphy.signal_type) {
7824 case CFG80211_SIGNAL_TYPE_MBM:
7825 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7826 goto nla_put_failure;
7827 break;
7828 case CFG80211_SIGNAL_TYPE_UNSPEC:
7829 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7830 goto nla_put_failure;
7831 break;
7832 default:
7833 break;
7834 }
7835
7836 switch (wdev->iftype) {
7837 case NL80211_IFTYPE_P2P_CLIENT:
7838 case NL80211_IFTYPE_STATION:
7839 if (intbss == wdev->current_bss &&
7840 nla_put_u32(msg, NL80211_BSS_STATUS,
7841 NL80211_BSS_STATUS_ASSOCIATED))
7842 goto nla_put_failure;
7843 break;
7844 case NL80211_IFTYPE_ADHOC:
7845 if (intbss == wdev->current_bss &&
7846 nla_put_u32(msg, NL80211_BSS_STATUS,
7847 NL80211_BSS_STATUS_IBSS_JOINED))
7848 goto nla_put_failure;
7849 break;
7850 default:
7851 break;
7852 }
7853
7854 nla_nest_end(msg, bss);
7855
7856 genlmsg_end(msg, hdr);
7857 return 0;
7858
7859 fail_unlock_rcu:
7860 rcu_read_unlock();
7861 nla_put_failure:
7862 genlmsg_cancel(msg, hdr);
7863 return -EMSGSIZE;
7864 }
7865
7866 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7867 {
7868 struct cfg80211_registered_device *rdev;
7869 struct cfg80211_internal_bss *scan;
7870 struct wireless_dev *wdev;
7871 int start = cb->args[2], idx = 0;
7872 int err;
7873
7874 rtnl_lock();
7875 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7876 if (err) {
7877 rtnl_unlock();
7878 return err;
7879 }
7880
7881 wdev_lock(wdev);
7882 spin_lock_bh(&rdev->bss_lock);
7883 cfg80211_bss_expire(rdev);
7884
7885 cb->seq = rdev->bss_generation;
7886
7887 list_for_each_entry(scan, &rdev->bss_list, list) {
7888 if (++idx <= start)
7889 continue;
7890 if (nl80211_send_bss(skb, cb,
7891 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7892 rdev, wdev, scan) < 0) {
7893 idx--;
7894 break;
7895 }
7896 }
7897
7898 spin_unlock_bh(&rdev->bss_lock);
7899 wdev_unlock(wdev);
7900
7901 cb->args[2] = idx;
7902 rtnl_unlock();
7903
7904 return skb->len;
7905 }
7906
7907 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7908 int flags, struct net_device *dev,
7909 bool allow_radio_stats,
7910 struct survey_info *survey)
7911 {
7912 void *hdr;
7913 struct nlattr *infoattr;
7914
7915 /* skip radio stats if userspace didn't request them */
7916 if (!survey->channel && !allow_radio_stats)
7917 return 0;
7918
7919 hdr = nl80211hdr_put(msg, portid, seq, flags,
7920 NL80211_CMD_NEW_SURVEY_RESULTS);
7921 if (!hdr)
7922 return -ENOMEM;
7923
7924 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7925 goto nla_put_failure;
7926
7927 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7928 if (!infoattr)
7929 goto nla_put_failure;
7930
7931 if (survey->channel &&
7932 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7933 survey->channel->center_freq))
7934 goto nla_put_failure;
7935
7936 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7937 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7938 goto nla_put_failure;
7939 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7940 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7941 goto nla_put_failure;
7942 if ((survey->filled & SURVEY_INFO_TIME) &&
7943 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7944 survey->time, NL80211_SURVEY_INFO_PAD))
7945 goto nla_put_failure;
7946 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7947 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7948 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7949 goto nla_put_failure;
7950 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7951 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7952 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7953 goto nla_put_failure;
7954 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7955 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7956 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7957 goto nla_put_failure;
7958 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7959 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7960 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7961 goto nla_put_failure;
7962 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7963 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7964 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7965 goto nla_put_failure;
7966
7967 nla_nest_end(msg, infoattr);
7968
7969 genlmsg_end(msg, hdr);
7970 return 0;
7971
7972 nla_put_failure:
7973 genlmsg_cancel(msg, hdr);
7974 return -EMSGSIZE;
7975 }
7976
7977 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7978 {
7979 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7980 struct survey_info survey;
7981 struct cfg80211_registered_device *rdev;
7982 struct wireless_dev *wdev;
7983 int survey_idx = cb->args[2];
7984 int res;
7985 bool radio_stats;
7986
7987 rtnl_lock();
7988 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7989 if (res)
7990 goto out_err;
7991
7992 /* prepare_wdev_dump parsed the attributes */
7993 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7994
7995 if (!wdev->netdev) {
7996 res = -EINVAL;
7997 goto out_err;
7998 }
7999
8000 if (!rdev->ops->dump_survey) {
8001 res = -EOPNOTSUPP;
8002 goto out_err;
8003 }
8004
8005 while (1) {
8006 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8007 if (res == -ENOENT)
8008 break;
8009 if (res)
8010 goto out_err;
8011
8012 /* don't send disabled channels, but do send non-channel data */
8013 if (survey.channel &&
8014 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8015 survey_idx++;
8016 continue;
8017 }
8018
8019 if (nl80211_send_survey(skb,
8020 NETLINK_CB(cb->skb).portid,
8021 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8022 wdev->netdev, radio_stats, &survey) < 0)
8023 goto out;
8024 survey_idx++;
8025 }
8026
8027 out:
8028 cb->args[2] = survey_idx;
8029 res = skb->len;
8030 out_err:
8031 rtnl_unlock();
8032 return res;
8033 }
8034
8035 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8036 {
8037 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8038 NL80211_WPA_VERSION_2));
8039 }
8040
8041 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8042 {
8043 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8044 struct net_device *dev = info->user_ptr[1];
8045 struct ieee80211_channel *chan;
8046 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8047 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8048 enum nl80211_auth_type auth_type;
8049 struct key_parse key;
8050 bool local_state_change;
8051
8052 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8053 return -EINVAL;
8054
8055 if (!info->attrs[NL80211_ATTR_MAC])
8056 return -EINVAL;
8057
8058 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8059 return -EINVAL;
8060
8061 if (!info->attrs[NL80211_ATTR_SSID])
8062 return -EINVAL;
8063
8064 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8065 return -EINVAL;
8066
8067 err = nl80211_parse_key(info, &key);
8068 if (err)
8069 return err;
8070
8071 if (key.idx >= 0) {
8072 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8073 return -EINVAL;
8074 if (!key.p.key || !key.p.key_len)
8075 return -EINVAL;
8076 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8077 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8078 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8079 key.p.key_len != WLAN_KEY_LEN_WEP104))
8080 return -EINVAL;
8081 if (key.idx > 3)
8082 return -EINVAL;
8083 } else {
8084 key.p.key_len = 0;
8085 key.p.key = NULL;
8086 }
8087
8088 if (key.idx >= 0) {
8089 int i;
8090 bool ok = false;
8091
8092 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8093 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8094 ok = true;
8095 break;
8096 }
8097 }
8098 if (!ok)
8099 return -EINVAL;
8100 }
8101
8102 if (!rdev->ops->auth)
8103 return -EOPNOTSUPP;
8104
8105 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8106 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8107 return -EOPNOTSUPP;
8108
8109 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8110 chan = nl80211_get_valid_chan(&rdev->wiphy,
8111 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8112 if (!chan)
8113 return -EINVAL;
8114
8115 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8116 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8117
8118 if (info->attrs[NL80211_ATTR_IE]) {
8119 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8120 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8121 }
8122
8123 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8124 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8125 return -EINVAL;
8126
8127 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8128 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8129 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8130 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8131 !info->attrs[NL80211_ATTR_AUTH_DATA])
8132 return -EINVAL;
8133
8134 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8135 if (auth_type != NL80211_AUTHTYPE_SAE &&
8136 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8137 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8138 auth_type != NL80211_AUTHTYPE_FILS_PK)
8139 return -EINVAL;
8140 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8141 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8142 /* need to include at least Auth Transaction and Status Code */
8143 if (auth_data_len < 4)
8144 return -EINVAL;
8145 }
8146
8147 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8148
8149 /*
8150 * Since we no longer track auth state, ignore
8151 * requests to only change local state.
8152 */
8153 if (local_state_change)
8154 return 0;
8155
8156 wdev_lock(dev->ieee80211_ptr);
8157 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8158 ssid, ssid_len, ie, ie_len,
8159 key.p.key, key.p.key_len, key.idx,
8160 auth_data, auth_data_len);
8161 wdev_unlock(dev->ieee80211_ptr);
8162 return err;
8163 }
8164
8165 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8166 struct genl_info *info,
8167 struct cfg80211_crypto_settings *settings,
8168 int cipher_limit)
8169 {
8170 memset(settings, 0, sizeof(*settings));
8171
8172 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8173
8174 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8175 u16 proto;
8176
8177 proto = nla_get_u16(
8178 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8179 settings->control_port_ethertype = cpu_to_be16(proto);
8180 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8181 proto != ETH_P_PAE)
8182 return -EINVAL;
8183 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8184 settings->control_port_no_encrypt = true;
8185 } else
8186 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8187
8188 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8189 void *data;
8190 int len, i;
8191
8192 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8193 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8194 settings->n_ciphers_pairwise = len / sizeof(u32);
8195
8196 if (len % sizeof(u32))
8197 return -EINVAL;
8198
8199 if (settings->n_ciphers_pairwise > cipher_limit)
8200 return -EINVAL;
8201
8202 memcpy(settings->ciphers_pairwise, data, len);
8203
8204 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8205 if (!cfg80211_supported_cipher_suite(
8206 &rdev->wiphy,
8207 settings->ciphers_pairwise[i]))
8208 return -EINVAL;
8209 }
8210
8211 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8212 settings->cipher_group =
8213 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8214 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8215 settings->cipher_group))
8216 return -EINVAL;
8217 }
8218
8219 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8220 settings->wpa_versions =
8221 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8222 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8223 return -EINVAL;
8224 }
8225
8226 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8227 void *data;
8228 int len;
8229
8230 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8231 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8232 settings->n_akm_suites = len / sizeof(u32);
8233
8234 if (len % sizeof(u32))
8235 return -EINVAL;
8236
8237 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8238 return -EINVAL;
8239
8240 memcpy(settings->akm_suites, data, len);
8241 }
8242
8243 if (info->attrs[NL80211_ATTR_PMK]) {
8244 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8245 return -EINVAL;
8246 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8247 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8248 return -EINVAL;
8249 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8250 }
8251
8252 return 0;
8253 }
8254
8255 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8256 {
8257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8258 struct net_device *dev = info->user_ptr[1];
8259 struct ieee80211_channel *chan;
8260 struct cfg80211_assoc_request req = {};
8261 const u8 *bssid, *ssid;
8262 int err, ssid_len = 0;
8263
8264 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8265 return -EINVAL;
8266
8267 if (!info->attrs[NL80211_ATTR_MAC] ||
8268 !info->attrs[NL80211_ATTR_SSID] ||
8269 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8270 return -EINVAL;
8271
8272 if (!rdev->ops->assoc)
8273 return -EOPNOTSUPP;
8274
8275 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8276 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8277 return -EOPNOTSUPP;
8278
8279 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8280
8281 chan = nl80211_get_valid_chan(&rdev->wiphy,
8282 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8283 if (!chan)
8284 return -EINVAL;
8285
8286 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8287 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8288
8289 if (info->attrs[NL80211_ATTR_IE]) {
8290 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8291 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8292 }
8293
8294 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8295 enum nl80211_mfp mfp =
8296 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8297 if (mfp == NL80211_MFP_REQUIRED)
8298 req.use_mfp = true;
8299 else if (mfp != NL80211_MFP_NO)
8300 return -EINVAL;
8301 }
8302
8303 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8304 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8305
8306 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8307 req.flags |= ASSOC_REQ_DISABLE_HT;
8308
8309 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8310 memcpy(&req.ht_capa_mask,
8311 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8312 sizeof(req.ht_capa_mask));
8313
8314 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8315 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8316 return -EINVAL;
8317 memcpy(&req.ht_capa,
8318 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8319 sizeof(req.ht_capa));
8320 }
8321
8322 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8323 req.flags |= ASSOC_REQ_DISABLE_VHT;
8324
8325 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8326 memcpy(&req.vht_capa_mask,
8327 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8328 sizeof(req.vht_capa_mask));
8329
8330 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8331 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8332 return -EINVAL;
8333 memcpy(&req.vht_capa,
8334 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8335 sizeof(req.vht_capa));
8336 }
8337
8338 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8339 if (!((rdev->wiphy.features &
8340 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8341 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8342 !wiphy_ext_feature_isset(&rdev->wiphy,
8343 NL80211_EXT_FEATURE_RRM))
8344 return -EINVAL;
8345 req.flags |= ASSOC_REQ_USE_RRM;
8346 }
8347
8348 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8349 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8350 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8351 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8352 return -EINVAL;
8353 req.fils_nonces =
8354 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8355 }
8356
8357 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8358 if (!err) {
8359 wdev_lock(dev->ieee80211_ptr);
8360
8361 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8362 ssid, ssid_len, &req);
8363
8364 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8365 dev->ieee80211_ptr->conn_owner_nlportid =
8366 info->snd_portid;
8367 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8368 bssid, ETH_ALEN);
8369 }
8370
8371 wdev_unlock(dev->ieee80211_ptr);
8372 }
8373
8374 return err;
8375 }
8376
8377 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8378 {
8379 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8380 struct net_device *dev = info->user_ptr[1];
8381 const u8 *ie = NULL, *bssid;
8382 int ie_len = 0, err;
8383 u16 reason_code;
8384 bool local_state_change;
8385
8386 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8387 return -EINVAL;
8388
8389 if (!info->attrs[NL80211_ATTR_MAC])
8390 return -EINVAL;
8391
8392 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8393 return -EINVAL;
8394
8395 if (!rdev->ops->deauth)
8396 return -EOPNOTSUPP;
8397
8398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8400 return -EOPNOTSUPP;
8401
8402 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8403
8404 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8405 if (reason_code == 0) {
8406 /* Reason Code 0 is reserved */
8407 return -EINVAL;
8408 }
8409
8410 if (info->attrs[NL80211_ATTR_IE]) {
8411 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8412 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8413 }
8414
8415 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8416
8417 wdev_lock(dev->ieee80211_ptr);
8418 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8419 local_state_change);
8420 wdev_unlock(dev->ieee80211_ptr);
8421 return err;
8422 }
8423
8424 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8425 {
8426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8427 struct net_device *dev = info->user_ptr[1];
8428 const u8 *ie = NULL, *bssid;
8429 int ie_len = 0, err;
8430 u16 reason_code;
8431 bool local_state_change;
8432
8433 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8434 return -EINVAL;
8435
8436 if (!info->attrs[NL80211_ATTR_MAC])
8437 return -EINVAL;
8438
8439 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8440 return -EINVAL;
8441
8442 if (!rdev->ops->disassoc)
8443 return -EOPNOTSUPP;
8444
8445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8446 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8447 return -EOPNOTSUPP;
8448
8449 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8450
8451 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8452 if (reason_code == 0) {
8453 /* Reason Code 0 is reserved */
8454 return -EINVAL;
8455 }
8456
8457 if (info->attrs[NL80211_ATTR_IE]) {
8458 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8459 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8460 }
8461
8462 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8463
8464 wdev_lock(dev->ieee80211_ptr);
8465 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8466 local_state_change);
8467 wdev_unlock(dev->ieee80211_ptr);
8468 return err;
8469 }
8470
8471 static bool
8472 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8473 int mcast_rate[NUM_NL80211_BANDS],
8474 int rateval)
8475 {
8476 struct wiphy *wiphy = &rdev->wiphy;
8477 bool found = false;
8478 int band, i;
8479
8480 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8481 struct ieee80211_supported_band *sband;
8482
8483 sband = wiphy->bands[band];
8484 if (!sband)
8485 continue;
8486
8487 for (i = 0; i < sband->n_bitrates; i++) {
8488 if (sband->bitrates[i].bitrate == rateval) {
8489 mcast_rate[band] = i + 1;
8490 found = true;
8491 break;
8492 }
8493 }
8494 }
8495
8496 return found;
8497 }
8498
8499 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8500 {
8501 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8502 struct net_device *dev = info->user_ptr[1];
8503 struct cfg80211_ibss_params ibss;
8504 struct wiphy *wiphy;
8505 struct cfg80211_cached_keys *connkeys = NULL;
8506 int err;
8507
8508 memset(&ibss, 0, sizeof(ibss));
8509
8510 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8511 return -EINVAL;
8512
8513 if (!info->attrs[NL80211_ATTR_SSID] ||
8514 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8515 return -EINVAL;
8516
8517 ibss.beacon_interval = 100;
8518
8519 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8520 ibss.beacon_interval =
8521 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8522
8523 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8524 ibss.beacon_interval);
8525 if (err)
8526 return err;
8527
8528 if (!rdev->ops->join_ibss)
8529 return -EOPNOTSUPP;
8530
8531 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8532 return -EOPNOTSUPP;
8533
8534 wiphy = &rdev->wiphy;
8535
8536 if (info->attrs[NL80211_ATTR_MAC]) {
8537 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8538
8539 if (!is_valid_ether_addr(ibss.bssid))
8540 return -EINVAL;
8541 }
8542 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8543 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8544
8545 if (info->attrs[NL80211_ATTR_IE]) {
8546 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8547 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8548 }
8549
8550 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8551 if (err)
8552 return err;
8553
8554 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8555 NL80211_IFTYPE_ADHOC))
8556 return -EINVAL;
8557
8558 switch (ibss.chandef.width) {
8559 case NL80211_CHAN_WIDTH_5:
8560 case NL80211_CHAN_WIDTH_10:
8561 case NL80211_CHAN_WIDTH_20_NOHT:
8562 break;
8563 case NL80211_CHAN_WIDTH_20:
8564 case NL80211_CHAN_WIDTH_40:
8565 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8566 return -EINVAL;
8567 break;
8568 case NL80211_CHAN_WIDTH_80:
8569 case NL80211_CHAN_WIDTH_80P80:
8570 case NL80211_CHAN_WIDTH_160:
8571 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8572 return -EINVAL;
8573 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8574 NL80211_EXT_FEATURE_VHT_IBSS))
8575 return -EINVAL;
8576 break;
8577 default:
8578 return -EINVAL;
8579 }
8580
8581 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8582 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8583
8584 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8585 u8 *rates =
8586 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8587 int n_rates =
8588 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8589 struct ieee80211_supported_band *sband =
8590 wiphy->bands[ibss.chandef.chan->band];
8591
8592 err = ieee80211_get_ratemask(sband, rates, n_rates,
8593 &ibss.basic_rates);
8594 if (err)
8595 return err;
8596 }
8597
8598 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8599 memcpy(&ibss.ht_capa_mask,
8600 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8601 sizeof(ibss.ht_capa_mask));
8602
8603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8604 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8605 return -EINVAL;
8606 memcpy(&ibss.ht_capa,
8607 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8608 sizeof(ibss.ht_capa));
8609 }
8610
8611 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8612 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8613 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8614 return -EINVAL;
8615
8616 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8617 bool no_ht = false;
8618
8619 connkeys = nl80211_parse_connkeys(rdev,
8620 info->attrs[NL80211_ATTR_KEYS],
8621 &no_ht);
8622 if (IS_ERR(connkeys))
8623 return PTR_ERR(connkeys);
8624
8625 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8626 no_ht) {
8627 kzfree(connkeys);
8628 return -EINVAL;
8629 }
8630 }
8631
8632 ibss.control_port =
8633 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8634
8635 ibss.userspace_handles_dfs =
8636 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8637
8638 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8639 if (err)
8640 kzfree(connkeys);
8641 return err;
8642 }
8643
8644 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8645 {
8646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8647 struct net_device *dev = info->user_ptr[1];
8648
8649 if (!rdev->ops->leave_ibss)
8650 return -EOPNOTSUPP;
8651
8652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8653 return -EOPNOTSUPP;
8654
8655 return cfg80211_leave_ibss(rdev, dev, false);
8656 }
8657
8658 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8659 {
8660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661 struct net_device *dev = info->user_ptr[1];
8662 int mcast_rate[NUM_NL80211_BANDS];
8663 u32 nla_rate;
8664 int err;
8665
8666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8667 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8668 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8669 return -EOPNOTSUPP;
8670
8671 if (!rdev->ops->set_mcast_rate)
8672 return -EOPNOTSUPP;
8673
8674 memset(mcast_rate, 0, sizeof(mcast_rate));
8675
8676 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8677 return -EINVAL;
8678
8679 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8680 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8681 return -EINVAL;
8682
8683 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8684
8685 return err;
8686 }
8687
8688 static struct sk_buff *
8689 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8690 struct wireless_dev *wdev, int approxlen,
8691 u32 portid, u32 seq, enum nl80211_commands cmd,
8692 enum nl80211_attrs attr,
8693 const struct nl80211_vendor_cmd_info *info,
8694 gfp_t gfp)
8695 {
8696 struct sk_buff *skb;
8697 void *hdr;
8698 struct nlattr *data;
8699
8700 skb = nlmsg_new(approxlen + 100, gfp);
8701 if (!skb)
8702 return NULL;
8703
8704 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8705 if (!hdr) {
8706 kfree_skb(skb);
8707 return NULL;
8708 }
8709
8710 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8711 goto nla_put_failure;
8712
8713 if (info) {
8714 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8715 info->vendor_id))
8716 goto nla_put_failure;
8717 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8718 info->subcmd))
8719 goto nla_put_failure;
8720 }
8721
8722 if (wdev) {
8723 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8724 wdev_id(wdev), NL80211_ATTR_PAD))
8725 goto nla_put_failure;
8726 if (wdev->netdev &&
8727 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8728 wdev->netdev->ifindex))
8729 goto nla_put_failure;
8730 }
8731
8732 data = nla_nest_start(skb, attr);
8733 if (!data)
8734 goto nla_put_failure;
8735
8736 ((void **)skb->cb)[0] = rdev;
8737 ((void **)skb->cb)[1] = hdr;
8738 ((void **)skb->cb)[2] = data;
8739
8740 return skb;
8741
8742 nla_put_failure:
8743 kfree_skb(skb);
8744 return NULL;
8745 }
8746
8747 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8748 struct wireless_dev *wdev,
8749 enum nl80211_commands cmd,
8750 enum nl80211_attrs attr,
8751 int vendor_event_idx,
8752 int approxlen, gfp_t gfp)
8753 {
8754 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8755 const struct nl80211_vendor_cmd_info *info;
8756
8757 switch (cmd) {
8758 case NL80211_CMD_TESTMODE:
8759 if (WARN_ON(vendor_event_idx != -1))
8760 return NULL;
8761 info = NULL;
8762 break;
8763 case NL80211_CMD_VENDOR:
8764 if (WARN_ON(vendor_event_idx < 0 ||
8765 vendor_event_idx >= wiphy->n_vendor_events))
8766 return NULL;
8767 info = &wiphy->vendor_events[vendor_event_idx];
8768 break;
8769 default:
8770 WARN_ON(1);
8771 return NULL;
8772 }
8773
8774 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8775 cmd, attr, info, gfp);
8776 }
8777 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8778
8779 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8780 {
8781 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8782 void *hdr = ((void **)skb->cb)[1];
8783 struct nlattr *data = ((void **)skb->cb)[2];
8784 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8785
8786 /* clear CB data for netlink core to own from now on */
8787 memset(skb->cb, 0, sizeof(skb->cb));
8788
8789 nla_nest_end(skb, data);
8790 genlmsg_end(skb, hdr);
8791
8792 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8793 mcgrp = NL80211_MCGRP_VENDOR;
8794
8795 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8796 mcgrp, gfp);
8797 }
8798 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8799
8800 #ifdef CONFIG_NL80211_TESTMODE
8801 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8802 {
8803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8804 struct wireless_dev *wdev =
8805 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8806 int err;
8807
8808 if (!rdev->ops->testmode_cmd)
8809 return -EOPNOTSUPP;
8810
8811 if (IS_ERR(wdev)) {
8812 err = PTR_ERR(wdev);
8813 if (err != -EINVAL)
8814 return err;
8815 wdev = NULL;
8816 } else if (wdev->wiphy != &rdev->wiphy) {
8817 return -EINVAL;
8818 }
8819
8820 if (!info->attrs[NL80211_ATTR_TESTDATA])
8821 return -EINVAL;
8822
8823 rdev->cur_cmd_info = info;
8824 err = rdev_testmode_cmd(rdev, wdev,
8825 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8826 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8827 rdev->cur_cmd_info = NULL;
8828
8829 return err;
8830 }
8831
8832 static int nl80211_testmode_dump(struct sk_buff *skb,
8833 struct netlink_callback *cb)
8834 {
8835 struct cfg80211_registered_device *rdev;
8836 int err;
8837 long phy_idx;
8838 void *data = NULL;
8839 int data_len = 0;
8840
8841 rtnl_lock();
8842
8843 if (cb->args[0]) {
8844 /*
8845 * 0 is a valid index, but not valid for args[0],
8846 * so we need to offset by 1.
8847 */
8848 phy_idx = cb->args[0] - 1;
8849
8850 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8851 if (!rdev) {
8852 err = -ENOENT;
8853 goto out_err;
8854 }
8855 } else {
8856 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8857
8858 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8859 attrbuf, nl80211_fam.maxattr,
8860 nl80211_policy, NULL);
8861 if (err)
8862 goto out_err;
8863
8864 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8865 if (IS_ERR(rdev)) {
8866 err = PTR_ERR(rdev);
8867 goto out_err;
8868 }
8869 phy_idx = rdev->wiphy_idx;
8870
8871 if (attrbuf[NL80211_ATTR_TESTDATA])
8872 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8873 }
8874
8875 if (cb->args[1]) {
8876 data = nla_data((void *)cb->args[1]);
8877 data_len = nla_len((void *)cb->args[1]);
8878 }
8879
8880 if (!rdev->ops->testmode_dump) {
8881 err = -EOPNOTSUPP;
8882 goto out_err;
8883 }
8884
8885 while (1) {
8886 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8887 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8888 NL80211_CMD_TESTMODE);
8889 struct nlattr *tmdata;
8890
8891 if (!hdr)
8892 break;
8893
8894 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8895 genlmsg_cancel(skb, hdr);
8896 break;
8897 }
8898
8899 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8900 if (!tmdata) {
8901 genlmsg_cancel(skb, hdr);
8902 break;
8903 }
8904 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8905 nla_nest_end(skb, tmdata);
8906
8907 if (err == -ENOBUFS || err == -ENOENT) {
8908 genlmsg_cancel(skb, hdr);
8909 break;
8910 } else if (err) {
8911 genlmsg_cancel(skb, hdr);
8912 goto out_err;
8913 }
8914
8915 genlmsg_end(skb, hdr);
8916 }
8917
8918 err = skb->len;
8919 /* see above */
8920 cb->args[0] = phy_idx + 1;
8921 out_err:
8922 rtnl_unlock();
8923 return err;
8924 }
8925 #endif
8926
8927 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8928 {
8929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930 struct net_device *dev = info->user_ptr[1];
8931 struct cfg80211_connect_params connect;
8932 struct wiphy *wiphy;
8933 struct cfg80211_cached_keys *connkeys = NULL;
8934 int err;
8935
8936 memset(&connect, 0, sizeof(connect));
8937
8938 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8939 return -EINVAL;
8940
8941 if (!info->attrs[NL80211_ATTR_SSID] ||
8942 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8943 return -EINVAL;
8944
8945 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8946 connect.auth_type =
8947 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8948 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8949 NL80211_CMD_CONNECT))
8950 return -EINVAL;
8951 } else
8952 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8953
8954 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8955
8956 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8957 !wiphy_ext_feature_isset(&rdev->wiphy,
8958 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8959 return -EINVAL;
8960 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8961
8962 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8963 NL80211_MAX_NR_CIPHER_SUITES);
8964 if (err)
8965 return err;
8966
8967 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8968 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8969 return -EOPNOTSUPP;
8970
8971 wiphy = &rdev->wiphy;
8972
8973 connect.bg_scan_period = -1;
8974 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8975 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8976 connect.bg_scan_period =
8977 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8978 }
8979
8980 if (info->attrs[NL80211_ATTR_MAC])
8981 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8982 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8983 connect.bssid_hint =
8984 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8985 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8986 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8987
8988 if (info->attrs[NL80211_ATTR_IE]) {
8989 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8990 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8991 }
8992
8993 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8994 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8995 if (connect.mfp == NL80211_MFP_OPTIONAL &&
8996 !wiphy_ext_feature_isset(&rdev->wiphy,
8997 NL80211_EXT_FEATURE_MFP_OPTIONAL))
8998 return -EOPNOTSUPP;
8999
9000 if (connect.mfp != NL80211_MFP_REQUIRED &&
9001 connect.mfp != NL80211_MFP_NO &&
9002 connect.mfp != NL80211_MFP_OPTIONAL)
9003 return -EINVAL;
9004 } else {
9005 connect.mfp = NL80211_MFP_NO;
9006 }
9007
9008 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9009 connect.prev_bssid =
9010 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9011
9012 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9013 connect.channel = nl80211_get_valid_chan(
9014 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9015 if (!connect.channel)
9016 return -EINVAL;
9017 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9018 connect.channel_hint = nl80211_get_valid_chan(
9019 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9020 if (!connect.channel_hint)
9021 return -EINVAL;
9022 }
9023
9024 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9025 connkeys = nl80211_parse_connkeys(rdev,
9026 info->attrs[NL80211_ATTR_KEYS], NULL);
9027 if (IS_ERR(connkeys))
9028 return PTR_ERR(connkeys);
9029 }
9030
9031 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9032 connect.flags |= ASSOC_REQ_DISABLE_HT;
9033
9034 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9035 memcpy(&connect.ht_capa_mask,
9036 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9037 sizeof(connect.ht_capa_mask));
9038
9039 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9040 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9041 kzfree(connkeys);
9042 return -EINVAL;
9043 }
9044 memcpy(&connect.ht_capa,
9045 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9046 sizeof(connect.ht_capa));
9047 }
9048
9049 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9050 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9051
9052 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9053 memcpy(&connect.vht_capa_mask,
9054 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9055 sizeof(connect.vht_capa_mask));
9056
9057 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9058 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9059 kzfree(connkeys);
9060 return -EINVAL;
9061 }
9062 memcpy(&connect.vht_capa,
9063 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9064 sizeof(connect.vht_capa));
9065 }
9066
9067 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9068 if (!((rdev->wiphy.features &
9069 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9070 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9071 !wiphy_ext_feature_isset(&rdev->wiphy,
9072 NL80211_EXT_FEATURE_RRM)) {
9073 kzfree(connkeys);
9074 return -EINVAL;
9075 }
9076 connect.flags |= ASSOC_REQ_USE_RRM;
9077 }
9078
9079 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9080 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9081 kzfree(connkeys);
9082 return -EOPNOTSUPP;
9083 }
9084
9085 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9086 /* bss selection makes no sense if bssid is set */
9087 if (connect.bssid) {
9088 kzfree(connkeys);
9089 return -EINVAL;
9090 }
9091
9092 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9093 wiphy, &connect.bss_select);
9094 if (err) {
9095 kzfree(connkeys);
9096 return err;
9097 }
9098 }
9099
9100 if (wiphy_ext_feature_isset(&rdev->wiphy,
9101 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9102 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9103 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9104 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9105 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9106 connect.fils_erp_username =
9107 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9108 connect.fils_erp_username_len =
9109 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9110 connect.fils_erp_realm =
9111 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9112 connect.fils_erp_realm_len =
9113 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9114 connect.fils_erp_next_seq_num =
9115 nla_get_u16(
9116 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9117 connect.fils_erp_rrk =
9118 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9119 connect.fils_erp_rrk_len =
9120 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9121 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9122 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9123 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9124 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9125 kzfree(connkeys);
9126 return -EINVAL;
9127 }
9128
9129 wdev_lock(dev->ieee80211_ptr);
9130
9131 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9132 connect.prev_bssid);
9133 if (err)
9134 kzfree(connkeys);
9135
9136 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9137 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9138 if (connect.bssid)
9139 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9140 connect.bssid, ETH_ALEN);
9141 else
9142 memset(dev->ieee80211_ptr->disconnect_bssid,
9143 0, ETH_ALEN);
9144 }
9145
9146 wdev_unlock(dev->ieee80211_ptr);
9147
9148 return err;
9149 }
9150
9151 static int nl80211_update_connect_params(struct sk_buff *skb,
9152 struct genl_info *info)
9153 {
9154 struct cfg80211_connect_params connect = {};
9155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9156 struct net_device *dev = info->user_ptr[1];
9157 struct wireless_dev *wdev = dev->ieee80211_ptr;
9158 u32 changed = 0;
9159 int ret;
9160
9161 if (!rdev->ops->update_connect_params)
9162 return -EOPNOTSUPP;
9163
9164 if (info->attrs[NL80211_ATTR_IE]) {
9165 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9166 return -EINVAL;
9167 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9168 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9169 changed |= UPDATE_ASSOC_IES;
9170 }
9171
9172 wdev_lock(dev->ieee80211_ptr);
9173 if (!wdev->current_bss)
9174 ret = -ENOLINK;
9175 else
9176 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9177 wdev_unlock(dev->ieee80211_ptr);
9178
9179 return ret;
9180 }
9181
9182 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9183 {
9184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9185 struct net_device *dev = info->user_ptr[1];
9186 u16 reason;
9187 int ret;
9188
9189 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9190 reason = WLAN_REASON_DEAUTH_LEAVING;
9191 else
9192 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9193
9194 if (reason == 0)
9195 return -EINVAL;
9196
9197 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9198 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9199 return -EOPNOTSUPP;
9200
9201 wdev_lock(dev->ieee80211_ptr);
9202 ret = cfg80211_disconnect(rdev, dev, reason, true);
9203 wdev_unlock(dev->ieee80211_ptr);
9204 return ret;
9205 }
9206
9207 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9208 {
9209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9210 struct net *net;
9211 int err;
9212
9213 if (info->attrs[NL80211_ATTR_PID]) {
9214 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9215
9216 net = get_net_ns_by_pid(pid);
9217 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9218 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9219
9220 net = get_net_ns_by_fd(fd);
9221 } else {
9222 return -EINVAL;
9223 }
9224
9225 if (IS_ERR(net))
9226 return PTR_ERR(net);
9227
9228 err = 0;
9229
9230 /* check if anything to do */
9231 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9232 err = cfg80211_switch_netns(rdev, net);
9233
9234 put_net(net);
9235 return err;
9236 }
9237
9238 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9239 {
9240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9241 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9242 struct cfg80211_pmksa *pmksa) = NULL;
9243 struct net_device *dev = info->user_ptr[1];
9244 struct cfg80211_pmksa pmksa;
9245
9246 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9247
9248 if (!info->attrs[NL80211_ATTR_PMKID])
9249 return -EINVAL;
9250
9251 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9252
9253 if (info->attrs[NL80211_ATTR_MAC]) {
9254 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9255 } else if (info->attrs[NL80211_ATTR_SSID] &&
9256 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9257 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9258 info->attrs[NL80211_ATTR_PMK])) {
9259 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9260 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9261 pmksa.cache_id =
9262 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9263 } else {
9264 return -EINVAL;
9265 }
9266 if (info->attrs[NL80211_ATTR_PMK]) {
9267 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9268 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9269 }
9270
9271 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9272 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9273 return -EOPNOTSUPP;
9274
9275 switch (info->genlhdr->cmd) {
9276 case NL80211_CMD_SET_PMKSA:
9277 rdev_ops = rdev->ops->set_pmksa;
9278 break;
9279 case NL80211_CMD_DEL_PMKSA:
9280 rdev_ops = rdev->ops->del_pmksa;
9281 break;
9282 default:
9283 WARN_ON(1);
9284 break;
9285 }
9286
9287 if (!rdev_ops)
9288 return -EOPNOTSUPP;
9289
9290 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9291 }
9292
9293 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9294 {
9295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9296 struct net_device *dev = info->user_ptr[1];
9297
9298 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9299 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9300 return -EOPNOTSUPP;
9301
9302 if (!rdev->ops->flush_pmksa)
9303 return -EOPNOTSUPP;
9304
9305 return rdev_flush_pmksa(rdev, dev);
9306 }
9307
9308 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9309 {
9310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9311 struct net_device *dev = info->user_ptr[1];
9312 u8 action_code, dialog_token;
9313 u32 peer_capability = 0;
9314 u16 status_code;
9315 u8 *peer;
9316 bool initiator;
9317
9318 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9319 !rdev->ops->tdls_mgmt)
9320 return -EOPNOTSUPP;
9321
9322 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9323 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9324 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9325 !info->attrs[NL80211_ATTR_IE] ||
9326 !info->attrs[NL80211_ATTR_MAC])
9327 return -EINVAL;
9328
9329 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9330 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9331 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9332 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9333 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9334 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9335 peer_capability =
9336 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9337
9338 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9339 dialog_token, status_code, peer_capability,
9340 initiator,
9341 nla_data(info->attrs[NL80211_ATTR_IE]),
9342 nla_len(info->attrs[NL80211_ATTR_IE]));
9343 }
9344
9345 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9346 {
9347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9348 struct net_device *dev = info->user_ptr[1];
9349 enum nl80211_tdls_operation operation;
9350 u8 *peer;
9351
9352 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9353 !rdev->ops->tdls_oper)
9354 return -EOPNOTSUPP;
9355
9356 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9357 !info->attrs[NL80211_ATTR_MAC])
9358 return -EINVAL;
9359
9360 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9361 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9362
9363 return rdev_tdls_oper(rdev, dev, peer, operation);
9364 }
9365
9366 static int nl80211_remain_on_channel(struct sk_buff *skb,
9367 struct genl_info *info)
9368 {
9369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9370 struct wireless_dev *wdev = info->user_ptr[1];
9371 struct cfg80211_chan_def chandef;
9372 const struct cfg80211_chan_def *compat_chandef;
9373 struct sk_buff *msg;
9374 void *hdr;
9375 u64 cookie;
9376 u32 duration;
9377 int err;
9378
9379 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9380 !info->attrs[NL80211_ATTR_DURATION])
9381 return -EINVAL;
9382
9383 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9384
9385 if (!rdev->ops->remain_on_channel ||
9386 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9387 return -EOPNOTSUPP;
9388
9389 /*
9390 * We should be on that channel for at least a minimum amount of
9391 * time (10ms) but no longer than the driver supports.
9392 */
9393 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9394 duration > rdev->wiphy.max_remain_on_channel_duration)
9395 return -EINVAL;
9396
9397 err = nl80211_parse_chandef(rdev, info, &chandef);
9398 if (err)
9399 return err;
9400
9401 wdev_lock(wdev);
9402 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9403 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9404 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9405 &chandef);
9406 if (compat_chandef != &chandef) {
9407 wdev_unlock(wdev);
9408 return -EBUSY;
9409 }
9410 }
9411 wdev_unlock(wdev);
9412
9413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9414 if (!msg)
9415 return -ENOMEM;
9416
9417 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9418 NL80211_CMD_REMAIN_ON_CHANNEL);
9419 if (!hdr) {
9420 err = -ENOBUFS;
9421 goto free_msg;
9422 }
9423
9424 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9425 duration, &cookie);
9426
9427 if (err)
9428 goto free_msg;
9429
9430 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9431 NL80211_ATTR_PAD))
9432 goto nla_put_failure;
9433
9434 genlmsg_end(msg, hdr);
9435
9436 return genlmsg_reply(msg, info);
9437
9438 nla_put_failure:
9439 err = -ENOBUFS;
9440 free_msg:
9441 nlmsg_free(msg);
9442 return err;
9443 }
9444
9445 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9446 struct genl_info *info)
9447 {
9448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9449 struct wireless_dev *wdev = info->user_ptr[1];
9450 u64 cookie;
9451
9452 if (!info->attrs[NL80211_ATTR_COOKIE])
9453 return -EINVAL;
9454
9455 if (!rdev->ops->cancel_remain_on_channel)
9456 return -EOPNOTSUPP;
9457
9458 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9459
9460 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9461 }
9462
9463 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9464 struct genl_info *info)
9465 {
9466 struct cfg80211_bitrate_mask mask;
9467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9468 struct net_device *dev = info->user_ptr[1];
9469 int err;
9470
9471 if (!rdev->ops->set_bitrate_mask)
9472 return -EOPNOTSUPP;
9473
9474 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9475 if (err)
9476 return err;
9477
9478 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9479 }
9480
9481 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9482 {
9483 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9484 struct wireless_dev *wdev = info->user_ptr[1];
9485 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9486
9487 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9488 return -EINVAL;
9489
9490 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9491 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9492
9493 switch (wdev->iftype) {
9494 case NL80211_IFTYPE_STATION:
9495 case NL80211_IFTYPE_ADHOC:
9496 case NL80211_IFTYPE_P2P_CLIENT:
9497 case NL80211_IFTYPE_AP:
9498 case NL80211_IFTYPE_AP_VLAN:
9499 case NL80211_IFTYPE_MESH_POINT:
9500 case NL80211_IFTYPE_P2P_GO:
9501 case NL80211_IFTYPE_P2P_DEVICE:
9502 break;
9503 case NL80211_IFTYPE_NAN:
9504 default:
9505 return -EOPNOTSUPP;
9506 }
9507
9508 /* not much point in registering if we can't reply */
9509 if (!rdev->ops->mgmt_tx)
9510 return -EOPNOTSUPP;
9511
9512 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9513 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9514 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9515 }
9516
9517 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9518 {
9519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9520 struct wireless_dev *wdev = info->user_ptr[1];
9521 struct cfg80211_chan_def chandef;
9522 int err;
9523 void *hdr = NULL;
9524 u64 cookie;
9525 struct sk_buff *msg = NULL;
9526 struct cfg80211_mgmt_tx_params params = {
9527 .dont_wait_for_ack =
9528 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9529 };
9530
9531 if (!info->attrs[NL80211_ATTR_FRAME])
9532 return -EINVAL;
9533
9534 if (!rdev->ops->mgmt_tx)
9535 return -EOPNOTSUPP;
9536
9537 switch (wdev->iftype) {
9538 case NL80211_IFTYPE_P2P_DEVICE:
9539 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9540 return -EINVAL;
9541 case NL80211_IFTYPE_STATION:
9542 case NL80211_IFTYPE_ADHOC:
9543 case NL80211_IFTYPE_P2P_CLIENT:
9544 case NL80211_IFTYPE_AP:
9545 case NL80211_IFTYPE_AP_VLAN:
9546 case NL80211_IFTYPE_MESH_POINT:
9547 case NL80211_IFTYPE_P2P_GO:
9548 break;
9549 case NL80211_IFTYPE_NAN:
9550 default:
9551 return -EOPNOTSUPP;
9552 }
9553
9554 if (info->attrs[NL80211_ATTR_DURATION]) {
9555 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9556 return -EINVAL;
9557 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9558
9559 /*
9560 * We should wait on the channel for at least a minimum amount
9561 * of time (10ms) but no longer than the driver supports.
9562 */
9563 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9564 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9565 return -EINVAL;
9566 }
9567
9568 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9569
9570 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9571 return -EINVAL;
9572
9573 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9574
9575 /* get the channel if any has been specified, otherwise pass NULL to
9576 * the driver. The latter will use the current one
9577 */
9578 chandef.chan = NULL;
9579 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9580 err = nl80211_parse_chandef(rdev, info, &chandef);
9581 if (err)
9582 return err;
9583 }
9584
9585 if (!chandef.chan && params.offchan)
9586 return -EINVAL;
9587
9588 wdev_lock(wdev);
9589 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9590 wdev_unlock(wdev);
9591 return -EBUSY;
9592 }
9593 wdev_unlock(wdev);
9594
9595 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9596 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9597
9598 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9599 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9600 int i;
9601
9602 if (len % sizeof(u16))
9603 return -EINVAL;
9604
9605 params.n_csa_offsets = len / sizeof(u16);
9606 params.csa_offsets =
9607 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9608
9609 /* check that all the offsets fit the frame */
9610 for (i = 0; i < params.n_csa_offsets; i++) {
9611 if (params.csa_offsets[i] >= params.len)
9612 return -EINVAL;
9613 }
9614 }
9615
9616 if (!params.dont_wait_for_ack) {
9617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9618 if (!msg)
9619 return -ENOMEM;
9620
9621 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9622 NL80211_CMD_FRAME);
9623 if (!hdr) {
9624 err = -ENOBUFS;
9625 goto free_msg;
9626 }
9627 }
9628
9629 params.chan = chandef.chan;
9630 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9631 if (err)
9632 goto free_msg;
9633
9634 if (msg) {
9635 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9636 NL80211_ATTR_PAD))
9637 goto nla_put_failure;
9638
9639 genlmsg_end(msg, hdr);
9640 return genlmsg_reply(msg, info);
9641 }
9642
9643 return 0;
9644
9645 nla_put_failure:
9646 err = -ENOBUFS;
9647 free_msg:
9648 nlmsg_free(msg);
9649 return err;
9650 }
9651
9652 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9653 {
9654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9655 struct wireless_dev *wdev = info->user_ptr[1];
9656 u64 cookie;
9657
9658 if (!info->attrs[NL80211_ATTR_COOKIE])
9659 return -EINVAL;
9660
9661 if (!rdev->ops->mgmt_tx_cancel_wait)
9662 return -EOPNOTSUPP;
9663
9664 switch (wdev->iftype) {
9665 case NL80211_IFTYPE_STATION:
9666 case NL80211_IFTYPE_ADHOC:
9667 case NL80211_IFTYPE_P2P_CLIENT:
9668 case NL80211_IFTYPE_AP:
9669 case NL80211_IFTYPE_AP_VLAN:
9670 case NL80211_IFTYPE_P2P_GO:
9671 case NL80211_IFTYPE_P2P_DEVICE:
9672 break;
9673 case NL80211_IFTYPE_NAN:
9674 default:
9675 return -EOPNOTSUPP;
9676 }
9677
9678 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9679
9680 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9681 }
9682
9683 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9684 {
9685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9686 struct wireless_dev *wdev;
9687 struct net_device *dev = info->user_ptr[1];
9688 u8 ps_state;
9689 bool state;
9690 int err;
9691
9692 if (!info->attrs[NL80211_ATTR_PS_STATE])
9693 return -EINVAL;
9694
9695 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9696
9697 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9698 return -EINVAL;
9699
9700 wdev = dev->ieee80211_ptr;
9701
9702 if (!rdev->ops->set_power_mgmt)
9703 return -EOPNOTSUPP;
9704
9705 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9706
9707 if (state == wdev->ps)
9708 return 0;
9709
9710 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9711 if (!err)
9712 wdev->ps = state;
9713 return err;
9714 }
9715
9716 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9717 {
9718 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9719 enum nl80211_ps_state ps_state;
9720 struct wireless_dev *wdev;
9721 struct net_device *dev = info->user_ptr[1];
9722 struct sk_buff *msg;
9723 void *hdr;
9724 int err;
9725
9726 wdev = dev->ieee80211_ptr;
9727
9728 if (!rdev->ops->set_power_mgmt)
9729 return -EOPNOTSUPP;
9730
9731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9732 if (!msg)
9733 return -ENOMEM;
9734
9735 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9736 NL80211_CMD_GET_POWER_SAVE);
9737 if (!hdr) {
9738 err = -ENOBUFS;
9739 goto free_msg;
9740 }
9741
9742 if (wdev->ps)
9743 ps_state = NL80211_PS_ENABLED;
9744 else
9745 ps_state = NL80211_PS_DISABLED;
9746
9747 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9748 goto nla_put_failure;
9749
9750 genlmsg_end(msg, hdr);
9751 return genlmsg_reply(msg, info);
9752
9753 nla_put_failure:
9754 err = -ENOBUFS;
9755 free_msg:
9756 nlmsg_free(msg);
9757 return err;
9758 }
9759
9760 static const struct nla_policy
9761 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9762 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9763 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9764 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9765 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9766 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9767 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9768 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9769 };
9770
9771 static int nl80211_set_cqm_txe(struct genl_info *info,
9772 u32 rate, u32 pkts, u32 intvl)
9773 {
9774 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9775 struct net_device *dev = info->user_ptr[1];
9776 struct wireless_dev *wdev = dev->ieee80211_ptr;
9777
9778 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9779 return -EINVAL;
9780
9781 if (!rdev->ops->set_cqm_txe_config)
9782 return -EOPNOTSUPP;
9783
9784 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9785 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9786 return -EOPNOTSUPP;
9787
9788 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9789 }
9790
9791 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9792 struct net_device *dev)
9793 {
9794 struct wireless_dev *wdev = dev->ieee80211_ptr;
9795 s32 last, low, high;
9796 u32 hyst;
9797 int i, n;
9798 int err;
9799
9800 /* RSSI reporting disabled? */
9801 if (!wdev->cqm_config)
9802 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9803
9804 /*
9805 * Obtain current RSSI value if possible, if not and no RSSI threshold
9806 * event has been received yet, we should receive an event after a
9807 * connection is established and enough beacons received to calculate
9808 * the average.
9809 */
9810 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9811 rdev->ops->get_station) {
9812 struct station_info sinfo = {};
9813 u8 *mac_addr;
9814
9815 mac_addr = wdev->current_bss->pub.bssid;
9816
9817 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9818 if (err)
9819 return err;
9820
9821 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9822 wdev->cqm_config->last_rssi_event_value =
9823 (s8) sinfo.rx_beacon_signal_avg;
9824 }
9825
9826 last = wdev->cqm_config->last_rssi_event_value;
9827 hyst = wdev->cqm_config->rssi_hyst;
9828 n = wdev->cqm_config->n_rssi_thresholds;
9829
9830 for (i = 0; i < n; i++)
9831 if (last < wdev->cqm_config->rssi_thresholds[i])
9832 break;
9833
9834 low = i > 0 ?
9835 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9836 high = i < n ?
9837 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9838
9839 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9840 }
9841
9842 static int nl80211_set_cqm_rssi(struct genl_info *info,
9843 const s32 *thresholds, int n_thresholds,
9844 u32 hysteresis)
9845 {
9846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9847 struct net_device *dev = info->user_ptr[1];
9848 struct wireless_dev *wdev = dev->ieee80211_ptr;
9849 int i, err;
9850 s32 prev = S32_MIN;
9851
9852 /* Check all values negative and sorted */
9853 for (i = 0; i < n_thresholds; i++) {
9854 if (thresholds[i] > 0 || thresholds[i] <= prev)
9855 return -EINVAL;
9856
9857 prev = thresholds[i];
9858 }
9859
9860 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9861 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9862 return -EOPNOTSUPP;
9863
9864 wdev_lock(wdev);
9865 cfg80211_cqm_config_free(wdev);
9866 wdev_unlock(wdev);
9867
9868 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9869 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9870 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9871
9872 return rdev_set_cqm_rssi_config(rdev, dev,
9873 thresholds[0], hysteresis);
9874 }
9875
9876 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9877 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9878 return -EOPNOTSUPP;
9879
9880 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9881 n_thresholds = 0;
9882
9883 wdev_lock(wdev);
9884 if (n_thresholds) {
9885 struct cfg80211_cqm_config *cqm_config;
9886
9887 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9888 n_thresholds * sizeof(s32), GFP_KERNEL);
9889 if (!cqm_config) {
9890 err = -ENOMEM;
9891 goto unlock;
9892 }
9893
9894 cqm_config->rssi_hyst = hysteresis;
9895 cqm_config->n_rssi_thresholds = n_thresholds;
9896 memcpy(cqm_config->rssi_thresholds, thresholds,
9897 n_thresholds * sizeof(s32));
9898
9899 wdev->cqm_config = cqm_config;
9900 }
9901
9902 err = cfg80211_cqm_rssi_update(rdev, dev);
9903
9904 unlock:
9905 wdev_unlock(wdev);
9906
9907 return err;
9908 }
9909
9910 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9911 {
9912 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9913 struct nlattr *cqm;
9914 int err;
9915
9916 cqm = info->attrs[NL80211_ATTR_CQM];
9917 if (!cqm)
9918 return -EINVAL;
9919
9920 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9921 nl80211_attr_cqm_policy, info->extack);
9922 if (err)
9923 return err;
9924
9925 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9926 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9927 const s32 *thresholds =
9928 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9929 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9930 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9931
9932 if (len % 4)
9933 return -EINVAL;
9934
9935 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9936 hysteresis);
9937 }
9938
9939 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9940 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9941 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9942 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9943 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9944 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9945
9946 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9947 }
9948
9949 return -EINVAL;
9950 }
9951
9952 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9953 {
9954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9955 struct net_device *dev = info->user_ptr[1];
9956 struct ocb_setup setup = {};
9957 int err;
9958
9959 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9960 if (err)
9961 return err;
9962
9963 return cfg80211_join_ocb(rdev, dev, &setup);
9964 }
9965
9966 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9967 {
9968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9969 struct net_device *dev = info->user_ptr[1];
9970
9971 return cfg80211_leave_ocb(rdev, dev);
9972 }
9973
9974 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9975 {
9976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9977 struct net_device *dev = info->user_ptr[1];
9978 struct mesh_config cfg;
9979 struct mesh_setup setup;
9980 int err;
9981
9982 /* start with default */
9983 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9984 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9985
9986 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9987 /* and parse parameters if given */
9988 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9989 if (err)
9990 return err;
9991 }
9992
9993 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9994 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9995 return -EINVAL;
9996
9997 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9998 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9999
10000 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10001 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10002 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10003 return -EINVAL;
10004
10005 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10006 setup.beacon_interval =
10007 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10008
10009 err = cfg80211_validate_beacon_int(rdev,
10010 NL80211_IFTYPE_MESH_POINT,
10011 setup.beacon_interval);
10012 if (err)
10013 return err;
10014 }
10015
10016 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10017 setup.dtim_period =
10018 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10019 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10020 return -EINVAL;
10021 }
10022
10023 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10024 /* parse additional setup parameters if given */
10025 err = nl80211_parse_mesh_setup(info, &setup);
10026 if (err)
10027 return err;
10028 }
10029
10030 if (setup.user_mpm)
10031 cfg.auto_open_plinks = false;
10032
10033 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10034 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10035 if (err)
10036 return err;
10037 } else {
10038 /* cfg80211_join_mesh() will sort it out */
10039 setup.chandef.chan = NULL;
10040 }
10041
10042 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10043 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10044 int n_rates =
10045 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10046 struct ieee80211_supported_band *sband;
10047
10048 if (!setup.chandef.chan)
10049 return -EINVAL;
10050
10051 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10052
10053 err = ieee80211_get_ratemask(sband, rates, n_rates,
10054 &setup.basic_rates);
10055 if (err)
10056 return err;
10057 }
10058
10059 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10060 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10061 if (err)
10062 return err;
10063
10064 if (!setup.chandef.chan)
10065 return -EINVAL;
10066
10067 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10068 &setup.beacon_rate);
10069 if (err)
10070 return err;
10071 }
10072
10073 setup.userspace_handles_dfs =
10074 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10075
10076 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10077 }
10078
10079 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10080 {
10081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10082 struct net_device *dev = info->user_ptr[1];
10083
10084 return cfg80211_leave_mesh(rdev, dev);
10085 }
10086
10087 #ifdef CONFIG_PM
10088 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10089 struct cfg80211_registered_device *rdev)
10090 {
10091 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10092 struct nlattr *nl_pats, *nl_pat;
10093 int i, pat_len;
10094
10095 if (!wowlan->n_patterns)
10096 return 0;
10097
10098 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10099 if (!nl_pats)
10100 return -ENOBUFS;
10101
10102 for (i = 0; i < wowlan->n_patterns; i++) {
10103 nl_pat = nla_nest_start(msg, i + 1);
10104 if (!nl_pat)
10105 return -ENOBUFS;
10106 pat_len = wowlan->patterns[i].pattern_len;
10107 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10108 wowlan->patterns[i].mask) ||
10109 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10110 wowlan->patterns[i].pattern) ||
10111 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10112 wowlan->patterns[i].pkt_offset))
10113 return -ENOBUFS;
10114 nla_nest_end(msg, nl_pat);
10115 }
10116 nla_nest_end(msg, nl_pats);
10117
10118 return 0;
10119 }
10120
10121 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10122 struct cfg80211_wowlan_tcp *tcp)
10123 {
10124 struct nlattr *nl_tcp;
10125
10126 if (!tcp)
10127 return 0;
10128
10129 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10130 if (!nl_tcp)
10131 return -ENOBUFS;
10132
10133 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10134 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10135 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10136 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10137 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10138 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10139 tcp->payload_len, tcp->payload) ||
10140 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10141 tcp->data_interval) ||
10142 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10143 tcp->wake_len, tcp->wake_data) ||
10144 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10145 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10146 return -ENOBUFS;
10147
10148 if (tcp->payload_seq.len &&
10149 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10150 sizeof(tcp->payload_seq), &tcp->payload_seq))
10151 return -ENOBUFS;
10152
10153 if (tcp->payload_tok.len &&
10154 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10155 sizeof(tcp->payload_tok) + tcp->tokens_size,
10156 &tcp->payload_tok))
10157 return -ENOBUFS;
10158
10159 nla_nest_end(msg, nl_tcp);
10160
10161 return 0;
10162 }
10163
10164 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10165 struct cfg80211_sched_scan_request *req)
10166 {
10167 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10168 int i;
10169
10170 if (!req)
10171 return 0;
10172
10173 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10174 if (!nd)
10175 return -ENOBUFS;
10176
10177 if (req->n_scan_plans == 1 &&
10178 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10179 req->scan_plans[0].interval * 1000))
10180 return -ENOBUFS;
10181
10182 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10183 return -ENOBUFS;
10184
10185 if (req->relative_rssi_set) {
10186 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10187
10188 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10189 req->relative_rssi))
10190 return -ENOBUFS;
10191
10192 rssi_adjust.band = req->rssi_adjust.band;
10193 rssi_adjust.delta = req->rssi_adjust.delta;
10194 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10195 sizeof(rssi_adjust), &rssi_adjust))
10196 return -ENOBUFS;
10197 }
10198
10199 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10200 if (!freqs)
10201 return -ENOBUFS;
10202
10203 for (i = 0; i < req->n_channels; i++) {
10204 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10205 return -ENOBUFS;
10206 }
10207
10208 nla_nest_end(msg, freqs);
10209
10210 if (req->n_match_sets) {
10211 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10212 if (!matches)
10213 return -ENOBUFS;
10214
10215 for (i = 0; i < req->n_match_sets; i++) {
10216 match = nla_nest_start(msg, i);
10217 if (!match)
10218 return -ENOBUFS;
10219
10220 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10221 req->match_sets[i].ssid.ssid_len,
10222 req->match_sets[i].ssid.ssid))
10223 return -ENOBUFS;
10224 nla_nest_end(msg, match);
10225 }
10226 nla_nest_end(msg, matches);
10227 }
10228
10229 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10230 if (!scan_plans)
10231 return -ENOBUFS;
10232
10233 for (i = 0; i < req->n_scan_plans; i++) {
10234 scan_plan = nla_nest_start(msg, i + 1);
10235 if (!scan_plan)
10236 return -ENOBUFS;
10237
10238 if (!scan_plan ||
10239 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10240 req->scan_plans[i].interval) ||
10241 (req->scan_plans[i].iterations &&
10242 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10243 req->scan_plans[i].iterations)))
10244 return -ENOBUFS;
10245 nla_nest_end(msg, scan_plan);
10246 }
10247 nla_nest_end(msg, scan_plans);
10248
10249 nla_nest_end(msg, nd);
10250
10251 return 0;
10252 }
10253
10254 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10255 {
10256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10257 struct sk_buff *msg;
10258 void *hdr;
10259 u32 size = NLMSG_DEFAULT_SIZE;
10260
10261 if (!rdev->wiphy.wowlan)
10262 return -EOPNOTSUPP;
10263
10264 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10265 /* adjust size to have room for all the data */
10266 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10267 rdev->wiphy.wowlan_config->tcp->payload_len +
10268 rdev->wiphy.wowlan_config->tcp->wake_len +
10269 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10270 }
10271
10272 msg = nlmsg_new(size, GFP_KERNEL);
10273 if (!msg)
10274 return -ENOMEM;
10275
10276 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10277 NL80211_CMD_GET_WOWLAN);
10278 if (!hdr)
10279 goto nla_put_failure;
10280
10281 if (rdev->wiphy.wowlan_config) {
10282 struct nlattr *nl_wowlan;
10283
10284 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10285 if (!nl_wowlan)
10286 goto nla_put_failure;
10287
10288 if ((rdev->wiphy.wowlan_config->any &&
10289 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10290 (rdev->wiphy.wowlan_config->disconnect &&
10291 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10292 (rdev->wiphy.wowlan_config->magic_pkt &&
10293 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10294 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10295 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10296 (rdev->wiphy.wowlan_config->eap_identity_req &&
10297 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10298 (rdev->wiphy.wowlan_config->four_way_handshake &&
10299 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10300 (rdev->wiphy.wowlan_config->rfkill_release &&
10301 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10302 goto nla_put_failure;
10303
10304 if (nl80211_send_wowlan_patterns(msg, rdev))
10305 goto nla_put_failure;
10306
10307 if (nl80211_send_wowlan_tcp(msg,
10308 rdev->wiphy.wowlan_config->tcp))
10309 goto nla_put_failure;
10310
10311 if (nl80211_send_wowlan_nd(
10312 msg,
10313 rdev->wiphy.wowlan_config->nd_config))
10314 goto nla_put_failure;
10315
10316 nla_nest_end(msg, nl_wowlan);
10317 }
10318
10319 genlmsg_end(msg, hdr);
10320 return genlmsg_reply(msg, info);
10321
10322 nla_put_failure:
10323 nlmsg_free(msg);
10324 return -ENOBUFS;
10325 }
10326
10327 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10328 struct nlattr *attr,
10329 struct cfg80211_wowlan *trig)
10330 {
10331 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10332 struct cfg80211_wowlan_tcp *cfg;
10333 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10334 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10335 u32 size;
10336 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10337 int err, port;
10338
10339 if (!rdev->wiphy.wowlan->tcp)
10340 return -EINVAL;
10341
10342 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10343 nl80211_wowlan_tcp_policy, NULL);
10344 if (err)
10345 return err;
10346
10347 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10348 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10349 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10350 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10351 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10352 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10353 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10354 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10355 return -EINVAL;
10356
10357 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10358 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10359 return -EINVAL;
10360
10361 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10362 rdev->wiphy.wowlan->tcp->data_interval_max ||
10363 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10364 return -EINVAL;
10365
10366 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10367 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10368 return -EINVAL;
10369
10370 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10371 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10372 return -EINVAL;
10373
10374 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10375 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10376
10377 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10378 tokens_size = tokln - sizeof(*tok);
10379
10380 if (!tok->len || tokens_size % tok->len)
10381 return -EINVAL;
10382 if (!rdev->wiphy.wowlan->tcp->tok)
10383 return -EINVAL;
10384 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10385 return -EINVAL;
10386 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10387 return -EINVAL;
10388 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10389 return -EINVAL;
10390 if (tok->offset + tok->len > data_size)
10391 return -EINVAL;
10392 }
10393
10394 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10395 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10396 if (!rdev->wiphy.wowlan->tcp->seq)
10397 return -EINVAL;
10398 if (seq->len == 0 || seq->len > 4)
10399 return -EINVAL;
10400 if (seq->len + seq->offset > data_size)
10401 return -EINVAL;
10402 }
10403
10404 size = sizeof(*cfg);
10405 size += data_size;
10406 size += wake_size + wake_mask_size;
10407 size += tokens_size;
10408
10409 cfg = kzalloc(size, GFP_KERNEL);
10410 if (!cfg)
10411 return -ENOMEM;
10412 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10413 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10414 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10415 ETH_ALEN);
10416 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10417 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10418 else
10419 port = 0;
10420 #ifdef CONFIG_INET
10421 /* allocate a socket and port for it and use it */
10422 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10423 IPPROTO_TCP, &cfg->sock, 1);
10424 if (err) {
10425 kfree(cfg);
10426 return err;
10427 }
10428 if (inet_csk_get_port(cfg->sock->sk, port)) {
10429 sock_release(cfg->sock);
10430 kfree(cfg);
10431 return -EADDRINUSE;
10432 }
10433 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10434 #else
10435 if (!port) {
10436 kfree(cfg);
10437 return -EINVAL;
10438 }
10439 cfg->src_port = port;
10440 #endif
10441
10442 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10443 cfg->payload_len = data_size;
10444 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10445 memcpy((void *)cfg->payload,
10446 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10447 data_size);
10448 if (seq)
10449 cfg->payload_seq = *seq;
10450 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10451 cfg->wake_len = wake_size;
10452 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10453 memcpy((void *)cfg->wake_data,
10454 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10455 wake_size);
10456 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10457 data_size + wake_size;
10458 memcpy((void *)cfg->wake_mask,
10459 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10460 wake_mask_size);
10461 if (tok) {
10462 cfg->tokens_size = tokens_size;
10463 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10464 }
10465
10466 trig->tcp = cfg;
10467
10468 return 0;
10469 }
10470
10471 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10472 const struct wiphy_wowlan_support *wowlan,
10473 struct nlattr *attr,
10474 struct cfg80211_wowlan *trig)
10475 {
10476 struct nlattr **tb;
10477 int err;
10478
10479 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10480 if (!tb)
10481 return -ENOMEM;
10482
10483 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10484 err = -EOPNOTSUPP;
10485 goto out;
10486 }
10487
10488 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10489 NULL);
10490 if (err)
10491 goto out;
10492
10493 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10494 wowlan->max_nd_match_sets);
10495 err = PTR_ERR_OR_ZERO(trig->nd_config);
10496 if (err)
10497 trig->nd_config = NULL;
10498
10499 out:
10500 kfree(tb);
10501 return err;
10502 }
10503
10504 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10505 {
10506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10507 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10508 struct cfg80211_wowlan new_triggers = {};
10509 struct cfg80211_wowlan *ntrig;
10510 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10511 int err, i;
10512 bool prev_enabled = rdev->wiphy.wowlan_config;
10513 bool regular = false;
10514
10515 if (!wowlan)
10516 return -EOPNOTSUPP;
10517
10518 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10519 cfg80211_rdev_free_wowlan(rdev);
10520 rdev->wiphy.wowlan_config = NULL;
10521 goto set_wakeup;
10522 }
10523
10524 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10525 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10526 nl80211_wowlan_policy, info->extack);
10527 if (err)
10528 return err;
10529
10530 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10531 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10532 return -EINVAL;
10533 new_triggers.any = true;
10534 }
10535
10536 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10537 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10538 return -EINVAL;
10539 new_triggers.disconnect = true;
10540 regular = true;
10541 }
10542
10543 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10544 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10545 return -EINVAL;
10546 new_triggers.magic_pkt = true;
10547 regular = true;
10548 }
10549
10550 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10551 return -EINVAL;
10552
10553 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10554 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10555 return -EINVAL;
10556 new_triggers.gtk_rekey_failure = true;
10557 regular = true;
10558 }
10559
10560 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10561 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10562 return -EINVAL;
10563 new_triggers.eap_identity_req = true;
10564 regular = true;
10565 }
10566
10567 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10568 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10569 return -EINVAL;
10570 new_triggers.four_way_handshake = true;
10571 regular = true;
10572 }
10573
10574 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10575 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10576 return -EINVAL;
10577 new_triggers.rfkill_release = true;
10578 regular = true;
10579 }
10580
10581 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10582 struct nlattr *pat;
10583 int n_patterns = 0;
10584 int rem, pat_len, mask_len, pkt_offset;
10585 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10586
10587 regular = true;
10588
10589 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10590 rem)
10591 n_patterns++;
10592 if (n_patterns > wowlan->n_patterns)
10593 return -EINVAL;
10594
10595 new_triggers.patterns = kcalloc(n_patterns,
10596 sizeof(new_triggers.patterns[0]),
10597 GFP_KERNEL);
10598 if (!new_triggers.patterns)
10599 return -ENOMEM;
10600
10601 new_triggers.n_patterns = n_patterns;
10602 i = 0;
10603
10604 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10605 rem) {
10606 u8 *mask_pat;
10607
10608 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10609 nl80211_packet_pattern_policy,
10610 info->extack);
10611 err = -EINVAL;
10612 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10613 !pat_tb[NL80211_PKTPAT_PATTERN])
10614 goto error;
10615 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10616 mask_len = DIV_ROUND_UP(pat_len, 8);
10617 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10618 goto error;
10619 if (pat_len > wowlan->pattern_max_len ||
10620 pat_len < wowlan->pattern_min_len)
10621 goto error;
10622
10623 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10624 pkt_offset = 0;
10625 else
10626 pkt_offset = nla_get_u32(
10627 pat_tb[NL80211_PKTPAT_OFFSET]);
10628 if (pkt_offset > wowlan->max_pkt_offset)
10629 goto error;
10630 new_triggers.patterns[i].pkt_offset = pkt_offset;
10631
10632 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10633 if (!mask_pat) {
10634 err = -ENOMEM;
10635 goto error;
10636 }
10637 new_triggers.patterns[i].mask = mask_pat;
10638 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10639 mask_len);
10640 mask_pat += mask_len;
10641 new_triggers.patterns[i].pattern = mask_pat;
10642 new_triggers.patterns[i].pattern_len = pat_len;
10643 memcpy(mask_pat,
10644 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10645 pat_len);
10646 i++;
10647 }
10648 }
10649
10650 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10651 regular = true;
10652 err = nl80211_parse_wowlan_tcp(
10653 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10654 &new_triggers);
10655 if (err)
10656 goto error;
10657 }
10658
10659 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10660 regular = true;
10661 err = nl80211_parse_wowlan_nd(
10662 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10663 &new_triggers);
10664 if (err)
10665 goto error;
10666 }
10667
10668 /* The 'any' trigger means the device continues operating more or less
10669 * as in its normal operation mode and wakes up the host on most of the
10670 * normal interrupts (like packet RX, ...)
10671 * It therefore makes little sense to combine with the more constrained
10672 * wakeup trigger modes.
10673 */
10674 if (new_triggers.any && regular) {
10675 err = -EINVAL;
10676 goto error;
10677 }
10678
10679 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10680 if (!ntrig) {
10681 err = -ENOMEM;
10682 goto error;
10683 }
10684 cfg80211_rdev_free_wowlan(rdev);
10685 rdev->wiphy.wowlan_config = ntrig;
10686
10687 set_wakeup:
10688 if (rdev->ops->set_wakeup &&
10689 prev_enabled != !!rdev->wiphy.wowlan_config)
10690 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10691
10692 return 0;
10693 error:
10694 for (i = 0; i < new_triggers.n_patterns; i++)
10695 kfree(new_triggers.patterns[i].mask);
10696 kfree(new_triggers.patterns);
10697 if (new_triggers.tcp && new_triggers.tcp->sock)
10698 sock_release(new_triggers.tcp->sock);
10699 kfree(new_triggers.tcp);
10700 kfree(new_triggers.nd_config);
10701 return err;
10702 }
10703 #endif
10704
10705 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10706 struct cfg80211_registered_device *rdev)
10707 {
10708 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10709 int i, j, pat_len;
10710 struct cfg80211_coalesce_rules *rule;
10711
10712 if (!rdev->coalesce->n_rules)
10713 return 0;
10714
10715 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10716 if (!nl_rules)
10717 return -ENOBUFS;
10718
10719 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10720 nl_rule = nla_nest_start(msg, i + 1);
10721 if (!nl_rule)
10722 return -ENOBUFS;
10723
10724 rule = &rdev->coalesce->rules[i];
10725 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10726 rule->delay))
10727 return -ENOBUFS;
10728
10729 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10730 rule->condition))
10731 return -ENOBUFS;
10732
10733 nl_pats = nla_nest_start(msg,
10734 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10735 if (!nl_pats)
10736 return -ENOBUFS;
10737
10738 for (j = 0; j < rule->n_patterns; j++) {
10739 nl_pat = nla_nest_start(msg, j + 1);
10740 if (!nl_pat)
10741 return -ENOBUFS;
10742 pat_len = rule->patterns[j].pattern_len;
10743 if (nla_put(msg, NL80211_PKTPAT_MASK,
10744 DIV_ROUND_UP(pat_len, 8),
10745 rule->patterns[j].mask) ||
10746 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10747 rule->patterns[j].pattern) ||
10748 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10749 rule->patterns[j].pkt_offset))
10750 return -ENOBUFS;
10751 nla_nest_end(msg, nl_pat);
10752 }
10753 nla_nest_end(msg, nl_pats);
10754 nla_nest_end(msg, nl_rule);
10755 }
10756 nla_nest_end(msg, nl_rules);
10757
10758 return 0;
10759 }
10760
10761 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10762 {
10763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10764 struct sk_buff *msg;
10765 void *hdr;
10766
10767 if (!rdev->wiphy.coalesce)
10768 return -EOPNOTSUPP;
10769
10770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10771 if (!msg)
10772 return -ENOMEM;
10773
10774 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10775 NL80211_CMD_GET_COALESCE);
10776 if (!hdr)
10777 goto nla_put_failure;
10778
10779 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10780 goto nla_put_failure;
10781
10782 genlmsg_end(msg, hdr);
10783 return genlmsg_reply(msg, info);
10784
10785 nla_put_failure:
10786 nlmsg_free(msg);
10787 return -ENOBUFS;
10788 }
10789
10790 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10791 {
10792 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10793 int i, j;
10794 struct cfg80211_coalesce_rules *rule;
10795
10796 if (!coalesce)
10797 return;
10798
10799 for (i = 0; i < coalesce->n_rules; i++) {
10800 rule = &coalesce->rules[i];
10801 for (j = 0; j < rule->n_patterns; j++)
10802 kfree(rule->patterns[j].mask);
10803 kfree(rule->patterns);
10804 }
10805 kfree(coalesce->rules);
10806 kfree(coalesce);
10807 rdev->coalesce = NULL;
10808 }
10809
10810 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10811 struct nlattr *rule,
10812 struct cfg80211_coalesce_rules *new_rule)
10813 {
10814 int err, i;
10815 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10816 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10817 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10818 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10819
10820 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10821 nl80211_coalesce_policy, NULL);
10822 if (err)
10823 return err;
10824
10825 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10826 new_rule->delay =
10827 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10828 if (new_rule->delay > coalesce->max_delay)
10829 return -EINVAL;
10830
10831 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10832 new_rule->condition =
10833 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10834 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10835 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10836 return -EINVAL;
10837
10838 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10839 return -EINVAL;
10840
10841 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10842 rem)
10843 n_patterns++;
10844 if (n_patterns > coalesce->n_patterns)
10845 return -EINVAL;
10846
10847 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10848 GFP_KERNEL);
10849 if (!new_rule->patterns)
10850 return -ENOMEM;
10851
10852 new_rule->n_patterns = n_patterns;
10853 i = 0;
10854
10855 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10856 rem) {
10857 u8 *mask_pat;
10858
10859 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10860 nl80211_packet_pattern_policy, NULL);
10861 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10862 !pat_tb[NL80211_PKTPAT_PATTERN])
10863 return -EINVAL;
10864 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10865 mask_len = DIV_ROUND_UP(pat_len, 8);
10866 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10867 return -EINVAL;
10868 if (pat_len > coalesce->pattern_max_len ||
10869 pat_len < coalesce->pattern_min_len)
10870 return -EINVAL;
10871
10872 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10873 pkt_offset = 0;
10874 else
10875 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10876 if (pkt_offset > coalesce->max_pkt_offset)
10877 return -EINVAL;
10878 new_rule->patterns[i].pkt_offset = pkt_offset;
10879
10880 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10881 if (!mask_pat)
10882 return -ENOMEM;
10883
10884 new_rule->patterns[i].mask = mask_pat;
10885 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10886 mask_len);
10887
10888 mask_pat += mask_len;
10889 new_rule->patterns[i].pattern = mask_pat;
10890 new_rule->patterns[i].pattern_len = pat_len;
10891 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10892 pat_len);
10893 i++;
10894 }
10895
10896 return 0;
10897 }
10898
10899 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10900 {
10901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10902 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10903 struct cfg80211_coalesce new_coalesce = {};
10904 struct cfg80211_coalesce *n_coalesce;
10905 int err, rem_rule, n_rules = 0, i, j;
10906 struct nlattr *rule;
10907 struct cfg80211_coalesce_rules *tmp_rule;
10908
10909 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10910 return -EOPNOTSUPP;
10911
10912 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10913 cfg80211_rdev_free_coalesce(rdev);
10914 rdev_set_coalesce(rdev, NULL);
10915 return 0;
10916 }
10917
10918 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10919 rem_rule)
10920 n_rules++;
10921 if (n_rules > coalesce->n_rules)
10922 return -EINVAL;
10923
10924 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10925 GFP_KERNEL);
10926 if (!new_coalesce.rules)
10927 return -ENOMEM;
10928
10929 new_coalesce.n_rules = n_rules;
10930 i = 0;
10931
10932 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10933 rem_rule) {
10934 err = nl80211_parse_coalesce_rule(rdev, rule,
10935 &new_coalesce.rules[i]);
10936 if (err)
10937 goto error;
10938
10939 i++;
10940 }
10941
10942 err = rdev_set_coalesce(rdev, &new_coalesce);
10943 if (err)
10944 goto error;
10945
10946 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10947 if (!n_coalesce) {
10948 err = -ENOMEM;
10949 goto error;
10950 }
10951 cfg80211_rdev_free_coalesce(rdev);
10952 rdev->coalesce = n_coalesce;
10953
10954 return 0;
10955 error:
10956 for (i = 0; i < new_coalesce.n_rules; i++) {
10957 tmp_rule = &new_coalesce.rules[i];
10958 for (j = 0; j < tmp_rule->n_patterns; j++)
10959 kfree(tmp_rule->patterns[j].mask);
10960 kfree(tmp_rule->patterns);
10961 }
10962 kfree(new_coalesce.rules);
10963
10964 return err;
10965 }
10966
10967 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10968 {
10969 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10970 struct net_device *dev = info->user_ptr[1];
10971 struct wireless_dev *wdev = dev->ieee80211_ptr;
10972 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10973 struct cfg80211_gtk_rekey_data rekey_data;
10974 int err;
10975
10976 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10977 return -EINVAL;
10978
10979 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10980 info->attrs[NL80211_ATTR_REKEY_DATA],
10981 nl80211_rekey_policy, info->extack);
10982 if (err)
10983 return err;
10984
10985 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10986 !tb[NL80211_REKEY_DATA_KCK])
10987 return -EINVAL;
10988 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10989 return -ERANGE;
10990 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10991 return -ERANGE;
10992 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10993 return -ERANGE;
10994
10995 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10996 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10997 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10998
10999 wdev_lock(wdev);
11000 if (!wdev->current_bss) {
11001 err = -ENOTCONN;
11002 goto out;
11003 }
11004
11005 if (!rdev->ops->set_rekey_data) {
11006 err = -EOPNOTSUPP;
11007 goto out;
11008 }
11009
11010 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11011 out:
11012 wdev_unlock(wdev);
11013 return err;
11014 }
11015
11016 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11017 struct genl_info *info)
11018 {
11019 struct net_device *dev = info->user_ptr[1];
11020 struct wireless_dev *wdev = dev->ieee80211_ptr;
11021
11022 if (wdev->iftype != NL80211_IFTYPE_AP &&
11023 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11024 return -EINVAL;
11025
11026 if (wdev->ap_unexpected_nlportid)
11027 return -EBUSY;
11028
11029 wdev->ap_unexpected_nlportid = info->snd_portid;
11030 return 0;
11031 }
11032
11033 static int nl80211_probe_client(struct sk_buff *skb,
11034 struct genl_info *info)
11035 {
11036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11037 struct net_device *dev = info->user_ptr[1];
11038 struct wireless_dev *wdev = dev->ieee80211_ptr;
11039 struct sk_buff *msg;
11040 void *hdr;
11041 const u8 *addr;
11042 u64 cookie;
11043 int err;
11044
11045 if (wdev->iftype != NL80211_IFTYPE_AP &&
11046 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11047 return -EOPNOTSUPP;
11048
11049 if (!info->attrs[NL80211_ATTR_MAC])
11050 return -EINVAL;
11051
11052 if (!rdev->ops->probe_client)
11053 return -EOPNOTSUPP;
11054
11055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11056 if (!msg)
11057 return -ENOMEM;
11058
11059 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11060 NL80211_CMD_PROBE_CLIENT);
11061 if (!hdr) {
11062 err = -ENOBUFS;
11063 goto free_msg;
11064 }
11065
11066 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11067
11068 err = rdev_probe_client(rdev, dev, addr, &cookie);
11069 if (err)
11070 goto free_msg;
11071
11072 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11073 NL80211_ATTR_PAD))
11074 goto nla_put_failure;
11075
11076 genlmsg_end(msg, hdr);
11077
11078 return genlmsg_reply(msg, info);
11079
11080 nla_put_failure:
11081 err = -ENOBUFS;
11082 free_msg:
11083 nlmsg_free(msg);
11084 return err;
11085 }
11086
11087 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11088 {
11089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11090 struct cfg80211_beacon_registration *reg, *nreg;
11091 int rv;
11092
11093 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11094 return -EOPNOTSUPP;
11095
11096 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11097 if (!nreg)
11098 return -ENOMEM;
11099
11100 /* First, check if already registered. */
11101 spin_lock_bh(&rdev->beacon_registrations_lock);
11102 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11103 if (reg->nlportid == info->snd_portid) {
11104 rv = -EALREADY;
11105 goto out_err;
11106 }
11107 }
11108 /* Add it to the list */
11109 nreg->nlportid = info->snd_portid;
11110 list_add(&nreg->list, &rdev->beacon_registrations);
11111
11112 spin_unlock_bh(&rdev->beacon_registrations_lock);
11113
11114 return 0;
11115 out_err:
11116 spin_unlock_bh(&rdev->beacon_registrations_lock);
11117 kfree(nreg);
11118 return rv;
11119 }
11120
11121 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11122 {
11123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11124 struct wireless_dev *wdev = info->user_ptr[1];
11125 int err;
11126
11127 if (!rdev->ops->start_p2p_device)
11128 return -EOPNOTSUPP;
11129
11130 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11131 return -EOPNOTSUPP;
11132
11133 if (wdev_running(wdev))
11134 return 0;
11135
11136 if (rfkill_blocked(rdev->rfkill))
11137 return -ERFKILL;
11138
11139 err = rdev_start_p2p_device(rdev, wdev);
11140 if (err)
11141 return err;
11142
11143 wdev->is_running = true;
11144 rdev->opencount++;
11145
11146 return 0;
11147 }
11148
11149 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11150 {
11151 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11152 struct wireless_dev *wdev = info->user_ptr[1];
11153
11154 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11155 return -EOPNOTSUPP;
11156
11157 if (!rdev->ops->stop_p2p_device)
11158 return -EOPNOTSUPP;
11159
11160 cfg80211_stop_p2p_device(rdev, wdev);
11161
11162 return 0;
11163 }
11164
11165 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11166 {
11167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11168 struct wireless_dev *wdev = info->user_ptr[1];
11169 struct cfg80211_nan_conf conf = {};
11170 int err;
11171
11172 if (wdev->iftype != NL80211_IFTYPE_NAN)
11173 return -EOPNOTSUPP;
11174
11175 if (wdev_running(wdev))
11176 return -EEXIST;
11177
11178 if (rfkill_blocked(rdev->rfkill))
11179 return -ERFKILL;
11180
11181 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11182 return -EINVAL;
11183
11184 conf.master_pref =
11185 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11186 if (!conf.master_pref)
11187 return -EINVAL;
11188
11189 if (info->attrs[NL80211_ATTR_BANDS]) {
11190 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11191
11192 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11193 return -EOPNOTSUPP;
11194
11195 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11196 return -EINVAL;
11197
11198 conf.bands = bands;
11199 }
11200
11201 err = rdev_start_nan(rdev, wdev, &conf);
11202 if (err)
11203 return err;
11204
11205 wdev->is_running = true;
11206 rdev->opencount++;
11207
11208 return 0;
11209 }
11210
11211 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11212 {
11213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11214 struct wireless_dev *wdev = info->user_ptr[1];
11215
11216 if (wdev->iftype != NL80211_IFTYPE_NAN)
11217 return -EOPNOTSUPP;
11218
11219 cfg80211_stop_nan(rdev, wdev);
11220
11221 return 0;
11222 }
11223
11224 static int validate_nan_filter(struct nlattr *filter_attr)
11225 {
11226 struct nlattr *attr;
11227 int len = 0, n_entries = 0, rem;
11228
11229 nla_for_each_nested(attr, filter_attr, rem) {
11230 len += nla_len(attr);
11231 n_entries++;
11232 }
11233
11234 if (len >= U8_MAX)
11235 return -EINVAL;
11236
11237 return n_entries;
11238 }
11239
11240 static int handle_nan_filter(struct nlattr *attr_filter,
11241 struct cfg80211_nan_func *func,
11242 bool tx)
11243 {
11244 struct nlattr *attr;
11245 int n_entries, rem, i;
11246 struct cfg80211_nan_func_filter *filter;
11247
11248 n_entries = validate_nan_filter(attr_filter);
11249 if (n_entries < 0)
11250 return n_entries;
11251
11252 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11253
11254 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11255 if (!filter)
11256 return -ENOMEM;
11257
11258 i = 0;
11259 nla_for_each_nested(attr, attr_filter, rem) {
11260 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11261 filter[i].len = nla_len(attr);
11262 i++;
11263 }
11264 if (tx) {
11265 func->num_tx_filters = n_entries;
11266 func->tx_filters = filter;
11267 } else {
11268 func->num_rx_filters = n_entries;
11269 func->rx_filters = filter;
11270 }
11271
11272 return 0;
11273 }
11274
11275 static int nl80211_nan_add_func(struct sk_buff *skb,
11276 struct genl_info *info)
11277 {
11278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11279 struct wireless_dev *wdev = info->user_ptr[1];
11280 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11281 struct cfg80211_nan_func *func;
11282 struct sk_buff *msg = NULL;
11283 void *hdr = NULL;
11284 int err = 0;
11285
11286 if (wdev->iftype != NL80211_IFTYPE_NAN)
11287 return -EOPNOTSUPP;
11288
11289 if (!wdev_running(wdev))
11290 return -ENOTCONN;
11291
11292 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11293 return -EINVAL;
11294
11295 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11296 info->attrs[NL80211_ATTR_NAN_FUNC],
11297 nl80211_nan_func_policy, info->extack);
11298 if (err)
11299 return err;
11300
11301 func = kzalloc(sizeof(*func), GFP_KERNEL);
11302 if (!func)
11303 return -ENOMEM;
11304
11305 func->cookie = wdev->wiphy->cookie_counter++;
11306
11307 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11308 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11309 err = -EINVAL;
11310 goto out;
11311 }
11312
11313
11314 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11315
11316 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11317 err = -EINVAL;
11318 goto out;
11319 }
11320
11321 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11322 sizeof(func->service_id));
11323
11324 func->close_range =
11325 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11326
11327 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11328 func->serv_spec_info_len =
11329 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11330 func->serv_spec_info =
11331 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11332 func->serv_spec_info_len,
11333 GFP_KERNEL);
11334 if (!func->serv_spec_info) {
11335 err = -ENOMEM;
11336 goto out;
11337 }
11338 }
11339
11340 if (tb[NL80211_NAN_FUNC_TTL])
11341 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11342
11343 switch (func->type) {
11344 case NL80211_NAN_FUNC_PUBLISH:
11345 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11346 err = -EINVAL;
11347 goto out;
11348 }
11349
11350 func->publish_type =
11351 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11352 func->publish_bcast =
11353 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11354
11355 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11356 func->publish_bcast) {
11357 err = -EINVAL;
11358 goto out;
11359 }
11360 break;
11361 case NL80211_NAN_FUNC_SUBSCRIBE:
11362 func->subscribe_active =
11363 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11364 break;
11365 case NL80211_NAN_FUNC_FOLLOW_UP:
11366 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11367 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11368 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11369 err = -EINVAL;
11370 goto out;
11371 }
11372
11373 func->followup_id =
11374 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11375 func->followup_reqid =
11376 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11377 memcpy(func->followup_dest.addr,
11378 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11379 sizeof(func->followup_dest.addr));
11380 if (func->ttl) {
11381 err = -EINVAL;
11382 goto out;
11383 }
11384 break;
11385 default:
11386 err = -EINVAL;
11387 goto out;
11388 }
11389
11390 if (tb[NL80211_NAN_FUNC_SRF]) {
11391 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11392
11393 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11394 tb[NL80211_NAN_FUNC_SRF],
11395 nl80211_nan_srf_policy, info->extack);
11396 if (err)
11397 goto out;
11398
11399 func->srf_include =
11400 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11401
11402 if (srf_tb[NL80211_NAN_SRF_BF]) {
11403 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11404 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11405 err = -EINVAL;
11406 goto out;
11407 }
11408
11409 func->srf_bf_len =
11410 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11411 func->srf_bf =
11412 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11413 func->srf_bf_len, GFP_KERNEL);
11414 if (!func->srf_bf) {
11415 err = -ENOMEM;
11416 goto out;
11417 }
11418
11419 func->srf_bf_idx =
11420 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11421 } else {
11422 struct nlattr *attr, *mac_attr =
11423 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11424 int n_entries, rem, i = 0;
11425
11426 if (!mac_attr) {
11427 err = -EINVAL;
11428 goto out;
11429 }
11430
11431 n_entries = validate_acl_mac_addrs(mac_attr);
11432 if (n_entries <= 0) {
11433 err = -EINVAL;
11434 goto out;
11435 }
11436
11437 func->srf_num_macs = n_entries;
11438 func->srf_macs =
11439 kzalloc(sizeof(*func->srf_macs) * n_entries,
11440 GFP_KERNEL);
11441 if (!func->srf_macs) {
11442 err = -ENOMEM;
11443 goto out;
11444 }
11445
11446 nla_for_each_nested(attr, mac_attr, rem)
11447 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11448 sizeof(*func->srf_macs));
11449 }
11450 }
11451
11452 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11453 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11454 func, true);
11455 if (err)
11456 goto out;
11457 }
11458
11459 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11460 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11461 func, false);
11462 if (err)
11463 goto out;
11464 }
11465
11466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11467 if (!msg) {
11468 err = -ENOMEM;
11469 goto out;
11470 }
11471
11472 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11473 NL80211_CMD_ADD_NAN_FUNCTION);
11474 /* This can't really happen - we just allocated 4KB */
11475 if (WARN_ON(!hdr)) {
11476 err = -ENOMEM;
11477 goto out;
11478 }
11479
11480 err = rdev_add_nan_func(rdev, wdev, func);
11481 out:
11482 if (err < 0) {
11483 cfg80211_free_nan_func(func);
11484 nlmsg_free(msg);
11485 return err;
11486 }
11487
11488 /* propagate the instance id and cookie to userspace */
11489 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11490 NL80211_ATTR_PAD))
11491 goto nla_put_failure;
11492
11493 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11494 if (!func_attr)
11495 goto nla_put_failure;
11496
11497 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11498 func->instance_id))
11499 goto nla_put_failure;
11500
11501 nla_nest_end(msg, func_attr);
11502
11503 genlmsg_end(msg, hdr);
11504 return genlmsg_reply(msg, info);
11505
11506 nla_put_failure:
11507 nlmsg_free(msg);
11508 return -ENOBUFS;
11509 }
11510
11511 static int nl80211_nan_del_func(struct sk_buff *skb,
11512 struct genl_info *info)
11513 {
11514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11515 struct wireless_dev *wdev = info->user_ptr[1];
11516 u64 cookie;
11517
11518 if (wdev->iftype != NL80211_IFTYPE_NAN)
11519 return -EOPNOTSUPP;
11520
11521 if (!wdev_running(wdev))
11522 return -ENOTCONN;
11523
11524 if (!info->attrs[NL80211_ATTR_COOKIE])
11525 return -EINVAL;
11526
11527 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11528
11529 rdev_del_nan_func(rdev, wdev, cookie);
11530
11531 return 0;
11532 }
11533
11534 static int nl80211_nan_change_config(struct sk_buff *skb,
11535 struct genl_info *info)
11536 {
11537 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11538 struct wireless_dev *wdev = info->user_ptr[1];
11539 struct cfg80211_nan_conf conf = {};
11540 u32 changed = 0;
11541
11542 if (wdev->iftype != NL80211_IFTYPE_NAN)
11543 return -EOPNOTSUPP;
11544
11545 if (!wdev_running(wdev))
11546 return -ENOTCONN;
11547
11548 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11549 conf.master_pref =
11550 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11551 if (conf.master_pref <= 1 || conf.master_pref == 255)
11552 return -EINVAL;
11553
11554 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11555 }
11556
11557 if (info->attrs[NL80211_ATTR_BANDS]) {
11558 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11559
11560 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11561 return -EOPNOTSUPP;
11562
11563 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11564 return -EINVAL;
11565
11566 conf.bands = bands;
11567 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11568 }
11569
11570 if (!changed)
11571 return -EINVAL;
11572
11573 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11574 }
11575
11576 void cfg80211_nan_match(struct wireless_dev *wdev,
11577 struct cfg80211_nan_match_params *match, gfp_t gfp)
11578 {
11579 struct wiphy *wiphy = wdev->wiphy;
11580 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11581 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11582 struct sk_buff *msg;
11583 void *hdr;
11584
11585 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11586 return;
11587
11588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11589 if (!msg)
11590 return;
11591
11592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11593 if (!hdr) {
11594 nlmsg_free(msg);
11595 return;
11596 }
11597
11598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11599 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11600 wdev->netdev->ifindex)) ||
11601 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11602 NL80211_ATTR_PAD))
11603 goto nla_put_failure;
11604
11605 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11606 NL80211_ATTR_PAD) ||
11607 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11608 goto nla_put_failure;
11609
11610 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11611 if (!match_attr)
11612 goto nla_put_failure;
11613
11614 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11615 if (!local_func_attr)
11616 goto nla_put_failure;
11617
11618 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11619 goto nla_put_failure;
11620
11621 nla_nest_end(msg, local_func_attr);
11622
11623 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11624 if (!peer_func_attr)
11625 goto nla_put_failure;
11626
11627 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11628 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11629 goto nla_put_failure;
11630
11631 if (match->info && match->info_len &&
11632 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11633 match->info))
11634 goto nla_put_failure;
11635
11636 nla_nest_end(msg, peer_func_attr);
11637 nla_nest_end(msg, match_attr);
11638 genlmsg_end(msg, hdr);
11639
11640 if (!wdev->owner_nlportid)
11641 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11642 msg, 0, NL80211_MCGRP_NAN, gfp);
11643 else
11644 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11645 wdev->owner_nlportid);
11646
11647 return;
11648
11649 nla_put_failure:
11650 nlmsg_free(msg);
11651 }
11652 EXPORT_SYMBOL(cfg80211_nan_match);
11653
11654 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11655 u8 inst_id,
11656 enum nl80211_nan_func_term_reason reason,
11657 u64 cookie, gfp_t gfp)
11658 {
11659 struct wiphy *wiphy = wdev->wiphy;
11660 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11661 struct sk_buff *msg;
11662 struct nlattr *func_attr;
11663 void *hdr;
11664
11665 if (WARN_ON(!inst_id))
11666 return;
11667
11668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11669 if (!msg)
11670 return;
11671
11672 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11673 if (!hdr) {
11674 nlmsg_free(msg);
11675 return;
11676 }
11677
11678 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11679 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11680 wdev->netdev->ifindex)) ||
11681 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11682 NL80211_ATTR_PAD))
11683 goto nla_put_failure;
11684
11685 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11686 NL80211_ATTR_PAD))
11687 goto nla_put_failure;
11688
11689 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11690 if (!func_attr)
11691 goto nla_put_failure;
11692
11693 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11694 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11695 goto nla_put_failure;
11696
11697 nla_nest_end(msg, func_attr);
11698 genlmsg_end(msg, hdr);
11699
11700 if (!wdev->owner_nlportid)
11701 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11702 msg, 0, NL80211_MCGRP_NAN, gfp);
11703 else
11704 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11705 wdev->owner_nlportid);
11706
11707 return;
11708
11709 nla_put_failure:
11710 nlmsg_free(msg);
11711 }
11712 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11713
11714 static int nl80211_get_protocol_features(struct sk_buff *skb,
11715 struct genl_info *info)
11716 {
11717 void *hdr;
11718 struct sk_buff *msg;
11719
11720 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11721 if (!msg)
11722 return -ENOMEM;
11723
11724 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11725 NL80211_CMD_GET_PROTOCOL_FEATURES);
11726 if (!hdr)
11727 goto nla_put_failure;
11728
11729 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11730 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11731 goto nla_put_failure;
11732
11733 genlmsg_end(msg, hdr);
11734 return genlmsg_reply(msg, info);
11735
11736 nla_put_failure:
11737 kfree_skb(msg);
11738 return -ENOBUFS;
11739 }
11740
11741 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11742 {
11743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11744 struct cfg80211_update_ft_ies_params ft_params;
11745 struct net_device *dev = info->user_ptr[1];
11746
11747 if (!rdev->ops->update_ft_ies)
11748 return -EOPNOTSUPP;
11749
11750 if (!info->attrs[NL80211_ATTR_MDID] ||
11751 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11752 return -EINVAL;
11753
11754 memset(&ft_params, 0, sizeof(ft_params));
11755 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11756 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11757 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11758
11759 return rdev_update_ft_ies(rdev, dev, &ft_params);
11760 }
11761
11762 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11763 struct genl_info *info)
11764 {
11765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11766 struct wireless_dev *wdev = info->user_ptr[1];
11767 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11768 u16 duration;
11769 int ret;
11770
11771 if (!rdev->ops->crit_proto_start)
11772 return -EOPNOTSUPP;
11773
11774 if (WARN_ON(!rdev->ops->crit_proto_stop))
11775 return -EINVAL;
11776
11777 if (rdev->crit_proto_nlportid)
11778 return -EBUSY;
11779
11780 /* determine protocol if provided */
11781 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11782 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11783
11784 if (proto >= NUM_NL80211_CRIT_PROTO)
11785 return -EINVAL;
11786
11787 /* timeout must be provided */
11788 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11789 return -EINVAL;
11790
11791 duration =
11792 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11793
11794 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11795 return -ERANGE;
11796
11797 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11798 if (!ret)
11799 rdev->crit_proto_nlportid = info->snd_portid;
11800
11801 return ret;
11802 }
11803
11804 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11805 struct genl_info *info)
11806 {
11807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11808 struct wireless_dev *wdev = info->user_ptr[1];
11809
11810 if (!rdev->ops->crit_proto_stop)
11811 return -EOPNOTSUPP;
11812
11813 if (rdev->crit_proto_nlportid) {
11814 rdev->crit_proto_nlportid = 0;
11815 rdev_crit_proto_stop(rdev, wdev);
11816 }
11817 return 0;
11818 }
11819
11820 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11821 {
11822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11823 struct wireless_dev *wdev =
11824 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11825 int i, err;
11826 u32 vid, subcmd;
11827
11828 if (!rdev->wiphy.vendor_commands)
11829 return -EOPNOTSUPP;
11830
11831 if (IS_ERR(wdev)) {
11832 err = PTR_ERR(wdev);
11833 if (err != -EINVAL)
11834 return err;
11835 wdev = NULL;
11836 } else if (wdev->wiphy != &rdev->wiphy) {
11837 return -EINVAL;
11838 }
11839
11840 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11841 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11842 return -EINVAL;
11843
11844 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11845 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11846 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11847 const struct wiphy_vendor_command *vcmd;
11848 void *data = NULL;
11849 int len = 0;
11850
11851 vcmd = &rdev->wiphy.vendor_commands[i];
11852
11853 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11854 continue;
11855
11856 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11857 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11858 if (!wdev)
11859 return -EINVAL;
11860 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11861 !wdev->netdev)
11862 return -EINVAL;
11863
11864 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11865 if (!wdev_running(wdev))
11866 return -ENETDOWN;
11867 }
11868
11869 if (!vcmd->doit)
11870 return -EOPNOTSUPP;
11871 } else {
11872 wdev = NULL;
11873 }
11874
11875 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11876 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11877 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11878 }
11879
11880 rdev->cur_cmd_info = info;
11881 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11882 data, len);
11883 rdev->cur_cmd_info = NULL;
11884 return err;
11885 }
11886
11887 return -EOPNOTSUPP;
11888 }
11889
11890 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11891 struct netlink_callback *cb,
11892 struct cfg80211_registered_device **rdev,
11893 struct wireless_dev **wdev)
11894 {
11895 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11896 u32 vid, subcmd;
11897 unsigned int i;
11898 int vcmd_idx = -1;
11899 int err;
11900 void *data = NULL;
11901 unsigned int data_len = 0;
11902
11903 if (cb->args[0]) {
11904 /* subtract the 1 again here */
11905 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11906 struct wireless_dev *tmp;
11907
11908 if (!wiphy)
11909 return -ENODEV;
11910 *rdev = wiphy_to_rdev(wiphy);
11911 *wdev = NULL;
11912
11913 if (cb->args[1]) {
11914 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11915 if (tmp->identifier == cb->args[1] - 1) {
11916 *wdev = tmp;
11917 break;
11918 }
11919 }
11920 }
11921
11922 /* keep rtnl locked in successful case */
11923 return 0;
11924 }
11925
11926 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11927 nl80211_fam.maxattr, nl80211_policy, NULL);
11928 if (err)
11929 return err;
11930
11931 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11932 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11933 return -EINVAL;
11934
11935 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11936 if (IS_ERR(*wdev))
11937 *wdev = NULL;
11938
11939 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11940 if (IS_ERR(*rdev))
11941 return PTR_ERR(*rdev);
11942
11943 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11944 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11945
11946 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11947 const struct wiphy_vendor_command *vcmd;
11948
11949 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11950
11951 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11952 continue;
11953
11954 if (!vcmd->dumpit)
11955 return -EOPNOTSUPP;
11956
11957 vcmd_idx = i;
11958 break;
11959 }
11960
11961 if (vcmd_idx < 0)
11962 return -EOPNOTSUPP;
11963
11964 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11965 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11966 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11967 }
11968
11969 /* 0 is the first index - add 1 to parse only once */
11970 cb->args[0] = (*rdev)->wiphy_idx + 1;
11971 /* add 1 to know if it was NULL */
11972 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11973 cb->args[2] = vcmd_idx;
11974 cb->args[3] = (unsigned long)data;
11975 cb->args[4] = data_len;
11976
11977 /* keep rtnl locked in successful case */
11978 return 0;
11979 }
11980
11981 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11982 struct netlink_callback *cb)
11983 {
11984 struct cfg80211_registered_device *rdev;
11985 struct wireless_dev *wdev;
11986 unsigned int vcmd_idx;
11987 const struct wiphy_vendor_command *vcmd;
11988 void *data;
11989 int data_len;
11990 int err;
11991 struct nlattr *vendor_data;
11992
11993 rtnl_lock();
11994 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11995 if (err)
11996 goto out;
11997
11998 vcmd_idx = cb->args[2];
11999 data = (void *)cb->args[3];
12000 data_len = cb->args[4];
12001 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12002
12003 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12004 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12005 if (!wdev) {
12006 err = -EINVAL;
12007 goto out;
12008 }
12009 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12010 !wdev->netdev) {
12011 err = -EINVAL;
12012 goto out;
12013 }
12014
12015 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12016 if (!wdev_running(wdev)) {
12017 err = -ENETDOWN;
12018 goto out;
12019 }
12020 }
12021 }
12022
12023 while (1) {
12024 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12025 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12026 NL80211_CMD_VENDOR);
12027 if (!hdr)
12028 break;
12029
12030 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12031 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12032 wdev_id(wdev),
12033 NL80211_ATTR_PAD))) {
12034 genlmsg_cancel(skb, hdr);
12035 break;
12036 }
12037
12038 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12039 if (!vendor_data) {
12040 genlmsg_cancel(skb, hdr);
12041 break;
12042 }
12043
12044 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12045 (unsigned long *)&cb->args[5]);
12046 nla_nest_end(skb, vendor_data);
12047
12048 if (err == -ENOBUFS || err == -ENOENT) {
12049 genlmsg_cancel(skb, hdr);
12050 break;
12051 } else if (err) {
12052 genlmsg_cancel(skb, hdr);
12053 goto out;
12054 }
12055
12056 genlmsg_end(skb, hdr);
12057 }
12058
12059 err = skb->len;
12060 out:
12061 rtnl_unlock();
12062 return err;
12063 }
12064
12065 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12066 enum nl80211_commands cmd,
12067 enum nl80211_attrs attr,
12068 int approxlen)
12069 {
12070 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12071
12072 if (WARN_ON(!rdev->cur_cmd_info))
12073 return NULL;
12074
12075 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12076 rdev->cur_cmd_info->snd_portid,
12077 rdev->cur_cmd_info->snd_seq,
12078 cmd, attr, NULL, GFP_KERNEL);
12079 }
12080 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12081
12082 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12083 {
12084 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12085 void *hdr = ((void **)skb->cb)[1];
12086 struct nlattr *data = ((void **)skb->cb)[2];
12087
12088 /* clear CB data for netlink core to own from now on */
12089 memset(skb->cb, 0, sizeof(skb->cb));
12090
12091 if (WARN_ON(!rdev->cur_cmd_info)) {
12092 kfree_skb(skb);
12093 return -EINVAL;
12094 }
12095
12096 nla_nest_end(skb, data);
12097 genlmsg_end(skb, hdr);
12098 return genlmsg_reply(skb, rdev->cur_cmd_info);
12099 }
12100 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12101
12102 static int nl80211_set_qos_map(struct sk_buff *skb,
12103 struct genl_info *info)
12104 {
12105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12106 struct cfg80211_qos_map *qos_map = NULL;
12107 struct net_device *dev = info->user_ptr[1];
12108 u8 *pos, len, num_des, des_len, des;
12109 int ret;
12110
12111 if (!rdev->ops->set_qos_map)
12112 return -EOPNOTSUPP;
12113
12114 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12115 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12116 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12117
12118 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12119 len > IEEE80211_QOS_MAP_LEN_MAX)
12120 return -EINVAL;
12121
12122 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12123 if (!qos_map)
12124 return -ENOMEM;
12125
12126 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12127 if (num_des) {
12128 des_len = num_des *
12129 sizeof(struct cfg80211_dscp_exception);
12130 memcpy(qos_map->dscp_exception, pos, des_len);
12131 qos_map->num_des = num_des;
12132 for (des = 0; des < num_des; des++) {
12133 if (qos_map->dscp_exception[des].up > 7) {
12134 kfree(qos_map);
12135 return -EINVAL;
12136 }
12137 }
12138 pos += des_len;
12139 }
12140 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12141 }
12142
12143 wdev_lock(dev->ieee80211_ptr);
12144 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12145 if (!ret)
12146 ret = rdev_set_qos_map(rdev, dev, qos_map);
12147 wdev_unlock(dev->ieee80211_ptr);
12148
12149 kfree(qos_map);
12150 return ret;
12151 }
12152
12153 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12154 {
12155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12156 struct net_device *dev = info->user_ptr[1];
12157 struct wireless_dev *wdev = dev->ieee80211_ptr;
12158 const u8 *peer;
12159 u8 tsid, up;
12160 u16 admitted_time = 0;
12161 int err;
12162
12163 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12164 return -EOPNOTSUPP;
12165
12166 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12167 !info->attrs[NL80211_ATTR_USER_PRIO])
12168 return -EINVAL;
12169
12170 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12171 if (tsid >= IEEE80211_NUM_TIDS)
12172 return -EINVAL;
12173
12174 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12175 if (up >= IEEE80211_NUM_UPS)
12176 return -EINVAL;
12177
12178 /* WMM uses TIDs 0-7 even for TSPEC */
12179 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12180 /* TODO: handle 802.11 TSPEC/admission control
12181 * need more attributes for that (e.g. BA session requirement);
12182 * change the WMM adminssion test above to allow both then
12183 */
12184 return -EINVAL;
12185 }
12186
12187 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12188
12189 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12190 admitted_time =
12191 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12192 if (!admitted_time)
12193 return -EINVAL;
12194 }
12195
12196 wdev_lock(wdev);
12197 switch (wdev->iftype) {
12198 case NL80211_IFTYPE_STATION:
12199 case NL80211_IFTYPE_P2P_CLIENT:
12200 if (wdev->current_bss)
12201 break;
12202 err = -ENOTCONN;
12203 goto out;
12204 default:
12205 err = -EOPNOTSUPP;
12206 goto out;
12207 }
12208
12209 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12210
12211 out:
12212 wdev_unlock(wdev);
12213 return err;
12214 }
12215
12216 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12217 {
12218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12219 struct net_device *dev = info->user_ptr[1];
12220 struct wireless_dev *wdev = dev->ieee80211_ptr;
12221 const u8 *peer;
12222 u8 tsid;
12223 int err;
12224
12225 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12226 return -EINVAL;
12227
12228 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12229 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12230
12231 wdev_lock(wdev);
12232 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12233 wdev_unlock(wdev);
12234
12235 return err;
12236 }
12237
12238 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12239 struct genl_info *info)
12240 {
12241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12242 struct net_device *dev = info->user_ptr[1];
12243 struct wireless_dev *wdev = dev->ieee80211_ptr;
12244 struct cfg80211_chan_def chandef = {};
12245 const u8 *addr;
12246 u8 oper_class;
12247 int err;
12248
12249 if (!rdev->ops->tdls_channel_switch ||
12250 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12251 return -EOPNOTSUPP;
12252
12253 switch (dev->ieee80211_ptr->iftype) {
12254 case NL80211_IFTYPE_STATION:
12255 case NL80211_IFTYPE_P2P_CLIENT:
12256 break;
12257 default:
12258 return -EOPNOTSUPP;
12259 }
12260
12261 if (!info->attrs[NL80211_ATTR_MAC] ||
12262 !info->attrs[NL80211_ATTR_OPER_CLASS])
12263 return -EINVAL;
12264
12265 err = nl80211_parse_chandef(rdev, info, &chandef);
12266 if (err)
12267 return err;
12268
12269 /*
12270 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12271 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12272 * specification is not defined for them.
12273 */
12274 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12275 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12276 chandef.width != NL80211_CHAN_WIDTH_20)
12277 return -EINVAL;
12278
12279 /* we will be active on the TDLS link */
12280 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12281 wdev->iftype))
12282 return -EINVAL;
12283
12284 /* don't allow switching to DFS channels */
12285 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12286 return -EINVAL;
12287
12288 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12289 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12290
12291 wdev_lock(wdev);
12292 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12293 wdev_unlock(wdev);
12294
12295 return err;
12296 }
12297
12298 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12299 struct genl_info *info)
12300 {
12301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12302 struct net_device *dev = info->user_ptr[1];
12303 struct wireless_dev *wdev = dev->ieee80211_ptr;
12304 const u8 *addr;
12305
12306 if (!rdev->ops->tdls_channel_switch ||
12307 !rdev->ops->tdls_cancel_channel_switch ||
12308 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12309 return -EOPNOTSUPP;
12310
12311 switch (dev->ieee80211_ptr->iftype) {
12312 case NL80211_IFTYPE_STATION:
12313 case NL80211_IFTYPE_P2P_CLIENT:
12314 break;
12315 default:
12316 return -EOPNOTSUPP;
12317 }
12318
12319 if (!info->attrs[NL80211_ATTR_MAC])
12320 return -EINVAL;
12321
12322 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12323
12324 wdev_lock(wdev);
12325 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12326 wdev_unlock(wdev);
12327
12328 return 0;
12329 }
12330
12331 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12332 struct genl_info *info)
12333 {
12334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12335 struct net_device *dev = info->user_ptr[1];
12336 struct wireless_dev *wdev = dev->ieee80211_ptr;
12337 const struct nlattr *nla;
12338 bool enabled;
12339
12340 if (!rdev->ops->set_multicast_to_unicast)
12341 return -EOPNOTSUPP;
12342
12343 if (wdev->iftype != NL80211_IFTYPE_AP &&
12344 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12345 return -EOPNOTSUPP;
12346
12347 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12348 enabled = nla_get_flag(nla);
12349
12350 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12351 }
12352
12353 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12354 {
12355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12356 struct net_device *dev = info->user_ptr[1];
12357 struct wireless_dev *wdev = dev->ieee80211_ptr;
12358 struct cfg80211_pmk_conf pmk_conf = {};
12359 int ret;
12360
12361 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12362 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12363 return -EOPNOTSUPP;
12364
12365 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12366 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12367 return -EOPNOTSUPP;
12368
12369 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12370 return -EINVAL;
12371
12372 wdev_lock(wdev);
12373 if (!wdev->current_bss) {
12374 ret = -ENOTCONN;
12375 goto out;
12376 }
12377
12378 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12379 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12380 ret = -EINVAL;
12381 goto out;
12382 }
12383
12384 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12385 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12386 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12387 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12388 ret = -EINVAL;
12389 goto out;
12390 }
12391
12392 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12393 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12394
12395 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12396 ret = -EINVAL;
12397 goto out;
12398 }
12399
12400 pmk_conf.pmk_r0_name =
12401 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12402 }
12403
12404 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12405 out:
12406 wdev_unlock(wdev);
12407 return ret;
12408 }
12409
12410 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12411 {
12412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12413 struct net_device *dev = info->user_ptr[1];
12414 struct wireless_dev *wdev = dev->ieee80211_ptr;
12415 const u8 *aa;
12416 int ret;
12417
12418 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12419 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12420 return -EOPNOTSUPP;
12421
12422 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12423 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12424 return -EOPNOTSUPP;
12425
12426 if (!info->attrs[NL80211_ATTR_MAC])
12427 return -EINVAL;
12428
12429 wdev_lock(wdev);
12430 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12431 ret = rdev_del_pmk(rdev, dev, aa);
12432 wdev_unlock(wdev);
12433
12434 return ret;
12435 }
12436
12437 #define NL80211_FLAG_NEED_WIPHY 0x01
12438 #define NL80211_FLAG_NEED_NETDEV 0x02
12439 #define NL80211_FLAG_NEED_RTNL 0x04
12440 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12441 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12442 NL80211_FLAG_CHECK_NETDEV_UP)
12443 #define NL80211_FLAG_NEED_WDEV 0x10
12444 /* If a netdev is associated, it must be UP, P2P must be started */
12445 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12446 NL80211_FLAG_CHECK_NETDEV_UP)
12447 #define NL80211_FLAG_CLEAR_SKB 0x20
12448
12449 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12450 struct genl_info *info)
12451 {
12452 struct cfg80211_registered_device *rdev;
12453 struct wireless_dev *wdev;
12454 struct net_device *dev;
12455 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12456
12457 if (rtnl)
12458 rtnl_lock();
12459
12460 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12461 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12462 if (IS_ERR(rdev)) {
12463 if (rtnl)
12464 rtnl_unlock();
12465 return PTR_ERR(rdev);
12466 }
12467 info->user_ptr[0] = rdev;
12468 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12469 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12470 ASSERT_RTNL();
12471
12472 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12473 info->attrs);
12474 if (IS_ERR(wdev)) {
12475 if (rtnl)
12476 rtnl_unlock();
12477 return PTR_ERR(wdev);
12478 }
12479
12480 dev = wdev->netdev;
12481 rdev = wiphy_to_rdev(wdev->wiphy);
12482
12483 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12484 if (!dev) {
12485 if (rtnl)
12486 rtnl_unlock();
12487 return -EINVAL;
12488 }
12489
12490 info->user_ptr[1] = dev;
12491 } else {
12492 info->user_ptr[1] = wdev;
12493 }
12494
12495 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12496 !wdev_running(wdev)) {
12497 if (rtnl)
12498 rtnl_unlock();
12499 return -ENETDOWN;
12500 }
12501
12502 if (dev)
12503 dev_hold(dev);
12504
12505 info->user_ptr[0] = rdev;
12506 }
12507
12508 return 0;
12509 }
12510
12511 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12512 struct genl_info *info)
12513 {
12514 if (info->user_ptr[1]) {
12515 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12516 struct wireless_dev *wdev = info->user_ptr[1];
12517
12518 if (wdev->netdev)
12519 dev_put(wdev->netdev);
12520 } else {
12521 dev_put(info->user_ptr[1]);
12522 }
12523 }
12524
12525 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12526 rtnl_unlock();
12527
12528 /* If needed, clear the netlink message payload from the SKB
12529 * as it might contain key data that shouldn't stick around on
12530 * the heap after the SKB is freed. The netlink message header
12531 * is still needed for further processing, so leave it intact.
12532 */
12533 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12534 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12535
12536 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12537 }
12538 }
12539
12540 static const struct genl_ops nl80211_ops[] = {
12541 {
12542 .cmd = NL80211_CMD_GET_WIPHY,
12543 .doit = nl80211_get_wiphy,
12544 .dumpit = nl80211_dump_wiphy,
12545 .done = nl80211_dump_wiphy_done,
12546 .policy = nl80211_policy,
12547 /* can be retrieved by unprivileged users */
12548 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12549 NL80211_FLAG_NEED_RTNL,
12550 },
12551 {
12552 .cmd = NL80211_CMD_SET_WIPHY,
12553 .doit = nl80211_set_wiphy,
12554 .policy = nl80211_policy,
12555 .flags = GENL_UNS_ADMIN_PERM,
12556 .internal_flags = NL80211_FLAG_NEED_RTNL,
12557 },
12558 {
12559 .cmd = NL80211_CMD_GET_INTERFACE,
12560 .doit = nl80211_get_interface,
12561 .dumpit = nl80211_dump_interface,
12562 .policy = nl80211_policy,
12563 /* can be retrieved by unprivileged users */
12564 .internal_flags = NL80211_FLAG_NEED_WDEV |
12565 NL80211_FLAG_NEED_RTNL,
12566 },
12567 {
12568 .cmd = NL80211_CMD_SET_INTERFACE,
12569 .doit = nl80211_set_interface,
12570 .policy = nl80211_policy,
12571 .flags = GENL_UNS_ADMIN_PERM,
12572 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12573 NL80211_FLAG_NEED_RTNL,
12574 },
12575 {
12576 .cmd = NL80211_CMD_NEW_INTERFACE,
12577 .doit = nl80211_new_interface,
12578 .policy = nl80211_policy,
12579 .flags = GENL_UNS_ADMIN_PERM,
12580 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12581 NL80211_FLAG_NEED_RTNL,
12582 },
12583 {
12584 .cmd = NL80211_CMD_DEL_INTERFACE,
12585 .doit = nl80211_del_interface,
12586 .policy = nl80211_policy,
12587 .flags = GENL_UNS_ADMIN_PERM,
12588 .internal_flags = NL80211_FLAG_NEED_WDEV |
12589 NL80211_FLAG_NEED_RTNL,
12590 },
12591 {
12592 .cmd = NL80211_CMD_GET_KEY,
12593 .doit = nl80211_get_key,
12594 .policy = nl80211_policy,
12595 .flags = GENL_UNS_ADMIN_PERM,
12596 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12597 NL80211_FLAG_NEED_RTNL,
12598 },
12599 {
12600 .cmd = NL80211_CMD_SET_KEY,
12601 .doit = nl80211_set_key,
12602 .policy = nl80211_policy,
12603 .flags = GENL_UNS_ADMIN_PERM,
12604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12605 NL80211_FLAG_NEED_RTNL |
12606 NL80211_FLAG_CLEAR_SKB,
12607 },
12608 {
12609 .cmd = NL80211_CMD_NEW_KEY,
12610 .doit = nl80211_new_key,
12611 .policy = nl80211_policy,
12612 .flags = GENL_UNS_ADMIN_PERM,
12613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12614 NL80211_FLAG_NEED_RTNL |
12615 NL80211_FLAG_CLEAR_SKB,
12616 },
12617 {
12618 .cmd = NL80211_CMD_DEL_KEY,
12619 .doit = nl80211_del_key,
12620 .policy = nl80211_policy,
12621 .flags = GENL_UNS_ADMIN_PERM,
12622 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12623 NL80211_FLAG_NEED_RTNL,
12624 },
12625 {
12626 .cmd = NL80211_CMD_SET_BEACON,
12627 .policy = nl80211_policy,
12628 .flags = GENL_UNS_ADMIN_PERM,
12629 .doit = nl80211_set_beacon,
12630 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12631 NL80211_FLAG_NEED_RTNL,
12632 },
12633 {
12634 .cmd = NL80211_CMD_START_AP,
12635 .policy = nl80211_policy,
12636 .flags = GENL_UNS_ADMIN_PERM,
12637 .doit = nl80211_start_ap,
12638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12639 NL80211_FLAG_NEED_RTNL,
12640 },
12641 {
12642 .cmd = NL80211_CMD_STOP_AP,
12643 .policy = nl80211_policy,
12644 .flags = GENL_UNS_ADMIN_PERM,
12645 .doit = nl80211_stop_ap,
12646 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12647 NL80211_FLAG_NEED_RTNL,
12648 },
12649 {
12650 .cmd = NL80211_CMD_GET_STATION,
12651 .doit = nl80211_get_station,
12652 .dumpit = nl80211_dump_station,
12653 .policy = nl80211_policy,
12654 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12655 NL80211_FLAG_NEED_RTNL,
12656 },
12657 {
12658 .cmd = NL80211_CMD_SET_STATION,
12659 .doit = nl80211_set_station,
12660 .policy = nl80211_policy,
12661 .flags = GENL_UNS_ADMIN_PERM,
12662 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12663 NL80211_FLAG_NEED_RTNL,
12664 },
12665 {
12666 .cmd = NL80211_CMD_NEW_STATION,
12667 .doit = nl80211_new_station,
12668 .policy = nl80211_policy,
12669 .flags = GENL_UNS_ADMIN_PERM,
12670 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12671 NL80211_FLAG_NEED_RTNL,
12672 },
12673 {
12674 .cmd = NL80211_CMD_DEL_STATION,
12675 .doit = nl80211_del_station,
12676 .policy = nl80211_policy,
12677 .flags = GENL_UNS_ADMIN_PERM,
12678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12679 NL80211_FLAG_NEED_RTNL,
12680 },
12681 {
12682 .cmd = NL80211_CMD_GET_MPATH,
12683 .doit = nl80211_get_mpath,
12684 .dumpit = nl80211_dump_mpath,
12685 .policy = nl80211_policy,
12686 .flags = GENL_UNS_ADMIN_PERM,
12687 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12688 NL80211_FLAG_NEED_RTNL,
12689 },
12690 {
12691 .cmd = NL80211_CMD_GET_MPP,
12692 .doit = nl80211_get_mpp,
12693 .dumpit = nl80211_dump_mpp,
12694 .policy = nl80211_policy,
12695 .flags = GENL_UNS_ADMIN_PERM,
12696 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12697 NL80211_FLAG_NEED_RTNL,
12698 },
12699 {
12700 .cmd = NL80211_CMD_SET_MPATH,
12701 .doit = nl80211_set_mpath,
12702 .policy = nl80211_policy,
12703 .flags = GENL_UNS_ADMIN_PERM,
12704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12705 NL80211_FLAG_NEED_RTNL,
12706 },
12707 {
12708 .cmd = NL80211_CMD_NEW_MPATH,
12709 .doit = nl80211_new_mpath,
12710 .policy = nl80211_policy,
12711 .flags = GENL_UNS_ADMIN_PERM,
12712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12713 NL80211_FLAG_NEED_RTNL,
12714 },
12715 {
12716 .cmd = NL80211_CMD_DEL_MPATH,
12717 .doit = nl80211_del_mpath,
12718 .policy = nl80211_policy,
12719 .flags = GENL_UNS_ADMIN_PERM,
12720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12721 NL80211_FLAG_NEED_RTNL,
12722 },
12723 {
12724 .cmd = NL80211_CMD_SET_BSS,
12725 .doit = nl80211_set_bss,
12726 .policy = nl80211_policy,
12727 .flags = GENL_UNS_ADMIN_PERM,
12728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12729 NL80211_FLAG_NEED_RTNL,
12730 },
12731 {
12732 .cmd = NL80211_CMD_GET_REG,
12733 .doit = nl80211_get_reg_do,
12734 .dumpit = nl80211_get_reg_dump,
12735 .policy = nl80211_policy,
12736 .internal_flags = NL80211_FLAG_NEED_RTNL,
12737 /* can be retrieved by unprivileged users */
12738 },
12739 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12740 {
12741 .cmd = NL80211_CMD_SET_REG,
12742 .doit = nl80211_set_reg,
12743 .policy = nl80211_policy,
12744 .flags = GENL_ADMIN_PERM,
12745 .internal_flags = NL80211_FLAG_NEED_RTNL,
12746 },
12747 #endif
12748 {
12749 .cmd = NL80211_CMD_REQ_SET_REG,
12750 .doit = nl80211_req_set_reg,
12751 .policy = nl80211_policy,
12752 .flags = GENL_ADMIN_PERM,
12753 },
12754 {
12755 .cmd = NL80211_CMD_RELOAD_REGDB,
12756 .doit = nl80211_reload_regdb,
12757 .policy = nl80211_policy,
12758 .flags = GENL_ADMIN_PERM,
12759 },
12760 {
12761 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12762 .doit = nl80211_get_mesh_config,
12763 .policy = nl80211_policy,
12764 /* can be retrieved by unprivileged users */
12765 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12766 NL80211_FLAG_NEED_RTNL,
12767 },
12768 {
12769 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12770 .doit = nl80211_update_mesh_config,
12771 .policy = nl80211_policy,
12772 .flags = GENL_UNS_ADMIN_PERM,
12773 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12774 NL80211_FLAG_NEED_RTNL,
12775 },
12776 {
12777 .cmd = NL80211_CMD_TRIGGER_SCAN,
12778 .doit = nl80211_trigger_scan,
12779 .policy = nl80211_policy,
12780 .flags = GENL_UNS_ADMIN_PERM,
12781 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12782 NL80211_FLAG_NEED_RTNL,
12783 },
12784 {
12785 .cmd = NL80211_CMD_ABORT_SCAN,
12786 .doit = nl80211_abort_scan,
12787 .policy = nl80211_policy,
12788 .flags = GENL_UNS_ADMIN_PERM,
12789 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12790 NL80211_FLAG_NEED_RTNL,
12791 },
12792 {
12793 .cmd = NL80211_CMD_GET_SCAN,
12794 .policy = nl80211_policy,
12795 .dumpit = nl80211_dump_scan,
12796 },
12797 {
12798 .cmd = NL80211_CMD_START_SCHED_SCAN,
12799 .doit = nl80211_start_sched_scan,
12800 .policy = nl80211_policy,
12801 .flags = GENL_UNS_ADMIN_PERM,
12802 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12803 NL80211_FLAG_NEED_RTNL,
12804 },
12805 {
12806 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12807 .doit = nl80211_stop_sched_scan,
12808 .policy = nl80211_policy,
12809 .flags = GENL_UNS_ADMIN_PERM,
12810 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12811 NL80211_FLAG_NEED_RTNL,
12812 },
12813 {
12814 .cmd = NL80211_CMD_AUTHENTICATE,
12815 .doit = nl80211_authenticate,
12816 .policy = nl80211_policy,
12817 .flags = GENL_UNS_ADMIN_PERM,
12818 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12819 NL80211_FLAG_NEED_RTNL |
12820 NL80211_FLAG_CLEAR_SKB,
12821 },
12822 {
12823 .cmd = NL80211_CMD_ASSOCIATE,
12824 .doit = nl80211_associate,
12825 .policy = nl80211_policy,
12826 .flags = GENL_UNS_ADMIN_PERM,
12827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12828 NL80211_FLAG_NEED_RTNL,
12829 },
12830 {
12831 .cmd = NL80211_CMD_DEAUTHENTICATE,
12832 .doit = nl80211_deauthenticate,
12833 .policy = nl80211_policy,
12834 .flags = GENL_UNS_ADMIN_PERM,
12835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12836 NL80211_FLAG_NEED_RTNL,
12837 },
12838 {
12839 .cmd = NL80211_CMD_DISASSOCIATE,
12840 .doit = nl80211_disassociate,
12841 .policy = nl80211_policy,
12842 .flags = GENL_UNS_ADMIN_PERM,
12843 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12844 NL80211_FLAG_NEED_RTNL,
12845 },
12846 {
12847 .cmd = NL80211_CMD_JOIN_IBSS,
12848 .doit = nl80211_join_ibss,
12849 .policy = nl80211_policy,
12850 .flags = GENL_UNS_ADMIN_PERM,
12851 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12852 NL80211_FLAG_NEED_RTNL,
12853 },
12854 {
12855 .cmd = NL80211_CMD_LEAVE_IBSS,
12856 .doit = nl80211_leave_ibss,
12857 .policy = nl80211_policy,
12858 .flags = GENL_UNS_ADMIN_PERM,
12859 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12860 NL80211_FLAG_NEED_RTNL,
12861 },
12862 #ifdef CONFIG_NL80211_TESTMODE
12863 {
12864 .cmd = NL80211_CMD_TESTMODE,
12865 .doit = nl80211_testmode_do,
12866 .dumpit = nl80211_testmode_dump,
12867 .policy = nl80211_policy,
12868 .flags = GENL_UNS_ADMIN_PERM,
12869 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12870 NL80211_FLAG_NEED_RTNL,
12871 },
12872 #endif
12873 {
12874 .cmd = NL80211_CMD_CONNECT,
12875 .doit = nl80211_connect,
12876 .policy = nl80211_policy,
12877 .flags = GENL_UNS_ADMIN_PERM,
12878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12879 NL80211_FLAG_NEED_RTNL,
12880 },
12881 {
12882 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12883 .doit = nl80211_update_connect_params,
12884 .policy = nl80211_policy,
12885 .flags = GENL_ADMIN_PERM,
12886 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12887 NL80211_FLAG_NEED_RTNL,
12888 },
12889 {
12890 .cmd = NL80211_CMD_DISCONNECT,
12891 .doit = nl80211_disconnect,
12892 .policy = nl80211_policy,
12893 .flags = GENL_UNS_ADMIN_PERM,
12894 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12895 NL80211_FLAG_NEED_RTNL,
12896 },
12897 {
12898 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12899 .doit = nl80211_wiphy_netns,
12900 .policy = nl80211_policy,
12901 .flags = GENL_UNS_ADMIN_PERM,
12902 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12903 NL80211_FLAG_NEED_RTNL,
12904 },
12905 {
12906 .cmd = NL80211_CMD_GET_SURVEY,
12907 .policy = nl80211_policy,
12908 .dumpit = nl80211_dump_survey,
12909 },
12910 {
12911 .cmd = NL80211_CMD_SET_PMKSA,
12912 .doit = nl80211_setdel_pmksa,
12913 .policy = nl80211_policy,
12914 .flags = GENL_UNS_ADMIN_PERM,
12915 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12916 NL80211_FLAG_NEED_RTNL,
12917 },
12918 {
12919 .cmd = NL80211_CMD_DEL_PMKSA,
12920 .doit = nl80211_setdel_pmksa,
12921 .policy = nl80211_policy,
12922 .flags = GENL_UNS_ADMIN_PERM,
12923 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12924 NL80211_FLAG_NEED_RTNL,
12925 },
12926 {
12927 .cmd = NL80211_CMD_FLUSH_PMKSA,
12928 .doit = nl80211_flush_pmksa,
12929 .policy = nl80211_policy,
12930 .flags = GENL_UNS_ADMIN_PERM,
12931 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12932 NL80211_FLAG_NEED_RTNL,
12933 },
12934 {
12935 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12936 .doit = nl80211_remain_on_channel,
12937 .policy = nl80211_policy,
12938 .flags = GENL_UNS_ADMIN_PERM,
12939 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12940 NL80211_FLAG_NEED_RTNL,
12941 },
12942 {
12943 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12944 .doit = nl80211_cancel_remain_on_channel,
12945 .policy = nl80211_policy,
12946 .flags = GENL_UNS_ADMIN_PERM,
12947 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12948 NL80211_FLAG_NEED_RTNL,
12949 },
12950 {
12951 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12952 .doit = nl80211_set_tx_bitrate_mask,
12953 .policy = nl80211_policy,
12954 .flags = GENL_UNS_ADMIN_PERM,
12955 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12956 NL80211_FLAG_NEED_RTNL,
12957 },
12958 {
12959 .cmd = NL80211_CMD_REGISTER_FRAME,
12960 .doit = nl80211_register_mgmt,
12961 .policy = nl80211_policy,
12962 .flags = GENL_UNS_ADMIN_PERM,
12963 .internal_flags = NL80211_FLAG_NEED_WDEV |
12964 NL80211_FLAG_NEED_RTNL,
12965 },
12966 {
12967 .cmd = NL80211_CMD_FRAME,
12968 .doit = nl80211_tx_mgmt,
12969 .policy = nl80211_policy,
12970 .flags = GENL_UNS_ADMIN_PERM,
12971 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12972 NL80211_FLAG_NEED_RTNL,
12973 },
12974 {
12975 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12976 .doit = nl80211_tx_mgmt_cancel_wait,
12977 .policy = nl80211_policy,
12978 .flags = GENL_UNS_ADMIN_PERM,
12979 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12980 NL80211_FLAG_NEED_RTNL,
12981 },
12982 {
12983 .cmd = NL80211_CMD_SET_POWER_SAVE,
12984 .doit = nl80211_set_power_save,
12985 .policy = nl80211_policy,
12986 .flags = GENL_UNS_ADMIN_PERM,
12987 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12988 NL80211_FLAG_NEED_RTNL,
12989 },
12990 {
12991 .cmd = NL80211_CMD_GET_POWER_SAVE,
12992 .doit = nl80211_get_power_save,
12993 .policy = nl80211_policy,
12994 /* can be retrieved by unprivileged users */
12995 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12996 NL80211_FLAG_NEED_RTNL,
12997 },
12998 {
12999 .cmd = NL80211_CMD_SET_CQM,
13000 .doit = nl80211_set_cqm,
13001 .policy = nl80211_policy,
13002 .flags = GENL_UNS_ADMIN_PERM,
13003 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13004 NL80211_FLAG_NEED_RTNL,
13005 },
13006 {
13007 .cmd = NL80211_CMD_SET_CHANNEL,
13008 .doit = nl80211_set_channel,
13009 .policy = nl80211_policy,
13010 .flags = GENL_UNS_ADMIN_PERM,
13011 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13012 NL80211_FLAG_NEED_RTNL,
13013 },
13014 {
13015 .cmd = NL80211_CMD_SET_WDS_PEER,
13016 .doit = nl80211_set_wds_peer,
13017 .policy = nl80211_policy,
13018 .flags = GENL_UNS_ADMIN_PERM,
13019 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13020 NL80211_FLAG_NEED_RTNL,
13021 },
13022 {
13023 .cmd = NL80211_CMD_JOIN_MESH,
13024 .doit = nl80211_join_mesh,
13025 .policy = nl80211_policy,
13026 .flags = GENL_UNS_ADMIN_PERM,
13027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13028 NL80211_FLAG_NEED_RTNL,
13029 },
13030 {
13031 .cmd = NL80211_CMD_LEAVE_MESH,
13032 .doit = nl80211_leave_mesh,
13033 .policy = nl80211_policy,
13034 .flags = GENL_UNS_ADMIN_PERM,
13035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13036 NL80211_FLAG_NEED_RTNL,
13037 },
13038 {
13039 .cmd = NL80211_CMD_JOIN_OCB,
13040 .doit = nl80211_join_ocb,
13041 .policy = nl80211_policy,
13042 .flags = GENL_UNS_ADMIN_PERM,
13043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13044 NL80211_FLAG_NEED_RTNL,
13045 },
13046 {
13047 .cmd = NL80211_CMD_LEAVE_OCB,
13048 .doit = nl80211_leave_ocb,
13049 .policy = nl80211_policy,
13050 .flags = GENL_UNS_ADMIN_PERM,
13051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13052 NL80211_FLAG_NEED_RTNL,
13053 },
13054 #ifdef CONFIG_PM
13055 {
13056 .cmd = NL80211_CMD_GET_WOWLAN,
13057 .doit = nl80211_get_wowlan,
13058 .policy = nl80211_policy,
13059 /* can be retrieved by unprivileged users */
13060 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13061 NL80211_FLAG_NEED_RTNL,
13062 },
13063 {
13064 .cmd = NL80211_CMD_SET_WOWLAN,
13065 .doit = nl80211_set_wowlan,
13066 .policy = nl80211_policy,
13067 .flags = GENL_UNS_ADMIN_PERM,
13068 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13069 NL80211_FLAG_NEED_RTNL,
13070 },
13071 #endif
13072 {
13073 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13074 .doit = nl80211_set_rekey_data,
13075 .policy = nl80211_policy,
13076 .flags = GENL_UNS_ADMIN_PERM,
13077 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13078 NL80211_FLAG_NEED_RTNL |
13079 NL80211_FLAG_CLEAR_SKB,
13080 },
13081 {
13082 .cmd = NL80211_CMD_TDLS_MGMT,
13083 .doit = nl80211_tdls_mgmt,
13084 .policy = nl80211_policy,
13085 .flags = GENL_UNS_ADMIN_PERM,
13086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13087 NL80211_FLAG_NEED_RTNL,
13088 },
13089 {
13090 .cmd = NL80211_CMD_TDLS_OPER,
13091 .doit = nl80211_tdls_oper,
13092 .policy = nl80211_policy,
13093 .flags = GENL_UNS_ADMIN_PERM,
13094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13095 NL80211_FLAG_NEED_RTNL,
13096 },
13097 {
13098 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13099 .doit = nl80211_register_unexpected_frame,
13100 .policy = nl80211_policy,
13101 .flags = GENL_UNS_ADMIN_PERM,
13102 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13103 NL80211_FLAG_NEED_RTNL,
13104 },
13105 {
13106 .cmd = NL80211_CMD_PROBE_CLIENT,
13107 .doit = nl80211_probe_client,
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_REGISTER_BEACONS,
13115 .doit = nl80211_register_beacons,
13116 .policy = nl80211_policy,
13117 .flags = GENL_UNS_ADMIN_PERM,
13118 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13119 NL80211_FLAG_NEED_RTNL,
13120 },
13121 {
13122 .cmd = NL80211_CMD_SET_NOACK_MAP,
13123 .doit = nl80211_set_noack_map,
13124 .policy = nl80211_policy,
13125 .flags = GENL_UNS_ADMIN_PERM,
13126 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13127 NL80211_FLAG_NEED_RTNL,
13128 },
13129 {
13130 .cmd = NL80211_CMD_START_P2P_DEVICE,
13131 .doit = nl80211_start_p2p_device,
13132 .policy = nl80211_policy,
13133 .flags = GENL_UNS_ADMIN_PERM,
13134 .internal_flags = NL80211_FLAG_NEED_WDEV |
13135 NL80211_FLAG_NEED_RTNL,
13136 },
13137 {
13138 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13139 .doit = nl80211_stop_p2p_device,
13140 .policy = nl80211_policy,
13141 .flags = GENL_UNS_ADMIN_PERM,
13142 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13143 NL80211_FLAG_NEED_RTNL,
13144 },
13145 {
13146 .cmd = NL80211_CMD_START_NAN,
13147 .doit = nl80211_start_nan,
13148 .policy = nl80211_policy,
13149 .flags = GENL_ADMIN_PERM,
13150 .internal_flags = NL80211_FLAG_NEED_WDEV |
13151 NL80211_FLAG_NEED_RTNL,
13152 },
13153 {
13154 .cmd = NL80211_CMD_STOP_NAN,
13155 .doit = nl80211_stop_nan,
13156 .policy = nl80211_policy,
13157 .flags = GENL_ADMIN_PERM,
13158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13159 NL80211_FLAG_NEED_RTNL,
13160 },
13161 {
13162 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13163 .doit = nl80211_nan_add_func,
13164 .policy = nl80211_policy,
13165 .flags = GENL_ADMIN_PERM,
13166 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13167 NL80211_FLAG_NEED_RTNL,
13168 },
13169 {
13170 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13171 .doit = nl80211_nan_del_func,
13172 .policy = nl80211_policy,
13173 .flags = GENL_ADMIN_PERM,
13174 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13175 NL80211_FLAG_NEED_RTNL,
13176 },
13177 {
13178 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13179 .doit = nl80211_nan_change_config,
13180 .policy = nl80211_policy,
13181 .flags = GENL_ADMIN_PERM,
13182 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13183 NL80211_FLAG_NEED_RTNL,
13184 },
13185 {
13186 .cmd = NL80211_CMD_SET_MCAST_RATE,
13187 .doit = nl80211_set_mcast_rate,
13188 .policy = nl80211_policy,
13189 .flags = GENL_UNS_ADMIN_PERM,
13190 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13191 NL80211_FLAG_NEED_RTNL,
13192 },
13193 {
13194 .cmd = NL80211_CMD_SET_MAC_ACL,
13195 .doit = nl80211_set_mac_acl,
13196 .policy = nl80211_policy,
13197 .flags = GENL_UNS_ADMIN_PERM,
13198 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13199 NL80211_FLAG_NEED_RTNL,
13200 },
13201 {
13202 .cmd = NL80211_CMD_RADAR_DETECT,
13203 .doit = nl80211_start_radar_detection,
13204 .policy = nl80211_policy,
13205 .flags = GENL_UNS_ADMIN_PERM,
13206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13207 NL80211_FLAG_NEED_RTNL,
13208 },
13209 {
13210 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13211 .doit = nl80211_get_protocol_features,
13212 .policy = nl80211_policy,
13213 },
13214 {
13215 .cmd = NL80211_CMD_UPDATE_FT_IES,
13216 .doit = nl80211_update_ft_ies,
13217 .policy = nl80211_policy,
13218 .flags = GENL_UNS_ADMIN_PERM,
13219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13220 NL80211_FLAG_NEED_RTNL,
13221 },
13222 {
13223 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13224 .doit = nl80211_crit_protocol_start,
13225 .policy = nl80211_policy,
13226 .flags = GENL_UNS_ADMIN_PERM,
13227 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13228 NL80211_FLAG_NEED_RTNL,
13229 },
13230 {
13231 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13232 .doit = nl80211_crit_protocol_stop,
13233 .policy = nl80211_policy,
13234 .flags = GENL_UNS_ADMIN_PERM,
13235 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13236 NL80211_FLAG_NEED_RTNL,
13237 },
13238 {
13239 .cmd = NL80211_CMD_GET_COALESCE,
13240 .doit = nl80211_get_coalesce,
13241 .policy = nl80211_policy,
13242 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13243 NL80211_FLAG_NEED_RTNL,
13244 },
13245 {
13246 .cmd = NL80211_CMD_SET_COALESCE,
13247 .doit = nl80211_set_coalesce,
13248 .policy = nl80211_policy,
13249 .flags = GENL_UNS_ADMIN_PERM,
13250 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13251 NL80211_FLAG_NEED_RTNL,
13252 },
13253 {
13254 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13255 .doit = nl80211_channel_switch,
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_VENDOR,
13263 .doit = nl80211_vendor_cmd,
13264 .dumpit = nl80211_vendor_cmd_dump,
13265 .policy = nl80211_policy,
13266 .flags = GENL_UNS_ADMIN_PERM,
13267 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13268 NL80211_FLAG_NEED_RTNL,
13269 },
13270 {
13271 .cmd = NL80211_CMD_SET_QOS_MAP,
13272 .doit = nl80211_set_qos_map,
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_ADD_TX_TS,
13280 .doit = nl80211_add_tx_ts,
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_DEL_TX_TS,
13288 .doit = nl80211_del_tx_ts,
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_TDLS_CHANNEL_SWITCH,
13296 .doit = nl80211_tdls_channel_switch,
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_TDLS_CANCEL_CHANNEL_SWITCH,
13304 .doit = nl80211_tdls_cancel_channel_switch,
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 {
13311 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13312 .doit = nl80211_set_multicast_to_unicast,
13313 .policy = nl80211_policy,
13314 .flags = GENL_UNS_ADMIN_PERM,
13315 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13316 NL80211_FLAG_NEED_RTNL,
13317 },
13318 {
13319 .cmd = NL80211_CMD_SET_PMK,
13320 .doit = nl80211_set_pmk,
13321 .policy = nl80211_policy,
13322 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13323 NL80211_FLAG_NEED_RTNL,
13324 },
13325 {
13326 .cmd = NL80211_CMD_DEL_PMK,
13327 .doit = nl80211_del_pmk,
13328 .policy = nl80211_policy,
13329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13330 NL80211_FLAG_NEED_RTNL,
13331 },
13332
13333 };
13334
13335 static struct genl_family nl80211_fam __ro_after_init = {
13336 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13337 .hdrsize = 0, /* no private header */
13338 .version = 1, /* no particular meaning now */
13339 .maxattr = NL80211_ATTR_MAX,
13340 .netnsok = true,
13341 .pre_doit = nl80211_pre_doit,
13342 .post_doit = nl80211_post_doit,
13343 .module = THIS_MODULE,
13344 .ops = nl80211_ops,
13345 .n_ops = ARRAY_SIZE(nl80211_ops),
13346 .mcgrps = nl80211_mcgrps,
13347 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13348 };
13349
13350 /* notification functions */
13351
13352 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13353 enum nl80211_commands cmd)
13354 {
13355 struct sk_buff *msg;
13356 struct nl80211_dump_wiphy_state state = {};
13357
13358 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13359 cmd != NL80211_CMD_DEL_WIPHY);
13360
13361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13362 if (!msg)
13363 return;
13364
13365 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13366 nlmsg_free(msg);
13367 return;
13368 }
13369
13370 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13371 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13372 }
13373
13374 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13375 struct wireless_dev *wdev,
13376 enum nl80211_commands cmd)
13377 {
13378 struct sk_buff *msg;
13379
13380 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13381 cmd != NL80211_CMD_DEL_INTERFACE);
13382
13383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13384 if (!msg)
13385 return;
13386
13387 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13388 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13389 nlmsg_free(msg);
13390 return;
13391 }
13392
13393 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13394 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13395 }
13396
13397 static int nl80211_add_scan_req(struct sk_buff *msg,
13398 struct cfg80211_registered_device *rdev)
13399 {
13400 struct cfg80211_scan_request *req = rdev->scan_req;
13401 struct nlattr *nest;
13402 int i;
13403
13404 if (WARN_ON(!req))
13405 return 0;
13406
13407 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13408 if (!nest)
13409 goto nla_put_failure;
13410 for (i = 0; i < req->n_ssids; i++) {
13411 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13412 goto nla_put_failure;
13413 }
13414 nla_nest_end(msg, nest);
13415
13416 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13417 if (!nest)
13418 goto nla_put_failure;
13419 for (i = 0; i < req->n_channels; i++) {
13420 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13421 goto nla_put_failure;
13422 }
13423 nla_nest_end(msg, nest);
13424
13425 if (req->ie &&
13426 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13427 goto nla_put_failure;
13428
13429 if (req->flags &&
13430 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13431 goto nla_put_failure;
13432
13433 if (req->info.scan_start_tsf &&
13434 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13435 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13436 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13437 req->info.tsf_bssid)))
13438 goto nla_put_failure;
13439
13440 return 0;
13441 nla_put_failure:
13442 return -ENOBUFS;
13443 }
13444
13445 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13446 struct cfg80211_registered_device *rdev,
13447 struct wireless_dev *wdev,
13448 u32 portid, u32 seq, int flags,
13449 u32 cmd)
13450 {
13451 void *hdr;
13452
13453 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13454 if (!hdr)
13455 return -1;
13456
13457 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13458 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13459 wdev->netdev->ifindex)) ||
13460 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13461 NL80211_ATTR_PAD))
13462 goto nla_put_failure;
13463
13464 /* ignore errors and send incomplete event anyway */
13465 nl80211_add_scan_req(msg, rdev);
13466
13467 genlmsg_end(msg, hdr);
13468 return 0;
13469
13470 nla_put_failure:
13471 genlmsg_cancel(msg, hdr);
13472 return -EMSGSIZE;
13473 }
13474
13475 static int
13476 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13477 struct cfg80211_sched_scan_request *req, u32 cmd)
13478 {
13479 void *hdr;
13480
13481 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13482 if (!hdr)
13483 return -1;
13484
13485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13486 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13487 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13488 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13489 NL80211_ATTR_PAD))
13490 goto nla_put_failure;
13491
13492 genlmsg_end(msg, hdr);
13493 return 0;
13494
13495 nla_put_failure:
13496 genlmsg_cancel(msg, hdr);
13497 return -EMSGSIZE;
13498 }
13499
13500 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13501 struct wireless_dev *wdev)
13502 {
13503 struct sk_buff *msg;
13504
13505 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13506 if (!msg)
13507 return;
13508
13509 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13510 NL80211_CMD_TRIGGER_SCAN) < 0) {
13511 nlmsg_free(msg);
13512 return;
13513 }
13514
13515 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13516 NL80211_MCGRP_SCAN, GFP_KERNEL);
13517 }
13518
13519 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13520 struct wireless_dev *wdev, bool aborted)
13521 {
13522 struct sk_buff *msg;
13523
13524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13525 if (!msg)
13526 return NULL;
13527
13528 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13529 aborted ? NL80211_CMD_SCAN_ABORTED :
13530 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13531 nlmsg_free(msg);
13532 return NULL;
13533 }
13534
13535 return msg;
13536 }
13537
13538 /* send message created by nl80211_build_scan_msg() */
13539 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13540 struct sk_buff *msg)
13541 {
13542 if (!msg)
13543 return;
13544
13545 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13546 NL80211_MCGRP_SCAN, GFP_KERNEL);
13547 }
13548
13549 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13550 {
13551 struct sk_buff *msg;
13552
13553 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13554 if (!msg)
13555 return;
13556
13557 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13558 nlmsg_free(msg);
13559 return;
13560 }
13561
13562 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13563 NL80211_MCGRP_SCAN, GFP_KERNEL);
13564 }
13565
13566 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13567 struct regulatory_request *request)
13568 {
13569 /* Userspace can always count this one always being set */
13570 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13571 goto nla_put_failure;
13572
13573 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13574 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13575 NL80211_REGDOM_TYPE_WORLD))
13576 goto nla_put_failure;
13577 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13578 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13579 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13580 goto nla_put_failure;
13581 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13582 request->intersect) {
13583 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13584 NL80211_REGDOM_TYPE_INTERSECTION))
13585 goto nla_put_failure;
13586 } else {
13587 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13588 NL80211_REGDOM_TYPE_COUNTRY) ||
13589 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13590 request->alpha2))
13591 goto nla_put_failure;
13592 }
13593
13594 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13595 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13596
13597 if (wiphy &&
13598 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13599 goto nla_put_failure;
13600
13601 if (wiphy &&
13602 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13603 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13604 goto nla_put_failure;
13605 }
13606
13607 return true;
13608
13609 nla_put_failure:
13610 return false;
13611 }
13612
13613 /*
13614 * This can happen on global regulatory changes or device specific settings
13615 * based on custom regulatory domains.
13616 */
13617 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13618 struct regulatory_request *request)
13619 {
13620 struct sk_buff *msg;
13621 void *hdr;
13622
13623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13624 if (!msg)
13625 return;
13626
13627 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13628 if (!hdr) {
13629 nlmsg_free(msg);
13630 return;
13631 }
13632
13633 if (nl80211_reg_change_event_fill(msg, request) == false)
13634 goto nla_put_failure;
13635
13636 genlmsg_end(msg, hdr);
13637
13638 rcu_read_lock();
13639 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13640 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13641 rcu_read_unlock();
13642
13643 return;
13644
13645 nla_put_failure:
13646 genlmsg_cancel(msg, hdr);
13647 nlmsg_free(msg);
13648 }
13649
13650 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13651 struct net_device *netdev,
13652 const u8 *buf, size_t len,
13653 enum nl80211_commands cmd, gfp_t gfp,
13654 int uapsd_queues)
13655 {
13656 struct sk_buff *msg;
13657 void *hdr;
13658
13659 msg = nlmsg_new(100 + len, gfp);
13660 if (!msg)
13661 return;
13662
13663 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13664 if (!hdr) {
13665 nlmsg_free(msg);
13666 return;
13667 }
13668
13669 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13670 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13671 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13672 goto nla_put_failure;
13673
13674 if (uapsd_queues >= 0) {
13675 struct nlattr *nla_wmm =
13676 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13677 if (!nla_wmm)
13678 goto nla_put_failure;
13679
13680 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13681 uapsd_queues))
13682 goto nla_put_failure;
13683
13684 nla_nest_end(msg, nla_wmm);
13685 }
13686
13687 genlmsg_end(msg, hdr);
13688
13689 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13690 NL80211_MCGRP_MLME, gfp);
13691 return;
13692
13693 nla_put_failure:
13694 genlmsg_cancel(msg, hdr);
13695 nlmsg_free(msg);
13696 }
13697
13698 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13699 struct net_device *netdev, const u8 *buf,
13700 size_t len, gfp_t gfp)
13701 {
13702 nl80211_send_mlme_event(rdev, netdev, buf, len,
13703 NL80211_CMD_AUTHENTICATE, gfp, -1);
13704 }
13705
13706 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13707 struct net_device *netdev, const u8 *buf,
13708 size_t len, gfp_t gfp, int uapsd_queues)
13709 {
13710 nl80211_send_mlme_event(rdev, netdev, buf, len,
13711 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13712 }
13713
13714 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13715 struct net_device *netdev, const u8 *buf,
13716 size_t len, gfp_t gfp)
13717 {
13718 nl80211_send_mlme_event(rdev, netdev, buf, len,
13719 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13720 }
13721
13722 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13723 struct net_device *netdev, const u8 *buf,
13724 size_t len, gfp_t gfp)
13725 {
13726 nl80211_send_mlme_event(rdev, netdev, buf, len,
13727 NL80211_CMD_DISASSOCIATE, gfp, -1);
13728 }
13729
13730 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13731 size_t len)
13732 {
13733 struct wireless_dev *wdev = dev->ieee80211_ptr;
13734 struct wiphy *wiphy = wdev->wiphy;
13735 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13736 const struct ieee80211_mgmt *mgmt = (void *)buf;
13737 u32 cmd;
13738
13739 if (WARN_ON(len < 2))
13740 return;
13741
13742 if (ieee80211_is_deauth(mgmt->frame_control))
13743 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13744 else
13745 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13746
13747 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13748 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13749 }
13750 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13751
13752 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13753 struct net_device *netdev, int cmd,
13754 const u8 *addr, gfp_t gfp)
13755 {
13756 struct sk_buff *msg;
13757 void *hdr;
13758
13759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13760 if (!msg)
13761 return;
13762
13763 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13764 if (!hdr) {
13765 nlmsg_free(msg);
13766 return;
13767 }
13768
13769 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13770 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13771 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13772 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13773 goto nla_put_failure;
13774
13775 genlmsg_end(msg, hdr);
13776
13777 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13778 NL80211_MCGRP_MLME, gfp);
13779 return;
13780
13781 nla_put_failure:
13782 genlmsg_cancel(msg, hdr);
13783 nlmsg_free(msg);
13784 }
13785
13786 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13787 struct net_device *netdev, const u8 *addr,
13788 gfp_t gfp)
13789 {
13790 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13791 addr, gfp);
13792 }
13793
13794 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13795 struct net_device *netdev, const u8 *addr,
13796 gfp_t gfp)
13797 {
13798 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13799 addr, gfp);
13800 }
13801
13802 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13803 struct net_device *netdev,
13804 struct cfg80211_connect_resp_params *cr,
13805 gfp_t gfp)
13806 {
13807 struct sk_buff *msg;
13808 void *hdr;
13809
13810 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13811 cr->fils_kek_len + cr->pmk_len +
13812 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13813 if (!msg)
13814 return;
13815
13816 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13817 if (!hdr) {
13818 nlmsg_free(msg);
13819 return;
13820 }
13821
13822 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13823 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13824 (cr->bssid &&
13825 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13826 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13827 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13828 cr->status) ||
13829 (cr->status < 0 &&
13830 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13831 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13832 cr->timeout_reason))) ||
13833 (cr->req_ie &&
13834 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13835 (cr->resp_ie &&
13836 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13837 cr->resp_ie)) ||
13838 (cr->update_erp_next_seq_num &&
13839 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13840 cr->fils_erp_next_seq_num)) ||
13841 (cr->status == WLAN_STATUS_SUCCESS &&
13842 ((cr->fils_kek &&
13843 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13844 cr->fils_kek)) ||
13845 (cr->pmk &&
13846 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13847 (cr->pmkid &&
13848 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13849 goto nla_put_failure;
13850
13851 genlmsg_end(msg, hdr);
13852
13853 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13854 NL80211_MCGRP_MLME, gfp);
13855 return;
13856
13857 nla_put_failure:
13858 genlmsg_cancel(msg, hdr);
13859 nlmsg_free(msg);
13860 }
13861
13862 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13863 struct net_device *netdev,
13864 struct cfg80211_roam_info *info, gfp_t gfp)
13865 {
13866 struct sk_buff *msg;
13867 void *hdr;
13868 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13869
13870 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13871 if (!msg)
13872 return;
13873
13874 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13875 if (!hdr) {
13876 nlmsg_free(msg);
13877 return;
13878 }
13879
13880 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13881 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13882 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13883 (info->req_ie &&
13884 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13885 info->req_ie)) ||
13886 (info->resp_ie &&
13887 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13888 info->resp_ie)))
13889 goto nla_put_failure;
13890
13891 genlmsg_end(msg, hdr);
13892
13893 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13894 NL80211_MCGRP_MLME, gfp);
13895 return;
13896
13897 nla_put_failure:
13898 genlmsg_cancel(msg, hdr);
13899 nlmsg_free(msg);
13900 }
13901
13902 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13903 struct net_device *netdev, const u8 *bssid)
13904 {
13905 struct sk_buff *msg;
13906 void *hdr;
13907
13908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13909 if (!msg)
13910 return;
13911
13912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13913 if (!hdr) {
13914 nlmsg_free(msg);
13915 return;
13916 }
13917
13918 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13919 goto nla_put_failure;
13920
13921 genlmsg_end(msg, hdr);
13922
13923 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13924 NL80211_MCGRP_MLME, GFP_KERNEL);
13925 return;
13926
13927 nla_put_failure:
13928 genlmsg_cancel(msg, hdr);
13929 nlmsg_free(msg);
13930 }
13931
13932 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13933 struct net_device *netdev, u16 reason,
13934 const u8 *ie, size_t ie_len, bool from_ap)
13935 {
13936 struct sk_buff *msg;
13937 void *hdr;
13938
13939 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13940 if (!msg)
13941 return;
13942
13943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13944 if (!hdr) {
13945 nlmsg_free(msg);
13946 return;
13947 }
13948
13949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13951 (from_ap && reason &&
13952 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13953 (from_ap &&
13954 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13955 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13956 goto nla_put_failure;
13957
13958 genlmsg_end(msg, hdr);
13959
13960 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13961 NL80211_MCGRP_MLME, GFP_KERNEL);
13962 return;
13963
13964 nla_put_failure:
13965 genlmsg_cancel(msg, hdr);
13966 nlmsg_free(msg);
13967 }
13968
13969 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13970 struct net_device *netdev, const u8 *bssid,
13971 gfp_t gfp)
13972 {
13973 struct sk_buff *msg;
13974 void *hdr;
13975
13976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13977 if (!msg)
13978 return;
13979
13980 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13981 if (!hdr) {
13982 nlmsg_free(msg);
13983 return;
13984 }
13985
13986 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13987 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13988 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13989 goto nla_put_failure;
13990
13991 genlmsg_end(msg, hdr);
13992
13993 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13994 NL80211_MCGRP_MLME, gfp);
13995 return;
13996
13997 nla_put_failure:
13998 genlmsg_cancel(msg, hdr);
13999 nlmsg_free(msg);
14000 }
14001
14002 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14003 const u8* ie, u8 ie_len, gfp_t gfp)
14004 {
14005 struct wireless_dev *wdev = dev->ieee80211_ptr;
14006 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14007 struct sk_buff *msg;
14008 void *hdr;
14009
14010 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14011 return;
14012
14013 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14014
14015 msg = nlmsg_new(100 + ie_len, gfp);
14016 if (!msg)
14017 return;
14018
14019 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14020 if (!hdr) {
14021 nlmsg_free(msg);
14022 return;
14023 }
14024
14025 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14026 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14027 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14028 (ie_len && ie &&
14029 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14030 goto nla_put_failure;
14031
14032 genlmsg_end(msg, hdr);
14033
14034 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14035 NL80211_MCGRP_MLME, gfp);
14036 return;
14037
14038 nla_put_failure:
14039 genlmsg_cancel(msg, hdr);
14040 nlmsg_free(msg);
14041 }
14042 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14043
14044 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14045 struct net_device *netdev, const u8 *addr,
14046 enum nl80211_key_type key_type, int key_id,
14047 const u8 *tsc, gfp_t gfp)
14048 {
14049 struct sk_buff *msg;
14050 void *hdr;
14051
14052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14053 if (!msg)
14054 return;
14055
14056 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14057 if (!hdr) {
14058 nlmsg_free(msg);
14059 return;
14060 }
14061
14062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14063 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14064 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14065 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14066 (key_id != -1 &&
14067 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14068 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14069 goto nla_put_failure;
14070
14071 genlmsg_end(msg, hdr);
14072
14073 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14074 NL80211_MCGRP_MLME, gfp);
14075 return;
14076
14077 nla_put_failure:
14078 genlmsg_cancel(msg, hdr);
14079 nlmsg_free(msg);
14080 }
14081
14082 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14083 struct ieee80211_channel *channel_before,
14084 struct ieee80211_channel *channel_after)
14085 {
14086 struct sk_buff *msg;
14087 void *hdr;
14088 struct nlattr *nl_freq;
14089
14090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14091 if (!msg)
14092 return;
14093
14094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14095 if (!hdr) {
14096 nlmsg_free(msg);
14097 return;
14098 }
14099
14100 /*
14101 * Since we are applying the beacon hint to a wiphy we know its
14102 * wiphy_idx is valid
14103 */
14104 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14105 goto nla_put_failure;
14106
14107 /* Before */
14108 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14109 if (!nl_freq)
14110 goto nla_put_failure;
14111 if (nl80211_msg_put_channel(msg, channel_before, false))
14112 goto nla_put_failure;
14113 nla_nest_end(msg, nl_freq);
14114
14115 /* After */
14116 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14117 if (!nl_freq)
14118 goto nla_put_failure;
14119 if (nl80211_msg_put_channel(msg, channel_after, false))
14120 goto nla_put_failure;
14121 nla_nest_end(msg, nl_freq);
14122
14123 genlmsg_end(msg, hdr);
14124
14125 rcu_read_lock();
14126 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14127 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14128 rcu_read_unlock();
14129
14130 return;
14131
14132 nla_put_failure:
14133 genlmsg_cancel(msg, hdr);
14134 nlmsg_free(msg);
14135 }
14136
14137 static void nl80211_send_remain_on_chan_event(
14138 int cmd, struct cfg80211_registered_device *rdev,
14139 struct wireless_dev *wdev, u64 cookie,
14140 struct ieee80211_channel *chan,
14141 unsigned int duration, gfp_t gfp)
14142 {
14143 struct sk_buff *msg;
14144 void *hdr;
14145
14146 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14147 if (!msg)
14148 return;
14149
14150 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14151 if (!hdr) {
14152 nlmsg_free(msg);
14153 return;
14154 }
14155
14156 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14157 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14158 wdev->netdev->ifindex)) ||
14159 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14160 NL80211_ATTR_PAD) ||
14161 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14162 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14163 NL80211_CHAN_NO_HT) ||
14164 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14165 NL80211_ATTR_PAD))
14166 goto nla_put_failure;
14167
14168 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14169 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14170 goto nla_put_failure;
14171
14172 genlmsg_end(msg, hdr);
14173
14174 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14175 NL80211_MCGRP_MLME, gfp);
14176 return;
14177
14178 nla_put_failure:
14179 genlmsg_cancel(msg, hdr);
14180 nlmsg_free(msg);
14181 }
14182
14183 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14184 struct ieee80211_channel *chan,
14185 unsigned int duration, gfp_t gfp)
14186 {
14187 struct wiphy *wiphy = wdev->wiphy;
14188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14189
14190 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14191 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14192 rdev, wdev, cookie, chan,
14193 duration, gfp);
14194 }
14195 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14196
14197 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14198 struct ieee80211_channel *chan,
14199 gfp_t gfp)
14200 {
14201 struct wiphy *wiphy = wdev->wiphy;
14202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14203
14204 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14205 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14206 rdev, wdev, cookie, chan, 0, gfp);
14207 }
14208 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14209
14210 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14211 struct station_info *sinfo, gfp_t gfp)
14212 {
14213 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14214 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14215 struct sk_buff *msg;
14216
14217 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14218
14219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14220 if (!msg)
14221 return;
14222
14223 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14224 rdev, dev, mac_addr, sinfo) < 0) {
14225 nlmsg_free(msg);
14226 return;
14227 }
14228
14229 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14230 NL80211_MCGRP_MLME, gfp);
14231 }
14232 EXPORT_SYMBOL(cfg80211_new_sta);
14233
14234 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14235 struct station_info *sinfo, gfp_t gfp)
14236 {
14237 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14238 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14239 struct sk_buff *msg;
14240 struct station_info empty_sinfo = {};
14241
14242 if (!sinfo)
14243 sinfo = &empty_sinfo;
14244
14245 trace_cfg80211_del_sta(dev, mac_addr);
14246
14247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14248 if (!msg)
14249 return;
14250
14251 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14252 rdev, dev, mac_addr, sinfo) < 0) {
14253 nlmsg_free(msg);
14254 return;
14255 }
14256
14257 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14258 NL80211_MCGRP_MLME, gfp);
14259 }
14260 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14261
14262 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14263 enum nl80211_connect_failed_reason reason,
14264 gfp_t gfp)
14265 {
14266 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14267 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14268 struct sk_buff *msg;
14269 void *hdr;
14270
14271 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14272 if (!msg)
14273 return;
14274
14275 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14276 if (!hdr) {
14277 nlmsg_free(msg);
14278 return;
14279 }
14280
14281 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14282 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14283 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14284 goto nla_put_failure;
14285
14286 genlmsg_end(msg, hdr);
14287
14288 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14289 NL80211_MCGRP_MLME, gfp);
14290 return;
14291
14292 nla_put_failure:
14293 genlmsg_cancel(msg, hdr);
14294 nlmsg_free(msg);
14295 }
14296 EXPORT_SYMBOL(cfg80211_conn_failed);
14297
14298 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14299 const u8 *addr, gfp_t gfp)
14300 {
14301 struct wireless_dev *wdev = dev->ieee80211_ptr;
14302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14303 struct sk_buff *msg;
14304 void *hdr;
14305 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14306
14307 if (!nlportid)
14308 return false;
14309
14310 msg = nlmsg_new(100, gfp);
14311 if (!msg)
14312 return true;
14313
14314 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14315 if (!hdr) {
14316 nlmsg_free(msg);
14317 return true;
14318 }
14319
14320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14321 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14322 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14323 goto nla_put_failure;
14324
14325 genlmsg_end(msg, hdr);
14326 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14327 return true;
14328
14329 nla_put_failure:
14330 genlmsg_cancel(msg, hdr);
14331 nlmsg_free(msg);
14332 return true;
14333 }
14334
14335 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14336 const u8 *addr, gfp_t gfp)
14337 {
14338 struct wireless_dev *wdev = dev->ieee80211_ptr;
14339 bool ret;
14340
14341 trace_cfg80211_rx_spurious_frame(dev, addr);
14342
14343 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14344 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14345 trace_cfg80211_return_bool(false);
14346 return false;
14347 }
14348 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14349 addr, gfp);
14350 trace_cfg80211_return_bool(ret);
14351 return ret;
14352 }
14353 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14354
14355 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14356 const u8 *addr, gfp_t gfp)
14357 {
14358 struct wireless_dev *wdev = dev->ieee80211_ptr;
14359 bool ret;
14360
14361 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14362
14363 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14364 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14365 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14366 trace_cfg80211_return_bool(false);
14367 return false;
14368 }
14369 ret = __nl80211_unexpected_frame(dev,
14370 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14371 addr, gfp);
14372 trace_cfg80211_return_bool(ret);
14373 return ret;
14374 }
14375 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14376
14377 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14378 struct wireless_dev *wdev, u32 nlportid,
14379 int freq, int sig_dbm,
14380 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14381 {
14382 struct net_device *netdev = wdev->netdev;
14383 struct sk_buff *msg;
14384 void *hdr;
14385
14386 msg = nlmsg_new(100 + len, gfp);
14387 if (!msg)
14388 return -ENOMEM;
14389
14390 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14391 if (!hdr) {
14392 nlmsg_free(msg);
14393 return -ENOMEM;
14394 }
14395
14396 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14397 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14398 netdev->ifindex)) ||
14399 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14400 NL80211_ATTR_PAD) ||
14401 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14402 (sig_dbm &&
14403 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14404 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14405 (flags &&
14406 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14407 goto nla_put_failure;
14408
14409 genlmsg_end(msg, hdr);
14410
14411 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14412
14413 nla_put_failure:
14414 genlmsg_cancel(msg, hdr);
14415 nlmsg_free(msg);
14416 return -ENOBUFS;
14417 }
14418
14419 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14420 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14421 {
14422 struct wiphy *wiphy = wdev->wiphy;
14423 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14424 struct net_device *netdev = wdev->netdev;
14425 struct sk_buff *msg;
14426 void *hdr;
14427
14428 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14429
14430 msg = nlmsg_new(100 + len, gfp);
14431 if (!msg)
14432 return;
14433
14434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14435 if (!hdr) {
14436 nlmsg_free(msg);
14437 return;
14438 }
14439
14440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14441 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14442 netdev->ifindex)) ||
14443 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14444 NL80211_ATTR_PAD) ||
14445 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14446 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14447 NL80211_ATTR_PAD) ||
14448 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14449 goto nla_put_failure;
14450
14451 genlmsg_end(msg, hdr);
14452
14453 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14454 NL80211_MCGRP_MLME, gfp);
14455 return;
14456
14457 nla_put_failure:
14458 genlmsg_cancel(msg, hdr);
14459 nlmsg_free(msg);
14460 }
14461 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14462
14463 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14464 const char *mac, gfp_t gfp)
14465 {
14466 struct wireless_dev *wdev = dev->ieee80211_ptr;
14467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14468 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14469 void **cb;
14470
14471 if (!msg)
14472 return NULL;
14473
14474 cb = (void **)msg->cb;
14475
14476 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14477 if (!cb[0]) {
14478 nlmsg_free(msg);
14479 return NULL;
14480 }
14481
14482 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14483 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14484 goto nla_put_failure;
14485
14486 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14487 goto nla_put_failure;
14488
14489 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14490 if (!cb[1])
14491 goto nla_put_failure;
14492
14493 cb[2] = rdev;
14494
14495 return msg;
14496 nla_put_failure:
14497 nlmsg_free(msg);
14498 return NULL;
14499 }
14500
14501 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14502 {
14503 void **cb = (void **)msg->cb;
14504 struct cfg80211_registered_device *rdev = cb[2];
14505
14506 nla_nest_end(msg, cb[1]);
14507 genlmsg_end(msg, cb[0]);
14508
14509 memset(msg->cb, 0, sizeof(msg->cb));
14510
14511 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14512 NL80211_MCGRP_MLME, gfp);
14513 }
14514
14515 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14516 enum nl80211_cqm_rssi_threshold_event rssi_event,
14517 s32 rssi_level, gfp_t gfp)
14518 {
14519 struct sk_buff *msg;
14520 struct wireless_dev *wdev = dev->ieee80211_ptr;
14521 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14522
14523 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14524
14525 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14526 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14527 return;
14528
14529 if (wdev->cqm_config) {
14530 wdev->cqm_config->last_rssi_event_value = rssi_level;
14531
14532 cfg80211_cqm_rssi_update(rdev, dev);
14533
14534 if (rssi_level == 0)
14535 rssi_level = wdev->cqm_config->last_rssi_event_value;
14536 }
14537
14538 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14539 if (!msg)
14540 return;
14541
14542 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14543 rssi_event))
14544 goto nla_put_failure;
14545
14546 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14547 rssi_level))
14548 goto nla_put_failure;
14549
14550 cfg80211_send_cqm(msg, gfp);
14551
14552 return;
14553
14554 nla_put_failure:
14555 nlmsg_free(msg);
14556 }
14557 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14558
14559 void cfg80211_cqm_txe_notify(struct net_device *dev,
14560 const u8 *peer, u32 num_packets,
14561 u32 rate, u32 intvl, gfp_t gfp)
14562 {
14563 struct sk_buff *msg;
14564
14565 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14566 if (!msg)
14567 return;
14568
14569 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14570 goto nla_put_failure;
14571
14572 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14573 goto nla_put_failure;
14574
14575 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14576 goto nla_put_failure;
14577
14578 cfg80211_send_cqm(msg, gfp);
14579 return;
14580
14581 nla_put_failure:
14582 nlmsg_free(msg);
14583 }
14584 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14585
14586 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14587 const u8 *peer, u32 num_packets, gfp_t gfp)
14588 {
14589 struct sk_buff *msg;
14590
14591 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14592
14593 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14594 if (!msg)
14595 return;
14596
14597 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14598 goto nla_put_failure;
14599
14600 cfg80211_send_cqm(msg, gfp);
14601 return;
14602
14603 nla_put_failure:
14604 nlmsg_free(msg);
14605 }
14606 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14607
14608 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14609 {
14610 struct sk_buff *msg;
14611
14612 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14613 if (!msg)
14614 return;
14615
14616 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14617 goto nla_put_failure;
14618
14619 cfg80211_send_cqm(msg, gfp);
14620 return;
14621
14622 nla_put_failure:
14623 nlmsg_free(msg);
14624 }
14625 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14626
14627 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14628 struct net_device *netdev, const u8 *bssid,
14629 const u8 *replay_ctr, gfp_t gfp)
14630 {
14631 struct sk_buff *msg;
14632 struct nlattr *rekey_attr;
14633 void *hdr;
14634
14635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14636 if (!msg)
14637 return;
14638
14639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14640 if (!hdr) {
14641 nlmsg_free(msg);
14642 return;
14643 }
14644
14645 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14646 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14647 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14648 goto nla_put_failure;
14649
14650 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14651 if (!rekey_attr)
14652 goto nla_put_failure;
14653
14654 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14655 NL80211_REPLAY_CTR_LEN, replay_ctr))
14656 goto nla_put_failure;
14657
14658 nla_nest_end(msg, rekey_attr);
14659
14660 genlmsg_end(msg, hdr);
14661
14662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14663 NL80211_MCGRP_MLME, gfp);
14664 return;
14665
14666 nla_put_failure:
14667 genlmsg_cancel(msg, hdr);
14668 nlmsg_free(msg);
14669 }
14670
14671 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14672 const u8 *replay_ctr, gfp_t gfp)
14673 {
14674 struct wireless_dev *wdev = dev->ieee80211_ptr;
14675 struct wiphy *wiphy = wdev->wiphy;
14676 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14677
14678 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14679 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14680 }
14681 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14682
14683 static void
14684 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14685 struct net_device *netdev, int index,
14686 const u8 *bssid, bool preauth, gfp_t gfp)
14687 {
14688 struct sk_buff *msg;
14689 struct nlattr *attr;
14690 void *hdr;
14691
14692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14693 if (!msg)
14694 return;
14695
14696 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14697 if (!hdr) {
14698 nlmsg_free(msg);
14699 return;
14700 }
14701
14702 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14703 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14704 goto nla_put_failure;
14705
14706 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14707 if (!attr)
14708 goto nla_put_failure;
14709
14710 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14711 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14712 (preauth &&
14713 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14714 goto nla_put_failure;
14715
14716 nla_nest_end(msg, attr);
14717
14718 genlmsg_end(msg, hdr);
14719
14720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14721 NL80211_MCGRP_MLME, gfp);
14722 return;
14723
14724 nla_put_failure:
14725 genlmsg_cancel(msg, hdr);
14726 nlmsg_free(msg);
14727 }
14728
14729 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14730 const u8 *bssid, bool preauth, gfp_t gfp)
14731 {
14732 struct wireless_dev *wdev = dev->ieee80211_ptr;
14733 struct wiphy *wiphy = wdev->wiphy;
14734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14735
14736 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14737 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14738 }
14739 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14740
14741 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14742 struct net_device *netdev,
14743 struct cfg80211_chan_def *chandef,
14744 gfp_t gfp,
14745 enum nl80211_commands notif,
14746 u8 count)
14747 {
14748 struct sk_buff *msg;
14749 void *hdr;
14750
14751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14752 if (!msg)
14753 return;
14754
14755 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14756 if (!hdr) {
14757 nlmsg_free(msg);
14758 return;
14759 }
14760
14761 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14762 goto nla_put_failure;
14763
14764 if (nl80211_send_chandef(msg, chandef))
14765 goto nla_put_failure;
14766
14767 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14768 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14769 goto nla_put_failure;
14770
14771 genlmsg_end(msg, hdr);
14772
14773 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14774 NL80211_MCGRP_MLME, gfp);
14775 return;
14776
14777 nla_put_failure:
14778 genlmsg_cancel(msg, hdr);
14779 nlmsg_free(msg);
14780 }
14781
14782 void cfg80211_ch_switch_notify(struct net_device *dev,
14783 struct cfg80211_chan_def *chandef)
14784 {
14785 struct wireless_dev *wdev = dev->ieee80211_ptr;
14786 struct wiphy *wiphy = wdev->wiphy;
14787 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14788
14789 ASSERT_WDEV_LOCK(wdev);
14790
14791 trace_cfg80211_ch_switch_notify(dev, chandef);
14792
14793 wdev->chandef = *chandef;
14794 wdev->preset_chandef = *chandef;
14795 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14796 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14797 }
14798 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14799
14800 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14801 struct cfg80211_chan_def *chandef,
14802 u8 count)
14803 {
14804 struct wireless_dev *wdev = dev->ieee80211_ptr;
14805 struct wiphy *wiphy = wdev->wiphy;
14806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14807
14808 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14809
14810 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14811 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14812 }
14813 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14814
14815 void
14816 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14817 const struct cfg80211_chan_def *chandef,
14818 enum nl80211_radar_event event,
14819 struct net_device *netdev, gfp_t gfp)
14820 {
14821 struct sk_buff *msg;
14822 void *hdr;
14823
14824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14825 if (!msg)
14826 return;
14827
14828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14829 if (!hdr) {
14830 nlmsg_free(msg);
14831 return;
14832 }
14833
14834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14835 goto nla_put_failure;
14836
14837 /* NOP and radar events don't need a netdev parameter */
14838 if (netdev) {
14839 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14840
14841 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14842 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14843 NL80211_ATTR_PAD))
14844 goto nla_put_failure;
14845 }
14846
14847 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14848 goto nla_put_failure;
14849
14850 if (nl80211_send_chandef(msg, chandef))
14851 goto nla_put_failure;
14852
14853 genlmsg_end(msg, hdr);
14854
14855 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14856 NL80211_MCGRP_MLME, gfp);
14857 return;
14858
14859 nla_put_failure:
14860 genlmsg_cancel(msg, hdr);
14861 nlmsg_free(msg);
14862 }
14863
14864 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14865 u64 cookie, bool acked, gfp_t gfp)
14866 {
14867 struct wireless_dev *wdev = dev->ieee80211_ptr;
14868 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14869 struct sk_buff *msg;
14870 void *hdr;
14871
14872 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14873
14874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14875
14876 if (!msg)
14877 return;
14878
14879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14880 if (!hdr) {
14881 nlmsg_free(msg);
14882 return;
14883 }
14884
14885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14887 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14888 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14889 NL80211_ATTR_PAD) ||
14890 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14891 goto nla_put_failure;
14892
14893 genlmsg_end(msg, hdr);
14894
14895 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14896 NL80211_MCGRP_MLME, gfp);
14897 return;
14898
14899 nla_put_failure:
14900 genlmsg_cancel(msg, hdr);
14901 nlmsg_free(msg);
14902 }
14903 EXPORT_SYMBOL(cfg80211_probe_status);
14904
14905 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14906 const u8 *frame, size_t len,
14907 int freq, int sig_dbm)
14908 {
14909 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14910 struct sk_buff *msg;
14911 void *hdr;
14912 struct cfg80211_beacon_registration *reg;
14913
14914 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14915
14916 spin_lock_bh(&rdev->beacon_registrations_lock);
14917 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14918 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14919 if (!msg) {
14920 spin_unlock_bh(&rdev->beacon_registrations_lock);
14921 return;
14922 }
14923
14924 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14925 if (!hdr)
14926 goto nla_put_failure;
14927
14928 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14929 (freq &&
14930 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14931 (sig_dbm &&
14932 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14933 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14934 goto nla_put_failure;
14935
14936 genlmsg_end(msg, hdr);
14937
14938 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14939 }
14940 spin_unlock_bh(&rdev->beacon_registrations_lock);
14941 return;
14942
14943 nla_put_failure:
14944 spin_unlock_bh(&rdev->beacon_registrations_lock);
14945 if (hdr)
14946 genlmsg_cancel(msg, hdr);
14947 nlmsg_free(msg);
14948 }
14949 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14950
14951 #ifdef CONFIG_PM
14952 static int cfg80211_net_detect_results(struct sk_buff *msg,
14953 struct cfg80211_wowlan_wakeup *wakeup)
14954 {
14955 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14956 struct nlattr *nl_results, *nl_match, *nl_freqs;
14957 int i, j;
14958
14959 nl_results = nla_nest_start(
14960 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14961 if (!nl_results)
14962 return -EMSGSIZE;
14963
14964 for (i = 0; i < nd->n_matches; i++) {
14965 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14966
14967 nl_match = nla_nest_start(msg, i);
14968 if (!nl_match)
14969 break;
14970
14971 /* The SSID attribute is optional in nl80211, but for
14972 * simplicity reasons it's always present in the
14973 * cfg80211 structure. If a driver can't pass the
14974 * SSID, that needs to be changed. A zero length SSID
14975 * is still a valid SSID (wildcard), so it cannot be
14976 * used for this purpose.
14977 */
14978 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14979 match->ssid.ssid)) {
14980 nla_nest_cancel(msg, nl_match);
14981 goto out;
14982 }
14983
14984 if (match->n_channels) {
14985 nl_freqs = nla_nest_start(
14986 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14987 if (!nl_freqs) {
14988 nla_nest_cancel(msg, nl_match);
14989 goto out;
14990 }
14991
14992 for (j = 0; j < match->n_channels; j++) {
14993 if (nla_put_u32(msg, j, match->channels[j])) {
14994 nla_nest_cancel(msg, nl_freqs);
14995 nla_nest_cancel(msg, nl_match);
14996 goto out;
14997 }
14998 }
14999
15000 nla_nest_end(msg, nl_freqs);
15001 }
15002
15003 nla_nest_end(msg, nl_match);
15004 }
15005
15006 out:
15007 nla_nest_end(msg, nl_results);
15008 return 0;
15009 }
15010
15011 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15012 struct cfg80211_wowlan_wakeup *wakeup,
15013 gfp_t gfp)
15014 {
15015 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15016 struct sk_buff *msg;
15017 void *hdr;
15018 int size = 200;
15019
15020 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15021
15022 if (wakeup)
15023 size += wakeup->packet_present_len;
15024
15025 msg = nlmsg_new(size, gfp);
15026 if (!msg)
15027 return;
15028
15029 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15030 if (!hdr)
15031 goto free_msg;
15032
15033 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15034 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15035 NL80211_ATTR_PAD))
15036 goto free_msg;
15037
15038 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15039 wdev->netdev->ifindex))
15040 goto free_msg;
15041
15042 if (wakeup) {
15043 struct nlattr *reasons;
15044
15045 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15046 if (!reasons)
15047 goto free_msg;
15048
15049 if (wakeup->disconnect &&
15050 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15051 goto free_msg;
15052 if (wakeup->magic_pkt &&
15053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15054 goto free_msg;
15055 if (wakeup->gtk_rekey_failure &&
15056 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15057 goto free_msg;
15058 if (wakeup->eap_identity_req &&
15059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15060 goto free_msg;
15061 if (wakeup->four_way_handshake &&
15062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15063 goto free_msg;
15064 if (wakeup->rfkill_release &&
15065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15066 goto free_msg;
15067
15068 if (wakeup->pattern_idx >= 0 &&
15069 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15070 wakeup->pattern_idx))
15071 goto free_msg;
15072
15073 if (wakeup->tcp_match &&
15074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15075 goto free_msg;
15076
15077 if (wakeup->tcp_connlost &&
15078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15079 goto free_msg;
15080
15081 if (wakeup->tcp_nomoretokens &&
15082 nla_put_flag(msg,
15083 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15084 goto free_msg;
15085
15086 if (wakeup->packet) {
15087 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15088 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15089
15090 if (!wakeup->packet_80211) {
15091 pkt_attr =
15092 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15093 len_attr =
15094 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15095 }
15096
15097 if (wakeup->packet_len &&
15098 nla_put_u32(msg, len_attr, wakeup->packet_len))
15099 goto free_msg;
15100
15101 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15102 wakeup->packet))
15103 goto free_msg;
15104 }
15105
15106 if (wakeup->net_detect &&
15107 cfg80211_net_detect_results(msg, wakeup))
15108 goto free_msg;
15109
15110 nla_nest_end(msg, reasons);
15111 }
15112
15113 genlmsg_end(msg, hdr);
15114
15115 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15116 NL80211_MCGRP_MLME, gfp);
15117 return;
15118
15119 free_msg:
15120 nlmsg_free(msg);
15121 }
15122 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15123 #endif
15124
15125 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15126 enum nl80211_tdls_operation oper,
15127 u16 reason_code, gfp_t gfp)
15128 {
15129 struct wireless_dev *wdev = dev->ieee80211_ptr;
15130 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15131 struct sk_buff *msg;
15132 void *hdr;
15133
15134 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15135 reason_code);
15136
15137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15138 if (!msg)
15139 return;
15140
15141 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15142 if (!hdr) {
15143 nlmsg_free(msg);
15144 return;
15145 }
15146
15147 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15148 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15149 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15150 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15151 (reason_code > 0 &&
15152 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15153 goto nla_put_failure;
15154
15155 genlmsg_end(msg, hdr);
15156
15157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15158 NL80211_MCGRP_MLME, gfp);
15159 return;
15160
15161 nla_put_failure:
15162 genlmsg_cancel(msg, hdr);
15163 nlmsg_free(msg);
15164 }
15165 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15166
15167 static int nl80211_netlink_notify(struct notifier_block * nb,
15168 unsigned long state,
15169 void *_notify)
15170 {
15171 struct netlink_notify *notify = _notify;
15172 struct cfg80211_registered_device *rdev;
15173 struct wireless_dev *wdev;
15174 struct cfg80211_beacon_registration *reg, *tmp;
15175
15176 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15177 return NOTIFY_DONE;
15178
15179 rcu_read_lock();
15180
15181 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15182 struct cfg80211_sched_scan_request *sched_scan_req;
15183
15184 list_for_each_entry_rcu(sched_scan_req,
15185 &rdev->sched_scan_req_list,
15186 list) {
15187 if (sched_scan_req->owner_nlportid == notify->portid) {
15188 sched_scan_req->nl_owner_dead = true;
15189 schedule_work(&rdev->sched_scan_stop_wk);
15190 }
15191 }
15192
15193 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15194 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15195
15196 if (wdev->owner_nlportid == notify->portid) {
15197 wdev->nl_owner_dead = true;
15198 schedule_work(&rdev->destroy_work);
15199 } else if (wdev->conn_owner_nlportid == notify->portid) {
15200 schedule_work(&wdev->disconnect_wk);
15201 }
15202 }
15203
15204 spin_lock_bh(&rdev->beacon_registrations_lock);
15205 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15206 list) {
15207 if (reg->nlportid == notify->portid) {
15208 list_del(&reg->list);
15209 kfree(reg);
15210 break;
15211 }
15212 }
15213 spin_unlock_bh(&rdev->beacon_registrations_lock);
15214 }
15215
15216 rcu_read_unlock();
15217
15218 /*
15219 * It is possible that the user space process that is controlling the
15220 * indoor setting disappeared, so notify the regulatory core.
15221 */
15222 regulatory_netlink_notify(notify->portid);
15223 return NOTIFY_OK;
15224 }
15225
15226 static struct notifier_block nl80211_netlink_notifier = {
15227 .notifier_call = nl80211_netlink_notify,
15228 };
15229
15230 void cfg80211_ft_event(struct net_device *netdev,
15231 struct cfg80211_ft_event_params *ft_event)
15232 {
15233 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15234 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15235 struct sk_buff *msg;
15236 void *hdr;
15237
15238 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15239
15240 if (!ft_event->target_ap)
15241 return;
15242
15243 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15244 if (!msg)
15245 return;
15246
15247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15248 if (!hdr)
15249 goto out;
15250
15251 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15252 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15253 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15254 goto out;
15255
15256 if (ft_event->ies &&
15257 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15258 goto out;
15259 if (ft_event->ric_ies &&
15260 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15261 ft_event->ric_ies))
15262 goto out;
15263
15264 genlmsg_end(msg, hdr);
15265
15266 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15267 NL80211_MCGRP_MLME, GFP_KERNEL);
15268 return;
15269 out:
15270 nlmsg_free(msg);
15271 }
15272 EXPORT_SYMBOL(cfg80211_ft_event);
15273
15274 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15275 {
15276 struct cfg80211_registered_device *rdev;
15277 struct sk_buff *msg;
15278 void *hdr;
15279 u32 nlportid;
15280
15281 rdev = wiphy_to_rdev(wdev->wiphy);
15282 if (!rdev->crit_proto_nlportid)
15283 return;
15284
15285 nlportid = rdev->crit_proto_nlportid;
15286 rdev->crit_proto_nlportid = 0;
15287
15288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15289 if (!msg)
15290 return;
15291
15292 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15293 if (!hdr)
15294 goto nla_put_failure;
15295
15296 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15297 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15298 NL80211_ATTR_PAD))
15299 goto nla_put_failure;
15300
15301 genlmsg_end(msg, hdr);
15302
15303 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15304 return;
15305
15306 nla_put_failure:
15307 if (hdr)
15308 genlmsg_cancel(msg, hdr);
15309 nlmsg_free(msg);
15310 }
15311 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15312
15313 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15314 {
15315 struct wiphy *wiphy = wdev->wiphy;
15316 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15317 struct sk_buff *msg;
15318 void *hdr;
15319
15320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15321 if (!msg)
15322 return;
15323
15324 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15325 if (!hdr)
15326 goto out;
15327
15328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15329 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15330 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15331 NL80211_ATTR_PAD))
15332 goto out;
15333
15334 genlmsg_end(msg, hdr);
15335
15336 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15337 NL80211_MCGRP_MLME, GFP_KERNEL);
15338 return;
15339 out:
15340 nlmsg_free(msg);
15341 }
15342
15343 /* initialisation/exit functions */
15344
15345 int __init nl80211_init(void)
15346 {
15347 int err;
15348
15349 err = genl_register_family(&nl80211_fam);
15350 if (err)
15351 return err;
15352
15353 err = netlink_register_notifier(&nl80211_netlink_notifier);
15354 if (err)
15355 goto err_out;
15356
15357 return 0;
15358 err_out:
15359 genl_unregister_family(&nl80211_fam);
15360 return err;
15361 }
15362
15363 void nl80211_exit(void)
15364 {
15365 netlink_unregister_notifier(&nl80211_netlink_notifier);
15366 genl_unregister_family(&nl80211_fam);
15367 }
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