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Merge tag 'fbdev-v4.13' of git://github.com/bzolnier/linux
[mirror_ubuntu-artful-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->beacon_ies_len;
3795 const u8 *ies = bcn->beacon_ies;
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 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9991 &setup.beacon_rate);
9992 if (err)
9993 return err;
9994 }
9995
9996 setup.userspace_handles_dfs =
9997 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9998
9999 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10000 }
10001
10002 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10003 {
10004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10005 struct net_device *dev = info->user_ptr[1];
10006
10007 return cfg80211_leave_mesh(rdev, dev);
10008 }
10009
10010 #ifdef CONFIG_PM
10011 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10012 struct cfg80211_registered_device *rdev)
10013 {
10014 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10015 struct nlattr *nl_pats, *nl_pat;
10016 int i, pat_len;
10017
10018 if (!wowlan->n_patterns)
10019 return 0;
10020
10021 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10022 if (!nl_pats)
10023 return -ENOBUFS;
10024
10025 for (i = 0; i < wowlan->n_patterns; i++) {
10026 nl_pat = nla_nest_start(msg, i + 1);
10027 if (!nl_pat)
10028 return -ENOBUFS;
10029 pat_len = wowlan->patterns[i].pattern_len;
10030 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10031 wowlan->patterns[i].mask) ||
10032 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10033 wowlan->patterns[i].pattern) ||
10034 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10035 wowlan->patterns[i].pkt_offset))
10036 return -ENOBUFS;
10037 nla_nest_end(msg, nl_pat);
10038 }
10039 nla_nest_end(msg, nl_pats);
10040
10041 return 0;
10042 }
10043
10044 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10045 struct cfg80211_wowlan_tcp *tcp)
10046 {
10047 struct nlattr *nl_tcp;
10048
10049 if (!tcp)
10050 return 0;
10051
10052 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10053 if (!nl_tcp)
10054 return -ENOBUFS;
10055
10056 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10057 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10058 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10059 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10060 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10061 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10062 tcp->payload_len, tcp->payload) ||
10063 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10064 tcp->data_interval) ||
10065 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10066 tcp->wake_len, tcp->wake_data) ||
10067 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10068 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10069 return -ENOBUFS;
10070
10071 if (tcp->payload_seq.len &&
10072 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10073 sizeof(tcp->payload_seq), &tcp->payload_seq))
10074 return -ENOBUFS;
10075
10076 if (tcp->payload_tok.len &&
10077 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10078 sizeof(tcp->payload_tok) + tcp->tokens_size,
10079 &tcp->payload_tok))
10080 return -ENOBUFS;
10081
10082 nla_nest_end(msg, nl_tcp);
10083
10084 return 0;
10085 }
10086
10087 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10088 struct cfg80211_sched_scan_request *req)
10089 {
10090 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10091 int i;
10092
10093 if (!req)
10094 return 0;
10095
10096 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10097 if (!nd)
10098 return -ENOBUFS;
10099
10100 if (req->n_scan_plans == 1 &&
10101 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10102 req->scan_plans[0].interval * 1000))
10103 return -ENOBUFS;
10104
10105 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10106 return -ENOBUFS;
10107
10108 if (req->relative_rssi_set) {
10109 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10110
10111 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10112 req->relative_rssi))
10113 return -ENOBUFS;
10114
10115 rssi_adjust.band = req->rssi_adjust.band;
10116 rssi_adjust.delta = req->rssi_adjust.delta;
10117 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10118 sizeof(rssi_adjust), &rssi_adjust))
10119 return -ENOBUFS;
10120 }
10121
10122 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10123 if (!freqs)
10124 return -ENOBUFS;
10125
10126 for (i = 0; i < req->n_channels; i++) {
10127 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10128 return -ENOBUFS;
10129 }
10130
10131 nla_nest_end(msg, freqs);
10132
10133 if (req->n_match_sets) {
10134 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10135 if (!matches)
10136 return -ENOBUFS;
10137
10138 for (i = 0; i < req->n_match_sets; i++) {
10139 match = nla_nest_start(msg, i);
10140 if (!match)
10141 return -ENOBUFS;
10142
10143 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10144 req->match_sets[i].ssid.ssid_len,
10145 req->match_sets[i].ssid.ssid))
10146 return -ENOBUFS;
10147 nla_nest_end(msg, match);
10148 }
10149 nla_nest_end(msg, matches);
10150 }
10151
10152 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10153 if (!scan_plans)
10154 return -ENOBUFS;
10155
10156 for (i = 0; i < req->n_scan_plans; i++) {
10157 scan_plan = nla_nest_start(msg, i + 1);
10158 if (!scan_plan)
10159 return -ENOBUFS;
10160
10161 if (!scan_plan ||
10162 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10163 req->scan_plans[i].interval) ||
10164 (req->scan_plans[i].iterations &&
10165 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10166 req->scan_plans[i].iterations)))
10167 return -ENOBUFS;
10168 nla_nest_end(msg, scan_plan);
10169 }
10170 nla_nest_end(msg, scan_plans);
10171
10172 nla_nest_end(msg, nd);
10173
10174 return 0;
10175 }
10176
10177 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10178 {
10179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10180 struct sk_buff *msg;
10181 void *hdr;
10182 u32 size = NLMSG_DEFAULT_SIZE;
10183
10184 if (!rdev->wiphy.wowlan)
10185 return -EOPNOTSUPP;
10186
10187 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10188 /* adjust size to have room for all the data */
10189 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10190 rdev->wiphy.wowlan_config->tcp->payload_len +
10191 rdev->wiphy.wowlan_config->tcp->wake_len +
10192 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10193 }
10194
10195 msg = nlmsg_new(size, GFP_KERNEL);
10196 if (!msg)
10197 return -ENOMEM;
10198
10199 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10200 NL80211_CMD_GET_WOWLAN);
10201 if (!hdr)
10202 goto nla_put_failure;
10203
10204 if (rdev->wiphy.wowlan_config) {
10205 struct nlattr *nl_wowlan;
10206
10207 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10208 if (!nl_wowlan)
10209 goto nla_put_failure;
10210
10211 if ((rdev->wiphy.wowlan_config->any &&
10212 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10213 (rdev->wiphy.wowlan_config->disconnect &&
10214 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10215 (rdev->wiphy.wowlan_config->magic_pkt &&
10216 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10217 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10218 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10219 (rdev->wiphy.wowlan_config->eap_identity_req &&
10220 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10221 (rdev->wiphy.wowlan_config->four_way_handshake &&
10222 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10223 (rdev->wiphy.wowlan_config->rfkill_release &&
10224 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10225 goto nla_put_failure;
10226
10227 if (nl80211_send_wowlan_patterns(msg, rdev))
10228 goto nla_put_failure;
10229
10230 if (nl80211_send_wowlan_tcp(msg,
10231 rdev->wiphy.wowlan_config->tcp))
10232 goto nla_put_failure;
10233
10234 if (nl80211_send_wowlan_nd(
10235 msg,
10236 rdev->wiphy.wowlan_config->nd_config))
10237 goto nla_put_failure;
10238
10239 nla_nest_end(msg, nl_wowlan);
10240 }
10241
10242 genlmsg_end(msg, hdr);
10243 return genlmsg_reply(msg, info);
10244
10245 nla_put_failure:
10246 nlmsg_free(msg);
10247 return -ENOBUFS;
10248 }
10249
10250 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10251 struct nlattr *attr,
10252 struct cfg80211_wowlan *trig)
10253 {
10254 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10255 struct cfg80211_wowlan_tcp *cfg;
10256 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10257 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10258 u32 size;
10259 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10260 int err, port;
10261
10262 if (!rdev->wiphy.wowlan->tcp)
10263 return -EINVAL;
10264
10265 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10266 nl80211_wowlan_tcp_policy, NULL);
10267 if (err)
10268 return err;
10269
10270 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10271 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10272 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10273 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10274 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10275 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10276 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10277 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10278 return -EINVAL;
10279
10280 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10281 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10282 return -EINVAL;
10283
10284 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10285 rdev->wiphy.wowlan->tcp->data_interval_max ||
10286 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10287 return -EINVAL;
10288
10289 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10290 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10291 return -EINVAL;
10292
10293 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10294 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10295 return -EINVAL;
10296
10297 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10298 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10299
10300 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10301 tokens_size = tokln - sizeof(*tok);
10302
10303 if (!tok->len || tokens_size % tok->len)
10304 return -EINVAL;
10305 if (!rdev->wiphy.wowlan->tcp->tok)
10306 return -EINVAL;
10307 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10308 return -EINVAL;
10309 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10310 return -EINVAL;
10311 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10312 return -EINVAL;
10313 if (tok->offset + tok->len > data_size)
10314 return -EINVAL;
10315 }
10316
10317 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10318 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10319 if (!rdev->wiphy.wowlan->tcp->seq)
10320 return -EINVAL;
10321 if (seq->len == 0 || seq->len > 4)
10322 return -EINVAL;
10323 if (seq->len + seq->offset > data_size)
10324 return -EINVAL;
10325 }
10326
10327 size = sizeof(*cfg);
10328 size += data_size;
10329 size += wake_size + wake_mask_size;
10330 size += tokens_size;
10331
10332 cfg = kzalloc(size, GFP_KERNEL);
10333 if (!cfg)
10334 return -ENOMEM;
10335 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10336 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10337 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10338 ETH_ALEN);
10339 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10340 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10341 else
10342 port = 0;
10343 #ifdef CONFIG_INET
10344 /* allocate a socket and port for it and use it */
10345 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10346 IPPROTO_TCP, &cfg->sock, 1);
10347 if (err) {
10348 kfree(cfg);
10349 return err;
10350 }
10351 if (inet_csk_get_port(cfg->sock->sk, port)) {
10352 sock_release(cfg->sock);
10353 kfree(cfg);
10354 return -EADDRINUSE;
10355 }
10356 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10357 #else
10358 if (!port) {
10359 kfree(cfg);
10360 return -EINVAL;
10361 }
10362 cfg->src_port = port;
10363 #endif
10364
10365 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10366 cfg->payload_len = data_size;
10367 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10368 memcpy((void *)cfg->payload,
10369 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10370 data_size);
10371 if (seq)
10372 cfg->payload_seq = *seq;
10373 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10374 cfg->wake_len = wake_size;
10375 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10376 memcpy((void *)cfg->wake_data,
10377 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10378 wake_size);
10379 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10380 data_size + wake_size;
10381 memcpy((void *)cfg->wake_mask,
10382 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10383 wake_mask_size);
10384 if (tok) {
10385 cfg->tokens_size = tokens_size;
10386 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10387 }
10388
10389 trig->tcp = cfg;
10390
10391 return 0;
10392 }
10393
10394 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10395 const struct wiphy_wowlan_support *wowlan,
10396 struct nlattr *attr,
10397 struct cfg80211_wowlan *trig)
10398 {
10399 struct nlattr **tb;
10400 int err;
10401
10402 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10403 if (!tb)
10404 return -ENOMEM;
10405
10406 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10407 err = -EOPNOTSUPP;
10408 goto out;
10409 }
10410
10411 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10412 NULL);
10413 if (err)
10414 goto out;
10415
10416 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10417 wowlan->max_nd_match_sets);
10418 err = PTR_ERR_OR_ZERO(trig->nd_config);
10419 if (err)
10420 trig->nd_config = NULL;
10421
10422 out:
10423 kfree(tb);
10424 return err;
10425 }
10426
10427 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10428 {
10429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10430 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10431 struct cfg80211_wowlan new_triggers = {};
10432 struct cfg80211_wowlan *ntrig;
10433 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10434 int err, i;
10435 bool prev_enabled = rdev->wiphy.wowlan_config;
10436 bool regular = false;
10437
10438 if (!wowlan)
10439 return -EOPNOTSUPP;
10440
10441 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10442 cfg80211_rdev_free_wowlan(rdev);
10443 rdev->wiphy.wowlan_config = NULL;
10444 goto set_wakeup;
10445 }
10446
10447 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10448 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10449 nl80211_wowlan_policy, info->extack);
10450 if (err)
10451 return err;
10452
10453 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10454 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10455 return -EINVAL;
10456 new_triggers.any = true;
10457 }
10458
10459 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10460 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10461 return -EINVAL;
10462 new_triggers.disconnect = true;
10463 regular = true;
10464 }
10465
10466 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10467 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10468 return -EINVAL;
10469 new_triggers.magic_pkt = true;
10470 regular = true;
10471 }
10472
10473 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10474 return -EINVAL;
10475
10476 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10477 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10478 return -EINVAL;
10479 new_triggers.gtk_rekey_failure = true;
10480 regular = true;
10481 }
10482
10483 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10484 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10485 return -EINVAL;
10486 new_triggers.eap_identity_req = true;
10487 regular = true;
10488 }
10489
10490 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10491 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10492 return -EINVAL;
10493 new_triggers.four_way_handshake = true;
10494 regular = true;
10495 }
10496
10497 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10498 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10499 return -EINVAL;
10500 new_triggers.rfkill_release = true;
10501 regular = true;
10502 }
10503
10504 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10505 struct nlattr *pat;
10506 int n_patterns = 0;
10507 int rem, pat_len, mask_len, pkt_offset;
10508 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10509
10510 regular = true;
10511
10512 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10513 rem)
10514 n_patterns++;
10515 if (n_patterns > wowlan->n_patterns)
10516 return -EINVAL;
10517
10518 new_triggers.patterns = kcalloc(n_patterns,
10519 sizeof(new_triggers.patterns[0]),
10520 GFP_KERNEL);
10521 if (!new_triggers.patterns)
10522 return -ENOMEM;
10523
10524 new_triggers.n_patterns = n_patterns;
10525 i = 0;
10526
10527 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10528 rem) {
10529 u8 *mask_pat;
10530
10531 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10532 NULL, info->extack);
10533 err = -EINVAL;
10534 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10535 !pat_tb[NL80211_PKTPAT_PATTERN])
10536 goto error;
10537 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10538 mask_len = DIV_ROUND_UP(pat_len, 8);
10539 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10540 goto error;
10541 if (pat_len > wowlan->pattern_max_len ||
10542 pat_len < wowlan->pattern_min_len)
10543 goto error;
10544
10545 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10546 pkt_offset = 0;
10547 else
10548 pkt_offset = nla_get_u32(
10549 pat_tb[NL80211_PKTPAT_OFFSET]);
10550 if (pkt_offset > wowlan->max_pkt_offset)
10551 goto error;
10552 new_triggers.patterns[i].pkt_offset = pkt_offset;
10553
10554 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10555 if (!mask_pat) {
10556 err = -ENOMEM;
10557 goto error;
10558 }
10559 new_triggers.patterns[i].mask = mask_pat;
10560 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10561 mask_len);
10562 mask_pat += mask_len;
10563 new_triggers.patterns[i].pattern = mask_pat;
10564 new_triggers.patterns[i].pattern_len = pat_len;
10565 memcpy(mask_pat,
10566 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10567 pat_len);
10568 i++;
10569 }
10570 }
10571
10572 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10573 regular = true;
10574 err = nl80211_parse_wowlan_tcp(
10575 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10576 &new_triggers);
10577 if (err)
10578 goto error;
10579 }
10580
10581 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10582 regular = true;
10583 err = nl80211_parse_wowlan_nd(
10584 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10585 &new_triggers);
10586 if (err)
10587 goto error;
10588 }
10589
10590 /* The 'any' trigger means the device continues operating more or less
10591 * as in its normal operation mode and wakes up the host on most of the
10592 * normal interrupts (like packet RX, ...)
10593 * It therefore makes little sense to combine with the more constrained
10594 * wakeup trigger modes.
10595 */
10596 if (new_triggers.any && regular) {
10597 err = -EINVAL;
10598 goto error;
10599 }
10600
10601 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10602 if (!ntrig) {
10603 err = -ENOMEM;
10604 goto error;
10605 }
10606 cfg80211_rdev_free_wowlan(rdev);
10607 rdev->wiphy.wowlan_config = ntrig;
10608
10609 set_wakeup:
10610 if (rdev->ops->set_wakeup &&
10611 prev_enabled != !!rdev->wiphy.wowlan_config)
10612 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10613
10614 return 0;
10615 error:
10616 for (i = 0; i < new_triggers.n_patterns; i++)
10617 kfree(new_triggers.patterns[i].mask);
10618 kfree(new_triggers.patterns);
10619 if (new_triggers.tcp && new_triggers.tcp->sock)
10620 sock_release(new_triggers.tcp->sock);
10621 kfree(new_triggers.tcp);
10622 kfree(new_triggers.nd_config);
10623 return err;
10624 }
10625 #endif
10626
10627 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10628 struct cfg80211_registered_device *rdev)
10629 {
10630 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10631 int i, j, pat_len;
10632 struct cfg80211_coalesce_rules *rule;
10633
10634 if (!rdev->coalesce->n_rules)
10635 return 0;
10636
10637 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10638 if (!nl_rules)
10639 return -ENOBUFS;
10640
10641 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10642 nl_rule = nla_nest_start(msg, i + 1);
10643 if (!nl_rule)
10644 return -ENOBUFS;
10645
10646 rule = &rdev->coalesce->rules[i];
10647 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10648 rule->delay))
10649 return -ENOBUFS;
10650
10651 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10652 rule->condition))
10653 return -ENOBUFS;
10654
10655 nl_pats = nla_nest_start(msg,
10656 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10657 if (!nl_pats)
10658 return -ENOBUFS;
10659
10660 for (j = 0; j < rule->n_patterns; j++) {
10661 nl_pat = nla_nest_start(msg, j + 1);
10662 if (!nl_pat)
10663 return -ENOBUFS;
10664 pat_len = rule->patterns[j].pattern_len;
10665 if (nla_put(msg, NL80211_PKTPAT_MASK,
10666 DIV_ROUND_UP(pat_len, 8),
10667 rule->patterns[j].mask) ||
10668 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10669 rule->patterns[j].pattern) ||
10670 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10671 rule->patterns[j].pkt_offset))
10672 return -ENOBUFS;
10673 nla_nest_end(msg, nl_pat);
10674 }
10675 nla_nest_end(msg, nl_pats);
10676 nla_nest_end(msg, nl_rule);
10677 }
10678 nla_nest_end(msg, nl_rules);
10679
10680 return 0;
10681 }
10682
10683 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10684 {
10685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10686 struct sk_buff *msg;
10687 void *hdr;
10688
10689 if (!rdev->wiphy.coalesce)
10690 return -EOPNOTSUPP;
10691
10692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10693 if (!msg)
10694 return -ENOMEM;
10695
10696 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10697 NL80211_CMD_GET_COALESCE);
10698 if (!hdr)
10699 goto nla_put_failure;
10700
10701 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10702 goto nla_put_failure;
10703
10704 genlmsg_end(msg, hdr);
10705 return genlmsg_reply(msg, info);
10706
10707 nla_put_failure:
10708 nlmsg_free(msg);
10709 return -ENOBUFS;
10710 }
10711
10712 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10713 {
10714 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10715 int i, j;
10716 struct cfg80211_coalesce_rules *rule;
10717
10718 if (!coalesce)
10719 return;
10720
10721 for (i = 0; i < coalesce->n_rules; i++) {
10722 rule = &coalesce->rules[i];
10723 for (j = 0; j < rule->n_patterns; j++)
10724 kfree(rule->patterns[j].mask);
10725 kfree(rule->patterns);
10726 }
10727 kfree(coalesce->rules);
10728 kfree(coalesce);
10729 rdev->coalesce = NULL;
10730 }
10731
10732 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10733 struct nlattr *rule,
10734 struct cfg80211_coalesce_rules *new_rule)
10735 {
10736 int err, i;
10737 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10738 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10739 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10740 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10741
10742 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10743 nl80211_coalesce_policy, NULL);
10744 if (err)
10745 return err;
10746
10747 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10748 new_rule->delay =
10749 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10750 if (new_rule->delay > coalesce->max_delay)
10751 return -EINVAL;
10752
10753 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10754 new_rule->condition =
10755 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10756 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10757 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10758 return -EINVAL;
10759
10760 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10761 return -EINVAL;
10762
10763 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10764 rem)
10765 n_patterns++;
10766 if (n_patterns > coalesce->n_patterns)
10767 return -EINVAL;
10768
10769 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10770 GFP_KERNEL);
10771 if (!new_rule->patterns)
10772 return -ENOMEM;
10773
10774 new_rule->n_patterns = n_patterns;
10775 i = 0;
10776
10777 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10778 rem) {
10779 u8 *mask_pat;
10780
10781 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL, NULL);
10782 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10783 !pat_tb[NL80211_PKTPAT_PATTERN])
10784 return -EINVAL;
10785 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10786 mask_len = DIV_ROUND_UP(pat_len, 8);
10787 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10788 return -EINVAL;
10789 if (pat_len > coalesce->pattern_max_len ||
10790 pat_len < coalesce->pattern_min_len)
10791 return -EINVAL;
10792
10793 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10794 pkt_offset = 0;
10795 else
10796 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10797 if (pkt_offset > coalesce->max_pkt_offset)
10798 return -EINVAL;
10799 new_rule->patterns[i].pkt_offset = pkt_offset;
10800
10801 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10802 if (!mask_pat)
10803 return -ENOMEM;
10804
10805 new_rule->patterns[i].mask = mask_pat;
10806 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10807 mask_len);
10808
10809 mask_pat += mask_len;
10810 new_rule->patterns[i].pattern = mask_pat;
10811 new_rule->patterns[i].pattern_len = pat_len;
10812 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10813 pat_len);
10814 i++;
10815 }
10816
10817 return 0;
10818 }
10819
10820 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10821 {
10822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10823 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10824 struct cfg80211_coalesce new_coalesce = {};
10825 struct cfg80211_coalesce *n_coalesce;
10826 int err, rem_rule, n_rules = 0, i, j;
10827 struct nlattr *rule;
10828 struct cfg80211_coalesce_rules *tmp_rule;
10829
10830 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10831 return -EOPNOTSUPP;
10832
10833 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10834 cfg80211_rdev_free_coalesce(rdev);
10835 rdev_set_coalesce(rdev, NULL);
10836 return 0;
10837 }
10838
10839 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10840 rem_rule)
10841 n_rules++;
10842 if (n_rules > coalesce->n_rules)
10843 return -EINVAL;
10844
10845 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10846 GFP_KERNEL);
10847 if (!new_coalesce.rules)
10848 return -ENOMEM;
10849
10850 new_coalesce.n_rules = n_rules;
10851 i = 0;
10852
10853 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10854 rem_rule) {
10855 err = nl80211_parse_coalesce_rule(rdev, rule,
10856 &new_coalesce.rules[i]);
10857 if (err)
10858 goto error;
10859
10860 i++;
10861 }
10862
10863 err = rdev_set_coalesce(rdev, &new_coalesce);
10864 if (err)
10865 goto error;
10866
10867 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10868 if (!n_coalesce) {
10869 err = -ENOMEM;
10870 goto error;
10871 }
10872 cfg80211_rdev_free_coalesce(rdev);
10873 rdev->coalesce = n_coalesce;
10874
10875 return 0;
10876 error:
10877 for (i = 0; i < new_coalesce.n_rules; i++) {
10878 tmp_rule = &new_coalesce.rules[i];
10879 for (j = 0; j < tmp_rule->n_patterns; j++)
10880 kfree(tmp_rule->patterns[j].mask);
10881 kfree(tmp_rule->patterns);
10882 }
10883 kfree(new_coalesce.rules);
10884
10885 return err;
10886 }
10887
10888 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10889 {
10890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10891 struct net_device *dev = info->user_ptr[1];
10892 struct wireless_dev *wdev = dev->ieee80211_ptr;
10893 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10894 struct cfg80211_gtk_rekey_data rekey_data;
10895 int err;
10896
10897 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10898 return -EINVAL;
10899
10900 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10901 info->attrs[NL80211_ATTR_REKEY_DATA],
10902 nl80211_rekey_policy, info->extack);
10903 if (err)
10904 return err;
10905
10906 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10907 return -ERANGE;
10908 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10909 return -ERANGE;
10910 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10911 return -ERANGE;
10912
10913 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10914 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10915 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10916
10917 wdev_lock(wdev);
10918 if (!wdev->current_bss) {
10919 err = -ENOTCONN;
10920 goto out;
10921 }
10922
10923 if (!rdev->ops->set_rekey_data) {
10924 err = -EOPNOTSUPP;
10925 goto out;
10926 }
10927
10928 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10929 out:
10930 wdev_unlock(wdev);
10931 return err;
10932 }
10933
10934 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10935 struct genl_info *info)
10936 {
10937 struct net_device *dev = info->user_ptr[1];
10938 struct wireless_dev *wdev = dev->ieee80211_ptr;
10939
10940 if (wdev->iftype != NL80211_IFTYPE_AP &&
10941 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10942 return -EINVAL;
10943
10944 if (wdev->ap_unexpected_nlportid)
10945 return -EBUSY;
10946
10947 wdev->ap_unexpected_nlportid = info->snd_portid;
10948 return 0;
10949 }
10950
10951 static int nl80211_probe_client(struct sk_buff *skb,
10952 struct genl_info *info)
10953 {
10954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10955 struct net_device *dev = info->user_ptr[1];
10956 struct wireless_dev *wdev = dev->ieee80211_ptr;
10957 struct sk_buff *msg;
10958 void *hdr;
10959 const u8 *addr;
10960 u64 cookie;
10961 int err;
10962
10963 if (wdev->iftype != NL80211_IFTYPE_AP &&
10964 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10965 return -EOPNOTSUPP;
10966
10967 if (!info->attrs[NL80211_ATTR_MAC])
10968 return -EINVAL;
10969
10970 if (!rdev->ops->probe_client)
10971 return -EOPNOTSUPP;
10972
10973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10974 if (!msg)
10975 return -ENOMEM;
10976
10977 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10978 NL80211_CMD_PROBE_CLIENT);
10979 if (!hdr) {
10980 err = -ENOBUFS;
10981 goto free_msg;
10982 }
10983
10984 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10985
10986 err = rdev_probe_client(rdev, dev, addr, &cookie);
10987 if (err)
10988 goto free_msg;
10989
10990 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10991 NL80211_ATTR_PAD))
10992 goto nla_put_failure;
10993
10994 genlmsg_end(msg, hdr);
10995
10996 return genlmsg_reply(msg, info);
10997
10998 nla_put_failure:
10999 err = -ENOBUFS;
11000 free_msg:
11001 nlmsg_free(msg);
11002 return err;
11003 }
11004
11005 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11006 {
11007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11008 struct cfg80211_beacon_registration *reg, *nreg;
11009 int rv;
11010
11011 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11012 return -EOPNOTSUPP;
11013
11014 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11015 if (!nreg)
11016 return -ENOMEM;
11017
11018 /* First, check if already registered. */
11019 spin_lock_bh(&rdev->beacon_registrations_lock);
11020 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11021 if (reg->nlportid == info->snd_portid) {
11022 rv = -EALREADY;
11023 goto out_err;
11024 }
11025 }
11026 /* Add it to the list */
11027 nreg->nlportid = info->snd_portid;
11028 list_add(&nreg->list, &rdev->beacon_registrations);
11029
11030 spin_unlock_bh(&rdev->beacon_registrations_lock);
11031
11032 return 0;
11033 out_err:
11034 spin_unlock_bh(&rdev->beacon_registrations_lock);
11035 kfree(nreg);
11036 return rv;
11037 }
11038
11039 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11040 {
11041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11042 struct wireless_dev *wdev = info->user_ptr[1];
11043 int err;
11044
11045 if (!rdev->ops->start_p2p_device)
11046 return -EOPNOTSUPP;
11047
11048 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11049 return -EOPNOTSUPP;
11050
11051 if (wdev_running(wdev))
11052 return 0;
11053
11054 if (rfkill_blocked(rdev->rfkill))
11055 return -ERFKILL;
11056
11057 err = rdev_start_p2p_device(rdev, wdev);
11058 if (err)
11059 return err;
11060
11061 wdev->is_running = true;
11062 rdev->opencount++;
11063
11064 return 0;
11065 }
11066
11067 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11068 {
11069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11070 struct wireless_dev *wdev = info->user_ptr[1];
11071
11072 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11073 return -EOPNOTSUPP;
11074
11075 if (!rdev->ops->stop_p2p_device)
11076 return -EOPNOTSUPP;
11077
11078 cfg80211_stop_p2p_device(rdev, wdev);
11079
11080 return 0;
11081 }
11082
11083 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11084 {
11085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11086 struct wireless_dev *wdev = info->user_ptr[1];
11087 struct cfg80211_nan_conf conf = {};
11088 int err;
11089
11090 if (wdev->iftype != NL80211_IFTYPE_NAN)
11091 return -EOPNOTSUPP;
11092
11093 if (wdev_running(wdev))
11094 return -EEXIST;
11095
11096 if (rfkill_blocked(rdev->rfkill))
11097 return -ERFKILL;
11098
11099 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11100 return -EINVAL;
11101
11102 conf.master_pref =
11103 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11104 if (!conf.master_pref)
11105 return -EINVAL;
11106
11107 if (info->attrs[NL80211_ATTR_BANDS]) {
11108 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11109
11110 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11111 return -EOPNOTSUPP;
11112
11113 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11114 return -EINVAL;
11115
11116 conf.bands = bands;
11117 }
11118
11119 err = rdev_start_nan(rdev, wdev, &conf);
11120 if (err)
11121 return err;
11122
11123 wdev->is_running = true;
11124 rdev->opencount++;
11125
11126 return 0;
11127 }
11128
11129 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11130 {
11131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11132 struct wireless_dev *wdev = info->user_ptr[1];
11133
11134 if (wdev->iftype != NL80211_IFTYPE_NAN)
11135 return -EOPNOTSUPP;
11136
11137 cfg80211_stop_nan(rdev, wdev);
11138
11139 return 0;
11140 }
11141
11142 static int validate_nan_filter(struct nlattr *filter_attr)
11143 {
11144 struct nlattr *attr;
11145 int len = 0, n_entries = 0, rem;
11146
11147 nla_for_each_nested(attr, filter_attr, rem) {
11148 len += nla_len(attr);
11149 n_entries++;
11150 }
11151
11152 if (len >= U8_MAX)
11153 return -EINVAL;
11154
11155 return n_entries;
11156 }
11157
11158 static int handle_nan_filter(struct nlattr *attr_filter,
11159 struct cfg80211_nan_func *func,
11160 bool tx)
11161 {
11162 struct nlattr *attr;
11163 int n_entries, rem, i;
11164 struct cfg80211_nan_func_filter *filter;
11165
11166 n_entries = validate_nan_filter(attr_filter);
11167 if (n_entries < 0)
11168 return n_entries;
11169
11170 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11171
11172 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11173 if (!filter)
11174 return -ENOMEM;
11175
11176 i = 0;
11177 nla_for_each_nested(attr, attr_filter, rem) {
11178 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11179 filter[i].len = nla_len(attr);
11180 i++;
11181 }
11182 if (tx) {
11183 func->num_tx_filters = n_entries;
11184 func->tx_filters = filter;
11185 } else {
11186 func->num_rx_filters = n_entries;
11187 func->rx_filters = filter;
11188 }
11189
11190 return 0;
11191 }
11192
11193 static int nl80211_nan_add_func(struct sk_buff *skb,
11194 struct genl_info *info)
11195 {
11196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11197 struct wireless_dev *wdev = info->user_ptr[1];
11198 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11199 struct cfg80211_nan_func *func;
11200 struct sk_buff *msg = NULL;
11201 void *hdr = NULL;
11202 int err = 0;
11203
11204 if (wdev->iftype != NL80211_IFTYPE_NAN)
11205 return -EOPNOTSUPP;
11206
11207 if (!wdev_running(wdev))
11208 return -ENOTCONN;
11209
11210 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11211 return -EINVAL;
11212
11213 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11214 info->attrs[NL80211_ATTR_NAN_FUNC],
11215 nl80211_nan_func_policy, info->extack);
11216 if (err)
11217 return err;
11218
11219 func = kzalloc(sizeof(*func), GFP_KERNEL);
11220 if (!func)
11221 return -ENOMEM;
11222
11223 func->cookie = wdev->wiphy->cookie_counter++;
11224
11225 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11226 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11227 err = -EINVAL;
11228 goto out;
11229 }
11230
11231
11232 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11233
11234 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11235 err = -EINVAL;
11236 goto out;
11237 }
11238
11239 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11240 sizeof(func->service_id));
11241
11242 func->close_range =
11243 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11244
11245 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11246 func->serv_spec_info_len =
11247 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11248 func->serv_spec_info =
11249 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11250 func->serv_spec_info_len,
11251 GFP_KERNEL);
11252 if (!func->serv_spec_info) {
11253 err = -ENOMEM;
11254 goto out;
11255 }
11256 }
11257
11258 if (tb[NL80211_NAN_FUNC_TTL])
11259 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11260
11261 switch (func->type) {
11262 case NL80211_NAN_FUNC_PUBLISH:
11263 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11264 err = -EINVAL;
11265 goto out;
11266 }
11267
11268 func->publish_type =
11269 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11270 func->publish_bcast =
11271 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11272
11273 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11274 func->publish_bcast) {
11275 err = -EINVAL;
11276 goto out;
11277 }
11278 break;
11279 case NL80211_NAN_FUNC_SUBSCRIBE:
11280 func->subscribe_active =
11281 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11282 break;
11283 case NL80211_NAN_FUNC_FOLLOW_UP:
11284 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11285 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
11286 err = -EINVAL;
11287 goto out;
11288 }
11289
11290 func->followup_id =
11291 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11292 func->followup_reqid =
11293 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11294 memcpy(func->followup_dest.addr,
11295 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11296 sizeof(func->followup_dest.addr));
11297 if (func->ttl) {
11298 err = -EINVAL;
11299 goto out;
11300 }
11301 break;
11302 default:
11303 err = -EINVAL;
11304 goto out;
11305 }
11306
11307 if (tb[NL80211_NAN_FUNC_SRF]) {
11308 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11309
11310 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11311 tb[NL80211_NAN_FUNC_SRF],
11312 nl80211_nan_srf_policy, info->extack);
11313 if (err)
11314 goto out;
11315
11316 func->srf_include =
11317 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11318
11319 if (srf_tb[NL80211_NAN_SRF_BF]) {
11320 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11321 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11322 err = -EINVAL;
11323 goto out;
11324 }
11325
11326 func->srf_bf_len =
11327 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11328 func->srf_bf =
11329 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11330 func->srf_bf_len, GFP_KERNEL);
11331 if (!func->srf_bf) {
11332 err = -ENOMEM;
11333 goto out;
11334 }
11335
11336 func->srf_bf_idx =
11337 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11338 } else {
11339 struct nlattr *attr, *mac_attr =
11340 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11341 int n_entries, rem, i = 0;
11342
11343 if (!mac_attr) {
11344 err = -EINVAL;
11345 goto out;
11346 }
11347
11348 n_entries = validate_acl_mac_addrs(mac_attr);
11349 if (n_entries <= 0) {
11350 err = -EINVAL;
11351 goto out;
11352 }
11353
11354 func->srf_num_macs = n_entries;
11355 func->srf_macs =
11356 kzalloc(sizeof(*func->srf_macs) * n_entries,
11357 GFP_KERNEL);
11358 if (!func->srf_macs) {
11359 err = -ENOMEM;
11360 goto out;
11361 }
11362
11363 nla_for_each_nested(attr, mac_attr, rem)
11364 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11365 sizeof(*func->srf_macs));
11366 }
11367 }
11368
11369 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11370 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11371 func, true);
11372 if (err)
11373 goto out;
11374 }
11375
11376 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11377 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11378 func, false);
11379 if (err)
11380 goto out;
11381 }
11382
11383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11384 if (!msg) {
11385 err = -ENOMEM;
11386 goto out;
11387 }
11388
11389 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11390 NL80211_CMD_ADD_NAN_FUNCTION);
11391 /* This can't really happen - we just allocated 4KB */
11392 if (WARN_ON(!hdr)) {
11393 err = -ENOMEM;
11394 goto out;
11395 }
11396
11397 err = rdev_add_nan_func(rdev, wdev, func);
11398 out:
11399 if (err < 0) {
11400 cfg80211_free_nan_func(func);
11401 nlmsg_free(msg);
11402 return err;
11403 }
11404
11405 /* propagate the instance id and cookie to userspace */
11406 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11407 NL80211_ATTR_PAD))
11408 goto nla_put_failure;
11409
11410 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11411 if (!func_attr)
11412 goto nla_put_failure;
11413
11414 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11415 func->instance_id))
11416 goto nla_put_failure;
11417
11418 nla_nest_end(msg, func_attr);
11419
11420 genlmsg_end(msg, hdr);
11421 return genlmsg_reply(msg, info);
11422
11423 nla_put_failure:
11424 nlmsg_free(msg);
11425 return -ENOBUFS;
11426 }
11427
11428 static int nl80211_nan_del_func(struct sk_buff *skb,
11429 struct genl_info *info)
11430 {
11431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11432 struct wireless_dev *wdev = info->user_ptr[1];
11433 u64 cookie;
11434
11435 if (wdev->iftype != NL80211_IFTYPE_NAN)
11436 return -EOPNOTSUPP;
11437
11438 if (!wdev_running(wdev))
11439 return -ENOTCONN;
11440
11441 if (!info->attrs[NL80211_ATTR_COOKIE])
11442 return -EINVAL;
11443
11444 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11445
11446 rdev_del_nan_func(rdev, wdev, cookie);
11447
11448 return 0;
11449 }
11450
11451 static int nl80211_nan_change_config(struct sk_buff *skb,
11452 struct genl_info *info)
11453 {
11454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11455 struct wireless_dev *wdev = info->user_ptr[1];
11456 struct cfg80211_nan_conf conf = {};
11457 u32 changed = 0;
11458
11459 if (wdev->iftype != NL80211_IFTYPE_NAN)
11460 return -EOPNOTSUPP;
11461
11462 if (!wdev_running(wdev))
11463 return -ENOTCONN;
11464
11465 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11466 conf.master_pref =
11467 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11468 if (conf.master_pref <= 1 || conf.master_pref == 255)
11469 return -EINVAL;
11470
11471 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11472 }
11473
11474 if (info->attrs[NL80211_ATTR_BANDS]) {
11475 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11476
11477 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11478 return -EOPNOTSUPP;
11479
11480 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11481 return -EINVAL;
11482
11483 conf.bands = bands;
11484 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11485 }
11486
11487 if (!changed)
11488 return -EINVAL;
11489
11490 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11491 }
11492
11493 void cfg80211_nan_match(struct wireless_dev *wdev,
11494 struct cfg80211_nan_match_params *match, gfp_t gfp)
11495 {
11496 struct wiphy *wiphy = wdev->wiphy;
11497 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11498 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11499 struct sk_buff *msg;
11500 void *hdr;
11501
11502 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11503 return;
11504
11505 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11506 if (!msg)
11507 return;
11508
11509 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11510 if (!hdr) {
11511 nlmsg_free(msg);
11512 return;
11513 }
11514
11515 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11516 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11517 wdev->netdev->ifindex)) ||
11518 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11519 NL80211_ATTR_PAD))
11520 goto nla_put_failure;
11521
11522 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11523 NL80211_ATTR_PAD) ||
11524 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11525 goto nla_put_failure;
11526
11527 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11528 if (!match_attr)
11529 goto nla_put_failure;
11530
11531 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11532 if (!local_func_attr)
11533 goto nla_put_failure;
11534
11535 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11536 goto nla_put_failure;
11537
11538 nla_nest_end(msg, local_func_attr);
11539
11540 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11541 if (!peer_func_attr)
11542 goto nla_put_failure;
11543
11544 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11545 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11546 goto nla_put_failure;
11547
11548 if (match->info && match->info_len &&
11549 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11550 match->info))
11551 goto nla_put_failure;
11552
11553 nla_nest_end(msg, peer_func_attr);
11554 nla_nest_end(msg, match_attr);
11555 genlmsg_end(msg, hdr);
11556
11557 if (!wdev->owner_nlportid)
11558 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11559 msg, 0, NL80211_MCGRP_NAN, gfp);
11560 else
11561 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11562 wdev->owner_nlportid);
11563
11564 return;
11565
11566 nla_put_failure:
11567 nlmsg_free(msg);
11568 }
11569 EXPORT_SYMBOL(cfg80211_nan_match);
11570
11571 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11572 u8 inst_id,
11573 enum nl80211_nan_func_term_reason reason,
11574 u64 cookie, gfp_t gfp)
11575 {
11576 struct wiphy *wiphy = wdev->wiphy;
11577 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11578 struct sk_buff *msg;
11579 struct nlattr *func_attr;
11580 void *hdr;
11581
11582 if (WARN_ON(!inst_id))
11583 return;
11584
11585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11586 if (!msg)
11587 return;
11588
11589 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11590 if (!hdr) {
11591 nlmsg_free(msg);
11592 return;
11593 }
11594
11595 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11596 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11597 wdev->netdev->ifindex)) ||
11598 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11599 NL80211_ATTR_PAD))
11600 goto nla_put_failure;
11601
11602 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11603 NL80211_ATTR_PAD))
11604 goto nla_put_failure;
11605
11606 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11607 if (!func_attr)
11608 goto nla_put_failure;
11609
11610 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11611 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11612 goto nla_put_failure;
11613
11614 nla_nest_end(msg, func_attr);
11615 genlmsg_end(msg, hdr);
11616
11617 if (!wdev->owner_nlportid)
11618 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11619 msg, 0, NL80211_MCGRP_NAN, gfp);
11620 else
11621 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11622 wdev->owner_nlportid);
11623
11624 return;
11625
11626 nla_put_failure:
11627 nlmsg_free(msg);
11628 }
11629 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11630
11631 static int nl80211_get_protocol_features(struct sk_buff *skb,
11632 struct genl_info *info)
11633 {
11634 void *hdr;
11635 struct sk_buff *msg;
11636
11637 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11638 if (!msg)
11639 return -ENOMEM;
11640
11641 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11642 NL80211_CMD_GET_PROTOCOL_FEATURES);
11643 if (!hdr)
11644 goto nla_put_failure;
11645
11646 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11647 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11648 goto nla_put_failure;
11649
11650 genlmsg_end(msg, hdr);
11651 return genlmsg_reply(msg, info);
11652
11653 nla_put_failure:
11654 kfree_skb(msg);
11655 return -ENOBUFS;
11656 }
11657
11658 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11659 {
11660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11661 struct cfg80211_update_ft_ies_params ft_params;
11662 struct net_device *dev = info->user_ptr[1];
11663
11664 if (!rdev->ops->update_ft_ies)
11665 return -EOPNOTSUPP;
11666
11667 if (!info->attrs[NL80211_ATTR_MDID] ||
11668 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11669 return -EINVAL;
11670
11671 memset(&ft_params, 0, sizeof(ft_params));
11672 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11673 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11674 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11675
11676 return rdev_update_ft_ies(rdev, dev, &ft_params);
11677 }
11678
11679 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11680 struct genl_info *info)
11681 {
11682 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11683 struct wireless_dev *wdev = info->user_ptr[1];
11684 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11685 u16 duration;
11686 int ret;
11687
11688 if (!rdev->ops->crit_proto_start)
11689 return -EOPNOTSUPP;
11690
11691 if (WARN_ON(!rdev->ops->crit_proto_stop))
11692 return -EINVAL;
11693
11694 if (rdev->crit_proto_nlportid)
11695 return -EBUSY;
11696
11697 /* determine protocol if provided */
11698 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11699 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11700
11701 if (proto >= NUM_NL80211_CRIT_PROTO)
11702 return -EINVAL;
11703
11704 /* timeout must be provided */
11705 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11706 return -EINVAL;
11707
11708 duration =
11709 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11710
11711 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11712 return -ERANGE;
11713
11714 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11715 if (!ret)
11716 rdev->crit_proto_nlportid = info->snd_portid;
11717
11718 return ret;
11719 }
11720
11721 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11722 struct genl_info *info)
11723 {
11724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11725 struct wireless_dev *wdev = info->user_ptr[1];
11726
11727 if (!rdev->ops->crit_proto_stop)
11728 return -EOPNOTSUPP;
11729
11730 if (rdev->crit_proto_nlportid) {
11731 rdev->crit_proto_nlportid = 0;
11732 rdev_crit_proto_stop(rdev, wdev);
11733 }
11734 return 0;
11735 }
11736
11737 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11738 {
11739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11740 struct wireless_dev *wdev =
11741 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11742 int i, err;
11743 u32 vid, subcmd;
11744
11745 if (!rdev->wiphy.vendor_commands)
11746 return -EOPNOTSUPP;
11747
11748 if (IS_ERR(wdev)) {
11749 err = PTR_ERR(wdev);
11750 if (err != -EINVAL)
11751 return err;
11752 wdev = NULL;
11753 } else if (wdev->wiphy != &rdev->wiphy) {
11754 return -EINVAL;
11755 }
11756
11757 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11758 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11759 return -EINVAL;
11760
11761 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11762 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11763 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11764 const struct wiphy_vendor_command *vcmd;
11765 void *data = NULL;
11766 int len = 0;
11767
11768 vcmd = &rdev->wiphy.vendor_commands[i];
11769
11770 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11771 continue;
11772
11773 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11774 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11775 if (!wdev)
11776 return -EINVAL;
11777 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11778 !wdev->netdev)
11779 return -EINVAL;
11780
11781 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11782 if (!wdev_running(wdev))
11783 return -ENETDOWN;
11784 }
11785
11786 if (!vcmd->doit)
11787 return -EOPNOTSUPP;
11788 } else {
11789 wdev = NULL;
11790 }
11791
11792 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11793 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11794 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11795 }
11796
11797 rdev->cur_cmd_info = info;
11798 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11799 data, len);
11800 rdev->cur_cmd_info = NULL;
11801 return err;
11802 }
11803
11804 return -EOPNOTSUPP;
11805 }
11806
11807 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11808 struct netlink_callback *cb,
11809 struct cfg80211_registered_device **rdev,
11810 struct wireless_dev **wdev)
11811 {
11812 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11813 u32 vid, subcmd;
11814 unsigned int i;
11815 int vcmd_idx = -1;
11816 int err;
11817 void *data = NULL;
11818 unsigned int data_len = 0;
11819
11820 if (cb->args[0]) {
11821 /* subtract the 1 again here */
11822 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11823 struct wireless_dev *tmp;
11824
11825 if (!wiphy)
11826 return -ENODEV;
11827 *rdev = wiphy_to_rdev(wiphy);
11828 *wdev = NULL;
11829
11830 if (cb->args[1]) {
11831 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11832 if (tmp->identifier == cb->args[1] - 1) {
11833 *wdev = tmp;
11834 break;
11835 }
11836 }
11837 }
11838
11839 /* keep rtnl locked in successful case */
11840 return 0;
11841 }
11842
11843 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11844 nl80211_fam.maxattr, nl80211_policy, NULL);
11845 if (err)
11846 return err;
11847
11848 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11849 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11850 return -EINVAL;
11851
11852 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11853 if (IS_ERR(*wdev))
11854 *wdev = NULL;
11855
11856 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11857 if (IS_ERR(*rdev))
11858 return PTR_ERR(*rdev);
11859
11860 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11861 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11862
11863 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11864 const struct wiphy_vendor_command *vcmd;
11865
11866 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11867
11868 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11869 continue;
11870
11871 if (!vcmd->dumpit)
11872 return -EOPNOTSUPP;
11873
11874 vcmd_idx = i;
11875 break;
11876 }
11877
11878 if (vcmd_idx < 0)
11879 return -EOPNOTSUPP;
11880
11881 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11882 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11883 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11884 }
11885
11886 /* 0 is the first index - add 1 to parse only once */
11887 cb->args[0] = (*rdev)->wiphy_idx + 1;
11888 /* add 1 to know if it was NULL */
11889 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11890 cb->args[2] = vcmd_idx;
11891 cb->args[3] = (unsigned long)data;
11892 cb->args[4] = data_len;
11893
11894 /* keep rtnl locked in successful case */
11895 return 0;
11896 }
11897
11898 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11899 struct netlink_callback *cb)
11900 {
11901 struct cfg80211_registered_device *rdev;
11902 struct wireless_dev *wdev;
11903 unsigned int vcmd_idx;
11904 const struct wiphy_vendor_command *vcmd;
11905 void *data;
11906 int data_len;
11907 int err;
11908 struct nlattr *vendor_data;
11909
11910 rtnl_lock();
11911 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11912 if (err)
11913 goto out;
11914
11915 vcmd_idx = cb->args[2];
11916 data = (void *)cb->args[3];
11917 data_len = cb->args[4];
11918 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11919
11920 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11921 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11922 if (!wdev) {
11923 err = -EINVAL;
11924 goto out;
11925 }
11926 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11927 !wdev->netdev) {
11928 err = -EINVAL;
11929 goto out;
11930 }
11931
11932 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11933 if (!wdev_running(wdev)) {
11934 err = -ENETDOWN;
11935 goto out;
11936 }
11937 }
11938 }
11939
11940 while (1) {
11941 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11942 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11943 NL80211_CMD_VENDOR);
11944 if (!hdr)
11945 break;
11946
11947 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11948 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11949 wdev_id(wdev),
11950 NL80211_ATTR_PAD))) {
11951 genlmsg_cancel(skb, hdr);
11952 break;
11953 }
11954
11955 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11956 if (!vendor_data) {
11957 genlmsg_cancel(skb, hdr);
11958 break;
11959 }
11960
11961 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11962 (unsigned long *)&cb->args[5]);
11963 nla_nest_end(skb, vendor_data);
11964
11965 if (err == -ENOBUFS || err == -ENOENT) {
11966 genlmsg_cancel(skb, hdr);
11967 break;
11968 } else if (err) {
11969 genlmsg_cancel(skb, hdr);
11970 goto out;
11971 }
11972
11973 genlmsg_end(skb, hdr);
11974 }
11975
11976 err = skb->len;
11977 out:
11978 rtnl_unlock();
11979 return err;
11980 }
11981
11982 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11983 enum nl80211_commands cmd,
11984 enum nl80211_attrs attr,
11985 int approxlen)
11986 {
11987 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11988
11989 if (WARN_ON(!rdev->cur_cmd_info))
11990 return NULL;
11991
11992 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11993 rdev->cur_cmd_info->snd_portid,
11994 rdev->cur_cmd_info->snd_seq,
11995 cmd, attr, NULL, GFP_KERNEL);
11996 }
11997 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11998
11999 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12000 {
12001 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12002 void *hdr = ((void **)skb->cb)[1];
12003 struct nlattr *data = ((void **)skb->cb)[2];
12004
12005 /* clear CB data for netlink core to own from now on */
12006 memset(skb->cb, 0, sizeof(skb->cb));
12007
12008 if (WARN_ON(!rdev->cur_cmd_info)) {
12009 kfree_skb(skb);
12010 return -EINVAL;
12011 }
12012
12013 nla_nest_end(skb, data);
12014 genlmsg_end(skb, hdr);
12015 return genlmsg_reply(skb, rdev->cur_cmd_info);
12016 }
12017 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12018
12019 static int nl80211_set_qos_map(struct sk_buff *skb,
12020 struct genl_info *info)
12021 {
12022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12023 struct cfg80211_qos_map *qos_map = NULL;
12024 struct net_device *dev = info->user_ptr[1];
12025 u8 *pos, len, num_des, des_len, des;
12026 int ret;
12027
12028 if (!rdev->ops->set_qos_map)
12029 return -EOPNOTSUPP;
12030
12031 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12032 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12033 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12034
12035 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12036 len > IEEE80211_QOS_MAP_LEN_MAX)
12037 return -EINVAL;
12038
12039 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12040 if (!qos_map)
12041 return -ENOMEM;
12042
12043 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12044 if (num_des) {
12045 des_len = num_des *
12046 sizeof(struct cfg80211_dscp_exception);
12047 memcpy(qos_map->dscp_exception, pos, des_len);
12048 qos_map->num_des = num_des;
12049 for (des = 0; des < num_des; des++) {
12050 if (qos_map->dscp_exception[des].up > 7) {
12051 kfree(qos_map);
12052 return -EINVAL;
12053 }
12054 }
12055 pos += des_len;
12056 }
12057 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12058 }
12059
12060 wdev_lock(dev->ieee80211_ptr);
12061 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12062 if (!ret)
12063 ret = rdev_set_qos_map(rdev, dev, qos_map);
12064 wdev_unlock(dev->ieee80211_ptr);
12065
12066 kfree(qos_map);
12067 return ret;
12068 }
12069
12070 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12071 {
12072 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12073 struct net_device *dev = info->user_ptr[1];
12074 struct wireless_dev *wdev = dev->ieee80211_ptr;
12075 const u8 *peer;
12076 u8 tsid, up;
12077 u16 admitted_time = 0;
12078 int err;
12079
12080 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12081 return -EOPNOTSUPP;
12082
12083 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12084 !info->attrs[NL80211_ATTR_USER_PRIO])
12085 return -EINVAL;
12086
12087 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12088 if (tsid >= IEEE80211_NUM_TIDS)
12089 return -EINVAL;
12090
12091 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12092 if (up >= IEEE80211_NUM_UPS)
12093 return -EINVAL;
12094
12095 /* WMM uses TIDs 0-7 even for TSPEC */
12096 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12097 /* TODO: handle 802.11 TSPEC/admission control
12098 * need more attributes for that (e.g. BA session requirement);
12099 * change the WMM adminssion test above to allow both then
12100 */
12101 return -EINVAL;
12102 }
12103
12104 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12105
12106 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12107 admitted_time =
12108 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12109 if (!admitted_time)
12110 return -EINVAL;
12111 }
12112
12113 wdev_lock(wdev);
12114 switch (wdev->iftype) {
12115 case NL80211_IFTYPE_STATION:
12116 case NL80211_IFTYPE_P2P_CLIENT:
12117 if (wdev->current_bss)
12118 break;
12119 err = -ENOTCONN;
12120 goto out;
12121 default:
12122 err = -EOPNOTSUPP;
12123 goto out;
12124 }
12125
12126 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12127
12128 out:
12129 wdev_unlock(wdev);
12130 return err;
12131 }
12132
12133 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12134 {
12135 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12136 struct net_device *dev = info->user_ptr[1];
12137 struct wireless_dev *wdev = dev->ieee80211_ptr;
12138 const u8 *peer;
12139 u8 tsid;
12140 int err;
12141
12142 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12143 return -EINVAL;
12144
12145 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12146 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12147
12148 wdev_lock(wdev);
12149 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12150 wdev_unlock(wdev);
12151
12152 return err;
12153 }
12154
12155 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12156 struct genl_info *info)
12157 {
12158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159 struct net_device *dev = info->user_ptr[1];
12160 struct wireless_dev *wdev = dev->ieee80211_ptr;
12161 struct cfg80211_chan_def chandef = {};
12162 const u8 *addr;
12163 u8 oper_class;
12164 int err;
12165
12166 if (!rdev->ops->tdls_channel_switch ||
12167 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12168 return -EOPNOTSUPP;
12169
12170 switch (dev->ieee80211_ptr->iftype) {
12171 case NL80211_IFTYPE_STATION:
12172 case NL80211_IFTYPE_P2P_CLIENT:
12173 break;
12174 default:
12175 return -EOPNOTSUPP;
12176 }
12177
12178 if (!info->attrs[NL80211_ATTR_MAC] ||
12179 !info->attrs[NL80211_ATTR_OPER_CLASS])
12180 return -EINVAL;
12181
12182 err = nl80211_parse_chandef(rdev, info, &chandef);
12183 if (err)
12184 return err;
12185
12186 /*
12187 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12188 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12189 * specification is not defined for them.
12190 */
12191 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12192 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12193 chandef.width != NL80211_CHAN_WIDTH_20)
12194 return -EINVAL;
12195
12196 /* we will be active on the TDLS link */
12197 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12198 wdev->iftype))
12199 return -EINVAL;
12200
12201 /* don't allow switching to DFS channels */
12202 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12203 return -EINVAL;
12204
12205 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12206 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12207
12208 wdev_lock(wdev);
12209 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12210 wdev_unlock(wdev);
12211
12212 return err;
12213 }
12214
12215 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12216 struct genl_info *info)
12217 {
12218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12219 struct net_device *dev = info->user_ptr[1];
12220 struct wireless_dev *wdev = dev->ieee80211_ptr;
12221 const u8 *addr;
12222
12223 if (!rdev->ops->tdls_channel_switch ||
12224 !rdev->ops->tdls_cancel_channel_switch ||
12225 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12226 return -EOPNOTSUPP;
12227
12228 switch (dev->ieee80211_ptr->iftype) {
12229 case NL80211_IFTYPE_STATION:
12230 case NL80211_IFTYPE_P2P_CLIENT:
12231 break;
12232 default:
12233 return -EOPNOTSUPP;
12234 }
12235
12236 if (!info->attrs[NL80211_ATTR_MAC])
12237 return -EINVAL;
12238
12239 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12240
12241 wdev_lock(wdev);
12242 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12243 wdev_unlock(wdev);
12244
12245 return 0;
12246 }
12247
12248 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12249 struct genl_info *info)
12250 {
12251 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12252 struct net_device *dev = info->user_ptr[1];
12253 struct wireless_dev *wdev = dev->ieee80211_ptr;
12254 const struct nlattr *nla;
12255 bool enabled;
12256
12257 if (!rdev->ops->set_multicast_to_unicast)
12258 return -EOPNOTSUPP;
12259
12260 if (wdev->iftype != NL80211_IFTYPE_AP &&
12261 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12262 return -EOPNOTSUPP;
12263
12264 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12265 enabled = nla_get_flag(nla);
12266
12267 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12268 }
12269
12270 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12271 {
12272 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12273 struct net_device *dev = info->user_ptr[1];
12274 struct wireless_dev *wdev = dev->ieee80211_ptr;
12275 struct cfg80211_pmk_conf pmk_conf = {};
12276 int ret;
12277
12278 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12279 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12280 return -EOPNOTSUPP;
12281
12282 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12283 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12284 return -EOPNOTSUPP;
12285
12286 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12287 return -EINVAL;
12288
12289 wdev_lock(wdev);
12290 if (!wdev->current_bss) {
12291 ret = -ENOTCONN;
12292 goto out;
12293 }
12294
12295 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12296 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12297 ret = -EINVAL;
12298 goto out;
12299 }
12300
12301 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12302 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12303 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12304 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12305 ret = -EINVAL;
12306 goto out;
12307 }
12308
12309 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12310 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12311
12312 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12313 ret = -EINVAL;
12314 goto out;
12315 }
12316
12317 pmk_conf.pmk_r0_name =
12318 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12319 }
12320
12321 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12322 out:
12323 wdev_unlock(wdev);
12324 return ret;
12325 }
12326
12327 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12328 {
12329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12330 struct net_device *dev = info->user_ptr[1];
12331 struct wireless_dev *wdev = dev->ieee80211_ptr;
12332 const u8 *aa;
12333 int ret;
12334
12335 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12336 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12337 return -EOPNOTSUPP;
12338
12339 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12340 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12341 return -EOPNOTSUPP;
12342
12343 if (!info->attrs[NL80211_ATTR_MAC])
12344 return -EINVAL;
12345
12346 wdev_lock(wdev);
12347 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12348 ret = rdev_del_pmk(rdev, dev, aa);
12349 wdev_unlock(wdev);
12350
12351 return ret;
12352 }
12353
12354 #define NL80211_FLAG_NEED_WIPHY 0x01
12355 #define NL80211_FLAG_NEED_NETDEV 0x02
12356 #define NL80211_FLAG_NEED_RTNL 0x04
12357 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12358 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12359 NL80211_FLAG_CHECK_NETDEV_UP)
12360 #define NL80211_FLAG_NEED_WDEV 0x10
12361 /* If a netdev is associated, it must be UP, P2P must be started */
12362 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12363 NL80211_FLAG_CHECK_NETDEV_UP)
12364 #define NL80211_FLAG_CLEAR_SKB 0x20
12365
12366 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12367 struct genl_info *info)
12368 {
12369 struct cfg80211_registered_device *rdev;
12370 struct wireless_dev *wdev;
12371 struct net_device *dev;
12372 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12373
12374 if (rtnl)
12375 rtnl_lock();
12376
12377 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12378 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12379 if (IS_ERR(rdev)) {
12380 if (rtnl)
12381 rtnl_unlock();
12382 return PTR_ERR(rdev);
12383 }
12384 info->user_ptr[0] = rdev;
12385 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12386 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12387 ASSERT_RTNL();
12388
12389 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12390 info->attrs);
12391 if (IS_ERR(wdev)) {
12392 if (rtnl)
12393 rtnl_unlock();
12394 return PTR_ERR(wdev);
12395 }
12396
12397 dev = wdev->netdev;
12398 rdev = wiphy_to_rdev(wdev->wiphy);
12399
12400 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12401 if (!dev) {
12402 if (rtnl)
12403 rtnl_unlock();
12404 return -EINVAL;
12405 }
12406
12407 info->user_ptr[1] = dev;
12408 } else {
12409 info->user_ptr[1] = wdev;
12410 }
12411
12412 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12413 !wdev_running(wdev)) {
12414 if (rtnl)
12415 rtnl_unlock();
12416 return -ENETDOWN;
12417 }
12418
12419 if (dev)
12420 dev_hold(dev);
12421
12422 info->user_ptr[0] = rdev;
12423 }
12424
12425 return 0;
12426 }
12427
12428 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12429 struct genl_info *info)
12430 {
12431 if (info->user_ptr[1]) {
12432 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12433 struct wireless_dev *wdev = info->user_ptr[1];
12434
12435 if (wdev->netdev)
12436 dev_put(wdev->netdev);
12437 } else {
12438 dev_put(info->user_ptr[1]);
12439 }
12440 }
12441
12442 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12443 rtnl_unlock();
12444
12445 /* If needed, clear the netlink message payload from the SKB
12446 * as it might contain key data that shouldn't stick around on
12447 * the heap after the SKB is freed. The netlink message header
12448 * is still needed for further processing, so leave it intact.
12449 */
12450 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12451 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12452
12453 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12454 }
12455 }
12456
12457 static const struct genl_ops nl80211_ops[] = {
12458 {
12459 .cmd = NL80211_CMD_GET_WIPHY,
12460 .doit = nl80211_get_wiphy,
12461 .dumpit = nl80211_dump_wiphy,
12462 .done = nl80211_dump_wiphy_done,
12463 .policy = nl80211_policy,
12464 /* can be retrieved by unprivileged users */
12465 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12466 NL80211_FLAG_NEED_RTNL,
12467 },
12468 {
12469 .cmd = NL80211_CMD_SET_WIPHY,
12470 .doit = nl80211_set_wiphy,
12471 .policy = nl80211_policy,
12472 .flags = GENL_UNS_ADMIN_PERM,
12473 .internal_flags = NL80211_FLAG_NEED_RTNL,
12474 },
12475 {
12476 .cmd = NL80211_CMD_GET_INTERFACE,
12477 .doit = nl80211_get_interface,
12478 .dumpit = nl80211_dump_interface,
12479 .policy = nl80211_policy,
12480 /* can be retrieved by unprivileged users */
12481 .internal_flags = NL80211_FLAG_NEED_WDEV |
12482 NL80211_FLAG_NEED_RTNL,
12483 },
12484 {
12485 .cmd = NL80211_CMD_SET_INTERFACE,
12486 .doit = nl80211_set_interface,
12487 .policy = nl80211_policy,
12488 .flags = GENL_UNS_ADMIN_PERM,
12489 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12490 NL80211_FLAG_NEED_RTNL,
12491 },
12492 {
12493 .cmd = NL80211_CMD_NEW_INTERFACE,
12494 .doit = nl80211_new_interface,
12495 .policy = nl80211_policy,
12496 .flags = GENL_UNS_ADMIN_PERM,
12497 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12498 NL80211_FLAG_NEED_RTNL,
12499 },
12500 {
12501 .cmd = NL80211_CMD_DEL_INTERFACE,
12502 .doit = nl80211_del_interface,
12503 .policy = nl80211_policy,
12504 .flags = GENL_UNS_ADMIN_PERM,
12505 .internal_flags = NL80211_FLAG_NEED_WDEV |
12506 NL80211_FLAG_NEED_RTNL,
12507 },
12508 {
12509 .cmd = NL80211_CMD_GET_KEY,
12510 .doit = nl80211_get_key,
12511 .policy = nl80211_policy,
12512 .flags = GENL_UNS_ADMIN_PERM,
12513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12514 NL80211_FLAG_NEED_RTNL,
12515 },
12516 {
12517 .cmd = NL80211_CMD_SET_KEY,
12518 .doit = nl80211_set_key,
12519 .policy = nl80211_policy,
12520 .flags = GENL_UNS_ADMIN_PERM,
12521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12522 NL80211_FLAG_NEED_RTNL |
12523 NL80211_FLAG_CLEAR_SKB,
12524 },
12525 {
12526 .cmd = NL80211_CMD_NEW_KEY,
12527 .doit = nl80211_new_key,
12528 .policy = nl80211_policy,
12529 .flags = GENL_UNS_ADMIN_PERM,
12530 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12531 NL80211_FLAG_NEED_RTNL |
12532 NL80211_FLAG_CLEAR_SKB,
12533 },
12534 {
12535 .cmd = NL80211_CMD_DEL_KEY,
12536 .doit = nl80211_del_key,
12537 .policy = nl80211_policy,
12538 .flags = GENL_UNS_ADMIN_PERM,
12539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12540 NL80211_FLAG_NEED_RTNL,
12541 },
12542 {
12543 .cmd = NL80211_CMD_SET_BEACON,
12544 .policy = nl80211_policy,
12545 .flags = GENL_UNS_ADMIN_PERM,
12546 .doit = nl80211_set_beacon,
12547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12548 NL80211_FLAG_NEED_RTNL,
12549 },
12550 {
12551 .cmd = NL80211_CMD_START_AP,
12552 .policy = nl80211_policy,
12553 .flags = GENL_UNS_ADMIN_PERM,
12554 .doit = nl80211_start_ap,
12555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12556 NL80211_FLAG_NEED_RTNL,
12557 },
12558 {
12559 .cmd = NL80211_CMD_STOP_AP,
12560 .policy = nl80211_policy,
12561 .flags = GENL_UNS_ADMIN_PERM,
12562 .doit = nl80211_stop_ap,
12563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12564 NL80211_FLAG_NEED_RTNL,
12565 },
12566 {
12567 .cmd = NL80211_CMD_GET_STATION,
12568 .doit = nl80211_get_station,
12569 .dumpit = nl80211_dump_station,
12570 .policy = nl80211_policy,
12571 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12572 NL80211_FLAG_NEED_RTNL,
12573 },
12574 {
12575 .cmd = NL80211_CMD_SET_STATION,
12576 .doit = nl80211_set_station,
12577 .policy = nl80211_policy,
12578 .flags = GENL_UNS_ADMIN_PERM,
12579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12580 NL80211_FLAG_NEED_RTNL,
12581 },
12582 {
12583 .cmd = NL80211_CMD_NEW_STATION,
12584 .doit = nl80211_new_station,
12585 .policy = nl80211_policy,
12586 .flags = GENL_UNS_ADMIN_PERM,
12587 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12588 NL80211_FLAG_NEED_RTNL,
12589 },
12590 {
12591 .cmd = NL80211_CMD_DEL_STATION,
12592 .doit = nl80211_del_station,
12593 .policy = nl80211_policy,
12594 .flags = GENL_UNS_ADMIN_PERM,
12595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12596 NL80211_FLAG_NEED_RTNL,
12597 },
12598 {
12599 .cmd = NL80211_CMD_GET_MPATH,
12600 .doit = nl80211_get_mpath,
12601 .dumpit = nl80211_dump_mpath,
12602 .policy = nl80211_policy,
12603 .flags = GENL_UNS_ADMIN_PERM,
12604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12605 NL80211_FLAG_NEED_RTNL,
12606 },
12607 {
12608 .cmd = NL80211_CMD_GET_MPP,
12609 .doit = nl80211_get_mpp,
12610 .dumpit = nl80211_dump_mpp,
12611 .policy = nl80211_policy,
12612 .flags = GENL_UNS_ADMIN_PERM,
12613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12614 NL80211_FLAG_NEED_RTNL,
12615 },
12616 {
12617 .cmd = NL80211_CMD_SET_MPATH,
12618 .doit = nl80211_set_mpath,
12619 .policy = nl80211_policy,
12620 .flags = GENL_UNS_ADMIN_PERM,
12621 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12622 NL80211_FLAG_NEED_RTNL,
12623 },
12624 {
12625 .cmd = NL80211_CMD_NEW_MPATH,
12626 .doit = nl80211_new_mpath,
12627 .policy = nl80211_policy,
12628 .flags = GENL_UNS_ADMIN_PERM,
12629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12630 NL80211_FLAG_NEED_RTNL,
12631 },
12632 {
12633 .cmd = NL80211_CMD_DEL_MPATH,
12634 .doit = nl80211_del_mpath,
12635 .policy = nl80211_policy,
12636 .flags = GENL_UNS_ADMIN_PERM,
12637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12638 NL80211_FLAG_NEED_RTNL,
12639 },
12640 {
12641 .cmd = NL80211_CMD_SET_BSS,
12642 .doit = nl80211_set_bss,
12643 .policy = nl80211_policy,
12644 .flags = GENL_UNS_ADMIN_PERM,
12645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12646 NL80211_FLAG_NEED_RTNL,
12647 },
12648 {
12649 .cmd = NL80211_CMD_GET_REG,
12650 .doit = nl80211_get_reg_do,
12651 .dumpit = nl80211_get_reg_dump,
12652 .policy = nl80211_policy,
12653 .internal_flags = NL80211_FLAG_NEED_RTNL,
12654 /* can be retrieved by unprivileged users */
12655 },
12656 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12657 {
12658 .cmd = NL80211_CMD_SET_REG,
12659 .doit = nl80211_set_reg,
12660 .policy = nl80211_policy,
12661 .flags = GENL_ADMIN_PERM,
12662 .internal_flags = NL80211_FLAG_NEED_RTNL,
12663 },
12664 #endif
12665 {
12666 .cmd = NL80211_CMD_REQ_SET_REG,
12667 .doit = nl80211_req_set_reg,
12668 .policy = nl80211_policy,
12669 .flags = GENL_ADMIN_PERM,
12670 },
12671 {
12672 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12673 .doit = nl80211_get_mesh_config,
12674 .policy = nl80211_policy,
12675 /* can be retrieved by unprivileged users */
12676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12677 NL80211_FLAG_NEED_RTNL,
12678 },
12679 {
12680 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12681 .doit = nl80211_update_mesh_config,
12682 .policy = nl80211_policy,
12683 .flags = GENL_UNS_ADMIN_PERM,
12684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12685 NL80211_FLAG_NEED_RTNL,
12686 },
12687 {
12688 .cmd = NL80211_CMD_TRIGGER_SCAN,
12689 .doit = nl80211_trigger_scan,
12690 .policy = nl80211_policy,
12691 .flags = GENL_UNS_ADMIN_PERM,
12692 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12693 NL80211_FLAG_NEED_RTNL,
12694 },
12695 {
12696 .cmd = NL80211_CMD_ABORT_SCAN,
12697 .doit = nl80211_abort_scan,
12698 .policy = nl80211_policy,
12699 .flags = GENL_UNS_ADMIN_PERM,
12700 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12701 NL80211_FLAG_NEED_RTNL,
12702 },
12703 {
12704 .cmd = NL80211_CMD_GET_SCAN,
12705 .policy = nl80211_policy,
12706 .dumpit = nl80211_dump_scan,
12707 },
12708 {
12709 .cmd = NL80211_CMD_START_SCHED_SCAN,
12710 .doit = nl80211_start_sched_scan,
12711 .policy = nl80211_policy,
12712 .flags = GENL_UNS_ADMIN_PERM,
12713 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12714 NL80211_FLAG_NEED_RTNL,
12715 },
12716 {
12717 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12718 .doit = nl80211_stop_sched_scan,
12719 .policy = nl80211_policy,
12720 .flags = GENL_UNS_ADMIN_PERM,
12721 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12722 NL80211_FLAG_NEED_RTNL,
12723 },
12724 {
12725 .cmd = NL80211_CMD_AUTHENTICATE,
12726 .doit = nl80211_authenticate,
12727 .policy = nl80211_policy,
12728 .flags = GENL_UNS_ADMIN_PERM,
12729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12730 NL80211_FLAG_NEED_RTNL |
12731 NL80211_FLAG_CLEAR_SKB,
12732 },
12733 {
12734 .cmd = NL80211_CMD_ASSOCIATE,
12735 .doit = nl80211_associate,
12736 .policy = nl80211_policy,
12737 .flags = GENL_UNS_ADMIN_PERM,
12738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12739 NL80211_FLAG_NEED_RTNL,
12740 },
12741 {
12742 .cmd = NL80211_CMD_DEAUTHENTICATE,
12743 .doit = nl80211_deauthenticate,
12744 .policy = nl80211_policy,
12745 .flags = GENL_UNS_ADMIN_PERM,
12746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12747 NL80211_FLAG_NEED_RTNL,
12748 },
12749 {
12750 .cmd = NL80211_CMD_DISASSOCIATE,
12751 .doit = nl80211_disassociate,
12752 .policy = nl80211_policy,
12753 .flags = GENL_UNS_ADMIN_PERM,
12754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12755 NL80211_FLAG_NEED_RTNL,
12756 },
12757 {
12758 .cmd = NL80211_CMD_JOIN_IBSS,
12759 .doit = nl80211_join_ibss,
12760 .policy = nl80211_policy,
12761 .flags = GENL_UNS_ADMIN_PERM,
12762 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12763 NL80211_FLAG_NEED_RTNL,
12764 },
12765 {
12766 .cmd = NL80211_CMD_LEAVE_IBSS,
12767 .doit = nl80211_leave_ibss,
12768 .policy = nl80211_policy,
12769 .flags = GENL_UNS_ADMIN_PERM,
12770 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12771 NL80211_FLAG_NEED_RTNL,
12772 },
12773 #ifdef CONFIG_NL80211_TESTMODE
12774 {
12775 .cmd = NL80211_CMD_TESTMODE,
12776 .doit = nl80211_testmode_do,
12777 .dumpit = nl80211_testmode_dump,
12778 .policy = nl80211_policy,
12779 .flags = GENL_UNS_ADMIN_PERM,
12780 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12781 NL80211_FLAG_NEED_RTNL,
12782 },
12783 #endif
12784 {
12785 .cmd = NL80211_CMD_CONNECT,
12786 .doit = nl80211_connect,
12787 .policy = nl80211_policy,
12788 .flags = GENL_UNS_ADMIN_PERM,
12789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12790 NL80211_FLAG_NEED_RTNL,
12791 },
12792 {
12793 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12794 .doit = nl80211_update_connect_params,
12795 .policy = nl80211_policy,
12796 .flags = GENL_ADMIN_PERM,
12797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12798 NL80211_FLAG_NEED_RTNL,
12799 },
12800 {
12801 .cmd = NL80211_CMD_DISCONNECT,
12802 .doit = nl80211_disconnect,
12803 .policy = nl80211_policy,
12804 .flags = GENL_UNS_ADMIN_PERM,
12805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12806 NL80211_FLAG_NEED_RTNL,
12807 },
12808 {
12809 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12810 .doit = nl80211_wiphy_netns,
12811 .policy = nl80211_policy,
12812 .flags = GENL_UNS_ADMIN_PERM,
12813 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12814 NL80211_FLAG_NEED_RTNL,
12815 },
12816 {
12817 .cmd = NL80211_CMD_GET_SURVEY,
12818 .policy = nl80211_policy,
12819 .dumpit = nl80211_dump_survey,
12820 },
12821 {
12822 .cmd = NL80211_CMD_SET_PMKSA,
12823 .doit = nl80211_setdel_pmksa,
12824 .policy = nl80211_policy,
12825 .flags = GENL_UNS_ADMIN_PERM,
12826 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12827 NL80211_FLAG_NEED_RTNL,
12828 },
12829 {
12830 .cmd = NL80211_CMD_DEL_PMKSA,
12831 .doit = nl80211_setdel_pmksa,
12832 .policy = nl80211_policy,
12833 .flags = GENL_UNS_ADMIN_PERM,
12834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12835 NL80211_FLAG_NEED_RTNL,
12836 },
12837 {
12838 .cmd = NL80211_CMD_FLUSH_PMKSA,
12839 .doit = nl80211_flush_pmksa,
12840 .policy = nl80211_policy,
12841 .flags = GENL_UNS_ADMIN_PERM,
12842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12843 NL80211_FLAG_NEED_RTNL,
12844 },
12845 {
12846 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12847 .doit = nl80211_remain_on_channel,
12848 .policy = nl80211_policy,
12849 .flags = GENL_UNS_ADMIN_PERM,
12850 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12851 NL80211_FLAG_NEED_RTNL,
12852 },
12853 {
12854 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12855 .doit = nl80211_cancel_remain_on_channel,
12856 .policy = nl80211_policy,
12857 .flags = GENL_UNS_ADMIN_PERM,
12858 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12859 NL80211_FLAG_NEED_RTNL,
12860 },
12861 {
12862 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12863 .doit = nl80211_set_tx_bitrate_mask,
12864 .policy = nl80211_policy,
12865 .flags = GENL_UNS_ADMIN_PERM,
12866 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12867 NL80211_FLAG_NEED_RTNL,
12868 },
12869 {
12870 .cmd = NL80211_CMD_REGISTER_FRAME,
12871 .doit = nl80211_register_mgmt,
12872 .policy = nl80211_policy,
12873 .flags = GENL_UNS_ADMIN_PERM,
12874 .internal_flags = NL80211_FLAG_NEED_WDEV |
12875 NL80211_FLAG_NEED_RTNL,
12876 },
12877 {
12878 .cmd = NL80211_CMD_FRAME,
12879 .doit = nl80211_tx_mgmt,
12880 .policy = nl80211_policy,
12881 .flags = GENL_UNS_ADMIN_PERM,
12882 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12883 NL80211_FLAG_NEED_RTNL,
12884 },
12885 {
12886 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12887 .doit = nl80211_tx_mgmt_cancel_wait,
12888 .policy = nl80211_policy,
12889 .flags = GENL_UNS_ADMIN_PERM,
12890 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12891 NL80211_FLAG_NEED_RTNL,
12892 },
12893 {
12894 .cmd = NL80211_CMD_SET_POWER_SAVE,
12895 .doit = nl80211_set_power_save,
12896 .policy = nl80211_policy,
12897 .flags = GENL_UNS_ADMIN_PERM,
12898 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12899 NL80211_FLAG_NEED_RTNL,
12900 },
12901 {
12902 .cmd = NL80211_CMD_GET_POWER_SAVE,
12903 .doit = nl80211_get_power_save,
12904 .policy = nl80211_policy,
12905 /* can be retrieved by unprivileged users */
12906 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12907 NL80211_FLAG_NEED_RTNL,
12908 },
12909 {
12910 .cmd = NL80211_CMD_SET_CQM,
12911 .doit = nl80211_set_cqm,
12912 .policy = nl80211_policy,
12913 .flags = GENL_UNS_ADMIN_PERM,
12914 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12915 NL80211_FLAG_NEED_RTNL,
12916 },
12917 {
12918 .cmd = NL80211_CMD_SET_CHANNEL,
12919 .doit = nl80211_set_channel,
12920 .policy = nl80211_policy,
12921 .flags = GENL_UNS_ADMIN_PERM,
12922 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12923 NL80211_FLAG_NEED_RTNL,
12924 },
12925 {
12926 .cmd = NL80211_CMD_SET_WDS_PEER,
12927 .doit = nl80211_set_wds_peer,
12928 .policy = nl80211_policy,
12929 .flags = GENL_UNS_ADMIN_PERM,
12930 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12931 NL80211_FLAG_NEED_RTNL,
12932 },
12933 {
12934 .cmd = NL80211_CMD_JOIN_MESH,
12935 .doit = nl80211_join_mesh,
12936 .policy = nl80211_policy,
12937 .flags = GENL_UNS_ADMIN_PERM,
12938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12939 NL80211_FLAG_NEED_RTNL,
12940 },
12941 {
12942 .cmd = NL80211_CMD_LEAVE_MESH,
12943 .doit = nl80211_leave_mesh,
12944 .policy = nl80211_policy,
12945 .flags = GENL_UNS_ADMIN_PERM,
12946 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12947 NL80211_FLAG_NEED_RTNL,
12948 },
12949 {
12950 .cmd = NL80211_CMD_JOIN_OCB,
12951 .doit = nl80211_join_ocb,
12952 .policy = nl80211_policy,
12953 .flags = GENL_UNS_ADMIN_PERM,
12954 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12955 NL80211_FLAG_NEED_RTNL,
12956 },
12957 {
12958 .cmd = NL80211_CMD_LEAVE_OCB,
12959 .doit = nl80211_leave_ocb,
12960 .policy = nl80211_policy,
12961 .flags = GENL_UNS_ADMIN_PERM,
12962 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12963 NL80211_FLAG_NEED_RTNL,
12964 },
12965 #ifdef CONFIG_PM
12966 {
12967 .cmd = NL80211_CMD_GET_WOWLAN,
12968 .doit = nl80211_get_wowlan,
12969 .policy = nl80211_policy,
12970 /* can be retrieved by unprivileged users */
12971 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12972 NL80211_FLAG_NEED_RTNL,
12973 },
12974 {
12975 .cmd = NL80211_CMD_SET_WOWLAN,
12976 .doit = nl80211_set_wowlan,
12977 .policy = nl80211_policy,
12978 .flags = GENL_UNS_ADMIN_PERM,
12979 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12980 NL80211_FLAG_NEED_RTNL,
12981 },
12982 #endif
12983 {
12984 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12985 .doit = nl80211_set_rekey_data,
12986 .policy = nl80211_policy,
12987 .flags = GENL_UNS_ADMIN_PERM,
12988 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12989 NL80211_FLAG_NEED_RTNL |
12990 NL80211_FLAG_CLEAR_SKB,
12991 },
12992 {
12993 .cmd = NL80211_CMD_TDLS_MGMT,
12994 .doit = nl80211_tdls_mgmt,
12995 .policy = nl80211_policy,
12996 .flags = GENL_UNS_ADMIN_PERM,
12997 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12998 NL80211_FLAG_NEED_RTNL,
12999 },
13000 {
13001 .cmd = NL80211_CMD_TDLS_OPER,
13002 .doit = nl80211_tdls_oper,
13003 .policy = nl80211_policy,
13004 .flags = GENL_UNS_ADMIN_PERM,
13005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13006 NL80211_FLAG_NEED_RTNL,
13007 },
13008 {
13009 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13010 .doit = nl80211_register_unexpected_frame,
13011 .policy = nl80211_policy,
13012 .flags = GENL_UNS_ADMIN_PERM,
13013 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13014 NL80211_FLAG_NEED_RTNL,
13015 },
13016 {
13017 .cmd = NL80211_CMD_PROBE_CLIENT,
13018 .doit = nl80211_probe_client,
13019 .policy = nl80211_policy,
13020 .flags = GENL_UNS_ADMIN_PERM,
13021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13022 NL80211_FLAG_NEED_RTNL,
13023 },
13024 {
13025 .cmd = NL80211_CMD_REGISTER_BEACONS,
13026 .doit = nl80211_register_beacons,
13027 .policy = nl80211_policy,
13028 .flags = GENL_UNS_ADMIN_PERM,
13029 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13030 NL80211_FLAG_NEED_RTNL,
13031 },
13032 {
13033 .cmd = NL80211_CMD_SET_NOACK_MAP,
13034 .doit = nl80211_set_noack_map,
13035 .policy = nl80211_policy,
13036 .flags = GENL_UNS_ADMIN_PERM,
13037 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13038 NL80211_FLAG_NEED_RTNL,
13039 },
13040 {
13041 .cmd = NL80211_CMD_START_P2P_DEVICE,
13042 .doit = nl80211_start_p2p_device,
13043 .policy = nl80211_policy,
13044 .flags = GENL_UNS_ADMIN_PERM,
13045 .internal_flags = NL80211_FLAG_NEED_WDEV |
13046 NL80211_FLAG_NEED_RTNL,
13047 },
13048 {
13049 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13050 .doit = nl80211_stop_p2p_device,
13051 .policy = nl80211_policy,
13052 .flags = GENL_UNS_ADMIN_PERM,
13053 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13054 NL80211_FLAG_NEED_RTNL,
13055 },
13056 {
13057 .cmd = NL80211_CMD_START_NAN,
13058 .doit = nl80211_start_nan,
13059 .policy = nl80211_policy,
13060 .flags = GENL_ADMIN_PERM,
13061 .internal_flags = NL80211_FLAG_NEED_WDEV |
13062 NL80211_FLAG_NEED_RTNL,
13063 },
13064 {
13065 .cmd = NL80211_CMD_STOP_NAN,
13066 .doit = nl80211_stop_nan,
13067 .policy = nl80211_policy,
13068 .flags = GENL_ADMIN_PERM,
13069 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13070 NL80211_FLAG_NEED_RTNL,
13071 },
13072 {
13073 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13074 .doit = nl80211_nan_add_func,
13075 .policy = nl80211_policy,
13076 .flags = GENL_ADMIN_PERM,
13077 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13078 NL80211_FLAG_NEED_RTNL,
13079 },
13080 {
13081 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13082 .doit = nl80211_nan_del_func,
13083 .policy = nl80211_policy,
13084 .flags = GENL_ADMIN_PERM,
13085 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13086 NL80211_FLAG_NEED_RTNL,
13087 },
13088 {
13089 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13090 .doit = nl80211_nan_change_config,
13091 .policy = nl80211_policy,
13092 .flags = GENL_ADMIN_PERM,
13093 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13094 NL80211_FLAG_NEED_RTNL,
13095 },
13096 {
13097 .cmd = NL80211_CMD_SET_MCAST_RATE,
13098 .doit = nl80211_set_mcast_rate,
13099 .policy = nl80211_policy,
13100 .flags = GENL_UNS_ADMIN_PERM,
13101 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13102 NL80211_FLAG_NEED_RTNL,
13103 },
13104 {
13105 .cmd = NL80211_CMD_SET_MAC_ACL,
13106 .doit = nl80211_set_mac_acl,
13107 .policy = nl80211_policy,
13108 .flags = GENL_UNS_ADMIN_PERM,
13109 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13110 NL80211_FLAG_NEED_RTNL,
13111 },
13112 {
13113 .cmd = NL80211_CMD_RADAR_DETECT,
13114 .doit = nl80211_start_radar_detection,
13115 .policy = nl80211_policy,
13116 .flags = GENL_UNS_ADMIN_PERM,
13117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13118 NL80211_FLAG_NEED_RTNL,
13119 },
13120 {
13121 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13122 .doit = nl80211_get_protocol_features,
13123 .policy = nl80211_policy,
13124 },
13125 {
13126 .cmd = NL80211_CMD_UPDATE_FT_IES,
13127 .doit = nl80211_update_ft_ies,
13128 .policy = nl80211_policy,
13129 .flags = GENL_UNS_ADMIN_PERM,
13130 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13131 NL80211_FLAG_NEED_RTNL,
13132 },
13133 {
13134 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13135 .doit = nl80211_crit_protocol_start,
13136 .policy = nl80211_policy,
13137 .flags = GENL_UNS_ADMIN_PERM,
13138 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13139 NL80211_FLAG_NEED_RTNL,
13140 },
13141 {
13142 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13143 .doit = nl80211_crit_protocol_stop,
13144 .policy = nl80211_policy,
13145 .flags = GENL_UNS_ADMIN_PERM,
13146 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13147 NL80211_FLAG_NEED_RTNL,
13148 },
13149 {
13150 .cmd = NL80211_CMD_GET_COALESCE,
13151 .doit = nl80211_get_coalesce,
13152 .policy = nl80211_policy,
13153 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13154 NL80211_FLAG_NEED_RTNL,
13155 },
13156 {
13157 .cmd = NL80211_CMD_SET_COALESCE,
13158 .doit = nl80211_set_coalesce,
13159 .policy = nl80211_policy,
13160 .flags = GENL_UNS_ADMIN_PERM,
13161 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13162 NL80211_FLAG_NEED_RTNL,
13163 },
13164 {
13165 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13166 .doit = nl80211_channel_switch,
13167 .policy = nl80211_policy,
13168 .flags = GENL_UNS_ADMIN_PERM,
13169 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13170 NL80211_FLAG_NEED_RTNL,
13171 },
13172 {
13173 .cmd = NL80211_CMD_VENDOR,
13174 .doit = nl80211_vendor_cmd,
13175 .dumpit = nl80211_vendor_cmd_dump,
13176 .policy = nl80211_policy,
13177 .flags = GENL_UNS_ADMIN_PERM,
13178 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13179 NL80211_FLAG_NEED_RTNL,
13180 },
13181 {
13182 .cmd = NL80211_CMD_SET_QOS_MAP,
13183 .doit = nl80211_set_qos_map,
13184 .policy = nl80211_policy,
13185 .flags = GENL_UNS_ADMIN_PERM,
13186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13187 NL80211_FLAG_NEED_RTNL,
13188 },
13189 {
13190 .cmd = NL80211_CMD_ADD_TX_TS,
13191 .doit = nl80211_add_tx_ts,
13192 .policy = nl80211_policy,
13193 .flags = GENL_UNS_ADMIN_PERM,
13194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13195 NL80211_FLAG_NEED_RTNL,
13196 },
13197 {
13198 .cmd = NL80211_CMD_DEL_TX_TS,
13199 .doit = nl80211_del_tx_ts,
13200 .policy = nl80211_policy,
13201 .flags = GENL_UNS_ADMIN_PERM,
13202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13203 NL80211_FLAG_NEED_RTNL,
13204 },
13205 {
13206 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13207 .doit = nl80211_tdls_channel_switch,
13208 .policy = nl80211_policy,
13209 .flags = GENL_UNS_ADMIN_PERM,
13210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13211 NL80211_FLAG_NEED_RTNL,
13212 },
13213 {
13214 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13215 .doit = nl80211_tdls_cancel_channel_switch,
13216 .policy = nl80211_policy,
13217 .flags = GENL_UNS_ADMIN_PERM,
13218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13219 NL80211_FLAG_NEED_RTNL,
13220 },
13221 {
13222 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13223 .doit = nl80211_set_multicast_to_unicast,
13224 .policy = nl80211_policy,
13225 .flags = GENL_UNS_ADMIN_PERM,
13226 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13227 NL80211_FLAG_NEED_RTNL,
13228 },
13229 {
13230 .cmd = NL80211_CMD_SET_PMK,
13231 .doit = nl80211_set_pmk,
13232 .policy = nl80211_policy,
13233 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13234 NL80211_FLAG_NEED_RTNL,
13235 },
13236 {
13237 .cmd = NL80211_CMD_DEL_PMK,
13238 .doit = nl80211_del_pmk,
13239 .policy = nl80211_policy,
13240 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13241 NL80211_FLAG_NEED_RTNL,
13242 },
13243
13244 };
13245
13246 static struct genl_family nl80211_fam __ro_after_init = {
13247 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13248 .hdrsize = 0, /* no private header */
13249 .version = 1, /* no particular meaning now */
13250 .maxattr = NL80211_ATTR_MAX,
13251 .netnsok = true,
13252 .pre_doit = nl80211_pre_doit,
13253 .post_doit = nl80211_post_doit,
13254 .module = THIS_MODULE,
13255 .ops = nl80211_ops,
13256 .n_ops = ARRAY_SIZE(nl80211_ops),
13257 .mcgrps = nl80211_mcgrps,
13258 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13259 };
13260
13261 /* notification functions */
13262
13263 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13264 enum nl80211_commands cmd)
13265 {
13266 struct sk_buff *msg;
13267 struct nl80211_dump_wiphy_state state = {};
13268
13269 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13270 cmd != NL80211_CMD_DEL_WIPHY);
13271
13272 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13273 if (!msg)
13274 return;
13275
13276 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13277 nlmsg_free(msg);
13278 return;
13279 }
13280
13281 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13282 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13283 }
13284
13285 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13286 struct wireless_dev *wdev,
13287 enum nl80211_commands cmd)
13288 {
13289 struct sk_buff *msg;
13290
13291 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13292 cmd != NL80211_CMD_DEL_INTERFACE);
13293
13294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13295 if (!msg)
13296 return;
13297
13298 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13299 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13300 nlmsg_free(msg);
13301 return;
13302 }
13303
13304 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13305 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13306 }
13307
13308 static int nl80211_add_scan_req(struct sk_buff *msg,
13309 struct cfg80211_registered_device *rdev)
13310 {
13311 struct cfg80211_scan_request *req = rdev->scan_req;
13312 struct nlattr *nest;
13313 int i;
13314
13315 if (WARN_ON(!req))
13316 return 0;
13317
13318 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13319 if (!nest)
13320 goto nla_put_failure;
13321 for (i = 0; i < req->n_ssids; i++) {
13322 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13323 goto nla_put_failure;
13324 }
13325 nla_nest_end(msg, nest);
13326
13327 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13328 if (!nest)
13329 goto nla_put_failure;
13330 for (i = 0; i < req->n_channels; i++) {
13331 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13332 goto nla_put_failure;
13333 }
13334 nla_nest_end(msg, nest);
13335
13336 if (req->ie &&
13337 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13338 goto nla_put_failure;
13339
13340 if (req->flags &&
13341 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13342 goto nla_put_failure;
13343
13344 if (req->info.scan_start_tsf &&
13345 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13346 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13347 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13348 req->info.tsf_bssid)))
13349 goto nla_put_failure;
13350
13351 return 0;
13352 nla_put_failure:
13353 return -ENOBUFS;
13354 }
13355
13356 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13357 struct cfg80211_registered_device *rdev,
13358 struct wireless_dev *wdev,
13359 u32 portid, u32 seq, int flags,
13360 u32 cmd)
13361 {
13362 void *hdr;
13363
13364 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13365 if (!hdr)
13366 return -1;
13367
13368 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13369 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13370 wdev->netdev->ifindex)) ||
13371 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13372 NL80211_ATTR_PAD))
13373 goto nla_put_failure;
13374
13375 /* ignore errors and send incomplete event anyway */
13376 nl80211_add_scan_req(msg, rdev);
13377
13378 genlmsg_end(msg, hdr);
13379 return 0;
13380
13381 nla_put_failure:
13382 genlmsg_cancel(msg, hdr);
13383 return -EMSGSIZE;
13384 }
13385
13386 static int
13387 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13388 struct cfg80211_sched_scan_request *req, u32 cmd)
13389 {
13390 void *hdr;
13391
13392 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13393 if (!hdr)
13394 return -1;
13395
13396 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13397 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13398 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13399 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13400 NL80211_ATTR_PAD))
13401 goto nla_put_failure;
13402
13403 genlmsg_end(msg, hdr);
13404 return 0;
13405
13406 nla_put_failure:
13407 genlmsg_cancel(msg, hdr);
13408 return -EMSGSIZE;
13409 }
13410
13411 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13412 struct wireless_dev *wdev)
13413 {
13414 struct sk_buff *msg;
13415
13416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13417 if (!msg)
13418 return;
13419
13420 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13421 NL80211_CMD_TRIGGER_SCAN) < 0) {
13422 nlmsg_free(msg);
13423 return;
13424 }
13425
13426 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13427 NL80211_MCGRP_SCAN, GFP_KERNEL);
13428 }
13429
13430 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13431 struct wireless_dev *wdev, bool aborted)
13432 {
13433 struct sk_buff *msg;
13434
13435 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13436 if (!msg)
13437 return NULL;
13438
13439 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13440 aborted ? NL80211_CMD_SCAN_ABORTED :
13441 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13442 nlmsg_free(msg);
13443 return NULL;
13444 }
13445
13446 return msg;
13447 }
13448
13449 /* send message created by nl80211_build_scan_msg() */
13450 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13451 struct sk_buff *msg)
13452 {
13453 if (!msg)
13454 return;
13455
13456 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13457 NL80211_MCGRP_SCAN, GFP_KERNEL);
13458 }
13459
13460 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13461 {
13462 struct sk_buff *msg;
13463
13464 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13465 if (!msg)
13466 return;
13467
13468 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13469 nlmsg_free(msg);
13470 return;
13471 }
13472
13473 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13474 NL80211_MCGRP_SCAN, GFP_KERNEL);
13475 }
13476
13477 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13478 struct regulatory_request *request)
13479 {
13480 /* Userspace can always count this one always being set */
13481 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13482 goto nla_put_failure;
13483
13484 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13485 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13486 NL80211_REGDOM_TYPE_WORLD))
13487 goto nla_put_failure;
13488 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13489 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13490 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13491 goto nla_put_failure;
13492 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13493 request->intersect) {
13494 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13495 NL80211_REGDOM_TYPE_INTERSECTION))
13496 goto nla_put_failure;
13497 } else {
13498 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13499 NL80211_REGDOM_TYPE_COUNTRY) ||
13500 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13501 request->alpha2))
13502 goto nla_put_failure;
13503 }
13504
13505 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13506 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13507
13508 if (wiphy &&
13509 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13510 goto nla_put_failure;
13511
13512 if (wiphy &&
13513 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13514 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13515 goto nla_put_failure;
13516 }
13517
13518 return true;
13519
13520 nla_put_failure:
13521 return false;
13522 }
13523
13524 /*
13525 * This can happen on global regulatory changes or device specific settings
13526 * based on custom regulatory domains.
13527 */
13528 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13529 struct regulatory_request *request)
13530 {
13531 struct sk_buff *msg;
13532 void *hdr;
13533
13534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13535 if (!msg)
13536 return;
13537
13538 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13539 if (!hdr) {
13540 nlmsg_free(msg);
13541 return;
13542 }
13543
13544 if (nl80211_reg_change_event_fill(msg, request) == false)
13545 goto nla_put_failure;
13546
13547 genlmsg_end(msg, hdr);
13548
13549 rcu_read_lock();
13550 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13551 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13552 rcu_read_unlock();
13553
13554 return;
13555
13556 nla_put_failure:
13557 genlmsg_cancel(msg, hdr);
13558 nlmsg_free(msg);
13559 }
13560
13561 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13562 struct net_device *netdev,
13563 const u8 *buf, size_t len,
13564 enum nl80211_commands cmd, gfp_t gfp,
13565 int uapsd_queues)
13566 {
13567 struct sk_buff *msg;
13568 void *hdr;
13569
13570 msg = nlmsg_new(100 + len, gfp);
13571 if (!msg)
13572 return;
13573
13574 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13575 if (!hdr) {
13576 nlmsg_free(msg);
13577 return;
13578 }
13579
13580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13581 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13582 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13583 goto nla_put_failure;
13584
13585 if (uapsd_queues >= 0) {
13586 struct nlattr *nla_wmm =
13587 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13588 if (!nla_wmm)
13589 goto nla_put_failure;
13590
13591 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13592 uapsd_queues))
13593 goto nla_put_failure;
13594
13595 nla_nest_end(msg, nla_wmm);
13596 }
13597
13598 genlmsg_end(msg, hdr);
13599
13600 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13601 NL80211_MCGRP_MLME, gfp);
13602 return;
13603
13604 nla_put_failure:
13605 genlmsg_cancel(msg, hdr);
13606 nlmsg_free(msg);
13607 }
13608
13609 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13610 struct net_device *netdev, const u8 *buf,
13611 size_t len, gfp_t gfp)
13612 {
13613 nl80211_send_mlme_event(rdev, netdev, buf, len,
13614 NL80211_CMD_AUTHENTICATE, gfp, -1);
13615 }
13616
13617 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13618 struct net_device *netdev, const u8 *buf,
13619 size_t len, gfp_t gfp, int uapsd_queues)
13620 {
13621 nl80211_send_mlme_event(rdev, netdev, buf, len,
13622 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13623 }
13624
13625 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13626 struct net_device *netdev, const u8 *buf,
13627 size_t len, gfp_t gfp)
13628 {
13629 nl80211_send_mlme_event(rdev, netdev, buf, len,
13630 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13631 }
13632
13633 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13634 struct net_device *netdev, const u8 *buf,
13635 size_t len, gfp_t gfp)
13636 {
13637 nl80211_send_mlme_event(rdev, netdev, buf, len,
13638 NL80211_CMD_DISASSOCIATE, gfp, -1);
13639 }
13640
13641 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13642 size_t len)
13643 {
13644 struct wireless_dev *wdev = dev->ieee80211_ptr;
13645 struct wiphy *wiphy = wdev->wiphy;
13646 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13647 const struct ieee80211_mgmt *mgmt = (void *)buf;
13648 u32 cmd;
13649
13650 if (WARN_ON(len < 2))
13651 return;
13652
13653 if (ieee80211_is_deauth(mgmt->frame_control))
13654 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13655 else
13656 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13657
13658 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13659 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13660 }
13661 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13662
13663 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13664 struct net_device *netdev, int cmd,
13665 const u8 *addr, gfp_t gfp)
13666 {
13667 struct sk_buff *msg;
13668 void *hdr;
13669
13670 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13671 if (!msg)
13672 return;
13673
13674 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13675 if (!hdr) {
13676 nlmsg_free(msg);
13677 return;
13678 }
13679
13680 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13681 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13682 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13683 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13684 goto nla_put_failure;
13685
13686 genlmsg_end(msg, hdr);
13687
13688 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13689 NL80211_MCGRP_MLME, gfp);
13690 return;
13691
13692 nla_put_failure:
13693 genlmsg_cancel(msg, hdr);
13694 nlmsg_free(msg);
13695 }
13696
13697 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13698 struct net_device *netdev, const u8 *addr,
13699 gfp_t gfp)
13700 {
13701 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13702 addr, gfp);
13703 }
13704
13705 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13706 struct net_device *netdev, const u8 *addr,
13707 gfp_t gfp)
13708 {
13709 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13710 addr, gfp);
13711 }
13712
13713 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13714 struct net_device *netdev,
13715 struct cfg80211_connect_resp_params *cr,
13716 gfp_t gfp)
13717 {
13718 struct sk_buff *msg;
13719 void *hdr;
13720
13721 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13722 cr->fils_kek_len + cr->pmk_len +
13723 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13724 if (!msg)
13725 return;
13726
13727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13728 if (!hdr) {
13729 nlmsg_free(msg);
13730 return;
13731 }
13732
13733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13734 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13735 (cr->bssid &&
13736 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13737 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13738 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13739 cr->status) ||
13740 (cr->status < 0 &&
13741 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13742 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13743 cr->timeout_reason))) ||
13744 (cr->req_ie &&
13745 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13746 (cr->resp_ie &&
13747 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13748 cr->resp_ie)) ||
13749 (cr->update_erp_next_seq_num &&
13750 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13751 cr->fils_erp_next_seq_num)) ||
13752 (cr->status == WLAN_STATUS_SUCCESS &&
13753 ((cr->fils_kek &&
13754 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13755 cr->fils_kek)) ||
13756 (cr->pmk &&
13757 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13758 (cr->pmkid &&
13759 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13760 goto nla_put_failure;
13761
13762 genlmsg_end(msg, hdr);
13763
13764 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13765 NL80211_MCGRP_MLME, gfp);
13766 return;
13767
13768 nla_put_failure:
13769 genlmsg_cancel(msg, hdr);
13770 nlmsg_free(msg);
13771 }
13772
13773 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13774 struct net_device *netdev,
13775 struct cfg80211_roam_info *info, gfp_t gfp)
13776 {
13777 struct sk_buff *msg;
13778 void *hdr;
13779 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13780
13781 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13782 if (!msg)
13783 return;
13784
13785 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13786 if (!hdr) {
13787 nlmsg_free(msg);
13788 return;
13789 }
13790
13791 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13792 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13793 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13794 (info->req_ie &&
13795 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13796 info->req_ie)) ||
13797 (info->resp_ie &&
13798 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13799 info->resp_ie)) ||
13800 (info->authorized &&
13801 nla_put_flag(msg, NL80211_ATTR_PORT_AUTHORIZED)))
13802 goto nla_put_failure;
13803
13804 genlmsg_end(msg, hdr);
13805
13806 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13807 NL80211_MCGRP_MLME, gfp);
13808 return;
13809
13810 nla_put_failure:
13811 genlmsg_cancel(msg, hdr);
13812 nlmsg_free(msg);
13813 }
13814
13815 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13816 struct net_device *netdev, u16 reason,
13817 const u8 *ie, size_t ie_len, bool from_ap)
13818 {
13819 struct sk_buff *msg;
13820 void *hdr;
13821
13822 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13823 if (!msg)
13824 return;
13825
13826 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13827 if (!hdr) {
13828 nlmsg_free(msg);
13829 return;
13830 }
13831
13832 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13833 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13834 (from_ap && reason &&
13835 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13836 (from_ap &&
13837 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13838 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13839 goto nla_put_failure;
13840
13841 genlmsg_end(msg, hdr);
13842
13843 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13844 NL80211_MCGRP_MLME, GFP_KERNEL);
13845 return;
13846
13847 nla_put_failure:
13848 genlmsg_cancel(msg, hdr);
13849 nlmsg_free(msg);
13850 }
13851
13852 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13853 struct net_device *netdev, const u8 *bssid,
13854 gfp_t gfp)
13855 {
13856 struct sk_buff *msg;
13857 void *hdr;
13858
13859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13860 if (!msg)
13861 return;
13862
13863 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13864 if (!hdr) {
13865 nlmsg_free(msg);
13866 return;
13867 }
13868
13869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13871 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13872 goto nla_put_failure;
13873
13874 genlmsg_end(msg, hdr);
13875
13876 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13877 NL80211_MCGRP_MLME, gfp);
13878 return;
13879
13880 nla_put_failure:
13881 genlmsg_cancel(msg, hdr);
13882 nlmsg_free(msg);
13883 }
13884
13885 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13886 const u8* ie, u8 ie_len, gfp_t gfp)
13887 {
13888 struct wireless_dev *wdev = dev->ieee80211_ptr;
13889 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13890 struct sk_buff *msg;
13891 void *hdr;
13892
13893 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13894 return;
13895
13896 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13897
13898 msg = nlmsg_new(100 + ie_len, gfp);
13899 if (!msg)
13900 return;
13901
13902 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13903 if (!hdr) {
13904 nlmsg_free(msg);
13905 return;
13906 }
13907
13908 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13909 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13910 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13911 (ie_len && ie &&
13912 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13913 goto nla_put_failure;
13914
13915 genlmsg_end(msg, hdr);
13916
13917 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13918 NL80211_MCGRP_MLME, gfp);
13919 return;
13920
13921 nla_put_failure:
13922 genlmsg_cancel(msg, hdr);
13923 nlmsg_free(msg);
13924 }
13925 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13926
13927 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13928 struct net_device *netdev, const u8 *addr,
13929 enum nl80211_key_type key_type, int key_id,
13930 const u8 *tsc, gfp_t gfp)
13931 {
13932 struct sk_buff *msg;
13933 void *hdr;
13934
13935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13936 if (!msg)
13937 return;
13938
13939 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13940 if (!hdr) {
13941 nlmsg_free(msg);
13942 return;
13943 }
13944
13945 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13946 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13947 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13948 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13949 (key_id != -1 &&
13950 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13951 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13952 goto nla_put_failure;
13953
13954 genlmsg_end(msg, hdr);
13955
13956 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13957 NL80211_MCGRP_MLME, gfp);
13958 return;
13959
13960 nla_put_failure:
13961 genlmsg_cancel(msg, hdr);
13962 nlmsg_free(msg);
13963 }
13964
13965 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13966 struct ieee80211_channel *channel_before,
13967 struct ieee80211_channel *channel_after)
13968 {
13969 struct sk_buff *msg;
13970 void *hdr;
13971 struct nlattr *nl_freq;
13972
13973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13974 if (!msg)
13975 return;
13976
13977 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13978 if (!hdr) {
13979 nlmsg_free(msg);
13980 return;
13981 }
13982
13983 /*
13984 * Since we are applying the beacon hint to a wiphy we know its
13985 * wiphy_idx is valid
13986 */
13987 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13988 goto nla_put_failure;
13989
13990 /* Before */
13991 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13992 if (!nl_freq)
13993 goto nla_put_failure;
13994 if (nl80211_msg_put_channel(msg, channel_before, false))
13995 goto nla_put_failure;
13996 nla_nest_end(msg, nl_freq);
13997
13998 /* After */
13999 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14000 if (!nl_freq)
14001 goto nla_put_failure;
14002 if (nl80211_msg_put_channel(msg, channel_after, false))
14003 goto nla_put_failure;
14004 nla_nest_end(msg, nl_freq);
14005
14006 genlmsg_end(msg, hdr);
14007
14008 rcu_read_lock();
14009 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14010 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14011 rcu_read_unlock();
14012
14013 return;
14014
14015 nla_put_failure:
14016 genlmsg_cancel(msg, hdr);
14017 nlmsg_free(msg);
14018 }
14019
14020 static void nl80211_send_remain_on_chan_event(
14021 int cmd, struct cfg80211_registered_device *rdev,
14022 struct wireless_dev *wdev, u64 cookie,
14023 struct ieee80211_channel *chan,
14024 unsigned int duration, gfp_t gfp)
14025 {
14026 struct sk_buff *msg;
14027 void *hdr;
14028
14029 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14030 if (!msg)
14031 return;
14032
14033 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14034 if (!hdr) {
14035 nlmsg_free(msg);
14036 return;
14037 }
14038
14039 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14040 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14041 wdev->netdev->ifindex)) ||
14042 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14043 NL80211_ATTR_PAD) ||
14044 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14045 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14046 NL80211_CHAN_NO_HT) ||
14047 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14048 NL80211_ATTR_PAD))
14049 goto nla_put_failure;
14050
14051 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14052 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14053 goto nla_put_failure;
14054
14055 genlmsg_end(msg, hdr);
14056
14057 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14058 NL80211_MCGRP_MLME, gfp);
14059 return;
14060
14061 nla_put_failure:
14062 genlmsg_cancel(msg, hdr);
14063 nlmsg_free(msg);
14064 }
14065
14066 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14067 struct ieee80211_channel *chan,
14068 unsigned int duration, gfp_t gfp)
14069 {
14070 struct wiphy *wiphy = wdev->wiphy;
14071 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14072
14073 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14074 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14075 rdev, wdev, cookie, chan,
14076 duration, gfp);
14077 }
14078 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14079
14080 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14081 struct ieee80211_channel *chan,
14082 gfp_t gfp)
14083 {
14084 struct wiphy *wiphy = wdev->wiphy;
14085 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14086
14087 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14088 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14089 rdev, wdev, cookie, chan, 0, gfp);
14090 }
14091 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14092
14093 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14094 struct station_info *sinfo, gfp_t gfp)
14095 {
14096 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14097 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14098 struct sk_buff *msg;
14099
14100 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14101
14102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14103 if (!msg)
14104 return;
14105
14106 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14107 rdev, dev, mac_addr, sinfo) < 0) {
14108 nlmsg_free(msg);
14109 return;
14110 }
14111
14112 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14113 NL80211_MCGRP_MLME, gfp);
14114 }
14115 EXPORT_SYMBOL(cfg80211_new_sta);
14116
14117 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14118 struct station_info *sinfo, gfp_t gfp)
14119 {
14120 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14121 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14122 struct sk_buff *msg;
14123 struct station_info empty_sinfo = {};
14124
14125 if (!sinfo)
14126 sinfo = &empty_sinfo;
14127
14128 trace_cfg80211_del_sta(dev, mac_addr);
14129
14130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14131 if (!msg)
14132 return;
14133
14134 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14135 rdev, dev, mac_addr, sinfo) < 0) {
14136 nlmsg_free(msg);
14137 return;
14138 }
14139
14140 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14141 NL80211_MCGRP_MLME, gfp);
14142 }
14143 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14144
14145 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14146 enum nl80211_connect_failed_reason reason,
14147 gfp_t gfp)
14148 {
14149 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14150 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14151 struct sk_buff *msg;
14152 void *hdr;
14153
14154 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14155 if (!msg)
14156 return;
14157
14158 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14159 if (!hdr) {
14160 nlmsg_free(msg);
14161 return;
14162 }
14163
14164 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14165 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14166 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14167 goto nla_put_failure;
14168
14169 genlmsg_end(msg, hdr);
14170
14171 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14172 NL80211_MCGRP_MLME, gfp);
14173 return;
14174
14175 nla_put_failure:
14176 genlmsg_cancel(msg, hdr);
14177 nlmsg_free(msg);
14178 }
14179 EXPORT_SYMBOL(cfg80211_conn_failed);
14180
14181 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14182 const u8 *addr, gfp_t gfp)
14183 {
14184 struct wireless_dev *wdev = dev->ieee80211_ptr;
14185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14186 struct sk_buff *msg;
14187 void *hdr;
14188 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
14189
14190 if (!nlportid)
14191 return false;
14192
14193 msg = nlmsg_new(100, gfp);
14194 if (!msg)
14195 return true;
14196
14197 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14198 if (!hdr) {
14199 nlmsg_free(msg);
14200 return true;
14201 }
14202
14203 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14204 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14205 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14206 goto nla_put_failure;
14207
14208 genlmsg_end(msg, hdr);
14209 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14210 return true;
14211
14212 nla_put_failure:
14213 genlmsg_cancel(msg, hdr);
14214 nlmsg_free(msg);
14215 return true;
14216 }
14217
14218 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14219 const u8 *addr, gfp_t gfp)
14220 {
14221 struct wireless_dev *wdev = dev->ieee80211_ptr;
14222 bool ret;
14223
14224 trace_cfg80211_rx_spurious_frame(dev, addr);
14225
14226 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14227 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14228 trace_cfg80211_return_bool(false);
14229 return false;
14230 }
14231 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14232 addr, gfp);
14233 trace_cfg80211_return_bool(ret);
14234 return ret;
14235 }
14236 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14237
14238 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14239 const u8 *addr, gfp_t gfp)
14240 {
14241 struct wireless_dev *wdev = dev->ieee80211_ptr;
14242 bool ret;
14243
14244 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14245
14246 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14247 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14248 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14249 trace_cfg80211_return_bool(false);
14250 return false;
14251 }
14252 ret = __nl80211_unexpected_frame(dev,
14253 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14254 addr, gfp);
14255 trace_cfg80211_return_bool(ret);
14256 return ret;
14257 }
14258 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14259
14260 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14261 struct wireless_dev *wdev, u32 nlportid,
14262 int freq, int sig_dbm,
14263 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14264 {
14265 struct net_device *netdev = wdev->netdev;
14266 struct sk_buff *msg;
14267 void *hdr;
14268
14269 msg = nlmsg_new(100 + len, gfp);
14270 if (!msg)
14271 return -ENOMEM;
14272
14273 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14274 if (!hdr) {
14275 nlmsg_free(msg);
14276 return -ENOMEM;
14277 }
14278
14279 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14280 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14281 netdev->ifindex)) ||
14282 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14283 NL80211_ATTR_PAD) ||
14284 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14285 (sig_dbm &&
14286 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14287 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14288 (flags &&
14289 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14290 goto nla_put_failure;
14291
14292 genlmsg_end(msg, hdr);
14293
14294 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14295
14296 nla_put_failure:
14297 genlmsg_cancel(msg, hdr);
14298 nlmsg_free(msg);
14299 return -ENOBUFS;
14300 }
14301
14302 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14303 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14304 {
14305 struct wiphy *wiphy = wdev->wiphy;
14306 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14307 struct net_device *netdev = wdev->netdev;
14308 struct sk_buff *msg;
14309 void *hdr;
14310
14311 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14312
14313 msg = nlmsg_new(100 + len, gfp);
14314 if (!msg)
14315 return;
14316
14317 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14318 if (!hdr) {
14319 nlmsg_free(msg);
14320 return;
14321 }
14322
14323 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14324 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14325 netdev->ifindex)) ||
14326 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14327 NL80211_ATTR_PAD) ||
14328 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14329 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14330 NL80211_ATTR_PAD) ||
14331 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14332 goto nla_put_failure;
14333
14334 genlmsg_end(msg, hdr);
14335
14336 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14337 NL80211_MCGRP_MLME, gfp);
14338 return;
14339
14340 nla_put_failure:
14341 genlmsg_cancel(msg, hdr);
14342 nlmsg_free(msg);
14343 }
14344 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14345
14346 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14347 const char *mac, gfp_t gfp)
14348 {
14349 struct wireless_dev *wdev = dev->ieee80211_ptr;
14350 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14351 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14352 void **cb;
14353
14354 if (!msg)
14355 return NULL;
14356
14357 cb = (void **)msg->cb;
14358
14359 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14360 if (!cb[0]) {
14361 nlmsg_free(msg);
14362 return NULL;
14363 }
14364
14365 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14366 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14367 goto nla_put_failure;
14368
14369 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14370 goto nla_put_failure;
14371
14372 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14373 if (!cb[1])
14374 goto nla_put_failure;
14375
14376 cb[2] = rdev;
14377
14378 return msg;
14379 nla_put_failure:
14380 nlmsg_free(msg);
14381 return NULL;
14382 }
14383
14384 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14385 {
14386 void **cb = (void **)msg->cb;
14387 struct cfg80211_registered_device *rdev = cb[2];
14388
14389 nla_nest_end(msg, cb[1]);
14390 genlmsg_end(msg, cb[0]);
14391
14392 memset(msg->cb, 0, sizeof(msg->cb));
14393
14394 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14395 NL80211_MCGRP_MLME, gfp);
14396 }
14397
14398 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14399 enum nl80211_cqm_rssi_threshold_event rssi_event,
14400 s32 rssi_level, gfp_t gfp)
14401 {
14402 struct sk_buff *msg;
14403 struct wireless_dev *wdev = dev->ieee80211_ptr;
14404 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14405
14406 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14407
14408 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14409 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14410 return;
14411
14412 if (wdev->cqm_config) {
14413 wdev->cqm_config->last_rssi_event_value = rssi_level;
14414
14415 cfg80211_cqm_rssi_update(rdev, dev);
14416
14417 if (rssi_level == 0)
14418 rssi_level = wdev->cqm_config->last_rssi_event_value;
14419 }
14420
14421 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14422 if (!msg)
14423 return;
14424
14425 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14426 rssi_event))
14427 goto nla_put_failure;
14428
14429 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14430 rssi_level))
14431 goto nla_put_failure;
14432
14433 cfg80211_send_cqm(msg, gfp);
14434
14435 return;
14436
14437 nla_put_failure:
14438 nlmsg_free(msg);
14439 }
14440 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14441
14442 void cfg80211_cqm_txe_notify(struct net_device *dev,
14443 const u8 *peer, u32 num_packets,
14444 u32 rate, u32 intvl, gfp_t gfp)
14445 {
14446 struct sk_buff *msg;
14447
14448 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14449 if (!msg)
14450 return;
14451
14452 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14453 goto nla_put_failure;
14454
14455 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14456 goto nla_put_failure;
14457
14458 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14459 goto nla_put_failure;
14460
14461 cfg80211_send_cqm(msg, gfp);
14462 return;
14463
14464 nla_put_failure:
14465 nlmsg_free(msg);
14466 }
14467 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14468
14469 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14470 const u8 *peer, u32 num_packets, gfp_t gfp)
14471 {
14472 struct sk_buff *msg;
14473
14474 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14475
14476 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14477 if (!msg)
14478 return;
14479
14480 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14481 goto nla_put_failure;
14482
14483 cfg80211_send_cqm(msg, gfp);
14484 return;
14485
14486 nla_put_failure:
14487 nlmsg_free(msg);
14488 }
14489 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14490
14491 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14492 {
14493 struct sk_buff *msg;
14494
14495 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14496 if (!msg)
14497 return;
14498
14499 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14500 goto nla_put_failure;
14501
14502 cfg80211_send_cqm(msg, gfp);
14503 return;
14504
14505 nla_put_failure:
14506 nlmsg_free(msg);
14507 }
14508 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14509
14510 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14511 struct net_device *netdev, const u8 *bssid,
14512 const u8 *replay_ctr, gfp_t gfp)
14513 {
14514 struct sk_buff *msg;
14515 struct nlattr *rekey_attr;
14516 void *hdr;
14517
14518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14519 if (!msg)
14520 return;
14521
14522 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14523 if (!hdr) {
14524 nlmsg_free(msg);
14525 return;
14526 }
14527
14528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14530 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14531 goto nla_put_failure;
14532
14533 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14534 if (!rekey_attr)
14535 goto nla_put_failure;
14536
14537 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14538 NL80211_REPLAY_CTR_LEN, replay_ctr))
14539 goto nla_put_failure;
14540
14541 nla_nest_end(msg, rekey_attr);
14542
14543 genlmsg_end(msg, hdr);
14544
14545 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14546 NL80211_MCGRP_MLME, gfp);
14547 return;
14548
14549 nla_put_failure:
14550 genlmsg_cancel(msg, hdr);
14551 nlmsg_free(msg);
14552 }
14553
14554 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14555 const u8 *replay_ctr, gfp_t gfp)
14556 {
14557 struct wireless_dev *wdev = dev->ieee80211_ptr;
14558 struct wiphy *wiphy = wdev->wiphy;
14559 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14560
14561 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14562 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14563 }
14564 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14565
14566 static void
14567 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14568 struct net_device *netdev, int index,
14569 const u8 *bssid, bool preauth, gfp_t gfp)
14570 {
14571 struct sk_buff *msg;
14572 struct nlattr *attr;
14573 void *hdr;
14574
14575 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14576 if (!msg)
14577 return;
14578
14579 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14580 if (!hdr) {
14581 nlmsg_free(msg);
14582 return;
14583 }
14584
14585 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14586 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14587 goto nla_put_failure;
14588
14589 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14590 if (!attr)
14591 goto nla_put_failure;
14592
14593 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14594 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14595 (preauth &&
14596 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14597 goto nla_put_failure;
14598
14599 nla_nest_end(msg, attr);
14600
14601 genlmsg_end(msg, hdr);
14602
14603 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14604 NL80211_MCGRP_MLME, gfp);
14605 return;
14606
14607 nla_put_failure:
14608 genlmsg_cancel(msg, hdr);
14609 nlmsg_free(msg);
14610 }
14611
14612 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14613 const u8 *bssid, bool preauth, gfp_t gfp)
14614 {
14615 struct wireless_dev *wdev = dev->ieee80211_ptr;
14616 struct wiphy *wiphy = wdev->wiphy;
14617 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14618
14619 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14620 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14621 }
14622 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14623
14624 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14625 struct net_device *netdev,
14626 struct cfg80211_chan_def *chandef,
14627 gfp_t gfp,
14628 enum nl80211_commands notif,
14629 u8 count)
14630 {
14631 struct sk_buff *msg;
14632 void *hdr;
14633
14634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14635 if (!msg)
14636 return;
14637
14638 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14639 if (!hdr) {
14640 nlmsg_free(msg);
14641 return;
14642 }
14643
14644 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14645 goto nla_put_failure;
14646
14647 if (nl80211_send_chandef(msg, chandef))
14648 goto nla_put_failure;
14649
14650 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14651 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14652 goto nla_put_failure;
14653
14654 genlmsg_end(msg, hdr);
14655
14656 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14657 NL80211_MCGRP_MLME, gfp);
14658 return;
14659
14660 nla_put_failure:
14661 genlmsg_cancel(msg, hdr);
14662 nlmsg_free(msg);
14663 }
14664
14665 void cfg80211_ch_switch_notify(struct net_device *dev,
14666 struct cfg80211_chan_def *chandef)
14667 {
14668 struct wireless_dev *wdev = dev->ieee80211_ptr;
14669 struct wiphy *wiphy = wdev->wiphy;
14670 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14671
14672 ASSERT_WDEV_LOCK(wdev);
14673
14674 trace_cfg80211_ch_switch_notify(dev, chandef);
14675
14676 wdev->chandef = *chandef;
14677 wdev->preset_chandef = *chandef;
14678 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14679 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14680 }
14681 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14682
14683 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14684 struct cfg80211_chan_def *chandef,
14685 u8 count)
14686 {
14687 struct wireless_dev *wdev = dev->ieee80211_ptr;
14688 struct wiphy *wiphy = wdev->wiphy;
14689 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14690
14691 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14692
14693 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14694 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14695 }
14696 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14697
14698 void
14699 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14700 const struct cfg80211_chan_def *chandef,
14701 enum nl80211_radar_event event,
14702 struct net_device *netdev, gfp_t gfp)
14703 {
14704 struct sk_buff *msg;
14705 void *hdr;
14706
14707 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14708 if (!msg)
14709 return;
14710
14711 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14712 if (!hdr) {
14713 nlmsg_free(msg);
14714 return;
14715 }
14716
14717 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14718 goto nla_put_failure;
14719
14720 /* NOP and radar events don't need a netdev parameter */
14721 if (netdev) {
14722 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14723
14724 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14725 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14726 NL80211_ATTR_PAD))
14727 goto nla_put_failure;
14728 }
14729
14730 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14731 goto nla_put_failure;
14732
14733 if (nl80211_send_chandef(msg, chandef))
14734 goto nla_put_failure;
14735
14736 genlmsg_end(msg, hdr);
14737
14738 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14739 NL80211_MCGRP_MLME, gfp);
14740 return;
14741
14742 nla_put_failure:
14743 genlmsg_cancel(msg, hdr);
14744 nlmsg_free(msg);
14745 }
14746
14747 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14748 u64 cookie, bool acked, gfp_t gfp)
14749 {
14750 struct wireless_dev *wdev = dev->ieee80211_ptr;
14751 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14752 struct sk_buff *msg;
14753 void *hdr;
14754
14755 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14756
14757 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14758
14759 if (!msg)
14760 return;
14761
14762 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14763 if (!hdr) {
14764 nlmsg_free(msg);
14765 return;
14766 }
14767
14768 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14769 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14770 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14771 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14772 NL80211_ATTR_PAD) ||
14773 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14774 goto nla_put_failure;
14775
14776 genlmsg_end(msg, hdr);
14777
14778 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14779 NL80211_MCGRP_MLME, gfp);
14780 return;
14781
14782 nla_put_failure:
14783 genlmsg_cancel(msg, hdr);
14784 nlmsg_free(msg);
14785 }
14786 EXPORT_SYMBOL(cfg80211_probe_status);
14787
14788 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14789 const u8 *frame, size_t len,
14790 int freq, int sig_dbm)
14791 {
14792 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14793 struct sk_buff *msg;
14794 void *hdr;
14795 struct cfg80211_beacon_registration *reg;
14796
14797 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14798
14799 spin_lock_bh(&rdev->beacon_registrations_lock);
14800 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14801 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14802 if (!msg) {
14803 spin_unlock_bh(&rdev->beacon_registrations_lock);
14804 return;
14805 }
14806
14807 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14808 if (!hdr)
14809 goto nla_put_failure;
14810
14811 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14812 (freq &&
14813 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14814 (sig_dbm &&
14815 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14816 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14817 goto nla_put_failure;
14818
14819 genlmsg_end(msg, hdr);
14820
14821 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14822 }
14823 spin_unlock_bh(&rdev->beacon_registrations_lock);
14824 return;
14825
14826 nla_put_failure:
14827 spin_unlock_bh(&rdev->beacon_registrations_lock);
14828 if (hdr)
14829 genlmsg_cancel(msg, hdr);
14830 nlmsg_free(msg);
14831 }
14832 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14833
14834 #ifdef CONFIG_PM
14835 static int cfg80211_net_detect_results(struct sk_buff *msg,
14836 struct cfg80211_wowlan_wakeup *wakeup)
14837 {
14838 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14839 struct nlattr *nl_results, *nl_match, *nl_freqs;
14840 int i, j;
14841
14842 nl_results = nla_nest_start(
14843 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14844 if (!nl_results)
14845 return -EMSGSIZE;
14846
14847 for (i = 0; i < nd->n_matches; i++) {
14848 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14849
14850 nl_match = nla_nest_start(msg, i);
14851 if (!nl_match)
14852 break;
14853
14854 /* The SSID attribute is optional in nl80211, but for
14855 * simplicity reasons it's always present in the
14856 * cfg80211 structure. If a driver can't pass the
14857 * SSID, that needs to be changed. A zero length SSID
14858 * is still a valid SSID (wildcard), so it cannot be
14859 * used for this purpose.
14860 */
14861 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14862 match->ssid.ssid)) {
14863 nla_nest_cancel(msg, nl_match);
14864 goto out;
14865 }
14866
14867 if (match->n_channels) {
14868 nl_freqs = nla_nest_start(
14869 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14870 if (!nl_freqs) {
14871 nla_nest_cancel(msg, nl_match);
14872 goto out;
14873 }
14874
14875 for (j = 0; j < match->n_channels; j++) {
14876 if (nla_put_u32(msg, j, match->channels[j])) {
14877 nla_nest_cancel(msg, nl_freqs);
14878 nla_nest_cancel(msg, nl_match);
14879 goto out;
14880 }
14881 }
14882
14883 nla_nest_end(msg, nl_freqs);
14884 }
14885
14886 nla_nest_end(msg, nl_match);
14887 }
14888
14889 out:
14890 nla_nest_end(msg, nl_results);
14891 return 0;
14892 }
14893
14894 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14895 struct cfg80211_wowlan_wakeup *wakeup,
14896 gfp_t gfp)
14897 {
14898 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14899 struct sk_buff *msg;
14900 void *hdr;
14901 int size = 200;
14902
14903 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14904
14905 if (wakeup)
14906 size += wakeup->packet_present_len;
14907
14908 msg = nlmsg_new(size, gfp);
14909 if (!msg)
14910 return;
14911
14912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14913 if (!hdr)
14914 goto free_msg;
14915
14916 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14917 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14918 NL80211_ATTR_PAD))
14919 goto free_msg;
14920
14921 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14922 wdev->netdev->ifindex))
14923 goto free_msg;
14924
14925 if (wakeup) {
14926 struct nlattr *reasons;
14927
14928 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14929 if (!reasons)
14930 goto free_msg;
14931
14932 if (wakeup->disconnect &&
14933 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14934 goto free_msg;
14935 if (wakeup->magic_pkt &&
14936 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14937 goto free_msg;
14938 if (wakeup->gtk_rekey_failure &&
14939 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14940 goto free_msg;
14941 if (wakeup->eap_identity_req &&
14942 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14943 goto free_msg;
14944 if (wakeup->four_way_handshake &&
14945 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14946 goto free_msg;
14947 if (wakeup->rfkill_release &&
14948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14949 goto free_msg;
14950
14951 if (wakeup->pattern_idx >= 0 &&
14952 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14953 wakeup->pattern_idx))
14954 goto free_msg;
14955
14956 if (wakeup->tcp_match &&
14957 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14958 goto free_msg;
14959
14960 if (wakeup->tcp_connlost &&
14961 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14962 goto free_msg;
14963
14964 if (wakeup->tcp_nomoretokens &&
14965 nla_put_flag(msg,
14966 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14967 goto free_msg;
14968
14969 if (wakeup->packet) {
14970 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14971 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14972
14973 if (!wakeup->packet_80211) {
14974 pkt_attr =
14975 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14976 len_attr =
14977 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14978 }
14979
14980 if (wakeup->packet_len &&
14981 nla_put_u32(msg, len_attr, wakeup->packet_len))
14982 goto free_msg;
14983
14984 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14985 wakeup->packet))
14986 goto free_msg;
14987 }
14988
14989 if (wakeup->net_detect &&
14990 cfg80211_net_detect_results(msg, wakeup))
14991 goto free_msg;
14992
14993 nla_nest_end(msg, reasons);
14994 }
14995
14996 genlmsg_end(msg, hdr);
14997
14998 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14999 NL80211_MCGRP_MLME, gfp);
15000 return;
15001
15002 free_msg:
15003 nlmsg_free(msg);
15004 }
15005 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15006 #endif
15007
15008 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15009 enum nl80211_tdls_operation oper,
15010 u16 reason_code, gfp_t gfp)
15011 {
15012 struct wireless_dev *wdev = dev->ieee80211_ptr;
15013 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15014 struct sk_buff *msg;
15015 void *hdr;
15016
15017 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15018 reason_code);
15019
15020 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15021 if (!msg)
15022 return;
15023
15024 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15025 if (!hdr) {
15026 nlmsg_free(msg);
15027 return;
15028 }
15029
15030 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15031 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15032 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15033 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15034 (reason_code > 0 &&
15035 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15036 goto nla_put_failure;
15037
15038 genlmsg_end(msg, hdr);
15039
15040 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15041 NL80211_MCGRP_MLME, gfp);
15042 return;
15043
15044 nla_put_failure:
15045 genlmsg_cancel(msg, hdr);
15046 nlmsg_free(msg);
15047 }
15048 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15049
15050 static int nl80211_netlink_notify(struct notifier_block * nb,
15051 unsigned long state,
15052 void *_notify)
15053 {
15054 struct netlink_notify *notify = _notify;
15055 struct cfg80211_registered_device *rdev;
15056 struct wireless_dev *wdev;
15057 struct cfg80211_beacon_registration *reg, *tmp;
15058
15059 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15060 return NOTIFY_DONE;
15061
15062 rcu_read_lock();
15063
15064 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15065 struct cfg80211_sched_scan_request *sched_scan_req;
15066
15067 list_for_each_entry_rcu(sched_scan_req,
15068 &rdev->sched_scan_req_list,
15069 list) {
15070 if (sched_scan_req->owner_nlportid == notify->portid) {
15071 sched_scan_req->nl_owner_dead = true;
15072 schedule_work(&rdev->sched_scan_stop_wk);
15073 }
15074 }
15075
15076 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15077 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15078
15079 if (wdev->owner_nlportid == notify->portid) {
15080 wdev->nl_owner_dead = true;
15081 schedule_work(&rdev->destroy_work);
15082 } else if (wdev->conn_owner_nlportid == notify->portid) {
15083 schedule_work(&wdev->disconnect_wk);
15084 }
15085 }
15086
15087 spin_lock_bh(&rdev->beacon_registrations_lock);
15088 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15089 list) {
15090 if (reg->nlportid == notify->portid) {
15091 list_del(&reg->list);
15092 kfree(reg);
15093 break;
15094 }
15095 }
15096 spin_unlock_bh(&rdev->beacon_registrations_lock);
15097 }
15098
15099 rcu_read_unlock();
15100
15101 /*
15102 * It is possible that the user space process that is controlling the
15103 * indoor setting disappeared, so notify the regulatory core.
15104 */
15105 regulatory_netlink_notify(notify->portid);
15106 return NOTIFY_OK;
15107 }
15108
15109 static struct notifier_block nl80211_netlink_notifier = {
15110 .notifier_call = nl80211_netlink_notify,
15111 };
15112
15113 void cfg80211_ft_event(struct net_device *netdev,
15114 struct cfg80211_ft_event_params *ft_event)
15115 {
15116 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15117 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15118 struct sk_buff *msg;
15119 void *hdr;
15120
15121 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15122
15123 if (!ft_event->target_ap)
15124 return;
15125
15126 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15127 if (!msg)
15128 return;
15129
15130 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15131 if (!hdr)
15132 goto out;
15133
15134 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15135 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15136 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15137 goto out;
15138
15139 if (ft_event->ies &&
15140 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15141 goto out;
15142 if (ft_event->ric_ies &&
15143 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15144 ft_event->ric_ies))
15145 goto out;
15146
15147 genlmsg_end(msg, hdr);
15148
15149 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15150 NL80211_MCGRP_MLME, GFP_KERNEL);
15151 return;
15152 out:
15153 nlmsg_free(msg);
15154 }
15155 EXPORT_SYMBOL(cfg80211_ft_event);
15156
15157 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15158 {
15159 struct cfg80211_registered_device *rdev;
15160 struct sk_buff *msg;
15161 void *hdr;
15162 u32 nlportid;
15163
15164 rdev = wiphy_to_rdev(wdev->wiphy);
15165 if (!rdev->crit_proto_nlportid)
15166 return;
15167
15168 nlportid = rdev->crit_proto_nlportid;
15169 rdev->crit_proto_nlportid = 0;
15170
15171 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15172 if (!msg)
15173 return;
15174
15175 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15176 if (!hdr)
15177 goto nla_put_failure;
15178
15179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15180 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15181 NL80211_ATTR_PAD))
15182 goto nla_put_failure;
15183
15184 genlmsg_end(msg, hdr);
15185
15186 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15187 return;
15188
15189 nla_put_failure:
15190 if (hdr)
15191 genlmsg_cancel(msg, hdr);
15192 nlmsg_free(msg);
15193 }
15194 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15195
15196 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15197 {
15198 struct wiphy *wiphy = wdev->wiphy;
15199 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15200 struct sk_buff *msg;
15201 void *hdr;
15202
15203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15204 if (!msg)
15205 return;
15206
15207 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15208 if (!hdr)
15209 goto out;
15210
15211 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15212 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15213 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15214 NL80211_ATTR_PAD))
15215 goto out;
15216
15217 genlmsg_end(msg, hdr);
15218
15219 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15220 NL80211_MCGRP_MLME, GFP_KERNEL);
15221 return;
15222 out:
15223 nlmsg_free(msg);
15224 }
15225
15226 /* initialisation/exit functions */
15227
15228 int __init nl80211_init(void)
15229 {
15230 int err;
15231
15232 err = genl_register_family(&nl80211_fam);
15233 if (err)
15234 return err;
15235
15236 err = netlink_register_notifier(&nl80211_netlink_notifier);
15237 if (err)
15238 goto err_out;
15239
15240 return 0;
15241 err_out:
15242 genl_unregister_family(&nl80211_fam);
15243 return err;
15244 }
15245
15246 void nl80211_exit(void)
15247 {
15248 netlink_unregister_notifier(&nl80211_netlink_notifier);
15249 genl_unregister_family(&nl80211_fam);
15250 }
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