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Merge tag 'reset-fixes-for-4.14' of git://git.pengutronix.de/git/pza/linux into fixes
[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 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
553 struct netlink_callback *cb,
554 struct cfg80211_registered_device **rdev,
555 struct wireless_dev **wdev)
556 {
557 int err;
558
559 if (!cb->args[0]) {
560 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
561 genl_family_attrbuf(&nl80211_fam),
562 nl80211_fam.maxattr, nl80211_policy, NULL);
563 if (err)
564 return err;
565
566 *wdev = __cfg80211_wdev_from_attrs(
567 sock_net(skb->sk),
568 genl_family_attrbuf(&nl80211_fam));
569 if (IS_ERR(*wdev))
570 return PTR_ERR(*wdev);
571 *rdev = wiphy_to_rdev((*wdev)->wiphy);
572 /* 0 is the first index - add 1 to parse only once */
573 cb->args[0] = (*rdev)->wiphy_idx + 1;
574 cb->args[1] = (*wdev)->identifier;
575 } else {
576 /* subtract the 1 again here */
577 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
578 struct wireless_dev *tmp;
579
580 if (!wiphy)
581 return -ENODEV;
582 *rdev = wiphy_to_rdev(wiphy);
583 *wdev = NULL;
584
585 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
586 if (tmp->identifier == cb->args[1]) {
587 *wdev = tmp;
588 break;
589 }
590 }
591
592 if (!*wdev)
593 return -ENODEV;
594 }
595
596 return 0;
597 }
598
599 /* IE validation */
600 static bool is_valid_ie_attr(const struct nlattr *attr)
601 {
602 const u8 *pos;
603 int len;
604
605 if (!attr)
606 return true;
607
608 pos = nla_data(attr);
609 len = nla_len(attr);
610
611 while (len) {
612 u8 elemlen;
613
614 if (len < 2)
615 return false;
616 len -= 2;
617
618 elemlen = pos[1];
619 if (elemlen > len)
620 return false;
621
622 len -= elemlen;
623 pos += 2 + elemlen;
624 }
625
626 return true;
627 }
628
629 /* message building helper */
630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
631 int flags, u8 cmd)
632 {
633 /* since there is no private header just add the generic one */
634 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
635 }
636
637 static int nl80211_msg_put_channel(struct sk_buff *msg,
638 struct ieee80211_channel *chan,
639 bool large)
640 {
641 /* Some channels must be completely excluded from the
642 * list to protect old user-space tools from breaking
643 */
644 if (!large && chan->flags &
645 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
646 return 0;
647
648 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
649 chan->center_freq))
650 goto nla_put_failure;
651
652 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
653 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
654 goto nla_put_failure;
655 if (chan->flags & IEEE80211_CHAN_NO_IR) {
656 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
657 goto nla_put_failure;
658 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
659 goto nla_put_failure;
660 }
661 if (chan->flags & IEEE80211_CHAN_RADAR) {
662 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
663 goto nla_put_failure;
664 if (large) {
665 u32 time;
666
667 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
668
669 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
670 chan->dfs_state))
671 goto nla_put_failure;
672 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
673 time))
674 goto nla_put_failure;
675 if (nla_put_u32(msg,
676 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
677 chan->dfs_cac_ms))
678 goto nla_put_failure;
679 }
680 }
681
682 if (large) {
683 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
684 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
685 goto nla_put_failure;
686 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
687 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
688 goto nla_put_failure;
689 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
690 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
691 goto nla_put_failure;
692 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
694 goto nla_put_failure;
695 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
697 goto nla_put_failure;
698 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
700 goto nla_put_failure;
701 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
703 goto nla_put_failure;
704 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
706 goto nla_put_failure;
707 }
708
709 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
710 DBM_TO_MBM(chan->max_power)))
711 goto nla_put_failure;
712
713 return 0;
714
715 nla_put_failure:
716 return -ENOBUFS;
717 }
718
719 /* netlink command implementations */
720
721 struct key_parse {
722 struct key_params p;
723 int idx;
724 int type;
725 bool def, defmgmt;
726 bool def_uni, def_multi;
727 };
728
729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
730 {
731 struct nlattr *tb[NL80211_KEY_MAX + 1];
732 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
733 nl80211_key_policy, NULL);
734 if (err)
735 return err;
736
737 k->def = !!tb[NL80211_KEY_DEFAULT];
738 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
739
740 if (k->def) {
741 k->def_uni = true;
742 k->def_multi = true;
743 }
744 if (k->defmgmt)
745 k->def_multi = true;
746
747 if (tb[NL80211_KEY_IDX])
748 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
749
750 if (tb[NL80211_KEY_DATA]) {
751 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
752 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
753 }
754
755 if (tb[NL80211_KEY_SEQ]) {
756 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
757 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
758 }
759
760 if (tb[NL80211_KEY_CIPHER])
761 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
762
763 if (tb[NL80211_KEY_TYPE]) {
764 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
765 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
766 return -EINVAL;
767 }
768
769 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
770 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
771
772 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
773 tb[NL80211_KEY_DEFAULT_TYPES],
774 nl80211_key_default_policy, NULL);
775 if (err)
776 return err;
777
778 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
779 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
780 }
781
782 return 0;
783 }
784
785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
786 {
787 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
788 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
789 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
790 }
791
792 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
793 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
794 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
795 }
796
797 if (info->attrs[NL80211_ATTR_KEY_IDX])
798 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
799
800 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
801 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
802
803 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
804 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
805
806 if (k->def) {
807 k->def_uni = true;
808 k->def_multi = true;
809 }
810 if (k->defmgmt)
811 k->def_multi = true;
812
813 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
814 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
815 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
816 return -EINVAL;
817 }
818
819 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
820 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
821 int err = nla_parse_nested(kdt,
822 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
823 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
824 nl80211_key_default_policy,
825 info->extack);
826 if (err)
827 return err;
828
829 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
830 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
831 }
832
833 return 0;
834 }
835
836 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
837 {
838 int err;
839
840 memset(k, 0, sizeof(*k));
841 k->idx = -1;
842 k->type = -1;
843
844 if (info->attrs[NL80211_ATTR_KEY])
845 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
846 else
847 err = nl80211_parse_key_old(info, k);
848
849 if (err)
850 return err;
851
852 if (k->def && k->defmgmt)
853 return -EINVAL;
854
855 if (k->defmgmt) {
856 if (k->def_uni || !k->def_multi)
857 return -EINVAL;
858 }
859
860 if (k->idx != -1) {
861 if (k->defmgmt) {
862 if (k->idx < 4 || k->idx > 5)
863 return -EINVAL;
864 } else if (k->def) {
865 if (k->idx < 0 || k->idx > 3)
866 return -EINVAL;
867 } else {
868 if (k->idx < 0 || k->idx > 5)
869 return -EINVAL;
870 }
871 }
872
873 return 0;
874 }
875
876 static struct cfg80211_cached_keys *
877 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
878 struct nlattr *keys, bool *no_ht)
879 {
880 struct key_parse parse;
881 struct nlattr *key;
882 struct cfg80211_cached_keys *result;
883 int rem, err, def = 0;
884 bool have_key = false;
885
886 nla_for_each_nested(key, keys, rem) {
887 have_key = true;
888 break;
889 }
890
891 if (!have_key)
892 return NULL;
893
894 result = kzalloc(sizeof(*result), GFP_KERNEL);
895 if (!result)
896 return ERR_PTR(-ENOMEM);
897
898 result->def = -1;
899
900 nla_for_each_nested(key, keys, rem) {
901 memset(&parse, 0, sizeof(parse));
902 parse.idx = -1;
903
904 err = nl80211_parse_key_new(key, &parse);
905 if (err)
906 goto error;
907 err = -EINVAL;
908 if (!parse.p.key)
909 goto error;
910 if (parse.idx < 0 || parse.idx > 3)
911 goto error;
912 if (parse.def) {
913 if (def)
914 goto error;
915 def = 1;
916 result->def = parse.idx;
917 if (!parse.def_uni || !parse.def_multi)
918 goto error;
919 } else if (parse.defmgmt)
920 goto error;
921 err = cfg80211_validate_key_settings(rdev, &parse.p,
922 parse.idx, false, NULL);
923 if (err)
924 goto error;
925 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
926 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
927 err = -EINVAL;
928 goto error;
929 }
930 result->params[parse.idx].cipher = parse.p.cipher;
931 result->params[parse.idx].key_len = parse.p.key_len;
932 result->params[parse.idx].key = result->data[parse.idx];
933 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
934
935 /* must be WEP key if we got here */
936 if (no_ht)
937 *no_ht = true;
938 }
939
940 if (result->def < 0) {
941 err = -EINVAL;
942 goto error;
943 }
944
945 return result;
946 error:
947 kfree(result);
948 return ERR_PTR(err);
949 }
950
951 static int nl80211_key_allowed(struct wireless_dev *wdev)
952 {
953 ASSERT_WDEV_LOCK(wdev);
954
955 switch (wdev->iftype) {
956 case NL80211_IFTYPE_AP:
957 case NL80211_IFTYPE_AP_VLAN:
958 case NL80211_IFTYPE_P2P_GO:
959 case NL80211_IFTYPE_MESH_POINT:
960 break;
961 case NL80211_IFTYPE_ADHOC:
962 case NL80211_IFTYPE_STATION:
963 case NL80211_IFTYPE_P2P_CLIENT:
964 if (!wdev->current_bss)
965 return -ENOLINK;
966 break;
967 case NL80211_IFTYPE_UNSPECIFIED:
968 case NL80211_IFTYPE_OCB:
969 case NL80211_IFTYPE_MONITOR:
970 case NL80211_IFTYPE_NAN:
971 case NL80211_IFTYPE_P2P_DEVICE:
972 case NL80211_IFTYPE_WDS:
973 case NUM_NL80211_IFTYPES:
974 return -EINVAL;
975 }
976
977 return 0;
978 }
979
980 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
981 struct nlattr *tb)
982 {
983 struct ieee80211_channel *chan;
984
985 if (tb == NULL)
986 return NULL;
987 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
988 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
989 return NULL;
990 return chan;
991 }
992
993 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
994 {
995 struct nlattr *nl_modes = nla_nest_start(msg, attr);
996 int i;
997
998 if (!nl_modes)
999 goto nla_put_failure;
1000
1001 i = 0;
1002 while (ifmodes) {
1003 if ((ifmodes & 1) && nla_put_flag(msg, i))
1004 goto nla_put_failure;
1005 ifmodes >>= 1;
1006 i++;
1007 }
1008
1009 nla_nest_end(msg, nl_modes);
1010 return 0;
1011
1012 nla_put_failure:
1013 return -ENOBUFS;
1014 }
1015
1016 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1017 struct sk_buff *msg,
1018 bool large)
1019 {
1020 struct nlattr *nl_combis;
1021 int i, j;
1022
1023 nl_combis = nla_nest_start(msg,
1024 NL80211_ATTR_INTERFACE_COMBINATIONS);
1025 if (!nl_combis)
1026 goto nla_put_failure;
1027
1028 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1029 const struct ieee80211_iface_combination *c;
1030 struct nlattr *nl_combi, *nl_limits;
1031
1032 c = &wiphy->iface_combinations[i];
1033
1034 nl_combi = nla_nest_start(msg, i + 1);
1035 if (!nl_combi)
1036 goto nla_put_failure;
1037
1038 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1039 if (!nl_limits)
1040 goto nla_put_failure;
1041
1042 for (j = 0; j < c->n_limits; j++) {
1043 struct nlattr *nl_limit;
1044
1045 nl_limit = nla_nest_start(msg, j + 1);
1046 if (!nl_limit)
1047 goto nla_put_failure;
1048 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1049 c->limits[j].max))
1050 goto nla_put_failure;
1051 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1052 c->limits[j].types))
1053 goto nla_put_failure;
1054 nla_nest_end(msg, nl_limit);
1055 }
1056
1057 nla_nest_end(msg, nl_limits);
1058
1059 if (c->beacon_int_infra_match &&
1060 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1061 goto nla_put_failure;
1062 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1063 c->num_different_channels) ||
1064 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1065 c->max_interfaces))
1066 goto nla_put_failure;
1067 if (large &&
1068 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1069 c->radar_detect_widths) ||
1070 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1071 c->radar_detect_regions)))
1072 goto nla_put_failure;
1073 if (c->beacon_int_min_gcd &&
1074 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1075 c->beacon_int_min_gcd))
1076 goto nla_put_failure;
1077
1078 nla_nest_end(msg, nl_combi);
1079 }
1080
1081 nla_nest_end(msg, nl_combis);
1082
1083 return 0;
1084 nla_put_failure:
1085 return -ENOBUFS;
1086 }
1087
1088 #ifdef CONFIG_PM
1089 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1090 struct sk_buff *msg)
1091 {
1092 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1093 struct nlattr *nl_tcp;
1094
1095 if (!tcp)
1096 return 0;
1097
1098 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1099 if (!nl_tcp)
1100 return -ENOBUFS;
1101
1102 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1103 tcp->data_payload_max))
1104 return -ENOBUFS;
1105
1106 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1107 tcp->data_payload_max))
1108 return -ENOBUFS;
1109
1110 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1111 return -ENOBUFS;
1112
1113 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1114 sizeof(*tcp->tok), tcp->tok))
1115 return -ENOBUFS;
1116
1117 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1118 tcp->data_interval_max))
1119 return -ENOBUFS;
1120
1121 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1122 tcp->wake_payload_max))
1123 return -ENOBUFS;
1124
1125 nla_nest_end(msg, nl_tcp);
1126 return 0;
1127 }
1128
1129 static int nl80211_send_wowlan(struct sk_buff *msg,
1130 struct cfg80211_registered_device *rdev,
1131 bool large)
1132 {
1133 struct nlattr *nl_wowlan;
1134
1135 if (!rdev->wiphy.wowlan)
1136 return 0;
1137
1138 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1139 if (!nl_wowlan)
1140 return -ENOBUFS;
1141
1142 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1143 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1144 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1145 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1146 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1147 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1148 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1149 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1150 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1152 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1154 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1156 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1157 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1158 return -ENOBUFS;
1159
1160 if (rdev->wiphy.wowlan->n_patterns) {
1161 struct nl80211_pattern_support pat = {
1162 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1163 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1164 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1165 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1166 };
1167
1168 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1169 sizeof(pat), &pat))
1170 return -ENOBUFS;
1171 }
1172
1173 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1174 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1175 rdev->wiphy.wowlan->max_nd_match_sets))
1176 return -ENOBUFS;
1177
1178 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1179 return -ENOBUFS;
1180
1181 nla_nest_end(msg, nl_wowlan);
1182
1183 return 0;
1184 }
1185 #endif
1186
1187 static int nl80211_send_coalesce(struct sk_buff *msg,
1188 struct cfg80211_registered_device *rdev)
1189 {
1190 struct nl80211_coalesce_rule_support rule;
1191
1192 if (!rdev->wiphy.coalesce)
1193 return 0;
1194
1195 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1196 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1197 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1198 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1199 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1200 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1201
1202 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1203 return -ENOBUFS;
1204
1205 return 0;
1206 }
1207
1208 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1209 struct ieee80211_supported_band *sband)
1210 {
1211 struct nlattr *nl_rates, *nl_rate;
1212 struct ieee80211_rate *rate;
1213 int i;
1214
1215 /* add HT info */
1216 if (sband->ht_cap.ht_supported &&
1217 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1218 sizeof(sband->ht_cap.mcs),
1219 &sband->ht_cap.mcs) ||
1220 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1221 sband->ht_cap.cap) ||
1222 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1223 sband->ht_cap.ampdu_factor) ||
1224 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1225 sband->ht_cap.ampdu_density)))
1226 return -ENOBUFS;
1227
1228 /* add VHT info */
1229 if (sband->vht_cap.vht_supported &&
1230 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1231 sizeof(sband->vht_cap.vht_mcs),
1232 &sband->vht_cap.vht_mcs) ||
1233 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1234 sband->vht_cap.cap)))
1235 return -ENOBUFS;
1236
1237 /* add bitrates */
1238 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1239 if (!nl_rates)
1240 return -ENOBUFS;
1241
1242 for (i = 0; i < sband->n_bitrates; i++) {
1243 nl_rate = nla_nest_start(msg, i);
1244 if (!nl_rate)
1245 return -ENOBUFS;
1246
1247 rate = &sband->bitrates[i];
1248 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1249 rate->bitrate))
1250 return -ENOBUFS;
1251 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1252 nla_put_flag(msg,
1253 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1254 return -ENOBUFS;
1255
1256 nla_nest_end(msg, nl_rate);
1257 }
1258
1259 nla_nest_end(msg, nl_rates);
1260
1261 return 0;
1262 }
1263
1264 static int
1265 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1266 const struct ieee80211_txrx_stypes *mgmt_stypes)
1267 {
1268 u16 stypes;
1269 struct nlattr *nl_ftypes, *nl_ifs;
1270 enum nl80211_iftype ift;
1271 int i;
1272
1273 if (!mgmt_stypes)
1274 return 0;
1275
1276 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1277 if (!nl_ifs)
1278 return -ENOBUFS;
1279
1280 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1281 nl_ftypes = nla_nest_start(msg, ift);
1282 if (!nl_ftypes)
1283 return -ENOBUFS;
1284 i = 0;
1285 stypes = mgmt_stypes[ift].tx;
1286 while (stypes) {
1287 if ((stypes & 1) &&
1288 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1289 (i << 4) | IEEE80211_FTYPE_MGMT))
1290 return -ENOBUFS;
1291 stypes >>= 1;
1292 i++;
1293 }
1294 nla_nest_end(msg, nl_ftypes);
1295 }
1296
1297 nla_nest_end(msg, nl_ifs);
1298
1299 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1300 if (!nl_ifs)
1301 return -ENOBUFS;
1302
1303 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1304 nl_ftypes = nla_nest_start(msg, ift);
1305 if (!nl_ftypes)
1306 return -ENOBUFS;
1307 i = 0;
1308 stypes = mgmt_stypes[ift].rx;
1309 while (stypes) {
1310 if ((stypes & 1) &&
1311 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1312 (i << 4) | IEEE80211_FTYPE_MGMT))
1313 return -ENOBUFS;
1314 stypes >>= 1;
1315 i++;
1316 }
1317 nla_nest_end(msg, nl_ftypes);
1318 }
1319 nla_nest_end(msg, nl_ifs);
1320
1321 return 0;
1322 }
1323
1324 #define CMD(op, n) \
1325 do { \
1326 if (rdev->ops->op) { \
1327 i++; \
1328 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1329 goto nla_put_failure; \
1330 } \
1331 } while (0)
1332
1333 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1334 struct sk_buff *msg)
1335 {
1336 int i = 0;
1337
1338 /*
1339 * do *NOT* add anything into this function, new things need to be
1340 * advertised only to new versions of userspace that can deal with
1341 * the split (and they can't possibly care about new features...
1342 */
1343 CMD(add_virtual_intf, NEW_INTERFACE);
1344 CMD(change_virtual_intf, SET_INTERFACE);
1345 CMD(add_key, NEW_KEY);
1346 CMD(start_ap, START_AP);
1347 CMD(add_station, NEW_STATION);
1348 CMD(add_mpath, NEW_MPATH);
1349 CMD(update_mesh_config, SET_MESH_CONFIG);
1350 CMD(change_bss, SET_BSS);
1351 CMD(auth, AUTHENTICATE);
1352 CMD(assoc, ASSOCIATE);
1353 CMD(deauth, DEAUTHENTICATE);
1354 CMD(disassoc, DISASSOCIATE);
1355 CMD(join_ibss, JOIN_IBSS);
1356 CMD(join_mesh, JOIN_MESH);
1357 CMD(set_pmksa, SET_PMKSA);
1358 CMD(del_pmksa, DEL_PMKSA);
1359 CMD(flush_pmksa, FLUSH_PMKSA);
1360 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1361 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1362 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1363 CMD(mgmt_tx, FRAME);
1364 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1365 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1366 i++;
1367 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1368 goto nla_put_failure;
1369 }
1370 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1371 rdev->ops->join_mesh) {
1372 i++;
1373 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1374 goto nla_put_failure;
1375 }
1376 CMD(set_wds_peer, SET_WDS_PEER);
1377 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1378 CMD(tdls_mgmt, TDLS_MGMT);
1379 CMD(tdls_oper, TDLS_OPER);
1380 }
1381 if (rdev->wiphy.max_sched_scan_reqs)
1382 CMD(sched_scan_start, START_SCHED_SCAN);
1383 CMD(probe_client, PROBE_CLIENT);
1384 CMD(set_noack_map, SET_NOACK_MAP);
1385 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1386 i++;
1387 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1388 goto nla_put_failure;
1389 }
1390 CMD(start_p2p_device, START_P2P_DEVICE);
1391 CMD(set_mcast_rate, SET_MCAST_RATE);
1392 #ifdef CONFIG_NL80211_TESTMODE
1393 CMD(testmode_cmd, TESTMODE);
1394 #endif
1395
1396 if (rdev->ops->connect || rdev->ops->auth) {
1397 i++;
1398 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1399 goto nla_put_failure;
1400 }
1401
1402 if (rdev->ops->disconnect || rdev->ops->deauth) {
1403 i++;
1404 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1405 goto nla_put_failure;
1406 }
1407
1408 return i;
1409 nla_put_failure:
1410 return -ENOBUFS;
1411 }
1412
1413 struct nl80211_dump_wiphy_state {
1414 s64 filter_wiphy;
1415 long start;
1416 long split_start, band_start, chan_start, capa_start;
1417 bool split;
1418 };
1419
1420 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1421 enum nl80211_commands cmd,
1422 struct sk_buff *msg, u32 portid, u32 seq,
1423 int flags, struct nl80211_dump_wiphy_state *state)
1424 {
1425 void *hdr;
1426 struct nlattr *nl_bands, *nl_band;
1427 struct nlattr *nl_freqs, *nl_freq;
1428 struct nlattr *nl_cmds;
1429 enum nl80211_band band;
1430 struct ieee80211_channel *chan;
1431 int i;
1432 const struct ieee80211_txrx_stypes *mgmt_stypes =
1433 rdev->wiphy.mgmt_stypes;
1434 u32 features;
1435
1436 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1437 if (!hdr)
1438 return -ENOBUFS;
1439
1440 if (WARN_ON(!state))
1441 return -EINVAL;
1442
1443 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1444 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1445 wiphy_name(&rdev->wiphy)) ||
1446 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1447 cfg80211_rdev_list_generation))
1448 goto nla_put_failure;
1449
1450 if (cmd != NL80211_CMD_NEW_WIPHY)
1451 goto finish;
1452
1453 switch (state->split_start) {
1454 case 0:
1455 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1456 rdev->wiphy.retry_short) ||
1457 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1458 rdev->wiphy.retry_long) ||
1459 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1460 rdev->wiphy.frag_threshold) ||
1461 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1462 rdev->wiphy.rts_threshold) ||
1463 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1464 rdev->wiphy.coverage_class) ||
1465 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1466 rdev->wiphy.max_scan_ssids) ||
1467 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1468 rdev->wiphy.max_sched_scan_ssids) ||
1469 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1470 rdev->wiphy.max_scan_ie_len) ||
1471 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1472 rdev->wiphy.max_sched_scan_ie_len) ||
1473 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1474 rdev->wiphy.max_match_sets) ||
1475 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1476 rdev->wiphy.max_sched_scan_plans) ||
1477 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1478 rdev->wiphy.max_sched_scan_plan_interval) ||
1479 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1480 rdev->wiphy.max_sched_scan_plan_iterations))
1481 goto nla_put_failure;
1482
1483 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1484 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1485 goto nla_put_failure;
1486 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1487 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1488 goto nla_put_failure;
1489 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1490 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1491 goto nla_put_failure;
1492 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1493 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1494 goto nla_put_failure;
1495 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1496 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1497 goto nla_put_failure;
1498 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1499 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1500 goto nla_put_failure;
1501 state->split_start++;
1502 if (state->split)
1503 break;
1504 case 1:
1505 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1506 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1507 rdev->wiphy.cipher_suites))
1508 goto nla_put_failure;
1509
1510 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1511 rdev->wiphy.max_num_pmkids))
1512 goto nla_put_failure;
1513
1514 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1515 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1516 goto nla_put_failure;
1517
1518 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1519 rdev->wiphy.available_antennas_tx) ||
1520 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1521 rdev->wiphy.available_antennas_rx))
1522 goto nla_put_failure;
1523
1524 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1525 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1526 rdev->wiphy.probe_resp_offload))
1527 goto nla_put_failure;
1528
1529 if ((rdev->wiphy.available_antennas_tx ||
1530 rdev->wiphy.available_antennas_rx) &&
1531 rdev->ops->get_antenna) {
1532 u32 tx_ant = 0, rx_ant = 0;
1533 int res;
1534
1535 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1536 if (!res) {
1537 if (nla_put_u32(msg,
1538 NL80211_ATTR_WIPHY_ANTENNA_TX,
1539 tx_ant) ||
1540 nla_put_u32(msg,
1541 NL80211_ATTR_WIPHY_ANTENNA_RX,
1542 rx_ant))
1543 goto nla_put_failure;
1544 }
1545 }
1546
1547 state->split_start++;
1548 if (state->split)
1549 break;
1550 case 2:
1551 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1552 rdev->wiphy.interface_modes))
1553 goto nla_put_failure;
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 3:
1558 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1559 if (!nl_bands)
1560 goto nla_put_failure;
1561
1562 for (band = state->band_start;
1563 band < NUM_NL80211_BANDS; band++) {
1564 struct ieee80211_supported_band *sband;
1565
1566 sband = rdev->wiphy.bands[band];
1567
1568 if (!sband)
1569 continue;
1570
1571 nl_band = nla_nest_start(msg, band);
1572 if (!nl_band)
1573 goto nla_put_failure;
1574
1575 switch (state->chan_start) {
1576 case 0:
1577 if (nl80211_send_band_rateinfo(msg, sband))
1578 goto nla_put_failure;
1579 state->chan_start++;
1580 if (state->split)
1581 break;
1582 default:
1583 /* add frequencies */
1584 nl_freqs = nla_nest_start(
1585 msg, NL80211_BAND_ATTR_FREQS);
1586 if (!nl_freqs)
1587 goto nla_put_failure;
1588
1589 for (i = state->chan_start - 1;
1590 i < sband->n_channels;
1591 i++) {
1592 nl_freq = nla_nest_start(msg, i);
1593 if (!nl_freq)
1594 goto nla_put_failure;
1595
1596 chan = &sband->channels[i];
1597
1598 if (nl80211_msg_put_channel(
1599 msg, chan,
1600 state->split))
1601 goto nla_put_failure;
1602
1603 nla_nest_end(msg, nl_freq);
1604 if (state->split)
1605 break;
1606 }
1607 if (i < sband->n_channels)
1608 state->chan_start = i + 2;
1609 else
1610 state->chan_start = 0;
1611 nla_nest_end(msg, nl_freqs);
1612 }
1613
1614 nla_nest_end(msg, nl_band);
1615
1616 if (state->split) {
1617 /* start again here */
1618 if (state->chan_start)
1619 band--;
1620 break;
1621 }
1622 }
1623 nla_nest_end(msg, nl_bands);
1624
1625 if (band < NUM_NL80211_BANDS)
1626 state->band_start = band + 1;
1627 else
1628 state->band_start = 0;
1629
1630 /* if bands & channels are done, continue outside */
1631 if (state->band_start == 0 && state->chan_start == 0)
1632 state->split_start++;
1633 if (state->split)
1634 break;
1635 case 4:
1636 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1637 if (!nl_cmds)
1638 goto nla_put_failure;
1639
1640 i = nl80211_add_commands_unsplit(rdev, msg);
1641 if (i < 0)
1642 goto nla_put_failure;
1643 if (state->split) {
1644 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1645 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1646 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1647 CMD(channel_switch, CHANNEL_SWITCH);
1648 CMD(set_qos_map, SET_QOS_MAP);
1649 if (rdev->wiphy.features &
1650 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1651 CMD(add_tx_ts, ADD_TX_TS);
1652 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1653 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1654 }
1655 #undef CMD
1656
1657 nla_nest_end(msg, nl_cmds);
1658 state->split_start++;
1659 if (state->split)
1660 break;
1661 case 5:
1662 if (rdev->ops->remain_on_channel &&
1663 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1664 nla_put_u32(msg,
1665 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1666 rdev->wiphy.max_remain_on_channel_duration))
1667 goto nla_put_failure;
1668
1669 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1670 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1671 goto nla_put_failure;
1672
1673 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1674 goto nla_put_failure;
1675 state->split_start++;
1676 if (state->split)
1677 break;
1678 case 6:
1679 #ifdef CONFIG_PM
1680 if (nl80211_send_wowlan(msg, rdev, state->split))
1681 goto nla_put_failure;
1682 state->split_start++;
1683 if (state->split)
1684 break;
1685 #else
1686 state->split_start++;
1687 #endif
1688 case 7:
1689 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1690 rdev->wiphy.software_iftypes))
1691 goto nla_put_failure;
1692
1693 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1694 state->split))
1695 goto nla_put_failure;
1696
1697 state->split_start++;
1698 if (state->split)
1699 break;
1700 case 8:
1701 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1702 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1703 rdev->wiphy.ap_sme_capa))
1704 goto nla_put_failure;
1705
1706 features = rdev->wiphy.features;
1707 /*
1708 * We can only add the per-channel limit information if the
1709 * dump is split, otherwise it makes it too big. Therefore
1710 * only advertise it in that case.
1711 */
1712 if (state->split)
1713 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1714 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1715 goto nla_put_failure;
1716
1717 if (rdev->wiphy.ht_capa_mod_mask &&
1718 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1719 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1720 rdev->wiphy.ht_capa_mod_mask))
1721 goto nla_put_failure;
1722
1723 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1724 rdev->wiphy.max_acl_mac_addrs &&
1725 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1726 rdev->wiphy.max_acl_mac_addrs))
1727 goto nla_put_failure;
1728
1729 /*
1730 * Any information below this point is only available to
1731 * applications that can deal with it being split. This
1732 * helps ensure that newly added capabilities don't break
1733 * older tools by overrunning their buffers.
1734 *
1735 * We still increment split_start so that in the split
1736 * case we'll continue with more data in the next round,
1737 * but break unconditionally so unsplit data stops here.
1738 */
1739 state->split_start++;
1740 break;
1741 case 9:
1742 if (rdev->wiphy.extended_capabilities &&
1743 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1744 rdev->wiphy.extended_capabilities_len,
1745 rdev->wiphy.extended_capabilities) ||
1746 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1747 rdev->wiphy.extended_capabilities_len,
1748 rdev->wiphy.extended_capabilities_mask)))
1749 goto nla_put_failure;
1750
1751 if (rdev->wiphy.vht_capa_mod_mask &&
1752 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1753 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1754 rdev->wiphy.vht_capa_mod_mask))
1755 goto nla_put_failure;
1756
1757 state->split_start++;
1758 break;
1759 case 10:
1760 if (nl80211_send_coalesce(msg, rdev))
1761 goto nla_put_failure;
1762
1763 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1764 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1765 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1766 goto nla_put_failure;
1767
1768 if (rdev->wiphy.max_ap_assoc_sta &&
1769 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1770 rdev->wiphy.max_ap_assoc_sta))
1771 goto nla_put_failure;
1772
1773 state->split_start++;
1774 break;
1775 case 11:
1776 if (rdev->wiphy.n_vendor_commands) {
1777 const struct nl80211_vendor_cmd_info *info;
1778 struct nlattr *nested;
1779
1780 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1781 if (!nested)
1782 goto nla_put_failure;
1783
1784 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1785 info = &rdev->wiphy.vendor_commands[i].info;
1786 if (nla_put(msg, i + 1, sizeof(*info), info))
1787 goto nla_put_failure;
1788 }
1789 nla_nest_end(msg, nested);
1790 }
1791
1792 if (rdev->wiphy.n_vendor_events) {
1793 const struct nl80211_vendor_cmd_info *info;
1794 struct nlattr *nested;
1795
1796 nested = nla_nest_start(msg,
1797 NL80211_ATTR_VENDOR_EVENTS);
1798 if (!nested)
1799 goto nla_put_failure;
1800
1801 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1802 info = &rdev->wiphy.vendor_events[i];
1803 if (nla_put(msg, i + 1, sizeof(*info), info))
1804 goto nla_put_failure;
1805 }
1806 nla_nest_end(msg, nested);
1807 }
1808 state->split_start++;
1809 break;
1810 case 12:
1811 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1812 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1813 rdev->wiphy.max_num_csa_counters))
1814 goto nla_put_failure;
1815
1816 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1817 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1818 goto nla_put_failure;
1819
1820 if (rdev->wiphy.max_sched_scan_reqs &&
1821 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1822 rdev->wiphy.max_sched_scan_reqs))
1823 goto nla_put_failure;
1824
1825 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1826 sizeof(rdev->wiphy.ext_features),
1827 rdev->wiphy.ext_features))
1828 goto nla_put_failure;
1829
1830 if (rdev->wiphy.bss_select_support) {
1831 struct nlattr *nested;
1832 u32 bss_select_support = rdev->wiphy.bss_select_support;
1833
1834 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1835 if (!nested)
1836 goto nla_put_failure;
1837
1838 i = 0;
1839 while (bss_select_support) {
1840 if ((bss_select_support & 1) &&
1841 nla_put_flag(msg, i))
1842 goto nla_put_failure;
1843 i++;
1844 bss_select_support >>= 1;
1845 }
1846 nla_nest_end(msg, nested);
1847 }
1848
1849 state->split_start++;
1850 break;
1851 case 13:
1852 if (rdev->wiphy.num_iftype_ext_capab &&
1853 rdev->wiphy.iftype_ext_capab) {
1854 struct nlattr *nested_ext_capab, *nested;
1855
1856 nested = nla_nest_start(msg,
1857 NL80211_ATTR_IFTYPE_EXT_CAPA);
1858 if (!nested)
1859 goto nla_put_failure;
1860
1861 for (i = state->capa_start;
1862 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1863 const struct wiphy_iftype_ext_capab *capab;
1864
1865 capab = &rdev->wiphy.iftype_ext_capab[i];
1866
1867 nested_ext_capab = nla_nest_start(msg, i);
1868 if (!nested_ext_capab ||
1869 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1870 capab->iftype) ||
1871 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1872 capab->extended_capabilities_len,
1873 capab->extended_capabilities) ||
1874 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1875 capab->extended_capabilities_len,
1876 capab->extended_capabilities_mask))
1877 goto nla_put_failure;
1878
1879 nla_nest_end(msg, nested_ext_capab);
1880 if (state->split)
1881 break;
1882 }
1883 nla_nest_end(msg, nested);
1884 if (i < rdev->wiphy.num_iftype_ext_capab) {
1885 state->capa_start = i + 1;
1886 break;
1887 }
1888 }
1889
1890 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1891 rdev->wiphy.nan_supported_bands))
1892 goto nla_put_failure;
1893
1894 /* done */
1895 state->split_start = 0;
1896 break;
1897 }
1898 finish:
1899 genlmsg_end(msg, hdr);
1900 return 0;
1901
1902 nla_put_failure:
1903 genlmsg_cancel(msg, hdr);
1904 return -EMSGSIZE;
1905 }
1906
1907 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1908 struct netlink_callback *cb,
1909 struct nl80211_dump_wiphy_state *state)
1910 {
1911 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1912 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1913 nl80211_fam.maxattr, nl80211_policy, NULL);
1914 /* ignore parse errors for backward compatibility */
1915 if (ret)
1916 return 0;
1917
1918 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1919 if (tb[NL80211_ATTR_WIPHY])
1920 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1921 if (tb[NL80211_ATTR_WDEV])
1922 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1923 if (tb[NL80211_ATTR_IFINDEX]) {
1924 struct net_device *netdev;
1925 struct cfg80211_registered_device *rdev;
1926 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1927
1928 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1929 if (!netdev)
1930 return -ENODEV;
1931 if (netdev->ieee80211_ptr) {
1932 rdev = wiphy_to_rdev(
1933 netdev->ieee80211_ptr->wiphy);
1934 state->filter_wiphy = rdev->wiphy_idx;
1935 }
1936 }
1937
1938 return 0;
1939 }
1940
1941 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1942 {
1943 int idx = 0, ret;
1944 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1945 struct cfg80211_registered_device *rdev;
1946
1947 rtnl_lock();
1948 if (!state) {
1949 state = kzalloc(sizeof(*state), GFP_KERNEL);
1950 if (!state) {
1951 rtnl_unlock();
1952 return -ENOMEM;
1953 }
1954 state->filter_wiphy = -1;
1955 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1956 if (ret) {
1957 kfree(state);
1958 rtnl_unlock();
1959 return ret;
1960 }
1961 cb->args[0] = (long)state;
1962 }
1963
1964 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1965 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1966 continue;
1967 if (++idx <= state->start)
1968 continue;
1969 if (state->filter_wiphy != -1 &&
1970 state->filter_wiphy != rdev->wiphy_idx)
1971 continue;
1972 /* attempt to fit multiple wiphy data chunks into the skb */
1973 do {
1974 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1975 skb,
1976 NETLINK_CB(cb->skb).portid,
1977 cb->nlh->nlmsg_seq,
1978 NLM_F_MULTI, state);
1979 if (ret < 0) {
1980 /*
1981 * If sending the wiphy data didn't fit (ENOBUFS
1982 * or EMSGSIZE returned), this SKB is still
1983 * empty (so it's not too big because another
1984 * wiphy dataset is already in the skb) and
1985 * we've not tried to adjust the dump allocation
1986 * yet ... then adjust the alloc size to be
1987 * bigger, and return 1 but with the empty skb.
1988 * This results in an empty message being RX'ed
1989 * in userspace, but that is ignored.
1990 *
1991 * We can then retry with the larger buffer.
1992 */
1993 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1994 !skb->len && !state->split &&
1995 cb->min_dump_alloc < 4096) {
1996 cb->min_dump_alloc = 4096;
1997 state->split_start = 0;
1998 rtnl_unlock();
1999 return 1;
2000 }
2001 idx--;
2002 break;
2003 }
2004 } while (state->split_start > 0);
2005 break;
2006 }
2007 rtnl_unlock();
2008
2009 state->start = idx;
2010
2011 return skb->len;
2012 }
2013
2014 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2015 {
2016 kfree((void *)cb->args[0]);
2017 return 0;
2018 }
2019
2020 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2021 {
2022 struct sk_buff *msg;
2023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2024 struct nl80211_dump_wiphy_state state = {};
2025
2026 msg = nlmsg_new(4096, GFP_KERNEL);
2027 if (!msg)
2028 return -ENOMEM;
2029
2030 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2031 info->snd_portid, info->snd_seq, 0,
2032 &state) < 0) {
2033 nlmsg_free(msg);
2034 return -ENOBUFS;
2035 }
2036
2037 return genlmsg_reply(msg, info);
2038 }
2039
2040 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2041 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2042 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2043 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2044 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2045 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2046 };
2047
2048 static int parse_txq_params(struct nlattr *tb[],
2049 struct ieee80211_txq_params *txq_params)
2050 {
2051 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2052 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2053 !tb[NL80211_TXQ_ATTR_AIFS])
2054 return -EINVAL;
2055
2056 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2057 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2058 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2059 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2060 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2061
2062 if (txq_params->ac >= NL80211_NUM_ACS)
2063 return -EINVAL;
2064
2065 return 0;
2066 }
2067
2068 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2069 {
2070 /*
2071 * You can only set the channel explicitly for WDS interfaces,
2072 * all others have their channel managed via their respective
2073 * "establish a connection" command (connect, join, ...)
2074 *
2075 * For AP/GO and mesh mode, the channel can be set with the
2076 * channel userspace API, but is only stored and passed to the
2077 * low-level driver when the AP starts or the mesh is joined.
2078 * This is for backward compatibility, userspace can also give
2079 * the channel in the start-ap or join-mesh commands instead.
2080 *
2081 * Monitors are special as they are normally slaved to
2082 * whatever else is going on, so they have their own special
2083 * operation to set the monitor channel if possible.
2084 */
2085 return !wdev ||
2086 wdev->iftype == NL80211_IFTYPE_AP ||
2087 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2088 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2089 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2090 }
2091
2092 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2093 struct genl_info *info,
2094 struct cfg80211_chan_def *chandef)
2095 {
2096 u32 control_freq;
2097
2098 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2099 return -EINVAL;
2100
2101 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2102
2103 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2104 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2105 chandef->center_freq1 = control_freq;
2106 chandef->center_freq2 = 0;
2107
2108 /* Primary channel not allowed */
2109 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2110 return -EINVAL;
2111
2112 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2113 enum nl80211_channel_type chantype;
2114
2115 chantype = nla_get_u32(
2116 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2117
2118 switch (chantype) {
2119 case NL80211_CHAN_NO_HT:
2120 case NL80211_CHAN_HT20:
2121 case NL80211_CHAN_HT40PLUS:
2122 case NL80211_CHAN_HT40MINUS:
2123 cfg80211_chandef_create(chandef, chandef->chan,
2124 chantype);
2125 break;
2126 default:
2127 return -EINVAL;
2128 }
2129 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2130 chandef->width =
2131 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2132 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2133 chandef->center_freq1 =
2134 nla_get_u32(
2135 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2136 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2137 chandef->center_freq2 =
2138 nla_get_u32(
2139 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2140 }
2141
2142 if (!cfg80211_chandef_valid(chandef))
2143 return -EINVAL;
2144
2145 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2146 IEEE80211_CHAN_DISABLED))
2147 return -EINVAL;
2148
2149 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2150 chandef->width == NL80211_CHAN_WIDTH_10) &&
2151 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2152 return -EINVAL;
2153
2154 return 0;
2155 }
2156
2157 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2158 struct net_device *dev,
2159 struct genl_info *info)
2160 {
2161 struct cfg80211_chan_def chandef;
2162 int result;
2163 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2164 struct wireless_dev *wdev = NULL;
2165
2166 if (dev)
2167 wdev = dev->ieee80211_ptr;
2168 if (!nl80211_can_set_dev_channel(wdev))
2169 return -EOPNOTSUPP;
2170 if (wdev)
2171 iftype = wdev->iftype;
2172
2173 result = nl80211_parse_chandef(rdev, info, &chandef);
2174 if (result)
2175 return result;
2176
2177 switch (iftype) {
2178 case NL80211_IFTYPE_AP:
2179 case NL80211_IFTYPE_P2P_GO:
2180 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2181 iftype)) {
2182 result = -EINVAL;
2183 break;
2184 }
2185 if (wdev->beacon_interval) {
2186 if (!dev || !rdev->ops->set_ap_chanwidth ||
2187 !(rdev->wiphy.features &
2188 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2189 result = -EBUSY;
2190 break;
2191 }
2192
2193 /* Only allow dynamic channel width changes */
2194 if (chandef.chan != wdev->preset_chandef.chan) {
2195 result = -EBUSY;
2196 break;
2197 }
2198 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2199 if (result)
2200 break;
2201 }
2202 wdev->preset_chandef = chandef;
2203 result = 0;
2204 break;
2205 case NL80211_IFTYPE_MESH_POINT:
2206 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2207 break;
2208 case NL80211_IFTYPE_MONITOR:
2209 result = cfg80211_set_monitor_channel(rdev, &chandef);
2210 break;
2211 default:
2212 result = -EINVAL;
2213 }
2214
2215 return result;
2216 }
2217
2218 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2219 {
2220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2221 struct net_device *netdev = info->user_ptr[1];
2222
2223 return __nl80211_set_channel(rdev, netdev, info);
2224 }
2225
2226 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2227 {
2228 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2229 struct net_device *dev = info->user_ptr[1];
2230 struct wireless_dev *wdev = dev->ieee80211_ptr;
2231 const u8 *bssid;
2232
2233 if (!info->attrs[NL80211_ATTR_MAC])
2234 return -EINVAL;
2235
2236 if (netif_running(dev))
2237 return -EBUSY;
2238
2239 if (!rdev->ops->set_wds_peer)
2240 return -EOPNOTSUPP;
2241
2242 if (wdev->iftype != NL80211_IFTYPE_WDS)
2243 return -EOPNOTSUPP;
2244
2245 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2246 return rdev_set_wds_peer(rdev, dev, bssid);
2247 }
2248
2249 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2250 {
2251 struct cfg80211_registered_device *rdev;
2252 struct net_device *netdev = NULL;
2253 struct wireless_dev *wdev;
2254 int result = 0, rem_txq_params = 0;
2255 struct nlattr *nl_txq_params;
2256 u32 changed;
2257 u8 retry_short = 0, retry_long = 0;
2258 u32 frag_threshold = 0, rts_threshold = 0;
2259 u8 coverage_class = 0;
2260
2261 ASSERT_RTNL();
2262
2263 /*
2264 * Try to find the wiphy and netdev. Normally this
2265 * function shouldn't need the netdev, but this is
2266 * done for backward compatibility -- previously
2267 * setting the channel was done per wiphy, but now
2268 * it is per netdev. Previous userland like hostapd
2269 * also passed a netdev to set_wiphy, so that it is
2270 * possible to let that go to the right netdev!
2271 */
2272
2273 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2274 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2275
2276 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2277 if (netdev && netdev->ieee80211_ptr)
2278 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2279 else
2280 netdev = NULL;
2281 }
2282
2283 if (!netdev) {
2284 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2285 info->attrs);
2286 if (IS_ERR(rdev))
2287 return PTR_ERR(rdev);
2288 wdev = NULL;
2289 netdev = NULL;
2290 result = 0;
2291 } else
2292 wdev = netdev->ieee80211_ptr;
2293
2294 /*
2295 * end workaround code, by now the rdev is available
2296 * and locked, and wdev may or may not be NULL.
2297 */
2298
2299 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2300 result = cfg80211_dev_rename(
2301 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2302
2303 if (result)
2304 return result;
2305
2306 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2307 struct ieee80211_txq_params txq_params;
2308 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2309
2310 if (!rdev->ops->set_txq_params)
2311 return -EOPNOTSUPP;
2312
2313 if (!netdev)
2314 return -EINVAL;
2315
2316 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2317 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2318 return -EINVAL;
2319
2320 if (!netif_running(netdev))
2321 return -ENETDOWN;
2322
2323 nla_for_each_nested(nl_txq_params,
2324 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2325 rem_txq_params) {
2326 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2327 nl_txq_params,
2328 txq_params_policy,
2329 info->extack);
2330 if (result)
2331 return result;
2332 result = parse_txq_params(tb, &txq_params);
2333 if (result)
2334 return result;
2335
2336 result = rdev_set_txq_params(rdev, netdev,
2337 &txq_params);
2338 if (result)
2339 return result;
2340 }
2341 }
2342
2343 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2344 result = __nl80211_set_channel(
2345 rdev,
2346 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2347 info);
2348 if (result)
2349 return result;
2350 }
2351
2352 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2353 struct wireless_dev *txp_wdev = wdev;
2354 enum nl80211_tx_power_setting type;
2355 int idx, mbm = 0;
2356
2357 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2358 txp_wdev = NULL;
2359
2360 if (!rdev->ops->set_tx_power)
2361 return -EOPNOTSUPP;
2362
2363 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2364 type = nla_get_u32(info->attrs[idx]);
2365
2366 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2367 (type != NL80211_TX_POWER_AUTOMATIC))
2368 return -EINVAL;
2369
2370 if (type != NL80211_TX_POWER_AUTOMATIC) {
2371 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2372 mbm = nla_get_u32(info->attrs[idx]);
2373 }
2374
2375 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2376 if (result)
2377 return result;
2378 }
2379
2380 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2381 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2382 u32 tx_ant, rx_ant;
2383
2384 if ((!rdev->wiphy.available_antennas_tx &&
2385 !rdev->wiphy.available_antennas_rx) ||
2386 !rdev->ops->set_antenna)
2387 return -EOPNOTSUPP;
2388
2389 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2390 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2391
2392 /* reject antenna configurations which don't match the
2393 * available antenna masks, except for the "all" mask */
2394 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2395 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2396 return -EINVAL;
2397
2398 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2399 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2400
2401 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2402 if (result)
2403 return result;
2404 }
2405
2406 changed = 0;
2407
2408 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2409 retry_short = nla_get_u8(
2410 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2411 if (retry_short == 0)
2412 return -EINVAL;
2413
2414 changed |= WIPHY_PARAM_RETRY_SHORT;
2415 }
2416
2417 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2418 retry_long = nla_get_u8(
2419 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2420 if (retry_long == 0)
2421 return -EINVAL;
2422
2423 changed |= WIPHY_PARAM_RETRY_LONG;
2424 }
2425
2426 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2427 frag_threshold = nla_get_u32(
2428 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2429 if (frag_threshold < 256)
2430 return -EINVAL;
2431
2432 if (frag_threshold != (u32) -1) {
2433 /*
2434 * Fragments (apart from the last one) are required to
2435 * have even length. Make the fragmentation code
2436 * simpler by stripping LSB should someone try to use
2437 * odd threshold value.
2438 */
2439 frag_threshold &= ~0x1;
2440 }
2441 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2442 }
2443
2444 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2445 rts_threshold = nla_get_u32(
2446 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2447 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2448 }
2449
2450 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2451 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2452 return -EINVAL;
2453
2454 coverage_class = nla_get_u8(
2455 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2456 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2457 }
2458
2459 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2460 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2461 return -EOPNOTSUPP;
2462
2463 changed |= WIPHY_PARAM_DYN_ACK;
2464 }
2465
2466 if (changed) {
2467 u8 old_retry_short, old_retry_long;
2468 u32 old_frag_threshold, old_rts_threshold;
2469 u8 old_coverage_class;
2470
2471 if (!rdev->ops->set_wiphy_params)
2472 return -EOPNOTSUPP;
2473
2474 old_retry_short = rdev->wiphy.retry_short;
2475 old_retry_long = rdev->wiphy.retry_long;
2476 old_frag_threshold = rdev->wiphy.frag_threshold;
2477 old_rts_threshold = rdev->wiphy.rts_threshold;
2478 old_coverage_class = rdev->wiphy.coverage_class;
2479
2480 if (changed & WIPHY_PARAM_RETRY_SHORT)
2481 rdev->wiphy.retry_short = retry_short;
2482 if (changed & WIPHY_PARAM_RETRY_LONG)
2483 rdev->wiphy.retry_long = retry_long;
2484 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2485 rdev->wiphy.frag_threshold = frag_threshold;
2486 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2487 rdev->wiphy.rts_threshold = rts_threshold;
2488 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2489 rdev->wiphy.coverage_class = coverage_class;
2490
2491 result = rdev_set_wiphy_params(rdev, changed);
2492 if (result) {
2493 rdev->wiphy.retry_short = old_retry_short;
2494 rdev->wiphy.retry_long = old_retry_long;
2495 rdev->wiphy.frag_threshold = old_frag_threshold;
2496 rdev->wiphy.rts_threshold = old_rts_threshold;
2497 rdev->wiphy.coverage_class = old_coverage_class;
2498 return result;
2499 }
2500 }
2501 return 0;
2502 }
2503
2504 static inline u64 wdev_id(struct wireless_dev *wdev)
2505 {
2506 return (u64)wdev->identifier |
2507 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2508 }
2509
2510 static int nl80211_send_chandef(struct sk_buff *msg,
2511 const struct cfg80211_chan_def *chandef)
2512 {
2513 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2514 return -EINVAL;
2515
2516 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2517 chandef->chan->center_freq))
2518 return -ENOBUFS;
2519 switch (chandef->width) {
2520 case NL80211_CHAN_WIDTH_20_NOHT:
2521 case NL80211_CHAN_WIDTH_20:
2522 case NL80211_CHAN_WIDTH_40:
2523 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2524 cfg80211_get_chandef_type(chandef)))
2525 return -ENOBUFS;
2526 break;
2527 default:
2528 break;
2529 }
2530 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2531 return -ENOBUFS;
2532 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2533 return -ENOBUFS;
2534 if (chandef->center_freq2 &&
2535 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2536 return -ENOBUFS;
2537 return 0;
2538 }
2539
2540 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2541 struct cfg80211_registered_device *rdev,
2542 struct wireless_dev *wdev, bool removal)
2543 {
2544 struct net_device *dev = wdev->netdev;
2545 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2546 void *hdr;
2547
2548 if (removal)
2549 cmd = NL80211_CMD_DEL_INTERFACE;
2550
2551 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2552 if (!hdr)
2553 return -1;
2554
2555 if (dev &&
2556 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2557 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2558 goto nla_put_failure;
2559
2560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2561 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2562 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2563 NL80211_ATTR_PAD) ||
2564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2565 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2566 rdev->devlist_generation ^
2567 (cfg80211_rdev_list_generation << 2)))
2568 goto nla_put_failure;
2569
2570 if (rdev->ops->get_channel) {
2571 int ret;
2572 struct cfg80211_chan_def chandef;
2573
2574 ret = rdev_get_channel(rdev, wdev, &chandef);
2575 if (ret == 0) {
2576 if (nl80211_send_chandef(msg, &chandef))
2577 goto nla_put_failure;
2578 }
2579 }
2580
2581 if (rdev->ops->get_tx_power) {
2582 int dbm, ret;
2583
2584 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2585 if (ret == 0 &&
2586 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2587 DBM_TO_MBM(dbm)))
2588 goto nla_put_failure;
2589 }
2590
2591 if (wdev->ssid_len) {
2592 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2593 goto nla_put_failure;
2594 }
2595
2596 genlmsg_end(msg, hdr);
2597 return 0;
2598
2599 nla_put_failure:
2600 genlmsg_cancel(msg, hdr);
2601 return -EMSGSIZE;
2602 }
2603
2604 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2605 {
2606 int wp_idx = 0;
2607 int if_idx = 0;
2608 int wp_start = cb->args[0];
2609 int if_start = cb->args[1];
2610 int filter_wiphy = -1;
2611 struct cfg80211_registered_device *rdev;
2612 struct wireless_dev *wdev;
2613 int ret;
2614
2615 rtnl_lock();
2616 if (!cb->args[2]) {
2617 struct nl80211_dump_wiphy_state state = {
2618 .filter_wiphy = -1,
2619 };
2620
2621 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2622 if (ret)
2623 goto out_unlock;
2624
2625 filter_wiphy = state.filter_wiphy;
2626
2627 /*
2628 * if filtering, set cb->args[2] to +1 since 0 is the default
2629 * value needed to determine that parsing is necessary.
2630 */
2631 if (filter_wiphy >= 0)
2632 cb->args[2] = filter_wiphy + 1;
2633 else
2634 cb->args[2] = -1;
2635 } else if (cb->args[2] > 0) {
2636 filter_wiphy = cb->args[2] - 1;
2637 }
2638
2639 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2640 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2641 continue;
2642 if (wp_idx < wp_start) {
2643 wp_idx++;
2644 continue;
2645 }
2646
2647 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2648 continue;
2649
2650 if_idx = 0;
2651
2652 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2653 if (if_idx < if_start) {
2654 if_idx++;
2655 continue;
2656 }
2657 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2658 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2659 rdev, wdev, false) < 0) {
2660 goto out;
2661 }
2662 if_idx++;
2663 }
2664
2665 wp_idx++;
2666 }
2667 out:
2668 cb->args[0] = wp_idx;
2669 cb->args[1] = if_idx;
2670
2671 ret = skb->len;
2672 out_unlock:
2673 rtnl_unlock();
2674
2675 return ret;
2676 }
2677
2678 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2679 {
2680 struct sk_buff *msg;
2681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2682 struct wireless_dev *wdev = info->user_ptr[1];
2683
2684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2685 if (!msg)
2686 return -ENOMEM;
2687
2688 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2689 rdev, wdev, false) < 0) {
2690 nlmsg_free(msg);
2691 return -ENOBUFS;
2692 }
2693
2694 return genlmsg_reply(msg, info);
2695 }
2696
2697 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2698 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2699 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2700 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2701 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2702 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2703 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2704 };
2705
2706 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2707 {
2708 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2709 int flag;
2710
2711 *mntrflags = 0;
2712
2713 if (!nla)
2714 return -EINVAL;
2715
2716 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2717 mntr_flags_policy, NULL))
2718 return -EINVAL;
2719
2720 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2721 if (flags[flag])
2722 *mntrflags |= (1<<flag);
2723
2724 *mntrflags |= MONITOR_FLAG_CHANGED;
2725
2726 return 0;
2727 }
2728
2729 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2730 enum nl80211_iftype type,
2731 struct genl_info *info,
2732 struct vif_params *params)
2733 {
2734 bool change = false;
2735 int err;
2736
2737 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2738 if (type != NL80211_IFTYPE_MONITOR)
2739 return -EINVAL;
2740
2741 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2742 &params->flags);
2743 if (err)
2744 return err;
2745
2746 change = true;
2747 }
2748
2749 if (params->flags & MONITOR_FLAG_ACTIVE &&
2750 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2751 return -EOPNOTSUPP;
2752
2753 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2754 const u8 *mumimo_groups;
2755 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2756
2757 if (type != NL80211_IFTYPE_MONITOR)
2758 return -EINVAL;
2759
2760 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2761 return -EOPNOTSUPP;
2762
2763 mumimo_groups =
2764 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2765
2766 /* bits 0 and 63 are reserved and must be zero */
2767 if ((mumimo_groups[0] & BIT(0)) ||
2768 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2769 return -EINVAL;
2770
2771 params->vht_mumimo_groups = mumimo_groups;
2772 change = true;
2773 }
2774
2775 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2776 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2777
2778 if (type != NL80211_IFTYPE_MONITOR)
2779 return -EINVAL;
2780
2781 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2782 return -EOPNOTSUPP;
2783
2784 params->vht_mumimo_follow_addr =
2785 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2786 change = true;
2787 }
2788
2789 return change ? 1 : 0;
2790 }
2791
2792 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2793 struct net_device *netdev, u8 use_4addr,
2794 enum nl80211_iftype iftype)
2795 {
2796 if (!use_4addr) {
2797 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2798 return -EBUSY;
2799 return 0;
2800 }
2801
2802 switch (iftype) {
2803 case NL80211_IFTYPE_AP_VLAN:
2804 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2805 return 0;
2806 break;
2807 case NL80211_IFTYPE_STATION:
2808 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2809 return 0;
2810 break;
2811 default:
2812 break;
2813 }
2814
2815 return -EOPNOTSUPP;
2816 }
2817
2818 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2819 {
2820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2821 struct vif_params params;
2822 int err;
2823 enum nl80211_iftype otype, ntype;
2824 struct net_device *dev = info->user_ptr[1];
2825 bool change = false;
2826
2827 memset(&params, 0, sizeof(params));
2828
2829 otype = ntype = dev->ieee80211_ptr->iftype;
2830
2831 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2832 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2833 if (otype != ntype)
2834 change = true;
2835 if (ntype > NL80211_IFTYPE_MAX)
2836 return -EINVAL;
2837 }
2838
2839 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2840 struct wireless_dev *wdev = dev->ieee80211_ptr;
2841
2842 if (ntype != NL80211_IFTYPE_MESH_POINT)
2843 return -EINVAL;
2844 if (netif_running(dev))
2845 return -EBUSY;
2846
2847 wdev_lock(wdev);
2848 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2849 IEEE80211_MAX_MESH_ID_LEN);
2850 wdev->mesh_id_up_len =
2851 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2852 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2853 wdev->mesh_id_up_len);
2854 wdev_unlock(wdev);
2855 }
2856
2857 if (info->attrs[NL80211_ATTR_4ADDR]) {
2858 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2859 change = true;
2860 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2861 if (err)
2862 return err;
2863 } else {
2864 params.use_4addr = -1;
2865 }
2866
2867 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2868 if (err < 0)
2869 return err;
2870 if (err > 0)
2871 change = true;
2872
2873 if (change)
2874 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2875 else
2876 err = 0;
2877
2878 if (!err && params.use_4addr != -1)
2879 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2880
2881 return err;
2882 }
2883
2884 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2885 {
2886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2887 struct vif_params params;
2888 struct wireless_dev *wdev;
2889 struct sk_buff *msg;
2890 int err;
2891 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2892
2893 /* to avoid failing a new interface creation due to pending removal */
2894 cfg80211_destroy_ifaces(rdev);
2895
2896 memset(&params, 0, sizeof(params));
2897
2898 if (!info->attrs[NL80211_ATTR_IFNAME])
2899 return -EINVAL;
2900
2901 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2902 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2903 if (type > NL80211_IFTYPE_MAX)
2904 return -EINVAL;
2905 }
2906
2907 if (!rdev->ops->add_virtual_intf ||
2908 !(rdev->wiphy.interface_modes & (1 << type)))
2909 return -EOPNOTSUPP;
2910
2911 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2912 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2913 info->attrs[NL80211_ATTR_MAC]) {
2914 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2915 ETH_ALEN);
2916 if (!is_valid_ether_addr(params.macaddr))
2917 return -EADDRNOTAVAIL;
2918 }
2919
2920 if (info->attrs[NL80211_ATTR_4ADDR]) {
2921 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2922 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2923 if (err)
2924 return err;
2925 }
2926
2927 err = nl80211_parse_mon_options(rdev, type, info, &params);
2928 if (err < 0)
2929 return err;
2930
2931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2932 if (!msg)
2933 return -ENOMEM;
2934
2935 wdev = rdev_add_virtual_intf(rdev,
2936 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2937 NET_NAME_USER, type, &params);
2938 if (WARN_ON(!wdev)) {
2939 nlmsg_free(msg);
2940 return -EPROTO;
2941 } else if (IS_ERR(wdev)) {
2942 nlmsg_free(msg);
2943 return PTR_ERR(wdev);
2944 }
2945
2946 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2947 wdev->owner_nlportid = info->snd_portid;
2948
2949 switch (type) {
2950 case NL80211_IFTYPE_MESH_POINT:
2951 if (!info->attrs[NL80211_ATTR_MESH_ID])
2952 break;
2953 wdev_lock(wdev);
2954 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2955 IEEE80211_MAX_MESH_ID_LEN);
2956 wdev->mesh_id_up_len =
2957 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2958 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2959 wdev->mesh_id_up_len);
2960 wdev_unlock(wdev);
2961 break;
2962 case NL80211_IFTYPE_NAN:
2963 case NL80211_IFTYPE_P2P_DEVICE:
2964 /*
2965 * P2P Device and NAN do not have a netdev, so don't go
2966 * through the netdev notifier and must be added here
2967 */
2968 mutex_init(&wdev->mtx);
2969 INIT_LIST_HEAD(&wdev->event_list);
2970 spin_lock_init(&wdev->event_lock);
2971 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2972 spin_lock_init(&wdev->mgmt_registrations_lock);
2973
2974 wdev->identifier = ++rdev->wdev_id;
2975 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2976 rdev->devlist_generation++;
2977 break;
2978 default:
2979 break;
2980 }
2981
2982 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2983 rdev, wdev, false) < 0) {
2984 nlmsg_free(msg);
2985 return -ENOBUFS;
2986 }
2987
2988 /*
2989 * For wdevs which have no associated netdev object (e.g. of type
2990 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2991 * For all other types, the event will be generated from the
2992 * netdev notifier
2993 */
2994 if (!wdev->netdev)
2995 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2996
2997 return genlmsg_reply(msg, info);
2998 }
2999
3000 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3001 {
3002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3003 struct wireless_dev *wdev = info->user_ptr[1];
3004
3005 if (!rdev->ops->del_virtual_intf)
3006 return -EOPNOTSUPP;
3007
3008 /*
3009 * If we remove a wireless device without a netdev then clear
3010 * user_ptr[1] so that nl80211_post_doit won't dereference it
3011 * to check if it needs to do dev_put(). Otherwise it crashes
3012 * since the wdev has been freed, unlike with a netdev where
3013 * we need the dev_put() for the netdev to really be freed.
3014 */
3015 if (!wdev->netdev)
3016 info->user_ptr[1] = NULL;
3017
3018 return rdev_del_virtual_intf(rdev, wdev);
3019 }
3020
3021 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3022 {
3023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3024 struct net_device *dev = info->user_ptr[1];
3025 u16 noack_map;
3026
3027 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3028 return -EINVAL;
3029
3030 if (!rdev->ops->set_noack_map)
3031 return -EOPNOTSUPP;
3032
3033 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3034
3035 return rdev_set_noack_map(rdev, dev, noack_map);
3036 }
3037
3038 struct get_key_cookie {
3039 struct sk_buff *msg;
3040 int error;
3041 int idx;
3042 };
3043
3044 static void get_key_callback(void *c, struct key_params *params)
3045 {
3046 struct nlattr *key;
3047 struct get_key_cookie *cookie = c;
3048
3049 if ((params->key &&
3050 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3051 params->key_len, params->key)) ||
3052 (params->seq &&
3053 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3054 params->seq_len, params->seq)) ||
3055 (params->cipher &&
3056 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3057 params->cipher)))
3058 goto nla_put_failure;
3059
3060 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3061 if (!key)
3062 goto nla_put_failure;
3063
3064 if ((params->key &&
3065 nla_put(cookie->msg, NL80211_KEY_DATA,
3066 params->key_len, params->key)) ||
3067 (params->seq &&
3068 nla_put(cookie->msg, NL80211_KEY_SEQ,
3069 params->seq_len, params->seq)) ||
3070 (params->cipher &&
3071 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3072 params->cipher)))
3073 goto nla_put_failure;
3074
3075 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3076 goto nla_put_failure;
3077
3078 nla_nest_end(cookie->msg, key);
3079
3080 return;
3081 nla_put_failure:
3082 cookie->error = 1;
3083 }
3084
3085 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3086 {
3087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3088 int err;
3089 struct net_device *dev = info->user_ptr[1];
3090 u8 key_idx = 0;
3091 const u8 *mac_addr = NULL;
3092 bool pairwise;
3093 struct get_key_cookie cookie = {
3094 .error = 0,
3095 };
3096 void *hdr;
3097 struct sk_buff *msg;
3098
3099 if (info->attrs[NL80211_ATTR_KEY_IDX])
3100 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3101
3102 if (key_idx > 5)
3103 return -EINVAL;
3104
3105 if (info->attrs[NL80211_ATTR_MAC])
3106 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3107
3108 pairwise = !!mac_addr;
3109 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3110 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3111
3112 if (kt >= NUM_NL80211_KEYTYPES)
3113 return -EINVAL;
3114 if (kt != NL80211_KEYTYPE_GROUP &&
3115 kt != NL80211_KEYTYPE_PAIRWISE)
3116 return -EINVAL;
3117 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3118 }
3119
3120 if (!rdev->ops->get_key)
3121 return -EOPNOTSUPP;
3122
3123 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3124 return -ENOENT;
3125
3126 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3127 if (!msg)
3128 return -ENOMEM;
3129
3130 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3131 NL80211_CMD_NEW_KEY);
3132 if (!hdr)
3133 goto nla_put_failure;
3134
3135 cookie.msg = msg;
3136 cookie.idx = key_idx;
3137
3138 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3139 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3140 goto nla_put_failure;
3141 if (mac_addr &&
3142 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3143 goto nla_put_failure;
3144
3145 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3146 get_key_callback);
3147
3148 if (err)
3149 goto free_msg;
3150
3151 if (cookie.error)
3152 goto nla_put_failure;
3153
3154 genlmsg_end(msg, hdr);
3155 return genlmsg_reply(msg, info);
3156
3157 nla_put_failure:
3158 err = -ENOBUFS;
3159 free_msg:
3160 nlmsg_free(msg);
3161 return err;
3162 }
3163
3164 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3165 {
3166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3167 struct key_parse key;
3168 int err;
3169 struct net_device *dev = info->user_ptr[1];
3170
3171 err = nl80211_parse_key(info, &key);
3172 if (err)
3173 return err;
3174
3175 if (key.idx < 0)
3176 return -EINVAL;
3177
3178 /* only support setting default key */
3179 if (!key.def && !key.defmgmt)
3180 return -EINVAL;
3181
3182 wdev_lock(dev->ieee80211_ptr);
3183
3184 if (key.def) {
3185 if (!rdev->ops->set_default_key) {
3186 err = -EOPNOTSUPP;
3187 goto out;
3188 }
3189
3190 err = nl80211_key_allowed(dev->ieee80211_ptr);
3191 if (err)
3192 goto out;
3193
3194 err = rdev_set_default_key(rdev, dev, key.idx,
3195 key.def_uni, key.def_multi);
3196
3197 if (err)
3198 goto out;
3199
3200 #ifdef CONFIG_CFG80211_WEXT
3201 dev->ieee80211_ptr->wext.default_key = key.idx;
3202 #endif
3203 } else {
3204 if (key.def_uni || !key.def_multi) {
3205 err = -EINVAL;
3206 goto out;
3207 }
3208
3209 if (!rdev->ops->set_default_mgmt_key) {
3210 err = -EOPNOTSUPP;
3211 goto out;
3212 }
3213
3214 err = nl80211_key_allowed(dev->ieee80211_ptr);
3215 if (err)
3216 goto out;
3217
3218 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3219 if (err)
3220 goto out;
3221
3222 #ifdef CONFIG_CFG80211_WEXT
3223 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3224 #endif
3225 }
3226
3227 out:
3228 wdev_unlock(dev->ieee80211_ptr);
3229
3230 return err;
3231 }
3232
3233 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3234 {
3235 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3236 int err;
3237 struct net_device *dev = info->user_ptr[1];
3238 struct key_parse key;
3239 const u8 *mac_addr = NULL;
3240
3241 err = nl80211_parse_key(info, &key);
3242 if (err)
3243 return err;
3244
3245 if (!key.p.key)
3246 return -EINVAL;
3247
3248 if (info->attrs[NL80211_ATTR_MAC])
3249 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3250
3251 if (key.type == -1) {
3252 if (mac_addr)
3253 key.type = NL80211_KEYTYPE_PAIRWISE;
3254 else
3255 key.type = NL80211_KEYTYPE_GROUP;
3256 }
3257
3258 /* for now */
3259 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3260 key.type != NL80211_KEYTYPE_GROUP)
3261 return -EINVAL;
3262
3263 if (!rdev->ops->add_key)
3264 return -EOPNOTSUPP;
3265
3266 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3267 key.type == NL80211_KEYTYPE_PAIRWISE,
3268 mac_addr))
3269 return -EINVAL;
3270
3271 wdev_lock(dev->ieee80211_ptr);
3272 err = nl80211_key_allowed(dev->ieee80211_ptr);
3273 if (!err)
3274 err = rdev_add_key(rdev, dev, key.idx,
3275 key.type == NL80211_KEYTYPE_PAIRWISE,
3276 mac_addr, &key.p);
3277 wdev_unlock(dev->ieee80211_ptr);
3278
3279 return err;
3280 }
3281
3282 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3283 {
3284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3285 int err;
3286 struct net_device *dev = info->user_ptr[1];
3287 u8 *mac_addr = NULL;
3288 struct key_parse key;
3289
3290 err = nl80211_parse_key(info, &key);
3291 if (err)
3292 return err;
3293
3294 if (info->attrs[NL80211_ATTR_MAC])
3295 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3296
3297 if (key.type == -1) {
3298 if (mac_addr)
3299 key.type = NL80211_KEYTYPE_PAIRWISE;
3300 else
3301 key.type = NL80211_KEYTYPE_GROUP;
3302 }
3303
3304 /* for now */
3305 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3306 key.type != NL80211_KEYTYPE_GROUP)
3307 return -EINVAL;
3308
3309 if (!rdev->ops->del_key)
3310 return -EOPNOTSUPP;
3311
3312 wdev_lock(dev->ieee80211_ptr);
3313 err = nl80211_key_allowed(dev->ieee80211_ptr);
3314
3315 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3316 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3317 err = -ENOENT;
3318
3319 if (!err)
3320 err = rdev_del_key(rdev, dev, key.idx,
3321 key.type == NL80211_KEYTYPE_PAIRWISE,
3322 mac_addr);
3323
3324 #ifdef CONFIG_CFG80211_WEXT
3325 if (!err) {
3326 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3327 dev->ieee80211_ptr->wext.default_key = -1;
3328 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3329 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3330 }
3331 #endif
3332 wdev_unlock(dev->ieee80211_ptr);
3333
3334 return err;
3335 }
3336
3337 /* This function returns an error or the number of nested attributes */
3338 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3339 {
3340 struct nlattr *attr;
3341 int n_entries = 0, tmp;
3342
3343 nla_for_each_nested(attr, nl_attr, tmp) {
3344 if (nla_len(attr) != ETH_ALEN)
3345 return -EINVAL;
3346
3347 n_entries++;
3348 }
3349
3350 return n_entries;
3351 }
3352
3353 /*
3354 * This function parses ACL information and allocates memory for ACL data.
3355 * On successful return, the calling function is responsible to free the
3356 * ACL buffer returned by this function.
3357 */
3358 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3359 struct genl_info *info)
3360 {
3361 enum nl80211_acl_policy acl_policy;
3362 struct nlattr *attr;
3363 struct cfg80211_acl_data *acl;
3364 int i = 0, n_entries, tmp;
3365
3366 if (!wiphy->max_acl_mac_addrs)
3367 return ERR_PTR(-EOPNOTSUPP);
3368
3369 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3370 return ERR_PTR(-EINVAL);
3371
3372 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3373 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3374 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3375 return ERR_PTR(-EINVAL);
3376
3377 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3378 return ERR_PTR(-EINVAL);
3379
3380 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3381 if (n_entries < 0)
3382 return ERR_PTR(n_entries);
3383
3384 if (n_entries > wiphy->max_acl_mac_addrs)
3385 return ERR_PTR(-ENOTSUPP);
3386
3387 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3388 GFP_KERNEL);
3389 if (!acl)
3390 return ERR_PTR(-ENOMEM);
3391
3392 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3393 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3394 i++;
3395 }
3396
3397 acl->n_acl_entries = n_entries;
3398 acl->acl_policy = acl_policy;
3399
3400 return acl;
3401 }
3402
3403 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3404 {
3405 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3406 struct net_device *dev = info->user_ptr[1];
3407 struct cfg80211_acl_data *acl;
3408 int err;
3409
3410 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3411 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3412 return -EOPNOTSUPP;
3413
3414 if (!dev->ieee80211_ptr->beacon_interval)
3415 return -EINVAL;
3416
3417 acl = parse_acl_data(&rdev->wiphy, info);
3418 if (IS_ERR(acl))
3419 return PTR_ERR(acl);
3420
3421 err = rdev_set_mac_acl(rdev, dev, acl);
3422
3423 kfree(acl);
3424
3425 return err;
3426 }
3427
3428 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3429 u8 *rates, u8 rates_len)
3430 {
3431 u8 i;
3432 u32 mask = 0;
3433
3434 for (i = 0; i < rates_len; i++) {
3435 int rate = (rates[i] & 0x7f) * 5;
3436 int ridx;
3437
3438 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3439 struct ieee80211_rate *srate =
3440 &sband->bitrates[ridx];
3441 if (rate == srate->bitrate) {
3442 mask |= 1 << ridx;
3443 break;
3444 }
3445 }
3446 if (ridx == sband->n_bitrates)
3447 return 0; /* rate not found */
3448 }
3449
3450 return mask;
3451 }
3452
3453 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3454 u8 *rates, u8 rates_len,
3455 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3456 {
3457 u8 i;
3458
3459 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3460
3461 for (i = 0; i < rates_len; i++) {
3462 int ridx, rbit;
3463
3464 ridx = rates[i] / 8;
3465 rbit = BIT(rates[i] % 8);
3466
3467 /* check validity */
3468 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3469 return false;
3470
3471 /* check availability */
3472 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3473 mcs[ridx] |= rbit;
3474 else
3475 return false;
3476 }
3477
3478 return true;
3479 }
3480
3481 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3482 {
3483 u16 mcs_mask = 0;
3484
3485 switch (vht_mcs_map) {
3486 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3487 break;
3488 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3489 mcs_mask = 0x00FF;
3490 break;
3491 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3492 mcs_mask = 0x01FF;
3493 break;
3494 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3495 mcs_mask = 0x03FF;
3496 break;
3497 default:
3498 break;
3499 }
3500
3501 return mcs_mask;
3502 }
3503
3504 static void vht_build_mcs_mask(u16 vht_mcs_map,
3505 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3506 {
3507 u8 nss;
3508
3509 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3510 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3511 vht_mcs_map >>= 2;
3512 }
3513 }
3514
3515 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3516 struct nl80211_txrate_vht *txrate,
3517 u16 mcs[NL80211_VHT_NSS_MAX])
3518 {
3519 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3520 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3521 u8 i;
3522
3523 if (!sband->vht_cap.vht_supported)
3524 return false;
3525
3526 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3527
3528 /* Build vht_mcs_mask from VHT capabilities */
3529 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3530
3531 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3532 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3533 mcs[i] = txrate->mcs[i];
3534 else
3535 return false;
3536 }
3537
3538 return true;
3539 }
3540
3541 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3542 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3543 .len = NL80211_MAX_SUPP_RATES },
3544 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3545 .len = NL80211_MAX_SUPP_HT_RATES },
3546 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3547 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3548 };
3549
3550 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3551 struct cfg80211_bitrate_mask *mask)
3552 {
3553 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3555 int rem, i;
3556 struct nlattr *tx_rates;
3557 struct ieee80211_supported_band *sband;
3558 u16 vht_tx_mcs_map;
3559
3560 memset(mask, 0, sizeof(*mask));
3561 /* Default to all rates enabled */
3562 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3563 sband = rdev->wiphy.bands[i];
3564
3565 if (!sband)
3566 continue;
3567
3568 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3569 memcpy(mask->control[i].ht_mcs,
3570 sband->ht_cap.mcs.rx_mask,
3571 sizeof(mask->control[i].ht_mcs));
3572
3573 if (!sband->vht_cap.vht_supported)
3574 continue;
3575
3576 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3577 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3578 }
3579
3580 /* if no rates are given set it back to the defaults */
3581 if (!info->attrs[NL80211_ATTR_TX_RATES])
3582 goto out;
3583
3584 /* The nested attribute uses enum nl80211_band as the index. This maps
3585 * directly to the enum nl80211_band values used in cfg80211.
3586 */
3587 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3588 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3589 enum nl80211_band band = nla_type(tx_rates);
3590 int err;
3591
3592 if (band < 0 || band >= NUM_NL80211_BANDS)
3593 return -EINVAL;
3594 sband = rdev->wiphy.bands[band];
3595 if (sband == NULL)
3596 return -EINVAL;
3597 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3598 nl80211_txattr_policy, info->extack);
3599 if (err)
3600 return err;
3601 if (tb[NL80211_TXRATE_LEGACY]) {
3602 mask->control[band].legacy = rateset_to_mask(
3603 sband,
3604 nla_data(tb[NL80211_TXRATE_LEGACY]),
3605 nla_len(tb[NL80211_TXRATE_LEGACY]));
3606 if ((mask->control[band].legacy == 0) &&
3607 nla_len(tb[NL80211_TXRATE_LEGACY]))
3608 return -EINVAL;
3609 }
3610 if (tb[NL80211_TXRATE_HT]) {
3611 if (!ht_rateset_to_mask(
3612 sband,
3613 nla_data(tb[NL80211_TXRATE_HT]),
3614 nla_len(tb[NL80211_TXRATE_HT]),
3615 mask->control[band].ht_mcs))
3616 return -EINVAL;
3617 }
3618 if (tb[NL80211_TXRATE_VHT]) {
3619 if (!vht_set_mcs_mask(
3620 sband,
3621 nla_data(tb[NL80211_TXRATE_VHT]),
3622 mask->control[band].vht_mcs))
3623 return -EINVAL;
3624 }
3625 if (tb[NL80211_TXRATE_GI]) {
3626 mask->control[band].gi =
3627 nla_get_u8(tb[NL80211_TXRATE_GI]);
3628 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3629 return -EINVAL;
3630 }
3631
3632 if (mask->control[band].legacy == 0) {
3633 /* don't allow empty legacy rates if HT or VHT
3634 * are not even supported.
3635 */
3636 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3637 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3638 return -EINVAL;
3639
3640 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3641 if (mask->control[band].ht_mcs[i])
3642 goto out;
3643
3644 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3645 if (mask->control[band].vht_mcs[i])
3646 goto out;
3647
3648 /* legacy and mcs rates may not be both empty */
3649 return -EINVAL;
3650 }
3651 }
3652
3653 out:
3654 return 0;
3655 }
3656
3657 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3658 enum nl80211_band band,
3659 struct cfg80211_bitrate_mask *beacon_rate)
3660 {
3661 u32 count_ht, count_vht, i;
3662 u32 rate = beacon_rate->control[band].legacy;
3663
3664 /* Allow only one rate */
3665 if (hweight32(rate) > 1)
3666 return -EINVAL;
3667
3668 count_ht = 0;
3669 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3670 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3671 return -EINVAL;
3672 } else if (beacon_rate->control[band].ht_mcs[i]) {
3673 count_ht++;
3674 if (count_ht > 1)
3675 return -EINVAL;
3676 }
3677 if (count_ht && rate)
3678 return -EINVAL;
3679 }
3680
3681 count_vht = 0;
3682 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3683 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3684 return -EINVAL;
3685 } else if (beacon_rate->control[band].vht_mcs[i]) {
3686 count_vht++;
3687 if (count_vht > 1)
3688 return -EINVAL;
3689 }
3690 if (count_vht && rate)
3691 return -EINVAL;
3692 }
3693
3694 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3695 return -EINVAL;
3696
3697 if (rate &&
3698 !wiphy_ext_feature_isset(&rdev->wiphy,
3699 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3700 return -EINVAL;
3701 if (count_ht &&
3702 !wiphy_ext_feature_isset(&rdev->wiphy,
3703 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3704 return -EINVAL;
3705 if (count_vht &&
3706 !wiphy_ext_feature_isset(&rdev->wiphy,
3707 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3708 return -EINVAL;
3709
3710 return 0;
3711 }
3712
3713 static int nl80211_parse_beacon(struct nlattr *attrs[],
3714 struct cfg80211_beacon_data *bcn)
3715 {
3716 bool haveinfo = false;
3717
3718 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3719 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3720 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3721 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3722 return -EINVAL;
3723
3724 memset(bcn, 0, sizeof(*bcn));
3725
3726 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3727 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3728 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3729 if (!bcn->head_len)
3730 return -EINVAL;
3731 haveinfo = true;
3732 }
3733
3734 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3735 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3736 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3737 haveinfo = true;
3738 }
3739
3740 if (!haveinfo)
3741 return -EINVAL;
3742
3743 if (attrs[NL80211_ATTR_IE]) {
3744 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3745 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3746 }
3747
3748 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3749 bcn->proberesp_ies =
3750 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3751 bcn->proberesp_ies_len =
3752 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3753 }
3754
3755 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3756 bcn->assocresp_ies =
3757 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3758 bcn->assocresp_ies_len =
3759 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3760 }
3761
3762 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3763 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3764 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3765 }
3766
3767 return 0;
3768 }
3769
3770 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3771 const u8 *rates)
3772 {
3773 int i;
3774
3775 if (!rates)
3776 return;
3777
3778 for (i = 0; i < rates[1]; i++) {
3779 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3780 params->ht_required = true;
3781 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3782 params->vht_required = true;
3783 }
3784 }
3785
3786 /*
3787 * Since the nl80211 API didn't include, from the beginning, attributes about
3788 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3789 * benefit of drivers that rebuild IEs in the firmware.
3790 */
3791 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3792 {
3793 const struct cfg80211_beacon_data *bcn = &params->beacon;
3794 size_t ies_len = bcn->tail_len;
3795 const u8 *ies = bcn->tail;
3796 const u8 *rates;
3797 const u8 *cap;
3798
3799 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3800 nl80211_check_ap_rate_selectors(params, rates);
3801
3802 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3803 nl80211_check_ap_rate_selectors(params, rates);
3804
3805 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3806 if (cap && cap[1] >= sizeof(*params->ht_cap))
3807 params->ht_cap = (void *)(cap + 2);
3808 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3809 if (cap && cap[1] >= sizeof(*params->vht_cap))
3810 params->vht_cap = (void *)(cap + 2);
3811 }
3812
3813 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3814 struct cfg80211_ap_settings *params)
3815 {
3816 struct wireless_dev *wdev;
3817 bool ret = false;
3818
3819 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3820 if (wdev->iftype != NL80211_IFTYPE_AP &&
3821 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3822 continue;
3823
3824 if (!wdev->preset_chandef.chan)
3825 continue;
3826
3827 params->chandef = wdev->preset_chandef;
3828 ret = true;
3829 break;
3830 }
3831
3832 return ret;
3833 }
3834
3835 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3836 enum nl80211_auth_type auth_type,
3837 enum nl80211_commands cmd)
3838 {
3839 if (auth_type > NL80211_AUTHTYPE_MAX)
3840 return false;
3841
3842 switch (cmd) {
3843 case NL80211_CMD_AUTHENTICATE:
3844 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3845 auth_type == NL80211_AUTHTYPE_SAE)
3846 return false;
3847 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3848 NL80211_EXT_FEATURE_FILS_STA) &&
3849 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3850 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3851 auth_type == NL80211_AUTHTYPE_FILS_PK))
3852 return false;
3853 return true;
3854 case NL80211_CMD_CONNECT:
3855 /* SAE not supported yet */
3856 if (auth_type == NL80211_AUTHTYPE_SAE)
3857 return false;
3858 /* FILS with SK PFS or PK not supported yet */
3859 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3860 auth_type == NL80211_AUTHTYPE_FILS_PK)
3861 return false;
3862 if (!wiphy_ext_feature_isset(
3863 &rdev->wiphy,
3864 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3865 auth_type == NL80211_AUTHTYPE_FILS_SK)
3866 return false;
3867 return true;
3868 case NL80211_CMD_START_AP:
3869 /* SAE not supported yet */
3870 if (auth_type == NL80211_AUTHTYPE_SAE)
3871 return false;
3872 /* FILS not supported yet */
3873 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3874 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3875 auth_type == NL80211_AUTHTYPE_FILS_PK)
3876 return false;
3877 return true;
3878 default:
3879 return false;
3880 }
3881 }
3882
3883 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3884 {
3885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3886 struct net_device *dev = info->user_ptr[1];
3887 struct wireless_dev *wdev = dev->ieee80211_ptr;
3888 struct cfg80211_ap_settings params;
3889 int err;
3890
3891 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3892 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3893 return -EOPNOTSUPP;
3894
3895 if (!rdev->ops->start_ap)
3896 return -EOPNOTSUPP;
3897
3898 if (wdev->beacon_interval)
3899 return -EALREADY;
3900
3901 memset(&params, 0, sizeof(params));
3902
3903 /* these are required for START_AP */
3904 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3905 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3906 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3907 return -EINVAL;
3908
3909 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3910 if (err)
3911 return err;
3912
3913 params.beacon_interval =
3914 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3915 params.dtim_period =
3916 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3917
3918 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3919 params.beacon_interval);
3920 if (err)
3921 return err;
3922
3923 /*
3924 * In theory, some of these attributes should be required here
3925 * but since they were not used when the command was originally
3926 * added, keep them optional for old user space programs to let
3927 * them continue to work with drivers that do not need the
3928 * additional information -- drivers must check!
3929 */
3930 if (info->attrs[NL80211_ATTR_SSID]) {
3931 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3932 params.ssid_len =
3933 nla_len(info->attrs[NL80211_ATTR_SSID]);
3934 if (params.ssid_len == 0 ||
3935 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3936 return -EINVAL;
3937 }
3938
3939 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3940 params.hidden_ssid = nla_get_u32(
3941 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3942 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3943 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3944 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3945 return -EINVAL;
3946 }
3947
3948 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3949
3950 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3951 params.auth_type = nla_get_u32(
3952 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3953 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3954 NL80211_CMD_START_AP))
3955 return -EINVAL;
3956 } else
3957 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3958
3959 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3960 NL80211_MAX_NR_CIPHER_SUITES);
3961 if (err)
3962 return err;
3963
3964 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3965 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3966 return -EOPNOTSUPP;
3967 params.inactivity_timeout = nla_get_u16(
3968 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3969 }
3970
3971 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3973 return -EINVAL;
3974 params.p2p_ctwindow =
3975 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3976 if (params.p2p_ctwindow > 127)
3977 return -EINVAL;
3978 if (params.p2p_ctwindow != 0 &&
3979 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3980 return -EINVAL;
3981 }
3982
3983 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3984 u8 tmp;
3985
3986 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3987 return -EINVAL;
3988 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3989 if (tmp > 1)
3990 return -EINVAL;
3991 params.p2p_opp_ps = tmp;
3992 if (params.p2p_opp_ps != 0 &&
3993 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3994 return -EINVAL;
3995 }
3996
3997 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3998 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3999 if (err)
4000 return err;
4001 } else if (wdev->preset_chandef.chan) {
4002 params.chandef = wdev->preset_chandef;
4003 } else if (!nl80211_get_ap_channel(rdev, &params))
4004 return -EINVAL;
4005
4006 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4007 wdev->iftype))
4008 return -EINVAL;
4009
4010 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4011 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4012 if (err)
4013 return err;
4014
4015 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4016 &params.beacon_rate);
4017 if (err)
4018 return err;
4019 }
4020
4021 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4022 params.smps_mode =
4023 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4024 switch (params.smps_mode) {
4025 case NL80211_SMPS_OFF:
4026 break;
4027 case NL80211_SMPS_STATIC:
4028 if (!(rdev->wiphy.features &
4029 NL80211_FEATURE_STATIC_SMPS))
4030 return -EINVAL;
4031 break;
4032 case NL80211_SMPS_DYNAMIC:
4033 if (!(rdev->wiphy.features &
4034 NL80211_FEATURE_DYNAMIC_SMPS))
4035 return -EINVAL;
4036 break;
4037 default:
4038 return -EINVAL;
4039 }
4040 } else {
4041 params.smps_mode = NL80211_SMPS_OFF;
4042 }
4043
4044 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4045 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4046 return -EOPNOTSUPP;
4047
4048 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4049 params.acl = parse_acl_data(&rdev->wiphy, info);
4050 if (IS_ERR(params.acl))
4051 return PTR_ERR(params.acl);
4052 }
4053
4054 nl80211_calculate_ap_params(&params);
4055
4056 wdev_lock(wdev);
4057 err = rdev_start_ap(rdev, dev, &params);
4058 if (!err) {
4059 wdev->preset_chandef = params.chandef;
4060 wdev->beacon_interval = params.beacon_interval;
4061 wdev->chandef = params.chandef;
4062 wdev->ssid_len = params.ssid_len;
4063 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4064 }
4065 wdev_unlock(wdev);
4066
4067 kfree(params.acl);
4068
4069 return err;
4070 }
4071
4072 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4073 {
4074 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4075 struct net_device *dev = info->user_ptr[1];
4076 struct wireless_dev *wdev = dev->ieee80211_ptr;
4077 struct cfg80211_beacon_data params;
4078 int err;
4079
4080 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4081 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4082 return -EOPNOTSUPP;
4083
4084 if (!rdev->ops->change_beacon)
4085 return -EOPNOTSUPP;
4086
4087 if (!wdev->beacon_interval)
4088 return -EINVAL;
4089
4090 err = nl80211_parse_beacon(info->attrs, &params);
4091 if (err)
4092 return err;
4093
4094 wdev_lock(wdev);
4095 err = rdev_change_beacon(rdev, dev, &params);
4096 wdev_unlock(wdev);
4097
4098 return err;
4099 }
4100
4101 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4102 {
4103 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4104 struct net_device *dev = info->user_ptr[1];
4105
4106 return cfg80211_stop_ap(rdev, dev, false);
4107 }
4108
4109 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4110 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4111 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4112 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4113 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4114 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4115 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4116 };
4117
4118 static int parse_station_flags(struct genl_info *info,
4119 enum nl80211_iftype iftype,
4120 struct station_parameters *params)
4121 {
4122 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4123 struct nlattr *nla;
4124 int flag;
4125
4126 /*
4127 * Try parsing the new attribute first so userspace
4128 * can specify both for older kernels.
4129 */
4130 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4131 if (nla) {
4132 struct nl80211_sta_flag_update *sta_flags;
4133
4134 sta_flags = nla_data(nla);
4135 params->sta_flags_mask = sta_flags->mask;
4136 params->sta_flags_set = sta_flags->set;
4137 params->sta_flags_set &= params->sta_flags_mask;
4138 if ((params->sta_flags_mask |
4139 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4140 return -EINVAL;
4141 return 0;
4142 }
4143
4144 /* if present, parse the old attribute */
4145
4146 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4147 if (!nla)
4148 return 0;
4149
4150 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4151 sta_flags_policy, info->extack))
4152 return -EINVAL;
4153
4154 /*
4155 * Only allow certain flags for interface types so that
4156 * other attributes are silently ignored. Remember that
4157 * this is backward compatibility code with old userspace
4158 * and shouldn't be hit in other cases anyway.
4159 */
4160 switch (iftype) {
4161 case NL80211_IFTYPE_AP:
4162 case NL80211_IFTYPE_AP_VLAN:
4163 case NL80211_IFTYPE_P2P_GO:
4164 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4165 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4166 BIT(NL80211_STA_FLAG_WME) |
4167 BIT(NL80211_STA_FLAG_MFP);
4168 break;
4169 case NL80211_IFTYPE_P2P_CLIENT:
4170 case NL80211_IFTYPE_STATION:
4171 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4172 BIT(NL80211_STA_FLAG_TDLS_PEER);
4173 break;
4174 case NL80211_IFTYPE_MESH_POINT:
4175 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4176 BIT(NL80211_STA_FLAG_MFP) |
4177 BIT(NL80211_STA_FLAG_AUTHORIZED);
4178 default:
4179 return -EINVAL;
4180 }
4181
4182 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4183 if (flags[flag]) {
4184 params->sta_flags_set |= (1<<flag);
4185
4186 /* no longer support new API additions in old API */
4187 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4188 return -EINVAL;
4189 }
4190 }
4191
4192 return 0;
4193 }
4194
4195 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4196 int attr)
4197 {
4198 struct nlattr *rate;
4199 u32 bitrate;
4200 u16 bitrate_compat;
4201 enum nl80211_rate_info rate_flg;
4202
4203 rate = nla_nest_start(msg, attr);
4204 if (!rate)
4205 return false;
4206
4207 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4208 bitrate = cfg80211_calculate_bitrate(info);
4209 /* report 16-bit bitrate only if we can */
4210 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4211 if (bitrate > 0 &&
4212 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4213 return false;
4214 if (bitrate_compat > 0 &&
4215 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4216 return false;
4217
4218 switch (info->bw) {
4219 case RATE_INFO_BW_5:
4220 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4221 break;
4222 case RATE_INFO_BW_10:
4223 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4224 break;
4225 default:
4226 WARN_ON(1);
4227 /* fall through */
4228 case RATE_INFO_BW_20:
4229 rate_flg = 0;
4230 break;
4231 case RATE_INFO_BW_40:
4232 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4233 break;
4234 case RATE_INFO_BW_80:
4235 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4236 break;
4237 case RATE_INFO_BW_160:
4238 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4239 break;
4240 }
4241
4242 if (rate_flg && nla_put_flag(msg, rate_flg))
4243 return false;
4244
4245 if (info->flags & RATE_INFO_FLAGS_MCS) {
4246 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4247 return false;
4248 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4249 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4250 return false;
4251 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4252 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4253 return false;
4254 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4255 return false;
4256 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4257 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4258 return false;
4259 }
4260
4261 nla_nest_end(msg, rate);
4262 return true;
4263 }
4264
4265 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4266 int id)
4267 {
4268 void *attr;
4269 int i = 0;
4270
4271 if (!mask)
4272 return true;
4273
4274 attr = nla_nest_start(msg, id);
4275 if (!attr)
4276 return false;
4277
4278 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4279 if (!(mask & BIT(i)))
4280 continue;
4281
4282 if (nla_put_u8(msg, i, signal[i]))
4283 return false;
4284 }
4285
4286 nla_nest_end(msg, attr);
4287
4288 return true;
4289 }
4290
4291 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4292 u32 seq, int flags,
4293 struct cfg80211_registered_device *rdev,
4294 struct net_device *dev,
4295 const u8 *mac_addr, struct station_info *sinfo)
4296 {
4297 void *hdr;
4298 struct nlattr *sinfoattr, *bss_param;
4299
4300 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4301 if (!hdr)
4302 return -1;
4303
4304 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4305 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4306 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4307 goto nla_put_failure;
4308
4309 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4310 if (!sinfoattr)
4311 goto nla_put_failure;
4312
4313 #define PUT_SINFO(attr, memb, type) do { \
4314 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4315 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4316 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4317 sinfo->memb)) \
4318 goto nla_put_failure; \
4319 } while (0)
4320 #define PUT_SINFO_U64(attr, memb) do { \
4321 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4322 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4323 sinfo->memb, NL80211_STA_INFO_PAD)) \
4324 goto nla_put_failure; \
4325 } while (0)
4326
4327 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4328 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4329
4330 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4331 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4332 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4333 (u32)sinfo->rx_bytes))
4334 goto nla_put_failure;
4335
4336 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4337 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4338 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4339 (u32)sinfo->tx_bytes))
4340 goto nla_put_failure;
4341
4342 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4343 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4344 PUT_SINFO(LLID, llid, u16);
4345 PUT_SINFO(PLID, plid, u16);
4346 PUT_SINFO(PLINK_STATE, plink_state, u8);
4347 PUT_SINFO_U64(RX_DURATION, rx_duration);
4348
4349 switch (rdev->wiphy.signal_type) {
4350 case CFG80211_SIGNAL_TYPE_MBM:
4351 PUT_SINFO(SIGNAL, signal, u8);
4352 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4353 break;
4354 default:
4355 break;
4356 }
4357 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4358 if (!nl80211_put_signal(msg, sinfo->chains,
4359 sinfo->chain_signal,
4360 NL80211_STA_INFO_CHAIN_SIGNAL))
4361 goto nla_put_failure;
4362 }
4363 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4364 if (!nl80211_put_signal(msg, sinfo->chains,
4365 sinfo->chain_signal_avg,
4366 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4367 goto nla_put_failure;
4368 }
4369 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4370 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4371 NL80211_STA_INFO_TX_BITRATE))
4372 goto nla_put_failure;
4373 }
4374 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4375 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4376 NL80211_STA_INFO_RX_BITRATE))
4377 goto nla_put_failure;
4378 }
4379
4380 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4381 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4382 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4383 PUT_SINFO(TX_FAILED, tx_failed, u32);
4384 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4385 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4386 PUT_SINFO(LOCAL_PM, local_pm, u32);
4387 PUT_SINFO(PEER_PM, peer_pm, u32);
4388 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4389
4390 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4391 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4392 if (!bss_param)
4393 goto nla_put_failure;
4394
4395 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4396 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4397 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4398 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4399 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4400 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4401 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4402 sinfo->bss_param.dtim_period) ||
4403 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4404 sinfo->bss_param.beacon_interval))
4405 goto nla_put_failure;
4406
4407 nla_nest_end(msg, bss_param);
4408 }
4409 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4410 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4411 sizeof(struct nl80211_sta_flag_update),
4412 &sinfo->sta_flags))
4413 goto nla_put_failure;
4414
4415 PUT_SINFO_U64(T_OFFSET, t_offset);
4416 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4417 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4418 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4419
4420 #undef PUT_SINFO
4421 #undef PUT_SINFO_U64
4422
4423 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4424 struct nlattr *tidsattr;
4425 int tid;
4426
4427 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4428 if (!tidsattr)
4429 goto nla_put_failure;
4430
4431 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4432 struct cfg80211_tid_stats *tidstats;
4433 struct nlattr *tidattr;
4434
4435 tidstats = &sinfo->pertid[tid];
4436
4437 if (!tidstats->filled)
4438 continue;
4439
4440 tidattr = nla_nest_start(msg, tid + 1);
4441 if (!tidattr)
4442 goto nla_put_failure;
4443
4444 #define PUT_TIDVAL_U64(attr, memb) do { \
4445 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4446 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4447 tidstats->memb, NL80211_TID_STATS_PAD)) \
4448 goto nla_put_failure; \
4449 } while (0)
4450
4451 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4452 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4453 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4454 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4455
4456 #undef PUT_TIDVAL_U64
4457 nla_nest_end(msg, tidattr);
4458 }
4459
4460 nla_nest_end(msg, tidsattr);
4461 }
4462
4463 nla_nest_end(msg, sinfoattr);
4464
4465 if (sinfo->assoc_req_ies_len &&
4466 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4467 sinfo->assoc_req_ies))
4468 goto nla_put_failure;
4469
4470 genlmsg_end(msg, hdr);
4471 return 0;
4472
4473 nla_put_failure:
4474 genlmsg_cancel(msg, hdr);
4475 return -EMSGSIZE;
4476 }
4477
4478 static int nl80211_dump_station(struct sk_buff *skb,
4479 struct netlink_callback *cb)
4480 {
4481 struct station_info sinfo;
4482 struct cfg80211_registered_device *rdev;
4483 struct wireless_dev *wdev;
4484 u8 mac_addr[ETH_ALEN];
4485 int sta_idx = cb->args[2];
4486 int err;
4487
4488 rtnl_lock();
4489 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4490 if (err)
4491 goto out_err;
4492
4493 if (!wdev->netdev) {
4494 err = -EINVAL;
4495 goto out_err;
4496 }
4497
4498 if (!rdev->ops->dump_station) {
4499 err = -EOPNOTSUPP;
4500 goto out_err;
4501 }
4502
4503 while (1) {
4504 memset(&sinfo, 0, sizeof(sinfo));
4505 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4506 mac_addr, &sinfo);
4507 if (err == -ENOENT)
4508 break;
4509 if (err)
4510 goto out_err;
4511
4512 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4513 NETLINK_CB(cb->skb).portid,
4514 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4515 rdev, wdev->netdev, mac_addr,
4516 &sinfo) < 0)
4517 goto out;
4518
4519 sta_idx++;
4520 }
4521
4522 out:
4523 cb->args[2] = sta_idx;
4524 err = skb->len;
4525 out_err:
4526 rtnl_unlock();
4527
4528 return err;
4529 }
4530
4531 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4532 {
4533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4534 struct net_device *dev = info->user_ptr[1];
4535 struct station_info sinfo;
4536 struct sk_buff *msg;
4537 u8 *mac_addr = NULL;
4538 int err;
4539
4540 memset(&sinfo, 0, sizeof(sinfo));
4541
4542 if (!info->attrs[NL80211_ATTR_MAC])
4543 return -EINVAL;
4544
4545 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4546
4547 if (!rdev->ops->get_station)
4548 return -EOPNOTSUPP;
4549
4550 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4551 if (err)
4552 return err;
4553
4554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4555 if (!msg)
4556 return -ENOMEM;
4557
4558 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4559 info->snd_portid, info->snd_seq, 0,
4560 rdev, dev, mac_addr, &sinfo) < 0) {
4561 nlmsg_free(msg);
4562 return -ENOBUFS;
4563 }
4564
4565 return genlmsg_reply(msg, info);
4566 }
4567
4568 int cfg80211_check_station_change(struct wiphy *wiphy,
4569 struct station_parameters *params,
4570 enum cfg80211_station_type statype)
4571 {
4572 if (params->listen_interval != -1 &&
4573 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4574 return -EINVAL;
4575
4576 if (params->support_p2p_ps != -1 &&
4577 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4578 return -EINVAL;
4579
4580 if (params->aid &&
4581 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4582 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4583 return -EINVAL;
4584
4585 /* When you run into this, adjust the code below for the new flag */
4586 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4587
4588 switch (statype) {
4589 case CFG80211_STA_MESH_PEER_KERNEL:
4590 case CFG80211_STA_MESH_PEER_USER:
4591 /*
4592 * No ignoring the TDLS flag here -- the userspace mesh
4593 * code doesn't have the bug of including TDLS in the
4594 * mask everywhere.
4595 */
4596 if (params->sta_flags_mask &
4597 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4598 BIT(NL80211_STA_FLAG_MFP) |
4599 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4600 return -EINVAL;
4601 break;
4602 case CFG80211_STA_TDLS_PEER_SETUP:
4603 case CFG80211_STA_TDLS_PEER_ACTIVE:
4604 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4605 return -EINVAL;
4606 /* ignore since it can't change */
4607 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4608 break;
4609 default:
4610 /* disallow mesh-specific things */
4611 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4612 return -EINVAL;
4613 if (params->local_pm)
4614 return -EINVAL;
4615 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4616 return -EINVAL;
4617 }
4618
4619 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4620 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4621 /* TDLS can't be set, ... */
4622 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4623 return -EINVAL;
4624 /*
4625 * ... but don't bother the driver with it. This works around
4626 * a hostapd/wpa_supplicant issue -- it always includes the
4627 * TLDS_PEER flag in the mask even for AP mode.
4628 */
4629 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4630 }
4631
4632 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4633 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4634 /* reject other things that can't change */
4635 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4636 return -EINVAL;
4637 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4638 return -EINVAL;
4639 if (params->supported_rates)
4640 return -EINVAL;
4641 if (params->ext_capab || params->ht_capa || params->vht_capa)
4642 return -EINVAL;
4643 }
4644
4645 if (statype != CFG80211_STA_AP_CLIENT &&
4646 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4647 if (params->vlan)
4648 return -EINVAL;
4649 }
4650
4651 switch (statype) {
4652 case CFG80211_STA_AP_MLME_CLIENT:
4653 /* Use this only for authorizing/unauthorizing a station */
4654 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4655 return -EOPNOTSUPP;
4656 break;
4657 case CFG80211_STA_AP_CLIENT:
4658 case CFG80211_STA_AP_CLIENT_UNASSOC:
4659 /* accept only the listed bits */
4660 if (params->sta_flags_mask &
4661 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4662 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4663 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4664 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4665 BIT(NL80211_STA_FLAG_WME) |
4666 BIT(NL80211_STA_FLAG_MFP)))
4667 return -EINVAL;
4668
4669 /* but authenticated/associated only if driver handles it */
4670 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4671 params->sta_flags_mask &
4672 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4673 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4674 return -EINVAL;
4675 break;
4676 case CFG80211_STA_IBSS:
4677 case CFG80211_STA_AP_STA:
4678 /* reject any changes other than AUTHORIZED */
4679 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4680 return -EINVAL;
4681 break;
4682 case CFG80211_STA_TDLS_PEER_SETUP:
4683 /* reject any changes other than AUTHORIZED or WME */
4684 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4685 BIT(NL80211_STA_FLAG_WME)))
4686 return -EINVAL;
4687 /* force (at least) rates when authorizing */
4688 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4689 !params->supported_rates)
4690 return -EINVAL;
4691 break;
4692 case CFG80211_STA_TDLS_PEER_ACTIVE:
4693 /* reject any changes */
4694 return -EINVAL;
4695 case CFG80211_STA_MESH_PEER_KERNEL:
4696 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4697 return -EINVAL;
4698 break;
4699 case CFG80211_STA_MESH_PEER_USER:
4700 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4701 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4702 return -EINVAL;
4703 break;
4704 }
4705
4706 /*
4707 * Older kernel versions ignored this attribute entirely, so don't
4708 * reject attempts to update it but mark it as unused instead so the
4709 * driver won't look at the data.
4710 */
4711 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4712 statype != CFG80211_STA_TDLS_PEER_SETUP)
4713 params->opmode_notif_used = false;
4714
4715 return 0;
4716 }
4717 EXPORT_SYMBOL(cfg80211_check_station_change);
4718
4719 /*
4720 * Get vlan interface making sure it is running and on the right wiphy.
4721 */
4722 static struct net_device *get_vlan(struct genl_info *info,
4723 struct cfg80211_registered_device *rdev)
4724 {
4725 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4726 struct net_device *v;
4727 int ret;
4728
4729 if (!vlanattr)
4730 return NULL;
4731
4732 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4733 if (!v)
4734 return ERR_PTR(-ENODEV);
4735
4736 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4737 ret = -EINVAL;
4738 goto error;
4739 }
4740
4741 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4742 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4743 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4744 ret = -EINVAL;
4745 goto error;
4746 }
4747
4748 if (!netif_running(v)) {
4749 ret = -ENETDOWN;
4750 goto error;
4751 }
4752
4753 return v;
4754 error:
4755 dev_put(v);
4756 return ERR_PTR(ret);
4757 }
4758
4759 static const struct nla_policy
4760 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4761 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4762 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4763 };
4764
4765 static int nl80211_parse_sta_wme(struct genl_info *info,
4766 struct station_parameters *params)
4767 {
4768 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4769 struct nlattr *nla;
4770 int err;
4771
4772 /* parse WME attributes if present */
4773 if (!info->attrs[NL80211_ATTR_STA_WME])
4774 return 0;
4775
4776 nla = info->attrs[NL80211_ATTR_STA_WME];
4777 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4778 nl80211_sta_wme_policy, info->extack);
4779 if (err)
4780 return err;
4781
4782 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4783 params->uapsd_queues = nla_get_u8(
4784 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4785 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4786 return -EINVAL;
4787
4788 if (tb[NL80211_STA_WME_MAX_SP])
4789 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4790
4791 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4792 return -EINVAL;
4793
4794 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4795
4796 return 0;
4797 }
4798
4799 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4800 struct station_parameters *params)
4801 {
4802 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4803 params->supported_channels =
4804 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4805 params->supported_channels_len =
4806 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4807 /*
4808 * Need to include at least one (first channel, number of
4809 * channels) tuple for each subband, and must have proper
4810 * tuples for the rest of the data as well.
4811 */
4812 if (params->supported_channels_len < 2)
4813 return -EINVAL;
4814 if (params->supported_channels_len % 2)
4815 return -EINVAL;
4816 }
4817
4818 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4819 params->supported_oper_classes =
4820 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4821 params->supported_oper_classes_len =
4822 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4823 /*
4824 * The value of the Length field of the Supported Operating
4825 * Classes element is between 2 and 253.
4826 */
4827 if (params->supported_oper_classes_len < 2 ||
4828 params->supported_oper_classes_len > 253)
4829 return -EINVAL;
4830 }
4831 return 0;
4832 }
4833
4834 static int nl80211_set_station_tdls(struct genl_info *info,
4835 struct station_parameters *params)
4836 {
4837 int err;
4838 /* Dummy STA entry gets updated once the peer capabilities are known */
4839 if (info->attrs[NL80211_ATTR_PEER_AID])
4840 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4841 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4842 params->ht_capa =
4843 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4844 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4845 params->vht_capa =
4846 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4847
4848 err = nl80211_parse_sta_channel_info(info, params);
4849 if (err)
4850 return err;
4851
4852 return nl80211_parse_sta_wme(info, params);
4853 }
4854
4855 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4856 {
4857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4858 struct net_device *dev = info->user_ptr[1];
4859 struct station_parameters params;
4860 u8 *mac_addr;
4861 int err;
4862
4863 memset(&params, 0, sizeof(params));
4864
4865 if (!rdev->ops->change_station)
4866 return -EOPNOTSUPP;
4867
4868 /*
4869 * AID and listen_interval properties can be set only for unassociated
4870 * station. Include these parameters here and will check them in
4871 * cfg80211_check_station_change().
4872 */
4873 if (info->attrs[NL80211_ATTR_STA_AID])
4874 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4875
4876 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4877 params.listen_interval =
4878 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4879 else
4880 params.listen_interval = -1;
4881
4882 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4883 u8 tmp;
4884
4885 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4886 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4887 return -EINVAL;
4888
4889 params.support_p2p_ps = tmp;
4890 } else {
4891 params.support_p2p_ps = -1;
4892 }
4893
4894 if (!info->attrs[NL80211_ATTR_MAC])
4895 return -EINVAL;
4896
4897 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4898
4899 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4900 params.supported_rates =
4901 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4902 params.supported_rates_len =
4903 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4904 }
4905
4906 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4907 params.capability =
4908 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4909 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4910 }
4911
4912 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4913 params.ext_capab =
4914 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4915 params.ext_capab_len =
4916 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4917 }
4918
4919 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4920 return -EINVAL;
4921
4922 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4923 params.plink_action =
4924 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4925 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4926 return -EINVAL;
4927 }
4928
4929 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4930 params.plink_state =
4931 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4932 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4933 return -EINVAL;
4934 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4935 params.peer_aid = nla_get_u16(
4936 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4937 if (params.peer_aid > IEEE80211_MAX_AID)
4938 return -EINVAL;
4939 }
4940 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4941 }
4942
4943 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4944 enum nl80211_mesh_power_mode pm = nla_get_u32(
4945 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4946
4947 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4948 pm > NL80211_MESH_POWER_MAX)
4949 return -EINVAL;
4950
4951 params.local_pm = pm;
4952 }
4953
4954 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4955 params.opmode_notif_used = true;
4956 params.opmode_notif =
4957 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4958 }
4959
4960 /* Include parameters for TDLS peer (will check later) */
4961 err = nl80211_set_station_tdls(info, &params);
4962 if (err)
4963 return err;
4964
4965 params.vlan = get_vlan(info, rdev);
4966 if (IS_ERR(params.vlan))
4967 return PTR_ERR(params.vlan);
4968
4969 switch (dev->ieee80211_ptr->iftype) {
4970 case NL80211_IFTYPE_AP:
4971 case NL80211_IFTYPE_AP_VLAN:
4972 case NL80211_IFTYPE_P2P_GO:
4973 case NL80211_IFTYPE_P2P_CLIENT:
4974 case NL80211_IFTYPE_STATION:
4975 case NL80211_IFTYPE_ADHOC:
4976 case NL80211_IFTYPE_MESH_POINT:
4977 break;
4978 default:
4979 err = -EOPNOTSUPP;
4980 goto out_put_vlan;
4981 }
4982
4983 /* driver will call cfg80211_check_station_change() */
4984 err = rdev_change_station(rdev, dev, mac_addr, &params);
4985
4986 out_put_vlan:
4987 if (params.vlan)
4988 dev_put(params.vlan);
4989
4990 return err;
4991 }
4992
4993 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4994 {
4995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4996 int err;
4997 struct net_device *dev = info->user_ptr[1];
4998 struct station_parameters params;
4999 u8 *mac_addr = NULL;
5000 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5001 BIT(NL80211_STA_FLAG_ASSOCIATED);
5002
5003 memset(&params, 0, sizeof(params));
5004
5005 if (!rdev->ops->add_station)
5006 return -EOPNOTSUPP;
5007
5008 if (!info->attrs[NL80211_ATTR_MAC])
5009 return -EINVAL;
5010
5011 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5012 return -EINVAL;
5013
5014 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5015 return -EINVAL;
5016
5017 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5018 !info->attrs[NL80211_ATTR_PEER_AID])
5019 return -EINVAL;
5020
5021 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5022 params.supported_rates =
5023 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5024 params.supported_rates_len =
5025 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5026 params.listen_interval =
5027 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5028
5029 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5030 u8 tmp;
5031
5032 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5033 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5034 return -EINVAL;
5035
5036 params.support_p2p_ps = tmp;
5037 } else {
5038 /*
5039 * if not specified, assume it's supported for P2P GO interface,
5040 * and is NOT supported for AP interface
5041 */
5042 params.support_p2p_ps =
5043 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5044 }
5045
5046 if (info->attrs[NL80211_ATTR_PEER_AID])
5047 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5048 else
5049 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5050 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5051 return -EINVAL;
5052
5053 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5054 params.capability =
5055 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5056 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5057 }
5058
5059 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5060 params.ext_capab =
5061 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5062 params.ext_capab_len =
5063 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5064 }
5065
5066 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5067 params.ht_capa =
5068 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5069
5070 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5071 params.vht_capa =
5072 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5073
5074 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5075 params.opmode_notif_used = true;
5076 params.opmode_notif =
5077 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5078 }
5079
5080 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5081 params.plink_action =
5082 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5083 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5084 return -EINVAL;
5085 }
5086
5087 err = nl80211_parse_sta_channel_info(info, &params);
5088 if (err)
5089 return err;
5090
5091 err = nl80211_parse_sta_wme(info, &params);
5092 if (err)
5093 return err;
5094
5095 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5096 return -EINVAL;
5097
5098 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5099 * as userspace might just pass through the capabilities from the IEs
5100 * directly, rather than enforcing this restriction and returning an
5101 * error in this case.
5102 */
5103 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5104 params.ht_capa = NULL;
5105 params.vht_capa = NULL;
5106 }
5107
5108 /* When you run into this, adjust the code below for the new flag */
5109 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5110
5111 switch (dev->ieee80211_ptr->iftype) {
5112 case NL80211_IFTYPE_AP:
5113 case NL80211_IFTYPE_AP_VLAN:
5114 case NL80211_IFTYPE_P2P_GO:
5115 /* ignore WME attributes if iface/sta is not capable */
5116 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5117 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5118 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5119
5120 /* TDLS peers cannot be added */
5121 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5122 info->attrs[NL80211_ATTR_PEER_AID])
5123 return -EINVAL;
5124 /* but don't bother the driver with it */
5125 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5126
5127 /* allow authenticated/associated only if driver handles it */
5128 if (!(rdev->wiphy.features &
5129 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5130 params.sta_flags_mask & auth_assoc)
5131 return -EINVAL;
5132
5133 /* Older userspace, or userspace wanting to be compatible with
5134 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5135 * and assoc flags in the mask, but assumes the station will be
5136 * added as associated anyway since this was the required driver
5137 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5138 * introduced.
5139 * In order to not bother drivers with this quirk in the API
5140 * set the flags in both the mask and set for new stations in
5141 * this case.
5142 */
5143 if (!(params.sta_flags_mask & auth_assoc)) {
5144 params.sta_flags_mask |= auth_assoc;
5145 params.sta_flags_set |= auth_assoc;
5146 }
5147
5148 /* must be last in here for error handling */
5149 params.vlan = get_vlan(info, rdev);
5150 if (IS_ERR(params.vlan))
5151 return PTR_ERR(params.vlan);
5152 break;
5153 case NL80211_IFTYPE_MESH_POINT:
5154 /* ignore uAPSD data */
5155 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5156
5157 /* associated is disallowed */
5158 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5159 return -EINVAL;
5160 /* TDLS peers cannot be added */
5161 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5162 info->attrs[NL80211_ATTR_PEER_AID])
5163 return -EINVAL;
5164 break;
5165 case NL80211_IFTYPE_STATION:
5166 case NL80211_IFTYPE_P2P_CLIENT:
5167 /* ignore uAPSD data */
5168 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5169
5170 /* these are disallowed */
5171 if (params.sta_flags_mask &
5172 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5173 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5174 return -EINVAL;
5175 /* Only TDLS peers can be added */
5176 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5177 return -EINVAL;
5178 /* Can only add if TDLS ... */
5179 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5180 return -EOPNOTSUPP;
5181 /* ... with external setup is supported */
5182 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5183 return -EOPNOTSUPP;
5184 /*
5185 * Older wpa_supplicant versions always mark the TDLS peer
5186 * as authorized, but it shouldn't yet be.
5187 */
5188 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5189 break;
5190 default:
5191 return -EOPNOTSUPP;
5192 }
5193
5194 /* be aware of params.vlan when changing code here */
5195
5196 err = rdev_add_station(rdev, dev, mac_addr, &params);
5197
5198 if (params.vlan)
5199 dev_put(params.vlan);
5200 return err;
5201 }
5202
5203 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5204 {
5205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5206 struct net_device *dev = info->user_ptr[1];
5207 struct station_del_parameters params;
5208
5209 memset(&params, 0, sizeof(params));
5210
5211 if (info->attrs[NL80211_ATTR_MAC])
5212 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5213
5214 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5215 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5216 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5217 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5218 return -EINVAL;
5219
5220 if (!rdev->ops->del_station)
5221 return -EOPNOTSUPP;
5222
5223 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5224 params.subtype =
5225 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5226 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5227 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5228 return -EINVAL;
5229 } else {
5230 /* Default to Deauthentication frame */
5231 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5232 }
5233
5234 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5235 params.reason_code =
5236 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5237 if (params.reason_code == 0)
5238 return -EINVAL; /* 0 is reserved */
5239 } else {
5240 /* Default to reason code 2 */
5241 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5242 }
5243
5244 return rdev_del_station(rdev, dev, &params);
5245 }
5246
5247 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5248 int flags, struct net_device *dev,
5249 u8 *dst, u8 *next_hop,
5250 struct mpath_info *pinfo)
5251 {
5252 void *hdr;
5253 struct nlattr *pinfoattr;
5254
5255 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5256 if (!hdr)
5257 return -1;
5258
5259 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5260 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5261 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5262 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5263 goto nla_put_failure;
5264
5265 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5266 if (!pinfoattr)
5267 goto nla_put_failure;
5268 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5269 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5270 pinfo->frame_qlen))
5271 goto nla_put_failure;
5272 if (((pinfo->filled & MPATH_INFO_SN) &&
5273 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5274 ((pinfo->filled & MPATH_INFO_METRIC) &&
5275 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5276 pinfo->metric)) ||
5277 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5278 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5279 pinfo->exptime)) ||
5280 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5281 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5282 pinfo->flags)) ||
5283 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5284 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5285 pinfo->discovery_timeout)) ||
5286 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5287 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5288 pinfo->discovery_retries)))
5289 goto nla_put_failure;
5290
5291 nla_nest_end(msg, pinfoattr);
5292
5293 genlmsg_end(msg, hdr);
5294 return 0;
5295
5296 nla_put_failure:
5297 genlmsg_cancel(msg, hdr);
5298 return -EMSGSIZE;
5299 }
5300
5301 static int nl80211_dump_mpath(struct sk_buff *skb,
5302 struct netlink_callback *cb)
5303 {
5304 struct mpath_info pinfo;
5305 struct cfg80211_registered_device *rdev;
5306 struct wireless_dev *wdev;
5307 u8 dst[ETH_ALEN];
5308 u8 next_hop[ETH_ALEN];
5309 int path_idx = cb->args[2];
5310 int err;
5311
5312 rtnl_lock();
5313 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5314 if (err)
5315 goto out_err;
5316
5317 if (!rdev->ops->dump_mpath) {
5318 err = -EOPNOTSUPP;
5319 goto out_err;
5320 }
5321
5322 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5323 err = -EOPNOTSUPP;
5324 goto out_err;
5325 }
5326
5327 while (1) {
5328 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5329 next_hop, &pinfo);
5330 if (err == -ENOENT)
5331 break;
5332 if (err)
5333 goto out_err;
5334
5335 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5336 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5337 wdev->netdev, dst, next_hop,
5338 &pinfo) < 0)
5339 goto out;
5340
5341 path_idx++;
5342 }
5343
5344 out:
5345 cb->args[2] = path_idx;
5346 err = skb->len;
5347 out_err:
5348 rtnl_unlock();
5349 return err;
5350 }
5351
5352 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5353 {
5354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5355 int err;
5356 struct net_device *dev = info->user_ptr[1];
5357 struct mpath_info pinfo;
5358 struct sk_buff *msg;
5359 u8 *dst = NULL;
5360 u8 next_hop[ETH_ALEN];
5361
5362 memset(&pinfo, 0, sizeof(pinfo));
5363
5364 if (!info->attrs[NL80211_ATTR_MAC])
5365 return -EINVAL;
5366
5367 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5368
5369 if (!rdev->ops->get_mpath)
5370 return -EOPNOTSUPP;
5371
5372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5373 return -EOPNOTSUPP;
5374
5375 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5376 if (err)
5377 return err;
5378
5379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5380 if (!msg)
5381 return -ENOMEM;
5382
5383 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5384 dev, dst, next_hop, &pinfo) < 0) {
5385 nlmsg_free(msg);
5386 return -ENOBUFS;
5387 }
5388
5389 return genlmsg_reply(msg, info);
5390 }
5391
5392 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5393 {
5394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5395 struct net_device *dev = info->user_ptr[1];
5396 u8 *dst = NULL;
5397 u8 *next_hop = NULL;
5398
5399 if (!info->attrs[NL80211_ATTR_MAC])
5400 return -EINVAL;
5401
5402 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5403 return -EINVAL;
5404
5405 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5406 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5407
5408 if (!rdev->ops->change_mpath)
5409 return -EOPNOTSUPP;
5410
5411 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5412 return -EOPNOTSUPP;
5413
5414 return rdev_change_mpath(rdev, dev, dst, next_hop);
5415 }
5416
5417 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5418 {
5419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5420 struct net_device *dev = info->user_ptr[1];
5421 u8 *dst = NULL;
5422 u8 *next_hop = NULL;
5423
5424 if (!info->attrs[NL80211_ATTR_MAC])
5425 return -EINVAL;
5426
5427 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5428 return -EINVAL;
5429
5430 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5431 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5432
5433 if (!rdev->ops->add_mpath)
5434 return -EOPNOTSUPP;
5435
5436 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5437 return -EOPNOTSUPP;
5438
5439 return rdev_add_mpath(rdev, dev, dst, next_hop);
5440 }
5441
5442 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5443 {
5444 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5445 struct net_device *dev = info->user_ptr[1];
5446 u8 *dst = NULL;
5447
5448 if (info->attrs[NL80211_ATTR_MAC])
5449 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5450
5451 if (!rdev->ops->del_mpath)
5452 return -EOPNOTSUPP;
5453
5454 return rdev_del_mpath(rdev, dev, dst);
5455 }
5456
5457 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5458 {
5459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5460 int err;
5461 struct net_device *dev = info->user_ptr[1];
5462 struct mpath_info pinfo;
5463 struct sk_buff *msg;
5464 u8 *dst = NULL;
5465 u8 mpp[ETH_ALEN];
5466
5467 memset(&pinfo, 0, sizeof(pinfo));
5468
5469 if (!info->attrs[NL80211_ATTR_MAC])
5470 return -EINVAL;
5471
5472 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5473
5474 if (!rdev->ops->get_mpp)
5475 return -EOPNOTSUPP;
5476
5477 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5478 return -EOPNOTSUPP;
5479
5480 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5481 if (err)
5482 return err;
5483
5484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5485 if (!msg)
5486 return -ENOMEM;
5487
5488 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5489 dev, dst, mpp, &pinfo) < 0) {
5490 nlmsg_free(msg);
5491 return -ENOBUFS;
5492 }
5493
5494 return genlmsg_reply(msg, info);
5495 }
5496
5497 static int nl80211_dump_mpp(struct sk_buff *skb,
5498 struct netlink_callback *cb)
5499 {
5500 struct mpath_info pinfo;
5501 struct cfg80211_registered_device *rdev;
5502 struct wireless_dev *wdev;
5503 u8 dst[ETH_ALEN];
5504 u8 mpp[ETH_ALEN];
5505 int path_idx = cb->args[2];
5506 int err;
5507
5508 rtnl_lock();
5509 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5510 if (err)
5511 goto out_err;
5512
5513 if (!rdev->ops->dump_mpp) {
5514 err = -EOPNOTSUPP;
5515 goto out_err;
5516 }
5517
5518 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5519 err = -EOPNOTSUPP;
5520 goto out_err;
5521 }
5522
5523 while (1) {
5524 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5525 mpp, &pinfo);
5526 if (err == -ENOENT)
5527 break;
5528 if (err)
5529 goto out_err;
5530
5531 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5532 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5533 wdev->netdev, dst, mpp,
5534 &pinfo) < 0)
5535 goto out;
5536
5537 path_idx++;
5538 }
5539
5540 out:
5541 cb->args[2] = path_idx;
5542 err = skb->len;
5543 out_err:
5544 rtnl_unlock();
5545 return err;
5546 }
5547
5548 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5549 {
5550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5551 struct net_device *dev = info->user_ptr[1];
5552 struct wireless_dev *wdev = dev->ieee80211_ptr;
5553 struct bss_parameters params;
5554 int err;
5555
5556 memset(&params, 0, sizeof(params));
5557 /* default to not changing parameters */
5558 params.use_cts_prot = -1;
5559 params.use_short_preamble = -1;
5560 params.use_short_slot_time = -1;
5561 params.ap_isolate = -1;
5562 params.ht_opmode = -1;
5563 params.p2p_ctwindow = -1;
5564 params.p2p_opp_ps = -1;
5565
5566 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5567 params.use_cts_prot =
5568 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5569 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5570 params.use_short_preamble =
5571 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5572 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5573 params.use_short_slot_time =
5574 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5575 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5576 params.basic_rates =
5577 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5578 params.basic_rates_len =
5579 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5580 }
5581 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5582 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5583 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5584 params.ht_opmode =
5585 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5586
5587 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5588 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5589 return -EINVAL;
5590 params.p2p_ctwindow =
5591 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5592 if (params.p2p_ctwindow < 0)
5593 return -EINVAL;
5594 if (params.p2p_ctwindow != 0 &&
5595 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5596 return -EINVAL;
5597 }
5598
5599 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5600 u8 tmp;
5601
5602 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5603 return -EINVAL;
5604 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5605 if (tmp > 1)
5606 return -EINVAL;
5607 params.p2p_opp_ps = tmp;
5608 if (params.p2p_opp_ps &&
5609 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5610 return -EINVAL;
5611 }
5612
5613 if (!rdev->ops->change_bss)
5614 return -EOPNOTSUPP;
5615
5616 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5617 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5618 return -EOPNOTSUPP;
5619
5620 wdev_lock(wdev);
5621 err = rdev_change_bss(rdev, dev, &params);
5622 wdev_unlock(wdev);
5623
5624 return err;
5625 }
5626
5627 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5628 {
5629 char *data = NULL;
5630 bool is_indoor;
5631 enum nl80211_user_reg_hint_type user_reg_hint_type;
5632 u32 owner_nlportid;
5633
5634 /*
5635 * You should only get this when cfg80211 hasn't yet initialized
5636 * completely when built-in to the kernel right between the time
5637 * window between nl80211_init() and regulatory_init(), if that is
5638 * even possible.
5639 */
5640 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5641 return -EINPROGRESS;
5642
5643 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5644 user_reg_hint_type =
5645 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5646 else
5647 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5648
5649 switch (user_reg_hint_type) {
5650 case NL80211_USER_REG_HINT_USER:
5651 case NL80211_USER_REG_HINT_CELL_BASE:
5652 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5653 return -EINVAL;
5654
5655 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5656 return regulatory_hint_user(data, user_reg_hint_type);
5657 case NL80211_USER_REG_HINT_INDOOR:
5658 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5659 owner_nlportid = info->snd_portid;
5660 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5661 } else {
5662 owner_nlportid = 0;
5663 is_indoor = true;
5664 }
5665
5666 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5667 default:
5668 return -EINVAL;
5669 }
5670 }
5671
5672 static int nl80211_get_mesh_config(struct sk_buff *skb,
5673 struct genl_info *info)
5674 {
5675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5676 struct net_device *dev = info->user_ptr[1];
5677 struct wireless_dev *wdev = dev->ieee80211_ptr;
5678 struct mesh_config cur_params;
5679 int err = 0;
5680 void *hdr;
5681 struct nlattr *pinfoattr;
5682 struct sk_buff *msg;
5683
5684 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5685 return -EOPNOTSUPP;
5686
5687 if (!rdev->ops->get_mesh_config)
5688 return -EOPNOTSUPP;
5689
5690 wdev_lock(wdev);
5691 /* If not connected, get default parameters */
5692 if (!wdev->mesh_id_len)
5693 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5694 else
5695 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5696 wdev_unlock(wdev);
5697
5698 if (err)
5699 return err;
5700
5701 /* Draw up a netlink message to send back */
5702 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5703 if (!msg)
5704 return -ENOMEM;
5705 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5706 NL80211_CMD_GET_MESH_CONFIG);
5707 if (!hdr)
5708 goto out;
5709 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5710 if (!pinfoattr)
5711 goto nla_put_failure;
5712 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5713 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5714 cur_params.dot11MeshRetryTimeout) ||
5715 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5716 cur_params.dot11MeshConfirmTimeout) ||
5717 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5718 cur_params.dot11MeshHoldingTimeout) ||
5719 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5720 cur_params.dot11MeshMaxPeerLinks) ||
5721 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5722 cur_params.dot11MeshMaxRetries) ||
5723 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5724 cur_params.dot11MeshTTL) ||
5725 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5726 cur_params.element_ttl) ||
5727 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5728 cur_params.auto_open_plinks) ||
5729 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5730 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5731 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5732 cur_params.dot11MeshHWMPmaxPREQretries) ||
5733 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5734 cur_params.path_refresh_time) ||
5735 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5736 cur_params.min_discovery_timeout) ||
5737 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5738 cur_params.dot11MeshHWMPactivePathTimeout) ||
5739 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5740 cur_params.dot11MeshHWMPpreqMinInterval) ||
5741 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5742 cur_params.dot11MeshHWMPperrMinInterval) ||
5743 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5744 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5745 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5746 cur_params.dot11MeshHWMPRootMode) ||
5747 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5748 cur_params.dot11MeshHWMPRannInterval) ||
5749 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5750 cur_params.dot11MeshGateAnnouncementProtocol) ||
5751 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5752 cur_params.dot11MeshForwarding) ||
5753 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5754 cur_params.rssi_threshold) ||
5755 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5756 cur_params.ht_opmode) ||
5757 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5758 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5759 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5760 cur_params.dot11MeshHWMProotInterval) ||
5761 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5762 cur_params.dot11MeshHWMPconfirmationInterval) ||
5763 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5764 cur_params.power_mode) ||
5765 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5766 cur_params.dot11MeshAwakeWindowDuration) ||
5767 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5768 cur_params.plink_timeout))
5769 goto nla_put_failure;
5770 nla_nest_end(msg, pinfoattr);
5771 genlmsg_end(msg, hdr);
5772 return genlmsg_reply(msg, info);
5773
5774 nla_put_failure:
5775 genlmsg_cancel(msg, hdr);
5776 out:
5777 nlmsg_free(msg);
5778 return -ENOBUFS;
5779 }
5780
5781 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5782 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5783 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5784 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5785 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5786 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5787 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5788 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5789 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5790 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5791 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5792 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5793 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5794 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5795 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5796 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5797 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5798 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5799 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5800 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5801 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5802 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5803 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5804 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5805 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5806 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5807 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5808 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5809 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5810 };
5811
5812 static const struct nla_policy
5813 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5814 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5815 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5816 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5817 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5818 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5819 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5820 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5821 .len = IEEE80211_MAX_DATA_LEN },
5822 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5823 };
5824
5825 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5826 {
5827 u8 val = nla_get_u8(nla);
5828 if (val < min || val > max)
5829 return -EINVAL;
5830 *out = val;
5831 return 0;
5832 }
5833
5834 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5835 {
5836 u8 val = nla_get_u8(nla);
5837 if (val < min || val > max)
5838 return -EINVAL;
5839 *out = val;
5840 return 0;
5841 }
5842
5843 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5844 {
5845 u16 val = nla_get_u16(nla);
5846 if (val < min || val > max)
5847 return -EINVAL;
5848 *out = val;
5849 return 0;
5850 }
5851
5852 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5853 {
5854 u32 val = nla_get_u32(nla);
5855 if (val < min || val > max)
5856 return -EINVAL;
5857 *out = val;
5858 return 0;
5859 }
5860
5861 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5862 {
5863 s32 val = nla_get_s32(nla);
5864 if (val < min || val > max)
5865 return -EINVAL;
5866 *out = val;
5867 return 0;
5868 }
5869
5870 static int nl80211_check_power_mode(const struct nlattr *nla,
5871 enum nl80211_mesh_power_mode min,
5872 enum nl80211_mesh_power_mode max,
5873 enum nl80211_mesh_power_mode *out)
5874 {
5875 u32 val = nla_get_u32(nla);
5876 if (val < min || val > max)
5877 return -EINVAL;
5878 *out = val;
5879 return 0;
5880 }
5881
5882 static int nl80211_parse_mesh_config(struct genl_info *info,
5883 struct mesh_config *cfg,
5884 u32 *mask_out)
5885 {
5886 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5887 u32 mask = 0;
5888 u16 ht_opmode;
5889
5890 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5891 do { \
5892 if (tb[attr]) { \
5893 if (fn(tb[attr], min, max, &cfg->param)) \
5894 return -EINVAL; \
5895 mask |= (1 << (attr - 1)); \
5896 } \
5897 } while (0)
5898
5899 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5900 return -EINVAL;
5901 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5902 info->attrs[NL80211_ATTR_MESH_CONFIG],
5903 nl80211_meshconf_params_policy, info->extack))
5904 return -EINVAL;
5905
5906 /* This makes sure that there aren't more than 32 mesh config
5907 * parameters (otherwise our bitfield scheme would not work.) */
5908 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5909
5910 /* Fill in the params struct */
5911 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5912 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5913 nl80211_check_u16);
5914 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5915 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5916 nl80211_check_u16);
5917 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5918 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5919 nl80211_check_u16);
5920 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5921 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5922 nl80211_check_u16);
5923 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5924 mask, NL80211_MESHCONF_MAX_RETRIES,
5925 nl80211_check_u8);
5926 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5927 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5928 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5929 mask, NL80211_MESHCONF_ELEMENT_TTL,
5930 nl80211_check_u8);
5931 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5932 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5933 nl80211_check_bool);
5934 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5935 1, 255, mask,
5936 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5937 nl80211_check_u32);
5938 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5939 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5940 nl80211_check_u8);
5941 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5942 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5943 nl80211_check_u32);
5944 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5945 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5946 nl80211_check_u16);
5947 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5948 1, 65535, mask,
5949 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5950 nl80211_check_u32);
5951 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5952 1, 65535, mask,
5953 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5954 nl80211_check_u16);
5955 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5956 1, 65535, mask,
5957 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5958 nl80211_check_u16);
5959 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5960 dot11MeshHWMPnetDiameterTraversalTime,
5961 1, 65535, mask,
5962 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5963 nl80211_check_u16);
5964 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5965 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5966 nl80211_check_u8);
5967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5968 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5969 nl80211_check_u16);
5970 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5971 dot11MeshGateAnnouncementProtocol, 0, 1,
5972 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5973 nl80211_check_bool);
5974 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5975 mask, NL80211_MESHCONF_FORWARDING,
5976 nl80211_check_bool);
5977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5978 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5979 nl80211_check_s32);
5980 /*
5981 * Check HT operation mode based on
5982 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5983 */
5984 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5985 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5986
5987 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5988 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5989 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5990 return -EINVAL;
5991
5992 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5993 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5994 return -EINVAL;
5995
5996 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5997 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5998 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5999 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6000 return -EINVAL;
6001 break;
6002 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6003 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6004 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6005 return -EINVAL;
6006 break;
6007 }
6008 cfg->ht_opmode = ht_opmode;
6009 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6010 }
6011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6012 1, 65535, mask,
6013 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6014 nl80211_check_u32);
6015 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6016 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6017 nl80211_check_u16);
6018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6019 dot11MeshHWMPconfirmationInterval,
6020 1, 65535, mask,
6021 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6022 nl80211_check_u16);
6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6024 NL80211_MESH_POWER_ACTIVE,
6025 NL80211_MESH_POWER_MAX,
6026 mask, NL80211_MESHCONF_POWER_MODE,
6027 nl80211_check_power_mode);
6028 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6029 0, 65535, mask,
6030 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6032 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6033 nl80211_check_u32);
6034 if (mask_out)
6035 *mask_out = mask;
6036
6037 return 0;
6038
6039 #undef FILL_IN_MESH_PARAM_IF_SET
6040 }
6041
6042 static int nl80211_parse_mesh_setup(struct genl_info *info,
6043 struct mesh_setup *setup)
6044 {
6045 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6046 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6047
6048 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6049 return -EINVAL;
6050 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6051 info->attrs[NL80211_ATTR_MESH_SETUP],
6052 nl80211_mesh_setup_params_policy, info->extack))
6053 return -EINVAL;
6054
6055 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6056 setup->sync_method =
6057 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6058 IEEE80211_SYNC_METHOD_VENDOR :
6059 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6060
6061 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6062 setup->path_sel_proto =
6063 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6064 IEEE80211_PATH_PROTOCOL_VENDOR :
6065 IEEE80211_PATH_PROTOCOL_HWMP;
6066
6067 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6068 setup->path_metric =
6069 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6070 IEEE80211_PATH_METRIC_VENDOR :
6071 IEEE80211_PATH_METRIC_AIRTIME;
6072
6073 if (tb[NL80211_MESH_SETUP_IE]) {
6074 struct nlattr *ieattr =
6075 tb[NL80211_MESH_SETUP_IE];
6076 if (!is_valid_ie_attr(ieattr))
6077 return -EINVAL;
6078 setup->ie = nla_data(ieattr);
6079 setup->ie_len = nla_len(ieattr);
6080 }
6081 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6082 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6083 return -EINVAL;
6084 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6085 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6086 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6087 if (setup->is_secure)
6088 setup->user_mpm = true;
6089
6090 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6091 if (!setup->user_mpm)
6092 return -EINVAL;
6093 setup->auth_id =
6094 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6095 }
6096
6097 return 0;
6098 }
6099
6100 static int nl80211_update_mesh_config(struct sk_buff *skb,
6101 struct genl_info *info)
6102 {
6103 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6104 struct net_device *dev = info->user_ptr[1];
6105 struct wireless_dev *wdev = dev->ieee80211_ptr;
6106 struct mesh_config cfg;
6107 u32 mask;
6108 int err;
6109
6110 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6111 return -EOPNOTSUPP;
6112
6113 if (!rdev->ops->update_mesh_config)
6114 return -EOPNOTSUPP;
6115
6116 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6117 if (err)
6118 return err;
6119
6120 wdev_lock(wdev);
6121 if (!wdev->mesh_id_len)
6122 err = -ENOLINK;
6123
6124 if (!err)
6125 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6126
6127 wdev_unlock(wdev);
6128
6129 return err;
6130 }
6131
6132 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6133 struct sk_buff *msg)
6134 {
6135 struct nlattr *nl_reg_rules;
6136 unsigned int i;
6137
6138 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6139 (regdom->dfs_region &&
6140 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6141 goto nla_put_failure;
6142
6143 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6144 if (!nl_reg_rules)
6145 goto nla_put_failure;
6146
6147 for (i = 0; i < regdom->n_reg_rules; i++) {
6148 struct nlattr *nl_reg_rule;
6149 const struct ieee80211_reg_rule *reg_rule;
6150 const struct ieee80211_freq_range *freq_range;
6151 const struct ieee80211_power_rule *power_rule;
6152 unsigned int max_bandwidth_khz;
6153
6154 reg_rule = &regdom->reg_rules[i];
6155 freq_range = &reg_rule->freq_range;
6156 power_rule = &reg_rule->power_rule;
6157
6158 nl_reg_rule = nla_nest_start(msg, i);
6159 if (!nl_reg_rule)
6160 goto nla_put_failure;
6161
6162 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6163 if (!max_bandwidth_khz)
6164 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6165 reg_rule);
6166
6167 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6168 reg_rule->flags) ||
6169 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6170 freq_range->start_freq_khz) ||
6171 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6172 freq_range->end_freq_khz) ||
6173 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6174 max_bandwidth_khz) ||
6175 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6176 power_rule->max_antenna_gain) ||
6177 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6178 power_rule->max_eirp) ||
6179 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6180 reg_rule->dfs_cac_ms))
6181 goto nla_put_failure;
6182
6183 nla_nest_end(msg, nl_reg_rule);
6184 }
6185
6186 nla_nest_end(msg, nl_reg_rules);
6187 return 0;
6188
6189 nla_put_failure:
6190 return -EMSGSIZE;
6191 }
6192
6193 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6194 {
6195 const struct ieee80211_regdomain *regdom = NULL;
6196 struct cfg80211_registered_device *rdev;
6197 struct wiphy *wiphy = NULL;
6198 struct sk_buff *msg;
6199 void *hdr;
6200
6201 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6202 if (!msg)
6203 return -ENOBUFS;
6204
6205 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6206 NL80211_CMD_GET_REG);
6207 if (!hdr)
6208 goto put_failure;
6209
6210 if (info->attrs[NL80211_ATTR_WIPHY]) {
6211 bool self_managed;
6212
6213 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6214 if (IS_ERR(rdev)) {
6215 nlmsg_free(msg);
6216 return PTR_ERR(rdev);
6217 }
6218
6219 wiphy = &rdev->wiphy;
6220 self_managed = wiphy->regulatory_flags &
6221 REGULATORY_WIPHY_SELF_MANAGED;
6222 regdom = get_wiphy_regdom(wiphy);
6223
6224 /* a self-managed-reg device must have a private regdom */
6225 if (WARN_ON(!regdom && self_managed)) {
6226 nlmsg_free(msg);
6227 return -EINVAL;
6228 }
6229
6230 if (regdom &&
6231 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6232 goto nla_put_failure;
6233 }
6234
6235 if (!wiphy && reg_last_request_cell_base() &&
6236 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6237 NL80211_USER_REG_HINT_CELL_BASE))
6238 goto nla_put_failure;
6239
6240 rcu_read_lock();
6241
6242 if (!regdom)
6243 regdom = rcu_dereference(cfg80211_regdomain);
6244
6245 if (nl80211_put_regdom(regdom, msg))
6246 goto nla_put_failure_rcu;
6247
6248 rcu_read_unlock();
6249
6250 genlmsg_end(msg, hdr);
6251 return genlmsg_reply(msg, info);
6252
6253 nla_put_failure_rcu:
6254 rcu_read_unlock();
6255 nla_put_failure:
6256 genlmsg_cancel(msg, hdr);
6257 put_failure:
6258 nlmsg_free(msg);
6259 return -EMSGSIZE;
6260 }
6261
6262 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6263 u32 seq, int flags, struct wiphy *wiphy,
6264 const struct ieee80211_regdomain *regdom)
6265 {
6266 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6267 NL80211_CMD_GET_REG);
6268
6269 if (!hdr)
6270 return -1;
6271
6272 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6273
6274 if (nl80211_put_regdom(regdom, msg))
6275 goto nla_put_failure;
6276
6277 if (!wiphy && reg_last_request_cell_base() &&
6278 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6279 NL80211_USER_REG_HINT_CELL_BASE))
6280 goto nla_put_failure;
6281
6282 if (wiphy &&
6283 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6284 goto nla_put_failure;
6285
6286 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6287 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6288 goto nla_put_failure;
6289
6290 genlmsg_end(msg, hdr);
6291 return 0;
6292
6293 nla_put_failure:
6294 genlmsg_cancel(msg, hdr);
6295 return -EMSGSIZE;
6296 }
6297
6298 static int nl80211_get_reg_dump(struct sk_buff *skb,
6299 struct netlink_callback *cb)
6300 {
6301 const struct ieee80211_regdomain *regdom = NULL;
6302 struct cfg80211_registered_device *rdev;
6303 int err, reg_idx, start = cb->args[2];
6304
6305 rtnl_lock();
6306
6307 if (cfg80211_regdomain && start == 0) {
6308 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6309 NLM_F_MULTI, NULL,
6310 rtnl_dereference(cfg80211_regdomain));
6311 if (err < 0)
6312 goto out_err;
6313 }
6314
6315 /* the global regdom is idx 0 */
6316 reg_idx = 1;
6317 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6318 regdom = get_wiphy_regdom(&rdev->wiphy);
6319 if (!regdom)
6320 continue;
6321
6322 if (++reg_idx <= start)
6323 continue;
6324
6325 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6326 NLM_F_MULTI, &rdev->wiphy, regdom);
6327 if (err < 0) {
6328 reg_idx--;
6329 break;
6330 }
6331 }
6332
6333 cb->args[2] = reg_idx;
6334 err = skb->len;
6335 out_err:
6336 rtnl_unlock();
6337 return err;
6338 }
6339
6340 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6341 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6342 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6343 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6344 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6345 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6346 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6347 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6348 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6349 };
6350
6351 static int parse_reg_rule(struct nlattr *tb[],
6352 struct ieee80211_reg_rule *reg_rule)
6353 {
6354 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6355 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6356
6357 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6358 return -EINVAL;
6359 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6360 return -EINVAL;
6361 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6362 return -EINVAL;
6363 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6364 return -EINVAL;
6365 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6366 return -EINVAL;
6367
6368 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6369
6370 freq_range->start_freq_khz =
6371 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6372 freq_range->end_freq_khz =
6373 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6374 freq_range->max_bandwidth_khz =
6375 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6376
6377 power_rule->max_eirp =
6378 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6379
6380 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6381 power_rule->max_antenna_gain =
6382 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6383
6384 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6385 reg_rule->dfs_cac_ms =
6386 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6387
6388 return 0;
6389 }
6390
6391 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6392 {
6393 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6394 struct nlattr *nl_reg_rule;
6395 char *alpha2;
6396 int rem_reg_rules, r;
6397 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6398 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6399 struct ieee80211_regdomain *rd;
6400
6401 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6402 return -EINVAL;
6403
6404 if (!info->attrs[NL80211_ATTR_REG_RULES])
6405 return -EINVAL;
6406
6407 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6408
6409 if (info->attrs[NL80211_ATTR_DFS_REGION])
6410 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6411
6412 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6413 rem_reg_rules) {
6414 num_rules++;
6415 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6416 return -EINVAL;
6417 }
6418
6419 if (!reg_is_valid_request(alpha2))
6420 return -EINVAL;
6421
6422 size_of_regd = sizeof(struct ieee80211_regdomain) +
6423 num_rules * sizeof(struct ieee80211_reg_rule);
6424
6425 rd = kzalloc(size_of_regd, GFP_KERNEL);
6426 if (!rd)
6427 return -ENOMEM;
6428
6429 rd->n_reg_rules = num_rules;
6430 rd->alpha2[0] = alpha2[0];
6431 rd->alpha2[1] = alpha2[1];
6432
6433 /*
6434 * Disable DFS master mode if the DFS region was
6435 * not supported or known on this kernel.
6436 */
6437 if (reg_supported_dfs_region(dfs_region))
6438 rd->dfs_region = dfs_region;
6439
6440 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6441 rem_reg_rules) {
6442 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6443 nl_reg_rule, reg_rule_policy,
6444 info->extack);
6445 if (r)
6446 goto bad_reg;
6447 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6448 if (r)
6449 goto bad_reg;
6450
6451 rule_idx++;
6452
6453 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6454 r = -EINVAL;
6455 goto bad_reg;
6456 }
6457 }
6458
6459 /* set_regdom takes ownership of rd */
6460 return set_regdom(rd, REGD_SOURCE_CRDA);
6461 bad_reg:
6462 kfree(rd);
6463 return r;
6464 }
6465 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6466
6467 static int validate_scan_freqs(struct nlattr *freqs)
6468 {
6469 struct nlattr *attr1, *attr2;
6470 int n_channels = 0, tmp1, tmp2;
6471
6472 nla_for_each_nested(attr1, freqs, tmp1)
6473 if (nla_len(attr1) != sizeof(u32))
6474 return 0;
6475
6476 nla_for_each_nested(attr1, freqs, tmp1) {
6477 n_channels++;
6478 /*
6479 * Some hardware has a limited channel list for
6480 * scanning, and it is pretty much nonsensical
6481 * to scan for a channel twice, so disallow that
6482 * and don't require drivers to check that the
6483 * channel list they get isn't longer than what
6484 * they can scan, as long as they can scan all
6485 * the channels they registered at once.
6486 */
6487 nla_for_each_nested(attr2, freqs, tmp2)
6488 if (attr1 != attr2 &&
6489 nla_get_u32(attr1) == nla_get_u32(attr2))
6490 return 0;
6491 }
6492
6493 return n_channels;
6494 }
6495
6496 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6497 {
6498 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6499 }
6500
6501 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6502 struct cfg80211_bss_selection *bss_select)
6503 {
6504 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6505 struct nlattr *nest;
6506 int err;
6507 bool found = false;
6508 int i;
6509
6510 /* only process one nested attribute */
6511 nest = nla_data(nla);
6512 if (!nla_ok(nest, nla_len(nest)))
6513 return -EINVAL;
6514
6515 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6516 nl80211_bss_select_policy, NULL);
6517 if (err)
6518 return err;
6519
6520 /* only one attribute may be given */
6521 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6522 if (attr[i]) {
6523 if (found)
6524 return -EINVAL;
6525 found = true;
6526 }
6527 }
6528
6529 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6530
6531 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6532 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6533
6534 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6535 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6536 bss_select->param.band_pref =
6537 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6538 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6539 return -EINVAL;
6540 }
6541
6542 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6543 struct nl80211_bss_select_rssi_adjust *adj_param;
6544
6545 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6546 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6547 bss_select->param.adjust.band = adj_param->band;
6548 bss_select->param.adjust.delta = adj_param->delta;
6549 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6550 return -EINVAL;
6551 }
6552
6553 /* user-space did not provide behaviour attribute */
6554 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6555 return -EINVAL;
6556
6557 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6558 return -EINVAL;
6559
6560 return 0;
6561 }
6562
6563 static int nl80211_parse_random_mac(struct nlattr **attrs,
6564 u8 *mac_addr, u8 *mac_addr_mask)
6565 {
6566 int i;
6567
6568 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6569 eth_zero_addr(mac_addr);
6570 eth_zero_addr(mac_addr_mask);
6571 mac_addr[0] = 0x2;
6572 mac_addr_mask[0] = 0x3;
6573
6574 return 0;
6575 }
6576
6577 /* need both or none */
6578 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6579 return -EINVAL;
6580
6581 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6582 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6583
6584 /* don't allow or configure an mcast address */
6585 if (!is_multicast_ether_addr(mac_addr_mask) ||
6586 is_multicast_ether_addr(mac_addr))
6587 return -EINVAL;
6588
6589 /*
6590 * allow users to pass a MAC address that has bits set outside
6591 * of the mask, but don't bother drivers with having to deal
6592 * with such bits
6593 */
6594 for (i = 0; i < ETH_ALEN; i++)
6595 mac_addr[i] &= mac_addr_mask[i];
6596
6597 return 0;
6598 }
6599
6600 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6601 {
6602 ASSERT_WDEV_LOCK(wdev);
6603
6604 if (!cfg80211_beaconing_iface_active(wdev))
6605 return true;
6606
6607 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6608 return true;
6609
6610 return regulatory_pre_cac_allowed(wdev->wiphy);
6611 }
6612
6613 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6614 {
6615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6616 struct wireless_dev *wdev = info->user_ptr[1];
6617 struct cfg80211_scan_request *request;
6618 struct nlattr *attr;
6619 struct wiphy *wiphy;
6620 int err, tmp, n_ssids = 0, n_channels, i;
6621 size_t ie_len;
6622
6623 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6624 return -EINVAL;
6625
6626 wiphy = &rdev->wiphy;
6627
6628 if (wdev->iftype == NL80211_IFTYPE_NAN)
6629 return -EOPNOTSUPP;
6630
6631 if (!rdev->ops->scan)
6632 return -EOPNOTSUPP;
6633
6634 if (rdev->scan_req || rdev->scan_msg) {
6635 err = -EBUSY;
6636 goto unlock;
6637 }
6638
6639 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6640 n_channels = validate_scan_freqs(
6641 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6642 if (!n_channels) {
6643 err = -EINVAL;
6644 goto unlock;
6645 }
6646 } else {
6647 n_channels = ieee80211_get_num_supported_channels(wiphy);
6648 }
6649
6650 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6651 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6652 n_ssids++;
6653
6654 if (n_ssids > wiphy->max_scan_ssids) {
6655 err = -EINVAL;
6656 goto unlock;
6657 }
6658
6659 if (info->attrs[NL80211_ATTR_IE])
6660 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6661 else
6662 ie_len = 0;
6663
6664 if (ie_len > wiphy->max_scan_ie_len) {
6665 err = -EINVAL;
6666 goto unlock;
6667 }
6668
6669 request = kzalloc(sizeof(*request)
6670 + sizeof(*request->ssids) * n_ssids
6671 + sizeof(*request->channels) * n_channels
6672 + ie_len, GFP_KERNEL);
6673 if (!request) {
6674 err = -ENOMEM;
6675 goto unlock;
6676 }
6677
6678 if (n_ssids)
6679 request->ssids = (void *)&request->channels[n_channels];
6680 request->n_ssids = n_ssids;
6681 if (ie_len) {
6682 if (n_ssids)
6683 request->ie = (void *)(request->ssids + n_ssids);
6684 else
6685 request->ie = (void *)(request->channels + n_channels);
6686 }
6687
6688 i = 0;
6689 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6690 /* user specified, bail out if channel not found */
6691 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6692 struct ieee80211_channel *chan;
6693
6694 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6695
6696 if (!chan) {
6697 err = -EINVAL;
6698 goto out_free;
6699 }
6700
6701 /* ignore disabled channels */
6702 if (chan->flags & IEEE80211_CHAN_DISABLED)
6703 continue;
6704
6705 request->channels[i] = chan;
6706 i++;
6707 }
6708 } else {
6709 enum nl80211_band band;
6710
6711 /* all channels */
6712 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6713 int j;
6714
6715 if (!wiphy->bands[band])
6716 continue;
6717 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6718 struct ieee80211_channel *chan;
6719
6720 chan = &wiphy->bands[band]->channels[j];
6721
6722 if (chan->flags & IEEE80211_CHAN_DISABLED)
6723 continue;
6724
6725 request->channels[i] = chan;
6726 i++;
6727 }
6728 }
6729 }
6730
6731 if (!i) {
6732 err = -EINVAL;
6733 goto out_free;
6734 }
6735
6736 request->n_channels = i;
6737
6738 wdev_lock(wdev);
6739 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6740 struct ieee80211_channel *chan;
6741
6742 if (request->n_channels != 1) {
6743 wdev_unlock(wdev);
6744 err = -EBUSY;
6745 goto out_free;
6746 }
6747
6748 chan = request->channels[0];
6749 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6750 wdev_unlock(wdev);
6751 err = -EBUSY;
6752 goto out_free;
6753 }
6754 }
6755 wdev_unlock(wdev);
6756
6757 i = 0;
6758 if (n_ssids) {
6759 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6760 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6761 err = -EINVAL;
6762 goto out_free;
6763 }
6764 request->ssids[i].ssid_len = nla_len(attr);
6765 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6766 i++;
6767 }
6768 }
6769
6770 if (info->attrs[NL80211_ATTR_IE]) {
6771 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6772 memcpy((void *)request->ie,
6773 nla_data(info->attrs[NL80211_ATTR_IE]),
6774 request->ie_len);
6775 }
6776
6777 for (i = 0; i < NUM_NL80211_BANDS; i++)
6778 if (wiphy->bands[i])
6779 request->rates[i] =
6780 (1 << wiphy->bands[i]->n_bitrates) - 1;
6781
6782 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6783 nla_for_each_nested(attr,
6784 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6785 tmp) {
6786 enum nl80211_band band = nla_type(attr);
6787
6788 if (band < 0 || band >= NUM_NL80211_BANDS) {
6789 err = -EINVAL;
6790 goto out_free;
6791 }
6792
6793 if (!wiphy->bands[band])
6794 continue;
6795
6796 err = ieee80211_get_ratemask(wiphy->bands[band],
6797 nla_data(attr),
6798 nla_len(attr),
6799 &request->rates[band]);
6800 if (err)
6801 goto out_free;
6802 }
6803 }
6804
6805 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6806 if (!wiphy_ext_feature_isset(wiphy,
6807 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6808 err = -EOPNOTSUPP;
6809 goto out_free;
6810 }
6811
6812 request->duration =
6813 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6814 request->duration_mandatory =
6815 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6816 }
6817
6818 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6819 request->flags = nla_get_u32(
6820 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6821 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6822 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6823 err = -EOPNOTSUPP;
6824 goto out_free;
6825 }
6826
6827 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6828 if (!(wiphy->features &
6829 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6830 err = -EOPNOTSUPP;
6831 goto out_free;
6832 }
6833
6834 if (wdev->current_bss) {
6835 err = -EOPNOTSUPP;
6836 goto out_free;
6837 }
6838
6839 err = nl80211_parse_random_mac(info->attrs,
6840 request->mac_addr,
6841 request->mac_addr_mask);
6842 if (err)
6843 goto out_free;
6844 }
6845 }
6846
6847 request->no_cck =
6848 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6849
6850 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6851 * BSSID to scan for. This was problematic because that same attribute
6852 * was already used for another purpose (local random MAC address). The
6853 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6854 * compatibility with older userspace components, also use the
6855 * NL80211_ATTR_MAC value here if it can be determined to be used for
6856 * the specific BSSID use case instead of the random MAC address
6857 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6858 */
6859 if (info->attrs[NL80211_ATTR_BSSID])
6860 memcpy(request->bssid,
6861 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6862 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6863 info->attrs[NL80211_ATTR_MAC])
6864 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6865 ETH_ALEN);
6866 else
6867 eth_broadcast_addr(request->bssid);
6868
6869 request->wdev = wdev;
6870 request->wiphy = &rdev->wiphy;
6871 request->scan_start = jiffies;
6872
6873 rdev->scan_req = request;
6874 err = rdev_scan(rdev, request);
6875
6876 if (!err) {
6877 nl80211_send_scan_start(rdev, wdev);
6878 if (wdev->netdev)
6879 dev_hold(wdev->netdev);
6880 } else {
6881 out_free:
6882 rdev->scan_req = NULL;
6883 kfree(request);
6884 }
6885
6886 unlock:
6887 return err;
6888 }
6889
6890 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6891 {
6892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6893 struct wireless_dev *wdev = info->user_ptr[1];
6894
6895 if (!rdev->ops->abort_scan)
6896 return -EOPNOTSUPP;
6897
6898 if (rdev->scan_msg)
6899 return 0;
6900
6901 if (!rdev->scan_req)
6902 return -ENOENT;
6903
6904 rdev_abort_scan(rdev, wdev);
6905 return 0;
6906 }
6907
6908 static int
6909 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6910 struct cfg80211_sched_scan_request *request,
6911 struct nlattr **attrs)
6912 {
6913 int tmp, err, i = 0;
6914 struct nlattr *attr;
6915
6916 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6917 u32 interval;
6918
6919 /*
6920 * If scan plans are not specified,
6921 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6922 * case one scan plan will be set with the specified scan
6923 * interval and infinite number of iterations.
6924 */
6925 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6926 if (!interval)
6927 return -EINVAL;
6928
6929 request->scan_plans[0].interval =
6930 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6931 if (!request->scan_plans[0].interval)
6932 return -EINVAL;
6933
6934 if (request->scan_plans[0].interval >
6935 wiphy->max_sched_scan_plan_interval)
6936 request->scan_plans[0].interval =
6937 wiphy->max_sched_scan_plan_interval;
6938
6939 return 0;
6940 }
6941
6942 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6943 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6944
6945 if (WARN_ON(i >= n_plans))
6946 return -EINVAL;
6947
6948 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6949 attr, nl80211_plan_policy, NULL);
6950 if (err)
6951 return err;
6952
6953 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6954 return -EINVAL;
6955
6956 request->scan_plans[i].interval =
6957 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6958 if (!request->scan_plans[i].interval ||
6959 request->scan_plans[i].interval >
6960 wiphy->max_sched_scan_plan_interval)
6961 return -EINVAL;
6962
6963 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6964 request->scan_plans[i].iterations =
6965 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6966 if (!request->scan_plans[i].iterations ||
6967 (request->scan_plans[i].iterations >
6968 wiphy->max_sched_scan_plan_iterations))
6969 return -EINVAL;
6970 } else if (i < n_plans - 1) {
6971 /*
6972 * All scan plans but the last one must specify
6973 * a finite number of iterations
6974 */
6975 return -EINVAL;
6976 }
6977
6978 i++;
6979 }
6980
6981 /*
6982 * The last scan plan must not specify the number of
6983 * iterations, it is supposed to run infinitely
6984 */
6985 if (request->scan_plans[n_plans - 1].iterations)
6986 return -EINVAL;
6987
6988 return 0;
6989 }
6990
6991 static struct cfg80211_sched_scan_request *
6992 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6993 struct nlattr **attrs, int max_match_sets)
6994 {
6995 struct cfg80211_sched_scan_request *request;
6996 struct nlattr *attr;
6997 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6998 enum nl80211_band band;
6999 size_t ie_len;
7000 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7001 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7002
7003 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7004 return ERR_PTR(-EINVAL);
7005
7006 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7007 n_channels = validate_scan_freqs(
7008 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7009 if (!n_channels)
7010 return ERR_PTR(-EINVAL);
7011 } else {
7012 n_channels = ieee80211_get_num_supported_channels(wiphy);
7013 }
7014
7015 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7016 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7017 tmp)
7018 n_ssids++;
7019
7020 if (n_ssids > wiphy->max_sched_scan_ssids)
7021 return ERR_PTR(-EINVAL);
7022
7023 /*
7024 * First, count the number of 'real' matchsets. Due to an issue with
7025 * the old implementation, matchsets containing only the RSSI attribute
7026 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7027 * RSSI for all matchsets, rather than their own matchset for reporting
7028 * all APs with a strong RSSI. This is needed to be compatible with
7029 * older userspace that treated a matchset with only the RSSI as the
7030 * global RSSI for all other matchsets - if there are other matchsets.
7031 */
7032 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7033 nla_for_each_nested(attr,
7034 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7035 tmp) {
7036 struct nlattr *rssi;
7037
7038 err = nla_parse_nested(tb,
7039 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7040 attr, nl80211_match_policy,
7041 NULL);
7042 if (err)
7043 return ERR_PTR(err);
7044
7045 /* SSID and BSSID are mutually exclusive */
7046 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7047 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7048 return ERR_PTR(-EINVAL);
7049
7050 /* add other standalone attributes here */
7051 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7052 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7053 n_match_sets++;
7054 continue;
7055 }
7056 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7057 if (rssi)
7058 default_match_rssi = nla_get_s32(rssi);
7059 }
7060 }
7061
7062 /* However, if there's no other matchset, add the RSSI one */
7063 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7064 n_match_sets = 1;
7065
7066 if (n_match_sets > max_match_sets)
7067 return ERR_PTR(-EINVAL);
7068
7069 if (attrs[NL80211_ATTR_IE])
7070 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7071 else
7072 ie_len = 0;
7073
7074 if (ie_len > wiphy->max_sched_scan_ie_len)
7075 return ERR_PTR(-EINVAL);
7076
7077 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7078 /*
7079 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7080 * each scan plan already specifies its own interval
7081 */
7082 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7083 return ERR_PTR(-EINVAL);
7084
7085 nla_for_each_nested(attr,
7086 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7087 n_plans++;
7088 } else {
7089 /*
7090 * The scan interval attribute is kept for backward
7091 * compatibility. If no scan plans are specified and sched scan
7092 * interval is specified, one scan plan will be set with this
7093 * scan interval and infinite number of iterations.
7094 */
7095 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7096 return ERR_PTR(-EINVAL);
7097
7098 n_plans = 1;
7099 }
7100
7101 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7102 return ERR_PTR(-EINVAL);
7103
7104 if (!wiphy_ext_feature_isset(
7105 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7106 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7107 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7108 return ERR_PTR(-EINVAL);
7109
7110 request = kzalloc(sizeof(*request)
7111 + sizeof(*request->ssids) * n_ssids
7112 + sizeof(*request->match_sets) * n_match_sets
7113 + sizeof(*request->scan_plans) * n_plans
7114 + sizeof(*request->channels) * n_channels
7115 + ie_len, GFP_KERNEL);
7116 if (!request)
7117 return ERR_PTR(-ENOMEM);
7118
7119 if (n_ssids)
7120 request->ssids = (void *)&request->channels[n_channels];
7121 request->n_ssids = n_ssids;
7122 if (ie_len) {
7123 if (n_ssids)
7124 request->ie = (void *)(request->ssids + n_ssids);
7125 else
7126 request->ie = (void *)(request->channels + n_channels);
7127 }
7128
7129 if (n_match_sets) {
7130 if (request->ie)
7131 request->match_sets = (void *)(request->ie + ie_len);
7132 else if (n_ssids)
7133 request->match_sets =
7134 (void *)(request->ssids + n_ssids);
7135 else
7136 request->match_sets =
7137 (void *)(request->channels + n_channels);
7138 }
7139 request->n_match_sets = n_match_sets;
7140
7141 if (n_match_sets)
7142 request->scan_plans = (void *)(request->match_sets +
7143 n_match_sets);
7144 else if (request->ie)
7145 request->scan_plans = (void *)(request->ie + ie_len);
7146 else if (n_ssids)
7147 request->scan_plans = (void *)(request->ssids + n_ssids);
7148 else
7149 request->scan_plans = (void *)(request->channels + n_channels);
7150
7151 request->n_scan_plans = n_plans;
7152
7153 i = 0;
7154 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7155 /* user specified, bail out if channel not found */
7156 nla_for_each_nested(attr,
7157 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7158 tmp) {
7159 struct ieee80211_channel *chan;
7160
7161 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7162
7163 if (!chan) {
7164 err = -EINVAL;
7165 goto out_free;
7166 }
7167
7168 /* ignore disabled channels */
7169 if (chan->flags & IEEE80211_CHAN_DISABLED)
7170 continue;
7171
7172 request->channels[i] = chan;
7173 i++;
7174 }
7175 } else {
7176 /* all channels */
7177 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7178 int j;
7179
7180 if (!wiphy->bands[band])
7181 continue;
7182 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7183 struct ieee80211_channel *chan;
7184
7185 chan = &wiphy->bands[band]->channels[j];
7186
7187 if (chan->flags & IEEE80211_CHAN_DISABLED)
7188 continue;
7189
7190 request->channels[i] = chan;
7191 i++;
7192 }
7193 }
7194 }
7195
7196 if (!i) {
7197 err = -EINVAL;
7198 goto out_free;
7199 }
7200
7201 request->n_channels = i;
7202
7203 i = 0;
7204 if (n_ssids) {
7205 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7206 tmp) {
7207 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7208 err = -EINVAL;
7209 goto out_free;
7210 }
7211 request->ssids[i].ssid_len = nla_len(attr);
7212 memcpy(request->ssids[i].ssid, nla_data(attr),
7213 nla_len(attr));
7214 i++;
7215 }
7216 }
7217
7218 i = 0;
7219 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7220 nla_for_each_nested(attr,
7221 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7222 tmp) {
7223 struct nlattr *ssid, *bssid, *rssi;
7224
7225 err = nla_parse_nested(tb,
7226 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7227 attr, nl80211_match_policy,
7228 NULL);
7229 if (err)
7230 goto out_free;
7231 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7232 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7233 if (ssid || bssid) {
7234 if (WARN_ON(i >= n_match_sets)) {
7235 /* this indicates a programming error,
7236 * the loop above should have verified
7237 * things properly
7238 */
7239 err = -EINVAL;
7240 goto out_free;
7241 }
7242
7243 if (ssid) {
7244 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7245 err = -EINVAL;
7246 goto out_free;
7247 }
7248 memcpy(request->match_sets[i].ssid.ssid,
7249 nla_data(ssid), nla_len(ssid));
7250 request->match_sets[i].ssid.ssid_len =
7251 nla_len(ssid);
7252 }
7253 if (bssid) {
7254 if (nla_len(bssid) != ETH_ALEN) {
7255 err = -EINVAL;
7256 goto out_free;
7257 }
7258 memcpy(request->match_sets[i].bssid,
7259 nla_data(bssid), ETH_ALEN);
7260 }
7261
7262 /* special attribute - old implementation w/a */
7263 request->match_sets[i].rssi_thold =
7264 default_match_rssi;
7265 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7266 if (rssi)
7267 request->match_sets[i].rssi_thold =
7268 nla_get_s32(rssi);
7269 }
7270 i++;
7271 }
7272
7273 /* there was no other matchset, so the RSSI one is alone */
7274 if (i == 0 && n_match_sets)
7275 request->match_sets[0].rssi_thold = default_match_rssi;
7276
7277 request->min_rssi_thold = INT_MAX;
7278 for (i = 0; i < n_match_sets; i++)
7279 request->min_rssi_thold =
7280 min(request->match_sets[i].rssi_thold,
7281 request->min_rssi_thold);
7282 } else {
7283 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7284 }
7285
7286 if (ie_len) {
7287 request->ie_len = ie_len;
7288 memcpy((void *)request->ie,
7289 nla_data(attrs[NL80211_ATTR_IE]),
7290 request->ie_len);
7291 }
7292
7293 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7294 request->flags = nla_get_u32(
7295 attrs[NL80211_ATTR_SCAN_FLAGS]);
7296 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7297 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7298 err = -EOPNOTSUPP;
7299 goto out_free;
7300 }
7301
7302 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7303 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7304
7305 if (!wdev) /* must be net-detect */
7306 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7307
7308 if (!(wiphy->features & flg)) {
7309 err = -EOPNOTSUPP;
7310 goto out_free;
7311 }
7312
7313 if (wdev && wdev->current_bss) {
7314 err = -EOPNOTSUPP;
7315 goto out_free;
7316 }
7317
7318 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7319 request->mac_addr_mask);
7320 if (err)
7321 goto out_free;
7322 }
7323 }
7324
7325 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7326 request->delay =
7327 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7328
7329 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7330 request->relative_rssi = nla_get_s8(
7331 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7332 request->relative_rssi_set = true;
7333 }
7334
7335 if (request->relative_rssi_set &&
7336 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7337 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7338
7339 rssi_adjust = nla_data(
7340 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7341 request->rssi_adjust.band = rssi_adjust->band;
7342 request->rssi_adjust.delta = rssi_adjust->delta;
7343 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7344 err = -EINVAL;
7345 goto out_free;
7346 }
7347 }
7348
7349 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7350 if (err)
7351 goto out_free;
7352
7353 request->scan_start = jiffies;
7354
7355 return request;
7356
7357 out_free:
7358 kfree(request);
7359 return ERR_PTR(err);
7360 }
7361
7362 static int nl80211_start_sched_scan(struct sk_buff *skb,
7363 struct genl_info *info)
7364 {
7365 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7366 struct net_device *dev = info->user_ptr[1];
7367 struct wireless_dev *wdev = dev->ieee80211_ptr;
7368 struct cfg80211_sched_scan_request *sched_scan_req;
7369 bool want_multi;
7370 int err;
7371
7372 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7373 return -EOPNOTSUPP;
7374
7375 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7376 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7377 if (err)
7378 return err;
7379
7380 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7381 info->attrs,
7382 rdev->wiphy.max_match_sets);
7383
7384 err = PTR_ERR_OR_ZERO(sched_scan_req);
7385 if (err)
7386 goto out_err;
7387
7388 /* leave request id zero for legacy request
7389 * or if driver does not support multi-scheduled scan
7390 */
7391 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7392 while (!sched_scan_req->reqid)
7393 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7394 }
7395
7396 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7397 if (err)
7398 goto out_free;
7399
7400 sched_scan_req->dev = dev;
7401 sched_scan_req->wiphy = &rdev->wiphy;
7402
7403 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7404 sched_scan_req->owner_nlportid = info->snd_portid;
7405
7406 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7407
7408 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7409 return 0;
7410
7411 out_free:
7412 kfree(sched_scan_req);
7413 out_err:
7414 return err;
7415 }
7416
7417 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7418 struct genl_info *info)
7419 {
7420 struct cfg80211_sched_scan_request *req;
7421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7422 u64 cookie;
7423
7424 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7425 return -EOPNOTSUPP;
7426
7427 if (info->attrs[NL80211_ATTR_COOKIE]) {
7428 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7429 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7430 }
7431
7432 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7433 struct cfg80211_sched_scan_request,
7434 list);
7435 if (!req || req->reqid ||
7436 (req->owner_nlportid &&
7437 req->owner_nlportid != info->snd_portid))
7438 return -ENOENT;
7439
7440 return cfg80211_stop_sched_scan_req(rdev, req, false);
7441 }
7442
7443 static int nl80211_start_radar_detection(struct sk_buff *skb,
7444 struct genl_info *info)
7445 {
7446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7447 struct net_device *dev = info->user_ptr[1];
7448 struct wireless_dev *wdev = dev->ieee80211_ptr;
7449 struct cfg80211_chan_def chandef;
7450 enum nl80211_dfs_regions dfs_region;
7451 unsigned int cac_time_ms;
7452 int err;
7453
7454 dfs_region = reg_get_dfs_region(wdev->wiphy);
7455 if (dfs_region == NL80211_DFS_UNSET)
7456 return -EINVAL;
7457
7458 err = nl80211_parse_chandef(rdev, info, &chandef);
7459 if (err)
7460 return err;
7461
7462 if (netif_carrier_ok(dev))
7463 return -EBUSY;
7464
7465 if (wdev->cac_started)
7466 return -EBUSY;
7467
7468 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7469 wdev->iftype);
7470 if (err < 0)
7471 return err;
7472
7473 if (err == 0)
7474 return -EINVAL;
7475
7476 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7477 return -EINVAL;
7478
7479 if (!rdev->ops->start_radar_detection)
7480 return -EOPNOTSUPP;
7481
7482 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7483 if (WARN_ON(!cac_time_ms))
7484 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7485
7486 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7487 if (!err) {
7488 wdev->chandef = chandef;
7489 wdev->cac_started = true;
7490 wdev->cac_start_time = jiffies;
7491 wdev->cac_time_ms = cac_time_ms;
7492 }
7493 return err;
7494 }
7495
7496 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7497 {
7498 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7499 struct net_device *dev = info->user_ptr[1];
7500 struct wireless_dev *wdev = dev->ieee80211_ptr;
7501 struct cfg80211_csa_settings params;
7502 /* csa_attrs is defined static to avoid waste of stack size - this
7503 * function is called under RTNL lock, so this should not be a problem.
7504 */
7505 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7506 int err;
7507 bool need_new_beacon = false;
7508 bool need_handle_dfs_flag = true;
7509 int len, i;
7510 u32 cs_count;
7511
7512 if (!rdev->ops->channel_switch ||
7513 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7514 return -EOPNOTSUPP;
7515
7516 switch (dev->ieee80211_ptr->iftype) {
7517 case NL80211_IFTYPE_AP:
7518 case NL80211_IFTYPE_P2P_GO:
7519 need_new_beacon = true;
7520 /* For all modes except AP the handle_dfs flag needs to be
7521 * supplied to tell the kernel that userspace will handle radar
7522 * events when they happen. Otherwise a switch to a channel
7523 * requiring DFS will be rejected.
7524 */
7525 need_handle_dfs_flag = false;
7526
7527 /* useless if AP is not running */
7528 if (!wdev->beacon_interval)
7529 return -ENOTCONN;
7530 break;
7531 case NL80211_IFTYPE_ADHOC:
7532 if (!wdev->ssid_len)
7533 return -ENOTCONN;
7534 break;
7535 case NL80211_IFTYPE_MESH_POINT:
7536 if (!wdev->mesh_id_len)
7537 return -ENOTCONN;
7538 break;
7539 default:
7540 return -EOPNOTSUPP;
7541 }
7542
7543 memset(&params, 0, sizeof(params));
7544
7545 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7546 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7547 return -EINVAL;
7548
7549 /* only important for AP, IBSS and mesh create IEs internally */
7550 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7551 return -EINVAL;
7552
7553 /* Even though the attribute is u32, the specification says
7554 * u8, so let's make sure we don't overflow.
7555 */
7556 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7557 if (cs_count > 255)
7558 return -EINVAL;
7559
7560 params.count = cs_count;
7561
7562 if (!need_new_beacon)
7563 goto skip_beacons;
7564
7565 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7566 if (err)
7567 return err;
7568
7569 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7570 info->attrs[NL80211_ATTR_CSA_IES],
7571 nl80211_policy, info->extack);
7572 if (err)
7573 return err;
7574
7575 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7576 if (err)
7577 return err;
7578
7579 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7580 return -EINVAL;
7581
7582 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7583 if (!len || (len % sizeof(u16)))
7584 return -EINVAL;
7585
7586 params.n_counter_offsets_beacon = len / sizeof(u16);
7587 if (rdev->wiphy.max_num_csa_counters &&
7588 (params.n_counter_offsets_beacon >
7589 rdev->wiphy.max_num_csa_counters))
7590 return -EINVAL;
7591
7592 params.counter_offsets_beacon =
7593 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7594
7595 /* sanity checks - counters should fit and be the same */
7596 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7597 u16 offset = params.counter_offsets_beacon[i];
7598
7599 if (offset >= params.beacon_csa.tail_len)
7600 return -EINVAL;
7601
7602 if (params.beacon_csa.tail[offset] != params.count)
7603 return -EINVAL;
7604 }
7605
7606 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7607 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7608 if (!len || (len % sizeof(u16)))
7609 return -EINVAL;
7610
7611 params.n_counter_offsets_presp = len / sizeof(u16);
7612 if (rdev->wiphy.max_num_csa_counters &&
7613 (params.n_counter_offsets_presp >
7614 rdev->wiphy.max_num_csa_counters))
7615 return -EINVAL;
7616
7617 params.counter_offsets_presp =
7618 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7619
7620 /* sanity checks - counters should fit and be the same */
7621 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7622 u16 offset = params.counter_offsets_presp[i];
7623
7624 if (offset >= params.beacon_csa.probe_resp_len)
7625 return -EINVAL;
7626
7627 if (params.beacon_csa.probe_resp[offset] !=
7628 params.count)
7629 return -EINVAL;
7630 }
7631 }
7632
7633 skip_beacons:
7634 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7635 if (err)
7636 return err;
7637
7638 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7639 wdev->iftype))
7640 return -EINVAL;
7641
7642 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7643 &params.chandef,
7644 wdev->iftype);
7645 if (err < 0)
7646 return err;
7647
7648 if (err > 0) {
7649 params.radar_required = true;
7650 if (need_handle_dfs_flag &&
7651 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7652 return -EINVAL;
7653 }
7654 }
7655
7656 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7657 params.block_tx = true;
7658
7659 wdev_lock(wdev);
7660 err = rdev_channel_switch(rdev, dev, &params);
7661 wdev_unlock(wdev);
7662
7663 return err;
7664 }
7665
7666 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7667 u32 seq, int flags,
7668 struct cfg80211_registered_device *rdev,
7669 struct wireless_dev *wdev,
7670 struct cfg80211_internal_bss *intbss)
7671 {
7672 struct cfg80211_bss *res = &intbss->pub;
7673 const struct cfg80211_bss_ies *ies;
7674 void *hdr;
7675 struct nlattr *bss;
7676
7677 ASSERT_WDEV_LOCK(wdev);
7678
7679 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7680 NL80211_CMD_NEW_SCAN_RESULTS);
7681 if (!hdr)
7682 return -1;
7683
7684 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7685
7686 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7687 goto nla_put_failure;
7688 if (wdev->netdev &&
7689 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7690 goto nla_put_failure;
7691 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7692 NL80211_ATTR_PAD))
7693 goto nla_put_failure;
7694
7695 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7696 if (!bss)
7697 goto nla_put_failure;
7698 if ((!is_zero_ether_addr(res->bssid) &&
7699 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7700 goto nla_put_failure;
7701
7702 rcu_read_lock();
7703 /* indicate whether we have probe response data or not */
7704 if (rcu_access_pointer(res->proberesp_ies) &&
7705 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7706 goto fail_unlock_rcu;
7707
7708 /* this pointer prefers to be pointed to probe response data
7709 * but is always valid
7710 */
7711 ies = rcu_dereference(res->ies);
7712 if (ies) {
7713 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7714 NL80211_BSS_PAD))
7715 goto fail_unlock_rcu;
7716 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7717 ies->len, ies->data))
7718 goto fail_unlock_rcu;
7719 }
7720
7721 /* and this pointer is always (unless driver didn't know) beacon data */
7722 ies = rcu_dereference(res->beacon_ies);
7723 if (ies && ies->from_beacon) {
7724 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7725 NL80211_BSS_PAD))
7726 goto fail_unlock_rcu;
7727 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7728 ies->len, ies->data))
7729 goto fail_unlock_rcu;
7730 }
7731 rcu_read_unlock();
7732
7733 if (res->beacon_interval &&
7734 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7735 goto nla_put_failure;
7736 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7737 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7738 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7739 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7740 jiffies_to_msecs(jiffies - intbss->ts)))
7741 goto nla_put_failure;
7742
7743 if (intbss->parent_tsf &&
7744 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7745 intbss->parent_tsf, NL80211_BSS_PAD) ||
7746 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7747 intbss->parent_bssid)))
7748 goto nla_put_failure;
7749
7750 if (intbss->ts_boottime &&
7751 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7752 intbss->ts_boottime, NL80211_BSS_PAD))
7753 goto nla_put_failure;
7754
7755 switch (rdev->wiphy.signal_type) {
7756 case CFG80211_SIGNAL_TYPE_MBM:
7757 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7758 goto nla_put_failure;
7759 break;
7760 case CFG80211_SIGNAL_TYPE_UNSPEC:
7761 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7762 goto nla_put_failure;
7763 break;
7764 default:
7765 break;
7766 }
7767
7768 switch (wdev->iftype) {
7769 case NL80211_IFTYPE_P2P_CLIENT:
7770 case NL80211_IFTYPE_STATION:
7771 if (intbss == wdev->current_bss &&
7772 nla_put_u32(msg, NL80211_BSS_STATUS,
7773 NL80211_BSS_STATUS_ASSOCIATED))
7774 goto nla_put_failure;
7775 break;
7776 case NL80211_IFTYPE_ADHOC:
7777 if (intbss == wdev->current_bss &&
7778 nla_put_u32(msg, NL80211_BSS_STATUS,
7779 NL80211_BSS_STATUS_IBSS_JOINED))
7780 goto nla_put_failure;
7781 break;
7782 default:
7783 break;
7784 }
7785
7786 nla_nest_end(msg, bss);
7787
7788 genlmsg_end(msg, hdr);
7789 return 0;
7790
7791 fail_unlock_rcu:
7792 rcu_read_unlock();
7793 nla_put_failure:
7794 genlmsg_cancel(msg, hdr);
7795 return -EMSGSIZE;
7796 }
7797
7798 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7799 {
7800 struct cfg80211_registered_device *rdev;
7801 struct cfg80211_internal_bss *scan;
7802 struct wireless_dev *wdev;
7803 int start = cb->args[2], idx = 0;
7804 int err;
7805
7806 rtnl_lock();
7807 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7808 if (err) {
7809 rtnl_unlock();
7810 return err;
7811 }
7812
7813 wdev_lock(wdev);
7814 spin_lock_bh(&rdev->bss_lock);
7815 cfg80211_bss_expire(rdev);
7816
7817 cb->seq = rdev->bss_generation;
7818
7819 list_for_each_entry(scan, &rdev->bss_list, list) {
7820 if (++idx <= start)
7821 continue;
7822 if (nl80211_send_bss(skb, cb,
7823 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7824 rdev, wdev, scan) < 0) {
7825 idx--;
7826 break;
7827 }
7828 }
7829
7830 spin_unlock_bh(&rdev->bss_lock);
7831 wdev_unlock(wdev);
7832
7833 cb->args[2] = idx;
7834 rtnl_unlock();
7835
7836 return skb->len;
7837 }
7838
7839 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7840 int flags, struct net_device *dev,
7841 bool allow_radio_stats,
7842 struct survey_info *survey)
7843 {
7844 void *hdr;
7845 struct nlattr *infoattr;
7846
7847 /* skip radio stats if userspace didn't request them */
7848 if (!survey->channel && !allow_radio_stats)
7849 return 0;
7850
7851 hdr = nl80211hdr_put(msg, portid, seq, flags,
7852 NL80211_CMD_NEW_SURVEY_RESULTS);
7853 if (!hdr)
7854 return -ENOMEM;
7855
7856 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7857 goto nla_put_failure;
7858
7859 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7860 if (!infoattr)
7861 goto nla_put_failure;
7862
7863 if (survey->channel &&
7864 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7865 survey->channel->center_freq))
7866 goto nla_put_failure;
7867
7868 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7869 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7870 goto nla_put_failure;
7871 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7872 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7873 goto nla_put_failure;
7874 if ((survey->filled & SURVEY_INFO_TIME) &&
7875 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7876 survey->time, NL80211_SURVEY_INFO_PAD))
7877 goto nla_put_failure;
7878 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7879 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7880 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7881 goto nla_put_failure;
7882 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7883 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7884 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7885 goto nla_put_failure;
7886 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7887 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7888 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7889 goto nla_put_failure;
7890 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7891 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7892 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7893 goto nla_put_failure;
7894 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7895 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7896 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7897 goto nla_put_failure;
7898
7899 nla_nest_end(msg, infoattr);
7900
7901 genlmsg_end(msg, hdr);
7902 return 0;
7903
7904 nla_put_failure:
7905 genlmsg_cancel(msg, hdr);
7906 return -EMSGSIZE;
7907 }
7908
7909 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7910 {
7911 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7912 struct survey_info survey;
7913 struct cfg80211_registered_device *rdev;
7914 struct wireless_dev *wdev;
7915 int survey_idx = cb->args[2];
7916 int res;
7917 bool radio_stats;
7918
7919 rtnl_lock();
7920 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7921 if (res)
7922 goto out_err;
7923
7924 /* prepare_wdev_dump parsed the attributes */
7925 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7926
7927 if (!wdev->netdev) {
7928 res = -EINVAL;
7929 goto out_err;
7930 }
7931
7932 if (!rdev->ops->dump_survey) {
7933 res = -EOPNOTSUPP;
7934 goto out_err;
7935 }
7936
7937 while (1) {
7938 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7939 if (res == -ENOENT)
7940 break;
7941 if (res)
7942 goto out_err;
7943
7944 /* don't send disabled channels, but do send non-channel data */
7945 if (survey.channel &&
7946 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7947 survey_idx++;
7948 continue;
7949 }
7950
7951 if (nl80211_send_survey(skb,
7952 NETLINK_CB(cb->skb).portid,
7953 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7954 wdev->netdev, radio_stats, &survey) < 0)
7955 goto out;
7956 survey_idx++;
7957 }
7958
7959 out:
7960 cb->args[2] = survey_idx;
7961 res = skb->len;
7962 out_err:
7963 rtnl_unlock();
7964 return res;
7965 }
7966
7967 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7968 {
7969 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7970 NL80211_WPA_VERSION_2));
7971 }
7972
7973 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7974 {
7975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7976 struct net_device *dev = info->user_ptr[1];
7977 struct ieee80211_channel *chan;
7978 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7979 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7980 enum nl80211_auth_type auth_type;
7981 struct key_parse key;
7982 bool local_state_change;
7983
7984 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7985 return -EINVAL;
7986
7987 if (!info->attrs[NL80211_ATTR_MAC])
7988 return -EINVAL;
7989
7990 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7991 return -EINVAL;
7992
7993 if (!info->attrs[NL80211_ATTR_SSID])
7994 return -EINVAL;
7995
7996 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7997 return -EINVAL;
7998
7999 err = nl80211_parse_key(info, &key);
8000 if (err)
8001 return err;
8002
8003 if (key.idx >= 0) {
8004 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8005 return -EINVAL;
8006 if (!key.p.key || !key.p.key_len)
8007 return -EINVAL;
8008 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8009 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8010 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8011 key.p.key_len != WLAN_KEY_LEN_WEP104))
8012 return -EINVAL;
8013 if (key.idx > 3)
8014 return -EINVAL;
8015 } else {
8016 key.p.key_len = 0;
8017 key.p.key = NULL;
8018 }
8019
8020 if (key.idx >= 0) {
8021 int i;
8022 bool ok = false;
8023
8024 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8025 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8026 ok = true;
8027 break;
8028 }
8029 }
8030 if (!ok)
8031 return -EINVAL;
8032 }
8033
8034 if (!rdev->ops->auth)
8035 return -EOPNOTSUPP;
8036
8037 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8038 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8039 return -EOPNOTSUPP;
8040
8041 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8042 chan = nl80211_get_valid_chan(&rdev->wiphy,
8043 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8044 if (!chan)
8045 return -EINVAL;
8046
8047 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8048 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8049
8050 if (info->attrs[NL80211_ATTR_IE]) {
8051 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8052 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8053 }
8054
8055 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8056 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8057 return -EINVAL;
8058
8059 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8060 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8061 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8062 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8063 !info->attrs[NL80211_ATTR_AUTH_DATA])
8064 return -EINVAL;
8065
8066 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8067 if (auth_type != NL80211_AUTHTYPE_SAE &&
8068 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8069 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8070 auth_type != NL80211_AUTHTYPE_FILS_PK)
8071 return -EINVAL;
8072 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8073 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8074 /* need to include at least Auth Transaction and Status Code */
8075 if (auth_data_len < 4)
8076 return -EINVAL;
8077 }
8078
8079 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8080
8081 /*
8082 * Since we no longer track auth state, ignore
8083 * requests to only change local state.
8084 */
8085 if (local_state_change)
8086 return 0;
8087
8088 wdev_lock(dev->ieee80211_ptr);
8089 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8090 ssid, ssid_len, ie, ie_len,
8091 key.p.key, key.p.key_len, key.idx,
8092 auth_data, auth_data_len);
8093 wdev_unlock(dev->ieee80211_ptr);
8094 return err;
8095 }
8096
8097 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8098 struct genl_info *info,
8099 struct cfg80211_crypto_settings *settings,
8100 int cipher_limit)
8101 {
8102 memset(settings, 0, sizeof(*settings));
8103
8104 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8105
8106 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8107 u16 proto;
8108
8109 proto = nla_get_u16(
8110 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8111 settings->control_port_ethertype = cpu_to_be16(proto);
8112 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8113 proto != ETH_P_PAE)
8114 return -EINVAL;
8115 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8116 settings->control_port_no_encrypt = true;
8117 } else
8118 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8119
8120 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8121 void *data;
8122 int len, i;
8123
8124 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8125 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8126 settings->n_ciphers_pairwise = len / sizeof(u32);
8127
8128 if (len % sizeof(u32))
8129 return -EINVAL;
8130
8131 if (settings->n_ciphers_pairwise > cipher_limit)
8132 return -EINVAL;
8133
8134 memcpy(settings->ciphers_pairwise, data, len);
8135
8136 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8137 if (!cfg80211_supported_cipher_suite(
8138 &rdev->wiphy,
8139 settings->ciphers_pairwise[i]))
8140 return -EINVAL;
8141 }
8142
8143 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8144 settings->cipher_group =
8145 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8146 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8147 settings->cipher_group))
8148 return -EINVAL;
8149 }
8150
8151 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8152 settings->wpa_versions =
8153 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8154 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8155 return -EINVAL;
8156 }
8157
8158 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8159 void *data;
8160 int len;
8161
8162 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8163 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8164 settings->n_akm_suites = len / sizeof(u32);
8165
8166 if (len % sizeof(u32))
8167 return -EINVAL;
8168
8169 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8170 return -EINVAL;
8171
8172 memcpy(settings->akm_suites, data, len);
8173 }
8174
8175 if (info->attrs[NL80211_ATTR_PMK]) {
8176 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8177 return -EINVAL;
8178 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8179 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8180 return -EINVAL;
8181 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8182 }
8183
8184 return 0;
8185 }
8186
8187 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8188 {
8189 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8190 struct net_device *dev = info->user_ptr[1];
8191 struct ieee80211_channel *chan;
8192 struct cfg80211_assoc_request req = {};
8193 const u8 *bssid, *ssid;
8194 int err, ssid_len = 0;
8195
8196 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8197 return -EINVAL;
8198
8199 if (!info->attrs[NL80211_ATTR_MAC] ||
8200 !info->attrs[NL80211_ATTR_SSID] ||
8201 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8202 return -EINVAL;
8203
8204 if (!rdev->ops->assoc)
8205 return -EOPNOTSUPP;
8206
8207 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8208 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8209 return -EOPNOTSUPP;
8210
8211 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8212
8213 chan = nl80211_get_valid_chan(&rdev->wiphy,
8214 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8215 if (!chan)
8216 return -EINVAL;
8217
8218 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8219 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8220
8221 if (info->attrs[NL80211_ATTR_IE]) {
8222 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8223 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8224 }
8225
8226 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8227 enum nl80211_mfp mfp =
8228 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8229 if (mfp == NL80211_MFP_REQUIRED)
8230 req.use_mfp = true;
8231 else if (mfp != NL80211_MFP_NO)
8232 return -EINVAL;
8233 }
8234
8235 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8236 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8237
8238 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8239 req.flags |= ASSOC_REQ_DISABLE_HT;
8240
8241 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8242 memcpy(&req.ht_capa_mask,
8243 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8244 sizeof(req.ht_capa_mask));
8245
8246 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8247 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8248 return -EINVAL;
8249 memcpy(&req.ht_capa,
8250 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8251 sizeof(req.ht_capa));
8252 }
8253
8254 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8255 req.flags |= ASSOC_REQ_DISABLE_VHT;
8256
8257 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8258 memcpy(&req.vht_capa_mask,
8259 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8260 sizeof(req.vht_capa_mask));
8261
8262 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8263 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8264 return -EINVAL;
8265 memcpy(&req.vht_capa,
8266 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8267 sizeof(req.vht_capa));
8268 }
8269
8270 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8271 if (!((rdev->wiphy.features &
8272 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8273 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8274 !wiphy_ext_feature_isset(&rdev->wiphy,
8275 NL80211_EXT_FEATURE_RRM))
8276 return -EINVAL;
8277 req.flags |= ASSOC_REQ_USE_RRM;
8278 }
8279
8280 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8281 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8282 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8283 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8284 return -EINVAL;
8285 req.fils_nonces =
8286 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8287 }
8288
8289 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8290 if (!err) {
8291 wdev_lock(dev->ieee80211_ptr);
8292
8293 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8294 ssid, ssid_len, &req);
8295
8296 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8297 dev->ieee80211_ptr->conn_owner_nlportid =
8298 info->snd_portid;
8299 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8300 bssid, ETH_ALEN);
8301 }
8302
8303 wdev_unlock(dev->ieee80211_ptr);
8304 }
8305
8306 return err;
8307 }
8308
8309 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8310 {
8311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8312 struct net_device *dev = info->user_ptr[1];
8313 const u8 *ie = NULL, *bssid;
8314 int ie_len = 0, err;
8315 u16 reason_code;
8316 bool local_state_change;
8317
8318 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8319 return -EINVAL;
8320
8321 if (!info->attrs[NL80211_ATTR_MAC])
8322 return -EINVAL;
8323
8324 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8325 return -EINVAL;
8326
8327 if (!rdev->ops->deauth)
8328 return -EOPNOTSUPP;
8329
8330 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8331 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8332 return -EOPNOTSUPP;
8333
8334 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8335
8336 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8337 if (reason_code == 0) {
8338 /* Reason Code 0 is reserved */
8339 return -EINVAL;
8340 }
8341
8342 if (info->attrs[NL80211_ATTR_IE]) {
8343 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8344 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8345 }
8346
8347 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8348
8349 wdev_lock(dev->ieee80211_ptr);
8350 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8351 local_state_change);
8352 wdev_unlock(dev->ieee80211_ptr);
8353 return err;
8354 }
8355
8356 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8357 {
8358 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8359 struct net_device *dev = info->user_ptr[1];
8360 const u8 *ie = NULL, *bssid;
8361 int ie_len = 0, err;
8362 u16 reason_code;
8363 bool local_state_change;
8364
8365 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8366 return -EINVAL;
8367
8368 if (!info->attrs[NL80211_ATTR_MAC])
8369 return -EINVAL;
8370
8371 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8372 return -EINVAL;
8373
8374 if (!rdev->ops->disassoc)
8375 return -EOPNOTSUPP;
8376
8377 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8378 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8379 return -EOPNOTSUPP;
8380
8381 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8382
8383 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8384 if (reason_code == 0) {
8385 /* Reason Code 0 is reserved */
8386 return -EINVAL;
8387 }
8388
8389 if (info->attrs[NL80211_ATTR_IE]) {
8390 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8391 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8392 }
8393
8394 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8395
8396 wdev_lock(dev->ieee80211_ptr);
8397 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8398 local_state_change);
8399 wdev_unlock(dev->ieee80211_ptr);
8400 return err;
8401 }
8402
8403 static bool
8404 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8405 int mcast_rate[NUM_NL80211_BANDS],
8406 int rateval)
8407 {
8408 struct wiphy *wiphy = &rdev->wiphy;
8409 bool found = false;
8410 int band, i;
8411
8412 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8413 struct ieee80211_supported_band *sband;
8414
8415 sband = wiphy->bands[band];
8416 if (!sband)
8417 continue;
8418
8419 for (i = 0; i < sband->n_bitrates; i++) {
8420 if (sband->bitrates[i].bitrate == rateval) {
8421 mcast_rate[band] = i + 1;
8422 found = true;
8423 break;
8424 }
8425 }
8426 }
8427
8428 return found;
8429 }
8430
8431 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8432 {
8433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8434 struct net_device *dev = info->user_ptr[1];
8435 struct cfg80211_ibss_params ibss;
8436 struct wiphy *wiphy;
8437 struct cfg80211_cached_keys *connkeys = NULL;
8438 int err;
8439
8440 memset(&ibss, 0, sizeof(ibss));
8441
8442 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8443 return -EINVAL;
8444
8445 if (!info->attrs[NL80211_ATTR_SSID] ||
8446 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8447 return -EINVAL;
8448
8449 ibss.beacon_interval = 100;
8450
8451 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8452 ibss.beacon_interval =
8453 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8454
8455 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8456 ibss.beacon_interval);
8457 if (err)
8458 return err;
8459
8460 if (!rdev->ops->join_ibss)
8461 return -EOPNOTSUPP;
8462
8463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8464 return -EOPNOTSUPP;
8465
8466 wiphy = &rdev->wiphy;
8467
8468 if (info->attrs[NL80211_ATTR_MAC]) {
8469 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8470
8471 if (!is_valid_ether_addr(ibss.bssid))
8472 return -EINVAL;
8473 }
8474 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8475 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8476
8477 if (info->attrs[NL80211_ATTR_IE]) {
8478 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8479 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8480 }
8481
8482 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8483 if (err)
8484 return err;
8485
8486 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8487 NL80211_IFTYPE_ADHOC))
8488 return -EINVAL;
8489
8490 switch (ibss.chandef.width) {
8491 case NL80211_CHAN_WIDTH_5:
8492 case NL80211_CHAN_WIDTH_10:
8493 case NL80211_CHAN_WIDTH_20_NOHT:
8494 break;
8495 case NL80211_CHAN_WIDTH_20:
8496 case NL80211_CHAN_WIDTH_40:
8497 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8498 return -EINVAL;
8499 break;
8500 case NL80211_CHAN_WIDTH_80:
8501 case NL80211_CHAN_WIDTH_80P80:
8502 case NL80211_CHAN_WIDTH_160:
8503 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8504 return -EINVAL;
8505 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8506 NL80211_EXT_FEATURE_VHT_IBSS))
8507 return -EINVAL;
8508 break;
8509 default:
8510 return -EINVAL;
8511 }
8512
8513 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8514 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8515
8516 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8517 u8 *rates =
8518 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8519 int n_rates =
8520 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8521 struct ieee80211_supported_band *sband =
8522 wiphy->bands[ibss.chandef.chan->band];
8523
8524 err = ieee80211_get_ratemask(sband, rates, n_rates,
8525 &ibss.basic_rates);
8526 if (err)
8527 return err;
8528 }
8529
8530 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8531 memcpy(&ibss.ht_capa_mask,
8532 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8533 sizeof(ibss.ht_capa_mask));
8534
8535 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8536 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8537 return -EINVAL;
8538 memcpy(&ibss.ht_capa,
8539 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8540 sizeof(ibss.ht_capa));
8541 }
8542
8543 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8544 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8545 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8546 return -EINVAL;
8547
8548 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8549 bool no_ht = false;
8550
8551 connkeys = nl80211_parse_connkeys(rdev,
8552 info->attrs[NL80211_ATTR_KEYS],
8553 &no_ht);
8554 if (IS_ERR(connkeys))
8555 return PTR_ERR(connkeys);
8556
8557 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8558 no_ht) {
8559 kzfree(connkeys);
8560 return -EINVAL;
8561 }
8562 }
8563
8564 ibss.control_port =
8565 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8566
8567 ibss.userspace_handles_dfs =
8568 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8569
8570 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8571 if (err)
8572 kzfree(connkeys);
8573 return err;
8574 }
8575
8576 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8577 {
8578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8579 struct net_device *dev = info->user_ptr[1];
8580
8581 if (!rdev->ops->leave_ibss)
8582 return -EOPNOTSUPP;
8583
8584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8585 return -EOPNOTSUPP;
8586
8587 return cfg80211_leave_ibss(rdev, dev, false);
8588 }
8589
8590 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8591 {
8592 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8593 struct net_device *dev = info->user_ptr[1];
8594 int mcast_rate[NUM_NL80211_BANDS];
8595 u32 nla_rate;
8596 int err;
8597
8598 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8599 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8600 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8601 return -EOPNOTSUPP;
8602
8603 if (!rdev->ops->set_mcast_rate)
8604 return -EOPNOTSUPP;
8605
8606 memset(mcast_rate, 0, sizeof(mcast_rate));
8607
8608 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8609 return -EINVAL;
8610
8611 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8612 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8613 return -EINVAL;
8614
8615 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8616
8617 return err;
8618 }
8619
8620 static struct sk_buff *
8621 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8622 struct wireless_dev *wdev, int approxlen,
8623 u32 portid, u32 seq, enum nl80211_commands cmd,
8624 enum nl80211_attrs attr,
8625 const struct nl80211_vendor_cmd_info *info,
8626 gfp_t gfp)
8627 {
8628 struct sk_buff *skb;
8629 void *hdr;
8630 struct nlattr *data;
8631
8632 skb = nlmsg_new(approxlen + 100, gfp);
8633 if (!skb)
8634 return NULL;
8635
8636 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8637 if (!hdr) {
8638 kfree_skb(skb);
8639 return NULL;
8640 }
8641
8642 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8643 goto nla_put_failure;
8644
8645 if (info) {
8646 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8647 info->vendor_id))
8648 goto nla_put_failure;
8649 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8650 info->subcmd))
8651 goto nla_put_failure;
8652 }
8653
8654 if (wdev) {
8655 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8656 wdev_id(wdev), NL80211_ATTR_PAD))
8657 goto nla_put_failure;
8658 if (wdev->netdev &&
8659 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8660 wdev->netdev->ifindex))
8661 goto nla_put_failure;
8662 }
8663
8664 data = nla_nest_start(skb, attr);
8665 if (!data)
8666 goto nla_put_failure;
8667
8668 ((void **)skb->cb)[0] = rdev;
8669 ((void **)skb->cb)[1] = hdr;
8670 ((void **)skb->cb)[2] = data;
8671
8672 return skb;
8673
8674 nla_put_failure:
8675 kfree_skb(skb);
8676 return NULL;
8677 }
8678
8679 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8680 struct wireless_dev *wdev,
8681 enum nl80211_commands cmd,
8682 enum nl80211_attrs attr,
8683 int vendor_event_idx,
8684 int approxlen, gfp_t gfp)
8685 {
8686 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8687 const struct nl80211_vendor_cmd_info *info;
8688
8689 switch (cmd) {
8690 case NL80211_CMD_TESTMODE:
8691 if (WARN_ON(vendor_event_idx != -1))
8692 return NULL;
8693 info = NULL;
8694 break;
8695 case NL80211_CMD_VENDOR:
8696 if (WARN_ON(vendor_event_idx < 0 ||
8697 vendor_event_idx >= wiphy->n_vendor_events))
8698 return NULL;
8699 info = &wiphy->vendor_events[vendor_event_idx];
8700 break;
8701 default:
8702 WARN_ON(1);
8703 return NULL;
8704 }
8705
8706 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8707 cmd, attr, info, gfp);
8708 }
8709 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8710
8711 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8712 {
8713 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8714 void *hdr = ((void **)skb->cb)[1];
8715 struct nlattr *data = ((void **)skb->cb)[2];
8716 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8717
8718 /* clear CB data for netlink core to own from now on */
8719 memset(skb->cb, 0, sizeof(skb->cb));
8720
8721 nla_nest_end(skb, data);
8722 genlmsg_end(skb, hdr);
8723
8724 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8725 mcgrp = NL80211_MCGRP_VENDOR;
8726
8727 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8728 mcgrp, gfp);
8729 }
8730 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8731
8732 #ifdef CONFIG_NL80211_TESTMODE
8733 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8734 {
8735 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8736 struct wireless_dev *wdev =
8737 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8738 int err;
8739
8740 if (!rdev->ops->testmode_cmd)
8741 return -EOPNOTSUPP;
8742
8743 if (IS_ERR(wdev)) {
8744 err = PTR_ERR(wdev);
8745 if (err != -EINVAL)
8746 return err;
8747 wdev = NULL;
8748 } else if (wdev->wiphy != &rdev->wiphy) {
8749 return -EINVAL;
8750 }
8751
8752 if (!info->attrs[NL80211_ATTR_TESTDATA])
8753 return -EINVAL;
8754
8755 rdev->cur_cmd_info = info;
8756 err = rdev_testmode_cmd(rdev, wdev,
8757 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8758 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8759 rdev->cur_cmd_info = NULL;
8760
8761 return err;
8762 }
8763
8764 static int nl80211_testmode_dump(struct sk_buff *skb,
8765 struct netlink_callback *cb)
8766 {
8767 struct cfg80211_registered_device *rdev;
8768 int err;
8769 long phy_idx;
8770 void *data = NULL;
8771 int data_len = 0;
8772
8773 rtnl_lock();
8774
8775 if (cb->args[0]) {
8776 /*
8777 * 0 is a valid index, but not valid for args[0],
8778 * so we need to offset by 1.
8779 */
8780 phy_idx = cb->args[0] - 1;
8781
8782 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8783 if (!rdev) {
8784 err = -ENOENT;
8785 goto out_err;
8786 }
8787 } else {
8788 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8789
8790 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8791 attrbuf, nl80211_fam.maxattr,
8792 nl80211_policy, NULL);
8793 if (err)
8794 goto out_err;
8795
8796 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8797 if (IS_ERR(rdev)) {
8798 err = PTR_ERR(rdev);
8799 goto out_err;
8800 }
8801 phy_idx = rdev->wiphy_idx;
8802
8803 if (attrbuf[NL80211_ATTR_TESTDATA])
8804 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8805 }
8806
8807 if (cb->args[1]) {
8808 data = nla_data((void *)cb->args[1]);
8809 data_len = nla_len((void *)cb->args[1]);
8810 }
8811
8812 if (!rdev->ops->testmode_dump) {
8813 err = -EOPNOTSUPP;
8814 goto out_err;
8815 }
8816
8817 while (1) {
8818 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8819 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8820 NL80211_CMD_TESTMODE);
8821 struct nlattr *tmdata;
8822
8823 if (!hdr)
8824 break;
8825
8826 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8827 genlmsg_cancel(skb, hdr);
8828 break;
8829 }
8830
8831 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8832 if (!tmdata) {
8833 genlmsg_cancel(skb, hdr);
8834 break;
8835 }
8836 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8837 nla_nest_end(skb, tmdata);
8838
8839 if (err == -ENOBUFS || err == -ENOENT) {
8840 genlmsg_cancel(skb, hdr);
8841 break;
8842 } else if (err) {
8843 genlmsg_cancel(skb, hdr);
8844 goto out_err;
8845 }
8846
8847 genlmsg_end(skb, hdr);
8848 }
8849
8850 err = skb->len;
8851 /* see above */
8852 cb->args[0] = phy_idx + 1;
8853 out_err:
8854 rtnl_unlock();
8855 return err;
8856 }
8857 #endif
8858
8859 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8860 {
8861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8862 struct net_device *dev = info->user_ptr[1];
8863 struct cfg80211_connect_params connect;
8864 struct wiphy *wiphy;
8865 struct cfg80211_cached_keys *connkeys = NULL;
8866 int err;
8867
8868 memset(&connect, 0, sizeof(connect));
8869
8870 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8871 return -EINVAL;
8872
8873 if (!info->attrs[NL80211_ATTR_SSID] ||
8874 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8875 return -EINVAL;
8876
8877 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8878 connect.auth_type =
8879 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8880 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8881 NL80211_CMD_CONNECT))
8882 return -EINVAL;
8883 } else
8884 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8885
8886 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8887
8888 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8889 !wiphy_ext_feature_isset(&rdev->wiphy,
8890 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8891 return -EINVAL;
8892 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8893
8894 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8895 NL80211_MAX_NR_CIPHER_SUITES);
8896 if (err)
8897 return err;
8898
8899 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8900 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8901 return -EOPNOTSUPP;
8902
8903 wiphy = &rdev->wiphy;
8904
8905 connect.bg_scan_period = -1;
8906 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8907 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8908 connect.bg_scan_period =
8909 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8910 }
8911
8912 if (info->attrs[NL80211_ATTR_MAC])
8913 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8914 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8915 connect.bssid_hint =
8916 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8917 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8918 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8919
8920 if (info->attrs[NL80211_ATTR_IE]) {
8921 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8922 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8923 }
8924
8925 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8926 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8927 if (connect.mfp != NL80211_MFP_REQUIRED &&
8928 connect.mfp != NL80211_MFP_NO)
8929 return -EINVAL;
8930 } else {
8931 connect.mfp = NL80211_MFP_NO;
8932 }
8933
8934 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8935 connect.prev_bssid =
8936 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8937
8938 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8939 connect.channel = nl80211_get_valid_chan(
8940 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8941 if (!connect.channel)
8942 return -EINVAL;
8943 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8944 connect.channel_hint = nl80211_get_valid_chan(
8945 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8946 if (!connect.channel_hint)
8947 return -EINVAL;
8948 }
8949
8950 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8951 connkeys = nl80211_parse_connkeys(rdev,
8952 info->attrs[NL80211_ATTR_KEYS], NULL);
8953 if (IS_ERR(connkeys))
8954 return PTR_ERR(connkeys);
8955 }
8956
8957 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8958 connect.flags |= ASSOC_REQ_DISABLE_HT;
8959
8960 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8961 memcpy(&connect.ht_capa_mask,
8962 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8963 sizeof(connect.ht_capa_mask));
8964
8965 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8966 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8967 kzfree(connkeys);
8968 return -EINVAL;
8969 }
8970 memcpy(&connect.ht_capa,
8971 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8972 sizeof(connect.ht_capa));
8973 }
8974
8975 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8976 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8977
8978 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8979 memcpy(&connect.vht_capa_mask,
8980 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8981 sizeof(connect.vht_capa_mask));
8982
8983 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8984 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8985 kzfree(connkeys);
8986 return -EINVAL;
8987 }
8988 memcpy(&connect.vht_capa,
8989 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8990 sizeof(connect.vht_capa));
8991 }
8992
8993 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8994 if (!((rdev->wiphy.features &
8995 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8996 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8997 !wiphy_ext_feature_isset(&rdev->wiphy,
8998 NL80211_EXT_FEATURE_RRM)) {
8999 kzfree(connkeys);
9000 return -EINVAL;
9001 }
9002 connect.flags |= ASSOC_REQ_USE_RRM;
9003 }
9004
9005 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9006 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9007 kzfree(connkeys);
9008 return -EOPNOTSUPP;
9009 }
9010
9011 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9012 /* bss selection makes no sense if bssid is set */
9013 if (connect.bssid) {
9014 kzfree(connkeys);
9015 return -EINVAL;
9016 }
9017
9018 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9019 wiphy, &connect.bss_select);
9020 if (err) {
9021 kzfree(connkeys);
9022 return err;
9023 }
9024 }
9025
9026 if (wiphy_ext_feature_isset(&rdev->wiphy,
9027 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9028 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9029 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9030 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9031 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9032 connect.fils_erp_username =
9033 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9034 connect.fils_erp_username_len =
9035 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9036 connect.fils_erp_realm =
9037 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9038 connect.fils_erp_realm_len =
9039 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9040 connect.fils_erp_next_seq_num =
9041 nla_get_u16(
9042 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9043 connect.fils_erp_rrk =
9044 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9045 connect.fils_erp_rrk_len =
9046 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9047 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9048 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9049 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9050 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9051 kzfree(connkeys);
9052 return -EINVAL;
9053 }
9054
9055 wdev_lock(dev->ieee80211_ptr);
9056
9057 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9058 connect.prev_bssid);
9059 if (err)
9060 kzfree(connkeys);
9061
9062 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9063 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9064 if (connect.bssid)
9065 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9066 connect.bssid, ETH_ALEN);
9067 else
9068 memset(dev->ieee80211_ptr->disconnect_bssid,
9069 0, ETH_ALEN);
9070 }
9071
9072 wdev_unlock(dev->ieee80211_ptr);
9073
9074 return err;
9075 }
9076
9077 static int nl80211_update_connect_params(struct sk_buff *skb,
9078 struct genl_info *info)
9079 {
9080 struct cfg80211_connect_params connect = {};
9081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9082 struct net_device *dev = info->user_ptr[1];
9083 struct wireless_dev *wdev = dev->ieee80211_ptr;
9084 u32 changed = 0;
9085 int ret;
9086
9087 if (!rdev->ops->update_connect_params)
9088 return -EOPNOTSUPP;
9089
9090 if (info->attrs[NL80211_ATTR_IE]) {
9091 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9092 return -EINVAL;
9093 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9094 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9095 changed |= UPDATE_ASSOC_IES;
9096 }
9097
9098 wdev_lock(dev->ieee80211_ptr);
9099 if (!wdev->current_bss)
9100 ret = -ENOLINK;
9101 else
9102 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9103 wdev_unlock(dev->ieee80211_ptr);
9104
9105 return ret;
9106 }
9107
9108 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9109 {
9110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9111 struct net_device *dev = info->user_ptr[1];
9112 u16 reason;
9113 int ret;
9114
9115 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9116 reason = WLAN_REASON_DEAUTH_LEAVING;
9117 else
9118 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9119
9120 if (reason == 0)
9121 return -EINVAL;
9122
9123 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9124 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9125 return -EOPNOTSUPP;
9126
9127 wdev_lock(dev->ieee80211_ptr);
9128 ret = cfg80211_disconnect(rdev, dev, reason, true);
9129 wdev_unlock(dev->ieee80211_ptr);
9130 return ret;
9131 }
9132
9133 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9134 {
9135 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9136 struct net *net;
9137 int err;
9138
9139 if (info->attrs[NL80211_ATTR_PID]) {
9140 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9141
9142 net = get_net_ns_by_pid(pid);
9143 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9144 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9145
9146 net = get_net_ns_by_fd(fd);
9147 } else {
9148 return -EINVAL;
9149 }
9150
9151 if (IS_ERR(net))
9152 return PTR_ERR(net);
9153
9154 err = 0;
9155
9156 /* check if anything to do */
9157 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9158 err = cfg80211_switch_netns(rdev, net);
9159
9160 put_net(net);
9161 return err;
9162 }
9163
9164 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9165 {
9166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9167 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9168 struct cfg80211_pmksa *pmksa) = NULL;
9169 struct net_device *dev = info->user_ptr[1];
9170 struct cfg80211_pmksa pmksa;
9171
9172 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9173
9174 if (!info->attrs[NL80211_ATTR_PMKID])
9175 return -EINVAL;
9176
9177 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9178
9179 if (info->attrs[NL80211_ATTR_MAC]) {
9180 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9181 } else if (info->attrs[NL80211_ATTR_SSID] &&
9182 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9183 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9184 info->attrs[NL80211_ATTR_PMK])) {
9185 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9186 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9187 pmksa.cache_id =
9188 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9189 } else {
9190 return -EINVAL;
9191 }
9192 if (info->attrs[NL80211_ATTR_PMK]) {
9193 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9194 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9195 }
9196
9197 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9198 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9199 return -EOPNOTSUPP;
9200
9201 switch (info->genlhdr->cmd) {
9202 case NL80211_CMD_SET_PMKSA:
9203 rdev_ops = rdev->ops->set_pmksa;
9204 break;
9205 case NL80211_CMD_DEL_PMKSA:
9206 rdev_ops = rdev->ops->del_pmksa;
9207 break;
9208 default:
9209 WARN_ON(1);
9210 break;
9211 }
9212
9213 if (!rdev_ops)
9214 return -EOPNOTSUPP;
9215
9216 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9217 }
9218
9219 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9220 {
9221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9222 struct net_device *dev = info->user_ptr[1];
9223
9224 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9225 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9226 return -EOPNOTSUPP;
9227
9228 if (!rdev->ops->flush_pmksa)
9229 return -EOPNOTSUPP;
9230
9231 return rdev_flush_pmksa(rdev, dev);
9232 }
9233
9234 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9235 {
9236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9237 struct net_device *dev = info->user_ptr[1];
9238 u8 action_code, dialog_token;
9239 u32 peer_capability = 0;
9240 u16 status_code;
9241 u8 *peer;
9242 bool initiator;
9243
9244 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9245 !rdev->ops->tdls_mgmt)
9246 return -EOPNOTSUPP;
9247
9248 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9249 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9250 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9251 !info->attrs[NL80211_ATTR_IE] ||
9252 !info->attrs[NL80211_ATTR_MAC])
9253 return -EINVAL;
9254
9255 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9256 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9257 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9258 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9259 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9260 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9261 peer_capability =
9262 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9263
9264 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9265 dialog_token, status_code, peer_capability,
9266 initiator,
9267 nla_data(info->attrs[NL80211_ATTR_IE]),
9268 nla_len(info->attrs[NL80211_ATTR_IE]));
9269 }
9270
9271 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9272 {
9273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9274 struct net_device *dev = info->user_ptr[1];
9275 enum nl80211_tdls_operation operation;
9276 u8 *peer;
9277
9278 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9279 !rdev->ops->tdls_oper)
9280 return -EOPNOTSUPP;
9281
9282 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9283 !info->attrs[NL80211_ATTR_MAC])
9284 return -EINVAL;
9285
9286 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9287 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9288
9289 return rdev_tdls_oper(rdev, dev, peer, operation);
9290 }
9291
9292 static int nl80211_remain_on_channel(struct sk_buff *skb,
9293 struct genl_info *info)
9294 {
9295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9296 struct wireless_dev *wdev = info->user_ptr[1];
9297 struct cfg80211_chan_def chandef;
9298 const struct cfg80211_chan_def *compat_chandef;
9299 struct sk_buff *msg;
9300 void *hdr;
9301 u64 cookie;
9302 u32 duration;
9303 int err;
9304
9305 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9306 !info->attrs[NL80211_ATTR_DURATION])
9307 return -EINVAL;
9308
9309 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9310
9311 if (!rdev->ops->remain_on_channel ||
9312 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9313 return -EOPNOTSUPP;
9314
9315 /*
9316 * We should be on that channel for at least a minimum amount of
9317 * time (10ms) but no longer than the driver supports.
9318 */
9319 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9320 duration > rdev->wiphy.max_remain_on_channel_duration)
9321 return -EINVAL;
9322
9323 err = nl80211_parse_chandef(rdev, info, &chandef);
9324 if (err)
9325 return err;
9326
9327 wdev_lock(wdev);
9328 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9329 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9330 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9331 &chandef);
9332 if (compat_chandef != &chandef) {
9333 wdev_unlock(wdev);
9334 return -EBUSY;
9335 }
9336 }
9337 wdev_unlock(wdev);
9338
9339 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9340 if (!msg)
9341 return -ENOMEM;
9342
9343 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9344 NL80211_CMD_REMAIN_ON_CHANNEL);
9345 if (!hdr) {
9346 err = -ENOBUFS;
9347 goto free_msg;
9348 }
9349
9350 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9351 duration, &cookie);
9352
9353 if (err)
9354 goto free_msg;
9355
9356 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9357 NL80211_ATTR_PAD))
9358 goto nla_put_failure;
9359
9360 genlmsg_end(msg, hdr);
9361
9362 return genlmsg_reply(msg, info);
9363
9364 nla_put_failure:
9365 err = -ENOBUFS;
9366 free_msg:
9367 nlmsg_free(msg);
9368 return err;
9369 }
9370
9371 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9372 struct genl_info *info)
9373 {
9374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9375 struct wireless_dev *wdev = info->user_ptr[1];
9376 u64 cookie;
9377
9378 if (!info->attrs[NL80211_ATTR_COOKIE])
9379 return -EINVAL;
9380
9381 if (!rdev->ops->cancel_remain_on_channel)
9382 return -EOPNOTSUPP;
9383
9384 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9385
9386 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9387 }
9388
9389 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9390 struct genl_info *info)
9391 {
9392 struct cfg80211_bitrate_mask mask;
9393 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9394 struct net_device *dev = info->user_ptr[1];
9395 int err;
9396
9397 if (!rdev->ops->set_bitrate_mask)
9398 return -EOPNOTSUPP;
9399
9400 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9401 if (err)
9402 return err;
9403
9404 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9405 }
9406
9407 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9408 {
9409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9410 struct wireless_dev *wdev = info->user_ptr[1];
9411 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9412
9413 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9414 return -EINVAL;
9415
9416 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9417 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9418
9419 switch (wdev->iftype) {
9420 case NL80211_IFTYPE_STATION:
9421 case NL80211_IFTYPE_ADHOC:
9422 case NL80211_IFTYPE_P2P_CLIENT:
9423 case NL80211_IFTYPE_AP:
9424 case NL80211_IFTYPE_AP_VLAN:
9425 case NL80211_IFTYPE_MESH_POINT:
9426 case NL80211_IFTYPE_P2P_GO:
9427 case NL80211_IFTYPE_P2P_DEVICE:
9428 break;
9429 case NL80211_IFTYPE_NAN:
9430 default:
9431 return -EOPNOTSUPP;
9432 }
9433
9434 /* not much point in registering if we can't reply */
9435 if (!rdev->ops->mgmt_tx)
9436 return -EOPNOTSUPP;
9437
9438 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9439 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9440 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9441 }
9442
9443 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9444 {
9445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9446 struct wireless_dev *wdev = info->user_ptr[1];
9447 struct cfg80211_chan_def chandef;
9448 int err;
9449 void *hdr = NULL;
9450 u64 cookie;
9451 struct sk_buff *msg = NULL;
9452 struct cfg80211_mgmt_tx_params params = {
9453 .dont_wait_for_ack =
9454 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9455 };
9456
9457 if (!info->attrs[NL80211_ATTR_FRAME])
9458 return -EINVAL;
9459
9460 if (!rdev->ops->mgmt_tx)
9461 return -EOPNOTSUPP;
9462
9463 switch (wdev->iftype) {
9464 case NL80211_IFTYPE_P2P_DEVICE:
9465 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9466 return -EINVAL;
9467 case NL80211_IFTYPE_STATION:
9468 case NL80211_IFTYPE_ADHOC:
9469 case NL80211_IFTYPE_P2P_CLIENT:
9470 case NL80211_IFTYPE_AP:
9471 case NL80211_IFTYPE_AP_VLAN:
9472 case NL80211_IFTYPE_MESH_POINT:
9473 case NL80211_IFTYPE_P2P_GO:
9474 break;
9475 case NL80211_IFTYPE_NAN:
9476 default:
9477 return -EOPNOTSUPP;
9478 }
9479
9480 if (info->attrs[NL80211_ATTR_DURATION]) {
9481 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9482 return -EINVAL;
9483 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9484
9485 /*
9486 * We should wait on the channel for at least a minimum amount
9487 * of time (10ms) but no longer than the driver supports.
9488 */
9489 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9490 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9491 return -EINVAL;
9492 }
9493
9494 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9495
9496 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9497 return -EINVAL;
9498
9499 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9500
9501 /* get the channel if any has been specified, otherwise pass NULL to
9502 * the driver. The latter will use the current one
9503 */
9504 chandef.chan = NULL;
9505 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9506 err = nl80211_parse_chandef(rdev, info, &chandef);
9507 if (err)
9508 return err;
9509 }
9510
9511 if (!chandef.chan && params.offchan)
9512 return -EINVAL;
9513
9514 wdev_lock(wdev);
9515 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9516 wdev_unlock(wdev);
9517 return -EBUSY;
9518 }
9519 wdev_unlock(wdev);
9520
9521 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9522 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9523
9524 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9525 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9526 int i;
9527
9528 if (len % sizeof(u16))
9529 return -EINVAL;
9530
9531 params.n_csa_offsets = len / sizeof(u16);
9532 params.csa_offsets =
9533 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9534
9535 /* check that all the offsets fit the frame */
9536 for (i = 0; i < params.n_csa_offsets; i++) {
9537 if (params.csa_offsets[i] >= params.len)
9538 return -EINVAL;
9539 }
9540 }
9541
9542 if (!params.dont_wait_for_ack) {
9543 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9544 if (!msg)
9545 return -ENOMEM;
9546
9547 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9548 NL80211_CMD_FRAME);
9549 if (!hdr) {
9550 err = -ENOBUFS;
9551 goto free_msg;
9552 }
9553 }
9554
9555 params.chan = chandef.chan;
9556 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9557 if (err)
9558 goto free_msg;
9559
9560 if (msg) {
9561 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9562 NL80211_ATTR_PAD))
9563 goto nla_put_failure;
9564
9565 genlmsg_end(msg, hdr);
9566 return genlmsg_reply(msg, info);
9567 }
9568
9569 return 0;
9570
9571 nla_put_failure:
9572 err = -ENOBUFS;
9573 free_msg:
9574 nlmsg_free(msg);
9575 return err;
9576 }
9577
9578 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9579 {
9580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9581 struct wireless_dev *wdev = info->user_ptr[1];
9582 u64 cookie;
9583
9584 if (!info->attrs[NL80211_ATTR_COOKIE])
9585 return -EINVAL;
9586
9587 if (!rdev->ops->mgmt_tx_cancel_wait)
9588 return -EOPNOTSUPP;
9589
9590 switch (wdev->iftype) {
9591 case NL80211_IFTYPE_STATION:
9592 case NL80211_IFTYPE_ADHOC:
9593 case NL80211_IFTYPE_P2P_CLIENT:
9594 case NL80211_IFTYPE_AP:
9595 case NL80211_IFTYPE_AP_VLAN:
9596 case NL80211_IFTYPE_P2P_GO:
9597 case NL80211_IFTYPE_P2P_DEVICE:
9598 break;
9599 case NL80211_IFTYPE_NAN:
9600 default:
9601 return -EOPNOTSUPP;
9602 }
9603
9604 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9605
9606 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9607 }
9608
9609 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9610 {
9611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9612 struct wireless_dev *wdev;
9613 struct net_device *dev = info->user_ptr[1];
9614 u8 ps_state;
9615 bool state;
9616 int err;
9617
9618 if (!info->attrs[NL80211_ATTR_PS_STATE])
9619 return -EINVAL;
9620
9621 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9622
9623 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9624 return -EINVAL;
9625
9626 wdev = dev->ieee80211_ptr;
9627
9628 if (!rdev->ops->set_power_mgmt)
9629 return -EOPNOTSUPP;
9630
9631 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9632
9633 if (state == wdev->ps)
9634 return 0;
9635
9636 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9637 if (!err)
9638 wdev->ps = state;
9639 return err;
9640 }
9641
9642 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9643 {
9644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9645 enum nl80211_ps_state ps_state;
9646 struct wireless_dev *wdev;
9647 struct net_device *dev = info->user_ptr[1];
9648 struct sk_buff *msg;
9649 void *hdr;
9650 int err;
9651
9652 wdev = dev->ieee80211_ptr;
9653
9654 if (!rdev->ops->set_power_mgmt)
9655 return -EOPNOTSUPP;
9656
9657 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9658 if (!msg)
9659 return -ENOMEM;
9660
9661 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9662 NL80211_CMD_GET_POWER_SAVE);
9663 if (!hdr) {
9664 err = -ENOBUFS;
9665 goto free_msg;
9666 }
9667
9668 if (wdev->ps)
9669 ps_state = NL80211_PS_ENABLED;
9670 else
9671 ps_state = NL80211_PS_DISABLED;
9672
9673 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9674 goto nla_put_failure;
9675
9676 genlmsg_end(msg, hdr);
9677 return genlmsg_reply(msg, info);
9678
9679 nla_put_failure:
9680 err = -ENOBUFS;
9681 free_msg:
9682 nlmsg_free(msg);
9683 return err;
9684 }
9685
9686 static const struct nla_policy
9687 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9688 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9689 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9690 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9691 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9692 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9693 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9694 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9695 };
9696
9697 static int nl80211_set_cqm_txe(struct genl_info *info,
9698 u32 rate, u32 pkts, u32 intvl)
9699 {
9700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9701 struct net_device *dev = info->user_ptr[1];
9702 struct wireless_dev *wdev = dev->ieee80211_ptr;
9703
9704 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9705 return -EINVAL;
9706
9707 if (!rdev->ops->set_cqm_txe_config)
9708 return -EOPNOTSUPP;
9709
9710 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9711 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9712 return -EOPNOTSUPP;
9713
9714 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9715 }
9716
9717 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9718 struct net_device *dev)
9719 {
9720 struct wireless_dev *wdev = dev->ieee80211_ptr;
9721 s32 last, low, high;
9722 u32 hyst;
9723 int i, n;
9724 int err;
9725
9726 /* RSSI reporting disabled? */
9727 if (!wdev->cqm_config)
9728 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9729
9730 /*
9731 * Obtain current RSSI value if possible, if not and no RSSI threshold
9732 * event has been received yet, we should receive an event after a
9733 * connection is established and enough beacons received to calculate
9734 * the average.
9735 */
9736 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9737 rdev->ops->get_station) {
9738 struct station_info sinfo;
9739 u8 *mac_addr;
9740
9741 mac_addr = wdev->current_bss->pub.bssid;
9742
9743 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9744 if (err)
9745 return err;
9746
9747 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9748 wdev->cqm_config->last_rssi_event_value =
9749 (s8) sinfo.rx_beacon_signal_avg;
9750 }
9751
9752 last = wdev->cqm_config->last_rssi_event_value;
9753 hyst = wdev->cqm_config->rssi_hyst;
9754 n = wdev->cqm_config->n_rssi_thresholds;
9755
9756 for (i = 0; i < n; i++)
9757 if (last < wdev->cqm_config->rssi_thresholds[i])
9758 break;
9759
9760 low = i > 0 ?
9761 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9762 high = i < n ?
9763 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9764
9765 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9766 }
9767
9768 static int nl80211_set_cqm_rssi(struct genl_info *info,
9769 const s32 *thresholds, int n_thresholds,
9770 u32 hysteresis)
9771 {
9772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9773 struct net_device *dev = info->user_ptr[1];
9774 struct wireless_dev *wdev = dev->ieee80211_ptr;
9775 int i, err;
9776 s32 prev = S32_MIN;
9777
9778 /* Check all values negative and sorted */
9779 for (i = 0; i < n_thresholds; i++) {
9780 if (thresholds[i] > 0 || thresholds[i] <= prev)
9781 return -EINVAL;
9782
9783 prev = thresholds[i];
9784 }
9785
9786 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9787 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9788 return -EOPNOTSUPP;
9789
9790 wdev_lock(wdev);
9791 cfg80211_cqm_config_free(wdev);
9792 wdev_unlock(wdev);
9793
9794 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9795 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9796 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9797
9798 return rdev_set_cqm_rssi_config(rdev, dev,
9799 thresholds[0], hysteresis);
9800 }
9801
9802 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9803 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9804 return -EOPNOTSUPP;
9805
9806 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9807 n_thresholds = 0;
9808
9809 wdev_lock(wdev);
9810 if (n_thresholds) {
9811 struct cfg80211_cqm_config *cqm_config;
9812
9813 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9814 n_thresholds * sizeof(s32), GFP_KERNEL);
9815 if (!cqm_config) {
9816 err = -ENOMEM;
9817 goto unlock;
9818 }
9819
9820 cqm_config->rssi_hyst = hysteresis;
9821 cqm_config->n_rssi_thresholds = n_thresholds;
9822 memcpy(cqm_config->rssi_thresholds, thresholds,
9823 n_thresholds * sizeof(s32));
9824
9825 wdev->cqm_config = cqm_config;
9826 }
9827
9828 err = cfg80211_cqm_rssi_update(rdev, dev);
9829
9830 unlock:
9831 wdev_unlock(wdev);
9832
9833 return err;
9834 }
9835
9836 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9837 {
9838 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9839 struct nlattr *cqm;
9840 int err;
9841
9842 cqm = info->attrs[NL80211_ATTR_CQM];
9843 if (!cqm)
9844 return -EINVAL;
9845
9846 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9847 nl80211_attr_cqm_policy, info->extack);
9848 if (err)
9849 return err;
9850
9851 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9852 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9853 const s32 *thresholds =
9854 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9855 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9856 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9857
9858 if (len % 4)
9859 return -EINVAL;
9860
9861 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9862 hysteresis);
9863 }
9864
9865 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9866 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9867 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9868 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9869 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9870 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9871
9872 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9873 }
9874
9875 return -EINVAL;
9876 }
9877
9878 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9879 {
9880 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9881 struct net_device *dev = info->user_ptr[1];
9882 struct ocb_setup setup = {};
9883 int err;
9884
9885 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9886 if (err)
9887 return err;
9888
9889 return cfg80211_join_ocb(rdev, dev, &setup);
9890 }
9891
9892 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9893 {
9894 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9895 struct net_device *dev = info->user_ptr[1];
9896
9897 return cfg80211_leave_ocb(rdev, dev);
9898 }
9899
9900 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9901 {
9902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9903 struct net_device *dev = info->user_ptr[1];
9904 struct mesh_config cfg;
9905 struct mesh_setup setup;
9906 int err;
9907
9908 /* start with default */
9909 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9910 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9911
9912 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9913 /* and parse parameters if given */
9914 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9915 if (err)
9916 return err;
9917 }
9918
9919 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9920 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9921 return -EINVAL;
9922
9923 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9924 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9925
9926 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9927 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9928 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9929 return -EINVAL;
9930
9931 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9932 setup.beacon_interval =
9933 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9934
9935 err = cfg80211_validate_beacon_int(rdev,
9936 NL80211_IFTYPE_MESH_POINT,
9937 setup.beacon_interval);
9938 if (err)
9939 return err;
9940 }
9941
9942 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9943 setup.dtim_period =
9944 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9945 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9946 return -EINVAL;
9947 }
9948
9949 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9950 /* parse additional setup parameters if given */
9951 err = nl80211_parse_mesh_setup(info, &setup);
9952 if (err)
9953 return err;
9954 }
9955
9956 if (setup.user_mpm)
9957 cfg.auto_open_plinks = false;
9958
9959 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9960 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9961 if (err)
9962 return err;
9963 } else {
9964 /* cfg80211_join_mesh() will sort it out */
9965 setup.chandef.chan = NULL;
9966 }
9967
9968 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9969 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9970 int n_rates =
9971 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9972 struct ieee80211_supported_band *sband;
9973
9974 if (!setup.chandef.chan)
9975 return -EINVAL;
9976
9977 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9978
9979 err = ieee80211_get_ratemask(sband, rates, n_rates,
9980 &setup.basic_rates);
9981 if (err)
9982 return err;
9983 }
9984
9985 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9986 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9987 if (err)
9988 return err;
9989
9990 if (!setup.chandef.chan)
9991 return -EINVAL;
9992
9993 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9994 &setup.beacon_rate);
9995 if (err)
9996 return err;
9997 }
9998
9999 setup.userspace_handles_dfs =
10000 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10001
10002 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10003 }
10004
10005 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10006 {
10007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10008 struct net_device *dev = info->user_ptr[1];
10009
10010 return cfg80211_leave_mesh(rdev, dev);
10011 }
10012
10013 #ifdef CONFIG_PM
10014 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10015 struct cfg80211_registered_device *rdev)
10016 {
10017 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10018 struct nlattr *nl_pats, *nl_pat;
10019 int i, pat_len;
10020
10021 if (!wowlan->n_patterns)
10022 return 0;
10023
10024 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10025 if (!nl_pats)
10026 return -ENOBUFS;
10027
10028 for (i = 0; i < wowlan->n_patterns; i++) {
10029 nl_pat = nla_nest_start(msg, i + 1);
10030 if (!nl_pat)
10031 return -ENOBUFS;
10032 pat_len = wowlan->patterns[i].pattern_len;
10033 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10034 wowlan->patterns[i].mask) ||
10035 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10036 wowlan->patterns[i].pattern) ||
10037 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10038 wowlan->patterns[i].pkt_offset))
10039 return -ENOBUFS;
10040 nla_nest_end(msg, nl_pat);
10041 }
10042 nla_nest_end(msg, nl_pats);
10043
10044 return 0;
10045 }
10046
10047 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10048 struct cfg80211_wowlan_tcp *tcp)
10049 {
10050 struct nlattr *nl_tcp;
10051
10052 if (!tcp)
10053 return 0;
10054
10055 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10056 if (!nl_tcp)
10057 return -ENOBUFS;
10058
10059 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10060 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10061 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10062 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10063 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10064 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10065 tcp->payload_len, tcp->payload) ||
10066 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10067 tcp->data_interval) ||
10068 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10069 tcp->wake_len, tcp->wake_data) ||
10070 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10071 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10072 return -ENOBUFS;
10073
10074 if (tcp->payload_seq.len &&
10075 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10076 sizeof(tcp->payload_seq), &tcp->payload_seq))
10077 return -ENOBUFS;
10078
10079 if (tcp->payload_tok.len &&
10080 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10081 sizeof(tcp->payload_tok) + tcp->tokens_size,
10082 &tcp->payload_tok))
10083 return -ENOBUFS;
10084
10085 nla_nest_end(msg, nl_tcp);
10086
10087 return 0;
10088 }
10089
10090 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10091 struct cfg80211_sched_scan_request *req)
10092 {
10093 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10094 int i;
10095
10096 if (!req)
10097 return 0;
10098
10099 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10100 if (!nd)
10101 return -ENOBUFS;
10102
10103 if (req->n_scan_plans == 1 &&
10104 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10105 req->scan_plans[0].interval * 1000))
10106 return -ENOBUFS;
10107
10108 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10109 return -ENOBUFS;
10110
10111 if (req->relative_rssi_set) {
10112 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10113
10114 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10115 req->relative_rssi))
10116 return -ENOBUFS;
10117
10118 rssi_adjust.band = req->rssi_adjust.band;
10119 rssi_adjust.delta = req->rssi_adjust.delta;
10120 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10121 sizeof(rssi_adjust), &rssi_adjust))
10122 return -ENOBUFS;
10123 }
10124
10125 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10126 if (!freqs)
10127 return -ENOBUFS;
10128
10129 for (i = 0; i < req->n_channels; i++) {
10130 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10131 return -ENOBUFS;
10132 }
10133
10134 nla_nest_end(msg, freqs);
10135
10136 if (req->n_match_sets) {
10137 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10138 if (!matches)
10139 return -ENOBUFS;
10140
10141 for (i = 0; i < req->n_match_sets; i++) {
10142 match = nla_nest_start(msg, i);
10143 if (!match)
10144 return -ENOBUFS;
10145
10146 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10147 req->match_sets[i].ssid.ssid_len,
10148 req->match_sets[i].ssid.ssid))
10149 return -ENOBUFS;
10150 nla_nest_end(msg, match);
10151 }
10152 nla_nest_end(msg, matches);
10153 }
10154
10155 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10156 if (!scan_plans)
10157 return -ENOBUFS;
10158
10159 for (i = 0; i < req->n_scan_plans; i++) {
10160 scan_plan = nla_nest_start(msg, i + 1);
10161 if (!scan_plan)
10162 return -ENOBUFS;
10163
10164 if (!scan_plan ||
10165 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10166 req->scan_plans[i].interval) ||
10167 (req->scan_plans[i].iterations &&
10168 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10169 req->scan_plans[i].iterations)))
10170 return -ENOBUFS;
10171 nla_nest_end(msg, scan_plan);
10172 }
10173 nla_nest_end(msg, scan_plans);
10174
10175 nla_nest_end(msg, nd);
10176
10177 return 0;
10178 }
10179
10180 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10181 {
10182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10183 struct sk_buff *msg;
10184 void *hdr;
10185 u32 size = NLMSG_DEFAULT_SIZE;
10186
10187 if (!rdev->wiphy.wowlan)
10188 return -EOPNOTSUPP;
10189
10190 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10191 /* adjust size to have room for all the data */
10192 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10193 rdev->wiphy.wowlan_config->tcp->payload_len +
10194 rdev->wiphy.wowlan_config->tcp->wake_len +
10195 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10196 }
10197
10198 msg = nlmsg_new(size, GFP_KERNEL);
10199 if (!msg)
10200 return -ENOMEM;
10201
10202 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10203 NL80211_CMD_GET_WOWLAN);
10204 if (!hdr)
10205 goto nla_put_failure;
10206
10207 if (rdev->wiphy.wowlan_config) {
10208 struct nlattr *nl_wowlan;
10209
10210 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10211 if (!nl_wowlan)
10212 goto nla_put_failure;
10213
10214 if ((rdev->wiphy.wowlan_config->any &&
10215 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10216 (rdev->wiphy.wowlan_config->disconnect &&
10217 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10218 (rdev->wiphy.wowlan_config->magic_pkt &&
10219 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10220 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10221 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10222 (rdev->wiphy.wowlan_config->eap_identity_req &&
10223 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10224 (rdev->wiphy.wowlan_config->four_way_handshake &&
10225 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10226 (rdev->wiphy.wowlan_config->rfkill_release &&
10227 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10228 goto nla_put_failure;
10229
10230 if (nl80211_send_wowlan_patterns(msg, rdev))
10231 goto nla_put_failure;
10232
10233 if (nl80211_send_wowlan_tcp(msg,
10234 rdev->wiphy.wowlan_config->tcp))
10235 goto nla_put_failure;
10236
10237 if (nl80211_send_wowlan_nd(
10238 msg,
10239 rdev->wiphy.wowlan_config->nd_config))
10240 goto nla_put_failure;
10241
10242 nla_nest_end(msg, nl_wowlan);
10243 }
10244
10245 genlmsg_end(msg, hdr);
10246 return genlmsg_reply(msg, info);
10247
10248 nla_put_failure:
10249 nlmsg_free(msg);
10250 return -ENOBUFS;
10251 }
10252
10253 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10254 struct nlattr *attr,
10255 struct cfg80211_wowlan *trig)
10256 {
10257 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10258 struct cfg80211_wowlan_tcp *cfg;
10259 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10260 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10261 u32 size;
10262 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10263 int err, port;
10264
10265 if (!rdev->wiphy.wowlan->tcp)
10266 return -EINVAL;
10267
10268 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10269 nl80211_wowlan_tcp_policy, NULL);
10270 if (err)
10271 return err;
10272
10273 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10274 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10275 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10276 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10277 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10278 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10279 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10280 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10281 return -EINVAL;
10282
10283 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10284 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10285 return -EINVAL;
10286
10287 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10288 rdev->wiphy.wowlan->tcp->data_interval_max ||
10289 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10290 return -EINVAL;
10291
10292 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10293 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10294 return -EINVAL;
10295
10296 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10297 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10298 return -EINVAL;
10299
10300 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10301 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10302
10303 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10304 tokens_size = tokln - sizeof(*tok);
10305
10306 if (!tok->len || tokens_size % tok->len)
10307 return -EINVAL;
10308 if (!rdev->wiphy.wowlan->tcp->tok)
10309 return -EINVAL;
10310 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10311 return -EINVAL;
10312 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10313 return -EINVAL;
10314 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10315 return -EINVAL;
10316 if (tok->offset + tok->len > data_size)
10317 return -EINVAL;
10318 }
10319
10320 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10321 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10322 if (!rdev->wiphy.wowlan->tcp->seq)
10323 return -EINVAL;
10324 if (seq->len == 0 || seq->len > 4)
10325 return -EINVAL;
10326 if (seq->len + seq->offset > data_size)
10327 return -EINVAL;
10328 }
10329
10330 size = sizeof(*cfg);
10331 size += data_size;
10332 size += wake_size + wake_mask_size;
10333 size += tokens_size;
10334
10335 cfg = kzalloc(size, GFP_KERNEL);
10336 if (!cfg)
10337 return -ENOMEM;
10338 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10339 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10340 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10341 ETH_ALEN);
10342 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10343 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10344 else
10345 port = 0;
10346 #ifdef CONFIG_INET
10347 /* allocate a socket and port for it and use it */
10348 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10349 IPPROTO_TCP, &cfg->sock, 1);
10350 if (err) {
10351 kfree(cfg);
10352 return err;
10353 }
10354 if (inet_csk_get_port(cfg->sock->sk, port)) {
10355 sock_release(cfg->sock);
10356 kfree(cfg);
10357 return -EADDRINUSE;
10358 }
10359 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10360 #else
10361 if (!port) {
10362 kfree(cfg);
10363 return -EINVAL;
10364 }
10365 cfg->src_port = port;
10366 #endif
10367
10368 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10369 cfg->payload_len = data_size;
10370 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10371 memcpy((void *)cfg->payload,
10372 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10373 data_size);
10374 if (seq)
10375 cfg->payload_seq = *seq;
10376 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10377 cfg->wake_len = wake_size;
10378 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10379 memcpy((void *)cfg->wake_data,
10380 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10381 wake_size);
10382 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10383 data_size + wake_size;
10384 memcpy((void *)cfg->wake_mask,
10385 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10386 wake_mask_size);
10387 if (tok) {
10388 cfg->tokens_size = tokens_size;
10389 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10390 }
10391
10392 trig->tcp = cfg;
10393
10394 return 0;
10395 }
10396
10397 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10398 const struct wiphy_wowlan_support *wowlan,
10399 struct nlattr *attr,
10400 struct cfg80211_wowlan *trig)
10401 {
10402 struct nlattr **tb;
10403 int err;
10404
10405 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10406 if (!tb)
10407 return -ENOMEM;
10408
10409 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10410 err = -EOPNOTSUPP;
10411 goto out;
10412 }
10413
10414 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10415 NULL);
10416 if (err)
10417 goto out;
10418
10419 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10420 wowlan->max_nd_match_sets);
10421 err = PTR_ERR_OR_ZERO(trig->nd_config);
10422 if (err)
10423 trig->nd_config = NULL;
10424
10425 out:
10426 kfree(tb);
10427 return err;
10428 }
10429
10430 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10431 {
10432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10433 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10434 struct cfg80211_wowlan new_triggers = {};
10435 struct cfg80211_wowlan *ntrig;
10436 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10437 int err, i;
10438 bool prev_enabled = rdev->wiphy.wowlan_config;
10439 bool regular = false;
10440
10441 if (!wowlan)
10442 return -EOPNOTSUPP;
10443
10444 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10445 cfg80211_rdev_free_wowlan(rdev);
10446 rdev->wiphy.wowlan_config = NULL;
10447 goto set_wakeup;
10448 }
10449
10450 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10451 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10452 nl80211_wowlan_policy, info->extack);
10453 if (err)
10454 return err;
10455
10456 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10457 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10458 return -EINVAL;
10459 new_triggers.any = true;
10460 }
10461
10462 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10463 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10464 return -EINVAL;
10465 new_triggers.disconnect = true;
10466 regular = true;
10467 }
10468
10469 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10470 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10471 return -EINVAL;
10472 new_triggers.magic_pkt = true;
10473 regular = true;
10474 }
10475
10476 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10477 return -EINVAL;
10478
10479 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10480 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10481 return -EINVAL;
10482 new_triggers.gtk_rekey_failure = true;
10483 regular = true;
10484 }
10485
10486 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10487 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10488 return -EINVAL;
10489 new_triggers.eap_identity_req = true;
10490 regular = true;
10491 }
10492
10493 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10494 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10495 return -EINVAL;
10496 new_triggers.four_way_handshake = true;
10497 regular = true;
10498 }
10499
10500 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10501 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10502 return -EINVAL;
10503 new_triggers.rfkill_release = true;
10504 regular = true;
10505 }
10506
10507 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10508 struct nlattr *pat;
10509 int n_patterns = 0;
10510 int rem, pat_len, mask_len, pkt_offset;
10511 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10512
10513 regular = true;
10514
10515 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10516 rem)
10517 n_patterns++;
10518 if (n_patterns > wowlan->n_patterns)
10519 return -EINVAL;
10520
10521 new_triggers.patterns = kcalloc(n_patterns,
10522 sizeof(new_triggers.patterns[0]),
10523 GFP_KERNEL);
10524 if (!new_triggers.patterns)
10525 return -ENOMEM;
10526
10527 new_triggers.n_patterns = n_patterns;
10528 i = 0;
10529
10530 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10531 rem) {
10532 u8 *mask_pat;
10533
10534 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10535 NULL, info->extack);
10536 err = -EINVAL;
10537 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10538 !pat_tb[NL80211_PKTPAT_PATTERN])
10539 goto error;
10540 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10541 mask_len = DIV_ROUND_UP(pat_len, 8);
10542 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10543 goto error;
10544 if (pat_len > wowlan->pattern_max_len ||
10545 pat_len < wowlan->pattern_min_len)
10546 goto error;
10547
10548 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10549 pkt_offset = 0;
10550 else
10551 pkt_offset = nla_get_u32(
10552 pat_tb[NL80211_PKTPAT_OFFSET]);
10553 if (pkt_offset > wowlan->max_pkt_offset)
10554 goto error;
10555 new_triggers.patterns[i].pkt_offset = pkt_offset;
10556
10557 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10558 if (!mask_pat) {
10559 err = -ENOMEM;
10560 goto error;
10561 }
10562 new_triggers.patterns[i].mask = mask_pat;
10563 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10564 mask_len);
10565 mask_pat += mask_len;
10566 new_triggers.patterns[i].pattern = mask_pat;
10567 new_triggers.patterns[i].pattern_len = pat_len;
10568 memcpy(mask_pat,
10569 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10570 pat_len);
10571 i++;
10572 }
10573 }
10574
10575 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10576 regular = true;
10577 err = nl80211_parse_wowlan_tcp(
10578 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10579 &new_triggers);
10580 if (err)
10581 goto error;
10582 }
10583
10584 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10585 regular = true;
10586 err = nl80211_parse_wowlan_nd(
10587 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10588 &new_triggers);
10589 if (err)
10590 goto error;
10591 }
10592
10593 /* The 'any' trigger means the device continues operating more or less
10594 * as in its normal operation mode and wakes up the host on most of the
10595 * normal interrupts (like packet RX, ...)
10596 * It therefore makes little sense to combine with the more constrained
10597 * wakeup trigger modes.
10598 */
10599 if (new_triggers.any && regular) {
10600 err = -EINVAL;
10601 goto error;
10602 }
10603
10604 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10605 if (!ntrig) {
10606 err = -ENOMEM;
10607 goto error;
10608 }
10609 cfg80211_rdev_free_wowlan(rdev);
10610 rdev->wiphy.wowlan_config = ntrig;
10611
10612 set_wakeup:
10613 if (rdev->ops->set_wakeup &&
10614 prev_enabled != !!rdev->wiphy.wowlan_config)
10615 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10616
10617 return 0;
10618 error:
10619 for (i = 0; i < new_triggers.n_patterns; i++)
10620 kfree(new_triggers.patterns[i].mask);
10621 kfree(new_triggers.patterns);
10622 if (new_triggers.tcp && new_triggers.tcp->sock)
10623 sock_release(new_triggers.tcp->sock);
10624 kfree(new_triggers.tcp);
10625 kfree(new_triggers.nd_config);
10626 return err;
10627 }
10628 #endif
10629
10630 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10631 struct cfg80211_registered_device *rdev)
10632 {
10633 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10634 int i, j, pat_len;
10635 struct cfg80211_coalesce_rules *rule;
10636
10637 if (!rdev->coalesce->n_rules)
10638 return 0;
10639
10640 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10641 if (!nl_rules)
10642 return -ENOBUFS;
10643
10644 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10645 nl_rule = nla_nest_start(msg, i + 1);
10646 if (!nl_rule)
10647 return -ENOBUFS;
10648
10649 rule = &rdev->coalesce->rules[i];
10650 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10651 rule->delay))
10652 return -ENOBUFS;
10653
10654 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10655 rule->condition))
10656 return -ENOBUFS;
10657
10658 nl_pats = nla_nest_start(msg,
10659 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10660 if (!nl_pats)
10661 return -ENOBUFS;
10662
10663 for (j = 0; j < rule->n_patterns; j++) {
10664 nl_pat = nla_nest_start(msg, j + 1);
10665 if (!nl_pat)
10666 return -ENOBUFS;
10667 pat_len = rule->patterns[j].pattern_len;
10668 if (nla_put(msg, NL80211_PKTPAT_MASK,
10669 DIV_ROUND_UP(pat_len, 8),
10670 rule->patterns[j].mask) ||
10671 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10672 rule->patterns[j].pattern) ||
10673 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10674 rule->patterns[j].pkt_offset))
10675 return -ENOBUFS;
10676 nla_nest_end(msg, nl_pat);
10677 }
10678 nla_nest_end(msg, nl_pats);
10679 nla_nest_end(msg, nl_rule);
10680 }
10681 nla_nest_end(msg, nl_rules);
10682
10683 return 0;
10684 }
10685
10686 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10687 {
10688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10689 struct sk_buff *msg;
10690 void *hdr;
10691
10692 if (!rdev->wiphy.coalesce)
10693 return -EOPNOTSUPP;
10694
10695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10696 if (!msg)
10697 return -ENOMEM;
10698
10699 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10700 NL80211_CMD_GET_COALESCE);
10701 if (!hdr)
10702 goto nla_put_failure;
10703
10704 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10705 goto nla_put_failure;
10706
10707 genlmsg_end(msg, hdr);
10708 return genlmsg_reply(msg, info);
10709
10710 nla_put_failure:
10711 nlmsg_free(msg);
10712 return -ENOBUFS;
10713 }
10714
10715 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10716 {
10717 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10718 int i, j;
10719 struct cfg80211_coalesce_rules *rule;
10720
10721 if (!coalesce)
10722 return;
10723
10724 for (i = 0; i < coalesce->n_rules; i++) {
10725 rule = &coalesce->rules[i];
10726 for (j = 0; j < rule->n_patterns; j++)
10727 kfree(rule->patterns[j].mask);
10728 kfree(rule->patterns);
10729 }
10730 kfree(coalesce->rules);
10731 kfree(coalesce);
10732 rdev->coalesce = NULL;
10733 }
10734
10735 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10736 struct nlattr *rule,
10737 struct cfg80211_coalesce_rules *new_rule)
10738 {
10739 int err, i;
10740 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10741 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10742 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10743 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10744
10745 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10746 nl80211_coalesce_policy, NULL);
10747 if (err)
10748 return err;
10749
10750 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10751 new_rule->delay =
10752 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10753 if (new_rule->delay > coalesce->max_delay)
10754 return -EINVAL;
10755
10756 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10757 new_rule->condition =
10758 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10759 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10760 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10761 return -EINVAL;
10762
10763 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10764 return -EINVAL;
10765
10766 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10767 rem)
10768 n_patterns++;
10769 if (n_patterns > coalesce->n_patterns)
10770 return -EINVAL;
10771
10772 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10773 GFP_KERNEL);
10774 if (!new_rule->patterns)
10775 return -ENOMEM;
10776
10777 new_rule->n_patterns = n_patterns;
10778 i = 0;
10779
10780 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10781 rem) {
10782 u8 *mask_pat;
10783
10784 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL, NULL);
10785 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10786 !pat_tb[NL80211_PKTPAT_PATTERN])
10787 return -EINVAL;
10788 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10789 mask_len = DIV_ROUND_UP(pat_len, 8);
10790 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10791 return -EINVAL;
10792 if (pat_len > coalesce->pattern_max_len ||
10793 pat_len < coalesce->pattern_min_len)
10794 return -EINVAL;
10795
10796 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10797 pkt_offset = 0;
10798 else
10799 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10800 if (pkt_offset > coalesce->max_pkt_offset)
10801 return -EINVAL;
10802 new_rule->patterns[i].pkt_offset = pkt_offset;
10803
10804 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10805 if (!mask_pat)
10806 return -ENOMEM;
10807
10808 new_rule->patterns[i].mask = mask_pat;
10809 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10810 mask_len);
10811
10812 mask_pat += mask_len;
10813 new_rule->patterns[i].pattern = mask_pat;
10814 new_rule->patterns[i].pattern_len = pat_len;
10815 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10816 pat_len);
10817 i++;
10818 }
10819
10820 return 0;
10821 }
10822
10823 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10824 {
10825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10826 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10827 struct cfg80211_coalesce new_coalesce = {};
10828 struct cfg80211_coalesce *n_coalesce;
10829 int err, rem_rule, n_rules = 0, i, j;
10830 struct nlattr *rule;
10831 struct cfg80211_coalesce_rules *tmp_rule;
10832
10833 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10834 return -EOPNOTSUPP;
10835
10836 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10837 cfg80211_rdev_free_coalesce(rdev);
10838 rdev_set_coalesce(rdev, NULL);
10839 return 0;
10840 }
10841
10842 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10843 rem_rule)
10844 n_rules++;
10845 if (n_rules > coalesce->n_rules)
10846 return -EINVAL;
10847
10848 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10849 GFP_KERNEL);
10850 if (!new_coalesce.rules)
10851 return -ENOMEM;
10852
10853 new_coalesce.n_rules = n_rules;
10854 i = 0;
10855
10856 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10857 rem_rule) {
10858 err = nl80211_parse_coalesce_rule(rdev, rule,
10859 &new_coalesce.rules[i]);
10860 if (err)
10861 goto error;
10862
10863 i++;
10864 }
10865
10866 err = rdev_set_coalesce(rdev, &new_coalesce);
10867 if (err)
10868 goto error;
10869
10870 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10871 if (!n_coalesce) {
10872 err = -ENOMEM;
10873 goto error;
10874 }
10875 cfg80211_rdev_free_coalesce(rdev);
10876 rdev->coalesce = n_coalesce;
10877
10878 return 0;
10879 error:
10880 for (i = 0; i < new_coalesce.n_rules; i++) {
10881 tmp_rule = &new_coalesce.rules[i];
10882 for (j = 0; j < tmp_rule->n_patterns; j++)
10883 kfree(tmp_rule->patterns[j].mask);
10884 kfree(tmp_rule->patterns);
10885 }
10886 kfree(new_coalesce.rules);
10887
10888 return err;
10889 }
10890
10891 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10892 {
10893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10894 struct net_device *dev = info->user_ptr[1];
10895 struct wireless_dev *wdev = dev->ieee80211_ptr;
10896 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10897 struct cfg80211_gtk_rekey_data rekey_data;
10898 int err;
10899
10900 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10901 return -EINVAL;
10902
10903 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10904 info->attrs[NL80211_ATTR_REKEY_DATA],
10905 nl80211_rekey_policy, info->extack);
10906 if (err)
10907 return err;
10908
10909 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10910 !tb[NL80211_REKEY_DATA_KCK])
10911 return -EINVAL;
10912 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10913 return -ERANGE;
10914 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10915 return -ERANGE;
10916 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10917 return -ERANGE;
10918
10919 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10920 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10921 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10922
10923 wdev_lock(wdev);
10924 if (!wdev->current_bss) {
10925 err = -ENOTCONN;
10926 goto out;
10927 }
10928
10929 if (!rdev->ops->set_rekey_data) {
10930 err = -EOPNOTSUPP;
10931 goto out;
10932 }
10933
10934 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10935 out:
10936 wdev_unlock(wdev);
10937 return err;
10938 }
10939
10940 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10941 struct genl_info *info)
10942 {
10943 struct net_device *dev = info->user_ptr[1];
10944 struct wireless_dev *wdev = dev->ieee80211_ptr;
10945
10946 if (wdev->iftype != NL80211_IFTYPE_AP &&
10947 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10948 return -EINVAL;
10949
10950 if (wdev->ap_unexpected_nlportid)
10951 return -EBUSY;
10952
10953 wdev->ap_unexpected_nlportid = info->snd_portid;
10954 return 0;
10955 }
10956
10957 static int nl80211_probe_client(struct sk_buff *skb,
10958 struct genl_info *info)
10959 {
10960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10961 struct net_device *dev = info->user_ptr[1];
10962 struct wireless_dev *wdev = dev->ieee80211_ptr;
10963 struct sk_buff *msg;
10964 void *hdr;
10965 const u8 *addr;
10966 u64 cookie;
10967 int err;
10968
10969 if (wdev->iftype != NL80211_IFTYPE_AP &&
10970 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10971 return -EOPNOTSUPP;
10972
10973 if (!info->attrs[NL80211_ATTR_MAC])
10974 return -EINVAL;
10975
10976 if (!rdev->ops->probe_client)
10977 return -EOPNOTSUPP;
10978
10979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10980 if (!msg)
10981 return -ENOMEM;
10982
10983 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10984 NL80211_CMD_PROBE_CLIENT);
10985 if (!hdr) {
10986 err = -ENOBUFS;
10987 goto free_msg;
10988 }
10989
10990 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10991
10992 err = rdev_probe_client(rdev, dev, addr, &cookie);
10993 if (err)
10994 goto free_msg;
10995
10996 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10997 NL80211_ATTR_PAD))
10998 goto nla_put_failure;
10999
11000 genlmsg_end(msg, hdr);
11001
11002 return genlmsg_reply(msg, info);
11003
11004 nla_put_failure:
11005 err = -ENOBUFS;
11006 free_msg:
11007 nlmsg_free(msg);
11008 return err;
11009 }
11010
11011 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11012 {
11013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11014 struct cfg80211_beacon_registration *reg, *nreg;
11015 int rv;
11016
11017 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11018 return -EOPNOTSUPP;
11019
11020 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11021 if (!nreg)
11022 return -ENOMEM;
11023
11024 /* First, check if already registered. */
11025 spin_lock_bh(&rdev->beacon_registrations_lock);
11026 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11027 if (reg->nlportid == info->snd_portid) {
11028 rv = -EALREADY;
11029 goto out_err;
11030 }
11031 }
11032 /* Add it to the list */
11033 nreg->nlportid = info->snd_portid;
11034 list_add(&nreg->list, &rdev->beacon_registrations);
11035
11036 spin_unlock_bh(&rdev->beacon_registrations_lock);
11037
11038 return 0;
11039 out_err:
11040 spin_unlock_bh(&rdev->beacon_registrations_lock);
11041 kfree(nreg);
11042 return rv;
11043 }
11044
11045 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11046 {
11047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11048 struct wireless_dev *wdev = info->user_ptr[1];
11049 int err;
11050
11051 if (!rdev->ops->start_p2p_device)
11052 return -EOPNOTSUPP;
11053
11054 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11055 return -EOPNOTSUPP;
11056
11057 if (wdev_running(wdev))
11058 return 0;
11059
11060 if (rfkill_blocked(rdev->rfkill))
11061 return -ERFKILL;
11062
11063 err = rdev_start_p2p_device(rdev, wdev);
11064 if (err)
11065 return err;
11066
11067 wdev->is_running = true;
11068 rdev->opencount++;
11069
11070 return 0;
11071 }
11072
11073 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11074 {
11075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11076 struct wireless_dev *wdev = info->user_ptr[1];
11077
11078 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11079 return -EOPNOTSUPP;
11080
11081 if (!rdev->ops->stop_p2p_device)
11082 return -EOPNOTSUPP;
11083
11084 cfg80211_stop_p2p_device(rdev, wdev);
11085
11086 return 0;
11087 }
11088
11089 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11090 {
11091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11092 struct wireless_dev *wdev = info->user_ptr[1];
11093 struct cfg80211_nan_conf conf = {};
11094 int err;
11095
11096 if (wdev->iftype != NL80211_IFTYPE_NAN)
11097 return -EOPNOTSUPP;
11098
11099 if (wdev_running(wdev))
11100 return -EEXIST;
11101
11102 if (rfkill_blocked(rdev->rfkill))
11103 return -ERFKILL;
11104
11105 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11106 return -EINVAL;
11107
11108 conf.master_pref =
11109 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11110 if (!conf.master_pref)
11111 return -EINVAL;
11112
11113 if (info->attrs[NL80211_ATTR_BANDS]) {
11114 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11115
11116 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11117 return -EOPNOTSUPP;
11118
11119 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11120 return -EINVAL;
11121
11122 conf.bands = bands;
11123 }
11124
11125 err = rdev_start_nan(rdev, wdev, &conf);
11126 if (err)
11127 return err;
11128
11129 wdev->is_running = true;
11130 rdev->opencount++;
11131
11132 return 0;
11133 }
11134
11135 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11136 {
11137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11138 struct wireless_dev *wdev = info->user_ptr[1];
11139
11140 if (wdev->iftype != NL80211_IFTYPE_NAN)
11141 return -EOPNOTSUPP;
11142
11143 cfg80211_stop_nan(rdev, wdev);
11144
11145 return 0;
11146 }
11147
11148 static int validate_nan_filter(struct nlattr *filter_attr)
11149 {
11150 struct nlattr *attr;
11151 int len = 0, n_entries = 0, rem;
11152
11153 nla_for_each_nested(attr, filter_attr, rem) {
11154 len += nla_len(attr);
11155 n_entries++;
11156 }
11157
11158 if (len >= U8_MAX)
11159 return -EINVAL;
11160
11161 return n_entries;
11162 }
11163
11164 static int handle_nan_filter(struct nlattr *attr_filter,
11165 struct cfg80211_nan_func *func,
11166 bool tx)
11167 {
11168 struct nlattr *attr;
11169 int n_entries, rem, i;
11170 struct cfg80211_nan_func_filter *filter;
11171
11172 n_entries = validate_nan_filter(attr_filter);
11173 if (n_entries < 0)
11174 return n_entries;
11175
11176 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11177
11178 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11179 if (!filter)
11180 return -ENOMEM;
11181
11182 i = 0;
11183 nla_for_each_nested(attr, attr_filter, rem) {
11184 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11185 filter[i].len = nla_len(attr);
11186 i++;
11187 }
11188 if (tx) {
11189 func->num_tx_filters = n_entries;
11190 func->tx_filters = filter;
11191 } else {
11192 func->num_rx_filters = n_entries;
11193 func->rx_filters = filter;
11194 }
11195
11196 return 0;
11197 }
11198
11199 static int nl80211_nan_add_func(struct sk_buff *skb,
11200 struct genl_info *info)
11201 {
11202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11203 struct wireless_dev *wdev = info->user_ptr[1];
11204 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11205 struct cfg80211_nan_func *func;
11206 struct sk_buff *msg = NULL;
11207 void *hdr = NULL;
11208 int err = 0;
11209
11210 if (wdev->iftype != NL80211_IFTYPE_NAN)
11211 return -EOPNOTSUPP;
11212
11213 if (!wdev_running(wdev))
11214 return -ENOTCONN;
11215
11216 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11217 return -EINVAL;
11218
11219 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11220 info->attrs[NL80211_ATTR_NAN_FUNC],
11221 nl80211_nan_func_policy, info->extack);
11222 if (err)
11223 return err;
11224
11225 func = kzalloc(sizeof(*func), GFP_KERNEL);
11226 if (!func)
11227 return -ENOMEM;
11228
11229 func->cookie = wdev->wiphy->cookie_counter++;
11230
11231 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11232 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11233 err = -EINVAL;
11234 goto out;
11235 }
11236
11237
11238 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11239
11240 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11241 err = -EINVAL;
11242 goto out;
11243 }
11244
11245 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11246 sizeof(func->service_id));
11247
11248 func->close_range =
11249 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11250
11251 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11252 func->serv_spec_info_len =
11253 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11254 func->serv_spec_info =
11255 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11256 func->serv_spec_info_len,
11257 GFP_KERNEL);
11258 if (!func->serv_spec_info) {
11259 err = -ENOMEM;
11260 goto out;
11261 }
11262 }
11263
11264 if (tb[NL80211_NAN_FUNC_TTL])
11265 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11266
11267 switch (func->type) {
11268 case NL80211_NAN_FUNC_PUBLISH:
11269 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11270 err = -EINVAL;
11271 goto out;
11272 }
11273
11274 func->publish_type =
11275 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11276 func->publish_bcast =
11277 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11278
11279 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11280 func->publish_bcast) {
11281 err = -EINVAL;
11282 goto out;
11283 }
11284 break;
11285 case NL80211_NAN_FUNC_SUBSCRIBE:
11286 func->subscribe_active =
11287 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11288 break;
11289 case NL80211_NAN_FUNC_FOLLOW_UP:
11290 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11291 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
11292 err = -EINVAL;
11293 goto out;
11294 }
11295
11296 func->followup_id =
11297 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11298 func->followup_reqid =
11299 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11300 memcpy(func->followup_dest.addr,
11301 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11302 sizeof(func->followup_dest.addr));
11303 if (func->ttl) {
11304 err = -EINVAL;
11305 goto out;
11306 }
11307 break;
11308 default:
11309 err = -EINVAL;
11310 goto out;
11311 }
11312
11313 if (tb[NL80211_NAN_FUNC_SRF]) {
11314 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11315
11316 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11317 tb[NL80211_NAN_FUNC_SRF],
11318 nl80211_nan_srf_policy, info->extack);
11319 if (err)
11320 goto out;
11321
11322 func->srf_include =
11323 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11324
11325 if (srf_tb[NL80211_NAN_SRF_BF]) {
11326 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11327 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11328 err = -EINVAL;
11329 goto out;
11330 }
11331
11332 func->srf_bf_len =
11333 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11334 func->srf_bf =
11335 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11336 func->srf_bf_len, GFP_KERNEL);
11337 if (!func->srf_bf) {
11338 err = -ENOMEM;
11339 goto out;
11340 }
11341
11342 func->srf_bf_idx =
11343 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11344 } else {
11345 struct nlattr *attr, *mac_attr =
11346 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11347 int n_entries, rem, i = 0;
11348
11349 if (!mac_attr) {
11350 err = -EINVAL;
11351 goto out;
11352 }
11353
11354 n_entries = validate_acl_mac_addrs(mac_attr);
11355 if (n_entries <= 0) {
11356 err = -EINVAL;
11357 goto out;
11358 }
11359
11360 func->srf_num_macs = n_entries;
11361 func->srf_macs =
11362 kzalloc(sizeof(*func->srf_macs) * n_entries,
11363 GFP_KERNEL);
11364 if (!func->srf_macs) {
11365 err = -ENOMEM;
11366 goto out;
11367 }
11368
11369 nla_for_each_nested(attr, mac_attr, rem)
11370 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11371 sizeof(*func->srf_macs));
11372 }
11373 }
11374
11375 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11376 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11377 func, true);
11378 if (err)
11379 goto out;
11380 }
11381
11382 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11383 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11384 func, false);
11385 if (err)
11386 goto out;
11387 }
11388
11389 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11390 if (!msg) {
11391 err = -ENOMEM;
11392 goto out;
11393 }
11394
11395 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11396 NL80211_CMD_ADD_NAN_FUNCTION);
11397 /* This can't really happen - we just allocated 4KB */
11398 if (WARN_ON(!hdr)) {
11399 err = -ENOMEM;
11400 goto out;
11401 }
11402
11403 err = rdev_add_nan_func(rdev, wdev, func);
11404 out:
11405 if (err < 0) {
11406 cfg80211_free_nan_func(func);
11407 nlmsg_free(msg);
11408 return err;
11409 }
11410
11411 /* propagate the instance id and cookie to userspace */
11412 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11413 NL80211_ATTR_PAD))
11414 goto nla_put_failure;
11415
11416 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11417 if (!func_attr)
11418 goto nla_put_failure;
11419
11420 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11421 func->instance_id))
11422 goto nla_put_failure;
11423
11424 nla_nest_end(msg, func_attr);
11425
11426 genlmsg_end(msg, hdr);
11427 return genlmsg_reply(msg, info);
11428
11429 nla_put_failure:
11430 nlmsg_free(msg);
11431 return -ENOBUFS;
11432 }
11433
11434 static int nl80211_nan_del_func(struct sk_buff *skb,
11435 struct genl_info *info)
11436 {
11437 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11438 struct wireless_dev *wdev = info->user_ptr[1];
11439 u64 cookie;
11440
11441 if (wdev->iftype != NL80211_IFTYPE_NAN)
11442 return -EOPNOTSUPP;
11443
11444 if (!wdev_running(wdev))
11445 return -ENOTCONN;
11446
11447 if (!info->attrs[NL80211_ATTR_COOKIE])
11448 return -EINVAL;
11449
11450 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11451
11452 rdev_del_nan_func(rdev, wdev, cookie);
11453
11454 return 0;
11455 }
11456
11457 static int nl80211_nan_change_config(struct sk_buff *skb,
11458 struct genl_info *info)
11459 {
11460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11461 struct wireless_dev *wdev = info->user_ptr[1];
11462 struct cfg80211_nan_conf conf = {};
11463 u32 changed = 0;
11464
11465 if (wdev->iftype != NL80211_IFTYPE_NAN)
11466 return -EOPNOTSUPP;
11467
11468 if (!wdev_running(wdev))
11469 return -ENOTCONN;
11470
11471 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11472 conf.master_pref =
11473 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11474 if (conf.master_pref <= 1 || conf.master_pref == 255)
11475 return -EINVAL;
11476
11477 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11478 }
11479
11480 if (info->attrs[NL80211_ATTR_BANDS]) {
11481 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11482
11483 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11484 return -EOPNOTSUPP;
11485
11486 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11487 return -EINVAL;
11488
11489 conf.bands = bands;
11490 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11491 }
11492
11493 if (!changed)
11494 return -EINVAL;
11495
11496 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11497 }
11498
11499 void cfg80211_nan_match(struct wireless_dev *wdev,
11500 struct cfg80211_nan_match_params *match, gfp_t gfp)
11501 {
11502 struct wiphy *wiphy = wdev->wiphy;
11503 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11504 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11505 struct sk_buff *msg;
11506 void *hdr;
11507
11508 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11509 return;
11510
11511 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11512 if (!msg)
11513 return;
11514
11515 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11516 if (!hdr) {
11517 nlmsg_free(msg);
11518 return;
11519 }
11520
11521 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11522 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11523 wdev->netdev->ifindex)) ||
11524 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11525 NL80211_ATTR_PAD))
11526 goto nla_put_failure;
11527
11528 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11529 NL80211_ATTR_PAD) ||
11530 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11531 goto nla_put_failure;
11532
11533 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11534 if (!match_attr)
11535 goto nla_put_failure;
11536
11537 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11538 if (!local_func_attr)
11539 goto nla_put_failure;
11540
11541 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11542 goto nla_put_failure;
11543
11544 nla_nest_end(msg, local_func_attr);
11545
11546 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11547 if (!peer_func_attr)
11548 goto nla_put_failure;
11549
11550 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11551 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11552 goto nla_put_failure;
11553
11554 if (match->info && match->info_len &&
11555 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11556 match->info))
11557 goto nla_put_failure;
11558
11559 nla_nest_end(msg, peer_func_attr);
11560 nla_nest_end(msg, match_attr);
11561 genlmsg_end(msg, hdr);
11562
11563 if (!wdev->owner_nlportid)
11564 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11565 msg, 0, NL80211_MCGRP_NAN, gfp);
11566 else
11567 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11568 wdev->owner_nlportid);
11569
11570 return;
11571
11572 nla_put_failure:
11573 nlmsg_free(msg);
11574 }
11575 EXPORT_SYMBOL(cfg80211_nan_match);
11576
11577 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11578 u8 inst_id,
11579 enum nl80211_nan_func_term_reason reason,
11580 u64 cookie, gfp_t gfp)
11581 {
11582 struct wiphy *wiphy = wdev->wiphy;
11583 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11584 struct sk_buff *msg;
11585 struct nlattr *func_attr;
11586 void *hdr;
11587
11588 if (WARN_ON(!inst_id))
11589 return;
11590
11591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11592 if (!msg)
11593 return;
11594
11595 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11596 if (!hdr) {
11597 nlmsg_free(msg);
11598 return;
11599 }
11600
11601 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11602 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11603 wdev->netdev->ifindex)) ||
11604 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11605 NL80211_ATTR_PAD))
11606 goto nla_put_failure;
11607
11608 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11609 NL80211_ATTR_PAD))
11610 goto nla_put_failure;
11611
11612 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11613 if (!func_attr)
11614 goto nla_put_failure;
11615
11616 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11617 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11618 goto nla_put_failure;
11619
11620 nla_nest_end(msg, func_attr);
11621 genlmsg_end(msg, hdr);
11622
11623 if (!wdev->owner_nlportid)
11624 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11625 msg, 0, NL80211_MCGRP_NAN, gfp);
11626 else
11627 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11628 wdev->owner_nlportid);
11629
11630 return;
11631
11632 nla_put_failure:
11633 nlmsg_free(msg);
11634 }
11635 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11636
11637 static int nl80211_get_protocol_features(struct sk_buff *skb,
11638 struct genl_info *info)
11639 {
11640 void *hdr;
11641 struct sk_buff *msg;
11642
11643 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11644 if (!msg)
11645 return -ENOMEM;
11646
11647 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11648 NL80211_CMD_GET_PROTOCOL_FEATURES);
11649 if (!hdr)
11650 goto nla_put_failure;
11651
11652 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11653 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11654 goto nla_put_failure;
11655
11656 genlmsg_end(msg, hdr);
11657 return genlmsg_reply(msg, info);
11658
11659 nla_put_failure:
11660 kfree_skb(msg);
11661 return -ENOBUFS;
11662 }
11663
11664 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11665 {
11666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11667 struct cfg80211_update_ft_ies_params ft_params;
11668 struct net_device *dev = info->user_ptr[1];
11669
11670 if (!rdev->ops->update_ft_ies)
11671 return -EOPNOTSUPP;
11672
11673 if (!info->attrs[NL80211_ATTR_MDID] ||
11674 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11675 return -EINVAL;
11676
11677 memset(&ft_params, 0, sizeof(ft_params));
11678 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11679 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11680 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11681
11682 return rdev_update_ft_ies(rdev, dev, &ft_params);
11683 }
11684
11685 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11686 struct genl_info *info)
11687 {
11688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11689 struct wireless_dev *wdev = info->user_ptr[1];
11690 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11691 u16 duration;
11692 int ret;
11693
11694 if (!rdev->ops->crit_proto_start)
11695 return -EOPNOTSUPP;
11696
11697 if (WARN_ON(!rdev->ops->crit_proto_stop))
11698 return -EINVAL;
11699
11700 if (rdev->crit_proto_nlportid)
11701 return -EBUSY;
11702
11703 /* determine protocol if provided */
11704 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11705 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11706
11707 if (proto >= NUM_NL80211_CRIT_PROTO)
11708 return -EINVAL;
11709
11710 /* timeout must be provided */
11711 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11712 return -EINVAL;
11713
11714 duration =
11715 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11716
11717 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11718 return -ERANGE;
11719
11720 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11721 if (!ret)
11722 rdev->crit_proto_nlportid = info->snd_portid;
11723
11724 return ret;
11725 }
11726
11727 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11728 struct genl_info *info)
11729 {
11730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11731 struct wireless_dev *wdev = info->user_ptr[1];
11732
11733 if (!rdev->ops->crit_proto_stop)
11734 return -EOPNOTSUPP;
11735
11736 if (rdev->crit_proto_nlportid) {
11737 rdev->crit_proto_nlportid = 0;
11738 rdev_crit_proto_stop(rdev, wdev);
11739 }
11740 return 0;
11741 }
11742
11743 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11744 {
11745 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11746 struct wireless_dev *wdev =
11747 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11748 int i, err;
11749 u32 vid, subcmd;
11750
11751 if (!rdev->wiphy.vendor_commands)
11752 return -EOPNOTSUPP;
11753
11754 if (IS_ERR(wdev)) {
11755 err = PTR_ERR(wdev);
11756 if (err != -EINVAL)
11757 return err;
11758 wdev = NULL;
11759 } else if (wdev->wiphy != &rdev->wiphy) {
11760 return -EINVAL;
11761 }
11762
11763 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11764 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11765 return -EINVAL;
11766
11767 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11768 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11769 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11770 const struct wiphy_vendor_command *vcmd;
11771 void *data = NULL;
11772 int len = 0;
11773
11774 vcmd = &rdev->wiphy.vendor_commands[i];
11775
11776 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11777 continue;
11778
11779 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11780 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11781 if (!wdev)
11782 return -EINVAL;
11783 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11784 !wdev->netdev)
11785 return -EINVAL;
11786
11787 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11788 if (!wdev_running(wdev))
11789 return -ENETDOWN;
11790 }
11791
11792 if (!vcmd->doit)
11793 return -EOPNOTSUPP;
11794 } else {
11795 wdev = NULL;
11796 }
11797
11798 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11799 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11800 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11801 }
11802
11803 rdev->cur_cmd_info = info;
11804 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11805 data, len);
11806 rdev->cur_cmd_info = NULL;
11807 return err;
11808 }
11809
11810 return -EOPNOTSUPP;
11811 }
11812
11813 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11814 struct netlink_callback *cb,
11815 struct cfg80211_registered_device **rdev,
11816 struct wireless_dev **wdev)
11817 {
11818 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11819 u32 vid, subcmd;
11820 unsigned int i;
11821 int vcmd_idx = -1;
11822 int err;
11823 void *data = NULL;
11824 unsigned int data_len = 0;
11825
11826 if (cb->args[0]) {
11827 /* subtract the 1 again here */
11828 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11829 struct wireless_dev *tmp;
11830
11831 if (!wiphy)
11832 return -ENODEV;
11833 *rdev = wiphy_to_rdev(wiphy);
11834 *wdev = NULL;
11835
11836 if (cb->args[1]) {
11837 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11838 if (tmp->identifier == cb->args[1] - 1) {
11839 *wdev = tmp;
11840 break;
11841 }
11842 }
11843 }
11844
11845 /* keep rtnl locked in successful case */
11846 return 0;
11847 }
11848
11849 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11850 nl80211_fam.maxattr, nl80211_policy, NULL);
11851 if (err)
11852 return err;
11853
11854 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11855 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11856 return -EINVAL;
11857
11858 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11859 if (IS_ERR(*wdev))
11860 *wdev = NULL;
11861
11862 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11863 if (IS_ERR(*rdev))
11864 return PTR_ERR(*rdev);
11865
11866 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11867 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11868
11869 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11870 const struct wiphy_vendor_command *vcmd;
11871
11872 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11873
11874 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11875 continue;
11876
11877 if (!vcmd->dumpit)
11878 return -EOPNOTSUPP;
11879
11880 vcmd_idx = i;
11881 break;
11882 }
11883
11884 if (vcmd_idx < 0)
11885 return -EOPNOTSUPP;
11886
11887 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11888 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11889 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11890 }
11891
11892 /* 0 is the first index - add 1 to parse only once */
11893 cb->args[0] = (*rdev)->wiphy_idx + 1;
11894 /* add 1 to know if it was NULL */
11895 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11896 cb->args[2] = vcmd_idx;
11897 cb->args[3] = (unsigned long)data;
11898 cb->args[4] = data_len;
11899
11900 /* keep rtnl locked in successful case */
11901 return 0;
11902 }
11903
11904 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11905 struct netlink_callback *cb)
11906 {
11907 struct cfg80211_registered_device *rdev;
11908 struct wireless_dev *wdev;
11909 unsigned int vcmd_idx;
11910 const struct wiphy_vendor_command *vcmd;
11911 void *data;
11912 int data_len;
11913 int err;
11914 struct nlattr *vendor_data;
11915
11916 rtnl_lock();
11917 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11918 if (err)
11919 goto out;
11920
11921 vcmd_idx = cb->args[2];
11922 data = (void *)cb->args[3];
11923 data_len = cb->args[4];
11924 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11925
11926 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11927 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11928 if (!wdev) {
11929 err = -EINVAL;
11930 goto out;
11931 }
11932 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11933 !wdev->netdev) {
11934 err = -EINVAL;
11935 goto out;
11936 }
11937
11938 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11939 if (!wdev_running(wdev)) {
11940 err = -ENETDOWN;
11941 goto out;
11942 }
11943 }
11944 }
11945
11946 while (1) {
11947 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11948 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11949 NL80211_CMD_VENDOR);
11950 if (!hdr)
11951 break;
11952
11953 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11954 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11955 wdev_id(wdev),
11956 NL80211_ATTR_PAD))) {
11957 genlmsg_cancel(skb, hdr);
11958 break;
11959 }
11960
11961 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11962 if (!vendor_data) {
11963 genlmsg_cancel(skb, hdr);
11964 break;
11965 }
11966
11967 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11968 (unsigned long *)&cb->args[5]);
11969 nla_nest_end(skb, vendor_data);
11970
11971 if (err == -ENOBUFS || err == -ENOENT) {
11972 genlmsg_cancel(skb, hdr);
11973 break;
11974 } else if (err) {
11975 genlmsg_cancel(skb, hdr);
11976 goto out;
11977 }
11978
11979 genlmsg_end(skb, hdr);
11980 }
11981
11982 err = skb->len;
11983 out:
11984 rtnl_unlock();
11985 return err;
11986 }
11987
11988 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11989 enum nl80211_commands cmd,
11990 enum nl80211_attrs attr,
11991 int approxlen)
11992 {
11993 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11994
11995 if (WARN_ON(!rdev->cur_cmd_info))
11996 return NULL;
11997
11998 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11999 rdev->cur_cmd_info->snd_portid,
12000 rdev->cur_cmd_info->snd_seq,
12001 cmd, attr, NULL, GFP_KERNEL);
12002 }
12003 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12004
12005 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12006 {
12007 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12008 void *hdr = ((void **)skb->cb)[1];
12009 struct nlattr *data = ((void **)skb->cb)[2];
12010
12011 /* clear CB data for netlink core to own from now on */
12012 memset(skb->cb, 0, sizeof(skb->cb));
12013
12014 if (WARN_ON(!rdev->cur_cmd_info)) {
12015 kfree_skb(skb);
12016 return -EINVAL;
12017 }
12018
12019 nla_nest_end(skb, data);
12020 genlmsg_end(skb, hdr);
12021 return genlmsg_reply(skb, rdev->cur_cmd_info);
12022 }
12023 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12024
12025 static int nl80211_set_qos_map(struct sk_buff *skb,
12026 struct genl_info *info)
12027 {
12028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12029 struct cfg80211_qos_map *qos_map = NULL;
12030 struct net_device *dev = info->user_ptr[1];
12031 u8 *pos, len, num_des, des_len, des;
12032 int ret;
12033
12034 if (!rdev->ops->set_qos_map)
12035 return -EOPNOTSUPP;
12036
12037 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12038 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12039 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12040
12041 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12042 len > IEEE80211_QOS_MAP_LEN_MAX)
12043 return -EINVAL;
12044
12045 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12046 if (!qos_map)
12047 return -ENOMEM;
12048
12049 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12050 if (num_des) {
12051 des_len = num_des *
12052 sizeof(struct cfg80211_dscp_exception);
12053 memcpy(qos_map->dscp_exception, pos, des_len);
12054 qos_map->num_des = num_des;
12055 for (des = 0; des < num_des; des++) {
12056 if (qos_map->dscp_exception[des].up > 7) {
12057 kfree(qos_map);
12058 return -EINVAL;
12059 }
12060 }
12061 pos += des_len;
12062 }
12063 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12064 }
12065
12066 wdev_lock(dev->ieee80211_ptr);
12067 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12068 if (!ret)
12069 ret = rdev_set_qos_map(rdev, dev, qos_map);
12070 wdev_unlock(dev->ieee80211_ptr);
12071
12072 kfree(qos_map);
12073 return ret;
12074 }
12075
12076 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12077 {
12078 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12079 struct net_device *dev = info->user_ptr[1];
12080 struct wireless_dev *wdev = dev->ieee80211_ptr;
12081 const u8 *peer;
12082 u8 tsid, up;
12083 u16 admitted_time = 0;
12084 int err;
12085
12086 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12087 return -EOPNOTSUPP;
12088
12089 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12090 !info->attrs[NL80211_ATTR_USER_PRIO])
12091 return -EINVAL;
12092
12093 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12094 if (tsid >= IEEE80211_NUM_TIDS)
12095 return -EINVAL;
12096
12097 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12098 if (up >= IEEE80211_NUM_UPS)
12099 return -EINVAL;
12100
12101 /* WMM uses TIDs 0-7 even for TSPEC */
12102 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12103 /* TODO: handle 802.11 TSPEC/admission control
12104 * need more attributes for that (e.g. BA session requirement);
12105 * change the WMM adminssion test above to allow both then
12106 */
12107 return -EINVAL;
12108 }
12109
12110 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12111
12112 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12113 admitted_time =
12114 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12115 if (!admitted_time)
12116 return -EINVAL;
12117 }
12118
12119 wdev_lock(wdev);
12120 switch (wdev->iftype) {
12121 case NL80211_IFTYPE_STATION:
12122 case NL80211_IFTYPE_P2P_CLIENT:
12123 if (wdev->current_bss)
12124 break;
12125 err = -ENOTCONN;
12126 goto out;
12127 default:
12128 err = -EOPNOTSUPP;
12129 goto out;
12130 }
12131
12132 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12133
12134 out:
12135 wdev_unlock(wdev);
12136 return err;
12137 }
12138
12139 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12140 {
12141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12142 struct net_device *dev = info->user_ptr[1];
12143 struct wireless_dev *wdev = dev->ieee80211_ptr;
12144 const u8 *peer;
12145 u8 tsid;
12146 int err;
12147
12148 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12149 return -EINVAL;
12150
12151 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12152 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12153
12154 wdev_lock(wdev);
12155 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12156 wdev_unlock(wdev);
12157
12158 return err;
12159 }
12160
12161 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12162 struct genl_info *info)
12163 {
12164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12165 struct net_device *dev = info->user_ptr[1];
12166 struct wireless_dev *wdev = dev->ieee80211_ptr;
12167 struct cfg80211_chan_def chandef = {};
12168 const u8 *addr;
12169 u8 oper_class;
12170 int err;
12171
12172 if (!rdev->ops->tdls_channel_switch ||
12173 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12174 return -EOPNOTSUPP;
12175
12176 switch (dev->ieee80211_ptr->iftype) {
12177 case NL80211_IFTYPE_STATION:
12178 case NL80211_IFTYPE_P2P_CLIENT:
12179 break;
12180 default:
12181 return -EOPNOTSUPP;
12182 }
12183
12184 if (!info->attrs[NL80211_ATTR_MAC] ||
12185 !info->attrs[NL80211_ATTR_OPER_CLASS])
12186 return -EINVAL;
12187
12188 err = nl80211_parse_chandef(rdev, info, &chandef);
12189 if (err)
12190 return err;
12191
12192 /*
12193 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12194 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12195 * specification is not defined for them.
12196 */
12197 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12198 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12199 chandef.width != NL80211_CHAN_WIDTH_20)
12200 return -EINVAL;
12201
12202 /* we will be active on the TDLS link */
12203 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12204 wdev->iftype))
12205 return -EINVAL;
12206
12207 /* don't allow switching to DFS channels */
12208 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12209 return -EINVAL;
12210
12211 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12212 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12213
12214 wdev_lock(wdev);
12215 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12216 wdev_unlock(wdev);
12217
12218 return err;
12219 }
12220
12221 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12222 struct genl_info *info)
12223 {
12224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12225 struct net_device *dev = info->user_ptr[1];
12226 struct wireless_dev *wdev = dev->ieee80211_ptr;
12227 const u8 *addr;
12228
12229 if (!rdev->ops->tdls_channel_switch ||
12230 !rdev->ops->tdls_cancel_channel_switch ||
12231 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12232 return -EOPNOTSUPP;
12233
12234 switch (dev->ieee80211_ptr->iftype) {
12235 case NL80211_IFTYPE_STATION:
12236 case NL80211_IFTYPE_P2P_CLIENT:
12237 break;
12238 default:
12239 return -EOPNOTSUPP;
12240 }
12241
12242 if (!info->attrs[NL80211_ATTR_MAC])
12243 return -EINVAL;
12244
12245 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12246
12247 wdev_lock(wdev);
12248 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12249 wdev_unlock(wdev);
12250
12251 return 0;
12252 }
12253
12254 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12255 struct genl_info *info)
12256 {
12257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12258 struct net_device *dev = info->user_ptr[1];
12259 struct wireless_dev *wdev = dev->ieee80211_ptr;
12260 const struct nlattr *nla;
12261 bool enabled;
12262
12263 if (!rdev->ops->set_multicast_to_unicast)
12264 return -EOPNOTSUPP;
12265
12266 if (wdev->iftype != NL80211_IFTYPE_AP &&
12267 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12268 return -EOPNOTSUPP;
12269
12270 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12271 enabled = nla_get_flag(nla);
12272
12273 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12274 }
12275
12276 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12277 {
12278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12279 struct net_device *dev = info->user_ptr[1];
12280 struct wireless_dev *wdev = dev->ieee80211_ptr;
12281 struct cfg80211_pmk_conf pmk_conf = {};
12282 int ret;
12283
12284 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12285 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12286 return -EOPNOTSUPP;
12287
12288 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12289 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12290 return -EOPNOTSUPP;
12291
12292 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12293 return -EINVAL;
12294
12295 wdev_lock(wdev);
12296 if (!wdev->current_bss) {
12297 ret = -ENOTCONN;
12298 goto out;
12299 }
12300
12301 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12302 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12303 ret = -EINVAL;
12304 goto out;
12305 }
12306
12307 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12308 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12309 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12310 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12311 ret = -EINVAL;
12312 goto out;
12313 }
12314
12315 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12316 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12317
12318 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12319 ret = -EINVAL;
12320 goto out;
12321 }
12322
12323 pmk_conf.pmk_r0_name =
12324 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12325 }
12326
12327 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12328 out:
12329 wdev_unlock(wdev);
12330 return ret;
12331 }
12332
12333 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12334 {
12335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12336 struct net_device *dev = info->user_ptr[1];
12337 struct wireless_dev *wdev = dev->ieee80211_ptr;
12338 const u8 *aa;
12339 int ret;
12340
12341 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12342 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12343 return -EOPNOTSUPP;
12344
12345 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12346 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12347 return -EOPNOTSUPP;
12348
12349 if (!info->attrs[NL80211_ATTR_MAC])
12350 return -EINVAL;
12351
12352 wdev_lock(wdev);
12353 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12354 ret = rdev_del_pmk(rdev, dev, aa);
12355 wdev_unlock(wdev);
12356
12357 return ret;
12358 }
12359
12360 #define NL80211_FLAG_NEED_WIPHY 0x01
12361 #define NL80211_FLAG_NEED_NETDEV 0x02
12362 #define NL80211_FLAG_NEED_RTNL 0x04
12363 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12364 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12365 NL80211_FLAG_CHECK_NETDEV_UP)
12366 #define NL80211_FLAG_NEED_WDEV 0x10
12367 /* If a netdev is associated, it must be UP, P2P must be started */
12368 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12369 NL80211_FLAG_CHECK_NETDEV_UP)
12370 #define NL80211_FLAG_CLEAR_SKB 0x20
12371
12372 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12373 struct genl_info *info)
12374 {
12375 struct cfg80211_registered_device *rdev;
12376 struct wireless_dev *wdev;
12377 struct net_device *dev;
12378 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12379
12380 if (rtnl)
12381 rtnl_lock();
12382
12383 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12384 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12385 if (IS_ERR(rdev)) {
12386 if (rtnl)
12387 rtnl_unlock();
12388 return PTR_ERR(rdev);
12389 }
12390 info->user_ptr[0] = rdev;
12391 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12392 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12393 ASSERT_RTNL();
12394
12395 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12396 info->attrs);
12397 if (IS_ERR(wdev)) {
12398 if (rtnl)
12399 rtnl_unlock();
12400 return PTR_ERR(wdev);
12401 }
12402
12403 dev = wdev->netdev;
12404 rdev = wiphy_to_rdev(wdev->wiphy);
12405
12406 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12407 if (!dev) {
12408 if (rtnl)
12409 rtnl_unlock();
12410 return -EINVAL;
12411 }
12412
12413 info->user_ptr[1] = dev;
12414 } else {
12415 info->user_ptr[1] = wdev;
12416 }
12417
12418 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12419 !wdev_running(wdev)) {
12420 if (rtnl)
12421 rtnl_unlock();
12422 return -ENETDOWN;
12423 }
12424
12425 if (dev)
12426 dev_hold(dev);
12427
12428 info->user_ptr[0] = rdev;
12429 }
12430
12431 return 0;
12432 }
12433
12434 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12435 struct genl_info *info)
12436 {
12437 if (info->user_ptr[1]) {
12438 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12439 struct wireless_dev *wdev = info->user_ptr[1];
12440
12441 if (wdev->netdev)
12442 dev_put(wdev->netdev);
12443 } else {
12444 dev_put(info->user_ptr[1]);
12445 }
12446 }
12447
12448 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12449 rtnl_unlock();
12450
12451 /* If needed, clear the netlink message payload from the SKB
12452 * as it might contain key data that shouldn't stick around on
12453 * the heap after the SKB is freed. The netlink message header
12454 * is still needed for further processing, so leave it intact.
12455 */
12456 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12457 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12458
12459 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12460 }
12461 }
12462
12463 static const struct genl_ops nl80211_ops[] = {
12464 {
12465 .cmd = NL80211_CMD_GET_WIPHY,
12466 .doit = nl80211_get_wiphy,
12467 .dumpit = nl80211_dump_wiphy,
12468 .done = nl80211_dump_wiphy_done,
12469 .policy = nl80211_policy,
12470 /* can be retrieved by unprivileged users */
12471 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12472 NL80211_FLAG_NEED_RTNL,
12473 },
12474 {
12475 .cmd = NL80211_CMD_SET_WIPHY,
12476 .doit = nl80211_set_wiphy,
12477 .policy = nl80211_policy,
12478 .flags = GENL_UNS_ADMIN_PERM,
12479 .internal_flags = NL80211_FLAG_NEED_RTNL,
12480 },
12481 {
12482 .cmd = NL80211_CMD_GET_INTERFACE,
12483 .doit = nl80211_get_interface,
12484 .dumpit = nl80211_dump_interface,
12485 .policy = nl80211_policy,
12486 /* can be retrieved by unprivileged users */
12487 .internal_flags = NL80211_FLAG_NEED_WDEV |
12488 NL80211_FLAG_NEED_RTNL,
12489 },
12490 {
12491 .cmd = NL80211_CMD_SET_INTERFACE,
12492 .doit = nl80211_set_interface,
12493 .policy = nl80211_policy,
12494 .flags = GENL_UNS_ADMIN_PERM,
12495 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12496 NL80211_FLAG_NEED_RTNL,
12497 },
12498 {
12499 .cmd = NL80211_CMD_NEW_INTERFACE,
12500 .doit = nl80211_new_interface,
12501 .policy = nl80211_policy,
12502 .flags = GENL_UNS_ADMIN_PERM,
12503 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12504 NL80211_FLAG_NEED_RTNL,
12505 },
12506 {
12507 .cmd = NL80211_CMD_DEL_INTERFACE,
12508 .doit = nl80211_del_interface,
12509 .policy = nl80211_policy,
12510 .flags = GENL_UNS_ADMIN_PERM,
12511 .internal_flags = NL80211_FLAG_NEED_WDEV |
12512 NL80211_FLAG_NEED_RTNL,
12513 },
12514 {
12515 .cmd = NL80211_CMD_GET_KEY,
12516 .doit = nl80211_get_key,
12517 .policy = nl80211_policy,
12518 .flags = GENL_UNS_ADMIN_PERM,
12519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12520 NL80211_FLAG_NEED_RTNL,
12521 },
12522 {
12523 .cmd = NL80211_CMD_SET_KEY,
12524 .doit = nl80211_set_key,
12525 .policy = nl80211_policy,
12526 .flags = GENL_UNS_ADMIN_PERM,
12527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12528 NL80211_FLAG_NEED_RTNL |
12529 NL80211_FLAG_CLEAR_SKB,
12530 },
12531 {
12532 .cmd = NL80211_CMD_NEW_KEY,
12533 .doit = nl80211_new_key,
12534 .policy = nl80211_policy,
12535 .flags = GENL_UNS_ADMIN_PERM,
12536 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12537 NL80211_FLAG_NEED_RTNL |
12538 NL80211_FLAG_CLEAR_SKB,
12539 },
12540 {
12541 .cmd = NL80211_CMD_DEL_KEY,
12542 .doit = nl80211_del_key,
12543 .policy = nl80211_policy,
12544 .flags = GENL_UNS_ADMIN_PERM,
12545 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12546 NL80211_FLAG_NEED_RTNL,
12547 },
12548 {
12549 .cmd = NL80211_CMD_SET_BEACON,
12550 .policy = nl80211_policy,
12551 .flags = GENL_UNS_ADMIN_PERM,
12552 .doit = nl80211_set_beacon,
12553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12554 NL80211_FLAG_NEED_RTNL,
12555 },
12556 {
12557 .cmd = NL80211_CMD_START_AP,
12558 .policy = nl80211_policy,
12559 .flags = GENL_UNS_ADMIN_PERM,
12560 .doit = nl80211_start_ap,
12561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12562 NL80211_FLAG_NEED_RTNL,
12563 },
12564 {
12565 .cmd = NL80211_CMD_STOP_AP,
12566 .policy = nl80211_policy,
12567 .flags = GENL_UNS_ADMIN_PERM,
12568 .doit = nl80211_stop_ap,
12569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12570 NL80211_FLAG_NEED_RTNL,
12571 },
12572 {
12573 .cmd = NL80211_CMD_GET_STATION,
12574 .doit = nl80211_get_station,
12575 .dumpit = nl80211_dump_station,
12576 .policy = nl80211_policy,
12577 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12578 NL80211_FLAG_NEED_RTNL,
12579 },
12580 {
12581 .cmd = NL80211_CMD_SET_STATION,
12582 .doit = nl80211_set_station,
12583 .policy = nl80211_policy,
12584 .flags = GENL_UNS_ADMIN_PERM,
12585 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12586 NL80211_FLAG_NEED_RTNL,
12587 },
12588 {
12589 .cmd = NL80211_CMD_NEW_STATION,
12590 .doit = nl80211_new_station,
12591 .policy = nl80211_policy,
12592 .flags = GENL_UNS_ADMIN_PERM,
12593 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12594 NL80211_FLAG_NEED_RTNL,
12595 },
12596 {
12597 .cmd = NL80211_CMD_DEL_STATION,
12598 .doit = nl80211_del_station,
12599 .policy = nl80211_policy,
12600 .flags = GENL_UNS_ADMIN_PERM,
12601 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12602 NL80211_FLAG_NEED_RTNL,
12603 },
12604 {
12605 .cmd = NL80211_CMD_GET_MPATH,
12606 .doit = nl80211_get_mpath,
12607 .dumpit = nl80211_dump_mpath,
12608 .policy = nl80211_policy,
12609 .flags = GENL_UNS_ADMIN_PERM,
12610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12611 NL80211_FLAG_NEED_RTNL,
12612 },
12613 {
12614 .cmd = NL80211_CMD_GET_MPP,
12615 .doit = nl80211_get_mpp,
12616 .dumpit = nl80211_dump_mpp,
12617 .policy = nl80211_policy,
12618 .flags = GENL_UNS_ADMIN_PERM,
12619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12620 NL80211_FLAG_NEED_RTNL,
12621 },
12622 {
12623 .cmd = NL80211_CMD_SET_MPATH,
12624 .doit = nl80211_set_mpath,
12625 .policy = nl80211_policy,
12626 .flags = GENL_UNS_ADMIN_PERM,
12627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12628 NL80211_FLAG_NEED_RTNL,
12629 },
12630 {
12631 .cmd = NL80211_CMD_NEW_MPATH,
12632 .doit = nl80211_new_mpath,
12633 .policy = nl80211_policy,
12634 .flags = GENL_UNS_ADMIN_PERM,
12635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12636 NL80211_FLAG_NEED_RTNL,
12637 },
12638 {
12639 .cmd = NL80211_CMD_DEL_MPATH,
12640 .doit = nl80211_del_mpath,
12641 .policy = nl80211_policy,
12642 .flags = GENL_UNS_ADMIN_PERM,
12643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12644 NL80211_FLAG_NEED_RTNL,
12645 },
12646 {
12647 .cmd = NL80211_CMD_SET_BSS,
12648 .doit = nl80211_set_bss,
12649 .policy = nl80211_policy,
12650 .flags = GENL_UNS_ADMIN_PERM,
12651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12652 NL80211_FLAG_NEED_RTNL,
12653 },
12654 {
12655 .cmd = NL80211_CMD_GET_REG,
12656 .doit = nl80211_get_reg_do,
12657 .dumpit = nl80211_get_reg_dump,
12658 .policy = nl80211_policy,
12659 .internal_flags = NL80211_FLAG_NEED_RTNL,
12660 /* can be retrieved by unprivileged users */
12661 },
12662 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12663 {
12664 .cmd = NL80211_CMD_SET_REG,
12665 .doit = nl80211_set_reg,
12666 .policy = nl80211_policy,
12667 .flags = GENL_ADMIN_PERM,
12668 .internal_flags = NL80211_FLAG_NEED_RTNL,
12669 },
12670 #endif
12671 {
12672 .cmd = NL80211_CMD_REQ_SET_REG,
12673 .doit = nl80211_req_set_reg,
12674 .policy = nl80211_policy,
12675 .flags = GENL_ADMIN_PERM,
12676 },
12677 {
12678 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12679 .doit = nl80211_get_mesh_config,
12680 .policy = nl80211_policy,
12681 /* can be retrieved by unprivileged users */
12682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683 NL80211_FLAG_NEED_RTNL,
12684 },
12685 {
12686 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12687 .doit = nl80211_update_mesh_config,
12688 .policy = nl80211_policy,
12689 .flags = GENL_UNS_ADMIN_PERM,
12690 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691 NL80211_FLAG_NEED_RTNL,
12692 },
12693 {
12694 .cmd = NL80211_CMD_TRIGGER_SCAN,
12695 .doit = nl80211_trigger_scan,
12696 .policy = nl80211_policy,
12697 .flags = GENL_UNS_ADMIN_PERM,
12698 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12699 NL80211_FLAG_NEED_RTNL,
12700 },
12701 {
12702 .cmd = NL80211_CMD_ABORT_SCAN,
12703 .doit = nl80211_abort_scan,
12704 .policy = nl80211_policy,
12705 .flags = GENL_UNS_ADMIN_PERM,
12706 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12707 NL80211_FLAG_NEED_RTNL,
12708 },
12709 {
12710 .cmd = NL80211_CMD_GET_SCAN,
12711 .policy = nl80211_policy,
12712 .dumpit = nl80211_dump_scan,
12713 },
12714 {
12715 .cmd = NL80211_CMD_START_SCHED_SCAN,
12716 .doit = nl80211_start_sched_scan,
12717 .policy = nl80211_policy,
12718 .flags = GENL_UNS_ADMIN_PERM,
12719 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12720 NL80211_FLAG_NEED_RTNL,
12721 },
12722 {
12723 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12724 .doit = nl80211_stop_sched_scan,
12725 .policy = nl80211_policy,
12726 .flags = GENL_UNS_ADMIN_PERM,
12727 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12728 NL80211_FLAG_NEED_RTNL,
12729 },
12730 {
12731 .cmd = NL80211_CMD_AUTHENTICATE,
12732 .doit = nl80211_authenticate,
12733 .policy = nl80211_policy,
12734 .flags = GENL_UNS_ADMIN_PERM,
12735 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12736 NL80211_FLAG_NEED_RTNL |
12737 NL80211_FLAG_CLEAR_SKB,
12738 },
12739 {
12740 .cmd = NL80211_CMD_ASSOCIATE,
12741 .doit = nl80211_associate,
12742 .policy = nl80211_policy,
12743 .flags = GENL_UNS_ADMIN_PERM,
12744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12745 NL80211_FLAG_NEED_RTNL,
12746 },
12747 {
12748 .cmd = NL80211_CMD_DEAUTHENTICATE,
12749 .doit = nl80211_deauthenticate,
12750 .policy = nl80211_policy,
12751 .flags = GENL_UNS_ADMIN_PERM,
12752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12753 NL80211_FLAG_NEED_RTNL,
12754 },
12755 {
12756 .cmd = NL80211_CMD_DISASSOCIATE,
12757 .doit = nl80211_disassociate,
12758 .policy = nl80211_policy,
12759 .flags = GENL_UNS_ADMIN_PERM,
12760 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12761 NL80211_FLAG_NEED_RTNL,
12762 },
12763 {
12764 .cmd = NL80211_CMD_JOIN_IBSS,
12765 .doit = nl80211_join_ibss,
12766 .policy = nl80211_policy,
12767 .flags = GENL_UNS_ADMIN_PERM,
12768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12769 NL80211_FLAG_NEED_RTNL,
12770 },
12771 {
12772 .cmd = NL80211_CMD_LEAVE_IBSS,
12773 .doit = nl80211_leave_ibss,
12774 .policy = nl80211_policy,
12775 .flags = GENL_UNS_ADMIN_PERM,
12776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12777 NL80211_FLAG_NEED_RTNL,
12778 },
12779 #ifdef CONFIG_NL80211_TESTMODE
12780 {
12781 .cmd = NL80211_CMD_TESTMODE,
12782 .doit = nl80211_testmode_do,
12783 .dumpit = nl80211_testmode_dump,
12784 .policy = nl80211_policy,
12785 .flags = GENL_UNS_ADMIN_PERM,
12786 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12787 NL80211_FLAG_NEED_RTNL,
12788 },
12789 #endif
12790 {
12791 .cmd = NL80211_CMD_CONNECT,
12792 .doit = nl80211_connect,
12793 .policy = nl80211_policy,
12794 .flags = GENL_UNS_ADMIN_PERM,
12795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12796 NL80211_FLAG_NEED_RTNL,
12797 },
12798 {
12799 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12800 .doit = nl80211_update_connect_params,
12801 .policy = nl80211_policy,
12802 .flags = GENL_ADMIN_PERM,
12803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12804 NL80211_FLAG_NEED_RTNL,
12805 },
12806 {
12807 .cmd = NL80211_CMD_DISCONNECT,
12808 .doit = nl80211_disconnect,
12809 .policy = nl80211_policy,
12810 .flags = GENL_UNS_ADMIN_PERM,
12811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12812 NL80211_FLAG_NEED_RTNL,
12813 },
12814 {
12815 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12816 .doit = nl80211_wiphy_netns,
12817 .policy = nl80211_policy,
12818 .flags = GENL_UNS_ADMIN_PERM,
12819 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12820 NL80211_FLAG_NEED_RTNL,
12821 },
12822 {
12823 .cmd = NL80211_CMD_GET_SURVEY,
12824 .policy = nl80211_policy,
12825 .dumpit = nl80211_dump_survey,
12826 },
12827 {
12828 .cmd = NL80211_CMD_SET_PMKSA,
12829 .doit = nl80211_setdel_pmksa,
12830 .policy = nl80211_policy,
12831 .flags = GENL_UNS_ADMIN_PERM,
12832 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12833 NL80211_FLAG_NEED_RTNL,
12834 },
12835 {
12836 .cmd = NL80211_CMD_DEL_PMKSA,
12837 .doit = nl80211_setdel_pmksa,
12838 .policy = nl80211_policy,
12839 .flags = GENL_UNS_ADMIN_PERM,
12840 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12841 NL80211_FLAG_NEED_RTNL,
12842 },
12843 {
12844 .cmd = NL80211_CMD_FLUSH_PMKSA,
12845 .doit = nl80211_flush_pmksa,
12846 .policy = nl80211_policy,
12847 .flags = GENL_UNS_ADMIN_PERM,
12848 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12849 NL80211_FLAG_NEED_RTNL,
12850 },
12851 {
12852 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12853 .doit = nl80211_remain_on_channel,
12854 .policy = nl80211_policy,
12855 .flags = GENL_UNS_ADMIN_PERM,
12856 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12857 NL80211_FLAG_NEED_RTNL,
12858 },
12859 {
12860 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12861 .doit = nl80211_cancel_remain_on_channel,
12862 .policy = nl80211_policy,
12863 .flags = GENL_UNS_ADMIN_PERM,
12864 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12865 NL80211_FLAG_NEED_RTNL,
12866 },
12867 {
12868 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12869 .doit = nl80211_set_tx_bitrate_mask,
12870 .policy = nl80211_policy,
12871 .flags = GENL_UNS_ADMIN_PERM,
12872 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12873 NL80211_FLAG_NEED_RTNL,
12874 },
12875 {
12876 .cmd = NL80211_CMD_REGISTER_FRAME,
12877 .doit = nl80211_register_mgmt,
12878 .policy = nl80211_policy,
12879 .flags = GENL_UNS_ADMIN_PERM,
12880 .internal_flags = NL80211_FLAG_NEED_WDEV |
12881 NL80211_FLAG_NEED_RTNL,
12882 },
12883 {
12884 .cmd = NL80211_CMD_FRAME,
12885 .doit = nl80211_tx_mgmt,
12886 .policy = nl80211_policy,
12887 .flags = GENL_UNS_ADMIN_PERM,
12888 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12889 NL80211_FLAG_NEED_RTNL,
12890 },
12891 {
12892 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12893 .doit = nl80211_tx_mgmt_cancel_wait,
12894 .policy = nl80211_policy,
12895 .flags = GENL_UNS_ADMIN_PERM,
12896 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12897 NL80211_FLAG_NEED_RTNL,
12898 },
12899 {
12900 .cmd = NL80211_CMD_SET_POWER_SAVE,
12901 .doit = nl80211_set_power_save,
12902 .policy = nl80211_policy,
12903 .flags = GENL_UNS_ADMIN_PERM,
12904 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12905 NL80211_FLAG_NEED_RTNL,
12906 },
12907 {
12908 .cmd = NL80211_CMD_GET_POWER_SAVE,
12909 .doit = nl80211_get_power_save,
12910 .policy = nl80211_policy,
12911 /* can be retrieved by unprivileged users */
12912 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12913 NL80211_FLAG_NEED_RTNL,
12914 },
12915 {
12916 .cmd = NL80211_CMD_SET_CQM,
12917 .doit = nl80211_set_cqm,
12918 .policy = nl80211_policy,
12919 .flags = GENL_UNS_ADMIN_PERM,
12920 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12921 NL80211_FLAG_NEED_RTNL,
12922 },
12923 {
12924 .cmd = NL80211_CMD_SET_CHANNEL,
12925 .doit = nl80211_set_channel,
12926 .policy = nl80211_policy,
12927 .flags = GENL_UNS_ADMIN_PERM,
12928 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12929 NL80211_FLAG_NEED_RTNL,
12930 },
12931 {
12932 .cmd = NL80211_CMD_SET_WDS_PEER,
12933 .doit = nl80211_set_wds_peer,
12934 .policy = nl80211_policy,
12935 .flags = GENL_UNS_ADMIN_PERM,
12936 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12937 NL80211_FLAG_NEED_RTNL,
12938 },
12939 {
12940 .cmd = NL80211_CMD_JOIN_MESH,
12941 .doit = nl80211_join_mesh,
12942 .policy = nl80211_policy,
12943 .flags = GENL_UNS_ADMIN_PERM,
12944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12945 NL80211_FLAG_NEED_RTNL,
12946 },
12947 {
12948 .cmd = NL80211_CMD_LEAVE_MESH,
12949 .doit = nl80211_leave_mesh,
12950 .policy = nl80211_policy,
12951 .flags = GENL_UNS_ADMIN_PERM,
12952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12953 NL80211_FLAG_NEED_RTNL,
12954 },
12955 {
12956 .cmd = NL80211_CMD_JOIN_OCB,
12957 .doit = nl80211_join_ocb,
12958 .policy = nl80211_policy,
12959 .flags = GENL_UNS_ADMIN_PERM,
12960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12961 NL80211_FLAG_NEED_RTNL,
12962 },
12963 {
12964 .cmd = NL80211_CMD_LEAVE_OCB,
12965 .doit = nl80211_leave_ocb,
12966 .policy = nl80211_policy,
12967 .flags = GENL_UNS_ADMIN_PERM,
12968 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12969 NL80211_FLAG_NEED_RTNL,
12970 },
12971 #ifdef CONFIG_PM
12972 {
12973 .cmd = NL80211_CMD_GET_WOWLAN,
12974 .doit = nl80211_get_wowlan,
12975 .policy = nl80211_policy,
12976 /* can be retrieved by unprivileged users */
12977 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12978 NL80211_FLAG_NEED_RTNL,
12979 },
12980 {
12981 .cmd = NL80211_CMD_SET_WOWLAN,
12982 .doit = nl80211_set_wowlan,
12983 .policy = nl80211_policy,
12984 .flags = GENL_UNS_ADMIN_PERM,
12985 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12986 NL80211_FLAG_NEED_RTNL,
12987 },
12988 #endif
12989 {
12990 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12991 .doit = nl80211_set_rekey_data,
12992 .policy = nl80211_policy,
12993 .flags = GENL_UNS_ADMIN_PERM,
12994 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12995 NL80211_FLAG_NEED_RTNL |
12996 NL80211_FLAG_CLEAR_SKB,
12997 },
12998 {
12999 .cmd = NL80211_CMD_TDLS_MGMT,
13000 .doit = nl80211_tdls_mgmt,
13001 .policy = nl80211_policy,
13002 .flags = GENL_UNS_ADMIN_PERM,
13003 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13004 NL80211_FLAG_NEED_RTNL,
13005 },
13006 {
13007 .cmd = NL80211_CMD_TDLS_OPER,
13008 .doit = nl80211_tdls_oper,
13009 .policy = nl80211_policy,
13010 .flags = GENL_UNS_ADMIN_PERM,
13011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13012 NL80211_FLAG_NEED_RTNL,
13013 },
13014 {
13015 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13016 .doit = nl80211_register_unexpected_frame,
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_PROBE_CLIENT,
13024 .doit = nl80211_probe_client,
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_REGISTER_BEACONS,
13032 .doit = nl80211_register_beacons,
13033 .policy = nl80211_policy,
13034 .flags = GENL_UNS_ADMIN_PERM,
13035 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13036 NL80211_FLAG_NEED_RTNL,
13037 },
13038 {
13039 .cmd = NL80211_CMD_SET_NOACK_MAP,
13040 .doit = nl80211_set_noack_map,
13041 .policy = nl80211_policy,
13042 .flags = GENL_UNS_ADMIN_PERM,
13043 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13044 NL80211_FLAG_NEED_RTNL,
13045 },
13046 {
13047 .cmd = NL80211_CMD_START_P2P_DEVICE,
13048 .doit = nl80211_start_p2p_device,
13049 .policy = nl80211_policy,
13050 .flags = GENL_UNS_ADMIN_PERM,
13051 .internal_flags = NL80211_FLAG_NEED_WDEV |
13052 NL80211_FLAG_NEED_RTNL,
13053 },
13054 {
13055 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13056 .doit = nl80211_stop_p2p_device,
13057 .policy = nl80211_policy,
13058 .flags = GENL_UNS_ADMIN_PERM,
13059 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13060 NL80211_FLAG_NEED_RTNL,
13061 },
13062 {
13063 .cmd = NL80211_CMD_START_NAN,
13064 .doit = nl80211_start_nan,
13065 .policy = nl80211_policy,
13066 .flags = GENL_ADMIN_PERM,
13067 .internal_flags = NL80211_FLAG_NEED_WDEV |
13068 NL80211_FLAG_NEED_RTNL,
13069 },
13070 {
13071 .cmd = NL80211_CMD_STOP_NAN,
13072 .doit = nl80211_stop_nan,
13073 .policy = nl80211_policy,
13074 .flags = GENL_ADMIN_PERM,
13075 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13076 NL80211_FLAG_NEED_RTNL,
13077 },
13078 {
13079 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13080 .doit = nl80211_nan_add_func,
13081 .policy = nl80211_policy,
13082 .flags = GENL_ADMIN_PERM,
13083 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13084 NL80211_FLAG_NEED_RTNL,
13085 },
13086 {
13087 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13088 .doit = nl80211_nan_del_func,
13089 .policy = nl80211_policy,
13090 .flags = GENL_ADMIN_PERM,
13091 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13092 NL80211_FLAG_NEED_RTNL,
13093 },
13094 {
13095 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13096 .doit = nl80211_nan_change_config,
13097 .policy = nl80211_policy,
13098 .flags = GENL_ADMIN_PERM,
13099 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13100 NL80211_FLAG_NEED_RTNL,
13101 },
13102 {
13103 .cmd = NL80211_CMD_SET_MCAST_RATE,
13104 .doit = nl80211_set_mcast_rate,
13105 .policy = nl80211_policy,
13106 .flags = GENL_UNS_ADMIN_PERM,
13107 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13108 NL80211_FLAG_NEED_RTNL,
13109 },
13110 {
13111 .cmd = NL80211_CMD_SET_MAC_ACL,
13112 .doit = nl80211_set_mac_acl,
13113 .policy = nl80211_policy,
13114 .flags = GENL_UNS_ADMIN_PERM,
13115 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13116 NL80211_FLAG_NEED_RTNL,
13117 },
13118 {
13119 .cmd = NL80211_CMD_RADAR_DETECT,
13120 .doit = nl80211_start_radar_detection,
13121 .policy = nl80211_policy,
13122 .flags = GENL_UNS_ADMIN_PERM,
13123 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13124 NL80211_FLAG_NEED_RTNL,
13125 },
13126 {
13127 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13128 .doit = nl80211_get_protocol_features,
13129 .policy = nl80211_policy,
13130 },
13131 {
13132 .cmd = NL80211_CMD_UPDATE_FT_IES,
13133 .doit = nl80211_update_ft_ies,
13134 .policy = nl80211_policy,
13135 .flags = GENL_UNS_ADMIN_PERM,
13136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13137 NL80211_FLAG_NEED_RTNL,
13138 },
13139 {
13140 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13141 .doit = nl80211_crit_protocol_start,
13142 .policy = nl80211_policy,
13143 .flags = GENL_UNS_ADMIN_PERM,
13144 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13145 NL80211_FLAG_NEED_RTNL,
13146 },
13147 {
13148 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13149 .doit = nl80211_crit_protocol_stop,
13150 .policy = nl80211_policy,
13151 .flags = GENL_UNS_ADMIN_PERM,
13152 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13153 NL80211_FLAG_NEED_RTNL,
13154 },
13155 {
13156 .cmd = NL80211_CMD_GET_COALESCE,
13157 .doit = nl80211_get_coalesce,
13158 .policy = nl80211_policy,
13159 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13160 NL80211_FLAG_NEED_RTNL,
13161 },
13162 {
13163 .cmd = NL80211_CMD_SET_COALESCE,
13164 .doit = nl80211_set_coalesce,
13165 .policy = nl80211_policy,
13166 .flags = GENL_UNS_ADMIN_PERM,
13167 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13168 NL80211_FLAG_NEED_RTNL,
13169 },
13170 {
13171 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13172 .doit = nl80211_channel_switch,
13173 .policy = nl80211_policy,
13174 .flags = GENL_UNS_ADMIN_PERM,
13175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13176 NL80211_FLAG_NEED_RTNL,
13177 },
13178 {
13179 .cmd = NL80211_CMD_VENDOR,
13180 .doit = nl80211_vendor_cmd,
13181 .dumpit = nl80211_vendor_cmd_dump,
13182 .policy = nl80211_policy,
13183 .flags = GENL_UNS_ADMIN_PERM,
13184 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13185 NL80211_FLAG_NEED_RTNL,
13186 },
13187 {
13188 .cmd = NL80211_CMD_SET_QOS_MAP,
13189 .doit = nl80211_set_qos_map,
13190 .policy = nl80211_policy,
13191 .flags = GENL_UNS_ADMIN_PERM,
13192 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13193 NL80211_FLAG_NEED_RTNL,
13194 },
13195 {
13196 .cmd = NL80211_CMD_ADD_TX_TS,
13197 .doit = nl80211_add_tx_ts,
13198 .policy = nl80211_policy,
13199 .flags = GENL_UNS_ADMIN_PERM,
13200 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13201 NL80211_FLAG_NEED_RTNL,
13202 },
13203 {
13204 .cmd = NL80211_CMD_DEL_TX_TS,
13205 .doit = nl80211_del_tx_ts,
13206 .policy = nl80211_policy,
13207 .flags = GENL_UNS_ADMIN_PERM,
13208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13209 NL80211_FLAG_NEED_RTNL,
13210 },
13211 {
13212 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13213 .doit = nl80211_tdls_channel_switch,
13214 .policy = nl80211_policy,
13215 .flags = GENL_UNS_ADMIN_PERM,
13216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13217 NL80211_FLAG_NEED_RTNL,
13218 },
13219 {
13220 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13221 .doit = nl80211_tdls_cancel_channel_switch,
13222 .policy = nl80211_policy,
13223 .flags = GENL_UNS_ADMIN_PERM,
13224 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13225 NL80211_FLAG_NEED_RTNL,
13226 },
13227 {
13228 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13229 .doit = nl80211_set_multicast_to_unicast,
13230 .policy = nl80211_policy,
13231 .flags = GENL_UNS_ADMIN_PERM,
13232 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13233 NL80211_FLAG_NEED_RTNL,
13234 },
13235 {
13236 .cmd = NL80211_CMD_SET_PMK,
13237 .doit = nl80211_set_pmk,
13238 .policy = nl80211_policy,
13239 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13240 NL80211_FLAG_NEED_RTNL,
13241 },
13242 {
13243 .cmd = NL80211_CMD_DEL_PMK,
13244 .doit = nl80211_del_pmk,
13245 .policy = nl80211_policy,
13246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13247 NL80211_FLAG_NEED_RTNL,
13248 },
13249
13250 };
13251
13252 static struct genl_family nl80211_fam __ro_after_init = {
13253 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13254 .hdrsize = 0, /* no private header */
13255 .version = 1, /* no particular meaning now */
13256 .maxattr = NL80211_ATTR_MAX,
13257 .netnsok = true,
13258 .pre_doit = nl80211_pre_doit,
13259 .post_doit = nl80211_post_doit,
13260 .module = THIS_MODULE,
13261 .ops = nl80211_ops,
13262 .n_ops = ARRAY_SIZE(nl80211_ops),
13263 .mcgrps = nl80211_mcgrps,
13264 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13265 };
13266
13267 /* notification functions */
13268
13269 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13270 enum nl80211_commands cmd)
13271 {
13272 struct sk_buff *msg;
13273 struct nl80211_dump_wiphy_state state = {};
13274
13275 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13276 cmd != NL80211_CMD_DEL_WIPHY);
13277
13278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13279 if (!msg)
13280 return;
13281
13282 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13283 nlmsg_free(msg);
13284 return;
13285 }
13286
13287 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13288 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13289 }
13290
13291 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13292 struct wireless_dev *wdev,
13293 enum nl80211_commands cmd)
13294 {
13295 struct sk_buff *msg;
13296
13297 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13298 cmd != NL80211_CMD_DEL_INTERFACE);
13299
13300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13301 if (!msg)
13302 return;
13303
13304 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13305 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13306 nlmsg_free(msg);
13307 return;
13308 }
13309
13310 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13311 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13312 }
13313
13314 static int nl80211_add_scan_req(struct sk_buff *msg,
13315 struct cfg80211_registered_device *rdev)
13316 {
13317 struct cfg80211_scan_request *req = rdev->scan_req;
13318 struct nlattr *nest;
13319 int i;
13320
13321 if (WARN_ON(!req))
13322 return 0;
13323
13324 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13325 if (!nest)
13326 goto nla_put_failure;
13327 for (i = 0; i < req->n_ssids; i++) {
13328 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13329 goto nla_put_failure;
13330 }
13331 nla_nest_end(msg, nest);
13332
13333 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13334 if (!nest)
13335 goto nla_put_failure;
13336 for (i = 0; i < req->n_channels; i++) {
13337 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13338 goto nla_put_failure;
13339 }
13340 nla_nest_end(msg, nest);
13341
13342 if (req->ie &&
13343 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13344 goto nla_put_failure;
13345
13346 if (req->flags &&
13347 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13348 goto nla_put_failure;
13349
13350 if (req->info.scan_start_tsf &&
13351 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13352 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13353 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13354 req->info.tsf_bssid)))
13355 goto nla_put_failure;
13356
13357 return 0;
13358 nla_put_failure:
13359 return -ENOBUFS;
13360 }
13361
13362 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13363 struct cfg80211_registered_device *rdev,
13364 struct wireless_dev *wdev,
13365 u32 portid, u32 seq, int flags,
13366 u32 cmd)
13367 {
13368 void *hdr;
13369
13370 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13371 if (!hdr)
13372 return -1;
13373
13374 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13375 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13376 wdev->netdev->ifindex)) ||
13377 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13378 NL80211_ATTR_PAD))
13379 goto nla_put_failure;
13380
13381 /* ignore errors and send incomplete event anyway */
13382 nl80211_add_scan_req(msg, rdev);
13383
13384 genlmsg_end(msg, hdr);
13385 return 0;
13386
13387 nla_put_failure:
13388 genlmsg_cancel(msg, hdr);
13389 return -EMSGSIZE;
13390 }
13391
13392 static int
13393 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13394 struct cfg80211_sched_scan_request *req, u32 cmd)
13395 {
13396 void *hdr;
13397
13398 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13399 if (!hdr)
13400 return -1;
13401
13402 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13403 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13404 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13405 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13406 NL80211_ATTR_PAD))
13407 goto nla_put_failure;
13408
13409 genlmsg_end(msg, hdr);
13410 return 0;
13411
13412 nla_put_failure:
13413 genlmsg_cancel(msg, hdr);
13414 return -EMSGSIZE;
13415 }
13416
13417 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13418 struct wireless_dev *wdev)
13419 {
13420 struct sk_buff *msg;
13421
13422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13423 if (!msg)
13424 return;
13425
13426 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13427 NL80211_CMD_TRIGGER_SCAN) < 0) {
13428 nlmsg_free(msg);
13429 return;
13430 }
13431
13432 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13433 NL80211_MCGRP_SCAN, GFP_KERNEL);
13434 }
13435
13436 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13437 struct wireless_dev *wdev, bool aborted)
13438 {
13439 struct sk_buff *msg;
13440
13441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13442 if (!msg)
13443 return NULL;
13444
13445 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13446 aborted ? NL80211_CMD_SCAN_ABORTED :
13447 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13448 nlmsg_free(msg);
13449 return NULL;
13450 }
13451
13452 return msg;
13453 }
13454
13455 /* send message created by nl80211_build_scan_msg() */
13456 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13457 struct sk_buff *msg)
13458 {
13459 if (!msg)
13460 return;
13461
13462 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13463 NL80211_MCGRP_SCAN, GFP_KERNEL);
13464 }
13465
13466 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13467 {
13468 struct sk_buff *msg;
13469
13470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13471 if (!msg)
13472 return;
13473
13474 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13475 nlmsg_free(msg);
13476 return;
13477 }
13478
13479 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13480 NL80211_MCGRP_SCAN, GFP_KERNEL);
13481 }
13482
13483 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13484 struct regulatory_request *request)
13485 {
13486 /* Userspace can always count this one always being set */
13487 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13488 goto nla_put_failure;
13489
13490 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13491 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13492 NL80211_REGDOM_TYPE_WORLD))
13493 goto nla_put_failure;
13494 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13495 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13496 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13497 goto nla_put_failure;
13498 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13499 request->intersect) {
13500 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13501 NL80211_REGDOM_TYPE_INTERSECTION))
13502 goto nla_put_failure;
13503 } else {
13504 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13505 NL80211_REGDOM_TYPE_COUNTRY) ||
13506 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13507 request->alpha2))
13508 goto nla_put_failure;
13509 }
13510
13511 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13512 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13513
13514 if (wiphy &&
13515 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13516 goto nla_put_failure;
13517
13518 if (wiphy &&
13519 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13520 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13521 goto nla_put_failure;
13522 }
13523
13524 return true;
13525
13526 nla_put_failure:
13527 return false;
13528 }
13529
13530 /*
13531 * This can happen on global regulatory changes or device specific settings
13532 * based on custom regulatory domains.
13533 */
13534 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13535 struct regulatory_request *request)
13536 {
13537 struct sk_buff *msg;
13538 void *hdr;
13539
13540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13541 if (!msg)
13542 return;
13543
13544 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13545 if (!hdr) {
13546 nlmsg_free(msg);
13547 return;
13548 }
13549
13550 if (nl80211_reg_change_event_fill(msg, request) == false)
13551 goto nla_put_failure;
13552
13553 genlmsg_end(msg, hdr);
13554
13555 rcu_read_lock();
13556 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13557 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13558 rcu_read_unlock();
13559
13560 return;
13561
13562 nla_put_failure:
13563 genlmsg_cancel(msg, hdr);
13564 nlmsg_free(msg);
13565 }
13566
13567 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13568 struct net_device *netdev,
13569 const u8 *buf, size_t len,
13570 enum nl80211_commands cmd, gfp_t gfp,
13571 int uapsd_queues)
13572 {
13573 struct sk_buff *msg;
13574 void *hdr;
13575
13576 msg = nlmsg_new(100 + len, gfp);
13577 if (!msg)
13578 return;
13579
13580 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13581 if (!hdr) {
13582 nlmsg_free(msg);
13583 return;
13584 }
13585
13586 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13587 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13588 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13589 goto nla_put_failure;
13590
13591 if (uapsd_queues >= 0) {
13592 struct nlattr *nla_wmm =
13593 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13594 if (!nla_wmm)
13595 goto nla_put_failure;
13596
13597 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13598 uapsd_queues))
13599 goto nla_put_failure;
13600
13601 nla_nest_end(msg, nla_wmm);
13602 }
13603
13604 genlmsg_end(msg, hdr);
13605
13606 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13607 NL80211_MCGRP_MLME, gfp);
13608 return;
13609
13610 nla_put_failure:
13611 genlmsg_cancel(msg, hdr);
13612 nlmsg_free(msg);
13613 }
13614
13615 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13616 struct net_device *netdev, const u8 *buf,
13617 size_t len, gfp_t gfp)
13618 {
13619 nl80211_send_mlme_event(rdev, netdev, buf, len,
13620 NL80211_CMD_AUTHENTICATE, gfp, -1);
13621 }
13622
13623 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13624 struct net_device *netdev, const u8 *buf,
13625 size_t len, gfp_t gfp, int uapsd_queues)
13626 {
13627 nl80211_send_mlme_event(rdev, netdev, buf, len,
13628 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13629 }
13630
13631 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13632 struct net_device *netdev, const u8 *buf,
13633 size_t len, gfp_t gfp)
13634 {
13635 nl80211_send_mlme_event(rdev, netdev, buf, len,
13636 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13637 }
13638
13639 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13640 struct net_device *netdev, const u8 *buf,
13641 size_t len, gfp_t gfp)
13642 {
13643 nl80211_send_mlme_event(rdev, netdev, buf, len,
13644 NL80211_CMD_DISASSOCIATE, gfp, -1);
13645 }
13646
13647 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13648 size_t len)
13649 {
13650 struct wireless_dev *wdev = dev->ieee80211_ptr;
13651 struct wiphy *wiphy = wdev->wiphy;
13652 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13653 const struct ieee80211_mgmt *mgmt = (void *)buf;
13654 u32 cmd;
13655
13656 if (WARN_ON(len < 2))
13657 return;
13658
13659 if (ieee80211_is_deauth(mgmt->frame_control))
13660 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13661 else
13662 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13663
13664 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13665 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13666 }
13667 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13668
13669 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13670 struct net_device *netdev, int cmd,
13671 const u8 *addr, gfp_t gfp)
13672 {
13673 struct sk_buff *msg;
13674 void *hdr;
13675
13676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13677 if (!msg)
13678 return;
13679
13680 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13681 if (!hdr) {
13682 nlmsg_free(msg);
13683 return;
13684 }
13685
13686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13688 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13689 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13690 goto nla_put_failure;
13691
13692 genlmsg_end(msg, hdr);
13693
13694 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13695 NL80211_MCGRP_MLME, gfp);
13696 return;
13697
13698 nla_put_failure:
13699 genlmsg_cancel(msg, hdr);
13700 nlmsg_free(msg);
13701 }
13702
13703 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13704 struct net_device *netdev, const u8 *addr,
13705 gfp_t gfp)
13706 {
13707 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13708 addr, gfp);
13709 }
13710
13711 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13712 struct net_device *netdev, const u8 *addr,
13713 gfp_t gfp)
13714 {
13715 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13716 addr, gfp);
13717 }
13718
13719 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13720 struct net_device *netdev,
13721 struct cfg80211_connect_resp_params *cr,
13722 gfp_t gfp)
13723 {
13724 struct sk_buff *msg;
13725 void *hdr;
13726
13727 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13728 cr->fils_kek_len + cr->pmk_len +
13729 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13730 if (!msg)
13731 return;
13732
13733 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13734 if (!hdr) {
13735 nlmsg_free(msg);
13736 return;
13737 }
13738
13739 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13740 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13741 (cr->bssid &&
13742 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13743 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13744 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13745 cr->status) ||
13746 (cr->status < 0 &&
13747 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13748 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13749 cr->timeout_reason))) ||
13750 (cr->req_ie &&
13751 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13752 (cr->resp_ie &&
13753 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13754 cr->resp_ie)) ||
13755 (cr->update_erp_next_seq_num &&
13756 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13757 cr->fils_erp_next_seq_num)) ||
13758 (cr->status == WLAN_STATUS_SUCCESS &&
13759 ((cr->fils_kek &&
13760 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13761 cr->fils_kek)) ||
13762 (cr->pmk &&
13763 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13764 (cr->pmkid &&
13765 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13766 goto nla_put_failure;
13767
13768 genlmsg_end(msg, hdr);
13769
13770 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13771 NL80211_MCGRP_MLME, gfp);
13772 return;
13773
13774 nla_put_failure:
13775 genlmsg_cancel(msg, hdr);
13776 nlmsg_free(msg);
13777 }
13778
13779 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13780 struct net_device *netdev,
13781 struct cfg80211_roam_info *info, gfp_t gfp)
13782 {
13783 struct sk_buff *msg;
13784 void *hdr;
13785 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13786
13787 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13788 if (!msg)
13789 return;
13790
13791 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13792 if (!hdr) {
13793 nlmsg_free(msg);
13794 return;
13795 }
13796
13797 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13798 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13799 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13800 (info->req_ie &&
13801 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13802 info->req_ie)) ||
13803 (info->resp_ie &&
13804 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13805 info->resp_ie)) ||
13806 (info->authorized &&
13807 nla_put_flag(msg, NL80211_ATTR_PORT_AUTHORIZED)))
13808 goto nla_put_failure;
13809
13810 genlmsg_end(msg, hdr);
13811
13812 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13813 NL80211_MCGRP_MLME, gfp);
13814 return;
13815
13816 nla_put_failure:
13817 genlmsg_cancel(msg, hdr);
13818 nlmsg_free(msg);
13819 }
13820
13821 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13822 struct net_device *netdev, u16 reason,
13823 const u8 *ie, size_t ie_len, bool from_ap)
13824 {
13825 struct sk_buff *msg;
13826 void *hdr;
13827
13828 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13829 if (!msg)
13830 return;
13831
13832 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13833 if (!hdr) {
13834 nlmsg_free(msg);
13835 return;
13836 }
13837
13838 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13839 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13840 (from_ap && reason &&
13841 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13842 (from_ap &&
13843 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13844 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13845 goto nla_put_failure;
13846
13847 genlmsg_end(msg, hdr);
13848
13849 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13850 NL80211_MCGRP_MLME, GFP_KERNEL);
13851 return;
13852
13853 nla_put_failure:
13854 genlmsg_cancel(msg, hdr);
13855 nlmsg_free(msg);
13856 }
13857
13858 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13859 struct net_device *netdev, const u8 *bssid,
13860 gfp_t gfp)
13861 {
13862 struct sk_buff *msg;
13863 void *hdr;
13864
13865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13866 if (!msg)
13867 return;
13868
13869 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13870 if (!hdr) {
13871 nlmsg_free(msg);
13872 return;
13873 }
13874
13875 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13876 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13877 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13878 goto nla_put_failure;
13879
13880 genlmsg_end(msg, hdr);
13881
13882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13883 NL80211_MCGRP_MLME, gfp);
13884 return;
13885
13886 nla_put_failure:
13887 genlmsg_cancel(msg, hdr);
13888 nlmsg_free(msg);
13889 }
13890
13891 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13892 const u8* ie, u8 ie_len, gfp_t gfp)
13893 {
13894 struct wireless_dev *wdev = dev->ieee80211_ptr;
13895 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13896 struct sk_buff *msg;
13897 void *hdr;
13898
13899 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13900 return;
13901
13902 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13903
13904 msg = nlmsg_new(100 + ie_len, gfp);
13905 if (!msg)
13906 return;
13907
13908 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13909 if (!hdr) {
13910 nlmsg_free(msg);
13911 return;
13912 }
13913
13914 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13915 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13916 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13917 (ie_len && ie &&
13918 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
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);
13925 return;
13926
13927 nla_put_failure:
13928 genlmsg_cancel(msg, hdr);
13929 nlmsg_free(msg);
13930 }
13931 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13932
13933 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13934 struct net_device *netdev, const u8 *addr,
13935 enum nl80211_key_type key_type, int key_id,
13936 const u8 *tsc, gfp_t gfp)
13937 {
13938 struct sk_buff *msg;
13939 void *hdr;
13940
13941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13942 if (!msg)
13943 return;
13944
13945 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13946 if (!hdr) {
13947 nlmsg_free(msg);
13948 return;
13949 }
13950
13951 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13952 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13953 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13954 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13955 (key_id != -1 &&
13956 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13957 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13958 goto nla_put_failure;
13959
13960 genlmsg_end(msg, hdr);
13961
13962 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13963 NL80211_MCGRP_MLME, gfp);
13964 return;
13965
13966 nla_put_failure:
13967 genlmsg_cancel(msg, hdr);
13968 nlmsg_free(msg);
13969 }
13970
13971 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13972 struct ieee80211_channel *channel_before,
13973 struct ieee80211_channel *channel_after)
13974 {
13975 struct sk_buff *msg;
13976 void *hdr;
13977 struct nlattr *nl_freq;
13978
13979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13980 if (!msg)
13981 return;
13982
13983 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13984 if (!hdr) {
13985 nlmsg_free(msg);
13986 return;
13987 }
13988
13989 /*
13990 * Since we are applying the beacon hint to a wiphy we know its
13991 * wiphy_idx is valid
13992 */
13993 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13994 goto nla_put_failure;
13995
13996 /* Before */
13997 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13998 if (!nl_freq)
13999 goto nla_put_failure;
14000 if (nl80211_msg_put_channel(msg, channel_before, false))
14001 goto nla_put_failure;
14002 nla_nest_end(msg, nl_freq);
14003
14004 /* After */
14005 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14006 if (!nl_freq)
14007 goto nla_put_failure;
14008 if (nl80211_msg_put_channel(msg, channel_after, false))
14009 goto nla_put_failure;
14010 nla_nest_end(msg, nl_freq);
14011
14012 genlmsg_end(msg, hdr);
14013
14014 rcu_read_lock();
14015 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14016 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14017 rcu_read_unlock();
14018
14019 return;
14020
14021 nla_put_failure:
14022 genlmsg_cancel(msg, hdr);
14023 nlmsg_free(msg);
14024 }
14025
14026 static void nl80211_send_remain_on_chan_event(
14027 int cmd, struct cfg80211_registered_device *rdev,
14028 struct wireless_dev *wdev, u64 cookie,
14029 struct ieee80211_channel *chan,
14030 unsigned int duration, gfp_t gfp)
14031 {
14032 struct sk_buff *msg;
14033 void *hdr;
14034
14035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14036 if (!msg)
14037 return;
14038
14039 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14040 if (!hdr) {
14041 nlmsg_free(msg);
14042 return;
14043 }
14044
14045 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14046 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14047 wdev->netdev->ifindex)) ||
14048 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14049 NL80211_ATTR_PAD) ||
14050 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14051 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14052 NL80211_CHAN_NO_HT) ||
14053 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14054 NL80211_ATTR_PAD))
14055 goto nla_put_failure;
14056
14057 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14058 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14059 goto nla_put_failure;
14060
14061 genlmsg_end(msg, hdr);
14062
14063 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14064 NL80211_MCGRP_MLME, gfp);
14065 return;
14066
14067 nla_put_failure:
14068 genlmsg_cancel(msg, hdr);
14069 nlmsg_free(msg);
14070 }
14071
14072 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14073 struct ieee80211_channel *chan,
14074 unsigned int duration, gfp_t gfp)
14075 {
14076 struct wiphy *wiphy = wdev->wiphy;
14077 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14078
14079 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14080 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14081 rdev, wdev, cookie, chan,
14082 duration, gfp);
14083 }
14084 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14085
14086 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14087 struct ieee80211_channel *chan,
14088 gfp_t gfp)
14089 {
14090 struct wiphy *wiphy = wdev->wiphy;
14091 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14092
14093 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14094 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14095 rdev, wdev, cookie, chan, 0, gfp);
14096 }
14097 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14098
14099 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14100 struct station_info *sinfo, gfp_t gfp)
14101 {
14102 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14103 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14104 struct sk_buff *msg;
14105
14106 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14107
14108 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14109 if (!msg)
14110 return;
14111
14112 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14113 rdev, dev, mac_addr, sinfo) < 0) {
14114 nlmsg_free(msg);
14115 return;
14116 }
14117
14118 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14119 NL80211_MCGRP_MLME, gfp);
14120 }
14121 EXPORT_SYMBOL(cfg80211_new_sta);
14122
14123 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14124 struct station_info *sinfo, gfp_t gfp)
14125 {
14126 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14127 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14128 struct sk_buff *msg;
14129 struct station_info empty_sinfo = {};
14130
14131 if (!sinfo)
14132 sinfo = &empty_sinfo;
14133
14134 trace_cfg80211_del_sta(dev, mac_addr);
14135
14136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14137 if (!msg)
14138 return;
14139
14140 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14141 rdev, dev, mac_addr, sinfo) < 0) {
14142 nlmsg_free(msg);
14143 return;
14144 }
14145
14146 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14147 NL80211_MCGRP_MLME, gfp);
14148 }
14149 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14150
14151 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14152 enum nl80211_connect_failed_reason reason,
14153 gfp_t gfp)
14154 {
14155 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14156 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14157 struct sk_buff *msg;
14158 void *hdr;
14159
14160 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14161 if (!msg)
14162 return;
14163
14164 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14165 if (!hdr) {
14166 nlmsg_free(msg);
14167 return;
14168 }
14169
14170 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14171 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14172 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14173 goto nla_put_failure;
14174
14175 genlmsg_end(msg, hdr);
14176
14177 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14178 NL80211_MCGRP_MLME, gfp);
14179 return;
14180
14181 nla_put_failure:
14182 genlmsg_cancel(msg, hdr);
14183 nlmsg_free(msg);
14184 }
14185 EXPORT_SYMBOL(cfg80211_conn_failed);
14186
14187 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14188 const u8 *addr, gfp_t gfp)
14189 {
14190 struct wireless_dev *wdev = dev->ieee80211_ptr;
14191 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14192 struct sk_buff *msg;
14193 void *hdr;
14194 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
14195
14196 if (!nlportid)
14197 return false;
14198
14199 msg = nlmsg_new(100, gfp);
14200 if (!msg)
14201 return true;
14202
14203 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14204 if (!hdr) {
14205 nlmsg_free(msg);
14206 return true;
14207 }
14208
14209 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14210 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14211 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14212 goto nla_put_failure;
14213
14214 genlmsg_end(msg, hdr);
14215 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14216 return true;
14217
14218 nla_put_failure:
14219 genlmsg_cancel(msg, hdr);
14220 nlmsg_free(msg);
14221 return true;
14222 }
14223
14224 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14225 const u8 *addr, gfp_t gfp)
14226 {
14227 struct wireless_dev *wdev = dev->ieee80211_ptr;
14228 bool ret;
14229
14230 trace_cfg80211_rx_spurious_frame(dev, addr);
14231
14232 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14233 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14234 trace_cfg80211_return_bool(false);
14235 return false;
14236 }
14237 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14238 addr, gfp);
14239 trace_cfg80211_return_bool(ret);
14240 return ret;
14241 }
14242 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14243
14244 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14245 const u8 *addr, gfp_t gfp)
14246 {
14247 struct wireless_dev *wdev = dev->ieee80211_ptr;
14248 bool ret;
14249
14250 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14251
14252 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14253 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14254 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14255 trace_cfg80211_return_bool(false);
14256 return false;
14257 }
14258 ret = __nl80211_unexpected_frame(dev,
14259 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14260 addr, gfp);
14261 trace_cfg80211_return_bool(ret);
14262 return ret;
14263 }
14264 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14265
14266 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14267 struct wireless_dev *wdev, u32 nlportid,
14268 int freq, int sig_dbm,
14269 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14270 {
14271 struct net_device *netdev = wdev->netdev;
14272 struct sk_buff *msg;
14273 void *hdr;
14274
14275 msg = nlmsg_new(100 + len, gfp);
14276 if (!msg)
14277 return -ENOMEM;
14278
14279 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14280 if (!hdr) {
14281 nlmsg_free(msg);
14282 return -ENOMEM;
14283 }
14284
14285 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14286 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14287 netdev->ifindex)) ||
14288 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14289 NL80211_ATTR_PAD) ||
14290 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14291 (sig_dbm &&
14292 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14293 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14294 (flags &&
14295 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14296 goto nla_put_failure;
14297
14298 genlmsg_end(msg, hdr);
14299
14300 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14301
14302 nla_put_failure:
14303 genlmsg_cancel(msg, hdr);
14304 nlmsg_free(msg);
14305 return -ENOBUFS;
14306 }
14307
14308 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14309 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14310 {
14311 struct wiphy *wiphy = wdev->wiphy;
14312 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14313 struct net_device *netdev = wdev->netdev;
14314 struct sk_buff *msg;
14315 void *hdr;
14316
14317 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14318
14319 msg = nlmsg_new(100 + len, gfp);
14320 if (!msg)
14321 return;
14322
14323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14324 if (!hdr) {
14325 nlmsg_free(msg);
14326 return;
14327 }
14328
14329 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14330 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14331 netdev->ifindex)) ||
14332 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14333 NL80211_ATTR_PAD) ||
14334 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14335 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14336 NL80211_ATTR_PAD) ||
14337 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14338 goto nla_put_failure;
14339
14340 genlmsg_end(msg, hdr);
14341
14342 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14343 NL80211_MCGRP_MLME, gfp);
14344 return;
14345
14346 nla_put_failure:
14347 genlmsg_cancel(msg, hdr);
14348 nlmsg_free(msg);
14349 }
14350 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14351
14352 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14353 const char *mac, gfp_t gfp)
14354 {
14355 struct wireless_dev *wdev = dev->ieee80211_ptr;
14356 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14357 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14358 void **cb;
14359
14360 if (!msg)
14361 return NULL;
14362
14363 cb = (void **)msg->cb;
14364
14365 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14366 if (!cb[0]) {
14367 nlmsg_free(msg);
14368 return NULL;
14369 }
14370
14371 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14372 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14373 goto nla_put_failure;
14374
14375 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14376 goto nla_put_failure;
14377
14378 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14379 if (!cb[1])
14380 goto nla_put_failure;
14381
14382 cb[2] = rdev;
14383
14384 return msg;
14385 nla_put_failure:
14386 nlmsg_free(msg);
14387 return NULL;
14388 }
14389
14390 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14391 {
14392 void **cb = (void **)msg->cb;
14393 struct cfg80211_registered_device *rdev = cb[2];
14394
14395 nla_nest_end(msg, cb[1]);
14396 genlmsg_end(msg, cb[0]);
14397
14398 memset(msg->cb, 0, sizeof(msg->cb));
14399
14400 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14401 NL80211_MCGRP_MLME, gfp);
14402 }
14403
14404 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14405 enum nl80211_cqm_rssi_threshold_event rssi_event,
14406 s32 rssi_level, gfp_t gfp)
14407 {
14408 struct sk_buff *msg;
14409 struct wireless_dev *wdev = dev->ieee80211_ptr;
14410 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14411
14412 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14413
14414 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14415 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14416 return;
14417
14418 if (wdev->cqm_config) {
14419 wdev->cqm_config->last_rssi_event_value = rssi_level;
14420
14421 cfg80211_cqm_rssi_update(rdev, dev);
14422
14423 if (rssi_level == 0)
14424 rssi_level = wdev->cqm_config->last_rssi_event_value;
14425 }
14426
14427 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14428 if (!msg)
14429 return;
14430
14431 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14432 rssi_event))
14433 goto nla_put_failure;
14434
14435 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14436 rssi_level))
14437 goto nla_put_failure;
14438
14439 cfg80211_send_cqm(msg, gfp);
14440
14441 return;
14442
14443 nla_put_failure:
14444 nlmsg_free(msg);
14445 }
14446 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14447
14448 void cfg80211_cqm_txe_notify(struct net_device *dev,
14449 const u8 *peer, u32 num_packets,
14450 u32 rate, u32 intvl, gfp_t gfp)
14451 {
14452 struct sk_buff *msg;
14453
14454 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14455 if (!msg)
14456 return;
14457
14458 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14459 goto nla_put_failure;
14460
14461 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14462 goto nla_put_failure;
14463
14464 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14465 goto nla_put_failure;
14466
14467 cfg80211_send_cqm(msg, gfp);
14468 return;
14469
14470 nla_put_failure:
14471 nlmsg_free(msg);
14472 }
14473 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14474
14475 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14476 const u8 *peer, u32 num_packets, gfp_t gfp)
14477 {
14478 struct sk_buff *msg;
14479
14480 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14481
14482 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14483 if (!msg)
14484 return;
14485
14486 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14487 goto nla_put_failure;
14488
14489 cfg80211_send_cqm(msg, gfp);
14490 return;
14491
14492 nla_put_failure:
14493 nlmsg_free(msg);
14494 }
14495 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14496
14497 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14498 {
14499 struct sk_buff *msg;
14500
14501 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14502 if (!msg)
14503 return;
14504
14505 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14506 goto nla_put_failure;
14507
14508 cfg80211_send_cqm(msg, gfp);
14509 return;
14510
14511 nla_put_failure:
14512 nlmsg_free(msg);
14513 }
14514 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14515
14516 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14517 struct net_device *netdev, const u8 *bssid,
14518 const u8 *replay_ctr, gfp_t gfp)
14519 {
14520 struct sk_buff *msg;
14521 struct nlattr *rekey_attr;
14522 void *hdr;
14523
14524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14525 if (!msg)
14526 return;
14527
14528 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14529 if (!hdr) {
14530 nlmsg_free(msg);
14531 return;
14532 }
14533
14534 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14535 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14536 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14537 goto nla_put_failure;
14538
14539 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14540 if (!rekey_attr)
14541 goto nla_put_failure;
14542
14543 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14544 NL80211_REPLAY_CTR_LEN, replay_ctr))
14545 goto nla_put_failure;
14546
14547 nla_nest_end(msg, rekey_attr);
14548
14549 genlmsg_end(msg, hdr);
14550
14551 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14552 NL80211_MCGRP_MLME, gfp);
14553 return;
14554
14555 nla_put_failure:
14556 genlmsg_cancel(msg, hdr);
14557 nlmsg_free(msg);
14558 }
14559
14560 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14561 const u8 *replay_ctr, gfp_t gfp)
14562 {
14563 struct wireless_dev *wdev = dev->ieee80211_ptr;
14564 struct wiphy *wiphy = wdev->wiphy;
14565 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14566
14567 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14568 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14569 }
14570 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14571
14572 static void
14573 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14574 struct net_device *netdev, int index,
14575 const u8 *bssid, bool preauth, gfp_t gfp)
14576 {
14577 struct sk_buff *msg;
14578 struct nlattr *attr;
14579 void *hdr;
14580
14581 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14582 if (!msg)
14583 return;
14584
14585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14586 if (!hdr) {
14587 nlmsg_free(msg);
14588 return;
14589 }
14590
14591 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14592 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14593 goto nla_put_failure;
14594
14595 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14596 if (!attr)
14597 goto nla_put_failure;
14598
14599 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14600 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14601 (preauth &&
14602 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14603 goto nla_put_failure;
14604
14605 nla_nest_end(msg, attr);
14606
14607 genlmsg_end(msg, hdr);
14608
14609 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14610 NL80211_MCGRP_MLME, gfp);
14611 return;
14612
14613 nla_put_failure:
14614 genlmsg_cancel(msg, hdr);
14615 nlmsg_free(msg);
14616 }
14617
14618 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14619 const u8 *bssid, bool preauth, gfp_t gfp)
14620 {
14621 struct wireless_dev *wdev = dev->ieee80211_ptr;
14622 struct wiphy *wiphy = wdev->wiphy;
14623 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14624
14625 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14626 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14627 }
14628 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14629
14630 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14631 struct net_device *netdev,
14632 struct cfg80211_chan_def *chandef,
14633 gfp_t gfp,
14634 enum nl80211_commands notif,
14635 u8 count)
14636 {
14637 struct sk_buff *msg;
14638 void *hdr;
14639
14640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14641 if (!msg)
14642 return;
14643
14644 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14645 if (!hdr) {
14646 nlmsg_free(msg);
14647 return;
14648 }
14649
14650 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14651 goto nla_put_failure;
14652
14653 if (nl80211_send_chandef(msg, chandef))
14654 goto nla_put_failure;
14655
14656 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14657 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14658 goto nla_put_failure;
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_ch_switch_notify(struct net_device *dev,
14672 struct cfg80211_chan_def *chandef)
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 ASSERT_WDEV_LOCK(wdev);
14679
14680 trace_cfg80211_ch_switch_notify(dev, chandef);
14681
14682 wdev->chandef = *chandef;
14683 wdev->preset_chandef = *chandef;
14684 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14685 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14686 }
14687 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14688
14689 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14690 struct cfg80211_chan_def *chandef,
14691 u8 count)
14692 {
14693 struct wireless_dev *wdev = dev->ieee80211_ptr;
14694 struct wiphy *wiphy = wdev->wiphy;
14695 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14696
14697 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14698
14699 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14700 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14701 }
14702 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14703
14704 void
14705 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14706 const struct cfg80211_chan_def *chandef,
14707 enum nl80211_radar_event event,
14708 struct net_device *netdev, gfp_t gfp)
14709 {
14710 struct sk_buff *msg;
14711 void *hdr;
14712
14713 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14714 if (!msg)
14715 return;
14716
14717 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14718 if (!hdr) {
14719 nlmsg_free(msg);
14720 return;
14721 }
14722
14723 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14724 goto nla_put_failure;
14725
14726 /* NOP and radar events don't need a netdev parameter */
14727 if (netdev) {
14728 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14729
14730 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14731 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14732 NL80211_ATTR_PAD))
14733 goto nla_put_failure;
14734 }
14735
14736 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14737 goto nla_put_failure;
14738
14739 if (nl80211_send_chandef(msg, chandef))
14740 goto nla_put_failure;
14741
14742 genlmsg_end(msg, hdr);
14743
14744 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14745 NL80211_MCGRP_MLME, gfp);
14746 return;
14747
14748 nla_put_failure:
14749 genlmsg_cancel(msg, hdr);
14750 nlmsg_free(msg);
14751 }
14752
14753 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14754 u64 cookie, bool acked, gfp_t gfp)
14755 {
14756 struct wireless_dev *wdev = dev->ieee80211_ptr;
14757 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14758 struct sk_buff *msg;
14759 void *hdr;
14760
14761 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14762
14763 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14764
14765 if (!msg)
14766 return;
14767
14768 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14769 if (!hdr) {
14770 nlmsg_free(msg);
14771 return;
14772 }
14773
14774 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14775 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14776 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14777 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14778 NL80211_ATTR_PAD) ||
14779 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14780 goto nla_put_failure;
14781
14782 genlmsg_end(msg, hdr);
14783
14784 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14785 NL80211_MCGRP_MLME, gfp);
14786 return;
14787
14788 nla_put_failure:
14789 genlmsg_cancel(msg, hdr);
14790 nlmsg_free(msg);
14791 }
14792 EXPORT_SYMBOL(cfg80211_probe_status);
14793
14794 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14795 const u8 *frame, size_t len,
14796 int freq, int sig_dbm)
14797 {
14798 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14799 struct sk_buff *msg;
14800 void *hdr;
14801 struct cfg80211_beacon_registration *reg;
14802
14803 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14804
14805 spin_lock_bh(&rdev->beacon_registrations_lock);
14806 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14807 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14808 if (!msg) {
14809 spin_unlock_bh(&rdev->beacon_registrations_lock);
14810 return;
14811 }
14812
14813 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14814 if (!hdr)
14815 goto nla_put_failure;
14816
14817 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14818 (freq &&
14819 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14820 (sig_dbm &&
14821 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14822 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14823 goto nla_put_failure;
14824
14825 genlmsg_end(msg, hdr);
14826
14827 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14828 }
14829 spin_unlock_bh(&rdev->beacon_registrations_lock);
14830 return;
14831
14832 nla_put_failure:
14833 spin_unlock_bh(&rdev->beacon_registrations_lock);
14834 if (hdr)
14835 genlmsg_cancel(msg, hdr);
14836 nlmsg_free(msg);
14837 }
14838 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14839
14840 #ifdef CONFIG_PM
14841 static int cfg80211_net_detect_results(struct sk_buff *msg,
14842 struct cfg80211_wowlan_wakeup *wakeup)
14843 {
14844 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14845 struct nlattr *nl_results, *nl_match, *nl_freqs;
14846 int i, j;
14847
14848 nl_results = nla_nest_start(
14849 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14850 if (!nl_results)
14851 return -EMSGSIZE;
14852
14853 for (i = 0; i < nd->n_matches; i++) {
14854 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14855
14856 nl_match = nla_nest_start(msg, i);
14857 if (!nl_match)
14858 break;
14859
14860 /* The SSID attribute is optional in nl80211, but for
14861 * simplicity reasons it's always present in the
14862 * cfg80211 structure. If a driver can't pass the
14863 * SSID, that needs to be changed. A zero length SSID
14864 * is still a valid SSID (wildcard), so it cannot be
14865 * used for this purpose.
14866 */
14867 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14868 match->ssid.ssid)) {
14869 nla_nest_cancel(msg, nl_match);
14870 goto out;
14871 }
14872
14873 if (match->n_channels) {
14874 nl_freqs = nla_nest_start(
14875 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14876 if (!nl_freqs) {
14877 nla_nest_cancel(msg, nl_match);
14878 goto out;
14879 }
14880
14881 for (j = 0; j < match->n_channels; j++) {
14882 if (nla_put_u32(msg, j, match->channels[j])) {
14883 nla_nest_cancel(msg, nl_freqs);
14884 nla_nest_cancel(msg, nl_match);
14885 goto out;
14886 }
14887 }
14888
14889 nla_nest_end(msg, nl_freqs);
14890 }
14891
14892 nla_nest_end(msg, nl_match);
14893 }
14894
14895 out:
14896 nla_nest_end(msg, nl_results);
14897 return 0;
14898 }
14899
14900 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14901 struct cfg80211_wowlan_wakeup *wakeup,
14902 gfp_t gfp)
14903 {
14904 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14905 struct sk_buff *msg;
14906 void *hdr;
14907 int size = 200;
14908
14909 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14910
14911 if (wakeup)
14912 size += wakeup->packet_present_len;
14913
14914 msg = nlmsg_new(size, gfp);
14915 if (!msg)
14916 return;
14917
14918 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14919 if (!hdr)
14920 goto free_msg;
14921
14922 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14923 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14924 NL80211_ATTR_PAD))
14925 goto free_msg;
14926
14927 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14928 wdev->netdev->ifindex))
14929 goto free_msg;
14930
14931 if (wakeup) {
14932 struct nlattr *reasons;
14933
14934 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14935 if (!reasons)
14936 goto free_msg;
14937
14938 if (wakeup->disconnect &&
14939 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14940 goto free_msg;
14941 if (wakeup->magic_pkt &&
14942 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14943 goto free_msg;
14944 if (wakeup->gtk_rekey_failure &&
14945 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14946 goto free_msg;
14947 if (wakeup->eap_identity_req &&
14948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14949 goto free_msg;
14950 if (wakeup->four_way_handshake &&
14951 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14952 goto free_msg;
14953 if (wakeup->rfkill_release &&
14954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14955 goto free_msg;
14956
14957 if (wakeup->pattern_idx >= 0 &&
14958 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14959 wakeup->pattern_idx))
14960 goto free_msg;
14961
14962 if (wakeup->tcp_match &&
14963 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14964 goto free_msg;
14965
14966 if (wakeup->tcp_connlost &&
14967 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14968 goto free_msg;
14969
14970 if (wakeup->tcp_nomoretokens &&
14971 nla_put_flag(msg,
14972 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14973 goto free_msg;
14974
14975 if (wakeup->packet) {
14976 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14977 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14978
14979 if (!wakeup->packet_80211) {
14980 pkt_attr =
14981 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14982 len_attr =
14983 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14984 }
14985
14986 if (wakeup->packet_len &&
14987 nla_put_u32(msg, len_attr, wakeup->packet_len))
14988 goto free_msg;
14989
14990 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14991 wakeup->packet))
14992 goto free_msg;
14993 }
14994
14995 if (wakeup->net_detect &&
14996 cfg80211_net_detect_results(msg, wakeup))
14997 goto free_msg;
14998
14999 nla_nest_end(msg, reasons);
15000 }
15001
15002 genlmsg_end(msg, hdr);
15003
15004 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15005 NL80211_MCGRP_MLME, gfp);
15006 return;
15007
15008 free_msg:
15009 nlmsg_free(msg);
15010 }
15011 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15012 #endif
15013
15014 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15015 enum nl80211_tdls_operation oper,
15016 u16 reason_code, gfp_t gfp)
15017 {
15018 struct wireless_dev *wdev = dev->ieee80211_ptr;
15019 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15020 struct sk_buff *msg;
15021 void *hdr;
15022
15023 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15024 reason_code);
15025
15026 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15027 if (!msg)
15028 return;
15029
15030 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15031 if (!hdr) {
15032 nlmsg_free(msg);
15033 return;
15034 }
15035
15036 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15037 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15038 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15039 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15040 (reason_code > 0 &&
15041 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15042 goto nla_put_failure;
15043
15044 genlmsg_end(msg, hdr);
15045
15046 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15047 NL80211_MCGRP_MLME, gfp);
15048 return;
15049
15050 nla_put_failure:
15051 genlmsg_cancel(msg, hdr);
15052 nlmsg_free(msg);
15053 }
15054 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15055
15056 static int nl80211_netlink_notify(struct notifier_block * nb,
15057 unsigned long state,
15058 void *_notify)
15059 {
15060 struct netlink_notify *notify = _notify;
15061 struct cfg80211_registered_device *rdev;
15062 struct wireless_dev *wdev;
15063 struct cfg80211_beacon_registration *reg, *tmp;
15064
15065 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15066 return NOTIFY_DONE;
15067
15068 rcu_read_lock();
15069
15070 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15071 struct cfg80211_sched_scan_request *sched_scan_req;
15072
15073 list_for_each_entry_rcu(sched_scan_req,
15074 &rdev->sched_scan_req_list,
15075 list) {
15076 if (sched_scan_req->owner_nlportid == notify->portid) {
15077 sched_scan_req->nl_owner_dead = true;
15078 schedule_work(&rdev->sched_scan_stop_wk);
15079 }
15080 }
15081
15082 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15083 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15084
15085 if (wdev->owner_nlportid == notify->portid) {
15086 wdev->nl_owner_dead = true;
15087 schedule_work(&rdev->destroy_work);
15088 } else if (wdev->conn_owner_nlportid == notify->portid) {
15089 schedule_work(&wdev->disconnect_wk);
15090 }
15091 }
15092
15093 spin_lock_bh(&rdev->beacon_registrations_lock);
15094 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15095 list) {
15096 if (reg->nlportid == notify->portid) {
15097 list_del(&reg->list);
15098 kfree(reg);
15099 break;
15100 }
15101 }
15102 spin_unlock_bh(&rdev->beacon_registrations_lock);
15103 }
15104
15105 rcu_read_unlock();
15106
15107 /*
15108 * It is possible that the user space process that is controlling the
15109 * indoor setting disappeared, so notify the regulatory core.
15110 */
15111 regulatory_netlink_notify(notify->portid);
15112 return NOTIFY_OK;
15113 }
15114
15115 static struct notifier_block nl80211_netlink_notifier = {
15116 .notifier_call = nl80211_netlink_notify,
15117 };
15118
15119 void cfg80211_ft_event(struct net_device *netdev,
15120 struct cfg80211_ft_event_params *ft_event)
15121 {
15122 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15123 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15124 struct sk_buff *msg;
15125 void *hdr;
15126
15127 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15128
15129 if (!ft_event->target_ap)
15130 return;
15131
15132 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15133 if (!msg)
15134 return;
15135
15136 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15137 if (!hdr)
15138 goto out;
15139
15140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15141 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15142 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15143 goto out;
15144
15145 if (ft_event->ies &&
15146 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15147 goto out;
15148 if (ft_event->ric_ies &&
15149 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15150 ft_event->ric_ies))
15151 goto out;
15152
15153 genlmsg_end(msg, hdr);
15154
15155 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15156 NL80211_MCGRP_MLME, GFP_KERNEL);
15157 return;
15158 out:
15159 nlmsg_free(msg);
15160 }
15161 EXPORT_SYMBOL(cfg80211_ft_event);
15162
15163 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15164 {
15165 struct cfg80211_registered_device *rdev;
15166 struct sk_buff *msg;
15167 void *hdr;
15168 u32 nlportid;
15169
15170 rdev = wiphy_to_rdev(wdev->wiphy);
15171 if (!rdev->crit_proto_nlportid)
15172 return;
15173
15174 nlportid = rdev->crit_proto_nlportid;
15175 rdev->crit_proto_nlportid = 0;
15176
15177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15178 if (!msg)
15179 return;
15180
15181 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15182 if (!hdr)
15183 goto nla_put_failure;
15184
15185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15186 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15187 NL80211_ATTR_PAD))
15188 goto nla_put_failure;
15189
15190 genlmsg_end(msg, hdr);
15191
15192 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15193 return;
15194
15195 nla_put_failure:
15196 if (hdr)
15197 genlmsg_cancel(msg, hdr);
15198 nlmsg_free(msg);
15199 }
15200 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15201
15202 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15203 {
15204 struct wiphy *wiphy = wdev->wiphy;
15205 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15206 struct sk_buff *msg;
15207 void *hdr;
15208
15209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15210 if (!msg)
15211 return;
15212
15213 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15214 if (!hdr)
15215 goto out;
15216
15217 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15218 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15219 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15220 NL80211_ATTR_PAD))
15221 goto out;
15222
15223 genlmsg_end(msg, hdr);
15224
15225 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15226 NL80211_MCGRP_MLME, GFP_KERNEL);
15227 return;
15228 out:
15229 nlmsg_free(msg);
15230 }
15231
15232 /* initialisation/exit functions */
15233
15234 int __init nl80211_init(void)
15235 {
15236 int err;
15237
15238 err = genl_register_family(&nl80211_fam);
15239 if (err)
15240 return err;
15241
15242 err = netlink_register_notifier(&nl80211_netlink_notifier);
15243 if (err)
15244 goto err_out;
15245
15246 return 0;
15247 err_out:
15248 genl_unregister_family(&nl80211_fam);
15249 return err;
15250 }
15251
15252 void nl80211_exit(void)
15253 {
15254 netlink_unregister_notifier(&nl80211_netlink_notifier);
15255 genl_unregister_family(&nl80211_fam);
15256 }
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