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vlan: Keep NETIF_F_HW_CSUM similar to other software devices
[mirror_ubuntu-hirsute-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] = { .type = NLA_BINARY,
295 .len = WLAN_PMKID_LEN },
296 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
297 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
298 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
299 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
300 .len = IEEE80211_MAX_DATA_LEN },
301 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
302 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
303 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
304 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
305 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
306 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
307 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
308 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
309 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
310 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
311 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
312 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
313 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
314 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
315 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
317 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
318 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
319 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
320 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
321 .len = IEEE80211_MAX_DATA_LEN },
322 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
325 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
326 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
327 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
328 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
329 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
331 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
332 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
333 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
334 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
337 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
338 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
339 .len = NL80211_HT_CAPABILITY_LEN
340 },
341 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
342 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
343 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
344 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
345 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
346 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
347 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
348 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
349 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
350 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
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] = { .type = NLA_BINARY,
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(7)) ||
2768 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
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 n_channels++;
6474 /*
6475 * Some hardware has a limited channel list for
6476 * scanning, and it is pretty much nonsensical
6477 * to scan for a channel twice, so disallow that
6478 * and don't require drivers to check that the
6479 * channel list they get isn't longer than what
6480 * they can scan, as long as they can scan all
6481 * the channels they registered at once.
6482 */
6483 nla_for_each_nested(attr2, freqs, tmp2)
6484 if (attr1 != attr2 &&
6485 nla_get_u32(attr1) == nla_get_u32(attr2))
6486 return 0;
6487 }
6488
6489 return n_channels;
6490 }
6491
6492 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6493 {
6494 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6495 }
6496
6497 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6498 struct cfg80211_bss_selection *bss_select)
6499 {
6500 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6501 struct nlattr *nest;
6502 int err;
6503 bool found = false;
6504 int i;
6505
6506 /* only process one nested attribute */
6507 nest = nla_data(nla);
6508 if (!nla_ok(nest, nla_len(nest)))
6509 return -EINVAL;
6510
6511 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6512 nl80211_bss_select_policy, NULL);
6513 if (err)
6514 return err;
6515
6516 /* only one attribute may be given */
6517 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6518 if (attr[i]) {
6519 if (found)
6520 return -EINVAL;
6521 found = true;
6522 }
6523 }
6524
6525 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6526
6527 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6528 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6529
6530 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6531 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6532 bss_select->param.band_pref =
6533 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6534 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6535 return -EINVAL;
6536 }
6537
6538 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6539 struct nl80211_bss_select_rssi_adjust *adj_param;
6540
6541 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6542 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6543 bss_select->param.adjust.band = adj_param->band;
6544 bss_select->param.adjust.delta = adj_param->delta;
6545 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6546 return -EINVAL;
6547 }
6548
6549 /* user-space did not provide behaviour attribute */
6550 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6551 return -EINVAL;
6552
6553 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6554 return -EINVAL;
6555
6556 return 0;
6557 }
6558
6559 static int nl80211_parse_random_mac(struct nlattr **attrs,
6560 u8 *mac_addr, u8 *mac_addr_mask)
6561 {
6562 int i;
6563
6564 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6565 eth_zero_addr(mac_addr);
6566 eth_zero_addr(mac_addr_mask);
6567 mac_addr[0] = 0x2;
6568 mac_addr_mask[0] = 0x3;
6569
6570 return 0;
6571 }
6572
6573 /* need both or none */
6574 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6575 return -EINVAL;
6576
6577 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6578 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6579
6580 /* don't allow or configure an mcast address */
6581 if (!is_multicast_ether_addr(mac_addr_mask) ||
6582 is_multicast_ether_addr(mac_addr))
6583 return -EINVAL;
6584
6585 /*
6586 * allow users to pass a MAC address that has bits set outside
6587 * of the mask, but don't bother drivers with having to deal
6588 * with such bits
6589 */
6590 for (i = 0; i < ETH_ALEN; i++)
6591 mac_addr[i] &= mac_addr_mask[i];
6592
6593 return 0;
6594 }
6595
6596 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6597 {
6598 ASSERT_WDEV_LOCK(wdev);
6599
6600 if (!cfg80211_beaconing_iface_active(wdev))
6601 return true;
6602
6603 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6604 return true;
6605
6606 return regulatory_pre_cac_allowed(wdev->wiphy);
6607 }
6608
6609 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6610 {
6611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6612 struct wireless_dev *wdev = info->user_ptr[1];
6613 struct cfg80211_scan_request *request;
6614 struct nlattr *attr;
6615 struct wiphy *wiphy;
6616 int err, tmp, n_ssids = 0, n_channels, i;
6617 size_t ie_len;
6618
6619 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6620 return -EINVAL;
6621
6622 wiphy = &rdev->wiphy;
6623
6624 if (wdev->iftype == NL80211_IFTYPE_NAN)
6625 return -EOPNOTSUPP;
6626
6627 if (!rdev->ops->scan)
6628 return -EOPNOTSUPP;
6629
6630 if (rdev->scan_req || rdev->scan_msg) {
6631 err = -EBUSY;
6632 goto unlock;
6633 }
6634
6635 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6636 n_channels = validate_scan_freqs(
6637 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6638 if (!n_channels) {
6639 err = -EINVAL;
6640 goto unlock;
6641 }
6642 } else {
6643 n_channels = ieee80211_get_num_supported_channels(wiphy);
6644 }
6645
6646 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6647 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6648 n_ssids++;
6649
6650 if (n_ssids > wiphy->max_scan_ssids) {
6651 err = -EINVAL;
6652 goto unlock;
6653 }
6654
6655 if (info->attrs[NL80211_ATTR_IE])
6656 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6657 else
6658 ie_len = 0;
6659
6660 if (ie_len > wiphy->max_scan_ie_len) {
6661 err = -EINVAL;
6662 goto unlock;
6663 }
6664
6665 request = kzalloc(sizeof(*request)
6666 + sizeof(*request->ssids) * n_ssids
6667 + sizeof(*request->channels) * n_channels
6668 + ie_len, GFP_KERNEL);
6669 if (!request) {
6670 err = -ENOMEM;
6671 goto unlock;
6672 }
6673
6674 if (n_ssids)
6675 request->ssids = (void *)&request->channels[n_channels];
6676 request->n_ssids = n_ssids;
6677 if (ie_len) {
6678 if (n_ssids)
6679 request->ie = (void *)(request->ssids + n_ssids);
6680 else
6681 request->ie = (void *)(request->channels + n_channels);
6682 }
6683
6684 i = 0;
6685 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6686 /* user specified, bail out if channel not found */
6687 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6688 struct ieee80211_channel *chan;
6689
6690 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6691
6692 if (!chan) {
6693 err = -EINVAL;
6694 goto out_free;
6695 }
6696
6697 /* ignore disabled channels */
6698 if (chan->flags & IEEE80211_CHAN_DISABLED)
6699 continue;
6700
6701 request->channels[i] = chan;
6702 i++;
6703 }
6704 } else {
6705 enum nl80211_band band;
6706
6707 /* all channels */
6708 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6709 int j;
6710
6711 if (!wiphy->bands[band])
6712 continue;
6713 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6714 struct ieee80211_channel *chan;
6715
6716 chan = &wiphy->bands[band]->channels[j];
6717
6718 if (chan->flags & IEEE80211_CHAN_DISABLED)
6719 continue;
6720
6721 request->channels[i] = chan;
6722 i++;
6723 }
6724 }
6725 }
6726
6727 if (!i) {
6728 err = -EINVAL;
6729 goto out_free;
6730 }
6731
6732 request->n_channels = i;
6733
6734 wdev_lock(wdev);
6735 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6736 struct ieee80211_channel *chan;
6737
6738 if (request->n_channels != 1) {
6739 wdev_unlock(wdev);
6740 err = -EBUSY;
6741 goto out_free;
6742 }
6743
6744 chan = request->channels[0];
6745 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6746 wdev_unlock(wdev);
6747 err = -EBUSY;
6748 goto out_free;
6749 }
6750 }
6751 wdev_unlock(wdev);
6752
6753 i = 0;
6754 if (n_ssids) {
6755 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6756 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6757 err = -EINVAL;
6758 goto out_free;
6759 }
6760 request->ssids[i].ssid_len = nla_len(attr);
6761 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6762 i++;
6763 }
6764 }
6765
6766 if (info->attrs[NL80211_ATTR_IE]) {
6767 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6768 memcpy((void *)request->ie,
6769 nla_data(info->attrs[NL80211_ATTR_IE]),
6770 request->ie_len);
6771 }
6772
6773 for (i = 0; i < NUM_NL80211_BANDS; i++)
6774 if (wiphy->bands[i])
6775 request->rates[i] =
6776 (1 << wiphy->bands[i]->n_bitrates) - 1;
6777
6778 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6779 nla_for_each_nested(attr,
6780 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6781 tmp) {
6782 enum nl80211_band band = nla_type(attr);
6783
6784 if (band < 0 || band >= NUM_NL80211_BANDS) {
6785 err = -EINVAL;
6786 goto out_free;
6787 }
6788
6789 if (!wiphy->bands[band])
6790 continue;
6791
6792 err = ieee80211_get_ratemask(wiphy->bands[band],
6793 nla_data(attr),
6794 nla_len(attr),
6795 &request->rates[band]);
6796 if (err)
6797 goto out_free;
6798 }
6799 }
6800
6801 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6802 if (!wiphy_ext_feature_isset(wiphy,
6803 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6804 err = -EOPNOTSUPP;
6805 goto out_free;
6806 }
6807
6808 request->duration =
6809 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6810 request->duration_mandatory =
6811 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6812 }
6813
6814 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6815 request->flags = nla_get_u32(
6816 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6817 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6818 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6819 err = -EOPNOTSUPP;
6820 goto out_free;
6821 }
6822
6823 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6824 if (!(wiphy->features &
6825 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6826 err = -EOPNOTSUPP;
6827 goto out_free;
6828 }
6829
6830 if (wdev->current_bss) {
6831 err = -EOPNOTSUPP;
6832 goto out_free;
6833 }
6834
6835 err = nl80211_parse_random_mac(info->attrs,
6836 request->mac_addr,
6837 request->mac_addr_mask);
6838 if (err)
6839 goto out_free;
6840 }
6841 }
6842
6843 request->no_cck =
6844 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6845
6846 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6847 * BSSID to scan for. This was problematic because that same attribute
6848 * was already used for another purpose (local random MAC address). The
6849 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6850 * compatibility with older userspace components, also use the
6851 * NL80211_ATTR_MAC value here if it can be determined to be used for
6852 * the specific BSSID use case instead of the random MAC address
6853 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6854 */
6855 if (info->attrs[NL80211_ATTR_BSSID])
6856 memcpy(request->bssid,
6857 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6858 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6859 info->attrs[NL80211_ATTR_MAC])
6860 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6861 ETH_ALEN);
6862 else
6863 eth_broadcast_addr(request->bssid);
6864
6865 request->wdev = wdev;
6866 request->wiphy = &rdev->wiphy;
6867 request->scan_start = jiffies;
6868
6869 rdev->scan_req = request;
6870 err = rdev_scan(rdev, request);
6871
6872 if (!err) {
6873 nl80211_send_scan_start(rdev, wdev);
6874 if (wdev->netdev)
6875 dev_hold(wdev->netdev);
6876 } else {
6877 out_free:
6878 rdev->scan_req = NULL;
6879 kfree(request);
6880 }
6881
6882 unlock:
6883 return err;
6884 }
6885
6886 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6887 {
6888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6889 struct wireless_dev *wdev = info->user_ptr[1];
6890
6891 if (!rdev->ops->abort_scan)
6892 return -EOPNOTSUPP;
6893
6894 if (rdev->scan_msg)
6895 return 0;
6896
6897 if (!rdev->scan_req)
6898 return -ENOENT;
6899
6900 rdev_abort_scan(rdev, wdev);
6901 return 0;
6902 }
6903
6904 static int
6905 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6906 struct cfg80211_sched_scan_request *request,
6907 struct nlattr **attrs)
6908 {
6909 int tmp, err, i = 0;
6910 struct nlattr *attr;
6911
6912 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6913 u32 interval;
6914
6915 /*
6916 * If scan plans are not specified,
6917 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6918 * case one scan plan will be set with the specified scan
6919 * interval and infinite number of iterations.
6920 */
6921 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6922 if (!interval)
6923 return -EINVAL;
6924
6925 request->scan_plans[0].interval =
6926 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6927 if (!request->scan_plans[0].interval)
6928 return -EINVAL;
6929
6930 if (request->scan_plans[0].interval >
6931 wiphy->max_sched_scan_plan_interval)
6932 request->scan_plans[0].interval =
6933 wiphy->max_sched_scan_plan_interval;
6934
6935 return 0;
6936 }
6937
6938 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6939 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6940
6941 if (WARN_ON(i >= n_plans))
6942 return -EINVAL;
6943
6944 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6945 attr, nl80211_plan_policy, NULL);
6946 if (err)
6947 return err;
6948
6949 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6950 return -EINVAL;
6951
6952 request->scan_plans[i].interval =
6953 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6954 if (!request->scan_plans[i].interval ||
6955 request->scan_plans[i].interval >
6956 wiphy->max_sched_scan_plan_interval)
6957 return -EINVAL;
6958
6959 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6960 request->scan_plans[i].iterations =
6961 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6962 if (!request->scan_plans[i].iterations ||
6963 (request->scan_plans[i].iterations >
6964 wiphy->max_sched_scan_plan_iterations))
6965 return -EINVAL;
6966 } else if (i < n_plans - 1) {
6967 /*
6968 * All scan plans but the last one must specify
6969 * a finite number of iterations
6970 */
6971 return -EINVAL;
6972 }
6973
6974 i++;
6975 }
6976
6977 /*
6978 * The last scan plan must not specify the number of
6979 * iterations, it is supposed to run infinitely
6980 */
6981 if (request->scan_plans[n_plans - 1].iterations)
6982 return -EINVAL;
6983
6984 return 0;
6985 }
6986
6987 static struct cfg80211_sched_scan_request *
6988 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6989 struct nlattr **attrs, int max_match_sets)
6990 {
6991 struct cfg80211_sched_scan_request *request;
6992 struct nlattr *attr;
6993 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6994 enum nl80211_band band;
6995 size_t ie_len;
6996 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6997 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6998
6999 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7000 return ERR_PTR(-EINVAL);
7001
7002 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7003 n_channels = validate_scan_freqs(
7004 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7005 if (!n_channels)
7006 return ERR_PTR(-EINVAL);
7007 } else {
7008 n_channels = ieee80211_get_num_supported_channels(wiphy);
7009 }
7010
7011 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7012 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7013 tmp)
7014 n_ssids++;
7015
7016 if (n_ssids > wiphy->max_sched_scan_ssids)
7017 return ERR_PTR(-EINVAL);
7018
7019 /*
7020 * First, count the number of 'real' matchsets. Due to an issue with
7021 * the old implementation, matchsets containing only the RSSI attribute
7022 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7023 * RSSI for all matchsets, rather than their own matchset for reporting
7024 * all APs with a strong RSSI. This is needed to be compatible with
7025 * older userspace that treated a matchset with only the RSSI as the
7026 * global RSSI for all other matchsets - if there are other matchsets.
7027 */
7028 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7029 nla_for_each_nested(attr,
7030 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7031 tmp) {
7032 struct nlattr *rssi;
7033
7034 err = nla_parse_nested(tb,
7035 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7036 attr, nl80211_match_policy,
7037 NULL);
7038 if (err)
7039 return ERR_PTR(err);
7040
7041 /* SSID and BSSID are mutually exclusive */
7042 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7043 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7044 return ERR_PTR(-EINVAL);
7045
7046 /* add other standalone attributes here */
7047 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7048 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7049 n_match_sets++;
7050 continue;
7051 }
7052 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7053 if (rssi)
7054 default_match_rssi = nla_get_s32(rssi);
7055 }
7056 }
7057
7058 /* However, if there's no other matchset, add the RSSI one */
7059 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7060 n_match_sets = 1;
7061
7062 if (n_match_sets > max_match_sets)
7063 return ERR_PTR(-EINVAL);
7064
7065 if (attrs[NL80211_ATTR_IE])
7066 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7067 else
7068 ie_len = 0;
7069
7070 if (ie_len > wiphy->max_sched_scan_ie_len)
7071 return ERR_PTR(-EINVAL);
7072
7073 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7074 /*
7075 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7076 * each scan plan already specifies its own interval
7077 */
7078 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7079 return ERR_PTR(-EINVAL);
7080
7081 nla_for_each_nested(attr,
7082 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7083 n_plans++;
7084 } else {
7085 /*
7086 * The scan interval attribute is kept for backward
7087 * compatibility. If no scan plans are specified and sched scan
7088 * interval is specified, one scan plan will be set with this
7089 * scan interval and infinite number of iterations.
7090 */
7091 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7092 return ERR_PTR(-EINVAL);
7093
7094 n_plans = 1;
7095 }
7096
7097 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7098 return ERR_PTR(-EINVAL);
7099
7100 if (!wiphy_ext_feature_isset(
7101 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7102 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7103 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7104 return ERR_PTR(-EINVAL);
7105
7106 request = kzalloc(sizeof(*request)
7107 + sizeof(*request->ssids) * n_ssids
7108 + sizeof(*request->match_sets) * n_match_sets
7109 + sizeof(*request->scan_plans) * n_plans
7110 + sizeof(*request->channels) * n_channels
7111 + ie_len, GFP_KERNEL);
7112 if (!request)
7113 return ERR_PTR(-ENOMEM);
7114
7115 if (n_ssids)
7116 request->ssids = (void *)&request->channels[n_channels];
7117 request->n_ssids = n_ssids;
7118 if (ie_len) {
7119 if (n_ssids)
7120 request->ie = (void *)(request->ssids + n_ssids);
7121 else
7122 request->ie = (void *)(request->channels + n_channels);
7123 }
7124
7125 if (n_match_sets) {
7126 if (request->ie)
7127 request->match_sets = (void *)(request->ie + ie_len);
7128 else if (n_ssids)
7129 request->match_sets =
7130 (void *)(request->ssids + n_ssids);
7131 else
7132 request->match_sets =
7133 (void *)(request->channels + n_channels);
7134 }
7135 request->n_match_sets = n_match_sets;
7136
7137 if (n_match_sets)
7138 request->scan_plans = (void *)(request->match_sets +
7139 n_match_sets);
7140 else if (request->ie)
7141 request->scan_plans = (void *)(request->ie + ie_len);
7142 else if (n_ssids)
7143 request->scan_plans = (void *)(request->ssids + n_ssids);
7144 else
7145 request->scan_plans = (void *)(request->channels + n_channels);
7146
7147 request->n_scan_plans = n_plans;
7148
7149 i = 0;
7150 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7151 /* user specified, bail out if channel not found */
7152 nla_for_each_nested(attr,
7153 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7154 tmp) {
7155 struct ieee80211_channel *chan;
7156
7157 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7158
7159 if (!chan) {
7160 err = -EINVAL;
7161 goto out_free;
7162 }
7163
7164 /* ignore disabled channels */
7165 if (chan->flags & IEEE80211_CHAN_DISABLED)
7166 continue;
7167
7168 request->channels[i] = chan;
7169 i++;
7170 }
7171 } else {
7172 /* all channels */
7173 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7174 int j;
7175
7176 if (!wiphy->bands[band])
7177 continue;
7178 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7179 struct ieee80211_channel *chan;
7180
7181 chan = &wiphy->bands[band]->channels[j];
7182
7183 if (chan->flags & IEEE80211_CHAN_DISABLED)
7184 continue;
7185
7186 request->channels[i] = chan;
7187 i++;
7188 }
7189 }
7190 }
7191
7192 if (!i) {
7193 err = -EINVAL;
7194 goto out_free;
7195 }
7196
7197 request->n_channels = i;
7198
7199 i = 0;
7200 if (n_ssids) {
7201 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7202 tmp) {
7203 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7204 err = -EINVAL;
7205 goto out_free;
7206 }
7207 request->ssids[i].ssid_len = nla_len(attr);
7208 memcpy(request->ssids[i].ssid, nla_data(attr),
7209 nla_len(attr));
7210 i++;
7211 }
7212 }
7213
7214 i = 0;
7215 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7216 nla_for_each_nested(attr,
7217 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7218 tmp) {
7219 struct nlattr *ssid, *bssid, *rssi;
7220
7221 err = nla_parse_nested(tb,
7222 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7223 attr, nl80211_match_policy,
7224 NULL);
7225 if (err)
7226 goto out_free;
7227 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7228 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7229 if (ssid || bssid) {
7230 if (WARN_ON(i >= n_match_sets)) {
7231 /* this indicates a programming error,
7232 * the loop above should have verified
7233 * things properly
7234 */
7235 err = -EINVAL;
7236 goto out_free;
7237 }
7238
7239 if (ssid) {
7240 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7241 err = -EINVAL;
7242 goto out_free;
7243 }
7244 memcpy(request->match_sets[i].ssid.ssid,
7245 nla_data(ssid), nla_len(ssid));
7246 request->match_sets[i].ssid.ssid_len =
7247 nla_len(ssid);
7248 }
7249 if (bssid) {
7250 if (nla_len(bssid) != ETH_ALEN) {
7251 err = -EINVAL;
7252 goto out_free;
7253 }
7254 memcpy(request->match_sets[i].bssid,
7255 nla_data(bssid), ETH_ALEN);
7256 }
7257
7258 /* special attribute - old implementation w/a */
7259 request->match_sets[i].rssi_thold =
7260 default_match_rssi;
7261 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7262 if (rssi)
7263 request->match_sets[i].rssi_thold =
7264 nla_get_s32(rssi);
7265 }
7266 i++;
7267 }
7268
7269 /* there was no other matchset, so the RSSI one is alone */
7270 if (i == 0 && n_match_sets)
7271 request->match_sets[0].rssi_thold = default_match_rssi;
7272
7273 request->min_rssi_thold = INT_MAX;
7274 for (i = 0; i < n_match_sets; i++)
7275 request->min_rssi_thold =
7276 min(request->match_sets[i].rssi_thold,
7277 request->min_rssi_thold);
7278 } else {
7279 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7280 }
7281
7282 if (ie_len) {
7283 request->ie_len = ie_len;
7284 memcpy((void *)request->ie,
7285 nla_data(attrs[NL80211_ATTR_IE]),
7286 request->ie_len);
7287 }
7288
7289 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7290 request->flags = nla_get_u32(
7291 attrs[NL80211_ATTR_SCAN_FLAGS]);
7292 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7293 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7294 err = -EOPNOTSUPP;
7295 goto out_free;
7296 }
7297
7298 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7299 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7300
7301 if (!wdev) /* must be net-detect */
7302 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7303
7304 if (!(wiphy->features & flg)) {
7305 err = -EOPNOTSUPP;
7306 goto out_free;
7307 }
7308
7309 if (wdev && wdev->current_bss) {
7310 err = -EOPNOTSUPP;
7311 goto out_free;
7312 }
7313
7314 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7315 request->mac_addr_mask);
7316 if (err)
7317 goto out_free;
7318 }
7319 }
7320
7321 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7322 request->delay =
7323 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7324
7325 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7326 request->relative_rssi = nla_get_s8(
7327 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7328 request->relative_rssi_set = true;
7329 }
7330
7331 if (request->relative_rssi_set &&
7332 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7333 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7334
7335 rssi_adjust = nla_data(
7336 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7337 request->rssi_adjust.band = rssi_adjust->band;
7338 request->rssi_adjust.delta = rssi_adjust->delta;
7339 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7340 err = -EINVAL;
7341 goto out_free;
7342 }
7343 }
7344
7345 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7346 if (err)
7347 goto out_free;
7348
7349 request->scan_start = jiffies;
7350
7351 return request;
7352
7353 out_free:
7354 kfree(request);
7355 return ERR_PTR(err);
7356 }
7357
7358 static int nl80211_start_sched_scan(struct sk_buff *skb,
7359 struct genl_info *info)
7360 {
7361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7362 struct net_device *dev = info->user_ptr[1];
7363 struct wireless_dev *wdev = dev->ieee80211_ptr;
7364 struct cfg80211_sched_scan_request *sched_scan_req;
7365 bool want_multi;
7366 int err;
7367
7368 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7369 return -EOPNOTSUPP;
7370
7371 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7372 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7373 if (err)
7374 return err;
7375
7376 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7377 info->attrs,
7378 rdev->wiphy.max_match_sets);
7379
7380 err = PTR_ERR_OR_ZERO(sched_scan_req);
7381 if (err)
7382 goto out_err;
7383
7384 /* leave request id zero for legacy request
7385 * or if driver does not support multi-scheduled scan
7386 */
7387 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7388 while (!sched_scan_req->reqid)
7389 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7390 }
7391
7392 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7393 if (err)
7394 goto out_free;
7395
7396 sched_scan_req->dev = dev;
7397 sched_scan_req->wiphy = &rdev->wiphy;
7398
7399 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7400 sched_scan_req->owner_nlportid = info->snd_portid;
7401
7402 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7403
7404 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7405 return 0;
7406
7407 out_free:
7408 kfree(sched_scan_req);
7409 out_err:
7410 return err;
7411 }
7412
7413 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7414 struct genl_info *info)
7415 {
7416 struct cfg80211_sched_scan_request *req;
7417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7418 u64 cookie;
7419
7420 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7421 return -EOPNOTSUPP;
7422
7423 if (info->attrs[NL80211_ATTR_COOKIE]) {
7424 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7425 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7426 }
7427
7428 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7429 struct cfg80211_sched_scan_request,
7430 list);
7431 if (!req || req->reqid ||
7432 (req->owner_nlportid &&
7433 req->owner_nlportid != info->snd_portid))
7434 return -ENOENT;
7435
7436 return cfg80211_stop_sched_scan_req(rdev, req, false);
7437 }
7438
7439 static int nl80211_start_radar_detection(struct sk_buff *skb,
7440 struct genl_info *info)
7441 {
7442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7443 struct net_device *dev = info->user_ptr[1];
7444 struct wireless_dev *wdev = dev->ieee80211_ptr;
7445 struct cfg80211_chan_def chandef;
7446 enum nl80211_dfs_regions dfs_region;
7447 unsigned int cac_time_ms;
7448 int err;
7449
7450 dfs_region = reg_get_dfs_region(wdev->wiphy);
7451 if (dfs_region == NL80211_DFS_UNSET)
7452 return -EINVAL;
7453
7454 err = nl80211_parse_chandef(rdev, info, &chandef);
7455 if (err)
7456 return err;
7457
7458 if (netif_carrier_ok(dev))
7459 return -EBUSY;
7460
7461 if (wdev->cac_started)
7462 return -EBUSY;
7463
7464 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7465 wdev->iftype);
7466 if (err < 0)
7467 return err;
7468
7469 if (err == 0)
7470 return -EINVAL;
7471
7472 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7473 return -EINVAL;
7474
7475 if (!rdev->ops->start_radar_detection)
7476 return -EOPNOTSUPP;
7477
7478 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7479 if (WARN_ON(!cac_time_ms))
7480 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7481
7482 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7483 if (!err) {
7484 wdev->chandef = chandef;
7485 wdev->cac_started = true;
7486 wdev->cac_start_time = jiffies;
7487 wdev->cac_time_ms = cac_time_ms;
7488 }
7489 return err;
7490 }
7491
7492 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7493 {
7494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7495 struct net_device *dev = info->user_ptr[1];
7496 struct wireless_dev *wdev = dev->ieee80211_ptr;
7497 struct cfg80211_csa_settings params;
7498 /* csa_attrs is defined static to avoid waste of stack size - this
7499 * function is called under RTNL lock, so this should not be a problem.
7500 */
7501 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7502 int err;
7503 bool need_new_beacon = false;
7504 int len, i;
7505 u32 cs_count;
7506
7507 if (!rdev->ops->channel_switch ||
7508 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7509 return -EOPNOTSUPP;
7510
7511 switch (dev->ieee80211_ptr->iftype) {
7512 case NL80211_IFTYPE_AP:
7513 case NL80211_IFTYPE_P2P_GO:
7514 need_new_beacon = true;
7515
7516 /* useless if AP is not running */
7517 if (!wdev->beacon_interval)
7518 return -ENOTCONN;
7519 break;
7520 case NL80211_IFTYPE_ADHOC:
7521 if (!wdev->ssid_len)
7522 return -ENOTCONN;
7523 break;
7524 case NL80211_IFTYPE_MESH_POINT:
7525 if (!wdev->mesh_id_len)
7526 return -ENOTCONN;
7527 break;
7528 default:
7529 return -EOPNOTSUPP;
7530 }
7531
7532 memset(&params, 0, sizeof(params));
7533
7534 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7535 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7536 return -EINVAL;
7537
7538 /* only important for AP, IBSS and mesh create IEs internally */
7539 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7540 return -EINVAL;
7541
7542 /* Even though the attribute is u32, the specification says
7543 * u8, so let's make sure we don't overflow.
7544 */
7545 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7546 if (cs_count > 255)
7547 return -EINVAL;
7548
7549 params.count = cs_count;
7550
7551 if (!need_new_beacon)
7552 goto skip_beacons;
7553
7554 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7555 if (err)
7556 return err;
7557
7558 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7559 info->attrs[NL80211_ATTR_CSA_IES],
7560 nl80211_policy, info->extack);
7561 if (err)
7562 return err;
7563
7564 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7565 if (err)
7566 return err;
7567
7568 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7569 return -EINVAL;
7570
7571 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7572 if (!len || (len % sizeof(u16)))
7573 return -EINVAL;
7574
7575 params.n_counter_offsets_beacon = len / sizeof(u16);
7576 if (rdev->wiphy.max_num_csa_counters &&
7577 (params.n_counter_offsets_beacon >
7578 rdev->wiphy.max_num_csa_counters))
7579 return -EINVAL;
7580
7581 params.counter_offsets_beacon =
7582 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7583
7584 /* sanity checks - counters should fit and be the same */
7585 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7586 u16 offset = params.counter_offsets_beacon[i];
7587
7588 if (offset >= params.beacon_csa.tail_len)
7589 return -EINVAL;
7590
7591 if (params.beacon_csa.tail[offset] != params.count)
7592 return -EINVAL;
7593 }
7594
7595 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7596 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7597 if (!len || (len % sizeof(u16)))
7598 return -EINVAL;
7599
7600 params.n_counter_offsets_presp = len / sizeof(u16);
7601 if (rdev->wiphy.max_num_csa_counters &&
7602 (params.n_counter_offsets_presp >
7603 rdev->wiphy.max_num_csa_counters))
7604 return -EINVAL;
7605
7606 params.counter_offsets_presp =
7607 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7608
7609 /* sanity checks - counters should fit and be the same */
7610 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7611 u16 offset = params.counter_offsets_presp[i];
7612
7613 if (offset >= params.beacon_csa.probe_resp_len)
7614 return -EINVAL;
7615
7616 if (params.beacon_csa.probe_resp[offset] !=
7617 params.count)
7618 return -EINVAL;
7619 }
7620 }
7621
7622 skip_beacons:
7623 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7624 if (err)
7625 return err;
7626
7627 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7628 wdev->iftype))
7629 return -EINVAL;
7630
7631 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7632 &params.chandef,
7633 wdev->iftype);
7634 if (err < 0)
7635 return err;
7636
7637 if (err > 0)
7638 params.radar_required = true;
7639
7640 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7641 params.block_tx = true;
7642
7643 wdev_lock(wdev);
7644 err = rdev_channel_switch(rdev, dev, &params);
7645 wdev_unlock(wdev);
7646
7647 return err;
7648 }
7649
7650 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7651 u32 seq, int flags,
7652 struct cfg80211_registered_device *rdev,
7653 struct wireless_dev *wdev,
7654 struct cfg80211_internal_bss *intbss)
7655 {
7656 struct cfg80211_bss *res = &intbss->pub;
7657 const struct cfg80211_bss_ies *ies;
7658 void *hdr;
7659 struct nlattr *bss;
7660
7661 ASSERT_WDEV_LOCK(wdev);
7662
7663 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7664 NL80211_CMD_NEW_SCAN_RESULTS);
7665 if (!hdr)
7666 return -1;
7667
7668 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7669
7670 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7671 goto nla_put_failure;
7672 if (wdev->netdev &&
7673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7674 goto nla_put_failure;
7675 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7676 NL80211_ATTR_PAD))
7677 goto nla_put_failure;
7678
7679 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7680 if (!bss)
7681 goto nla_put_failure;
7682 if ((!is_zero_ether_addr(res->bssid) &&
7683 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7684 goto nla_put_failure;
7685
7686 rcu_read_lock();
7687 /* indicate whether we have probe response data or not */
7688 if (rcu_access_pointer(res->proberesp_ies) &&
7689 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7690 goto fail_unlock_rcu;
7691
7692 /* this pointer prefers to be pointed to probe response data
7693 * but is always valid
7694 */
7695 ies = rcu_dereference(res->ies);
7696 if (ies) {
7697 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7698 NL80211_BSS_PAD))
7699 goto fail_unlock_rcu;
7700 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7701 ies->len, ies->data))
7702 goto fail_unlock_rcu;
7703 }
7704
7705 /* and this pointer is always (unless driver didn't know) beacon data */
7706 ies = rcu_dereference(res->beacon_ies);
7707 if (ies && ies->from_beacon) {
7708 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7709 NL80211_BSS_PAD))
7710 goto fail_unlock_rcu;
7711 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7712 ies->len, ies->data))
7713 goto fail_unlock_rcu;
7714 }
7715 rcu_read_unlock();
7716
7717 if (res->beacon_interval &&
7718 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7719 goto nla_put_failure;
7720 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7721 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7722 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7723 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7724 jiffies_to_msecs(jiffies - intbss->ts)))
7725 goto nla_put_failure;
7726
7727 if (intbss->parent_tsf &&
7728 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7729 intbss->parent_tsf, NL80211_BSS_PAD) ||
7730 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7731 intbss->parent_bssid)))
7732 goto nla_put_failure;
7733
7734 if (intbss->ts_boottime &&
7735 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7736 intbss->ts_boottime, NL80211_BSS_PAD))
7737 goto nla_put_failure;
7738
7739 switch (rdev->wiphy.signal_type) {
7740 case CFG80211_SIGNAL_TYPE_MBM:
7741 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7742 goto nla_put_failure;
7743 break;
7744 case CFG80211_SIGNAL_TYPE_UNSPEC:
7745 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7746 goto nla_put_failure;
7747 break;
7748 default:
7749 break;
7750 }
7751
7752 switch (wdev->iftype) {
7753 case NL80211_IFTYPE_P2P_CLIENT:
7754 case NL80211_IFTYPE_STATION:
7755 if (intbss == wdev->current_bss &&
7756 nla_put_u32(msg, NL80211_BSS_STATUS,
7757 NL80211_BSS_STATUS_ASSOCIATED))
7758 goto nla_put_failure;
7759 break;
7760 case NL80211_IFTYPE_ADHOC:
7761 if (intbss == wdev->current_bss &&
7762 nla_put_u32(msg, NL80211_BSS_STATUS,
7763 NL80211_BSS_STATUS_IBSS_JOINED))
7764 goto nla_put_failure;
7765 break;
7766 default:
7767 break;
7768 }
7769
7770 nla_nest_end(msg, bss);
7771
7772 genlmsg_end(msg, hdr);
7773 return 0;
7774
7775 fail_unlock_rcu:
7776 rcu_read_unlock();
7777 nla_put_failure:
7778 genlmsg_cancel(msg, hdr);
7779 return -EMSGSIZE;
7780 }
7781
7782 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7783 {
7784 struct cfg80211_registered_device *rdev;
7785 struct cfg80211_internal_bss *scan;
7786 struct wireless_dev *wdev;
7787 int start = cb->args[2], idx = 0;
7788 int err;
7789
7790 rtnl_lock();
7791 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7792 if (err) {
7793 rtnl_unlock();
7794 return err;
7795 }
7796
7797 wdev_lock(wdev);
7798 spin_lock_bh(&rdev->bss_lock);
7799 cfg80211_bss_expire(rdev);
7800
7801 cb->seq = rdev->bss_generation;
7802
7803 list_for_each_entry(scan, &rdev->bss_list, list) {
7804 if (++idx <= start)
7805 continue;
7806 if (nl80211_send_bss(skb, cb,
7807 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7808 rdev, wdev, scan) < 0) {
7809 idx--;
7810 break;
7811 }
7812 }
7813
7814 spin_unlock_bh(&rdev->bss_lock);
7815 wdev_unlock(wdev);
7816
7817 cb->args[2] = idx;
7818 rtnl_unlock();
7819
7820 return skb->len;
7821 }
7822
7823 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7824 int flags, struct net_device *dev,
7825 bool allow_radio_stats,
7826 struct survey_info *survey)
7827 {
7828 void *hdr;
7829 struct nlattr *infoattr;
7830
7831 /* skip radio stats if userspace didn't request them */
7832 if (!survey->channel && !allow_radio_stats)
7833 return 0;
7834
7835 hdr = nl80211hdr_put(msg, portid, seq, flags,
7836 NL80211_CMD_NEW_SURVEY_RESULTS);
7837 if (!hdr)
7838 return -ENOMEM;
7839
7840 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7841 goto nla_put_failure;
7842
7843 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7844 if (!infoattr)
7845 goto nla_put_failure;
7846
7847 if (survey->channel &&
7848 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7849 survey->channel->center_freq))
7850 goto nla_put_failure;
7851
7852 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7853 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7854 goto nla_put_failure;
7855 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7856 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7857 goto nla_put_failure;
7858 if ((survey->filled & SURVEY_INFO_TIME) &&
7859 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7860 survey->time, NL80211_SURVEY_INFO_PAD))
7861 goto nla_put_failure;
7862 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7863 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7864 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7865 goto nla_put_failure;
7866 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7867 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7868 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7869 goto nla_put_failure;
7870 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7871 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7872 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7873 goto nla_put_failure;
7874 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7875 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7876 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7877 goto nla_put_failure;
7878 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7879 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7880 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7881 goto nla_put_failure;
7882
7883 nla_nest_end(msg, infoattr);
7884
7885 genlmsg_end(msg, hdr);
7886 return 0;
7887
7888 nla_put_failure:
7889 genlmsg_cancel(msg, hdr);
7890 return -EMSGSIZE;
7891 }
7892
7893 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7894 {
7895 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7896 struct survey_info survey;
7897 struct cfg80211_registered_device *rdev;
7898 struct wireless_dev *wdev;
7899 int survey_idx = cb->args[2];
7900 int res;
7901 bool radio_stats;
7902
7903 rtnl_lock();
7904 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7905 if (res)
7906 goto out_err;
7907
7908 /* prepare_wdev_dump parsed the attributes */
7909 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7910
7911 if (!wdev->netdev) {
7912 res = -EINVAL;
7913 goto out_err;
7914 }
7915
7916 if (!rdev->ops->dump_survey) {
7917 res = -EOPNOTSUPP;
7918 goto out_err;
7919 }
7920
7921 while (1) {
7922 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7923 if (res == -ENOENT)
7924 break;
7925 if (res)
7926 goto out_err;
7927
7928 /* don't send disabled channels, but do send non-channel data */
7929 if (survey.channel &&
7930 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7931 survey_idx++;
7932 continue;
7933 }
7934
7935 if (nl80211_send_survey(skb,
7936 NETLINK_CB(cb->skb).portid,
7937 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7938 wdev->netdev, radio_stats, &survey) < 0)
7939 goto out;
7940 survey_idx++;
7941 }
7942
7943 out:
7944 cb->args[2] = survey_idx;
7945 res = skb->len;
7946 out_err:
7947 rtnl_unlock();
7948 return res;
7949 }
7950
7951 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7952 {
7953 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7954 NL80211_WPA_VERSION_2));
7955 }
7956
7957 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7958 {
7959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7960 struct net_device *dev = info->user_ptr[1];
7961 struct ieee80211_channel *chan;
7962 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7963 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7964 enum nl80211_auth_type auth_type;
7965 struct key_parse key;
7966 bool local_state_change;
7967
7968 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7969 return -EINVAL;
7970
7971 if (!info->attrs[NL80211_ATTR_MAC])
7972 return -EINVAL;
7973
7974 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7975 return -EINVAL;
7976
7977 if (!info->attrs[NL80211_ATTR_SSID])
7978 return -EINVAL;
7979
7980 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7981 return -EINVAL;
7982
7983 err = nl80211_parse_key(info, &key);
7984 if (err)
7985 return err;
7986
7987 if (key.idx >= 0) {
7988 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7989 return -EINVAL;
7990 if (!key.p.key || !key.p.key_len)
7991 return -EINVAL;
7992 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7993 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7994 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7995 key.p.key_len != WLAN_KEY_LEN_WEP104))
7996 return -EINVAL;
7997 if (key.idx > 3)
7998 return -EINVAL;
7999 } else {
8000 key.p.key_len = 0;
8001 key.p.key = NULL;
8002 }
8003
8004 if (key.idx >= 0) {
8005 int i;
8006 bool ok = false;
8007
8008 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8009 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8010 ok = true;
8011 break;
8012 }
8013 }
8014 if (!ok)
8015 return -EINVAL;
8016 }
8017
8018 if (!rdev->ops->auth)
8019 return -EOPNOTSUPP;
8020
8021 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8022 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8023 return -EOPNOTSUPP;
8024
8025 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8026 chan = nl80211_get_valid_chan(&rdev->wiphy,
8027 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8028 if (!chan)
8029 return -EINVAL;
8030
8031 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8032 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8033
8034 if (info->attrs[NL80211_ATTR_IE]) {
8035 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8036 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8037 }
8038
8039 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8040 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8041 return -EINVAL;
8042
8043 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8044 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8045 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8046 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8047 !info->attrs[NL80211_ATTR_AUTH_DATA])
8048 return -EINVAL;
8049
8050 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8051 if (auth_type != NL80211_AUTHTYPE_SAE &&
8052 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8053 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8054 auth_type != NL80211_AUTHTYPE_FILS_PK)
8055 return -EINVAL;
8056 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8057 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8058 /* need to include at least Auth Transaction and Status Code */
8059 if (auth_data_len < 4)
8060 return -EINVAL;
8061 }
8062
8063 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8064
8065 /*
8066 * Since we no longer track auth state, ignore
8067 * requests to only change local state.
8068 */
8069 if (local_state_change)
8070 return 0;
8071
8072 wdev_lock(dev->ieee80211_ptr);
8073 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8074 ssid, ssid_len, ie, ie_len,
8075 key.p.key, key.p.key_len, key.idx,
8076 auth_data, auth_data_len);
8077 wdev_unlock(dev->ieee80211_ptr);
8078 return err;
8079 }
8080
8081 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8082 struct genl_info *info,
8083 struct cfg80211_crypto_settings *settings,
8084 int cipher_limit)
8085 {
8086 memset(settings, 0, sizeof(*settings));
8087
8088 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8089
8090 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8091 u16 proto;
8092
8093 proto = nla_get_u16(
8094 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8095 settings->control_port_ethertype = cpu_to_be16(proto);
8096 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8097 proto != ETH_P_PAE)
8098 return -EINVAL;
8099 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8100 settings->control_port_no_encrypt = true;
8101 } else
8102 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8103
8104 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8105 void *data;
8106 int len, i;
8107
8108 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8109 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8110 settings->n_ciphers_pairwise = len / sizeof(u32);
8111
8112 if (len % sizeof(u32))
8113 return -EINVAL;
8114
8115 if (settings->n_ciphers_pairwise > cipher_limit)
8116 return -EINVAL;
8117
8118 memcpy(settings->ciphers_pairwise, data, len);
8119
8120 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8121 if (!cfg80211_supported_cipher_suite(
8122 &rdev->wiphy,
8123 settings->ciphers_pairwise[i]))
8124 return -EINVAL;
8125 }
8126
8127 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8128 settings->cipher_group =
8129 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8130 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8131 settings->cipher_group))
8132 return -EINVAL;
8133 }
8134
8135 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8136 settings->wpa_versions =
8137 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8138 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8139 return -EINVAL;
8140 }
8141
8142 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8143 void *data;
8144 int len;
8145
8146 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8147 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8148 settings->n_akm_suites = len / sizeof(u32);
8149
8150 if (len % sizeof(u32))
8151 return -EINVAL;
8152
8153 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8154 return -EINVAL;
8155
8156 memcpy(settings->akm_suites, data, len);
8157 }
8158
8159 return 0;
8160 }
8161
8162 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8163 {
8164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8165 struct net_device *dev = info->user_ptr[1];
8166 struct ieee80211_channel *chan;
8167 struct cfg80211_assoc_request req = {};
8168 const u8 *bssid, *ssid;
8169 int err, ssid_len = 0;
8170
8171 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8172 return -EINVAL;
8173
8174 if (!info->attrs[NL80211_ATTR_MAC] ||
8175 !info->attrs[NL80211_ATTR_SSID] ||
8176 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8177 return -EINVAL;
8178
8179 if (!rdev->ops->assoc)
8180 return -EOPNOTSUPP;
8181
8182 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8183 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8184 return -EOPNOTSUPP;
8185
8186 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8187
8188 chan = nl80211_get_valid_chan(&rdev->wiphy,
8189 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8190 if (!chan)
8191 return -EINVAL;
8192
8193 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8194 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8195
8196 if (info->attrs[NL80211_ATTR_IE]) {
8197 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8198 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8199 }
8200
8201 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8202 enum nl80211_mfp mfp =
8203 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8204 if (mfp == NL80211_MFP_REQUIRED)
8205 req.use_mfp = true;
8206 else if (mfp != NL80211_MFP_NO)
8207 return -EINVAL;
8208 }
8209
8210 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8211 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8212
8213 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8214 req.flags |= ASSOC_REQ_DISABLE_HT;
8215
8216 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8217 memcpy(&req.ht_capa_mask,
8218 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8219 sizeof(req.ht_capa_mask));
8220
8221 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8222 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8223 return -EINVAL;
8224 memcpy(&req.ht_capa,
8225 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8226 sizeof(req.ht_capa));
8227 }
8228
8229 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8230 req.flags |= ASSOC_REQ_DISABLE_VHT;
8231
8232 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8233 memcpy(&req.vht_capa_mask,
8234 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8235 sizeof(req.vht_capa_mask));
8236
8237 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8238 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8239 return -EINVAL;
8240 memcpy(&req.vht_capa,
8241 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8242 sizeof(req.vht_capa));
8243 }
8244
8245 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8246 if (!((rdev->wiphy.features &
8247 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8248 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8249 !wiphy_ext_feature_isset(&rdev->wiphy,
8250 NL80211_EXT_FEATURE_RRM))
8251 return -EINVAL;
8252 req.flags |= ASSOC_REQ_USE_RRM;
8253 }
8254
8255 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8256 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8257 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8258 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8259 return -EINVAL;
8260 req.fils_nonces =
8261 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8262 }
8263
8264 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8265 if (!err) {
8266 wdev_lock(dev->ieee80211_ptr);
8267
8268 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8269 ssid, ssid_len, &req);
8270
8271 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8272 dev->ieee80211_ptr->conn_owner_nlportid =
8273 info->snd_portid;
8274 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8275 bssid, ETH_ALEN);
8276 }
8277
8278 wdev_unlock(dev->ieee80211_ptr);
8279 }
8280
8281 return err;
8282 }
8283
8284 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8285 {
8286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8287 struct net_device *dev = info->user_ptr[1];
8288 const u8 *ie = NULL, *bssid;
8289 int ie_len = 0, err;
8290 u16 reason_code;
8291 bool local_state_change;
8292
8293 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8294 return -EINVAL;
8295
8296 if (!info->attrs[NL80211_ATTR_MAC])
8297 return -EINVAL;
8298
8299 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8300 return -EINVAL;
8301
8302 if (!rdev->ops->deauth)
8303 return -EOPNOTSUPP;
8304
8305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8306 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8307 return -EOPNOTSUPP;
8308
8309 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8310
8311 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8312 if (reason_code == 0) {
8313 /* Reason Code 0 is reserved */
8314 return -EINVAL;
8315 }
8316
8317 if (info->attrs[NL80211_ATTR_IE]) {
8318 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8319 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8320 }
8321
8322 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8323
8324 wdev_lock(dev->ieee80211_ptr);
8325 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8326 local_state_change);
8327 wdev_unlock(dev->ieee80211_ptr);
8328 return err;
8329 }
8330
8331 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8332 {
8333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8334 struct net_device *dev = info->user_ptr[1];
8335 const u8 *ie = NULL, *bssid;
8336 int ie_len = 0, err;
8337 u16 reason_code;
8338 bool local_state_change;
8339
8340 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8341 return -EINVAL;
8342
8343 if (!info->attrs[NL80211_ATTR_MAC])
8344 return -EINVAL;
8345
8346 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8347 return -EINVAL;
8348
8349 if (!rdev->ops->disassoc)
8350 return -EOPNOTSUPP;
8351
8352 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8353 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8354 return -EOPNOTSUPP;
8355
8356 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8357
8358 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8359 if (reason_code == 0) {
8360 /* Reason Code 0 is reserved */
8361 return -EINVAL;
8362 }
8363
8364 if (info->attrs[NL80211_ATTR_IE]) {
8365 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8366 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8367 }
8368
8369 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8370
8371 wdev_lock(dev->ieee80211_ptr);
8372 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8373 local_state_change);
8374 wdev_unlock(dev->ieee80211_ptr);
8375 return err;
8376 }
8377
8378 static bool
8379 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8380 int mcast_rate[NUM_NL80211_BANDS],
8381 int rateval)
8382 {
8383 struct wiphy *wiphy = &rdev->wiphy;
8384 bool found = false;
8385 int band, i;
8386
8387 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8388 struct ieee80211_supported_band *sband;
8389
8390 sband = wiphy->bands[band];
8391 if (!sband)
8392 continue;
8393
8394 for (i = 0; i < sband->n_bitrates; i++) {
8395 if (sband->bitrates[i].bitrate == rateval) {
8396 mcast_rate[band] = i + 1;
8397 found = true;
8398 break;
8399 }
8400 }
8401 }
8402
8403 return found;
8404 }
8405
8406 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8407 {
8408 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8409 struct net_device *dev = info->user_ptr[1];
8410 struct cfg80211_ibss_params ibss;
8411 struct wiphy *wiphy;
8412 struct cfg80211_cached_keys *connkeys = NULL;
8413 int err;
8414
8415 memset(&ibss, 0, sizeof(ibss));
8416
8417 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8418 return -EINVAL;
8419
8420 if (!info->attrs[NL80211_ATTR_SSID] ||
8421 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8422 return -EINVAL;
8423
8424 ibss.beacon_interval = 100;
8425
8426 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8427 ibss.beacon_interval =
8428 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8429
8430 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8431 ibss.beacon_interval);
8432 if (err)
8433 return err;
8434
8435 if (!rdev->ops->join_ibss)
8436 return -EOPNOTSUPP;
8437
8438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8439 return -EOPNOTSUPP;
8440
8441 wiphy = &rdev->wiphy;
8442
8443 if (info->attrs[NL80211_ATTR_MAC]) {
8444 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8445
8446 if (!is_valid_ether_addr(ibss.bssid))
8447 return -EINVAL;
8448 }
8449 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8450 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8451
8452 if (info->attrs[NL80211_ATTR_IE]) {
8453 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8454 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8455 }
8456
8457 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8458 if (err)
8459 return err;
8460
8461 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8462 NL80211_IFTYPE_ADHOC))
8463 return -EINVAL;
8464
8465 switch (ibss.chandef.width) {
8466 case NL80211_CHAN_WIDTH_5:
8467 case NL80211_CHAN_WIDTH_10:
8468 case NL80211_CHAN_WIDTH_20_NOHT:
8469 break;
8470 case NL80211_CHAN_WIDTH_20:
8471 case NL80211_CHAN_WIDTH_40:
8472 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8473 return -EINVAL;
8474 break;
8475 case NL80211_CHAN_WIDTH_80:
8476 case NL80211_CHAN_WIDTH_80P80:
8477 case NL80211_CHAN_WIDTH_160:
8478 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8479 return -EINVAL;
8480 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8481 NL80211_EXT_FEATURE_VHT_IBSS))
8482 return -EINVAL;
8483 break;
8484 default:
8485 return -EINVAL;
8486 }
8487
8488 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8489 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8490
8491 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8492 u8 *rates =
8493 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8494 int n_rates =
8495 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8496 struct ieee80211_supported_band *sband =
8497 wiphy->bands[ibss.chandef.chan->band];
8498
8499 err = ieee80211_get_ratemask(sband, rates, n_rates,
8500 &ibss.basic_rates);
8501 if (err)
8502 return err;
8503 }
8504
8505 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8506 memcpy(&ibss.ht_capa_mask,
8507 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8508 sizeof(ibss.ht_capa_mask));
8509
8510 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8511 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8512 return -EINVAL;
8513 memcpy(&ibss.ht_capa,
8514 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8515 sizeof(ibss.ht_capa));
8516 }
8517
8518 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8519 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8520 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8521 return -EINVAL;
8522
8523 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8524 bool no_ht = false;
8525
8526 connkeys = nl80211_parse_connkeys(rdev,
8527 info->attrs[NL80211_ATTR_KEYS],
8528 &no_ht);
8529 if (IS_ERR(connkeys))
8530 return PTR_ERR(connkeys);
8531
8532 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8533 no_ht) {
8534 kzfree(connkeys);
8535 return -EINVAL;
8536 }
8537 }
8538
8539 ibss.control_port =
8540 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8541
8542 ibss.userspace_handles_dfs =
8543 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8544
8545 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8546 if (err)
8547 kzfree(connkeys);
8548 return err;
8549 }
8550
8551 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8552 {
8553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8554 struct net_device *dev = info->user_ptr[1];
8555
8556 if (!rdev->ops->leave_ibss)
8557 return -EOPNOTSUPP;
8558
8559 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8560 return -EOPNOTSUPP;
8561
8562 return cfg80211_leave_ibss(rdev, dev, false);
8563 }
8564
8565 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8566 {
8567 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8568 struct net_device *dev = info->user_ptr[1];
8569 int mcast_rate[NUM_NL80211_BANDS];
8570 u32 nla_rate;
8571 int err;
8572
8573 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8574 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8575 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8576 return -EOPNOTSUPP;
8577
8578 if (!rdev->ops->set_mcast_rate)
8579 return -EOPNOTSUPP;
8580
8581 memset(mcast_rate, 0, sizeof(mcast_rate));
8582
8583 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8584 return -EINVAL;
8585
8586 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8587 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8588 return -EINVAL;
8589
8590 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8591
8592 return err;
8593 }
8594
8595 static struct sk_buff *
8596 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8597 struct wireless_dev *wdev, int approxlen,
8598 u32 portid, u32 seq, enum nl80211_commands cmd,
8599 enum nl80211_attrs attr,
8600 const struct nl80211_vendor_cmd_info *info,
8601 gfp_t gfp)
8602 {
8603 struct sk_buff *skb;
8604 void *hdr;
8605 struct nlattr *data;
8606
8607 skb = nlmsg_new(approxlen + 100, gfp);
8608 if (!skb)
8609 return NULL;
8610
8611 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8612 if (!hdr) {
8613 kfree_skb(skb);
8614 return NULL;
8615 }
8616
8617 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8618 goto nla_put_failure;
8619
8620 if (info) {
8621 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8622 info->vendor_id))
8623 goto nla_put_failure;
8624 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8625 info->subcmd))
8626 goto nla_put_failure;
8627 }
8628
8629 if (wdev) {
8630 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8631 wdev_id(wdev), NL80211_ATTR_PAD))
8632 goto nla_put_failure;
8633 if (wdev->netdev &&
8634 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8635 wdev->netdev->ifindex))
8636 goto nla_put_failure;
8637 }
8638
8639 data = nla_nest_start(skb, attr);
8640 if (!data)
8641 goto nla_put_failure;
8642
8643 ((void **)skb->cb)[0] = rdev;
8644 ((void **)skb->cb)[1] = hdr;
8645 ((void **)skb->cb)[2] = data;
8646
8647 return skb;
8648
8649 nla_put_failure:
8650 kfree_skb(skb);
8651 return NULL;
8652 }
8653
8654 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8655 struct wireless_dev *wdev,
8656 enum nl80211_commands cmd,
8657 enum nl80211_attrs attr,
8658 int vendor_event_idx,
8659 int approxlen, gfp_t gfp)
8660 {
8661 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8662 const struct nl80211_vendor_cmd_info *info;
8663
8664 switch (cmd) {
8665 case NL80211_CMD_TESTMODE:
8666 if (WARN_ON(vendor_event_idx != -1))
8667 return NULL;
8668 info = NULL;
8669 break;
8670 case NL80211_CMD_VENDOR:
8671 if (WARN_ON(vendor_event_idx < 0 ||
8672 vendor_event_idx >= wiphy->n_vendor_events))
8673 return NULL;
8674 info = &wiphy->vendor_events[vendor_event_idx];
8675 break;
8676 default:
8677 WARN_ON(1);
8678 return NULL;
8679 }
8680
8681 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8682 cmd, attr, info, gfp);
8683 }
8684 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8685
8686 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8687 {
8688 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8689 void *hdr = ((void **)skb->cb)[1];
8690 struct nlattr *data = ((void **)skb->cb)[2];
8691 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8692
8693 /* clear CB data for netlink core to own from now on */
8694 memset(skb->cb, 0, sizeof(skb->cb));
8695
8696 nla_nest_end(skb, data);
8697 genlmsg_end(skb, hdr);
8698
8699 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8700 mcgrp = NL80211_MCGRP_VENDOR;
8701
8702 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8703 mcgrp, gfp);
8704 }
8705 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8706
8707 #ifdef CONFIG_NL80211_TESTMODE
8708 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8709 {
8710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8711 struct wireless_dev *wdev =
8712 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8713 int err;
8714
8715 if (!rdev->ops->testmode_cmd)
8716 return -EOPNOTSUPP;
8717
8718 if (IS_ERR(wdev)) {
8719 err = PTR_ERR(wdev);
8720 if (err != -EINVAL)
8721 return err;
8722 wdev = NULL;
8723 } else if (wdev->wiphy != &rdev->wiphy) {
8724 return -EINVAL;
8725 }
8726
8727 if (!info->attrs[NL80211_ATTR_TESTDATA])
8728 return -EINVAL;
8729
8730 rdev->cur_cmd_info = info;
8731 err = rdev_testmode_cmd(rdev, wdev,
8732 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8733 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8734 rdev->cur_cmd_info = NULL;
8735
8736 return err;
8737 }
8738
8739 static int nl80211_testmode_dump(struct sk_buff *skb,
8740 struct netlink_callback *cb)
8741 {
8742 struct cfg80211_registered_device *rdev;
8743 int err;
8744 long phy_idx;
8745 void *data = NULL;
8746 int data_len = 0;
8747
8748 rtnl_lock();
8749
8750 if (cb->args[0]) {
8751 /*
8752 * 0 is a valid index, but not valid for args[0],
8753 * so we need to offset by 1.
8754 */
8755 phy_idx = cb->args[0] - 1;
8756
8757 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8758 if (!rdev) {
8759 err = -ENOENT;
8760 goto out_err;
8761 }
8762 } else {
8763 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8764
8765 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8766 attrbuf, nl80211_fam.maxattr,
8767 nl80211_policy, NULL);
8768 if (err)
8769 goto out_err;
8770
8771 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8772 if (IS_ERR(rdev)) {
8773 err = PTR_ERR(rdev);
8774 goto out_err;
8775 }
8776 phy_idx = rdev->wiphy_idx;
8777
8778 if (attrbuf[NL80211_ATTR_TESTDATA])
8779 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8780 }
8781
8782 if (cb->args[1]) {
8783 data = nla_data((void *)cb->args[1]);
8784 data_len = nla_len((void *)cb->args[1]);
8785 }
8786
8787 if (!rdev->ops->testmode_dump) {
8788 err = -EOPNOTSUPP;
8789 goto out_err;
8790 }
8791
8792 while (1) {
8793 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8794 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8795 NL80211_CMD_TESTMODE);
8796 struct nlattr *tmdata;
8797
8798 if (!hdr)
8799 break;
8800
8801 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8802 genlmsg_cancel(skb, hdr);
8803 break;
8804 }
8805
8806 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8807 if (!tmdata) {
8808 genlmsg_cancel(skb, hdr);
8809 break;
8810 }
8811 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8812 nla_nest_end(skb, tmdata);
8813
8814 if (err == -ENOBUFS || err == -ENOENT) {
8815 genlmsg_cancel(skb, hdr);
8816 break;
8817 } else if (err) {
8818 genlmsg_cancel(skb, hdr);
8819 goto out_err;
8820 }
8821
8822 genlmsg_end(skb, hdr);
8823 }
8824
8825 err = skb->len;
8826 /* see above */
8827 cb->args[0] = phy_idx + 1;
8828 out_err:
8829 rtnl_unlock();
8830 return err;
8831 }
8832 #endif
8833
8834 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8835 {
8836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8837 struct net_device *dev = info->user_ptr[1];
8838 struct cfg80211_connect_params connect;
8839 struct wiphy *wiphy;
8840 struct cfg80211_cached_keys *connkeys = NULL;
8841 int err;
8842
8843 memset(&connect, 0, sizeof(connect));
8844
8845 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8846 return -EINVAL;
8847
8848 if (!info->attrs[NL80211_ATTR_SSID] ||
8849 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8850 return -EINVAL;
8851
8852 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8853 connect.auth_type =
8854 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8855 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8856 NL80211_CMD_CONNECT))
8857 return -EINVAL;
8858 } else
8859 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8860
8861 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8862
8863 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8864 NL80211_MAX_NR_CIPHER_SUITES);
8865 if (err)
8866 return err;
8867
8868 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8869 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8870 return -EOPNOTSUPP;
8871
8872 wiphy = &rdev->wiphy;
8873
8874 connect.bg_scan_period = -1;
8875 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8876 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8877 connect.bg_scan_period =
8878 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8879 }
8880
8881 if (info->attrs[NL80211_ATTR_MAC])
8882 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8883 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8884 connect.bssid_hint =
8885 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8886 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8887 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8888
8889 if (info->attrs[NL80211_ATTR_IE]) {
8890 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8891 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8892 }
8893
8894 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8895 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8896 if (connect.mfp != NL80211_MFP_REQUIRED &&
8897 connect.mfp != NL80211_MFP_NO)
8898 return -EINVAL;
8899 } else {
8900 connect.mfp = NL80211_MFP_NO;
8901 }
8902
8903 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8904 connect.prev_bssid =
8905 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8906
8907 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8908 connect.channel = nl80211_get_valid_chan(
8909 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8910 if (!connect.channel)
8911 return -EINVAL;
8912 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8913 connect.channel_hint = nl80211_get_valid_chan(
8914 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8915 if (!connect.channel_hint)
8916 return -EINVAL;
8917 }
8918
8919 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8920 connkeys = nl80211_parse_connkeys(rdev,
8921 info->attrs[NL80211_ATTR_KEYS], NULL);
8922 if (IS_ERR(connkeys))
8923 return PTR_ERR(connkeys);
8924 }
8925
8926 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8927 connect.flags |= ASSOC_REQ_DISABLE_HT;
8928
8929 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8930 memcpy(&connect.ht_capa_mask,
8931 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8932 sizeof(connect.ht_capa_mask));
8933
8934 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8935 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8936 kzfree(connkeys);
8937 return -EINVAL;
8938 }
8939 memcpy(&connect.ht_capa,
8940 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8941 sizeof(connect.ht_capa));
8942 }
8943
8944 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8945 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8946
8947 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8948 memcpy(&connect.vht_capa_mask,
8949 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8950 sizeof(connect.vht_capa_mask));
8951
8952 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8953 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8954 kzfree(connkeys);
8955 return -EINVAL;
8956 }
8957 memcpy(&connect.vht_capa,
8958 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8959 sizeof(connect.vht_capa));
8960 }
8961
8962 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8963 if (!((rdev->wiphy.features &
8964 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8965 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8966 !wiphy_ext_feature_isset(&rdev->wiphy,
8967 NL80211_EXT_FEATURE_RRM)) {
8968 kzfree(connkeys);
8969 return -EINVAL;
8970 }
8971 connect.flags |= ASSOC_REQ_USE_RRM;
8972 }
8973
8974 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8975 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8976 kzfree(connkeys);
8977 return -EOPNOTSUPP;
8978 }
8979
8980 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8981 /* bss selection makes no sense if bssid is set */
8982 if (connect.bssid) {
8983 kzfree(connkeys);
8984 return -EINVAL;
8985 }
8986
8987 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8988 wiphy, &connect.bss_select);
8989 if (err) {
8990 kzfree(connkeys);
8991 return err;
8992 }
8993 }
8994
8995 if (wiphy_ext_feature_isset(&rdev->wiphy,
8996 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
8997 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
8998 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
8999 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9000 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9001 connect.fils_erp_username =
9002 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9003 connect.fils_erp_username_len =
9004 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9005 connect.fils_erp_realm =
9006 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9007 connect.fils_erp_realm_len =
9008 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9009 connect.fils_erp_next_seq_num =
9010 nla_get_u16(
9011 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9012 connect.fils_erp_rrk =
9013 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9014 connect.fils_erp_rrk_len =
9015 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9016 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9017 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9018 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9019 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9020 kzfree(connkeys);
9021 return -EINVAL;
9022 }
9023
9024 wdev_lock(dev->ieee80211_ptr);
9025
9026 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9027 connect.prev_bssid);
9028 if (err)
9029 kzfree(connkeys);
9030
9031 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9032 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9033 if (connect.bssid)
9034 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9035 connect.bssid, ETH_ALEN);
9036 else
9037 memset(dev->ieee80211_ptr->disconnect_bssid,
9038 0, ETH_ALEN);
9039 }
9040
9041 wdev_unlock(dev->ieee80211_ptr);
9042
9043 return err;
9044 }
9045
9046 static int nl80211_update_connect_params(struct sk_buff *skb,
9047 struct genl_info *info)
9048 {
9049 struct cfg80211_connect_params connect = {};
9050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9051 struct net_device *dev = info->user_ptr[1];
9052 struct wireless_dev *wdev = dev->ieee80211_ptr;
9053 u32 changed = 0;
9054 int ret;
9055
9056 if (!rdev->ops->update_connect_params)
9057 return -EOPNOTSUPP;
9058
9059 if (info->attrs[NL80211_ATTR_IE]) {
9060 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9061 return -EINVAL;
9062 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9063 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9064 changed |= UPDATE_ASSOC_IES;
9065 }
9066
9067 wdev_lock(dev->ieee80211_ptr);
9068 if (!wdev->current_bss)
9069 ret = -ENOLINK;
9070 else
9071 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9072 wdev_unlock(dev->ieee80211_ptr);
9073
9074 return ret;
9075 }
9076
9077 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9078 {
9079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9080 struct net_device *dev = info->user_ptr[1];
9081 u16 reason;
9082 int ret;
9083
9084 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9085 reason = WLAN_REASON_DEAUTH_LEAVING;
9086 else
9087 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9088
9089 if (reason == 0)
9090 return -EINVAL;
9091
9092 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9093 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9094 return -EOPNOTSUPP;
9095
9096 wdev_lock(dev->ieee80211_ptr);
9097 ret = cfg80211_disconnect(rdev, dev, reason, true);
9098 wdev_unlock(dev->ieee80211_ptr);
9099 return ret;
9100 }
9101
9102 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9103 {
9104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9105 struct net *net;
9106 int err;
9107
9108 if (info->attrs[NL80211_ATTR_PID]) {
9109 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9110
9111 net = get_net_ns_by_pid(pid);
9112 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9113 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9114
9115 net = get_net_ns_by_fd(fd);
9116 } else {
9117 return -EINVAL;
9118 }
9119
9120 if (IS_ERR(net))
9121 return PTR_ERR(net);
9122
9123 err = 0;
9124
9125 /* check if anything to do */
9126 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9127 err = cfg80211_switch_netns(rdev, net);
9128
9129 put_net(net);
9130 return err;
9131 }
9132
9133 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9134 {
9135 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9136 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9137 struct cfg80211_pmksa *pmksa) = NULL;
9138 struct net_device *dev = info->user_ptr[1];
9139 struct cfg80211_pmksa pmksa;
9140
9141 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9142
9143 if (!info->attrs[NL80211_ATTR_PMKID])
9144 return -EINVAL;
9145
9146 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9147
9148 if (info->attrs[NL80211_ATTR_MAC]) {
9149 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9150 } else if (info->attrs[NL80211_ATTR_SSID] &&
9151 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9152 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9153 info->attrs[NL80211_ATTR_PMK])) {
9154 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9155 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9156 pmksa.cache_id =
9157 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9158 } else {
9159 return -EINVAL;
9160 }
9161 if (info->attrs[NL80211_ATTR_PMK]) {
9162 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9163 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9164 }
9165
9166 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9167 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9168 return -EOPNOTSUPP;
9169
9170 switch (info->genlhdr->cmd) {
9171 case NL80211_CMD_SET_PMKSA:
9172 rdev_ops = rdev->ops->set_pmksa;
9173 break;
9174 case NL80211_CMD_DEL_PMKSA:
9175 rdev_ops = rdev->ops->del_pmksa;
9176 break;
9177 default:
9178 WARN_ON(1);
9179 break;
9180 }
9181
9182 if (!rdev_ops)
9183 return -EOPNOTSUPP;
9184
9185 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9186 }
9187
9188 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9189 {
9190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9191 struct net_device *dev = info->user_ptr[1];
9192
9193 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9194 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9195 return -EOPNOTSUPP;
9196
9197 if (!rdev->ops->flush_pmksa)
9198 return -EOPNOTSUPP;
9199
9200 return rdev_flush_pmksa(rdev, dev);
9201 }
9202
9203 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9204 {
9205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9206 struct net_device *dev = info->user_ptr[1];
9207 u8 action_code, dialog_token;
9208 u32 peer_capability = 0;
9209 u16 status_code;
9210 u8 *peer;
9211 bool initiator;
9212
9213 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9214 !rdev->ops->tdls_mgmt)
9215 return -EOPNOTSUPP;
9216
9217 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9218 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9219 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9220 !info->attrs[NL80211_ATTR_IE] ||
9221 !info->attrs[NL80211_ATTR_MAC])
9222 return -EINVAL;
9223
9224 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9225 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9226 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9227 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9228 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9229 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9230 peer_capability =
9231 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9232
9233 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9234 dialog_token, status_code, peer_capability,
9235 initiator,
9236 nla_data(info->attrs[NL80211_ATTR_IE]),
9237 nla_len(info->attrs[NL80211_ATTR_IE]));
9238 }
9239
9240 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9241 {
9242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9243 struct net_device *dev = info->user_ptr[1];
9244 enum nl80211_tdls_operation operation;
9245 u8 *peer;
9246
9247 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9248 !rdev->ops->tdls_oper)
9249 return -EOPNOTSUPP;
9250
9251 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9252 !info->attrs[NL80211_ATTR_MAC])
9253 return -EINVAL;
9254
9255 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9256 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9257
9258 return rdev_tdls_oper(rdev, dev, peer, operation);
9259 }
9260
9261 static int nl80211_remain_on_channel(struct sk_buff *skb,
9262 struct genl_info *info)
9263 {
9264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9265 struct wireless_dev *wdev = info->user_ptr[1];
9266 struct cfg80211_chan_def chandef;
9267 const struct cfg80211_chan_def *compat_chandef;
9268 struct sk_buff *msg;
9269 void *hdr;
9270 u64 cookie;
9271 u32 duration;
9272 int err;
9273
9274 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9275 !info->attrs[NL80211_ATTR_DURATION])
9276 return -EINVAL;
9277
9278 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9279
9280 if (!rdev->ops->remain_on_channel ||
9281 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9282 return -EOPNOTSUPP;
9283
9284 /*
9285 * We should be on that channel for at least a minimum amount of
9286 * time (10ms) but no longer than the driver supports.
9287 */
9288 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9289 duration > rdev->wiphy.max_remain_on_channel_duration)
9290 return -EINVAL;
9291
9292 err = nl80211_parse_chandef(rdev, info, &chandef);
9293 if (err)
9294 return err;
9295
9296 wdev_lock(wdev);
9297 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9298 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9299 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9300 &chandef);
9301 if (compat_chandef != &chandef) {
9302 wdev_unlock(wdev);
9303 return -EBUSY;
9304 }
9305 }
9306 wdev_unlock(wdev);
9307
9308 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9309 if (!msg)
9310 return -ENOMEM;
9311
9312 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9313 NL80211_CMD_REMAIN_ON_CHANNEL);
9314 if (!hdr) {
9315 err = -ENOBUFS;
9316 goto free_msg;
9317 }
9318
9319 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9320 duration, &cookie);
9321
9322 if (err)
9323 goto free_msg;
9324
9325 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9326 NL80211_ATTR_PAD))
9327 goto nla_put_failure;
9328
9329 genlmsg_end(msg, hdr);
9330
9331 return genlmsg_reply(msg, info);
9332
9333 nla_put_failure:
9334 err = -ENOBUFS;
9335 free_msg:
9336 nlmsg_free(msg);
9337 return err;
9338 }
9339
9340 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9341 struct genl_info *info)
9342 {
9343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9344 struct wireless_dev *wdev = info->user_ptr[1];
9345 u64 cookie;
9346
9347 if (!info->attrs[NL80211_ATTR_COOKIE])
9348 return -EINVAL;
9349
9350 if (!rdev->ops->cancel_remain_on_channel)
9351 return -EOPNOTSUPP;
9352
9353 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9354
9355 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9356 }
9357
9358 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9359 struct genl_info *info)
9360 {
9361 struct cfg80211_bitrate_mask mask;
9362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9363 struct net_device *dev = info->user_ptr[1];
9364 int err;
9365
9366 if (!rdev->ops->set_bitrate_mask)
9367 return -EOPNOTSUPP;
9368
9369 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9370 if (err)
9371 return err;
9372
9373 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9374 }
9375
9376 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9377 {
9378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9379 struct wireless_dev *wdev = info->user_ptr[1];
9380 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9381
9382 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9383 return -EINVAL;
9384
9385 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9386 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9387
9388 switch (wdev->iftype) {
9389 case NL80211_IFTYPE_STATION:
9390 case NL80211_IFTYPE_ADHOC:
9391 case NL80211_IFTYPE_P2P_CLIENT:
9392 case NL80211_IFTYPE_AP:
9393 case NL80211_IFTYPE_AP_VLAN:
9394 case NL80211_IFTYPE_MESH_POINT:
9395 case NL80211_IFTYPE_P2P_GO:
9396 case NL80211_IFTYPE_P2P_DEVICE:
9397 break;
9398 case NL80211_IFTYPE_NAN:
9399 default:
9400 return -EOPNOTSUPP;
9401 }
9402
9403 /* not much point in registering if we can't reply */
9404 if (!rdev->ops->mgmt_tx)
9405 return -EOPNOTSUPP;
9406
9407 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9408 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9409 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9410 }
9411
9412 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9413 {
9414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9415 struct wireless_dev *wdev = info->user_ptr[1];
9416 struct cfg80211_chan_def chandef;
9417 int err;
9418 void *hdr = NULL;
9419 u64 cookie;
9420 struct sk_buff *msg = NULL;
9421 struct cfg80211_mgmt_tx_params params = {
9422 .dont_wait_for_ack =
9423 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9424 };
9425
9426 if (!info->attrs[NL80211_ATTR_FRAME])
9427 return -EINVAL;
9428
9429 if (!rdev->ops->mgmt_tx)
9430 return -EOPNOTSUPP;
9431
9432 switch (wdev->iftype) {
9433 case NL80211_IFTYPE_P2P_DEVICE:
9434 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9435 return -EINVAL;
9436 case NL80211_IFTYPE_STATION:
9437 case NL80211_IFTYPE_ADHOC:
9438 case NL80211_IFTYPE_P2P_CLIENT:
9439 case NL80211_IFTYPE_AP:
9440 case NL80211_IFTYPE_AP_VLAN:
9441 case NL80211_IFTYPE_MESH_POINT:
9442 case NL80211_IFTYPE_P2P_GO:
9443 break;
9444 case NL80211_IFTYPE_NAN:
9445 default:
9446 return -EOPNOTSUPP;
9447 }
9448
9449 if (info->attrs[NL80211_ATTR_DURATION]) {
9450 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9451 return -EINVAL;
9452 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9453
9454 /*
9455 * We should wait on the channel for at least a minimum amount
9456 * of time (10ms) but no longer than the driver supports.
9457 */
9458 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9459 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9460 return -EINVAL;
9461 }
9462
9463 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9464
9465 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9466 return -EINVAL;
9467
9468 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9469
9470 /* get the channel if any has been specified, otherwise pass NULL to
9471 * the driver. The latter will use the current one
9472 */
9473 chandef.chan = NULL;
9474 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9475 err = nl80211_parse_chandef(rdev, info, &chandef);
9476 if (err)
9477 return err;
9478 }
9479
9480 if (!chandef.chan && params.offchan)
9481 return -EINVAL;
9482
9483 wdev_lock(wdev);
9484 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9485 wdev_unlock(wdev);
9486 return -EBUSY;
9487 }
9488 wdev_unlock(wdev);
9489
9490 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9491 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9492
9493 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9494 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9495 int i;
9496
9497 if (len % sizeof(u16))
9498 return -EINVAL;
9499
9500 params.n_csa_offsets = len / sizeof(u16);
9501 params.csa_offsets =
9502 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9503
9504 /* check that all the offsets fit the frame */
9505 for (i = 0; i < params.n_csa_offsets; i++) {
9506 if (params.csa_offsets[i] >= params.len)
9507 return -EINVAL;
9508 }
9509 }
9510
9511 if (!params.dont_wait_for_ack) {
9512 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9513 if (!msg)
9514 return -ENOMEM;
9515
9516 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9517 NL80211_CMD_FRAME);
9518 if (!hdr) {
9519 err = -ENOBUFS;
9520 goto free_msg;
9521 }
9522 }
9523
9524 params.chan = chandef.chan;
9525 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9526 if (err)
9527 goto free_msg;
9528
9529 if (msg) {
9530 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9531 NL80211_ATTR_PAD))
9532 goto nla_put_failure;
9533
9534 genlmsg_end(msg, hdr);
9535 return genlmsg_reply(msg, info);
9536 }
9537
9538 return 0;
9539
9540 nla_put_failure:
9541 err = -ENOBUFS;
9542 free_msg:
9543 nlmsg_free(msg);
9544 return err;
9545 }
9546
9547 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9548 {
9549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9550 struct wireless_dev *wdev = info->user_ptr[1];
9551 u64 cookie;
9552
9553 if (!info->attrs[NL80211_ATTR_COOKIE])
9554 return -EINVAL;
9555
9556 if (!rdev->ops->mgmt_tx_cancel_wait)
9557 return -EOPNOTSUPP;
9558
9559 switch (wdev->iftype) {
9560 case NL80211_IFTYPE_STATION:
9561 case NL80211_IFTYPE_ADHOC:
9562 case NL80211_IFTYPE_P2P_CLIENT:
9563 case NL80211_IFTYPE_AP:
9564 case NL80211_IFTYPE_AP_VLAN:
9565 case NL80211_IFTYPE_P2P_GO:
9566 case NL80211_IFTYPE_P2P_DEVICE:
9567 break;
9568 case NL80211_IFTYPE_NAN:
9569 default:
9570 return -EOPNOTSUPP;
9571 }
9572
9573 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9574
9575 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9576 }
9577
9578 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9579 {
9580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9581 struct wireless_dev *wdev;
9582 struct net_device *dev = info->user_ptr[1];
9583 u8 ps_state;
9584 bool state;
9585 int err;
9586
9587 if (!info->attrs[NL80211_ATTR_PS_STATE])
9588 return -EINVAL;
9589
9590 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9591
9592 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9593 return -EINVAL;
9594
9595 wdev = dev->ieee80211_ptr;
9596
9597 if (!rdev->ops->set_power_mgmt)
9598 return -EOPNOTSUPP;
9599
9600 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9601
9602 if (state == wdev->ps)
9603 return 0;
9604
9605 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9606 if (!err)
9607 wdev->ps = state;
9608 return err;
9609 }
9610
9611 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9612 {
9613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9614 enum nl80211_ps_state ps_state;
9615 struct wireless_dev *wdev;
9616 struct net_device *dev = info->user_ptr[1];
9617 struct sk_buff *msg;
9618 void *hdr;
9619 int err;
9620
9621 wdev = dev->ieee80211_ptr;
9622
9623 if (!rdev->ops->set_power_mgmt)
9624 return -EOPNOTSUPP;
9625
9626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9627 if (!msg)
9628 return -ENOMEM;
9629
9630 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9631 NL80211_CMD_GET_POWER_SAVE);
9632 if (!hdr) {
9633 err = -ENOBUFS;
9634 goto free_msg;
9635 }
9636
9637 if (wdev->ps)
9638 ps_state = NL80211_PS_ENABLED;
9639 else
9640 ps_state = NL80211_PS_DISABLED;
9641
9642 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9643 goto nla_put_failure;
9644
9645 genlmsg_end(msg, hdr);
9646 return genlmsg_reply(msg, info);
9647
9648 nla_put_failure:
9649 err = -ENOBUFS;
9650 free_msg:
9651 nlmsg_free(msg);
9652 return err;
9653 }
9654
9655 static const struct nla_policy
9656 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9657 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9658 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9659 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9660 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9661 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9662 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9663 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9664 };
9665
9666 static int nl80211_set_cqm_txe(struct genl_info *info,
9667 u32 rate, u32 pkts, u32 intvl)
9668 {
9669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9670 struct net_device *dev = info->user_ptr[1];
9671 struct wireless_dev *wdev = dev->ieee80211_ptr;
9672
9673 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9674 return -EINVAL;
9675
9676 if (!rdev->ops->set_cqm_txe_config)
9677 return -EOPNOTSUPP;
9678
9679 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9680 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9681 return -EOPNOTSUPP;
9682
9683 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9684 }
9685
9686 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9687 struct net_device *dev)
9688 {
9689 struct wireless_dev *wdev = dev->ieee80211_ptr;
9690 s32 last, low, high;
9691 u32 hyst;
9692 int i, n;
9693 int err;
9694
9695 /* RSSI reporting disabled? */
9696 if (!wdev->cqm_config)
9697 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9698
9699 /*
9700 * Obtain current RSSI value if possible, if not and no RSSI threshold
9701 * event has been received yet, we should receive an event after a
9702 * connection is established and enough beacons received to calculate
9703 * the average.
9704 */
9705 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9706 rdev->ops->get_station) {
9707 struct station_info sinfo;
9708 u8 *mac_addr;
9709
9710 mac_addr = wdev->current_bss->pub.bssid;
9711
9712 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9713 if (err)
9714 return err;
9715
9716 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9717 wdev->cqm_config->last_rssi_event_value =
9718 (s8) sinfo.rx_beacon_signal_avg;
9719 }
9720
9721 last = wdev->cqm_config->last_rssi_event_value;
9722 hyst = wdev->cqm_config->rssi_hyst;
9723 n = wdev->cqm_config->n_rssi_thresholds;
9724
9725 for (i = 0; i < n; i++)
9726 if (last < wdev->cqm_config->rssi_thresholds[i])
9727 break;
9728
9729 low = i > 0 ?
9730 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9731 high = i < n ?
9732 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9733
9734 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9735 }
9736
9737 static int nl80211_set_cqm_rssi(struct genl_info *info,
9738 const s32 *thresholds, int n_thresholds,
9739 u32 hysteresis)
9740 {
9741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9742 struct net_device *dev = info->user_ptr[1];
9743 struct wireless_dev *wdev = dev->ieee80211_ptr;
9744 int i, err;
9745 s32 prev = S32_MIN;
9746
9747 /* Check all values negative and sorted */
9748 for (i = 0; i < n_thresholds; i++) {
9749 if (thresholds[i] > 0 || thresholds[i] <= prev)
9750 return -EINVAL;
9751
9752 prev = thresholds[i];
9753 }
9754
9755 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9756 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9757 return -EOPNOTSUPP;
9758
9759 wdev_lock(wdev);
9760 cfg80211_cqm_config_free(wdev);
9761 wdev_unlock(wdev);
9762
9763 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9764 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9765 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9766
9767 return rdev_set_cqm_rssi_config(rdev, dev,
9768 thresholds[0], hysteresis);
9769 }
9770
9771 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9772 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9773 return -EOPNOTSUPP;
9774
9775 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9776 n_thresholds = 0;
9777
9778 wdev_lock(wdev);
9779 if (n_thresholds) {
9780 struct cfg80211_cqm_config *cqm_config;
9781
9782 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9783 n_thresholds * sizeof(s32), GFP_KERNEL);
9784 if (!cqm_config) {
9785 err = -ENOMEM;
9786 goto unlock;
9787 }
9788
9789 cqm_config->rssi_hyst = hysteresis;
9790 cqm_config->n_rssi_thresholds = n_thresholds;
9791 memcpy(cqm_config->rssi_thresholds, thresholds,
9792 n_thresholds * sizeof(s32));
9793
9794 wdev->cqm_config = cqm_config;
9795 }
9796
9797 err = cfg80211_cqm_rssi_update(rdev, dev);
9798
9799 unlock:
9800 wdev_unlock(wdev);
9801
9802 return err;
9803 }
9804
9805 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9806 {
9807 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9808 struct nlattr *cqm;
9809 int err;
9810
9811 cqm = info->attrs[NL80211_ATTR_CQM];
9812 if (!cqm)
9813 return -EINVAL;
9814
9815 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9816 nl80211_attr_cqm_policy, info->extack);
9817 if (err)
9818 return err;
9819
9820 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9821 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9822 const s32 *thresholds =
9823 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9824 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9825 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9826
9827 if (len % 4)
9828 return -EINVAL;
9829
9830 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9831 hysteresis);
9832 }
9833
9834 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9835 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9836 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9837 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9838 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9839 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9840
9841 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9842 }
9843
9844 return -EINVAL;
9845 }
9846
9847 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9848 {
9849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9850 struct net_device *dev = info->user_ptr[1];
9851 struct ocb_setup setup = {};
9852 int err;
9853
9854 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9855 if (err)
9856 return err;
9857
9858 return cfg80211_join_ocb(rdev, dev, &setup);
9859 }
9860
9861 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9862 {
9863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9864 struct net_device *dev = info->user_ptr[1];
9865
9866 return cfg80211_leave_ocb(rdev, dev);
9867 }
9868
9869 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9870 {
9871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9872 struct net_device *dev = info->user_ptr[1];
9873 struct mesh_config cfg;
9874 struct mesh_setup setup;
9875 int err;
9876
9877 /* start with default */
9878 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9879 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9880
9881 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9882 /* and parse parameters if given */
9883 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9884 if (err)
9885 return err;
9886 }
9887
9888 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9889 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9890 return -EINVAL;
9891
9892 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9893 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9894
9895 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9896 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9897 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9898 return -EINVAL;
9899
9900 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9901 setup.beacon_interval =
9902 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9903
9904 err = cfg80211_validate_beacon_int(rdev,
9905 NL80211_IFTYPE_MESH_POINT,
9906 setup.beacon_interval);
9907 if (err)
9908 return err;
9909 }
9910
9911 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9912 setup.dtim_period =
9913 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9914 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9915 return -EINVAL;
9916 }
9917
9918 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9919 /* parse additional setup parameters if given */
9920 err = nl80211_parse_mesh_setup(info, &setup);
9921 if (err)
9922 return err;
9923 }
9924
9925 if (setup.user_mpm)
9926 cfg.auto_open_plinks = false;
9927
9928 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9929 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9930 if (err)
9931 return err;
9932 } else {
9933 /* cfg80211_join_mesh() will sort it out */
9934 setup.chandef.chan = NULL;
9935 }
9936
9937 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9938 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9939 int n_rates =
9940 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9941 struct ieee80211_supported_band *sband;
9942
9943 if (!setup.chandef.chan)
9944 return -EINVAL;
9945
9946 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9947
9948 err = ieee80211_get_ratemask(sband, rates, n_rates,
9949 &setup.basic_rates);
9950 if (err)
9951 return err;
9952 }
9953
9954 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9955 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9956 if (err)
9957 return err;
9958
9959 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9960 &setup.beacon_rate);
9961 if (err)
9962 return err;
9963 }
9964
9965 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9966 }
9967
9968 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9969 {
9970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9971 struct net_device *dev = info->user_ptr[1];
9972
9973 return cfg80211_leave_mesh(rdev, dev);
9974 }
9975
9976 #ifdef CONFIG_PM
9977 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9978 struct cfg80211_registered_device *rdev)
9979 {
9980 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9981 struct nlattr *nl_pats, *nl_pat;
9982 int i, pat_len;
9983
9984 if (!wowlan->n_patterns)
9985 return 0;
9986
9987 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9988 if (!nl_pats)
9989 return -ENOBUFS;
9990
9991 for (i = 0; i < wowlan->n_patterns; i++) {
9992 nl_pat = nla_nest_start(msg, i + 1);
9993 if (!nl_pat)
9994 return -ENOBUFS;
9995 pat_len = wowlan->patterns[i].pattern_len;
9996 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9997 wowlan->patterns[i].mask) ||
9998 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9999 wowlan->patterns[i].pattern) ||
10000 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10001 wowlan->patterns[i].pkt_offset))
10002 return -ENOBUFS;
10003 nla_nest_end(msg, nl_pat);
10004 }
10005 nla_nest_end(msg, nl_pats);
10006
10007 return 0;
10008 }
10009
10010 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10011 struct cfg80211_wowlan_tcp *tcp)
10012 {
10013 struct nlattr *nl_tcp;
10014
10015 if (!tcp)
10016 return 0;
10017
10018 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10019 if (!nl_tcp)
10020 return -ENOBUFS;
10021
10022 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10023 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10024 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10025 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10026 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10027 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10028 tcp->payload_len, tcp->payload) ||
10029 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10030 tcp->data_interval) ||
10031 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10032 tcp->wake_len, tcp->wake_data) ||
10033 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10034 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10035 return -ENOBUFS;
10036
10037 if (tcp->payload_seq.len &&
10038 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10039 sizeof(tcp->payload_seq), &tcp->payload_seq))
10040 return -ENOBUFS;
10041
10042 if (tcp->payload_tok.len &&
10043 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10044 sizeof(tcp->payload_tok) + tcp->tokens_size,
10045 &tcp->payload_tok))
10046 return -ENOBUFS;
10047
10048 nla_nest_end(msg, nl_tcp);
10049
10050 return 0;
10051 }
10052
10053 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10054 struct cfg80211_sched_scan_request *req)
10055 {
10056 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10057 int i;
10058
10059 if (!req)
10060 return 0;
10061
10062 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10063 if (!nd)
10064 return -ENOBUFS;
10065
10066 if (req->n_scan_plans == 1 &&
10067 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10068 req->scan_plans[0].interval * 1000))
10069 return -ENOBUFS;
10070
10071 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10072 return -ENOBUFS;
10073
10074 if (req->relative_rssi_set) {
10075 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10076
10077 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10078 req->relative_rssi))
10079 return -ENOBUFS;
10080
10081 rssi_adjust.band = req->rssi_adjust.band;
10082 rssi_adjust.delta = req->rssi_adjust.delta;
10083 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10084 sizeof(rssi_adjust), &rssi_adjust))
10085 return -ENOBUFS;
10086 }
10087
10088 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10089 if (!freqs)
10090 return -ENOBUFS;
10091
10092 for (i = 0; i < req->n_channels; i++) {
10093 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10094 return -ENOBUFS;
10095 }
10096
10097 nla_nest_end(msg, freqs);
10098
10099 if (req->n_match_sets) {
10100 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10101 if (!matches)
10102 return -ENOBUFS;
10103
10104 for (i = 0; i < req->n_match_sets; i++) {
10105 match = nla_nest_start(msg, i);
10106 if (!match)
10107 return -ENOBUFS;
10108
10109 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10110 req->match_sets[i].ssid.ssid_len,
10111 req->match_sets[i].ssid.ssid))
10112 return -ENOBUFS;
10113 nla_nest_end(msg, match);
10114 }
10115 nla_nest_end(msg, matches);
10116 }
10117
10118 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10119 if (!scan_plans)
10120 return -ENOBUFS;
10121
10122 for (i = 0; i < req->n_scan_plans; i++) {
10123 scan_plan = nla_nest_start(msg, i + 1);
10124 if (!scan_plan)
10125 return -ENOBUFS;
10126
10127 if (!scan_plan ||
10128 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10129 req->scan_plans[i].interval) ||
10130 (req->scan_plans[i].iterations &&
10131 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10132 req->scan_plans[i].iterations)))
10133 return -ENOBUFS;
10134 nla_nest_end(msg, scan_plan);
10135 }
10136 nla_nest_end(msg, scan_plans);
10137
10138 nla_nest_end(msg, nd);
10139
10140 return 0;
10141 }
10142
10143 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10144 {
10145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10146 struct sk_buff *msg;
10147 void *hdr;
10148 u32 size = NLMSG_DEFAULT_SIZE;
10149
10150 if (!rdev->wiphy.wowlan)
10151 return -EOPNOTSUPP;
10152
10153 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10154 /* adjust size to have room for all the data */
10155 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10156 rdev->wiphy.wowlan_config->tcp->payload_len +
10157 rdev->wiphy.wowlan_config->tcp->wake_len +
10158 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10159 }
10160
10161 msg = nlmsg_new(size, GFP_KERNEL);
10162 if (!msg)
10163 return -ENOMEM;
10164
10165 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10166 NL80211_CMD_GET_WOWLAN);
10167 if (!hdr)
10168 goto nla_put_failure;
10169
10170 if (rdev->wiphy.wowlan_config) {
10171 struct nlattr *nl_wowlan;
10172
10173 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10174 if (!nl_wowlan)
10175 goto nla_put_failure;
10176
10177 if ((rdev->wiphy.wowlan_config->any &&
10178 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10179 (rdev->wiphy.wowlan_config->disconnect &&
10180 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10181 (rdev->wiphy.wowlan_config->magic_pkt &&
10182 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10183 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10184 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10185 (rdev->wiphy.wowlan_config->eap_identity_req &&
10186 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10187 (rdev->wiphy.wowlan_config->four_way_handshake &&
10188 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10189 (rdev->wiphy.wowlan_config->rfkill_release &&
10190 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10191 goto nla_put_failure;
10192
10193 if (nl80211_send_wowlan_patterns(msg, rdev))
10194 goto nla_put_failure;
10195
10196 if (nl80211_send_wowlan_tcp(msg,
10197 rdev->wiphy.wowlan_config->tcp))
10198 goto nla_put_failure;
10199
10200 if (nl80211_send_wowlan_nd(
10201 msg,
10202 rdev->wiphy.wowlan_config->nd_config))
10203 goto nla_put_failure;
10204
10205 nla_nest_end(msg, nl_wowlan);
10206 }
10207
10208 genlmsg_end(msg, hdr);
10209 return genlmsg_reply(msg, info);
10210
10211 nla_put_failure:
10212 nlmsg_free(msg);
10213 return -ENOBUFS;
10214 }
10215
10216 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10217 struct nlattr *attr,
10218 struct cfg80211_wowlan *trig)
10219 {
10220 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10221 struct cfg80211_wowlan_tcp *cfg;
10222 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10223 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10224 u32 size;
10225 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10226 int err, port;
10227
10228 if (!rdev->wiphy.wowlan->tcp)
10229 return -EINVAL;
10230
10231 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10232 nl80211_wowlan_tcp_policy, NULL);
10233 if (err)
10234 return err;
10235
10236 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10237 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10238 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10239 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10240 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10241 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10242 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10243 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10244 return -EINVAL;
10245
10246 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10247 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10248 return -EINVAL;
10249
10250 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10251 rdev->wiphy.wowlan->tcp->data_interval_max ||
10252 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10253 return -EINVAL;
10254
10255 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10256 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10257 return -EINVAL;
10258
10259 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10260 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10261 return -EINVAL;
10262
10263 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10264 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10265
10266 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10267 tokens_size = tokln - sizeof(*tok);
10268
10269 if (!tok->len || tokens_size % tok->len)
10270 return -EINVAL;
10271 if (!rdev->wiphy.wowlan->tcp->tok)
10272 return -EINVAL;
10273 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10274 return -EINVAL;
10275 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10276 return -EINVAL;
10277 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10278 return -EINVAL;
10279 if (tok->offset + tok->len > data_size)
10280 return -EINVAL;
10281 }
10282
10283 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10284 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10285 if (!rdev->wiphy.wowlan->tcp->seq)
10286 return -EINVAL;
10287 if (seq->len == 0 || seq->len > 4)
10288 return -EINVAL;
10289 if (seq->len + seq->offset > data_size)
10290 return -EINVAL;
10291 }
10292
10293 size = sizeof(*cfg);
10294 size += data_size;
10295 size += wake_size + wake_mask_size;
10296 size += tokens_size;
10297
10298 cfg = kzalloc(size, GFP_KERNEL);
10299 if (!cfg)
10300 return -ENOMEM;
10301 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10302 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10303 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10304 ETH_ALEN);
10305 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10306 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10307 else
10308 port = 0;
10309 #ifdef CONFIG_INET
10310 /* allocate a socket and port for it and use it */
10311 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10312 IPPROTO_TCP, &cfg->sock, 1);
10313 if (err) {
10314 kfree(cfg);
10315 return err;
10316 }
10317 if (inet_csk_get_port(cfg->sock->sk, port)) {
10318 sock_release(cfg->sock);
10319 kfree(cfg);
10320 return -EADDRINUSE;
10321 }
10322 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10323 #else
10324 if (!port) {
10325 kfree(cfg);
10326 return -EINVAL;
10327 }
10328 cfg->src_port = port;
10329 #endif
10330
10331 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10332 cfg->payload_len = data_size;
10333 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10334 memcpy((void *)cfg->payload,
10335 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10336 data_size);
10337 if (seq)
10338 cfg->payload_seq = *seq;
10339 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10340 cfg->wake_len = wake_size;
10341 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10342 memcpy((void *)cfg->wake_data,
10343 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10344 wake_size);
10345 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10346 data_size + wake_size;
10347 memcpy((void *)cfg->wake_mask,
10348 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10349 wake_mask_size);
10350 if (tok) {
10351 cfg->tokens_size = tokens_size;
10352 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10353 }
10354
10355 trig->tcp = cfg;
10356
10357 return 0;
10358 }
10359
10360 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10361 const struct wiphy_wowlan_support *wowlan,
10362 struct nlattr *attr,
10363 struct cfg80211_wowlan *trig)
10364 {
10365 struct nlattr **tb;
10366 int err;
10367
10368 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10369 if (!tb)
10370 return -ENOMEM;
10371
10372 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10373 err = -EOPNOTSUPP;
10374 goto out;
10375 }
10376
10377 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10378 NULL);
10379 if (err)
10380 goto out;
10381
10382 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10383 wowlan->max_nd_match_sets);
10384 err = PTR_ERR_OR_ZERO(trig->nd_config);
10385 if (err)
10386 trig->nd_config = NULL;
10387
10388 out:
10389 kfree(tb);
10390 return err;
10391 }
10392
10393 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10394 {
10395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10396 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10397 struct cfg80211_wowlan new_triggers = {};
10398 struct cfg80211_wowlan *ntrig;
10399 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10400 int err, i;
10401 bool prev_enabled = rdev->wiphy.wowlan_config;
10402 bool regular = false;
10403
10404 if (!wowlan)
10405 return -EOPNOTSUPP;
10406
10407 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10408 cfg80211_rdev_free_wowlan(rdev);
10409 rdev->wiphy.wowlan_config = NULL;
10410 goto set_wakeup;
10411 }
10412
10413 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10414 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10415 nl80211_wowlan_policy, info->extack);
10416 if (err)
10417 return err;
10418
10419 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10420 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10421 return -EINVAL;
10422 new_triggers.any = true;
10423 }
10424
10425 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10426 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10427 return -EINVAL;
10428 new_triggers.disconnect = true;
10429 regular = true;
10430 }
10431
10432 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10433 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10434 return -EINVAL;
10435 new_triggers.magic_pkt = true;
10436 regular = true;
10437 }
10438
10439 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10440 return -EINVAL;
10441
10442 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10443 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10444 return -EINVAL;
10445 new_triggers.gtk_rekey_failure = true;
10446 regular = true;
10447 }
10448
10449 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10450 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10451 return -EINVAL;
10452 new_triggers.eap_identity_req = true;
10453 regular = true;
10454 }
10455
10456 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10457 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10458 return -EINVAL;
10459 new_triggers.four_way_handshake = true;
10460 regular = true;
10461 }
10462
10463 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10464 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10465 return -EINVAL;
10466 new_triggers.rfkill_release = true;
10467 regular = true;
10468 }
10469
10470 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10471 struct nlattr *pat;
10472 int n_patterns = 0;
10473 int rem, pat_len, mask_len, pkt_offset;
10474 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10475
10476 regular = true;
10477
10478 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10479 rem)
10480 n_patterns++;
10481 if (n_patterns > wowlan->n_patterns)
10482 return -EINVAL;
10483
10484 new_triggers.patterns = kcalloc(n_patterns,
10485 sizeof(new_triggers.patterns[0]),
10486 GFP_KERNEL);
10487 if (!new_triggers.patterns)
10488 return -ENOMEM;
10489
10490 new_triggers.n_patterns = n_patterns;
10491 i = 0;
10492
10493 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10494 rem) {
10495 u8 *mask_pat;
10496
10497 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10498 NULL, info->extack);
10499 err = -EINVAL;
10500 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10501 !pat_tb[NL80211_PKTPAT_PATTERN])
10502 goto error;
10503 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10504 mask_len = DIV_ROUND_UP(pat_len, 8);
10505 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10506 goto error;
10507 if (pat_len > wowlan->pattern_max_len ||
10508 pat_len < wowlan->pattern_min_len)
10509 goto error;
10510
10511 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10512 pkt_offset = 0;
10513 else
10514 pkt_offset = nla_get_u32(
10515 pat_tb[NL80211_PKTPAT_OFFSET]);
10516 if (pkt_offset > wowlan->max_pkt_offset)
10517 goto error;
10518 new_triggers.patterns[i].pkt_offset = pkt_offset;
10519
10520 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10521 if (!mask_pat) {
10522 err = -ENOMEM;
10523 goto error;
10524 }
10525 new_triggers.patterns[i].mask = mask_pat;
10526 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10527 mask_len);
10528 mask_pat += mask_len;
10529 new_triggers.patterns[i].pattern = mask_pat;
10530 new_triggers.patterns[i].pattern_len = pat_len;
10531 memcpy(mask_pat,
10532 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10533 pat_len);
10534 i++;
10535 }
10536 }
10537
10538 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10539 regular = true;
10540 err = nl80211_parse_wowlan_tcp(
10541 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10542 &new_triggers);
10543 if (err)
10544 goto error;
10545 }
10546
10547 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10548 regular = true;
10549 err = nl80211_parse_wowlan_nd(
10550 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10551 &new_triggers);
10552 if (err)
10553 goto error;
10554 }
10555
10556 /* The 'any' trigger means the device continues operating more or less
10557 * as in its normal operation mode and wakes up the host on most of the
10558 * normal interrupts (like packet RX, ...)
10559 * It therefore makes little sense to combine with the more constrained
10560 * wakeup trigger modes.
10561 */
10562 if (new_triggers.any && regular) {
10563 err = -EINVAL;
10564 goto error;
10565 }
10566
10567 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10568 if (!ntrig) {
10569 err = -ENOMEM;
10570 goto error;
10571 }
10572 cfg80211_rdev_free_wowlan(rdev);
10573 rdev->wiphy.wowlan_config = ntrig;
10574
10575 set_wakeup:
10576 if (rdev->ops->set_wakeup &&
10577 prev_enabled != !!rdev->wiphy.wowlan_config)
10578 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10579
10580 return 0;
10581 error:
10582 for (i = 0; i < new_triggers.n_patterns; i++)
10583 kfree(new_triggers.patterns[i].mask);
10584 kfree(new_triggers.patterns);
10585 if (new_triggers.tcp && new_triggers.tcp->sock)
10586 sock_release(new_triggers.tcp->sock);
10587 kfree(new_triggers.tcp);
10588 kfree(new_triggers.nd_config);
10589 return err;
10590 }
10591 #endif
10592
10593 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10594 struct cfg80211_registered_device *rdev)
10595 {
10596 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10597 int i, j, pat_len;
10598 struct cfg80211_coalesce_rules *rule;
10599
10600 if (!rdev->coalesce->n_rules)
10601 return 0;
10602
10603 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10604 if (!nl_rules)
10605 return -ENOBUFS;
10606
10607 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10608 nl_rule = nla_nest_start(msg, i + 1);
10609 if (!nl_rule)
10610 return -ENOBUFS;
10611
10612 rule = &rdev->coalesce->rules[i];
10613 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10614 rule->delay))
10615 return -ENOBUFS;
10616
10617 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10618 rule->condition))
10619 return -ENOBUFS;
10620
10621 nl_pats = nla_nest_start(msg,
10622 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10623 if (!nl_pats)
10624 return -ENOBUFS;
10625
10626 for (j = 0; j < rule->n_patterns; j++) {
10627 nl_pat = nla_nest_start(msg, j + 1);
10628 if (!nl_pat)
10629 return -ENOBUFS;
10630 pat_len = rule->patterns[j].pattern_len;
10631 if (nla_put(msg, NL80211_PKTPAT_MASK,
10632 DIV_ROUND_UP(pat_len, 8),
10633 rule->patterns[j].mask) ||
10634 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10635 rule->patterns[j].pattern) ||
10636 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10637 rule->patterns[j].pkt_offset))
10638 return -ENOBUFS;
10639 nla_nest_end(msg, nl_pat);
10640 }
10641 nla_nest_end(msg, nl_pats);
10642 nla_nest_end(msg, nl_rule);
10643 }
10644 nla_nest_end(msg, nl_rules);
10645
10646 return 0;
10647 }
10648
10649 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10650 {
10651 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10652 struct sk_buff *msg;
10653 void *hdr;
10654
10655 if (!rdev->wiphy.coalesce)
10656 return -EOPNOTSUPP;
10657
10658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10659 if (!msg)
10660 return -ENOMEM;
10661
10662 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10663 NL80211_CMD_GET_COALESCE);
10664 if (!hdr)
10665 goto nla_put_failure;
10666
10667 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10668 goto nla_put_failure;
10669
10670 genlmsg_end(msg, hdr);
10671 return genlmsg_reply(msg, info);
10672
10673 nla_put_failure:
10674 nlmsg_free(msg);
10675 return -ENOBUFS;
10676 }
10677
10678 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10679 {
10680 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10681 int i, j;
10682 struct cfg80211_coalesce_rules *rule;
10683
10684 if (!coalesce)
10685 return;
10686
10687 for (i = 0; i < coalesce->n_rules; i++) {
10688 rule = &coalesce->rules[i];
10689 for (j = 0; j < rule->n_patterns; j++)
10690 kfree(rule->patterns[j].mask);
10691 kfree(rule->patterns);
10692 }
10693 kfree(coalesce->rules);
10694 kfree(coalesce);
10695 rdev->coalesce = NULL;
10696 }
10697
10698 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10699 struct nlattr *rule,
10700 struct cfg80211_coalesce_rules *new_rule)
10701 {
10702 int err, i;
10703 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10704 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10705 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10706 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10707
10708 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10709 nl80211_coalesce_policy, NULL);
10710 if (err)
10711 return err;
10712
10713 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10714 new_rule->delay =
10715 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10716 if (new_rule->delay > coalesce->max_delay)
10717 return -EINVAL;
10718
10719 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10720 new_rule->condition =
10721 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10722 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10723 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10724 return -EINVAL;
10725
10726 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10727 return -EINVAL;
10728
10729 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10730 rem)
10731 n_patterns++;
10732 if (n_patterns > coalesce->n_patterns)
10733 return -EINVAL;
10734
10735 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10736 GFP_KERNEL);
10737 if (!new_rule->patterns)
10738 return -ENOMEM;
10739
10740 new_rule->n_patterns = n_patterns;
10741 i = 0;
10742
10743 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10744 rem) {
10745 u8 *mask_pat;
10746
10747 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL, NULL);
10748 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10749 !pat_tb[NL80211_PKTPAT_PATTERN])
10750 return -EINVAL;
10751 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10752 mask_len = DIV_ROUND_UP(pat_len, 8);
10753 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10754 return -EINVAL;
10755 if (pat_len > coalesce->pattern_max_len ||
10756 pat_len < coalesce->pattern_min_len)
10757 return -EINVAL;
10758
10759 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10760 pkt_offset = 0;
10761 else
10762 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10763 if (pkt_offset > coalesce->max_pkt_offset)
10764 return -EINVAL;
10765 new_rule->patterns[i].pkt_offset = pkt_offset;
10766
10767 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10768 if (!mask_pat)
10769 return -ENOMEM;
10770
10771 new_rule->patterns[i].mask = mask_pat;
10772 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10773 mask_len);
10774
10775 mask_pat += mask_len;
10776 new_rule->patterns[i].pattern = mask_pat;
10777 new_rule->patterns[i].pattern_len = pat_len;
10778 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10779 pat_len);
10780 i++;
10781 }
10782
10783 return 0;
10784 }
10785
10786 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10787 {
10788 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10789 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10790 struct cfg80211_coalesce new_coalesce = {};
10791 struct cfg80211_coalesce *n_coalesce;
10792 int err, rem_rule, n_rules = 0, i, j;
10793 struct nlattr *rule;
10794 struct cfg80211_coalesce_rules *tmp_rule;
10795
10796 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10797 return -EOPNOTSUPP;
10798
10799 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10800 cfg80211_rdev_free_coalesce(rdev);
10801 rdev_set_coalesce(rdev, NULL);
10802 return 0;
10803 }
10804
10805 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10806 rem_rule)
10807 n_rules++;
10808 if (n_rules > coalesce->n_rules)
10809 return -EINVAL;
10810
10811 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10812 GFP_KERNEL);
10813 if (!new_coalesce.rules)
10814 return -ENOMEM;
10815
10816 new_coalesce.n_rules = n_rules;
10817 i = 0;
10818
10819 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10820 rem_rule) {
10821 err = nl80211_parse_coalesce_rule(rdev, rule,
10822 &new_coalesce.rules[i]);
10823 if (err)
10824 goto error;
10825
10826 i++;
10827 }
10828
10829 err = rdev_set_coalesce(rdev, &new_coalesce);
10830 if (err)
10831 goto error;
10832
10833 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10834 if (!n_coalesce) {
10835 err = -ENOMEM;
10836 goto error;
10837 }
10838 cfg80211_rdev_free_coalesce(rdev);
10839 rdev->coalesce = n_coalesce;
10840
10841 return 0;
10842 error:
10843 for (i = 0; i < new_coalesce.n_rules; i++) {
10844 tmp_rule = &new_coalesce.rules[i];
10845 for (j = 0; j < tmp_rule->n_patterns; j++)
10846 kfree(tmp_rule->patterns[j].mask);
10847 kfree(tmp_rule->patterns);
10848 }
10849 kfree(new_coalesce.rules);
10850
10851 return err;
10852 }
10853
10854 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10855 {
10856 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10857 struct net_device *dev = info->user_ptr[1];
10858 struct wireless_dev *wdev = dev->ieee80211_ptr;
10859 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10860 struct cfg80211_gtk_rekey_data rekey_data;
10861 int err;
10862
10863 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10864 return -EINVAL;
10865
10866 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10867 info->attrs[NL80211_ATTR_REKEY_DATA],
10868 nl80211_rekey_policy, info->extack);
10869 if (err)
10870 return err;
10871
10872 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10873 return -ERANGE;
10874 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10875 return -ERANGE;
10876 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10877 return -ERANGE;
10878
10879 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10880 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10881 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10882
10883 wdev_lock(wdev);
10884 if (!wdev->current_bss) {
10885 err = -ENOTCONN;
10886 goto out;
10887 }
10888
10889 if (!rdev->ops->set_rekey_data) {
10890 err = -EOPNOTSUPP;
10891 goto out;
10892 }
10893
10894 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10895 out:
10896 wdev_unlock(wdev);
10897 return err;
10898 }
10899
10900 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10901 struct genl_info *info)
10902 {
10903 struct net_device *dev = info->user_ptr[1];
10904 struct wireless_dev *wdev = dev->ieee80211_ptr;
10905
10906 if (wdev->iftype != NL80211_IFTYPE_AP &&
10907 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10908 return -EINVAL;
10909
10910 if (wdev->ap_unexpected_nlportid)
10911 return -EBUSY;
10912
10913 wdev->ap_unexpected_nlportid = info->snd_portid;
10914 return 0;
10915 }
10916
10917 static int nl80211_probe_client(struct sk_buff *skb,
10918 struct genl_info *info)
10919 {
10920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10921 struct net_device *dev = info->user_ptr[1];
10922 struct wireless_dev *wdev = dev->ieee80211_ptr;
10923 struct sk_buff *msg;
10924 void *hdr;
10925 const u8 *addr;
10926 u64 cookie;
10927 int err;
10928
10929 if (wdev->iftype != NL80211_IFTYPE_AP &&
10930 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10931 return -EOPNOTSUPP;
10932
10933 if (!info->attrs[NL80211_ATTR_MAC])
10934 return -EINVAL;
10935
10936 if (!rdev->ops->probe_client)
10937 return -EOPNOTSUPP;
10938
10939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10940 if (!msg)
10941 return -ENOMEM;
10942
10943 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10944 NL80211_CMD_PROBE_CLIENT);
10945 if (!hdr) {
10946 err = -ENOBUFS;
10947 goto free_msg;
10948 }
10949
10950 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10951
10952 err = rdev_probe_client(rdev, dev, addr, &cookie);
10953 if (err)
10954 goto free_msg;
10955
10956 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10957 NL80211_ATTR_PAD))
10958 goto nla_put_failure;
10959
10960 genlmsg_end(msg, hdr);
10961
10962 return genlmsg_reply(msg, info);
10963
10964 nla_put_failure:
10965 err = -ENOBUFS;
10966 free_msg:
10967 nlmsg_free(msg);
10968 return err;
10969 }
10970
10971 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10972 {
10973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10974 struct cfg80211_beacon_registration *reg, *nreg;
10975 int rv;
10976
10977 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10978 return -EOPNOTSUPP;
10979
10980 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10981 if (!nreg)
10982 return -ENOMEM;
10983
10984 /* First, check if already registered. */
10985 spin_lock_bh(&rdev->beacon_registrations_lock);
10986 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10987 if (reg->nlportid == info->snd_portid) {
10988 rv = -EALREADY;
10989 goto out_err;
10990 }
10991 }
10992 /* Add it to the list */
10993 nreg->nlportid = info->snd_portid;
10994 list_add(&nreg->list, &rdev->beacon_registrations);
10995
10996 spin_unlock_bh(&rdev->beacon_registrations_lock);
10997
10998 return 0;
10999 out_err:
11000 spin_unlock_bh(&rdev->beacon_registrations_lock);
11001 kfree(nreg);
11002 return rv;
11003 }
11004
11005 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11006 {
11007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11008 struct wireless_dev *wdev = info->user_ptr[1];
11009 int err;
11010
11011 if (!rdev->ops->start_p2p_device)
11012 return -EOPNOTSUPP;
11013
11014 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11015 return -EOPNOTSUPP;
11016
11017 if (wdev_running(wdev))
11018 return 0;
11019
11020 if (rfkill_blocked(rdev->rfkill))
11021 return -ERFKILL;
11022
11023 err = rdev_start_p2p_device(rdev, wdev);
11024 if (err)
11025 return err;
11026
11027 wdev->is_running = true;
11028 rdev->opencount++;
11029
11030 return 0;
11031 }
11032
11033 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11034 {
11035 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11036 struct wireless_dev *wdev = info->user_ptr[1];
11037
11038 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11039 return -EOPNOTSUPP;
11040
11041 if (!rdev->ops->stop_p2p_device)
11042 return -EOPNOTSUPP;
11043
11044 cfg80211_stop_p2p_device(rdev, wdev);
11045
11046 return 0;
11047 }
11048
11049 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11050 {
11051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11052 struct wireless_dev *wdev = info->user_ptr[1];
11053 struct cfg80211_nan_conf conf = {};
11054 int err;
11055
11056 if (wdev->iftype != NL80211_IFTYPE_NAN)
11057 return -EOPNOTSUPP;
11058
11059 if (wdev_running(wdev))
11060 return -EEXIST;
11061
11062 if (rfkill_blocked(rdev->rfkill))
11063 return -ERFKILL;
11064
11065 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11066 return -EINVAL;
11067
11068 conf.master_pref =
11069 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11070 if (!conf.master_pref)
11071 return -EINVAL;
11072
11073 if (info->attrs[NL80211_ATTR_BANDS]) {
11074 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11075
11076 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11077 return -EOPNOTSUPP;
11078
11079 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11080 return -EINVAL;
11081
11082 conf.bands = bands;
11083 }
11084
11085 err = rdev_start_nan(rdev, wdev, &conf);
11086 if (err)
11087 return err;
11088
11089 wdev->is_running = true;
11090 rdev->opencount++;
11091
11092 return 0;
11093 }
11094
11095 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11096 {
11097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11098 struct wireless_dev *wdev = info->user_ptr[1];
11099
11100 if (wdev->iftype != NL80211_IFTYPE_NAN)
11101 return -EOPNOTSUPP;
11102
11103 cfg80211_stop_nan(rdev, wdev);
11104
11105 return 0;
11106 }
11107
11108 static int validate_nan_filter(struct nlattr *filter_attr)
11109 {
11110 struct nlattr *attr;
11111 int len = 0, n_entries = 0, rem;
11112
11113 nla_for_each_nested(attr, filter_attr, rem) {
11114 len += nla_len(attr);
11115 n_entries++;
11116 }
11117
11118 if (len >= U8_MAX)
11119 return -EINVAL;
11120
11121 return n_entries;
11122 }
11123
11124 static int handle_nan_filter(struct nlattr *attr_filter,
11125 struct cfg80211_nan_func *func,
11126 bool tx)
11127 {
11128 struct nlattr *attr;
11129 int n_entries, rem, i;
11130 struct cfg80211_nan_func_filter *filter;
11131
11132 n_entries = validate_nan_filter(attr_filter);
11133 if (n_entries < 0)
11134 return n_entries;
11135
11136 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11137
11138 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11139 if (!filter)
11140 return -ENOMEM;
11141
11142 i = 0;
11143 nla_for_each_nested(attr, attr_filter, rem) {
11144 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11145 filter[i].len = nla_len(attr);
11146 i++;
11147 }
11148 if (tx) {
11149 func->num_tx_filters = n_entries;
11150 func->tx_filters = filter;
11151 } else {
11152 func->num_rx_filters = n_entries;
11153 func->rx_filters = filter;
11154 }
11155
11156 return 0;
11157 }
11158
11159 static int nl80211_nan_add_func(struct sk_buff *skb,
11160 struct genl_info *info)
11161 {
11162 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11163 struct wireless_dev *wdev = info->user_ptr[1];
11164 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11165 struct cfg80211_nan_func *func;
11166 struct sk_buff *msg = NULL;
11167 void *hdr = NULL;
11168 int err = 0;
11169
11170 if (wdev->iftype != NL80211_IFTYPE_NAN)
11171 return -EOPNOTSUPP;
11172
11173 if (!wdev_running(wdev))
11174 return -ENOTCONN;
11175
11176 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11177 return -EINVAL;
11178
11179 if (wdev->owner_nlportid &&
11180 wdev->owner_nlportid != info->snd_portid)
11181 return -ENOTCONN;
11182
11183 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11184 info->attrs[NL80211_ATTR_NAN_FUNC],
11185 nl80211_nan_func_policy, info->extack);
11186 if (err)
11187 return err;
11188
11189 func = kzalloc(sizeof(*func), GFP_KERNEL);
11190 if (!func)
11191 return -ENOMEM;
11192
11193 func->cookie = wdev->wiphy->cookie_counter++;
11194
11195 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11196 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11197 err = -EINVAL;
11198 goto out;
11199 }
11200
11201
11202 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11203
11204 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11205 err = -EINVAL;
11206 goto out;
11207 }
11208
11209 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11210 sizeof(func->service_id));
11211
11212 func->close_range =
11213 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11214
11215 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11216 func->serv_spec_info_len =
11217 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11218 func->serv_spec_info =
11219 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11220 func->serv_spec_info_len,
11221 GFP_KERNEL);
11222 if (!func->serv_spec_info) {
11223 err = -ENOMEM;
11224 goto out;
11225 }
11226 }
11227
11228 if (tb[NL80211_NAN_FUNC_TTL])
11229 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11230
11231 switch (func->type) {
11232 case NL80211_NAN_FUNC_PUBLISH:
11233 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11234 err = -EINVAL;
11235 goto out;
11236 }
11237
11238 func->publish_type =
11239 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11240 func->publish_bcast =
11241 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11242
11243 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11244 func->publish_bcast) {
11245 err = -EINVAL;
11246 goto out;
11247 }
11248 break;
11249 case NL80211_NAN_FUNC_SUBSCRIBE:
11250 func->subscribe_active =
11251 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11252 break;
11253 case NL80211_NAN_FUNC_FOLLOW_UP:
11254 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11255 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
11256 err = -EINVAL;
11257 goto out;
11258 }
11259
11260 func->followup_id =
11261 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11262 func->followup_reqid =
11263 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11264 memcpy(func->followup_dest.addr,
11265 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11266 sizeof(func->followup_dest.addr));
11267 if (func->ttl) {
11268 err = -EINVAL;
11269 goto out;
11270 }
11271 break;
11272 default:
11273 err = -EINVAL;
11274 goto out;
11275 }
11276
11277 if (tb[NL80211_NAN_FUNC_SRF]) {
11278 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11279
11280 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11281 tb[NL80211_NAN_FUNC_SRF],
11282 nl80211_nan_srf_policy, info->extack);
11283 if (err)
11284 goto out;
11285
11286 func->srf_include =
11287 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11288
11289 if (srf_tb[NL80211_NAN_SRF_BF]) {
11290 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11291 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11292 err = -EINVAL;
11293 goto out;
11294 }
11295
11296 func->srf_bf_len =
11297 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11298 func->srf_bf =
11299 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11300 func->srf_bf_len, GFP_KERNEL);
11301 if (!func->srf_bf) {
11302 err = -ENOMEM;
11303 goto out;
11304 }
11305
11306 func->srf_bf_idx =
11307 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11308 } else {
11309 struct nlattr *attr, *mac_attr =
11310 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11311 int n_entries, rem, i = 0;
11312
11313 if (!mac_attr) {
11314 err = -EINVAL;
11315 goto out;
11316 }
11317
11318 n_entries = validate_acl_mac_addrs(mac_attr);
11319 if (n_entries <= 0) {
11320 err = -EINVAL;
11321 goto out;
11322 }
11323
11324 func->srf_num_macs = n_entries;
11325 func->srf_macs =
11326 kzalloc(sizeof(*func->srf_macs) * n_entries,
11327 GFP_KERNEL);
11328 if (!func->srf_macs) {
11329 err = -ENOMEM;
11330 goto out;
11331 }
11332
11333 nla_for_each_nested(attr, mac_attr, rem)
11334 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11335 sizeof(*func->srf_macs));
11336 }
11337 }
11338
11339 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11340 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11341 func, true);
11342 if (err)
11343 goto out;
11344 }
11345
11346 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11347 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11348 func, false);
11349 if (err)
11350 goto out;
11351 }
11352
11353 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11354 if (!msg) {
11355 err = -ENOMEM;
11356 goto out;
11357 }
11358
11359 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11360 NL80211_CMD_ADD_NAN_FUNCTION);
11361 /* This can't really happen - we just allocated 4KB */
11362 if (WARN_ON(!hdr)) {
11363 err = -ENOMEM;
11364 goto out;
11365 }
11366
11367 err = rdev_add_nan_func(rdev, wdev, func);
11368 out:
11369 if (err < 0) {
11370 cfg80211_free_nan_func(func);
11371 nlmsg_free(msg);
11372 return err;
11373 }
11374
11375 /* propagate the instance id and cookie to userspace */
11376 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11377 NL80211_ATTR_PAD))
11378 goto nla_put_failure;
11379
11380 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11381 if (!func_attr)
11382 goto nla_put_failure;
11383
11384 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11385 func->instance_id))
11386 goto nla_put_failure;
11387
11388 nla_nest_end(msg, func_attr);
11389
11390 genlmsg_end(msg, hdr);
11391 return genlmsg_reply(msg, info);
11392
11393 nla_put_failure:
11394 nlmsg_free(msg);
11395 return -ENOBUFS;
11396 }
11397
11398 static int nl80211_nan_del_func(struct sk_buff *skb,
11399 struct genl_info *info)
11400 {
11401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11402 struct wireless_dev *wdev = info->user_ptr[1];
11403 u64 cookie;
11404
11405 if (wdev->iftype != NL80211_IFTYPE_NAN)
11406 return -EOPNOTSUPP;
11407
11408 if (!wdev_running(wdev))
11409 return -ENOTCONN;
11410
11411 if (!info->attrs[NL80211_ATTR_COOKIE])
11412 return -EINVAL;
11413
11414 if (wdev->owner_nlportid &&
11415 wdev->owner_nlportid != info->snd_portid)
11416 return -ENOTCONN;
11417
11418 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11419
11420 rdev_del_nan_func(rdev, wdev, cookie);
11421
11422 return 0;
11423 }
11424
11425 static int nl80211_nan_change_config(struct sk_buff *skb,
11426 struct genl_info *info)
11427 {
11428 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11429 struct wireless_dev *wdev = info->user_ptr[1];
11430 struct cfg80211_nan_conf conf = {};
11431 u32 changed = 0;
11432
11433 if (wdev->iftype != NL80211_IFTYPE_NAN)
11434 return -EOPNOTSUPP;
11435
11436 if (!wdev_running(wdev))
11437 return -ENOTCONN;
11438
11439 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11440 conf.master_pref =
11441 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11442 if (conf.master_pref <= 1 || conf.master_pref == 255)
11443 return -EINVAL;
11444
11445 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11446 }
11447
11448 if (info->attrs[NL80211_ATTR_BANDS]) {
11449 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11450
11451 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11452 return -EOPNOTSUPP;
11453
11454 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11455 return -EINVAL;
11456
11457 conf.bands = bands;
11458 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11459 }
11460
11461 if (!changed)
11462 return -EINVAL;
11463
11464 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11465 }
11466
11467 void cfg80211_nan_match(struct wireless_dev *wdev,
11468 struct cfg80211_nan_match_params *match, gfp_t gfp)
11469 {
11470 struct wiphy *wiphy = wdev->wiphy;
11471 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11472 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11473 struct sk_buff *msg;
11474 void *hdr;
11475
11476 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11477 return;
11478
11479 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11480 if (!msg)
11481 return;
11482
11483 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11484 if (!hdr) {
11485 nlmsg_free(msg);
11486 return;
11487 }
11488
11489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11490 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11491 wdev->netdev->ifindex)) ||
11492 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11493 NL80211_ATTR_PAD))
11494 goto nla_put_failure;
11495
11496 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11497 NL80211_ATTR_PAD) ||
11498 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11499 goto nla_put_failure;
11500
11501 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11502 if (!match_attr)
11503 goto nla_put_failure;
11504
11505 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11506 if (!local_func_attr)
11507 goto nla_put_failure;
11508
11509 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11510 goto nla_put_failure;
11511
11512 nla_nest_end(msg, local_func_attr);
11513
11514 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11515 if (!peer_func_attr)
11516 goto nla_put_failure;
11517
11518 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11519 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11520 goto nla_put_failure;
11521
11522 if (match->info && match->info_len &&
11523 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11524 match->info))
11525 goto nla_put_failure;
11526
11527 nla_nest_end(msg, peer_func_attr);
11528 nla_nest_end(msg, match_attr);
11529 genlmsg_end(msg, hdr);
11530
11531 if (!wdev->owner_nlportid)
11532 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11533 msg, 0, NL80211_MCGRP_NAN, gfp);
11534 else
11535 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11536 wdev->owner_nlportid);
11537
11538 return;
11539
11540 nla_put_failure:
11541 nlmsg_free(msg);
11542 }
11543 EXPORT_SYMBOL(cfg80211_nan_match);
11544
11545 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11546 u8 inst_id,
11547 enum nl80211_nan_func_term_reason reason,
11548 u64 cookie, gfp_t gfp)
11549 {
11550 struct wiphy *wiphy = wdev->wiphy;
11551 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11552 struct sk_buff *msg;
11553 struct nlattr *func_attr;
11554 void *hdr;
11555
11556 if (WARN_ON(!inst_id))
11557 return;
11558
11559 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11560 if (!msg)
11561 return;
11562
11563 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11564 if (!hdr) {
11565 nlmsg_free(msg);
11566 return;
11567 }
11568
11569 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11570 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11571 wdev->netdev->ifindex)) ||
11572 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11573 NL80211_ATTR_PAD))
11574 goto nla_put_failure;
11575
11576 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11577 NL80211_ATTR_PAD))
11578 goto nla_put_failure;
11579
11580 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11581 if (!func_attr)
11582 goto nla_put_failure;
11583
11584 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11585 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11586 goto nla_put_failure;
11587
11588 nla_nest_end(msg, func_attr);
11589 genlmsg_end(msg, hdr);
11590
11591 if (!wdev->owner_nlportid)
11592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11593 msg, 0, NL80211_MCGRP_NAN, gfp);
11594 else
11595 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11596 wdev->owner_nlportid);
11597
11598 return;
11599
11600 nla_put_failure:
11601 nlmsg_free(msg);
11602 }
11603 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11604
11605 static int nl80211_get_protocol_features(struct sk_buff *skb,
11606 struct genl_info *info)
11607 {
11608 void *hdr;
11609 struct sk_buff *msg;
11610
11611 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11612 if (!msg)
11613 return -ENOMEM;
11614
11615 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11616 NL80211_CMD_GET_PROTOCOL_FEATURES);
11617 if (!hdr)
11618 goto nla_put_failure;
11619
11620 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11621 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11622 goto nla_put_failure;
11623
11624 genlmsg_end(msg, hdr);
11625 return genlmsg_reply(msg, info);
11626
11627 nla_put_failure:
11628 kfree_skb(msg);
11629 return -ENOBUFS;
11630 }
11631
11632 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11633 {
11634 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11635 struct cfg80211_update_ft_ies_params ft_params;
11636 struct net_device *dev = info->user_ptr[1];
11637
11638 if (!rdev->ops->update_ft_ies)
11639 return -EOPNOTSUPP;
11640
11641 if (!info->attrs[NL80211_ATTR_MDID] ||
11642 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11643 return -EINVAL;
11644
11645 memset(&ft_params, 0, sizeof(ft_params));
11646 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11647 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11648 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11649
11650 return rdev_update_ft_ies(rdev, dev, &ft_params);
11651 }
11652
11653 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11654 struct genl_info *info)
11655 {
11656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11657 struct wireless_dev *wdev = info->user_ptr[1];
11658 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11659 u16 duration;
11660 int ret;
11661
11662 if (!rdev->ops->crit_proto_start)
11663 return -EOPNOTSUPP;
11664
11665 if (WARN_ON(!rdev->ops->crit_proto_stop))
11666 return -EINVAL;
11667
11668 if (rdev->crit_proto_nlportid)
11669 return -EBUSY;
11670
11671 /* determine protocol if provided */
11672 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11673 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11674
11675 if (proto >= NUM_NL80211_CRIT_PROTO)
11676 return -EINVAL;
11677
11678 /* timeout must be provided */
11679 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11680 return -EINVAL;
11681
11682 duration =
11683 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11684
11685 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11686 return -ERANGE;
11687
11688 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11689 if (!ret)
11690 rdev->crit_proto_nlportid = info->snd_portid;
11691
11692 return ret;
11693 }
11694
11695 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11696 struct genl_info *info)
11697 {
11698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11699 struct wireless_dev *wdev = info->user_ptr[1];
11700
11701 if (!rdev->ops->crit_proto_stop)
11702 return -EOPNOTSUPP;
11703
11704 if (rdev->crit_proto_nlportid) {
11705 rdev->crit_proto_nlportid = 0;
11706 rdev_crit_proto_stop(rdev, wdev);
11707 }
11708 return 0;
11709 }
11710
11711 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11712 {
11713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11714 struct wireless_dev *wdev =
11715 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11716 int i, err;
11717 u32 vid, subcmd;
11718
11719 if (!rdev->wiphy.vendor_commands)
11720 return -EOPNOTSUPP;
11721
11722 if (IS_ERR(wdev)) {
11723 err = PTR_ERR(wdev);
11724 if (err != -EINVAL)
11725 return err;
11726 wdev = NULL;
11727 } else if (wdev->wiphy != &rdev->wiphy) {
11728 return -EINVAL;
11729 }
11730
11731 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11732 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11733 return -EINVAL;
11734
11735 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11736 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11737 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11738 const struct wiphy_vendor_command *vcmd;
11739 void *data = NULL;
11740 int len = 0;
11741
11742 vcmd = &rdev->wiphy.vendor_commands[i];
11743
11744 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11745 continue;
11746
11747 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11748 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11749 if (!wdev)
11750 return -EINVAL;
11751 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11752 !wdev->netdev)
11753 return -EINVAL;
11754
11755 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11756 if (!wdev_running(wdev))
11757 return -ENETDOWN;
11758 }
11759
11760 if (!vcmd->doit)
11761 return -EOPNOTSUPP;
11762 } else {
11763 wdev = NULL;
11764 }
11765
11766 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11767 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11768 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11769 }
11770
11771 rdev->cur_cmd_info = info;
11772 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11773 data, len);
11774 rdev->cur_cmd_info = NULL;
11775 return err;
11776 }
11777
11778 return -EOPNOTSUPP;
11779 }
11780
11781 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11782 struct netlink_callback *cb,
11783 struct cfg80211_registered_device **rdev,
11784 struct wireless_dev **wdev)
11785 {
11786 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11787 u32 vid, subcmd;
11788 unsigned int i;
11789 int vcmd_idx = -1;
11790 int err;
11791 void *data = NULL;
11792 unsigned int data_len = 0;
11793
11794 if (cb->args[0]) {
11795 /* subtract the 1 again here */
11796 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11797 struct wireless_dev *tmp;
11798
11799 if (!wiphy)
11800 return -ENODEV;
11801 *rdev = wiphy_to_rdev(wiphy);
11802 *wdev = NULL;
11803
11804 if (cb->args[1]) {
11805 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11806 if (tmp->identifier == cb->args[1] - 1) {
11807 *wdev = tmp;
11808 break;
11809 }
11810 }
11811 }
11812
11813 /* keep rtnl locked in successful case */
11814 return 0;
11815 }
11816
11817 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11818 nl80211_fam.maxattr, nl80211_policy, NULL);
11819 if (err)
11820 return err;
11821
11822 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11823 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11824 return -EINVAL;
11825
11826 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11827 if (IS_ERR(*wdev))
11828 *wdev = NULL;
11829
11830 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11831 if (IS_ERR(*rdev))
11832 return PTR_ERR(*rdev);
11833
11834 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11835 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11836
11837 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11838 const struct wiphy_vendor_command *vcmd;
11839
11840 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11841
11842 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11843 continue;
11844
11845 if (!vcmd->dumpit)
11846 return -EOPNOTSUPP;
11847
11848 vcmd_idx = i;
11849 break;
11850 }
11851
11852 if (vcmd_idx < 0)
11853 return -EOPNOTSUPP;
11854
11855 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11856 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11857 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11858 }
11859
11860 /* 0 is the first index - add 1 to parse only once */
11861 cb->args[0] = (*rdev)->wiphy_idx + 1;
11862 /* add 1 to know if it was NULL */
11863 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11864 cb->args[2] = vcmd_idx;
11865 cb->args[3] = (unsigned long)data;
11866 cb->args[4] = data_len;
11867
11868 /* keep rtnl locked in successful case */
11869 return 0;
11870 }
11871
11872 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11873 struct netlink_callback *cb)
11874 {
11875 struct cfg80211_registered_device *rdev;
11876 struct wireless_dev *wdev;
11877 unsigned int vcmd_idx;
11878 const struct wiphy_vendor_command *vcmd;
11879 void *data;
11880 int data_len;
11881 int err;
11882 struct nlattr *vendor_data;
11883
11884 rtnl_lock();
11885 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11886 if (err)
11887 goto out;
11888
11889 vcmd_idx = cb->args[2];
11890 data = (void *)cb->args[3];
11891 data_len = cb->args[4];
11892 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11893
11894 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11895 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11896 if (!wdev) {
11897 err = -EINVAL;
11898 goto out;
11899 }
11900 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11901 !wdev->netdev) {
11902 err = -EINVAL;
11903 goto out;
11904 }
11905
11906 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11907 if (!wdev_running(wdev)) {
11908 err = -ENETDOWN;
11909 goto out;
11910 }
11911 }
11912 }
11913
11914 while (1) {
11915 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11916 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11917 NL80211_CMD_VENDOR);
11918 if (!hdr)
11919 break;
11920
11921 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11922 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11923 wdev_id(wdev),
11924 NL80211_ATTR_PAD))) {
11925 genlmsg_cancel(skb, hdr);
11926 break;
11927 }
11928
11929 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11930 if (!vendor_data) {
11931 genlmsg_cancel(skb, hdr);
11932 break;
11933 }
11934
11935 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11936 (unsigned long *)&cb->args[5]);
11937 nla_nest_end(skb, vendor_data);
11938
11939 if (err == -ENOBUFS || err == -ENOENT) {
11940 genlmsg_cancel(skb, hdr);
11941 break;
11942 } else if (err) {
11943 genlmsg_cancel(skb, hdr);
11944 goto out;
11945 }
11946
11947 genlmsg_end(skb, hdr);
11948 }
11949
11950 err = skb->len;
11951 out:
11952 rtnl_unlock();
11953 return err;
11954 }
11955
11956 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11957 enum nl80211_commands cmd,
11958 enum nl80211_attrs attr,
11959 int approxlen)
11960 {
11961 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11962
11963 if (WARN_ON(!rdev->cur_cmd_info))
11964 return NULL;
11965
11966 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11967 rdev->cur_cmd_info->snd_portid,
11968 rdev->cur_cmd_info->snd_seq,
11969 cmd, attr, NULL, GFP_KERNEL);
11970 }
11971 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11972
11973 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11974 {
11975 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11976 void *hdr = ((void **)skb->cb)[1];
11977 struct nlattr *data = ((void **)skb->cb)[2];
11978
11979 /* clear CB data for netlink core to own from now on */
11980 memset(skb->cb, 0, sizeof(skb->cb));
11981
11982 if (WARN_ON(!rdev->cur_cmd_info)) {
11983 kfree_skb(skb);
11984 return -EINVAL;
11985 }
11986
11987 nla_nest_end(skb, data);
11988 genlmsg_end(skb, hdr);
11989 return genlmsg_reply(skb, rdev->cur_cmd_info);
11990 }
11991 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11992
11993 static int nl80211_set_qos_map(struct sk_buff *skb,
11994 struct genl_info *info)
11995 {
11996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11997 struct cfg80211_qos_map *qos_map = NULL;
11998 struct net_device *dev = info->user_ptr[1];
11999 u8 *pos, len, num_des, des_len, des;
12000 int ret;
12001
12002 if (!rdev->ops->set_qos_map)
12003 return -EOPNOTSUPP;
12004
12005 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12006 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12007 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12008
12009 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12010 len > IEEE80211_QOS_MAP_LEN_MAX)
12011 return -EINVAL;
12012
12013 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12014 if (!qos_map)
12015 return -ENOMEM;
12016
12017 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12018 if (num_des) {
12019 des_len = num_des *
12020 sizeof(struct cfg80211_dscp_exception);
12021 memcpy(qos_map->dscp_exception, pos, des_len);
12022 qos_map->num_des = num_des;
12023 for (des = 0; des < num_des; des++) {
12024 if (qos_map->dscp_exception[des].up > 7) {
12025 kfree(qos_map);
12026 return -EINVAL;
12027 }
12028 }
12029 pos += des_len;
12030 }
12031 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12032 }
12033
12034 wdev_lock(dev->ieee80211_ptr);
12035 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12036 if (!ret)
12037 ret = rdev_set_qos_map(rdev, dev, qos_map);
12038 wdev_unlock(dev->ieee80211_ptr);
12039
12040 kfree(qos_map);
12041 return ret;
12042 }
12043
12044 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12045 {
12046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12047 struct net_device *dev = info->user_ptr[1];
12048 struct wireless_dev *wdev = dev->ieee80211_ptr;
12049 const u8 *peer;
12050 u8 tsid, up;
12051 u16 admitted_time = 0;
12052 int err;
12053
12054 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12055 return -EOPNOTSUPP;
12056
12057 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12058 !info->attrs[NL80211_ATTR_USER_PRIO])
12059 return -EINVAL;
12060
12061 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12062 if (tsid >= IEEE80211_NUM_TIDS)
12063 return -EINVAL;
12064
12065 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12066 if (up >= IEEE80211_NUM_UPS)
12067 return -EINVAL;
12068
12069 /* WMM uses TIDs 0-7 even for TSPEC */
12070 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12071 /* TODO: handle 802.11 TSPEC/admission control
12072 * need more attributes for that (e.g. BA session requirement);
12073 * change the WMM adminssion test above to allow both then
12074 */
12075 return -EINVAL;
12076 }
12077
12078 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12079
12080 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12081 admitted_time =
12082 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12083 if (!admitted_time)
12084 return -EINVAL;
12085 }
12086
12087 wdev_lock(wdev);
12088 switch (wdev->iftype) {
12089 case NL80211_IFTYPE_STATION:
12090 case NL80211_IFTYPE_P2P_CLIENT:
12091 if (wdev->current_bss)
12092 break;
12093 err = -ENOTCONN;
12094 goto out;
12095 default:
12096 err = -EOPNOTSUPP;
12097 goto out;
12098 }
12099
12100 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12101
12102 out:
12103 wdev_unlock(wdev);
12104 return err;
12105 }
12106
12107 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12108 {
12109 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12110 struct net_device *dev = info->user_ptr[1];
12111 struct wireless_dev *wdev = dev->ieee80211_ptr;
12112 const u8 *peer;
12113 u8 tsid;
12114 int err;
12115
12116 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12117 return -EINVAL;
12118
12119 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12120 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12121
12122 wdev_lock(wdev);
12123 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12124 wdev_unlock(wdev);
12125
12126 return err;
12127 }
12128
12129 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12130 struct genl_info *info)
12131 {
12132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12133 struct net_device *dev = info->user_ptr[1];
12134 struct wireless_dev *wdev = dev->ieee80211_ptr;
12135 struct cfg80211_chan_def chandef = {};
12136 const u8 *addr;
12137 u8 oper_class;
12138 int err;
12139
12140 if (!rdev->ops->tdls_channel_switch ||
12141 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12142 return -EOPNOTSUPP;
12143
12144 switch (dev->ieee80211_ptr->iftype) {
12145 case NL80211_IFTYPE_STATION:
12146 case NL80211_IFTYPE_P2P_CLIENT:
12147 break;
12148 default:
12149 return -EOPNOTSUPP;
12150 }
12151
12152 if (!info->attrs[NL80211_ATTR_MAC] ||
12153 !info->attrs[NL80211_ATTR_OPER_CLASS])
12154 return -EINVAL;
12155
12156 err = nl80211_parse_chandef(rdev, info, &chandef);
12157 if (err)
12158 return err;
12159
12160 /*
12161 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12162 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12163 * specification is not defined for them.
12164 */
12165 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12166 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12167 chandef.width != NL80211_CHAN_WIDTH_20)
12168 return -EINVAL;
12169
12170 /* we will be active on the TDLS link */
12171 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12172 wdev->iftype))
12173 return -EINVAL;
12174
12175 /* don't allow switching to DFS channels */
12176 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12177 return -EINVAL;
12178
12179 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12180 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12181
12182 wdev_lock(wdev);
12183 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12184 wdev_unlock(wdev);
12185
12186 return err;
12187 }
12188
12189 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12190 struct genl_info *info)
12191 {
12192 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12193 struct net_device *dev = info->user_ptr[1];
12194 struct wireless_dev *wdev = dev->ieee80211_ptr;
12195 const u8 *addr;
12196
12197 if (!rdev->ops->tdls_channel_switch ||
12198 !rdev->ops->tdls_cancel_channel_switch ||
12199 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12200 return -EOPNOTSUPP;
12201
12202 switch (dev->ieee80211_ptr->iftype) {
12203 case NL80211_IFTYPE_STATION:
12204 case NL80211_IFTYPE_P2P_CLIENT:
12205 break;
12206 default:
12207 return -EOPNOTSUPP;
12208 }
12209
12210 if (!info->attrs[NL80211_ATTR_MAC])
12211 return -EINVAL;
12212
12213 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12214
12215 wdev_lock(wdev);
12216 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12217 wdev_unlock(wdev);
12218
12219 return 0;
12220 }
12221
12222 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12223 struct genl_info *info)
12224 {
12225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12226 struct net_device *dev = info->user_ptr[1];
12227 struct wireless_dev *wdev = dev->ieee80211_ptr;
12228 const struct nlattr *nla;
12229 bool enabled;
12230
12231 if (!rdev->ops->set_multicast_to_unicast)
12232 return -EOPNOTSUPP;
12233
12234 if (wdev->iftype != NL80211_IFTYPE_AP &&
12235 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12236 return -EOPNOTSUPP;
12237
12238 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12239 enabled = nla_get_flag(nla);
12240
12241 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12242 }
12243
12244 #define NL80211_FLAG_NEED_WIPHY 0x01
12245 #define NL80211_FLAG_NEED_NETDEV 0x02
12246 #define NL80211_FLAG_NEED_RTNL 0x04
12247 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12248 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12249 NL80211_FLAG_CHECK_NETDEV_UP)
12250 #define NL80211_FLAG_NEED_WDEV 0x10
12251 /* If a netdev is associated, it must be UP, P2P must be started */
12252 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12253 NL80211_FLAG_CHECK_NETDEV_UP)
12254 #define NL80211_FLAG_CLEAR_SKB 0x20
12255
12256 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12257 struct genl_info *info)
12258 {
12259 struct cfg80211_registered_device *rdev;
12260 struct wireless_dev *wdev;
12261 struct net_device *dev;
12262 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12263
12264 if (rtnl)
12265 rtnl_lock();
12266
12267 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12268 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12269 if (IS_ERR(rdev)) {
12270 if (rtnl)
12271 rtnl_unlock();
12272 return PTR_ERR(rdev);
12273 }
12274 info->user_ptr[0] = rdev;
12275 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12276 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12277 ASSERT_RTNL();
12278
12279 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12280 info->attrs);
12281 if (IS_ERR(wdev)) {
12282 if (rtnl)
12283 rtnl_unlock();
12284 return PTR_ERR(wdev);
12285 }
12286
12287 dev = wdev->netdev;
12288 rdev = wiphy_to_rdev(wdev->wiphy);
12289
12290 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12291 if (!dev) {
12292 if (rtnl)
12293 rtnl_unlock();
12294 return -EINVAL;
12295 }
12296
12297 info->user_ptr[1] = dev;
12298 } else {
12299 info->user_ptr[1] = wdev;
12300 }
12301
12302 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12303 !wdev_running(wdev)) {
12304 if (rtnl)
12305 rtnl_unlock();
12306 return -ENETDOWN;
12307 }
12308
12309 if (dev)
12310 dev_hold(dev);
12311
12312 info->user_ptr[0] = rdev;
12313 }
12314
12315 return 0;
12316 }
12317
12318 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12319 struct genl_info *info)
12320 {
12321 if (info->user_ptr[1]) {
12322 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12323 struct wireless_dev *wdev = info->user_ptr[1];
12324
12325 if (wdev->netdev)
12326 dev_put(wdev->netdev);
12327 } else {
12328 dev_put(info->user_ptr[1]);
12329 }
12330 }
12331
12332 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12333 rtnl_unlock();
12334
12335 /* If needed, clear the netlink message payload from the SKB
12336 * as it might contain key data that shouldn't stick around on
12337 * the heap after the SKB is freed. The netlink message header
12338 * is still needed for further processing, so leave it intact.
12339 */
12340 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12341 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12342
12343 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12344 }
12345 }
12346
12347 static const struct genl_ops nl80211_ops[] = {
12348 {
12349 .cmd = NL80211_CMD_GET_WIPHY,
12350 .doit = nl80211_get_wiphy,
12351 .dumpit = nl80211_dump_wiphy,
12352 .done = nl80211_dump_wiphy_done,
12353 .policy = nl80211_policy,
12354 /* can be retrieved by unprivileged users */
12355 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12356 NL80211_FLAG_NEED_RTNL,
12357 },
12358 {
12359 .cmd = NL80211_CMD_SET_WIPHY,
12360 .doit = nl80211_set_wiphy,
12361 .policy = nl80211_policy,
12362 .flags = GENL_UNS_ADMIN_PERM,
12363 .internal_flags = NL80211_FLAG_NEED_RTNL,
12364 },
12365 {
12366 .cmd = NL80211_CMD_GET_INTERFACE,
12367 .doit = nl80211_get_interface,
12368 .dumpit = nl80211_dump_interface,
12369 .policy = nl80211_policy,
12370 /* can be retrieved by unprivileged users */
12371 .internal_flags = NL80211_FLAG_NEED_WDEV |
12372 NL80211_FLAG_NEED_RTNL,
12373 },
12374 {
12375 .cmd = NL80211_CMD_SET_INTERFACE,
12376 .doit = nl80211_set_interface,
12377 .policy = nl80211_policy,
12378 .flags = GENL_UNS_ADMIN_PERM,
12379 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12380 NL80211_FLAG_NEED_RTNL,
12381 },
12382 {
12383 .cmd = NL80211_CMD_NEW_INTERFACE,
12384 .doit = nl80211_new_interface,
12385 .policy = nl80211_policy,
12386 .flags = GENL_UNS_ADMIN_PERM,
12387 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12388 NL80211_FLAG_NEED_RTNL,
12389 },
12390 {
12391 .cmd = NL80211_CMD_DEL_INTERFACE,
12392 .doit = nl80211_del_interface,
12393 .policy = nl80211_policy,
12394 .flags = GENL_UNS_ADMIN_PERM,
12395 .internal_flags = NL80211_FLAG_NEED_WDEV |
12396 NL80211_FLAG_NEED_RTNL,
12397 },
12398 {
12399 .cmd = NL80211_CMD_GET_KEY,
12400 .doit = nl80211_get_key,
12401 .policy = nl80211_policy,
12402 .flags = GENL_UNS_ADMIN_PERM,
12403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12404 NL80211_FLAG_NEED_RTNL,
12405 },
12406 {
12407 .cmd = NL80211_CMD_SET_KEY,
12408 .doit = nl80211_set_key,
12409 .policy = nl80211_policy,
12410 .flags = GENL_UNS_ADMIN_PERM,
12411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12412 NL80211_FLAG_NEED_RTNL |
12413 NL80211_FLAG_CLEAR_SKB,
12414 },
12415 {
12416 .cmd = NL80211_CMD_NEW_KEY,
12417 .doit = nl80211_new_key,
12418 .policy = nl80211_policy,
12419 .flags = GENL_UNS_ADMIN_PERM,
12420 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12421 NL80211_FLAG_NEED_RTNL |
12422 NL80211_FLAG_CLEAR_SKB,
12423 },
12424 {
12425 .cmd = NL80211_CMD_DEL_KEY,
12426 .doit = nl80211_del_key,
12427 .policy = nl80211_policy,
12428 .flags = GENL_UNS_ADMIN_PERM,
12429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12430 NL80211_FLAG_NEED_RTNL,
12431 },
12432 {
12433 .cmd = NL80211_CMD_SET_BEACON,
12434 .policy = nl80211_policy,
12435 .flags = GENL_UNS_ADMIN_PERM,
12436 .doit = nl80211_set_beacon,
12437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12438 NL80211_FLAG_NEED_RTNL,
12439 },
12440 {
12441 .cmd = NL80211_CMD_START_AP,
12442 .policy = nl80211_policy,
12443 .flags = GENL_UNS_ADMIN_PERM,
12444 .doit = nl80211_start_ap,
12445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12446 NL80211_FLAG_NEED_RTNL,
12447 },
12448 {
12449 .cmd = NL80211_CMD_STOP_AP,
12450 .policy = nl80211_policy,
12451 .flags = GENL_UNS_ADMIN_PERM,
12452 .doit = nl80211_stop_ap,
12453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12454 NL80211_FLAG_NEED_RTNL,
12455 },
12456 {
12457 .cmd = NL80211_CMD_GET_STATION,
12458 .doit = nl80211_get_station,
12459 .dumpit = nl80211_dump_station,
12460 .policy = nl80211_policy,
12461 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12462 NL80211_FLAG_NEED_RTNL,
12463 },
12464 {
12465 .cmd = NL80211_CMD_SET_STATION,
12466 .doit = nl80211_set_station,
12467 .policy = nl80211_policy,
12468 .flags = GENL_UNS_ADMIN_PERM,
12469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12470 NL80211_FLAG_NEED_RTNL,
12471 },
12472 {
12473 .cmd = NL80211_CMD_NEW_STATION,
12474 .doit = nl80211_new_station,
12475 .policy = nl80211_policy,
12476 .flags = GENL_UNS_ADMIN_PERM,
12477 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12478 NL80211_FLAG_NEED_RTNL,
12479 },
12480 {
12481 .cmd = NL80211_CMD_DEL_STATION,
12482 .doit = nl80211_del_station,
12483 .policy = nl80211_policy,
12484 .flags = GENL_UNS_ADMIN_PERM,
12485 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12486 NL80211_FLAG_NEED_RTNL,
12487 },
12488 {
12489 .cmd = NL80211_CMD_GET_MPATH,
12490 .doit = nl80211_get_mpath,
12491 .dumpit = nl80211_dump_mpath,
12492 .policy = nl80211_policy,
12493 .flags = GENL_UNS_ADMIN_PERM,
12494 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12495 NL80211_FLAG_NEED_RTNL,
12496 },
12497 {
12498 .cmd = NL80211_CMD_GET_MPP,
12499 .doit = nl80211_get_mpp,
12500 .dumpit = nl80211_dump_mpp,
12501 .policy = nl80211_policy,
12502 .flags = GENL_UNS_ADMIN_PERM,
12503 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12504 NL80211_FLAG_NEED_RTNL,
12505 },
12506 {
12507 .cmd = NL80211_CMD_SET_MPATH,
12508 .doit = nl80211_set_mpath,
12509 .policy = nl80211_policy,
12510 .flags = GENL_UNS_ADMIN_PERM,
12511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12512 NL80211_FLAG_NEED_RTNL,
12513 },
12514 {
12515 .cmd = NL80211_CMD_NEW_MPATH,
12516 .doit = nl80211_new_mpath,
12517 .policy = nl80211_policy,
12518 .flags = GENL_UNS_ADMIN_PERM,
12519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12520 NL80211_FLAG_NEED_RTNL,
12521 },
12522 {
12523 .cmd = NL80211_CMD_DEL_MPATH,
12524 .doit = nl80211_del_mpath,
12525 .policy = nl80211_policy,
12526 .flags = GENL_UNS_ADMIN_PERM,
12527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12528 NL80211_FLAG_NEED_RTNL,
12529 },
12530 {
12531 .cmd = NL80211_CMD_SET_BSS,
12532 .doit = nl80211_set_bss,
12533 .policy = nl80211_policy,
12534 .flags = GENL_UNS_ADMIN_PERM,
12535 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12536 NL80211_FLAG_NEED_RTNL,
12537 },
12538 {
12539 .cmd = NL80211_CMD_GET_REG,
12540 .doit = nl80211_get_reg_do,
12541 .dumpit = nl80211_get_reg_dump,
12542 .policy = nl80211_policy,
12543 .internal_flags = NL80211_FLAG_NEED_RTNL,
12544 /* can be retrieved by unprivileged users */
12545 },
12546 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12547 {
12548 .cmd = NL80211_CMD_SET_REG,
12549 .doit = nl80211_set_reg,
12550 .policy = nl80211_policy,
12551 .flags = GENL_ADMIN_PERM,
12552 .internal_flags = NL80211_FLAG_NEED_RTNL,
12553 },
12554 #endif
12555 {
12556 .cmd = NL80211_CMD_REQ_SET_REG,
12557 .doit = nl80211_req_set_reg,
12558 .policy = nl80211_policy,
12559 .flags = GENL_ADMIN_PERM,
12560 },
12561 {
12562 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12563 .doit = nl80211_get_mesh_config,
12564 .policy = nl80211_policy,
12565 /* can be retrieved by unprivileged users */
12566 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12567 NL80211_FLAG_NEED_RTNL,
12568 },
12569 {
12570 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12571 .doit = nl80211_update_mesh_config,
12572 .policy = nl80211_policy,
12573 .flags = GENL_UNS_ADMIN_PERM,
12574 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12575 NL80211_FLAG_NEED_RTNL,
12576 },
12577 {
12578 .cmd = NL80211_CMD_TRIGGER_SCAN,
12579 .doit = nl80211_trigger_scan,
12580 .policy = nl80211_policy,
12581 .flags = GENL_UNS_ADMIN_PERM,
12582 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12583 NL80211_FLAG_NEED_RTNL,
12584 },
12585 {
12586 .cmd = NL80211_CMD_ABORT_SCAN,
12587 .doit = nl80211_abort_scan,
12588 .policy = nl80211_policy,
12589 .flags = GENL_UNS_ADMIN_PERM,
12590 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12591 NL80211_FLAG_NEED_RTNL,
12592 },
12593 {
12594 .cmd = NL80211_CMD_GET_SCAN,
12595 .policy = nl80211_policy,
12596 .dumpit = nl80211_dump_scan,
12597 },
12598 {
12599 .cmd = NL80211_CMD_START_SCHED_SCAN,
12600 .doit = nl80211_start_sched_scan,
12601 .policy = nl80211_policy,
12602 .flags = GENL_UNS_ADMIN_PERM,
12603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12604 NL80211_FLAG_NEED_RTNL,
12605 },
12606 {
12607 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12608 .doit = nl80211_stop_sched_scan,
12609 .policy = nl80211_policy,
12610 .flags = GENL_UNS_ADMIN_PERM,
12611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12612 NL80211_FLAG_NEED_RTNL,
12613 },
12614 {
12615 .cmd = NL80211_CMD_AUTHENTICATE,
12616 .doit = nl80211_authenticate,
12617 .policy = nl80211_policy,
12618 .flags = GENL_UNS_ADMIN_PERM,
12619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12620 NL80211_FLAG_NEED_RTNL |
12621 NL80211_FLAG_CLEAR_SKB,
12622 },
12623 {
12624 .cmd = NL80211_CMD_ASSOCIATE,
12625 .doit = nl80211_associate,
12626 .policy = nl80211_policy,
12627 .flags = GENL_UNS_ADMIN_PERM,
12628 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12629 NL80211_FLAG_NEED_RTNL,
12630 },
12631 {
12632 .cmd = NL80211_CMD_DEAUTHENTICATE,
12633 .doit = nl80211_deauthenticate,
12634 .policy = nl80211_policy,
12635 .flags = GENL_UNS_ADMIN_PERM,
12636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12637 NL80211_FLAG_NEED_RTNL,
12638 },
12639 {
12640 .cmd = NL80211_CMD_DISASSOCIATE,
12641 .doit = nl80211_disassociate,
12642 .policy = nl80211_policy,
12643 .flags = GENL_UNS_ADMIN_PERM,
12644 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12645 NL80211_FLAG_NEED_RTNL,
12646 },
12647 {
12648 .cmd = NL80211_CMD_JOIN_IBSS,
12649 .doit = nl80211_join_ibss,
12650 .policy = nl80211_policy,
12651 .flags = GENL_UNS_ADMIN_PERM,
12652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12653 NL80211_FLAG_NEED_RTNL,
12654 },
12655 {
12656 .cmd = NL80211_CMD_LEAVE_IBSS,
12657 .doit = nl80211_leave_ibss,
12658 .policy = nl80211_policy,
12659 .flags = GENL_UNS_ADMIN_PERM,
12660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12661 NL80211_FLAG_NEED_RTNL,
12662 },
12663 #ifdef CONFIG_NL80211_TESTMODE
12664 {
12665 .cmd = NL80211_CMD_TESTMODE,
12666 .doit = nl80211_testmode_do,
12667 .dumpit = nl80211_testmode_dump,
12668 .policy = nl80211_policy,
12669 .flags = GENL_UNS_ADMIN_PERM,
12670 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12671 NL80211_FLAG_NEED_RTNL,
12672 },
12673 #endif
12674 {
12675 .cmd = NL80211_CMD_CONNECT,
12676 .doit = nl80211_connect,
12677 .policy = nl80211_policy,
12678 .flags = GENL_UNS_ADMIN_PERM,
12679 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12680 NL80211_FLAG_NEED_RTNL,
12681 },
12682 {
12683 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12684 .doit = nl80211_update_connect_params,
12685 .policy = nl80211_policy,
12686 .flags = GENL_ADMIN_PERM,
12687 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12688 NL80211_FLAG_NEED_RTNL,
12689 },
12690 {
12691 .cmd = NL80211_CMD_DISCONNECT,
12692 .doit = nl80211_disconnect,
12693 .policy = nl80211_policy,
12694 .flags = GENL_UNS_ADMIN_PERM,
12695 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12696 NL80211_FLAG_NEED_RTNL,
12697 },
12698 {
12699 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12700 .doit = nl80211_wiphy_netns,
12701 .policy = nl80211_policy,
12702 .flags = GENL_UNS_ADMIN_PERM,
12703 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12704 NL80211_FLAG_NEED_RTNL,
12705 },
12706 {
12707 .cmd = NL80211_CMD_GET_SURVEY,
12708 .policy = nl80211_policy,
12709 .dumpit = nl80211_dump_survey,
12710 },
12711 {
12712 .cmd = NL80211_CMD_SET_PMKSA,
12713 .doit = nl80211_setdel_pmksa,
12714 .policy = nl80211_policy,
12715 .flags = GENL_UNS_ADMIN_PERM,
12716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12717 NL80211_FLAG_NEED_RTNL,
12718 },
12719 {
12720 .cmd = NL80211_CMD_DEL_PMKSA,
12721 .doit = nl80211_setdel_pmksa,
12722 .policy = nl80211_policy,
12723 .flags = GENL_UNS_ADMIN_PERM,
12724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12725 NL80211_FLAG_NEED_RTNL,
12726 },
12727 {
12728 .cmd = NL80211_CMD_FLUSH_PMKSA,
12729 .doit = nl80211_flush_pmksa,
12730 .policy = nl80211_policy,
12731 .flags = GENL_UNS_ADMIN_PERM,
12732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12733 NL80211_FLAG_NEED_RTNL,
12734 },
12735 {
12736 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12737 .doit = nl80211_remain_on_channel,
12738 .policy = nl80211_policy,
12739 .flags = GENL_UNS_ADMIN_PERM,
12740 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12741 NL80211_FLAG_NEED_RTNL,
12742 },
12743 {
12744 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12745 .doit = nl80211_cancel_remain_on_channel,
12746 .policy = nl80211_policy,
12747 .flags = GENL_UNS_ADMIN_PERM,
12748 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12749 NL80211_FLAG_NEED_RTNL,
12750 },
12751 {
12752 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12753 .doit = nl80211_set_tx_bitrate_mask,
12754 .policy = nl80211_policy,
12755 .flags = GENL_UNS_ADMIN_PERM,
12756 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12757 NL80211_FLAG_NEED_RTNL,
12758 },
12759 {
12760 .cmd = NL80211_CMD_REGISTER_FRAME,
12761 .doit = nl80211_register_mgmt,
12762 .policy = nl80211_policy,
12763 .flags = GENL_UNS_ADMIN_PERM,
12764 .internal_flags = NL80211_FLAG_NEED_WDEV |
12765 NL80211_FLAG_NEED_RTNL,
12766 },
12767 {
12768 .cmd = NL80211_CMD_FRAME,
12769 .doit = nl80211_tx_mgmt,
12770 .policy = nl80211_policy,
12771 .flags = GENL_UNS_ADMIN_PERM,
12772 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12773 NL80211_FLAG_NEED_RTNL,
12774 },
12775 {
12776 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12777 .doit = nl80211_tx_mgmt_cancel_wait,
12778 .policy = nl80211_policy,
12779 .flags = GENL_UNS_ADMIN_PERM,
12780 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12781 NL80211_FLAG_NEED_RTNL,
12782 },
12783 {
12784 .cmd = NL80211_CMD_SET_POWER_SAVE,
12785 .doit = nl80211_set_power_save,
12786 .policy = nl80211_policy,
12787 .flags = GENL_UNS_ADMIN_PERM,
12788 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12789 NL80211_FLAG_NEED_RTNL,
12790 },
12791 {
12792 .cmd = NL80211_CMD_GET_POWER_SAVE,
12793 .doit = nl80211_get_power_save,
12794 .policy = nl80211_policy,
12795 /* can be retrieved by unprivileged users */
12796 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12797 NL80211_FLAG_NEED_RTNL,
12798 },
12799 {
12800 .cmd = NL80211_CMD_SET_CQM,
12801 .doit = nl80211_set_cqm,
12802 .policy = nl80211_policy,
12803 .flags = GENL_UNS_ADMIN_PERM,
12804 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12805 NL80211_FLAG_NEED_RTNL,
12806 },
12807 {
12808 .cmd = NL80211_CMD_SET_CHANNEL,
12809 .doit = nl80211_set_channel,
12810 .policy = nl80211_policy,
12811 .flags = GENL_UNS_ADMIN_PERM,
12812 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12813 NL80211_FLAG_NEED_RTNL,
12814 },
12815 {
12816 .cmd = NL80211_CMD_SET_WDS_PEER,
12817 .doit = nl80211_set_wds_peer,
12818 .policy = nl80211_policy,
12819 .flags = GENL_UNS_ADMIN_PERM,
12820 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12821 NL80211_FLAG_NEED_RTNL,
12822 },
12823 {
12824 .cmd = NL80211_CMD_JOIN_MESH,
12825 .doit = nl80211_join_mesh,
12826 .policy = nl80211_policy,
12827 .flags = GENL_UNS_ADMIN_PERM,
12828 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12829 NL80211_FLAG_NEED_RTNL,
12830 },
12831 {
12832 .cmd = NL80211_CMD_LEAVE_MESH,
12833 .doit = nl80211_leave_mesh,
12834 .policy = nl80211_policy,
12835 .flags = GENL_UNS_ADMIN_PERM,
12836 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12837 NL80211_FLAG_NEED_RTNL,
12838 },
12839 {
12840 .cmd = NL80211_CMD_JOIN_OCB,
12841 .doit = nl80211_join_ocb,
12842 .policy = nl80211_policy,
12843 .flags = GENL_UNS_ADMIN_PERM,
12844 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12845 NL80211_FLAG_NEED_RTNL,
12846 },
12847 {
12848 .cmd = NL80211_CMD_LEAVE_OCB,
12849 .doit = nl80211_leave_ocb,
12850 .policy = nl80211_policy,
12851 .flags = GENL_UNS_ADMIN_PERM,
12852 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12853 NL80211_FLAG_NEED_RTNL,
12854 },
12855 #ifdef CONFIG_PM
12856 {
12857 .cmd = NL80211_CMD_GET_WOWLAN,
12858 .doit = nl80211_get_wowlan,
12859 .policy = nl80211_policy,
12860 /* can be retrieved by unprivileged users */
12861 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12862 NL80211_FLAG_NEED_RTNL,
12863 },
12864 {
12865 .cmd = NL80211_CMD_SET_WOWLAN,
12866 .doit = nl80211_set_wowlan,
12867 .policy = nl80211_policy,
12868 .flags = GENL_UNS_ADMIN_PERM,
12869 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12870 NL80211_FLAG_NEED_RTNL,
12871 },
12872 #endif
12873 {
12874 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12875 .doit = nl80211_set_rekey_data,
12876 .policy = nl80211_policy,
12877 .flags = GENL_UNS_ADMIN_PERM,
12878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12879 NL80211_FLAG_NEED_RTNL |
12880 NL80211_FLAG_CLEAR_SKB,
12881 },
12882 {
12883 .cmd = NL80211_CMD_TDLS_MGMT,
12884 .doit = nl80211_tdls_mgmt,
12885 .policy = nl80211_policy,
12886 .flags = GENL_UNS_ADMIN_PERM,
12887 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12888 NL80211_FLAG_NEED_RTNL,
12889 },
12890 {
12891 .cmd = NL80211_CMD_TDLS_OPER,
12892 .doit = nl80211_tdls_oper,
12893 .policy = nl80211_policy,
12894 .flags = GENL_UNS_ADMIN_PERM,
12895 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12896 NL80211_FLAG_NEED_RTNL,
12897 },
12898 {
12899 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12900 .doit = nl80211_register_unexpected_frame,
12901 .policy = nl80211_policy,
12902 .flags = GENL_UNS_ADMIN_PERM,
12903 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12904 NL80211_FLAG_NEED_RTNL,
12905 },
12906 {
12907 .cmd = NL80211_CMD_PROBE_CLIENT,
12908 .doit = nl80211_probe_client,
12909 .policy = nl80211_policy,
12910 .flags = GENL_UNS_ADMIN_PERM,
12911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12912 NL80211_FLAG_NEED_RTNL,
12913 },
12914 {
12915 .cmd = NL80211_CMD_REGISTER_BEACONS,
12916 .doit = nl80211_register_beacons,
12917 .policy = nl80211_policy,
12918 .flags = GENL_UNS_ADMIN_PERM,
12919 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12920 NL80211_FLAG_NEED_RTNL,
12921 },
12922 {
12923 .cmd = NL80211_CMD_SET_NOACK_MAP,
12924 .doit = nl80211_set_noack_map,
12925 .policy = nl80211_policy,
12926 .flags = GENL_UNS_ADMIN_PERM,
12927 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12928 NL80211_FLAG_NEED_RTNL,
12929 },
12930 {
12931 .cmd = NL80211_CMD_START_P2P_DEVICE,
12932 .doit = nl80211_start_p2p_device,
12933 .policy = nl80211_policy,
12934 .flags = GENL_UNS_ADMIN_PERM,
12935 .internal_flags = NL80211_FLAG_NEED_WDEV |
12936 NL80211_FLAG_NEED_RTNL,
12937 },
12938 {
12939 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12940 .doit = nl80211_stop_p2p_device,
12941 .policy = nl80211_policy,
12942 .flags = GENL_UNS_ADMIN_PERM,
12943 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12944 NL80211_FLAG_NEED_RTNL,
12945 },
12946 {
12947 .cmd = NL80211_CMD_START_NAN,
12948 .doit = nl80211_start_nan,
12949 .policy = nl80211_policy,
12950 .flags = GENL_ADMIN_PERM,
12951 .internal_flags = NL80211_FLAG_NEED_WDEV |
12952 NL80211_FLAG_NEED_RTNL,
12953 },
12954 {
12955 .cmd = NL80211_CMD_STOP_NAN,
12956 .doit = nl80211_stop_nan,
12957 .policy = nl80211_policy,
12958 .flags = GENL_ADMIN_PERM,
12959 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12960 NL80211_FLAG_NEED_RTNL,
12961 },
12962 {
12963 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12964 .doit = nl80211_nan_add_func,
12965 .policy = nl80211_policy,
12966 .flags = GENL_ADMIN_PERM,
12967 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12968 NL80211_FLAG_NEED_RTNL,
12969 },
12970 {
12971 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12972 .doit = nl80211_nan_del_func,
12973 .policy = nl80211_policy,
12974 .flags = GENL_ADMIN_PERM,
12975 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12976 NL80211_FLAG_NEED_RTNL,
12977 },
12978 {
12979 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12980 .doit = nl80211_nan_change_config,
12981 .policy = nl80211_policy,
12982 .flags = GENL_ADMIN_PERM,
12983 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12984 NL80211_FLAG_NEED_RTNL,
12985 },
12986 {
12987 .cmd = NL80211_CMD_SET_MCAST_RATE,
12988 .doit = nl80211_set_mcast_rate,
12989 .policy = nl80211_policy,
12990 .flags = GENL_UNS_ADMIN_PERM,
12991 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12992 NL80211_FLAG_NEED_RTNL,
12993 },
12994 {
12995 .cmd = NL80211_CMD_SET_MAC_ACL,
12996 .doit = nl80211_set_mac_acl,
12997 .policy = nl80211_policy,
12998 .flags = GENL_UNS_ADMIN_PERM,
12999 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13000 NL80211_FLAG_NEED_RTNL,
13001 },
13002 {
13003 .cmd = NL80211_CMD_RADAR_DETECT,
13004 .doit = nl80211_start_radar_detection,
13005 .policy = nl80211_policy,
13006 .flags = GENL_UNS_ADMIN_PERM,
13007 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13008 NL80211_FLAG_NEED_RTNL,
13009 },
13010 {
13011 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13012 .doit = nl80211_get_protocol_features,
13013 .policy = nl80211_policy,
13014 },
13015 {
13016 .cmd = NL80211_CMD_UPDATE_FT_IES,
13017 .doit = nl80211_update_ft_ies,
13018 .policy = nl80211_policy,
13019 .flags = GENL_UNS_ADMIN_PERM,
13020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13021 NL80211_FLAG_NEED_RTNL,
13022 },
13023 {
13024 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13025 .doit = nl80211_crit_protocol_start,
13026 .policy = nl80211_policy,
13027 .flags = GENL_UNS_ADMIN_PERM,
13028 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13029 NL80211_FLAG_NEED_RTNL,
13030 },
13031 {
13032 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13033 .doit = nl80211_crit_protocol_stop,
13034 .policy = nl80211_policy,
13035 .flags = GENL_UNS_ADMIN_PERM,
13036 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13037 NL80211_FLAG_NEED_RTNL,
13038 },
13039 {
13040 .cmd = NL80211_CMD_GET_COALESCE,
13041 .doit = nl80211_get_coalesce,
13042 .policy = nl80211_policy,
13043 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13044 NL80211_FLAG_NEED_RTNL,
13045 },
13046 {
13047 .cmd = NL80211_CMD_SET_COALESCE,
13048 .doit = nl80211_set_coalesce,
13049 .policy = nl80211_policy,
13050 .flags = GENL_UNS_ADMIN_PERM,
13051 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13052 NL80211_FLAG_NEED_RTNL,
13053 },
13054 {
13055 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13056 .doit = nl80211_channel_switch,
13057 .policy = nl80211_policy,
13058 .flags = GENL_UNS_ADMIN_PERM,
13059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13060 NL80211_FLAG_NEED_RTNL,
13061 },
13062 {
13063 .cmd = NL80211_CMD_VENDOR,
13064 .doit = nl80211_vendor_cmd,
13065 .dumpit = nl80211_vendor_cmd_dump,
13066 .policy = nl80211_policy,
13067 .flags = GENL_UNS_ADMIN_PERM,
13068 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13069 NL80211_FLAG_NEED_RTNL,
13070 },
13071 {
13072 .cmd = NL80211_CMD_SET_QOS_MAP,
13073 .doit = nl80211_set_qos_map,
13074 .policy = nl80211_policy,
13075 .flags = GENL_UNS_ADMIN_PERM,
13076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13077 NL80211_FLAG_NEED_RTNL,
13078 },
13079 {
13080 .cmd = NL80211_CMD_ADD_TX_TS,
13081 .doit = nl80211_add_tx_ts,
13082 .policy = nl80211_policy,
13083 .flags = GENL_UNS_ADMIN_PERM,
13084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13085 NL80211_FLAG_NEED_RTNL,
13086 },
13087 {
13088 .cmd = NL80211_CMD_DEL_TX_TS,
13089 .doit = nl80211_del_tx_ts,
13090 .policy = nl80211_policy,
13091 .flags = GENL_UNS_ADMIN_PERM,
13092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13093 NL80211_FLAG_NEED_RTNL,
13094 },
13095 {
13096 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13097 .doit = nl80211_tdls_channel_switch,
13098 .policy = nl80211_policy,
13099 .flags = GENL_UNS_ADMIN_PERM,
13100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13101 NL80211_FLAG_NEED_RTNL,
13102 },
13103 {
13104 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13105 .doit = nl80211_tdls_cancel_channel_switch,
13106 .policy = nl80211_policy,
13107 .flags = GENL_UNS_ADMIN_PERM,
13108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13109 NL80211_FLAG_NEED_RTNL,
13110 },
13111 {
13112 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13113 .doit = nl80211_set_multicast_to_unicast,
13114 .policy = nl80211_policy,
13115 .flags = GENL_UNS_ADMIN_PERM,
13116 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13117 NL80211_FLAG_NEED_RTNL,
13118 },
13119 };
13120
13121 static struct genl_family nl80211_fam __ro_after_init = {
13122 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13123 .hdrsize = 0, /* no private header */
13124 .version = 1, /* no particular meaning now */
13125 .maxattr = NL80211_ATTR_MAX,
13126 .netnsok = true,
13127 .pre_doit = nl80211_pre_doit,
13128 .post_doit = nl80211_post_doit,
13129 .module = THIS_MODULE,
13130 .ops = nl80211_ops,
13131 .n_ops = ARRAY_SIZE(nl80211_ops),
13132 .mcgrps = nl80211_mcgrps,
13133 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13134 };
13135
13136 /* notification functions */
13137
13138 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13139 enum nl80211_commands cmd)
13140 {
13141 struct sk_buff *msg;
13142 struct nl80211_dump_wiphy_state state = {};
13143
13144 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13145 cmd != NL80211_CMD_DEL_WIPHY);
13146
13147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13148 if (!msg)
13149 return;
13150
13151 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13152 nlmsg_free(msg);
13153 return;
13154 }
13155
13156 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13157 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13158 }
13159
13160 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13161 struct wireless_dev *wdev,
13162 enum nl80211_commands cmd)
13163 {
13164 struct sk_buff *msg;
13165
13166 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13167 cmd != NL80211_CMD_DEL_INTERFACE);
13168
13169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13170 if (!msg)
13171 return;
13172
13173 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13174 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13175 nlmsg_free(msg);
13176 return;
13177 }
13178
13179 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13180 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13181 }
13182
13183 static int nl80211_add_scan_req(struct sk_buff *msg,
13184 struct cfg80211_registered_device *rdev)
13185 {
13186 struct cfg80211_scan_request *req = rdev->scan_req;
13187 struct nlattr *nest;
13188 int i;
13189
13190 if (WARN_ON(!req))
13191 return 0;
13192
13193 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13194 if (!nest)
13195 goto nla_put_failure;
13196 for (i = 0; i < req->n_ssids; i++) {
13197 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13198 goto nla_put_failure;
13199 }
13200 nla_nest_end(msg, nest);
13201
13202 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13203 if (!nest)
13204 goto nla_put_failure;
13205 for (i = 0; i < req->n_channels; i++) {
13206 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13207 goto nla_put_failure;
13208 }
13209 nla_nest_end(msg, nest);
13210
13211 if (req->ie &&
13212 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13213 goto nla_put_failure;
13214
13215 if (req->flags &&
13216 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13217 goto nla_put_failure;
13218
13219 if (req->info.scan_start_tsf &&
13220 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13221 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13222 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13223 req->info.tsf_bssid)))
13224 goto nla_put_failure;
13225
13226 return 0;
13227 nla_put_failure:
13228 return -ENOBUFS;
13229 }
13230
13231 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13232 struct cfg80211_registered_device *rdev,
13233 struct wireless_dev *wdev,
13234 u32 portid, u32 seq, int flags,
13235 u32 cmd)
13236 {
13237 void *hdr;
13238
13239 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13240 if (!hdr)
13241 return -1;
13242
13243 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13244 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13245 wdev->netdev->ifindex)) ||
13246 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13247 NL80211_ATTR_PAD))
13248 goto nla_put_failure;
13249
13250 /* ignore errors and send incomplete event anyway */
13251 nl80211_add_scan_req(msg, rdev);
13252
13253 genlmsg_end(msg, hdr);
13254 return 0;
13255
13256 nla_put_failure:
13257 genlmsg_cancel(msg, hdr);
13258 return -EMSGSIZE;
13259 }
13260
13261 static int
13262 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13263 struct cfg80211_sched_scan_request *req, u32 cmd)
13264 {
13265 void *hdr;
13266
13267 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13268 if (!hdr)
13269 return -1;
13270
13271 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13272 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13273 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13274 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13275 NL80211_ATTR_PAD))
13276 goto nla_put_failure;
13277
13278 genlmsg_end(msg, hdr);
13279 return 0;
13280
13281 nla_put_failure:
13282 genlmsg_cancel(msg, hdr);
13283 return -EMSGSIZE;
13284 }
13285
13286 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13287 struct wireless_dev *wdev)
13288 {
13289 struct sk_buff *msg;
13290
13291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13292 if (!msg)
13293 return;
13294
13295 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13296 NL80211_CMD_TRIGGER_SCAN) < 0) {
13297 nlmsg_free(msg);
13298 return;
13299 }
13300
13301 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13302 NL80211_MCGRP_SCAN, GFP_KERNEL);
13303 }
13304
13305 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13306 struct wireless_dev *wdev, bool aborted)
13307 {
13308 struct sk_buff *msg;
13309
13310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13311 if (!msg)
13312 return NULL;
13313
13314 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13315 aborted ? NL80211_CMD_SCAN_ABORTED :
13316 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13317 nlmsg_free(msg);
13318 return NULL;
13319 }
13320
13321 return msg;
13322 }
13323
13324 /* send message created by nl80211_build_scan_msg() */
13325 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13326 struct sk_buff *msg)
13327 {
13328 if (!msg)
13329 return;
13330
13331 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13332 NL80211_MCGRP_SCAN, GFP_KERNEL);
13333 }
13334
13335 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13336 {
13337 struct sk_buff *msg;
13338
13339 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13340 if (!msg)
13341 return;
13342
13343 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13344 nlmsg_free(msg);
13345 return;
13346 }
13347
13348 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13349 NL80211_MCGRP_SCAN, GFP_KERNEL);
13350 }
13351
13352 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13353 struct regulatory_request *request)
13354 {
13355 /* Userspace can always count this one always being set */
13356 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13357 goto nla_put_failure;
13358
13359 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13360 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13361 NL80211_REGDOM_TYPE_WORLD))
13362 goto nla_put_failure;
13363 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13364 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13365 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13366 goto nla_put_failure;
13367 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13368 request->intersect) {
13369 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13370 NL80211_REGDOM_TYPE_INTERSECTION))
13371 goto nla_put_failure;
13372 } else {
13373 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13374 NL80211_REGDOM_TYPE_COUNTRY) ||
13375 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13376 request->alpha2))
13377 goto nla_put_failure;
13378 }
13379
13380 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13381 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13382
13383 if (wiphy &&
13384 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13385 goto nla_put_failure;
13386
13387 if (wiphy &&
13388 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13389 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13390 goto nla_put_failure;
13391 }
13392
13393 return true;
13394
13395 nla_put_failure:
13396 return false;
13397 }
13398
13399 /*
13400 * This can happen on global regulatory changes or device specific settings
13401 * based on custom regulatory domains.
13402 */
13403 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13404 struct regulatory_request *request)
13405 {
13406 struct sk_buff *msg;
13407 void *hdr;
13408
13409 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13410 if (!msg)
13411 return;
13412
13413 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13414 if (!hdr) {
13415 nlmsg_free(msg);
13416 return;
13417 }
13418
13419 if (nl80211_reg_change_event_fill(msg, request) == false)
13420 goto nla_put_failure;
13421
13422 genlmsg_end(msg, hdr);
13423
13424 rcu_read_lock();
13425 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13426 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13427 rcu_read_unlock();
13428
13429 return;
13430
13431 nla_put_failure:
13432 genlmsg_cancel(msg, hdr);
13433 nlmsg_free(msg);
13434 }
13435
13436 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13437 struct net_device *netdev,
13438 const u8 *buf, size_t len,
13439 enum nl80211_commands cmd, gfp_t gfp,
13440 int uapsd_queues)
13441 {
13442 struct sk_buff *msg;
13443 void *hdr;
13444
13445 msg = nlmsg_new(100 + len, gfp);
13446 if (!msg)
13447 return;
13448
13449 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13450 if (!hdr) {
13451 nlmsg_free(msg);
13452 return;
13453 }
13454
13455 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13456 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13457 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13458 goto nla_put_failure;
13459
13460 if (uapsd_queues >= 0) {
13461 struct nlattr *nla_wmm =
13462 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13463 if (!nla_wmm)
13464 goto nla_put_failure;
13465
13466 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13467 uapsd_queues))
13468 goto nla_put_failure;
13469
13470 nla_nest_end(msg, nla_wmm);
13471 }
13472
13473 genlmsg_end(msg, hdr);
13474
13475 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13476 NL80211_MCGRP_MLME, gfp);
13477 return;
13478
13479 nla_put_failure:
13480 genlmsg_cancel(msg, hdr);
13481 nlmsg_free(msg);
13482 }
13483
13484 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13485 struct net_device *netdev, const u8 *buf,
13486 size_t len, gfp_t gfp)
13487 {
13488 nl80211_send_mlme_event(rdev, netdev, buf, len,
13489 NL80211_CMD_AUTHENTICATE, gfp, -1);
13490 }
13491
13492 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13493 struct net_device *netdev, const u8 *buf,
13494 size_t len, gfp_t gfp, int uapsd_queues)
13495 {
13496 nl80211_send_mlme_event(rdev, netdev, buf, len,
13497 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13498 }
13499
13500 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13501 struct net_device *netdev, const u8 *buf,
13502 size_t len, gfp_t gfp)
13503 {
13504 nl80211_send_mlme_event(rdev, netdev, buf, len,
13505 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13506 }
13507
13508 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13509 struct net_device *netdev, const u8 *buf,
13510 size_t len, gfp_t gfp)
13511 {
13512 nl80211_send_mlme_event(rdev, netdev, buf, len,
13513 NL80211_CMD_DISASSOCIATE, gfp, -1);
13514 }
13515
13516 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13517 size_t len)
13518 {
13519 struct wireless_dev *wdev = dev->ieee80211_ptr;
13520 struct wiphy *wiphy = wdev->wiphy;
13521 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13522 const struct ieee80211_mgmt *mgmt = (void *)buf;
13523 u32 cmd;
13524
13525 if (WARN_ON(len < 2))
13526 return;
13527
13528 if (ieee80211_is_deauth(mgmt->frame_control))
13529 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13530 else
13531 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13532
13533 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13534 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13535 }
13536 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13537
13538 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13539 struct net_device *netdev, int cmd,
13540 const u8 *addr, gfp_t gfp)
13541 {
13542 struct sk_buff *msg;
13543 void *hdr;
13544
13545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13546 if (!msg)
13547 return;
13548
13549 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13550 if (!hdr) {
13551 nlmsg_free(msg);
13552 return;
13553 }
13554
13555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13556 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13557 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13558 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13559 goto nla_put_failure;
13560
13561 genlmsg_end(msg, hdr);
13562
13563 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13564 NL80211_MCGRP_MLME, gfp);
13565 return;
13566
13567 nla_put_failure:
13568 genlmsg_cancel(msg, hdr);
13569 nlmsg_free(msg);
13570 }
13571
13572 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13573 struct net_device *netdev, const u8 *addr,
13574 gfp_t gfp)
13575 {
13576 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13577 addr, gfp);
13578 }
13579
13580 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13581 struct net_device *netdev, const u8 *addr,
13582 gfp_t gfp)
13583 {
13584 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13585 addr, gfp);
13586 }
13587
13588 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13589 struct net_device *netdev,
13590 struct cfg80211_connect_resp_params *cr,
13591 gfp_t gfp)
13592 {
13593 struct sk_buff *msg;
13594 void *hdr;
13595
13596 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13597 cr->fils_kek_len + cr->pmk_len +
13598 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13599 if (!msg)
13600 return;
13601
13602 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13603 if (!hdr) {
13604 nlmsg_free(msg);
13605 return;
13606 }
13607
13608 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13609 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13610 (cr->bssid &&
13611 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13612 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13613 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13614 cr->status) ||
13615 (cr->status < 0 &&
13616 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13617 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13618 cr->timeout_reason))) ||
13619 (cr->req_ie &&
13620 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13621 (cr->resp_ie &&
13622 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13623 cr->resp_ie)) ||
13624 (cr->update_erp_next_seq_num &&
13625 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13626 cr->fils_erp_next_seq_num)) ||
13627 (cr->status == WLAN_STATUS_SUCCESS &&
13628 ((cr->fils_kek &&
13629 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13630 cr->fils_kek)) ||
13631 (cr->pmk &&
13632 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13633 (cr->pmkid &&
13634 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13635 goto nla_put_failure;
13636
13637 genlmsg_end(msg, hdr);
13638
13639 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13640 NL80211_MCGRP_MLME, gfp);
13641 return;
13642
13643 nla_put_failure:
13644 genlmsg_cancel(msg, hdr);
13645 nlmsg_free(msg);
13646 }
13647
13648 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13649 struct net_device *netdev,
13650 struct cfg80211_roam_info *info, gfp_t gfp)
13651 {
13652 struct sk_buff *msg;
13653 void *hdr;
13654 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13655
13656 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13657 if (!msg)
13658 return;
13659
13660 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13661 if (!hdr) {
13662 nlmsg_free(msg);
13663 return;
13664 }
13665
13666 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13667 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13668 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13669 (info->req_ie &&
13670 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13671 info->req_ie)) ||
13672 (info->resp_ie &&
13673 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13674 info->resp_ie)))
13675 goto nla_put_failure;
13676
13677 genlmsg_end(msg, hdr);
13678
13679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13680 NL80211_MCGRP_MLME, gfp);
13681 return;
13682
13683 nla_put_failure:
13684 genlmsg_cancel(msg, hdr);
13685 nlmsg_free(msg);
13686 }
13687
13688 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13689 struct net_device *netdev, u16 reason,
13690 const u8 *ie, size_t ie_len, bool from_ap)
13691 {
13692 struct sk_buff *msg;
13693 void *hdr;
13694
13695 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13696 if (!msg)
13697 return;
13698
13699 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13700 if (!hdr) {
13701 nlmsg_free(msg);
13702 return;
13703 }
13704
13705 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13706 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13707 (from_ap && reason &&
13708 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13709 (from_ap &&
13710 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13711 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13712 goto nla_put_failure;
13713
13714 genlmsg_end(msg, hdr);
13715
13716 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13717 NL80211_MCGRP_MLME, GFP_KERNEL);
13718 return;
13719
13720 nla_put_failure:
13721 genlmsg_cancel(msg, hdr);
13722 nlmsg_free(msg);
13723 }
13724
13725 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13726 struct net_device *netdev, const u8 *bssid,
13727 gfp_t gfp)
13728 {
13729 struct sk_buff *msg;
13730 void *hdr;
13731
13732 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13733 if (!msg)
13734 return;
13735
13736 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13737 if (!hdr) {
13738 nlmsg_free(msg);
13739 return;
13740 }
13741
13742 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13743 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13744 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13745 goto nla_put_failure;
13746
13747 genlmsg_end(msg, hdr);
13748
13749 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13750 NL80211_MCGRP_MLME, gfp);
13751 return;
13752
13753 nla_put_failure:
13754 genlmsg_cancel(msg, hdr);
13755 nlmsg_free(msg);
13756 }
13757
13758 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13759 const u8* ie, u8 ie_len, gfp_t gfp)
13760 {
13761 struct wireless_dev *wdev = dev->ieee80211_ptr;
13762 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13763 struct sk_buff *msg;
13764 void *hdr;
13765
13766 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13767 return;
13768
13769 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13770
13771 msg = nlmsg_new(100 + ie_len, gfp);
13772 if (!msg)
13773 return;
13774
13775 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13776 if (!hdr) {
13777 nlmsg_free(msg);
13778 return;
13779 }
13780
13781 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13782 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13783 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13784 (ie_len && ie &&
13785 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13786 goto nla_put_failure;
13787
13788 genlmsg_end(msg, hdr);
13789
13790 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13791 NL80211_MCGRP_MLME, gfp);
13792 return;
13793
13794 nla_put_failure:
13795 genlmsg_cancel(msg, hdr);
13796 nlmsg_free(msg);
13797 }
13798 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13799
13800 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13801 struct net_device *netdev, const u8 *addr,
13802 enum nl80211_key_type key_type, int key_id,
13803 const u8 *tsc, gfp_t gfp)
13804 {
13805 struct sk_buff *msg;
13806 void *hdr;
13807
13808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13809 if (!msg)
13810 return;
13811
13812 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13813 if (!hdr) {
13814 nlmsg_free(msg);
13815 return;
13816 }
13817
13818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13819 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13820 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13821 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13822 (key_id != -1 &&
13823 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13824 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13825 goto nla_put_failure;
13826
13827 genlmsg_end(msg, hdr);
13828
13829 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13830 NL80211_MCGRP_MLME, gfp);
13831 return;
13832
13833 nla_put_failure:
13834 genlmsg_cancel(msg, hdr);
13835 nlmsg_free(msg);
13836 }
13837
13838 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13839 struct ieee80211_channel *channel_before,
13840 struct ieee80211_channel *channel_after)
13841 {
13842 struct sk_buff *msg;
13843 void *hdr;
13844 struct nlattr *nl_freq;
13845
13846 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13847 if (!msg)
13848 return;
13849
13850 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13851 if (!hdr) {
13852 nlmsg_free(msg);
13853 return;
13854 }
13855
13856 /*
13857 * Since we are applying the beacon hint to a wiphy we know its
13858 * wiphy_idx is valid
13859 */
13860 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13861 goto nla_put_failure;
13862
13863 /* Before */
13864 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13865 if (!nl_freq)
13866 goto nla_put_failure;
13867 if (nl80211_msg_put_channel(msg, channel_before, false))
13868 goto nla_put_failure;
13869 nla_nest_end(msg, nl_freq);
13870
13871 /* After */
13872 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13873 if (!nl_freq)
13874 goto nla_put_failure;
13875 if (nl80211_msg_put_channel(msg, channel_after, false))
13876 goto nla_put_failure;
13877 nla_nest_end(msg, nl_freq);
13878
13879 genlmsg_end(msg, hdr);
13880
13881 rcu_read_lock();
13882 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13883 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13884 rcu_read_unlock();
13885
13886 return;
13887
13888 nla_put_failure:
13889 genlmsg_cancel(msg, hdr);
13890 nlmsg_free(msg);
13891 }
13892
13893 static void nl80211_send_remain_on_chan_event(
13894 int cmd, struct cfg80211_registered_device *rdev,
13895 struct wireless_dev *wdev, u64 cookie,
13896 struct ieee80211_channel *chan,
13897 unsigned int duration, gfp_t gfp)
13898 {
13899 struct sk_buff *msg;
13900 void *hdr;
13901
13902 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13903 if (!msg)
13904 return;
13905
13906 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13907 if (!hdr) {
13908 nlmsg_free(msg);
13909 return;
13910 }
13911
13912 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13913 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13914 wdev->netdev->ifindex)) ||
13915 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13916 NL80211_ATTR_PAD) ||
13917 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13918 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13919 NL80211_CHAN_NO_HT) ||
13920 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13921 NL80211_ATTR_PAD))
13922 goto nla_put_failure;
13923
13924 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13925 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13926 goto nla_put_failure;
13927
13928 genlmsg_end(msg, hdr);
13929
13930 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13931 NL80211_MCGRP_MLME, gfp);
13932 return;
13933
13934 nla_put_failure:
13935 genlmsg_cancel(msg, hdr);
13936 nlmsg_free(msg);
13937 }
13938
13939 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13940 struct ieee80211_channel *chan,
13941 unsigned int duration, gfp_t gfp)
13942 {
13943 struct wiphy *wiphy = wdev->wiphy;
13944 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13945
13946 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13947 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13948 rdev, wdev, cookie, chan,
13949 duration, gfp);
13950 }
13951 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13952
13953 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13954 struct ieee80211_channel *chan,
13955 gfp_t gfp)
13956 {
13957 struct wiphy *wiphy = wdev->wiphy;
13958 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13959
13960 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13961 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13962 rdev, wdev, cookie, chan, 0, gfp);
13963 }
13964 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13965
13966 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13967 struct station_info *sinfo, gfp_t gfp)
13968 {
13969 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13970 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13971 struct sk_buff *msg;
13972
13973 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13974
13975 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13976 if (!msg)
13977 return;
13978
13979 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13980 rdev, dev, mac_addr, sinfo) < 0) {
13981 nlmsg_free(msg);
13982 return;
13983 }
13984
13985 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13986 NL80211_MCGRP_MLME, gfp);
13987 }
13988 EXPORT_SYMBOL(cfg80211_new_sta);
13989
13990 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13991 struct station_info *sinfo, gfp_t gfp)
13992 {
13993 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13994 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13995 struct sk_buff *msg;
13996 struct station_info empty_sinfo = {};
13997
13998 if (!sinfo)
13999 sinfo = &empty_sinfo;
14000
14001 trace_cfg80211_del_sta(dev, mac_addr);
14002
14003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14004 if (!msg)
14005 return;
14006
14007 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14008 rdev, dev, mac_addr, sinfo) < 0) {
14009 nlmsg_free(msg);
14010 return;
14011 }
14012
14013 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14014 NL80211_MCGRP_MLME, gfp);
14015 }
14016 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14017
14018 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14019 enum nl80211_connect_failed_reason reason,
14020 gfp_t gfp)
14021 {
14022 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14023 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14024 struct sk_buff *msg;
14025 void *hdr;
14026
14027 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14028 if (!msg)
14029 return;
14030
14031 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14032 if (!hdr) {
14033 nlmsg_free(msg);
14034 return;
14035 }
14036
14037 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14038 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14039 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14040 goto nla_put_failure;
14041
14042 genlmsg_end(msg, hdr);
14043
14044 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14045 NL80211_MCGRP_MLME, gfp);
14046 return;
14047
14048 nla_put_failure:
14049 genlmsg_cancel(msg, hdr);
14050 nlmsg_free(msg);
14051 }
14052 EXPORT_SYMBOL(cfg80211_conn_failed);
14053
14054 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14055 const u8 *addr, gfp_t gfp)
14056 {
14057 struct wireless_dev *wdev = dev->ieee80211_ptr;
14058 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14059 struct sk_buff *msg;
14060 void *hdr;
14061 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
14062
14063 if (!nlportid)
14064 return false;
14065
14066 msg = nlmsg_new(100, gfp);
14067 if (!msg)
14068 return true;
14069
14070 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14071 if (!hdr) {
14072 nlmsg_free(msg);
14073 return true;
14074 }
14075
14076 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14077 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14078 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14079 goto nla_put_failure;
14080
14081 genlmsg_end(msg, hdr);
14082 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14083 return true;
14084
14085 nla_put_failure:
14086 genlmsg_cancel(msg, hdr);
14087 nlmsg_free(msg);
14088 return true;
14089 }
14090
14091 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14092 const u8 *addr, gfp_t gfp)
14093 {
14094 struct wireless_dev *wdev = dev->ieee80211_ptr;
14095 bool ret;
14096
14097 trace_cfg80211_rx_spurious_frame(dev, addr);
14098
14099 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14100 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14101 trace_cfg80211_return_bool(false);
14102 return false;
14103 }
14104 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14105 addr, gfp);
14106 trace_cfg80211_return_bool(ret);
14107 return ret;
14108 }
14109 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14110
14111 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14112 const u8 *addr, gfp_t gfp)
14113 {
14114 struct wireless_dev *wdev = dev->ieee80211_ptr;
14115 bool ret;
14116
14117 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14118
14119 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14120 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14121 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14122 trace_cfg80211_return_bool(false);
14123 return false;
14124 }
14125 ret = __nl80211_unexpected_frame(dev,
14126 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14127 addr, gfp);
14128 trace_cfg80211_return_bool(ret);
14129 return ret;
14130 }
14131 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14132
14133 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14134 struct wireless_dev *wdev, u32 nlportid,
14135 int freq, int sig_dbm,
14136 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14137 {
14138 struct net_device *netdev = wdev->netdev;
14139 struct sk_buff *msg;
14140 void *hdr;
14141
14142 msg = nlmsg_new(100 + len, gfp);
14143 if (!msg)
14144 return -ENOMEM;
14145
14146 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14147 if (!hdr) {
14148 nlmsg_free(msg);
14149 return -ENOMEM;
14150 }
14151
14152 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14153 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14154 netdev->ifindex)) ||
14155 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14156 NL80211_ATTR_PAD) ||
14157 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14158 (sig_dbm &&
14159 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14160 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14161 (flags &&
14162 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14163 goto nla_put_failure;
14164
14165 genlmsg_end(msg, hdr);
14166
14167 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14168
14169 nla_put_failure:
14170 genlmsg_cancel(msg, hdr);
14171 nlmsg_free(msg);
14172 return -ENOBUFS;
14173 }
14174
14175 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14176 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14177 {
14178 struct wiphy *wiphy = wdev->wiphy;
14179 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14180 struct net_device *netdev = wdev->netdev;
14181 struct sk_buff *msg;
14182 void *hdr;
14183
14184 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14185
14186 msg = nlmsg_new(100 + len, gfp);
14187 if (!msg)
14188 return;
14189
14190 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14191 if (!hdr) {
14192 nlmsg_free(msg);
14193 return;
14194 }
14195
14196 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14197 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14198 netdev->ifindex)) ||
14199 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14200 NL80211_ATTR_PAD) ||
14201 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14202 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14203 NL80211_ATTR_PAD) ||
14204 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14205 goto nla_put_failure;
14206
14207 genlmsg_end(msg, hdr);
14208
14209 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14210 NL80211_MCGRP_MLME, gfp);
14211 return;
14212
14213 nla_put_failure:
14214 genlmsg_cancel(msg, hdr);
14215 nlmsg_free(msg);
14216 }
14217 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14218
14219 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14220 const char *mac, gfp_t gfp)
14221 {
14222 struct wireless_dev *wdev = dev->ieee80211_ptr;
14223 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14224 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14225 void **cb;
14226
14227 if (!msg)
14228 return NULL;
14229
14230 cb = (void **)msg->cb;
14231
14232 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14233 if (!cb[0]) {
14234 nlmsg_free(msg);
14235 return NULL;
14236 }
14237
14238 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14239 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14240 goto nla_put_failure;
14241
14242 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14243 goto nla_put_failure;
14244
14245 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14246 if (!cb[1])
14247 goto nla_put_failure;
14248
14249 cb[2] = rdev;
14250
14251 return msg;
14252 nla_put_failure:
14253 nlmsg_free(msg);
14254 return NULL;
14255 }
14256
14257 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14258 {
14259 void **cb = (void **)msg->cb;
14260 struct cfg80211_registered_device *rdev = cb[2];
14261
14262 nla_nest_end(msg, cb[1]);
14263 genlmsg_end(msg, cb[0]);
14264
14265 memset(msg->cb, 0, sizeof(msg->cb));
14266
14267 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14268 NL80211_MCGRP_MLME, gfp);
14269 }
14270
14271 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14272 enum nl80211_cqm_rssi_threshold_event rssi_event,
14273 s32 rssi_level, gfp_t gfp)
14274 {
14275 struct sk_buff *msg;
14276 struct wireless_dev *wdev = dev->ieee80211_ptr;
14277 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14278
14279 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14280
14281 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14282 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14283 return;
14284
14285 if (wdev->cqm_config) {
14286 wdev->cqm_config->last_rssi_event_value = rssi_level;
14287
14288 cfg80211_cqm_rssi_update(rdev, dev);
14289
14290 if (rssi_level == 0)
14291 rssi_level = wdev->cqm_config->last_rssi_event_value;
14292 }
14293
14294 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14295 if (!msg)
14296 return;
14297
14298 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14299 rssi_event))
14300 goto nla_put_failure;
14301
14302 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14303 rssi_level))
14304 goto nla_put_failure;
14305
14306 cfg80211_send_cqm(msg, gfp);
14307
14308 return;
14309
14310 nla_put_failure:
14311 nlmsg_free(msg);
14312 }
14313 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14314
14315 void cfg80211_cqm_txe_notify(struct net_device *dev,
14316 const u8 *peer, u32 num_packets,
14317 u32 rate, u32 intvl, gfp_t gfp)
14318 {
14319 struct sk_buff *msg;
14320
14321 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14322 if (!msg)
14323 return;
14324
14325 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14326 goto nla_put_failure;
14327
14328 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14329 goto nla_put_failure;
14330
14331 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14332 goto nla_put_failure;
14333
14334 cfg80211_send_cqm(msg, gfp);
14335 return;
14336
14337 nla_put_failure:
14338 nlmsg_free(msg);
14339 }
14340 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14341
14342 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14343 const u8 *peer, u32 num_packets, gfp_t gfp)
14344 {
14345 struct sk_buff *msg;
14346
14347 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14348
14349 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14350 if (!msg)
14351 return;
14352
14353 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14354 goto nla_put_failure;
14355
14356 cfg80211_send_cqm(msg, gfp);
14357 return;
14358
14359 nla_put_failure:
14360 nlmsg_free(msg);
14361 }
14362 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14363
14364 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14365 {
14366 struct sk_buff *msg;
14367
14368 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14369 if (!msg)
14370 return;
14371
14372 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14373 goto nla_put_failure;
14374
14375 cfg80211_send_cqm(msg, gfp);
14376 return;
14377
14378 nla_put_failure:
14379 nlmsg_free(msg);
14380 }
14381 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14382
14383 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14384 struct net_device *netdev, const u8 *bssid,
14385 const u8 *replay_ctr, gfp_t gfp)
14386 {
14387 struct sk_buff *msg;
14388 struct nlattr *rekey_attr;
14389 void *hdr;
14390
14391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14392 if (!msg)
14393 return;
14394
14395 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14396 if (!hdr) {
14397 nlmsg_free(msg);
14398 return;
14399 }
14400
14401 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14402 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14403 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14404 goto nla_put_failure;
14405
14406 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14407 if (!rekey_attr)
14408 goto nla_put_failure;
14409
14410 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14411 NL80211_REPLAY_CTR_LEN, replay_ctr))
14412 goto nla_put_failure;
14413
14414 nla_nest_end(msg, rekey_attr);
14415
14416 genlmsg_end(msg, hdr);
14417
14418 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14419 NL80211_MCGRP_MLME, gfp);
14420 return;
14421
14422 nla_put_failure:
14423 genlmsg_cancel(msg, hdr);
14424 nlmsg_free(msg);
14425 }
14426
14427 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14428 const u8 *replay_ctr, gfp_t gfp)
14429 {
14430 struct wireless_dev *wdev = dev->ieee80211_ptr;
14431 struct wiphy *wiphy = wdev->wiphy;
14432 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14433
14434 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14435 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14436 }
14437 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14438
14439 static void
14440 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14441 struct net_device *netdev, int index,
14442 const u8 *bssid, bool preauth, gfp_t gfp)
14443 {
14444 struct sk_buff *msg;
14445 struct nlattr *attr;
14446 void *hdr;
14447
14448 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14449 if (!msg)
14450 return;
14451
14452 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14453 if (!hdr) {
14454 nlmsg_free(msg);
14455 return;
14456 }
14457
14458 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14459 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14460 goto nla_put_failure;
14461
14462 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14463 if (!attr)
14464 goto nla_put_failure;
14465
14466 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14467 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14468 (preauth &&
14469 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14470 goto nla_put_failure;
14471
14472 nla_nest_end(msg, attr);
14473
14474 genlmsg_end(msg, hdr);
14475
14476 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14477 NL80211_MCGRP_MLME, gfp);
14478 return;
14479
14480 nla_put_failure:
14481 genlmsg_cancel(msg, hdr);
14482 nlmsg_free(msg);
14483 }
14484
14485 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14486 const u8 *bssid, bool preauth, gfp_t gfp)
14487 {
14488 struct wireless_dev *wdev = dev->ieee80211_ptr;
14489 struct wiphy *wiphy = wdev->wiphy;
14490 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14491
14492 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14493 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14494 }
14495 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14496
14497 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14498 struct net_device *netdev,
14499 struct cfg80211_chan_def *chandef,
14500 gfp_t gfp,
14501 enum nl80211_commands notif,
14502 u8 count)
14503 {
14504 struct sk_buff *msg;
14505 void *hdr;
14506
14507 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14508 if (!msg)
14509 return;
14510
14511 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14512 if (!hdr) {
14513 nlmsg_free(msg);
14514 return;
14515 }
14516
14517 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14518 goto nla_put_failure;
14519
14520 if (nl80211_send_chandef(msg, chandef))
14521 goto nla_put_failure;
14522
14523 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14524 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14525 goto nla_put_failure;
14526
14527 genlmsg_end(msg, hdr);
14528
14529 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14530 NL80211_MCGRP_MLME, gfp);
14531 return;
14532
14533 nla_put_failure:
14534 genlmsg_cancel(msg, hdr);
14535 nlmsg_free(msg);
14536 }
14537
14538 void cfg80211_ch_switch_notify(struct net_device *dev,
14539 struct cfg80211_chan_def *chandef)
14540 {
14541 struct wireless_dev *wdev = dev->ieee80211_ptr;
14542 struct wiphy *wiphy = wdev->wiphy;
14543 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14544
14545 ASSERT_WDEV_LOCK(wdev);
14546
14547 trace_cfg80211_ch_switch_notify(dev, chandef);
14548
14549 wdev->chandef = *chandef;
14550 wdev->preset_chandef = *chandef;
14551 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14552 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14553 }
14554 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14555
14556 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14557 struct cfg80211_chan_def *chandef,
14558 u8 count)
14559 {
14560 struct wireless_dev *wdev = dev->ieee80211_ptr;
14561 struct wiphy *wiphy = wdev->wiphy;
14562 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14563
14564 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14565
14566 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14567 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14568 }
14569 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14570
14571 void
14572 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14573 const struct cfg80211_chan_def *chandef,
14574 enum nl80211_radar_event event,
14575 struct net_device *netdev, gfp_t gfp)
14576 {
14577 struct sk_buff *msg;
14578 void *hdr;
14579
14580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14581 if (!msg)
14582 return;
14583
14584 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14585 if (!hdr) {
14586 nlmsg_free(msg);
14587 return;
14588 }
14589
14590 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14591 goto nla_put_failure;
14592
14593 /* NOP and radar events don't need a netdev parameter */
14594 if (netdev) {
14595 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14596
14597 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14598 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14599 NL80211_ATTR_PAD))
14600 goto nla_put_failure;
14601 }
14602
14603 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14604 goto nla_put_failure;
14605
14606 if (nl80211_send_chandef(msg, chandef))
14607 goto nla_put_failure;
14608
14609 genlmsg_end(msg, hdr);
14610
14611 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14612 NL80211_MCGRP_MLME, gfp);
14613 return;
14614
14615 nla_put_failure:
14616 genlmsg_cancel(msg, hdr);
14617 nlmsg_free(msg);
14618 }
14619
14620 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14621 u64 cookie, bool acked, gfp_t gfp)
14622 {
14623 struct wireless_dev *wdev = dev->ieee80211_ptr;
14624 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14625 struct sk_buff *msg;
14626 void *hdr;
14627
14628 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14629
14630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14631
14632 if (!msg)
14633 return;
14634
14635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14636 if (!hdr) {
14637 nlmsg_free(msg);
14638 return;
14639 }
14640
14641 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14642 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14643 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14644 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14645 NL80211_ATTR_PAD) ||
14646 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14647 goto nla_put_failure;
14648
14649 genlmsg_end(msg, hdr);
14650
14651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14652 NL80211_MCGRP_MLME, gfp);
14653 return;
14654
14655 nla_put_failure:
14656 genlmsg_cancel(msg, hdr);
14657 nlmsg_free(msg);
14658 }
14659 EXPORT_SYMBOL(cfg80211_probe_status);
14660
14661 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14662 const u8 *frame, size_t len,
14663 int freq, int sig_dbm)
14664 {
14665 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14666 struct sk_buff *msg;
14667 void *hdr;
14668 struct cfg80211_beacon_registration *reg;
14669
14670 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14671
14672 spin_lock_bh(&rdev->beacon_registrations_lock);
14673 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14674 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14675 if (!msg) {
14676 spin_unlock_bh(&rdev->beacon_registrations_lock);
14677 return;
14678 }
14679
14680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14681 if (!hdr)
14682 goto nla_put_failure;
14683
14684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14685 (freq &&
14686 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14687 (sig_dbm &&
14688 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14689 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14690 goto nla_put_failure;
14691
14692 genlmsg_end(msg, hdr);
14693
14694 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14695 }
14696 spin_unlock_bh(&rdev->beacon_registrations_lock);
14697 return;
14698
14699 nla_put_failure:
14700 spin_unlock_bh(&rdev->beacon_registrations_lock);
14701 if (hdr)
14702 genlmsg_cancel(msg, hdr);
14703 nlmsg_free(msg);
14704 }
14705 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14706
14707 #ifdef CONFIG_PM
14708 static int cfg80211_net_detect_results(struct sk_buff *msg,
14709 struct cfg80211_wowlan_wakeup *wakeup)
14710 {
14711 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14712 struct nlattr *nl_results, *nl_match, *nl_freqs;
14713 int i, j;
14714
14715 nl_results = nla_nest_start(
14716 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14717 if (!nl_results)
14718 return -EMSGSIZE;
14719
14720 for (i = 0; i < nd->n_matches; i++) {
14721 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14722
14723 nl_match = nla_nest_start(msg, i);
14724 if (!nl_match)
14725 break;
14726
14727 /* The SSID attribute is optional in nl80211, but for
14728 * simplicity reasons it's always present in the
14729 * cfg80211 structure. If a driver can't pass the
14730 * SSID, that needs to be changed. A zero length SSID
14731 * is still a valid SSID (wildcard), so it cannot be
14732 * used for this purpose.
14733 */
14734 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14735 match->ssid.ssid)) {
14736 nla_nest_cancel(msg, nl_match);
14737 goto out;
14738 }
14739
14740 if (match->n_channels) {
14741 nl_freqs = nla_nest_start(
14742 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14743 if (!nl_freqs) {
14744 nla_nest_cancel(msg, nl_match);
14745 goto out;
14746 }
14747
14748 for (j = 0; j < match->n_channels; j++) {
14749 if (nla_put_u32(msg, j, match->channels[j])) {
14750 nla_nest_cancel(msg, nl_freqs);
14751 nla_nest_cancel(msg, nl_match);
14752 goto out;
14753 }
14754 }
14755
14756 nla_nest_end(msg, nl_freqs);
14757 }
14758
14759 nla_nest_end(msg, nl_match);
14760 }
14761
14762 out:
14763 nla_nest_end(msg, nl_results);
14764 return 0;
14765 }
14766
14767 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14768 struct cfg80211_wowlan_wakeup *wakeup,
14769 gfp_t gfp)
14770 {
14771 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14772 struct sk_buff *msg;
14773 void *hdr;
14774 int size = 200;
14775
14776 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14777
14778 if (wakeup)
14779 size += wakeup->packet_present_len;
14780
14781 msg = nlmsg_new(size, gfp);
14782 if (!msg)
14783 return;
14784
14785 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14786 if (!hdr)
14787 goto free_msg;
14788
14789 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14790 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14791 NL80211_ATTR_PAD))
14792 goto free_msg;
14793
14794 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14795 wdev->netdev->ifindex))
14796 goto free_msg;
14797
14798 if (wakeup) {
14799 struct nlattr *reasons;
14800
14801 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14802 if (!reasons)
14803 goto free_msg;
14804
14805 if (wakeup->disconnect &&
14806 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14807 goto free_msg;
14808 if (wakeup->magic_pkt &&
14809 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14810 goto free_msg;
14811 if (wakeup->gtk_rekey_failure &&
14812 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14813 goto free_msg;
14814 if (wakeup->eap_identity_req &&
14815 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14816 goto free_msg;
14817 if (wakeup->four_way_handshake &&
14818 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14819 goto free_msg;
14820 if (wakeup->rfkill_release &&
14821 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14822 goto free_msg;
14823
14824 if (wakeup->pattern_idx >= 0 &&
14825 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14826 wakeup->pattern_idx))
14827 goto free_msg;
14828
14829 if (wakeup->tcp_match &&
14830 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14831 goto free_msg;
14832
14833 if (wakeup->tcp_connlost &&
14834 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14835 goto free_msg;
14836
14837 if (wakeup->tcp_nomoretokens &&
14838 nla_put_flag(msg,
14839 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14840 goto free_msg;
14841
14842 if (wakeup->packet) {
14843 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14844 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14845
14846 if (!wakeup->packet_80211) {
14847 pkt_attr =
14848 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14849 len_attr =
14850 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14851 }
14852
14853 if (wakeup->packet_len &&
14854 nla_put_u32(msg, len_attr, wakeup->packet_len))
14855 goto free_msg;
14856
14857 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14858 wakeup->packet))
14859 goto free_msg;
14860 }
14861
14862 if (wakeup->net_detect &&
14863 cfg80211_net_detect_results(msg, wakeup))
14864 goto free_msg;
14865
14866 nla_nest_end(msg, reasons);
14867 }
14868
14869 genlmsg_end(msg, hdr);
14870
14871 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14872 NL80211_MCGRP_MLME, gfp);
14873 return;
14874
14875 free_msg:
14876 nlmsg_free(msg);
14877 }
14878 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14879 #endif
14880
14881 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14882 enum nl80211_tdls_operation oper,
14883 u16 reason_code, gfp_t gfp)
14884 {
14885 struct wireless_dev *wdev = dev->ieee80211_ptr;
14886 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14887 struct sk_buff *msg;
14888 void *hdr;
14889
14890 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14891 reason_code);
14892
14893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14894 if (!msg)
14895 return;
14896
14897 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14898 if (!hdr) {
14899 nlmsg_free(msg);
14900 return;
14901 }
14902
14903 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14904 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14905 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14906 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14907 (reason_code > 0 &&
14908 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14909 goto nla_put_failure;
14910
14911 genlmsg_end(msg, hdr);
14912
14913 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14914 NL80211_MCGRP_MLME, gfp);
14915 return;
14916
14917 nla_put_failure:
14918 genlmsg_cancel(msg, hdr);
14919 nlmsg_free(msg);
14920 }
14921 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14922
14923 static int nl80211_netlink_notify(struct notifier_block * nb,
14924 unsigned long state,
14925 void *_notify)
14926 {
14927 struct netlink_notify *notify = _notify;
14928 struct cfg80211_registered_device *rdev;
14929 struct wireless_dev *wdev;
14930 struct cfg80211_beacon_registration *reg, *tmp;
14931
14932 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14933 return NOTIFY_DONE;
14934
14935 rcu_read_lock();
14936
14937 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14938 struct cfg80211_sched_scan_request *sched_scan_req;
14939
14940 list_for_each_entry_rcu(sched_scan_req,
14941 &rdev->sched_scan_req_list,
14942 list) {
14943 if (sched_scan_req->owner_nlportid == notify->portid) {
14944 sched_scan_req->nl_owner_dead = true;
14945 schedule_work(&rdev->sched_scan_stop_wk);
14946 }
14947 }
14948
14949 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14950 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14951
14952 if (wdev->owner_nlportid == notify->portid) {
14953 wdev->nl_owner_dead = true;
14954 schedule_work(&rdev->destroy_work);
14955 } else if (wdev->conn_owner_nlportid == notify->portid) {
14956 schedule_work(&wdev->disconnect_wk);
14957 }
14958 }
14959
14960 spin_lock_bh(&rdev->beacon_registrations_lock);
14961 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14962 list) {
14963 if (reg->nlportid == notify->portid) {
14964 list_del(&reg->list);
14965 kfree(reg);
14966 break;
14967 }
14968 }
14969 spin_unlock_bh(&rdev->beacon_registrations_lock);
14970 }
14971
14972 rcu_read_unlock();
14973
14974 /*
14975 * It is possible that the user space process that is controlling the
14976 * indoor setting disappeared, so notify the regulatory core.
14977 */
14978 regulatory_netlink_notify(notify->portid);
14979 return NOTIFY_OK;
14980 }
14981
14982 static struct notifier_block nl80211_netlink_notifier = {
14983 .notifier_call = nl80211_netlink_notify,
14984 };
14985
14986 void cfg80211_ft_event(struct net_device *netdev,
14987 struct cfg80211_ft_event_params *ft_event)
14988 {
14989 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14990 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14991 struct sk_buff *msg;
14992 void *hdr;
14993
14994 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14995
14996 if (!ft_event->target_ap)
14997 return;
14998
14999 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15000 if (!msg)
15001 return;
15002
15003 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15004 if (!hdr)
15005 goto out;
15006
15007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15008 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15009 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15010 goto out;
15011
15012 if (ft_event->ies &&
15013 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15014 goto out;
15015 if (ft_event->ric_ies &&
15016 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15017 ft_event->ric_ies))
15018 goto out;
15019
15020 genlmsg_end(msg, hdr);
15021
15022 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15023 NL80211_MCGRP_MLME, GFP_KERNEL);
15024 return;
15025 out:
15026 nlmsg_free(msg);
15027 }
15028 EXPORT_SYMBOL(cfg80211_ft_event);
15029
15030 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15031 {
15032 struct cfg80211_registered_device *rdev;
15033 struct sk_buff *msg;
15034 void *hdr;
15035 u32 nlportid;
15036
15037 rdev = wiphy_to_rdev(wdev->wiphy);
15038 if (!rdev->crit_proto_nlportid)
15039 return;
15040
15041 nlportid = rdev->crit_proto_nlportid;
15042 rdev->crit_proto_nlportid = 0;
15043
15044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15045 if (!msg)
15046 return;
15047
15048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15049 if (!hdr)
15050 goto nla_put_failure;
15051
15052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15053 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15054 NL80211_ATTR_PAD))
15055 goto nla_put_failure;
15056
15057 genlmsg_end(msg, hdr);
15058
15059 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15060 return;
15061
15062 nla_put_failure:
15063 if (hdr)
15064 genlmsg_cancel(msg, hdr);
15065 nlmsg_free(msg);
15066 }
15067 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15068
15069 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15070 {
15071 struct wiphy *wiphy = wdev->wiphy;
15072 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15073 struct sk_buff *msg;
15074 void *hdr;
15075
15076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15077 if (!msg)
15078 return;
15079
15080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15081 if (!hdr)
15082 goto out;
15083
15084 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15085 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15086 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15087 NL80211_ATTR_PAD))
15088 goto out;
15089
15090 genlmsg_end(msg, hdr);
15091
15092 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15093 NL80211_MCGRP_MLME, GFP_KERNEL);
15094 return;
15095 out:
15096 nlmsg_free(msg);
15097 }
15098
15099 /* initialisation/exit functions */
15100
15101 int __init nl80211_init(void)
15102 {
15103 int err;
15104
15105 err = genl_register_family(&nl80211_fam);
15106 if (err)
15107 return err;
15108
15109 err = netlink_register_notifier(&nl80211_netlink_notifier);
15110 if (err)
15111 goto err_out;
15112
15113 return 0;
15114 err_out:
15115 genl_unregister_family(&nl80211_fam);
15116 return err;
15117 }
15118
15119 void nl80211_exit(void)
15120 {
15121 netlink_unregister_notifier(&nl80211_netlink_notifier);
15122 genl_unregister_family(&nl80211_fam);
15123 }
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